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cmd.go
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cmd.go
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package main
import (
"errors"
"flag"
"fmt"
"io/ioutil"
"log"
"os"
"github.com/bketelsen/crypt/backend"
"github.com/bketelsen/crypt/backend/consul"
"github.com/bketelsen/crypt/backend/etcd"
"github.com/bketelsen/crypt/encoding/secconf"
)
func getCmd(flagset *flag.FlagSet) {
flagset.Usage = func() {
fmt.Fprintf(os.Stderr, "usage: %s get [args...] key\n", os.Args[0])
flagset.PrintDefaults()
}
flagset.StringVar(&secretKeyring, "secret-keyring", ".secring.gpg", "path to armored secret keyring")
flagset.Parse(os.Args[2:])
key := flagset.Arg(0)
if key == "" {
flagset.Usage()
os.Exit(1)
}
backendStore, err := getBackendStore(backendName, endpoint)
if err != nil {
log.Fatal(err)
}
if plaintext {
value, err := getPlain(key, backendStore)
if err != nil {
log.Fatal(err)
}
fmt.Printf("%s\n", value)
return
}
value, err := getEncrypted(key, secretKeyring, backendStore)
if err != nil {
log.Fatal(err)
}
fmt.Printf("%s\n", value)
}
func versionCmd(flagset *flag.FlagSet, ver string) {
flagset.Usage = func() {
fmt.Fprintf(os.Stderr, "usage: %s version\n", os.Args[0])
flagset.PrintDefaults()
}
fmt.Println(ver)
}
func getEncrypted(key, keyring string, store backend.Store) ([]byte, error) {
var value []byte
kr, err := os.Open(keyring)
if err != nil {
return value, err
}
defer kr.Close()
data, err := store.Get(key)
if err != nil {
return value, err
}
value, err = secconf.Decode(data, kr)
if err != nil {
return value, err
}
return value, err
}
func getPlain(key string, store backend.Store) ([]byte, error) {
var value []byte
data, err := store.Get(key)
if err != nil {
return value, err
}
return data, err
}
func listCmd(flagset *flag.FlagSet) {
flagset.Usage = func() {
fmt.Fprintf(os.Stderr, "usage: %s list [args...] key\n", os.Args[0])
flagset.PrintDefaults()
}
flagset.StringVar(&secretKeyring, "secret-keyring", ".secring.gpg", "path to armored secret keyring")
flagset.Parse(os.Args[2:])
key := flagset.Arg(0)
if key == "" {
flagset.Usage()
os.Exit(1)
}
backendStore, err := getBackendStore(backendName, endpoint)
if err != nil {
log.Fatal(err)
}
if plaintext {
list, err := listPlain(key, backendStore)
if err != nil {
log.Fatal(err)
}
for _, kv := range list {
fmt.Printf("%s: %s", kv.Key, kv.Value)
}
return
}
list, err := listEncrypted(key, secretKeyring, backendStore)
if err != nil {
log.Fatal(err)
}
for _, kv := range list {
fmt.Printf("%s: %s", kv.Key, kv.Value)
}
}
func listEncrypted(key, keyring string, store backend.Store) (backend.KVPairs, error) {
kr, err := os.Open(keyring)
if err != nil {
return nil, err
}
defer kr.Close()
data, err := store.List(key)
if err != nil {
return nil, err
}
for i, kv := range data {
data[i].Value, err = secconf.Decode(kv.Value, kr)
kr.Seek(0, 0)
if err != nil {
return nil, err
}
}
return data, err
}
func listPlain(key string, store backend.Store) (backend.KVPairs, error) {
data, err := store.List(key)
if err != nil {
return nil, err
}
return data, err
}
func setCmd(flagset *flag.FlagSet) {
flagset.Usage = func() {
fmt.Fprintf(os.Stderr, "usage: %s set [args...] key file\n", os.Args[0])
flagset.PrintDefaults()
}
flagset.StringVar(&keyring, "keyring", ".pubring.gpg", "path to armored public keyring")
flagset.Parse(os.Args[2:])
key := flagset.Arg(0)
if key == "" {
flagset.Usage()
os.Exit(1)
}
data := flagset.Arg(1)
if data == "" {
flagset.Usage()
os.Exit(1)
}
backendStore, err := getBackendStore(backendName, endpoint)
if err != nil {
log.Fatal(err)
}
d, err := ioutil.ReadFile(data)
if err != nil {
log.Fatal(err)
}
if plaintext {
err := setPlain(key, backendStore, d)
if err != nil {
log.Fatal(err)
return
}
return
}
err = setEncrypted(key, keyring, d, backendStore)
if err != nil {
log.Fatal(err)
}
return
}
func setPlain(key string, store backend.Store, d []byte) error {
err := store.Set(key, d)
return err
}
func setEncrypted(key, keyring string, d []byte, store backend.Store) error {
kr, err := os.Open(keyring)
if err != nil {
return err
}
defer kr.Close()
secureValue, err := secconf.Encode(d, kr)
if err != nil {
return err
}
err = store.Set(key, secureValue)
return err
}
func getBackendStore(provider string, endpoint string) (backend.Store, error) {
if endpoint == "" {
switch provider {
case "consul":
endpoint = "127.0.0.1:8500"
case "etcd":
endpoint = "http://127.0.0.1:4001"
}
}
machines := []string{endpoint}
switch provider {
case "etcd":
return etcd.New(machines)
case "consul":
return consul.New(machines)
default:
return nil, errors.New("invalid backend " + provider)
}
}