fix: dependencies

This reverts commit e7c359c1e0e21a8aeea391fd5b2cd6316526d42c.

lnbits/app.py

@@ -48,6 +48,11 @@ from lnbits.core.tasks import (
     process_next_audit_entry,
     refresh_extension_cache,
 )
+from lnbits.core.wasm_ext.routes.register import register_wasm_extension
+from lnbits.core.wasm_ext.wasm.events import dispatch_wasm_invoice_paid
+from lnbits.core.wasm_ext.wasm.loader import (
+    is_wasm_extension_id,
+)
 from lnbits.exceptions import register_exception_handlers
 from lnbits.helpers import version_parse
 from lnbits.llms_txt import create_llms_txt_route
@@ -171,6 +176,7 @@ def create_app() -> FastAPI:
 
     # Allow registering new extensions routes without direct access to the `app` object
     core_app_extra.register_new_ext_routes = register_new_ext_routes(app)
+    core_app_extra.register_new_wasm_ext_routes = register_new_wasm_ext_routes(app)
     core_app_extra.register_new_ratelimiter = register_new_ratelimiter(app)
 
     # register static files
@@ -417,6 +423,13 @@ def register_new_ext_routes(app: FastAPI) -> Callable:
     return register_new_ext_routes_fn
 
 
+def register_new_wasm_ext_routes(app: FastAPI) -> Callable:
+    def register_new_wasm_ext_routes_fn(ext_id: str):
+        register_wasm_extension(app, ext_id)
+
+    return register_new_wasm_ext_routes_fn
+
+
 def register_new_ratelimiter(app: FastAPI) -> Callable:
     def register_new_ratelimiter_fn():
         limiter = Limiter(
@@ -470,10 +483,14 @@ async def check_and_register_extensions(app: FastAPI) -> None:
     await check_installed_extensions(app)
     for ext in await get_valid_extensions(False):
         try:
+            if is_wasm_extension_id(ext.code):
+                register_wasm_extension(app, ext.code)
+                continue
             register_ext_routes(app, ext)
             register_ext_tasks(ext)
         except Exception as exc:
             logger.error(f"Could not load extension `{ext.code}`: {exc!s}")
+            await update_installed_extension_state(ext_id=ext.code, active=False)
 
 
 def register_async_tasks() -> None:

lnbits/core/helpers.py

@@ -15,6 +15,8 @@ from lnbits.core.crud import (
 from lnbits.core.db import db as core_db
 from lnbits.core.models import DbVersion
 from lnbits.core.models.extensions import InstallableExtension
+from lnbits.core.wasm_ext.storage.crud import migrate_wasm_extension_database
+from lnbits.core.wasm_ext.wasm.loader import is_wasm_extension_id
 from lnbits.db import COCKROACH, POSTGRES, SQLITE, Connection
 from lnbits.settings import settings
 
@@ -22,7 +24,16 @@ from lnbits.settings import settings
 async def migrate_extension_database(
     ext: InstallableExtension, current_version: DbVersion | None = None
 ):
+    if is_wasm_extension_id(ext.id):
+        await migrate_wasm_extension_database(ext, current_version)
+        return
+    else:
+        await migrate_py_extension_database(ext, current_version)
 
+
+async def migrate_py_extension_database(
+    ext: InstallableExtension, current_version: DbVersion | None = None
+):
     try:
         ext_migrations = importlib.import_module(f"{ext.module_name}.migrations")
         ext_db = importlib.import_module(ext.module_name).db

lnbits/core/migrations.py

@@ -815,3 +815,12 @@ async def m045_add_external_id_to_payments(db: Connection):
         CREATE INDEX IF NOT EXISTS idx_payments_external_id
         ON apipayments (external_id);
         """)
+
+
+async def m046_add_permissions_to_installed_extensions(db: Connection):
+    """
+    Adds granted permissions to installed extensions.
+    """
+    await db.execute(
+        "ALTER TABLE installed_extensions ADD COLUMN permissions TEXT DEFAULT '[]'"
+    )

lnbits/core/models/extensions.py

@@ -77,6 +77,21 @@ class GitHubRepo(BaseModel):
     default_branch: str
 
 
+class ExtensionPermission(BaseModel):
+    id: str
+    label: str | None = None
+    description: str | None = None
+    policies: list[Any] | None = None
+
+    @staticmethod
+    def list_from_config(config_json: Mapping[str, Any]) -> list[ExtensionPermission]:
+        return [
+            ExtensionPermission.parse_obj(permission)
+            for permission in config_json.get("permissions") or []
+            if isinstance(permission, dict) and permission.get("id")
+        ]
+
+
 class ExtensionConfig(BaseModel):
     name: str
     short_description: str
@@ -84,6 +99,8 @@ class ExtensionConfig(BaseModel):
     warning: str | None = ""
     min_lnbits_version: str | None
     max_lnbits_version: str | None
+    extension_type: str | None = None
+    permissions: list[ExtensionPermission] = []
 
     def is_version_compatible(self) -> bool:
         return is_lnbits_version_ok(self.min_lnbits_version, self.max_lnbits_version)
@@ -144,6 +161,7 @@ class UserExtension(BaseModel):
 class Extension(BaseModel):
     code: str
     is_valid: bool
+    is_wasm: bool = False
     name: str | None = None
     short_description: str | None = None
     tile: str | None = None
@@ -160,6 +178,8 @@ class Extension(BaseModel):
 
     @property
     def is_upgrade_extension(self) -> bool:
+        if self.is_wasm:
+            return False
         return self.upgrade_hash != ""
 
     @classmethod
@@ -167,9 +187,10 @@ class Extension(BaseModel):
         return Extension(
             code=ext_info.id,
             is_valid=True,
+            is_wasm=ext_info.is_wasm,
             name=ext_info.name,
             short_description=ext_info.short_description,
-            tile=ext_info.icon,
+            tile=_extension_tile(ext_info),
             upgrade_hash=ext_info.hash if ext_info.ext_upgrade_dir.is_dir() else "",
         )
 
@@ -348,6 +369,7 @@ class InstallableExtension(BaseModel):
     icon: str | None = None
     stars: int = 0
     meta: ExtensionMeta | None = None
+    permissions: list[ExtensionPermission] = []
 
     @property
     def hash(self) -> str:
@@ -400,6 +422,18 @@ class InstallableExtension(BaseModel):
             return False
         return self.meta.pay_to_enable.required is True
 
+    @property
+    def is_wasm(self) -> bool:
+        config_path = Path(self.ext_dir, "config.json")
+        if not config_path.is_file():
+            return False
+        try:
+            with open(config_path, encoding="utf-8") as json_file:
+                config_json = json.load(json_file)
+        except Exception:
+            return False
+        return config_json.get("extension_type") == "wasm"
+
     async def download_archive(self):
         logger.info(f"Downloading extension {self.name} ({self.installed_version}).")
         ext_zip_file = self.zip_path
@@ -432,6 +466,22 @@ class InstallableExtension(BaseModel):
                 os.remove(ext_zip_file)
             raise AssertionError("File hash missmatch. Will not install.")
 
+    def load_archive_config(self) -> dict[str, Any]:
+        if not self.zip_path.is_file():
+            return {}
+
+        try:
+            with zipfile.ZipFile(self.zip_path, "r") as archive:
+                config_name = _archive_config_name(archive.namelist())
+                if not config_name:
+                    return {}
+                with archive.open(config_name) as config_file:
+                    config = json.load(config_file)
+        except Exception as exc:
+            raise ValueError(f"Cannot read extension config for '{self.id}'.") from exc
+
+        return config if isinstance(config, dict) else {}
+
     def extract_archive(self):
         logger.info(f"Extracting extension {self.name} ({self.installed_version}).")
         Path(settings.lnbits_extensions_upgrade_path).mkdir(parents=True, exist_ok=True)
@@ -610,6 +660,7 @@ class InstallableExtension(BaseModel):
                     version=version,
                     short_description=config_json.get("short_description"),
                     icon=config_json.get("tile"),
+                    permissions=ExtensionPermission.list_from_config(config_json),
                     meta=ExtensionMeta(
                         installed_release=ExtensionRelease(
                             name=ext_id,
@@ -803,6 +854,7 @@ class CreateExtension(BaseModel):
     version: str
     cost_sats: int | None = 0
     payment_hash: str | None = None
+    permissions: list[ExtensionPermission] = []
 
 
 class ExtensionDetailsRequest(BaseModel):
@@ -855,3 +907,21 @@ def icon_to_github_url(source_repo: str, path: str | None) -> str:
     _, _, *rest = path.split("/")
     tail = "/".join(rest)
     return f"https://github.com/{source_repo}/raw/main/{tail}"
+
+
+def wasm_extension_icon_url(ext_id: str) -> str:
+    return f"/ext-assets/{ext_id}/assets/icon.png"
+
+
+def _extension_tile(ext_info: InstallableExtension) -> str | None:
+    if ext_info.is_wasm:
+        return wasm_extension_icon_url(ext_info.id)
+    return ext_info.icon
+
+
+def _archive_config_name(names: list[str]) -> str | None:
+    for name in names:
+        path = PurePosixPath(name)
+        if len(path.parts) == 2 and path.name == "config.json":
+            return name
+    return None

lnbits/core/models/misc.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
-from collections.abc import Callable
+from collections.abc import Awaitable, Callable
+from typing import Any
 
 from pydantic import BaseModel
 
@@ -9,9 +10,34 @@ def _do_nothing(*_):
     pass
 
 
+async def _do_nothing_async(_: Any) -> None:
+    pass
+
+
 class CoreAppExtra:
     register_new_ext_routes: Callable = _do_nothing
+    register_new_wasm_ext_routes: Callable = _do_nothing
     register_new_ratelimiter: Callable
+    dispatch_extension_invoice_paid: Callable[[Any], Awaitable[None]] = (
+        _do_nothing_async
+    )
+
+    def __init__(self) -> None:
+        self.wasm_extension_registry = WasmExtensionRegistry()
+
+
+class WasmExtensionRegistry:
+    def __init__(self) -> None:
+        self._extensions: dict[str, Any] = {}
+
+    def register(self, extension: Any) -> None:
+        self._extensions[extension.id] = extension
+
+    def get(self, ext_id: str) -> Any | None:
+        return self._extensions.get(ext_id)
+
+    def list(self) -> list[Any]:
+        return list(self._extensions.values())
 
 
 class ConversionData(BaseModel):

lnbits/core/services/extensions.py

@@ -17,14 +17,23 @@ from lnbits.core.crud.extensions import (
     update_installed_extension,
 )
 from lnbits.core.helpers import migrate_extension_database
+from lnbits.core.wasm_ext.api.permissions import validate_wasm_extension_permissions
+from lnbits.core.wasm_ext.wasm.loader import is_wasm_extension_id
 from lnbits.db import Connection
 from lnbits.settings import settings
 
-from ..models.extensions import Extension, ExtensionMeta, InstallableExtension
+from ..models.extensions import (
+    Extension,
+    ExtensionMeta,
+    ExtensionPermission,
+    InstallableExtension,
+)
 
 
 async def install_extension(
-    ext_info: InstallableExtension, skip_download: bool | None = False
+    ext_info: InstallableExtension,
+    skip_download: bool | None = False,
+    granted_permissions: list[ExtensionPermission] | None = None,
 ) -> Extension:
 
     ext_info.meta = ext_info.meta or ExtensionMeta()
@@ -44,6 +53,11 @@ async def install_extension(
     if not skip_download:
         await ext_info.download_archive()
 
+    extension_config = ext_info.load_archive_config()
+    ext_info.permissions = validate_wasm_extension_permissions(
+        ext_info, granted_permissions, extension_config
+    )
+
     ext_info.extract_archive()
 
     db_version = await get_db_version(ext_info.id)
@@ -61,7 +75,8 @@ async def install_extension(
         # call stop while the old routes are still active
         await stop_extension_background_work(ext_info.id)
 
-    await start_extension_background_work(ext_info.id)
+    if not extension.is_wasm:
+        await start_extension_background_work(ext_info.id)
 
     return extension
 
@@ -87,6 +102,11 @@ async def uninstall_extension(ext_id: str):
 
 
 async def activate_extension(ext: Extension):
+    if ext.is_wasm:
+        core_app_extra.register_new_wasm_ext_routes(ext.code)
+        await update_installed_extension_state(ext_id=ext.code, active=True)
+        return
+
     core_app_extra.register_new_ext_routes(ext)
     await update_installed_extension_state(ext_id=ext.code, active=True)
     await start_extension_background_work(ext.code)
@@ -103,6 +123,9 @@ async def stop_extension_background_work(ext_id: str) -> bool:
     Stop background work for extension (like asyncio.Tasks, WebSockets, etc).
     Extension must expose a `myextension_stop()` function if it is starting tasks.
     """
+    if is_wasm_extension_id(ext_id):
+        return True
+
     upgrade_hash = settings.extension_upgrade_hash(ext_id)
     ext = Extension(code=ext_id, is_valid=True, upgrade_hash=upgrade_hash)
 
@@ -135,6 +158,9 @@ async def start_extension_background_work(ext_id: str) -> bool:
     Extension CAN expose a `myextension_start()` function if it is starting tasks.
     Extension MUST expose a `myextension_stop()` in that case.
     """
+    if is_wasm_extension_id(ext_id):
+        return False
+
     upgrade_hash = settings.extension_upgrade_hash(ext_id)
     ext = Extension(code=ext_id, is_valid=True, upgrade_hash=upgrade_hash)
 

lnbits/core/tasks.py

@@ -6,6 +6,7 @@ from lnbits.core.crud import create_audit_entry
 from lnbits.core.crud.payments import get_payments_status_count
 from lnbits.core.crud.users import get_accounts
 from lnbits.core.crud.wallets import get_wallets_count
+from lnbits.core.db import core_app_extra
 from lnbits.core.models.audit import AuditEntry
 from lnbits.core.models.extensions import InstallableExtension
 from lnbits.core.models.notifications import NotificationType

lnbits/core/views/extension_api.py

@@ -29,6 +29,7 @@ from lnbits.core.models.extensions import (
     ReleasePaymentInfo,
     UserExtension,
     UserExtensionInfo,
+    wasm_extension_icon_url,
 )
 from lnbits.core.models.users import Account, AccountId
 from lnbits.core.services import check_transaction_status, create_invoice
@@ -40,6 +41,7 @@ from lnbits.core.services.extensions import (
     install_extension,
     uninstall_extension,
 )
+from lnbits.core.wasm_ext.api.permissions import validate_extension_permissions
 from lnbits.db import Page
 from lnbits.decorators import (
     check_account_exists,
@@ -89,7 +91,9 @@ async def api_install_extension(data: CreateExtension):
     )
 
     try:
-        extension = await install_extension(ext_info)
+        extension = await install_extension(
+            ext_info, granted_permissions=data.permissions
+        )
 
     except Exception as exc:
         logger.warning(exc)
@@ -459,11 +463,19 @@ async def get_extension_release(org: str, repo: str, tag_name: str):
         if not config:
             return {}
 
+        permissions = validate_extension_permissions(config.name, config.permissions)
+
         return {
             "min_lnbits_version": config.min_lnbits_version,
             "is_version_compatible": config.is_version_compatible(),
             "warning": config.warning,
+            "extension_type": config.extension_type,
+            "permissions": [dict(permission) for permission in permissions],
         }
+    except ValueError as exc:
+        raise HTTPException(
+            status_code=HTTPStatus.BAD_REQUEST, detail=str(exc)
+        ) from exc
     except Exception as exc:
         raise HTTPException(
             status_code=HTTPStatus.INTERNAL_SERVER_ERROR, detail=str(exc)
@@ -535,9 +547,10 @@ async def extensions(account_id: AccountId = Depends(check_account_id_exists)):
     )
     installable_exts_ids = [e.id for e in installable_exts]
     installable_exts += [e for e in installed_exts if e.id not in installable_exts_ids]
+    installed_exts_by_id = {e.id: e for e in installed_exts}
 
     for e in installable_exts:
-        installed_ext = next((ie for ie in installed_exts if e.id == ie.id), None)
+        installed_ext = installed_exts_by_id.get(e.id)
         if installed_ext and installed_ext.meta:
             installed_release = installed_ext.meta.installed_release
             if installed_ext.meta.pay_to_enable and not account_id.is_admin_id:
@@ -558,47 +571,60 @@ async def extensions(account_id: AccountId = Depends(check_account_id_exists)):
             e.short_description = installed_ext.short_description
             e.icon = installed_ext.icon
 
-    extension_data = [
-        {
-            "id": ext.id,
-            "name": ext.name,
-            "icon": ext.icon,
-            "shortDescription": ext.short_description,
-            "stars": ext.stars,
-            "isFeatured": ext.meta.featured if ext.meta else False,
-            "categories": ext.meta.categories if ext.meta else [],
-            "dependencies": ext.meta.dependencies if ext.meta else "",
-            "isInstalled": ext.id in installed_exts_ids,
-            "hasDatabaseTables": next(
-                (True for version in db_versions if version.db == ext.id), False
-            ),
-            "isAvailable": ext.id in all_ext_ids,
-            "isAdminOnly": ext.id in settings.lnbits_admin_extensions,
-            "isActive": ext.id not in inactive_extensions,
-            "latestRelease": (
-                dict(ext.meta.latest_release)
-                if ext.meta and ext.meta.latest_release
-                else None
-            ),
-            "hasPaidRelease": ext.meta.has_paid_release if ext.meta else False,
-            "hasFreeRelease": ext.meta.has_free_release if ext.meta else False,
-            "paidFeatures": ext.meta.paid_features if ext.meta else False,
-            "installedRelease": (
-                dict(ext.meta.installed_release)
-                if ext.meta and ext.meta.installed_release
-                else None
-            ),
-            "payToEnable": (
-                dict(ext.meta.pay_to_enable)
-                if ext.meta and ext.meta.pay_to_enable
-                else {}
-            ),
-            "isPaymentRequired": ext.requires_payment,
-            "inProgress": False,
-            "selectedForUpdate": False,
-        }
-        for ext in installable_exts
-    ]
+    extension_data = []
+    for ext in installable_exts:
+        installed_ext = installed_exts_by_id.get(ext.id)
+        is_wasm = installed_ext.is_wasm if installed_ext else ext.is_wasm
+        icon = wasm_extension_icon_url(ext.id) if is_wasm else ext.icon
+        permissions = (
+            validate_extension_permissions(
+                installed_ext.id, installed_ext.permissions, strict=False
+            )
+            if installed_ext
+            else []
+        )
+        extension_data.append(
+            {
+                "id": ext.id,
+                "name": ext.name,
+                "icon": icon,
+                "shortDescription": ext.short_description,
+                "stars": ext.stars,
+                "isFeatured": ext.meta.featured if ext.meta else False,
+                "categories": ext.meta.categories if ext.meta else [],
+                "dependencies": ext.meta.dependencies if ext.meta else "",
+                "isInstalled": ext.id in installed_exts_ids,
+                "hasDatabaseTables": next(
+                    (True for version in db_versions if version.db == ext.id), False
+                ),
+                "isAvailable": ext.id in all_ext_ids,
+                "isAdminOnly": ext.id in settings.lnbits_admin_extensions,
+                "isActive": ext.id not in inactive_extensions,
+                "latestRelease": (
+                    dict(ext.meta.latest_release)
+                    if ext.meta and ext.meta.latest_release
+                    else None
+                ),
+                "hasPaidRelease": ext.meta.has_paid_release if ext.meta else False,
+                "hasFreeRelease": ext.meta.has_free_release if ext.meta else False,
+                "paidFeatures": ext.meta.paid_features if ext.meta else False,
+                "installedRelease": (
+                    dict(ext.meta.installed_release)
+                    if ext.meta and ext.meta.installed_release
+                    else None
+                ),
+                "payToEnable": (
+                    dict(ext.meta.pay_to_enable)
+                    if ext.meta and ext.meta.pay_to_enable
+                    else {}
+                ),
+                "isPaymentRequired": ext.requires_payment,
+                "isWasm": is_wasm,
+                "permissions": [dict(permission) for permission in permissions],
+                "inProgress": False,
+                "selectedForUpdate": False,
+            }
+        )
     return extension_data
 
 

lnbits/core/wasm_ext/__init__.py

@@ -0,0 +1,24 @@
+from .api.host import ExtensionHostAPI
+from .api.models import ExtensionAPIMethod, ExtensionAPIMethodExport
+from .api.registry import (
+    extension_api_contract,
+    extension_api_method,
+    extension_api_permission_ids,
+    get_extension_api_method,
+    list_extension_api_methods,
+)
+from .api.runtime import ExtensionAPIHost
+from .wasm.loader import WasmExtension
+
+__all__ = [
+    "ExtensionAPIHost",
+    "ExtensionAPIMethod",
+    "ExtensionAPIMethodExport",
+    "ExtensionHostAPI",
+    "WasmExtension",
+    "extension_api_contract",
+    "extension_api_method",
+    "extension_api_permission_ids",
+    "get_extension_api_method",
+    "list_extension_api_methods",
+]

lnbits/core/wasm_ext/api/__init__.py

@@ -0,0 +1,22 @@
+from .host import ExtensionHostAPI
+from .models import ExtensionAPIMethod, ExtensionAPIMethodExport
+from .registry import (
+    extension_api_contract,
+    extension_api_method,
+    extension_api_permission_ids,
+    get_extension_api_method,
+    list_extension_api_methods,
+)
+from .runtime import ExtensionAPIHost
+
+__all__ = [
+    "ExtensionAPIHost",
+    "ExtensionAPIMethod",
+    "ExtensionAPIMethodExport",
+    "ExtensionHostAPI",
+    "extension_api_contract",
+    "extension_api_method",
+    "extension_api_permission_ids",
+    "get_extension_api_method",
+    "list_extension_api_methods",
+]

