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Avoid reassembly of packets bigger than 20Kb

This commit is contained in:
Kaian 2015-09-21 12:15:08 +02:00
parent 7a713e8c1e
commit 02ad96f987
1 changed files with 7 additions and 0 deletions
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7
src/capture_reasm.c
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@ -229,6 +229,13 @@ capture_packet_reasm_tcp(capture_packet_t *packet, struct tcphdr *tcp, u_char *p
// Set initial payload // Set initial payload
capture_packet_set_payload(pkt, payload, size_payload); capture_packet_set_payload(pkt, payload, size_payload);
} else { } else {
// Check payload length. Dont handle too big payload packets
if (pkt->payload_len + size_payload > MAX_CAPTURE_LEN) {
capture_packet_destroy(pkt);
vector_remove(capture_cfg.tcp_reasm, pkt);
return NULL;
}
// Append payload to the existing // Append payload to the existing
new_payload = sng_malloc(pkt->payload_len + size_payload); new_payload = sng_malloc(pkt->payload_len + size_payload);
memcpy(new_payload, pkt->payload, pkt->payload_len); memcpy(new_payload, pkt->payload, pkt->payload_len);