Update project description

.coveragerc

@@ -0,0 +1,36 @@
+[run]
+branch = True
+source =
+    src/sshecret
+    packages/sshecret-admin/src/sshecret_admin
+    packages/sshecret-backend/src/sshecret_backend
+    packages/sshecret-sshd/src/sshecret_sshd
+
+omit =
+    */__init__.py
+    */types.py
+    */testing.py
+    */settings.py
+    */main.py
+    */cli.py
+    */tests/*
+    */test_*.py
+    */conftest.py
+    */site-packages/*
+concurrency = multiprocessing
+
+[report]
+show_missing = True
+skip_covered = True
+
+exclude_lines =
+    if __name__ == .__main__.:
+    def __repr__
+    def __str__
+    def __eq__
+    def __ne__
+    raise NotImplementedError
+    except ImportError
+
+[html]
+directory = coverage_html_report

packages/sshecret-admin/src/sshecret_admin/api/endpoints/clients.py

@@ -21,7 +21,7 @@ LOG = logging.getLogger(__name__)
 
 def create_router(dependencies: AdminDependencies) -> APIRouter:
     """Create clients router."""
-    app = APIRouter()
+    app = APIRouter(dependencies=[Depends(dependencies.get_current_active_user)])
 
     @app.get("/clients/")
     async def get_clients(

packages/sshecret-admin/src/sshecret_admin/api/endpoints/secrets.py

@@ -19,7 +19,7 @@ LOG = logging.getLogger(__name__)
 
 def create_router(dependencies: AdminDependencies) -> APIRouter:
     """Create secrets router."""
-    app = APIRouter()
+    app = APIRouter(dependencies=[Depends(dependencies.get_current_active_user)])
 
     @app.get("/secrets/")
     async def get_secret_names(

packages/sshecret-admin/src/sshecret_admin/api/router.py

@@ -55,7 +55,9 @@ def create_router(dependencies: BaseDependencies) -> APIRouter:
             raise HTTPException(status_code=400, detail="Inactive or disabled user")
         return current_user
 
-    async def get_admin_backend(session: Annotated[Session, Depends(dependencies.get_db_session)]):
+    async def get_admin_backend(
+        session: Annotated[Session, Depends(dependencies.get_db_session)]
+    ):
         """Get admin backend API."""
         password_db = session.exec(select(PasswordDB).where(PasswordDB.id == 1)).first()
         if not password_db:
@@ -65,11 +67,13 @@ def create_router(dependencies: BaseDependencies) -> APIRouter:
         admin = AdminBackend(dependencies.settings, password_db.encrypted_password)
         yield admin
 
-    app = APIRouter(
-        prefix=f"/api/{API_VERSION}", dependencies=[Depends(get_current_active_user)]
+    app = APIRouter(prefix=f"/api/{API_VERSION}")
+
+    endpoint_deps = AdminDependencies.create(
+        dependencies, get_admin_backend, get_current_active_user
     )
 
-    endpoint_deps = AdminDependencies.create(dependencies, get_admin_backend)
+    LOG.debug("Registering sub-routers")
 
     app.include_router(auth.create_router(endpoint_deps))
     app.include_router(clients.create_router(endpoint_deps))

packages/sshecret-admin/src/sshecret_admin/auth/authentication.py

@@ -93,3 +93,9 @@ def decode_token(settings: AdminServerSettings, token: str) -> TokenData | None:
     except jwt.InvalidTokenError as e:
         LOG.debug("Could not decode token: %s", e, exc_info=True)
         return None
+
+def hash_password(password: str) -> str:
+    """Hash password."""
+    salt = bcrypt.gensalt()
+    hashed_password = bcrypt.hashpw(password.encode(), salt)
+    return hashed_password.decode()

packages/sshecret-admin/src/sshecret_admin/auth/models.py

@@ -46,10 +46,6 @@ class PasswordDB(SQLModel, table=True):
     )
 
 
-def init_db(engine: sa.Engine) -> None:
-    """Create database."""
-    SQLModel.metadata.create_all(engine)
-
 
 class TokenData(SQLModel):
     """Token data."""
@@ -69,3 +65,6 @@ class LoginError(SQLModel):
     title: str
     message: str
 
+def init_db(engine: sa.Engine) -> None:
+    """Create database."""
+    SQLModel.metadata.create_all(engine)

packages/sshecret-admin/src/sshecret_admin/core/cli.py

@@ -5,13 +5,13 @@ import code
 from collections.abc import Awaitable
 import logging
 from typing import Any, cast
-import bcrypt
 import click
 from sshecret_admin.services.admin_backend import AdminBackend
 import uvicorn
 from pydantic import ValidationError
 from sqlmodel import Session, create_engine, select
 from sshecret_admin.auth.models import init_db, User, PasswordDB
+from sshecret_admin.auth.authentication import hash_password
 from sshecret_admin.core.settings import AdminServerSettings
 
 handler = logging.StreamHandler()
@@ -19,17 +19,6 @@ formatter = logging.Formatter(
     "%(asctime)s [%(processName)s: %(process)d] [%(threadName)s: %(thread)d] [%(levelname)s] %(name)s: %(message)s"
 )
 handler.setFormatter(formatter)
-LOG = logging.getLogger()
-LOG.addHandler(handler)
-LOG.setLevel(logging.INFO)
-
-
-def hash_password(password: str) -> str:
-    """Hash password."""
-    salt = bcrypt.gensalt()
-    hashed_password = bcrypt.hashpw(password.encode(), salt)
-    return hashed_password.decode()
-
 
 def create_user(session: Session, username: str, password: str) -> None:
     """Create a user."""
@@ -44,8 +33,14 @@ def create_user(session: Session, username: str, password: str) -> None:
 @click.pass_context
 def cli(ctx: click.Context, debug: bool) -> None:
     """Sshecret Admin."""
+    LOG = logging.getLogger()
+    LOG.addHandler(handler)
+
     if debug:
+        click.echo("Setting logging to debug level")
         LOG.setLevel(logging.DEBUG)
+    else:
+        LOG.setLevel(logging.INFO)
     try:
         settings = AdminServerSettings()  # pyright: ignore[reportCallIssue]
     except ValidationError as e:

packages/sshecret-admin/src/sshecret_admin/core/db.py

@@ -12,7 +12,7 @@ def setup_database(
 ) -> tuple[sa.Engine, Callable[[], Generator[Session, None, None]]]:
     """Setup database."""
 
-    engine = create_engine(db_url, echo=True)
+    engine = create_engine(db_url, echo=False)
 
     def get_db_session() -> Generator[Session, None, None]:
         """Get DB Session."""

packages/sshecret-admin/src/sshecret_admin/core/dependencies.py

@@ -2,9 +2,10 @@
 
 from collections.abc import AsyncGenerator, Callable, Generator
 from dataclasses import dataclass
-from typing import Self
+from typing import Awaitable, Self
 
 from sqlmodel import Session
+from sshecret_admin.auth import User
 from sshecret_admin.services import AdminBackend
 from sshecret_admin.core.settings import AdminServerSettings
 
@@ -13,6 +14,8 @@ DBSessionDep = Callable[[], Generator[Session, None, None]]
 
 AdminDep = Callable[[Session], AsyncGenerator[AdminBackend, None]]
 
+GetUserDep = Callable[[User], Awaitable[User]]
+
 
 @dataclass
 class BaseDependencies:
@@ -21,17 +24,25 @@ class BaseDependencies:
     settings: AdminServerSettings
     get_db_session: DBSessionDep
 
+
 @dataclass
 class AdminDependencies(BaseDependencies):
     """Dependency class with admin."""
 
     get_admin_backend: AdminDep
+    get_current_active_user: GetUserDep
 
     @classmethod
-    def create(cls, deps: BaseDependencies, get_admin_backend: AdminDep) -> Self:
+    def create(
+        cls,
+        deps: BaseDependencies,
+        get_admin_backend: AdminDep,
+        get_current_active_user: GetUserDep,
+    ) -> Self:
         """Create from base dependencies."""
         return cls(
             settings=deps.settings,
             get_db_session=deps.get_db_session,
             get_admin_backend=get_admin_backend,
+            get_current_active_user=get_current_active_user,
         )

packages/sshecret-admin/src/sshecret_admin/core/settings.py

@@ -1,5 +1,6 @@
 """SSH Server settings."""
 
