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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) |
| u_int32_t | libnet_getpacket_size (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_build_ipv6_frag (u_int8_t nh, u_int8_t reserved, u_int16_t frag, u_int32_t id, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag) |
| libnet_ptag_t | libnet_build_ipv6_routing (u_int8_t nh, u_int8_t len, u_int8_t rtype, u_int8_t segments, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag) |
| libnet_ptag_t | libnet_build_ipv6_destopts (u_int8_t nh, u_int8_t len, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag) |
| libnet_ptag_t | libnet_build_ipv6_hbhopts (u_int8_t nh, u_int8_t len, 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 nh, 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 nh, 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_getgre_length (u_int16_t fv) |
| libnet_ptag_t | libnet_build_gre (u_int16_t fv, u_int16_t type, u_int16_t sum, 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_egre (u_int16_t fv, u_int16_t type, u_int16_t sum, 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_sebek (u_int32_t magic, u_int16_t version, u_int16_t type, u_int32_t counter, u_int32_t time_sec, u_int32_t time_usec, u_int32_t pid, u_int32_t uid, u_int32_t fd, u_int8_t cmd[SEBEK_CMD_LENGTH], u_int32_t length, 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_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_autobuild_link (u_int8_t *dst, u_int8_t *oui, u_int16_t type, libnet_t *l) |
| int | libnet_write (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) |
| 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) |
| void | libnet_adv_free_packet (libnet_t *l, u_int8_t *packet) |
| int | libnet_cq_add (libnet_t *l, char *label) |
| libnet_t * | libnet_cq_remove (libnet_t *l) |
| libnet_t * | 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 () |
| void | libnet_diag_dump_context (libnet_t *l) |
| void | libnet_diag_dump_pblock (libnet_t *l) |
| char * | libnet_diag_dump_pblock_type (u_int8_t type) |
| void | libnet_diag_dump_hex (u_int8_t *packet, u_int32_t len, int swap, FILE *stream) |
| 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) |
| 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) |
| int | libnet_check_iface (libnet_t *l) |
Variables | |
| const struct libnet_in6_addr | in6addr_error |
|
||||||||||||
|
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.
|
|
||||||||||||||||||||
|
Should document this baby right here. |
|
||||||||||||||||||||
|
[Advanced Interface] Pulls the header from the specified ptag from the given libnet context. This function is part of the advanced interface and is only available when libnet is initialized in advanced mode. If the function fails libnet_geterror() can tell you why.
|
|
||||||||||||||||
|
[Advanced Interface] Yanks a prebuilt, wire-ready packet from the given libnet context. If libnet was configured to do so (which it is by default) the packet will have all checksums written in. This function is part of the advanced interface and is only available when libnet is initialized in advanced mode. It is important to note that the function performs an implicit malloc() and a corresponding call to libnet_adv_free_packet() should be made to free the memory packet occupies. If the function fails libnet_geterror() can tell you why.
|
|
||||||||||||
|
[Advanced Interface] Frees the memory allocated when libnet_adv_cull_packet() is called.
|
|
||||||||||||||||
|
[Advanced Interface] Writes a packet the network at the link layer. This function is useful to write a packet that has been constructed by hand by the application programmer or, more commonly, to write a packet that has been returned by a call to libnet_adv_cull_packet(). This function is part of the advanced interface and is only available when libnet is initialized in advanced mode. If the function fails libnet_geterror() can tell you why.
|
|
||||||||||||||||||||||||||||
|
Autouilds an Address Resolution Protocol (ARP) header. Depending on the op value, the function builds one of several different types of RFC 826 or RFC 903 RARP packets.
|
|
||||||||||||||||
|
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.
|
|
||||||||||||||||||||||||||||||||||||
|
Autobuilds a Fiber Distributed Data Interface (FDDI) header.
