Neels Hofmeyr | 17518fe | 2017-06-20 04:35:06 +0200 | [diff] [blame] | 1 | /*! \file control_cmd.c |
| 2 | * SNMP-like status interface. */ |
| 3 | /* |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 4 | * (C) 2010-2011 by Daniel Willmann <daniel@totalueberwachung.de> |
| 5 | * (C) 2010-2011 by On-Waves |
| 6 | * |
| 7 | * All Rights Reserved |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License along |
| 20 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 21 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 22 | * |
| 23 | */ |
| 24 | |
| 25 | #include <ctype.h> |
| 26 | #include <errno.h> |
| 27 | #include <stdio.h> |
| 28 | #include <stdlib.h> |
| 29 | #include <string.h> |
| 30 | #include <time.h> |
| 31 | #include <unistd.h> |
| 32 | |
Harald Welte | 1238cc6 | 2014-08-20 19:50:04 +0200 | [diff] [blame] | 33 | #include <osmocom/ctrl/control_cmd.h> |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 34 | |
| 35 | #include <osmocom/core/msgb.h> |
| 36 | #include <osmocom/core/talloc.h> |
Max | 70c7d41 | 2017-02-24 13:59:14 +0100 | [diff] [blame] | 37 | #include <osmocom/core/utils.h> |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 38 | #include <osmocom/vty/command.h> |
| 39 | #include <osmocom/vty/vector.h> |
| 40 | |
| 41 | extern vector ctrl_node_vec; |
| 42 | |
Max | 70c7d41 | 2017-02-24 13:59:14 +0100 | [diff] [blame] | 43 | const struct value_string ctrl_type_vals[] = { |
Neels Hofmeyr | 7c1ec8c | 2017-03-02 14:32:52 +0100 | [diff] [blame] | 44 | { CTRL_TYPE_UNKNOWN, "(unknown)" }, |
Max | 70c7d41 | 2017-02-24 13:59:14 +0100 | [diff] [blame] | 45 | { CTRL_TYPE_GET, "GET" }, |
| 46 | { CTRL_TYPE_SET, "SET" }, |
| 47 | { CTRL_TYPE_GET_REPLY, "GET_REPLY" }, |
| 48 | { CTRL_TYPE_SET_REPLY, "SET_REPLY" }, |
| 49 | { CTRL_TYPE_TRAP, "TRAP" }, |
| 50 | { CTRL_TYPE_ERROR, "ERROR" }, |
Neels Hofmeyr | 7c1ec8c | 2017-03-02 14:32:52 +0100 | [diff] [blame] | 51 | { 0, NULL } |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 52 | }; |
| 53 | |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 54 | /* Functions from libosmocom */ |
| 55 | extern vector cmd_make_descvec(const char *string, const char *descstr); |
| 56 | |
| 57 | /* Get the ctrl_cmd_element that matches this command */ |
| 58 | static struct ctrl_cmd_element *ctrl_cmd_get_element_match(vector vline, vector node) |
| 59 | { |
| 60 | int index, j; |
| 61 | const char *desc; |
| 62 | struct ctrl_cmd_element *cmd_el; |
| 63 | struct ctrl_cmd_struct *cmd_desc; |
| 64 | char *str; |
| 65 | |
| 66 | for (index = 0; index < vector_active(node); index++) { |
| 67 | if ((cmd_el = vector_slot(node, index))) { |
| 68 | cmd_desc = &cmd_el->strcmd; |
| 69 | if (cmd_desc->nr_commands > vector_active(vline)) |
| 70 | continue; |
Holger Hans Peter Freyther | 5fb265e | 2015-04-05 14:36:31 +0200 | [diff] [blame] | 71 | for (j =0; j < vector_active(vline) && j < cmd_desc->nr_commands; j++) { |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 72 | str = vector_slot(vline, j); |
| 73 | desc = cmd_desc->command[j]; |
| 74 | if (desc[0] == '*') |
| 75 | return cmd_el; /* Partial match */ |
| 76 | if (strcmp(desc, str) != 0) |
| 77 | break; |
| 78 | } |
| 79 | /* We went through all the elements and all matched */ |
