| /* |
| * (C) 2010 by Harald Welte <laforge@gnumonks.org> |
| * (C) 2010 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 <sys/socket.h> |
| #include <netinet/in.h> |
| #include <arpa/inet.h> |
| #include <string.h> |
| |
| #include <osmocom/core/talloc.h> |
| |
| #include <osmocom/gprs/gprs_ns.h> |
| |
| #include <openbsc/debug.h> |
| #include <openbsc/gb_proxy.h> |
| #include <openbsc/vty.h> |
| |
| #include <osmocom/vty/command.h> |
| #include <osmocom/vty/vty.h> |
| |
| static struct gbproxy_config *g_cfg = NULL; |
| |
| /* |
| * vty code for mgcp below |
| */ |
| static struct cmd_node gbproxy_node = { |
| GBPROXY_NODE, |
| "%s(config-gbproxy)# ", |
| 1, |
| }; |
| |
| static const struct value_string patch_modes[] = { |
| {GBPROX_PATCH_DEFAULT, "default"}, |
| {GBPROX_PATCH_BSSGP, "bssgp"}, |
| {GBPROX_PATCH_LLC_ATTACH_REQ, "llc-attach-req"}, |
| {GBPROX_PATCH_LLC_ATTACH, "llc-attach"}, |
| {GBPROX_PATCH_LLC_GMM, "llc-gmm"}, |
| {GBPROX_PATCH_LLC_GSM, "llc-gsm"}, |
| {GBPROX_PATCH_LLC, "llc"}, |
| {0, NULL} |
| }; |
| |
| static int config_write_gbproxy(struct vty *vty) |
| { |
| vty_out(vty, "gbproxy%s", VTY_NEWLINE); |
| |
| vty_out(vty, " sgsn nsei %u%s", g_cfg->nsip_sgsn_nsei, |
| VTY_NEWLINE); |
| |
| if (g_cfg->core_mcc > 0) |
| vty_out(vty, " core-mobile-country-code %d%s", |
| g_cfg->core_mcc, VTY_NEWLINE); |
| if (g_cfg->core_mnc > 0) |
| vty_out(vty, " core-mobile-network-code %d%s", |
| g_cfg->core_mnc, VTY_NEWLINE); |
| if (g_cfg->core_apn != NULL) { |
| if (g_cfg->core_apn_size > 0) { |
| char str[500] = {0}; |
| vty_out(vty, " core-access-point-name %s", |
| gbprox_apn_to_str(str, g_cfg->core_apn, |
| g_cfg->core_apn_size)); |
| } else { |
| vty_out(vty, " core-access-point-name none"); |
| } |
| if (g_cfg->match_re) |
| vty_out(vty, " match-imsi %s%s", |
| g_cfg->match_re, VTY_NEWLINE); |
| else |
| vty_out(vty, "%s", VTY_NEWLINE); |
| } |
| if (g_cfg->tlli_max_age > 0) |
| vty_out(vty, " tlli-list max-age %d%s", |
| g_cfg->tlli_max_age, VTY_NEWLINE); |
| if (g_cfg->tlli_max_len > 0) |
| vty_out(vty, " tlli-list max-length %d%s", |
| g_cfg->tlli_max_len, VTY_NEWLINE); |
| |
| if (g_cfg->patch_mode != GBPROX_PATCH_DEFAULT) |
| vty_out(vty, " patch-mode %s%s", |
| get_value_string(patch_modes, g_cfg->patch_mode), |
| VTY_NEWLINE); |
| |
| return CMD_SUCCESS; |
| } |
| |
| DEFUN(cfg_gbproxy, |
| cfg_gbproxy_cmd, |
| "gbproxy", |
| "Configure the Gb proxy") |
| { |
| vty->node = GBPROXY_NODE; |
| return CMD_SUCCESS; |
| } |
| |
| DEFUN(cfg_nsip_sgsn_nsei, |
| cfg_nsip_sgsn_nsei_cmd, |
| "sgsn nsei <0-65534>", |
| "SGSN information\n" |
| "NSEI to be used in the connection with the SGSN\n" |
| "The NSEI\n") |
| { |
| unsigned int port = atoi(argv[0]); |
| |
| g_cfg->nsip_sgsn_nsei = port; |
| return CMD_SUCCESS; |
| } |
| |
| #define GBPROXY_CORE_MNC_STR "Use this network code for the core network\n" |
| |
| DEFUN(cfg_gbproxy_core_mnc, |
| cfg_gbproxy_core_mnc_cmd, |
| "core-mobile-network-code <1-999>", |
| GBPROXY_CORE_MNC_STR "NCC value\n") |
| { |
| g_cfg->core_mnc = atoi(argv[0]); |
| return CMD_SUCCESS; |
| } |
| |
| DEFUN(cfg_gbproxy_no_core_mnc, |
| cfg_gbproxy_no_core_mnc_cmd, |
| "no core-mobile-network-code", |
| NO_STR GBPROXY_CORE_MNC_STR) |
| { |
| g_cfg->core_mnc = 0; |
