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Typedefs | |
| typedef void(* | pcap_handler )(u_char *user, const struct pcap_pkthdr *pkt_header, const u_char *pkt_data) |
| Prototype of the callback function that receives the packets. | |
Functions | |
| pcap_t * | pcap_open_live (char *device, int snaplen, int promisc, int to_ms, char *ebuf) |
| Deprecated: use the pcap_open() instead. Opens a physical interface for live capture. | |
| pcap_t * | pcap_open_dead (int linktype, int snaplen) |
| Deprecated: use the pcap_open() instead. Creates a pcap_t structure without starting a capture. | |
| pcap_t * | pcap_open_offline (const char *fname, char *errbuf) |
| Deprecated: use the pcap_open() instead. Opens a savefile in the tcpdump/libpcap format to read the packets. | |
| pcap_dumper_t * | pcap_dump_open (pcap_t *p, const char *fname) |
| Opens a file to write the network traffic. | |
| int | pcap_setnonblock (pcap_t *p, int nonblock, char *errbuf) |
| Switches between blocking and nonblocking mode. | |
| int | pcap_getnonblock (pcap_t *p, char *errbuf) |
| Gets the "non-blocking" state of an interface. | |
| int | pcap_findalldevs (pcap_if_t **alldevsp, char *errbuf) |
| Deprecated: use the pcap_findalldevs_ex() instead. Returns the list of the interfaces available on the system. | |
| void | pcap_freealldevs (pcap_if_t *alldevsp) |
| Frees an interface list returned by pcap_findalldevs(). | |
| char * | pcap_lookupdev (char *errbuf) |
| Deprecated, use pcap_findalldevs() instead. Returns the first valid device in the system. | |
| int | pcap_lookupnet (char *device, bpf_u_int32 *netp, bpf_u_int32 *maskp, char *errbuf) |
| Deprecated, use pcap_findalldevs() instead. Returns the subnet and netmask of an interface. | |
| int | pcap_dispatch (pcap_t *p, int cnt, pcap_handler callback, u_char *user) |
| Deprecated: use the pcap_next_ex() instead. Collects a group of packets. Returns when cnt packets have been received or when the timeout set with pcap_open_live() expires. | |
| int | pcap_loop (pcap_t *p, int cnt, pcap_handler callback, u_char *user) |
| Deprecated: use the pcap_next_ex() instead. Collects a group of packets. Returns when cnt packets have been received, but doesn't respect the timeout set with pcap_open_live(), therefore it can block forever. | |
| void | pcap_dump (u_char *user, const struct pcap_pkthdr *h, const u_char *sp) |
| Saves a packet to disk. | |
| int | pcap_compile (pcap_t *p, struct bpf_program *fp, char *str, int optimize, bpf_u_int32 netmask) |
| Compiles a packet filter. Converts an high level filtering expression (see Filtering expression syntax ) in a program that can be interpreted by the kernel-level filtering engine. | |
| int | pcap_compile_nopcap (int snaplen_arg, int linktype_arg, struct bpf_program *program, char *buf, int optimize, bpf_u_int32 mask) |
| Deprecated, use pcap_open_dead() and pcap_compile() instead . Compiles a packet filter without the need of opening an adapter. Converts an high level filtering expression (see Filtering expression syntax ) in a program that can be interpreted by the kernel-level filtering engine. | |
| int | pcap_setfilter (pcap_t *p, struct bpf_program *fp) |
| Associates a filter to a capture. | |
| void | pcap_freecode (struct bpf_program *fp) |
| Frees a filter. | |
| u_char * | pcap_next (pcap_t *p, struct pcap_pkthdr *h) |
| Discouraged, use pcap_next_ex() instead. Returns the next available packet. | |
| int | pcap_datalink (pcap_t *p) |
| Returns the link layer of an adapter. | |
| int | pcap_snapshot (pcap_t *p) |
| Returns the dimension of the packet portion (in bytes) that is delivered to the application. | |
| int | pcap_is_swapped (pcap_t *p) |
| returns true if the current savefile uses a different byte order than the current system. | |
| int | pcap_major_version (pcap_t *p) |
| returns the major version number of the pcap library used to write the savefile. | |
| int | pcap_minor_version (pcap_t *p) |
| returns the minor version number of the pcap library used to write the savefile. | |
| int | pcap_stats (pcap_t *p, struct pcap_stat *ps) |
| Discouraged, Use pcap_stats_ex() instead. Returns statistics on current capture. | |
| FILE * | pcap_file (pcap_t *p) |
| Discouraged, use pcap_dump() instead. Returns the stdio stream of an offile capture. | |
| int | pcap_fileno (pcap_t *p) |
| Deprecated, handling the device descriptor directly is useless under Win32. Returns the file descriptor of a capture device. | |
| void | pcap_perror (pcap_t *p, char *prefix) |
| prints the text of the last pcap library error on stderr, prefixed by prefix. | |
| char * | pcap_geterr (pcap_t *p) |
| returns the error text pertaining to the last pcap library error. | |
| char * | pcap_strerror (int error) |
| pcap_strerror() is provided in case strerror() isn't available. | |
| fn void | pcap_close (pcap_t *p) |
| closes the files associated with p and deallocates resources. | |
| fn void | pcap_dump_close (pcap_dumper_t *p) |
| pcap_dump_close() closes the "savefile". | |
| fn int | pcap_setbuff (pcap_t *p, int dim) |
| Win32 Specific. Sets the size of the kernel buffer associated with an adapter. | |
| int | pcap_setmode (pcap_t *p, int mode) |
| Win32 Specific. Sets the working mode of the interface p to mode. | |
| int | pcap_sendpacket (pcap_t *p, u_char *buf, int size) |
| Win32 Specific. Sends a raw packet. | |
| int | pcap_setmintocopy (pcap_t *p, int size) |
| Win32 Specific. Sets the minumum amount of data received by the kernel in a single call. | |
| HANDLE | pcap_getevent (pcap_t *p) |
| Win32 Specific. Returns the handle of the event associated with the interface p. | |
| pcap_send_queue * | pcap_sendqueue_alloc (u_int memsize) |
| Win32 Specific. Allocate a send queue. | |
| void | pcap_sendqueue_destroy (pcap_send_queue *queue) |
| Win32 Specific. Destroy a send queue. | |
| int | pcap_sendqueue_queue (pcap_send_queue *queue, const struct pcap_pkthdr *pkt_header, const u_char *pkt_data) |
| Win32 Specific. Add a packet to a send queue. | |
| u_int | pcap_sendqueue_transmit (pcap_t *p, pcap_send_queue *queue, int sync) |
| Win32 Specific. Sends a queue of raw packets to the network. | |
| int | pcap_next_ex (pcap_t *p, struct pcap_pkthdr **pkt_header, u_char **pkt_data) |
| Win32 Specific. Read a packet from an interface or from an offline capture. | |
| int | pcap_live_dump (pcap_t *p, char *filename, int maxsize, int maxpacks) |
| Win32 Specific. Saves a capture to file. | |
| int | pcap_live_dump_ended (pcap_t *p, int sync) |
| Win32 Specific. Returns the status of the kernel dump process, i.e. tells if one of the limits defined with pcap_live_dump() has been reached. | |
| int | pcap_stats_ex (pcap_t *p, struct pcap_stat *ps) |
| Win32 Specific. Returns statistics on current capture. | |
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