| 80 | if (j == cmd_desc->nr_commands) |
| 81 | return cmd_el; |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | return NULL; |
| 86 | } |
| 87 | |
| 88 | int ctrl_cmd_exec(vector vline, struct ctrl_cmd *command, vector node, void *data) |
| 89 | { |
| 90 | int ret = CTRL_CMD_ERROR; |
| 91 | struct ctrl_cmd_element *cmd_el; |
| 92 | |
| 93 | if ((command->type != CTRL_TYPE_GET) && (command->type != CTRL_TYPE_SET)) { |
| 94 | command->reply = "Trying to execute something not GET or SET"; |
| 95 | goto out; |
| 96 | } |
| 97 | if ((command->type == CTRL_TYPE_SET) && (!command->value)) { |
| 98 | command->reply = "SET without a value"; |
| 99 | goto out; |
| 100 | } |
| 101 | |
| 102 | if (!vline) |
| 103 | goto out; |
| 104 | |
| 105 | cmd_el = ctrl_cmd_get_element_match(vline, node); |
| 106 | |
| 107 | if (!cmd_el) { |
| 108 | command->reply = "Command not found"; |
| 109 | goto out; |
| 110 | } |
| 111 | |
| 112 | if (command->type == CTRL_TYPE_SET) { |
| 113 | if (!cmd_el->set) { |
| 114 | command->reply = "SET not implemented"; |
| 115 | goto out; |
| 116 | } |
| 117 | if (cmd_el->verify) { |
| 118 | if ((ret = cmd_el->verify(command, command->value, data))) { |
| 119 | ret = CTRL_CMD_ERROR; |
Daniel Willmann | 9225ab1 | 2011-07-28 21:38:51 +0200 | [diff] [blame] | 120 | /* If verify() set an appropriate error message, don't change it. */ |
| 121 | if (!command->reply) |
| 122 | command->reply = "Value failed verification."; |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 123 | goto out; |
| 124 | } |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 125 | } |
| 126 | ret = cmd_el->set(command, data); |
| 127 | goto out; |
| 128 | } else if (command->type == CTRL_TYPE_GET) { |
| 129 | if (!cmd_el->get) { |
| 130 | command->reply = "GET not implemented"; |
| 131 | goto out; |
| 132 | } |
| 133 | ret = cmd_el->get(command, data); |
| 134 | goto out; |
| 135 | } |
| 136 | out: |
| 137 | if (ret == CTRL_CMD_REPLY) { |
| 138 | if (command->type == CTRL_TYPE_SET) { |
| 139 | command->type = CTRL_TYPE_SET_REPLY; |
| 140 | } else if (command->type == CTRL_TYPE_GET) { |
| 141 | command->type = CTRL_TYPE_GET_REPLY; |
| 142 | } |
| 143 | } else if (ret == CTRL_CMD_ERROR) { |
| 144 | command->type = CTRL_TYPE_ERROR; |
| 145 | } |
| 146 | return ret; |
| 147 | } |
| 148 | |
| 149 | static void add_word(struct ctrl_cmd_struct *cmd, |
| 150 | const char *start, const char *end) |
| 151 | { |
| 152 | if (!cmd->command) { |
| 153 | cmd->command = talloc_zero_array(tall_vty_vec_ctx, |
| 154 | char*, 1); |
| 155 | cmd->nr_commands = 0; |
| 156 | } else { |
| 157 | cmd->command = talloc_realloc(tall_vty_vec_ctx, |
| 158 | cmd->command, char*, |
| 159 | cmd->nr_commands + 1); |
| 160 | } |
| 161 | |
| 162 | cmd->command[cmd->nr_commands++] = talloc_strndup(cmd->command, |
| 163 | start, end - start); |
| 164 | } |
| 165 | |
| 166 | static void create_cmd_struct(struct ctrl_cmd_struct *cmd, const char *name) |
| 167 | { |
| 168 | const char *cur, *word; |
| 169 | |
| 170 | for (cur = name, word = NULL; cur[0] != '\0'; ++cur) { |
| 171 | /* warn about optionals */ |