+from pathlib import Path
 from pydantic import AnyHttpUrl, Field
 from pydantic_settings import BaseSettings, SettingsConfigDict
 from sqlalchemy import URL
@@ -22,10 +23,9 @@ class AdminServerSettings(BaseSettings):
     listen_address: str = Field(default="")
     secret_key: str
     port: int = DEFAULT_LISTEN_PORT
-
     database: str = Field(default=DEFAULT_DATABASE)
-    #admin_db: str = Field(default=DEFAULT_DATABASE)
     debug: bool = False
+    password_manager_directory: Path | None = None
 
     @property
     def admin_db(self) -> URL:

packages/sshecret-admin/src/sshecret_admin/services/keepass.py

@@ -43,7 +43,10 @@ class PasswordContext:
         )
         if entry and overwrite:
             entry.password = secret
-        elif entry:
+            self.keepass.save()
+            return
+
+        if entry:
             raise ValueError("Error: A secret with this name already exists.")
         LOG.debug("Add secret entry to keepass: %s", entry_name)
         entry = self.keepass.add_entry(

packages/sshecret-admin/src/sshecret_admin/services/master_password.py

@@ -24,11 +24,14 @@ def setup_master_password(
 
     This method should run just after setting up the database.
     """
-    created = _initial_key_setup(settings, filename, regenerate)
+    keyfile = Path(filename)
+    if settings.password_manager_directory:
+        keyfile = settings.password_manager_directory / filename
+    created = _initial_key_setup(settings, keyfile, regenerate)
     if not created:
         return None
 
-    return _generate_master_password(settings, filename)
+    return _generate_master_password(settings, keyfile)
 
 
 def decrypt_master_password(
@@ -36,10 +39,12 @@ def decrypt_master_password(
 ) -> str:
     """Retrieve master password."""
     keyfile = Path(filename)
+    if settings.password_manager_directory:
+        keyfile = settings.password_manager_directory / filename
     if not keyfile.exists():
         raise RuntimeError("Error: Private key has not been generated yet.")
 
-    private_key = load_private_key(KEY_FILENAME, password=settings.secret_key)
+    private_key = load_private_key(str(keyfile.absolute()), password=settings.secret_key)
     return decode_string(encrypted, private_key)
 
 
@@ -50,12 +55,10 @@ def _generate_password() -> str:
 
 def _initial_key_setup(
     settings: AdminServerSettings,
-    filename: str = KEY_FILENAME,
+    keyfile: Path,
     regenerate: bool = False,
 ) -> bool:
     """Set up initial keys."""
-    keyfile = Path(filename)
-
     if keyfile.exists() and not regenerate:
         return False
 
@@ -67,16 +70,15 @@ def _initial_key_setup(
 
 
 def _generate_master_password(
-    settings: AdminServerSettings, filename: str = KEY_FILENAME
+    settings: AdminServerSettings, keyfile: Path
 ) -> str:
     """Generate master password for password database.
 
     Returns the encrypted string, base64 encoded.
     """
-    keyfile = Path(filename)
     if not keyfile.exists():
         raise RuntimeError("Error: Private key has not been generated yet.")
-    private_key = load_private_key(filename, password=settings.secret_key)
+    private_key = load_private_key(str(keyfile.absolute()), password=settings.secret_key)
     public_key = private_key.public_key()
     master_password = _generate_password()
     return encrypt_string(master_password, public_key)

packages/sshecret-admin/src/sshecret_admin/services/models.py

@@ -85,7 +85,7 @@ class SecretUpdate(BaseModel):
         """
         if isinstance(self.value, str):
             return self.value
-        secret = secrets.token_urlsafe(self.value.length)
+        secret = secrets.token_urlsafe(32)[:self.value.length]
         return secret
 
 

packages/sshecret-admin/src/sshecret_admin/testing.py

@@ -1,40 +1,17 @@
-"""Testing helper functions."""
+"""Testing helper functions.
+
+This allows creation of a user from within tests.
+"""
 
 import os
 
 import bcrypt
 
-from sqlmodel import Session
-from .auth_models import User
-
-
-def get_test_user_details() -> tuple[str, str]:
-    """Resolve testing user."""
-    test_user = os.getenv("SSHECRET_TEST_USERNAME") or "test"
-    test_password = os.getenv("SSHECRET_TEST_PASSWORD") or "test"
-    if test_user and test_password:
-        return (test_user, test_password)
-
-    raise RuntimeError(
-        "Error: No testing username and password registered in environment."
-    )
-
-
-def is_testing_mode() -> bool:
-    """Check if we're running in test mode.
-
-    We will determine this by looking for the environment variable SSHECRET_TEST_MODE=1
-    """
-    if os.environ.get("PYTEST_VERSION") is not None:
-        return True
-    return False
+from sshecret_admin.auth.models import User
 
 
 def create_test_user(session: Session, username: str, password: str) -> User:
-    """Create test user.
-
-    We create a user with whatever username and password is supplied.
-    """
+    """Create test user."""
     salt = bcrypt.gensalt()
     hashed_password = bcrypt.hashpw(password.encode(), salt)
     user = User(username=username, hashed_password=hashed_password.decode())

packages/sshecret-backend/migrations/versions/06af53cdf350_initial.py

@@ -0,0 +1,88 @@
+"""Initial
+
+Revision ID: 06af53cdf350
+Revises: 
+Create Date: 2025-05-06 08:39:33.531696
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '06af53cdf350'
+down_revision: Union[str, None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('api_client',
+    sa.Column('id', sa.Uuid(), nullable=False),
+    sa.Column('subsystem', sa.String(), nullable=True),
+    sa.Column('token', sa.String(), nullable=False),
+    sa.Column('read_write', sa.Boolean(), nullable=False),
+    sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('audit_log',
+    sa.Column('id', sa.Uuid(), nullable=False),
+    sa.Column('subsystem', sa.String(), nullable=False),
+    sa.Column('message', sa.String(), nullable=False),
+    sa.Column('operation', sa.String(), nullable=False),
+    sa.Column('client_id', sa.Uuid(), nullable=True),
+    sa.Column('data', sa.JSON(), nullable=True),
+    sa.Column('client_name', sa.String(), nullable=True),
+    sa.Column('secret_id', sa.Uuid(), nullable=True),
+    sa.Column('secret_name', sa.String(), nullable=True),
+    sa.Column('origin', sa.String(), nullable=True),
+    sa.Column('timestamp', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('client',
+    sa.Column('id', sa.Uuid(), nullable=False),
+    sa.Column('name', sa.String(), nullable=False),
+    sa.Column('description', sa.String(), nullable=True),
+    sa.Column('public_key', sa.Text(), nullable=False),
+    sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=False),
+    sa.Column('updated_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('name')
+    )
+    op.create_table('client_access_policy',
+    sa.Column('id', sa.Uuid(), nullable=False),
+    sa.Column('source', sa.String(), nullable=False),
+    sa.Column('client_id', sa.Uuid(), nullable=True),
+    sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=False),
+    sa.Column('updated_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True),
+    sa.ForeignKeyConstraint(['client_id'], ['client.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('client_secret',
+    sa.Column('id', sa.Uuid(), nullable=False),
+    sa.Column('name', sa.String(), nullable=False),
+    sa.Column('description', sa.String(), nullable=True),
+    sa.Column('secret', sa.String(), nullable=False),
+    sa.Column('client_id', sa.Uuid(), nullable=True),
+    sa.Column('invalidated', sa.Boolean(), nullable=False),
+    sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=False),
+    sa.Column('updated_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True),
+    sa.ForeignKeyConstraint(['client_id'], ['client.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('client_secret')
+    op.drop_table('client_access_policy')
+    op.drop_table('client')
+    op.drop_table('audit_log')
+    op.drop_table('api_client')
+    # ### end Alembic commands ###

packages/sshecret-backend/migrations/versions/37329d9b5437_update_apiclient.py

@@ -0,0 +1,34 @@
+"""Update apiclient
+
+Revision ID: 37329d9b5437
+Revises: 06af53cdf350
+Create Date: 2025-05-06 08:53:45.774225
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '37329d9b5437'
+down_revision: Union[str, None] = '06af53cdf350'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('api_client', sa.Column('updated_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True))
+    op.drop_column('api_client', 'read_write')
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('api_client', sa.Column('read_write', sa.BOOLEAN(), nullable=False))
+    op.drop_column('api_client', 'updated_at')
+    # ### end Alembic commands ###

packages/sshecret-sshd/pytest.ini

@@ -1,2 +0,0 @@
-[pytest]
-asyncio_mode = auto

packages/sshecret-sshd/src/sshecret_sshd/__init__.py

@@ -1,2 +0,0 @@
-def hello() -> str:
-    return "Hello from sshecret-sshd!"

