Neels Hofmeyr | 407925d | 2019-11-20 03:35:37 +0100 | [diff] [blame^] | 1 | /* Copyright 2019 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> |
| 2 | * |
| 3 | * All Rights Reserved |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU Affero General Public License as published by |
| 7 | * the Free Software Foundation; either version 3 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU Affero General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU Affero General Public License |
| 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | * |
| 18 | */ |
| 19 | |
| 20 | #include <osmocom/vty/vty.h> |
| 21 | #include <osmocom/vty/command.h> |
| 22 | #include <osmocom/mslookup/mslookup_client_mdns.h> |
| 23 | #include <osmocom/mslookup/mdns.h> |
| 24 | #include <osmocom/hlr/hlr_vty.h> |
| 25 | #include <osmocom/hlr/mslookup_server.h> |
| 26 | #include <osmocom/hlr/mslookup_server_mdns.h> |
| 27 | #include <osmocom/gsupclient/cni_peer_id.h> |
| 28 | |
| 29 | struct cmd_node mslookup_node = { |
| 30 | MSLOOKUP_NODE, |
| 31 | "%s(config-mslookup)# ", |
| 32 | 1, |
| 33 | }; |
| 34 | |
| 35 | DEFUN(cfg_mslookup, |
| 36 | cfg_mslookup_cmd, |
| 37 | "mslookup", |
| 38 | "Configure Distributed GSM mslookup") |
| 39 | { |
| 40 | vty->node = MSLOOKUP_NODE; |
| 41 | return CMD_SUCCESS; |
| 42 | } |
| 43 | |
| 44 | static int mslookup_server_mdns_bind(struct vty *vty, int argc, const char **argv) |
| 45 | { |
| 46 | const char *ip_str = argc > 0? argv[0] : g_hlr->mslookup.server.mdns.bind_addr.ip; |
| 47 | const char *port_str = argc > 1? argv[1] : NULL; |
| 48 | uint16_t port_nr = port_str ? atoi(port_str) : g_hlr->mslookup.server.mdns.bind_addr.port; |
| 49 | struct osmo_sockaddr_str addr; |
| 50 | if (osmo_sockaddr_str_from_str(&addr, ip_str, port_nr) |
| 51 | || !osmo_sockaddr_str_is_nonzero(&addr)) { |
| 52 | vty_out(vty, "%% mslookup server: Invalid mDNS bind address: %s %u%s", |
| 53 | ip_str, port_nr, VTY_NEWLINE); |
| 54 | return CMD_WARNING; |
| 55 | } |
| 56 | |
| 57 | g_hlr->mslookup.server.mdns.bind_addr = addr; |
| 58 | g_hlr->mslookup.server.mdns.enable = true; |
| 59 | g_hlr->mslookup.server.enable = true; |
| 60 | mslookup_server_mdns_config_apply(); |
| 61 | return CMD_SUCCESS; |
| 62 | } |
| 63 | |
| 64 | #define MDNS_STR "Multicast DNS related configuration\n" |
| 65 | #define MDNS_IP46_STR "multicast IPv4 address like " OSMO_MSLOOKUP_MDNS_IP4 \ |
| 66 | " or IPv6 address like " OSMO_MSLOOKUP_MDNS_IP6 "\n" |
| 67 | #define MDNS_PORT_STR "mDNS UDP Port number\n" |
| 68 | #define MDNS_DOMAIN_SUFFIX_STR "mDNS domain suffix (default: " OSMO_MDNS_DOMAIN_SUFFIX_DEFAULT "). This is appended" \ |
| 69 | " and stripped from mDNS packets during encoding/decoding, so we don't collide with" \ |
| 70 | " top-level domains administrated by IANA\n" |
| 71 | #define IP46_STR "IPv4 address like 1.2.3.4 or IPv6 address like a:b:c:d::1\n" |
| 72 | #define PORT_STR "Service-specific port number\n" |
| 73 | |
| 74 | struct cmd_node mslookup_server_node = { |
| 75 | MSLOOKUP_SERVER_NODE, |
| 76 | "%s(config-mslookup-server)# ", |
| 77 | 1, |
| 78 | }; |
| 79 | |
| 80 | DEFUN(cfg_mslookup_server, |
| 81 | cfg_mslookup_server_cmd, |
| 82 | "server", |
