forgejo/tests/integration/git_push_test.go
Gergely Nagy aacc13fca8 hooks: Harden when we accept push options that change repo settings
It is possible to change some repo settings (its visibility, and
template status) via `git push` options: `-o repo.private=true`, `-o
repo.template=true`.

Previously, there weren't sufficient permission checks on these, and
anyone who could `git push` to a repository - including via an AGit
workflow! - was able to change either of these settings. To guard
against this, the pre-receive hook will now check if either of these
options are present, and if so, will perform additional permission
checks to ensure that these can only be set by a repository owner or
an administrator. Additionally, changing these settings is disabled for
forks, even for the fork's owner.

There's still a case where the owner of a repository can change the
visibility of it, and it will not propagate to forks (it propagates to
forks when changing the visibility via the API), but that's an
inconsistency, not a security issue.

Signed-off-by: Gergely Nagy <forgejo@gergo.csillger.hu>
Signed-off-by: Earl Warren <contact@earl-warren.org>
(cherry picked from commit 8eba631f8d)
2024-04-20 05:58:39 +00:00

241 lines
8.6 KiB
Go

// Copyright 2024 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package integration
import (
"fmt"
"net/url"
"testing"
"time"
"code.gitea.io/gitea/models/db"
git_model "code.gitea.io/gitea/models/git"
repo_model "code.gitea.io/gitea/models/repo"
"code.gitea.io/gitea/models/unittest"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
repo_module "code.gitea.io/gitea/modules/repository"
"code.gitea.io/gitea/modules/test"
repo_service "code.gitea.io/gitea/services/repository"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestGitPush(t *testing.T) {
onGiteaRun(t, testGitPush)
}
func testGitPush(t *testing.T, u *url.URL) {
t.Run("Push branches at once", func(t *testing.T) {
runTestGitPush(t, u, func(t *testing.T, gitPath string) (pushed, deleted []string) {
for i := 0; i < 100; i++ {
branchName := fmt.Sprintf("branch-%d", i)
pushed = append(pushed, branchName)
doGitCreateBranch(gitPath, branchName)(t)
}
pushed = append(pushed, "master")
doGitPushTestRepository(gitPath, "origin", "--all")(t)
return pushed, deleted
})
})
t.Run("Push branches one by one", func(t *testing.T) {
runTestGitPush(t, u, func(t *testing.T, gitPath string) (pushed, deleted []string) {
for i := 0; i < 100; i++ {
branchName := fmt.Sprintf("branch-%d", i)
doGitCreateBranch(gitPath, branchName)(t)
doGitPushTestRepository(gitPath, "origin", branchName)(t)
pushed = append(pushed, branchName)
}
return pushed, deleted
})
})
t.Run("Delete branches", func(t *testing.T) {
runTestGitPush(t, u, func(t *testing.T, gitPath string) (pushed, deleted []string) {
doGitPushTestRepository(gitPath, "origin", "master")(t) // make sure master is the default branch instead of a branch we are going to delete
pushed = append(pushed, "master")
for i := 0; i < 100; i++ {
branchName := fmt.Sprintf("branch-%d", i)
pushed = append(pushed, branchName)
doGitCreateBranch(gitPath, branchName)(t)
}
doGitPushTestRepository(gitPath, "origin", "--all")(t)
for i := 0; i < 10; i++ {
branchName := fmt.Sprintf("branch-%d", i)
doGitPushTestRepository(gitPath, "origin", "--delete", branchName)(t)
deleted = append(deleted, branchName)
}
return pushed, deleted
})
})
t.Run("Push to deleted branch", func(t *testing.T) {
runTestGitPush(t, u, func(t *testing.T, gitPath string) (pushed, deleted []string) {
doGitPushTestRepository(gitPath, "origin", "master")(t) // make sure master is the default branch instead of a branch we are going to delete
pushed = append(pushed, "master")
doGitCreateBranch(gitPath, "branch-1")(t)
doGitPushTestRepository(gitPath, "origin", "branch-1")(t)
pushed = append(pushed, "branch-1")
// delete and restore
doGitPushTestRepository(gitPath, "origin", "--delete", "branch-1")(t)
doGitPushTestRepository(gitPath, "origin", "branch-1")(t)
return pushed, deleted
})
})
}
func runTestGitPush(t *testing.T, u *url.URL, gitOperation func(t *testing.T, gitPath string) (pushed, deleted []string)) {
user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
repo, err := repo_service.CreateRepository(db.DefaultContext, user, user, repo_service.CreateRepoOptions{
Name: "repo-to-push",
Description: "test git push",
AutoInit: false,
DefaultBranch: "main",
IsPrivate: false,
})
require.NoError(t, err)
require.NotEmpty(t, repo)
gitPath := t.TempDir()
doGitInitTestRepository(gitPath)(t)
oldPath := u.Path
oldUser := u.User
defer func() {
u.Path = oldPath
u.User = oldUser
}()
u.Path = repo.FullName() + ".git"
u.User = url.UserPassword(user.LowerName, userPassword)
doGitAddRemote(gitPath, "origin", u)(t)