| return CMD_SUCCESS; |
| } |
| |
| #define GBPROXY_CORE_MCC_STR "Use this country code for the core network\n" |
| |
| DEFUN(cfg_gbproxy_core_mcc, |
| cfg_gbproxy_core_mcc_cmd, |
| "core-mobile-country-code <1-999>", |
| GBPROXY_CORE_MCC_STR "MCC value\n") |
| { |
| g_cfg->core_mcc = atoi(argv[0]); |
| return CMD_SUCCESS; |
| } |
| |
| DEFUN(cfg_gbproxy_no_core_mcc, |
| cfg_gbproxy_no_core_mcc_cmd, |
| "no core-mobile-country-code", |
| NO_STR GBPROXY_CORE_MCC_STR) |
| { |
| g_cfg->core_mcc = 0; |
| return CMD_SUCCESS; |
| } |
| |
| #define GBPROXY_CORE_APN_STR "Use this access point name (APN) for the backbone\n" |
| #define GBPROXY_CORE_APN_ARG_STR "Replace APN by this string\n" "Remove APN\n" |
| |
| static int set_core_apn(struct vty *vty, const char *apn, const char *filter) |
| { |
| const char *err_msg = NULL; |
| int apn_len; |
| |
| if (!apn) { |
| talloc_free(g_cfg->core_apn); |
| g_cfg->core_apn = NULL; |
| g_cfg->core_apn_size = 0; |
| gbprox_set_patch_filter(NULL, NULL); |
| return CMD_SUCCESS; |
| } |
| |
| apn_len = strlen(apn); |
| |
| if (apn_len >= 100) { |
| vty_out(vty, "APN string too long (max 99 chars)%s", |
| VTY_NEWLINE); |
| return CMD_WARNING; |
| } |
| |
| if (!filter) { |
| gbprox_set_patch_filter(NULL, NULL); |
| } else if (gbprox_set_patch_filter(filter, &err_msg) != 0) { |
| vty_out(vty, "Match expression invalid: %s%s", |
| err_msg, VTY_NEWLINE); |
| return CMD_WARNING; |
| } |
| |
| talloc_free(g_cfg->match_re); |
| if (filter) |
| /* TODO: replace NULL */ |
| g_cfg->match_re = talloc_strdup(NULL, filter); |
| else |
| g_cfg->match_re = NULL; |
| |
| if (apn_len == 0) { |
| talloc_free(g_cfg->core_apn); |
| /* TODO: replace NULL */ |
| g_cfg->core_apn = talloc_zero_size(NULL, 2); |
| g_cfg->core_apn_size = 0; |
| } else { |
| /* TODO: replace NULL */ |
| g_cfg->core_apn = |
| talloc_realloc_size(NULL, g_cfg->core_apn, apn_len + 1); |
| g_cfg->core_apn_size = |
| gbprox_str_to_apn(g_cfg->core_apn, apn, apn_len + 1); |
| } |
| |
| return CMD_SUCCESS; |
| } |
| |
| DEFUN(cfg_gbproxy_core_apn, |
| cfg_gbproxy_core_apn_cmd, |
| "core-access-point-name (APN|none)", |
| GBPROXY_CORE_APN_STR GBPROXY_CORE_APN_ARG_STR) |
| { |
| if (strcmp(argv[0], "none") == 0) |
| return set_core_apn(vty, "", NULL); |
| else |
| return set_core_apn(vty, argv[0], NULL); |
| } |
| |
| DEFUN(cfg_gbproxy_core_apn_match, |
| cfg_gbproxy_core_apn_match_cmd, |
| "core-access-point-name (APN|none) match-imsi .REGEXP", |
| GBPROXY_CORE_APN_STR GBPROXY_CORE_APN_ARG_STR |
| "Only modify if the IMSI matches\n" |
| "Regular expression for the match\n") |
| { |
| if (strcmp(argv[0], "none") == 0) |
| return set_core_apn(vty, "", argv[1]); |
| else |
| return set_core_apn(vty, argv[0], argv[1]); |
| } |
| |
| DEFUN(cfg_gbproxy_no_core_apn, |
| cfg_gbproxy_no_core_apn_cmd, |
| "no core-access-point-name", |
| NO_STR GBPROXY_CORE_APN_STR) |
| { |
| return set_core_apn(vty, NULL, NULL); |
| } |
| |
| #define GBPROXY_TLLI_LIST_STR "Set TLLI list parameters\n" |
| #define GBPROXY_MAX_AGE_STR "Limit maximum age\n" |
| |
| DEFUN(cfg_gbproxy_tlli_list_max_age, |
| cfg_gbproxy_tlli_list_max_age_cmd, |
| "tlli-list max-age <1-999999>", |
| GBPROXY_TLLI_LIST_STR GBPROXY_MAX_AGE_STR |
| "Maximum age in seconds\n") |
| { |
| g_cfg->tlli_max_age = atoi(argv[0]); |
