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libnet-functions.h File Reference

libnet exported function prototypes More...

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Defines

#define libnet_egre_length   libnet_gre_length
#define libnet_build_egre   libnet_build_gre

Functions

libnet_t * libnet_init (int injection_type, char *device, char *err_buf)
void libnet_destroy (libnet_t *l)
void libnet_clear_packet (libnet_t *l)
void libnet_stats (libnet_t *l, struct libnet_stats *ls)
int libnet_getfd (libnet_t *l)
int8_t * libnet_getdevice (libnet_t *l)
u_int8_t * libnet_getpbuf (libnet_t *l, libnet_ptag_t ptag)
u_int32_t libnet_getpbuf_size (libnet_t *l, libnet_ptag_t ptag)
char * libnet_geterror (libnet_t *l)
int libnet_seed_prand (libnet_t *l)
u_int32_t libnet_get_prand (int mod)
int libnet_toggle_checksum (libnet_t *l, libnet_ptag_t ptag, int mode)
char * libnet_addr2name4 (u_int32_t in, u_int8_t use_name)
u_int32_t libnet_name2addr4 (libnet_t *l, char *host_name, u_int8_t use_name)
libnet_in6_addr libnet_name2addr6 (libnet_t *l, char *host_name, u_int8_t use_name)
void libnet_addr2name6_r (struct libnet_in6_addr addr, u_int8_t use_name, char *host_name, int host_name_len)
int libnet_plist_chain_new (libnet_t *l, libnet_plist_t **plist, char *token_list)
int libnet_plist_chain_next_pair (libnet_plist_t *plist, u_int16_t *bport, u_int16_t *eport)
int libnet_plist_chain_dump (libnet_plist_t *plist)
char * libnet_plist_chain_dump_string (libnet_plist_t *plist)
int libnet_plist_chain_free (libnet_plist_t *plist)
libnet_ptag_t libnet_build_802_1q (u_int8_t *dst, u_int8_t *src, u_int16_t tpi, u_int8_t priority, u_int8_t cfi, u_int16_t vlan_id, u_int16_t len_proto, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_802_1x (u_int8_t eap_ver, u_int8_t eap_type, u_int16_t length, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_802_2 (u_int8_t dsap, u_int8_t ssap, u_int8_t control, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_802_2snap (u_int8_t dsap, u_int8_t ssap, u_int8_t control, u_int8_t *oui, u_int16_t type, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_802_3 (u_int8_t *dst, u_int8_t *src, u_int16_t len, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_ethernet (u_int8_t *dst, u_int8_t *src, u_int16_t type, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_autobuild_ethernet (u_int8_t *dst, u_int16_t type, libnet_t *l)
libnet_ptag_t libnet_build_fddi (u_int8_t fc, u_int8_t *dst, u_int8_t *src, u_int8_t dsap, u_int8_t ssap, u_int8_t cf, u_int8_t *org, u_int16_t type, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_autobuild_fddi (u_int8_t fc, u_int8_t *dst, u_int8_t dsap, u_int8_t ssap, u_int8_t cf, u_int8_t *org, u_int16_t type, libnet_t *l)
libnet_ptag_t libnet_build_arp (u_int16_t hrd, u_int16_t pro, u_int8_t hln, u_int8_t pln, u_int16_t op, u_int8_t *sha, u_int8_t *spa, u_int8_t *tha, u_int8_t *tpa, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_autobuild_arp (u_int16_t op, u_int8_t *sha, u_int8_t *spa, u_int8_t *tha, u_int8_t *tpa, libnet_t *l)
libnet_ptag_t libnet_build_tcp (u_int16_t sp, u_int16_t dp, u_int32_t seq, u_int32_t ack, u_int8_t control, u_int16_t win, u_int16_t sum, u_int16_t urg, u_int16_t len, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_tcp_options (u_int8_t *options, u_int32_t options_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_udp (u_int16_t sp, u_int16_t dp, u_int16_t len, u_int16_t sum, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_cdp (u_int8_t version, u_int8_t ttl, u_int16_t sum, u_int16_t type, u_int16_t len, u_int8_t *value, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_icmpv4_echo (u_int8_t type, u_int8_t code, u_int16_t sum, u_int16_t id, u_int16_t seq, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_icmpv4_mask (u_int8_t type, u_int8_t code, u_int16_t sum, u_int16_t id, u_int16_t seq, u_int32_t mask, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_icmpv4_unreach (u_int8_t type, u_int8_t code, u_int16_t sum, u_int16_t orig_len, u_int8_t orig_tos, u_int16_t orig_id, u_int16_t orig_frag, u_int8_t orig_ttl, u_int8_t orig_prot, u_int16_t orig_check, u_int32_t orig_src, u_int32_t orig_dst, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_icmpv4_redirect (u_int8_t type, u_int8_t code, u_int16_t sum, u_int32_t gateway, u_int16_t orig_len, u_int8_t orig_tos, u_int16_t orig_id, u_int16_t orig_frag, u_int8_t orig_ttl, u_int8_t orig_prot, u_int16_t orig_check, u_int32_t orig_src, u_int32_t orig_dst, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_icmpv4_timeexceed (u_int8_t type, u_int8_t code, u_int16_t sum, u_int16_t orig_len, u_int8_t orig_tos, u_int16_t orig_id, u_int16_t orig_frag, u_int8_t orig_ttl, u_int8_t orig_prot, u_int16_t orig_check, u_int32_t orig_src, u_int32_t orig_dst, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_icmpv4_timestamp (u_int8_t type, u_int8_t code, u_int16_t sum, u_int16_t id, u_int16_t seq, n_time otime, n_time rtime, n_time ttime, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_igmp (u_int8_t type, u_int8_t code, u_int16_t sum, u_int32_t ip, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_ipv4 (u_int16_t len, u_int8_t tos, u_int16_t id, u_int16_t frag, u_int8_t ttl, u_int8_t prot, u_int16_t sum, u_int32_t src, u_int32_t dst, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_ipv4_options (u_int8_t *options, u_int32_t options_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_autobuild_ipv4 (u_int16_t len, u_int8_t prot, u_int32_t dst, libnet_t *l)
