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495 lines
17 KiB
495 lines
17 KiB
// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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// Package private includes all internal routes. The package name internal is ideal but Golang is not allowed, so we use private as package name instead.
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package private
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import (
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"bufio"
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"context"
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"fmt"
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"io"
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"net/http"
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"os"
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"strings"
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"code.gitea.io/gitea/models"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/private"
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"code.gitea.io/gitea/modules/repofiles"
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"code.gitea.io/gitea/modules/util"
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pull_service "code.gitea.io/gitea/services/pull"
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"gopkg.in/src-d/go-git.v4/plumbing"
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"gitea.com/macaron/macaron"
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)
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func verifyCommits(oldCommitID, newCommitID string, repo *git.Repository, env []string) error {
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stdoutReader, stdoutWriter, err := os.Pipe()
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if err != nil {
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log.Error("Unable to create os.Pipe for %s", repo.Path)
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return err
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}
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defer func() {
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_ = stdoutReader.Close()
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_ = stdoutWriter.Close()
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}()
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err = git.NewCommand("rev-list", oldCommitID+"..."+newCommitID).
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RunInDirTimeoutEnvFullPipelineFunc(env, -1, repo.Path,
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stdoutWriter, nil, nil,
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func(ctx context.Context, cancel context.CancelFunc) error {
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_ = stdoutWriter.Close()
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err := readAndVerifyCommitsFromShaReader(stdoutReader, repo, env)
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if err != nil {
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log.Error("%v", err)
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cancel()
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}
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_ = stdoutReader.Close()
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return err
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})
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if err != nil && !isErrUnverifiedCommit(err) {
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log.Error("Unable to check commits from %s to %s in %s: %v", oldCommitID, newCommitID, repo.Path, err)
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}
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return err
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}
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func readAndVerifyCommitsFromShaReader(input io.ReadCloser, repo *git.Repository, env []string) error {
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scanner := bufio.NewScanner(input)
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for scanner.Scan() {
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line := scanner.Text()
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err := readAndVerifyCommit(line, repo, env)
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if err != nil {
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log.Error("%v", err)
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return err
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}
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}
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return scanner.Err()
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}
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func readAndVerifyCommit(sha string, repo *git.Repository, env []string) error {
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stdoutReader, stdoutWriter, err := os.Pipe()
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if err != nil {
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log.Error("Unable to create pipe for %s: %v", repo.Path, err)
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return err
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}
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defer func() {
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_ = stdoutReader.Close()
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_ = stdoutWriter.Close()
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}()
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hash := plumbing.NewHash(sha)
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return git.NewCommand("cat-file", "commit", sha).
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RunInDirTimeoutEnvFullPipelineFunc(env, -1, repo.Path,
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stdoutWriter, nil, nil,
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func(ctx context.Context, cancel context.CancelFunc) error {
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_ = stdoutWriter.Close()
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commit, err := git.CommitFromReader(repo, hash, stdoutReader)
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if err != nil {
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return err
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}
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verification := models.ParseCommitWithSignature(commit)
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if !verification.Verified {
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cancel()
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return &errUnverifiedCommit{
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commit.ID.String(),
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}
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}
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return nil
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})
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}
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type errUnverifiedCommit struct {
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sha string
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}
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func (e *errUnverifiedCommit) Error() string {
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return fmt.Sprintf("Unverified commit: %s", e.sha)
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}
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func isErrUnverifiedCommit(err error) bool {
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_, ok := err.(*errUnverifiedCommit)
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return ok
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}
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// HookPreReceive checks whether a individual commit is acceptable
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func HookPreReceive(ctx *macaron.Context, opts private.HookOptions) {
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ownerName := ctx.Params(":owner")
