/* * netsniff-ng - the packet sniffing beast * Copyright 2009, 2010 Daniel Borkmann. * Subject to the GPL, version 2. */ #include #include "hash.h" #include "oui.h" #include "str.h" #include "protos.h" #include "pkt_buff.h" #include "dissector.h" #include "dissector_eth.h" #include "xmalloc.h" struct hash_table eth_lay2; struct hash_table eth_lay3; static struct hash_table eth_ether_types; static struct hash_table eth_ports_udp; static struct hash_table eth_ports_tcp; struct port { unsigned int id; char *port; struct port *next; }; #define __do_lookup_inline(id, struct_name, hash_ptr, struct_member) \ ({ \ struct struct_name *entry = lookup_hash(id, hash_ptr); \ \ while (entry && id != entry->id) \ entry = entry->next; \ \ (entry && id == entry->id ? entry->struct_member : 0); \ }) char *lookup_port_udp(unsigned int id) { return __do_lookup_inline(id, port, ð_ports_udp, port); } char *lookup_port_tcp(unsigned int id) { return __do_lookup_inline(id, port, ð_ports_tcp, port); } char *lookup_ether_type(unsigned int id) { return __do_lookup_inline(id, port, ð_ether_types, port); } #ifdef __WITH_PROTOS static inline void dissector_init_entry(int type) { dissector_set_print_type(ðernet_ops, type); } static inline void dissector_init_exit(int type) { dissector_set_print_type(&none_ops, type); } static void dissector_init_layer_2(int type) { init_hash(ð_lay2); INSERT_HASH_PROTOS(arp_ops, eth_lay2); INSERT_HASH_PROTOS(lldp_ops, eth_lay2); INSERT_HASH_PROTOS(vlan_ops, eth_lay2); INSERT_HASH_PROTOS(ipv4_ops, eth_lay2); INSERT_HASH_PROTOS(ipv6_ops, eth_lay2); INSERT_HASH_PROTOS(QinQ_ops, eth_lay2); INSERT_HASH_PROTOS(mpls_uc_ops, eth_lay2); for_each_hash_int(ð_lay2, dissector_set_print_type, type); } static void dissector_init_layer_3(int type) { init_hash(ð_lay3); INSERT_HASH_PROTOS(icmpv4_ops, eth_lay3); INSERT_HASH_PROTOS(icmpv6_ops, eth_lay3); INSERT_HASH_PROTOS(igmp_ops, eth_lay3); INSERT_HASH_PROTOS(ip_auth_ops, eth_lay3); INSERT_HASH_PROTOS(ip_esp_ops, eth_lay3); INSERT_HASH_PROTOS(ipv6_dest_opts_ops, eth_lay3); INSERT_HASH_PROTOS(ipv6_fragm_ops, eth_lay3); INSERT_HASH_PROTOS(ipv6_hop_by_hop_ops, eth_lay3); INSERT_HASH_PROTOS(ipv6_in_ipv4_ops, eth_lay3); INSERT_HASH_PROTOS(ipv6_mobility_ops, eth_lay3); INSERT_HASH_PROTOS(ipv6_no_next_header_ops, eth_lay3); INSERT_HASH_PROTOS(ipv6_routing_ops, eth_lay3); INSERT_HASH_PROTOS(tcp_ops, eth_lay3); INSERT_HASH_PROTOS(udp_ops, eth_lay3); for_each_hash_int(ð_lay3, dissector_set_print_type, type); } #else static inline void dissector_init_entry(int type) {} static inline void dissector_init_exit(int type) {} static void dissector_init_layer_2(int type) {} static void dissector_init_layer_3(int type) {} #endif /* __WITH_PROTOS */ enum ports { PORTS_UDP, PORTS_TCP, PORTS_ETHER, }; static void dissector_init_ports(enum ports which) { FILE *fp; char buff[128], *ptr, *file, *end; struct hash_table *table; struct port *p; void **pos; switch (which) { case PORTS_UDP: file = PREFIX_STRING "/etc/netsniff-ng/udp.conf"; table = ð_ports_udp; break; case PORTS_TCP: file = PREFIX_STRING "/etc/netsniff-ng/tcp.conf"; table = ð_ports_tcp; break; case PORTS_ETHER: file = PREFIX_STRING "/etc/netsniff-ng/ether.conf"; table = ð_ether_types; break; default: bug(); } fp = fopen(file, "r"); if (!fp) panic("No %s found!