*/
#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <time.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
#include <pcap.h>
/* IEEE 802.3 stuff -- i will concentrate on .11 stuff before! */
#include <netinet/if_ether.h> /* for ethhdr struct */
#include <netinet/ip.h> /* ip */
-#include <netinet/in.h> /* in_addr */
+#include <netinet/in.h> /* in_addr , inet_ntoa */
/* IEEE 802.11 stuff -- will become one include later ... */
#include "ieee80211.h" /* from hunz's aeolus, short hostap_wlan.h */
pcap_t *pcap_handle;
char sys_call[30];
FILE *logfile;
- int count;
- int *p_count;
+ struct info_struct my_info_struct;
/* parse the arguments */
if(argc<3) {
- printf("usage: %s <interface> <monitor mode> <logfile>\n",argv[0]);
+ printf("usage: %s <interface> <monitor mode> <logfile>\n",
+ argv[0]);
return 0;
}
if(argc!=4) {
}
/* setting up device and set monitor mode */
- if(atoi(argv[2])==1 && (strncmp(argv[1],"wlan",4)==0)) {
- printf("setting to monitor mode 3\n");
- sprintf(sys_call,"iwpriv %s monitor 3",argv[1]);
- system(sys_call);
+ if(atoi(argv[2])==1) {
+ printf("setting to monitor mode\n");
+ if(strncmp(argv[1],"wlan",4)==0)
+ sprintf(sys_call,"iwpriv %s monitor 3",argv[1]);
+ if(strncmp(argv[1],"eth",3)==0)
+ sprintf(sys_call,"ifconfig %s promisc",argv[1]);
+ system(sys_call);
}
printf("setting up interface\n");
sprintf(sys_call,"ifconfig %s up",argv[1]);
}
/* grab a package until user breaks */
- count=0;
- p_count=&count;
- pcap_dispatch(pcap_handle,-1,(pcap_handler)pcap_process,
- (u_char *)&p_count);
+ my_info_struct.count=0;
+ my_info_struct.mmode=argv[2][0];
+ strcpy(my_info_struct.dev,argv[1]);
+ /* do loopp */
+ pcap_loop(pcap_handle,-1,pcap_process,(u_char *)&my_info_struct);
+ return 0;
}
/* pcap_process callback function */
-void pcap_process(u_char *count,const struct pcap_pkthdr *pcap_header,
+void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header,
const u_char *package) {
/* local variables */
struct ethhdr *e_hdr;
struct ip *ip_hdr;
struct ieee802_11_hdr *w_hdr;
+ struct info_struct *my_info_struct;
int i;
- int *p_count;
- p_count=(int *)count;
- ++(*p_count);
+ my_info_struct=(struct info_struct *)info;
+ ++(my_info_struct->count);
printf("\n");
- 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);
+ printf("---> package %d ---- %s",my_info_struct->count,
+ ctime((const time_t*)&(pcap_header->ts.tv_sec)));
+ printf("pcap header:\n");
+ printf("capture_length: %d (dec.)",pcap_header->caplen);
+ printf("length(off wire): %d (dec.)\n",pcap_header->len);
/* is ieee802.11 ? -- we assume yes :) */
- /* ... */
-
+ if((my_info_struct->mmode-0x30==1) &&
+ (strncmp(my_info_struct->dev,"wlan",4)==0)) {
+ printf("ieee802.11 header:\n");
+ w_hdr=(struct ieee802_11_hdr *)package;
+ printf("frame_control: %x duration_id: %x\n",ntohs(w_hdr->frame_ctl),
+ ntohs(w_hdr->duration_id));
+ /* skip ieee802.11 header */
+ package=package+sizeof(struct ieee802_11_hdr);
+ }
/* ieee802.3 */
/* ethernet */
printf("time2live = %x ip_proto = %x\n",ntohs(ip_hdr->ip_ttl),
ntohs(ip_hdr->ip_p));
printf("chksum: %x\n",ntohs(ip_hdr->ip_sum));
-
-
}
printf("all_hex_dump:\n");
for(i=sizeof(struct ethhdr);i<pcap_header->caplen;i++)
printf("%x ",*(package+i));
+ printf("\n");
}