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repoName := ctx.Params(":repo")
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repo, err := models.GetRepositoryByOwnerAndName(ownerName, repoName)
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if err != nil {
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log.Error("Unable to get repository: %s/%s Error: %v", ownerName, repoName, err)
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ctx.JSON(http.StatusInternalServerError, map[string]interface{}{
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"err": err.Error(),
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})
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return
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}
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repo.OwnerName = ownerName
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gitRepo, err := git.OpenRepository(repo.RepoPath())
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if err != nil {
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log.Error("Unable to get git repository for: %s/%s Error: %v", ownerName, repoName, err)
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ctx.JSON(http.StatusInternalServerError, map[string]interface{}{
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"err": err.Error(),
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})
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return
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}
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defer gitRepo.Close()
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// Generate git environment for checking commits
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env := os.Environ()
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if opts.GitAlternativeObjectDirectories != "" {
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env = append(env,
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private.GitAlternativeObjectDirectories+"="+opts.GitAlternativeObjectDirectories)
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}
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if opts.GitObjectDirectory != "" {
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env = append(env,
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private.GitObjectDirectory+"="+opts.GitObjectDirectory)
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}
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if opts.GitQuarantinePath != "" {
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env = append(env,
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private.GitQuarantinePath+"="+opts.GitQuarantinePath)
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}
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for i := range opts.OldCommitIDs {
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oldCommitID := opts.OldCommitIDs[i]
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newCommitID := opts.NewCommitIDs[i]
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refFullName := opts.RefFullNames[i]
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branchName := strings.TrimPrefix(refFullName, git.BranchPrefix)
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protectBranch, err := models.GetProtectedBranchBy(repo.ID, branchName)
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if err != nil {
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log.Error("Unable to get protected branch: %s in %-v Error: %v", branchName, repo, err)
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ctx.JSON(500, map[string]interface{}{
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"err": err.Error(),
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})
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return
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}
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if protectBranch != nil && protectBranch.IsProtected() {
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// detect and prevent deletion
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if newCommitID == git.EmptySHA {
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log.Warn("Forbidden: Branch: %s in %-v is protected from deletion", branchName, repo)
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ctx.JSON(http.StatusForbidden, map[string]interface{}{
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"err": fmt.Sprintf("branch %s is protected from deletion", branchName),
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})
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return
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}
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// detect force push
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if git.EmptySHA != oldCommitID {
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output, err := git.NewCommand("rev-list", "--max-count=1", oldCommitID, "^"+newCommitID).RunInDirWithEnv(repo.RepoPath(), env)
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if err != nil {
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log.Error("Unable to detect force push between: %s and %s in %-v Error: %v", oldCommitID, newCommitID, repo, err)
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ctx.JSON(http.StatusInternalServerError, map[string]interface{}{
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"err": fmt.Sprintf("Fail to detect force push: %v", err),
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})
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return
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} else if len(output) > 0 {
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log.Warn("Forbidden: Branch: %s in %-v is protected from force push", branchName, repo)
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ctx.JSON(http.StatusForbidden, map[string]interface{}{
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"err": fmt.Sprintf("branch %s is protected from force push", branchName),
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})
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return
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}
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}
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// Require signed commits
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if protectBranch.RequireSignedCommits {
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err := verifyCommits(oldCommitID, newCommitID, gitRepo, env)
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if err != nil {
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if !isErrUnverifiedCommit(err) {
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log.Error("Unable to check commits from %s to %s in %-v: %v", oldCommitID, newCommitID, repo, err)
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ctx.JSON(http.StatusInternalServerError, map[string]interface{}{
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"err": fmt.Sprintf("Unable to check commits from %s to %s: %v", oldCommitID, newCommitID, err),
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})
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return
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}
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unverifiedCommit := err.(*errUnverifiedCommit).sha
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log.Warn("Forbidden: Branch: %s in %-v is protected from unverified commit %s", branchName, repo, unverifiedCommit)
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ctx.JSON(http.StatusForbidden, map[string]interface{}{
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"err": fmt.Sprintf("branch %s is protected from unverified commit %s", branchName, unverifiedCommit),
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})
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return
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}
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}
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canPush := false