| 172 | if (cur[0] == '(' || cur[0] == ')' || cur[0] == '|') { |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 173 | LOGP(DLCTRL, LOGL_ERROR, |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 174 | "Optionals are not supported in '%s'\n", name); |
| 175 | goto failure; |
| 176 | } |
| 177 | |
| 178 | if (isspace(cur[0])) { |
| 179 | if (word) { |
| 180 | add_word(cmd, word, cur); |
| 181 | word = NULL; |
| 182 | } |
| 183 | continue; |
| 184 | } |
| 185 | |
| 186 | if (!word) |
| 187 | word = cur; |
| 188 | } |
| 189 | |
| 190 | if (word) |
| 191 | add_word(cmd, word, cur); |
| 192 | |
| 193 | return; |
| 194 | failure: |
| 195 | cmd->nr_commands = 0; |
| 196 | talloc_free(cmd->command); |
| 197 | } |
| 198 | |
| 199 | int ctrl_cmd_install(enum ctrl_node_type node, struct ctrl_cmd_element *cmd) |
| 200 | { |
| 201 | vector cmds_vec; |
| 202 | |
| 203 | cmds_vec = vector_lookup_ensure(ctrl_node_vec, node); |
| 204 | |
| 205 | if (!cmds_vec) { |
| 206 | cmds_vec = vector_init(5); |
| 207 | if (!cmds_vec) { |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 208 | LOGP(DLCTRL, LOGL_ERROR, "vector_init failed.\n"); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 209 | return -ENOMEM; |
| 210 | } |
| 211 | vector_set_index(ctrl_node_vec, node, cmds_vec); |
| 212 | } |
| 213 | |
| 214 | vector_set(cmds_vec, cmd); |
| 215 | |
| 216 | create_cmd_struct(&cmd->strcmd, cmd->name); |
| 217 | return 0; |
| 218 | } |
| 219 | |
Holger Hans Peter Freyther | a6b3401 | 2011-08-22 23:44:32 +0200 | [diff] [blame] | 220 | struct ctrl_cmd *ctrl_cmd_create(void *ctx, enum ctrl_type type) |
| 221 | { |
| 222 | struct ctrl_cmd *cmd; |
| 223 | |
| 224 | cmd = talloc_zero(ctx, struct ctrl_cmd); |
| 225 | if (!cmd) |
| 226 | return NULL; |
| 227 | |
| 228 | cmd->type = type; |
| 229 | return cmd; |
| 230 | } |
| 231 | |
Daniel Willmann | 8b7a962 | 2011-03-17 15:37:54 +0100 | [diff] [blame] | 232 | struct ctrl_cmd *ctrl_cmd_cpy(void *ctx, struct ctrl_cmd *cmd) |
| 233 | { |
| 234 | struct ctrl_cmd *cmd2; |
| 235 | |
| 236 | cmd2 = talloc_zero(ctx, struct ctrl_cmd); |
| 237 | if (!cmd2) |
| 238 | return NULL; |
| 239 | |
| 240 | cmd2->type = cmd->type; |
| 241 | if (cmd->id) { |
| 242 | cmd2->id = talloc_strdup(cmd2, cmd->id); |
| 243 | if (!cmd2->id) |
| 244 | goto err; |
| 245 | } |
| 246 | if (cmd->variable) { |
| 247 | cmd2->variable = talloc_strdup(cmd2, cmd->variable); |
| 248 | if (!cmd2->variable) |
| 249 | goto err; |
| 250 | } |
| 251 | if (cmd->value) { |
| 252 | cmd2->value = talloc_strdup(cmd2, cmd->value); |
| 253 | if (!cmd2->value) |
| 254 | goto err; |
| 255 | } |
| 256 | if (cmd->reply) { |
| 257 | cmd2->reply = talloc_strdup(cmd2, cmd->reply); |
| 258 | if (!cmd2->reply) |
| 259 | goto err; |
| 260 | } |
| 261 | |
| 262 | return cmd2; |
| 263 | err: |
| 264 | talloc_free(cmd2); |
| 265 | return NULL; |
| 266 | } |
| 267 | |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 268 | struct ctrl_cmd *ctrl_cmd_parse(void *ctx, struct msgb *msg) |
| 269 | { |
| 270 | char *str, *tmp, *saveptr = NULL; |
| 271 | char *var, *val; |
| 272 | struct ctrl_cmd *cmd; |
| 273 | |
| 274 | cmd = talloc_zero(ctx, struct ctrl_cmd); |
| 275 | if (!cmd) { |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 276 | LOGP(DLCTRL, LOGL_ERROR, "Failed to allocate.\n"); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 277 | return NULL; |
