From: hackbard <hackbard>
Date: Mon, 2 Dec 2002 23:35:24 +0000 (+0000)
Subject: added list support
X-Git-Url: https://hackdaworld.org/gitweb/?p=my-code%2Fhdw-sniff.git;a=commitdiff_plain;h=551ef6ebd6cfbf7caf60dd132953fad4b687f107

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;i<pcap_header->caplen;i++)
 		printf("%x ",*(package+i));
 	printf("\n");
+#ifdef DEBUG_CHAR
 	printf("all dump: (char)\n");
 	for(i=p_o+w_o;i<pcap_header->caplen;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 <linux/wireless.h>
+#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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+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);