X-Git-Url: https://hackdaworld.org/gitweb/?a=blobdiff_plain;f=hdw-sniff.c;h=54e40dbc1ac22bfdc6bb8c39a9aab35dcf89d790;hb=6da514c21607236c5dff3a1395088cbfb3b17a0a;hp=8cbfb491e6e7fbda3e4d659a86b9fdd5cb2af645;hpb=8eca22db0981a42d3a9513b397d012a4c450789a;p=my-code%2Fhdw-sniff.git diff --git a/hdw-sniff.c b/hdw-sniff.c index 8cbfb49..54e40db 100644 --- a/hdw-sniff.c +++ b/hdw-sniff.c @@ -31,7 +31,7 @@ int main(int argc, char *argv[]) { char pcap_error[PCAP_ERRBUF_SIZE]; pcap_t *pcap_handle; - int pcap_fd; + int pcap_fd,foo_fd; fd_set pcap_fd_set; struct timeval fd_set_tv; char sys_call[30]; @@ -89,15 +89,27 @@ int main(int argc, char *argv[]) { /* prepare for select */ pcap_fd=pcap_fileno(pcap_handle); - FD_ZERO(&pcap_fd_set); - FD_SET(pcap_fd,&pcap_fd_set); - fd_set_tv.tv_sec=0; - fd_set_tv.tv_usec=500000; + + /* create file descriptor */ + if((foo_fd=socket(AF_INET,SOCK_DGRAM,0))==-1) { + printf("unable to create socket foo_fd\n"); + return -1; + } /* do loopp */ - while(1) { - if((select(pcap_fd+1,&pcap_fd_set,NULL,NULL,&fd_set_tv)) && (FD_ISSET(pcap_fd,&pcap_fd_set))) pcap_loop(pcap_handle,-1,pcap_process,(u_char *)&my_info_struct); - else hop_channel(&my_info_struct,pcap_fd); + while (1) { + + /* set pcap_fd */ + FD_ZERO(&pcap_fd_set); + FD_SET(pcap_fd,&pcap_fd_set); + fd_set_tv.tv_sec=0; + fd_set_tv.tv_usec=500000; + + if((select(pcap_fd+1,&pcap_fd_set,NULL,NULL,&fd_set_tv)) && (FD_ISSET(pcap_fd,&pcap_fd_set))) pcap_dispatch(pcap_handle,-1,pcap_process,(u_char *)&my_info_struct); + else if((hop_channel(&my_info_struct,foo_fd))==-1) { + printf("channelhopping failed, aborting\n"); + return -1; + } } return 0; } @@ -110,8 +122,8 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, /* local variables */ struct linux_wlan_ng_prism_hdr *prism_hdr; struct ieee802_11_hdr *w_hdr; - struct ip *ip_hdr; struct ethhdr *e_hdr; + struct ip *ip_hdr; struct info_struct *my_info_struct; int i; @@ -156,6 +168,7 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, /* ieee802.3 */ /* ethernet */ + printf("ethernet:\n"); e_hdr=(struct ethhdr *)package; /* what types ? */ printf("type = "); @@ -189,21 +202,24 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, printf("\n"); } -int hop_channel(struct info_struct *info,int pcap_fd) { +int hop_channel(struct info_struct *info,int foo_fd) { struct iwreq my_iwreq; - if (info->channel==15) info->channel=1; + if (info->channel>=14) info->channel=1; memset(&my_iwreq,0,sizeof(my_iwreq)); strcpy(my_iwreq.ifr_name,info->dev); + printf("debug: device = %s\n",my_iwreq.ifr_name); + printf("debug: %d\n",foo_fd); + printf("debug: channel = %d\n",info->channel); my_iwreq.u.freq.e=0; my_iwreq.u.freq.m=info->channel; - if((ioctl(pcap_fd,SIOCSIWFREQ,& my_iwreq))==-1) { + if((ioctl(foo_fd,SIOCSIWFREQ,&my_iwreq))==-1) { printf("unable to hop channels\n"); + perror("ioctl"); return -1; } printf("debug: hopped to channel %d\n",info->channel); ++(info->channel); return 0; } -