lnbits/core/wasm_ext/api/host.py

@@ -0,0 +1,582 @@
+from __future__ import annotations
+
+import json
+import logging
+import secrets
+import time
+from collections.abc import Iterable, Mapping
+from typing import Any
+
+from lnbits.helpers import sha256s
+
+from ..client.extensions import send_extension_api_request
+from ..storage.crud import (
+    storage_delete_row,
+    storage_get_paginated_rows,
+    storage_get_public_row,
+    storage_get_row,
+    storage_set_row,
+)
+from .models import (
+    CreateInvoicePublicRequest,
+    CreateInvoiceRequest,
+    CreateInvoiceResponse,
+    EmptyRequest,
+    ExtensionApiRequest,
+    HttpRequest,
+    HttpResponse,
+    ListUserWalletsResponse,
+    LogRequest,
+    LogResponse,
+    NowResponse,
+    PayInvoiceRequest,
+    PayInvoiceResponse,
+    RandomIdRequest,
+    RandomIdResponse,
+    StorageDeleteRequest,
+    StorageDeleteResponse,
+    StorageGetRequest,
+    StorageGetResponse,
+    StoragePaginatedRequest,
+    StoragePaginatedResponse,
+    StorageSetRequest,
+    StorageSetResponse,
+    UserWalletSummary,
+    WalletBalanceRequest,
+    WalletBalanceResponse,
+)
+from .registry import extension_api_method
+
+logger = logging.getLogger("lnbits.extensions")
+
+
+class ExtensionHostAPI:
+    def __init__(
+        self,
+        extension_id: str,
+        permissions: Iterable[Any],
+        *,
+        user_id: str | None = None,
+        access_token: str | None = None,
+        context: str = "user",
+        owner_id: str | None = None,
+    ) -> None:
+        self.extension_id = extension_id
+        self.permissions, self.permission_policies = self._permission_data(permissions)
+        self.user_id = user_id
+        self.access_token = access_token
+        self.context = context
+        self.owner_id = sha256s(user_id) if user_id else owner_id
+        from .utils import ExtensionAPIUtils
+
+        self.utils = ExtensionAPIUtils(self.extension_id, self.permissions)
+
+    @extension_api_method(
+        method_id="storage.get",
+        namespace="storage",
+        name="Get storage row",
+        host_name="storage_get",
+        sdk_name="get",
+        description="Read one row from an extension storage table.",
+        required_permission="ext.storage.read",
+        require_auth=True,
+    )
+    async def storage_get(self, request: StorageGetRequest) -> StorageGetResponse:
+        row = await storage_get_row(
+            self.extension_id,
+            request.table,
+            request.id,
+            self._require_owner_id(),
+        )
+        return StorageGetResponse(data_json=json.dumps(row) if row else None)
+
+    @extension_api_method(
+        method_id="storage.get_public",
+        namespace="storage",
+        name="Get public storage row",
+        host_name="storage_get_public",
+        sdk_name="getPublic",
+        description="Read one public row from an extension storage table.",
+        required_permission="ext.storage.read_public",
+        require_auth=False,
+    )
+    async def storage_get_public(
+        self, request: StorageGetRequest
+    ) -> StorageGetResponse:
+        public_fields = self._public_storage_fields(request.table)
+        row = await storage_get_public_row(self.extension_id, request.table, request.id)
+        if not row:
+            return StorageGetResponse()
+        public_row = {
+            field_name: value
+            for field_name, value in row.items()
+            if field_name in public_fields
+        }
+        # todo: check public fields filtering
+        return StorageGetResponse(data_json=json.dumps(public_row))
+
+    @extension_api_method(
+        method_id="storage.set",
+        namespace="storage",
+        name="Set storage row",
+        host_name="storage_set",
+        sdk_name="set",
+        description="Create or update one row in an extension storage table.",
+        required_permission="ext.storage.write",
+        require_auth=True,
+    )
+    async def storage_set(self, request: StorageSetRequest) -> StorageSetResponse:
+        await storage_set_row(
+            self.extension_id,
+            request.table,
+            request.data,
+            self._require_owner_id(),
+        )
+        return StorageSetResponse()
+
+    @extension_api_method(
+        method_id="storage.get_paginated",
+        namespace="storage",
+        name="Get paginated storage rows",
+        host_name="storage_get_paginated",
+        sdk_name="getPaginated",
+        description="Get filtered, searched, sorted, paginated storage rows.",
+        required_permission="ext.storage.read",
+        require_auth=True,
+    )
+    async def storage_get_paginated(
+        self, request: StoragePaginatedRequest
+    ) -> StoragePaginatedResponse:
+        page = await storage_get_paginated_rows(
+            self.extension_id,
+            request.table,
+            request.filters,
+            owner_id=self._require_owner_id(),
+            search=request.search,
+            search_fields=request.search_fields,
+            sort_by=request.sort_by,
+            descending=request.descending,
+            limit=request.limit,
+            offset=request.offset,
+        )
+        return StoragePaginatedResponse(
+            rows_json=json.dumps(page["data"]),
+            total=page["total"],
+        )
+
+    @extension_api_method(
+        method_id="storage.delete",
+        namespace="storage",
+        name="Delete storage row",
+        host_name="storage_delete",
+        sdk_name="delete",
+        description="Delete one row from an extension storage table.",
+        required_permission="ext.storage.write",
+        require_auth=True,
+    )
+    async def storage_delete(
+        self, request: StorageDeleteRequest
+    ) -> StorageDeleteResponse:
+        await storage_delete_row(
+            self.extension_id,
+            request.table,
+            request.id,
+            self._require_owner_id(),
+        )
+        return StorageDeleteResponse()
+
+    @extension_api_method(
+        method_id="wallet.create_invoice",
+        namespace="wallet",
+        name="Create invoice",
+        host_name="create_invoice",
+        sdk_name="createInvoice",
+        description="Create an incoming Lightning invoice for an allowed wallet.",
+        required_permission="wallet.create_invoice",
+        require_auth=True,
+    )
+    async def wallet_create_invoice(
+        self, request: CreateInvoiceRequest
+    ) -> CreateInvoiceResponse:
+        from lnbits.core.crud.wallets import get_wallet
+        from lnbits.core.models.payments import CreateInvoice
+        from lnbits.core.services.payments import create_payment_request
+
+        if not self.user_id:
+            raise PermissionError(
+                "Creating an invoice for this wallet requires an "
+                "authenticated user context."
+            )
+        wallet = await get_wallet(request.wallet_id)
+        if wallet is None or wallet.user != self.user_id:
+            raise PermissionError("Not your wallet.")
+
+        payment = await create_payment_request(
+            request.wallet_id,
+            CreateInvoice(
+                amount=request.amount,
+                unit=request.currency,
+                memo=request.memo,
+                extra=request.extra,
+                extension=self.extension_id,
+            ),
+        )
+        return CreateInvoiceResponse(
+            payment_hash=payment.payment_hash,
+            payment_request=payment.payment_request or payment.bolt11,
+            checking_id=payment.checking_id,
+        )
+
+    @extension_api_method(
+        method_id="wallet.create_invoice_public",
+        namespace="wallet",
+        name="Create public invoice",
+        host_name="create_invoice_public",
+        sdk_name="createInvoicePublic",
+        description="Create a public incoming Lightning invoice.",
+        required_permission="wallet.create_invoice_public",
+        require_auth=False,
+    )
+    async def wallet_create_invoice_public(
+        self, request: CreateInvoicePublicRequest
+    ) -> CreateInvoiceResponse:
+        from lnbits.core.models.payments import CreateInvoice
+        from lnbits.core.services.payments import create_payment_request
+
+        row: dict[str, Any] | None = None
+        wallet_field = ""
+        for policy in self._public_invoice_wallet_sources():
+            row = await storage_get_public_row(
+                self.extension_id,
+                policy["table"],
+                request.source_id,
+            )
+            if row:
+                wallet_field = policy["wallet_field"]
+                break
+
+        if not row:
+            raise PermissionError("Public invoice source was not found.")
+
+        wallet_id = row.get(wallet_field)
+        if not isinstance(wallet_id, str) or not wallet_id:
+            raise PermissionError("Public invoice source has no valid wallet.")
+
+        payment = await create_payment_request(
+            wallet_id,
+            CreateInvoice(
+                amount=request.amount,
+                unit=request.currency,
+                memo=request.memo,
+                extra={
+                    "tag": self.extension_id,
+                    "source_id": request.source_id,
+                    f"extra_{self.extension_id}": request.extra,
+                },
+                extension=self.extension_id,
+            ),
+        )
+        return CreateInvoiceResponse(
+            payment_hash=payment.payment_hash,
+            payment_request=payment.payment_request or payment.bolt11,
+            checking_id=payment.checking_id,
+        )
+
+    @extension_api_method(
+        method_id="wallet.list_user_wallets",
+        namespace="wallet",
+        name="List user wallets",
+        host_name="list_user_wallets",
+        sdk_name="listUserWallets",
+        description="List wallets available to the authenticated extension user.",
+        required_permission="wallet.list",
+    )
+    async def wallet_list_user_wallets(
+        self, request: EmptyRequest
+    ) -> ListUserWalletsResponse:
+        if not self.user_id:
+            raise PermissionError(
+                "Listing user wallets requires an authenticated user context."
+            )
+
+        from lnbits.core.crud.wallets import get_wallets
+
+        user_wallets = await get_wallets(self.user_id)
+        if user_wallets is None:
+            raise PermissionError(
+                "Listing user wallets requires an authenticated user context."
+            )
+        return ListUserWalletsResponse(
+            wallets=[
+                UserWalletSummary(id=w.id, name=w.name, currency=w.currency)
+                for w in user_wallets
+            ]
+        )
+
+    @extension_api_method(
+        method_id="wallet.balance",
+        namespace="wallet",
+        name="Read wallet balance",
+        host_name="wallet_balance",
+        sdk_name="balance",
+        description="Read the balance of a wallet available to the user.",
+        required_permission="wallet.balance.read",
+    )
+    async def wallet_balance(
+        self, request: WalletBalanceRequest
+    ) -> WalletBalanceResponse:
+        from lnbits.core.crud.wallets import get_wallet
+
+        if not self.user_id:
+            raise PermissionError(
+                "Reading a wallet balance requires an authenticated user context."
+            )
+
+        wallet = await get_wallet(request.wallet_id)
+        if wallet is None or wallet.user != self.user_id:
+            raise PermissionError("Reading this wallet balance is not allowed.")
+
+        withdrawable_msat = max(wallet.withdrawable_balance, 0)
+        fee_reserve_msat = max(wallet.balance_msat - withdrawable_msat, 0)
+        return WalletBalanceResponse(
+            wallet_id=wallet.id,
+            name=wallet.name,
+            currency=wallet.currency,
+            balance_msat=wallet.balance_msat,
+            balance_sat=wallet.balance,
+            withdrawable_msat=withdrawable_msat,
+            withdrawable_sat=withdrawable_msat // 1000,
+            fee_reserve_msat=fee_reserve_msat,
+            fee_reserve_sat=fee_reserve_msat // 1000,
+            can_send_payments=wallet.can_send_payments,
+        )
+
+    @extension_api_method(
+        method_id="wallet.pay_invoice",
+        namespace="wallet",
+        name="Pay invoice",
+        host_name="pay_invoice",
+        sdk_name="payInvoice",
+        description="Pay a Lightning invoice from a wallet available to the user.",
+        required_permission="wallet.pay_invoice",
+    )
+    async def wallet_pay_invoice(
+        self, request: PayInvoiceRequest
+    ) -> PayInvoiceResponse:
+        from lnbits.core.crud.wallets import get_wallet
+        from lnbits.core.services.payments import pay_invoice
+        from lnbits.exceptions import PaymentError
+
+        if not self.user_id:
+            raise PermissionError(
+                "Paying an invoice requires an authenticated user context."
+            )
+
+        wallet = await get_wallet(request.wallet_id)
+        if wallet is None or wallet.user != self.user_id:
+            raise PermissionError("Paying invoices from this wallet is not allowed.")
+
+        try:
+            payment = await pay_invoice(
+                wallet_id=request.wallet_id,
+                payment_request=request.payment_request,
+                max_sat=request.max_sat,
+                extra={"tag": self.extension_id, **request.extra},
+                description=request.description,
+                tag=self.extension_id,
+            )
+        except (PaymentError, ValueError) as exc:
+            return PayInvoiceResponse(ok=False, error=str(exc))
+
+        return PayInvoiceResponse(
+            ok=True,
+            checking_id=payment.checking_id,
+            payment_hash=payment.payment_hash,
+            status=payment.status,
+            amount_msat=abs(payment.amount),
+            fee_msat=abs(payment.fee),
+            pending=payment.pending,
+            success=payment.success,
+        )
+
+    @extension_api_method(
+        method_id="http.request",
+        namespace="http",
+        name="HTTP request",
+        host_name="http_request",
+        sdk_name="request",
+        description="Make an outbound HTTP request to an allowed host.",
+        required_permission="http.request",
+        require_auth=True,
+    )
+    async def http_request(self, request: HttpRequest) -> HttpResponse:
+        from ..client.http import send_extension_http_request
+
+        policies = self.permission_policies.get("http.request") or []
+        return await send_extension_http_request(self.extension_id, policies, request)
+
+    @extension_api_method(
+        method_id="extension.api.request",
+        namespace="extension",
+        name="Extension API request",
+        host_name="extension_api_request",
+        sdk_name="request",
+        description="Call an allowed installed extension API.",
+        required_permission="extension.api.request",
+        require_auth=True,
+    )
+    async def extension_api_request(self, request: ExtensionApiRequest) -> HttpResponse:
+
+        policies = self.permission_policies.get("extension.api.request") or []
+        return await send_extension_api_request(
+            self.extension_id,
+            policies,
+            self.user_id,
+            self.access_token,
+            request,
+        )
+
+    @extension_api_method(
+        method_id="system.random_id",
+        namespace="system",
+        name="Random ID",
+        host_name="random_id",
+        sdk_name="id",
+        description="Create a random extension-local identifier.",
+        require_auth=False,
+    )
+    async def system_random_id(self, request: RandomIdRequest) -> RandomIdResponse:
+        return RandomIdResponse(
+            id=f"{request.prefix}_{secrets.token_urlsafe(12).replace('-', '_')}"
+        )
+
+    @extension_api_method(
+        method_id="system.now",
+        namespace="system",
+        name="Current timestamp",
+        host_name="now",
+        sdk_name="now",
+        description="Return the current Unix timestamp.",
+        require_auth=False,
+    )
+    async def system_now(self, request: EmptyRequest) -> NowResponse:
+        return NowResponse(timestamp=int(time.time()))
+
+    @extension_api_method(
+        method_id="system.log",
+        namespace="system",
+        name="Log message",
+        host_name="log",
+        sdk_name="log",
+        description="Write a bounded message to the extension log.",
+        require_auth=False,
+    )
+    async def system_log(self, request: LogRequest) -> LogResponse:
+        log = getattr(logger, request.level)
+        log("extension:%s %s", self.extension_id, request.message)
+        return LogResponse()
+
+    @staticmethod
+    def _permission_data(
+        permissions: Iterable[Any],
+    ) -> tuple[set[str], dict[str, list[Any]]]:
+        permission_ids: set[str] = set()
+        policies: dict[str, list[Any]] = {}
+
+        for permission in permissions:
+            if isinstance(permission, str):
+                permission_ids.add(permission)
+                continue
+
+            permission_id: str | None = None
+            permission_policies: Any = None
+            if isinstance(permission, Mapping):
+                permission_id = permission.get("id")  # type: ignore[assignment]
+                permission_policies = permission.get("policies")
+            else:
+                permission_id = getattr(permission, "id", None)
+                permission_policies = getattr(permission, "policies", None)
+
+            if not permission_id:
+                continue
+            permission_ids.add(permission_id)
+            if isinstance(permission_policies, list):
+                policies[permission_id] = permission_policies
+
+        return permission_ids, policies
+
+    def _public_storage_fields(self, table: str) -> set[str]:
+        tables = self.permission_policies.get("ext.storage.read_public")
+        if not isinstance(tables, list) or not tables:
+            raise PermissionError(
+                "Public storage reads require policies for "
+                "'ext.storage.read_public'."
+            )
+
+        for table_policy in tables:
+            if not isinstance(table_policy, dict):
+                continue
+            if table_policy.get("table_name") != table:
+                continue
+            public_fields = table_policy.get("public_fields")
+            if not isinstance(public_fields, list) or not all(
+                isinstance(field, str) and field for field in public_fields
+            ):
+                raise PermissionError(
+                    f"Public storage table '{table}' has no valid public fields."
+                )
+            return set(public_fields)
+
+        raise PermissionError(f"Storage table '{table}' is not publicly readable.")
+
+    def _public_invoice_wallet_sources(self) -> list[dict[str, str]]:
+        policies = self.permission_policies.get("wallet.create_invoice_public")
+        if not isinstance(policies, list) or not policies:
+            raise PermissionError("Public invoice creation requires a policies list.")
+
+        sources: list[dict[str, str]] = []
+        for source_policy in policies:
+            if not isinstance(source_policy, dict):
+                raise PermissionError(
+                    "Public invoice creation policies must be objects."
+                )
+            table = source_policy.get("table")
+            wallet_field = source_policy.get("wallet_field")
+            if not isinstance(table, str) or not table:
+                raise PermissionError(
+                    "Public invoice creation requires a storage table policy."
+                )
+            if not isinstance(wallet_field, str) or not wallet_field:
+                raise PermissionError(
+                    "Public invoice creation requires a wallet field policy."
+                )
+            sources.append({"table": table, "wallet_field": wallet_field})
+
+        if not sources:
+            raise PermissionError(
+                "Public invoice creation requires at least one valid policy."
+            )
+        return sources
+
+    def require_permission(self, permission: str | None) -> None:
+        if permission and permission not in self.permissions:
+            raise PermissionError(
+                f"Extension '{self.extension_id}' is missing permission '{permission}'."
+            )
+
+    def has_authenticated_context(self) -> bool:
+        return bool(self.user_id) or self.context == "event"
+
+    def _require_owner_id(self) -> str:
+        if not self.owner_id:
+            raise PermissionError("Extension API method requires an owner context.")
+        return self.owner_id
+
+    def __repr__(self) -> str:
+        return (
+            "ExtensionHostAPI("
+            f"extension_id={self.extension_id!r}, "
+            f"context={self.context!r}, "
+            f"owner_id={self.owner_id!r}"
+            ")"
+        )

lnbits/core/wasm_ext/api/models.py

@@ -0,0 +1,360 @@
+import json
+from dataclasses import dataclass
+from typing import Any, Literal
+
+from pydantic import BaseModel, Field, root_validator
+
+
+@dataclass(frozen=True)
+class ExtensionAPIMethodExport:
+    method_id: str
+    namespace: str
+    name: str
+    host_interface: str
+    host_name: str
+    sdk_name: str
+    description: str
+    required_permission: str | None = None
+    require_auth: bool = True
+
+
+@dataclass(frozen=True)
+class ExtensionAPIMethod:
+    method_id: str
+    namespace: str
+    name: str
+    python_name: str
+    host_interface: str
+    host_name: str
+    sdk_name: str
+    description: str
+    request_model: type[BaseModel]
+    response_model: type[BaseModel]
+    required_permission: str | None = None
+    require_auth: bool = True
+
+    @property
+    def sdk_qualified_name(self) -> str:
+        return f"{self.namespace}.{self.sdk_name}"
+
+
+class EmptyRequest(BaseModel):
+    pass
+
+
+class StorageGetRequest(BaseModel):
+    table: str = Field(..., min_length=1, max_length=128)
+    id: str = Field(..., min_length=1, max_length=512)
+
+
+class StorageGetResponse(BaseModel):
+    data_json: str | None = None
+
+
+class StorageSetRequest(BaseModel):
+    table: str = Field(..., min_length=1, max_length=128)
+    data: dict[str, Any] = Field(default_factory=dict)
+
+    @root_validator(pre=True)
+    def parse_data_json(cls, values: dict[str, Any]) -> dict[str, Any]:
+        data_json = values.get("data_json")
+        if data_json is not None and "data" not in values:
+            values["data"] = json.loads(data_json)
+        return values
+
+
+class StorageSetResponse(BaseModel):
+    ok: bool = True
+
+
+class StoragePaginatedRequest(BaseModel):
+    table: str = Field(..., min_length=1, max_length=128)
+    filters: dict[str, Any] = Field(default_factory=dict)
+    search: str | None = Field(None, max_length=256)
+    search_fields: list[str] = Field(default_factory=list)
+    sort_by: str | None = Field(None, min_length=1, max_length=128)
+    descending: bool = False
+    limit: int = Field(25, ge=1, le=1000)
+    offset: int = Field(0, ge=0)
+
+    @root_validator(pre=True)
+    def parse_json_fields(cls, values: dict[str, Any]) -> dict[str, Any]:
+        filters_json = values.get("filters_json")
+        if filters_json is not None and "filters" not in values:
+            values["filters"] = json.loads(filters_json)
+
+        search_fields_json = values.get("search_fields_json")
+        if search_fields_json is not None and "search_fields" not in values:
+            values["search_fields"] = json.loads(search_fields_json)
+
+        if values.get("sort_by") == "":
+            values["sort_by"] = None
+        return values
+
+
+class StoragePaginatedResponse(BaseModel):
+    rows_json: str = "[]"
+    total: int = 0
+
+
+class StorageDeleteRequest(BaseModel):
+    table: str = Field(..., min_length=1, max_length=128)
+    id: str = Field(..., min_length=1, max_length=512)
+
+
+class StorageDeleteResponse(BaseModel):
+    ok: bool = True
+
+
+class CreateInvoiceRequest(BaseModel):
+    wallet_id: str = Field(..., min_length=1, max_length=128)
+    amount: float = Field(..., gt=0)
+    currency: str = Field("sat", min_length=1, max_length=8)
+    memo: str = Field(..., max_length=512)
+    tag: str = Field(..., min_length=1, max_length=64)
+    extra: dict[str, str] = Field(default_factory=dict)
+
+
+class CreateInvoicePublicRequest(BaseModel):
+    source_id: str = Field(
+        ...,
+        min_length=1,
+        max_length=512,
+        description="The source ID (entry id) of the wallet to create the invoice for.",
+    )
+    amount: float = Field(..., gt=0)
+    currency: str = Field(..., min_length=1, max_length=8)
+    memo: str = Field("", max_length=512)
+    extra: dict[str, Any] = Field(default_factory=dict)
+
+    @root_validator
+    def validate_extra_size(cls, values: dict[str, Any]) -> dict[str, Any]:
+        extra = values.get("extra") or {}
+        try:
+            encoded = json.dumps(extra, separators=(",", ":"))
+        except TypeError as exc:
+            raise ValueError("extra must be JSON serializable.") from exc
+        if len(encoded.encode()) > 4096:
+            raise ValueError("extra must not exceed 4096 bytes.")
+        values["extra"] = extra
+        return values
+
+
+class CreateInvoiceResponse(BaseModel):
+    payment_hash: str
+    payment_request: str
+    checking_id: str
+
+
+class UserWalletSummary(BaseModel):
+    id: str
+    name: str
+    currency: str | None = None
+
+
+class ListUserWalletsResponse(BaseModel):
+    wallets: list[UserWalletSummary] = Field(default_factory=list)
+
+
+class WalletBalanceRequest(BaseModel):
+    wallet_id: str = Field(..., min_length=1, max_length=128)
+
+
+class WalletBalanceResponse(BaseModel):
+    wallet_id: str
+    name: str
+    currency: str | None = None
+    balance_msat: int
+    balance_sat: int
+    withdrawable_msat: int
+    withdrawable_sat: int
+    fee_reserve_msat: int
+    fee_reserve_sat: int
+    can_send_payments: bool
+
+
+class PayInvoiceRequest(BaseModel):
+    wallet_id: str = Field(..., min_length=1, max_length=128)
+    payment_request: str = Field(..., min_length=1, max_length=8192)
+    max_sat: int | None = Field(None, gt=0)
+    description: str = Field("", max_length=512)
+    extra: dict[str, str] = Field(default_factory=dict)
+
+
+class PayInvoiceResponse(BaseModel):
+    ok: bool = True
+    error: str | None = None
+    checking_id: str | None = None
+    payment_hash: str | None = None
+    status: str | None = None
+    amount_msat: int = 0
+    fee_msat: int = 0
+    pending: bool = False
+    success: bool = False
+
+
+class HttpRequest(BaseModel):
+    method: Literal["DELETE", "GET", "HEAD", "PATCH", "POST", "PUT"] = "GET"
+    url: str = Field(..., min_length=1, max_length=2048)
+    headers: dict[str, str] = Field(default_factory=dict)
+    body: str | None = Field(None, max_length=65536)
+
+    @root_validator(pre=True)
+    def normalize_method(cls, values: dict[str, Any]) -> dict[str, Any]:
+        method = values.get("method")
+        if isinstance(method, str):
+            values["method"] = method.upper()
+        return values
+
+    @root_validator
+    def validate_headers_size(cls, values: dict[str, Any]) -> dict[str, Any]:
+        headers = values.get("headers") or {}
+        if len(headers) > 32:
+            raise ValueError("headers must not contain more than 32 entries.")
+        for key, value in headers.items():
+            if len(key) > 128 or len(value) > 4096:
+                raise ValueError("headers are too large.")
+        values["headers"] = headers
+        return values
+
+
+class HttpResponse(BaseModel):
+    status_code: int
+    headers: dict[str, str] = Field(default_factory=dict)
+    body: str = ""
+
+
+class ExtensionApiRequest(BaseModel):
+    extension_id: str = Field(..., min_length=1, max_length=128)
+    method: Literal["DELETE", "GET", "HEAD", "PATCH", "POST", "PUT"] = "GET"
+    path: str = Field(..., min_length=1, max_length=2048)
+    body: str | None = Field(None, max_length=65536)
+
+    @root_validator(pre=True)
+    def normalize_method(cls, values: dict[str, Any]) -> dict[str, Any]:
+        method = values.get("method")
+        if isinstance(method, str):
+            values["method"] = method.upper()
+        return values
+
+
+class CurrencyListResponse(BaseModel):
+    currencies: list[str] = Field(default_factory=list)
+
+
+class CurrencyRateRequest(BaseModel):
+    currency: str = Field(..., min_length=1, max_length=8)
+
+
+class CurrencyRateResponse(BaseModel):
+    rate: float
+    price: float
+
+
+class CurrencyConvertRequest(BaseModel):
+    amount: float = Field(..., gt=0)
+    from_currency: str = Field(..., alias="from", min_length=1, max_length=8)
+    to: str = Field(..., min_length=1, max_length=256)
+
+    class Config:
+        allow_population_by_field_name = True
+
+
+class CurrencyConvertResponse(BaseModel):
+    amounts: list[tuple[str, float]] = Field(default_factory=list)
+
+
+class FiatToSatsRequest(BaseModel):
+    amount: float = Field(..., gt=0)
+    currency: str = Field(..., min_length=1, max_length=8)
+
+
+class FiatToSatsResponse(BaseModel):
+    amount_sat: int
+
+
+class SatsToFiatRequest(BaseModel):
+    amount: float = Field(..., gt=0)
+    currency: str = Field(..., min_length=1, max_length=8)
+
+
+class SatsToFiatResponse(BaseModel):
+    amount: float
+
+
+class ServerHealthResponse(BaseModel):
+    server_time: int
+    up_time: str
+
+
+class Bolt11Request(BaseModel):
+    bolt11: str = Field(..., min_length=1, max_length=8192)
+
+
+class DecodeInvoiceResponse(BaseModel):
+    valid: bool = True
+    payment_hash: str | None = None
+    amount_msat: int | None = None
+    expiry: int | None = None
+    expires_at: int | None = None
+    memo: str | None = None
+
+
+class ValidateInvoiceResponse(BaseModel):
+    valid: bool
+    error: str | None = None
+
+
+class InvoicePaymentHashResponse(BaseModel):
+    payment_hash: str
+
+
+class InvoiceAmountMsatResponse(BaseModel):
+    amount_msat: int | None = None
+
+
+class InvoiceExpiryResponse(BaseModel):
+    expires_at: int | None = None
+
+
+class InvoiceMemoResponse(BaseModel):
+    memo: str | None = None
+
+
+class VerifyPreimageRequest(BaseModel):
+    preimage: str = Field(..., min_length=64, max_length=64)
+    payment_hash: str = Field(..., min_length=64, max_length=64)
+
+
+class VerifyPreimageResponse(BaseModel):
+    valid: bool
+
+
+class RandomSecretAndHashRequest(BaseModel):
+    length: int = Field(32, ge=16, le=64)
+
+
+class RandomSecretAndHashResponse(BaseModel):
+    secret: str
+    hash: str
+
+
+class RandomIdRequest(BaseModel):
+    prefix: str = Field(..., min_length=1, max_length=32)
+
+
+class RandomIdResponse(BaseModel):
+    id: str
+
+
+class NowResponse(BaseModel):
+    timestamp: int
+
+
+class LogRequest(BaseModel):
+    level: Literal["debug", "info", "warning", "error"] = "info"
+    message: str = Field(..., min_length=1, max_length=2048)
+
+
+class LogResponse(BaseModel):
+    ok: bool = True

lnbits/core/wasm_ext/api/permissions.py

@@ -0,0 +1,59 @@
+from collections.abc import Iterable
+from typing import Any
+
+from lnbits.core.models.extensions import ExtensionPermission, InstallableExtension
+from lnbits.core.wasm_ext.api.registry import extension_api_permission_ids
+
+
+def validate_extension_permissions(
+    ext_id: str,
+    permissions: Iterable[ExtensionPermission],
+    *,
+    strict: bool = True,
+) -> list[ExtensionPermission]:
+    known_permission_ids = extension_api_permission_ids()
+    normalized_permissions: list[ExtensionPermission] = []
+    unknown_ids: list[str] = []
+
+    for permission in permissions:
+        if permission.id not in known_permission_ids:
+            unknown_ids.append(permission.id)
+            if strict:
+                continue
+        normalized_permissions.append(permission.copy(update={"label": None}))
+
+    if unknown_ids and strict:
+        raise ValueError(
+            f"Extension '{ext_id}' requests unknown permissions: "
+            + ", ".join(sorted(set(unknown_ids)))
+        )
+
+    return normalized_permissions
+
+
+def validate_wasm_extension_permissions(
+    ext_info: InstallableExtension,
+    granted_permissions: list[ExtensionPermission] | None,
+    extension_config: dict[str, Any],
+) -> list[ExtensionPermission]:
+    if extension_config.get("extension_type") != "wasm":
+        return []
+
+    requested_permissions = validate_extension_permissions(
+        ext_info.id,
+        ExtensionPermission.list_from_config(extension_config),
+    )
+    if not requested_permissions:
+        return []
+
+    if granted_permissions is None:
+        raise ValueError(f"Extension '{ext_info.id}' requires permission approval.")
+
+    requested_ids = {permission.id for permission in requested_permissions}
+    granted_ids = {permission.id for permission in granted_permissions}
+    if requested_ids != granted_ids:
+        raise ValueError(
+            f"Extension '{ext_info.id}' was not granted all requested permissions."
+        )
+
+    return requested_permissions

lnbits/core/wasm_ext/api/registry.py

@@ -0,0 +1,199 @@
+from __future__ import annotations
+
+import inspect
+from collections.abc import Awaitable, Callable
+from functools import wraps
+from typing import Any, TypeVar, cast, get_type_hints
+
+from pydantic import BaseModel
+
+from .models import ExtensionAPIMethod, ExtensionAPIMethodExport
+
+_EXTENSION_API_METHOD_ATTR = "__lnbits_extension_api_method__"
+_EXTENSION_RUNTIME_PERMISSION_IDS = {"ui.camera.scan_qr"}
+_RequestModel = TypeVar("_RequestModel", bound=BaseModel)
+_ResponseModel = TypeVar("_ResponseModel", bound=BaseModel)
+
+
+def extension_api_method(
+    *,
+    method_id: str,
+    namespace: str,
+    name: str,
+    host_name: str,
+    sdk_name: str,
+    description: str,
+    host_interface: str = "host",
+    required_permission: str | None = None,
+    require_auth: bool = True,
+) -> Callable[
+    [Callable[[Any, _RequestModel], Awaitable[_ResponseModel]]],
+    Callable[[Any, _RequestModel], Awaitable[_ResponseModel]],
+]:
+    export = ExtensionAPIMethodExport(
+        method_id=method_id,
+        namespace=namespace,
+        name=name,
+        host_interface=host_interface,
+        host_name=host_name,
+        sdk_name=sdk_name,
+        description=description,
+        required_permission=required_permission,
+        require_auth=require_auth,
+    )
+
+    def decorator(
+        function: Callable[[Any, _RequestModel], Awaitable[_ResponseModel]],
+    ) -> Callable[[Any, _RequestModel], Awaitable[_ResponseModel]]:
+        @wraps(function)
+        async def wrapper(self: Any, request: _RequestModel) -> _ResponseModel:
+            api = getattr(self, "api", self)
+            if require_auth and not api.has_authenticated_context():
+                raise PermissionError(
+                    f"Extension API method '{method_id}' requires authentication."
+                )
+            api.require_permission(required_permission)
+            return await function(self, request)
+
+        setattr(wrapper, _EXTENSION_API_METHOD_ATTR, export)
+        return wrapper
+
+    return decorator
+
+
+def list_extension_api_methods(
+    api_cls: type[Any] | None = None,
+) -> list[ExtensionAPIMethod]:
+    api_cls = _default_api_cls(api_cls)
+    methods: list[ExtensionAPIMethod] = []
+
+    for prefix, method_cls in _extension_api_method_sources(api_cls):
+        for python_name, function in inspect.getmembers(method_cls, inspect.isfunction):
+            export = getattr(function, _EXTENSION_API_METHOD_ATTR, None)
+            if not export:
+                continue
+
+            request_model, response_model = _get_method_models(function)
+            methods.append(
+                ExtensionAPIMethod(
+                    method_id=export.method_id,
+                    namespace=export.namespace,
+                    name=export.name,
+                    python_name=f"{prefix}.{python_name}" if prefix else python_name,
+                    host_interface=export.host_interface,
+                    host_name=export.host_name,
+                    sdk_name=export.sdk_name,
+                    description=export.description,
+                    request_model=request_model,
+                    response_model=response_model,
+                    required_permission=export.required_permission,
+                    require_auth=export.require_auth,
+                )
+            )
+
+    return sorted(methods, key=lambda method: method.method_id)
+
+
+def extension_api_permission_ids(api_cls: type[Any] | None = None) -> set[str]:
+    permissions = {
+        method.required_permission
+        for method in list_extension_api_methods(api_cls)
+        if method.required_permission
+    }
+    permissions.update(_EXTENSION_RUNTIME_PERMISSION_IDS)
+    return permissions
+
+
+def get_extension_api_method(
+    method_id: str,
+    api_cls: type[Any] | None = None,
+) -> ExtensionAPIMethod:
+    for method in list_extension_api_methods(api_cls):
+        if method.method_id == method_id:
+            return method
+    raise KeyError(f"Unknown extension API method '{method_id}'.")
+
+
+def extension_api_contract(api_cls: type[Any] | None = None) -> dict[str, object]:
+    return {
+        "version": 1,
+        "methods": [
+            {
+                "id": method.method_id,
+                "namespace": method.namespace,
+                "name": method.name,
+                "python_name": method.python_name,
+                "host_interface": method.host_interface,
+                "host_name": method.host_name,
+                "sdk_name": method.sdk_name,
+                "sdk_qualified_name": method.sdk_qualified_name,
+                "description": method.description,
+                "required_permission": method.required_permission,
+                "require_auth": method.require_auth,
+                "request_schema": method.request_model.schema(
+                    ref_template="#/definitions/{model}"
+                ),
+                "response_schema": method.response_model.schema(
+                    ref_template="#/definitions/{model}"
+                ),
+            }
+            for method in list_extension_api_methods(api_cls)
+        ],
+    }
+
+
+def _default_api_cls(api_cls: type[Any] | None) -> type[Any]:
+    if api_cls is not None:
+        return api_cls
+
+    from .host import ExtensionHostAPI
+
+    return ExtensionHostAPI
+
+
+def _extension_api_method_sources(
+    api_cls: type[Any],
+) -> list[tuple[str, type[Any]]]:
+    sources: list[tuple[str, type[Any]]] = [("", api_cls)]
+
+    from .host import ExtensionHostAPI
+
+    if issubclass(api_cls, ExtensionHostAPI):
+        from .utils import extension_api_utils_method_classes
+
+        sources.extend(extension_api_utils_method_classes().items())
+    return sources
+
+
+def _get_method_models(
+    function: Callable[..., object],
+) -> tuple[type[BaseModel], type[BaseModel]]:
+    signature = inspect.signature(function)
+    request_parameters = [
+        parameter
+        for parameter in signature.parameters.values()
+        if parameter.name != "self"
+    ]
+    if len(request_parameters) != 1:
+        raise TypeError(
+            f"Extension API method '{function.__name__}' must accept one request model."
+        )
+
+    hints = get_type_hints(function)
+    request_model = hints.get(request_parameters[0].name)
+    response_model = hints.get("return")
+
+    if not _is_pydantic_model(request_model):
+        raise TypeError(
+            f"Extension API method '{function.__name__}' request must be a BaseModel."
+        )
+    if not _is_pydantic_model(response_model):
+        raise TypeError(
+            f"Extension API method '{function.__name__}' response must be a BaseModel."
+        )
+
+    return cast(type[BaseModel], request_model), cast(type[BaseModel], response_model)
+
+
+def _is_pydantic_model(value: object) -> bool:
+    return isinstance(value, type) and issubclass(value, BaseModel)