libnet_ptag_t libnet_build_ipv6 (u_int8_t tc, u_int32_t fl, u_int16_t len, u_int8_t nh, u_int8_t hl, struct libnet_in6_addr src, struct libnet_in6_addr dst, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_autobuild_ipv6 (u_int16_t len, u_int8_t nh, struct libnet_in6_addr dst, libnet_t *l)
libnet_ptag_t libnet_build_isl (u_int8_t *dhost, u_int8_t type, u_int8_t user, u_int8_t *shost, u_int16_t len, u_int8_t *snap, u_int16_t vid, u_int16_t index, u_int16_t reserved, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_ipsec_esp_hdr (u_int32_t spi, u_int32_t seq, u_int32_t iv, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_ipsec_esp_ftr (u_int8_t len, u_int8_t nxt_hdr, int8_t *auth, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_ipsec_ah (u_int8_t nxt_hdr, u_int8_t len, u_int16_t res, u_int32_t spi, u_int32_t seq, u_int32_t auth, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_dnsv4 (u_int16_t h_len, u_int16_t id, u_int16_t flags, u_int16_t num_q, u_int16_t num_anws_rr, u_int16_t num_auth_rr, u_int16_t num_addi_rr, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_rip (u_int8_t cmd, u_int8_t version, u_int16_t rd, u_int16_t af, u_int16_t rt, u_int32_t addr, u_int32_t mask, u_int32_t next_hop, u_int32_t metric, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_rpc_call (u_int32_t rm, u_int32_t xid, u_int32_t prog_num, u_int32_t prog_vers, u_int32_t procedure, u_int32_t cflavor, u_int32_t clength, u_int8_t *cdata, u_int32_t vflavor, u_int32_t vlength, u_int8_t *vdata, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_stp_conf (u_int16_t id, u_int8_t version, u_int8_t bpdu_type, u_int8_t flags, u_int8_t *root_id, u_int32_t root_pc, u_int8_t *bridge_id, u_int16_t port_id, u_int16_t message_age, u_int16_t max_age, u_int16_t hello_time, u_int16_t f_delay, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_stp_tcn (u_int16_t id, u_int8_t version, u_int8_t bpdu_type, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_token_ring (u_int8_t ac, u_int8_t fc, u_int8_t *dst, u_int8_t *src, u_int8_t dsap, u_int8_t ssap, u_int8_t cf, u_int8_t *org, u_int16_t type, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_autobuild_token_ring (u_int8_t ac, u_int8_t fc, u_int8_t *dst, u_int8_t dsap, u_int8_t ssap, u_int8_t cf, u_int8_t *org, u_int16_t type, libnet_t *l)
libnet_ptag_t libnet_build_vrrp (u_int8_t version, u_int8_t type, u_int8_t vrouter_id, u_int8_t priority, u_int8_t ip_count, u_int8_t auth_type, u_int8_t advert_int, u_int16_t sum, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_mpls (u_int32_t label, u_int8_t experimental, u_int8_t bos, u_int8_t ttl, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_ntp (u_int8_t leap_indicator, u_int8_t version, u_int8_t mode, u_int8_t stratum, u_int8_t poll, u_int8_t precision, u_int16_t delay_int, u_int16_t delay_frac, u_int16_t dispersion_int, u_int16_t dispersion_frac, u_int32_t reference_id, u_int32_t ref_ts_int, u_int32_t ref_ts_frac, u_int32_t orig_ts_int, u_int32_t orig_ts_frac, u_int32_t rec_ts_int, u_int32_t rec_ts_frac, u_int32_t xmt_ts_int, u_int32_t xmt_ts_frac, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_ospfv2 (u_int16_t len, u_int8_t type, u_int32_t rtr_id, u_int32_t area_id, u_int16_t sum, u_int16_t autype, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_ospfv2_hello (u_int32_t netmask, u_int16_t interval, u_int8_t opts, u_int8_t priority, u_int dead_int, u_int32_t des_rtr, u_int32_t bkup_rtr, u_int32_t neighbor, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_ospfv2_dbd (u_int16_t dgram_len, u_int8_t opts, u_int8_t type, u_int seqnum, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_ospfv2_lsr (u_int type, u_int lsid, u_int32_t advrtr, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_ospfv2_lsu (u_int num, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_ospfv2_lsa (u_int16_t age, u_int8_t opts, u_int8_t type, u_int lsid, u_int32_t advrtr, u_int seqnum, u_int16_t sum, u_int16_t len, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_ospfv2_lsa_rtr (u_int16_t flags, u_int16_t num, u_int id, u_int data, u_int8_t type, u_int8_t tos, u_int16_t metric, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_ospfv2_lsa_net (u_int32_t nmask, u_int rtrid, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_ospfv2_lsa_sum (u_int32_t nmask, u_int metric, u_int tos, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_ospfv2_lsa_as (u_int32_t nmask, u_int metric, u_int32_t fwdaddr, u_int tag, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_data (u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_dhcpv4 (u_int8_t opcode, u_int8_t htype, u_int8_t hlen, u_int8_t hopcount, u_int32_t xid, u_int16_t secs, u_int16_t flags, u_int32_t cip, u_int32_t yip, u_int32_t sip, u_int32_t gip, u_int8_t *chaddr, u_int8_t *sname, u_int8_t *file, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_bootpv4 (u_int8_t opcode, u_int8_t htype, u_int8_t hlen, u_int8_t hopcount, u_int32_t xid, u_int16_t secs, u_int16_t flags, u_int32_t cip, u_int32_t yip, u_int32_t sip, u_int32_t gip, u_int8_t *chaddr, u_int8_t *sname, u_int8_t *file, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
u_int32_t libnet_gre_length (u_int16_t fv)
libnet_ptag_t libnet_build_gre (u_int16_t fv, u_int16_t type, u_int16_t checksum, u_int16_t offset, u_int32_t key, u_int32_t seq, u_int16_t len, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_gre_sre (u_int16_t af, u_int8_t offset, u_int8_t length, u_int8_t *routing, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_gre_last_sre (libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_bgp4_header (u_int8_t marker[LIBNET_BGP4_MARKER_SIZE], u_int16_t len, u_int8_t type, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_bgp4_open (u_int8_t version, u_int16_t src_as, u_int16_t hold_time, u_int32_t bgp_id, u_int8_t opt_len, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_bgp4_update (u_int16_t unfeasible_rt_len, u_int8_t *withdrawn_rt, u_int16_t total_path_attr_len, u_int8_t *path_attributes, u_int16_t info_len, u_int8_t *reachability_info, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_bgp4_notification (u_int8_t err_code, u_int8_t err_subcode, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_build_link (u_int8_t *dst, u_int8_t *src, u_int16_t type, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
libnet_ptag_t libnet_autobuild_link (u_int8_t *dst, u_int16_t type, libnet_t *l)
int libnet_write (libnet_t *l)
int libnet_write_raw_ipv4 (libnet_t *l, u_int8_t *packet, u_int32_t size)
int libnet_write_raw_ipv6 (libnet_t *l, u_int8_t *packet, u_int32_t size)
int libnet_write_link (libnet_t *l, u_int8_t *packet, u_int32_t size)
int libnet_open_raw4 (libnet_t *l)
int libnet_close_raw4 (libnet_t *l)
int libnet_open_raw6 (libnet_t *l)
int libnet_close_raw6 (libnet_t *l)
int libnet_select_device (libnet_t *l)
int libnet_open_link (libnet_t *l)
int libnet_close_link (libnet_t *l)
u_int32_t libnet_get_ipaddr4 (libnet_t *l)
libnet_in6_addr libnet_get_ipaddr6 (libnet_t *l)
libnet_ether_addr * libnet_get_hwaddr (libnet_t *l)
int libnet_do_checksum (libnet_t *l, u_int8_t *packet, int protocol, int len)
u_int32_t libnet_compute_crc (u_int8_t *buf, u_int32_t len)
u_int16_t libnet_ip_check (u_int16_t *addr, int len)
int libnet_in_cksum (u_int16_t *addr, int len)
libnet_pblock_t * libnet_pblock_probe (libnet_t *l, libnet_ptag_t ptag, u_int32_t n, u_int8_t type)
libnet_pblock_t * libnet_pblock_new (libnet_t *l, u_int32_t size)
int libnet_pblock_swap (libnet_t *l, libnet_ptag_t ptag1, libnet_ptag_t ptag2)
int libnet_pblock_insert_before (libnet_t *l, libnet_ptag_t ptag1, libnet_ptag_t ptag2)
void libnet_pblock_delete (libnet_t *l, libnet_pblock_t *p)
libnet_ptag_t libnet_pblock_update (libnet_t *l, libnet_pblock_t *p, u_int32_t h, u_int8_t type)
libnet_pblock_t * libnet_pblock_find (libnet_t *l, libnet_ptag_t ptag)
int libnet_pblock_append (libnet_t *l, libnet_pblock_t *p, u_int8_t *buf, u_int32_t len)
void libnet_pblock_setflags (libnet_pblock_t *p, u_int8_t flags)
int libnet_pblock_p2p (u_int8_t type)
int libnet_pblock_coalesce (libnet_t *l, u_int8_t **packet, u_int32_t *size)
void __libnet_dump_context (libnet_t *l)
void __libnet_dump_pblock (libnet_t *l)
int8_t * __libnet_dump_pblock_type (u_int8_t type)
void __libnet_dump_hex (u_int8_t *packet, u_int32_t len, int swap, FILE *stream)
u_int8_t * libnet_hex_aton (int8_t *s, int *len)
int libnet_adv_cull_packet (libnet_t *l, u_int8_t **packet, u_int32_t *packet_s)
int libnet_adv_cull_header (libnet_t *l, libnet_ptag_t ptag, u_int8_t **header, u_int32_t *header_s)
int libnet_adv_write_link (libnet_t *l, u_int8_t *packet, u_int32_t packet_s)
int libnet_cq_add (libnet_t *l, char *label)
int libnet_cq_remove (libnet_t *l)
int libnet_cq_remove_by_label (char *label)
int8_t * libnet_cq_getlabel (libnet_t *l)
libnet_t * libnet_cq_find_by_label (char *label)
void libnet_cq_destroy ()
libnet_t * libnet_cq_head ()
int libnet_cq_last ()
libnet_t * libnet_cq_next ()
u_int32_t libnet_cq_size ()

