void my_sigint_handler(int signum) { struct plugins_list_entry *list = plugins_list; if (config.syslog) closelog(); /* We are about to exit, but it may take a while - because of the wait() call. Let's release collector's socket to improve turn- around times when restarting the daemon */ if (config.acct_type == ACCT_NF || config.acct_type == ACCT_SF) close(config.sock); #if defined (IRIX) || (SOLARIS) signal(SIGCHLD, SIG_IGN); #else signal(SIGCHLD, ignore_falling_child); #endif signal(SIGINT, SIG_IGN); signal(SIGTERM, SIG_IGN); fill_pipe_buffer(); sleep(2); /* XXX: we should really choose an adaptive value here. It should be closely bound to, say, biggest plugin_buffer_size value */ while (list) { if (memcmp(list->type.string, "core", sizeof("core"))) kill(list->pid, SIGINT); list = list->next; } wait(NULL); Log(LOG_INFO, "INFO ( %s/%s ): OK, Exiting ...\n", config.name, config.type); if (config.acct_type == ACCT_PM && !config.uacctd_group /* XXX */) { if (config.dev) { if (pcap_stats(glob_pcapt, &ps) < 0) printf("\npcap_stats: %s\n", pcap_geterr(glob_pcapt)); printf("\n"); printf("%u packets received by filter\n", ps.ps_recv); printf("%u packets dropped by kernel\n", ps.ps_drop); } } if (config.pidfile) remove_pid_file(config.pidfile); exit(0); }
int main(int argc,char **argv, char **envp) { bpf_u_int32 localnet, netmask; /* pcap library stuff */ struct bpf_program filter; struct pcap_device device; char errbuf[PCAP_ERRBUF_SIZE]; int index, logf; struct plugins_list_entry *list; struct plugin_requests req; char config_file[SRVBUFLEN]; int psize = DEFAULT_SNAPLEN; struct id_table bpas_table; struct id_table blp_table; struct id_table bmed_table; struct id_table biss_table; struct id_table bta_table; struct id_table idt; struct pcap_callback_data cb_data; /* getopt() stuff */ extern char *optarg; extern int optind, opterr, optopt; int errflag, cp; #if defined ENABLE_IPV6 struct sockaddr_storage client; #else struct sockaddr client; #endif umask(077); compute_once(); /* a bunch of default definitions */ have_num_memory_pools = FALSE; reload_map = FALSE; tag_map_allocated = FALSE; bpas_map_allocated = FALSE; blp_map_allocated = FALSE; bmed_map_allocated = FALSE; biss_map_allocated = FALSE; find_id_func = PM_find_id; errflag = 0; memset(cfg_cmdline, 0, sizeof(cfg_cmdline)); memset(&config, 0, sizeof(struct configuration)); memset(&device, 0, sizeof(struct pcap_device)); memset(&config_file, 0, sizeof(config_file)); memset(&failed_plugins, 0, sizeof(failed_plugins)); memset(&req, 0, sizeof(req)); memset(dummy_tlhdr, 0, sizeof(dummy_tlhdr)); memset(sll_mac, 0, sizeof(sll_mac)); memset(&bpas_table, 0, sizeof(bpas_table)); memset(&blp_table, 0, sizeof(blp_table)); memset(&bmed_table, 0, sizeof(bmed_table)); memset(&biss_table, 0, sizeof(biss_table)); memset(&bta_table, 0, sizeof(bta_table)); memset(&client, 0, sizeof(client)); memset(&cb_data, 0, sizeof(cb_data)); memset(&tunnel_registry, 0, sizeof(tunnel_registry)); config.acct_type = ACCT_PM; rows = 0; glob_pcapt = NULL; /* getting commandline values */ while (!errflag && ((cp = getopt(argc, argv, ARGS_PMACCTD)) != -1)) { cfg_cmdline[rows] = malloc(SRVBUFLEN); switch (cp) { case 'P': strlcpy(cfg_cmdline[rows], "plugins: ", SRVBUFLEN); strncat(cfg_cmdline[rows], optarg, CFG_LINE_LEN(cfg_cmdline[rows])); rows++; break; case 