gitRepo, err := git.OpenRepository(git.DefaultContext, gitPath)
require.NoError(t, err)
defer gitRepo.Close()
pushedBranches, deletedBranches := gitOperation(t, gitPath)
dbBranches := make([]*git_model.Branch, 0)
require.NoError(t, db.GetEngine(db.DefaultContext).Where("repo_id=?", repo.ID).Find(&dbBranches))
assert.Equalf(t, len(pushedBranches), len(dbBranches), "mismatched number of branches in db")
dbBranchesMap := make(map[string]*git_model.Branch, len(dbBranches))
for _, branch := range dbBranches {
dbBranchesMap[branch.Name] = branch
}
deletedBranchesMap := make(map[string]bool, len(deletedBranches))
for _, branchName := range deletedBranches {
deletedBranchesMap[branchName] = true
}
for _, branchName := range pushedBranches {
branch, ok := dbBranchesMap[branchName]
deleted := deletedBranchesMap[branchName]
assert.True(t, ok, "branch %s not found in database", branchName)
assert.Equal(t, deleted, branch.IsDeleted, "IsDeleted of %s is %v, but it's expected to be %v", branchName, branch.IsDeleted, deleted)
commitID, err := gitRepo.GetBranchCommitID(branchName)
require.NoError(t, err)
assert.Equal(t, commitID, branch.CommitID)
}
require.NoError(t, repo_service.DeleteRepositoryDirectly(db.DefaultContext, user, repo.ID))
}
func TestOptionsGitPush(t *testing.T) {
onGiteaRun(t, testOptionsGitPush)
}
func testOptionsGitPush(t *testing.T, u *url.URL) {
user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
repo, err := repo_service.CreateRepository(db.DefaultContext, user, user, repo_service.CreateRepoOptions{
Name: "repo-to-push",
Description: "test git push",
AutoInit: false,
DefaultBranch: "main",
IsPrivate: false,
})
require.NoError(t, err)
require.NotEmpty(t, repo)
gitPath := t.TempDir()
doGitInitTestRepository(gitPath)(t)
u.Path = repo.FullName() + ".git"
u.User = url.UserPassword(user.LowerName, userPassword)
doGitAddRemote(gitPath, "origin", u)(t)
t.Run("Unknown push options are rejected", func(t *testing.T) {
logChecker, cleanup := test.NewLogChecker(log.DEFAULT, log.TRACE)
logChecker.Filter("unknown option").StopMark("Git push options validation")
defer cleanup()
branchName := "branch0"
doGitCreateBranch(gitPath, branchName)(t)
doGitPushTestRepositoryFail(gitPath, "origin", branchName, "-o", "repo.template=false", "-o", "uknownoption=randomvalue")(t)
logFiltered, logStopped := logChecker.Check(5 * time.Second)
assert.True(t, logStopped)
assert.True(t, logFiltered[0])
})
t.Run("Owner sets private & template to true via push options", func(t *testing.T) {
branchName := "branch1"
doGitCreateBranch(gitPath, branchName)(t)
doGitPushTestRepository(gitPath, "origin", branchName, "-o", "repo.private=true", "-o", "repo.template=true")(t)
repo, err := repo_model.GetRepositoryByOwnerAndName(db.DefaultContext, user.Name, "repo-to-push")
require.NoError(t, err)
require.True(t, repo.IsPrivate)
require.True(t, repo.IsTemplate)
})
t.Run("Owner sets private & template to false via push options", func(t *testing.T) {
branchName := "branch2"
doGitCreateBranch(gitPath, branchName)(t)
doGitPushTestRepository(gitPath, "origin", branchName, "-o", "repo.private=false", "-o", "repo.template=false")(t)
repo, err = repo_model.GetRepositoryByOwnerAndName(db.DefaultContext, user.Name, "repo-to-push")
require.NoError(t, err)
require.False(t, repo.IsPrivate)
require.False(t, repo.IsTemplate)
})
// create a collaborator with write access
collaborator := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 5})
u.User = url.UserPassword(collaborator.LowerName, userPassword)
doGitAddRemote(gitPath, "collaborator", u)(t)
repo_module.AddCollaborator(db.DefaultContext, repo, collaborator)
t.Run("Collaborator with write access is allowed to push", func(t *testing.T) {
branchName := "branch3"
doGitCreateBranch(gitPath, branchName)(t)
doGitPushTestRepository(gitPath, "collaborator", branchName)(t)
})
t.Run("Collaborator with write access fails to change private & template via push options", func(t *testing.T) {
logChecker, cleanup := test.NewLogChecker(log.DEFAULT, log.TRACE)
logChecker.Filter("permission denied for changing repo settings").StopMark("Git push options validation")
defer cleanup()
branchName := "branch4"
doGitCreateBranch(gitPath, branchName)(t)
doGitPushTestRepositoryFail(gitPath, "collaborator", branchName, "-o", "repo.private=true", "-o", "repo.template=true")(t)
repo, err = repo_model.GetRepositoryByOwnerAndName(db.DefaultContext, user.Name, "repo-to-push")
require.NoError(t, err)
require.False(t, repo.IsPrivate)
require.False(t, repo.IsTemplate)
logFiltered, logStopped := logChecker.Check(5 * time.Second)
assert.True(t, logStopped)
assert.True(t, logFiltered[0])
})
require.NoError(t, repo_service.DeleteRepositoryDirectly(db.DefaultContext, user, repo.ID))
}