gitlabhq/gitlab-shell

package main

import (
    "fmt"
    "os"
    "reflect"

    grpccodes "google.golang.org/grpc/codes"
    grpcstatus "google.golang.org/grpc/status"

    "gitlab.com/gitlab-org/labkit/fips"
    "gitlab.com/gitlab-org/labkit/log"

    shellCmd "gitlab.com/gitlab-org/gitlab-shell/v14/cmd/gitlab-shell/command"
    "gitlab.com/gitlab-org/gitlab-shell/v14/internal/command"
    "gitlab.com/gitlab-org/gitlab-shell/v14/internal/command/readwriter"
    "gitlab.com/gitlab-org/gitlab-shell/v14/internal/config"
    "gitlab.com/gitlab-org/gitlab-shell/v14/internal/console"
    "gitlab.com/gitlab-org/gitlab-shell/v14/internal/executable"
    "gitlab.com/gitlab-org/gitlab-shell/v14/internal/logger"
    "gitlab.com/gitlab-org/gitlab-shell/v14/internal/sshenv"
)

var (
    // Version is the current version of gitlab-shell
    Version = "(unknown version)" // Set at build time in the Makefile
    // BuildTime signifies the time the binary was build
    BuildTime = "19700101.000000" // Set at build time in the Makefile
)

func main() {
    command.CheckForVersionFlag(os.Args, Version, BuildTime)

    readWriter := &readwriter.ReadWriter{
        Out:    &readwriter.CountingWriter{W: os.Stdout},
        In:     os.Stdin,
        ErrOut: os.Stderr,
    }

    executable, err := executable.New(executable.GitlabShell)
    if err != nil {
        fmt.Fprintln(readWriter.ErrOut, "Failed to determine executable, exiting")
        os.Exit(1)
    }

    config, err := config.NewFromDirExternal(executable.RootDir)
    if err != nil {
        fmt.Fprintln(readWriter.ErrOut, "Failed to read config, exiting")
        os.Exit(1)
    }

    logCloser := logger.Configure(config)
    defer logCloser.Close()

    env := sshenv.NewFromEnv()
    cmd, err := shellCmd.New(os.Args[1:], env, config, readWriter)
    if err != nil {
        // For now this could happen if `SSH_CONNECTION` is not set on
        // the environment
        fmt.Fprintf(readWriter.ErrOut, "%v\n", err)
        os.Exit(1)
    }

    ctx, finished := command.Setup(executable.Name, config)
    defer finished()

    config.GitalyClient.InitSidechannelRegistry(ctx)

    cmdName := reflect.TypeOf(cmd).String()
    ctxlog := log.ContextLogger(ctx)
    ctxlog.WithFields(log.Fields{"env": env, "command": cmdName}).Info("gitlab-shell: main: executing command")
    fips.Check()

    if _, err := cmd.Execute(ctx); err != nil {
        ctxlog.WithError(err).Warn("gitlab-shell: main: command execution failed")
        if grpcstatus.Convert(err).Code() != grpccodes.Internal {
            console.DisplayWarningMessage(err.Error(), readWriter.ErrOut)
        }
        os.Exit(1)
    }

    ctxlog.Info("gitlab-shell: main: command executed successfully")
}