feat(mcp): support native commit payload preparation without shell (closes #263)

2026-07-06 14:42:59 -04:00
parent 67634c399e
commit 2a544b78d1
2 changed files with 358 additions and 4 deletions
@@ -0,0 +1,251 @@
+import json
+import os
+import tempfile
+import unittest
+from unittest.mock import MagicMock, patch
+
+import gitea_config
+import mcp_server
+import task_capability_map
+
+CONFIG = {
+    "version": 2,
+    "contexts": {
+        "ctx": {
+            "enabled": True,
+            "gitea": {"enabled": True, "base_url": "https://gitea.example.com"},
+        }
+    },
+    "profiles": {
+        "full-author": {
+            "enabled": True,
+            "context": "ctx",
+            "role": "author",
+            "username": "author-user",
+            "auth": {"type": "env", "name": "GITEA_TOKEN_AUTHOR"},
+            "allowed_operations": [
+                "gitea.read",
+                "gitea.repo.commit",
+                "gitea.pr.create",
+                "gitea.branch.push",
+            ],
+            "forbidden_operations": [
+                "gitea.pr.approve",
+                "gitea.pr.merge",
+                "gitea.pr.review",
+            ],
+            "execution_profile": "full-author",
+        },
+    },
+}
+
+
+class TestCommitPayloads(unittest.TestCase):
+    def setUp(self):
+        self._remotes = patch.dict(mcp_server.REMOTES, {
+            "prgs": {"host": "gitea.example.com", "org": "Example-Org",
+                     "repo": "Example-Repo"},
+        })
+        self._remotes.start()
+        mcp_server._IDENTITY_CACHE.clear()
+
+        # Setup temp directories and lock files
+        self._dir = tempfile.TemporaryDirectory()
+        self.config_path = os.path.join(self._dir.name, "profiles.json")
+        with open(self.config_path, "w", encoding="utf-8") as fh:
+            fh.write(json.dumps(CONFIG))
+
+        self.locked_worktree_dir = tempfile.TemporaryDirectory()
+        self.locked_worktree_path = os.path.realpath(self.locked_worktree_dir.name)
+
+        self.lock_file_path = "/tmp/gitea_issue_lock.json"
+        self.lock_data = {
+            "issue_number": 263,
+            "branch_name": "feat/issue-263-native-commit-payloads",
+            "remote": "prgs",
+            "org": "Example-Org",
+            "repo": "Example-Repo",
+            "worktree_path": self.locked_worktree_path,
+        }
+        with open(self.lock_file_path, "w", encoding="utf-8") as fh:
+            fh.write(json.dumps(self.lock_data))
+
+        # Reset preflight status to bypass/pass verification in tests
+        self.orig_whoami_called = mcp_server._preflight_whoami_called
+        self.orig_capability_called = mcp_server._preflight_capability_called
+        mcp_server._preflight_whoami_called = True
+        mcp_server._preflight_capability_called = True
+
+    def tearDown(self):
+        self._remotes.stop()
+        mcp_server._IDENTITY_CACHE.clear()
+
+        mcp_server._preflight_whoami_called = self.orig_whoami_called
+        mcp_server._preflight_capability_called = self.orig_capability_called
+
+        self._dir.cleanup()
+        self.locked_worktree_dir.cleanup()
+        if os.path.exists(self.lock_file_path):
+            os.remove(self.lock_file_path)
+
+    def _env(self, profile: str) -> dict:
+        return {
+            "GITEA_MCP_CONFIG": self.config_path,
+            "GITEA_MCP_PROFILE": profile,
+            "GITEA_TOKEN_AUTHOR": "author-pass",
+            "GITEA_TEST_PORCELAIN": "",
+        }
+
+    @patch("mcp_server.api_request")
+    @patch("mcp_server.get_auth_header", return_value="token author-pass")
+    def test_commit_files_content_plain(self, _auth, mock_api):
+        mock_api.return_value = {
+            "commit": {"sha": "sha-123"},
+            "branch": {"name": "feat/issue-263-native-commit-payloads"}
+        }
+        with patch.dict(os.environ, self._env("full-author"), clear=True):
+            res = mcp_server.gitea_commit_files(
+                files=[
+                    {
+                        "operation": "create",
+                        "path": "hello.txt",
+                        "content_plain": "Hello World!",
+                    }
+                ],
+                message="Add hello.txt",
+                remote="prgs",
+            )
+        print("DEBUG RES IS:", res)
+        self.assertTrue(res["success"])
+        self.assertEqual(res["commit"], "sha-123")
+        self.assertEqual(res["content_source_proof"][0]["source"], "inline_plain")
+
+        # Verify posted base64 content
+        post_args = mock_api.call_args[0]
+        payload = post_args[3]
+        self.assertEqual(payload["files"][0]["content"], "SGVsbG8gV29ybGQh")
+
+    @patch("mcp_server.api_request")
+    @patch("mcp_server.get_auth_header", return_value="token author-pass")
+    def test_commit_files_workspace_path(self, _auth, mock_api):
+        mock_api.return_value = {
+            "commit": {"sha": "sha-456"},
+            "branch": {"name": "feat/issue-263-native-commit-payloads"}
