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package gpgbin
import (
"bytes"
"fmt"
"io"
"io/ioutil"
"os"
"git.sr.ht/~rjarry/aerc/models"
)
// Verify runs gpg --verify. If s is not nil, then gpg interprets the
// arguments as a detached signature
func Verify(m io.Reader, s io.Reader) (*models.MessageDetails, error) {
args := []string{"--verify"}
if s != nil {
// Detached sig, save the sig to a tmp file and send msg over stdin
sig, err := ioutil.TempFile("", "sig")
if err != nil {
return nil, err
}
_, _ = io.Copy(sig, s)
sig.Close()
defer os.Remove(sig.Name())
args = append(args, sig.Name(), "-")
}
orig, err := ioutil.ReadAll(m)
if err != nil {
return nil, err
}
g := newGpg(bytes.NewReader(orig), args)
err = g.cmd.Run()
if err != nil {
return nil, fmt.Errorf("gpg: failed to run verification: %w", err)
}
out := bytes.NewReader(g.stdout.Bytes())
md := new(models.MessageDetails)
err = parse(out, md)
if err != nil {
return nil, fmt.Errorf("gpg: failed to parse result: %w", err)
}
md.Body = bytes.NewReader(orig)
return md, nil
}
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