/* IEEE 802.3 stuff -- i will concentrate on .11 stuff before! */
#include <netinet/if_ether.h>
+#include <netinet/ip.h> /* ip */
+#include <netinet/in.h> /* in_addr */
/* IEEE 802.11 stuff -- will become one include later ... */
#include "ieee80211.h" /* from hunz's aeolus, short hostap_wlan.h */
#include "hdw-sniff.h" /* my functions */
+#define MAX_PACKAGES 3
+
int main(int argc, char *argv[]) {
- int i;
+ int i,count;
char pcap_error[PCAP_ERRBUF_SIZE];
pcap_t *pcap_handle;
const u_char *package;
struct pcap_pkthdr pcap_header;
struct ethhdr *e_hdr;
+ struct ip *ip_hdr;
struct ieee802_11_hdr *w_hdr;
/* parse the arguments */
}
/* grab a package until user breaks */
- while (1) {
+ count=0;
+ while (count<MAX_PACKAGES) {
+ count++;
printf("\n");
-
- printf("----| new package |----| hdw - sniff |----\n");
if((package=pcap_next(pcap_handle,&pcap_header))!=NULL) {
- printf("package received at: %s",
- ctime((const time_t*)&pcap_header.ts.tv_sec));
+ printf("---> package %d ---- %s",count,
+ ctime((const time_t*)&pcap_header.ts.tv_sec));
printf("pcap header: ");
printf("capture length=%d ",pcap_header.caplen);
printf("length(off wire)=%d\n",pcap_header.len);
}
- /* 802.11 or 802.3 -- not quite sure about 'D' & '\0' */
- if(*package=='D') {
- printf("ieee802.11: ");
- }
- else if(*package=='\0') {
- printf("ethernet: ");
- /* reading ethernet header */
- e_hdr=(struct ethhdr *)package;
- /* what types ? */
- printf("types = ");
- // for(i=0;i<2;i++)
- printf("%x %x\n",
- /* i==0?"0x":" ", */
- *(e_hdr->h_proto)
- /* i==1?"\n":"" */
- );
- printf("dest_addr = ");
- for(i=0;i<ETH_ALEN;i++)
- printf("%x%s",*(e_hdr->h_dest+i),((i==ETH_ALEN-1)?" ":":"));
- printf(" src_addr = ");
- for(i=0;i<ETH_ALEN;i++)
- printf("%x%s",*(e_hdr->h_source+i),((i==ETH_ALEN-1)?"\n":":"));
- printf("rest:\n");
- for(i=sizeof(struct ethhdr);i<pcap_header.caplen;i++)
- printf("%x ",*(package+i));
- printf("\n");
- }
- else {
- printf("unknown: ");
- /* print the whole package in hex */
- for(i=0;i<=pcap_header.caplen;i++) printf("%x ",*(package+i));
- printf("\n");
- printf("%c <- identifier for unknown!\n",*package);
+ /* is ieee802.11 ? -- we assume yes :) */
+ /* ... */
+
+
+ /* ieee802.3 */
+ /* ethernet */
+ e_hdr=(struct ethhdr *)package;
+ /* what types ? */
+ printf("type = ");
+ printf("%x ",ntohs(e_hdr->h_proto));
+ printf("dest_addr = ");
+ for(i=0;i<ETH_ALEN;i++)
+ printf("%x%s",*(e_hdr->h_dest+i),((i==ETH_ALEN-1)?" ":":"));
+ printf(" src_addr = ");
+ for(i=0;i<ETH_ALEN;i++)
+ printf("%x%s",*(e_hdr->h_source+i),((i==ETH_ALEN-1)?"\n":":"));
+ /* IP ? */
+ if(ntohs(e_hdr->h_proto)==ETH_P_IP) {
+ printf("ip protocol: ");
+ ip_hdr=(struct ip *)(package+sizeof(struct ethhdr));
+ printf("version = %x ",ntohs(ip_hdr->ip_v));
+ printf("header_length = %x \n",ntohs(ip_hdr->ip_hl));
+ printf("service = %x ",ntohs(ip_hdr->ip_tos));
+ printf("total_length(dec.) = %d \n",ntohs(ip_hdr->ip_len));
+ printf("ip_addresses: source = ");
+ printf("%s\tdestination = %s\n",inet_ntoa(ip_hdr->ip_src),
+ inet_ntoa(ip_hdr->ip_dst));
+
+
}
+ printf("all_hex_dump:\n");
+ for(i=sizeof(struct ethhdr);i<pcap_header.caplen;i++)
+ printf("%x ",*(package+i));
+ printf("\n");
}
- printf("just beacon frames, ha? - wake up early! :)");
+ printf("\n");
+ printf("wake up early! :)\n");
+ printf("\n");
}