feat: harden gateway with policy engine, secure tools, and governance docs

This commit is contained in:
2026-02-14 16:05:56 +01:00
parent e17d34e6d7
commit 5969892af3
55 changed files with 4711 additions and 1587 deletions
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"""Extended read-only MCP tools."""
from __future__ import annotations
from typing import Any
from aegis_gitea_mcp.gitea_client import GiteaClient, GiteaError
from aegis_gitea_mcp.response_limits import limit_items, limit_text
from aegis_gitea_mcp.tools.arguments import (
CommitDiffArgs,
CompareRefsArgs,
IssueArgs,
ListCommitsArgs,
ListIssuesArgs,
ListLabelsArgs,
ListPullRequestsArgs,
ListReleasesArgs,
ListTagsArgs,
PullRequestArgs,
SearchCodeArgs,
)
async def search_code_tool(gitea: GiteaClient, arguments: dict[str, Any]) -> dict[str, Any]:
"""Search repository code and return bounded result snippets."""
parsed = SearchCodeArgs.model_validate(arguments)
try:
raw = await gitea.search_code(
parsed.owner,
parsed.repo,
parsed.query,
ref=parsed.ref,
page=parsed.page,
limit=parsed.limit,
)
hits_raw = raw.get("data", raw.get("hits", [])) if isinstance(raw, dict) else []
if not isinstance(hits_raw, list):
hits_raw = []
normalized_hits = []
for item in hits_raw:
if not isinstance(item, dict):
continue
snippet = str(item.get("content", item.get("snippet", "")))
normalized_hits.append(
{
"path": item.get("filename", item.get("path", "")),
"sha": item.get("sha", ""),
"ref": parsed.ref,
"snippet": limit_text(snippet),
"score": item.get("score", 0),
}
)
bounded, omitted = limit_items(normalized_hits, configured_limit=parsed.limit)
return {
"owner": parsed.owner,
"repo": parsed.repo,
"query": parsed.query,
"ref": parsed.ref,
"results": bounded,
"count": len(bounded),
"omitted": omitted,
}
except GiteaError as exc:
raise RuntimeError(f"Failed to search code: {exc}") from exc
async def list_commits_tool(gitea: GiteaClient, arguments: dict[str, Any]) -> dict[str, Any]:
"""List commits for a repository reference."""
parsed = ListCommitsArgs.model_validate(arguments)
try:
commits = await gitea.list_commits(
parsed.owner,
parsed.repo,
ref=parsed.ref,
page=parsed.page,
limit=parsed.limit,
)
normalized = [
{
"sha": commit.get("sha", ""),
"message": limit_text(str(commit.get("commit", {}).get("message", ""))),
"author": commit.get("author", {}).get("login", ""),
"created": commit.get("commit", {}).get("author", {}).get("date", ""),
"url": commit.get("html_url", ""),
}
for commit in commits
if isinstance(commit, dict)
]
bounded, omitted = limit_items(normalized, configured_limit=parsed.limit)
return {
"owner": parsed.owner,
"repo": parsed.repo,
"ref": parsed.ref,
"commits": bounded,
"count": len(bounded),
"omitted": omitted,
}
except GiteaError as exc:
raise RuntimeError(f"Failed to list commits: {exc}") from exc
async def get_commit_diff_tool(gitea: GiteaClient, arguments: dict[str, Any]) -> dict[str, Any]:
"""Return commit-level file diff metadata."""
parsed = CommitDiffArgs.model_validate(arguments)
try:
commit = await gitea.get_commit_diff(parsed.owner, parsed.repo, parsed.sha)
files = commit.get("files", []) if isinstance(commit, dict) else []
normalized_files = []
if isinstance(files, list):
for item in files:
if not isinstance(item, dict):
continue
normalized_files.append(
{
"filename": item.get("filename", ""),
"status": item.get("status", ""),
"additions": item.get("additions", 0),
"deletions": item.get("deletions", 0),
"changes": item.get("changes", 0),
"patch": limit_text(str(item.get("patch", ""))),
}
)
bounded, omitted = limit_items(normalized_files)
return {
"owner": parsed.owner,
"repo": parsed.repo,
"sha": parsed.sha,
"message": limit_text(
str(commit.get("message", commit.get("commit", {}).get("message", "")))
),
"files": bounded,
"count": len(bounded),
"omitted": omitted,
}
except GiteaError as exc:
raise RuntimeError(f"Failed to get commit diff: {exc}") from exc
async def compare_refs_tool(gitea: GiteaClient, arguments: dict[str, Any]) -> dict[str, Any]:
"""Compare two refs and return bounded commit/file changes."""
