294 lines
7.1 KiB
C
294 lines
7.1 KiB
C
/*
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* (C) 2010 by Harald Welte <laforge@gnumonks.org>
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* (C) 2010 by On-Waves
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <string.h>
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#include <time.h>
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#include <inttypes.h>
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#include <osmocom/core/talloc.h>
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#include <osmocom/core/timer.h>
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#include <osmocom/core/rate_ctr.h>
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#include <osmocom/gsm/gsm48.h>
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#include <osmocom/gprs/gprs_ns2.h>
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#include <osmocom/gsm/apn.h>
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#include <osmocom/sgsn/debug.h>
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#include <osmocom/sgsn/gb_proxy.h>
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#include <osmocom/sgsn/gprs_utils.h>
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#include <osmocom/sgsn/vty.h>
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#include <osmocom/vty/command.h>
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#include <osmocom/vty/logging.h>
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#include <osmocom/vty/vty.h>
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#include <osmocom/vty/misc.h>
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static struct gbproxy_config *g_cfg = NULL;
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/*
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* vty code for gbproxy below
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*/
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static struct cmd_node gbproxy_node = {
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GBPROXY_NODE,
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"%s(config-gbproxy)# ",
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1,
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};
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static void gbprox_vty_print_bvc(struct vty *vty, struct gbproxy_bvc *bvc)
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{
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struct gprs_ra_id raid;
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gsm48_parse_ra(&raid, bvc->ra);
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vty_out(vty, "NSEI %5u, PTP-BVCI %5u, "
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"RAI %s", bvc->nse->nsei, bvc->bvci, osmo_rai_name(&raid));
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if (bvc->blocked)
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vty_out(vty, " [BVC-BLOCKED]");
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vty_out(vty, "%s", VTY_NEWLINE);
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}
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static int config_write_gbproxy(struct vty *vty)
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{
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vty_out(vty, "gbproxy%s", VTY_NEWLINE);
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vty_out(vty, " sgsn nsei %u%s", g_cfg->nsip_sgsn_nsei,
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VTY_NEWLINE);
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return CMD_SUCCESS;
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}
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DEFUN(cfg_gbproxy,
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cfg_gbproxy_cmd,
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"gbproxy",
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"Configure the Gb proxy")
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{
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vty->node = GBPROXY_NODE;
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return CMD_SUCCESS;
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}
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DEFUN(cfg_nsip_sgsn_nsei,
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cfg_nsip_sgsn_nsei_cmd,
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"sgsn nsei <0-65534>",
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"SGSN information\n"
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"NSEI to be used in the connection with the SGSN\n"
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"The NSEI\n")
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{
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unsigned int nsei = atoi(argv[0]);
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g_cfg->nsip_sgsn_nsei = nsei;
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return CMD_SUCCESS;
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}
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static void log_set_bvc_filter(struct log_target *target,
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const uint16_t *bvci)
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{
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if (bvci) {
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uintptr_t bvci_filter = *bvci | BVC_LOG_CTX_FLAG;
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target->filter_map |= (1 << LOG_FLT_GB_BVC);
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target->filter_data[LOG_FLT_GB_BVC] = (void *)bvci_filter;
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} else if (target->filter_data[LOG_FLT_GB_BVC]) {
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target->filter_map = ~(1 << LOG_FLT_GB_BVC);
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target->filter_data[LOG_FLT_GB_BVC] = NULL;
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}
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}
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DEFUN(logging_fltr_bvc,
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logging_fltr_bvc_cmd,
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"logging filter bvc bvci <0-65535>",
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LOGGING_STR FILTER_STR
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"Filter based on BSSGP VC\n"
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"Identify BVC by BVCI\n"
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"Numeric identifier\n")
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{
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struct log_target *tgt;
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uint16_t id = atoi(argv[0]);
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log_tgt_mutex_lock();
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tgt = osmo_log_vty2tgt(vty);
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if (!tgt) {
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log_tgt_mutex_unlock();
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return CMD_WARNING;
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}
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log_set_bvc_filter(tgt, &id);
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log_tgt_mutex_unlock();
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return CMD_SUCCESS;
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}
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DEFUN(show_gbproxy, show_gbproxy_cmd, "show gbproxy [stats]",
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SHOW_STR "Display information about the Gb proxy\n" "Show statistics\n")
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{
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struct gbproxy_nse *nse;
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int show_stats = argc >= 1;
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int i, j;
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if (show_stats)
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vty_out_rate_ctr_group(vty, "", g_cfg->ctrg);
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hash_for_each(g_cfg->bss_nses, i, nse, list) {
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struct gbproxy_bvc *bvc;
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hash_for_each(nse->bvcs, j, bvc, list) {
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gbprox_vty_print_bvc(vty, bvc);
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if (show_stats)
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vty_out_rate_ctr_group(vty, " ", bvc->ctrg);
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}
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}
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return CMD_SUCCESS;
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}
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DEFUN(show_gbproxy_links, show_gbproxy_links_cmd, "show gbproxy links",