|
|
||||||||||||||||||||
|
Autobuilds a version 4 Internet Protocol (IP) header. The function is useful * to build an IP header quickly when you do not need a granular level of control. The function takes the same len, prot, and dst arguments as libnet_build_ipv4(). The function does not accept a ptag argument, but it does return a ptag. In other words, you can use it to build a new IP header but not to modify an existing one.
|
|
||||||||||||||||||||
|
This function is not yet implement and is a NONOP.
|
|
||||||||||||||||||||
|
Automatically builds a link layer header for an initialized l. The function determines the proper link layer header format from how l was initialized. The function current supports Ethernet and Token Ring link layers.
|
|
||||||||||||||||||||||||||||||||||||||||
|
Auto-builds a token ring header.
|
|
||||||||||||||||||||||||||||||||||||||||||||||||
|
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.
|
|
||||||||||||||||||||||||||||||||
|
Builds an IEEE 802.1x extended authentication protocol header.
|
|
||||||||||||||||||||||||||||||||
|
Builds an IEEE 802.2 LLC header.
|
|
||||||||||||||||||||||||||||||||||||||||
|
Builds an IEEE 802.2 LLC SNAP header.
|
|
||||||||||||||||||||||||||||||||
|
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.
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Builds an Address Resolution Protocol (ARP) header. Depending on the op value, the function builds one of several different types of RFC 826 or RFC 903 RARP packets.
|
|
||||||||||||||||||||||||||||||||
|
Builds an RFC 1771 Border Gateway Protocol 4 (BGP-4) header. The primary function of a BGP speaking system is to exchange network reachability information with other BGP systems. This network reachability information includes information on the list of Autonomous Systems (ASs) that reachability information traverses. This information is sufficient to construct a graph of AS connectivity from which routing loops may be pruned and some policy decisions at the AS level may be enforced. This function builds the base BGP header which is used as a preamble before any other BGP header. For example, a BGP KEEPALIVE message may be built with only this function, while an error notification requires a subsequent call to libnet_build_bgp4_notification.
|
|
||||||||||||||||||||||||||||
|
Builds an RFC 1771 Border Gateway Protocol 4 (BGP-4) notification header. A NOTIFICATION message is sent when an error condition is detected. Specific error information may be passed through the payload interface.
|
|
||||||||||||||||||||||||||||||||||||||||
|
Builds an RFC 1771 Border Gateway Protocol 4 (BGP-4) OPEN header. This is the first message sent by each side of a BGP connection. The optional parameters options should be constructed using the payload interface (see RFC 1771 for the options structures).
|
|
||||||||||||||||||||||||||||||||||||||||||||
|
Builds an RFC 1771 Border Gateway Protocol 4 (BGP-4) update header. Update messages are used to transfer routing information between BGP peers.
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
|
||||||||||||||||||||||||||||||||||||||||||||
|
Builds a Cisco Discovery Protocol (CDP) header. Cisco Systems designed CDP to aid in the network management of adjacent Cisco devices. The CDP protocol specifies data by using a type/length/value (TLV) setup. The first TLV can specified by using the functions type, length, and value arguments. To specify additional TLVs, the programmer could either use the payload interface or libnet_build_data() to construct them.
|
|
||||||||||||||||||||
|
Builds a generic libnet protocol header. This is useful for including an optional payload to a packet that might need to change repeatedly inside of a loop.
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
|
||||||||||||||||||||||||||||||||||||||||||||||||
|
Builds an RFC 1035 version 4 DNS header. Additional DNS payload information should be specified using the payload interface.
|
|
||||||||||||||||||||||||||||||||||||||||||||||||
|
Generic Routing Encapsulation (GRE - RFC 1701) is used to encapsulate any protocol. Hence, the IP part of the packet is usually referred as "delivery header". It is then followed by the GRE header and finally the encapsulated packet (IP or whatever). As GRE is very modular, the first GRE header describes the structure of the header, using bits and flag to specify which fields will be present in the header.
|
|
||||||||||||||||||||||||||||||||
|
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.
