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#include <stdlib.h>
#include <stdio.h>
#include <pcap.h>
#define DP_ERRBUF_SIZE PCAP_ERRBUF_SIZE
/* definitions */
enum dp_packet_type {
dp_packet_ethernet,
dp_packet_ppp,
dp_packet_sll,
dp_packet_ip,
dp_packet_ip6,
dp_packet_tcp,
dp_packet_udp,
dp_n_packet_types
};
/*enum dp_link_type {
dp_link_ethernet,
dp_link_ppp,
dp_n_link_types
};*/
/*struct dp_header {
* pcap
};*/
typedef struct pcap_pkthdr dp_header;
typedef int (*dp_callback)(u_char *, const dp_header *, const u_char *);
struct dp_handle {
pcap_t * pcap_handle;
dp_callback callback [dp_n_packet_types];
int linktype;
u_char * userdata;
int userdata_size;
};
/* functions to set up a handle (which is basically just a pcap handle) */
struct dp_handle * dp_open_live(const char * device, int snaplen, int promisc, int to_ms, const char * ebuf);
struct dp_handle * dp_open_offline(char * fname, char * ebuf);
/* functions to add callbacks */
void dp_addcb (struct dp_handle * handle, enum dp_packet_type type, dp_callback callback);
/* functions to parse payloads */
void dp_parse (enum dp_packet_type type, void * packet);
/* functions to start monitoring */
int dp_dispatch (struct dp_handle * handler, int count, u_char *user, int size);
/* functions that simply call libpcap */
int dp_datalink(struct dp_handle * handle);
int dp_setnonblock (struct dp_handle * handle, int i, char * errbuf);
char * dp_geterr (struct dp_handle * handle);
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