From: hackbard <hackbard>
Date: Wed, 4 Dec 2002 22:47:32 +0000 (+0000)
Subject: clean file write now
X-Git-Url: https://hackdaworld.org/gitweb/?p=my-code%2Fhdw-sniff.git;a=commitdiff_plain;h=2d887777866454a450211bd1373b0f716abb9fb4

clean file write now
---

diff --git a/hdw-sniff.c b/hdw-sniff.c
index 0c73bc9..7a549e5 100644
--- a/hdw-sniff.c
+++ b/hdw-sniff.c
@@ -127,13 +127,13 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header,
 			const u_char *package) {
 	
 	/* local variables */
-	char tmp_buf[20],crypted_snap[12],tmp_buf1[10],tmp_buf2[32];
+	char tmp_buf[20],tmp_buf1[10],tmp_buf2[32];
+	unsigned char crypted_snap[12];
 	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;
 	int i,p_o,w_o,e_o,i_o;
 	
@@ -230,7 +230,7 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header,
 	if((strncmp(my_info_struct->dev,"eth",3)==0) | 
 	((w_hdr->frame_ctl & IEEE802_11_FTYPE_DATA)==IEEE802_11_FTYPE_DATA)) {
 
-	if(!(w_hdr->frame_ctl & IEEE802_11_FTYPE_DATA)) {
+	if((strncmp(my_info_struct->dev,"eth",3)==0)) {
 		printf("ethernet: (%d bytes)\n",e_o);
 		e_hdr=(struct ethhdr *)(package+p_o+w_o);
 		/* what types ? */
@@ -242,6 +242,8 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header,
 		printf(" src_addr = ");
 		for(i=0;i<ETH_ALEN;i++) printf("%x%s",*(e_hdr->h_source+i),
 						((i==ETH_ALEN-1)?"\n":":"));
+		if((ntohs(e_hdr->h_proto)==ETH_P_IP))
+					parse_ip(package+p_o+w_o+e_o);
 	} 
 	else {
 		snap_hdr=(struct snaphdr *)(package+p_o+w_o);
@@ -254,7 +256,9 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header,
 			printf("- no encryption!\n");
 			if(snap_hdr->proto==ntohs(ETH_P_IP)) {
 				e_o=sizeof(struct snaphdr);
+				parse_ip(snap_hdr+e_o);
 			}
+
 		}
 		else {
 			printf("- crypted packet!\n");
@@ -264,7 +268,7 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header,
 				printf("%x ",*(snap_hdr->snap+i));
 				crypted_snap[i]=*(snap_hdr->snap+i);
 			}
-			/*
+			/* xor with plain
 			crypted_snap[4]^=0xaa;
 			crypted_snap[5]^=0xaa;
 			crypted_snap[6]^=0x03;
@@ -276,46 +280,22 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header,
 			printf("\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);
+				dprintf(file_fd,IVLINE,IVL_ARGS);
 			}
 		}
 	}
-
-	/* 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));
-		printf("header_length = %x \n",ntohs(ip_hdr->ihl));
-		printf("service = %x ",ntohs(ip_hdr->tos));
-		printf("total_length(dec.) = %d \n",ntohs(ip_hdr->tot_len));
-		printf("source_ip: ");
-		for(i=0;i<=3;++i) {
-			printf("%d%s",
-			(ip_hdr->saddr&(0xff<<(8*i)))>>(8*i),
-			(i==3?"\n":"."));
-		}
-		printf("destination_ip: ");
-		for(i=0;i<=3;++i) {
-			printf("%d%s",
-			(ip_hdr->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));
-		printf("time2live = %x ip_proto = %x\n",ntohs(ip_hdr->ttl),
-						ntohs(ip_hdr->protocol));
-		// printf("chksum: %x\n",ntohs(ip_hdr->ip_sum));
-	}
 	}
 
-	/* check what we have ... */
+	/* dump it */
+#ifdef SHOW_HEX
 	printf("all dump: (hex)\n");
 	for(i=p_o+w_o;i<pcap_header->caplen;i++)
 		printf("%x ",*(package+i));
 	printf("\n");
+#endif
 #ifdef DEBUG_CHAR
 	printf("all dump: (char)\n");
 	for(i=p_o+w_o;i<pcap_header->caplen;i++)
@@ -344,3 +324,32 @@ int hop_channel(struct info_struct *info,int foo_fd) {
 	}
 	return 0;
 }
+
+int parse_ip(char *ip_o) {
+	struct iphdr *ip_hdr;
+	int i;
+
+	printf("ip protocol:\n");
+	ip_hdr=(struct iphdr *)ip_o;
+	printf("version = %x ",ntohs(ip_hdr->version));
+        printf("header_length = %x \n",ntohs(ip_hdr->ihl));
+        printf("service = %x ",ntohs(ip_hdr->tos));
+        printf("total_length(dec.) = %d \n",ntohs(ip_hdr->tot_len));
+        printf("source_ip: ");
+        	for(i=0;i<=3;++i) {
+                        printf("%d%s",
+                        (ip_hdr->saddr&(0xff<<(8*i)))>>(8*i),
+                        (i==3?"\n":"."));
+                }
+        printf("destination_ip: ");
+        for(i=0;i<=3;++i) {
+        	printf("%d%s",
+               	(ip_hdr->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));
+        printf("time2live = %x ip_proto = %x\n",ntohs(ip_hdr->ttl),
+                                                ntohs(ip_hdr->protocol));
+        // printf("chksum: %x\n",ntohs(ip_hdr->ip_sum));
+}
diff --git a/hdw-sniff.h b/hdw-sniff.h
index 38b2db9..908b95b 100644
--- a/hdw-sniff.h
+++ b/hdw-sniff.h
@@ -2,6 +2,9 @@
 #include "list.h"
 
 #define C_MAX 14
+#define IVLINE "%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n"
+#define cs(n) crypted_snap[n]
+#define IVL_ARGS cs(0),cs(1),cs(2),cs(3),cs(4),cs(5),cs(6),cs(7),cs(8),cs(9)
 
 /* the pcap_process callback function */
 void pcap_process(u_char *count,const struct pcap_pkthdr *pcap_header,
@@ -24,6 +27,7 @@ struct info_struct {
 
 /* hop_chanel function */
 int hop_channel(struct info_struct *info,int foo_fd);
+int parse_ip(char *ip_o); 
 
 /* ssid struct */
 struct ssid_struct {