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|
"""
Tests for auth methods on the SMTP class.
"""
import asyncio
import base64
import pytest
from aiosmtplib import SMTP
from aiosmtplib.auth import (
auth_crammd5_verify,
auth_login_encode,
auth_plain_encode,
auth_xoauth2_encode,
)
from aiosmtplib.errors import SMTPAuthenticationError, SMTPException
from aiosmtplib.response import SMTPResponse
from aiosmtplib.typing import SMTPStatus
from .auth import DummySMTPAuth
SUCCESS_RESPONSE = SMTPResponse(SMTPStatus.auth_successful, "OK")
FAILURE_RESPONSE = SMTPResponse(SMTPStatus.auth_failed, "Nope")
async def test_login_without_extension_raises_error(mock_auth: DummySMTPAuth) -> None:
mock_auth.esmtp_extensions = {}
with pytest.raises(SMTPException) as excinfo:
await mock_auth.login("username", "bogus")
assert "Try connecting via TLS" not in excinfo.value.args[0]
async def test_login_unknown_method_raises_error(mock_auth: DummySMTPAuth) -> None:
mock_auth.AUTH_METHODS = ("fakeauth",)
mock_auth.server_auth_methods = ["fakeauth"]
with pytest.raises(RuntimeError):
await mock_auth.login("username", "bogus")
async def test_login_without_method_raises_error(mock_auth: DummySMTPAuth) -> None:
mock_auth.server_auth_methods = []
with pytest.raises(SMTPException):
await mock_auth.login("username", "bogus")
async def test_login_tries_all_methods(mock_auth: DummySMTPAuth) -> None:
responses = [
FAILURE_RESPONSE, # CRAM-MD5
FAILURE_RESPONSE, # PLAIN
(SMTPStatus.auth_continue, "VXNlcm5hbWU6"), # LOGIN continue
SUCCESS_RESPONSE, # LOGIN success
]
mock_auth.responses.extend(responses)
await mock_auth.login("username", "thirdtimelucky")
async def test_login_all_methods_fail_raises_error(mock_auth: DummySMTPAuth) -> None:
responses = [
FAILURE_RESPONSE, # CRAM-MD5
FAILURE_RESPONSE, # PLAIN
FAILURE_RESPONSE, # LOGIN
]
mock_auth.responses.extend(responses)
with pytest.raises(SMTPAuthenticationError):
await mock_auth.login("username", "bogus")
@pytest.mark.parametrize(
"username,password",
[("test", "test"), ("admin124", "$3cr3t$"), ("føø", "bär€")],
ids=["test user", "admin user", "utf-8 user"],
)
async def test_auth_plain_success(
mock_auth: DummySMTPAuth, username: str, password: str
) -> None:
"""
Check that auth_plain base64 encodes the username/password given.
"""
mock_auth.responses.append(SUCCESS_RESPONSE)
await mock_auth.auth_plain(username, password)
encoded = auth_plain_encode(username, password)
assert mock_auth.received_commands == [b"AUTH PLAIN " + encoded]
async def test_auth_plain_success_bytes(mock_auth: DummySMTPAuth) -> None:
"""
Check that auth_plain base64 encodes the username/password when given as bytes.
"""
username = "ภาษา".encode("tis-620")
password = "ไทย".encode("tis-620")
mock_auth.responses.append(SUCCESS_RESPONSE)
await mock_auth.auth_plain(username, password)
encoded = auth_plain_encode(username, password)
assert mock_auth.received_commands == [b"AUTH PLAIN " + encoded]
async def test_auth_plain_error(mock_auth: DummySMTPAuth) -> None:
mock_auth.responses.append(FAILURE_RESPONSE)
with pytest.raises(SMTPAuthenticationError):
await mock_auth.auth_plain("username", "bogus")
@pytest.mark.parametrize(
"username,password",
[("test", "test"), ("admin124", "$3cr3t$"), ("føø", "bär€")],
ids=["test user", "admin user", "utf-8 user"],
)
async def test_auth_login_success(
mock_auth: DummySMTPAuth, username: str, password: str
) -> None:
continue_response = (SMTPStatus.auth_continue, "VXNlcm5hbWU6")
mock_auth.responses.extend([continue_response, SUCCESS_RESPONSE])
await mock_auth.auth_login(username, password)
encoded_username, encoded_password = auth_login_encode(username, password)
assert mock_auth.received_commands == [
b"AUTH LOGIN " + encoded_username,
encoded_password,
]
async def test_auth_login_success_bytes(mock_auth: DummySMTPAuth) -> None:
continue_response = (SMTPStatus.auth_continue, "VXNlcm5hbWU6")
mock_auth.responses.extend([continue_response, SUCCESS_RESPONSE])
username = "ภาษา".encode("tis-620")
password = "ไทย".encode("tis-620")
await mock_auth.auth_login(username, password)
encoded_username, encoded_password = auth_login_encode(username, password)
assert mock_auth.received_commands == [
b"AUTH LOGIN " + encoded_username,
encoded_password,
]
async def test_auth_login_error(mock_auth: DummySMTPAuth) -> None:
mock_auth.responses.append(FAILURE_RESPONSE)
with pytest.raises(SMTPAuthenticationError):
await mock_auth.auth_login("username", "bogus")
async def test_auth_plain_continue_error(mock_auth: DummySMTPAuth) -> None:
continue_response = (SMTPStatus.auth_continue, "VXNlcm5hbWU6")
mock_auth.responses.extend([continue_response, FAILURE_RESPONSE])
with pytest.raises(SMTPAuthenticationError):
await mock_auth.auth_login("username", "bogus")
@pytest.mark.parametrize(
"username,password",
