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Code Issues Releases Wiki Activity

Native fixes

This commit is contained in:
M66B 2016-01-16 20:26:15 +01:00
parent 81e21c71c5
commit 5f5fdda282
1 changed files with 9 additions and 3 deletions
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12
app/src/main/jni/netguard/netguard.c
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@ -928,11 +928,12 @@ int writeTCP(const struct session *cur,
// Build TCP header
tcp->source = cur->dest;
tcp->dest = cur->source;
tcp->seq = htonl(cur->local_seq);
tcp->ack_seq = htonl(cur->remote_seq + confirm); // TODO proper wrap around
tcp->seq = (rst ? 0 : htonl(cur->local_seq));
tcp->ack_seq = (rst ? 0 : htonl(cur->remote_seq + confirm)); // TODO proper wrap around
tcp->doff = sizeof(struct tcphdr) >> 2;
tcp->syn = syn;
tcp->ack = (datalen > 0 || confirm > 0 || syn);
// TODO why does a FIN need an ACK?
tcp->ack = (datalen > 0 || confirm > 0 || syn || fin);
tcp->fin = fin;
tcp->rst = rst;
tcp->window = htons(TCPWINDOW);
@ -969,6 +970,11 @@ int writeTCP(const struct session *cur,
(tcp->rst ? " RST" : ""),
to, ntohs(tcp->dest),
ntohl(tcp->seq), ntohl(tcp->ack_seq), datalen, confirm);
//if (tcp->fin || tcp->rst) {
// char *h = hex(buffer, len);
// __android_log_print(ANDROID_LOG_DEBUG, TAG, "%s", h);
// free(h);
//}
int res = write(tun, buffer, len);
free(buffer);