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Builds a Fiber Distributed Data Interface (FDDI) header.
|
|
||||||||||||||||||||||||||||||||||||||||||||||||
|
Generic Routing Encapsulation (GRE - RFC 1701) is used to encapsulate any protocol. Hence, the IP part of the packet is usually referred as "delivery header". It is then followed by the GRE header and finally the encapsulated packet (IP or whatever). As GRE is very modular, the first GRE header describes the structure of the header, using bits and flag to specify which fields will be present in the header.
|
|
||||||||||||
|
|
|
||||||||||||||||||||||||||||||||||||
|
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|
||||||||||||||||||||||||||||||||||||||||
|
Builds an IP version 4 RFC 792 Internet Control Message Protocol (ICMP) echo request/reply header
|
|
||||||||||||||||||||||||||||||||||||||||||||
|
Builds an IP version 4 RFC 792 Internet Control Message Protocol (ICMP) IP netmask request/reply header.
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Builds an IP version 4 RFC 792 Internet Message Control Protocol (ICMP) redirect header. The additional arguments enable the application programmer to easily specify the original IP header values (the IP header of the packet that supposedly caused the ICMP redirect message in the first place).
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Builds an IP version 4 RFC 792 Internet Control Message Protocol (ICMP) time exceeded header. The additional arguments enable the application programmer to easily specify the original IPv4 header values (the IP header of the packet that supposedly caused the ICMP time exceeded message in the first place).
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|
||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Builds an IP version 4 RFC 792 Internet Control Message Protocol (ICMP) timestamp request/reply header.
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Builds an IP version 4 RFC 792 Internet Control Message Protocol (ICMP) unreachable header. The additional arguments enable the application programmer to easily specify the original IPv4 header values (the IP header of the packet that supposedly caused the ICMP unreachable message in the first place).
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|
||||||||||||||||||||||||||||||||||||
|
Builds an RFC 1112 Internet Group Memebership Protocol (IGMP) header.
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|
||||||||||||||||||||||||||||||||||||||||||||
|
Builds an Internet Protocol Security Authentication header.
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|
||||||||||||||||||||||||||||||||
|
Builds an Internet Protocol Security Encapsulating Security Payload footer.
|
|
||||||||||||||||||||||||||||||||
|
Builds an Internet Protocol Security Encapsulating Security Payload header.
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Builds a version 4 RFC 791 Internet Protocol (IP) header.
|
|
||||||||||||||||||||
|
Builds an version 4 Internet Protocol (IP) options header. The function expects options to be a valid IP options string of size options_s, no larger than 40 bytes (the maximum size of an options string). The function checks to make sure that the preceding header is an IPv4 header and that the options string would not result in a packet larger than 65,535 bytes (IPMAXPACKET). The function counts up the number of 32-bit words in the options string and adjusts the IP header length value as necessary.
|
|
||||||||||||||||||||||||||||||||||||||||||||||||
|
Builds a version 6 RFC 2460 Internet Protocol (IP) header.
|
|
||||||||||||||||||||||||||||
|
Builds a version 6 RFC 2460 Internet Protocol (IP) destination options header. This function is special in that it uses the payload interface to include the options data. The application programmer will build an IPv6 options byte string and pass it to the function using the payload interface.
|
|
||||||||||||||||||||||||||||||||||||
|
Builds a version 6 RFC 2460 Internet Protocol (IP) fragmentation header.
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|
||||||||||||||||||||||||||||
|
Builds a version 6 RFC 2460 Internet Protocol (IP) hop by hop options header. This function is special in that it uses the payload interface to include the options data. The application programmer will build an IPv6 hop by hop options byte string and pass it to the function using the payload interface.
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|
||||||||||||||||||||||||||||||||||||
|
Builds a version 6 RFC 2460 Internet Protocol (IP) routing header. This function is special in that it uses the payload interface to include the "type-specific data"; that is the routing information. Most often this will be a number of 128-bit IPv6 addresses. The application programmer will build a byte string of IPv6 address and pass them to the function using the payload interface.