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if opts.IsDeployKey {
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canPush = protectBranch.CanPush && (!protectBranch.EnableWhitelist || protectBranch.WhitelistDeployKeys)
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} else {
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canPush = protectBranch.CanUserPush(opts.UserID)
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}
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if !canPush && opts.ProtectedBranchID > 0 {
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// Merge (from UI or API)
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pr, err := models.GetPullRequestByID(opts.ProtectedBranchID)
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if err != nil {
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log.Error("Unable to get PullRequest %d Error: %v", opts.ProtectedBranchID, err)
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ctx.JSON(http.StatusInternalServerError, map[string]interface{}{
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"err": fmt.Sprintf("Unable to get PullRequest %d Error: %v", opts.ProtectedBranchID, err),
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})
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return
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}
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user, err := models.GetUserByID(opts.UserID)
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if err != nil {
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log.Error("Unable to get User id %d Error: %v", opts.UserID, err)
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ctx.JSON(http.StatusInternalServerError, map[string]interface{}{
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"err": fmt.Sprintf("Unable to get User id %d Error: %v", opts.UserID, err),
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})
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return
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}
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perm, err := models.GetUserRepoPermission(repo, user)
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if err != nil {
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log.Error("Unable to get Repo permission of repo %s/%s of User %s", repo.OwnerName, repo.Name, user.Name, err)
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ctx.JSON(http.StatusInternalServerError, map[string]interface{}{
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"err": fmt.Sprintf("Unable to get Repo permission of repo %s/%s of User %s: %v", repo.OwnerName, repo.Name, user.Name, err),
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})
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return
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}
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allowedMerge, err := pull_service.IsUserAllowedToMerge(pr, perm, user)
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if err != nil {
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log.Error("Error calculating if allowed to merge: %v", err)
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ctx.JSON(http.StatusInternalServerError, map[string]interface{}{
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"err": fmt.Sprintf("Error calculating if allowed to merge: %v", err),
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})
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return
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}
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if !allowedMerge {
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log.Warn("Forbidden: User %d is not allowed to push to protected branch: %s in %-v and is not allowed to merge pr #%d", opts.UserID, branchName, repo, pr.Index)
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ctx.JSON(http.StatusForbidden, map[string]interface{}{
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"err": fmt.Sprintf("Not allowed to push to protected branch %s", branchName),
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})
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return
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}
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// Check all status checks and reviews is ok, unless repo admin which can bypass this.
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if !perm.IsAdmin() {
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if err := pull_service.CheckPRReadyToMerge(pr); err != nil {
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if models.IsErrNotAllowedToMerge(err) {
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log.Warn("Forbidden: User %d is not allowed push to protected branch %s in %-v and pr #%d is not ready to be merged: %s", opts.UserID, branchName, repo, pr.Index, err.Error())
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ctx.JSON(http.StatusForbidden, map[string]interface{}{
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"err": fmt.Sprintf("Not allowed to push to protected branch %s and pr #%d is not ready to be merged: %s", branchName, opts.ProtectedBranchID, err.Error()),
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})
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return
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}
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log.Error("Unable to check if mergable: protected branch %s in %-v and pr #%d. Error: %v", opts.UserID, branchName, repo, pr.Index, err)
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ctx.JSON(http.StatusInternalServerError, map[string]interface{}{
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"err": fmt.Sprintf("Unable to get status of pull request %d. Error: %v", opts.ProtectedBranchID, err),
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})
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}
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}
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} else if !canPush {
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log.Warn("Forbidden: User %d is not allowed to push to protected branch: %s in %-v", opts.UserID, branchName, repo)
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ctx.JSON(http.StatusForbidden, map[string]interface{}{
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"err": fmt.Sprintf("Not allowed to push to protected branch %s", branchName),
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})
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return
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}
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}
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}
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ctx.PlainText(http.StatusOK, []byte("ok"))
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}
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// HookPostReceive updates services and users
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func HookPostReceive(ctx *macaron.Context, opts private.HookOptions) {
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ownerName := ctx.Params(":owner")
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repoName := ctx.Params(":repo")
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var repo *models.Repository
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updates := make([]*repofiles.PushUpdateOptions, 0, len(opts.OldCommitIDs))
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wasEmpty := false
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for i := range opts.OldCommitIDs {
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refFullName := opts.RefFullNames[i]
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// Only trigger activity updates for changes to branches or
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// tags. Updates to other refs (eg, refs/notes, refs/changes,
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// or other less-standard refs spaces are ignored since there
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// may be a very large number of them).
