feat: authenticate API tokens and enforce route ACLs

README.md

@@ -55,6 +55,14 @@ print(proxmox.version.get())
 print(proxmox.nodes("pve1").qemu.get())
 ```
 
+The deterministic seed also provides hashed development API tokens. For token
+authentication use proxmoxer `token_name="automation"` and
+`token_value="automation-secret"` with user `root@pam`. The readonly
+`auditor@pve!readonly` token proves privilege separation: authenticated reads
+work, while QEMU power operations return 403. API-token requests do not require
+CSRF; ticket-authenticated mutations still do. These are disposable local test
+credentials only.
+
 Run the external-client smoke flow against the Compose network with
 `PROXMOXER_HOST=tls-gateway`, `PROXMOXER_PORT=8443`, and pytest marker
 `compatibility`. It covers login, reads, CSRF-protected mutation, and UPID task

app/api/registry.py

@@ -13,7 +13,9 @@ from fastapi.responses import JSONResponse
 from app.api.errors import ApiError, ContractValidationError
 from app.config import Settings
 from app.contracts.model import Method, Schema, Snapshot
-from app.security.auth import verify_csrf, verify_ticket
+from app.db.pool import AsyncpgDatabase
+from app.security.acl import AclEntry, authorize, requirement_from_contract
+from app.security.auth import parse_api_token, verify_csrf, verify_secret, verify_ticket
 
 Handler = Callable[[Request, dict[str, Any]], Awaitable[Any]]
 FallbackMode = Literal["error", "schema-default", "fixture"]
@@ -81,9 +83,9 @@ def _endpoint(
     fallback: FallbackMode,
 ) -> Callable[[Request], Awaitable[JSONResponse]]:
     async def dispatch(request: Request) -> JSONResponse:
-        _authenticate(request, semantic_path)
-        handler = handlers.get(semantic_path, method.verb)
         inputs = await _parse_inputs(request, method)
+        await _authenticate(request, semantic_path, method, inputs)
+        handler = handlers.get(semantic_path, method.verb)
         if handler is not None:
             data = await handler(request, inputs)
         elif fallback == "schema-default":
@@ -108,22 +110,90 @@ def _endpoint(
     return dispatch
 
 
-def _authenticate(request: Request, semantic_path: str) -> None:
+async def _authenticate(
+    request: Request, semantic_path: str, method: Method, inputs: dict[str, Any]
+) -> None:
     if semantic_path in {"/version", "/access/ticket"}:
         return
+    authorization = request.headers.get("Authorization", "")
+    token_privileges: frozenset[str] | None = None
+    principal: str
+    if authorization.startswith("PVEAPIToken="):
+        database = cast(AsyncpgDatabase, request.app.state.database)
+        try:
+            parsed_token = parse_api_token(authorization)
+        except ValueError as error:
+            raise ApiError(401, "authentication failure") from error
+        row = await database.pool.fetchrow(
+            """SELECT p.name, t.secret_hash, t.privileges
+            FROM api_tokens t JOIN principals p ON p.id=t.principal_id
+            WHERE p.name=$1 AND t.token_id=$2
+              AND (t.expires_at IS NULL OR t.expires_at > now())""",
+            parsed_token.principal,
+            parsed_token.token_id,
+        )
+        if row is None or not verify_secret(parsed_token.secret, str(row["secret_hash"])):
+            raise ApiError(401, "authentication failure")
+        principal = str(row["name"])
+        token_privileges = frozenset(str(item) for item in row["privileges"])
+    else:
         ticket = request.cookies.get("PVEAuthCookie")
         if ticket is None:
             raise ApiError(401, "authentication required")
         settings = cast(Settings, request.app.state.settings)
         key = settings.ticket_signing_key.get_secret_value().encode()
         try:
-        verify_ticket(ticket, key)
+            claims = verify_ticket(ticket, key)
         except ValueError as error:
             raise ApiError(401, "authentication failure") from error
+        principal = claims.principal
         if request.method not in {"GET", "HEAD", "OPTIONS"}:
-        token = request.headers.get("CSRFPreventionToken", "")
-        if not verify_csrf(ticket, token, key):
+            csrf_value = request.headers.get("CSRFPreventionToken", "")
+            if not verify_csrf(ticket, csrf_value, key):
                 raise ApiError(403, "invalid CSRF prevention token")
+    request.state.principal = principal