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SHOW_STR "Display information about the Gb proxy\n" "Show logical links\n")
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{
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struct gbproxy_nse *nse;
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int i, j;
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hash_for_each(g_cfg->bss_nses, i, nse, list) {
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struct gbproxy_bvc *bvc;
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hash_for_each(nse->bvcs, j, bvc, list) {
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gbprox_vty_print_bvc(vty, bvc);
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}
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}
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return CMD_SUCCESS;
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}
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DEFUN(delete_gb_bvci, delete_gb_bvci_cmd,
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"delete-gbproxy-peer <0-65534> bvci <2-65534>",
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"Delete a GBProxy bvc by NSEI and optionally BVCI\n"
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"NSEI number\n"
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"Only delete bvc with a matching BVCI\n"
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"BVCI number\n")
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{
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const uint16_t nsei = atoi(argv[0]);
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const uint16_t bvci = atoi(argv[1]);
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int counter;
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counter = gbproxy_cleanup_bvcs(g_cfg, nsei, bvci);
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if (counter == 0) {
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vty_out(vty, "BVC not found%s", VTY_NEWLINE);
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return CMD_WARNING;
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}
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return CMD_SUCCESS;
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}
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DEFUN(delete_gb_nsei, delete_gb_nsei_cmd,
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"delete-gbproxy-peer <0-65534> (only-bvc|only-nsvc|all) [dry-run]",
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"Delete a GBProxy bvc by NSEI and optionally BVCI\n"
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"NSEI number\n"
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"Only delete BSSGP connections (BVC)\n"
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"Only delete dynamic NS connections (NS-VC)\n"
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"Delete BVC and dynamic NS connections\n"
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"Show what would be deleted instead of actually deleting\n"
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)
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{
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const uint16_t nsei = atoi(argv[0]);
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const char *mode = argv[1];
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int dry_run = argc > 2;
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int delete_bvc = 0;
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int delete_nsvc = 0;
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int counter;
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if (strcmp(mode, "only-bvc") == 0)
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delete_bvc = 1;
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else if (strcmp(mode, "only-nsvc") == 0)
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delete_nsvc = 1;
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else
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delete_bvc = delete_nsvc = 1;
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if (delete_bvc) {
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if (!dry_run) {
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struct gbproxy_nse *nse = gbproxy_nse_by_nsei(g_cfg, nsei);
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counter = gbproxy_cleanup_bvcs(g_cfg, nsei, 0);
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gbproxy_nse_free(nse);
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} else {
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struct gbproxy_nse *nse;
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struct gbproxy_bvc *bvc;
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int i, j;
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counter = 0;
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hash_for_each(g_cfg->bss_nses, i, nse, list) {
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if (nse->nsei != nsei)
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continue;
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hash_for_each(nse->bvcs, j, bvc, list) {
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vty_out(vty, "BVC: ");
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gbprox_vty_print_bvc(vty, bvc);
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counter += 1;
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}
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}
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}
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vty_out(vty, "%sDeleted %d BVC%s",
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dry_run ? "Not " : "", counter, VTY_NEWLINE);
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}
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if (delete_nsvc) {
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struct gprs_ns2_inst *nsi = g_cfg->nsi;
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struct gprs_ns2_nse *nse;
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nse = gprs_ns2_nse_by_nsei(nsi, nsei);
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if (!nse) {
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vty_out(vty, "NSEI not found%s", VTY_NEWLINE);
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return CMD_WARNING;
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}
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/* TODO: We should NOT delete a persistent NSEI/NSVC as soon as we can check for these */
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if (!dry_run)
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gprs_ns2_free_nse(nse);
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vty_out(vty, "%sDeleted NS-VCs for NSEI %d%s",
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dry_run ? "Not " : "", nsei, VTY_NEWLINE);
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}
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return CMD_SUCCESS;
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}
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int gbproxy_vty_init(void)
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{
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install_element_ve(&show_gbproxy_cmd);
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install_element_ve(&show_gbproxy_links_cmd);
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install_element_ve(&logging_fltr_bvc_cmd);
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install_element(ENABLE_NODE, &delete_gb_bvci_cmd);
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install_element(ENABLE_NODE, &delete_gb_nsei_cmd);
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install_element(CONFIG_NODE, &cfg_gbproxy_cmd);
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install_node(&gbproxy_node, config_write_gbproxy);
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install_element(GBPROXY_NODE, &cfg_nsip_sgsn_nsei_cmd);
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return 0;
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}
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int gbproxy_parse_config(const char *config_file, struct gbproxy_config *cfg)
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{
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int rc;
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g_cfg = cfg;
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rc = vty_read_config_file(config_file, NULL);
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if (rc < 0) {
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fprintf(stderr, "Failed to parse the config file: '%s'\n", config_file);
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return rc;
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}
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return 0;
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}
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