| 83 | "Enable and configure Distributed GSM mslookup server") |
| 84 | { |
| 85 | vty->node = MSLOOKUP_SERVER_NODE; |
| 86 | g_hlr->mslookup.server.enable = true; |
| 87 | mslookup_server_mdns_config_apply(); |
| 88 | return CMD_SUCCESS; |
| 89 | } |
| 90 | |
| 91 | DEFUN(cfg_mslookup_no_server, |
| 92 | cfg_mslookup_no_server_cmd, |
| 93 | "no server", |
| 94 | NO_STR "Disable Distributed GSM mslookup server") |
| 95 | { |
| 96 | g_hlr->mslookup.server.enable = false; |
| 97 | mslookup_server_mdns_config_apply(); |
| 98 | return CMD_SUCCESS; |
| 99 | } |
| 100 | |
| 101 | DEFUN(cfg_mslookup_server_mdns_bind, |
| 102 | cfg_mslookup_server_mdns_bind_cmd, |
| 103 | "mdns bind [IP] [<1-65535>]", |
| 104 | MDNS_STR |
| 105 | "Configure where the mDNS server listens for mslookup requests\n" |
| 106 | MDNS_IP46_STR MDNS_PORT_STR) |
| 107 | { |
| 108 | return mslookup_server_mdns_bind(vty, argc, argv); |
| 109 | } |
| 110 | |
| 111 | DEFUN(cfg_mslookup_server_mdns_domain_suffix, |
| 112 | cfg_mslookup_server_mdns_domain_suffix_cmd, |
| 113 | "mdns domain-suffix DOMAIN_SUFFIX", |
| 114 | MDNS_STR |
| 115 | MDNS_DOMAIN_SUFFIX_STR |
| 116 | MDNS_DOMAIN_SUFFIX_STR) |
| 117 | { |
| 118 | osmo_talloc_replace_string(g_hlr, &g_hlr->mslookup.server.mdns.domain_suffix, argv[0]); |
| 119 | mslookup_server_mdns_config_apply(); |
| 120 | return CMD_SUCCESS; |
| 121 | } |
| 122 | |
| 123 | DEFUN(cfg_mslookup_server_no_mdns_bind, |
| 124 | cfg_mslookup_server_no_mdns_bind_cmd, |
| 125 | "no mdns bind", |
| 126 | NO_STR "Disable server for mDNS mslookup (do not answer remote requests)\n") |
| 127 | { |
| 128 | g_hlr->mslookup.server.mdns.enable = false; |
| 129 | mslookup_server_mdns_config_apply(); |
| 130 | return CMD_SUCCESS; |
| 131 | } |
| 132 | |
| 133 | struct cmd_node mslookup_server_msc_node = { |
| 134 | MSLOOKUP_SERVER_MSC_NODE, |
| 135 | "%s(config-mslookup-server-msc)# ", |
| 136 | 1, |
| 137 | }; |
| 138 | |
| 139 | DEFUN(cfg_mslookup_server_msc, |
| 140 | cfg_mslookup_server_msc_cmd, |
| 141 | "msc ipa-name .IPA_NAME", |
| 142 | "Configure services for individual local MSCs\n" |
| 143 | "Identify locally connected MSC by IPA Unit Name\n" |
| 144 | "IPA Unit Name of the local MSC to configure\n") |
| 145 | { |
| 146 | struct osmo_ipa_name msc_name; |
| 147 | struct mslookup_server_msc_cfg *msc; |
| 148 | osmo_ipa_name_set_str(&msc_name, argv_concat(argv, argc, 0)); |
| 149 | |
| 150 | msc = mslookup_server_msc_get(&msc_name, true); |
| 151 | if (!msc) { |
| 152 | vty_out(vty, "%% Error creating MSC %s%s", osmo_ipa_name_to_str(&msc_name), VTY_NEWLINE); |
| 153 | return CMD_WARNING; |
| 154 | } |
| 155 | vty->node = MSLOOKUP_SERVER_MSC_NODE; |
| 156 | vty->index = msc; |
| 157 | return CMD_SUCCESS; |
| 158 | } |
| 159 | |
| 160 | #define SERVICE_NAME_STR \ |
| 161 | "mslookup service name, e.g. sip.voice or smpp.sms\n" |
| 162 | |
| 163 | static struct mslookup_server_msc_cfg *msc_from_node(struct vty *vty) |
| 164 | { |
| 165 | switch (vty->node) { |
| 166 | case MSLOOKUP_SERVER_NODE: |
| 167 | /* On the mslookup.server node, set services on the wildcard msc, without a particular name. */ |
| 168 | return mslookup_server_msc_get(&mslookup_server_msc_wildcard, true); |