\n", file); memset(buff, 0, sizeof(buff)); while (fgets(buff, sizeof(buff), fp) != NULL) { buff[sizeof(buff) - 1] = 0; ptr = buff; p = xmalloc(sizeof(*p)); p->id = strtol(ptr, &end, 0); /* not a valid line, skip */ if (p->id == 0 && end == ptr) { xfree(p); continue; } ptr = strstr(buff, ", "); /* likewise */ if (!ptr) { xfree(p); continue; } ptr += strlen(", "); ptr = strtrim_right(ptr, '\n'); ptr = strtrim_right(ptr, ' '); p->port = xstrdup(ptr); p->next = NULL; pos = insert_hash(p->id, p, table); if (pos) { p->next = *pos; *pos = p; } memset(buff, 0, sizeof(buff)); } fclose(fp); } static int dissector_cleanup_ports(void *ptr) { struct port *tmp, *p = ptr; if (!ptr) return 0; while ((tmp = p->next)) { xfree(p->port); xfree(p); p = tmp; } xfree(p->port); xfree(p); return 0; } void dissector_init_ethernet(int fnttype) { dissector_init_entry(fnttype); dissector_init_layer_2(fnttype); dissector_init_layer_3(fnttype); dissector_init_exit(fnttype); #ifdef __WITH_PROTOS dissector_init_oui(); #endif dissector_init_ports(PORTS_UDP); dissector_init_ports(PORTS_TCP); dissector_init_ports(PORTS_ETHER); } void dissector_cleanup_ethernet(void) { free_hash(ð_lay2); free_hash(ð_lay3); for_each_hash(ð_ether_types, dissector_cleanup_ports); for_each_hash(ð_ports_udp, dissector_cleanup_ports); for_each_hash(ð_ports_tcp, dissector_cleanup_ports); free_hash(ð_ether_types); free_hash(ð_ports_udp); free_hash(ð_ports_tcp); #ifdef __WITH_PROTOS dissector_cleanup_oui(); #endif } 0b9080b646b9bd470d'>plain -rw-r--r--ad1843.h1516logplain -rw-r--r--adau1373.h699logplain -rw-r--r--aess.h1668logplain -rw-r--r--ak4113.h11112logplain -rw-r--r--ak4114.h10424logplain -rw-r--r--ak4117.h9193logplain -rw-r--r--ak4531_codec.h3173logplain -rw-r--r--ak4641.h622logplain -rw-r--r--ak4xxx-adda.h3416logplain -rw-r--r--alc5623.h497logplain -rw-r--r--asequencer.h3670logplain -rw-r--r--asound.h1285logplain -rw-r--r--asoundef.h17098logplain -rw-r--r--atmel-abdac.h639logplain -rw-r--r--atmel-ac97c.h1342logplain -rw-r--r--compress_driver.h6772logplain -rw-r--r--control.h8704logplain -rw-r--r--core.h14380logplain -rw-r--r--cs35l33.h1034logplain -rw-r--r--cs35l34.h887logplain -rw-r--r--cs4231-regs.h8480logplain -rw-r--r--cs4271.h1417logplain -rw-r--r--cs42l52.h738logplain -rw-r--r--cs42l56.h1192logplain -rw-r--r--cs42l73.h507logplain -rw-r--r--cs8403.h8833logplain -rw-r--r--cs8427.h10649logplain -rw-r--r--da7213.h1178logplain -rw-r--r--da7218.h2681logplain -rw-r--r--da7219-aad.h2476logplain -rw-r--r--da7219.h1064logplain -rw-r--r--da9055.h914logplain -rw-r--r--designware_i2s.h2249logplain -rw-r--r--dmaengine_pcm.h6157logplain -rw-r--r--emu10k1.h91396logplain -rw-r--r--emu10k1_synth.h1382logplain -rw-r--r--emu8000.h4109logplain -rw-r--r--emu8000_reg.h10459logplain -rw-r--r--emux_legacy.h5503logplain -rw-r--r--emux_synth.h7649logplain -rw-r--r--es1688.h3618logplain -rw-r--r--gus.h20691logplain -rw-r--r--hda_chmap.h2621logplain -rw-r--r--hda_hwdep.h1412logplain -rw-r--r--hda_i915.h1645logplain -rw-r--r--hda_register.h9475logplain -rw-r--r--hda_regmap.h6714logplain -rw-r--r--hda_verbs.h17130logplain -rw-r--r--hdaudio.h18455logplain -rw-r--r--hdaudio_ext.h7119logplain -rw-r--r--hdmi-codec.h2290logplain -rw-r--r--hwdep.h2624logplain -rw-r--r--i2c.h3555logplain -rw-r--r--info.h7584logplain