'D': strlcpy(cfg_cmdline[rows], "daemonize: true", SRVBUFLEN); rows++; break; case 'd': debug = TRUE; strlcpy(cfg_cmdline[rows], "debug: true", SRVBUFLEN); rows++; break; case 'n': strlcpy(cfg_cmdline[rows], "networks_file: ", SRVBUFLEN); strncat(cfg_cmdline[rows], optarg, CFG_LINE_LEN(cfg_cmdline[rows])); rows++; break; case 'o': strlcpy(cfg_cmdline[rows], "ports_file: ", SRVBUFLEN); strncat(cfg_cmdline[rows], optarg, CFG_LINE_LEN(cfg_cmdline[rows])); rows++; break; case 'O': strlcpy(cfg_cmdline[rows], "print_output: ", SRVBUFLEN); strncat(cfg_cmdline[rows], optarg, CFG_LINE_LEN(cfg_cmdline[rows])); rows++; break; case 'u': strlcpy(cfg_cmdline[rows], "print_num_protos: true", SRVBUFLEN); rows++; break; case 'N': strlcpy(cfg_cmdline[rows], "promisc: false", SRVBUFLEN); rows++; break; case 'f': strlcpy(config_file, optarg, sizeof(config_file)); break; case 'F': strlcpy(cfg_cmdline[rows], "pidfile: ", SRVBUFLEN); strncat(cfg_cmdline[rows], optarg, CFG_LINE_LEN(cfg_cmdline[rows])); rows++; break; case 'c': strlcpy(cfg_cmdline[rows], "aggregate: ", SRVBUFLEN); strncat(cfg_cmdline[rows], optarg, CFG_LINE_LEN(cfg_cmdline[rows])); rows++; break; case 'b': strlcpy(cfg_cmdline[rows], "imt_buckets: ", SRVBUFLEN); strncat(cfg_cmdline[rows], optarg, CFG_LINE_LEN(cfg_cmdline[rows])); rows++; break; case 'm': strlcpy(cfg_cmdline[rows], "imt_mem_pools_number: ", SRVBUFLEN); strncat(cfg_cmdline[rows], optarg, CFG_LINE_LEN(cfg_cmdline[rows])); have_num_memory_pools = TRUE; rows++; break; case 'p': strlcpy(cfg_cmdline[rows], "imt_path: ", SRVBUFLEN); strncat(cfg_cmdline[rows], optarg, CFG_LINE_LEN(cfg_cmdline[rows])); rows++; break; case 'r': strlcpy(cfg_cmdline[rows], "sql_refresh_time: ", SRVBUFLEN); strncat(cfg_cmdline[rows], optarg, CFG_LINE_LEN(cfg_cmdline[rows])); rows++; cfg_cmdline[rows] = malloc(SRVBUFLEN); strlcpy(cfg_cmdline[rows], "print_refresh_time: ", SRVBUFLEN); strncat(cfg_cmdline[rows], optarg, CFG_LINE_LEN(cfg_cmdline[rows])); rows++; break; case 'v': strlcpy(cfg_cmdline[rows], "sql_table_version: ", SRVBUFLEN); strncat(cfg_cmdline[rows], optarg, CFG_LINE_LEN(cfg_cmdline[rows])); rows++; break; case 's': strlcpy(cfg_cmdline[rows], "imt_mem_pools_size: ", SRVBUFLEN); strncat(cfg_cmdline[rows], optarg, CFG_LINE_LEN(cfg_cmdline[rows])); rows++; break; case 'S': strlcpy(cfg_cmdline[rows], "syslog: ", SRVBUFLEN); strncat(cfg_cmdline[rows], optarg, CFG_LINE_LEN(cfg_cmdline[rows])); rows++; break; case 'i': strlcpy(cfg_cmdline[rows], "interface: ", SRVBUFLEN); strncat(cfg_cmdline[rows], optarg, CFG_LINE_LEN(cfg_cmdline[rows])); rows++; break; case 'I': strlcpy(cfg_cmdline[rows], "pcap_savefile: ", SRVBUFLEN); strncat(cfg_cmdline[rows], optarg, CFG_LINE_LEN(cfg_cmdline[rows])); rows++; break; case 'w': strlcpy(cfg_cmdline[rows], "interface_wait: true", SRVBUFLEN); rows++; break; case 'W': strlcpy(cfg_cmdline[rows], "savefile_wait: true", SRVBUFLEN); rows++; break; case 'L': strlcpy(cfg_cmdline[rows], "snaplen: ", SRVBUFLEN); strncat(cfg_cmdline[rows], optarg, CFG_LINE_LEN(cfg_cmdline[rows])); rows++; break; case 'R': strlcpy(cfg_cmdline[rows], "sfacctd_renormalize: true", SRVBUFLEN); rows++; break; case 'h': usage_daemon(argv[0]); exit(0); break; default: usage_daemon(argv[0]); exit(1); break; } } /* post-checks and resolving conflicts */ if (strlen(config_file)) { if (parse_configuration_file(config_file) != SUCCESS) exit(1); } else { if (parse_configuration_file(NULL) != SUCCESS) exit(1); } /* XXX: glue; i'm conscious it's a dirty solution from an engineering viewpoint; someday later i'll fix this */ list = plugins_list; while(list) { list->cfg.acct_type = ACCT_PM; set_default_preferences(&list->cfg); if (!strcmp(list->name, "default") && !strcmp(list->type.string, "core")) memcpy(&config, &list->cfg, sizeof(struct configuration)); list = list->next; } if (config.files_umask) umask(config.files_umask); /* Let's check whether we need superuser privileges */ if (config.snaplen) psize = config.snaplen; else config.snaplen = psize; if (!config.pcap_savefile) { if (getuid() != 0) { printf("%s\n\n", PMACCTD_USAGE_HEADER); printf("ERROR ( default/core ): You need superuser privileges to run this command.\nExiting ...\n\n"); exit(1); } } if (config.daemon) { list = plugins_list; while (list) { if (!strcmp(list->type.string, "print")) printf("WARN ( default/core ): Daemonizing. Hmm, bye bye screen.\n"); list = list->next; } if (debug || config.debug) printf("WARN ( default/core ): debug is enabled; forking in background. Console logging will get lost.\n"); daemonize(); } initsetproctitle(argc, argv, envp); if (config.syslog) { logf = parse_log_facility(config.syslog); if (logf == ERR) { config.syslog = NULL; printf("WARN ( default/core ): specified syslog facility is not supported; logging to console.\n"); } else openlog(NULL, LOG_PID, logf); Log(LOG_INFO, "INFO ( default/core ): Start logging ...\n"); } if (config.logfile) { config.logfile_fd = open_logfile(config.logfile); list = plugins_list; while (list) { list->cfg.logfile_fd = config.logfile_fd ; list = list->next; } } /* Enforcing policies over aggregation methods */ list = plugins_list; while (list) { if (list->type.id != PLUGIN_ID_CORE) { /* applies to all plugins */ if (config.classifiers_path && (list->cfg.sampling_rate || config.ext_sampling_rate)) { Log(LOG_ERR, "ERROR ( default/core ): Packet sampling and classification are mutual exclusive.\n"); exit(1); } if (list->cfg.sampling_rate && config.ext_sampling_rate) { Log(LOG_ERR, "ERROR ( default/core ): Internal packet sampling and external packet sampling are mutual exclusive.\n"); exit(1); } if (list->type.id == PLUGIN_ID_TEE) { Log(LOG_ERR, "ERROR ( default/core ): 'tee' plugin not supported in 'pmacctd'.\n"); exit(1); } else if (list->type.id == PLUGIN_ID_NFPROBE) { /* If we already renormalizing an external sampling rate, we cancel the sampling information from the probe plugin */ if (config.sfacctd_renormalize && list->cfg.ext_sampling_rate) list->cfg.ext_sampling_rate = 0; config.handle_fragments = TRUE; list->cfg.nfprobe_what_to_count = list->cfg.what_to_count; list->cfg.what_to_count = 0; #if defined (HAVE_L2) if (list->cfg.nfprobe_version == 9 || list->cfg.nfprobe_version == 10) { list->cfg.what_to_count |= COUNT_SRC_MAC; list->cfg.what_to_count |= COUNT_DST_MAC; list->cfg.what_to_count |= COUNT_VLAN; } #endif list->cfg.what_to_count |= COUNT_SRC_HOST; list->cfg.what_to_count |= COUNT_DST_HOST; if (list->cfg.networks_file || list->cfg.networks_mask || list->cfg.nfacctd_net) { list->cfg.what_to_count |= COUNT_SRC_NMASK; list->cfg.what_to_count |= COUNT_DST_NMASK; } list->cfg.what_to_count |= COUNT_SRC_PORT; list->cfg.what_to_count |= COUNT_DST_PORT; list->cfg.what_to_count |= COUNT_IP_TOS; list->cfg.what_to_count |= COUNT_IP_PROTO; if (list->cfg.networks_file || (list->cfg.nfacctd_bgp && list->cfg.nfacctd_as == NF_AS_BGP)) { list->cfg.what_to_count |= COUNT_SRC_AS; list->cfg.what_to_count |= COUNT_DST_AS; list->cfg.what_to_count |= COUNT_PEER_DST_IP; } if ((list->cfg.nfprobe_version == 9 || list->cfg.nfprobe_version == 10) && list->cfg.classifiers_path) { list->cfg.what_to_count |= COUNT_CLASS; config.handle_flows = TRUE; } if (list->cfg.pre_tag_map) { list->cfg.what_to_count |= COUNT_ID; list->cfg.what_to_count |= COUNT_ID2; } list->cfg.what_to_count |= COUNT_IN_IFACE; list->cfg.what_to_count |= COUNT_OUT_IFACE; if (list->cfg.what_to_count & (COUNT_STD_COMM|COUNT_EXT_COMM|COUNT_LOCAL_PREF|COUNT_MED|COUNT_AS_PATH| COUNT_PEER_SRC_AS|COUNT_PEER_DST_AS|COUNT_PEER_SRC_IP|COUNT_SRC_STD_COMM| COUNT_SRC_EXT_COMM|COUNT_SRC_AS_PATH|COUNT_SRC_MED|COUNT_SRC_LOCAL_PREF| COUNT_MPLS_VPN_RD)) { Log(LOG_ERR, "ERROR ( default/core ): 'src_as', 'dst_as' and 'peer_dst_ip' are currently the only BGP-related primitives supported within the 'nfprobe' plugin.\n"); exit(1); } list->cfg.what_to_count |= COUNT_COUNTERS; list->cfg.data_type = PIPE_TYPE_METADATA; list->cfg.data_type |= PIPE_TYPE_EXTRAS; } else if (list->type.id == PLUGIN_ID_SFPROBE) { /* If we already renormalizing an external sampling rate, we cancel the sampling information from the probe plugin */ if (config.sfacctd_renormalize && list->cfg.ext_sampling_rate) list->cfg.ext_sampling_rate = 0; if (psize < 128) psize = config.snaplen = 128; /* SFL_DEFAULT_HEADER_SIZE */ list->cfg.what_to_count = COUNT_PAYLOAD; if (list->cfg.classifiers_path) { list->cfg.what_to_count |= COUNT_CLASS; config.handle_fragments = TRUE; config.handle_flows = TRUE; } if (list->cfg.nfacctd_bgp && list->cfg.nfacctd_as == NF_AS_BGP) { list->cfg.what_to_count |= COUNT_SRC_AS; list->cfg.what_to_count |= COUNT_DST_AS; list->cfg.what_to_count |= COUNT_PEER_DST_IP; } if (list->cfg.nfacctd_bgp && list->cfg.nfacctd_net == NF_NET_BGP) { list->cfg.what_to_count |= COUNT_SRC_NMASK; list->cfg.what_to_count |= COUNT_DST_NMASK; } if (list->cfg.pre_tag_map) { list->cfg.what_to_count |= COUNT_ID; list->cfg.what_to_count |= COUNT_ID2; } if (list->cfg.what_to_count & (COUNT_STD_COMM|COUNT_EXT_COMM|COUNT_LOCAL_PREF|COUNT_MED|COUNT_AS_PATH| COUNT_PEER_SRC_AS|COUNT_PEER_DST_AS|COUNT_PEER_SRC_IP|COUNT_SRC_STD_COMM| COUNT_SRC_EXT_COMM|COUNT_SRC_AS_PATH|COUNT_SRC_MED|COUNT_SRC_LOCAL_PREF| COUNT_MPLS_VPN_RD)) { Log(LOG_ERR, "ERROR ( default/core ): 'src_as', 'dst_as' and 'peer_dst_ip' are currently the only BGP-related primitives supported within the 'sfprobe' plugin.\n"); exit(1); } #if defined (HAVE_L2) list->cfg.what_to_count |= COUNT_VLAN; list->cfg.what_to_count |= COUNT_COS; #endif list->cfg.data_type = PIPE_TYPE_PAYLOAD; } else { evaluate_sums(&list->cfg.what_to_count, list->name, list->type.string); if (list->cfg.what_to_count & (COUNT_SRC_PORT|COUNT_DST_PORT|COUNT_SUM_PORT|COUNT_TCPFLAGS)) config.handle_fragments = TRUE; if (list->cfg.what_to_count & COUNT_FLOWS) { config.handle_fragments = TRUE; config.handle_flows = TRUE; } if (list->cfg.what_to_count & COUNT_CLASS) { config.handle_fragments = TRUE; config.handle_flows = TRUE; } if (!list->cfg.what_to_count) { Log(LOG_WARNING, "WARN ( %s/%s ): defaulting to SRC HOST aggregation.