packages/sshecret-sshd/src/sshecret_sshd/cli.py

@@ -8,7 +8,7 @@ from typing import cast
 import click
 from pydantic import ValidationError
 from .settings import ServerSettings
-from .ssh_server import start_server
+from .ssh_server import start_sshecret_sshd
 
 LOG = logging.getLogger()
 
@@ -51,7 +51,7 @@ def cli_run(ctx: click.Context, host: str | None, port: int | None) -> None:
         settings.port = port
 
     loop = asyncio.new_event_loop()
-    loop.run_until_complete(start_server(settings))
+    loop.run_until_complete(start_sshecret_sshd(settings))
     title = click.style("Sshecret SSH Daemon", fg="red", bold=True)
     click.echo(f"Starting {title}: {settings.listen_address}:{settings.port}")
     try:

packages/sshecret-sshd/src/sshecret_sshd/constants.py

@@ -6,7 +6,7 @@ ERROR_SOURCE_IP_NOT_ALLOWED = (
 )
 ERROR_NO_PUBLIC_KEY = "Error: No valid public key received."
 ERROR_INVALID_KEY_TYPE = "Error: Invalid key type: Only RSA keys are supported."
-ERROR_UNKNOWN_COMMAND = "Error: The given command was not understood."
+ERROR_UNKNOWN_COMMAND = "Error: Unsupported command."
 SERVER_KEY_TYPE = "ed25519"
 ERROR_BACKEND_ERROR = "Error: Unexpected response or error from backend"
 ERROR_INFO_BACKEND_GONE = "Unexpected error: Backend connection lost."

packages/sshecret-sshd/src/sshecret_sshd/ssh_server.py

@@ -1,5 +1,6 @@
 """SSH Server implementation."""
 
+from asyncio import _register_task
 import logging
 
 import asyncssh
@@ -32,7 +33,7 @@ class CommandError(Exception):
     """Error class for errors during command processing."""
 
 
-def audit_process(
+async def audit_process(
     backend: SshecretBackend,
     process: asyncssh.SSHServerProcess[str],
     operation: Operation,
@@ -54,24 +55,25 @@ def audit_process(
             data["command"] = cmd
         data["args"] = " ".join(cmd_args)
 
-    backend.audit(SubSystem.SSHD).write(
+    await backend.audit(SubSystem.SSHD).write_async(
         operation, message, remote_ip, client, secret=None, secret_name=secret, **data
     )
 
 
-def audit_event(
+async def audit_event(
     backend: SshecretBackend,
     message: str,
     operation: Operation,
     client: Client | None = None,
     origin: str | None = None,
     secret: str | None = None,
+    **data: str,
 ) -> None:
     """Add an audit event."""
     if not origin:
         origin = "UNKNOWN"
-    backend.audit(SubSystem.SSHD).write(
-        operation, message, origin, client, secret=None, secret_name=secret
+    await backend.audit(SubSystem.SSHD).write_async(
+        operation, message, origin, client, secret=None, secret_name=secret, **data
     )
 
 
@@ -158,22 +160,14 @@ async def get_stdin_public_key(process: asyncssh.SSHServerProcess[str]) -> str |
             public_key = verify_key_input(line.rstrip("\n"))
             if public_key:
                 break
-            process.stdout.write("Invalid key. Must be RSA Public Key.\n")
+            raise CommandError(constants.ERROR_INVALID_KEY_TYPE)
     except asyncssh.BreakReceived:
         pass
-    process.stdout.write("OK\n")
+    else:
+        process.stdout.write("OK\n")
     return public_key
 
 
-def get_info_user_and_public_key(
-    process: asyncssh.SSHServerProcess[str],
-) -> tuple[str | None, str | None]:
-    """Get username and public_key from process."""
-    username = cast("str | None", process.get_extra_info("provided_username", None))
-    public_key = cast("str | None", process.get_extra_info("provided_key", None))
-    return (username, public_key)
-
-
 async def register_client(
     process: asyncssh.SSHServerProcess[str],
     backend: SshecretBackend,
@@ -187,7 +181,7 @@ async def register_client(
     key = asyncssh.import_public_key(public_key)
     if key.algorithm.decode() != "ssh-rsa":
         raise CommandError(constants.ERROR_INVALID_KEY_TYPE)
-    audit_process(backend, process, Operation.CREATE, "Registering new client")
+    await audit_process(backend, process, Operation.CREATE, "Registering new client")
     LOG.debug("Registering client %s with public key %s", username, public_key)
     await backend.create_client(username, public_key)
 
@@ -205,7 +199,7 @@ async def get_secret(
     if secret_name not in client.secrets:
         raise CommandError(constants.ERROR_NO_SECRET_FOUND)
 
-    audit_event(
+    await audit_event(
         backend,
         "Client requested secret",
         operation=Operation.READ,
@@ -247,7 +241,7 @@ async def dispatch_cmd_register(process: asyncssh.SSHServerProcess[str]) -> None
     allowed_networks = get_info_allowed_registration(process)
     if not allowed_networks:
         process.stdout.write("Unauthorized.\n")
-        audit_process(
+        await audit_process(
             backend,
             process,
             Operation.DENY,
@@ -266,7 +260,7 @@ async def dispatch_cmd_register(process: asyncssh.SSHServerProcess[str]) -> None
         if client_address in network:
             break
     else:
-        audit_process(
+        await audit_process(
             backend,
             process,
             Operation.DENY,
@@ -381,8 +375,14 @@ class AsshyncServer(asyncssh.SSHServer):
 
         """
         LOG.debug("Started authentication flow for user %s", username)
-        if not self._conn:
-            return True
+        allowed_registration_sources: list[IPvAnyNetwork] = []
+        if self.registration_enabled and not self.allow_registration_from:
+            allowed_registration_sources.append(ipaddress.IPv4Network("0.0.0.0/0"))
+            allowed_registration_sources.append(ipaddress.IPv6Network("::/0"))
+        elif self.registration_enabled and self.allow_registration_from:
+            allowed_registration_sources = self.allow_registration_from
+
+        assert self._conn is not None, "Error: No connection found."
         if client := await self.backend.get_client(username):
             LOG.debug("Client lookup sucessful: %r", client)
             if key := self.resolve_client_key(client):
@@ -390,40 +390,50 @@ class AsshyncServer(asyncssh.SSHServer):
                 self._conn.set_extra_info(client=client)
                 self._conn.set_authorized_keys(key)
             else:
-                audit_event(
+                await audit_event(
                     self.backend,
                     "Client denied due to policy",
                     Operation.DENY,
                     client,
                     origin=self.client_ip,
                 )
-                LOG.warning("Client connection denied due to policy.")
-        elif self.registration_enabled:
-            self._conn.set_extra_info(provided_username=username)
-            self._conn.set_extra_info(
-                allow_registration_from=self.allow_registration_from
-            )
-            LOG.warning(
-                "Registration enabled, and client is not recognized. Bypassing authentication."
-            )
-            return False
+                LOG.warning(
+                    "Client connection denied. Source: %s, policy: %r.",
+                    self.client_ip,
+                    client.policies,
+                )
+        elif allowed_registration_sources and self.client_ip:
+            client_ip = ipaddress.ip_address(self.client_ip)
+            for network in allowed_registration_sources:
+                if client_ip.version != network.version:
+                    continue
+                if client_ip in network:
+                    self._conn.set_extra_info(provided_username=username)
+                    self._conn.set_extra_info(
+                        allow_registration_from=self.allow_registration_from
+                    )
+                    LOG.info(
+                        "Registration enabled, and client is not recognized. Bypassing authentication."
+                    )
+                    return False
+            else:
+                await audit_event(
+                    self.backend,
+                    "Received registration command from unauthorized subnet.",
+                    Operation.DENY,
+                    origin=self.client_ip,
+                    username=username,
+                )
+
+                LOG.warning(
+                    "Registration not permitted for username=%s, origin: %s",
+                    username,
+                    self.client_ip,
+                )
 
