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forgejo/routers/private/hook_post_receive.go
Earl Warren 998a431747
Do not update PRs based on events that happened before they existed
* Split TestPullRequest out of AddTestPullRequestTask
* A Created field is added to the Issue table
* The Created field is set to the time (with nano resolution) on creation
* Record the nano time repo_module.PushUpdateOptions is created by the hook
* The decision to update a pull request created before a commit was
  pushed is based on the time (with nano resolution) the git hook
  was run and the Created field

It ensures the following happens:

* commit C is pushed
* the git hook queues AddTestPullRequestTask for processing and returns with success
* TestPullRequest is not called yet
* a pull request P with commit C as the head is created
* TestPullRequest runs and ignores P because it was created after the commit was received

When the "created" column is NULL, no verification is done, pull
requests that were created before the column was created in the
database cannot be newer than the latest call to a git hook.

Fixes: https://codeberg.org/forgejo/forgejo/issues/2009
2024-04-11 11:16:23 +02:00

306 lines
11 KiB
Go

// Copyright 2021 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package private
import (
"fmt"
"net/http"
"strconv"
"time"
git_model "code.gitea.io/gitea/models/git"
issues_model "code.gitea.io/gitea/models/issues"
repo_model "code.gitea.io/gitea/models/repo"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/gitrepo"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/private"
repo_module "code.gitea.io/gitea/modules/repository"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/util"
"code.gitea.io/gitea/modules/web"
gitea_context "code.gitea.io/gitea/services/context"
repo_service "code.gitea.io/gitea/services/repository"
)
// HookPostReceive updates services and users
func HookPostReceive(ctx *gitea_context.PrivateContext) {
opts := web.GetForm(ctx).(*private.HookOptions)
// We don't rely on RepoAssignment here because:
// a) we don't need the git repo in this function
// OUT OF DATE: we do need the git repo to sync the branch to the db now.
// b) our update function will likely change the repository in the db so we will need to refresh it
// c) we don't always need the repo
ownerName := ctx.Params(":owner")
repoName := ctx.Params(":repo")
// defer getting the repository at this point - as we should only retrieve it if we're going to call update
var (
repo *repo_model.Repository
gitRepo *git.Repository
)
defer gitRepo.Close() // it's safe to call Close on a nil pointer
updates := make([]*repo_module.PushUpdateOptions, 0, len(opts.OldCommitIDs))
wasEmpty := false
for i := range opts.OldCommitIDs {
refFullName := opts.RefFullNames[i]
// Only trigger activity updates for changes to branches or
// tags. Updates to other refs (eg, refs/notes, refs/changes,
// or other less-standard refs spaces are ignored since there
// may be a very large number of them).
if refFullName.IsBranch() || refFullName.IsTag() {
if repo == nil {
repo = loadRepository(ctx, ownerName, repoName)
if ctx.Written() {
// Error handled in loadRepository
return
}
wasEmpty = repo.IsEmpty
}
option := &repo_module.PushUpdateOptions{
RefFullName: refFullName,
OldCommitID: opts.OldCommitIDs[i],
NewCommitID: opts.NewCommitIDs[i],
PusherID: opts.UserID,
PusherName: opts.UserName,
RepoUserName: ownerName,
RepoName: repoName,
TimeNano: time.Now().UnixNano(),
}
updates = append(updates, option)
if repo.IsEmpty && (refFullName.BranchName() == "master" || refFullName.BranchName() == "main") {
// put the master/main branch first