Variables

const struct libnet_in6_addr in6addr_error


Detailed Description

libnet exported function prototypes


Function Documentation

char* libnet_addr2name4 u_int32_t  in,
u_int8_t  use_name
 

Takes a network byte ordered IPv4 address and returns a pointer to either a canonical DNS name (if it has one) or a string of dotted decimals. This may incur a DNS lookup if the hostname and mode is set to LIBNET_RESOLVE. If mode is set to LIBNET_DONT_RESOLVE, no DNS lookup will be performed and the function will return a pointer to a dotted decimal string. The function cannot fail -- if no canonical name exists, it will fall back on returning a dotted decimal string. This function is non-reentrant.

Parameters:
in network byte ordered IPv4 address
use_name LIBNET_RESOLVE or LIBNET_DONT_RESOLVE
Returns:
a pointer to presentation format string

void libnet_addr2name6_r struct libnet_in6_addr  addr,
u_int8_t  use_name,
char *  host_name,
int  host_name_len
 

Should document this baby right here.

libnet_ptag_t libnet_autobuild_arp u_int16_t  op,
u_int8_t *  sha,
u_int8_t *  spa,
u_int8_t *  tha,
u_int8_t *  tpa,
libnet_t *  l
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_autobuild_ethernet u_int8_t *  dst,
u_int16_t  type,
libnet_t *  l
 

Autobuilds an Ethernet header. The RFC 894 Ethernet II header is almost identical to the IEEE 802.3 header, with the exception that the field immediately following the source address holds the layer 3 protocol (as opposed to frame's length). You should only use this function when libnet is initialized with the LIBNET_LINK interface.

Parameters:
dst destination ethernet address
type upper layer protocol type
l pointer to a libnet context
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_autobuild_fddi u_int8_t  fc,
u_int8_t *  dst,
u_int8_t  dsap,
u_int8_t  ssap,
u_int8_t  cf,
u_int8_t *  org,
u_int16_t  type,
libnet_t *  l
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_autobuild_ipv4 u_int16_t  len,
u_int8_t  prot,
u_int32_t  dst,
libnet_t *  l
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_autobuild_ipv6 u_int16_t  len,
u_int8_t  nh,
struct libnet_in6_addr  dst,
libnet_t *  l
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_autobuild_link u_int8_t *  dst,
u_int16_t  type,
libnet_t *  l
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_autobuild_token_ring u_int8_t  ac,
u_int8_t  fc,
u_int8_t *  dst,
u_int8_t  dsap,
u_int8_t  ssap,
u_int8_t  cf,
u_int8_t *  org,
u_int16_t  type,
libnet_t *  l
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_802_1q u_int8_t *  dst,
u_int8_t *  src,
u_int16_t  tpi,
u_int8_t  priority,
u_int8_t  cfi,
u_int16_t  vlan_id,
u_int16_t  len_proto,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Builds an IEEE 802.1q VLAN tagging header. Depending on the value of len_proto, the function wraps the 802.1q header inside either an IEEE 802.3 header or an RFC 894 Ethernet II (DIX) header (both resulting in an 18-byte frame). If len is 1500 or less, most receiving protocol stacks parse the frame as an IEEE 802.3 encapsulated frame. If len is one of the Ethernet type values, most protocol stacks parse the frame as an RFC 894 Ethernet II encapsulated frame. Note the length value is calculated without the 802.1q header of 18 bytes.

Parameters:
dst pointer to a six byte source ethernet address
src pointer to a six byte destination ethernet address
tpi tag protocol identifier
priority priority
cfi canonical format indicator
vlan_id vlan identifier
len_proto length (802.3) protocol (Ethernet II)
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_802_1x u_int8_t  eap_ver,
u_int8_t  eap_type,
u_int16_t  length,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Builds an IEEE 802.1x extended authentication protocol header.

Parameters:
eap_ver the EAP version
eap_type the EAP type
length frame length
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_802_2 u_int8_t  dsap,
u_int8_t  ssap,
u_int8_t  control,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Builds an IEEE 802.2 LLC header.

Parameters:
dsap destination service access point
ssap source service access point
control control field
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_802_2snap u_int8_t  dsap,
u_int8_t  ssap,
u_int8_t  control,
u_int8_t *  oui,
u_int16_t  type,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Builds an IEEE 802.2 LLC SNAP header.