         LOG.debug("Continuing to regular authentication")
         return True
 
-    @override
-    def validate_public_key(self, username: str, key: asyncssh.SSHKey) -> bool:
-        """Intercept public key validation."""
-        if not self._conn:
-            return False
-
-        # get an export of the provided public key.
-        keystring = key.export_public_key().decode()
-        self._conn.set_extra_info(provided_username=username)
-        self._conn.set_extra_info(provided_key=keystring)
-        LOG.debug("Intercepting user public key")
-        return False
-
     def resolve_client_key(self, client: Client) -> asyncssh.SSHAuthorizedKeys | None:
         """Resolve the client key.
 
@@ -492,7 +502,9 @@ async def run_ssh_server(
     return server
 
 
-async def start_server(settings: ServerSettings | None = None) -> None:
+async def start_sshecret_sshd(
+    settings: ServerSettings | None = None,
+) -> asyncssh.SSHAcceptor:
     """Start the server."""
     server_key = get_server_key()
 
@@ -500,7 +512,7 @@ async def start_server(settings: ServerSettings | None = None) -> None:
         settings = ServerSettings()  # pyright: ignore[reportCallIssue]
 
     backend = SshecretBackend(str(settings.backend_url), settings.backend_token)
-    await run_ssh_server(
+    return await run_ssh_server(
         backend=backend,
         listen_address=settings.listen_address,
         port=settings.port,

pyproject.toml

@@ -6,12 +6,15 @@ test = "pytest ${PWD}"
 all = [ {ref="fmt"}, {ref="lint"}, {ref="check"}, {ref="test"} ]
 "ci:fmt" = "ruff format --check ${PWD}"  # fail if not formatted
 "ci:lint" = "ruff check ${PWD}"
+[tool.poe.tasks.coverage]
+cmd = "pytest --cov-config=${PWD}/.coveragerc --cov --cov-report=html --cov-report=term-missing"
+cwd = "${POE_PWD}"
 
 
 [project]
 name = "sshecret"
 version = "0.1.0"
-description = "Add your description here"
+description = "A simple secret manager with an SSH server."
 readme = "README.md"
 authors = [
     { name = "Allan Eising", email = "allan@eising.dk" }
@@ -61,7 +64,9 @@ dev = [
     "python-dotenv>=1.0.1",
 ]
 test = [
+    "coverage>=7.8.0",
     "pytest>=8.3.5",
     "pytest-asyncio>=0.26.0",
+    "pytest-cov>=6.1.1",
     "robotframework>=7.2.2",
 ]

tests/integration/clients.py

@@ -0,0 +1,27 @@
+"""Client helpers."""
+
+from dataclasses import dataclass
+from cryptography.hazmat.primitives.asymmetric import rsa
+
+from sshecret.crypto import generate_private_key, generate_public_key_string
+
+
+@dataclass
+class ClientData:
+    """Test client."""
+
+    name: str
+    private_key: rsa.RSAPrivateKey
+
+    @property
+    def public_key(self) -> str:
+        """Return public key as string."""
+        return generate_public_key_string(self.private_key.public_key())
+
+
+def create_test_client(name: str) -> ClientData:
+    """Create test client."""
+    return ClientData(
+        name=name,
+        private_key=generate_private_key()
+    )

tests/integration/conftest.py

@@ -0,0 +1,209 @@
+"""Test library.
+
+Strategy:
+
+We start by spawning the backend server, and create two test keys.
+
+Then we spawn the sshd and the admin api.
+"""
+
+import asyncio
+import asyncssh
+import secrets
+import tempfile
+from contextlib import asynccontextmanager
+from pathlib import Path
+
+import httpx
+import pytest
+import pytest_asyncio
+
+import uvicorn
+from sshecret.backend import SshecretBackend
+from sshecret.crypto import (
+    generate_private_key,
+    generate_public_key_string,
+    write_private_key,
+)
+from sshecret_admin.core.app import create_admin_app
+from sshecret_admin.core.settings import AdminServerSettings
+from sshecret_backend.app import create_backend_app
+from sshecret_backend.settings import BackendSettings
+from sshecret_backend.testing import create_test_token
+from sshecret_sshd.settings import ServerSettings
+from sshecret_sshd.ssh_server import start_sshecret_sshd
+
+from .clients import ClientData
+from .helpers import create_sshd_server_key, create_test_admin_user, in_tempdir
+from .types import PortFactory, TestPorts
+
+TEST_SCOPE = "function"
+LOOP_SCOPE = "function"
+
+
+def make_test_key() -> str:
+    """Generate a test key."""
+    private_key = generate_private_key()
+    return generate_public_key_string(private_key.public_key())
+
+
+@pytest.fixture(name="test_ports", scope="session")
+def generate_test_ports(unused_tcp_port_factory: PortFactory) -> TestPorts:
+    """Generate the test ports."""
+    test_ports = TestPorts(
+        backend=unused_tcp_port_factory(),
+        admin=unused_tcp_port_factory(),
+        sshd=unused_tcp_port_factory(),
+    )
+    print(f"{test_ports=!r}")
+    return test_ports
+
+
+@pytest_asyncio.fixture(scope=TEST_SCOPE, name="backend_server", loop_scope=LOOP_SCOPE)
+async def run_backend_server(test_ports: TestPorts):
+    """Run the backend server."""
+    port = test_ports.backend
+    with tempfile.TemporaryDirectory() as tmp_dir:
+        backend_work_path = Path(tmp_dir)
+        db_file = backend_work_path / "backend.db"
+        backend_settings = BackendSettings(database=str(db_file.absolute()))
+        backend_app = create_backend_app(backend_settings)
+        token = create_test_token(backend_settings)
+        config = uvicorn.Config(app=backend_app, port=port, loop="asyncio")
+        server = uvicorn.Server(config=config)
+        server_task = asyncio.create_task(server.serve())
+        await asyncio.sleep(0.1)
+        backend_url = f"http://127.0.0.1:{port}"
+        yield (backend_url, token)
+        server.should_exit = True
+        await server_task
+
+
+@pytest_asyncio.fixture(scope=TEST_SCOPE, name="admin_server", loop_scope=LOOP_SCOPE)
+async def run_admin_server(test_ports: TestPorts, backend_server: tuple[str, str]):
+    """Run admin server."""
+    backend_url, backend_token = backend_server
+    secret_key = secrets.token_urlsafe(32)
+    port = test_ports.admin
+    with in_tempdir() as admin_work_path:
+        admin_db = admin_work_path / "ssh_admin.db"
+        admin_settings = AdminServerSettings.model_validate(
+            {
+                "sshecret_backend_url": backend_url,
+                "backend_token": backend_token,
+                "secret_key": secret_key,
+                "listen_address": "127.0.0.1",
+                "port": port,
+                "database": str(admin_db.absolute()),
+                "password_manager_directory": str(admin_work_path.absolute()),
+            }
+        )
+        admin_app = create_admin_app(admin_settings)
+        config = uvicorn.Config(app=admin_app, port=port, loop="asyncio")
+        server = uvicorn.Server(config=config)
+        server_task = asyncio.create_task(server.serve())
+        await asyncio.sleep(0.1)
+        admin_url = f"http://127.0.0.1:{port}"
+        admin_password = secrets.token_urlsafe(10)
+        create_test_admin_user(admin_settings, "test", admin_password)
+        await asyncio.sleep(0.1)
+        yield (admin_url, ("test", admin_password))
+        server.should_exit = True
+        await server_task
+
+
+@pytest_asyncio.fixture(scope=TEST_SCOPE, name="ssh_server", loop_scope=LOOP_SCOPE)
+async def start_ssh_server(test_ports: TestPorts, backend_server: tuple[str, str]):
+    """Run ssh server."""
+    backend_url, backend_token = backend_server
+    port = test_ports.sshd
+    with in_tempdir() as ssh_workdir:
+        create_sshd_server_key(ssh_workdir)
+        sshd_server_settings = ServerSettings.model_validate(
+            {
+                "sshecret_backend_url": backend_url,
+                "backend_token": backend_token,
+                "listen_address": "",
+                "port": port,
+                "registration": {"enabled": True, "allow_from": "0.0.0.0/0"},
+                "enable_ping_command": True,
+            }
+        )
+
+        ssh_server = await start_sshecret_sshd(sshd_server_settings)
+        await asyncio.sleep(0.1)
+        print(f"Started sshd on port {port}")
+        yield port
+
+        ssh_server.close()
+        await ssh_server.wait_closed()
+
+
+@pytest_asyncio.fixture(scope=TEST_SCOPE, name="backend_client", loop_scope=LOOP_SCOPE)
+async def create_backend_http_client(backend_server: tuple[str, str]):
+    """Create a test client."""
+    backend_url, backend_token = backend_server
+    print(f"Creating backend client towards {backend_url}")
+    async with httpx.AsyncClient(
+        base_url=backend_url, headers={"X-API-Token": backend_token}
+    ) as client:
+        yield client
+
+
+@pytest_asyncio.fixture(name="backend_api")
+async def get_test_backend_api(backend_server: tuple[str, str]) -> SshecretBackend:
+    """Get the backend API."""
+    backend_url, backend_token = backend_server
+    return SshecretBackend(backend_url, backend_token)
+
+
+@pytest.fixture(scope=TEST_SCOPE)
+def ssh_command_runner(ssh_server: int, tmp_path: Path):
+    """Run a single command on the ssh server."""
+    port = ssh_server
+
+    async def run_command_as(test_client: ClientData, command: str):
+        private_key_file = tmp_path / f"id_{test_client.name}"
+        write_private_key(test_client.private_key, private_key_file)
+
+        conn = await asyncssh.connect(
+            "127.0.0.1",
+            port=port,
+            username=test_client.name,
+            client_keys=[str(private_key_file)],
+            known_hosts=None,
+        )
+        try:
+            result = await conn.run(command)
+            return result
+        finally:
+            conn.close()
+            await conn.wait_closed()
+
+    return run_command_as
+
+
+@pytest.fixture(name="ssh_session", scope=TEST_SCOPE)
+def create_ssh_session(ssh_server: int, tmp_path: Path):
+    """Create a ssh Session."""
+    port = ssh_server
+
+    @asynccontextmanager
+    async def run_process(test_client: ClientData, command: str):
+        private_key_file = tmp_path / f"id_{test_client.name}"
+        write_private_key(test_client.private_key, private_key_file)
+        conn = await asyncssh.connect(
+            "127.0.0.1",
+            port=port,
+            username=test_client.name,
+            client_keys=[str(private_key_file)],
+            known_hosts=None,
+        )
+        try:
+            async with conn.create_process(command) as process:
+                yield process
+        finally:
+            conn.close()
+            await conn.wait_closed()
+
+    return run_process