| 169 | case MSLOOKUP_SERVER_MSC_NODE: |
| 170 | return vty->index; |
| 171 | default: |
| 172 | return NULL; |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | DEFUN(cfg_mslookup_server_msc_service, |
| 177 | cfg_mslookup_server_msc_service_cmd, |
| 178 | "service NAME at IP <1-65535>", |
| 179 | "Configure addresses of local services, as sent in replies to remote mslookup requests.\n" |
| 180 | SERVICE_NAME_STR "at\n" IP46_STR PORT_STR) |
| 181 | { |
| 182 | /* If this command is run on the 'server' node, it produces an empty unit name and serves as wildcard for all |
| 183 | * MSCs. If on a 'server' / 'msc' node, set services only for that MSC Unit Name. */ |
| 184 | struct mslookup_server_msc_cfg *msc = msc_from_node(vty); |
| 185 | const char *service = argv[0]; |
| 186 | const char *ip_str = argv[1]; |
| 187 | const char *port_str = argv[2]; |
| 188 | struct osmo_sockaddr_str addr; |
| 189 | |
| 190 | if (!msc) { |
| 191 | vty_out(vty, "%% Error: no MSC object on this node%s", VTY_NEWLINE); |
| 192 | return CMD_WARNING; |
| 193 | } |
| 194 | |
| 195 | if (osmo_sockaddr_str_from_str(&addr, ip_str, atoi(port_str)) |
| 196 | || !osmo_sockaddr_str_is_nonzero(&addr)) { |
| 197 | vty_out(vty, "%% mslookup server: Invalid address for service %s: %s %s%s", |
| 198 | service, ip_str, port_str, VTY_NEWLINE); |
| 199 | return CMD_WARNING; |
| 200 | } |
| 201 | |
| 202 | if (mslookup_server_msc_service_set(msc, service, &addr)) { |
| 203 | vty_out(vty, "%% mslookup server: Error setting service %s to %s %s%s", |
| 204 | service, ip_str, port_str, VTY_NEWLINE); |
| 205 | return CMD_WARNING; |
| 206 | } |
| 207 | return CMD_SUCCESS; |
| 208 | } |
| 209 | |
| 210 | #define NO_SERVICE_AND_NAME_STR NO_STR "Remove one or more service address entries\n" SERVICE_NAME_STR |
| 211 | |
| 212 | DEFUN(cfg_mslookup_server_msc_no_service, |
| 213 | cfg_mslookup_server_msc_no_service_cmd, |
| 214 | "no service NAME", |
| 215 | NO_SERVICE_AND_NAME_STR) |
| 216 | { |
| 217 | /* If this command is run on the 'server' node, it produces an empty unit name and serves as wildcard for all |
| 218 | * MSCs. If on a 'server' / 'msc' node, set services only for that MSC Unit Name. */ |
| 219 | struct mslookup_server_msc_cfg *msc = msc_from_node(vty); |
| 220 | const char *service = argv[0]; |
| 221 | |
| 222 | if (!msc) { |
| 223 | vty_out(vty, "%% Error: no MSC object on this node%s", VTY_NEWLINE); |
| 224 | return CMD_WARNING; |
| 225 | } |
| 226 | |
| 227 | if (mslookup_server_msc_service_del(msc, service, NULL) < 1) { |
| 228 | vty_out(vty, "%% mslookup server: cannot remove service '%s'%s", |
| 229 | service, VTY_NEWLINE); |
| 230 | return CMD_WARNING; |
| 231 | } |
| 232 | return CMD_SUCCESS; |
| 233 | } |
| 234 | |
| 235 | DEFUN(cfg_mslookup_server_msc_no_service_addr, |
| 236 | cfg_mslookup_server_msc_no_service_addr_cmd, |
| 237 | "no service NAME at IP <1-65535>", |
| 238 | NO_SERVICE_AND_NAME_STR "at\n" IP46_STR PORT_STR) |
| 239 | { |
| 240 | /* If this command is run on the 'server' node, it produces an empty unit name and serves as wildcard for all |
| 241 | * MSCs. If on a 'server' / 'msc' node, set services only for that MSC Unit Name. */ |
| 242 | struct mslookup_server_msc_cfg *msc = msc_from_node(vty); |