| 278 | } |
| 279 | |
| 280 | /* Make sure input is NULL terminated */ |
| 281 | msgb_put_u8(msg, 0); |
| 282 | str = (char *) msg->l2h; |
| 283 | |
Harald Welte | edf6fe7 | 2016-11-26 10:06:07 +0100 | [diff] [blame] | 284 | OSMO_ASSERT(str); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 285 | tmp = strtok_r(str, " ", &saveptr); |
| 286 | if (!tmp) { |
| 287 | cmd->type = CTRL_TYPE_ERROR; |
| 288 | cmd->id = "err"; |
| 289 | cmd->reply = "Request malformed"; |
| 290 | goto err; |
| 291 | } |
| 292 | |
Max | 70c7d41 | 2017-02-24 13:59:14 +0100 | [diff] [blame] | 293 | cmd->type = get_string_value(ctrl_type_vals, tmp); |
Pau Espin Pedrol | 8aa85bd | 2017-06-23 12:43:31 +0200 | [diff] [blame] | 294 | if ((int)cmd->type < 0 || cmd->type == CTRL_TYPE_UNKNOWN) { |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 295 | cmd->type = CTRL_TYPE_ERROR; |
| 296 | cmd->id = "err"; |
| 297 | cmd->reply = "Request type unknown"; |
| 298 | goto err; |
| 299 | } |
| 300 | |
| 301 | tmp = strtok_r(NULL, " ", &saveptr); |
| 302 | |
| 303 | if (!tmp) { |
| 304 | cmd->type = CTRL_TYPE_ERROR; |
| 305 | cmd->id = "err"; |
| 306 | cmd->reply = "Missing ID"; |
| 307 | goto err; |
| 308 | } |
| 309 | cmd->id = talloc_strdup(cmd, tmp); |
| 310 | if (!cmd->id) |
| 311 | goto oom; |
| 312 | |
| 313 | switch (cmd->type) { |
| 314 | case CTRL_TYPE_GET: |
| 315 | var = strtok_r(NULL, " ", &saveptr); |
| 316 | if (!var) { |
| 317 | cmd->type = CTRL_TYPE_ERROR; |
| 318 | cmd->reply = "GET incomplete"; |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 319 | LOGP(DLCTRL, LOGL_NOTICE, "GET Command incomplete\n"); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 320 | goto err; |
| 321 | } |
| 322 | cmd->variable = talloc_strdup(cmd, var); |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 323 | LOGP(DLCTRL, LOGL_DEBUG, "Command: GET %s\n", cmd->variable); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 324 | break; |
| 325 | case CTRL_TYPE_SET: |
| 326 | var = strtok_r(NULL, " ", &saveptr); |
Holger Hans Peter Freyther | 5ad742d | 2014-08-08 19:41:28 +0200 | [diff] [blame] | 327 | val = strtok_r(NULL, "\n", &saveptr); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 328 | if (!var || !val) { |
| 329 | cmd->type = CTRL_TYPE_ERROR; |
| 330 | cmd->reply = "SET incomplete"; |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 331 | LOGP(DLCTRL, LOGL_NOTICE, "SET Command incomplete\n"); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 332 | goto err; |
| 333 | } |
| 334 | cmd->variable = talloc_strdup(cmd, var); |
| 335 | cmd->value = talloc_strdup(cmd, val); |
| 336 | if (!cmd->variable || !cmd->value) |
| 337 | goto oom; |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 338 | LOGP(DLCTRL, LOGL_DEBUG, "Command: SET %s = %s\n", cmd->variable, cmd->value); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 339 | break; |
| 340 | case CTRL_TYPE_GET_REPLY: |
| 341 | case CTRL_TYPE_SET_REPLY: |
| 342 | case CTRL_TYPE_TRAP: |
| 343 | var = strtok_r(NULL, " ", &saveptr); |
| 344 | val = strtok_r(NULL, " ", &saveptr); |
| 345 | if (!var || !val) { |
| 346 | cmd->type = CTRL_TYPE_ERROR; |
