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