666 lines
24 KiB
Python
666 lines
24 KiB
Python
"""Unit: pure-logic core of the egress mitmproxy addon (PRD 0017, PRD 0053).
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These tests target `egress_addon_core` — the host-importable
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half of the addon."""
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import http.server
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import subprocess
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import tempfile
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import threading
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import time
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import unittest
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from pathlib import Path
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from urllib.parse import urlsplit
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from bot_bottle.egress_addon_core import (
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Decision,
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HeaderMatch,
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MatchEntry,
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PathMatch,
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Route,
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decide,
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evaluate_matches,
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is_git_push_request,
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load_routes,
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match_route,
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parse_routes,
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)
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# --- parse_routes --------------------------------------------------------
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class TestParseRoutes(unittest.TestCase):
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def test_minimal_route(self):
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routes = parse_routes({"routes": [{"host": "api.github.com"}]})
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self.assertEqual(1, len(routes))
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self.assertEqual("api.github.com", routes[0].host)
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self.assertEqual((), routes[0].matches)
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self.assertEqual("", routes[0].auth_scheme)
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self.assertEqual("", routes[0].token_env)
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def test_full_route(self):
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routes = parse_routes({"routes": [{
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"host": "api.github.com",
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"matches": [
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{"paths": [{"type": "prefix", "value": "/repos/x/"}]},
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],
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"auth_scheme": "Bearer",
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"token_env": "EGRESS_TOKEN_0",
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}]})
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r = routes[0]
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self.assertEqual(1, len(r.matches))
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self.assertEqual(1, len(r.matches[0].paths))
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self.assertEqual("prefix", r.matches[0].paths[0].type)
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self.assertEqual("/repos/x/", r.matches[0].paths[0].value)
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self.assertEqual("Bearer", r.auth_scheme)
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self.assertEqual("EGRESS_TOKEN_0", r.token_env)
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def test_order_preserved(self):
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routes = parse_routes({"routes": [
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{"host": "a.example"},
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{"host": "b.example"},
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{"host": "c.example"},
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]})
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self.assertEqual(
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["a.example", "b.example", "c.example"],
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[r.host for r in routes],
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)
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def test_partial_auth_pair_rejected(self):
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with self.assertRaises(ValueError) as cm:
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parse_routes({"routes": [{
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"host": "x.example",
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"auth_scheme": "Bearer",
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}]})
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self.assertIn("both set or both empty", str(cm.exception))
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def test_partial_auth_other_direction_rejected(self):
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with self.assertRaises(ValueError) as cm:
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parse_routes({"routes": [{
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"host": "x.example",
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"token_env": "EGRESS_TOKEN_0",
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}]})
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self.assertIn("both set or both empty", str(cm.exception))
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def test_top_level_must_be_object(self):
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with self.assertRaises(ValueError):
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parse_routes(["not", "an", "object"])
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def test_routes_must_be_list(self):
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with self.assertRaises(ValueError):
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parse_routes({"routes": "not a list"})
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def test_route_must_have_host(self):
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with self.assertRaises(ValueError):
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parse_routes({"routes": [{}]})
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def test_unknown_key_rejected(self):
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with self.assertRaises(ValueError):