tests/integration/helpers.py

@@ -0,0 +1,41 @@
+"""Helper functions."""
+
+import os
+import tempfile
+from collections.abc import Iterator
+from contextlib import contextmanager
+from pathlib import Path
+from sqlmodel import Session, create_engine
+from sshecret.crypto import generate_private_key, write_private_key
+from sshecret_admin.auth.authentication import hash_password
+from sshecret_admin.auth.models import User, init_db
+from sshecret_admin.core.settings import AdminServerSettings
+
+def create_test_admin_user(settings: AdminServerSettings, username: str, password: str) -> None:
+    """Create a test admin user."""
+    hashed_password = hash_password(password)
+    engine = create_engine(settings.admin_db)
+    init_db(engine)
+    with Session(engine) as session:
+        user = User(username=username, hashed_password=hashed_password)
+        session.add(user)
+        session.commit()
+
+
+def create_sshd_server_key(sshd_path: Path) -> Path:
+    """Create a ssh key at a general"""
+    server_file = sshd_path / "ssh_host_key"
+    private_key = generate_private_key()
+    write_private_key(private_key, server_file)
+    return server_file
+
+
+@contextmanager
+def in_tempdir() -> Iterator[Path]:
+    """Run in a temporary directory."""
+    curdir = os.getcwd()
+    with tempfile.TemporaryDirectory() as temp_directory:
+        temp_path = Path(temp_directory)
+        os.chdir(temp_directory)
+        yield temp_path
+        os.chdir(curdir)