lnbits/core/wasm_ext/api/runtime.py

@@ -0,0 +1,138 @@
+from __future__ import annotations
+
+import inspect
+import re
+from collections.abc import Awaitable, Callable, Mapping
+from typing import Any
+
+from pydantic import BaseModel
+
+from .host import ExtensionHostAPI
+from .models import ExtensionAPIMethod
+from .registry import list_extension_api_methods
+
+HostImport = Callable[..., Awaitable[dict[str, Any]]]
+
+
+class ExtensionAPIHost:
+    def __init__(
+        self,
+        api: ExtensionHostAPI,
+        *,
+        api_cls: type[ExtensionHostAPI] = ExtensionHostAPI,
+    ) -> None:
+        self.api = api
+        self.methods = list_extension_api_methods(api_cls)
+        self._methods_by_host_name = self._index_methods(self.methods)
+
+    async def invoke(
+        self,
+        host_name: str,
+        payload: Mapping[str, Any] | BaseModel | None = None,
+    ) -> dict[str, Any]:
+        method = self._require_method(host_name)
+        request = self._request_model(method, payload)
+        handler = _resolve_attr_path(self.api, method.python_name)
+        response = handler(request)
+        if inspect.isawaitable(response):
+            response = await response
+        return self._response_payload(method, response)
+
+    def imports(self) -> dict[str, HostImport]:
+        return self.imports_for_interface("host")
+
+    def import_object(self) -> dict[str, dict[str, HostImport]]:
+        interfaces = sorted({method.host_interface for method in self.methods})
+        return {
+            f"lnbits:extension/{interface}": self.imports_for_interface(interface)
+            for interface in interfaces
+        }
+
+    def imports_for_interface(self, host_interface: str) -> dict[str, HostImport]:
+        return {
+            _snake_to_camel(method.host_name): self._make_import(method)
+            for method in self.methods
+            if method.host_interface == host_interface
+        }
+
+    def _make_import(self, method: ExtensionAPIMethod) -> HostImport:
+        async def host_import(
+            payload: Mapping[str, Any] | BaseModel | None = None,
+        ) -> dict[str, Any]:
+            return await self.invoke(method.method_id, payload)
+
+        return host_import
+
+    def _require_method(self, host_name: str) -> ExtensionAPIMethod:
+        method = self._methods_by_host_name.get(host_name)
+        if not method:
+            raise KeyError(f"Unknown extension host function '{host_name}'.")
+        return method
+
+    @staticmethod
+    def _index_methods(
+        methods: list[ExtensionAPIMethod],
+    ) -> dict[str, ExtensionAPIMethod]:
+        index: dict[str, ExtensionAPIMethod] = {}
+        for method in methods:
+            for host_name in {
+                method.method_id,
+                f"{method.host_interface}:{method.host_name}",
+                method.host_name,
+                _snake_to_camel(method.host_name),
+                method.host_name.replace("_", "-"),
+            }:
+                index[host_name] = method
+        return index
+
+    @staticmethod
+    def _request_model(
+        method: ExtensionAPIMethod,
+        payload: Mapping[str, Any] | BaseModel | None,
+    ) -> BaseModel:
+        if isinstance(payload, method.request_model):
+            return payload
+        if isinstance(payload, BaseModel):
+            payload = payload.dict()
+        if payload is None:
+            payload = {}
+        if not isinstance(payload, Mapping):
+            raise TypeError(
+                f"Host function '{method.host_name}' expects an object payload."
+            )
+        data = {_to_snake(key): value for key, value in payload.items()}
+        if isinstance(data.get("extra"), list):
+            data["extra"] = dict(data["extra"])
+        if isinstance(data.get("headers"), list):
+            data["headers"] = dict(data["headers"])
+        return method.request_model.parse_obj(data)
+
+    @staticmethod
+    def _response_payload(
+        method: ExtensionAPIMethod,
+        response: Any,
+    ) -> dict[str, Any]:
+        if not isinstance(response, method.response_model):
+            response = method.response_model.parse_obj(response)
+        payload = response.dict()
+        if method.method_id in {"http.request", "extension.api.request"} and isinstance(
+            payload.get("headers"), Mapping
+        ):
+            payload["headers"] = list(payload["headers"].items())
+        return {_snake_to_camel(key): value for key, value in payload.items()}
+
+
+def _snake_to_camel(value: str) -> str:
+    head, *tail = value.split("_")
+    return head + "".join(part.capitalize() for part in tail)
+
+
+def _to_snake(value: str) -> str:
+    value = value.replace("-", "_")
+    return re.sub(r"([a-z0-9])([A-Z])", r"\1_\2", value).lower()
+
+
+def _resolve_attr_path(value: Any, path: str) -> Any:
+    for part in path.split("."):
+        value = getattr(value, part)
+    return value

lnbits/core/wasm_ext/api/utils.py

@@ -0,0 +1,387 @@
+from __future__ import annotations
+
+import time
+from collections.abc import Iterable
+from datetime import datetime
+from typing import Any
+
+from lnbits import bolt11
+from lnbits.settings import settings
+from lnbits.utils.crypto import random_secret_and_hash, verify_preimage
+from lnbits.utils.exchange_rates import (
+    allowed_currencies,
+    fiat_amount_as_satoshis,
+    get_fiat_rate_and_price_satoshis,
+    satoshis_amount_as_fiat,
+)
+
+from .models import (
+    Bolt11Request,
+    CurrencyConvertRequest,
+    CurrencyConvertResponse,
+    CurrencyListResponse,
+    CurrencyRateRequest,
+    CurrencyRateResponse,
+    DecodeInvoiceResponse,
+    EmptyRequest,
+    FiatToSatsRequest,
+    FiatToSatsResponse,
+    InvoiceAmountMsatResponse,
+    InvoiceExpiryResponse,
+    InvoiceMemoResponse,
+    InvoicePaymentHashResponse,
+    RandomSecretAndHashRequest,
+    RandomSecretAndHashResponse,
+    SatsToFiatRequest,
+    SatsToFiatResponse,
+    ServerHealthResponse,
+    ValidateInvoiceResponse,
+    VerifyPreimageRequest,
+    VerifyPreimageResponse,
+)
+from .registry import extension_api_method
+
+
+class ExtensionAPIUtils:
+    def __init__(self, extension_id: str, permissions: Iterable[str]) -> None:
+        permission_set = set(permissions)
+        self.currencies = ExtensionCurrencyUtils(extension_id, permission_set)
+        self.server = ExtensionServerUtils(extension_id, permission_set)
+        self.lightning = ExtensionLightningUtils(extension_id, permission_set)
+
+
+class _ExtensionAPIUtilsGroup:
+    def __init__(self, extension_id: str, permissions: Iterable[str]) -> None:
+        self.extension_id = extension_id
+        self.permissions = set(permissions)
+
+    def require_permission(self, permission: str | None) -> None:
+        if permission and permission not in self.permissions:
+            raise PermissionError(
+                f"Extension '{self.extension_id}' is missing permission '{permission}'."
+            )
+
+    def has_authenticated_context(self) -> bool:
+        return False
+
+
+class ExtensionCurrencyUtils(_ExtensionAPIUtilsGroup):
+    @extension_api_method(
+        method_id="utils.currencies.list",
+        namespace="utils.currencies",
+        name="List currencies",
+        host_interface="utils-currencies",
+        host_name="list_currencies",
+        sdk_name="list",
+        description="List currencies supported by LNbits exchange-rate conversion.",
+        required_permission="utils.basic",
+        require_auth=False,
+    )
+    async def list(self, request: EmptyRequest) -> CurrencyListResponse:
+
+        return CurrencyListResponse(currencies=allowed_currencies())
+
+    @extension_api_method(
+        method_id="utils.currencies.rate",
+        namespace="utils.currencies",
+        name="Get currency rate",
+        host_interface="utils-currencies",
+        host_name="rate",
+        sdk_name="rate",
+        description="Get sats-per-fiat and BTC price for a currency.",
+        required_permission="utils.basic",
+        require_auth=False,
+    )
+    async def rate(self, request: CurrencyRateRequest) -> CurrencyRateResponse:
+
+        rate, price = await get_fiat_rate_and_price_satoshis(request.currency)
+        return CurrencyRateResponse(rate=rate, price=price)
+
+    @extension_api_method(
+        method_id="utils.currencies.convert",
+        namespace="utils.currencies",
+        name="Convert currency amount",
+        host_interface="utils-currencies",
+        host_name="convert",
+        sdk_name="convert",
+        description="Convert between sats, BTC, and supported fiat currencies.",
+        required_permission="utils.basic",
+        require_auth=False,
+    )
+    async def convert(self, request: CurrencyConvertRequest) -> CurrencyConvertResponse:
+
+        from_currency = request.from_currency
+        if from_currency == "sats":
+            from_currency = "sat"
+
+        amounts: list[tuple[str, float]] = []
+        if from_currency == "sat":
+            sats = int(request.amount)
+            amounts.append(("BTC", sats / 100_000_000))
+            amounts.append(("sats", sats))
+            for currency in request.to.split(","):
+                currency = currency.strip()
+                if currency:
+                    amounts.append(
+                        (
+                            currency.upper(),
+                            await satoshis_amount_as_fiat(sats, currency),
+                        )
+                    )
+        else:
+            sats = await fiat_amount_as_satoshis(request.amount, from_currency)
+            amounts.append((from_currency.upper(), request.amount))
+            amounts.append(("sats", sats))
+            amounts.append(("BTC", sats / 100_000_000))
+        return CurrencyConvertResponse(amounts=amounts)
+
+    @extension_api_method(
+        method_id="utils.currencies.fiat_to_sats",
+        namespace="utils.currencies",
+        name="Convert fiat to sats",
+        host_interface="utils-currencies",
+        host_name="fiat_to_sats",
+        sdk_name="fiatToSats",
+        description="Convert a fiat amount to sats.",
+        required_permission="utils.basic",
+        require_auth=False,
+    )
+    async def fiat_to_sats(self, request: FiatToSatsRequest) -> FiatToSatsResponse:
+
+        return FiatToSatsResponse(
+            amount_sat=await fiat_amount_as_satoshis(
+                request.amount,
+                request.currency,
+            )
+        )
+
+    @extension_api_method(
+        method_id="utils.currencies.sats_to_fiat",
+        namespace="utils.currencies",
+        name="Convert sats to fiat",
+        host_interface="utils-currencies",
+        host_name="sats_to_fiat",
+        sdk_name="satsToFiat",
+        description="Convert a sats amount to fiat.",
+        required_permission="utils.basic",
+        require_auth=False,
+    )
+    async def sats_to_fiat(self, request: SatsToFiatRequest) -> SatsToFiatResponse:
+
+        return SatsToFiatResponse(
+            amount=await satoshis_amount_as_fiat(request.amount, request.currency)
+        )
+
+
+class ExtensionServerUtils(_ExtensionAPIUtilsGroup):
+    @extension_api_method(
+        method_id="utils.server.health",
+        namespace="utils.server",
+        name="Server health",
+        host_interface="utils-server",
+        host_name="health",
+        sdk_name="health",
+        description="Return basic public LNbits server health data.",
+        required_permission="utils.basic",
+        require_auth=False,
+    )
+    async def health(self, request: EmptyRequest) -> ServerHealthResponse:
+
+        return ServerHealthResponse(
+            server_time=int(time.time()),
+            up_time=settings.lnbits_server_up_time,
+        )
+
+
+class ExtensionLightningUtils(_ExtensionAPIUtilsGroup):
+    @extension_api_method(
+        method_id="utils.lightning.decode_invoice",
+        namespace="utils.lightning",
+        name="Decode Lightning invoice",
+        host_interface="utils-lightning",
+        host_name="decode_invoice",
+        sdk_name="decodeInvoice",
+        description="Decode a BOLT11 Lightning invoice.",
+        required_permission="utils.basic",
+        require_auth=False,
+    )
+    async def decode_invoice(self, request: Bolt11Request) -> DecodeInvoiceResponse:
+        invoice = _decode_bolt11(request.bolt11)
+        return _decoded_invoice_response(invoice)
+
+    @extension_api_method(
+        method_id="utils.lightning.validate_invoice",
+        namespace="utils.lightning",
+        name="Validate Lightning invoice",
+        host_interface="utils-lightning",
+        host_name="validate_invoice",
+        sdk_name="validateInvoice",
+        description="Validate whether a string is a BOLT11 Lightning invoice.",
+        required_permission="utils.basic",
+        require_auth=False,
+    )
+    async def validate_invoice(self, request: Bolt11Request) -> ValidateInvoiceResponse:
+        try:
+            _decode_bolt11(request.bolt11)
+            return ValidateInvoiceResponse(valid=True)
+        except Exception as exc:
+            return ValidateInvoiceResponse(valid=False, error=str(exc))
+
+    @extension_api_method(
+        method_id="utils.lightning.invoice_payment_hash",
+        namespace="utils.lightning",
+        name="Get Lightning invoice payment hash",
+        host_interface="utils-lightning",
+        host_name="invoice_payment_hash",
+        sdk_name="invoicePaymentHash",
+        description="Get the payment hash from a BOLT11 Lightning invoice.",
+        required_permission="utils.basic",
+        require_auth=False,
+    )
+    async def invoice_payment_hash(
+        self, request: Bolt11Request
+    ) -> InvoicePaymentHashResponse:
+        return InvoicePaymentHashResponse(
+            payment_hash=str(_decode_bolt11(request.bolt11).payment_hash)
+        )
+
+    @extension_api_method(
+        method_id="utils.lightning.invoice_amount_msat",
+        namespace="utils.lightning",
+        name="Get Lightning invoice amount",
+        host_interface="utils-lightning",
+        host_name="invoice_amount_msat",
+        sdk_name="invoiceAmountMsat",
+        description="Get the amount in msat from a BOLT11 Lightning invoice.",
+        required_permission="utils.basic",
+        require_auth=False,
+    )
+    async def invoice_amount_msat(
+        self, request: Bolt11Request
+    ) -> InvoiceAmountMsatResponse:
+        return InvoiceAmountMsatResponse(
+            amount_msat=_invoice_amount_msat(_decode_bolt11(request.bolt11))
+        )
+
+    @extension_api_method(
+        method_id="utils.lightning.invoice_expiry",
+        namespace="utils.lightning",
+        name="Get Lightning invoice expiry",
+        host_interface="utils-lightning",
+        host_name="invoice_expiry",
+        sdk_name="invoiceExpiry",
+        description="Get the expiry timestamp from a BOLT11 Lightning invoice.",
+        required_permission="utils.basic",
+        require_auth=False,
+    )
+    async def invoice_expiry(self, request: Bolt11Request) -> InvoiceExpiryResponse:
+        return InvoiceExpiryResponse(
+            expires_at=_invoice_expires_at(_decode_bolt11(request.bolt11))
+        )
+
+    @extension_api_method(
+        method_id="utils.lightning.invoice_memo",
+        namespace="utils.lightning",
+        name="Get Lightning invoice memo",
+        host_interface="utils-lightning",
+        host_name="invoice_memo",
+        sdk_name="invoiceMemo",
+        description="Get the memo from a BOLT11 Lightning invoice.",
+        required_permission="utils.basic",
+        require_auth=False,
+    )
+    async def invoice_memo(self, request: Bolt11Request) -> InvoiceMemoResponse:
+        return InvoiceMemoResponse(memo=_invoice_memo(_decode_bolt11(request.bolt11)))
+
+    @extension_api_method(
+        method_id="utils.lightning.verify_preimage",
+        namespace="utils.lightning",
+        name="Verify Lightning preimage",
+        host_interface="utils-lightning",
+        host_name="verify_preimage",
+        sdk_name="verifyPreimage",
+        description="Verify that a preimage matches a payment hash.",
+        required_permission="utils.basic",
+        require_auth=False,
+    )
+    async def verify_preimage(
+        self, request: VerifyPreimageRequest
+    ) -> VerifyPreimageResponse:
+
+        return VerifyPreimageResponse(
+            valid=verify_preimage(request.preimage, request.payment_hash)
+        )
+
+    @extension_api_method(
+        method_id="utils.lightning.random_secret_and_hash",
+        namespace="utils.lightning",
+        name="Random Lightning secret and hash",
+        host_interface="utils-lightning",
+        host_name="random_secret_and_hash",
+        sdk_name="randomSecretAndHash",
+        description="Create a random secret and matching SHA256 hash.",
+        required_permission="utils.basic",
+        require_auth=False,
+    )
+    async def random_secret_and_hash(
+        self, request: RandomSecretAndHashRequest
+    ) -> RandomSecretAndHashResponse:
+
+        secret, payment_hash = random_secret_and_hash(request.length)
+        return RandomSecretAndHashResponse(secret=secret, hash=payment_hash)
+
+
+def extension_api_utils_method_classes() -> dict[str, type[_ExtensionAPIUtilsGroup]]:
+    return {
+        "utils.currencies": ExtensionCurrencyUtils,
+        "utils.server": ExtensionServerUtils,
+        "utils.lightning": ExtensionLightningUtils,
+    }
+
+
+def _decode_bolt11(payment_request: str) -> Any:
+
+    return bolt11.decode(payment_request)
+
+
+def _decoded_invoice_response(invoice: Any) -> DecodeInvoiceResponse:
+    return DecodeInvoiceResponse(
+        payment_hash=str(getattr(invoice, "payment_hash", "")) or None,
+        amount_msat=_invoice_amount_msat(invoice),
+        expiry=_invoice_expiry(invoice),
+        expires_at=_invoice_expires_at(invoice),
+        memo=_invoice_memo(invoice),
+    )
+
+
+def _invoice_amount_msat(invoice: Any) -> int | None:
+    amount_msat = getattr(invoice, "amount_msat", None)
+    if amount_msat is None:
+        return None
+    return int(amount_msat)
+
+
+def _invoice_expiry(invoice: Any) -> int | None:
+    expiry = getattr(invoice, "expiry", None)
+    if expiry is None:
+        return None
+    return int(expiry)
+
+
+def _invoice_expires_at(invoice: Any) -> int | None:
+    expiry_date = getattr(invoice, "expiry_date", None)
+    if isinstance(expiry_date, datetime):
+        return int(expiry_date.timestamp())
+
+    date = getattr(invoice, "date", None)
+    expiry = getattr(invoice, "expiry", None)
+    if isinstance(date, datetime) and expiry is not None:
+        return int(date.timestamp() + int(expiry))
+    if isinstance(date, (int, float)) and expiry is not None:
+        return int(date + int(expiry))
+    return None
+
+
+def _invoice_memo(invoice: Any) -> str | None:
+    memo = getattr(invoice, "description", None)
+    return str(memo) if memo is not None else None

lnbits/core/wasm_ext/client/__init__.py

@@ -0,0 +1,4 @@
+from .extensions import send_extension_api_request
+from .http import send_extension_http_request
+
+__all__ = ["send_extension_api_request", "send_extension_http_request"]

lnbits/core/wasm_ext/client/extensions.py

@@ -0,0 +1,196 @@
+from __future__ import annotations
+
+import posixpath
+import re
+from typing import Any
+from urllib.parse import unquote, urlsplit, urlunsplit
+
+import httpx
+
+from lnbits.core.crud.extensions import (
+    get_installed_extension,
+    get_user_active_extensions_ids,
+)
+from lnbits.settings import settings
+
+from ..api.models import ExtensionApiRequest, HttpResponse
+
+EXTENSION_API_TIMEOUT_SECONDS = 10.0
+EXTENSION_API_MAX_RESPONSE_BYTES = 262_144
+
+_READ_METHODS = {"GET", "HEAD"}
+_WRITE_METHODS = {"DELETE", "PATCH", "POST", "PUT"}
+_EXTENSION_ID_RE = re.compile(r"^[A-Za-z0-9_-]+$")
+_FORBIDDEN_RESPONSE_HEADERS = {
+    "connection",
+    "content-length",
+    "set-cookie",
+    "transfer-encoding",
+}
+
+
+async def send_extension_api_request(
+    caller_extension_id: str,
+    policies: list[Any],
+    user_id: str | None,
+    access_token: str | None,
+    request: ExtensionApiRequest,
+) -> HttpResponse:
+    if not user_id:
+        raise PermissionError("Extension API requests require authentication.")
+    if not access_token:
+        raise PermissionError("Extension API requests require an account access token.")
+
+    target_extension_id = _target_extension_id(request.extension_id)
+    access = _target_extension_access(policies, target_extension_id)
+    _require_method_access(caller_extension_id, target_extension_id, access, request)
+    await _require_enabled_extension(target_extension_id, user_id)
+
+    path = _extension_api_path(request.path)
+    body = request.body.encode() if request.body is not None else b""
+    if len(body) > 65_536:
+        raise ValueError("Extension API request body is too large.")
+
+    url = f"http://{settings.host}:{settings.port}/{target_extension_id}{path}"
+    try:
+        async with httpx.AsyncClient(
+            follow_redirects=False,
+            timeout=EXTENSION_API_TIMEOUT_SECONDS,
+            trust_env=False,
+        ) as client:
+            async with client.stream(
+                request.method,
+                url,
+                headers={"Authorization": f"Bearer {access_token}"},
+                content=body,
+            ) as response:
+                response_body = await _read_limited_response(response)
+                return HttpResponse(
+                    status_code=response.status_code,
+                    headers=_response_headers(dict(response.headers)),
+                    body=response_body.decode(response.encoding or "utf-8", "replace"),
+                )
+    except httpx.RequestError as exc:
+        raise ValueError("Extension API request failed.") from exc
+
+
+def _target_extension_id(extension_id: str) -> str:
+    target = extension_id.strip()
+    if not target or not _EXTENSION_ID_RE.match(target):
+        raise PermissionError("Extension API request has an invalid target extension.")
+    return target
+
+
+def _target_extension_access(policies: list[Any], target_extension_id: str) -> set[str]:
+    if not isinstance(policies, list) or not policies:
+        raise PermissionError(
+            "Extension API requests require a non-empty extensions policy."
+        )
+
+    for extension in policies:
+        if isinstance(extension, str):
+            extension_id = extension
+            access = ["read"]
+        elif isinstance(extension, dict):
+            raw_extension_id = extension.get("id")
+            raw_access = extension.get("access")
+            if not isinstance(raw_extension_id, str):
+                continue
+            if not isinstance(raw_access, list):
+                raise PermissionError(
+                    f"Extension API target '{target_extension_id}' "
+                    "has no access policy."
+                )
+            extension_id = raw_extension_id
+            access = raw_access
+        else:
+            continue
+
+        if extension_id != target_extension_id:
+            continue
+        clean_access = {
+            item
+            for item in access
+            if isinstance(item, str) and item in {"read", "write"}
+        }
+        if clean_access:
+            return clean_access
+        break
+
+    raise PermissionError(
+        f"Extension API target '{target_extension_id}' is not allowed."
+    )
+
+
+def _require_method_access(
+    caller_extension_id: str,
+    target_extension_id: str,
+    access: set[str],
+    request: ExtensionApiRequest,
+) -> None:
+    if request.method in _READ_METHODS:
+        required_access = "read"
+    elif request.method in _WRITE_METHODS:
+        required_access = "write"
+    else:
+        raise PermissionError("Extension API request method is not allowed.")
+
+    if required_access not in access:
+        raise PermissionError(
+            f"Extension '{caller_extension_id}' cannot {required_access} "
+            f"extension '{target_extension_id}'."
+        )
+
+
+async def _require_enabled_extension(target_extension_id: str, user_id: str) -> None:
+    extension = await get_installed_extension(target_extension_id)
+    if not extension or not extension.active:
+        raise PermissionError(
+            f"Target extension '{target_extension_id}' is not installed or enabled."
+        )
+
+    active_extensions = await get_user_active_extensions_ids(user_id)
+    if target_extension_id not in active_extensions:
+        raise PermissionError(
+            f"Target extension '{target_extension_id}' is not active for this user."
+        )
+
+
+def _extension_api_path(path: str) -> str:
+    parts = urlsplit(path)
+    if parts.scheme or parts.netloc:
+        raise PermissionError("Extension API request path must be relative.")
+    if parts.fragment:
+        raise PermissionError("Extension API request path cannot include a fragment.")
+    if not parts.path.startswith("/api/"):
+        raise PermissionError("Extension API request path must start with '/api/'.")
+
+    decoded_path = unquote(parts.path)
+    path_parts = decoded_path.split("/")
+    if any(part == ".." for part in path_parts):
+        raise PermissionError("Extension API request path cannot traverse directories.")
+
+    normalized = posixpath.normpath(decoded_path)
+    if normalized != decoded_path.rstrip("/") or not normalized.startswith("/api/"):
+        raise PermissionError("Extension API request path is invalid.")
+
+    return urlunsplit(("", "", parts.path, parts.query, ""))
+
+
+async def _read_limited_response(response: httpx.Response) -> bytes:
+    chunks: list[bytes] = []
+    size = 0
+    async for chunk in response.aiter_bytes():
+        size += len(chunk)
+        if size > EXTENSION_API_MAX_RESPONSE_BYTES:
+            raise ValueError("Extension API response is too large.")
+        chunks.append(chunk)
+    return b"".join(chunks)
+
+
+def _response_headers(headers: dict[str, str]) -> dict[str, str]:
+    return {
+        key: value
+        for key, value in headers.items()
+        if key.lower() not in _FORBIDDEN_RESPONSE_HEADERS
+    }