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parse_routes({"routes": [{
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"host": "x.example",
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"path_allowlist": ["/x/"],
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}]})
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class TestParseMatchEntries(unittest.TestCase):
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def test_path_prefix_default_type(self):
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routes = parse_routes({"routes": [{
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"host": "x.example",
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"matches": [{"paths": [{"value": "/api/"}]}],
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}]})
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self.assertEqual("prefix", routes[0].matches[0].paths[0].type)
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def test_path_exact(self):
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routes = parse_routes({"routes": [{
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"host": "x.example",
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"matches": [{"paths": [{"type": "exact", "value": "/health"}]}],
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}]})
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self.assertEqual("exact", routes[0].matches[0].paths[0].type)
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def test_path_regex(self):
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routes = parse_routes({"routes": [{
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"host": "x.example",
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"matches": [{"paths": [{"type": "regex", "value": "^/v[0-9]+/"}]}],
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}]})
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pm = routes[0].matches[0].paths[0]
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self.assertEqual("regex", pm.type)
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self.assertIsNotNone(pm.compiled)
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def test_path_bad_regex_rejected(self):
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with self.assertRaises(ValueError) as cm:
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parse_routes({"routes": [{
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"host": "x.example",
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"matches": [{"paths": [{"type": "regex", "value": "[bad"}]}],
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}]})
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self.assertIn("failed to compile", str(cm.exception))
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def test_path_prefix_must_start_with_slash(self):
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with self.assertRaises(ValueError):
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parse_routes({"routes": [{
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"host": "x.example",
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"matches": [{"paths": [{"value": "no-slash"}]}],
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}]})
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def test_methods_case_insensitive(self):
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routes = parse_routes({"routes": [{
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"host": "x.example",
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"matches": [{"methods": ["get", "Post"]}],
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}]})
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self.assertEqual(("GET", "POST"), routes[0].matches[0].methods)
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def test_invalid_method_rejected(self):
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with self.assertRaises(ValueError):
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parse_routes({"routes": [{
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"host": "x.example",
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"matches": [{"methods": ["BOGUS"]}],
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}]})
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def test_headers_exact_default(self):
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routes = parse_routes({"routes": [{
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"host": "x.example",
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"matches": [{"headers": [
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{"name": "Content-Type", "value": "application/json"},
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]}],
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}]})
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hm = routes[0].matches[0].headers[0]
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self.assertEqual("Content-Type", hm.name)
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self.assertEqual("application/json", hm.value)
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self.assertEqual("exact", hm.type)
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def test_headers_regex(self):
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routes = parse_routes({"routes": [{
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"host": "x.example",
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"matches": [{"headers": [
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{"name": "Accept", "value": "application/.*", "type": "regex"},
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]}],
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}]})
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hm = routes[0].matches[0].headers[0]
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self.assertEqual("regex", hm.type)
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self.assertIsNotNone(hm.compiled)
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def test_unknown_match_key_rejected(self):
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with self.assertRaises(ValueError):
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parse_routes({"routes": [{
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"host": "x.example",
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"matches": [{"paths": [], "bogus": True}],
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}]})
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class TestParseDlp(unittest.TestCase):
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def test_dlp_omitted_means_all_enabled(self):
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routes = parse_routes({"routes": [{"host": "x.example"}]})
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self.assertIsNone(routes[0].outbound_detectors)
