gitlabhq/gitlab-shell

// Package main is the entry point for the gitlab-shell-authorized-keys-check command
package main

import (
    "fmt"
    "os"

    cmd "gitlab.com/gitlab-org/gitlab-shell/v14/cmd/gitlab-shell-authorized-keys-check/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"
)

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
)

const (
    exitCodeSuccess = 0
    exitCodeFailure = 1
)

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

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

    code, err := execute(readWriter)
    if err != nil {
        fmt.Fprintf(readWriter.ErrOut, "%v\n", err)
    }

    os.Exit(int(code))
}

func execute(readWriter *readwriter.ReadWriter) (int, error) {
    executable, err := executable.New(executable.AuthorizedKeysCheck)
    if err != nil {
        return exitCodeFailure, fmt.Errorf("failed to determine executable, exiting")
    }

    config, err := config.NewFromDirExternal(executable.RootDir)
    if err != nil {
        return exitCodeFailure, fmt.Errorf("failed to read config, exiting")
    }

    logCloser := logger.Configure(config)
    defer func() { _ = logCloser.Close() }()

    cmd, err := cmd.New(os.Args[1:], config, readWriter)
    if err != nil {
        // For now this could happen if `SSH_CONNECTION` is not set on
        // the environment
        return exitCodeFailure, err
    }

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

    if _, err = cmd.Execute(ctx); err != nil {
        console.DisplayWarningMessage(err.Error(), readWriter.ErrOut)
        return exitCodeFailure, nil
    }

    return exitCodeSuccess, nil
}