introduced beacon header

diff --git a/hdw-sniff.c b/hdw-sniff.c
index 0259730..08f6998 100644 (file)
--- a/hdw-sniff.c
+++ b/hdw-sniff.c
@@ -128,6 +128,7 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header,
        struct linux_wlan_ng_prism_hdr *prism_hdr;
        struct ieee802_11_hdr *w_hdr;
        struct snaphdr *snap_hdr;
+       struct beacon_struct *beacon_hdr;
        struct ethhdr *e_hdr;
        struct iphdr *ip_hdr;
        struct info_struct *my_info_struct;
@@ -162,6 +163,12 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header,
                                                prism_hdr->msglen);
        printf("device: %s |\n",prism_hdr->devname);
        /* ieee802.11 header */
+
+       /* 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));
+
        printf("ieee802.11 header: (%d bytes)\n",w_o);
        w_hdr=(struct ieee802_11_hdr *)(package+p_o);
        
@@ -186,8 +193,12 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header,
                strcpy(tmp_buf,"probe request");
        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)>0)
-               strcpy(tmp_buf,"beacon");
+       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");
+       }
        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)
@@ -208,12 +219,6 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header,
                                                        "ok":"unknown");
        }
 
-       /* 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)) {
@@ -311,7 +316,7 @@ int hop_channel(struct info_struct *info,int foo_fd) {
 
        struct iwreq my_iwreq;
 
-       if (info->channel>=14) info->channel=1;
+       if (info->channel>=C_MAX) info->channel=1;
 
        memset(&my_iwreq,0,sizeof(my_iwreq));
        strcpy(my_iwreq.ifr_name,info->dev);

diff --git a/hdw-sniff.h b/hdw-sniff.h
index 6dc06b9..76eee82 100644 (file)
--- a/hdw-sniff.h
+++ b/hdw-sniff.h
@@ -1,5 +1,7 @@
 #include <linux/wireless.h>
 
+#define C_MAX 14
+
 /* the pcap_process callback function */
 void pcap_process(u_char *count,const struct pcap_pkthdr *pcap_header,
                        const u_char *package);
@@ -21,3 +23,11 @@ struct info_struct {
 /* hop_chanel function */
 int hop_channel(struct info_struct *info,int foo_fd);
 
+/* beacon header */
+struct beacon_struct {
+               long int timestamp;             /* time stamp */
+               unsigned short interval;        /* beacon interval field */
+               unsigned short capability;      /* capability field */
+               unsigned char ssid;             /* ssid field */
+} __attribute__ ((packed));
+

diff --git a/wep.c b/wep.c
index e2f6799..886ac37 100644 (file)
--- a/wep.c
+++ b/wep.c
@@ -1,3 +1,9 @@
+/*
+ *
+ * wep.c - bruteforce wep key
+ *
+ */
+
 #include <stdio.h>
 #include <sys/stat.h>
 #include <sys/types.h>