lnbits/core/wasm_ext/client/http.py

@@ -0,0 +1,183 @@
+from __future__ import annotations
+
+import ipaddress
+import socket
+from typing import Any
+from urllib.parse import urlparse
+
+import httpx
+
+from ..api.models import HttpRequest, HttpResponse
+
+HTTP_REQUEST_TIMEOUT_SECONDS = 10.0
+HTTP_MAX_RESPONSE_BYTES = 262_144
+
+_FORBIDDEN_REQUEST_HEADERS = {
+    "connection",
+    "content-length",
+    "cookie",
+    "host",
+    "proxy-authorization",
+    "transfer-encoding",
+}
+_FORBIDDEN_RESPONSE_HEADERS = {
+    "connection",
+    "content-length",
+    "set-cookie",
+    "transfer-encoding",
+}
+
+
+async def send_extension_http_request(
+    extension_id: str,
+    policies: list[Any],
+    request: HttpRequest,
+) -> HttpResponse:
+    allowed_origins = _allowed_origins(policies)
+    origin = _request_origin(request.url)
+    if origin not in allowed_origins:
+        raise PermissionError(
+            f"Extension '{extension_id}' is not allowed to request '{origin}'."
+        )
+
+    await _reject_internal_host(request.url)
+    headers = _request_headers(request.headers)
+    body = request.body.encode() if request.body is not None else b""
+    if len(body) > 65_536:
+        raise ValueError("HTTP request body is too large.")
+
+    try:
+        async with httpx.AsyncClient(
+            follow_redirects=False,
+            timeout=HTTP_REQUEST_TIMEOUT_SECONDS,
+            trust_env=False,
+        ) as client:
+            async with client.stream(
+                request.method,
+                request.url,
+                headers=headers,
+                content=body,
+            ) as response:
+                response_body = await _read_limited_response(response)
+                return HttpResponse(
+                    status_code=response.status_code,
+                    headers=_response_headers(dict(response.headers)),
+                    body=response_body.decode(response.encoding or "utf-8", "replace"),
+                )
+    except httpx.RequestError as exc:
+        raise ValueError("HTTP request failed.") from exc
+
+
+def _allowed_origins(policies: list[Any]) -> set[str]:
+    if not isinstance(policies, list) or not policies:
+        raise PermissionError("HTTP requests require a non-empty hosts policy.")
+
+    origins: set[str] = set()
+    for policy in policies:
+        host = policy.get("host") if isinstance(policy, dict) else policy
+        if not isinstance(host, str) or not host:
+            continue
+        origins.add(_request_origin(host))
+    if not origins:
+        raise PermissionError("HTTP requests require at least one valid host.")
+    return origins
+
+
+def _request_origin(url: str) -> str:
+    parsed = urlparse(url)
+    if parsed.scheme != "https":
+        raise PermissionError("HTTP requests require https URLs.")
+    if parsed.username or parsed.password:
+        raise PermissionError("HTTP requests cannot include credentials in URLs.")
+    if not parsed.hostname:
+        raise PermissionError("HTTP requests require a hostname.")
+
+    hostname = parsed.hostname.lower()
+    port = _url_port(parsed)
+    if port is None or port == 443:
+        return f"https://{hostname}"
+    return f"https://{hostname}:{port}"
+
+
+def _url_port(parsed: Any) -> int | None:
+    try:
+        return parsed.port
+    except ValueError as exc:
+        raise PermissionError("HTTP request URL has an invalid port.") from exc
+
+
+async def _reject_internal_host(url: str) -> None:
+    parsed = urlparse(url)
+    hostname = parsed.hostname
+    if not hostname:
+        raise PermissionError("HTTP requests require a hostname.")
+    if hostname == "localhost" or hostname.endswith(".localhost"):
+        raise PermissionError("HTTP requests cannot target localhost.")
+
+    try:
+        address = ipaddress.ip_address(hostname)
+        _reject_internal_address(address)
+        return
+    except ValueError:
+        pass
+
+    for address in await _resolve_host(hostname):
+        _reject_internal_address(address)
+
+
+async def _resolve_host(
+    hostname: str,
+) -> list[ipaddress.IPv4Address | ipaddress.IPv6Address]:
+    import asyncio
+
+    def resolve() -> list[ipaddress.IPv4Address | ipaddress.IPv6Address]:
+        try:
+            infos = socket.getaddrinfo(hostname, None, type=socket.SOCK_STREAM)
+        except socket.gaierror as exc:
+            raise PermissionError("HTTP request host could not be resolved.") from exc
+
+        addresses: list[ipaddress.IPv4Address | ipaddress.IPv6Address] = []
+        for info in infos:
+            sockaddr = info[4]
+            addresses.append(ipaddress.ip_address(sockaddr[0]))
+        return addresses
+
+    return await asyncio.to_thread(resolve)
+
+
+def _reject_internal_address(
+    address: ipaddress.IPv4Address | ipaddress.IPv6Address,
+) -> None:
+    if not address.is_global:
+        raise PermissionError("HTTP requests cannot target internal network addresses.")
+
+
+def _request_headers(headers: dict[str, str]) -> dict[str, str]:
+    clean: dict[str, str] = {}
+    for key, value in headers.items():
+        header = key.strip()
+        if not header:
+            continue
+        if header.lower() in _FORBIDDEN_REQUEST_HEADERS:
+            continue
+        clean[header] = value
+    return clean
+
+
+async def _read_limited_response(response: httpx.Response) -> bytes:
+    chunks: list[bytes] = []
+    size = 0
+    async for chunk in response.aiter_bytes():
+        size += len(chunk)
+        if size > HTTP_MAX_RESPONSE_BYTES:
+            raise ValueError("HTTP response is too large.")
+        chunks.append(chunk)
+    return b"".join(chunks)
+
+
+def _response_headers(headers: dict[str, str]) -> dict[str, str]:
+    return {
+        key: value
+        for key, value in headers.items()
+        if key.lower() not in _FORBIDDEN_RESPONSE_HEADERS
+    }

lnbits/core/wasm_ext/routes/__init__.py

@@ -0,0 +1,3 @@
+from .register import register_wasm_extension
+
+__all__ = ["register_wasm_extension"]

lnbits/core/wasm_ext/routes/api.py

@@ -0,0 +1,168 @@
+from __future__ import annotations
+
+import json
+import re
+from typing import Annotated, Any
+
+from fastapi import Depends, FastAPI, HTTPException, Request
+
+from lnbits.core.models import Account
+from lnbits.decorators import check_access_token, check_account_exists
+
+from ..wasm.invoke import invoke_wasm_extension_export
+from ..wasm.loader import WasmExtension
+
+
+def register_wasm_extension_api_routes(app: FastAPI, extension: WasmExtension) -> None:
+    for route_config in extension.config.get("api_routes") or []:
+        _add_wasm_extension_api_route(app, extension, route_config)
+
+
+def _add_wasm_extension_api_route(
+    app: FastAPI,
+    extension: WasmExtension,
+    route_config: dict[str, Any],
+) -> None:
+    method = _wasm_extension_api_method(extension, route_config.get("method"))
+    route_path = _wasm_extension_api_path(extension, route_config.get("path"))
+    export_name = _wasm_extension_api_export(extension, route_config.get("export"))
+    path_params = route_config.get("path_params") or {}
+    auth = _wasm_extension_route_auth(extension, route_config.get("auth"))
+
+    if _has_route(app, route_path, method):
+        return
+
+    async def invoke_wasm_api_request(
+        request: Request,
+        account: Account | None = None,
+        access_token: str | None = None,
+    ) -> dict[str, Any]:
+        try:
+            payload = await _read_api_payload(request, path_params)
+            return await invoke_wasm_extension_export(
+                extension.id,
+                export_name,
+                payload,
+                user=account,
+                access_token=access_token,
+            )
+        except KeyError as exc:
+            raise HTTPException(status_code=404, detail=str(exc)) from exc
+        except PermissionError as exc:
+            raise HTTPException(status_code=403, detail=str(exc)) from exc
+        except (TypeError, ValueError) as exc:
+            raise HTTPException(status_code=400, detail=str(exc)) from exc
+
+    async def invoke_private_wasm_extension_export(
+        request: Request,
+        access_token: Annotated[str | None, Depends(check_access_token)],
+        account: Account = Depends(check_account_exists),
+    ) -> dict[str, Any]:
+        return await invoke_wasm_api_request(request, account, access_token)
+
+    async def invoke_public_wasm_extension_export(request: Request) -> dict[str, Any]:
+        return await invoke_wasm_api_request(request)
+
+    app.add_api_route(
+        route_path,
+        (
+            invoke_public_wasm_extension_export
+            if auth == "public"
+            else invoke_private_wasm_extension_export
+        ),
+        methods=[method],
+        name=f"{extension.id}:{method}:{route_path}",
+        include_in_schema=False,
+    )
+
+
+async def _read_api_payload(
+    request: Request,
+    path_params: dict[str, str],
+) -> dict[str, Any]:
+    payload = _read_api_path_params(request, path_params)
+    payload.update(_read_api_query_params(request))
+    if request.method in {"POST", "PUT", "PATCH"}:
+        payload.update(await _read_json_object(request))
+    return payload
+
+
+async def _read_json_object(request: Request) -> dict[str, Any]:
+    body = await request.body()
+    if not body:
+        return {}
+    value = json.loads(body)
+    if not isinstance(value, dict):
+        raise TypeError("WASM extension API payload must be a JSON object.")
+    return value
+
+
+def _read_api_path_params(
+    request: Request,
+    path_params: dict[str, str],
+) -> dict[str, Any]:
+    payload: dict[str, Any] = {}
+    for key, value in request.path_params.items():
+        target = path_params.get(key) or _snake_to_camel(key)
+        payload[target] = value
+    return payload
+
+
+def _read_api_query_params(request: Request) -> dict[str, Any]:
+    return {_snake_to_camel(key): value for key, value in request.query_params.items()}
+
+
+def _wasm_extension_api_export(extension: WasmExtension, export_name: Any) -> str:
+    if not isinstance(export_name, str) or not export_name:
+        raise ValueError(f"Invalid API export for WASM extension '{extension.id}'.")
+
+    for export in extension.exports:
+        if export.get("name") != export_name:
+            continue
+        if export.get("visibility") in {"public", "authenticated"}:
+            return export_name
+        raise PermissionError(f"WASM export '{export_name}' is not callable over HTTP.")
+    raise KeyError(f"WASM extension '{extension.id}' has no export '{export_name}'.")
+
+
+def _wasm_extension_api_method(extension: WasmExtension, method: Any) -> str:
+    if not isinstance(method, str):
+        raise ValueError(f"Invalid API method for WASM extension '{extension.id}'.")
+    method = method.upper()
+    if method not in {"GET", "POST", "PUT", "PATCH", "DELETE"}:
+        raise ValueError(f"Unsupported API method for WASM extension '{extension.id}'.")
+    return method
+
+
+def _wasm_extension_api_path(extension: WasmExtension, path: Any) -> str:
+    if not isinstance(path, str) or not path.startswith("/"):
+        raise ValueError(f"Invalid API path for WASM extension '{extension.id}'.")
+    if path == "/":
+        return f"/api/v1/ext/{extension.id}"
+    return f"/api/v1/ext/{extension.id}{path}"
+
+
+def _wasm_extension_route_auth(extension: WasmExtension, auth: Any) -> str:
+    if auth in {"public", "user"}:
+        return auth
+    raise ValueError(f"Invalid route auth for WASM extension '{extension.id}'.")
+
+
+def _has_route(app: FastAPI, route_path: str, method: str) -> bool:
+    for route in app.routes:
+        if getattr(route, "path", None) != route_path:
+            continue
+        methods = getattr(route, "methods", set()) or set()
+        if method in methods:
+            return True
+    return False
+
+
+def _snake_to_camel(value: str) -> str:
+    head, *tail = value.split("_")
+    return head + "".join(part.capitalize() for part in tail)
+
+
+def _path_template_pattern(path: str) -> str:
+    pattern = re.sub(r"\\{[^/{}]+\\}", r"[^/]+", re.escape(path))
+    return f"^{pattern}$"

lnbits/core/wasm_ext/routes/assets.py

@@ -0,0 +1,139 @@
+from __future__ import annotations
+
+import os
+from pathlib import Path
+
+from fastapi import FastAPI, HTTPException
+from fastapi.responses import FileResponse, Response
+from fastapi.staticfiles import StaticFiles
+from starlette.staticfiles import PathLike as StaticFilesPathLike
+from starlette.types import Scope
+
+from lnbits.settings import settings
+
+from ..wasm.loader import WasmExtension
+
+WASM_EXTENSION_CORE_ASSET_PREFIX = "_lnbits"
+WASM_EXTENSION_CORE_STATIC_ASSETS = {
+    "bundle.min.css": ("static/bundle.min.css", "text/css; charset=utf-8"),
+    "material-icons-v50.woff2": (
+        "static/fonts/material-icons-v50.woff2",
+        "font/woff2",
+    ),
+    "quasar.css": ("static/vendor/quasar.css", "text/css; charset=utf-8"),
+    "quasar.umd.prod.js": (
+        "static/vendor/quasar.umd.prod.js",
+        "text/javascript; charset=utf-8",
+    ),
+    "qrcode.vue.browser.js": (
+        "static/vendor/qrcode.vue.browser.js",
+        "text/javascript; charset=utf-8",
+    ),
+    "vue.global.prod.js": (
+        "static/vendor/vue.global.prod.js",
+        "text/javascript; charset=utf-8",
+    ),
+}
+WASM_EXTENSION_GENERATED_CORE_ASSETS = {
+    "material-icons.css": (
+        """
+        @font-face {
+          font-family: 'Material Icons';
+          font-style: normal;
+          font-weight: 400;
+          src: url('./material-icons-v50.woff2') format('woff2');
+        }
+        """,
+        "text/css; charset=utf-8",
+    )
+}
+WASM_EXTENSION_STATIC_MIME_TYPES = {
+    ".css": "text/css; charset=utf-8",
+    ".gif": "image/gif",
+    ".ico": "image/x-icon",
+    ".jpeg": "image/jpeg",
+    ".jpg": "image/jpeg",
+    ".js": "text/javascript; charset=utf-8",
+    ".png": "image/png",
+    ".webp": "image/webp",
+    ".woff": "font/woff",
+    ".woff2": "font/woff2",
+}
+WASM_EXTENSION_TEXT_STATIC_EXTENSIONS = {".css", ".js"}
+WASM_EXTENSION_HTML_PREFIXES = (b"<!doctype", b"<html", b"<script")
+
+
+class GuardedWasmExtensionStaticFiles(StaticFiles):
+    async def get_response(self, path: str, scope: Scope) -> Response:
+        if path.startswith(f"{WASM_EXTENSION_CORE_ASSET_PREFIX}/"):
+            return _wasm_extension_core_asset_response(path)
+        if Path(path).suffix.lower() not in WASM_EXTENSION_STATIC_MIME_TYPES:
+            raise HTTPException(status_code=404)
+        return await super().get_response(path, scope)
+
+    def file_response(
+        self,
+        full_path: StaticFilesPathLike,
+        stat_result: os.stat_result,
+        scope: Scope,
+        status_code: int = 200,
+    ) -> Response:
+        suffix = Path(full_path).suffix.lower()
+        if suffix in WASM_EXTENSION_TEXT_STATIC_EXTENSIONS:
+            _reject_html_like_wasm_static_asset(Path(full_path))
+
+        response = super().file_response(full_path, stat_result, scope, status_code)
+        response.headers["Content-Type"] = WASM_EXTENSION_STATIC_MIME_TYPES[suffix]
+        response.headers["X-Content-Type-Options"] = "nosniff"
+        response.headers["Cache-Control"] = "no-store"
+        return response
+
+
+def mount_wasm_extension_static(app: FastAPI, extension: WasmExtension) -> None:
+    static_path = extension.root_path / "static"
+
+    mount_path = f"/ext-assets/{extension.id}"
+    if any(getattr(route, "path", None) == mount_path for route in app.routes):
+        return
+
+    app.mount(
+        mount_path,
+        GuardedWasmExtensionStaticFiles(directory=static_path, check_dir=False),
+        name=f"{extension.id}-static",
+    )
+
+
+def _reject_html_like_wasm_static_asset(path: Path) -> None:
+    with path.open("rb") as asset_file:
+        prefix = asset_file.read(512).lstrip().lower()
+    if prefix.startswith(WASM_EXTENSION_HTML_PREFIXES):
+        raise HTTPException(status_code=404)
+
+
+def _wasm_extension_core_asset_response(path: str) -> Response:
+    asset_name = path.removeprefix(f"{WASM_EXTENSION_CORE_ASSET_PREFIX}/")
+    if not asset_name or "/" in asset_name or "\\" in asset_name:
+        raise HTTPException(status_code=404)
+
+    generated_asset = WASM_EXTENSION_GENERATED_CORE_ASSETS.get(asset_name)
+    if generated_asset:
+        content, content_type = generated_asset
+        response = Response(content=content, media_type=content_type)
+        response.headers["X-Content-Type-Options"] = "nosniff"
+        response.headers["Cache-Control"] = "no-store"
+        return response
+
+    asset_config = WASM_EXTENSION_CORE_STATIC_ASSETS.get(asset_name)
+    if not asset_config:
+        raise HTTPException(status_code=404)
+
+    relative_path, content_type = asset_config
+    asset_path = Path(settings.lnbits_path, relative_path)
+    if not asset_path.is_file():
+        raise HTTPException(status_code=404)
+
+    response = FileResponse(asset_path)
+    response.headers["Content-Type"] = content_type
+    response.headers["X-Content-Type-Options"] = "nosniff"
+    response.headers["Cache-Control"] = "no-store"
+    return response

lnbits/core/wasm_ext/routes/register.py

@@ -0,0 +1,31 @@
+from __future__ import annotations
+
+from fastapi import FastAPI
+from loguru import logger
+
+from lnbits.core.db import core_app_extra
+from lnbits.settings import settings
+
+from ..wasm.component import warm_wasm_extension
+from ..wasm.loader import WasmExtension, load_wasm_extension
+from .api import register_wasm_extension_api_routes
+from .assets import mount_wasm_extension_static
+from .ui import register_wasm_extension_ui_routes
+
+
+def register_wasm_extension(app: FastAPI, ext_id: str) -> WasmExtension:
+    loaded = load_wasm_extension(ext_id)
+
+    warm_wasm_extension(loaded)
+    mount_wasm_extension_static(app, loaded)
+    register_wasm_extension_ui_routes(app, loaded)
+    register_wasm_extension_api_routes(app, loaded)
+
+    core_app_extra.wasm_extension_registry.register(loaded)
+
+    settings.activate_extension_paths(ext_id, "", [])
+    logger.info(
+        f"Loaded WASM extension '{loaded.id}' "
+        f"({loaded.module_path.stat().st_size} bytes)."
+    )
+    return loaded

lnbits/core/wasm_ext/routes/security.py

@@ -0,0 +1,127 @@
+from __future__ import annotations
+
+from typing import Any, NoReturn
+from uuid import uuid4
+
+from fastapi import HTTPException, Request
+from loguru import logger
+
+from lnbits.helpers import template_renderer
+from lnbits.utils.cache import cache
+
+from ..wasm.loader import WasmExtension
+
+WASM_FRAME_TOKEN_EXPIRY_SECONDS = 60
+
+
+def wasm_extension_wrapper_response(
+    request: Request,
+    extension: WasmExtension,
+    auth: str,
+    user_json: str | None,
+) -> Any:
+    public = auth == "public"
+    response = template_renderer().TemplateResponse(
+        request,
+        "wasm_extension.html",
+        {
+            "extension": extension,
+            "public": public,
+            "user": user_json,
+        },
+    )
+    response.headers["Content-Security-Policy"] = "frame-ancestors 'self'"
+    response.headers["X-Frame-Options"] = "SAMEORIGIN"
+    return response
+
+
+def wasm_extension_frame_csp(request: Request, extension: WasmExtension) -> str:
+    origin = str(request.base_url).rstrip("/")
+    extension_assets = f"{origin}/ext-assets/{extension.id}/"
+    return (
+        "sandbox allow-scripts; "
+        "default-src 'none'; "
+        f"script-src {extension_assets}; "
+        "script-src-attr 'none'; "
+        f"style-src {extension_assets}; "
+        "style-src-attr 'none'; "
+        f"img-src {extension_assets} data:; "
+        f"font-src {extension_assets}; "
+        "connect-src 'none'; "
+        "form-action 'none'; "
+        "object-src 'none'; "
+        "base-uri 'none'; "
+        "frame-src 'none'; "
+        "worker-src 'none'; "
+        "media-src 'none'; "
+        "manifest-src 'none'; "
+        "frame-ancestors 'self'"
+    )
+
+
+def wasm_extension_frame_url(
+    extension: WasmExtension, frame_path: str, user_id: str | None
+) -> str:
+    token = _create_wasm_extension_frame_token(extension, frame_path, user_id)
+    return f"{frame_path}?frame_token={token}"
+
+
+def consume_wasm_extension_frame_token(
+    request: Request,
+    extension: WasmExtension,
+    frame_path: str,
+    user_id: str | None,
+) -> None:
+    token = request.query_params.get("frame_token")
+    if not token:
+        _raise_wasm_extension_frame_not_found(extension, frame_path, "missing")
+
+    cache_key = _wasm_extension_frame_token_cache_key(token)
+    token_data = cache.get(cache_key)
+    if (
+        not isinstance(token_data, dict)
+        or token_data.get("extension_id") != extension.id
+        or token_data.get("frame_path") != frame_path
+    ):
+        _raise_wasm_extension_frame_not_found(
+            extension, frame_path, "unknown or expired"
+        )
+
+    token_user_id = token_data.get("user_id")
+    if token_user_id and token_user_id != user_id:
+        _raise_wasm_extension_frame_not_found(extension, frame_path, "wrong user")
+
+    cache.pop(cache_key)
+
+
+def _create_wasm_extension_frame_token(
+    extension: WasmExtension,
+    frame_path: str,
+    user_id: str | None,
+) -> str:
+    token = uuid4().hex
+    cache.set(
+        _wasm_extension_frame_token_cache_key(token),
+        {
+            "extension_id": extension.id,
+            "frame_path": frame_path,
+            "user_id": user_id,
+        },
+        expiry=WASM_FRAME_TOKEN_EXPIRY_SECONDS,
+    )
+    return token
+
+
+def _wasm_extension_frame_token_cache_key(token: str) -> str:
+    return f"wasm-frame-token:{token}"
+
+
+def _raise_wasm_extension_frame_not_found(
+    extension: WasmExtension,
+    frame_path: str,
+    reason: str,
+) -> NoReturn:
+    logger.warning(
+        f"WASM frame token {reason} for extension '{extension.id}' at '{frame_path}'."
+    )
+    raise HTTPException(status_code=404, detail="Not found")

lnbits/core/wasm_ext/routes/ui.py

@@ -0,0 +1,368 @@
+from __future__ import annotations
+
+from pathlib import Path
+from typing import Annotated, Any
+
+from fastapi import Depends, FastAPI, HTTPException, Request
+from fastapi.responses import FileResponse
+from pydantic import UUID4
+
+from lnbits.core.crud import get_installed_extension, get_user_from_account
+from lnbits.core.models import Account
+from lnbits.decorators import (
+    check_access_token,
+    check_account_exists,
+    optional_user_id,
+)
+
+from ..wasm.loader import WasmExtension
+from .api import (
+    _has_route,
+    _path_template_pattern,
+    _read_json_object,
+    _snake_to_camel,
+    _wasm_extension_api_export,
+    _wasm_extension_api_method,
+    _wasm_extension_api_path,
+    _wasm_extension_route_auth,
+)
+from .security import (
+    consume_wasm_extension_frame_token,
+    wasm_extension_frame_csp,
+    wasm_extension_frame_url,
+    wasm_extension_wrapper_response,
+)
+
+
+def register_wasm_extension_ui_routes(app: FastAPI, extension: WasmExtension) -> None:
+    _add_wasm_extension_frame_config_route(app, extension)
+
+    for route_index, route_config in enumerate(extension.config.get("ui_routes") or []):
+        route_path = _wasm_extension_ui_route_path(extension, route_config.get("path"))
+        entrypoint = _wasm_extension_entrypoint(
+            extension, route_config.get("entrypoint")
+        )
+        frame_path = f"/ext-frame/{extension.id}/{route_index}"
+        auth = _wasm_extension_route_auth(extension, route_config.get("auth"))
+        _add_wasm_extension_frame_route(app, extension, frame_path, entrypoint)
+        _add_wasm_extension_wrapper_route(
+            app,
+            extension,
+            route_path,
+            auth,
+        )
+
+
+def _add_wasm_extension_frame_config_route(
+    app: FastAPI,
+    extension: WasmExtension,
+) -> None:
+    route_path = _wasm_extension_frame_config_path(extension)
+    if _has_route(app, route_path, "POST"):
+        return
+
+    async def create_wasm_extension_frame_config(
+        request: Request,
+        access_token: Annotated[str | None, Depends(check_access_token)],
+        usr: UUID4 | None = None,
+    ) -> dict[str, Any]:
+        try:
+            body = await _read_json_object(request)
+        except (TypeError, ValueError) as exc:
+            raise HTTPException(status_code=400, detail=str(exc)) from exc
+
+        ui_route = _match_wasm_extension_ui_route(extension, body.get("path"))
+        auth = ui_route["auth"]
+
+        if auth == "user":
+            account = await check_account_exists(request, access_token, usr)
+            user_id: str | None = account.id
+        else:
+            user_id = await _optional_wasm_user_id(request, access_token, usr)
+
+        granted_permission_ids = await _wasm_extension_granted_permission_ids(extension)
+
+        return _wasm_extension_frame_config(
+            extension,
+            ui_route["frame_path"],
+            auth,
+            ui_route["path_params"],
+            ui_route["route_params"],
+            _read_wasm_extension_route_query(body.get("query")),
+            user_id,
+            granted_permission_ids,
+        )
+
+    app.add_api_route(
+        route_path,
+        create_wasm_extension_frame_config,
+        methods=["POST"],
+        name=f"{extension.id}:frame-config",
+        include_in_schema=False,
+    )
+
+
+def _add_wasm_extension_wrapper_route(
+    app: FastAPI,
+    extension: WasmExtension,
+    route_path: str,
+    auth: str,
+) -> None:
+    if _has_route(app, route_path, "GET"):
+        return
+
+    async def serve_private_wasm_extension_page(
+        request: Request,
+        account: Account = Depends(check_account_exists),
+    ) -> Any:
+        user = await get_user_from_account(account)
+        return wasm_extension_wrapper_response(
+            request,
+            extension,
+            auth,
+            user.json() if user else None,
+        )
+
+    async def serve_public_wasm_extension_page(request: Request) -> Any:
+        return wasm_extension_wrapper_response(
+            request,
+            extension,
+            auth,
+            None,
+        )
+
+    app.add_api_route(
+        route_path,
+        (
+            serve_public_wasm_extension_page
+            if auth == "public"
+            else serve_private_wasm_extension_page
+        ),
+        methods=["GET"],
+        name=f"{extension.id}:{route_path}",
+        include_in_schema=False,
+    )
+
+
+def _add_wasm_extension_frame_route(
+    app: FastAPI,
+    extension: WasmExtension,
+    frame_path: str,
+    entrypoint: Path,
+) -> None:
+    if _has_route(app, frame_path, "GET"):
+        return
+
+    async def serve_wasm_extension_frame(
+        request: Request,
+        user_id: str | None = Depends(_optional_wasm_user_id),
+    ) -> FileResponse:
+        consume_wasm_extension_frame_token(request, extension, frame_path, user_id)
+        response = FileResponse(entrypoint)
+        response.headers["Content-Security-Policy"] = wasm_extension_frame_csp(
+            request, extension
+        )
+        response.headers["Cache-Control"] = "no-store"
+        response.headers["Cross-Origin-Opener-Policy"] = "same-origin"
+        response.headers["Cross-Origin-Resource-Policy"] = "same-origin"
+        # Extension access goes through the parent bridge.
+        response.headers["Permissions-Policy"] = (
+            "camera=(), microphone=(), geolocation=(), payment=(), "
+            "clipboard-read=(), usb=()"
+        )
+        response.headers["Referrer-Policy"] = "no-referrer"
+        response.headers["X-Content-Type-Options"] = "nosniff"
+        return response
+
+    app.add_api_route(
+        frame_path,
+        serve_wasm_extension_frame,
+        methods=["GET"],
+        name=f"{extension.id}:frame:{frame_path}",
+        include_in_schema=False,
+    )
+
+
+def _wasm_extension_bridge_api_routes(
+    extension: WasmExtension,
+    public: bool,
+) -> list[dict[str, str]]:
+    routes: list[dict[str, str]] = []
+    for route_config in extension.config.get("api_routes") or []:
+        auth = _wasm_extension_route_auth(extension, route_config.get("auth"))
+        if public and auth != "public":
+            continue
+        method = _wasm_extension_api_method(extension, route_config.get("method"))
+        path = _wasm_extension_api_path(extension, route_config.get("path"))
+        _wasm_extension_api_export(extension, route_config.get("export"))
+        routes.append(
+            {
+                "method": method,
+                "path": path,
+                "pattern": _path_template_pattern(path),
+            }
+        )
+    return routes
+
+
+def _wasm_extension_frame_config_path(extension: WasmExtension) -> str:
+    return f"/api/v1/ext/{extension.id}/_ui/frame"
+
+
+def _match_wasm_extension_ui_route(
+    extension: WasmExtension,
+    path: Any,
+) -> dict[str, Any]:
+    if not isinstance(path, str) or not path.startswith("/"):
+        raise HTTPException(status_code=404, detail="Not found")
+
+    for route_index, route_config in enumerate(extension.config.get("ui_routes") or []):
+        route_path = _wasm_extension_ui_route_path(extension, route_config.get("path"))
+        route_params = _path_template_params(route_path, path)
+        if route_params is None:
+            continue
+
+        return {
+            "frame_path": f"/ext-frame/{extension.id}/{route_index}",
+            "auth": _wasm_extension_route_auth(extension, route_config.get("auth")),
+            "path_params": route_config.get("path_params") or {},
+            "route_params": route_params,
+        }
+
+    raise HTTPException(status_code=404, detail="Not found")
+
+
+def _path_template_params(template: str, path: str) -> dict[str, str] | None:
+    template_parts = _path_parts(template)
+    path_parts = _path_parts(path)
+    if len(template_parts) != len(path_parts):
+        return None
+
+    params: dict[str, str] = {}
+    for template_part, path_part in zip(template_parts, path_parts, strict=False):
+        if template_part.startswith("{") and template_part.endswith("}"):
+            param_name = template_part[1:-1]
+            if not param_name:
+                return None
+            params[param_name] = path_part
+            continue
+
+        if template_part != path_part:
+            return None
+
+    return params
+
+
+def _path_parts(path: str) -> list[str]:
+    return [part for part in path.strip("/").split("/") if part]
+
+
+def _wasm_extension_frame_config(
+    extension: WasmExtension,
+    frame_path: str,
+    auth: str,
+    path_params: dict[str, str],
+    route_params: dict[str, str],
+    query: dict[str, Any],
+    user_id: str | None,
+    permissions: set[str],
+) -> dict[str, Any]:
+    public = auth == "public"
+    return {
+        "extension": {
+            "id": extension.id,
+            "name": extension.name,
+        },
+        "frameUrl": wasm_extension_frame_url(extension, frame_path, user_id),
+        "bridge": {
+            "extensionId": extension.id,
+            "public": public,
+            "routeParams": _map_wasm_extension_route_params(route_params, path_params),
+            "query": query,
+            "permissions": sorted(permissions),
+            "apiRoutes": _wasm_extension_bridge_api_routes(extension, public),
+        },
+    }
+
+
+async def _wasm_extension_granted_permission_ids(
+    extension: WasmExtension,
+) -> set[str]:
+    installed_extension = await get_installed_extension(extension.id)
+    if not installed_extension:
+        return set()
+    return {permission.id for permission in installed_extension.permissions}
+
+
+def _map_wasm_extension_route_params(
+    route_params: dict[str, str],
+    path_params: dict[str, str],
+) -> dict[str, str]:
+    payload: dict[str, str] = {}
+    for key, value in route_params.items():
+        target = path_params.get(key) or _snake_to_camel(key)
+        payload[target] = value
+    return payload
+
+
+def _read_wasm_extension_route_query(query: Any) -> dict[str, Any]:
+    if not isinstance(query, dict):
+        return {}
+
+    payload: dict[str, Any] = {}
+    for key, value in query.items():
+        if value is None:
+            continue
+        payload[_snake_to_camel(str(key))] = value
+    return payload
+
+
+async def _optional_wasm_user_id(
+    request: Request,
+    access_token: Annotated[str | None, Depends(check_access_token)],
+    usr: UUID4 | None = None,
+) -> str | None:
+    try:
+        return await optional_user_id(request, access_token, usr)
+    except HTTPException:
+        return None
+
+
+def _wasm_extension_ui_route_path(extension: WasmExtension, path: Any) -> str:
+    if not isinstance(path, str) or not path.startswith("/"):
+        raise ValueError(f"Invalid route path for WASM extension '{extension.id}'.")
+    if path == "/":
+        return "/ext"
+    return f"/ext{path}"
+
+
+def _wasm_extension_entrypoint(extension: WasmExtension, entrypoint: Any) -> Path:
+    if not isinstance(entrypoint, str) or not entrypoint:
+        raise ValueError(
+            f"Invalid route entrypoint for WASM extension '{extension.id}'."
+        )
+    if entrypoint.startswith("/"):
+        raise ValueError(
+            f"Route entrypoint for WASM extension '{extension.id}' must be a "
+            "relative extension path."
+        )
+
+    path = (extension.root_path / entrypoint).resolve()
+    root_path = extension.root_path.resolve()
+    if path != root_path and root_path not in path.parents:
+        raise ValueError(f"Route entrypoint escapes extension root: {entrypoint}")
+
+    static_path = (extension.root_path / "static").resolve()
+    if path == static_path or static_path in path.parents:
+        raise ValueError(
+            f"Route entrypoint for WASM extension '{extension.id}' must not be "
+            "inside the static asset directory."
+        )
+    if path.suffix.lower() != ".html":
+        raise ValueError(
+            f"Route entrypoint for WASM extension '{extension.id}' must be "
+            "an HTML file."
+        )
+    if not path.is_file():
+        raise FileNotFoundError(f"Route entrypoint not found: {path}")
+    return path