+    if principal == "root@pam" and token_privileges is None:
+        return
+    database = cast(AsyncpgDatabase, request.app.state.database)
+    await _authorize(database, principal, token_privileges, method, inputs)
+
+
+async def _authorize(
+    database: AsyncpgDatabase,
+    principal: str,
+    token_privileges: frozenset[str] | None,
+    method: Method,
+    inputs: dict[str, Any],
+) -> None:
+    values = cast(dict[str, Any], inputs["values"])
+    requirement = requirement_from_contract(
+        method.permissions, {name: str(value) for name, value in values.items()}
+    )
+    if requirement is None:
+        return
+    rows = await database.pool.fetch(
+        """SELECT a.path, a.propagate, r.privileges
+        FROM acl_entries a JOIN roles r ON r.name=a.role_name
+        JOIN principals p ON p.id=a.principal_id WHERE p.name=$1""",
+        principal,
+    )
+    entries = tuple(
+        AclEntry(
+            principal,
+            str(row["path"]),
+            frozenset(str(item) for item in row["privileges"]),
+            bool(row["propagate"]),
+        )
+        for row in rows
+    )
+    if not authorize(
+        principal,
+        requirement.path,
+        requirement.privileges,
+        entries,
+        token_privileges=token_privileges,
+    ):
+        raise ApiError(403, "permission check failed")
 
 
 async def _parse_inputs(request: Request, method: Method) -> dict[str, Any]:

app/simulation/seed.py

@@ -332,6 +332,46 @@ async def apply_seed(connection: Connection, profile: SeedProfile) -> None:
             stable_id("principal:root@pam"),
             hash_secret("secret", salt=b"pve-simulator-v1"),
         )
+        await connection.execute(
+            """INSERT INTO api_tokens(principal_id, token_id, secret_hash, privileges)
+            VALUES($1, 'automation', $2, $3)
+            ON CONFLICT (principal_id, token_id) DO UPDATE
+            SET secret_hash=EXCLUDED.secret_hash, privileges=EXCLUDED.privileges""",
+            stable_id("principal:root@pam"),
+            hash_secret("automation-secret", salt=b"pve-token-seed-v1"),
+            ["VM.Audit", "VM.PowerMgmt", "Sys.Audit"],
+        )
+        auditor_id = stable_id("principal:auditor@pve")
+        await connection.execute(
+            """INSERT INTO principals(id, name, password_hash, realm_name)
+            VALUES($1, 'auditor@pve', $2, 'pve')
+            ON CONFLICT (name) DO UPDATE SET password_hash=EXCLUDED.password_hash,
+            realm_name=EXCLUDED.realm_name""",
+            auditor_id,
+            hash_secret("auditor-secret", salt=b"pve-auditor-v1"),
+        )
+        await connection.execute(
+            """INSERT INTO roles(name, privileges)
+            VALUES('PVEAuditor', $1)
+            ON CONFLICT (name) DO UPDATE SET privileges=EXCLUDED.privileges""",
+            ["Sys.Audit", "VM.Audit"],
+        )
+        await connection.execute(
+            """INSERT INTO acl_entries(principal_id, role_name, path, propagate)
+            VALUES($1, 'PVEAuditor', '/', true)
+            ON CONFLICT (principal_id, role_name, path) DO UPDATE
+            SET propagate=EXCLUDED.propagate""",
+            auditor_id,
+        )
+        await connection.execute(
+            """INSERT INTO api_tokens(principal_id, token_id, secret_hash, privileges)
+            VALUES($1, 'readonly', $2, $3)
+            ON CONFLICT (principal_id, token_id) DO UPDATE
+            SET secret_hash=EXCLUDED.secret_hash, privileges=EXCLUDED.privileges""",
+            auditor_id,
+            hash_secret("readonly-secret", salt=b"pve-readonly-v1"),
+            ["Sys.Audit", "VM.Audit"],
+        )
 
 
 async def seed_url(

docs/compatibility-0.1.0.md

@@ -24,7 +24,9 @@ worker tests; a single smoke run chooses the transition valid for current state.
 - Core: version, ticket login, node list/status, and cluster resources.
 - QEMU: list, configuration, current status, start, and stop.
 - Tasks: node task list, status, and append-only log.
-- Authentication: ticket cookie and ticket-bound CSRF validation for mutations.
+- Authentication: ticket cookie and ticket-bound CSRF validation for mutations,
+  plus hashed API-token authentication without CSRF and token privilege
+  separation at the contract-derived ACL boundary.
 - Persistence: PostgreSQL resources, durable leased tasks, and deterministic
   `small` seed data.
