onionscan/protocol/smtp_scanner.go

37 lines
1015 B
Go

package protocol
import (
"bufio"
"crypto/sha1"
"encoding/hex"
"github.com/s-rah/onionscan/config"
"github.com/s-rah/onionscan/report"
"github.com/s-rah/onionscan/utils"
"log"
)
type SMTPProtocolScanner struct {
}
func (sps *SMTPProtocolScanner) ScanProtocol(hiddenService string, onionscanConfig *config.OnionscanConfig, report *report.OnionScanReport) {
// SMTP
log.Printf("Checking %s SMTP(25)\n", hiddenService)
conn, err := utils.GetNetworkConnection(hiddenService, 25, onionscanConfig.TorProxyAddress, onionscanConfig.Timeout)
if err != nil {
log.Printf("Failed to connect to service on port 25\n")
report.SMTPDetected = false
} else {
// TODO SMTP Checking
report.SMTPDetected = true
reader := bufio.NewReader(conn)
banner, err := reader.ReadString('\n')
if err == nil {
report.SMTPBanner = banner
hash := sha1.Sum([]byte(banner))
report.SMTPFingerprint = hex.EncodeToString(hash[:])
log.Printf("Found SMTP Banner: %s (%s)", banner, report.SMTPFingerprint)
}
}
}