lnbits/core/wasm_ext/storage/__init__.py

@@ -0,0 +1,19 @@
+from .crud import (
+    migrate_wasm_extension_database,
+    storage_delete_row,
+    storage_get_paginated_rows,
+    storage_get_public_row,
+    storage_get_row,
+    storage_get_row_owner_id,
+    storage_set_row,
+)
+
+__all__ = [
+    "migrate_wasm_extension_database",
+    "storage_delete_row",
+    "storage_get_paginated_rows",
+    "storage_get_public_row",
+    "storage_get_row",
+    "storage_get_row_owner_id",
+    "storage_set_row",
+]

lnbits/core/wasm_ext/storage/crud.py

@@ -0,0 +1,627 @@
+from __future__ import annotations
+
+import json
+import re
+from datetime import datetime, timezone
+from pathlib import Path
+from typing import Any
+
+from loguru import logger
+
+from lnbits.core.crud import update_migration_version
+from lnbits.core.db import db as core_db
+from lnbits.core.models import DbVersion
+from lnbits.core.models.extensions import InstallableExtension
+from lnbits.db import POSTGRES, SQLITE, Connection, Database
+from lnbits.settings import settings
+
+_MIGRATION_FILE_RE = re.compile(r"^(\d+)_.*\.json$")
+_SQL_IDENTIFIER_RE = re.compile(r"^[A-Za-z_][A-Za-z0-9_]*$")
+OWNER_ID_FIELD = "__lnbits_owner_id__"
+
+
+async def storage_get_row(
+    ext_id: str,
+    table: str,
+    row_id: str,
+    owner_id: str,
+) -> dict[str, Any] | None:
+    table_schema = _load_table_schema(ext_id, table)
+    query = f"""
+        SELECT * FROM {_table_ref_for_schema(ext_id, table)}
+        WHERE id = :id AND {OWNER_ID_FIELD} = :owner_id
+    """  # noqa: S608
+    async with Database(f"ext_{ext_id}").connect() as conn:
+        row = await conn.fetchone(query, {"id": row_id, "owner_id": owner_id})
+    return _row_from_db(table_schema, row) if row else None
+
+
+async def storage_get_public_row(
+    ext_id: str,
+    table: str,
+    row_id: str,
+) -> dict[str, Any] | None:
+    table_schema = _load_table_schema(ext_id, table)
+    query = f"""
+        SELECT * FROM {_table_ref_for_schema(ext_id, table)}
+        WHERE id = :id
+    """  # noqa: S608
+    async with Database(f"ext_{ext_id}").connect() as conn:
+        row = await conn.fetchone(query, {"id": row_id})
+    return _row_from_db(table_schema, row) if row else None
+
+
+async def storage_get_row_owner_id(
+    ext_id: str,
+    table: str,
+    row_id: str,
+) -> str | None:
+    _load_table_schema(ext_id, table)
+    query = f"""
+        SELECT {OWNER_ID_FIELD} FROM {_table_ref_for_schema(ext_id, table)}
+        WHERE id = :id
+    """  # noqa: S608
+    async with Database(f"ext_{ext_id}").connect() as conn:
+        row = await conn.fetchone(query, {"id": row_id})
+
+    owner_id = row[OWNER_ID_FIELD] if row else None
+    return owner_id if isinstance(owner_id, str) and owner_id else None
+
+
+async def storage_set_row(
+    ext_id: str,
+    table: str,
+    data: dict[str, Any],
+    owner_id: str,
+) -> None:
+    table_schema = _load_table_schema(ext_id, table)
+    clean_data = _data_to_db(table_schema, data, require_id=True)
+    clean_data[OWNER_ID_FIELD] = owner_id
+    columns = list(clean_data.keys())
+    placeholders = [f":{column}" for column in columns]
+    updates = [
+        f"{column} = excluded.{column}"
+        for column in columns
+        if column not in ("id", OWNER_ID_FIELD)
+    ]
+    conflict_sql = (
+        "DO UPDATE SET "
+        + ", ".join(updates)
+        + f" WHERE {OWNER_ID_FIELD} = :{OWNER_ID_FIELD}"
+        if updates
+        else "DO NOTHING"
+    )
+    query = f"""
+        INSERT INTO {_table_ref_for_schema(ext_id, table)}
+            ({", ".join(columns)})
+        VALUES
+            ({", ".join(placeholders)})
+        ON CONFLICT (id) {conflict_sql}
+    """  # noqa: S608
+
+    async with Database(f"ext_{ext_id}").connect() as conn:
+        await conn.execute(query, clean_data)
+
+
+async def storage_get_paginated_rows(
+    ext_id: str,
+    table: str,
+    filters: dict[str, Any],
+    *,
+    owner_id: str,
+    search: str | None,
+    search_fields: list[str],
+    sort_by: str | None,
+    descending: bool,
+    limit: int,
+    offset: int,
+) -> dict[str, Any]:
+    table_schema = _load_table_schema(ext_id, table)
+    where_sql, values = _where_sql(table_schema, filters, search, search_fields)
+    where_sql = _append_owner_where_sql(where_sql)
+    values[OWNER_ID_FIELD] = owner_id
+    order_sql = _order_sql(table_schema, sort_by, descending)
+    count_values = dict(values)
+    values.update({"limit": min(limit, 1000), "offset": offset})
+
+    table_ref = _table_ref_for_schema(ext_id, table)
+    rows_query = f"""
+        SELECT * FROM {table_ref}
+        {where_sql}
+        {order_sql}
+        LIMIT :limit
+        OFFSET :offset
+    """  # noqa: S608
+    count_query = f"""
+        SELECT COUNT(*) AS count FROM {table_ref}
+        {where_sql}
+    """  # noqa: S608
+
+    async with Database(f"ext_{ext_id}").connect() as conn:
+        rows = await conn.fetchall(rows_query, values)
+        count_row = await conn.fetchone(count_query, count_values)
+
+    return {
+        "data": [_row_from_db(table_schema, row) for row in rows],
+        "total": int(count_row["count"]) if count_row else 0,
+    }
+
+
+async def storage_delete_row(
+    ext_id: str,
+    table: str,
+    row_id: str,
+    owner_id: str,
+) -> None:
+    _load_table_schema(ext_id, table)
+    query = f"""
+        DELETE FROM {_table_ref_for_schema(ext_id, table)}
+        WHERE id = :id AND {OWNER_ID_FIELD} = :owner_id
+    """  # noqa: S608
+    async with Database(f"ext_{ext_id}").connect() as conn:
+        await conn.execute(query, {"id": row_id, "owner_id": owner_id})
+
+
+async def migrate_wasm_extension_database(
+    ext: InstallableExtension,
+    current_version: DbVersion | None = None,
+) -> None:
+    migrations_dir = ext.ext_dir / "storage" / "migrations"
+    migration_files = _migration_files(migrations_dir)
+    if not migration_files:
+        logger.debug(f"No storage migrations for WASM extension '{ext.id}'.")
+        return
+
+    ext_db = Database(f"ext_{ext.id}")
+    async with ext_db.connect() as conn:
+        for version, path in migration_files:
+            if current_version and version <= current_version.version:
+                continue
+            logger.debug(f"running WASM storage migration {ext.id}.{version}")
+            print(f"running migration {ext.id}.{version}")
+            await _run_storage_migration(conn, path)
+            await _update_wasm_migration_version(conn, ext.id, version)
+
+
+def _migration_files(migrations_dir: Path) -> list[tuple[int, Path]]:
+    if not migrations_dir.is_dir():
+        return []
+
+    files: list[tuple[int, Path]] = []
+    for path in migrations_dir.glob("*.json"):
+        match = _MIGRATION_FILE_RE.match(path.name)
+        if not match:
+            raise ValueError(f"Invalid WASM storage migration filename: {path.name}")
+        files.append((int(match.group(1)), path))
+    return sorted(files)
+
+
+async def _run_storage_migration(db: Connection, path: Path) -> None:
+    migration = _load_json(path)
+    operations = migration.get("operations")
+    if not isinstance(operations, list):
+        raise ValueError(f"WASM storage migration '{path}' has no operations list.")
+
+    for operation in operations:
+        if not isinstance(operation, dict):
+            raise ValueError(f"WASM storage migration '{path}' has invalid operation.")
+        sql = _operation_sql(db, operation)
+        await db.execute(sql)
+
+
+def _operation_sql(db: Connection, operation: dict[str, Any]) -> str:
+    op = operation.get("op")
+    if op == "create_table":
+        return _create_table_sql(db, operation)
+    if op == "add_field":
+        return _add_field_sql(db, operation)
+    if op == "create_index":
+        return _create_index_sql(db, operation)
+    raise ValueError(f"Unsupported WASM storage migration operation: {op}")
+
+
+def _create_table_sql(db: Connection, operation: dict[str, Any]) -> str:
+    table = _require_identifier(operation, "table")
+    fields = _require_fields(operation)
+    if not any(field.get("name") == "id" for field in fields):
+        raise ValueError(f"WASM storage table '{table}' must define an id field.")
+    if any(field.get("name") == OWNER_ID_FIELD for field in fields):
+        raise ValueError(
+            f"WASM storage table '{table}' defines reserved field '{OWNER_ID_FIELD}'."
+        )
+
+    columns = [
+        _column_sql(db, field, primary_key=field.get("name") == "id")
+        for field in fields
+    ]
+    columns.append(f"{OWNER_ID_FIELD} TEXT NOT NULL")
+    return f"""
+        CREATE TABLE IF NOT EXISTS {_table_ref(db, table)} (
+            {", ".join(columns)}
+        );
+    """
+
+
+def _add_field_sql(db: Connection, operation: dict[str, Any]) -> str:
+    table = _require_identifier(operation, "table")
+    field = _field_from_add_field_operation(operation)
+    if field["name"] == OWNER_ID_FIELD:
+        raise ValueError(
+            f"WASM storage table '{table}' cannot add reserved field "
+            f"'{OWNER_ID_FIELD}'."
+        )
+    return f"""
+        ALTER TABLE {_table_ref(db, table)}
+        ADD COLUMN {_column_sql(db, field)};
+    """
+
+
+def _create_index_sql(db: Connection, operation: dict[str, Any]) -> str:
+    table = _require_identifier(operation, "table")
+    name = _require_identifier(operation, "name")
+    field = _require_identifier(operation, "field")
+    if field == OWNER_ID_FIELD:
+        raise ValueError(
+            f"WASM storage table '{table}' cannot index reserved field "
+            f"'{OWNER_ID_FIELD}'."
+        )
+
+    if db.type == SQLITE and db.schema:
+        return f"""
+            CREATE INDEX IF NOT EXISTS {_schema_ref(db, name)}
+            ON {table} ({field});
+        """
+
+    return f"""
+        CREATE INDEX IF NOT EXISTS {name}
+        ON {_table_ref(db, table)} ({field});
+    """
+
+
+def _column_sql(
+    db: Connection,
+    field: dict[str, Any],
+    *,
+    primary_key: bool = False,
+) -> str:
+    name = _require_identifier(field, "name")
+    column_type = _field_type_sql(db, field)
+    parts = [name, column_type]
+
+    if primary_key:
+        parts.append("PRIMARY KEY")
+    elif not field.get("nullable", False):
+        parts.append("NOT NULL")
+
+    if "default" in field:
+        parts.append(f"DEFAULT {_default_sql(field['default'])}")
+
+    return " ".join(parts)
+
+
+def _field_type_sql(db: Connection, field: dict[str, Any]) -> str:
+    if field.get("list") is True:
+        return "TEXT"
+
+    field_type = field.get("type")
+    if field_type == "string":
+        return "TEXT"
+    if field_type == "integer":
+        return db.big_int
+    if field_type == "number":
+        return "DOUBLE PRECISION" if db.type == POSTGRES else "REAL"
+    if field_type == "boolean":
+        return "BOOLEAN"
+    if field_type == "datetime":
+        return "TIMESTAMP"
+    raise ValueError(f"Unsupported WASM storage field type: {field_type}")
+
+
+def _load_table_schema(ext_id: str, table: str) -> dict[str, Any]:
+    schema = _load_storage_schema(ext_id)
+    tables = schema.get("tables")
+    if not isinstance(tables, dict):
+        raise ValueError(f"WASM extension '{ext_id}' has no storage tables schema.")
+
+    _require_identifier({"table": table}, "table")
+    table_schema = tables.get(table)
+    if not isinstance(table_schema, dict):
+        raise ValueError(f"WASM extension '{ext_id}' has no storage table '{table}'.")
+
+    fields = table_schema.get("fields")
+    if not isinstance(fields, list) or not fields:
+        raise ValueError(f"WASM storage table '{table}' has no fields schema.")
+
+    for field in fields:
+        if not isinstance(field, dict):
+            raise ValueError(f"WASM storage table '{table}' has invalid field schema.")
+        _require_identifier(field, "name")
+        if field["name"] == OWNER_ID_FIELD:
+            raise ValueError(
+                f"WASM storage table '{table}' defines reserved field "
+                f"'{OWNER_ID_FIELD}'."
+            )
+    return table_schema
+
+
+def _load_storage_schema(ext_id: str) -> dict[str, Any]:
+    schema_path = (
+        Path(settings.lnbits_extensions_path)
+        / "extensions"
+        / ext_id
+        / "storage"
+        / "schema.json"
+    )
+    if not schema_path.is_file():
+        raise ValueError(f"WASM extension '{ext_id}' has no storage schema.")
+    return _load_json(schema_path)
+
+
+def _data_to_db(
+    table_schema: dict[str, Any],
+    data: dict[str, Any],
+    *,
+    require_id: bool,
+) -> dict[str, Any]:
+    if not isinstance(data, dict):
+        raise ValueError("WASM storage row data must be an object.")
+    if require_id and not data.get("id"):
+        raise ValueError("WASM storage row data must include an id.")
+    _reject_reserved_owner_field(data, "row")
+
+    fields = _fields_by_name(table_schema)
+    unknown_fields = sorted(set(data) - set(fields))
+    if unknown_fields:
+        raise ValueError(
+            "WASM storage row has unknown fields: " + ", ".join(unknown_fields)
+        )
+
+    return {
+        field_name: _value_to_db(fields[field_name], value)
+        for field_name, value in data.items()
+    }
+
+
+def _filters_to_db(
+    table_schema: dict[str, Any],
+    filters: dict[str, Any],
+) -> dict[str, Any]:
+    if not isinstance(filters, dict):
+        raise ValueError("WASM storage filters must be an object.")
+    _reject_reserved_owner_field(filters, "filters")
+
+    fields = _fields_by_name(table_schema)
+    unknown_fields = sorted(set(filters) - set(fields))
+    if unknown_fields:
+        raise ValueError(
+            "WASM storage filters have unknown fields: " + ", ".join(unknown_fields)
+        )
+
+    return {
+        field_name: _value_to_db(fields[field_name], value)
+        for field_name, value in filters.items()
+    }
+
+
+def _where_sql(
+    table_schema: dict[str, Any],
+    filters: dict[str, Any],
+    search: str | None,
+    search_fields: list[str],
+) -> tuple[str, dict[str, Any]]:
+    clean_filters = _filters_to_db(table_schema, filters)
+    clauses = [f"{field} = :filter_{field}" for field in clean_filters]
+    values = {f"filter_{field}": value for field, value in clean_filters.items()}
+
+    clean_search = search.strip().lower() if search else ""
+    if clean_search:
+        fields = _fields_by_name(table_schema)
+        invalid_fields = sorted(set(search_fields) - set(fields))
+        if invalid_fields:
+            raise ValueError(
+                "WASM storage search has unknown fields: " + ", ".join(invalid_fields)
+            )
+        if search_fields:
+            search_clause = " OR ".join(
+                f"LOWER(CAST({field} AS TEXT)) LIKE :search" for field in search_fields
+            )
+            clauses.append(f"({search_clause})")
+            values["search"] = f"%{clean_search}%"
+
+    return ("WHERE " + " AND ".join(clauses), values) if clauses else ("", values)
+
+
+def _append_owner_where_sql(where_sql: str) -> str:
+    owner_clause = f"{OWNER_ID_FIELD} = :{OWNER_ID_FIELD}"
+    if where_sql:
+        return f"{where_sql} AND {owner_clause}"
+    return f"WHERE {owner_clause}"
+
+
+def _order_sql(
+    table_schema: dict[str, Any],
+    sort_by: str | None,
+    descending: bool,
+) -> str:
+    if not sort_by:
+        return ""
+    fields = _fields_by_name(table_schema)
+    if sort_by not in fields:
+        raise ValueError(f"WASM storage sort field is unknown: {sort_by}")
+    direction = "DESC" if descending else "ASC"
+    return f"ORDER BY {sort_by} {direction}"
+
+
+def _row_from_db(
+    table_schema: dict[str, Any],
+    row: dict[str, Any],
+) -> dict[str, Any]:
+    fields = _fields_by_name(table_schema)
+    return {
+        field_name: _value_from_db(fields[field_name], value)
+        for field_name, value in dict(row).items()
+        if field_name in fields
+    }
+
+
+def _fields_by_name(table_schema: dict[str, Any]) -> dict[str, dict[str, Any]]:
+    fields = table_schema.get("fields")
+    if not isinstance(fields, list):
+        raise ValueError("WASM storage table schema fields must be a list.")
+    return {field["name"]: field for field in fields}
+
+
+def _reject_reserved_owner_field(data: dict[str, Any], value_name: str) -> None:
+    if OWNER_ID_FIELD in data:
+        raise ValueError(f"WASM storage {value_name} includes a reserved owner field.")
+
+
+def _value_to_db(field: dict[str, Any], value: Any) -> Any:  # noqa: C901
+    if value is None:
+        if field.get("nullable", False):
+            return None
+        raise ValueError(f"WASM storage field '{field['name']}' cannot be null.")
+
+    if field.get("list") is True:
+        if not isinstance(value, list):
+            raise ValueError(f"WASM storage field '{field['name']}' must be a list.")
+        return json.dumps(value)
+
+    field_type = field.get("type")
+    if field_type == "string":
+        if not isinstance(value, str):
+            raise ValueError(f"WASM storage field '{field['name']}' must be a string.")
+        return value
+    if field_type == "integer":
+        if isinstance(value, bool) or not isinstance(value, int):
+            raise ValueError(
+                f"WASM storage field '{field['name']}' must be an integer."
+            )
+        return value
+    if field_type == "number":
+        if isinstance(value, bool) or not isinstance(value, int | float):
+            raise ValueError(f"WASM storage field '{field['name']}' must be a number.")
+        return value
+    if field_type == "boolean":
+        if not isinstance(value, bool):
+            raise ValueError(f"WASM storage field '{field['name']}' must be a boolean.")
+        return value
+    if field_type == "datetime":
+        if isinstance(value, int | float):
+            return datetime.fromtimestamp(value, tz=timezone.utc)
+        if isinstance(value, datetime):
+            return value
+        raise ValueError(
+            f"WASM storage field '{field['name']}' must be a Unix timestamp."
+        )
+    raise ValueError(f"Unsupported WASM storage field type: {field_type}")
+
+
+def _value_from_db(field: dict[str, Any], value: Any) -> Any:
+    if value is None:
+        return None
+
+    if field.get("list") is True:
+        if isinstance(value, str):
+            return json.loads(value)
+        return value
+
+    field_type = field.get("type")
+    if field_type == "boolean":
+        return bool(value)
+    if field_type == "datetime":
+        if isinstance(value, datetime):
+            return int(value.replace(tzinfo=timezone.utc).timestamp())
+        if isinstance(value, int | float):
+            return int(value)
+        if isinstance(value, str):
+            try:
+                return int(datetime.fromisoformat(value).timestamp())
+            except ValueError:
+                return value
+    return value
+
+
+def _default_sql(value: Any) -> str:
+    if value is None:
+        return "NULL"
+    if isinstance(value, bool):
+        return "true" if value else "false"
+    if isinstance(value, int | float):
+        return str(value)
+    if isinstance(value, str):
+        return _quote_sql_string(value)
+    if isinstance(value, list | dict):
+        return _quote_sql_string(json.dumps(value))
+    raise ValueError(f"Unsupported WASM storage default value: {value}")
+
+
+def _field_from_add_field_operation(operation: dict[str, Any]) -> dict[str, Any]:
+    field = {
+        "name": operation.get("field"),
+        "type": operation.get("type"),
+    }
+    for key in ("default", "list", "nullable"):
+        if key in operation:
+            field[key] = operation[key]
+    return field
+
+
+def _require_fields(operation: dict[str, Any]) -> list[dict[str, Any]]:
+    fields = operation.get("fields")
+    if not isinstance(fields, list) or not fields:
+        raise ValueError("WASM storage create_table operation requires fields.")
+    if not all(isinstance(field, dict) for field in fields):
+        raise ValueError("WASM storage fields must be objects.")
+    return fields
+
+
+def _require_identifier(data: dict[str, Any], key: str) -> str:
+    value = data.get(key)
+    if not isinstance(value, str) or not _SQL_IDENTIFIER_RE.match(value):
+        raise ValueError(f"Invalid WASM storage SQL identifier for '{key}': {value}")
+    return value
+
+
+def _table_ref(db: Connection, table: str) -> str:
+    if db.schema:
+        return f"{_schema_ref(db, table)}"
+    return table
+
+
+def _table_ref_for_schema(ext_id: str, table: str) -> str:
+    _require_identifier({"schema": ext_id}, "schema")
+    _require_identifier({"table": table}, "table")
+    return f"{ext_id}.{table}"
+
+
+def _schema_ref(db: Connection, name: str) -> str:
+    if not db.schema:
+        return name
+    if not _SQL_IDENTIFIER_RE.match(db.schema):
+        raise ValueError(f"Invalid WASM extension storage schema: {db.schema}")
+    return f"{db.schema}.{name}"
+
+
+def _quote_sql_string(value: str) -> str:
+    return "'" + value.replace("'", "''") + "'"
+
+
+def _load_json(path: Path) -> dict[str, Any]:
+    with open(path, encoding="utf-8") as json_file:
+        data = json.load(json_file)
+    if not isinstance(data, dict):
+        raise ValueError(f"WASM storage migration '{path}' must be a JSON object.")
+    return data
+
+
+async def _update_wasm_migration_version(
+    db: Connection,
+    ext_id: str,
+    version: int,
+) -> None:
+    if db.schema is None:
+        await update_migration_version(db, ext_id, version)
+    else:
+        async with core_db.connect() as conn:
+            await update_migration_version(conn, ext_id, version)

lnbits/core/wasm_ext/wasm/__init__.py

@@ -0,0 +1,13 @@
+from .component import warm_wasm_extension
+from .events import dispatch_wasm_invoice_paid
+from .invoke import invoke_wasm_extension_export
+from .loader import WasmExtension, is_wasm_extension_dir, is_wasm_extension_id
+
+__all__ = [
+    "WasmExtension",
+    "dispatch_wasm_invoice_paid",
+    "invoke_wasm_extension_export",
+    "is_wasm_extension_dir",
+    "is_wasm_extension_id",
+    "warm_wasm_extension",
+]

lnbits/core/wasm_ext/wasm/component.py

@@ -0,0 +1,39 @@
+from __future__ import annotations
+
+from functools import lru_cache
+from typing import Any
+
+from wasmtime import Config, Engine
+
+from .loader import WasmExtension
+
+
+def warm_wasm_extension(extension: WasmExtension) -> None:
+    _wasm_component(extension)
+
+
+@lru_cache(maxsize=1)
+def _wasm_engine() -> Any:
+    config = Config()
+    config.wasm_component_model = True
+    return Engine(config)
+
+
+def _wasm_component(extension: WasmExtension) -> Any:
+    stat = extension.module_path.stat()
+    return _cached_wasm_component(
+        str(extension.module_path),
+        stat.st_mtime_ns,
+        stat.st_size,
+    )
+
+
+@lru_cache(maxsize=32)
+def _cached_wasm_component(
+    module_path: str,
+    mtime_ns: int,
+    size: int,
+) -> Any:
+    from wasmtime import component
+
+    return component.Component.from_file(_wasm_engine(), module_path)

