/*
* main.c - main hdw-sniff
*
- * author: hackbard@hackdaworld.dyndns.org
+ * Copyright (C) 2004 hackbard@hackdaworld.dyndns.org
*
*/
-#include <stdio.h>
#include "main.h"
+void parse_package(unsigned char *ptr,const struct pcap_pkthdr *pcap_header,const unsigned char *package);
+
/* functions */
-int usage(void)
-{
- puts("usage: hdw-sniff <options>");
- puts("\toptions:\t-m <mode> \t1 monitoring, 2 managed");
- puts("\t\t-d <device> \twlan0,eth0");
- puts("\t\t-l <logfile>");
- puts("\t\t-h \tdisplay this help message");
- return -23;
+
+int get_user_event(t_info *info) {
+ char event;
+ if(read(0,&event,1)!=1) {
+ perror("reading user interaction failed");
+ return -23;
+ }
+ printf("user event: %c ",event);
+ if(event=='h') {
+ info->mode^=MODE_HEXOUT;
+ printf("- hex output: %c\n",info->mode&MODE_HEXOUT?'a':'n');
+ }
+ if(event=='a') {
+ info->mode^=MODE_ASCIIOUT;
+ printf("- ascii output: %c\n",info->mode&MODE_ASCIIOUT?'a':'n');
+ }
+ if(event=='q') {
+ info->mode|=MODE_QUIT;
+ printf("- shutting down!\n");
+ }
+
+ return 23;
}
-int hop_channel(info_struct *info)
-{
- struct iwreq iwreq;
- if(info->current_channel>=CHANNEL_MAX) info->current_channel=1;
- memset(&iwreq,0,sizeof(iwreq));
- strcpy(iwreq.ifr_name,info->device);
- iwreq.u.freq.e=0;
- iwreq.u.freq.m=info->current_channel;
- if(ioctl(info->channel_hop_fd,SIOCSIWFREQ,&iwreq)<0)
- {
- puts("unable to hop channel");
- perror("ioctl");
- return -23;
- }
- ++(info->current_channel);
- return 23;
+int usage(void) {
+ puts("usage: hdw-sniff <options>");
+ puts("\toptions:");
+ puts("\t\t-m <mode> \tmonitor and/or wlanng");
+ puts("\t\t-d <device> \twlan0,eth0");
+ puts("\t\t-l <logfile>");
+ puts("\t\t-k <key> \t(string)");
+ puts("\t\t-h \tdisplay this help message");
+ puts("");
}
-int main(int argc, char **argv)
-{
- /* local variables */
- char pcap_error[PCAP_ERRBUF_SIZE];
- char sys_call[SYSCALL_MAX];
+int hop_channel(t_info *info) {
- int pcap_fd,channel_hop_fd;;
- int i;
+ struct iwreq iwreq;
- fd_set pcap_fd_set;
- struct timeval pcap_fd_set_tv;
+ if(info->current_channel>=CHANNEL_MAX) info->current_channel=1;
+ memset(&iwreq,0,sizeof(iwreq));
+ strcpy(iwreq.ifr_name,info->device);
+ iwreq.u.freq.e=0;
+ iwreq.u.freq.m=info->current_channel;
+ if(ioctl(info->channel_hop_fd,SIOCSIWFREQ,&iwreq)<0) {
+ puts("unable to hop channel");
+ perror("ioctl");
+ return -23;
+ }
+ ++(info->current_channel);
+ return 23;
+}
- struct info_struct info;
+int main(int argc, char **argv) {
+ t_info info;
+ int pcap_fd;
+ fd_set fds;
+ struct timeval hop_f;
+ int i;
+ char sys_call[MAX_SYSCALL_CHARS];
+ char pcap_error[PCAP_ERRBUF_SIZE];
- memset(&info,0,sizeof(struct info_struct));
- /* default values */
- info.caps=0;
- info.logfile_fd=0;
- info.quit=0;
+ memset(&info,0,sizeof(t_info));
/* parse arguments */
for(i=1;i<argc;i++)
case 'h':
usage();
case 'm':
- info.caps=((1<<atoi(argv[i+1]))&CAP_MODE_MASK)|info.caps;
+ if(!strncmp(argv[i+1],"monitor",7)) {
+ info.mode|=MODE_MONITOR;
+ puts("will go to monitor mode.");
+ }
+ else if(!strncmp(argv[i+1],"wlanng",6)) {
+ info.mode|=MODE_WLANNG;
+ puts("expecting wlanng header in package.");
+ }
+ else {
+ printf("unknown mode: %s\n",argv[1]);
+ return -23;
+ }
++i;
break;
case 'l':
strncpy(info.device,argv[i+1],MAX_DEV_CHARS);
++i;
break;
+ default:
+ usage();
+ return -23;
}
- } else usage();
+ } else {
+ usage();
+ return -23;
+ }
}
/* setting up device */
- if((info.caps&CAP_MODE_MASK)==MONITORING_MODE)
- {
- sprintf(sys_call,"iwpriv %s monitor %d",info.device,IWPRIV_M_MODE);
- system(sys_call);
+ if(info.mode&MODE_MONITOR) {
+ sprintf(sys_call,"iwconfig %s mode monitor",info.device);
puts("set monitoring mode ...");
+ system(sys_call);
}
sprintf(sys_call,"ifconfig %s up",info.device);
+ puts("setting up device ...");
system(sys_call);
- puts("device up ...");
/* pcap */
if((info.pcap_handle=pcap_open_live(info.device,BUFSIZ,1,-1,pcap_error))==NULL)
printf("%s: %s\n",argv[0],pcap_error);
return -23;
}
- pcap_fd=pcap_fileno(pcap_handle);
+ pcap_fd=pcap_fileno(info.pcap_handle);
/* -> non blocking? */
- info.channel_hop_fd=socket(AF_INET,SOCK_DGRAM,0);
/* socket fd for channel hopping */
-
- /* watch pcap_fd for reading */
- FD_ZERO(&pcap_fd);
- FD_SET(pcap_fd,&pcap_fd_set);
- fd_set_tv.tv_sec=PCAP_SELECT_SEC;
- pcap_fd_set_tv.tv_usec=PCAP_SELECT_USEC;
+ info.channel_hop_fd=socket(AF_INET,SOCK_DGRAM,0);
/* parse packages until user breaks */
- while(!(info.caps&CAP_QUIT_MASK))
+ while(!(info.mode&MODE_QUIT))
{
- if(select(pcap_fd+1,&pcap_fd_set,NULL,NULL,&pcap_fd_set_tv))
- pcap_dispatch(pcap_handle,-1,parse_package,(unsigned char *)&info);
- else
- hop_channel(&info);
+ /* watch pcap_fd and stdin (reading) */
+ FD_ZERO(&fds);
+ FD_SET(pcap_fd,&fds);
+ FD_SET(0,&fds);
+ hop_f.tv_sec=HOP_SEC;
+ hop_f.tv_usec=HOP_USEC;
+
+ if(select(pcap_fd+1,&fds,NULL,NULL,&hop_f)) {
+ if(FD_ISSET(0,&fds))
+ get_user_event(&info);
+ else if(FD_ISSET(pcap_fd,&fds))
+ pcap_dispatch(info.pcap_handle,-1,parse_package,(unsigned char *)&info);
+ else
+ hop_channel(&info);
+ }
}
+ puts("");
+ puts("");
+ puts("thanks for using hdw-sniff (C) 2005 hackbard");
+ puts("");
puts("bugreports: hackbard@hackdaworld.dyndns.org");
+
return 23;
+
}
projects / my-code / hdw-sniff.git / blobdiff