| 243 | const char *service = argv[0]; |
| 244 | const char *ip_str = argv[1]; |
| 245 | const char *port_str = argv[2]; |
| 246 | struct osmo_sockaddr_str addr; |
| 247 | |
| 248 | if (!msc) { |
| 249 | vty_out(vty, "%% Error: no MSC object on this node%s", VTY_NEWLINE); |
| 250 | return CMD_WARNING; |
| 251 | } |
| 252 | |
| 253 | if (osmo_sockaddr_str_from_str(&addr, ip_str, atoi(port_str)) |
| 254 | || !osmo_sockaddr_str_is_nonzero(&addr)) { |
| 255 | vty_out(vty, "%% mslookup server: Invalid address for 'no service' %s: %s %s%s", |
| 256 | service, ip_str, port_str, VTY_NEWLINE); |
| 257 | return CMD_WARNING; |
| 258 | } |
| 259 | |
| 260 | if (mslookup_server_msc_service_del(msc, service, &addr) < 1) { |
| 261 | vty_out(vty, "%% mslookup server: cannot remove service '%s' to %s %s%s", |
| 262 | service, ip_str, port_str, VTY_NEWLINE); |
| 263 | return CMD_WARNING; |
| 264 | } |
| 265 | return CMD_SUCCESS; |
| 266 | } |
| 267 | |
| 268 | void config_write_msc_services(struct vty *vty, const char *indent, struct mslookup_server_msc_cfg *msc) |
| 269 | { |
| 270 | struct mslookup_service_host *e; |
| 271 | |
| 272 | llist_for_each_entry(e, &msc->service_hosts, entry) { |
| 273 | if (osmo_sockaddr_str_is_nonzero(&e->host_v4)) |
| 274 | vty_out(vty, "%sservice %s at %s %u%s", indent, e->service, e->host_v4.ip, e->host_v4.port, |
| 275 | VTY_NEWLINE); |
| 276 | if (osmo_sockaddr_str_is_nonzero(&e->host_v6)) |
| 277 | vty_out(vty, "%sservice %s at %s %u%s", indent, e->service, e->host_v6.ip, e->host_v6.port, |
| 278 | VTY_NEWLINE); |
| 279 | } |
| 280 | } |
| 281 | |
| 282 | int config_write_mslookup(struct vty *vty) |
| 283 | { |
| 284 | if (!g_hlr->mslookup.server.enable |
| 285 | && llist_empty(&g_hlr->mslookup.server.local_site_services)) |
| 286 | return CMD_SUCCESS; |
| 287 | |
| 288 | vty_out(vty, "mslookup%s", VTY_NEWLINE); |
| 289 | |
| 290 | if (g_hlr->mslookup.server.enable || !llist_empty(&g_hlr->mslookup.server.local_site_services)) { |
| 291 | struct mslookup_server_msc_cfg *msc; |
| 292 | |
| 293 | vty_out(vty, " server%s", VTY_NEWLINE); |
| 294 | |
| 295 | if (g_hlr->mslookup.server.mdns.enable) { |
| 296 | vty_out(vty, " mdns bind"); |
| 297 | if (osmo_sockaddr_str_is_nonzero(&g_hlr->mslookup.server.mdns.bind_addr)) { |
| 298 | vty_out(vty, " %s %u", |
| 299 | g_hlr->mslookup.server.mdns.bind_addr.ip, |
| 300 | g_hlr->mslookup.server.mdns.bind_addr.port); |
| 301 | } |
| 302 | vty_out(vty, "%s", VTY_NEWLINE); |
| 303 | } |
| 304 | if (strcmp(g_hlr->mslookup.server.mdns.domain_suffix, OSMO_MDNS_DOMAIN_SUFFIX_DEFAULT)) |
| 305 | vty_out(vty, " mdns domain-suffix %s%s", |
| 306 | g_hlr->mslookup.server.mdns.domain_suffix, |
| 307 | VTY_NEWLINE); |
| 308 | |
| 309 | msc = mslookup_server_msc_get(&mslookup_server_msc_wildcard, false); |
| 310 | if (msc) |
| 311 | config_write_msc_services(vty, " ", msc); |
| 312 | |
| 313 | llist_for_each_entry(msc, &g_hlr->mslookup.server.local_site_services, entry) { |
| 314 | if (!osmo_ipa_name_cmp(&mslookup_server_msc_wildcard, &msc->name)) |
| 315 | continue; |
| 316 | vty_out(vty, " msc %s%s", osmo_ipa_name_to_str(&msc->name), VTY_NEWLINE); |
| 317 | config_write_msc_services(vty, " ", msc); |