| 347 | cmd->reply = "Trap/Reply incomplete"; |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 348 | LOGP(DLCTRL, LOGL_NOTICE, "Trap/Reply incomplete\n"); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 349 | goto err; |
| 350 | } |
| 351 | cmd->variable = talloc_strdup(cmd, var); |
| 352 | cmd->reply = talloc_strdup(cmd, val); |
| 353 | if (!cmd->variable || !cmd->reply) |
| 354 | goto oom; |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 355 | LOGP(DLCTRL, LOGL_DEBUG, "Command: TRAP/REPLY %s: %s\n", cmd->variable, cmd->reply); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 356 | break; |
| 357 | case CTRL_TYPE_ERROR: |
| 358 | var = strtok_r(NULL, "\0", &saveptr); |
| 359 | if (!var) { |
| 360 | cmd->reply = ""; |
| 361 | goto err; |
| 362 | } |
| 363 | cmd->reply = talloc_strdup(cmd, var); |
| 364 | if (!cmd->reply) |
| 365 | goto oom; |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 366 | LOGP(DLCTRL, LOGL_DEBUG, "Command: ERROR %s\n", cmd->reply); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 367 | break; |
| 368 | case CTRL_TYPE_UNKNOWN: |
| 369 | default: |
| 370 | cmd->type = CTRL_TYPE_ERROR; |
| 371 | cmd->reply = "Unknown type"; |
| 372 | goto err; |
| 373 | } |
| 374 | |
| 375 | return cmd; |
| 376 | oom: |
| 377 | cmd->type = CTRL_TYPE_ERROR; |
| 378 | cmd->id = "err"; |
| 379 | cmd->reply = "OOM"; |
| 380 | err: |
| 381 | talloc_free(cmd); |
| 382 | return NULL; |
| 383 | } |
| 384 | |
| 385 | struct msgb *ctrl_cmd_make(struct ctrl_cmd *cmd) |
| 386 | { |
| 387 | struct msgb *msg; |
Max | 70c7d41 | 2017-02-24 13:59:14 +0100 | [diff] [blame] | 388 | const char *type; |
| 389 | char *tmp; |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 390 | |
| 391 | if (!cmd->id) |
| 392 | return NULL; |
| 393 | |
| 394 | msg = msgb_alloc_headroom(4096, 128, "ctrl command make"); |
| 395 | if (!msg) |
| 396 | return NULL; |
| 397 | |
Max | 70c7d41 | 2017-02-24 13:59:14 +0100 | [diff] [blame] | 398 | type = get_value_string(ctrl_type_vals, cmd->type); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 399 | |
| 400 | switch (cmd->type) { |
| 401 | case CTRL_TYPE_GET: |
| 402 | if (!cmd->variable) |
| 403 | goto err; |
| 404 | |
| 405 | tmp = talloc_asprintf(cmd, "%s %s %s", type, cmd->id, cmd->variable); |
| 406 | if (!tmp) { |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 407 | LOGP(DLCTRL, LOGL_ERROR, "Failed to allocate cmd.\n"); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 408 | goto err; |
| 409 | } |
| 410 | |
| 411 | msg->l2h = msgb_put(msg, strlen(tmp)); |
| 412 | memcpy(msg->l2h, tmp, strlen(tmp)); |
| 413 | talloc_free(tmp); |
| 414 | break; |
| 415 | case CTRL_TYPE_SET: |
| 416 | if (!cmd->variable || !cmd->value) |
| 417 | goto err; |
| 418 | |
| 419 | tmp = talloc_asprintf(cmd, "%s %s %s %s", type, cmd->id, cmd->variable, |
| 420 | cmd->value); |
| 421 | if (!tmp) { |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 422 | LOGP(DLCTRL, LOGL_ERROR, "Failed to allocate cmd.\n"); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 423 | goto err; |
| 424 | } |
| 425 | |
| 426 | msg->l2h = msgb_put(msg, strlen(tmp)); |
| 427 | memcpy(msg->l2h, tmp, strlen(tmp)); |
| 428 | talloc_free(tmp); |
| 429 | break; |
| 430 | case CTRL_TYPE_GET_REPLY: |
