| /* |
| * osmo-pcap-client code |
| * |
| * (C) 2011-2016 by Holger Hans Peter Freyther <holger@moiji-mobile.com> |
| * (C) 2011 by On-Waves |
| * All Rights Reserved |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU Affero General Public License as published by |
| * the Free Software Foundation; either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU Affero General Public License for more details. |
| * |
| * You should have received a copy of the GNU Affero General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| * |
| */ |
| |
| #include <osmo-pcap/common.h> |
| #include <osmo-pcap/osmo_pcap_client.h> |
| #include <osmo-pcap/osmo_tls.h> |
| |
| #include <osmocom/core/application.h> |
| #include <osmocom/core/rate_ctr.h> |
| #include <osmocom/core/select.h> |
| #include <osmocom/core/stats.h> |
| #include <osmocom/core/talloc.h> |
| |
| #include <osmocom/vty/logging.h> |
| #include <osmocom/vty/telnet_interface.h> |
| #include <osmocom/vty/stats.h> |
| |
| #include <pcap.h> |
| #include <signal.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <time.h> |
| |
| #define _GNU_SOURCE |
| #include <getopt.h> |
| |
| #include "osmopcapconfig.h" |
| |
| static const char *config_file = "osmo-pcap-client.cfg"; |
| static int daemonize = 0; |
| |
| void *tall_cli_ctx; |
| struct osmo_pcap_client *pcap_client; |
| extern void *tall_msgb_ctx; |
| extern void *tall_ctr_ctx; |
| |
| |
| static const struct rate_ctr_desc pcap_client_ctr_desc[] = { |
| [CLIENT_CTR_CONNECT] = { "server:connect", "Connects to the server" }, |
| [CLIENT_CTR_BYTES] = { "captured:bytes", "Captured bytes " }, |
| [CLIENT_CTR_PKTS] = { "captured:pkts", "Captured packets " }, |
| [CLIENT_CTR_2BIG] = { "bpf:too_big", "Captured data too big " }, |
| [CLIENT_CTR_NOMEM] = { "client:no_mem", "No memory available " }, |
| [CLIENT_CTR_QERR] = { "client:queue_err", "Can not queue data " }, |
| [CLIENT_CTR_PERR] = { "client:pcap_err", "libpcap error " }, |
| [CLIENT_CTR_WERR] = { "client:write_err", "Write error " }, |
| [CLIENT_CTR_P_RECV] = { "pcap:recv", "PCAP received packets " }, |
| [CLIENT_CTR_P_DROP] = { "pcap:drop", "PCAP dropped packets " }, |
| [CLIENT_CTR_P_IFDROP] = { "pcap:ifdrop", "iface dropped packets " }, |
| }; |
| |
| static const struct rate_ctr_group_desc pcap_client_ctr_group_desc = { |
| .group_name_prefix = "pcap:client", |
| .group_description = "PCAP Client statistics", |
| .num_ctr = ARRAY_SIZE(pcap_client_ctr_desc), |
| .ctr_desc = pcap_client_ctr_desc, |
| .class_id = OSMO_STATS_CLASS_GLOBAL, |
| }; |
| |
| static struct vty_app_info vty_info = { |
| .name = "OsmoPCAPClient", |
| .version = PACKAGE_VERSION, |
| .go_parent_cb = osmopcap_go_parent, |
| .is_config_node = osmopcap_is_config_node, |
| }; |
| |
| static void print_usage() |
| { |
| printf("Usage: osmo_pcap_client\n"); |
| } |
| |
| static void print_help() |
| { |
| printf(" Some useful help...\n"); |
| printf(" -h --help this text\n"); |
| printf(" -D --daemonize Fork the process into a background daemon\n"); |
| printf(" -d option --debug=DRLL:DCC:DMM:DRR:DRSL:DNM enable debugging\n"); |
| printf(" -s --disable-color\n"); |
| printf(" -T --timestamp. Print a timestamp in the debug output.\n"); |
| printf(" -e --log-level number. Set a global loglevel.\n"); |
| printf(" -c --config-file filename The config file to use.\n"); |
| |
| printf("\nVTY reference generation:\n"); |
| printf(" --vty-ref-mode MODE VTY reference generation mode (e.g. 'expert').\n"); |
| printf(" --vty-ref-xml Generate the VTY reference XML output and exit.\n"); |
| } |
| |
| static void handle_long_options(const char *prog_name, const int long_option) |
| { |
| static int vty_ref_mode = VTY_REF_GEN_MODE_DEFAULT; |
| switch (long_option) { |
| case 1: |
| vty_ref_mode = get_string_value(vty_ref_gen_mode_names, optarg); |
| if (vty_ref_mode < 0) { |
| fprintf(stderr, "%s: Unknown VTY reference generation " |
| "mode '%s'\n", prog_name, optarg); |
| exit(2); |
| } |
| break; |
| case 2: |
| fprintf(stderr, "Generating the VTY reference in mode '%s' (%s)\n", |
| get_value_string(vty_ref_gen_mode_names, vty_ref_mode), |
| get_value_string(vty_ref_gen_mode_desc, vty_ref_mode)); |
| vty_dump_xml_ref_mode(stdout, (enum vty_ref_gen_mode) vty_ref_mode); |
| exit(0); |
| default: |
