X-Git-Url: https://hackdaworld.org/gitweb/?a=blobdiff_plain;f=hdw-sniff.c;h=f17c8260a29ff82f3d71abc76c2e6b5e4a6c5db8;hb=a5fd7ba7bab79996ed50a5c1d939272436446876;hp=18148572ec9f867e6f51a896761807fe7adcf9a0;hpb=9ad5fae0187dba865b7f823e4a6453ee5fa1740c;p=my-code%2Fhdw-sniff.git diff --git a/hdw-sniff.c b/hdw-sniff.c index 1814857..f17c826 100644 --- a/hdw-sniff.c +++ b/hdw-sniff.c @@ -13,6 +13,8 @@ #include #include #include +#include +#include #include #include @@ -27,6 +29,9 @@ #include "hdw-sniff.h" /* my functions */ +/* global variables */ +int file_fd=0; + int main(int argc, char *argv[]) { char pcap_error[PCAP_ERRBUF_SIZE]; @@ -35,7 +40,6 @@ int main(int argc, char *argv[]) { fd_set pcap_fd_set; struct timeval fd_set_tv; char sys_call[30]; - FILE *logfile; struct info_struct my_info_struct; /* parse the arguments */ @@ -48,7 +52,7 @@ int main(int argc, char *argv[]) { printf("no logfile specified, writing to stdout ...\n"); } else { - if((logfile=fopen(argv[3],"w"))!=NULL) { + if((file_fd=open(argv[3],O_RDWR))!=0) { printf("writing to logfile %s ...\n",argv[3]); } else { @@ -120,9 +124,10 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, const u_char *package) { /* local variables */ - char tmp_buf[20]; + char tmp_buf[20],crypted_snap[6]; struct linux_wlan_ng_prism_hdr *prism_hdr; struct ieee802_11_hdr *w_hdr; + struct snaphdr *snap_hdr; struct ethhdr *e_hdr; struct iphdr *ip_hdr; struct info_struct *my_info_struct; @@ -167,29 +172,33 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, (i==15?"|\n":"|")); printf(" | v | t | s-t |t|f|m|r|p|m|w|o|\n"); /* frame type */ - if((w_hdr->frame_ctl & IEEE802_11_STYPE_BEACON)>0) - strcpy(tmp_buf,"beacon"); - if((w_hdr->frame_ctl & IEEE802_11_STYPE_ATIM)>0) - strcpy(tmp_buf,"announcement traffic indication message"); - if((w_hdr->frame_ctl & IEEE802_11_STYPE_DISASSOC)>0) - strcpy(tmp_buf,"disassociation"); - if((w_hdr->frame_ctl & IEEE802_11_STYPE_AUTH)>0) - strcpy(tmp_buf,"authentification"); - if((w_hdr->frame_ctl & IEEE802_11_STYPE_DEAUTH)>0) - strcpy(tmp_buf,"deauthentification"); + /* management */ + if(!(w_hdr->frame_ctl & 0x0c)) { if((w_hdr->frame_ctl & IEEE802_11_STYPE_ASSOC_REQ)>0) strcpy(tmp_buf,"association request"); - if((w_hdr->frame_ctl & IEEE802_11_STYPE_ASSOC_RESP)>0) + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_ASSOC_RESP)>0) strcpy(tmp_buf,"association response"); - if((w_hdr->frame_ctl & IEEE802_11_STYPE_REASSOC_REQ)>0) + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_REASSOC_REQ)>0) strcpy(tmp_buf,"reassociation request"); - if((w_hdr->frame_ctl & IEEE802_11_STYPE_REASSOC_RESP)>0) + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_REASSOC_RESP)>0) strcpy(tmp_buf,"reassociation response"); - if((w_hdr->frame_ctl & IEEE802_11_STYPE_PROBE_REQ)>0) + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_PROBE_REQ)>0) strcpy(tmp_buf,"probe request"); - if((w_hdr->frame_ctl & IEEE802_11_STYPE_PROBE_RESP)>0) + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_PROBE_RESP)>0) strcpy(tmp_buf,"probe response"); - else strcpy(tmp_buf,"unknown"); + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_BEACON)>0) + strcpy(tmp_buf,"beacon"); + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_ATIM)>0) + strcpy(tmp_buf,"announcement traffic indication message"); + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_DISASSOC)>0) + strcpy(tmp_buf,"disassociation"); + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_AUTH)>0) + strcpy(tmp_buf,"authentification"); + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_DEAUTH)>0) + strcpy(tmp_buf,"deauthentification"); + else strcpy(tmp_buf,"impossible situation \%) - go mail the author."); + } + else strcpy(tmp_buf,"control & data frame type not supported yet"); /* print out frame type */ printf("=> %s\n",tmp_buf); @@ -200,20 +209,57 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, } /* ieee802.3 */ + /* we need smaller w_hdr for non distributed frames */ + if((w_hdr->frame_ctl & (1<<8)) & (w_hdr->frame_ctl & (1<<9))) { + printf("=> distributed packet !!!!11\n"); + } else w_o-=(sizeof(struct snaphdr)-sizeof(unsigned short)); + /* ethernet */ if((strncmp(my_info_struct->dev,"eth",3)==0) | ((w_hdr->frame_ctl & IEEE802_11_FTYPE_DATA)>0)) { - printf("ethernet: (%d bytes)\n",e_o); - e_hdr=(struct ethhdr *)(package+p_o+w_o); - /* what types ? */ - printf("type = "); - printf("%x ",ntohs(e_hdr->h_proto)); - printf("dest_addr = "); - for(i=0;ih_dest+i),((i==ETH_ALEN-1)?" ":":")); - printf(" src_addr = "); - for(i=0;ih_source+i),((i==ETH_ALEN-1)?"\n":":")); + + if(!(w_hdr->frame_ctl & IEEE802_11_FTYPE_DATA)) { + printf("ethernet: (%d bytes)\n",e_o); + e_hdr=(struct ethhdr *)(package+p_o+w_o); + /* what types ? */ + printf("type = "); + printf("%x ",ntohs(e_hdr->h_proto)); + printf("dest_addr = "); + for(i=0;ih_dest+i),((i==ETH_ALEN-1)?" ":":")); + printf(" src_addr = "); + for(i=0;ih_source+i), + ((i==ETH_ALEN-1)?"\n":":")); + } + else { + 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<6;i++) { + printf("%x ",snap_hdr->snap[i]); + if(file_fd>0) write(file_fd,snap_hdr->snap+i,1); + } + printf("\n"); + // write(file_fd,'\n',1); + /* dont look at ipheader */ + e_hdr->h_proto=htons(0); + } + } /* IP ? */ if(ntohs(e_hdr->h_proto)==ETH_P_IP) { @@ -224,16 +270,16 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, printf("service = %x ",ntohs(ip_hdr->tos)); printf("total_length(dec.) = %d \n",ntohs(ip_hdr->tot_len)); printf("source_ip: "); - for(i=3;i>=0;--i) { + for(i=0;i<=3;++i) { printf("%d%s", - ip_hdr->saddr&0xff<saddr&(0xff<<(8*i)))>>(8*i), + (i==3?"\n":".")); } printf("destination_ip: "); - for(i=3;i>=0;--i) { + for(i=0;i<=3;++i) { printf("%d%s", - ip_hdr->daddr&0xff<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));