Parameters:
dsap destination service access point
ssap source service access point
control control field
oui Organizationally Unique Identifier
type upper layer protocol
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_802_3 u_int8_t *  dst,
u_int8_t *  src,
u_int16_t  len,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Builds an IEEE 802.3 header. The 802.3 header is almost identical to the RFC 894 Ethernet II header, the exception being that the field immediately following the source address holds the frame's length (as opposed to the layer 3 protocol). You should only use this function when libnet is initialized with the LIBNET_LINK interface.

Parameters:
dst destination ethernet address
src source ethernet address
len frame length sans header
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_arp u_int16_t  hrd,
u_int16_t  pro,
u_int8_t  hln,
u_int8_t  pln,
u_int16_t  op,
u_int8_t *  sha,
u_int8_t *  spa,
u_int8_t *  tha,
u_int8_t *  tpa,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_bgp4_header u_int8_t  marker[LIBNET_BGP4_MARKER_SIZE],
u_int16_t  len,
u_int8_t  type,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_bgp4_notification u_int8_t  err_code,
u_int8_t  err_subcode,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_bgp4_open u_int8_t  version,
u_int16_t  src_as,
u_int16_t  hold_time,
u_int32_t  bgp_id,
u_int8_t  opt_len,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_bgp4_update u_int16_t  unfeasible_rt_len,
u_int8_t *  withdrawn_rt,
u_int16_t  total_path_attr_len,
u_int8_t *  path_attributes,
u_int16_t  info_len,
u_int8_t *  reachability_info,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_bootpv4 u_int8_t  opcode,
u_int8_t  htype,
u_int8_t  hlen,
u_int8_t  hopcount,
u_int32_t  xid,
u_int16_t  secs,
u_int16_t  flags,
u_int32_t  cip,
u_int32_t  yip,
u_int32_t  sip,
u_int32_t  gip,
u_int8_t *  chaddr,
u_int8_t *  sname,
u_int8_t *  file,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_cdp u_int8_t  version,
u_int8_t  ttl,
u_int16_t  sum,
u_int16_t  type,
u_int16_t  len,
u_int8_t *  value,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_data u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_dhcpv4 u_int8_t  opcode,
u_int8_t  htype,
u_int8_t  hlen,
u_int8_t  hopcount,
u_int32_t  xid,
u_int16_t  secs,
u_int16_t  flags,
u_int32_t  cip,
u_int32_t  yip,
u_int32_t  sip,
u_int32_t  gip,
u_int8_t *  chaddr,
u_int8_t *  sname,
u_int8_t *  file,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_dnsv4 u_int16_t  h_len,
u_int16_t  id,
u_int16_t  flags,
u_int16_t  num_q,
u_int16_t  num_anws_rr,
u_int16_t  num_auth_rr,
u_int16_t  num_addi_rr,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_ethernet u_int8_t *  dst,
u_int8_t *  src,
u_int16_t  type,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Builds an Ethernet header. The RFC 894 Ethernet II header is almost identical to the IEEE 802.3 header, with the exception that the field immediately following the source address holds the layer 3 protocol (as opposed to frame's length). You should only use this function when libnet is initialized with the LIBNET_LINK interface.

