From: hackbard Date: Mon, 2 Dec 2002 23:35:24 +0000 (+0000) Subject: added list support X-Git-Url: https://hackdaworld.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=551ef6ebd6cfbf7caf60dd132953fad4b687f107;p=my-code%2Fhdw-sniff.git added list support --- diff --git a/Makefile b/Makefile index 8a234aa..fb4a778 100644 --- a/Makefile +++ b/Makefile @@ -9,5 +9,6 @@ TARGETS = hdw-sniff all: $(TARGETS) hdw-sniff: - $(CC) $(CFLAGS) -Wall hdw-sniff.c $(LDFLAGS) -o hdw-sniff + $(CC) $(CFLAGS) -Wall list.c hdw-sniff.c $(LDFLAGS) -o hdw-sniff +# $(CC) $(CFLAGS) -Wall hdw-sniff.c $(LDFLAGS) -o hdw-sniff diff --git a/hdw-sniff.c b/hdw-sniff.c index 08f6998..0c73bc9 100644 --- a/hdw-sniff.c +++ b/hdw-sniff.c @@ -86,9 +86,12 @@ int main(int argc, char *argv[]) { return 1; } - /* grab a package until user breaks */ + /* set info struct */ my_info_struct.count=0; my_info_struct.mmode=argv[2][0]; + my_info_struct.ssid_list=(struct list *)malloc(sizeof(struct list)); + my_info_struct.ssid_list->next=NULL; + // strcpy(my_info_struct.ssid_list->ssid,"test"); strcpy(my_info_struct.dev,argv[1]); /* prepare for select */ @@ -124,7 +127,7 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, const u_char *package) { /* local variables */ - char tmp_buf[20],crypted_snap[11]; + char tmp_buf[20],crypted_snap[12],tmp_buf1[10],tmp_buf2[32]; struct linux_wlan_ng_prism_hdr *prism_hdr; struct ieee802_11_hdr *w_hdr; struct snaphdr *snap_hdr; @@ -155,7 +158,7 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, /* wireless stuff */ /* prism wlan ng headers */ - if((my_info_struct->mmode-0x30==1) && + if((my_info_struct->mmode-0x30==1) & (strncmp(my_info_struct->dev,"wlan",4)==0)) { printf("prism header: (%d bytes)\n",p_o); prism_hdr=(struct linux_wlan_ng_prism_hdr *)package; @@ -194,10 +197,14 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, else if((w_hdr->frame_ctl & IEEE802_11_STYPE_PROBE_RESP)>0) strcpy(tmp_buf,"probe response"); else if((w_hdr->frame_ctl & IEEE802_11_STYPE_BEACON)==IEEE802_11_STYPE_BEACON) { - // beacon_hdr=(struct beacon_struct *)(package+p_o+w_o); - // printf("ssid: "); - // for(i=0;i<(((beacon_hdr->ssid)&0x2)>> - // strcpy(tmp_buf,"beacon"); + beacon_hdr=(struct beacon_struct *)(package+p_o+w_o); + beacon_hdr->ssid_s.elementid==0?strcpy(tmp_buf1,"essid = ") + :strcpy(tmp_buf1,"ibssid = "); + strncpy(tmp_buf2,beacon_hdr->ssid_s.ssid, + beacon_hdr->ssid_s.length); + tmp_buf2[beacon_hdr->ssid_s.length]='\0'; + strcpy(tmp_buf,"beacon"); + add_ssid_2_list(tmp_buf2,my_info_struct->ssid_list); } else if((w_hdr->frame_ctl & IEEE802_11_STYPE_ATIM)>0) strcpy(tmp_buf,"announcement traffic indication message"); @@ -212,7 +219,7 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, else strcpy(tmp_buf,"control & data frame type not supported yet"); /* print out frame type */ printf("=> %s\n",tmp_buf); - + printf(" %s%s\n",tmp_buf1,tmp_buf2); printf("duration/id: 0x%x\n",w_hdr->duration_id); printf("version check ... %s\n", ((w_hdr->frame_ctl & IEEE802_11_FCTL_VERS)==0x00)? @@ -221,7 +228,7 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, /* ethernet */ if((strncmp(my_info_struct->dev,"eth",3)==0) | - ((w_hdr->frame_ctl & IEEE802_11_FTYPE_DATA)>0)) { + ((w_hdr->frame_ctl & IEEE802_11_FTYPE_DATA)==IEEE802_11_FTYPE_DATA)) { if(!