downgraded for demo :p

[my-code/hdw-sniff.git] / hdw-sniff.c

diff --git a/hdw-sniff.c b/hdw-sniff.c
index 8f11c82..48e7bdc 100644 (file)
--- a/hdw-sniff.c
+++ b/hdw-sniff.c
@@ -9,6 +9,8 @@
 
 /* IEEE 802.3 stuff -- i will concentrate on .11 stuff before! */
 #include <netinet/if_ether.h>
+#include <netinet/ip.h> /* ip */
+#include <netinet/in.h>        /* in_addr */
 
 /* IEEE 802.11 stuff -- will become one include later ... */
 #include "ieee80211.h" /* from hunz's aeolus, short hostap_wlan.h */
@@ -26,6 +28,7 @@ int main(int argc, char *argv[]) {
        const u_char *package;
        struct pcap_pkthdr pcap_header;
        struct ethhdr *e_hdr;
+       struct ip *ip_hdr;
        struct ieee802_11_hdr *w_hdr;
        
        /* parse the arguments */
@@ -71,9 +74,21 @@ int main(int argc, char *argv[]) {
        printf(" src_addr = ");
        for(i=0;i<ETH_ALEN;i++)
        printf("%x%s",*(e_hdr->h_source+i),((i==ETH_ALEN-1)?"\n":":"));
+               /* IP ? */
        if(ntohs(e_hdr->h_proto)==ETH_P_IP) {
                printf("ip protocol: ");
-               // printf("
+               ip_hdr=(struct ip *)(package+sizeof(struct ethhdr));
+               printf("version = %x ",ntohs(ip_hdr->ip_v));
+               printf("header_length = %x \n",ntohs(ip_hdr->ip_hl));
+               // i=0;
+               //printf("service = %x ",*(ip_hdr->ip_tos));
+               //printf("total_length(dec.) = %hu \n",*(ip_hdr->ip_len));
+               //printf("ip_addresses: source = ");
+               //for(i=0;i<4;i++)
+               //      printf("%x%s",*(ip_hdr->ip_src+i),
+               //                      (i==3?"\n":"."));
+               
+               
        }
        printf("rest:\n");
        for(i=sizeof(struct ethhdr);i<pcap_header.caplen;i++)
@@ -81,6 +96,6 @@ int main(int argc, char *argv[]) {
        printf("\n");
        }
        printf("\n");
-       printf("just beacon frames, ha? - wake up early! :)\n");
+       printf("wake up early! :)\n");
        printf("\n");
 }