| |
| return CMD_SUCCESS; |
| } |
| |
| DEFUN(cfg_gbproxy_tlli_list_no_max_age, |
| cfg_gbproxy_tlli_list_no_max_age_cmd, |
| "no tlli-list max-age", |
| NO_STR GBPROXY_TLLI_LIST_STR GBPROXY_MAX_AGE_STR) |
| { |
| g_cfg->tlli_max_age = 0; |
| |
| return CMD_SUCCESS; |
| } |
| |
| #define GBPROXY_MAX_LEN_STR "Limit list length\n" |
| |
| DEFUN(cfg_gbproxy_tlli_list_max_len, |
| cfg_gbproxy_tlli_list_max_len_cmd, |
| "tlli-list max-length <1-99999>", |
| GBPROXY_TLLI_LIST_STR GBPROXY_MAX_LEN_STR |
| "Maximum number of TLLIs in the list\n") |
| { |
| g_cfg->tlli_max_len = atoi(argv[0]); |
| |
| return CMD_SUCCESS; |
| } |
| |
| DEFUN(cfg_gbproxy_tlli_list_no_max_len, |
| cfg_gbproxy_tlli_list_no_max_len_cmd, |
| "no tlli-list max-length", |
| NO_STR GBPROXY_TLLI_LIST_STR GBPROXY_MAX_LEN_STR) |
| { |
| g_cfg->tlli_max_len = 0; |
| |
| return CMD_SUCCESS; |
| } |
| |
| |
| DEFUN(cfg_gbproxy_patch_mode, |
| cfg_gbproxy_patch_mode_cmd, |
| "patch-mode (default|bssgp|llc-attach-req|llc-attach|llc-gmm|llc-gsm|llc)", |
| "Set patch mode\n" |
| "Use build-in default (best effort, try to patch everything)\n" |
| "Only patch BSSGP headers\n" |
| "Patch BSSGP headers and LLC Attach Request messages\n" |
| "Patch BSSGP headers and LLC Attach Request/Accept messages\n" |
| "Patch BSSGP headers and LLC GMM messages\n" |
| "Patch BSSGP headers, LLC GMM, and LLC GSM messages\n" |
| "Patch BSSGP headers and all supported LLC messages\n" |
| ) |
| { |
| int val = get_string_value(patch_modes, argv[0]); |
| OSMO_ASSERT(val >= 0); |
| g_cfg->patch_mode = val; |
| return CMD_SUCCESS; |
| } |
| |
| |
| |
| int gbproxy_vty_init(void) |
| { |
| install_element_ve(&show_gbproxy_cmd); |
| install_element_ve(&show_gbproxy_tllis_cmd); |
| |
| install_element(ENABLE_NODE, &delete_gb_bvci_cmd); |
| install_element(ENABLE_NODE, &delete_gb_nsei_cmd); |
| install_element(ENABLE_NODE, &delete_gb_tlli_cmd); |
| |
| install_element(CONFIG_NODE, &cfg_gbproxy_cmd); |
| install_node(&gbproxy_node, config_write_gbproxy); |
| vty_install_default(GBPROXY_NODE); |
| install_element(GBPROXY_NODE, &cfg_nsip_sgsn_nsei_cmd); |
| install_element(GBPROXY_NODE, &cfg_gbproxy_core_mcc_cmd); |
| install_element(GBPROXY_NODE, &cfg_gbproxy_core_mnc_cmd); |
| install_element(GBPROXY_NODE, &cfg_gbproxy_core_apn_cmd); |
| install_element(GBPROXY_NODE, &cfg_gbproxy_core_apn_match_cmd); |
| install_element(GBPROXY_NODE, &cfg_gbproxy_tlli_list_max_age_cmd); |
| install_element(GBPROXY_NODE, &cfg_gbproxy_tlli_list_max_len_cmd); |
| install_element(GBPROXY_NODE, &cfg_gbproxy_no_core_mcc_cmd); |
| install_element(GBPROXY_NODE, &cfg_gbproxy_no_core_mnc_cmd); |
| install_element(GBPROXY_NODE, &cfg_gbproxy_no_core_apn_cmd); |
| install_element(GBPROXY_NODE, &cfg_gbproxy_tlli_list_no_max_age_cmd); |
| install_element(GBPROXY_NODE, &cfg_gbproxy_tlli_list_no_max_len_cmd); |
| install_element(GBPROXY_NODE, &cfg_gbproxy_patch_mode_cmd); |
| |
| return 0; |
| } |
| |
| int gbproxy_parse_config(const char *config_file, struct gbproxy_config *cfg) |
| { |
| int rc; |
| |
| g_cfg = cfg; |
| rc = vty_read_config_file(config_file, NULL); |
| if (rc < 0) { |
| fprintf(stderr, "Failed to parse the config file: '%s'\n", config_file); |
| return rc; |
| } |
| |
| return 0; |
| } |
| |