[("test", "test"), ("admin124", "$3cr3t$"), ("føø", "bär€")],
ids=["test user", "admin user", "utf-8 user"],
)
async def test_auth_crammd5_success(
mock_auth: DummySMTPAuth, username: str, password: str
) -> None:
continue_response = (
SMTPStatus.auth_continue,
base64.b64encode(b"secretteststring").decode("utf-8"),
)
mock_auth.responses.extend([continue_response, SUCCESS_RESPONSE])
await mock_auth.auth_crammd5(username, password)
password_bytes = password.encode("utf-8")
username_bytes = username.encode("utf-8")
response_bytes = continue_response[1].encode("utf-8")
expected_command = auth_crammd5_verify(
username_bytes, password_bytes, response_bytes
)
assert mock_auth.received_commands == [b"AUTH CRAM-MD5", expected_command]
async def test_auth_crammd5_success_bytes(mock_auth: DummySMTPAuth) -> None:
continue_response = (
SMTPStatus.auth_continue,
base64.b64encode(b"secretteststring").decode("utf-8"),
)
mock_auth.responses.extend([continue_response, SUCCESS_RESPONSE])
username = "ภาษา".encode("tis-620")
password = "ไทย".encode("tis-620")
await mock_auth.auth_crammd5(username, password)
response_bytes = continue_response[1].encode("utf-8")
expected_command = auth_crammd5_verify(username, password, response_bytes)
assert mock_auth.received_commands == [b"AUTH CRAM-MD5", expected_command]
async def test_auth_crammd5_initial_error(mock_auth: DummySMTPAuth) -> None:
mock_auth.responses.append(FAILURE_RESPONSE)
with pytest.raises(SMTPAuthenticationError):
await mock_auth.auth_crammd5("username", "bogus")
async def test_auth_crammd5_continue_error(mock_auth: DummySMTPAuth) -> None:
continue_response = (SMTPStatus.auth_continue, "VXNlcm5hbWU6")
mock_auth.responses.extend([continue_response, FAILURE_RESPONSE])
with pytest.raises(SMTPAuthenticationError):
await mock_auth.auth_crammd5("username", "bogus")
async def test_login_without_starttls_exception(
smtp_client: SMTP,
smtpd_server: asyncio.AbstractServer,
auth_username: str,
auth_password: str,
) -> None:
async with smtp_client:
with pytest.raises(SMTPException) as excinfo:
await smtp_client.login(auth_username, auth_password)
assert "Try connecting via TLS" in excinfo.value.args[0]
@pytest.mark.parametrize(
"username,token",
[
("test@example.com", "ya29.token123"),
("user@gmail.com", "access_token_here"),
("føø@example.com", "bär€_token"),
],
ids=["test user", "gmail user", "utf-8 user"],
)
async def test_auth_xoauth2_success(
mock_auth: DummySMTPAuth, username: str, token: str
) -> None:
"""Check that auth_xoauth2 base64 encodes the username/token correctly."""
mock_auth.responses.append(SUCCESS_RESPONSE)
await mock_auth.auth_xoauth2(username, token)
encoded = auth_xoauth2_encode(username, token)
assert mock_auth.received_commands == [b"AUTH XOAUTH2 " + encoded]
async def test_auth_xoauth2_success_bytes(mock_auth: DummySMTPAuth) -> None:
"""Check that auth_xoauth2 works with bytes input."""
username = b"user@example.com"
token = b"access_token_bytes"
mock_auth.responses.append(SUCCESS_RESPONSE)
await mock_auth.auth_xoauth2(username, token)
encoded = auth_xoauth2_encode(username, token)
assert mock_auth.received_commands == [b"AUTH XOAUTH2 " + encoded]
async def test_auth_xoauth2_error(mock_auth: DummySMTPAuth) -> None:
"""Check that auth_xoauth2 raises on failure response."""
mock_auth.responses.append(FAILURE_RESPONSE)
with pytest.raises(SMTPAuthenticationError):
await mock_auth.auth_xoauth2("user@example.com", "bad_token")
async def test_auth_xoauth2_challenge_error(mock_auth: DummySMTPAuth) -> None:
"""
Check that auth_xoauth2 handles the error challenge flow.
On failure, server sends 334 with base64-encoded error JSON,
client sends empty response, then gets the final 535 error.
"""
# Server sends error challenge (334), then final error (535)
challenge_response = (SMTPStatus.auth_continue, "eyJzdGF0dXMiOiI0MDAifQ==")
mock_auth.responses.extend([challenge_response, FAILURE_RESPONSE])
with pytest.raises(SMTPAuthenticationError):
await mock_auth.auth_xoauth2("user@example.com", "expired_token")
# Verify we sent the initial auth and then empty response
encoded = auth_xoauth2_encode("user@example.com", "expired_token")
assert mock_auth.received_commands == [b"AUTH XOAUTH2 " + encoded, b""]
async def test_maybe_login_with_oauth_token_generator(mock_auth: DummySMTPAuth) -> None:
"""Test that _maybe_login_on_connect uses oauth_token_generator when provided."""
mock_auth.server_auth_methods = ["xoauth2", "plain", "login"]
mock_auth._login_username = "user@example.com"
async def get_token() -> str:
return "test_oauth_token"
mock_auth._oauth_token_generator = get_token
mock_auth.responses.append(SUCCESS_RESPONSE)
await mock_auth._maybe_login_on_connect()
encoded = auth_xoauth2_encode("user@example.com", "test_oauth_token")
assert mock_auth.received_commands == [b"AUTH XOAUTH2 " + encoded]
|
