- EVP_EncryptInit(&ctx, n->cipher, n->key, n->key + n->cipher->key_len);
- EVP_EncryptUpdate(&ctx, outpkt.salt, &outlen, inpkt->salt, inpkt->len + sizeof(inpkt->salt));
- EVP_EncryptFinal(&ctx, outpkt.salt + outlen, &outpad);
- outlen += outpad;
-
- if((sendto(udp_socket, (char *) outpkt.salt, outlen, 0, n->address->ai_addr, n->address->ai_addrlen)) < 0)
+ if(compress2(outpkt->data, &complen, inpkt->data, inpkt->len, n->compression) != Z_OK)
+ {
+ syslog(LOG_ERR, _("Error while compressing packet to %s (%s)"), n->name, n->hostname);
+ return;
+ }
+
+ outpkt->len = complen;
+ inpkt = outpkt;
+ }
+
+ /* Add sequence number */
+
+ inpkt->seqno = htonl(++(n->sent_seqno));
+ inpkt->len += sizeof(inpkt->seqno);
+
+ /* Encrypt the packet */
+
+ if(n->cipher)
+ {
+ outpkt = pkt[nextpkt++];
+
+ EVP_EncryptInit(&ctx, n->cipher, n->key, n->key + n->cipher->key_len);
+ EVP_EncryptUpdate(&ctx, (char *)&outpkt->seqno, &outlen, (char *)&inpkt->seqno, inpkt->len);
+ EVP_EncryptFinal(&ctx, (char *)&outpkt->seqno + outlen, &outpad);
+
+ outpkt->len = outlen + outpad;
+ inpkt = outpkt;
+ }
+
+ /* Add the message authentication code */
+
+ if(n->digest && n->maclength)
+ {
+ HMAC(n->digest, n->key, n->keylength, (char *)&inpkt->seqno, inpkt->len, (char *)&inpkt->seqno + inpkt->len, &outlen);
+ inpkt->len += n->maclength;
+ }
+
+ /* Send the packet */
+
+ to.sin_family = AF_INET;
+ to.sin_addr.s_addr = htonl(n->address);
+ to.sin_port = htons(n->port);
+
+ if((sendto(udp_socket, (char *)&inpkt->seqno, inpkt->len, 0, (const struct sockaddr *)&to, tolen)) < 0)