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Builds a Cisco Inter-Switch Link (ISL) header.
|
|
||||||||||||||||||||||||||||||||||||
|
Builds a link layer header for an initialized l. The function determines the proper link layer header format from how l was initialized. The function current supports Ethernet and Token Ring link layers.
|
|
||||||||||||||||||||||||||||||||||||
|
Builds an RFC 3032 Multi-Protocol Label Switching (MPLS) header.
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Builds an RFC 958 Network Time Protocol (NTP) header.
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|
||||||||||||||||||||||||||||||||||||||||||||
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|
||||||||||||||||||||||||||||||||||||
|
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|
||||||||||||||||||||||||||||||||||||||||||||||||||||
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|
||||||||||||||||||||||||||||||||||||||||||||||||||||
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|
||||||||||||||||||||||||||||||||||||
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|
||||||||||||||||||||||||||||
|
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|
||||||||||||||||||||||||||||||||||||||||||||||||
|
|
|
||||||||||||||||||||||||||||||||
|
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|
||||||||||||||||||||||||||||||||
|
|
|
||||||||||||||||||||||||
|
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|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Builds a Routing Information Protocol header (RFCs 1058 and 2453).
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Builds an Remote Procedure Call (Version 2) Call message header as specified in RFC 1831. This builder provides the option for specifying the record marking which is required when used with streaming protocols (TCP).
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Builds a Sebek header. The Sebek protocol was designed by the Honeynet Project as a transport mechanism for post-intrusion forensic data. More information may be found here: http://www.honeynet.org/papers/sebek.pdf.
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Builds an IEEE 802.1d Spanning Tree Protocol (STP) configuration header. STP frames are usually encapsulated inside of an 802.2 + 802.3 frame combination.
|
|
||||||||||||||||||||||||||||||||
|
Builds an IEEE 802.1d Spanning Tree Protocol (STP) topology change notification header. STP frames are usually encapsulated inside of an 802.2 + 802.3 frame combination.
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Builds an RFC 793 Transmission Control Protocol (TCP) header.
|
|
||||||||||||||||||||
|
Builds an RFC 793 Transmission Control Protocol (TCP) options header. The function expects options to be a valid TCP options string of size options_s, which is no larger than 40 bytes (the maximum size of an options string). The function checks to ensure that the packet consists of a TCP header preceded by an IPv4 header, and that the addition of the options string would not result in a packet larger than 65,535 bytes (IPMAXPACKET). The function counts up the number of 32-bit words in the options string and adjusts the TCP header length value as necessary.
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Builds a token ring header.
|
|
||||||||||||||||||||||||||||||||||||
|
Builds an RFC 768 User Datagram Protocol (UDP) header.
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Builds an RFC 2338 Virtual Router Redundacy Protool (VRRP) header. Use the payload interface to specify address and autthentication information. To build a "legal" packet, the destination IPv4 address should be the multicast * address 224.0.0.18, the IP TTL should be set to 255, and the IP protocol should be set to 112.
|
|
|
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.
|
|
||||||||||||
|
[Context Queue] Adds a new context to the libnet context queue. If no queue exists, this function will create the queue and add the specified libnet context as the first entry on the list. The functions checks to ensure niether l nor label are NULL, and that label doesn't refer to an existing context already in the queue. Additionally, l should refer to a libnet context previously initialized with a call to libnet_init(). If the context queue in write locked, this function will fail.
|
|
|
[Context Queue] Destroys the entire context queue, calling libnet_destroy() on each member context. |
|
|
[Context Queue] Locates a libnet context from the queue, indexed by a canonical label.
|
|
|
[Context Queue] Returns the canonical label associated with the context.