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if strings.HasPrefix(refFullName, git.BranchPrefix) || strings.HasPrefix(refFullName, git.TagPrefix) {
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if repo == nil {
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var err error
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repo, err = models.GetRepositoryByOwnerAndName(ownerName, repoName)
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if err != nil {
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log.Error("Failed to get repository: %s/%s Error: %v", ownerName, repoName, err)
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ctx.JSON(http.StatusInternalServerError, private.HookPostReceiveResult{
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Err: fmt.Sprintf("Failed to get repository: %s/%s Error: %v", ownerName, repoName, err),
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})
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return
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}
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if repo.OwnerName == "" {
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repo.OwnerName = ownerName
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}
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wasEmpty = repo.IsEmpty
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}
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option := repofiles.PushUpdateOptions{
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RefFullName: refFullName,
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OldCommitID: opts.OldCommitIDs[i],
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NewCommitID: opts.NewCommitIDs[i],
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PusherID: opts.UserID,
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PusherName: opts.UserName,
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RepoUserName: ownerName,
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RepoName: repoName,
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}
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updates = append(updates, &option)
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if repo.IsEmpty && option.IsBranch() && option.BranchName() == "master" {
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// put the master branch first
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copy(updates[1:], updates)
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updates[0] = &option
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}
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}
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}
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if repo != nil && len(updates) > 0 {
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if err := repofiles.PushUpdates(repo, updates); err != nil {
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log.Error("Failed to Update: %s/%s Total Updates: %d", ownerName, repoName, len(updates))
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for i, update := range updates {
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log.Error("Failed to Update: %s/%s Update: %d/%d: Branch: %s", ownerName, repoName, i, len(updates), update.BranchName())
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}
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log.Error("Failed to Update: %s/%s Error: %v", ownerName, repoName, err)
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ctx.JSON(http.StatusInternalServerError, private.HookPostReceiveResult{
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Err: fmt.Sprintf("Failed to Update: %s/%s Error: %v", ownerName, repoName, err),
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})
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return
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}
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}
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results := make([]private.HookPostReceiveBranchResult, 0, len(opts.OldCommitIDs))
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// We have to reload the repo in case its state is changed above
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repo = nil
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var baseRepo *models.Repository
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for i := range opts.OldCommitIDs {
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refFullName := opts.RefFullNames[i]
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newCommitID := opts.NewCommitIDs[i]
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branch := git.RefEndName(opts.RefFullNames[i])
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if newCommitID != git.EmptySHA && strings.HasPrefix(refFullName, git.BranchPrefix) {
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if repo == nil {
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var err error
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repo, err = models.GetRepositoryByOwnerAndName(ownerName, repoName)
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if err != nil {
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log.Error("Failed to get repository: %s/%s Error: %v", ownerName, repoName, err)
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ctx.JSON(http.StatusInternalServerError, private.HookPostReceiveResult{
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Err: fmt.Sprintf("Failed to get repository: %s/%s Error: %v", ownerName, repoName, err),
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RepoWasEmpty: wasEmpty,
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})
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return
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}
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if repo.OwnerName == "" {
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repo.OwnerName = ownerName
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}
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if !repo.AllowsPulls() {
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// We can stop there's no need to go any further
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ctx.JSON(http.StatusOK, private.HookPostReceiveResult{
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RepoWasEmpty: wasEmpty,
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})
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return