\n", list->name, list->type.string); list->cfg.what_to_count |= COUNT_SRC_HOST; } if ((list->cfg.what_to_count & (COUNT_SRC_AS|COUNT_DST_AS|COUNT_SUM_AS)) && !list->cfg.networks_file && list->cfg.nfacctd_as != NF_AS_BGP) { Log(LOG_ERR, "ERROR ( %s/%s ): AS aggregation selected but NO 'networks_file' or 'pmacctd_as' are specified. Exiting...\n\n", list->name, list->type.string); exit(1); } if (list->cfg.what_to_count & (COUNT_SRC_NET|COUNT_DST_NET|COUNT_SUM_NET|COUNT_SRC_NMASK|COUNT_DST_NMASK)) { if (!list->cfg.nfacctd_net) { if (list->cfg.networks_file) list->cfg.nfacctd_net |= NF_NET_NEW; if (list->cfg.networks_mask) list->cfg.nfacctd_net |= NF_NET_STATIC; if (!list->cfg.nfacctd_net) { Log(LOG_ERR, "ERROR ( %s/%s ): network aggregation selected but none of 'pmacctd_net', 'networks_file', 'networks_mask' is specified. Exiting ...\n\n", list->name, list->type.string); exit(1); } } else { if ((list->cfg.nfacctd_net == NF_NET_NEW && !list->cfg.networks_file) || (list->cfg.nfacctd_net == NF_NET_STATIC && !list->cfg.networks_mask) || (list->cfg.nfacctd_net == NF_NET_BGP && !list->cfg.nfacctd_bgp) || (list->cfg.nfacctd_net == NF_NET_KEEP)) { Log(LOG_ERR, "ERROR ( %s/%s ): network aggregation selected but none of 'bgp_daemon', 'networks_file', 'networks_mask' is specified. Exiting ...\n\n", list->name, list->type.string); exit(1); } } } if (list->cfg.what_to_count & COUNT_CLASS && !list->cfg.classifiers_path) { Log(LOG_ERR, "ERROR ( %s/%s ): 'class' aggregation selected but NO 'classifiers' key specified. Exiting...\n\n", list->name, list->type.string); exit(1); } bgp_config_checks(&list->cfg); list->cfg.what_to_count |= COUNT_COUNTERS; list->cfg.data_type |= PIPE_TYPE_METADATA; } } list = list->next; } /* plugins glue: creation (since 094) */ if (config.classifiers_path) { init_classifiers(config.classifiers_path); init_conntrack_table(); } load_plugins(&req); if (config.handle_fragments) init_ip_fragment_handler(); if (config.handle_flows) init_ip_flow_handler(); load_networks(config.networks_file, &nt, &nc); /* If any device/savefile have been specified, choose a suitable device where to listen for traffic */ if (!config.dev && !config.pcap_savefile) { Log(LOG_WARNING, "WARN ( default/core ): Selecting a suitable device.\n"); config.dev = pcap_lookupdev(errbuf); if (!config.dev) { Log(LOG_WARNING, "WARN ( default/core ): Unable to find a suitable device. Exiting.\n"); exit_all(1); } else Log(LOG_DEBUG, "DEBUG ( default/core ): device is %s\n", config.dev); } /* reading filter; if it exists, we'll take an action later */ if (!strlen(config_file)) config.clbuf = copy_argv(&argv[optind]); if (config.dev && config.pcap_savefile) { Log(LOG_ERR, "ERROR ( default/core ): 'interface' (-i) and 'pcap_savefile' (-I) directives are mutually exclusive. Exiting.\n"); exit_all(1); } throttle_startup: if (config.dev) { if ((device.dev_desc = pcap_open_live(config.dev, psize, config.promisc, 1000, errbuf)) == NULL) { if (!config.if_wait) { Log(LOG_ERR, "ERROR ( default/core ): pcap_open_live(): %s\n", errbuf); exit_all(1); } else { sleep(5); /* XXX: user defined ? */ goto throttle_startup; } } } else if (config.pcap_savefile) { if ((device.dev_desc = pcap_open_offline(config.pcap_savefile, errbuf)) == NULL) { Log(LOG_ERR, "ERROR ( default/core ): pcap_open_offline(): %s\n", errbuf); exit_all(1); } } device.active = TRUE; glob_pcapt = device.dev_desc; /* SIGINT/stats handling */ if (config.pipe_size) { int slen = sizeof(config.pipe_size), x; #if defined (PCAP_TYPE_linux) || (PCAP_TYPE_snoop) Setsocksize(pcap_fileno(device.dev_desc), SOL_SOCKET, SO_RCVBUF, &config.pipe_size, slen); getsockopt(pcap_fileno(device.dev_desc), SOL_SOCKET, SO_RCVBUF, &x, &slen); Log(LOG_DEBUG, "DEBUG ( default/core ): PCAP buffer: obtained %d / %d bytes.