| 431 | case CTRL_TYPE_SET_REPLY: |
| 432 | case CTRL_TYPE_TRAP: |
| 433 | if (!cmd->variable || !cmd->reply) |
| 434 | goto err; |
| 435 | |
| 436 | tmp = talloc_asprintf(cmd, "%s %s %s %s", type, cmd->id, cmd->variable, |
| 437 | cmd->reply); |
| 438 | if (!tmp) { |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 439 | LOGP(DLCTRL, LOGL_ERROR, "Failed to allocate cmd.\n"); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 440 | goto err; |
| 441 | } |
| 442 | |
| 443 | msg->l2h = msgb_put(msg, strlen(tmp)); |
| 444 | memcpy(msg->l2h, tmp, strlen(tmp)); |
| 445 | talloc_free(tmp); |
| 446 | break; |
| 447 | case CTRL_TYPE_ERROR: |
| 448 | if (!cmd->reply) |
| 449 | goto err; |
| 450 | |
| 451 | tmp = talloc_asprintf(cmd, "%s %s %s", type, cmd->id, |
| 452 | cmd->reply); |
| 453 | if (!tmp) { |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 454 | LOGP(DLCTRL, LOGL_ERROR, "Failed to allocate cmd.\n"); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 455 | goto err; |
| 456 | } |
| 457 | |
| 458 | msg->l2h = msgb_put(msg, strlen(tmp)); |
| 459 | memcpy(msg->l2h, tmp, strlen(tmp)); |
| 460 | talloc_free(tmp); |
| 461 | break; |
| 462 | default: |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 463 | LOGP(DLCTRL, LOGL_NOTICE, "Unknown command type %i\n", cmd->type); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 464 | goto err; |
| 465 | break; |
| 466 | } |
| 467 | |
| 468 | return msg; |
| 469 | |
| 470 | err: |
| 471 | msgb_free(msg); |
| 472 | return NULL; |
| 473 | } |
Harald Welte | 39c9e7b | 2014-08-22 00:28:51 +0200 | [diff] [blame] | 474 | |
| 475 | struct ctrl_cmd_def * |
| 476 | ctrl_cmd_def_make(const void *ctx, struct ctrl_cmd *cmd, void *data, unsigned int secs) |
| 477 | { |
| 478 | struct ctrl_cmd_def *cd; |
| 479 | |
| 480 | if (!cmd->ccon) |
| 481 | return NULL; |
| 482 | |
| 483 | cd = talloc_zero(ctx, struct ctrl_cmd_def); |
| 484 | |
| 485 | cd->cmd = cmd; |
| 486 | cd->data = data; |
| 487 | |
| 488 | /* add to per-connection list of deferred commands */ |
| 489 | llist_add(&cd->list, &cmd->ccon->def_cmds); |
| 490 | |
| 491 | return cd; |
| 492 | } |
| 493 | |
| 494 | int ctrl_cmd_def_is_zombie(struct ctrl_cmd_def *cd) |
| 495 | { |
| 496 | /* luckily we're still alive */ |
| 497 | if (cd->cmd) |
| 498 | return 0; |
| 499 | |
| 500 | /* if we are a zombie, make sure we really die */ |
| 501 | llist_del(&cd->list); |
| 502 | talloc_free(cd); |
| 503 | |
| 504 | return 1; |
| 505 | } |
| 506 | |
| 507 | int ctrl_cmd_def_send(struct ctrl_cmd_def *cd) |
| 508 | { |
| 509 | struct ctrl_cmd *cmd = cd->cmd; |
| 510 | |
| 511 | int rc; |
| 512 | |
| 513 | /* Deferred commands can only be responses to GET/SET or ERROR, but |
| 514 | * never TRAP or anything else */ |
| 515 | switch (cmd->type) { |
| 516 | case CTRL_TYPE_GET: |
| 517 | cmd->type = CTRL_TYPE_GET_REPLY; |
| 518 | break; |
| 519 | case CTRL_TYPE_SET: |
| 520 | cmd->type = CTRL_TYPE_SET_REPLY; |
| 521 | break; |
| 522 | default: |
| 523 | cmd->type = CTRL_TYPE_ERROR; |
| 524 | } |
| 525 | |
| 526 | rc = ctrl_cmd_send(&cmd->ccon->write_queue, cmd); |
| 527 | |
| 528 | talloc_free(cmd); |
| 529 | llist_del(&cd->list); |
| 530 | talloc_free(cd); |
| 531 | |
| 532 | return rc; |
| 533 | } |