| 318 | } |
| 319 | |
| 320 | /* If the server is disabled, still output the above to not lose the service config. */ |
| 321 | if (!g_hlr->mslookup.server.enable) |
| 322 | vty_out(vty, " no server%s", VTY_NEWLINE); |
| 323 | } |
| 324 | |
| 325 | return CMD_SUCCESS; |
| 326 | } |
| 327 | |
| 328 | DEFUN(do_mslookup_show_services, |
| 329 | do_mslookup_show_services_cmd, |
| 330 | "show mslookup services", |
| 331 | SHOW_STR "Distributed GSM / mslookup related information\n" |
| 332 | "List configured service addresses as sent to remote mslookup requests\n") |
| 333 | { |
| 334 | struct mslookup_server_msc_cfg *msc; |
| 335 | const struct mslookup_service_host *local_hlr = mslookup_server_get_local_gsup_addr(); |
| 336 | |
| 337 | vty_out(vty, "Local GSUP HLR address returned in mslookup responses for local IMSIs:"); |
| 338 | if (osmo_sockaddr_str_is_nonzero(&local_hlr->host_v4)) |
| 339 | vty_out(vty, " " OSMO_SOCKADDR_STR_FMT, |
| 340 | OSMO_SOCKADDR_STR_FMT_ARGS(&local_hlr->host_v4)); |
| 341 | if (osmo_sockaddr_str_is_nonzero(&local_hlr->host_v6)) |
| 342 | vty_out(vty, " " OSMO_SOCKADDR_STR_FMT, |
| 343 | OSMO_SOCKADDR_STR_FMT_ARGS(&local_hlr->host_v6)); |
| 344 | vty_out(vty, "%s", VTY_NEWLINE); |
| 345 | |
| 346 | msc = mslookup_server_msc_get(&mslookup_server_msc_wildcard, false); |
| 347 | if (msc) |
| 348 | config_write_msc_services(vty, "", msc); |
| 349 | |
| 350 | llist_for_each_entry(msc, &g_hlr->mslookup.server.local_site_services, entry) { |
| 351 | if (!osmo_ipa_name_cmp(&mslookup_server_msc_wildcard, &msc->name)) |
| 352 | continue; |
| 353 | vty_out(vty, "msc ipa-name %s%s", osmo_ipa_name_to_str(&msc->name), VTY_NEWLINE); |
| 354 | config_write_msc_services(vty, " ", msc); |
| 355 | } |
| 356 | return CMD_SUCCESS; |
| 357 | } |
| 358 | |
| 359 | void dgsm_vty_init(void) |
| 360 | { |
| 361 | install_element(CONFIG_NODE, &cfg_mslookup_cmd); |
| 362 | |
| 363 | install_node(&mslookup_node, config_write_mslookup); |
| 364 | install_element(MSLOOKUP_NODE, &cfg_mslookup_server_cmd); |
| 365 | install_element(MSLOOKUP_NODE, &cfg_mslookup_no_server_cmd); |
| 366 | |
| 367 | install_node(&mslookup_server_node, NULL); |
| 368 | install_element(MSLOOKUP_SERVER_NODE, &cfg_mslookup_server_mdns_bind_cmd); |
| 369 | install_element(MSLOOKUP_SERVER_NODE, &cfg_mslookup_server_mdns_domain_suffix_cmd); |
| 370 | install_element(MSLOOKUP_SERVER_NODE, &cfg_mslookup_server_no_mdns_bind_cmd); |
| 371 | install_element(MSLOOKUP_SERVER_NODE, &cfg_mslookup_server_msc_service_cmd); |
| 372 | install_element(MSLOOKUP_SERVER_NODE, &cfg_mslookup_server_msc_no_service_cmd); |
| 373 | install_element(MSLOOKUP_SERVER_NODE, &cfg_mslookup_server_msc_no_service_addr_cmd); |
| 374 | install_element(MSLOOKUP_SERVER_NODE, &cfg_mslookup_server_msc_cmd); |
| 375 | |
| 376 | install_node(&mslookup_server_msc_node, NULL); |
| 377 | install_element(MSLOOKUP_SERVER_MSC_NODE, &cfg_mslookup_server_msc_service_cmd); |
| 378 | install_element(MSLOOKUP_SERVER_MSC_NODE, &cfg_mslookup_server_msc_no_service_cmd); |
| 379 | install_element(MSLOOKUP_SERVER_MSC_NODE, &cfg_mslookup_server_msc_no_service_addr_cmd); |
| 380 | |
| 381 | install_element_ve(&do_mslookup_show_services_cmd); |
| 382 | } |