lnbits/core/wasm_ext/wasm/events.py

@@ -0,0 +1,122 @@
+import json
+from typing import Any
+
+from loguru import logger
+
+from lnbits.core.db import core_app_extra
+from lnbits.core.wasm_ext.storage.crud import storage_get_row_owner_id
+from lnbits.core.wasm_ext.wasm.invoke import invoke_wasm_extension_export
+
+
+async def dispatch_wasm_invoice_paid(payment: Any) -> None:
+    extension_id = _payment_extension_id(payment)
+    if not extension_id:
+        return
+
+    extension = core_app_extra.wasm_extension_registry.get(extension_id)
+    if not extension:
+        return
+
+    export_name = _wasm_invoice_paid_export(extension.config)
+    if not export_name:
+        return
+
+    if not _is_wasm_event_export(extension, export_name):
+        logger.warning(
+            f"WASM extension '{extension.id}' declares invalid onInvoicePaid "
+            f"export '{export_name}'."
+        )
+        return
+
+    try:
+        await invoke_wasm_extension_export(
+            extension.id,
+            export_name,
+            _wasm_invoice_paid_payload(payment),
+            context="event",
+            owner_id=await _wasm_invoice_paid_owner_id(extension, payment),
+        )
+    except Exception as exc:
+        logger.warning(
+            f"WASM extension '{extension.id}' failed to handle paid invoice "
+            f"'{payment.payment_hash}': {exc!s}"
+        )
+
+
+def _payment_extension_id(payment: Any) -> str | None:
+    if isinstance(payment.extension, str) and payment.extension:
+        return payment.extension
+
+    extra = payment.extra or {}
+    tag = extra.get("tag") or payment.tag
+    return tag if isinstance(tag, str) and tag else None
+
+
+async def _wasm_invoice_paid_owner_id(extension: Any, payment: Any) -> str | None:
+    source_id = _payment_source_id(payment)
+    source_tables = _wasm_public_invoice_source_tables(extension.config)
+    if not source_id or not source_tables:
+        return None
+
+    for source_table in source_tables:
+        owner_id = await storage_get_row_owner_id(extension.id, source_table, source_id)
+        if owner_id:
+            return owner_id
+    return None
+
+
+def _payment_source_id(payment: Any) -> str | None:
+    extra = payment.extra or {}
+    source_id = extra.get("source_id")
+    return source_id if isinstance(source_id, str) and source_id else None
+
+
+def _wasm_public_invoice_source_tables(config: dict[str, Any]) -> list[str]:
+    permissions = config.get("permissions") or []
+    for permission in permissions:
+        if not isinstance(permission, dict):
+            continue
+        if permission.get("id") != "wallet.create_invoice_public":
+            continue
+        policies = permission.get("policies")
+        if not isinstance(policies, list):
+            return []
+        return [
+            source_policy["table"]
+            for source_policy in policies
+            if isinstance(source_policy, dict)
+            and isinstance(source_policy.get("table"), str)
+            and source_policy["table"]
+        ]
+    return []
+
+
+def _wasm_invoice_paid_export(config: dict[str, Any]) -> str | None:
+    events = config.get("events") or {}
+    export_name = events.get("onInvoicePaid")
+    return export_name if isinstance(export_name, str) and export_name else None
+
+
+def _is_wasm_event_export(extension: Any, export_name: str) -> bool:
+    for export in extension.exports:
+        if export.get("name") == export_name:
+            return export.get("visibility") == "event"
+    return False
+
+
+def _wasm_invoice_paid_payload(payment: Any) -> dict[str, Any]:
+    return {
+        "checkingId": payment.checking_id,
+        "paymentHash": payment.payment_hash,
+        "walletId": payment.wallet_id,
+        "amount": payment.amount,
+        "fee": payment.fee,
+        "bolt11": payment.bolt11,
+        "memo": payment.memo,
+        "pending": payment.pending,
+        "status": payment.status,
+        "tag": payment.tag,
+        "extension": payment.extension,
+        "extra": payment.extra or {},
+        "payment": json.loads(payment.json()),
+    }

lnbits/core/wasm_ext/wasm/host.py

@@ -0,0 +1,94 @@
+from __future__ import annotations
+
+import asyncio
+import re
+from collections.abc import Mapping
+from typing import Any
+
+from wasmtime import component
+
+from ..api.models import EmptyRequest
+from ..api.registry import list_extension_api_methods
+from ..api.runtime import ExtensionAPIHost
+
+
+def add_extension_host_imports(
+    linker: Any,
+    api_host: ExtensionAPIHost,
+    event_loop: asyncio.AbstractEventLoop,
+) -> None:
+    with linker.root() as root:
+        methods_by_interface: dict[str, list[Any]] = {}
+        for method in list_extension_api_methods():
+            methods_by_interface.setdefault(method.host_interface, []).append(method)
+
+        for host_interface, methods in methods_by_interface.items():
+            with root.add_instance(f"lnbits:extension/{host_interface}") as host:
+                for method in methods:
+                    host.add_func(
+                        method.host_name.replace("_", "-"),
+                        _make_host_import(
+                            api_host,
+                            method.method_id,
+                            method.request_model is EmptyRequest,
+                            event_loop,
+                        ),
+                    )
+
+
+def _make_host_import(
+    api_host: ExtensionAPIHost,
+    host_name: str,
+    empty_request: bool,
+    event_loop: asyncio.AbstractEventLoop,
+) -> Any:
+    if empty_request:
+
+        def empty_host_import(_store: Any) -> Any:
+            future = asyncio.run_coroutine_threadsafe(
+                api_host.invoke(host_name), event_loop
+            )
+            response = future.result()
+            return _dict_to_component_record(response)
+
+        return empty_host_import
+
+    def host_import(_store: Any, request: Any = None) -> Any:
+        payload = _component_payload_to_dict(request)
+        future = asyncio.run_coroutine_threadsafe(
+            api_host.invoke(host_name, payload), event_loop
+        )
+        response = future.result()
+        return _dict_to_component_record(response)
+
+    return host_import
+
+
+def _component_payload_to_dict(value: Any) -> dict[str, Any]:
+    if value is None:
+        return {}
+    if hasattr(value, "__dict__"):
+        return dict(value.__dict__)
+    if isinstance(value, Mapping):
+        return dict(value)
+    raise TypeError("WASM host function payload must be a record.")
+
+
+def _dict_to_component_record(value: Mapping[str, Any]) -> Any:
+
+    record = component.Record()
+    for key, item in value.items():
+        setattr(record, _camel_to_kebab(key), _to_component_value(item))
+    return record
+
+
+def _to_component_value(value: Any) -> Any:
+    if isinstance(value, Mapping):
+        return _dict_to_component_record(value)
+    if isinstance(value, list):
+        return [_to_component_value(item) for item in value]
+    return value
+
+
+def _camel_to_kebab(value: str) -> str:
+    return re.sub(r"([a-z0-9])([A-Z])", r"\1-\2", value).replace("_", "-").lower()

lnbits/core/wasm_ext/wasm/invoke.py

@@ -0,0 +1,120 @@
+from __future__ import annotations
+
+import asyncio
+import json
+from collections.abc import Mapping
+from typing import Any
+
+from wasmtime import Store, WasiConfig, component
+
+from lnbits.core.crud.extensions import get_installed_extension
+from lnbits.core.db import core_app_extra
+
+from ..api.host import ExtensionHostAPI
+from ..api.runtime import ExtensionAPIHost
+from .component import _wasm_component, _wasm_engine
+from .host import add_extension_host_imports
+from .loader import WasmExtension
+
+
+async def invoke_wasm_extension_export(
+    ext_id: str,
+    export_name: str,
+    payload: Mapping[str, Any] | None = None,
+    *,
+    user: Any | None = None,
+    access_token: str | None = None,
+    context: str = "user",
+    owner_id: str | None = None,
+) -> dict[str, Any]:
+    extension = _get_registered_extension(ext_id)
+    permissions = await _extension_permissions(extension)
+    api = ExtensionHostAPI(
+        extension.id,
+        permissions,
+        user_id=_user_id(user),
+        access_token=access_token,
+        context=context,
+        owner_id=owner_id,
+    )
+    event_loop = asyncio.get_running_loop()
+
+    return await asyncio.to_thread(
+        _invoke_wasm_extension_export_sync,
+        extension,
+        export_name,
+        payload or {},
+        api,
+        event_loop,
+    )
+
+
+def _invoke_wasm_extension_export_sync(
+    extension: WasmExtension,
+    export_name: str,
+    payload: Mapping[str, Any],
+    api: ExtensionHostAPI,
+    event_loop: asyncio.AbstractEventLoop,
+) -> dict[str, Any]:
+
+    engine = _wasm_engine()
+    store = Store(engine)
+    store.set_wasi(WasiConfig())
+
+    linker = component.Linker(engine)
+    linker.add_wasip2()
+    add_extension_host_imports(linker, ExtensionAPIHost(api), event_loop)
+
+    wasm_component = _wasm_component(extension)
+    instance = linker.instantiate(store, wasm_component)
+    function = instance.get_func(store, export_name)
+    if not function:
+        raise KeyError(
+            f"WASM extension '{extension.id}' has no export '{export_name}'."
+        )
+
+    result = function(store, json.dumps(payload))
+    function.post_return(store)
+    return _parse_wasm_export_result(extension, result)
+
+
+def _parse_wasm_export_result(extension: WasmExtension, value: Any) -> dict[str, Any]:
+    if isinstance(value, bytes):
+        value = value.decode()
+    if not isinstance(value, str):
+        return {"ok": True, "data": value}
+
+    max_response_bytes = (
+        (extension.config.get("wasm") or {})
+        .get("resource_limits", {})
+        .get("max_response_bytes")
+    )
+    if isinstance(max_response_bytes, int):
+        response_size = len(value.encode())
+        if response_size > max_response_bytes:
+            raise ValueError(
+                f"WASM extension response is too large: {response_size} bytes."
+            )
+
+    parsed = json.loads(value)
+    if isinstance(parsed, dict):
+        return parsed
+    return {"ok": True, "data": parsed}
+
+
+def _get_registered_extension(ext_id: str) -> WasmExtension:
+    extension = core_app_extra.wasm_extension_registry.get(ext_id)
+    if extension:
+        return extension
+    raise RuntimeError(f"WASM extension '{ext_id}' is not registered.")
+
+
+async def _extension_permissions(extension: WasmExtension) -> list[Any]:
+    installed_extension = await get_installed_extension(extension.id)
+    if not installed_extension:
+        return []
+    return installed_extension.permissions
+
+
+def _user_id(user: Any | None) -> str | None:
+    return getattr(user, "id", None) if user else None

lnbits/core/wasm_ext/wasm/loader.py

@@ -0,0 +1,100 @@
+from __future__ import annotations
+
+import json
+from dataclasses import dataclass
+from pathlib import Path
+from typing import Any
+
+from lnbits.settings import settings
+
+
+@dataclass(frozen=True)
+class WasmExtension:
+    id: str
+    name: str
+    version: str
+    root_path: Path
+    module_path: Path
+    wit_path: Path | None
+    world: str
+    host_api: str
+    exports: list[dict[str, Any]]
+    config: dict[str, Any]
+
+
+def is_wasm_extension_id(ext_id: str) -> bool:
+    config = load_wasm_extension_config(ext_id)
+    return bool(config and config.get("extension_type") == "wasm")
+
+
+def is_wasm_extension_dir(ext_dir: Path) -> bool:
+    config = _load_json(ext_dir / "config.json")
+    return bool(config and config.get("extension_type") == "wasm")
+
+
+def load_wasm_extension_config(ext_id: str) -> dict[str, Any] | None:
+    ext_dir = Path(settings.lnbits_extensions_path, "extensions", ext_id)
+    return _load_json(ext_dir / "config.json")
+
+
+def load_wasm_extension(ext_id: str) -> WasmExtension:
+    ext_dir = Path(settings.lnbits_extensions_path, "extensions", ext_id)
+    config = load_wasm_extension_config(ext_id)
+    if not config:
+        raise FileNotFoundError(f"Missing WASM extension config for '{ext_id}'.")
+    if config.get("extension_type") != "wasm":
+        raise ValueError(f"Extension '{ext_id}' is not a WASM extension.")
+
+    wasm_config = config.get("wasm") or {}
+    module_path = _extension_path(ext_dir, wasm_config.get("module"))
+    wit_path = _optional_extension_path(ext_dir, wasm_config.get("wit"))
+    _check_wasm_module(module_path)
+    if wit_path and not wit_path.is_file():
+        raise FileNotFoundError(f"WIT file not found: {wit_path}")
+
+    return WasmExtension(
+        id=config.get("id") or ext_id,
+        name=config.get("name") or ext_id,
+        version=config.get("version") or "0.0",
+        root_path=ext_dir,
+        module_path=module_path,
+        wit_path=wit_path,
+        world=wasm_config.get("world") or "",
+        host_api=wasm_config.get("host_api") or "lnbits.core.wasm_ext.ExtensionHostAPI",
+        exports=wasm_config.get("exports") or [],
+        config=config,
+    )
+
+
+def _load_json(path: Path) -> dict[str, Any] | None:
+    if not path.is_file():
+        return None
+    with path.open("r", encoding="utf-8") as config_file:
+        value = json.load(config_file)
+    if not isinstance(value, dict):
+        raise ValueError(f"Expected JSON object in '{path}'.")
+    return value
+
+
+def _extension_path(ext_dir: Path, value: Any) -> Path:
+    if not isinstance(value, str) or not value:
+        raise ValueError(f"Missing relative path for extension '{ext_dir.name}'.")
+    path = (ext_dir / value).resolve()
+    if ext_dir.resolve() not in path.parents:
+        raise ValueError(f"Extension path escapes extension root: {value}")
+    return path
+
+
+def _optional_extension_path(ext_dir: Path, value: Any) -> Path | None:
+    if value is None:
+        return None
+    return _extension_path(ext_dir, value)
+
+
+def _check_wasm_module(path: Path) -> None:
+    if not path.is_file():
+        raise FileNotFoundError(f"WASM module not found: {path}")
+    with path.open("rb") as wasm_file:
+        magic = wasm_file.read(4)
+    if magic != b"\0asm":
+        raise ValueError(f"Invalid WASM module: {path}")

lnbits/decorators.py

@@ -448,7 +448,7 @@ async def _check_user_access(r: Request, user_id: str, conn: Connection | None =
 async def _check_user_extension_access(
     user_id: str, path: str, conn: Connection | None = None
 ):
-    ext_id = path_segments(path)[0]
+    ext_id = _extension_id_from_request_path(path)
     status = await check_user_extension_access(user_id, ext_id, conn=conn)
     if not status.success:
         raise HTTPException(
@@ -457,6 +457,15 @@ async def _check_user_extension_access(
         )
 
 
+def _extension_id_from_request_path(path: str) -> str:
+    segments = path_segments(path)
+    if len(segments) >= 2 and segments[0] == "ext":
+        return segments[1]
+    if len(segments) >= 4 and segments[:3] == ["api", "v1", "ext"]:
+        return segments[3]
+    return segments[0]
+
+
 async def _get_account_from_token(
     access_token: str, path: str, method: str, conn: Connection | None = None
 ) -> Account | None:

lnbits/static/i18n/en.js

@@ -519,6 +519,36 @@ window.localisation.en = {
   admin_settings: 'Admin Settings',
   extension_cost: 'This release requires a payment of minimum {cost} sats.',
   extension_paid_sats: 'You have already paid {paid_sats} sats.',
+  extension_permissions_title: 'Grant extension permissions',
+  extension_permissions_grant_install: 'Grant and install',
+  extension_permissions_high_risk_warning:
+    'This extension requests permissions that can move funds.',
+  extension_permission_risk_low: 'Low risk',
+  extension_permission_risk_medium: 'Medium risk',
+  extension_permission_risk_high: 'High risk',
+  extension_permission_warning_wallet_pay_invoice:
+    'Can spend funds from wallets available to your account.',
+  extension_permission_warning_extension_api_request_write:
+    'Can write data or trigger actions in approved extensions.',
+  extension_permission_ext_storage_read: 'Read extension storage',
+  extension_permission_ext_storage_read_public: 'Read public extension storage',
+  extension_permission_ext_storage_write: 'Write extension storage',
+  extension_permission_ext_storage_read_write: 'Read & Write extension storage',
+  extension_permission_extension_api_request: 'Use other extensions',
+  extension_permission_extension_api_request_extensions: 'Allowed extensions',
+  extension_permission_access_read: 'Read',
+  extension_permission_access_write: 'Write',
+  extension_permission_http_request: 'Connect to external websites',
+  extension_permission_http_request_hosts: 'Allowed hosts',
+  extension_permission_utils_basic: 'Use basic LNbits utilities',
+  extension_permission_ui_camera_scan_qr: 'Scan QR codes',
+  extension_permission_payments_watch: 'Watch payments',
+  extension_permission_wallet_create_invoice: 'Create invoices',
+  extension_permission_wallet_create_invoice_public:
+    'Create Lightning invoices from public pages',
+  extension_permission_wallet_balance_read: 'View wallet balances',
+  extension_permission_wallet_list: 'List wallets',
+  extension_permission_wallet_pay_invoice: 'Pay invoices',
   create_extension: 'Create Extension',
   release_details_error: 'Cannot get the release details.',
   pay_from_wallet: 'Pay from Wallet',

lnbits/static/js/components/lnbits-extension-permissions.js

@@ -0,0 +1,324 @@
+;(function () {
+  function translate(translateFn, key) {
+    return translateFn ? translateFn(key) : key
+  }
+
+  function permissionI18nKey(permission) {
+    return `extension_permission_${permission.id.replace(/[^A-Za-z0-9]/g, '_')}`
+  }
+
+  function permissionLabel(permission, translateFn) {
+    const key = permissionI18nKey(permission)
+    const label = translate(translateFn, key)
+    return label === key ? permission.id : label
+  }
+
+  function permissionManifestDescription(permission) {
+    return typeof permission.description === 'string'
+      ? permission.description
+      : ''
+  }
+
+  function lowRisk(translateFn) {
+    return {
+      level: 'low',
+      color: 'grey-6',
+      label: translate(translateFn, 'extension_permission_risk_low'),
+      warning: ''
+    }
+  }
+
+  function mediumRisk(translateFn) {
+    return {
+      level: 'medium',
+      color: 'warning',
+      label: translate(translateFn, 'extension_permission_risk_medium'),
+      warning: ''
+    }
+  }
+
+  function highRisk(translateFn, warningKey) {
+    return {
+      level: 'high',
+      color: 'negative',
+      label: translate(translateFn, 'extension_permission_risk_high'),
+      warning: translate(translateFn, warningKey)
+    }
+  }
+
+  function extensionDisplayName(extensions, extensionId) {
+    const extension = (extensions || []).find(
+      extension => extension.id === extensionId
+    )
+    return extension?.name || extensionId
+  }
+
+  function extensionApiPermissionTargets(permission, extensions) {
+    const extensionPolicies = permission.policies
+    if (!Array.isArray(extensionPolicies)) return []
+    return extensionPolicies
+      .map(extension => {
+        const extensionId =
+          typeof extension === 'string' ? extension : extension?.id
+        if (!extensionId) return null
+        const access =
+          typeof extension === 'string'
+            ? ['read']
+            : Array.isArray(extension.access) && extension.access.length
+              ? extension.access
+              : ['read']
+        return {
+          id: extensionId,
+          name: extensionDisplayName(extensions, extensionId),
+          access
+        }
+      })
+      .filter(Boolean)
+  }
+
+  function permissionRiskForPermission(permission, extensions, translateFn) {
+    if (permission.id === 'wallet.pay_invoice') {
+      return highRisk(
+        translateFn,
+        'extension_permission_warning_wallet_pay_invoice'
+      )
+    }
+    if (permission.id === 'extension.api.request') {
+      const hasWriteAccess = extensionApiPermissionTargets(
+        permission,
+        extensions
+      ).some(target => target.access.includes('write'))
+      return hasWriteAccess
+        ? highRisk(
+            translateFn,
+            'extension_permission_warning_extension_api_request_write'
+          )
+        : mediumRisk(translateFn)
+    }
+    if (permission.id === 'http.request') {
+      return mediumRisk(translateFn)
+    }
+    if (
+      [
+        'wallet.list',
+        'wallet.balance.read',
+        'wallet.create_invoice_public',
+        'ext.storage.read_public',
+        'payments.watch'
+      ].includes(permission.id)
+    ) {
+      return mediumRisk(translateFn)
+    }
+    return lowRisk(translateFn)
+  }
+
+  function permissionRisk(permissions, extensions, translateFn) {
+    const risks = permissions.map(permission =>
+      permissionRiskForPermission(permission, extensions, translateFn)
+    )
+    const highestRisk = risks.find(risk => risk.level === 'high')
+    if (highestRisk) return highestRisk
+    return risks.find(risk => risk.level === 'medium') || lowRisk(translateFn)
+  }
+
+  function permissionOrderIndex(permissionId) {
+    const order = [
+      'wallet.pay_invoice',
+      'wallet.list',
+      'wallet.balance.read',
+      'extension.api.request',
+      'http.request',
+      'ui.camera.scan_qr',
+      'ext.storage.read',
+      'ext.storage.write',
+      'ext.storage.read_public',
+      'wallet.create_invoice_public',
+      'wallet.create_invoice',
+      'utils.basic'
+    ]
+    const index = order.indexOf(permissionId)
+    return index === -1 ? order.length : index
+  }
+
+  function publicStorageFieldGroups(permission) {
+    const tables = permission.policies
+    if (!Array.isArray(tables)) return []
+    return tables
+      .map(table => {
+        const tableName =
+          typeof table === 'string' ? table : table?.table_name || ''
+        const fields =
+          typeof table === 'string' || !Array.isArray(table?.public_fields)
+            ? []
+            : table.public_fields.filter(
+                field => typeof field === 'string' && field
+              )
+        return tableName ? {table: tableName, fields} : null
+      })
+      .filter(Boolean)
+  }
+
+  function httpRequestPermissionHosts(permission) {
+    const hosts = permission.policies
+    if (!Array.isArray(hosts)) return []
+    return hosts
+      .map(host => (typeof host === 'string' ? host : host?.host || ''))
+      .filter(host => typeof host === 'string' && host)
+  }
+
+  function publicInvoicePolicies(permission) {
+    const policies = permission.policies
+    if (!Array.isArray(policies)) return []
+    return policies
+      .map(policy => {
+        if (!policy || typeof policy !== 'object') return null
+        const table = policy.table
+        const walletField = policy.wallet_field
+        if (typeof table !== 'string' || !table) return null
+        if (typeof walletField !== 'string' || !walletField) return null
+        return {table, walletField}
+      })
+      .filter(Boolean)
+  }
+
+  function permissionDisplayItem(permissions, extensions, translateFn) {
+    const permission = permissions[0]
+    const isReadWriteStorage =
+      permissions.length === 2 &&
+      permissions.some(permission => permission.id === 'ext.storage.read') &&
+      permissions.some(permission => permission.id === 'ext.storage.write')
+    const descriptions = permissions
+      .map(permission => permissionManifestDescription(permission))
+      .filter(Boolean)
+    const item = {
+      id: isReadWriteStorage ? 'ext.storage.read_write' : permission.id,
+      label: isReadWriteStorage
+        ? translate(translateFn, 'extension_permission_ext_storage_read_write')
+        : permissionLabel(permission, translateFn),
+      risk: permissionRisk(permissions, extensions, translateFn),
+      badges: [],
+      descriptions,
+      fieldGroups: [],
+      invoicePolicies: [],
+      extensionAccess: [],
+      httpHosts: []
+    }
+
+    if (permission.id === 'ext.storage.read_public') {
+      item.fieldGroups = publicStorageFieldGroups(permission)
+      item.badges = item.fieldGroups.map(group => ({
+        key: group.table,
+        label: group.table
+      }))
+    }
+
+    if (permission.id === 'extension.api.request') {
+      item.extensionAccess = extensionApiPermissionTargets(
+        permission,
+        extensions
+      )
+      item.badges = item.extensionAccess.map(target => ({
+        key: target.id,
+        label: target.name
+      }))
+    }
+
+    if (permission.id === 'http.request') {
+      item.httpHosts = httpRequestPermissionHosts(permission)
+    }
+
+    if (permission.id === 'wallet.create_invoice_public') {
+      item.invoicePolicies = publicInvoicePolicies(permission)
+    }
+
+    return item
+  }
+
+  function displayItems({permissions, extensions, translate}) {
+    const permissionList = permissions || []
+    const permissionsById = new Map(
+      permissionList.map(permission => [permission.id, permission])
+    )
+    const hasReadWriteStorage =
+      permissionsById.has('ext.storage.read') &&
+      permissionsById.has('ext.storage.write')
+    let addedReadWriteStorage = false
+
+    return permissionList
+      .map((permission, index) => {
+        if (
+          hasReadWriteStorage &&
+          ['ext.storage.read', 'ext.storage.write'].includes(permission.id)
+        ) {
+          if (addedReadWriteStorage) return null
+          addedReadWriteStorage = true
+          return {
+            index,
+            orderId: 'ext.storage.read',
+            permissions: [
+              permissionsById.get('ext.storage.read'),
+              permissionsById.get('ext.storage.write')
+            ]
+          }
+        }
+        return {
+          index,
+          orderId: permission.id,
+          permissions: [permission]
+        }
+      })
+      .filter(Boolean)
+      .sort((left, right) => {
+        const leftOrder = permissionOrderIndex(left.orderId)
+        const rightOrder = permissionOrderIndex(right.orderId)
+        return leftOrder === rightOrder
+          ? left.index - right.index
+          : leftOrder - rightOrder
+      })
+      .map(group =>
+        permissionDisplayItem(group.permissions, extensions || [], translate)
+      )
+  }
+
+  window.LNbitsExtensionPermissions = {
+    displayItems,
+    hasHighRisk({permissions, extensions, translate}) {
+      return displayItems({permissions, extensions, translate}).some(
+        permission => permission.risk.level === 'high'
+      )
+    }
+  }
+
+  window.app.component('lnbits-extension-permissions', {
+    template: '#lnbits-extension-permissions',
+    props: {
+      permissions: {
+        type: Array,
+        default: () => []
+      },
+      extensions: {
+        type: Array,
+        default: () => []
+      }
+    },
+    computed: {
+      displayItems() {
+        return window.LNbitsExtensionPermissions.displayItems({
+          permissions: this.permissions,
+          extensions: this.extensions,
+          translate: key => this.$t(key)
+        })
+      }
+    },
+    methods: {
+      publicInvoicePolicySentence(policy) {
+        return `Invoices will be created using ${policy.walletField} from ${policy.table}.`
+      },
+      permissionAccessLabel(access) {
+        const key = `extension_permission_access_${access}`
+        const label = this.$t(key)
+        return label === key ? access : label
+      }
+    }
+  })
+})()

lnbits/static/js/components/lnbits-manage-extension-list.js

@@ -35,6 +35,18 @@ window.app.component('lnbits-manage-extension-list', {
             .toLocaleLowerCase()
             .includes(this.searchTerm.toLocaleLowerCase())
         })
+    },
+    extensionUrl(extension) {
+      if (extension.is_wasm) {
+        return `/ext/${extension.code}`
+      }
+      return `/${extension.code}/`
+    },
+    extensionActive(extension) {
+      const extensionPath = extension.is_wasm
+        ? `/ext/${extension.code}`
+        : `/${extension.code}`
+      return this.$route.path.startsWith(extensionPath)
     }
   },
   async created() {

lnbits/static/js/init-app.js

@@ -139,6 +139,16 @@ const routes = [
     name: 'PageError',
     component: PageError
   },
+  {
+    path: '/ext/:extId',
+    name: 'WasmExtensionRoot',
+    component: window.WasmExtensionComponent
+  },
+  {
+    path: '/ext/:extId/:pathMatch(.*)*',
+    name: 'WasmExtension',
+    component: window.WasmExtensionComponent
+  },
   {
     path: '/:pathMatch(.*)*',
     name: 'DynamicComponent',

lnbits/static/js/pages/extensions.js

@@ -24,6 +24,11 @@ window.PageExtensions = {
       selectedExtensionDetails: null,
       selectedExtensionRepos: null,
       selectedRelease: null,
+      permissionGrant: {
+        show: false,
+        permissions: [],
+        resolve: null
+      },
       uninstallAndDropDb: false,
       maxStars: 5,
       paylinkWebsocket: null,
@@ -132,6 +137,12 @@ window.PageExtensions = {
       // the install logic has been triggered one way or another
       this.unsubscribeFromPaylinkWs()
 