Parameters:
dst destination ethernet address
src source ethernet address
type upper layer protocol type
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_fddi u_int8_t  fc,
u_int8_t *  dst,
u_int8_t *  src,
u_int8_t  dsap,
u_int8_t  ssap,
u_int8_t  cf,
u_int8_t *  org,
u_int16_t  type,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_gre u_int16_t  fv,
u_int16_t  type,
u_int16_t  checksum,
u_int16_t  offset,
u_int32_t  key,
u_int32_t  seq,
u_int16_t  len,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_gre_last_sre libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_gre_sre u_int16_t  af,
u_int8_t  offset,
u_int8_t  length,
u_int8_t *  routing,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_icmpv4_echo u_int8_t  type,
u_int8_t  code,
u_int16_t  sum,
u_int16_t  id,
u_int16_t  seq,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_icmpv4_mask u_int8_t  type,
u_int8_t  code,
u_int16_t  sum,
u_int16_t  id,
u_int16_t  seq,
u_int32_t  mask,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_icmpv4_redirect u_int8_t  type,
u_int8_t  code,
u_int16_t  sum,
u_int32_t  gateway,
u_int16_t  orig_len,
u_int8_t  orig_tos,
u_int16_t  orig_id,
u_int16_t  orig_frag,
u_int8_t  orig_ttl,
u_int8_t  orig_prot,
u_int16_t  orig_check,
u_int32_t  orig_src,
u_int32_t  orig_dst,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_icmpv4_timeexceed u_int8_t  type,
u_int8_t  code,
u_int16_t  sum,
u_int16_t  orig_len,
u_int8_t  orig_tos,
u_int16_t  orig_id,
u_int16_t  orig_frag,
u_int8_t  orig_ttl,
u_int8_t  orig_prot,
u_int16_t  orig_check,
u_int32_t  orig_src,
u_int32_t  orig_dst,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_icmpv4_timestamp u_int8_t  type,
u_int8_t  code,
u_int16_t  sum,
u_int16_t  id,
u_int16_t  seq,
n_time  otime,
n_time  rtime,
n_time  ttime,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_icmpv4_unreach u_int8_t  type,
u_int8_t  code,
u_int16_t  sum,
u_int16_t  orig_len,
u_int8_t  orig_tos,
u_int16_t  orig_id,
u_int16_t  orig_frag,
u_int8_t  orig_ttl,
u_int8_t  orig_prot,
u_int16_t  orig_check,
u_int32_t  orig_src,
u_int32_t  orig_dst,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_igmp u_int8_t  type,
u_int8_t  code,
u_int16_t  sum,
u_int32_t  ip,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_ipsec_ah u_int8_t  nxt_hdr,
u_int8_t  len,
u_int16_t  res,
u_int32_t  spi,
u_int32_t  seq,
u_int32_t  auth,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_ipsec_esp_ftr u_int8_t  len,
u_int8_t  nxt_hdr,
int8_t *  auth,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_ipsec_esp_hdr u_int32_t  spi,
u_int32_t  seq,
u_int32_t  iv,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_ipv4 u_int16_t  len,
u_int8_t  tos,
u_int16_t  id,
u_int16_t  frag,
u_int8_t  ttl,
u_int8_t  prot,
u_int16_t  sum,
u_int32_t  src,
u_int32_t  dst,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_ipv4_options u_int8_t *  options,
u_int32_t  options_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_ipv6 u_int8_t  tc,
u_int32_t  fl,
u_int16_t  len,
u_int8_t  nh,
u_int8_t  hl,
struct libnet_in6_addr  src,
struct libnet_in6_addr  dst,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_isl u_int8_t *  dhost,
u_int8_t  type,
u_int8_t  user,
u_int8_t *  shost,
u_int16_t  len,
u_int8_t *  snap,
u_int16_t  vid,
u_int16_t  index,
u_int16_t  reserved,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_link u_int8_t *  dst,
u_int8_t *  src,
u_int16_t  type,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_mpls u_int32_t  label,
u_int8_t  experimental,
u_int8_t  bos,
u_int8_t  ttl,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_ntp u_int8_t  leap_indicator,
u_int8_t  version,
u_int8_t  mode,
u_int8_t  stratum,
u_int8_t  poll,
u_int8_t  precision,
u_int16_t  delay_int,
u_int16_t  delay_frac,
u_int16_t  dispersion_int,
u_int16_t  dispersion_frac,
u_int32_t  reference_id,
u_int32_t  ref_ts_int,
u_int32_t  ref_ts_frac,
u_int32_t  orig_ts_int,
u_int32_t  orig_ts_frac,
u_int32_t  rec_ts_int,
u_int32_t  rec_ts_frac,
u_int32_t  xmt_ts_int,
u_int32_t  xmt_ts_frac,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_ospfv2 u_int16_t  len,
u_int8_t  type,
u_int32_t  rtr_id,
u_int32_t  area_id,
u_int16_t  sum,
u_int16_t  autype,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_ospfv2_dbd u_int16_t  dgram_len,
u_int8_t  opts,
u_int8_t  type,
u_int  seqnum,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_ospfv2_hello u_int32_t  netmask,
u_int16_t  interval,
u_int8_t  opts,
u_int8_t  priority,
u_int  dead_int,
u_int32_t  des_rtr,
u_int32_t  bkup_rtr,
u_int32_t  neighbor,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_ospfv2_lsa u_int16_t  age,
u_int8_t  opts,
u_int8_t  type,
u_int  lsid,
u_int32_t  advrtr,
u_int  seqnum,
u_int16_t  sum,
u_int16_t  len,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_ospfv2_lsa_as u_int32_t  nmask,
u_int  metric,
u_int32_t  fwdaddr,
u_int  tag,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_ospfv2_lsa_net u_int32_t  nmask,
u_int  rtrid,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_ospfv2_lsa_rtr u_int16_t  flags,
u_int16_t  num,
u_int  id,
u_int  data,
u_int8_t  type,
u_int8_t  tos,
u_int16_t  metric,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_ospfv2_lsa_sum u_int32_t  nmask,
u_int  metric,
u_int  tos,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_ospfv2_lsr u_int  type,
u_int  lsid,
u_int32_t  advrtr,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_ospfv2_lsu u_int  num,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_rip u_int8_t  cmd,
u_int8_t  version,
u_int16_t  rd,
u_int16_t  af,
u_int16_t  rt,
u_int32_t  addr,
u_int32_t  mask,
u_int32_t  next_hop,
u_int32_t  metric,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_rpc_call u_int32_t  rm,
u_int32_t  xid,
u_int32_t  prog_num,
u_int32_t  prog_vers,
u_int32_t  procedure,
u_int32_t  cflavor,
u_int32_t  clength,
u_int8_t *  cdata,
u_int32_t  vflavor,
u_int32_t  vlength,
u_int8_t *  vdata,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_stp_conf u_int16_t  id,
u_int8_t  version,
u_int8_t  bpdu_type,
u_int8_t  flags,
u_int8_t *  root_id,
u_int32_t  root_pc,
u_int8_t *  bridge_id,
u_int16_t  port_id,
u_int16_t  message_age,
u_int16_t  max_age,
u_int16_t  hello_time,
u_int16_t  f_delay,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_stp_tcn u_int16_t  id,
u_int8_t  version,
u_int8_t  bpdu_type,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_tcp u_int16_t  sp,
u_int16_t  dp,
u_int32_t  seq,
u_int32_t  ack,
u_int8_t  control,
u_int16_t  win,
u_int16_t  sum,
u_int16_t  urg,
u_int16_t  len,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_tcp_options u_int8_t *  options,
u_int32_t  options_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_token_ring u_int8_t  ac,
u_int8_t  fc,
u_int8_t *  dst,
u_int8_t *  src,
u_int8_t  dsap,
u_int8_t  ssap,
u_int8_t  cf,
u_int8_t *  org,
u_int16_t  type,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_udp u_int16_t  sp,
u_int16_t  dp,
u_int16_t  len,
u_int16_t  sum,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