 

tests/compatibility/test_proxmoxer.py

@@ -4,7 +4,7 @@ import os
 from threading import Event
 
 import pytest
-from proxmoxer import ProxmoxAPI  # type: ignore[import-untyped]
+from proxmoxer import ProxmoxAPI, ResourceException  # type: ignore[import-untyped]
 
 pytestmark = [
     pytest.mark.compatibility,
@@ -25,6 +25,29 @@ def test_proxmoxer_read_and_qemu_task_flow() -> None:
     assert any(node["node"] == "pve1" for node in proxmox.nodes.get())
     assert any(vm["vmid"] == 101 for vm in proxmox.nodes("pve1").qemu.get())
 
+    token_api = ProxmoxAPI(
+        os.environ["PROXMOXER_HOST"],
+        port=int(os.getenv("PROXMOXER_PORT", "8007")),
+        user="root@pam",
+        token_name=os.getenv("PROXMOXER_TOKEN_NAME", "automation"),
+        token_value=os.getenv("PROXMOXER_TOKEN_SECRET", "automation-secret"),
+        verify_ssl=False,
+    )
+    assert any(node["node"] == "pve1" for node in token_api.nodes.get())
+
+    readonly_api = ProxmoxAPI(
+        os.environ["PROXMOXER_HOST"],
+        port=int(os.getenv("PROXMOXER_PORT", "8007")),
+        user="auditor@pve",
+        token_name=os.getenv("PROXMOXER_READONLY_TOKEN_NAME", "readonly"),
+        token_value=os.getenv("PROXMOXER_READONLY_TOKEN_SECRET", "readonly-secret"),
+        verify_ssl=False,
+    )
+    assert readonly_api.nodes.get()
+    with pytest.raises(ResourceException) as denied:
+        readonly_api.nodes("pve1").qemu("101").status.start.post()
+    assert denied.value.status_code == 403
+
     if os.getenv("PROXMOXER_MUTATION_TEST") == "1":
         status = proxmox.nodes("pve1").qemu("101").status.current.get()
         operation = "start" if status["status"] == "stopped" else "stop"

tests/unit/test_api_auth_boundary.py

@@ -0,0 +1,105 @@
+"""HTTP-boundary API-token and contract permission tests."""
+
+from typing import Any, cast
+
+import pytest
+from fastapi import FastAPI, Request
+
+from app.api.errors import ApiError
+from app.api.registry import _authenticate
+from app.config import Settings
+from app.contracts.model import Method, Permissions, Schema
+from app.db.pool import AsyncpgDatabase
+from app.security.auth import hash_secret
+
+
+class FakePool:
+    def __init__(self, secret: str, token_privileges: list[str]) -> None:
+        self.secret_hash = hash_secret(secret, salt=b"boundary-token-v1")
+        self.token_privileges = token_privileges
+
+    async def fetchrow(self, _query: str, principal: str, token_id: str) -> dict[str, Any] | None:
+        if principal != "operator@pve" or token_id != "api":
+            return None
+        return {
+            "name": principal,
+            "secret_hash": self.secret_hash,
+            "privileges": self.token_privileges,
+        }
+
+    async def fetch(self, _query: str, principal: str) -> list[dict[str, Any]]:
+        return [
+            {
+                "path": "/vms",
+                "propagate": True,
+                "privileges": ["VM.Audit", "VM.PowerMgmt"],
+                "principal": principal,
+            }
+        ]
+
+
+class FakeDatabase:
+    def __init__(self, pool: FakePool) -> None:
+        self.pool = pool
+
+
+def token_request(secret: str, token_privileges: list[str]) -> Request:
+    app = FastAPI()
+    app.state.settings = Settings()
+    app.state.database = cast(AsyncpgDatabase, FakeDatabase(FakePool("valid", token_privileges)))
+    return Request(
+        {
+            "type": "http",
+            "app": app,
+            "method": "POST",
+            "path": "/api2/json/nodes/pve1/qemu/101/status/start",
+            "headers": [(b"authorization", f"PVEAPIToken=operator@pve!api={secret}".encode())],
+            "query_string": b"",
+            "server": ("test", 80),
+            "client": ("test", 123),
+            "scheme": "http",
+        }
+    )
+
+
+def power_method() -> Method:
+    return Method(
+        verb="POST",
+        name="start",
+        returns=Schema(type="string"),
+        permissions=Permissions(expression={"check": ["perm", "/vms/{vmid}", ["VM.PowerMgmt"]]}),
+        checksum="1" * 64,
+    )
+
+
+async def test_api_token_skips_csrf_but_honors_separated_privileges() -> None:
+    allowed = token_request("valid", ["VM.PowerMgmt"])
+    await _authenticate(
+        allowed,
+        "/nodes/{node}/qemu/{vmid}/status/start",
+        power_method(),
+        {"values": {"node": "pve1", "vmid": 101}},
+    )
+    assert allowed.state.principal == "operator@pve"
+
+    denied = token_request("valid", ["VM.Audit"])
+    with pytest.raises(ApiError) as error:
+        await _authenticate(
+            denied,
+            "/nodes/{node}/qemu/{vmid}/status/start",
+            power_method(),
+            {"values": {"node": "pve1", "vmid": 101}},
+        )
+    assert error.value.status_code == 403
+
+
+async def test_api_token_rejects_unknown_or_wrong_secret() -> None:
+    request = token_request("wrong", ["VM.PowerMgmt"])
+    with pytest.raises(ApiError) as error:
+        await _authenticate(
+            request,
+            "/nodes/{node}/qemu/{vmid}/status/start",
+            power_method(),
+            {"values": {"node": "pve1", "vmid": 101}},
+        )
+    assert error.value.status_code == 401