tests/integration/test_admin_api.py

@@ -0,0 +1,222 @@
+"""Tests of the admin interface."""
+
+from collections.abc import AsyncIterator
+from contextlib import asynccontextmanager
+import pytest
+
+import httpx
+
+from sshecret.backend import Client
+
+from sshecret.crypto import generate_private_key, generate_public_key_string
+
+from .types import AdminServer
+
+
+def make_test_key() -> str:
+    """Generate a test key."""
+    private_key = generate_private_key()
+    return generate_public_key_string(private_key.public_key())
+
+
+class BaseAdminTests:
+    """Base admin test class."""
+
+    @asynccontextmanager
+    async def http_client(
+        self, admin_server: AdminServer, authenticate: bool = True
+    ) -> AsyncIterator[httpx.AsyncClient]:
+        """Run a client towards the admin rest api."""
+        admin_url, credentials = admin_server
+        username, password = credentials
+        headers: dict[str, str] | None = None
+        if authenticate:
+            async with httpx.AsyncClient(base_url=admin_url) as client:
+
+                response = await client.post(
+                    "api/v1/token", data={"username": username, "password": password}
+                )
+                assert response.status_code == 200
+                data = response.json()
+                assert "access_token" in data
+                token = data["access_token"]
+                headers = {"Authorization": f"Bearer {token}"}
+
+        async with httpx.AsyncClient(base_url=admin_url, headers=headers) as client:
+            yield client
+
+    async def create_client(
+        self,
+        admin_server: AdminServer,
+        name: str,
+        public_key: str | None = None,
+    ) -> Client:
+        """Create a client."""
+        if not public_key:
+            public_key = make_test_key()
+
+        new_client = {
+            "name": name,
+            "public_key": public_key,
+            "sources": ["192.0.2.0/24"],
+        }
+
+        async with self.http_client(admin_server, True) as http_client:
+            response = await http_client.post("api/v1/clients/", json=new_client)
+            assert response.status_code == 200
+            data = response.json()
+            client = Client.model_validate(data)
+
+        return client
+
+
+class TestAdminAPI(BaseAdminTests):
+    """Tests of the Admin REST API."""
+
+    @pytest.mark.asyncio
+    async def test_health_check(
+        self, admin_server: tuple[str, tuple[str, str]]
+    ) -> None:
+        """Test admin login."""
+        async with self.http_client(admin_server, False) as client:
+            resp = await client.get("/health")
+            assert resp.status_code == 200
+
+    @pytest.mark.asyncio
+    async def test_admin_login(self, admin_server: AdminServer) -> None:
+        """Test admin login."""
+
+        async with self.http_client(admin_server, False) as client:
+            resp = await client.get("api/v1/clients/")
+            assert resp.status_code == 401
+
+        async with self.http_client(admin_server, True) as client:
+            resp = await client.get("api/v1/clients/")
+            assert resp.status_code == 200
+
+
+class TestAdminApiClients(BaseAdminTests):
+    """Test client routes."""
+
+    @pytest.mark.asyncio
+    async def test_create_client(self, admin_server: AdminServer) -> None:
+        """Test create_client."""
+        client = await self.create_client(admin_server, "testclient")
+
+        assert client.id is not None
+        assert client.name == "testclient"
+
+    @pytest.mark.asyncio
+    async def test_get_clients(self, admin_server: AdminServer) -> None:
+        """Test get_clients."""
+
+        client_names = ["test-db", "test-app", "test-www"]
+        for name in client_names:
+            await self.create_client(admin_server, name)
+        async with self.http_client(admin_server) as http_client:
+            resp = await http_client.get("api/v1/clients/")
+            assert resp.status_code == 200
+            data = resp.json()
+            assert isinstance(data, list)
+            assert len(data) == 3
+            for entry in data:
+                assert isinstance(entry, dict)
+                client_name = entry.get("name")
+                assert client_name in client_names
+
+    @pytest.mark.asyncio
+    async def test_delete_client(self, admin_server: AdminServer) -> None:
+        """Test delete_client."""
+        await self.create_client(admin_server, name="testclient")
+        async with self.http_client(admin_server) as http_client:
+            resp = await http_client.get("api/v1/clients/")
+            assert resp.status_code == 200
+            data = resp.json()
+            assert isinstance(data, list)
+            assert len(data) == 1
+            assert data[0]["name"] == "testclient"
+
+            resp = await http_client.delete("/api/v1/clients/testclient")
+            assert resp.status_code == 200
+
+            resp = await http_client.get("api/v1/clients/")
+            assert resp.status_code == 200
+            data = resp.json()
+            assert isinstance(data, list)
+            assert len(data) == 0
+
+
+class TestAdminApiSecrets(BaseAdminTests):
+    """Test secret management."""
+
+    @pytest.mark.asyncio
+    async def test_add_secret(self, admin_server: AdminServer) -> None:
+        """Test add_secret."""
+        await self.create_client(admin_server, name="testclient")
+        async with self.http_client(admin_server) as http_client:
+            data = {
+                "name": "testsecret",
+                "clients": ["testclient"],
+                "value": "secretstring",
+            }
+            resp = await http_client.post("api/v1/secrets/", json=data)
+            assert resp.status_code == 200
+
+    @pytest.mark.asyncio
+    async def test_get_secret(self, admin_server: AdminServer) -> None:
+        """Test get_secret."""
+        await self.test_add_secret(admin_server)
+        async with self.http_client(admin_server) as http_client:
+            resp = await http_client.get("api/v1/secrets/testsecret")
+            assert resp.status_code == 200
+            data = resp.json()
+            assert isinstance(data, dict)
+            assert data["name"] == "testsecret"
+            assert data["secret"] == "secretstring"
+            assert "testclient" in data["clients"]
+
+    @pytest.mark.asyncio
+    async def test_add_secret_auto(self, admin_server: AdminServer) -> None:
+        """Test adding a secret with an auto-generated value."""
+        await self.create_client(admin_server, name="testclient")
+        async with self.http_client(admin_server) as http_client:
+            data = {
+                "name": "testsecret",
+                "clients": ["testclient"],
+                "value": {"auto_generate": True, "length": 17},
+            }
+            resp = await http_client.post("api/v1/secrets/", json=data)
+            assert resp.status_code == 200
+            resp = await http_client.get("api/v1/secrets/testsecret")
+            assert resp.status_code == 200
+            data = resp.json()
+            assert isinstance(data, dict)
+            assert data["name"] == "testsecret"
+            assert len(data["secret"]) == 17
+            assert "testclient" in data["clients"]
+
+    @pytest.mark.asyncio
+    async def test_update_secret(self, admin_server: AdminServer) -> None:
+        """Test updating secrets."""
+        await self.test_add_secret_auto(admin_server)
+        async with self.http_client(admin_server) as http_client:
+            resp = await http_client.put(
+                "api/v1/secrets/testsecret",
+                json={"value": "secret"},
+            )
+            assert resp.status_code == 200
+            resp = await http_client.get("api/v1/secrets/testsecret")
+            assert resp.status_code == 200
+            data = resp.json()
+            assert data["secret"] == "secret"
+
+            resp = await http_client.put(
+                "api/v1/secrets/testsecret",
+                json={"value": {"auto_generate": True, "length": 16}},
+            )
+            assert resp.status_code == 200
+
+            resp = await http_client.get("api/v1/secrets/testsecret")
+            assert resp.status_code == 200
+            data = resp.json()
+            assert len(data["secret"]) == 16

tests/integration/test_backend.py

@@ -0,0 +1,59 @@
+"""Test backend.
+
+These tests just ensure that the backend works well enough for us to run the
+rest of the tests.
+
+"""
+import pytest
+import httpx
+from sshecret.backend import SshecretBackend
+from .clients import create_test_client
+
+
+@pytest.mark.asyncio
+async def test_healthcheck(backend_client: httpx.AsyncClient) -> None:
+    """Test healthcheck command."""
+    resp = await backend_client.get("/health")
+    assert resp.status_code == 200
+    assert resp.json() == {"status": "LIVE"}
+
+@pytest.mark.asyncio
+async def test_create_client(backend_api: SshecretBackend) -> None:
+    """Test creating a client."""
+    test_client = create_test_client("test")
+    await backend_api.create_client("test", test_client.public_key, "A test client")
+
+    # fetch the list of clients.
+
+    clients = await backend_api.get_clients()
+    assert clients is not None
+
+    assert len(clients) == 1
+
+    assert clients[0].name == "test"
+
+    assert clients[0].public_key == test_client.public_key
+
+@pytest.mark.asyncio
+async def test_create_secret(backend_api: SshecretBackend) -> None:
+    """Test creating secrets."""
+    test_client = create_test_client("test")
+    await backend_api.create_client("test", test_client.public_key, "A test client")
+
+    await backend_api.create_client_secret("test", "mysecret", "encrypted_secret")
+
+    secrets = await backend_api.get_secrets()
+    assert len(secrets) == 1
+    assert secrets[0].name == "mysecret"
+
+
+    secret_to_client = await backend_api.get_secret("mysecret")
+    assert secret_to_client is not None
+
+    assert secret_to_client.name == "mysecret"
+    assert "test" in secret_to_client.clients
+
+    secret = await backend_api.get_client_secret("test", "mysecret")
+
+    assert secret is not None
+    assert secret == "encrypted_secret"