(w_hdr->frame_ctl & IEEE802_11_FTYPE_DATA)) { printf("ethernet: (%d bytes)\n",e_o); @@ -246,34 +253,38 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, (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: (iv + crypted aa aa 03 00 00 00) "); + printf("snap: (iv(3) + index(1) + crypted snap(6)) "); for(i=0;i<10;i++) { printf("%x ",*(snap_hdr->snap+i)); crypted_snap[i]=*(snap_hdr->snap+i); - // if(file_fd>0) - // write(file_fd,snap_hdr->snap+i-4,1); } + /* + crypted_snap[4]^=0xaa; + crypted_snap[5]^=0xaa; + crypted_snap[6]^=0x03; + crypted_snap[7]^=0x00; + crypted_snap[8]^=0x00; + crypted_snap[9]^=0x00; + */ + printf("\n"); - crypted_snap[10]='\n'; + crypted_snap[10]='\0'; + crypted_snap[11]='\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) { + /* IP ? */ + if((ntohs(e_hdr->h_proto)==ETH_P_IP) | (ntohs(snap_hdr->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)); @@ -305,10 +316,12 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, for(i=p_o+w_o;icaplen;i++) printf("%x ",*(package+i)); printf("\n"); +#ifdef DEBUG_CHAR printf("all dump: (char)\n"); for(i=p_o+w_o;icaplen;i++) printf("%c ",*(package+i)); printf("\n"); +#endif } int hop_channel(struct info_struct *info,int foo_fd) { @@ -320,7 +333,6 @@ int hop_channel(struct info_struct *info,int foo_fd) { 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) { diff --git a/hdw-sniff.h b/hdw-sniff.h index 76eee82..38b2db9 100644 --- a/hdw-sniff.h +++ b/hdw-sniff.h @@ -1,4 +1,5 @@ #include +#include "list.h" #define C_MAX 14 @@ -18,16 +19,31 @@ struct info_struct { char dev[10]; /* device */ char mmode; /* monitor type ... and later more */ int channel; /* current freq channel */ + struct list *ssid_list; /* pointer to ssid list */ }; /* hop_chanel function */ int hop_channel(struct info_struct *info,int foo_fd); +/* ssid struct */ +struct ssid_struct { + unsigned char elementid; /* element id */ + unsigned char length; /* length of ssid */ + unsigned char ssid[32]; /* ssid */ +} __attribute__ ((packed)); + /* beacon header */ struct beacon_struct { - long int timestamp; /* time stamp */ + long long timestamp; /* time stamp */ unsigned short interval; /* beacon interval field */ unsigned short capability; /* capability field */ - unsigned char ssid; /* ssid field */ + struct ssid_struct ssid_s; /* ssid field */ } __attribute__ ((packed)); +/* association request header */ +struct asso_req_struct { + unsigned short capability; /* capability field */ + unsigned short listeninterval; /* listen interval field */ + unsigned short ssid; /* ssid field */ + /* supported rates missing */ +} __attribute__ ((packed)); diff --git a/list.c b/list.c new file mode 100644 index 0000000..03fec7c --- /dev/null +++ b/list.c @@ -0,0 +1,33 @@ +/* manage sniffed stuff in linked lists + * + * author: hackbard@hackdaworld.dyndns.org + * + */ + +#include "list.h" +#include +#include +#include + + +char sys_call[20]; + +int add_ssid_2_list(char *ssid, struct list *my_list) { + + struct list *new_entry; + + if(my_list->next==NULL) { + // printf("debug: new ssid found!\n"); + sprintf(sys_call,"flite \"new ssid. %s\"",ssid); + system(sys_call); + new_entry=(struct list *)malloc(sizeof(struct list)); + my_list->next=new_entry; + strcpy(my_list->ssid,ssid); + new_entry->next=NULL; + } else if(!strcmp(my_list->ssid,ssid)) { + /* do nothing! */ + } else { + add_ssid_2_list(ssid,my_list->next); + } + return 1; +} diff --git a/list.h b/list.h new file mode 100644 index 0000000..b554914 --- /dev/null +++ b/list.h @@ -0,0 +1,13 @@ +/* + * list header file + * + */ + +/* data structures */ +struct list { + char ssid[32]; /* ssid */ + struct list *next; /* pointer to next list */ +}; + +/* prototypes */ +int add_ssid_2_list(char *ssid, struct list *my_list);