libnet_ptag_t libnet_build_vrrp u_int8_t  version,
u_int8_t  type,
u_int8_t  vrouter_id,
u_int8_t  priority,
u_int8_t  ip_count,
u_int8_t  auth_type,
u_int8_t  advert_int,
u_int16_t  sum,
u_int8_t *  payload,
u_int32_t  payload_s,
libnet_t *  l,
libnet_ptag_t  ptag
 

Parameters:
payload optional payload or NULL
payload_s payload length or 0
l pointer to a libnet context
ptag protocol tag to modify an existing header, 0 to build a new one
Returns:
protocol tag value on success, -1 on error

void libnet_clear_packet libnet_t *  l  ) 
 

Clears the current packet referenced and frees all pblocks. Should be called when the programmer want to send a completely new packet of a different type using the same context.

Parameters:
l pointer to a libnet context

void libnet_destroy libnet_t *  l  ) 
 

Shuts down the libnet session referenced by l. It closes the network interface and frees all internal memory structures associated with l.

Parameters:
l pointer to a libnet context

u_int32_t libnet_get_prand int  mod  ) 
 

Generates an unsigned psuedo-random value within the range specified by mod. LIBNET_PR2 0 - 1 LIBNET_PR8 0 - 255 LIBNET_PR16 0 - 32767 LIBNET_PRu16 0 - 65535 LIBNET_PR32 0 - 2147483647 LIBNET_PRu32 0 - 4294967295

Parameters:
mod one the of LIBNET_PR* constants
Returns:
1 on success, -1 on failure

int8_t* libnet_getdevice libnet_t *  l  ) 
 

Returns the canonical name of the device used for packet injection.

Parameters:
l pointer to a libnet context
Returns:
the canonical name of the device used for packet injection or NULL on error

char* libnet_geterror libnet_t *  l  ) 
 

Returns the last error set inside of the referenced libnet context. This function should be called anytime a function fails or an error condition is detected inside of libnet.

Parameters:
l pointer to a libnet context
Returns:
an error string or NULL if no error has occured

int libnet_getfd libnet_t *  l  ) 
 

Returns the FILENO of the file descriptor used for packet injection.

Parameters:
l pointer to a libnet context
Returns:
the file number of the file descriptor used for packet injection

u_int8_t* libnet_getpbuf libnet_t *  l,
libnet_ptag_t  ptag
 

Returns the pblock buffer contents for the specified ptag; a subsequent call to libnet_getpbuf_size() should be made to determine the size of the buffer.

Parameters:
l pointer to a libnet context
ptag the ptag reference number
Returns:
a pointer to the pblock buffer or NULL on error

u_int32_t libnet_getpbuf_size libnet_t *  l,
libnet_ptag_t  ptag
 

Returns the pblock buffer size for the specified ptag; a previous call to libnet_getpbuf() should be made to pull the actual buffer contents.

Parameters:
l pointer to a libnet context
ptag the ptag reference number
Returns:
the size of the pblock buffer

libnet_t* libnet_init int  injection_type,
char *  device,
char *  err_buf
 

Creates the libnet environment. It initializes the library and returns a libnet context. If the injection_type is LIBNET_LINK, the function initializes the injection primitives for the link-layer interface enabling the application programmer to build packets starting at the data-link layer (which also provides more granular control over the IP layer). If libnet uses the link-layer and the device argument is non-NULL, the function attempts to use the specified network device for packet injection. This is either a int16_t canonical string that references the device (such as "eth0" for a 100MB Ethernet card on Linux or "fxp0" for a 100MB Ethernet card on OpenBSD) or the dots and decimals representation of the device's IP address (192.168.0.1). If device is NULL, libnet attempts to find a suitable device to use. If the injection_type is LIBNET_RAW4, the function initializes the injection primitives for the IPv4 raw socket interface. The final argument, err_buf, should be a buffer of size LIBNET_ERRBUF_SIZE and holds an error message if the function fails. This function requires root privileges to execute successfully. Upon success, the function returns a valid libnet context for use in later function calls; upon failure, the function returns NULL.

