Neels Hofmeyr | 17518fe | 2017-06-20 04:35:06 +0200 | [diff] [blame] | 1 | /*! \file control_if.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 |
Harald Welte | e08da97 | 2017-11-13 01:00:26 +0900 | [diff] [blame] | 6 | * (C) 2014 by Harald Welte <laforge@gnumonks.org> |
| 7 | * (C) 2016-2017 by sysmocom - s.f.m.c. GmbH |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 8 | * |
| 9 | * All Rights Reserved |
| 10 | * |
Harald Welte | e08da97 | 2017-11-13 01:00:26 +0900 | [diff] [blame] | 11 | * SPDX-License-Identifier: GPL-2.0+ |
| 12 | * |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 13 | * This program is free software; you can redistribute it and/or modify |
| 14 | * it under the terms of the GNU General Public License as published by |
| 15 | * the Free Software Foundation; either version 2 of the License, or |
| 16 | * (at your option) any later version. |
| 17 | * |
| 18 | * This program is distributed in the hope that it will be useful, |
| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | * GNU General Public License for more details. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License along |
| 24 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 25 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 26 | * |
| 27 | */ |
| 28 | |
Holger Hans Peter Freyther | 267fd86 | 2015-03-18 21:52:38 +0100 | [diff] [blame] | 29 | #include "config.h" |
| 30 | |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 31 | #include <errno.h> |
Daniel Willmann | 0834a34 | 2011-07-19 12:12:10 +0200 | [diff] [blame] | 32 | #include <inttypes.h> |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 33 | #include <stdio.h> |
| 34 | #include <stdlib.h> |
| 35 | #include <string.h> |
| 36 | #include <time.h> |
| 37 | #include <unistd.h> |
| 38 | |
| 39 | #include <arpa/inet.h> |
| 40 | |
Holger Hans Peter Freyther | 5e21131 | 2014-08-21 16:31:52 +0200 | [diff] [blame] | 41 | #include <netinet/in.h> |
Harald Welte | e15ac06 | 2014-12-04 14:15:36 +0100 | [diff] [blame] | 42 | #ifdef HAVE_NETINET_TCP_H |
| 43 | #include <netinet/tcp.h> |
| 44 | #endif |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 45 | |
Harald Welte | e15ac06 | 2014-12-04 14:15:36 +0100 | [diff] [blame] | 46 | #include <fcntl.h> |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 47 | #include <sys/ioctl.h> |
| 48 | #include <sys/socket.h> |
| 49 | #include <sys/types.h> |
| 50 | |
Harald Welte | 1238cc6 | 2014-08-20 19:50:04 +0200 | [diff] [blame] | 51 | #include <osmocom/ctrl/control_cmd.h> |
| 52 | #include <osmocom/ctrl/control_if.h> |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 53 | |
| 54 | #include <osmocom/core/msgb.h> |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 55 | #include <osmocom/core/rate_ctr.h> |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 56 | #include <osmocom/core/select.h> |
Harald Welte | 216338c | 2017-10-15 19:46:19 +0200 | [diff] [blame] | 57 | #include <osmocom/core/counter.h> |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 58 | #include <osmocom/core/talloc.h> |
Harald Welte | 1238cc6 | 2014-08-20 19:50:04 +0200 | [diff] [blame] | 59 | #include <osmocom/core/socket.h> |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 60 | |
Harald Welte | 1238cc6 | 2014-08-20 19:50:04 +0200 | [diff] [blame] | 61 | #include <osmocom/gsm/protocol/ipaccess.h> |
Harald Welte | acbb4c9 | 2014-08-20 22:51:25 +0200 | [diff] [blame] | 62 | #include <osmocom/gsm/ipa.h> |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 63 | |
| 64 | #include <osmocom/vty/command.h> |