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}
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baseRepo = repo
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if repo.IsFork {
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if err := repo.GetBaseRepo(); err != nil {
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log.Error("Failed to get Base Repository of Forked repository: %-v Error: %v", repo, err)
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ctx.JSON(http.StatusInternalServerError, private.HookPostReceiveResult{
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Err: fmt.Sprintf("Failed to get Base Repository of Forked repository: %-v Error: %v", repo, err),
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RepoWasEmpty: wasEmpty,
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})
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return
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}
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baseRepo = repo.BaseRepo
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}
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}
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if !repo.IsFork && branch == baseRepo.DefaultBranch {
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results = append(results, private.HookPostReceiveBranchResult{})
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continue
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}
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pr, err := models.GetUnmergedPullRequest(repo.ID, baseRepo.ID, branch, baseRepo.DefaultBranch)
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if err != nil && !models.IsErrPullRequestNotExist(err) {
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log.Error("Failed to get active PR in: %-v Branch: %s to: %-v Branch: %s Error: %v", repo, branch, baseRepo, baseRepo.DefaultBranch, err)
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ctx.JSON(http.StatusInternalServerError, private.HookPostReceiveResult{
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Err: fmt.Sprintf(
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"Failed to get active PR in: %-v Branch: %s to: %-v Branch: %s Error: %v", repo, branch, baseRepo, baseRepo.DefaultBranch, err),
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RepoWasEmpty: wasEmpty,
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})
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return
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}
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if pr == nil {
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if repo.IsFork {
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branch = fmt.Sprintf("%s:%s", repo.OwnerName, branch)
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}
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results = append(results, private.HookPostReceiveBranchResult{
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Message: true,
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Create: true,
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Branch: branch,
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URL: fmt.Sprintf("%s/compare/%s...%s", baseRepo.HTMLURL(), util.PathEscapeSegments(baseRepo.DefaultBranch), util.PathEscapeSegments(branch)),
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})
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} else {
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results = append(results, private.HookPostReceiveBranchResult{
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Message: true,
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Create: false,
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Branch: branch,
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URL: fmt.Sprintf("%s/pulls/%d", baseRepo.HTMLURL(), pr.Index),
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})
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}
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}
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}
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ctx.JSON(http.StatusOK, private.HookPostReceiveResult{
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Results: results,
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RepoWasEmpty: wasEmpty,
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})
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}
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// SetDefaultBranch updates the default branch
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func SetDefaultBranch(ctx *macaron.Context) {
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ownerName := ctx.Params(":owner")
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repoName := ctx.Params(":repo")
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branch := ctx.Params(":branch")
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repo, err := models.GetRepositoryByOwnerAndName(ownerName, repoName)
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if err != nil {
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log.Error("Failed to get repository: %s/%s Error: %v", ownerName, repoName, err)
|
|
ctx.JSON(http.StatusInternalServerError, map[string]interface{}{
|
|
"Err": fmt.Sprintf("Failed to get repository: %s/%s Error: %v", ownerName, repoName, err),
|
|
})
|
|
return
|
|
}
|
|
if repo.OwnerName == "" {
|
|
repo.OwnerName = ownerName
|
|
}
|
|
|
|
repo.DefaultBranch = branch
|
|
gitRepo, err := git.OpenRepository(repo.RepoPath())
|
|
if err != nil {
|
|
ctx.JSON(http.StatusInternalServerError, map[string]interface{}{
|
|
"Err": fmt.Sprintf("Failed to get git repository: %s/%s Error: %v", ownerName, repoName, err),
|
|
})
|
|
return
|
|
}
|
|
if err := gitRepo.SetDefaultBranch(repo.DefaultBranch); err != nil {
|
|
if !git.IsErrUnsupportedVersion(err) {
|
|
gitRepo.Close()
|
|
ctx.JSON(http.StatusInternalServerError, map[string]interface{}{
|
|
"Err": fmt.Sprintf("Unable to set default branch onrepository: %s/%s Error: %v", ownerName, repoName, err),
|
|
})
|
|
return
|
|
}
|
|
}
|
|
gitRepo.Close()
|
|
|
|
if err := repo.UpdateDefaultBranch(); err != nil {
|
|
ctx.JSON(http.StatusInternalServerError, map[string]interface{}{
|
|
"Err": fmt.Sprintf("Unable to set default branch onrepository: %s/%s Error: %v", ownerName, repoName, err),
|
|
})
|
|
return
|
|
}
|
|
ctx.PlainText(200, []byte("success"))
|
|
}
|
|
|