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analyzer-d4-pibs
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chg: [pibs] Write raw pcaps with packets matching potential backscatter

master
Gerard Wagener 2019-03-18 14:54:01 +01:00
parent 8b14d8ecce
commit b74ade61dd
1 changed files with 16 additions and 2 deletions
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18
bin/pibs.c
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@ -256,12 +256,18 @@ void insert_ip(pibs_t* pibs, uint32_t ip, uint32_t ts)
} }
void process_frame(pibs_t* pibs, wtap *wth, void process_frame(pibs_t* pibs, wtap *wth,
uint8_t *buf, size_t length) uint8_t *eth)
{ {
struct ip* ipv4; struct ip* ipv4;
uint32_t ip; uint32_t ip;
struct tcphdr* tcp; struct tcphdr* tcp;
int_fast64_t lastseen; int_fast64_t lastseen;
unsigned char* buf;
size_t length;
struct pcap_pkthdr pchdr;
buf = eth+14;
length = wth->rec.rec_header.packet_header.caplen-14;
if (length < sizeof(struct ip)) { if (length < sizeof(struct ip)) {
return; return;
@ -297,6 +303,14 @@ void process_frame(pibs_t* pibs, wtap *wth,
} }
//TODO relative time //TODO relative time
//Purge old ips? //Purge old ips?
if (pibs->should_writepcap) {
pchdr.ts.tv_sec = wth->rec.ts.secs;
//TODO other part of the timestamp
pchdr.ts.tv_usec = 0;
pchdr.caplen = wth->rec.rec_header.packet_header.caplen;
pchdr.len = wth->rec.rec_header.packet_header.len;
pcap_dump((u_char*)pibs->dumper, &pchdr, eth);
}
} }
void process_file(pibs_t* pibs) void process_file(pibs_t* pibs)
@ -325,7 +339,7 @@ void process_file(pibs_t* pibs)
ethertype = buf[12] << 8 | buf[13]; ethertype = buf[12] << 8 | buf[13];
// TODO Focus on IPv4 only // TODO Focus on IPv4 only
if (ethertype == 0x0800) { if (ethertype == 0x0800) {
process_frame(pibs, wth, buf+14, wth->rec.rec_header.packet_header.caplen -14); process_frame(pibs, wth, buf);
} }
} }
} }