mirror of
https://github.com/optim-enterprises-bv/vault.git
synced 2025-11-03 12:07:54 +00:00
134 lines
3.2 KiB
Go
134 lines
3.2 KiB
Go
package command
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import (
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"bytes"
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"encoding/json"
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"flag"
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"fmt"
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"strings"
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"github.com/hashicorp/go-uuid"
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"github.com/hashicorp/vault/api"
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"github.com/hashicorp/vault/meta"
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)
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const (
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wrappedResponseLocation = "cubbyhole/response"
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)
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// UnwrapCommand is a Command that behaves like ReadCommand but specifically
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// for unwrapping cubbyhole-wrapped secrets
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type UnwrapCommand struct {
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meta.Meta
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}
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func (c *UnwrapCommand) Run(args []string) int {
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var format string
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var field string
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var err error
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var secret *api.Secret
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var flags *flag.FlagSet
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flags = c.Meta.FlagSet("unwrap", meta.FlagSetDefault)
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flags.StringVar(&format, "format", "table", "")
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flags.StringVar(&field, "field", "", "")
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flags.Usage = func() { c.Ui.Error(c.Help()) }
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if err := flags.Parse(args); err != nil {
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return 1
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}
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args = flags.Args()
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if len(args) != 1 || len(args[0]) == 0 {
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c.Ui.Error("Unwrap expects one argument: the ID of the wrapping token")
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flags.Usage()
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return 1
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}
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tokenID := args[0]
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_, err = uuid.ParseUUID(tokenID)
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if err != nil {
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c.Ui.Error(fmt.Sprintf(
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"Given token could not be parsed as a UUID: %s", err))
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return 1
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}
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client, err := c.Client()
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if err != nil {
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c.Ui.Error(fmt.Sprintf(
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"Error initializing client: %s", err))
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return 2
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}
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client.SetToken(tokenID)
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secret, err = c.getUnwrappedResponse(client)
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if err != nil {
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c.Ui.Error(err.Error())
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return 1
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}
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if secret == nil {
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c.Ui.Error("Secret returned was nil")
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return 1
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}
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// Handle single field output
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if field != "" {
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return PrintRawField(c.Ui, secret, field)
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}
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return OutputSecret(c.Ui, format, secret)
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}
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// getUnwrappedResponse is a helper to do the actual reading and unwrapping
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func (c *UnwrapCommand) getUnwrappedResponse(client *api.Client) (*api.Secret, error) {
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secret, err := client.Logical().Read(wrappedResponseLocation)
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if err != nil {
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return nil, fmt.Errorf("Error reading %s: %s", wrappedResponseLocation, err)
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}
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if secret == nil {
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return nil, fmt.Errorf("No value found at %s", wrappedResponseLocation)
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}
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if secret.Data == nil {
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return nil, fmt.Errorf("\"data\" not found in wrapping response")
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}
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if _, ok := secret.Data["response"]; !ok {
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return nil, fmt.Errorf("\"response\" not found in wrapping response \"data\" map")
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}
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wrappedSecret := new(api.Secret)
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buf := bytes.NewBufferString(secret.Data["response"].(string))
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dec := json.NewDecoder(buf)
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dec.UseNumber()
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if err := dec.Decode(wrappedSecret); err != nil {
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return nil, fmt.Errorf("Error unmarshaling wrapped secret: %s", err)
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}
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return wrappedSecret, nil
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}
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func (c *UnwrapCommand) Synopsis() string {
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return "Unwrap a wrapped secret"
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}
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func (c *UnwrapCommand) Help() string {
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helpText := `
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Usage: vault unwrap [options] <wrapping token ID>
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Unwrap a wrapped secret.
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Unwraps the data wrapped by the given token ID. The returned result is the
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same as a 'read' operation on a non-wrapped secret.
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General Options:
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` + meta.GeneralOptionsUsage() + `
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Read Options:
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-format=table The format for output. By default it is a whitespace-
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delimited table. This can also be json or yaml.
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-field=field If included, the raw value of the specified field
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will be output raw to stdout.
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`
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return strings.TrimSpace(helpText)
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}
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