open-consul/command/acl/rules/translate.go
Paul Banks 952ee6f546
Allow ACL legacy migration via CLI (#4882)
* Adds a flag to `consul acl token update` that allows legacy ACLs to be upgraded via the CLI.

Also fixes a bug where descriptions are deleted if not specified.

* Remove debug
2018-11-05 14:32:09 +00:00

140 lines
3.2 KiB
Go

package rules
import (
"flag"
"fmt"
"io"
"strings"
"github.com/hashicorp/consul/acl"
aclhelpers "github.com/hashicorp/consul/command/acl"
"github.com/hashicorp/consul/command/flags"
"github.com/hashicorp/consul/command/helpers"
"github.com/mitchellh/cli"
)
func New(ui cli.Ui) *cmd {
c := &cmd{UI: ui}
c.init()
return c
}
type cmd struct {
UI cli.Ui
flags *flag.FlagSet
http *flags.HTTPFlags
help string
tokenAccessor bool
tokenSecret bool
// testStdin is the input for testing
testStdin io.Reader
}
func (c *cmd) init() {
c.flags = flag.NewFlagSet("", flag.ContinueOnError)
c.flags.BoolVar(&c.tokenAccessor, "token-accessor", false, "Specifies that "+
"the TRANSLATE argument refers to a ACL token AccessorID. "+
"The rules to translate will then be read from the retrieved token")
c.flags.BoolVar(&c.tokenSecret, "token-secret", false,
"Specifies that the TRANSLATE argument refers to a ACL token SecretID. "+
"The rules to translate will then be read from the retrieved token")
c.http = &flags.HTTPFlags{}
flags.Merge(c.flags, c.http.ClientFlags())
flags.Merge(c.flags, c.http.ServerFlags())
c.help = flags.Usage(help, c.flags)
}
func (c *cmd) Run(args []string) int {
if err := c.flags.Parse(args); err != nil {
return 1
}
data, err := c.dataFromArgs(c.flags.Args())
if err != nil {
c.UI.Error(fmt.Sprintf("Error! %v", err))
return 1
}
if c.tokenSecret || c.tokenAccessor {
client, err := c.http.APIClient()
if err != nil {
c.UI.Error(fmt.Sprintf("Error connecting to Consul Agent: %s", err))
return 1
}
// Trim whitespace and newlines (e.g. from echo without -n)
data = strings.TrimSpace(data)
if rules, err := aclhelpers.GetRulesFromLegacyToken(client, data, c.tokenSecret); err != nil {
c.UI.Error(err.Error())
return 1
} else {
data = rules
}
}
translated, err := acl.TranslateLegacyRules([]byte(data))
if err != nil {
c.UI.Error(fmt.Sprintf("Error translating rules: %s", err))
return 1
}
c.UI.Info(string(translated))
return 0
}
func (c *cmd) dataFromArgs(args []string) (string, error) {
switch len(args) {
case 0:
return "", fmt.Errorf("Missing TRANSLATE argument")
case 1:
data, err := helpers.LoadDataSource(args[0], c.testStdin)
if err != nil {
return "", err
}
return data, nil
default:
return "", fmt.Errorf("Too many arguments: expected 1 got %d", len(args))
}
}
func (c *cmd) Synopsis() string {
return synopsis
}
func (c *cmd) Help() string {
return flags.Usage(c.help, nil)
}
const synopsis = "Translate the legacy rule syntax into the current syntax"
const help = `
Usage: consul acl translate-rules [options] TRANSLATE
Translates the legacy ACL rule syntax into the current syntax.
Translate rules within a file:
$ consul acl translate-rules @rules.hcl
Translate rules from stdin:
$ consul acl translate-rules -
Translate rules from a string argument:
$ consul acl translate-rules 'key "" { policy = "write"}'
Translate rules for a legacy ACL token using its SecretID passed from stdin:
$ consul acl translate-rules -token-secret -
Translate rules for a legacy ACL token using its AccessorID:
$ consul acl translate-rules -token-accessor 429cd746-03d5-4bbb-a83a-18b164171c89
`