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self.assertIsNone(routes[0].inbound_detectors)
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def test_dlp_false_disables(self):
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routes = parse_routes({"routes": [{
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"host": "x.example",
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"dlp": {
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"outbound_detectors": False,
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"inbound_detectors": False,
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},
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}]})
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self.assertEqual((), routes[0].outbound_detectors)
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self.assertEqual((), routes[0].inbound_detectors)
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def test_dlp_named_detectors(self):
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routes = parse_routes({"routes": [{
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"host": "x.example",
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"dlp": {
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"outbound_detectors": ["token_patterns"],
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"inbound_detectors": ["naive_injection_detection"],
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},
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}]})
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self.assertEqual(("token_patterns",), routes[0].outbound_detectors)
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self.assertEqual(("naive_injection_detection",), routes[0].inbound_detectors)
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def test_dlp_unknown_detector_rejected(self):
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with self.assertRaises(ValueError):
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parse_routes({"routes": [{
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"host": "x.example",
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"dlp": {"outbound_detectors": ["bogus"]},
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}]})
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def test_dlp_unknown_key_rejected(self):
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with self.assertRaises(ValueError):
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parse_routes({"routes": [{
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"host": "x.example",
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"dlp": {"wat": True},
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}]})
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# --- load_routes ---------------------------------------------------------
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class TestLoadRoutes(unittest.TestCase):
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def test_yaml_text_round_trip(self):
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routes = load_routes(
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'routes:\n'
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' - host: "api.example"\n'
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)
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self.assertEqual(1, len(routes))
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self.assertEqual("api.example", routes[0].host)
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def test_full_route_shape_parses(self):
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routes = load_routes(
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'routes:\n'
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' - host: "api.example"\n'
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' auth_scheme: "Bearer"\n'
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' token_env: "EGRESS_TOKEN_0"\n'
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' matches:\n'
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' - paths:\n'
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' - value: "/v1/"\n'
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' - type: "exact"\n'
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' value: "/messages"\n'
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)
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self.assertEqual(1, len(routes))
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r = routes[0]
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self.assertEqual("api.example", r.host)
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self.assertEqual("Bearer", r.auth_scheme)
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self.assertEqual("EGRESS_TOKEN_0", r.token_env)
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self.assertEqual(1, len(r.matches))
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self.assertEqual(2, len(r.matches[0].paths))
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def test_empty_routes_list(self):
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routes = load_routes("routes: []\n")
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self.assertEqual((), routes)
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def test_invalid_yaml_raises_value_error(self):
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with self.assertRaises(ValueError):
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load_routes("routes:\n\t- host: x\n")
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# --- evaluate_matches ---------------------------------------------------
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class TestEvaluateMatches(unittest.TestCase):
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def test_empty_matches_allows_all(self):
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route = Route(host="x.example")
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self.assertTrue(evaluate_matches(route, "/anything"))
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def test_prefix_match(self):
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route = Route(host="x.example", matches=(
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MatchEntry(paths=(PathMatch(type="prefix", value="/api/v1"),)),
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))
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self.assertTrue(evaluate_matches(route, "/api/v1/foo"))
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self.assertTrue(evaluate_matches(route, "/api/v1"))
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self.assertFalse(evaluate_matches(route, "/api/v10"))
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self.assertFalse(evaluate_matches(route, "/other"))
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def test_prefix_with_trailing_slash(self):