tests/integration/test_sshd.py

@@ -0,0 +1,139 @@
+"""Tests where the sshd is the main consumer.
+
+This essentially also tests parts of the admin API.
+"""
+
+from contextlib import asynccontextmanager
+from typing import AsyncIterator
+import os
+import httpx
+
+import pytest
+from sshecret.crypto import decode_string
+from sshecret.backend.api import SshecretBackend
+
+from .clients import create_test_client, ClientData
+
+from .types import CommandRunner, ProcessRunner
+
+
+class TestSshd:
+    """Class based tests.
+
+    This allows us to create small helpers.
+    """
+
+    @pytest.mark.asyncio
+    async def test_get_secret(
+        self, backend_api: SshecretBackend, ssh_command_runner: CommandRunner
+    ) -> None:
+        """Test get secret flow."""
+        test_client = create_test_client("testclient")
+        await backend_api.create_client(
+            "testclient", test_client.public_key, "A test client"
+        )
+        await backend_api.create_client_secret("testclient", "testsecret", "bogus")
+        response = await ssh_command_runner(test_client, "get_secret testsecret")
+        assert response.exit_status == 0
+        assert response.stdout is not None
+        assert isinstance(response.stdout, str)
+        assert response.stdout.rstrip() == "bogus"
+
+    @pytest.mark.asyncio
+    async def test_register(
+        self, backend_api: SshecretBackend, ssh_session: ProcessRunner
+    ) -> None:
+        """Test registration."""
+        await self.register_client("new_client", ssh_session)
+        # Check that the client is created.
+        clients = await backend_api.get_clients()
+        assert len(clients) == 1
+
+        client = clients[0]
+        assert client.name == "new_client"
+
+    async def register_client(
+        self, name: str, ssh_session: ProcessRunner
+    ) -> ClientData:
+        """Register client."""
+        test_client = create_test_client(name)
+        async with ssh_session(test_client, "register") as session:
+            maxlines = 10
+            linenum = 0
+            found = False
+            while linenum < maxlines:
+                line = await session.stdout.readline()
+                if "Enter public key" in line:
+                    found = True
+                    break
+            assert found is True
+            session.stdin.write(test_client.public_key + "\n")
+
+            result = await session.stdout.readline()
+            assert "OK" in result
+            await session.wait()
+        return test_client
+
+
+class TestSshdIntegration(TestSshd):
+    """Integration tests."""
+
+    @pytest.mark.asyncio
+    async def test_end_to_end(
+        self,
+        backend_api: SshecretBackend,
+        admin_server: tuple[str, tuple[str, str]],
+        ssh_session: ProcessRunner,
+        ssh_command_runner: CommandRunner,
+    ) -> None:
+        """Test end to end."""
+        test_client = await self.register_client("myclient", ssh_session)
+        url, credentials = admin_server
+        username, password = credentials
+        async with self.admin_client(url, username, password) as http_client:
+            resp = await http_client.get("api/v1/clients/")
+            assert resp.status_code == 200
+            clients = resp.json()
+            assert len(clients) == 1
+            assert clients[0]["name"] == "myclient"
+
+            create_model = {
+                "name": "mysecret",
+                "clients": ["myclient"],
+                "value": "mypassword",
+            }
+            resp = await http_client.post("api/v1/secrets/", json=create_model)
+            assert resp.status_code == 200
+
+        # Login via ssh to fetch the decrypted value.
+        ssh_output = await ssh_command_runner(test_client, "get_secret mysecret")
+        assert ssh_output.stdout is not None
+        assert isinstance(ssh_output.stdout, str)
+        encrypted = ssh_output.stdout.rstrip()
+        decrypted = decode_string(encrypted, test_client.private_key)
+        assert decrypted == "mypassword"
+
+    async def login(self, url: str, username: str, password: str) -> str:
+        """Login and get token."""
+        api_url = os.path.join(url, "api/v1", "token")
+        client = httpx.AsyncClient()
+
+        response = await client.post(
+            api_url, data={"username": username, "password": password}
+        )
+        assert response.status_code == 200
+        data = response.json()
+        assert "access_token" in data
+        assert isinstance(data["access_token"], str)
+        return str(data["access_token"])
+
+    @asynccontextmanager
+    async def admin_client(
+        self, url: str, username: str, password: str
+    ) -> AsyncIterator[httpx.AsyncClient]:
+        """Create an admin client."""
+        token = await self.login(url, username, password)
+        async with httpx.AsyncClient(
+            base_url=url, headers={"Authorization": f"Bearer {token}"}
+        ) as client:
+            yield client

tests/integration/types.py

@@ -0,0 +1,30 @@
+"""Typings."""
+import asyncssh
+
+from typing import Any, AsyncContextManager, Protocol
+from dataclasses import dataclass
+from collections.abc import Callable, Awaitable
+
+from .clients import ClientData
+
+
+PortFactory = Callable[[], int]
+
+AdminServer = tuple[str, tuple[str, str]]
+
+@dataclass
+class TestPorts:
+    """Test port dataclass."""
+
+    backend: int
+    admin: int
+    sshd: int
+
+
+CommandRunner = Callable[[ClientData, str], Awaitable[asyncssh.SSHCompletedProcess]]
+
+class ProcessRunner(Protocol):
+    """Process runner typing."""
+
+    def __call__(self, test_client: ClientData, command: str) -> AsyncContextManager[asyncssh.SSHClientProcess[Any]]:
+        ...

tests/packages/sshd/__init__.py

@@ -0,0 +1 @@
+

tests/packages/sshd/conftest.py

@@ -1,11 +1,15 @@
 import asyncio
+from pydantic import IPvAnyNetwork
 import pytest
 import uuid
 import asyncssh
 import tempfile
 from contextlib import asynccontextmanager
+import pytest_asyncio
+from pytest import FixtureRequest
+
 from unittest.mock import AsyncMock, MagicMock
-from ipaddress import IPv4Network, IPv6Network
+from ipaddress import IPv4Network, IPv6Network, ip_network
 
 from sshecret_sshd.ssh_server import run_ssh_server
 from sshecret_sshd.settings import ClientRegistrationSettings
@@ -31,14 +35,16 @@ def client_registry() -> ClientRegistry:
     ) -> str:
         private_key = asyncssh.generate_private_key("ssh-rsa")
         public_key = private_key.export_public_key()
-        clients[name] = ClientKey(name, private_key, public_key.decode().rstrip())
+        clients[name] = ClientKey(
+            name, private_key, public_key.decode().rstrip(), policies
+        )
         secrets.update({(name, s): f"mocked-secret-{s}" for s in (secret_names or [])})
         return clients[name]
 
     return {"clients": clients, "secrets": secrets, "add_client": add_client}
 
 
-@pytest.fixture(scope="function")
+@pytest_asyncio.fixture(scope="function")
 async def mock_backend(client_registry: ClientRegistry) -> MagicMock:
     backend = MagicMock()
     clients_data = client_registry["clients"]
@@ -47,13 +53,16 @@ async def mock_backend(client_registry: ClientRegistry) -> MagicMock:
     async def get_client(name: str) -> Client | None:
         client_key = clients_data.get(name)
         if client_key:
+            policies = [IPv4Network("0.0.0.0/0"), IPv6Network("::/0")]
+            if client_key.policies:
+                policies = [ip_network(network) for network in client_key.policies]
             response_model = Client(
                 id=uuid.uuid4(),
                 name=name,
                 description=f"Mock client {name}",
                 public_key=client_key.public_key,
                 secrets=[s for (c, s) in secrets_data if c == name],
-                policies=[IPv4Network("0.0.0.0/0"), IPv6Network("::/0")],
+                policies=policies,
             )
             return response_model
         return None
@@ -79,32 +88,46 @@ async def mock_backend(client_registry: ClientRegistry) -> MagicMock:
                 continue
             secrets_data[(name, secret_name)] = secret
 
+    async def write_audit(*args, **kwargs):
+        """Write audit mock."""
+        return None
+
     backend.get_client = AsyncMock(side_effect=get_client)
     backend.get_client_secret = AsyncMock(side_effect=get_client_secret)
     backend.create_client = AsyncMock(side_effect=create_client)
 
-    # Make sure backend.audit(...) returns the audit mock
     audit = MagicMock()
-    audit.write = MagicMock()
+    audit.write_async = AsyncMock(side_effect=write_audit)
     backend.audit = MagicMock(return_value=audit)
 
     return backend
 
 
-@pytest.fixture(scope="function")
+@pytest_asyncio.fixture(scope="function")
 async def ssh_server(
-    mock_backend: MagicMock, unused_tcp_port: int
+    request: FixtureRequest,
+    mock_backend: MagicMock,
+    unused_tcp_port: int,
 ) -> SshServerFixtureFun:
     port = unused_tcp_port
-
     private_key = asyncssh.generate_private_key("ssh-ed25519")
     key_str = private_key.export_private_key()
+    registration_mark = request.node.get_closest_marker("enable_registration")
+    registration_enabled = registration_mark is not None
+    registration_source_mark = request.node.get_closest_marker("registration_sources")
+    allowed_from: list[IPvAnyNetwork] = []
+    if registration_source_mark:
+        for network in registration_source_mark.args:
+            allowed_from.append(ip_network(network))
+    else:
+        allowed_from = [IPv4Network("0.0.0.0/0")]
     with tempfile.NamedTemporaryFile("w+", delete=True) as key_file:
         key_file.write(key_str.decode())
         key_file.flush()
 
         registration_settings = ClientRegistrationSettings(
-            enabled=True, allow_from=[IPv4Network("0.0.0.0/0")]
+            enabled=registration_enabled,
+            allow_from=allowed_from,
         )
         server = await run_ssh_server(
             backend=mock_backend,

