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Whew -- big reorganization to allow ethernet sends of IP packets

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This commit is contained in:
fyodor
2005-07-19 05:07:51 +00:00
parent 0595d89f96
commit 555c986ac3
29 changed files with 1963 additions and 1362 deletions
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57
scan_engine.cc
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@@ -1061,24 +1061,30 @@ void UltraScanInfo::Init(vector<Target *> &Targets, struct scan_lists *pts, styp
rawsd = -1;
ethsd = NULL;
if ((tcp_scan || udp_scan || prot_scan) && scantype != CONNECT_SCAN) {
/* Initialize a raw socket */
if ((rawsd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0 )
pfatal("socket troubles in UltraScanInfo::Init");
/* We do not wan't to unblock the socket since we want to wait
if kernel send buffers fill up rather than get ENOBUF, and
we won't be receiving on the socket anyway
unblock_socket(rawsd);*/
broadcast_socket(rawsd);
if ((tcp_scan || udp_scan || prot_scan || ping_scan_arp) &&
scantype != CONNECT_SCAN) {
if (ping_scan_arp || ((o.sendpref & PACKET_SEND_ETH) &&
Targets[0]->ifType() == devt_ethernet)) {
/* We'll send ethernet packets with dnet */
ethsd = eth_open(Targets[0]->deviceName());
if (ethsd == NULL)
fatal("dnet: Failed to open device %s", Targets[0]->deviceName());
rawsd = -1;
} else {
/* Initialize a raw socket */
if ((rawsd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0 )
pfatal("socket troubles in UltraScanInfo::Init");
/* We do not wan't to unblock the socket since we want to wait
if kernel send buffers fill up rather than get ENOBUF, and
we won't be receiving on the socket anyway
unblock_socket(rawsd);*/
broadcast_socket(rawsd);
#ifndef WIN32
sethdrinclude(rawsd);
sethdrinclude(rawsd);
#endif
} else if (ping_scan_arp) {
ethsd = eth_open(Targets[0]->device);
if (ethsd == NULL)
fatal("dnet: Failed to open device %s", o.device);
}
ethsd = NULL;
}
}
}
/* Consults with the group stats, and the hstats for every
@@ -1918,7 +1924,16 @@ static UltraProbe *sendIPScanProbe(UltraScanInfo *USI, HostScanStats *hss,
u32 ack = 0;
u16 sport;
u16 ipid = get_random_u16();
struct eth_nfo eth;
struct eth_nfo *ethptr = NULL;
if (USI->ethsd) {
memcpy(eth.srcmac, hss->target->SrcMACAddress(), 6);
memcpy(eth.dstmac, hss->target->MACAddress(), 6);
eth.ethsd = USI->ethsd;
eth.devname[0] = '\0';
ethptr = &eth;
}
if (pingseq > 0) {
if (tryno > 0) assert(0); /* tryno + pingseq not currently supported */
sport = o.magic_port_set? o.magic_port : o.magic_port + USI->perf.tryno_cap + pingseq;
@@ -1946,7 +1961,7 @@ static UltraProbe *sendIPScanProbe(UltraScanInfo *USI, HostScanStats *hss,
probe->setIP(packet, packetlen, pspec);
hss->lastprobe_sent = probe->sent = USI->now;
}
send_ip_packet(USI->rawsd, packet, packetlen);
send_ip_packet(USI->rawsd, ethptr, packet, packetlen);
free(packet);
}
} else if (USI->udp_scan) {
@@ -1959,7 +1974,7 @@ static UltraProbe *sendIPScanProbe(UltraScanInfo *USI, HostScanStats *hss,
probe->setIP(packet, packetlen, pspec);
hss->lastprobe_sent = probe->sent = USI->now;
}
send_ip_packet(USI->rawsd, packet, packetlen);
send_ip_packet(USI->rawsd, ethptr, packet, packetlen);
free(packet);
}
} else if (USI->prot_scan) {
@@ -1996,7 +2011,7 @@ static UltraProbe *sendIPScanProbe(UltraScanInfo *USI, HostScanStats *hss,
probe->setIP(packet, packetlen, pspec);
hss->lastprobe_sent = probe->sent = USI->now;
}
send_ip_packet(USI->rawsd, packet, packetlen);
send_ip_packet(USI->rawsd, ethptr, packet, packetlen);
free(packet);
}
@@ -2942,7 +2957,7 @@ static void begin_sniffer(UltraScanInfo *USI, vector<Target *> &Targets) {
}
filterlen = 0;
USI->pd = my_pcap_open_live(Targets[0]->device, 100, (o.spoofsource)? 1 : 0, 2);
USI->pd = my_pcap_open_live(Targets[0]->deviceName(), 100, (o.spoofsource)? 1 : 0, 2);
/* Windows nonsense */
flt_srchost = Targets[0]->v4host().s_addr;
flt_dsthost = Targets[0]->v4source().s_addr;
@@ -2982,7 +2997,7 @@ static void begin_sniffer(UltraScanInfo *USI, vector<Target *> &Targets) {
filterlen = len;
} else assert(0); /* Other scan types? */
if (o.debugging > 2) printf("Pcap filter: %s\n", pcap_filter);
set_pcap_filter(Targets[0], USI->pd, flt_all, pcap_filter);
set_pcap_filter(Targets[0]->deviceName(), USI->pd, flt_all, pcap_filter);
/* pcap_setnonblock(USI->pd, 1, NULL); */
return;