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package hook
import (
"errors"
"os/exec"
"path/filepath"
"gitlab.com/gitlab-org/gitaly/internal/config"
"gitlab.com/gitlab-org/gitaly/internal/git/alternates"
"gitlab.com/gitlab-org/gitaly/internal/gitlabshell"
"gitlab.com/gitlab-org/gitaly/internal/helper"
"gitlab.com/gitlab-org/gitaly/proto/go/gitalypb"
"gitlab.com/gitlab-org/gitaly/streamio"
)
type hookRequest interface {
GetEnvironmentVariables() []string
GetRepository() *gitalypb.Repository
}
func hookRequestEnv(req hookRequest) []string {
return append(gitlabshell.Env(), req.GetEnvironmentVariables()...)
}
func preReceiveEnv(req hookRequest) ([]string, error) {
_, env, err := alternates.PathAndEnv(req.GetRepository())
if err != nil {
return nil, err
}
return append(hookRequestEnv(req), env...), nil
}
func gitlabShellHook(hookName string) string {
return filepath.Join(config.Config.Ruby.Dir, "gitlab-shell", "hooks", hookName)
}
func (s *server) PreReceiveHook(stream gitalypb.HookService_PreReceiveHookServer) error {
firstRequest, err := stream.Recv()
if err != nil {
return helper.ErrInternal(err)
}
if err := validatePreReceiveHookRequest(firstRequest); err != nil {
return helper.ErrInvalidArgument(err)
}
stdin := streamio.NewReader(func() ([]byte, error) {
req, err := stream.Recv()
return req.GetStdin(), err
})
stdout := streamio.NewWriter(func(p []byte) error { return stream.Send(&gitalypb.PreReceiveHookResponse{Stdout: p}) })
stderr := streamio.NewWriter(func(p []byte) error { return stream.Send(&gitalypb.PreReceiveHookResponse{Stderr: p}) })
repoPath, err := helper.GetRepoPath(firstRequest.GetRepository())
if err != nil {
return helper.ErrInternal(err)
}
c := exec.Command(gitlabShellHook("pre-receive"))
c.Dir = repoPath
env, err := preReceiveEnv(firstRequest)
if err != nil {
return helper.ErrInternal(err)
}
status, err := streamCommandResponse(
stream.Context(),
stdin,
stdout, stderr,
c,
env,
)
if err != nil {
return helper.ErrInternal(err)
}
if err := stream.SendMsg(&gitalypb.PreReceiveHookResponse{
ExitStatus: &gitalypb.ExitStatus{Value: status},
}); err != nil {
return helper.ErrInternal(err)
}
return nil
}
func validatePreReceiveHookRequest(in *gitalypb.PreReceiveHookRequest) error {
if in.GetRepository() == nil {
return errors.New("repository is empty")
}
return nil
}
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