parsed = CompareRefsArgs.model_validate(arguments)
try:
comparison = await gitea.compare_refs(parsed.owner, parsed.repo, parsed.base, parsed.head)
commits_raw = comparison.get("commits", []) if isinstance(comparison, dict) else []
files_raw = comparison.get("files", []) if isinstance(comparison, dict) else []
commits = [
{
"sha": commit.get("sha", ""),
"message": limit_text(str(commit.get("commit", {}).get("message", ""))),
}
for commit in commits_raw
if isinstance(commit, dict)
]
commit_items, commit_omitted = limit_items(commits)
files = [
{
"filename": item.get("filename", ""),
"status": item.get("status", ""),
"additions": item.get("additions", 0),
"deletions": item.get("deletions", 0),
}
for item in files_raw
if isinstance(item, dict)
]
file_items, file_omitted = limit_items(files)
return {
"owner": parsed.owner,
"repo": parsed.repo,
"base": parsed.base,
"head": parsed.head,
"commits": commit_items,
"files": file_items,
"commit_count": len(commit_items),
"file_count": len(file_items),
"omitted_commits": commit_omitted,
"omitted_files": file_omitted,
}
except GiteaError as exc:
raise RuntimeError(f"Failed to compare refs: {exc}") from exc
async def list_issues_tool(gitea: GiteaClient, arguments: dict[str, Any]) -> dict[str, Any]:
"""List issues for repository."""
parsed = ListIssuesArgs.model_validate(arguments)
try:
issues = await gitea.list_issues(
parsed.owner,
parsed.repo,
state=parsed.state,
page=parsed.page,
limit=parsed.limit,
labels=parsed.labels,
)
normalized = [
{
"number": issue.get("number", 0),
"title": limit_text(str(issue.get("title", ""))),
"state": issue.get("state", ""),
"author": issue.get("user", {}).get("login", ""),
"labels": [label.get("name", "") for label in issue.get("labels", [])],
"created_at": issue.get("created_at", ""),
"updated_at": issue.get("updated_at", ""),
"url": issue.get("html_url", ""),
}
for issue in issues
if isinstance(issue, dict)
]
bounded, omitted = limit_items(normalized, configured_limit=parsed.limit)
return {
"owner": parsed.owner,
"repo": parsed.repo,
"state": parsed.state,
"issues": bounded,
"count": len(bounded),
"omitted": omitted,
}
except GiteaError as exc:
raise RuntimeError(f"Failed to list issues: {exc}") from exc
async def get_issue_tool(gitea: GiteaClient, arguments: dict[str, Any]) -> dict[str, Any]:
"""Get issue details."""
parsed = IssueArgs.model_validate(arguments)
try:
issue = await gitea.get_issue(parsed.owner, parsed.repo, parsed.issue_number)
return {
"number": issue.get("number", 0),
"title": limit_text(str(issue.get("title", ""))),
"body": limit_text(str(issue.get("body", ""))),
"state": issue.get("state", ""),
"author": issue.get("user", {}).get("login", ""),
"labels": [label.get("name", "") for label in issue.get("labels", [])],
"assignees": [assignee.get("login", "") for assignee in issue.get("assignees", [])],
"created_at": issue.get("created_at", ""),
"updated_at": issue.get("updated_at", ""),
"url": issue.get("html_url", ""),
}
except GiteaError as exc:
raise RuntimeError(f"Failed to get issue: {exc}") from exc
async def list_pull_requests_tool(gitea: GiteaClient, arguments: dict[str, Any]) -> dict[str, Any]:
"""List pull requests."""
parsed = ListPullRequestsArgs.model_validate(arguments)
try:
pull_requests = await gitea.list_pull_requests(
parsed.owner,
parsed.repo,
state=parsed.state,
page=parsed.page,
limit=parsed.limit,
)
normalized = [
{
"number": pull.get("number", 0),
"title": limit_text(str(pull.get("title", ""))),
"state": pull.get("state", ""),
"author": pull.get("user", {}).get("login", ""),
"draft": pull.get("draft", False),
"mergeable": pull.get("mergeable", False),
"created_at": pull.get("created_at", ""),
"updated_at": pull.get("updated_at", ""),
"url": pull.get("html_url", ""),
}
for pull in pull_requests
if isinstance(pull, dict)
]
bounded, omitted = limit_items(normalized, configured_limit=parsed.limit)
return {
"owner": parsed.owner,
"repo": parsed.repo,
"state": parsed.state,
"pull_requests": bounded,
"count": len(bounded),
"omitted": omitted,
}
except GiteaError as exc:
raise RuntimeError(f"Failed to list pull requests: {exc}") from exc
async def get_pull_request_tool(gitea: GiteaClient, arguments: dict[str, Any]) -> dict[str, Any]:
"""Get pull request details."""