\n", x, config.pipe_size); #endif } device.link_type = pcap_datalink(device.dev_desc); for (index = 0; _devices[index].link_type != -1; index++) { if (device.link_type == _devices[index].link_type) device.data = &_devices[index]; } load_plugin_filters(device.link_type); /* we need to solve some link constraints */ if (device.data == NULL) { Log(LOG_ERR, "ERROR ( default/core ): data link not supported: %d\n", device.link_type); exit_all(1); } else Log(LOG_INFO, "OK ( default/core ): link type is: %d\n", device.link_type); if (device.link_type != DLT_EN10MB && device.link_type != DLT_IEEE802 && device.link_type != DLT_LINUX_SLL) { list = plugins_list; while (list) { if ((list->cfg.what_to_count & COUNT_SRC_MAC) || (list->cfg.what_to_count & COUNT_DST_MAC)) { Log(LOG_ERR, "ERROR ( default/core ): MAC aggregation not available for link type: %d\n", device.link_type); exit_all(1); } list = list->next; } } cb_data.device = &device; /* doing pcap stuff */ if (!config.dev || pcap_lookupnet(config.dev, &localnet, &netmask, errbuf) < 0) { localnet = 0; netmask = 0; Log(LOG_WARNING, "WARN ( default/core ): %s\n", errbuf); } if (pcap_compile(device.dev_desc, &filter, config.clbuf, 0, netmask) < 0) Log(LOG_WARNING, "WARN: %s\nWARN ( default/core ): going on without a filter\n", pcap_geterr(device.dev_desc)); else { if (pcap_setfilter(device.dev_desc, &filter) < 0) Log(LOG_WARNING, "WARN: %s\nWARN ( default/core ): going on without a filter\n", pcap_geterr(device.dev_desc)); } /* signal handling we want to inherit to plugins (when not re-defined elsewhere) */ signal(SIGCHLD, startup_handle_falling_child); /* takes note of plugins failed during startup phase */ signal(SIGHUP, reload); /* handles reopening of syslog channel */ signal(SIGUSR1, push_stats); /* logs various statistics via Log() calls */ signal(SIGUSR2, reload_maps); /* sets to true the reload_maps flag */ signal(SIGPIPE, SIG_IGN); /* we want to exit gracefully when a pipe is broken */ /* loading pre-tagging map, if any */ if (config.pre_tag_map) { load_id_file(config.acct_type, config.pre_tag_map, &idt, &req, &tag_map_allocated); cb_data.idt = (u_char *) &idt; } else { memset(&idt, 0, sizeof(idt)); cb_data.idt = NULL; } #if defined ENABLE_THREADS /* starting the BGP thread */ if (config.nfacctd_bgp) { req.bpf_filter = TRUE; load_comm_patterns(&config.nfacctd_bgp_stdcomm_pattern, &config.nfacctd_bgp_extcomm_pattern, &config.nfacctd_bgp_stdcomm_pattern_to_asn); if (config.nfacctd_bgp_peer_as_src_type == BGP_SRC_PRIMITIVES_MAP) { if (config.nfacctd_bgp_peer_as_src_map) { load_id_file(MAP_BGP_PEER_AS_SRC, config.nfacctd_bgp_peer_as_src_map, &bpas_table, &req, &bpas_map_allocated); cb_data.bpas_table = (u_char *) &bpas_table; } else { Log(LOG_ERR, "ERROR: bgp_peer_as_src_type set to 'map' but no map defined. Exiting.