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/* $Id$ */
#ifndef SNIFFER_HH
#define SNIFFER_HH
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <pcap.h>
#include <errno.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <net/bpf.h>
#define DEFAULT_PATH "/proc/driver/aironet/%s/Config"
#define CARD_TYPE_CISCO 1
#define CARD_TYPE_NG 2
#define CARD_TYPE_HOSTAP 3
#define NONBROADCASTING "non-broadcasting"
/* only for now, until we have the daemon running */
/*the config file should provide these information */
#define SNIFFER_DEVICE "wlan0"
#define CARD_TYPE CARD_TYPE_CISCO
#define SBIN_PATH "/sbin/ifconfig %s promisc up"
#define WLANCTL_PATH "/sbin/wlanctl-ng"
/* holds all the interresting data */
struct packetinfo
{
int isvalid;
int pktlen;
int fctype;
int fcsubtype;
int fc_wep;
int cap_WEP;
int cap_IBSS;
int cap_ESS;
int channel;
char bssid[sizeof("00:00:00:00:00:00")];
char desthwaddr[sizeof("00:00:00:00:00:00")];
char sndhwaddr[sizeof("00:00:00:00:00:00")];
char *ssid;
int ssid_len;
};
/* Prototypes */
int sniffer(void);
int card_into_monitormode (char * device, int cardtype);
int card_set_promisc_up (char * device);
int start_sniffing (char * device);
void process_packets(u_char *useless,const struct pcap_pkthdr* pkthdr,const u_char* packet);
int decode_80211b_hdr(const u_char *p,struct packetinfo *ppinfo);
void etheraddr_string(register const u_char *ep,char * text);
int handle_beacon(u_int16_t fc, const u_char *p,struct packetinfo *ppinfo);
static int GetHeaderLength(u_int16_t fc);
/*
* True if "l" bytes of "var" were captured.
*
* The "snapend - (l) <= snapend" checks to make sure "l" isn't so large
* that "snapend - (l)" underflows.
*
* The check is for <= rather than < because "l" might be 0.
*/
#define TTEST2(var, l) (snapend - (l) <= snapend && \
(const u_char *)&(var) <= snapend - (l))
/* True if "var" was captured */
#define TTEST(var) TTEST2(var, sizeof(var))
/* Bail if "l" bytes of "var" were not captured */
#define TCHECK2(var, l) if (!TTEST2(var, l)) goto trunc
/* Bail if "var" was not captured */
#define TCHECK(var) TCHECK2(var, sizeof(var))
#endif /* SNIFFER_HH */
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