// FIXME: It doesn't always work, since the master/main branch may not be the first batch of updates.
// If the user pushes many branches at once, the Git hook will call the internal API in batches, rather than all at once.
// See https://github.com/go-gitea/gitea/blob/cb52b17f92e2d2293f7c003649743464492bca48/cmd/hook.go#L27
// If the user executes `git push origin --all` and pushes more than 30 branches, the master/main may not be the default branch.
copy(updates[1:], updates)
updates[0] = option
}
}
}
if repo != nil && len(updates) > 0 {
branchesToSync := make([]*repo_module.PushUpdateOptions, 0, len(updates))
for _, update := range updates {
if !update.RefFullName.IsBranch() {
continue
}
if repo == nil {
repo = loadRepository(ctx, ownerName, repoName)
if ctx.Written() {
return
}
wasEmpty = repo.IsEmpty
}
if update.IsDelRef() {
if err := git_model.AddDeletedBranch(ctx, repo.ID, update.RefFullName.BranchName(), update.PusherID); err != nil {
log.Error("Failed to add deleted branch: %s/%s Error: %v", ownerName, repoName, err)
ctx.JSON(http.StatusInternalServerError, private.HookPostReceiveResult{
Err: fmt.Sprintf("Failed to add deleted branch: %s/%s Error: %v", ownerName, repoName, err),
})
return
}
} else {
branchesToSync = append(branchesToSync, update)
}
}
if len(branchesToSync) > 0 {
if gitRepo == nil {
var err error
gitRepo, err = gitrepo.OpenRepository(ctx, repo)
if err != nil {
log.Error("Failed to open repository: %s/%s Error: %v", ownerName, repoName, err)
ctx.JSON(http.StatusInternalServerError, private.HookPostReceiveResult{
Err: fmt.Sprintf("Failed to open repository: %s/%s Error: %v", ownerName, repoName, err),
})
return
}
}
var (
branchNames = make([]string, 0, len(branchesToSync))
commitIDs = make([]string, 0, len(branchesToSync))
)
for _, update := range branchesToSync {
branchNames = append(branchNames, update.RefFullName.BranchName())
commitIDs = append(commitIDs, update.NewCommitID)
}
if err := repo_service.SyncBranchesToDB(ctx, repo.ID, opts.UserID, branchNames, commitIDs, gitRepo.GetCommit); err != nil {
ctx.JSON(http.StatusInternalServerError, private.HookPostReceiveResult{
Err: fmt.Sprintf("Failed to sync branch to DB in repository: %s/%s Error: %v", ownerName, repoName, err),
})
return
}
}
if err := repo_service.PushUpdates(updates); err != nil {
log.Error("Failed to Update: %s/%s Total Updates: %d", ownerName, repoName, len(updates))
for i, update := range updates {
log.Error("Failed to Update: %s/%s Update: %d/%d: Branch: %s", ownerName, repoName, i, len(updates), update.RefFullName.BranchName())
}
log.Error("Failed to Update: %s/%s Error: %v", ownerName, repoName, err)
ctx.JSON(http.StatusInternalServerError, private.HookPostReceiveResult{
Err: fmt.Sprintf("Failed to Update: %s/%s Error: %v", ownerName, repoName, err),
})
return
}
}
// Handle Push Options
if len(opts.GitPushOptions) > 0 {
// load the repository
if repo == nil {
repo = loadRepository(ctx, ownerName, repoName)
if ctx.Written() {
// Error handled in loadRepository
return
}
wasEmpty = repo.IsEmpty
}
repo.IsPrivate = opts.GitPushOptions.Bool(private.GitPushOptionRepoPrivate, repo.IsPrivate)
repo.IsTemplate = opts.GitPushOptions.Bool(private.GitPushOptionRepoTemplate, repo.IsTemplate)
if err := repo_model.UpdateRepositoryCols(ctx, repo, "is_private", "is_template"); err != nil {
log.Error("Failed to Update: %s/%s Error: %v", ownerName, repoName, err)
ctx.JSON(http.StatusInternalServerError, private.HookPostReceiveResult{
Err: fmt.Sprintf("Failed to Update: %s/%s Error: %v", ownerName, repoName, err),
})
}
}
results := make([]private.HookPostReceiveBranchResult, 0, len(opts.OldCommitIDs))
// We have to reload the repo in case its state is changed above
repo = nil