+        }
+
+        # Create a workspace file
+        file_relative = "src/code.py"
+        file_abs = os.path.join(self.locked_worktree_path, file_relative)
+        os.makedirs(os.path.dirname(file_abs), exist_ok=True)
+        with open(file_abs, "wb") as fh:
+            fh.write(b"print('hello')")
+
+        with patch.dict(os.environ, self._env("full-author"), clear=True):
+            res = mcp_server.gitea_commit_files(
+                files=[
+                    {
+                        "operation": "create",
+                        "path": "src/code.py",
+                        "workspace_path": file_relative,
+                    }
+                ],
+                message="Add code.py",
+                remote="prgs",
+            )
+        self.assertTrue(res["success"])
+        self.assertEqual(res["content_source_proof"][0]["source"], "workspace_path")
+
+        post_args = mock_api.call_args[0]
+        payload = post_args[3]
+        # "print('hello')" in base64 is cHJpbnQoJ2hlbGxvJyk=
+        self.assertEqual(payload["files"][0]["content"], "cHJpbnQoJ2hlbGxvJyk=")
+
+    @patch("mcp_server.api_request")
+    @patch("mcp_server.get_auth_header", return_value="token author-pass")
+    def test_commit_files_local_path(self, _auth, mock_api):
+        mock_api.return_value = {
+            "commit": {"sha": "sha-789"},
+            "branch": {"name": "feat/issue-263-native-commit-payloads"}
+        }
+
+        file_abs = os.path.join(self.locked_worktree_path, "local.bin")
+        with open(file_abs, "wb") as fh:
+            fh.write(b"\x00\x01\x02\x03\xff")
+
+        with patch.dict(os.environ, self._env("full-author"), clear=True):
+            res = mcp_server.gitea_commit_files(
+                files=[
+                    {
+                        "operation": "create",
+                        "path": "local.bin",
+                        "local_path": file_abs,
+                    }
+                ],
+                message="Add local.bin",
+                remote="prgs",
+            )
+        self.assertTrue(res["success"])
+        self.assertEqual(res["content_source_proof"][0]["source"], "local_path")
+
+        post_args = mock_api.call_args[0]
+        payload = post_args[3]
+        # b"\x00\x01\x02\x03\xff" in base64 is AAECA/8=
+        self.assertEqual(payload["files"][0]["content"], "AAECA/8=")
+
+    @patch("mcp_server.api_request")
+    @patch("mcp_server.get_auth_header", return_value="token author-pass")
+    def test_commit_files_traversal_blocked(self, _auth, mock_api):
+        # Remove active lock file to ensure it fails on traversal/invalid locks
+        os.remove(self.lock_file_path)
+
+        with patch.dict(os.environ, self._env("full-author"), clear=True):
+            with self.assertRaises(RuntimeError) as ctx:
+                mcp_server.gitea_commit_files(
+                    files=[
+                        {
+                            "operation": "create",
+                            "path": "hack.txt",
+                            "workspace_path": "any.txt",
+                        }
+                    ],
+                    message="Add hack",
+                    remote="prgs",
+                )
+            self.assertIn("Issue lock is missing", str(ctx.exception))
+
+    @patch("mcp_server.api_request")
+    @patch("mcp_server.get_auth_header", return_value="token author-pass")
+    def test_commit_files_outside_scope_blocked(self, _auth, mock_api):
+        with patch.dict(os.environ, self._env("full-author"), clear=True):
+            with self.assertRaises(ValueError) as ctx:
+                mcp_server.gitea_commit_files(
+                    files=[
+                        {
+                            "operation": "create",
+                            "path": "hack.txt",
+                            "workspace_path": "../outside.txt",
+                        }
+                    ],
+                    message="Add hack",
+                    remote="prgs",
+                )
+            self.assertIn("falls outside of locked worktree", str(ctx.exception))
+
+    @patch("mcp_server.api_request")
+    @patch("mcp_server.get_auth_header", return_value="token author-pass")
+    def test_commit_files_multiple_sources_blocked(self, _auth, mock_api):
+        with patch.dict(os.environ, self._env("full-author"), clear=True):
+            with self.assertRaises(ValueError) as ctx:
+                mcp_server.gitea_commit_files(
+                    files=[
+                        {
+                            "operation": "create",
+                            "path": "hello.txt",
+                            "content_plain": "Hello!",
+                            "content": "SGVsbG8=",
+                        }
+                    ],
+                    message="Add hello",
+                    remote="prgs",
+                )
+            self.assertIn("Multiple content sources specified", str(ctx.exception))