| fprintf(stderr, "%s: error parsing cmdline options\n", prog_name); |
| exit(2); |
| } |
| } |
| |
| static void handle_options(int argc, char **argv) |
| { |
| while (1) { |
| int option_index = 0, c; |
| static int long_option = 0; |
| static struct option long_options[] = { |
| {"help", 0, 0, 'h'}, |
| {"daemonize", 0, 0, 'D'}, |
| {"debug", 1, 0, 'd'}, |
| {"disable-color", 0, 0, 's'}, |
| {"timestamp", 0, 0, 'T'}, |
| {"log-level", 1, 0, 'e'}, |
| {"config-file", 1, 0, 'c'}, |
| {"vty-ref-mode", 1, &long_option, 1}, |
| {"vty-ref-xml", 0, &long_option, 2}, |
| {0, 0, 0, 0} |
| }; |
| |
| c = getopt_long(argc, argv, "hd:DsTc:e:", |
| long_options, &option_index); |
| if (c == -1) |
| break; |
| |
| switch (c) { |
| case 'h': |
| print_usage(); |
| print_help(); |
| exit(0); |
| case 0: |
| handle_long_options(argv[0], long_option); |
| break; |
| case 'D': |
| daemonize = 1; |
| break; |
| case 'd': |
| log_parse_category_mask(osmo_stderr_target, optarg); |
| break; |
| case 's': |
| log_set_use_color(osmo_stderr_target, 0); |
| break; |
| case 'T': |
| log_set_print_timestamp(osmo_stderr_target, 1); |
| break; |
| case 'e': |
| log_set_log_level(osmo_stderr_target, atoi(optarg)); |
| break; |
| case 'c': |
| config_file = strdup(optarg); |
| break; |
| default: |
| /* ignore */ |
| break; |
| } |
| } |
| } |
| |
| static void signal_handler(int signum) |
| { |
| fprintf(stdout, "signal %u received\n", signum); |
| |
| switch (signum) { |
| case SIGINT: |
| exit(0); |
| break; |
| case SIGABRT: |
| /* in case of abort, we want to obtain a talloc report and |
| * then run default SIGABRT handler, who will generate coredump |
| * and abort the process. abort() should do this for us after we |
| * return, but program wouldn't exit if an external SIGABRT is |
| * received. |
| */ |
| talloc_report(tall_vty_ctx, stderr); |
| talloc_report_full(tall_cli_ctx, stderr); |
| signal(SIGABRT, SIG_DFL); |
| raise(SIGABRT); |
| break; |
| case SIGUSR1: |
| talloc_report(tall_vty_ctx, stderr); |
| talloc_report_full(tall_cli_ctx, stderr); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static void talloc_init_ctx() |
| { |
| tall_cli_ctx = talloc_named_const(NULL, 0, "client"); |
| tall_msgb_ctx = talloc_named_const(tall_cli_ctx, 0, "msgb"); |
| tall_ctr_ctx = talloc_named_const(tall_cli_ctx, 0, "counter"); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| int rc; |
| |
| talloc_init_ctx(); |
| osmo_init_logging2(tall_cli_ctx, &log_info); |
| |
| vty_info.copyright = osmopcap_copyright; |
| vty_init(&vty_info); |
| logging_vty_add_cmds(); |
| osmo_stats_vty_add_cmds(); |
| vty_client_init(tall_cli_ctx); |
| |
| /* parse options */ |
| handle_options(argc, argv); |
| |
| rate_ctr_init(tall_cli_ctx); |
| osmo_stats_init(tall_cli_ctx); |
| |
| /* seed the PRNG */ |
| srand(time(NULL)); |
| |
| |
| signal(SIGINT, &signal_handler); |
| signal(SIGABRT, &signal_handler); |
| signal(SIGUSR1, &signal_handler); |
| osmo_init_ignore_signals(); |
| |
| osmo_tls_init(); |
| |
| rc = telnet_init(tall_cli_ctx, NULL, OSMO_VTY_PORT_PCAP_CLIENT); |
| if (rc < 0) { |
| LOGP(DCLIENT, LOGL_ERROR, "Failed to bind telnet interface\n"); |
| exit(1); |
| } |
| |
| pcap_client = osmo_pcap_client_alloc(tall_cli_ctx); |
| if (!pcap_client) { |
| LOGP(DCLIENT, LOGL_ERROR, "Failed to allocate osmo_pcap_client.\n"); |
| exit(1); |
| } |
| |
| /* initialize the queue */ |
| INIT_LLIST_HEAD(&pcap_client->conns); |
| osmo_client_conn_init(&pcap_client->conn, pcap_client); |
| pcap_client->conn.name = "default"; |
| |
| /* initialize the stats interface */ |
| pcap_client->ctrg = rate_ctr_group_alloc(pcap_client, &pcap_client_ctr_group_desc, 0); |
| if (!pcap_client->ctrg) { |
| LOGP(DCLIENT, LOGL_ERROR, "Failed to allocate rate ctr\n"); |
| exit(1); |
| } |
| |
| if (vty_read_config_file(config_file, NULL) < 0) { |
| LOGP(DCLIENT, LOGL_ERROR, |
| "Failed to parse the config file: %s\n", config_file); |
| exit(1); |
| } |
| |
| /* attempt to connect to the remote */ |
| if (pcap_client->conn.srv_ip && pcap_client->conn.srv_port > 0) |
| osmo_client_connect(&pcap_client->conn); |
| |
| if (daemonize) { |
| rc = osmo_daemonize(); |
| if (rc < 0) { |
| perror("Error during daemonize"); |
| exit(1); |
| } |
| } |
| |
| while (1) { |
| osmo_select_main(0); |
| } |
| |
| return(0); |
| } |