tests/packages/sshd/test_errors.py

@@ -0,0 +1,155 @@
+"""Test various exceptions and error conditions."""
+
+from collections.abc import AsyncIterator
+from contextlib import asynccontextmanager
+import asyncssh
+import pytest
+
+from .types import ClientRegistry, CommandRunner, ProcessRunner, SshServerFixture
+
+
+class BaseSshTests:
+    """Base test class."""
+
+    @asynccontextmanager
+    async def unregistered_client(self, username: str, port: int):
+        """Generate SSH session as an uregistered client."""
+        private_key = asyncssh.generate_private_key("ssh-rsa")
+        conn = await asyncssh.connect(
+            "127.0.0.1",
+            port=port,
+            username=username,
+            client_keys=[private_key],
+            known_hosts=None,
+        )
+        try:
+            yield conn
+        finally:
+            conn.close()
+            await conn.wait_closed()
+
+    @asynccontextmanager
+    async def ssh_connection(
+        self, username: str, port: int, private_key: asyncssh.SSHKey
+    ):
+        """Generate SSH session as a client with an ed25519 key."""
+        # private_key = asyncssh.generate_private_key("ssh-ed25519")
+        conn = await asyncssh.connect(
+            "127.0.0.1",
+            port=port,
+            username=username,
+            client_keys=[private_key],
+            known_hosts=None,
+        )
+        try:
+            yield conn
+        finally:
+            conn.close()
+            await conn.wait_closed()
+
+
+class TestRegistrationErrors(BaseSshTests):
+    """Test class for errors related to registartion."""
+
+    @pytest.mark.enable_registration(True)
+    @pytest.mark.registration_sources("192.0.2.0/24")
+    @pytest.mark.asyncio
+    async def test_register_client_invalid_source(
+        self, ssh_server: SshServerFixture
+    ) -> None:
+        """Test client registration from a network that's not permitted."""
+        _, port = ssh_server
+        with pytest.raises(asyncssh.misc.PermissionDenied):
+            async with self.unregistered_client("stranger", port) as conn:
+                async with conn.create_process("register") as process:
+                    stdout, stderr = process.collect_output()
+                    print(f"{stdout=!r}\n{stderr=!r}")
+                    if isinstance(stdout, str):
+                        assert "Enter public key" not in stdout
+                    result = await process.wait()
+                    assert result.exit_status == 1
+
+    @pytest.mark.enable_registration(True)
+    @pytest.mark.registration_sources("127.0.0.1")
+    @pytest.mark.asyncio
+    async def test_invalid_key_type(self, ssh_server: SshServerFixture) -> None:
+        """Test registration with an unsupported key."""
+        _, port = ssh_server
+        private_key = asyncssh.generate_private_key("ssh-ed25519")
+        public_key = private_key.export_public_key().decode().rstrip() + "\n"
+
+        async with self.ssh_connection("stranger", port, private_key) as conn:
+            async with conn.create_process("register") as process:
+                output = await process.stdout.readline()
+                assert "Enter public key" in output
+                stdout, stderr = await process.communicate(public_key)
+                print(f"{stdout=!r}, {stderr=!r}")
+                assert stderr == "Error: Invalid key type: Only RSA keys are supported."
+                result = await process.wait()
+                assert result.exit_status == 1
+
+    @pytest.mark.enable_registration(True)
+    @pytest.mark.registration_sources("127.0.0.1")
+    @pytest.mark.asyncio
+    async def test_invalid_key(self, ssh_server: SshServerFixture) -> None:
+        """Test registration with a bogus string as key.."""
+        _, port = ssh_server
+        private_key = asyncssh.generate_private_key("ssh-ed25519")
+        public_key = f"ssh-test {'A' * 544}\n"
+
+        async with self.ssh_connection("stranger", port, private_key) as conn:
+            async with conn.create_process("register") as process:
+                output = await process.stdout.readline()
+                assert "Enter public key" in output
+                stdout, stderr = await process.communicate(public_key)
+                print(f"{stdout=!r}, {stderr=!r}")
+                assert stderr == "Error: Invalid key type: Only RSA keys are supported."
+                result = await process.wait()
+                assert result.exit_status == 1
+
+
+class TestCommandErrors(BaseSshTests):
+    """Tests various errors around commands."""
+
+    @pytest.mark.asyncio
+    async def test_invalid_command(
+        self, ssh_command_runner: CommandRunner, client_registry: ClientRegistry
+    ) -> None:
+        """Test sending an invalid command."""
+        await client_registry["add_client"]("test")
+
+        result = await ssh_command_runner("test", "cat /etc/passwd")
+
+        assert result.exit_status == 1
+        stderr = result.stderr or ""
+        assert stderr == "Error: Unsupported command."
+
+    @pytest.mark.asyncio
+    async def test_no_command(
+        self, ssh_server: SshServerFixture, client_registry: ClientRegistry
+    ) -> None:
+        """Test sending no command."""
+        await client_registry["add_client"]("test")
+        _, port = ssh_server
+        client_key = client_registry["clients"]["test"]
+        async with self.ssh_connection("test", port, client_key.private_key) as conn:
+            async with conn.create_process() as process:
+                stdout, stderr = await process.communicate()
+                print(f"{stdout=!r}, {stderr=!r}")
+                assert stderr == "Error: No command was received from the client."
+                result = await process.wait()
+                assert result.exit_status == 1
+
+    @pytest.mark.asyncio
+    async def test_deny_client_connection(
+        self, ssh_command_runner: CommandRunner, client_registry: ClientRegistry
+    ) -> None:
+        """Test client that is not permitted to connect."""
+        await client_registry["add_client"](
+            "test-client",
+            ["mysecret"],
+            ["192.0.2.0/24"],
+        )
+
+        with pytest.raises(asyncssh.misc.PermissionDenied):
+            await ssh_command_runner("test-client", "get_secret mysecret")

tests/packages/sshd/test_register.py

@@ -5,6 +5,7 @@ import pytest
 from .types import ClientRegistry, CommandRunner, ProcessRunner
 
 
+@pytest.mark.enable_registration(True)
 @pytest.mark.asyncio
 async def test_register_client(
     ssh_session: ProcessRunner,

tests/packages/sshd/types.py

@@ -31,6 +31,8 @@ class ClientKey:
     name: str
     private_key: asyncssh.SSHKey
     public_key: str
+    policies: list[str] | None = None
+
 
 
 class AddClientFun(Protocol):

uv.lock

@@ -6,7 +6,6 @@ members = [
     "sshecret",
     "sshecret-admin",
     "sshecret-backend",
-    "sshecret-client",
     "sshecret-sshd",
 ]
 
@@ -213,6 +212,35 @@ wheels = [
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 ]
 
+[[package]]
+name = "coverage"
+version = "7.8.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/19/4f/2251e65033ed2ce1e68f00f91a0294e0f80c80ae8c3ebbe2f12828c4cd53/coverage-7.8.0.tar.gz", hash = "sha256:7a3d62b3b03b4b6fd41a085f3574874cf946cb4604d2b4d3e8dca8cd570ca501", size = 811872 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/f3/21/87e9b97b568e223f3438d93072479c2f36cc9b3f6b9f7094b9d50232acc0/coverage-7.8.0-cp313-cp313-macosx_10_13_x86_64.whl", hash = "sha256:5ac46d0c2dd5820ce93943a501ac5f6548ea81594777ca585bf002aa8854cacd", size = 211708 },
+    { url = "https://files.pythonhosted.org/packages/75/be/882d08b28a0d19c9c4c2e8a1c6ebe1f79c9c839eb46d4fca3bd3b34562b9/coverage-7.8.0-cp313-cp313-macosx_11_0_arm64.whl", hash = "sha256:771eb7587a0563ca5bb6f622b9ed7f9d07bd08900f7589b4febff05f469bea00", size = 211981 },
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+    { url = "https://files.pythonhosted.org/packages/22/70/c10c77cd77970ac965734fe3419f2c98665f6e982744a9bfb0e749d298f4/coverage-7.8.0-cp313-cp313-musllinux_1_2_aarch64.whl", hash = "sha256:581a40c7b94921fffd6457ffe532259813fc68eb2bdda60fa8cc343414ce3733", size = 244633 },
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+source = { registry = "https://pypi.org/simple" }
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@@ -950,8 +957,10 @@ dev = [
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 test = [
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     { name = "pytest" },
     { name = "pytest-asyncio" },
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@@ -979,8 +988,10 @@ dev = [
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