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route = Route(host="x.example", matches=(
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MatchEntry(paths=(PathMatch(type="prefix", value="/api/"),)),
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))
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self.assertTrue(evaluate_matches(route, "/api/foo"))
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self.assertFalse(evaluate_matches(route, "/apifoo"))
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def test_exact_match(self):
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route = Route(host="x.example", matches=(
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MatchEntry(paths=(PathMatch(type="exact", value="/health"),)),
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))
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self.assertTrue(evaluate_matches(route, "/health"))
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self.assertFalse(evaluate_matches(route, "/health/deep"))
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self.assertFalse(evaluate_matches(route, "/other"))
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def test_regex_match(self):
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import re
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route = Route(host="x.example", matches=(
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MatchEntry(paths=(PathMatch(
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type="regex", value=r"^/v[0-9]+/",
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compiled=re.compile(r"^/v[0-9]+/"),
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),)),
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))
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self.assertTrue(evaluate_matches(route, "/v1/messages"))
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self.assertTrue(evaluate_matches(route, "/v42/data"))
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self.assertFalse(evaluate_matches(route, "/api/v1/"))
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def test_method_filter(self):
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route = Route(host="x.example", matches=(
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MatchEntry(methods=("GET", "HEAD")),
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))
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self.assertTrue(evaluate_matches(route, "/any", "GET"))
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self.assertTrue(evaluate_matches(route, "/any", "HEAD"))
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self.assertFalse(evaluate_matches(route, "/any", "POST"))
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def test_header_exact_match(self):
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route = Route(host="x.example", matches=(
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MatchEntry(headers=(
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HeaderMatch(name="Content-Type", value="application/json"),
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)),
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))
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self.assertTrue(evaluate_matches(
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route, "/any", "GET",
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{"content-type": "application/json"},
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))
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self.assertFalse(evaluate_matches(
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route, "/any", "GET",
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{"content-type": "text/html"},
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))
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self.assertFalse(evaluate_matches(route, "/any", "GET", {}))
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def test_header_regex_match(self):
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import re
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route = Route(host="x.example", matches=(
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MatchEntry(headers=(
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HeaderMatch(
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name="Accept", value=r"application/.*",
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type="regex", compiled=re.compile(r"application/.*"),
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),
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)),
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))
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self.assertTrue(evaluate_matches(
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route, "/any", "GET", {"accept": "application/json"},
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))
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self.assertFalse(evaluate_matches(
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route, "/any", "GET", {"accept": "text/html"},
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))
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def test_and_within_entry(self):
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route = Route(host="x.example", matches=(
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MatchEntry(
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paths=(PathMatch(type="prefix", value="/api"),),
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methods=("POST",),
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),
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))
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self.assertTrue(evaluate_matches(route, "/api/data", "POST"))
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self.assertFalse(evaluate_matches(route, "/api/data", "GET"))
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self.assertFalse(evaluate_matches(route, "/other", "POST"))
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def test_or_across_entries(self):
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route = Route(host="x.example", matches=(
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MatchEntry(
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paths=(PathMatch(type="prefix", value="/read"),),
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methods=("GET",),
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),
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MatchEntry(
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paths=(PathMatch(type="exact", value="/write"),),
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methods=("POST",),
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),
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))