|
|
|
[Context Queue] Intiailizes the interator interface and set a write lock on the entire queue. This function is intended to be called just prior to interating through the entire list of contexts (with the probable intent of inject a series of packets in rapid succession). This function is often used as per the following: for (l = libnet_cq_head(); libnet_cq_last(); l = libnet_cq_next()) { ... } Much of the time, the application programmer will use the iterator as it is written above; as such, libnet provides a macro to do exactly that, for_each_context_in_cq(l). Warning: do not call the iterator more than once in a single loop.
|
|
|
[Context Queue] Check whether the iterator is at the last context in the queue.
|
|
|
[Context Queue] Get next context from the context queue. the next context from the context queue |
|
|
[Context Queue] Removes a specified context from the libnet context queue by specifying the libnet context pointer. Note the function will remove the specified context from the context queue and cleanup internal memory from the queue, it is up to the application programmer to free the returned libnet context with a call to libnet_destroy(). Also, as it is not necessary to keep the libnet context pointer when initially adding it to the context queue, most application programmers will prefer to refer to entries on the context queue by canonical name and would use libnet_cq_remove_by_label(). If the context queue is write locked, this function will fail.
|
|
|
[Context Queue] Removes a specified context from the libnet context queue by specifying the canonical name. Note the function will remove the specified context from the context queue and cleanup internal memory from the queue, it is up to the application programmer to free the returned libnet context with a call to libnet_destroy(). If the context queue is write locked, this function will fail.
|
|
|
[Context Queue] Function returns the number of libnet contexts that are in the queue.
|
|
|
Shuts down the libnet session referenced by l. It closes the network interface and frees all internal memory structures associated with l.
|
|
|
[Diagnostic] Prints the contents of the given context.
|
|
||||||||||||||||||||
|
[Diagnostic] Function prints the contents of the supplied buffer to the supplied stream pointer. Will swap endianness based disposition of mode variable. Useful to be used in conjunction with the advanced interface and a culled packet.
|
|
|
[Diagnostic] Prints the contents of every pblock.
|
|
|
[Diagnostic] Returns the canonical name of the pblock type.
|
|
|
Returns the MAC address for the device libnet was initialized with. If libnet was initialized without a device the function will attempt to find one. If the function fails and returns NULL a call to libnet_geterror() will tell you why.
|
|
|
Returns the IP address for the device libnet was initialized with. If libnet was initialized without a device (in raw socket mode) the function will attempt to find one. If the function fails and returns -1 a call to libnet_geterrror() will tell you why.
|
|
|
This function is not yet implemented under IPv6.
|
|
|
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
|
|
|
Returns the canonical name of the device used for packet injection.
|
|
|
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.
|
|
|
Returns the FILENO of the file descriptor used for packet injection.
|
|
|
|
|
|
Returns the sum of the size of all of the pblocks inside of l (this should be the resuling packet size).
|
|
||||||||||||
|
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.
|
|
||||||||||||
|
Returns the pblock buffer size for the specified ptag; a previous call to libnet_getpbuf() should be made to pull the actual buffer contents.
|
|
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Takes a colon separated hexidecimal address (from the command line) and returns a bytestring suitable for use in a libnet_build function. Note this function performs an implicit malloc and the return value should be freed after its use.
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Creates the libnet environment. It initializes the library and returns a libnet context. If the injection_type is LIBNET_LINK or LIBNET_LINK_ADV, 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 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 or LIBNET_RAW4_ADV, 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.
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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.
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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.
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Runs through the port list and prints the contents of the port list chain list to stdout.
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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.
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Frees all memory associated with port list chain.
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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.
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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.
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Seeds the psuedo-random number generator.
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Fills in a libnet_stats structure with packet injection statistics (packets written, bytes written, packet sending errors).
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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.
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Writes a prebuilt packet to the network. The function assumes that l was previously initialized (via a call to libnet_init()) and that a previously constructed packet has been built inside this context (via one or more calls to the libnet_build* family of functions) and is ready to go. Depending on how libnet was initialized, the function will write the packet to the wire either via the raw or link layer interface. The function will also bump up the internal libnet stat counters which are retrievable via libnet_stats().
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1.3.4