onionscan/scans/pgp_content_scan.go

65 lines
1.7 KiB
Go

package scans
import (
"github.com/s-rah/onionscan/report"
"golang.org/x/crypto/openpgp"
"golang.org/x/crypto/openpgp/armor"
//pgpPacket "golang.org/x/crypto/openpgp/packet"
"log"
"regexp"
"strings"
"bytes"
)
type PGPContentScan struct {
}
func (cs *PGPContentScan) ScanContent(content string, report *report.OnionScanReport) {
log.Printf("Scanning for PGP Key\n")
pgpRegexp := regexp.MustCompile("-----BEGIN PGP PUBLIC KEY BLOCK-----((?s).*)-----END PGP PUBLIC KEY BLOCK-----")
foundPGP := pgpRegexp.FindAllString(content, -1)
for _, keyString := range foundPGP {
log.Printf("\tFound key: %s\n", keyString)
buf := bytes.NewBuffer([]byte(keyString))
block, err := armor.Decode(buf)
if err != nil {
log.Printf("error decoding: %s\n", err)
} else {
log.Printf("Block: %s\n", block)
log.Printf("body: %s\n", block.Body)
//packet, err := pgpPacket.Read(block.Body)
/*if err != nil {
log.Printf("Read error: %s", err)
}*/
/*pk, ok := packet.(*pgpPacket.PublicKeyV3)
if !ok {
log.Printf("failed to parse, got: %s", packet)
}*/
//log.Printf("fingerprint: %s\n", pk.Fingerprint)
}
keys, err := openpgp.ReadArmoredKeyRing(strings.NewReader(keyString));
if err != nil {
log.Printf("ERROR: %s\n", err)
continue
}
if len(keys) != 1 || len(keys[0].Subkeys) != 1 {
log.Printf("ERROR: failed to accept key\n")
continue
}
for name, identity := range keys[0].Identities {
log.Printf("identity: %s,%s,%s\n", name, identity.Name, identity.UserId)
}
pubkey := keys[0].Subkeys[0].PublicKey
log.Printf("pubkey: %X", pubkey.Fingerprint)
//pk3 := pubkey.(*pgpPacket.PublicKeyV3)
report.AddPGPKey(keyString)
}
}