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capture: use IP header payload length for reassembly #142

This commit is contained in:
Kaian 2016-09-05 11:26:06 +02:00
parent f02a242f67
commit 2214d279e2
1 changed files with 2 additions and 2 deletions
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4
src/capture.c
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@ -482,7 +482,7 @@ capture_packet_reasm_ip(capture_info_t *capinfo, const struct pcap_pkthdr *heade
it = vector_iterator(pkt->frames);
while ((frame = vector_iterator_next(&it))) {
struct ip *frame_ip = (struct ip *) (frame->data + link_hl);
len_data += frame->header->caplen - link_hl - frame_ip->ip_hl * 4;
len_data += ntohs(frame_ip->ip_len) - frame_ip->ip_hl * 4;
}
// Check packet content length
@ -498,7 +498,7 @@ capture_packet_reasm_ip(capture_info_t *capinfo, const struct pcap_pkthdr *heade
struct ip *frame_ip = (struct ip *) (frame->data + link_hl);
memcpy(packet + link_hl + ip_hl + (ntohs(frame_ip->ip_off) & IP_OFFMASK) * 8,
frame->data + link_hl + frame_ip->ip_hl * 4,
frame->header->caplen - link_hl - frame_ip->ip_hl * 4);
ntohs(frame_ip->ip_len) - frame_ip->ip_hl * 4);
}
*caplen = link_hl + ip_hl + len_data;