+ snap_hdr=(struct snaphdr *)(package+p_o+w_o);
+ if((snap_hdr->snap[0]==0xaa) &
+ (snap_hdr->snap[1]==0xaa) &
+ (snap_hdr->snap[2]==0x03) &
+ (snap_hdr->snap[3]==0x00) &
+ (snap_hdr->snap[4]==0x00) &
+ (snap_hdr->snap[5]==0x00)) {
+ printf("- no encryption!\n");
+ if(snap_hdr->proto==ntohs(ETH_P_IP)) {
+ /* we want ip header to get parsed */
+ e_hdr->h_proto=htons(ETH_P_IP);
+ e_o=sizeof(struct snaphdr);
+ }
+ }
+ else {
+ printf("- crypted packet!\n");
+ /* print crypted snap - write into file */
+ printf("snap: (aa aa 03 00 00 00) ");
+ for(i=0;i<4;i++) {
+ printf("%x ",*(snap_hdr->snap-4+i));
+ crypted_snap[i]=*(snap_hdr->snap-4+i);
+ // if(file_fd>0)
+ // write(file_fd,snap_hdr->snap+i-4,1);
+ }
+ printf("| ");
+ for(i=0;i<6;i++) {
+ printf("%x ",snap_hdr->snap[i]);
+ crypted_snap[4+i]=snap_hdr->snap[i];
+ // if(file_fd>0)
+ // write(file_fd,snap_hdr->snap+i,1);
+ }
+ printf("\n");
+ crypted_snap[10]='\n';
+ if(file_fd>0) {
+ printf("debug: saved to file\n");
+ write(file_fd,crypted_snap,11);
+ }
+ /* dont look at ipheader */
+ e_hdr->h_proto=htons(0);
+ }
+ }
+
+ /* IP ? */
+ if(ntohs(e_hdr->h_proto)==ETH_P_IP) {
+ printf("ip protocol: (%d bytes)\n",i_o);
+ ip_hdr=(struct iphdr *)(package+p_o+w_o+e_o);
+ printf("version = %x ",ntohs(ip_hdr->version));
+ printf("header_length = %x \n",ntohs(ip_hdr->ihl));
+ printf("service = %x ",ntohs(ip_hdr->tos));
+ printf("total_length(dec.) = %d \n",ntohs(ip_hdr->tot_len));
+ printf("source_ip: ");
+ for(i=0;i<=3;++i) {
+ printf("%d%s",
+ (ip_hdr->saddr&(0xff<<(8*i)))>>(8*i),
+ (i==3?"\n":"."));
+ }
+ printf("destination_ip: ");
+ for(i=0;i<=3;++i) {
+ printf("%d%s",
+ (ip_hdr->daddr&(0xff<<(8*i)))>>(8*i),
+ (i==3?"\n":"."));
+ }
+ printf("ip_id = %x ",ntohs(ip_hdr->id));
+ printf("ip_offset = %x \n",ntohs(ip_hdr->frag_off));
+ printf("time2live = %x ip_proto = %x\n",ntohs(ip_hdr->ttl),
+ ntohs(ip_hdr->protocol));
+ // printf("chksum: %x\n",ntohs(ip_hdr->ip_sum));
+ }
+ }
+
+ /* check what we have ... */
+ printf("all dump: (hex)\n");
+ for(i=p_o+w_o;i<pcap_header->caplen;i++)
+ printf("%x ",*(package+i));
+ printf("\n");
+ printf("all dump: (char)\n");
+ for(i=p_o+w_o;i<pcap_header->caplen;i++)
+ printf("%c ",*(package+i));
+ printf("\n");
+}
+
+int hop_channel(struct info_struct *info,int foo_fd) {
+ if((info->mmode-0x30==1) && (strncmp(info->dev,"wlan",4)==0)) {
+
+ struct iwreq my_iwreq;
+
+ if (info->channel>=14) info->channel=1;
+
+ memset(&my_iwreq,0,sizeof(my_iwreq));
+ strcpy(my_iwreq.ifr_name,info->dev);
+ printf("debug: channel = %d\n",info->channel);
+ my_iwreq.u.freq.e=0;
+ my_iwreq.u.freq.m=info->channel;
+ if((ioctl(foo_fd,SIOCSIWFREQ,&my_iwreq))==-1) {
+ printf("unable to hop channels\n");
+ perror("ioctl");
+ return -1;