var baseRepo *repo_model.Repository
// Now handle the pull request notification trailers
for i := range opts.OldCommitIDs {
refFullName := opts.RefFullNames[i]
newCommitID := opts.NewCommitIDs[i]
// post update for agit pull request
// FIXME: use pr.Flow to test whether it's an Agit PR or a GH PR
if git.SupportProcReceive && refFullName.IsPull() {
if repo == nil {
repo = loadRepository(ctx, ownerName, repoName)
if ctx.Written() {
return
}
}
pullIndex, _ := strconv.ParseInt(refFullName.PullName(), 10, 64)
if pullIndex <= 0 {
continue
}
pr, err := issues_model.GetPullRequestByIndex(ctx, repo.ID, pullIndex)
if err != nil && !issues_model.IsErrPullRequestNotExist(err) {
log.Error("Failed to get PR by index %v Error: %v", pullIndex, err)
ctx.JSON(http.StatusInternalServerError, private.Response{
Err: fmt.Sprintf("Failed to get PR by index %v Error: %v", pullIndex, err),
})
return
}
if pr == nil {
continue
}
results = append(results, private.HookPostReceiveBranchResult{
Message: setting.Git.PullRequestPushMessage && repo.AllowsPulls(ctx),
Create: false,
Branch: "",
URL: fmt.Sprintf("%s/pulls/%d", repo.HTMLURL(), pr.Index),
})
continue
}
// If we've pushed a branch (and not deleted it)
if !git.IsEmptyCommitID(newCommitID) && refFullName.IsBranch() {
// First ensure we have the repository loaded, we're allowed pulls requests and we can get the base repo
if repo == nil {
repo = loadRepository(ctx, ownerName, repoName)
if ctx.Written() {
return
}
baseRepo = repo
if repo.IsFork {
if err := repo.GetBaseRepo(ctx); err != nil {
log.Error("Failed to get Base Repository of Forked repository: %-v Error: %v", repo, err)
ctx.JSON(http.StatusInternalServerError, private.HookPostReceiveResult{
Err: fmt.Sprintf("Failed to get Base Repository of Forked repository: %-v Error: %v", repo, err),
RepoWasEmpty: wasEmpty,
})
return
}
if repo.BaseRepo.AllowsPulls(ctx) {
baseRepo = repo.BaseRepo
}
}
if !baseRepo.AllowsPulls(ctx) {
// We can stop there's no need to go any further
ctx.JSON(http.StatusOK, private.HookPostReceiveResult{
RepoWasEmpty: wasEmpty,
})
return
}
}
branch := refFullName.BranchName()
// If our branch is the default branch of an unforked repo - there's no PR to create or refer to
if !repo.IsFork && branch == baseRepo.DefaultBranch {
results = append(results, private.HookPostReceiveBranchResult{})
continue
}
pr, err := issues_model.GetUnmergedPullRequest(ctx, repo.ID, baseRepo.ID, branch, baseRepo.DefaultBranch, issues_model.PullRequestFlowGithub)
if err != nil && !issues_model.IsErrPullRequestNotExist(err) {
log.Error("Failed to get active PR in: %-v Branch: %s to: %-v Branch: %s Error: %v", repo, branch, baseRepo, baseRepo.DefaultBranch, err)
ctx.JSON(http.StatusInternalServerError, private.HookPostReceiveResult{
Err: fmt.Sprintf(
"Failed to get active PR in: %-v Branch: %s to: %-v Branch: %s Error: %v", repo, branch, baseRepo, baseRepo.DefaultBranch, err),
RepoWasEmpty: wasEmpty,
})
return
}
if pr == nil {
if repo.IsFork {
branch = fmt.Sprintf("%s:%s", repo.OwnerName, branch)
}
results = append(results, private.HookPostReceiveBranchResult{
Message: setting.Git.PullRequestPushMessage && baseRepo.AllowsPulls(ctx),
Create: true,
Branch: branch,
URL: fmt.Sprintf("%s/compare/%s...%s", baseRepo.HTMLURL(), util.PathEscapeSegments(baseRepo.DefaultBranch), util.PathEscapeSegments(branch)),
})
} else {
results = append(results, private.HookPostReceiveBranchResult{
Message: setting.Git.PullRequestPushMessage && baseRepo.AllowsPulls(ctx),
Create: false,
Branch: branch,
URL: fmt.Sprintf("%s/pulls/%d", baseRepo.HTMLURL(), pr.Index),
})
}
}
}
ctx.JSON(http.StatusOK, private.HookPostReceiveResult{
Results: results,
RepoWasEmpty: wasEmpty,
})
}