From 0ba6d6a2e1dd7a79d87a25c289f5dab4b7e8232d Mon Sep 17 00:00:00 2001
From: hackbard <hackbard>
Date: Tue, 19 Nov 2002 00:06:42 +0000
Subject: [PATCH] iv + snap support added -> logfile

---
 hdw-sniff.c | 33 +++++++++++++++++++++++----------
 wep.c       | 19 +++++++++++++++++++
 2 files changed, 42 insertions(+), 10 deletions(-)
 create mode 100644 wep.c

diff --git a/hdw-sniff.c b/hdw-sniff.c
index f17c826..32e1661 100644
--- a/hdw-sniff.c
+++ b/hdw-sniff.c
@@ -52,7 +52,7 @@ int main(int argc, char *argv[]) {
 		printf("no logfile specified, writing to stdout ...\n");
 	} 
 	else {
-		if((file_fd=open(argv[3],O_RDWR))!=0) {
+		if((file_fd=open(argv[3],O_RDWR | O_CREAT))!=0) {
 			printf("writing to logfile %s ...\n",argv[3]);
 		}
 		else {
@@ -124,7 +124,7 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header,
 			const u_char *package) {
 	
 	/* local variables */
-	char tmp_buf[20],crypted_snap[6];
+	char tmp_buf[20],crypted_snap[11];
 	struct linux_wlan_ng_prism_hdr *prism_hdr;
 	struct ieee802_11_hdr *w_hdr;
 	struct snaphdr *snap_hdr;
@@ -233,12 +233,12 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header,
 	} 
 	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) {
+		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 */
@@ -250,12 +250,25 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header,
 			printf("- crypted packet!\n");
 			/* print crypted snap - write into file */
 			printf("snap: (aa aa 03 00 00 00) ");
+			for(i=0;i<4;i++) {
+				printf("%x ",*(snap_hdr->snap-4+i));
+				crypted_snap[i]=*(snap_hdr->snap-4+i);
+				// if(file_fd>0) 
+				//	write(file_fd,snap_hdr->snap+i-4,1);
+			}
+			printf("| ");
 			for(i=0;i<6;i++) {
 				printf("%x ",snap_hdr->snap[i]);
-				if(file_fd>0) write(file_fd,snap_hdr->snap+i,1);
+				crypted_snap[4+i]=snap_hdr->snap[i];
+				// if(file_fd>0) 
+				//	write(file_fd,snap_hdr->snap+i,1);
 			}
 			printf("\n");
-			// write(file_fd,'\n',1);
+			crypted_snap[10]='\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);
 		}
diff --git a/wep.c b/wep.c
new file mode 100644
index 0000000..e2f6799
--- /dev/null
+++ b/wep.c
@@ -0,0 +1,19 @@
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <fcntl.h>
+
+#define MAX_C 20
+
+int main(int argc,char *argv[]) {
+	int file_fd,c,i;
+	char my_buf[MAX_C+1];
+
+	file_fd=open(argv[1],O_RDONLY);
+	if(file_fd>0) 
+		c=read(file_fd,my_buf,MAX_C);
+	for(i=0;i<MAX_C;i++) printf("%x ",my_buf[i]);
+	return 0;
+}
+			
+	
-- 
2.20.1