/
key_pull.go
83 lines (69 loc) · 2.01 KB
/
key_pull.go
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// Copyright (c) 2017-2019, Sylabs Inc. All rights reserved.
// This software is licensed under a 3-clause BSD license. Please consult the
// LICENSE.md file distributed with the sources of this project regarding your
// rights to use or distribute this software.
package cli
import (
"fmt"
"os"
"github.com/spf13/cobra"
"github.com/sylabs/singularity/docs"
"github.com/sylabs/singularity/internal/pkg/sylog"
"github.com/sylabs/singularity/pkg/sypgp"
)
func init() {
KeyPullCmd.Flags().SetInterspersed(false)
KeyPullCmd.Flags().StringVarP(&keyServerURL, "url", "u", defaultKeyServer, "specify the key server URL")
KeyPullCmd.Flags().SetAnnotation("url", "envkey", []string{"URL"})
}
// KeyPullCmd is `singularity key pull' and fetches public keys from a key server
var KeyPullCmd = &cobra.Command{
Args: cobra.ExactArgs(1),
DisableFlagsInUseLine: true,
PreRun: sylabsToken,
Run: func(cmd *cobra.Command, args []string) {
if err := doKeyPullCmd(args[0], keyServerURL); err != nil {
sylog.Errorf("pull failed: %s", err)
os.Exit(2)
}
},
Use: docs.KeyPullUse,
Short: docs.KeyPullShort,
Long: docs.KeyPullLong,
Example: docs.KeyPullExample,
}
func doKeyPullCmd(fingerprint string, url string) error {
var count int
// get matching keyring
el, err := sypgp.FetchPubkey(fingerprint, url, authToken, false)
if err != nil {
return err
}
elstore, err := sypgp.LoadPubKeyring()
if err != nil {
return err
}
// store in local cache
fp, err := os.OpenFile(sypgp.PublicPath(), os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0600)
if err != nil {
return err
}
defer fp.Close()
for _, e := range el {
storeKey := true
for _, estore := range elstore {
if e.PrimaryKey.KeyId == estore.PrimaryKey.KeyId {
storeKey = false // Entity is already in key store
break
}
}
if storeKey {
if err = e.Serialize(fp); err != nil {
return err
}
count++
}
}
fmt.Printf("%v key(s) fetched and stored in local cache %s\n", count, sypgp.PublicPath())
return nil
}