+      const grantedPermissions =
+        await this.resolveExtensionPermissionGrant(release)
+      if (grantedPermissions === null) {
+        return
+      }
+
       this.selectedExtension.inProgress = true
       this.showManageExtensionDialog = false
       release.payment_hash =
@@ -143,7 +154,8 @@ window.PageExtensions = {
           archive: release.archive,
           source_repo: release.source_repo,
           payment_hash: release.payment_hash,
-          version: release.version
+          version: release.version,
+          permissions: grantedPermissions
         })
         .then(response => {
           this.selectedExtension.inProgress = false
@@ -152,6 +164,7 @@ window.PageExtensions = {
           )
           extension.isAvailable = true
           extension.isInstalled = true
+          extension.icon = response.data.icon || extension.icon
           extension.installedRelease = release
           this.toggleExtension(extension)
           extension.inProgress = false
@@ -406,6 +419,10 @@ window.PageExtensions = {
     },
     async payAndInstall(release) {
       try {
+        if ((await this.resolveExtensionPermissionGrant(release)) === null) {
+          return
+        }
+
         this.selectedExtension.inProgress = true
         this.showManageExtensionDialog = false
         const paymentInfo = await this.requestPaymentForInstall(
@@ -451,6 +468,10 @@ window.PageExtensions = {
       }
     },
     async showInstallQRCode(release) {
+      if ((await this.resolveExtensionPermissionGrant(release)) === null) {
+        return
+      }
+
       this.selectedRelease = release
 
       try {
@@ -613,6 +634,9 @@ window.PageExtensions = {
 
       return ''
     },
+    extensionOpenUrl(extension) {
+      return extension.isWasm ? `/ext/${extension.id}` : `/${extension.id}`
+    },
     async getGitHubReleaseDetails(release) {
       if (!release.is_github_release || release.loaded) {
         return
@@ -628,6 +652,8 @@ window.PageExtensions = {
         release.is_version_compatible = data.is_version_compatible
         release.min_lnbits_version = data.min_lnbits_version
         release.warning = data.warning
+        release.extension_type = data.extension_type
+        release.permissions = data.permissions || []
       } catch (error) {
         console.warn(error)
         release.error = error
@@ -636,6 +662,75 @@ window.PageExtensions = {
         release.inProgress = false
       }
     },
+    async resolveExtensionPermissionGrant(release) {
+      const permissions = this.extensionPermissionsForRelease(release)
+      if (
+        !this.releaseRequiresPermissionGrant(release) ||
+        !permissions.length
+      ) {
+        return []
+      }
+      if (release.grantedPermissions) {
+        return release.grantedPermissions
+      }
+      const grantedPermissions =
+        await this.confirmExtensionPermissions(permissions)
+      if (!grantedPermissions) {
+        return null
+      }
+      release.grantedPermissions = grantedPermissions
+      return grantedPermissions
+    },
+    extensionPermissionsForRelease(release) {
+      return release.permissions || this.selectedExtension?.permissions || []
+    },
+    releaseRequiresPermissionGrant(release) {
+      return (
+        release.extension_type === 'wasm' ||
+        this.selectedExtension?.isWasm === true
+      )
+    },
+    confirmExtensionPermissions(permissions) {
+      return new Promise(resolve => {
+        this.selectedRelease = null
+        this.permissionGrant = {
+          show: true,
+          permissions,
+          resolve
+        }
+        this.showManageExtensionDialog = true
+      })
+    },
+    grantExtensionPermissions() {
+      this.resolveExtensionPermissionDialog(this.permissionGrant.permissions)
+    },
+    cancelExtensionPermissions() {
+      this.resolveExtensionPermissionDialog(null)
+    },
+    onManageExtensionDialogHide() {
+      if (this.permissionGrant.show) {
+        this.resolveExtensionPermissionDialog(null)
+      }
+    },
+    resolveExtensionPermissionDialog(grantedPermissions) {
+      const resolve = this.permissionGrant.resolve
+      this.permissionGrant = {
+        show: false,
+        permissions: [],
+        resolve: null
+      }
+      this.showManageExtensionDialog = false
+      if (resolve) {
+        resolve(grantedPermissions)
+      }
+    },
+    permissionGrantHasHighRisk() {
+      return window.LNbitsExtensionPermissions.hasHighRisk({
+        permissions: this.permissionGrant.permissions,
+        extensions: this.extensions,
+        translate: key => this.$t(key)
+      })
+    },
     async selectAllUpdatableExtensionss() {
       this.updatableExtensions.forEach(e => (e.selectedForUpdate = true))
     },
@@ -646,6 +741,13 @@ window.PageExtensions = {
           if (!ext.selectedForUpdate) {
             continue
           }
+          if (ext.isWasm) {
+            Quasar.Notify.create({
+              type: 'warning',
+              message: `Skipping ${ext.id}; this extension update requires permission approval.`
+            })
+            continue
+          }
           ext.inProgress = true
           await LNbits.api.request('POST', `/api/v1/extension`, null, {
             ext_id: ext.id,

lnbits/static/js/wasm-extension-component.js

@@ -0,0 +1,566 @@
+window.WasmExtensionComponent = {
+  template: `
+    <div class="wasm-extension-page relative-position">
+      <q-inner-loading :showing="loading && !frameUrl">
+        <q-spinner-dots size="40px"></q-spinner-dots>
+      </q-inner-loading>
+      <q-banner v-if="error" class="q-ma-md bg-negative text-white">
+        {{ error }}
+      </q-banner>
+      <iframe
+        v-else-if="frameUrl"
+        ref="frame"
+        :key="frameUrl"
+        class="wasm-extension-frame"
+        :src="frameUrl"
+        :title="extensionName || 'Extension'"
+        sandbox="allow-scripts"
+        allow="clipboard-write"
+        referrerpolicy="no-referrer"
+      ></iframe>
+      <q-dialog v-model="cameraPrompt.show" persistent>
+        <q-card style="width: min(520px, calc(100vw - 32px)); max-width: 520px">
+          <q-card-section>
+            <div class="text-h6">Camera access</div>
+          </q-card-section>
+          <q-card-section class="q-pt-none">
+            {{ cameraPrompt.extensionName }} wants to access the camera to scan a QR code.
+          </q-card-section>
+          <q-card-actions align="right">
+            <q-btn
+              flat
+              color="negative"
+              label="Deny"
+              @click="resolveCameraPrompt('deny')"
+            ></q-btn>
+            <q-btn
+              flat
+              color="primary"
+              label="Allow"
+              @click="resolveCameraPrompt('allow')"
+            ></q-btn>
+            <q-btn
+              unelevated
+              color="primary"
+              label="Allow and Remember"
+              @click="resolveCameraPrompt('allow_remember')"
+            ></q-btn>
+          </q-card-actions>
+        </q-card>
+      </q-dialog>
+    </div>
+  `,
+  data() {
+    return {
+      allowedPaymentHashes: new Set(),
+      bridge: {
+        apiRoutes: [],
+        extensionId: '',
+        permissions: [],
+        public: false,
+        query: {},
+        routeParams: {}
+      },
+      bridgePort: null,
+      cameraPrompt: {
+        extensionName: '',
+        reject: null,
+        resolve: null,
+        show: false
+      },
+      error: '',
+      extensionName: '',
+      frameUrl: '',
+      handleWindowMessage: null,
+      loading: false,
+      loadId: 0,
+      paymentSubscriptions: new Map()
+    }
+  },
+  created() {
+    this.handleWindowMessage = event => this.onWindowMessage(event)
+    window.addEventListener('message', this.handleWindowMessage)
+  },
+  unmounted() {
+    window.removeEventListener('message', this.handleWindowMessage)
+    this.rejectCameraPrompt('Camera scan cancelled.')
+    this.closeBridgePort()
+  },
+  watch: {
+    '$route.fullPath': {
+      immediate: true,
+      handler() {
+        this.loadFrameConfig()
+      }
+    }
+  },
+  methods: {
+    emptyBridge() {
+      return {
+        apiRoutes: [],
+        extensionId: '',
+        permissions: [],
+        public: false,
+        query: {},
+        routeParams: {}
+      }
+    },
+    plainBridgeContext() {
+      return {
+        extensionId: String(this.bridge.extensionId || ''),
+        public: Boolean(this.bridge.public),
+        routeParams: this.plainValue(this.bridge.routeParams || {}),
+        query: this.plainValue(this.bridge.query || {})
+      }
+    },
+    hasBridgePermission(permission) {
+      return (this.bridge.permissions || []).includes(permission)
+    },
+    cameraPromptStorageKey() {
+      return `lnbits.ext.permissions.${this.bridge.extensionId}.ui.camera.scan_qr`
+    },
+    emptyCameraPrompt() {
+      return {
+        extensionName: '',
+        reject: null,
+        resolve: null,
+        show: false
+      }
+    },
+    plainValue(value) {
+      try {
+        return JSON.parse(JSON.stringify(value))
+      } catch (_error) {
+        return {}
+      }
+    },
+    async loadFrameConfig() {
+      const extId = String(this.$route.params.extId || '')
+      const loadId = ++this.loadId
+      this.loading = true
+      this.error = ''
+      this.frameUrl = ''
+      this.bridge = this.emptyBridge()
+      this.allowedPaymentHashes.clear()
+      this.rejectCameraPrompt('Camera scan cancelled.')
+      this.closeBridgePort()
+
+      try {
+        const response = await fetch(
+          `/api/v1/ext/${encodeURIComponent(extId)}/_ui/frame`,
+          {
+            method: 'POST',
+            headers: {'content-type': 'application/json'},
+            credentials: 'same-origin',
+            body: JSON.stringify({
+              path: this.$route.path,
+              query: this.$route.query || {}
+            })
+          }
+        )
+        const text = await response.text()
+        let data = {}
+        if (text) {
+          try {
+            data = JSON.parse(text)
+          } catch (_error) {
+            data = {detail: text}
+          }
+        }
+        if (!response.ok) {
+          throw new Error(data?.detail || 'Failed to load extension page.')
+        }
+        if (loadId !== this.loadId) return
+
+        this.bridge = data.bridge || this.emptyBridge()
+        this.extensionName = data.extension?.name || extId
+        this.frameUrl = data.frameUrl
+      } catch (error) {
+        if (loadId !== this.loadId) return
+        console.error('[lnbits wasm extension] Failed to load frame.', error)
+        this.error = error instanceof Error ? error.message : String(error)
+      } finally {
+        if (loadId === this.loadId) {
+          this.loading = false
+        }
+      }
+    },
+    extensionFrameWindow() {
+      return this.$refs.frame?.contentWindow
+    },
+    sendResponse(reply, id, payload) {
+      reply({
+        type: 'lnbits-extension:response',
+        id,
+        ...payload
+      })
+    },
+    allowedApiRoute(method, path) {
+      let url
+      try {
+        url = new URL(path, window.location.origin)
+      } catch (_error) {
+        return false
+      }
+      if (url.origin !== window.location.origin) return false
+
+      method = String(method || 'GET').toUpperCase()
+      return (this.bridge.apiRoutes || []).some(route => {
+        return (
+          route.method === method &&
+          new RegExp(route.pattern).test(url.pathname)
+        )
+      })
+    },
+    async callApi(message) {
+      const method = String(message.method || 'GET').toUpperCase()
+      const path = String(message.path || '')
+      if (!this.allowedApiRoute(method, path)) {
+        throw new Error('Extension API route is not allowed.')
+      }
+
+      const options = {
+        method,
+        headers: {},
+        credentials: 'same-origin'
+      }
+      if (message.body !== undefined && message.body !== null) {
+        options.headers['content-type'] = 'application/json'
+        options.body = JSON.stringify(message.body)
+      }
+
+      const response = await fetch(path, options)
+      const text = await response.text()
+      let data = text
+      if (text) {
+        try {
+          data = JSON.parse(text)
+        } catch (_error) {
+          data = text
+        }
+      }
+      if (!response.ok) {
+        throw new Error(
+          typeof data === 'object' && data.detail ? data.detail : text
+        )
+      }
+      this.rememberPaymentHashes(data)
+      return data
+    },
+    notify(message) {
+      const level = ['positive', 'negative', 'warning', 'info'].includes(
+        message.level
+      )
+        ? message.level
+        : 'info'
+      if (window.Quasar?.Notify) {
+        window.Quasar.Notify.create({
+          color: level,
+          message: String(message.message || '')
+        })
+      }
+    },
+    async scanQrCode() {
+      if (!this.hasBridgePermission('ui.camera.scan_qr')) {
+        throw new Error('Extension is missing scanner permission.')
+      }
+      if (!this.g) {
+        throw new Error('LNbits scanner is not available.')
+      }
+      if (this.g.scanner) {
+        throw new Error('A scanner is already active.')
+      }
+      await this.requireCameraScanApproval()
+      if (this.g.scanner) {
+        throw new Error('A scanner is already active.')
+      }
+
+      return new Promise((resolve, reject) => {
+        let completed = false
+
+        const cleanup = () => {
+          window.clearTimeout(timeout)
+          window.clearInterval(cancelPoll)
+          if (this.g.scanner === onScan) {
+            this.g.scanner = null
+          }
+        }
+
+        const complete = callback => value => {
+          if (completed) return
+          completed = true
+          cleanup()
+          callback(value)
+        }
+
+        const onScan = value => {
+          complete(resolve)({value: String(value || '')})
+        }
+
+        const timeout = window.setTimeout(() => {
+          complete(reject)(new Error('QR scan timed out.'))
+        }, 120000)
+
+        const cancelPoll = window.setInterval(() => {
+          if (!completed && this.g.scanner !== onScan) {
+            complete(reject)(new Error('QR scan cancelled.'))
+          }
+        }, 250)
+
+        this.g.scanner = onScan
+      })
+    },
+    requireCameraScanApproval() {
+      if (this.isCameraScanRemembered()) return Promise.resolve()
+      if (this.cameraPrompt.show) {
+        return Promise.reject(
+          new Error('Camera access prompt is already open.')
+        )
+      }
+
+      return new Promise((resolve, reject) => {
+        this.cameraPrompt = {
+          extensionName:
+            this.extensionName || this.bridge.extensionId || 'This extension',
+          reject,
+          resolve,
+          show: true
+        }
+      })
+    },
+    isCameraScanRemembered() {
+      try {
+        return (
+          this.$q.localStorage.getItem(this.cameraPromptStorageKey()) ===
+          'allow'
+        )
+      } catch (_error) {
+        return false
+      }
+    },
+    rememberCameraScanApproval() {
+      try {
+        this.$q.localStorage.set(this.cameraPromptStorageKey(), 'allow')
+      } catch (_error) {}
+    },
+    resolveCameraPrompt(decision) {
+      const resolve = this.cameraPrompt.resolve
+      const reject = this.cameraPrompt.reject
+      this.cameraPrompt = this.emptyCameraPrompt()
+
+      if (decision === 'allow_remember') {
+        this.rememberCameraScanApproval()
+        resolve?.()
+        return
+      }
+      if (decision === 'allow') {
+        resolve?.()
+        return
+      }
+      reject?.(new Error('Camera scan denied by user.'))
+    },
+    rejectCameraPrompt(message) {
+      const reject = this.cameraPrompt.reject
+      this.cameraPrompt = this.emptyCameraPrompt()
+      reject?.(new Error(message))
+    },
+    rememberPaymentHashes(value) {
+      if (!value || typeof value !== 'object') return
+
+      if (Array.isArray(value)) {
+        value.forEach(item => this.rememberPaymentHashes(item))
+        return
+      }
+
+      for (const [key, item] of Object.entries(value)) {
+        if (
+          ['paymentHash', 'payment_hash'].includes(key) &&
+          this.isPaymentHash(item)
+        ) {
+          this.allowedPaymentHashes.add(item)
+        }
+        this.rememberPaymentHashes(item)
+      }
+    },
+    isPaymentHash(value) {
+      return typeof value === 'string' && /^[a-f0-9]{64}$/i.test(value)
+    },
+    websocketUrl(path) {
+      const url = new URL(window.location.href)
+      url.protocol = url.protocol === 'https:' ? 'wss:' : 'ws:'
+      url.pathname = path
+      url.search = ''
+      url.hash = ''
+      return url.toString()
+    },
+    sendBridgeEvent(message) {
+      if (!this.bridgePort) return
+      this.bridgePort.postMessage({
+        type: 'lnbits-extension:event',
+        ...message
+      })
+    },
+    closePaymentSubscription(subscriptionId) {
+      const subscription = this.paymentSubscriptions.get(subscriptionId)
+      if (!subscription) return
+      this.paymentSubscriptions.delete(subscriptionId)
+      try {
+        subscription.socket.close()
+      } catch (_error) {}
+    },
+    closePaymentSubscriptions() {
+      for (const subscriptionId of Array.from(
+        this.paymentSubscriptions.keys()
+      )) {
+        this.closePaymentSubscription(subscriptionId)
+      }
+    },
+    closeBridgePort() {
+      this.closePaymentSubscriptions()
+      this.bridgePort?.close()
+      this.bridgePort = null
+    },
+    subscribePayment(message) {
+      const subscriptionId = String(message.subscriptionId || '')
+      const paymentHash = String(message.paymentHash || '')
+
+      if (!subscriptionId || !this.isPaymentHash(paymentHash)) {
+        throw new Error('Invalid payment subscription.')
+      }
+      if (!this.allowedPaymentHashes.has(paymentHash)) {
+        throw new Error('Payment subscription is not allowed.')
+      }
+
+      this.closePaymentSubscription(subscriptionId)
+
+      const socket = new WebSocket(
+        this.websocketUrl(`/api/v1/ws/${encodeURIComponent(paymentHash)}`)
+      )
+      this.paymentSubscriptions.set(subscriptionId, {paymentHash, socket})
+
+      socket.addEventListener('message', event => {
+        let data = event.data
+        try {
+          data = JSON.parse(event.data)
+        } catch (_error) {}
+
+        this.sendBridgeEvent({
+          event: 'payment.update',
+          subscriptionId,
+          paymentHash,
+          data
+        })
+
+        if (
+          data &&
+          typeof data === 'object' &&
+          (data.pending === false ||
+            ['success', 'settled', 'paid'].includes(String(data.status || '')))
+        ) {
+          this.sendBridgeEvent({
+            event: 'payment.settled',
+            subscriptionId,
+            paymentHash,
+            data
+          })
+          this.closePaymentSubscription(subscriptionId)
+        }
+      })
+      socket.addEventListener('error', () => {
+        this.sendBridgeEvent({
+          event: 'payment.error',
+          subscriptionId,
+          paymentHash
+        })
+        this.closePaymentSubscription(subscriptionId)
+      })
+      socket.addEventListener('close', () => {
+        this.paymentSubscriptions.delete(subscriptionId)
+      })
+    },
+    async handleBridgeRequest(message, reply) {
+      if (!message || message.type !== 'lnbits-extension:request') return
+
+      try {
+        if (message.action === 'context') {
+          this.sendResponse(reply, message.id, {
+            ok: true,
+            data: this.plainBridgeContext()
+          })
+          return
+        }
+
+        if (message.action === 'api') {
+          this.sendResponse(reply, message.id, {
+            ok: true,
+            data: await this.callApi(message)
+          })
+          return
+        }
+
+        if (message.action === 'ui.notify') {
+          this.notify(message)
+          this.sendResponse(reply, message.id, {
+            ok: true,
+            data: {ok: true}
+          })
+          return
+        }
+
+        if (message.action === 'ui.scan_qr') {
+          this.sendResponse(reply, message.id, {
+            ok: true,
+            data: await this.scanQrCode()
+          })
+          return
+        }
+
+        if (message.action === 'payment.subscribe') {
+          this.subscribePayment(message)
+          this.sendResponse(reply, message.id, {
+            ok: true,
+            data: {ok: true}
+          })
+          return
+        }
+
+        if (message.action === 'payment.unsubscribe') {
+          this.closePaymentSubscription(String(message.subscriptionId || ''))
+          this.sendResponse(reply, message.id, {
+            ok: true,
+            data: {ok: true}
+          })
+          return
+        }
+
+        throw new Error('Unknown extension bridge action.')
+      } catch (error) {
+        this.sendResponse(reply, message.id, {
+          ok: false,
+          error: error instanceof Error ? error.message : String(error)
+        })
+      }
+    },
+    onWindowMessage(event) {
+      if (event.source !== this.extensionFrameWindow()) return
+      const message = event.data
+      if (!message || message.type !== 'lnbits-extension:connect') return
+
+      const port = event.ports?.[0]
+      if (!port) return
+
+      this.closeBridgePort()
+      this.bridgePort = port
+      this.bridgePort.addEventListener('message', portEvent => {
+        this.handleBridgeRequest(portEvent.data, response => {
+          port.postMessage(response)
+        })
+      })
+      this.bridgePort.start()
+      this.bridgePort.postMessage({
+        type: 'lnbits-extension:connected',
+        id: message.id
+      })
+    }
+  }
+}

lnbits/static/vendor.json

@@ -90,6 +90,7 @@
     "js/components/lnbits-theme.js",
     "js/components/lnbits-qrcode-scanner.js",
     "js/components/lnbits-manage-extension-list.js",
+    "js/components/lnbits-extension-permissions.js",
     "js/components/lnbits-manage-wallet-list.js",
     "js/components/lnbits-language-dropdown.js",
     "js/components/lnbits-payment-list.js",
@@ -97,6 +98,7 @@
     "js/components/extension-settings.js",
     "js/components/data-fields.js",
     "js/components.js",
+    "js/wasm-extension-component.js",
     "js/init-app.js"
   ],
   "css": ["vendor/quasar.css", "css/base.css"]

lnbits/templates/base.html

@@ -16,6 +16,18 @@
         src: url("{{ static_url_for('static', 'fonts/material-icons-v50.woff2') }}")
           format('woff2');
       }
+
+      .wasm-extension-page,
+      .wasm-extension-frame {
+        height: calc(100vh - 56px);
+        min-height: calc(100vh - 56px);
+        width: 100%;
+      }
+
+      .wasm-extension-frame {
+        border: 0;
+        display: block;
+      }
     </style>
     <title>{% block title %}{{ SITE_TITLE }}{% endblock %}</title>
     <meta charset="utf-8" />
@@ -44,12 +56,14 @@
         <lnbits-drawer v-if="g.user && !g.isPublicPage"></lnbits-drawer>
         {% block page_container %}
         <q-page-container>
-          <q-page class="q-px-md q-py-lg" :class="{'q-px-lg': $q.screen.gt.xs}">
+          <q-page
+            :class="$route.path.startsWith('/ext/') ? 'q-pa-none' : ['q-px-md', 'q-py-lg', {'q-px-lg': $q.screen.gt.xs}]"
+          >
             <lnbits-wallet-new
-              v-if="g.user && !g.isPublicPage"
+              v-if="g.user && !g.isPublicPage && !$route.path.startsWith('/ext/')"
             ></lnbits-wallet-new>
             <lnbits-header-wallets
-              v-if="g.user && !g.isPublicPage"
+              v-if="g.user && !g.isPublicPage && !$route.path.startsWith('/ext/')"
             ></lnbits-header-wallets>
             <!-- block page content from static extensions -->
             <div

lnbits/templates/components.vue

@@ -20,6 +20,7 @@ include('components/lnbits-header-wallets.vue') %} {%
 include('components/lnbits-drawer.vue') %} {%
 include('components/lnbits-home-logos.vue') %} {%
 include('components/lnbits-manage-extension-list.vue') %} {%
+include('components/lnbits-extension-permissions.vue') %} {%
 include('components/lnbits-manage-wallet-list.vue') %} {%
 include('components/lnbits-language-dropdown.vue') %} {%
 include('components/lnbits-payment-list.vue') %} {%

lnbits/templates/components/lnbits-extension-permissions.vue

@@ -0,0 +1,105 @@
+<template id="lnbits-extension-permissions">
+  <q-list bordered separator>
+    <q-expansion-item
+      v-for="permission of displayItems"
+      :key="permission.id"
+      dense
+      expand-separator
+      class="q-pt-xs"
+    >
+      <template v-slot:header>
+        <q-item-section>
+          <q-item-label class="text-weight-medium">
+            <span v-text="permission.label"></span>
+          </q-item-label>
+        </q-item-section>
+        <q-item-section
+          v-if="permission.risk.level !== 'low' || permission.badges.length"
+          side
+          top
+        >
+          <div class="row items-center justify-end q-gutter-xs">
+            <q-badge
+              v-for="badge of permission.badges"
+              :key="badge.key"
+              outline
+              color="primary"
+              v-text="badge.label"
+            ></q-badge>
+            <q-badge
+              v-if="permission.risk.level !== 'low'"
+              :color="permission.risk.color"
+              v-text="permission.risk.label"
+            ></q-badge>
+          </div>
+        </q-item-section>
+      </template>
+
+      <div class="q-px-md q-pb-sm">
+        <div
+          v-if="permission.risk.warning"
+          class="row items-center text-negative text-caption q-mb-xs"
+        >
+          <q-icon name="warning" size="16px" class="q-mr-xs"></q-icon>
+          <span v-text="permission.risk.warning"></span>
+        </div>
+        <p
+          v-for="description of permission.descriptions"
+          :key="description"
+          class="text-caption q-mb-xs"
+          v-text="description"
+        ></p>
+        <p
+          v-for="policy of permission.invoicePolicies"
+          :key="policy.table + ':' + policy.walletField"
+          class="text-caption q-mb-xs"
+          v-text="publicInvoicePolicySentence(policy)"
+        ></p>
+        <ul v-if="permission.fieldGroups.length" class="q-my-sm q-pl-md">
+          <li v-for="group of permission.fieldGroups" :key="group.table">
+            <span v-text="group.table"></span>
+            <ul v-if="group.fields.length" class="q-pl-md">
+              <li
+                v-for="field of group.fields"
+                :key="group.table + ':' + field"
+                v-text="field"
+              ></li>
+            </ul>
+          </li>
+        </ul>
+        <div v-if="permission.extensionAccess.length" class="q-mt-sm">
+          <div
+            class="text-caption text-grey"
+            v-text="$t('extension_permission_extension_api_request_extensions')"
+          ></div>
+          <div
+            v-for="target of permission.extensionAccess"
+            :key="target.id"
+            class="row items-center q-gutter-xs q-mt-xs"
+          >
+            <span class="text-caption" v-text="target.name"></span>
+            <q-badge
+              v-for="access of target.access"
+              :key="target.id + access"
+              color="grey-7"
+              v-text="permissionAccessLabel(access)"
+            ></q-badge>
+          </div>
+        </div>
+        <div v-if="permission.httpHosts.length" class="q-mt-sm">
+          <div
+            class="text-caption text-grey"
+            v-text="$t('extension_permission_http_request_hosts')"
+          ></div>
+          <ul class="q-my-sm q-pl-md">
+            <li
+              v-for="host of permission.httpHosts"
+              :key="host"
+              v-text="host"
+            ></li>
+          </ul>
+        </div>
+      </div>
+    </q-expansion-item>
+  </q-list>
+</template>

lnbits/templates/components/lnbits-manage-extension-list.vue

@@ -18,13 +18,18 @@
     <q-item
       v-for="extension in userExtensions"
       clickable
-      :active="$route.path.startsWith('/' + extension.code)"
+      :active="extensionActive(extension)"
       tag="a"
-      :to="'/' + extension.code + '/'"
+      :to="extensionUrl(extension)"
     >
       <q-item-section side>
         <q-avatar size="md">
-          <q-img :src="extension.tile" style="max-width: 20px"></q-img>
+          <img
+            v-if="extension.tile"
+            :src="extension.tile"
+            style="width: 20px; height: 20px; object-fit: contain"
+          />
+          <q-icon v-else name="extension" size="20px"></q-icon>
         </q-avatar>
       </q-item-section>
       <q-item-section>
@@ -32,10 +37,7 @@
           ><span v-text="extension.name"></span>
         </q-item-label>
       </q-item-section>
-      <q-item-section
-        side
-        v-show="$route.path.startsWith('/' + extension.code)"
-      >
+      <q-item-section side v-show="extensionActive(extension)">
         <q-icon name="chevron_right" color="grey-5" size="md"></q-icon>
       </q-item-section>
     </q-item>

lnbits/templates/pages/extensions.vue

@@ -314,7 +314,7 @@
                 flat
                 color="primary"
                 type="a"
-                :href="extension.id + '/'"
+                :href="extensionOpenUrl(extension)"
                 :label="$t('open')"
               ></q-btn>
               <q-btn
@@ -455,8 +455,49 @@
     </q-card>
   </q-dialog>
 
-  <q-dialog v-model="showManageExtensionDialog" position="top">
-    <q-card v-if="selectedRelease" class="q-pa-lg lnbits__dialog-card">
+  <q-dialog
+    v-model="showManageExtensionDialog"
+    position="top"
+    @hide="onManageExtensionDialogHide"
+  >
+    <q-card v-if="permissionGrant.show" class="q-pa-md lnbits__dialog-card">
+      <q-card-section>
+        <div class="text-h6" v-text="$t('extension_permissions_title')"></div>
+        <q-banner
+          v-if="permissionGrantHasHighRisk()"
+          dense
+          class="bg-red-1 text-red-10 q-mt-md"
+        >
+          <template v-slot:avatar>
+            <q-icon name="warning" color="negative"></q-icon>
+          </template>
+          <span v-text="$t('extension_permissions_high_risk_warning')"></span>
+        </q-banner>
+      </q-card-section>
+
+      <lnbits-extension-permissions
+        class="q-mt-md"
+        :permissions="permissionGrant.permissions"
+        :extensions="extensions"
+      ></lnbits-extension-permissions>
+
+      <div class="row q-mt-lg">
+        <q-btn
+          flat
+          color="grey"
+          v-text="$t('cancel')"
+          @click="cancelExtensionPermissions"
+        ></q-btn>
+        <q-btn
+          flat
+          color="primary"
+          class="q-ml-auto"
+          v-text="$t('extension_permissions_grant_install')"
+          @click="grantExtensionPermissions"
+        ></q-btn>
+      </div>
+    </q-card>
+    <q-card v-else-if="selectedRelease" class="q-pa-lg lnbits__dialog-card">
       <q-card-section>
         <div v-if="selectedRelease.paymentRequest">
           <lnbits-qrcode

lnbits/templates/wasm_extension.html

@@ -0,0 +1 @@
+{% extends "base.html" %}

package.json

@@ -143,6 +143,7 @@
       "js/components/lnbits-theme.js",
       "js/components/lnbits-qrcode-scanner.js",
       "js/components/lnbits-manage-extension-list.js",
+      "js/components/lnbits-extension-permissions.js",
       "js/components/lnbits-manage-wallet-list.js",
       "js/components/lnbits-language-dropdown.js",
       "js/components/lnbits-payment-list.js",
@@ -150,6 +151,7 @@
       "js/components/extension-settings.js",
       "js/components/data-fields.js",
       "js/components.js",
+      "js/wasm-extension-component.js",
       "js/init-app.js"
     ],
     "css": [

poetry.lock

@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.2.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.4.1 and should not be changed by hand.
 
