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unknown udp added...

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This commit is contained in:
PAVAN
2018-05-15 18:56:52 +05:30
parent 33fab67135
commit 9baa4aaf34
7 changed files with 115 additions and 35 deletions
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27
src/decpcap.c
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@@ -32,7 +32,7 @@
#include "decpcap.h"
#define DP_DEBUG 0
bool catchall = false;
/* functions to set up a handle (which is basically just a pcap handle) */
struct dp_handle *dp_fillhandle(pcap_t *phandle) {
@@ -139,6 +139,20 @@ void dp_parse_tcp(struct dp_handle *handle, const dp_header *header,
// TODO: maybe `pass on' payload to lower-level protocol parsing
}
void dp_parse_udp(struct dp_handle *handle, const dp_header *header,
const u_char *packet) {
// const struct tcphdr * tcp = (struct tcphdr *) packet;
// u_char * payload = (u_char *) packet + sizeof (struct tcphdr);
if (handle->callback[dp_packet_udp] != NULL) {
int done =
(handle->callback[dp_packet_udp])(handle->userdata, header, packet);
if (done)
return;
}
// TODO: maybe `pass on' payload to lower-level protocol parsing
}
void dp_parse_ip(struct dp_handle *handle, const dp_header *header,
const u_char *packet) {
const struct ip *ip = (struct ip *)packet;
@@ -157,6 +171,11 @@ void dp_parse_ip(struct dp_handle *handle, const dp_header *header,
case IPPROTO_TCP:
dp_parse_tcp(handle, header, payload);
break;
case IPPROTO_UDP:
if(catchall)
dp_parse_udp(handle, header, payload);
//fprintf(stdout, "udp packet...................\n");
break;
default:
// TODO: maybe support for non-tcp IP packets
break;
@@ -178,6 +197,11 @@ void dp_parse_ip6(struct dp_handle *handle, const dp_header *header,
case IPPROTO_TCP:
dp_parse_tcp(handle, header, payload);
break;
case IPPROTO_UDP:
if(catchall)
dp_parse_udp(handle, header, payload);
//fprintf(stdout, "udp packet...................\n");
break;
default:
// TODO: maybe support for non-tcp ipv6 packets
break;
@@ -195,6 +219,7 @@ void dp_parse_ethernet(struct dp_handle *handle, const dp_header *header,
int done = (handle->callback[dp_packet_ethernet])(handle->userdata, header,
packet);
/* return if handle decides we're done */
if (done)
return;