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self.assertTrue(evaluate_matches(route, "/read/foo", "GET"))
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self.assertTrue(evaluate_matches(route, "/write", "POST"))
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self.assertFalse(evaluate_matches(route, "/read/foo", "POST"))
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self.assertFalse(evaluate_matches(route, "/write", "GET"))
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def test_multiple_paths_or_within_entry(self):
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route = Route(host="x.example", matches=(
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MatchEntry(paths=(
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PathMatch(type="prefix", value="/a"),
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PathMatch(type="prefix", value="/b"),
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)),
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))
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self.assertTrue(evaluate_matches(route, "/a/foo"))
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self.assertTrue(evaluate_matches(route, "/b/bar"))
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self.assertFalse(evaluate_matches(route, "/c/baz"))
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# --- match_route ---------------------------------------------------------
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class TestMatchRoute(unittest.TestCase):
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ROUTES = (
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Route(host="api.github.com"),
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Route(host="github.com", matches=(
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MatchEntry(paths=(PathMatch(type="prefix", value="/x/"),)),
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)),
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)
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def test_exact_match(self):
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r = match_route(self.ROUTES, "api.github.com")
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self.assertIsNotNone(r)
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self.assertEqual("api.github.com", r.host) # type: ignore
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def test_case_insensitive(self):
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r = match_route(self.ROUTES, "API.GitHub.COM")
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self.assertIsNotNone(r)
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self.assertEqual("api.github.com", r.host) # type: ignore
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def test_no_match_returns_none(self):
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self.assertIsNone(match_route(self.ROUTES, "elsewhere.example"))
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def test_no_substring_or_prefix_matching(self):
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self.assertIsNone(match_route(self.ROUTES, "evil.api.github.com"))
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def test_wildcard_hosts_not_supported(self):
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routes = (Route(host="*.example.com"),)
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self.assertIsNone(match_route(routes, "foo.example.com"))
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self.assertIsNone(match_route(routes, "example.com"))
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# --- decide --------------------------------------------------------------
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class TestDecide(unittest.TestCase):
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def test_no_matching_route_blocks(self):
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d = decide((), "elsewhere.example", "/anything", {})
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self.assertEqual("block", d.action)
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self.assertIn("allowlist", d.reason)
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self.assertIn("'elsewhere.example'", d.reason)
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def test_matches_prefix_forwards(self):
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d = decide(
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(Route(host="github.com", matches=(
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MatchEntry(paths=(PathMatch(type="prefix", value="/didericis/"),)),
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)),),
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"github.com", "/didericis/repo", {},
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)
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self.assertEqual("forward", d.action)
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def test_matches_miss_blocks(self):
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d = decide(
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(Route(host="github.com", matches=(
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MatchEntry(paths=(PathMatch(type="prefix", value="/didericis/"),)),
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)),),
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"github.com", "/somebody-else/secret", {},
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)
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self.assertEqual("block", d.action)
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self.assertIn("matches", d.reason)
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self.assertIn("'github.com'", d.reason)
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def test_empty_matches_means_no_constraint(self):
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d = decide(
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(Route(host="api.anthropic.com"),),
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"api.anthropic.com", "/v1/messages", {},
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)
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self.assertEqual("forward", d.action)
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def test_auth_injection_uses_environ_value(self):
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d = decide(
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(Route(host="api.github.com", auth_scheme="Bearer",
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token_env="EGRESS_TOKEN_0"),),
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"api.github.com", "/repos/x", {"EGRESS_TOKEN_0": "the-token"},
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)
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self.assertEqual("forward", d.action)
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self.assertEqual("Bearer the-token", d.inject_authorization)