parsed = PullRequestArgs.model_validate(arguments)
try:
pull = await gitea.get_pull_request(parsed.owner, parsed.repo, parsed.pull_number)
return {
"number": pull.get("number", 0),
"title": limit_text(str(pull.get("title", ""))),
"body": limit_text(str(pull.get("body", ""))),
"state": pull.get("state", ""),
"draft": pull.get("draft", False),
"mergeable": pull.get("mergeable", False),
"author": pull.get("user", {}).get("login", ""),
"base": pull.get("base", {}).get("ref", ""),
"head": pull.get("head", {}).get("ref", ""),
"created_at": pull.get("created_at", ""),
"updated_at": pull.get("updated_at", ""),
"url": pull.get("html_url", ""),
}
except GiteaError as exc:
raise RuntimeError(f"Failed to get pull request: {exc}") from exc
async def list_labels_tool(gitea: GiteaClient, arguments: dict[str, Any]) -> dict[str, Any]:
"""List labels configured on repository."""
parsed = ListLabelsArgs.model_validate(arguments)
try:
labels = await gitea.list_labels(
parsed.owner, parsed.repo, page=parsed.page, limit=parsed.limit
)
normalized = [
{
"id": label.get("id", 0),
"name": label.get("name", ""),
"color": label.get("color", ""),
"description": limit_text(str(label.get("description", ""))),
}
for label in labels
if isinstance(label, dict)
]
bounded, omitted = limit_items(normalized, configured_limit=parsed.limit)
return {
"owner": parsed.owner,
"repo": parsed.repo,
"labels": bounded,
"count": len(bounded),
"omitted": omitted,
}
except GiteaError as exc:
raise RuntimeError(f"Failed to list labels: {exc}") from exc
async def list_tags_tool(gitea: GiteaClient, arguments: dict[str, Any]) -> dict[str, Any]:
"""List repository tags."""
parsed = ListTagsArgs.model_validate(arguments)
try:
tags = await gitea.list_tags(
parsed.owner, parsed.repo, page=parsed.page, limit=parsed.limit
)
normalized = [
{
"name": tag.get("name", ""),
"commit": tag.get("commit", {}).get("sha", ""),
"zipball_url": tag.get("zipball_url", ""),
"tarball_url": tag.get("tarball_url", ""),
}
for tag in tags
if isinstance(tag, dict)
]
bounded, omitted = limit_items(normalized, configured_limit=parsed.limit)
return {
"owner": parsed.owner,
"repo": parsed.repo,
"tags": bounded,
"count": len(bounded),
"omitted": omitted,
}
except GiteaError as exc:
raise RuntimeError(f"Failed to list tags: {exc}") from exc
async def list_releases_tool(gitea: GiteaClient, arguments: dict[str, Any]) -> dict[str, Any]:
"""List repository releases."""
parsed = ListReleasesArgs.model_validate(arguments)
try:
releases = await gitea.list_releases(
parsed.owner,
parsed.repo,
page=parsed.page,
limit=parsed.limit,
)
normalized = [
{
"id": release.get("id", 0),
"tag_name": release.get("tag_name", ""),
"name": limit_text(str(release.get("name", ""))),
"draft": release.get("draft", False),
"prerelease": release.get("prerelease", False),
"body": limit_text(str(release.get("body", ""))),
"created_at": release.get("created_at", ""),
"published_at": release.get("published_at", ""),
"url": release.get("html_url", ""),
}
for release in releases
if isinstance(release, dict)
]
bounded, omitted = limit_items(normalized, configured_limit=parsed.limit)
return {
"owner": parsed.owner,
"repo": parsed.repo,
"releases": bounded,
"count": len(bounded),
"omitted": omitted,
}
except GiteaError as exc:
raise RuntimeError(f"Failed to list releases: {exc}") from exc