Sniffer changed to pcap_next

1 files changed, 14 insertions, 4 deletions

diff --git a/noncore/net/wellenreiter/daemon/source/sniffer.cc b/noncore/net/wellenreiter/daemon/source/sniffer.cc
index 65c8579..be64d67 100644
--- a/noncore/net/wellenreiter/daemon/source/sniffer.cc
+++ b/noncore/net/wellenreiter/daemon/source/sniffer.cc
@@ -1,149 +1,159 @@
 /* 
  *  rfmon mode sniffer
  *  This works only with cisco wireless cards with an rfmon
  *  able driver and not with wifi stuff.
  *
  *  $Id$
  */
 
 #include "config.hh"
 #include "cardmode.hh"
 #include "sniffer.hh"
 #include "ieee802_11.hh"
 #include "extract.hh"
 
 int main(void)
 {	
 	if(card_into_monitormode (SNIFFER_DEVICE, CARD_TYPE_NG) < 0)
 		return 0;
 	start_sniffing (SNIFFER_DEVICE);	
 
   return 1;
 }
 
 int start_sniffing (char * device)
 {
  
-	pcap_t *handletopcap;
-	char errbuf[PCAP_ERRBUF_SIZE];
+	pcap_t *handletopcap;		  /* The handle to the libpcap */
+	char errbuf[PCAP_ERRBUF_SIZE]; /* The errorbuffer of libpacap */
+	struct pcap_pkthdr header;     /* The packet header from pcap*/
+    const u_char *packet;          /* The actual packet content*/
 
 	/* opening the pcap for sniffing */
 	handletopcap = pcap_open_live(device, BUFSIZ, 1, 1000, errbuf);
 
 	#ifdef HAVE_PCAP_NONBLOCK
     	pcap_setnonblock(handletopcap, 1, errstr);
 	#endif
 	/*start scanning */
-	pcap_loop(handletopcap,-1,process_packets,NULL);
+//	pcap_loop(handletopcap,-1,process_packets,NULL);
+	/* Loope endless */
+	while(1)
+	{
+		/* Grab one single packet */
+ 	   packet = pcap_next(handletopcap, &header);
+
+		/* process the packet */
+		process_packets(NULL,&header,*&packet);		
+	}
 
 	printf("\nDone processing packets... wheew!\n");
 	return 1;
 }
 
 void process_packets(u_char *useless,const struct pcap_pkthdr* pkthdr,const u_char* packet)
 {
 	u_int caplen = pkthdr->caplen;
 	u_int length = pkthdr->len;
 	u_int16_t fc;
 	u_int HEADER_LENGTH;
 
 	/* pinfo holds all interresting information for us */
 	struct packetinfo pinfo;
 	struct packetinfo *pinfoptr;
 	pinfoptr=&pinfo;
 	
 	pinfoptr->isvalid = 0;
 	pinfoptr->pktlen = pkthdr->len;
 
 	if (caplen < IEEE802_11_FC_LEN) 
 	{
 		/* This is a garbage packet, because is does not long enough
 		   to hold a 802.11b header */
 		pinfoptr->isvalid = 0;
 		return;
 	}
 
 	/* Gets the framecontrol bits (2bytes long) */
 	fc = EXTRACT_LE_16BITS(packet);
 
 	HEADER_LENGTH = GetHeaderLength(fc);
 
 	if (caplen < HEADER_LENGTH) 
 	{
 		/* This is a garbage packet, because it is not long enough
 		   to hold a correct header of its type */
 		pinfoptr->isvalid = 0;
 		return;
 	}
 
 	/* Decode 802.11b header out of the packet */
 	if (decode_80211b_hdr(packet,pinfoptr) == 0)
 	{
 		/* Justification of the ofset to further process the packet */
 		length -= HEADER_LENGTH;
 		caplen -= HEADER_LENGTH;
 		packet += HEADER_LENGTH;
 	}
 	else
 	{   /* Something is wrong,could not be a correct packet */
 		return;
 	}
 	
 	switch (FC_TYPE(fc)) 
 	{
 		/* Is it a managemnet frame? */
 		case T_MGMT:
 			switch (FC_SUBTYPE(fc))
 			{   /* Is it a beacon frame? */
 				case ST_BEACON:
 					if (handle_beacon(fc, packet,pinfoptr) ==0)
 					{
-						printf ("\n\tOn network : %s",pinfoptr->ssid);
 						if (!strcmp(pinfoptr->desthwaddr,"ff:ff:ff:ff:ff:ff") == 0)
 						{
 							/* Every beacon must have the broadcast as destination
 							   so it must be a shitti packet */
 							pinfoptr->isvalid = 0;
 							return;
 						} 
 
 						if (pinfoptr->cap_ESS == pinfoptr->cap_IBSS)
 						{
 							/* Only one of both are possible, so must be 
 							   a noise packet, if this comes up */
 							pinfoptr->isvalid = 0;
 							return;
 						}
 						if (pinfoptr->channel < 1 || pinfoptr->channel > 14)
 						{
 							/* Only channels between 1 and 14 are possible
 							   others must be noise packets */
 							pinfoptr->isvalid = 0;
 							return;
 						}
 							   
 						/* Here should be the infos to the gui issued */
 						if (pinfoptr->cap_ESS == 1 &&pinfoptr->cap_IBSS ==0)
 						{
 							printf ("\nHave found an accesspoint:");
 						}
 						else if(pinfoptr->cap_ESS == 0 && pinfoptr->cap_IBSS == 1) 
 						{
 							printf ("\nHave found an AD-HOC station:");
 							
 						}
 						if (strcmp (pinfoptr->ssid,NONBROADCASTING) ==0)
 						{
 							printf ("\n\tOn a non-broadcasting network");
 						}
 						else
 						{
 							printf ("\n\tOn network : %s",pinfoptr->ssid);
 						}
 							printf ("\n\tLen SSID   : %d",pinfoptr->ssid_len);
 							printf ("\n\tOn Channel : %d",pinfoptr->channel);
 							printf ("\n\tEncryption : %s", pinfoptr->cap_WEP ? "ON" : "OFF");
 							printf ("\n\tMacaddress : %s",pinfoptr->sndhwaddr);
 							printf ("\n\tBssid      : %s",pinfoptr->bssid);
 							printf ("\n\tDest	   : %s\n",pinfoptr->desthwaddr);
 					}