 [[package]]
 name = "aiohappyeyeballs"
@@ -2147,7 +2147,7 @@ files = [
 
 [package.dependencies]
 attrs = ">=22.2.0"
-jsonschema-specifications = ">=2023.03.6"
+jsonschema-specifications = ">=2023.3.6"
 referencing = ">=0.28.4"
 rpds-py = ">=0.25.0"
 
@@ -2308,7 +2308,7 @@ colorama = {version = ">=0.3.4", markers = "sys_platform == \"win32\""}
 win32-setctime = {version = ">=1.0.0", markers = "sys_platform == \"win32\""}
 
 [package.extras]
-dev = ["Sphinx (==8.1.3) ; python_version >= \"3.11\"", "build (==1.2.2) ; python_version >= \"3.11\"", "colorama (==0.4.5) ; python_version < \"3.8\"", "colorama (==0.4.6) ; python_version >= \"3.8\"", "exceptiongroup (==1.1.3) ; python_version >= \"3.7\" and python_version < \"3.11\"", "freezegun (==1.1.0) ; python_version < \"3.8\"", "freezegun (==1.5.0) ; python_version >= \"3.8\"", "mypy (==v0.910) ; python_version < \"3.6\"", "mypy (==v0.971) ; python_version == \"3.6\"", "mypy (==v1.13.0) ; python_version >= \"3.8\"", "mypy (==v1.4.1) ; python_version == \"3.7\"", "myst-parser (==4.0.0) ; python_version >= \"3.11\"", "pre-commit (==4.0.1) ; python_version >= \"3.9\"", "pytest (==6.1.2) ; python_version < \"3.8\"", "pytest (==8.3.2) ; python_version >= \"3.8\"", "pytest-cov (==2.12.1) ; python_version < \"3.8\"", "pytest-cov (==5.0.0) ; python_version == \"3.8\"", "pytest-cov (==6.0.0) ; python_version >= \"3.9\"", "pytest-mypy-plugins (==1.9.3) ; python_version >= \"3.6\" and python_version < \"3.8\"", "pytest-mypy-plugins (==3.1.0) ; python_version >= \"3.8\"", "sphinx-rtd-theme (==3.0.2) ; python_version >= \"3.11\"", "tox (==3.27.1) ; python_version < \"3.8\"", "tox (==4.23.2) ; python_version >= \"3.8\"", "twine (==6.0.1) ; python_version >= \"3.11\""]
+dev = ["Sphinx (==8.1.3) ; python_version >= \"3.11\"", "build (==1.2.2) ; python_version >= \"3.11\"", "colorama (==0.4.5) ; python_version < \"3.8\"", "colorama (==0.4.6) ; python_version >= \"3.8\"", "exceptiongroup (==1.1.3) ; python_version >= \"3.7\" and python_version < \"3.11\"", "freezegun (==1.1.0) ; python_version < \"3.8\"", "freezegun (==1.5.0) ; python_version >= \"3.8\"", "mypy (==0.910) ; python_version < \"3.6\"", "mypy (==0.971) ; python_version == \"3.6\"", "mypy (==1.13.0) ; python_version >= \"3.8\"", "mypy (==1.4.1) ; python_version == \"3.7\"", "myst-parser (==4.0.0) ; python_version >= \"3.11\"", "pre-commit (==4.0.1) ; python_version >= \"3.9\"", "pytest (==6.1.2) ; python_version < \"3.8\"", "pytest (==8.3.2) ; python_version >= \"3.8\"", "pytest-cov (==2.12.1) ; python_version < \"3.8\"", "pytest-cov (==5.0.0) ; python_version == \"3.8\"", "pytest-cov (==6.0.0) ; python_version >= \"3.9\"", "pytest-mypy-plugins (==1.9.3) ; python_version >= \"3.6\" and python_version < \"3.8\"", "pytest-mypy-plugins (==3.1.0) ; python_version >= \"3.8\"", "sphinx-rtd-theme (==3.0.2) ; python_version >= \"3.11\"", "tox (==3.27.1) ; python_version < \"3.8\"", "tox (==4.23.2) ; python_version >= \"3.8\"", "twine (==6.0.1) ; python_version >= \"3.11\""]
 
 [[package]]
 name = "markdown-it-py"
@@ -4739,6 +4739,31 @@ files = [
     {file = "wallycore-1.5.2.tar.gz", hash = "sha256:352b7b215046d4fd0333a82dc4b3936b749e5b9ae22a078b991a6b10712b3748"},
 ]
 
+[[package]]
+name = "wasmtime"
+version = "46.0.1"
+description = "A WebAssembly runtime powered by Wasmtime"
+optional = false
+python-versions = ">=3.9"
+groups = ["main"]
+files = [
+    {file = "wasmtime-46.0.1-py3-none-android_26_arm64_v8a.whl", hash = "sha256:cc8d52f9ad3bedc1e4de5002f7b22d7cac400be046711d177f6ce20a11eacb31"},
+    {file = "wasmtime-46.0.1-py3-none-android_26_x86_64.whl", hash = "sha256:f8e4b0ec402b84b856d3c6c2f96c6e6889c56e685b5cfed0a4040775c751ca38"},
+    {file = "wasmtime-46.0.1-py3-none-any.whl", hash = "sha256:85a092a63c20ccecb965b9aa12a19368d2e06203436d19701068efc390efa678"},
+    {file = "wasmtime-46.0.1-py3-none-macosx_10_13_x86_64.whl", hash = "sha256:9b46c546bf73ece2600403db7dc604c3ef12046ccf2fabe07d7bfaa00453ce8b"},
+    {file = "wasmtime-46.0.1-py3-none-macosx_11_0_arm64.whl", hash = "sha256:de1a69573a173b5171f9413bcf0b88f4fed2721ed02c842fc25de5358730ccdf"},
+    {file = "wasmtime-46.0.1-py3-none-manylinux1_x86_64.whl", hash = "sha256:e53c65abe31aeeb19a3f794b6e53140d401c4c79ad91c89caefdc502ee2b10c1"},
+    {file = "wasmtime-46.0.1-py3-none-manylinux2014_aarch64.whl", hash = "sha256:841b53fc17eedabaa6deb1e062a04a0a8953908d540fadb4149bc55c3f6d3e50"},
+    {file = "wasmtime-46.0.1-py3-none-musllinux_1_2_aarch64.whl", hash = "sha256:f295d10012b6ca6ecffa7757eed70b84ebaa2e33dc39275e7b6bed5eed5130b9"},
+    {file = "wasmtime-46.0.1-py3-none-musllinux_1_2_x86_64.whl", hash = "sha256:05fc65164b4825bf1c3c8f007df070b25accc974cb81d0bfc1c5d76fdf6f70e0"},
+    {file = "wasmtime-46.0.1-py3-none-win_amd64.whl", hash = "sha256:559b0753e3ea311fd16000fe51c08592a625e61ebb8640601ae7173fc516e430"},
+    {file = "wasmtime-46.0.1-py3-none-win_arm64.whl", hash = "sha256:967625406fde8fc3c9d795ffbb7bdde77d0a38de776e8eb7a0416ca6d811a27a"},
+    {file = "wasmtime-46.0.1.tar.gz", hash = "sha256:0da0388c21bc0f0e633c7a30f2b7939a657f5019258c9a3a63fd37298a0dbb8b"},
+]
+
+[package.extras]
+testing = ["coverage", "pycparser", "pytest", "pytest-mypy"]
+
 [[package]]
 name = "websocket-client"
 version = "1.9.0"
@@ -5123,4 +5148,4 @@ migration = ["psycopg2-binary"]
 [metadata]
 lock-version = "2.1"
 python-versions = ">=3.10,<3.13"
-content-hash = "7c70bdad0089089d383cf8f54c37c4473180cea175689b91322beaed1ab42e94"
+content-hash = "3097673d0cd279b0bf2b8fa59c1e523273f63d430f2c68ccc268a3cf232068af"

pyproject.toml

@@ -53,6 +53,7 @@ dependencies = [
     "greenlet~=3.3.0",
     "urllib3>=2.7.0",
     "pyinstrument>=5.1.2",
+    "wasmtime>=45.0.0",
 ]
 
 [project.scripts]

tools/codegen/extension_sdk_typescript.py

@@ -0,0 +1,368 @@
+from __future__ import annotations
+
+import argparse
+import re
+from collections import defaultdict
+from collections.abc import Sequence
+from pathlib import Path
+from types import UnionType
+from typing import Any, Literal, Union, get_args, get_origin
+
+from pydantic import BaseModel
+
+from lnbits.core.wasm_ext import (
+    ExtensionAPIMethod,
+    ExtensionHostAPI,
+    get_extension_api_method,
+    list_extension_api_methods,
+)
+
+
+def generate_typescript_sdk(
+    api_cls: type[ExtensionHostAPI] | None = None,
+    method_ids: Sequence[str] | None = None,
+) -> str:
+    api_cls = api_cls or ExtensionHostAPI
+    methods = _select_methods(api_cls, method_ids)
+    models = _collect_models(methods)
+
+    lines = [
+        "/* Generated by LNbits ExtensionHostAPI codegen. */",
+        "/* Do not edit by hand. */",
+        "",
+        "export type MaybePromise<T> = T | Promise<T>",
+        "",
+    ]
+
+    for model in models:
+        lines.extend(_render_model_type(model))
+        lines.append("")
+
+    lines.extend(_render_method_metadata(methods))
+    lines.append("")
+    lines.extend(_render_host_type(methods))
+    lines.append("")
+    lines.extend(_render_sdk_type(methods))
+    lines.append("")
+
+    lines.extend(_render_create_sdk(methods))
+
+    return "\n".join(lines).rstrip() + "\n"
+
+
+def write_typescript_sdk(
+    path: str | Path,
+    api_cls: type[ExtensionHostAPI] | None = None,
+    method_ids: Sequence[str] | None = None,
+) -> None:
+    Path(path).write_text(
+        generate_typescript_sdk(api_cls, method_ids), encoding="utf-8"
+    )
+
+
+def _select_methods(
+    api_cls: type[ExtensionHostAPI], method_ids: Sequence[str] | None
+) -> list[ExtensionAPIMethod]:
+    if not method_ids:
+        return list_extension_api_methods(api_cls)
+    return [get_extension_api_method(method_id, api_cls) for method_id in method_ids]
+
+
+def _collect_models(methods: Sequence[ExtensionAPIMethod]) -> list[type[BaseModel]]:
+    models: dict[str, type[BaseModel]] = {}
+    pending = [
+        model
+        for method in methods
+        for model in (method.request_model, method.response_model)
+    ]
+
+    while pending:
+        model = pending.pop()
+        if model.__name__ in models:
+            continue
+        models[model.__name__] = model
+        for field in model.__fields__.values():
+            pending.extend(_nested_model_types(field.outer_type_))
+    return [models[name] for name in sorted(models)]
+
+
+def _nested_model_types(type_: Any) -> list[type[BaseModel]]:
+    models: list[type[BaseModel]] = []
+    if _is_model_type(type_):
+        models.append(type_)
+    for arg in get_args(type_):
+        models.extend(_nested_model_types(arg))
+    return models
+
+
+def _render_model_type(model: type[BaseModel]) -> list[str]:
+    name = _model_name(model)
+    fields = model.__fields__
+    if not fields:
+        return [f"export type {name} = Record<string, never>"]
+
+    lines = [f"export type {name} = {{"]
+    for field_name, field in fields.items():
+        optional = "?" if not field.required else ""
+        ts_type = _python_type_to_ts(field.outer_type_, field.allow_none)
+        lines.append(f"  {_camel(field_name)}{optional}: {ts_type}")
+    lines.append("}")
+    return lines
+
+
+def _python_type_to_ts(type_: Any, allow_none: bool = False) -> str:
+    origin = get_origin(type_)
+    args = get_args(type_)
+
+    if origin in (UnionType, Union):
+        ts = " | ".join(
+            _python_type_to_ts(arg) for arg in args if arg is not type(None)
+        )
+        if type(None) in args:
+            ts = f"{ts} | null"
+        return ts
+
+    if origin is Literal:
+        return " | ".join(_literal_to_ts(arg) for arg in args)
+
+    if _is_model_type(type_):
+        ts = _model_name(type_)
+    elif origin in (list, Sequence):
+        item_type = _python_type_to_ts(args[0]) if args else "unknown"
+        ts = f"{item_type}[]"
+    elif origin is dict:
+        key_type = _python_type_to_ts(args[0]) if args else "string"
+        value_type = _python_type_to_ts(args[1]) if len(args) > 1 else "unknown"
+        ts = (
+            f"Record<{key_type}, {value_type}>"
+            if key_type == "string"
+            else f"{{ [key: string]: {value_type} }}"
+        )
+    elif _is_subclass(type_, str):
+        ts = "string"
+    elif _is_subclass(type_, bool):
+        ts = "boolean"
+    elif _is_subclass(type_, int) or _is_subclass(type_, float):
+        ts = "number"
+    else:
+        ts = "unknown"
+
+    return f"{ts} | null" if allow_none else ts
+
+
+def _literal_to_ts(value: Any) -> str:
+    if isinstance(value, str):
+        return f'"{value}"'
+    if isinstance(value, bool):
+        return "true" if value else "false"
+    if value is None:
+        return "null"
+    return str(value)
+
+
+def _is_subclass(type_: Any, class_: type) -> bool:
+    try:
+        return isinstance(type_, type) and issubclass(type_, class_)
+    except TypeError:
+        return False
+
+
+def _is_model_type(type_: Any) -> bool:
+    return _is_subclass(type_, BaseModel)
+
+
+def _render_method_metadata(
+    methods: Sequence[ExtensionAPIMethod],
+) -> list[str]:
+    lines = ["export const extensionApiMethods = ["]
+    for method in methods:
+        permission = (
+            f'"{method.required_permission}"' if method.required_permission else "null"
+        )
+        lines.extend(
+            [
+                "  {",
+                f'    id: "{method.method_id}",',
+                f'    namespace: "{method.namespace}",',
+                f'    sdkName: "{method.sdk_name}",',
+                f'    pythonName: "{method.python_name}",',
+                f'    hostInterface: "{method.host_interface}",',
+                f'    hostName: "{method.host_name}",',
+                f'    hostJsName: "{_camel(method.host_name)}",',
+                f"    requiredPermission: {permission},",
+                "  },",
+            ]
+        )
+    lines.append("] as const")
+    return lines
+
+
+def _render_host_type(methods: Sequence[ExtensionAPIMethod]) -> list[str]:
+    lines = ["export type ExtensionHost = {"]
+    for host_interface, interface_methods in _methods_by_host_interface(
+        methods
+    ).items():
+        lines.append(f"  {_ts_property(host_interface)}: {{")
+        for method in sorted(interface_methods, key=lambda item: item.host_name):
+            request = _model_name(method.request_model)
+            response = _model_name(method.response_model)
+            if _is_empty_model(method.request_model):
+                lines.append(
+                    f"    {_camel(method.host_name)}(): MaybePromise<{response}>"
+                )
+            else:
+                lines.append(
+                    f"    {_camel(method.host_name)}"
+                    f"(input: {request}): MaybePromise<{response}>"
+                )
+        lines.append("  }")
+    lines.append("}")
+    return lines
+
+
+def _render_sdk_type(methods: Sequence[ExtensionAPIMethod]) -> list[str]:
+    lines = ["export type ExtensionSdk = {"]
+    _render_sdk_type_node(lines, _namespace_tree(methods), 1)
+    lines.append("}")
+    return lines
+
+
+def _render_create_sdk(methods: Sequence[ExtensionAPIMethod]) -> list[str]:
+    lines = [
+        "export function createExtensionSdk(",
+        "  host: ExtensionHost",
+        "): ExtensionSdk {",
+        "  return {",
+    ]
+    _render_create_sdk_node(lines, _namespace_tree(methods), 2)
+    lines.extend(["  }", "}"])
+    return lines
+
+
+def _render_sdk_type_node(lines: list[str], node: dict[str, Any], level: int) -> None:
+    indent = "  " * level
+    for namespace, child in _iter_child_namespaces(node):
+        lines.append(f"{indent}{namespace}: {{")
+        _render_sdk_type_node(lines, child, level + 1)
+        lines.append(f"{indent}}}")
+
+    for method in node.get("__methods__", []):
+        request = _model_name(method.request_model)
+        response = _model_name(method.response_model)
+        if _is_empty_model(method.request_model):
+            lines.append(f"{indent}{method.sdk_name}(): Promise<{response}>")
+        else:
+            lines.append(
+                f"{indent}{method.sdk_name}(input: {request}): Promise<{response}>"
+            )
+
+
+def _render_create_sdk_node(lines: list[str], node: dict[str, Any], level: int) -> None:
+    indent = "  " * level
+    for namespace, child in _iter_child_namespaces(node):
+        lines.append(f"{indent}{namespace}: {{")
+        _render_create_sdk_node(lines, child, level + 1)
+        lines.append(f"{indent}}},")
+
+    for method in node.get("__methods__", []):
+        host_call_target = (
+            f"host{_ts_access(method.host_interface)}"
+            f"{_ts_access(_camel(method.host_name))}"
+        )
+        if _is_empty_model(method.request_model):
+            signature = f"{method.sdk_name}()"
+            host_call = f"{host_call_target}()"
+        else:
+            signature = f"{method.sdk_name}(input)"
+            host_call = f"{host_call_target}(input)"
+        lines.extend(
+            [
+                f"{indent}async {signature} {{",
+                f"{indent}  return {host_call}",
+                f"{indent}}},",
+            ]
+        )
+
+
+def _methods_by_host_interface(
+    methods: Sequence[ExtensionAPIMethod],
+) -> dict[str, list[ExtensionAPIMethod]]:
+    interfaces: dict[str, list[ExtensionAPIMethod]] = defaultdict(list)
+    for method in sorted(
+        methods, key=lambda item: (item.host_interface, item.host_name)
+    ):
+        interfaces[method.host_interface].append(method)
+    return dict(sorted(interfaces.items()))
+
+
+def _namespace_tree(methods: Sequence[ExtensionAPIMethod]) -> dict[str, Any]:
+    tree: dict[str, Any] = {}
+    for method in sorted(methods, key=lambda item: (item.namespace, item.sdk_name)):
+        node = tree
+        for part in method.namespace.split("."):
+            node = node.setdefault(part, {})
+        node.setdefault("__methods__", []).append(method)
+    return tree
+
+
+def _iter_child_namespaces(
+    node: dict[str, Any],
+) -> list[tuple[str, dict[str, Any]]]:
+    return [
+        (key, value)
+        for key, value in sorted(node.items())
+        if key != "__methods__" and isinstance(value, dict)
+    ]
+
+
+def _model_name(model: type[BaseModel]) -> str:
+    return model.__name__
+
+
+def _camel(value: str) -> str:
+    head, *tail = value.split("_")
+    return head + "".join(part.capitalize() for part in tail)
+
+
+def _ts_property(value: str) -> str:
+    if re.match(r"^[A-Za-z_$][A-Za-z0-9_$]*$", value):
+        return value
+    return f'"{value}"'
+
+
+def _ts_access(value: str) -> str:
+    if re.match(r"^[A-Za-z_$][A-Za-z0-9_$]*$", value):
+        return f".{value}"
+    return f'["{value}"]'
+
+
+def _is_empty_model(model: type[BaseModel]) -> bool:
+    return not model.__fields__
+
+
+def main(argv: Sequence[str] | None = None) -> int:
+    parser = argparse.ArgumentParser(
+        description="Generate a TypeScript SDK from the LNbits ExtensionHostAPI."
+    )
+    parser.add_argument(
+        "--method",
+        action="append",
+        dest="method_ids",
+        help="ExtensionHostAPI method id to include. Can be passed multiple times.",
+    )
+    parser.add_argument(
+        "--out",
+        help="Output file. If omitted, the generated SDK is printed to stdout.",
+    )
+    args = parser.parse_args(argv)
+
+    sdk = generate_typescript_sdk(method_ids=args.method_ids)
+    if args.out:
+        Path(args.out).write_text(sdk, encoding="utf-8")
+    else:
+        print(sdk, end="")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

uv.lock

@@ -1333,6 +1333,7 @@ dependencies = [
     { name = "urllib3" },
     { name = "uvicorn" },
     { name = "uvloop" },
+    { name = "wasmtime" },
     { name = "websocket-client" },
     { name = "websockets" },
 ]
@@ -1422,6 +1423,7 @@ requires-dist = [
     { name = "uvicorn", specifier = "~=0.40.0" },
     { name = "uvloop", specifier = "~=0.22.1" },
     { name = "wallycore", marker = "extra == 'liquid'", specifier = "~=1.5.1" },
+    { name = "wasmtime", specifier = ">=45.0.0" },
     { name = "websocket-client", specifier = "~=1.9.0" },
     { name = "websockets", specifier = "~=15.0.1" },
 ]
@@ -2858,6 +2860,25 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/41/e5/1c1d2979d074cba4f0a1516f2bf4c3ee66067b6ba3b96e5cb4460555d474/wallycore-1.5.3-cp312-cp312-win_amd64.whl", hash = "sha256:c3343a1df11a7ef4572521e002f4550a0157aea2c749dcfd9be62fb5babe0d03", size = 1728038, upload-time = "2026-04-15T22:04:36.434Z" },
 ]
 
+[[package]]
+name = "wasmtime"
+version = "45.0.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/b1/ff/db9cfc61d988bc15303134bb174176a29839976876dfd18c3a12548ad291/wasmtime-45.0.0.tar.gz", hash = "sha256:2ad4bf7ca286ceea35c1e420d10b368d7f83faf9a5ffde87b4ee334a9b7f55f3", size = 128297, upload-time = "2026-05-26T17:57:39.131Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/75/56/7d941adba273210dcf4198266a47f472a5eeca20172005b443af71a9a3e7/wasmtime-45.0.0-py3-none-android_26_arm64_v8a.whl", hash = "sha256:4e843795b53e66c71313f2254731467372e5e1549227cf14accb9e2d57701c10", size = 8659052, upload-time = "2026-05-26T17:57:12.338Z" },
+    { url = "https://files.pythonhosted.org/packages/3f/81/c4d81ebf3db8aa28f789a9569640f30790d5234c509a0234cd502aa2638b/wasmtime-45.0.0-py3-none-android_26_x86_64.whl", hash = "sha256:35e713f907264e470f3bc9b592b81b8ed0f8f5651725d9f07a5d52beb0642e38", size = 9619373, upload-time = "2026-05-26T17:57:14.979Z" },
+    { url = "https://files.pythonhosted.org/packages/e1/c7/7594da7fa8a3bc5e765733ad57aac9b7b27262c4afa47521bd500e4a4574/wasmtime-45.0.0-py3-none-any.whl", hash = "sha256:6251ee5074a8b8bfaa98e6e99cb5d49d6d0f2320b3265d5aa6c2ee5df5fb4519", size = 8019034, upload-time = "2026-05-26T17:57:20.138Z" },
+    { url = "https://files.pythonhosted.org/packages/75/76/7d0e440ca03a717a97889dbb7b68f952c20ed4ffd3f59addf9553579e1d5/wasmtime-45.0.0-py3-none-macosx_10_13_x86_64.whl", hash = "sha256:3579b0ec6d001750d66ec7089aaeee2c048f88328c82743e15f099af01b0cf84", size = 9401625, upload-time = "2026-05-26T17:57:22.149Z" },
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+    { url = "https://files.pythonhosted.org/packages/d7/8c/e9019a28e908214031310aefd78e4755221d02303190b54b2c85cb69573e/wasmtime-45.0.0-py3-none-manylinux1_x86_64.whl", hash = "sha256:5d1416ec6da8cd87c29e2e9eb074358c91839c2fff971fe428c8921eaae68e73", size = 9681185, upload-time = "2026-05-26T17:57:26.641Z" },
+    { url = "https://files.pythonhosted.org/packages/42/56/ed5f492bd553a31c8e28d621f8256f2c7b1a133b28f73525d96ca355891a/wasmtime-45.0.0-py3-none-manylinux2014_aarch64.whl", hash = "sha256:a499f6ab0eebb70dca83d6a4904b743cd122f322af3abe86af08ad753533d946", size = 8582001, upload-time = "2026-05-26T17:57:28.883Z" },
+    { url = "https://files.pythonhosted.org/packages/62/12/9b41740da83f51014b88181c9086de0ed75d736a5329baff7323c4fb6eff/wasmtime-45.0.0-py3-none-musllinux_1_2_aarch64.whl", hash = "sha256:bef65282b7de744106a91da43e4d06ba19d2d587bc54abb83b3e757f0c4fc030", size = 8633462, upload-time = "2026-05-26T17:57:31.423Z" },
+    { url = "https://files.pythonhosted.org/packages/ea/63/49d8317706a108d9ed1d4166d0fc710796da1b20e591a98a96575dec367a/wasmtime-45.0.0-py3-none-musllinux_1_2_x86_64.whl", hash = "sha256:a0b6ca14b4628a5d1ffa91ccf2c0f2c58fa171f126ec085d564b09d5795395dd", size = 9712524, upload-time = "2026-05-26T17:57:33.839Z" },
+    { url = "https://files.pythonhosted.org/packages/20/71/8e31ea472ceb934e7261ac59a786e82cd82b4d4dcb7c870d498aa9c3c21e/wasmtime-45.0.0-py3-none-win_amd64.whl", hash = "sha256:1736a70a48f713aaf1a878514d29cc6f554213b5431e04447813a3b9b4320381", size = 8019039, upload-time = "2026-05-26T17:57:36.04Z" },
+    { url = "https://files.pythonhosted.org/packages/9c/d1/ac536e92ac95a02e137be5b6829f15b87d5eef93ace32e5ee8035155b839/wasmtime-45.0.0-py3-none-win_arm64.whl", hash = "sha256:ae9726590e6d90c6305b8b507c93468b145204d4390aa9a2e29e26babcae110e", size = 6845659, upload-time = "2026-05-26T17:57:37.696Z" },
+]
+
 [[package]]
 name = "websocket-client"
 version = "1.9.0"