Parameters:
injection_type packet injection type (Add these later)
device the interface to use (NULL and libnet will choose one)
err_buf will contain an error message on failure
Returns:
libnet context ready for use or NULL on error.

u_int32_t libnet_name2addr4 libnet_t *  l,
char *  host_name,
u_int8_t  use_name
 

Takes a dotted decimal string or a canonical DNS name and returns a network byte ordered IPv4 address. This may incur a DNS lookup if mode is set to LIBNET_RESOLVE and host_name refers to a canonical DNS name. If mode is set to LIBNET_DONT_RESOLVE no DNS lookup will occur. The function can fail if DNS lookup fails or if mode is set to LIBNET_DONT_RESOLVE and host_name refers to a canonical DNS name.

Parameters:
l pointer to a libnet context
host_name pointer to a string containing a presentation format host name
use_name LIBNET_RESOLVE or LIBNET_DONT_RESOLVE
Returns:
network byte ordered IPv4 address or -1 (2^32 - 1) on error

struct libnet_in6_addr libnet_name2addr6 libnet_t *  l,
char *  host_name,
u_int8_t  use_name
 

Takes a dotted decimal string or a canonical DNS name and returns a network byte ordered IPv6 address. This may incur a DNS lookup if mode is set to LIBNET_RESOLVE and host_name refers to a canonical DNS name. If mode is set to LIBNET_DONT_RESOLVE no DNS lookup will occur. The function can fail if DNS lookup fails or if mode is set to LIBNET_DONT_RESOLVE and host_name refers to a canonical DNS name.

Parameters:
l pointer to a libnet context
host_name pointer to a string containing a presentation format host name
use_name LIBNET_RESOLVE or LIBNET_DONT_RESOLVE
Returns:
network byte ordered IPv6 address structure

int libnet_plist_chain_dump libnet_plist_t *  plist  ) 
 

Runs through the port list and prints the contents of the port list chain list to stdout.

Parameters:
plist previously created portlist
Returns:
1 on success, -1 on failure

char* libnet_plist_chain_dump_string libnet_plist_t *  plist  ) 
 

Runs through the port list and prints the contents of the port list chain list to string. This function uses strdup and is not re-entrant. It also has a memory leak and should not really be used.

Parameters:
plist previously created portlist
Returns:
a printable string containing the port list contents on success NULL on error

int libnet_plist_chain_free libnet_plist_t *  plist  ) 
 

Frees all memory associated with port list chain.

Parameters:
plist previously created portlist
Returns:
1 on success, -1 on failure

int libnet_plist_chain_new libnet_t *  l,
libnet_plist_t **  plist,
char *  token_list
 

Creates a new port list. Port list chains are useful for TCP and UDP-based applications that need to send packets to a range of ports (contiguous or otherwise). The port list chain, which token_list points to, should contain a series of int8_tacters from the following list: "0123456789,-" of the general format "x - y, z", where "xyz" are port numbers between 0 and 65,535. plist points to the front of the port list chain list for use in further libnet_plist_chain() functions. Upon success, the function returns 1. Upon failure, the function returns -1 and libnet_geterror() can tell you why.

Parameters:
l pointer to a libnet context
plist if successful, will refer to the portlist, if not, NULL
token_list string containing the port list primitive
Returns:
1 on success, -1 on failure

int libnet_plist_chain_next_pair libnet_plist_t *  plist,
u_int16_t *  bport,
u_int16_t *  eport
 

Returns the next port list chain pair from the port list chain plist. bport and eport contain the starting port number and ending port number, respectively. Upon success, the function returns 1 and fills in the port variables; however, if the list is empty, the function returns 0 and sets both port variables to 0. Upon failure, the function returns -1.

Parameters:
plist previously created portlist
bport will contain the beginning port number or 0
eport will contain the ending port number or 0
Returns:
1 on success, 0 if empty, -1 on failure

int libnet_seed_prand libnet_t *  l  ) 
 

Seeds the psuedo-random number generator.

Parameters:
l pointer to a libnet context
Returns:
1 on success, -1 on failure

void libnet_stats libnet_t *  l,
struct libnet_stats *  ls
 

Fills in a libnet_stats structure with packet injection statistics (packets written, bytes written, packet sending errors).

Parameters:
l pointer to a libnet context
ls pointer to a libnet statistics structure

int libnet_toggle_checksum libnet_t *  l,
libnet_ptag_t  ptag,
int  mode
 

If a given protocol header is built with the checksum field set to "0", by default libnet will calculate the header checksum prior to injection. If the header is set to any other value, by default libnet will not calculate the header checksum. To over-ride this behavior, use libnet_toggle_checksum(). Switches auto-checksumming on or off for the specified ptag. If mode is set to LIBNET_ON, libnet will mark the specificed ptag to calculate a checksum for the ptag prior to injection. This assumes that the ptag refers to a protocol that has a checksum field. If mode is set to LIBNET_OFF, libnet will clear the checksum flag and no checksum will be computed prior to injection. This assumes that the programmer will assign a value (zero or otherwise) to the checksum field. Often times this is useful if a precomputed checksum or some other predefined value is going to be used. Note that when libnet is initialized with LIBNET_RAW4, the IPv4 header checksum will always be computed by the kernel prior to injection, regardless of what the programmer sets.

Parameters:
l pointer to a libnet context
ptag the ptag reference number
mode LIBNET_ON or LIBNET_OFF
Returns:
1 on success, -1 on failure


Generated on Wed Nov 12 09:57:56 2003 for libnet by doxygen 1.3.2