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def test_auth_with_missing_token_env_blocks(self):
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d = decide(
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(Route(host="api.github.com", auth_scheme="Bearer",
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token_env="EGRESS_TOKEN_0"),),
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"api.github.com", "/repos/x", {},
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)
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self.assertEqual("block", d.action)
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self.assertIn("EGRESS_TOKEN_0", d.reason)
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def test_auth_with_empty_token_env_blocks(self):
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d = decide(
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(Route(host="api.github.com", auth_scheme="Bearer",
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token_env="EGRESS_TOKEN_0"),),
|
|
"api.github.com", "/repos/x", {"EGRESS_TOKEN_0": ""},
|
|
)
|
|
self.assertEqual("block", d.action)
|
|
|
|
def test_unauthenticated_route_skips_injection(self):
|
|
d = decide(
|
|
(Route(host="github.com", matches=(
|
|
MatchEntry(paths=(PathMatch(type="prefix", value="/x/"),)),
|
|
)),),
|
|
"github.com", "/x/repo", {"GH_PAT": "should-not-appear"},
|
|
)
|
|
self.assertEqual("forward", d.action)
|
|
self.assertIsNone(d.inject_authorization)
|
|
|
|
def test_token_token_scheme(self):
|
|
d = decide(
|
|
(Route(host="git.example", auth_scheme="token",
|
|
token_env="EGRESS_TOKEN_0"),),
|
|
"git.example", "/api/v1/repos", {"EGRESS_TOKEN_0": "abc"},
|
|
)
|
|
self.assertEqual("token abc", d.inject_authorization)
|
|
|
|
def test_method_matching(self):
|
|
route = Route(host="x.example", matches=(
|
|
MatchEntry(methods=("GET",)),
|
|
))
|
|
d = decide((route,), "x.example", "/any", {},
|
|
request_method="GET")
|
|
self.assertEqual("forward", d.action)
|
|
d = decide((route,), "x.example", "/any", {},
|
|
request_method="POST")
|
|
self.assertEqual("block", d.action)
|
|
|
|
def test_header_matching(self):
|
|
route = Route(host="x.example", matches=(
|
|
MatchEntry(headers=(
|
|
HeaderMatch(name="Content-Type", value="application/json"),
|
|
)),
|
|
))
|
|
d = decide((route,), "x.example", "/any", {},
|
|
request_headers={"content-type": "application/json"})
|
|
self.assertEqual("forward", d.action)
|
|
d = decide((route,), "x.example", "/any", {},
|
|
request_headers={"content-type": "text/html"})
|
|
self.assertEqual("block", d.action)
|
|
|
|
|
|
# --- Decision dataclass --------------------------------------------------
|
|
|
|
|
|
class TestDecisionDefaults(unittest.TestCase):
|
|
def test_forward_default_has_no_reason_or_inject(self):
|
|
d = Decision(action="forward")
|
|
self.assertEqual("", d.reason)
|
|
self.assertIsNone(d.inject_authorization)
|
|
|
|
|
|
# --- is_git_push_request ------------------------------------------------
|
|
|
|
|
|
class TestIsGitPushRequest(unittest.TestCase):
|
|
def test_post_git_receive_pack_endpoint(self):
|
|
self.assertTrue(is_git_push_request("/owner/repo.git/git-receive-pack", ""))
|
|
|
|
def test_info_refs_with_receive_pack_service(self):
|
|
self.assertTrue(is_git_push_request(
|
|
"/owner/repo.git/info/refs",
|
|
"service=git-receive-pack",
|
|
))
|
|
|
|
def test_info_refs_with_extra_query_params(self):
|
|
self.assertTrue(is_git_push_request(
|
|
"/owner/repo.git/info/refs",
|
|
"foo=bar&service=git-receive-pack&z=1",
|
|
))
|
|
self.assertTrue(is_git_push_request(
|
|
"/owner/repo.git/info/refs",
|
|
"service=git-receive-pack&foo=bar",
|
|
))
|
|
|
|
def test_fetch_endpoints_not_blocked(self):
|
|
self.assertFalse(is_git_push_request(
|
|
"/owner/repo.git/info/refs",
|
|
"service=git-upload-pack",
|
|
))
|
|
self.assertFalse(is_git_push_request(
|
|
"/owner/repo.git/git-upload-pack", "",
|
|
))
|
|
|
|
def test_info_refs_without_service_not_blocked(self):
|
|
self.assertFalse(is_git_push_request("/x/info/refs", ""))
|
|
|
|
def test_unrelated_paths_not_blocked(self):
|
|
self.assertFalse(is_git_push_request("/repos/owner/repo", ""))
|
|
self.assertFalse(is_git_push_request("/v1/messages", ""))
|
|
self.assertFalse(is_git_push_request("/", ""))
|
|
|
|
|
|
class TestGitPushBlockFailFast(unittest.TestCase):
|
|
def test_real_git_push_fails_fast_when_egress_blocks_receive_pack(self):
|
|
seen_paths: list[str] = []
|
|
|
|
class Handler(http.server.BaseHTTPRequestHandler):
|
|
def do_GET(self):
|
|
self._handle()
|
|
|
|
def do_POST(self):
|
|
self._handle()
|
|
|
|
def _handle(self):
|
|
parsed = urlsplit(self.path)
|
|
seen_paths.append(self.path)
|
|
if is_git_push_request(parsed.path, parsed.query):
|
|
body = (
|
|
b"egress: git push over HTTPS is not supported; "
|
|
b"use the bottle.git SSH path (gitleaks-scanned by "
|
|
b"git-gate's pre-receive hook)."
|
|
)
|
|
self.send_response(403)
|
|
self.send_header("Content-Type", "text/plain; charset=utf-8")
|
|
self.send_header("Content-Length", str(len(body)))
|
|
self.end_headers()
|
|
self.wfile.write(body)
|
|
return
|
|
self.send_response(404)
|
|
self.send_header("Content-Length", "0")
|
|
self.end_headers()
|
|
|
|
def log_message(self, _fmt, *_args): # type: ignore
|
|
pass
|
|
|
|
server = http.server.ThreadingHTTPServer(("127.0.0.1", 0), Handler)
|
|
thread = threading.Thread(target=server.serve_forever, daemon=True)
|
|
thread.start()
|
|
self.addCleanup(server.shutdown)
|
|
self.addCleanup(server.server_close)
|
|
|
|
with tempfile.TemporaryDirectory() as tmp:
|
|
repo = Path(tmp) / "repo"
|
|
repo.mkdir()
|
|
subprocess.run(["git", "init"], cwd=repo, check=True,
|
|
capture_output=True, text=True)
|
|
subprocess.run(["git", "config", "user.name", "test"],
|
|
cwd=repo, check=True)
|
|
subprocess.run(["git", "config", "user.email", "test@example.invalid"],
|
|
cwd=repo, check=True)
|
|
(repo / "README.md").write_text("test\n")
|
|
subprocess.run(["git", "add", "README.md"], cwd=repo, check=True)
|
|
subprocess.run(["git", "commit", "-m", "test"],
|
|
cwd=repo, check=True, capture_output=True, text=True)
|
|
remote = f"http://127.0.0.1:{server.server_port}/owner/repo.git"
|
|
subprocess.run(["git", "remote", "add", "origin", remote],
|
|
cwd=repo, check=True)
|
|
|
|
started = time.monotonic()
|
|
result = subprocess.run(
|
|
["git", "push", "origin", "HEAD:refs/heads/main"],
|
|
cwd=repo,
|
|
capture_output=True,
|
|
text=True,
|
|
timeout=5,
|
|
check=False,
|
|
)
|
|
elapsed = time.monotonic() - started
|
|
|
|
self.assertNotEqual(0, result.returncode)
|
|
self.assertLess(elapsed, 5)
|
|
self.assertTrue(
|
|
any("service=git-receive-pack" in p for p in seen_paths),
|
|
f"git did not request receive-pack capabilities; saw {seen_paths!r}",
|
|
)
|
|
self.assertIn("403", result.stderr)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|