\n"); exit(1); } } else cb_data.bpas_table = NULL; if (config.nfacctd_bgp_src_local_pref_type == BGP_SRC_PRIMITIVES_MAP) { if (config.nfacctd_bgp_src_local_pref_map) { load_id_file(MAP_BGP_SRC_LOCAL_PREF, config.nfacctd_bgp_src_local_pref_map, &blp_table, &req, &blp_map_allocated); cb_data.blp_table = (u_char *) &blp_table; } else { Log(LOG_ERR, "ERROR: bgp_src_local_pref_type set to 'map' but no map defined. Exiting.\n"); exit(1); } } else cb_data.blp_table = NULL; if (config.nfacctd_bgp_src_med_type == BGP_SRC_PRIMITIVES_MAP) { if (config.nfacctd_bgp_src_med_map) { load_id_file(MAP_BGP_SRC_MED, config.nfacctd_bgp_src_med_map, &bmed_table, &req, &bmed_map_allocated); cb_data.bmed_table = (u_char *) &bmed_table; } else { Log(LOG_ERR, "ERROR: bgp_src_med_type set to 'map' but no map defined. Exiting.\n"); exit(1); } } else cb_data.bmed_table = NULL; if (config.nfacctd_bgp_to_agent_map) { load_id_file(MAP_BGP_TO_XFLOW_AGENT, config.nfacctd_bgp_to_agent_map, &bta_table, &req, &bta_map_allocated); cb_data.bta_table = (u_char *) &bta_table; } else { Log(LOG_ERR, "ERROR ( default/core ): 'bgp_daemon' configured but no 'bgp_agent_map' has been specified. Exiting.\n"); exit(1); } /* Limiting BGP peers to only two: one would suffice in pmacctd but in case maps are reloadable (ie. bta), it could be handy to keep a backup feed in memory */ config.nfacctd_bgp_max_peers = 2; if (config.nfacctd_bgp_iface_to_rd_map) { Log(LOG_ERR, "ERROR ( default/core ): 'bgp_iface_to_rd_map' is not supported by this daemon. Exiting.\n"); exit(1); } cb_data.f_agent = (char *)&client; nfacctd_bgp_wrapper(); /* Let's give the BGP thread some advantage to create its structures */ sleep(5); } #else if (config.nfacctd_bgp) { Log(LOG_ERR, "ERROR ( default/core ): 'bgp_daemon' is available only with threads (--enable-threads). Exiting.\n"); exit(1); } #endif /* Init tunnel handlers */ tunnel_registry_init(); /* plugins glue: creation (until 093) */ evaluate_packet_handlers(); pm_setproctitle("%s [%s]", "Core Process", "default"); if (config.pidfile) write_pid_file(config.pidfile); /* signals to be handled only by pmacctd; we set proper handlers after plugin creation */ signal(SIGINT, my_sigint_handler); signal(SIGTERM, my_sigint_handler); signal(SIGCHLD, handle_falling_child); kill(getpid(), SIGCHLD); /* When reading packets from a savefile, things are lightning fast; we will sit here just few seconds, thus allowing plugins to complete their startup operations */ if (config.pcap_savefile) { Log(LOG_INFO, "INFO ( default/core ): PCAP capture file, sleeping for 2 seconds\n"); sleep(2); } /* Main loop: if pcap_loop() exits maybe an error occurred; we will try closing and reopening again our listening device */ for(;;) { if (!device.active) { Log(LOG_WARNING, "WARN ( default/core ): %s has become unavailable; throttling ...\n", config.dev); throttle_loop: sleep(5); /* XXX: user defined ? */ if ((device.dev_desc = pcap_open_live(config.dev, psize, config.promisc, 1000, errbuf)) == NULL) goto throttle_loop; pcap_setfilter(device.dev_desc, &filter); device.active = TRUE; } pcap_loop(device.dev_desc, -1, pcap_cb, (u_char *) &cb_data); pcap_close(device.dev_desc); if (config.pcap_savefile) { if (config.sf_wait) { fill_pipe_buffer(); Log(LOG_INFO, "INFO ( default/core ): finished reading PCAP capture file\n"); wait(NULL); } stop_all_childs(); } device.active = FALSE; } }