mirror of https://github.com/octoleo/restic.git
130 lines
3.1 KiB
Go
130 lines
3.1 KiB
Go
package main
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import (
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"bufio"
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"bytes"
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"fmt"
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"log"
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"os"
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"runtime"
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"github.com/restic/restic/internal/debug"
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"github.com/restic/restic/internal/options"
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"github.com/restic/restic/internal/restic"
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"github.com/spf13/cobra"
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"github.com/restic/restic/internal/errors"
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)
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// cmdRoot is the base command when no other command has been specified.
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var cmdRoot = &cobra.Command{
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Use: "restic",
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Short: "Backup and restore files",
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Long: `
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restic is a backup program which allows saving multiple revisions of files and
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directories in an encrypted repository stored on different backends.
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`,
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SilenceErrors: true,
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SilenceUsage: true,
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DisableAutoGenTag: true,
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PersistentPreRunE: func(c *cobra.Command, args []string) error {
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// set verbosity, default is one
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globalOptions.verbosity = 1
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if globalOptions.Quiet && globalOptions.Verbose > 0 {
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return errors.Fatal("--quiet and --verbose cannot be specified at the same time")
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}
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switch {
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case globalOptions.Verbose >= 2:
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globalOptions.verbosity = 3
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case globalOptions.Verbose > 0:
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globalOptions.verbosity = 2
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case globalOptions.Quiet:
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globalOptions.verbosity = 0
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}
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// parse extended options
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opts, err := options.Parse(globalOptions.Options)
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if err != nil {
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return err
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}
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globalOptions.extended = opts
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if !needsPassword(c.Name()) {
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return nil
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}
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pwd, err := resolvePassword(globalOptions, "RESTIC_PASSWORD")
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if err != nil {
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fmt.Fprintf(os.Stderr, "Resolving password failed: %v\n", err)
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Exit(1)
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}
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globalOptions.password = pwd
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// run the debug functions for all subcommands (if build tag "debug" is
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// enabled)
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if err := runDebug(); err != nil {
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return err
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}
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return nil
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},
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}
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// Distinguish commands that need the password from those that work without,
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// so we don't run $RESTIC_PASSWORD_COMMAND for no reason (it might prompt the
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// user for authentication).
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func needsPassword(cmd string) bool {
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switch cmd {
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case "cache", "generate", "help", "options", "self-update", "version":
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return false
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default:
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return true
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}
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}
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var logBuffer = bytes.NewBuffer(nil)
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func init() {
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// install custom global logger into a buffer, if an error occurs
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// we can show the logs
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log.SetOutput(logBuffer)
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}
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func main() {
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debug.Log("main %#v", os.Args)
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debug.Log("restic %s compiled with %v on %v/%v",
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version, runtime.Version(), runtime.GOOS, runtime.GOARCH)
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err := cmdRoot.ExecuteContext(internalGlobalCtx)
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switch {
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case restic.IsAlreadyLocked(err):
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fmt.Fprintf(os.Stderr, "%v\nthe `unlock` command can be used to remove stale locks\n", err)
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case err == ErrInvalidSourceData:
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fmt.Fprintf(os.Stderr, "Warning: %v\n", err)
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case errors.IsFatal(err):
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fmt.Fprintf(os.Stderr, "%v\n", err)
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case err != nil:
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fmt.Fprintf(os.Stderr, "%+v\n", err)
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if logBuffer.Len() > 0 {
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fmt.Fprintf(os.Stderr, "also, the following messages were logged by a library:\n")
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sc := bufio.NewScanner(logBuffer)
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for sc.Scan() {
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fmt.Fprintln(os.Stderr, sc.Text())
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}
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}
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}
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var exitCode int
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switch err {
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case nil:
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exitCode = 0
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case ErrInvalidSourceData:
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exitCode = 3
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default:
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exitCode = 1
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}
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Exit(exitCode)
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}
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