| 65 | #include <osmocom/vty/vector.h> |
| 66 | |
Harald Welte | 79c137c | 2017-04-16 19:08:49 +0200 | [diff] [blame] | 67 | extern int osmo_fsm_ctrl_cmds_install(void); |
| 68 | |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 69 | vector ctrl_node_vec; |
| 70 | |
Harald Welte | d6b1f85 | 2017-04-16 16:57:40 +0200 | [diff] [blame] | 71 | /* global list of control interface lookup helpers */ |
| 72 | struct lookup_helper { |
| 73 | struct llist_head list; |
| 74 | ctrl_cmd_lookup lookup; |
| 75 | }; |
| 76 | static LLIST_HEAD(ctrl_lookup_helpers); |
| 77 | |
Harald Welte | b418682 | 2018-05-26 17:25:11 +0200 | [diff] [blame] | 78 | /*! Parse ascii-encoded decimal number at vline[i] |
| 79 | * \param[in] vline vector containing a tokenized line |
| 80 | * \param[in] i index into the vector \a vline |
| 81 | * \param[out] num parsed decimal integer number at vline[i] |
| 82 | * \returns 1 on success; 0 in case of error */ |
Harald Welte | 528134b | 2014-08-21 15:13:08 +0200 | [diff] [blame] | 83 | int ctrl_parse_get_num(vector vline, int i, long *num) |
| 84 | { |
| 85 | char *token, *tmp; |
| 86 | |
| 87 | if (i >= vector_active(vline)) |
| 88 | return 0; |
| 89 | token = vector_slot(vline, i); |
| 90 | |
| 91 | errno = 0; |
| 92 | if (token[0] == '\0') |
| 93 | return 0; |
| 94 | |
| 95 | *num = strtol(token, &tmp, 10); |
| 96 | if (tmp[0] != '\0' || errno != 0) |
| 97 | return 0; |
| 98 | |
| 99 | return 1; |
| 100 | } |
| 101 | |
Harald Welte | b418682 | 2018-05-26 17:25:11 +0200 | [diff] [blame] | 102 | /*! Send a CTRL command to all connections. |
| 103 | * \param[in] ctrl global control handle |
| 104 | * \param[in] cmd command to send to all connections in \ctrl |
| 105 | * \returns number of times the command has been sent */ |
Daniel Willmann | 35a1b3b | 2011-05-06 16:38:11 +0200 | [diff] [blame] | 106 | int ctrl_cmd_send_to_all(struct ctrl_handle *ctrl, struct ctrl_cmd *cmd) |
| 107 | { |
| 108 | struct ctrl_connection *ccon; |
| 109 | int ret = 0; |
| 110 | |
| 111 | llist_for_each_entry(ccon, &ctrl->ccon_list, list_entry) { |
| 112 | if (ccon == cmd->ccon) |
| 113 | continue; |
| 114 | if (ctrl_cmd_send(&ccon->write_queue, cmd)) |
| 115 | ret++; |
| 116 | } |
| 117 | return ret; |
| 118 | } |
| 119 | |
Harald Welte | b418682 | 2018-05-26 17:25:11 +0200 | [diff] [blame] | 120 | /*! Encode a CTRL command and append it to the given write queue |
| 121 | * \param[inout] queue write queue to which encoded \a cmd shall be appended |
| 122 | * \param[in] cmd decoded command representation |
| 123 | * \returns 0 in case of success; negative on error */ |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 124 | int ctrl_cmd_send(struct osmo_wqueue *queue, struct ctrl_cmd *cmd) |
| 125 | { |
| 126 | int ret; |
| 127 | struct msgb *msg; |
| 128 | |
| 129 | msg = ctrl_cmd_make(cmd); |
| 130 | if (!msg) { |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 131 | LOGP(DLCTRL, LOGL_ERROR, "Could not generate msg\n"); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 132 | return -1; |
| 133 | } |
| 134 | |
Harald Welte | acbb4c9 | 2014-08-20 22:51:25 +0200 | [diff] [blame] | 135 | ipa_prepend_header_ext(msg, IPAC_PROTO_EXT_CTRL); |
| 136 | ipa_prepend_header(msg, IPAC_PROTO_OSMO); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 137 | |
| 138 | ret = osmo_wqueue_enqueue(queue, msg); |
| 139 | if (ret != 0) { |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 140 | LOGP(DLCTRL, LOGL_ERROR, "Failed to enqueue the command.\n"); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 141 | msgb_free(msg); |
| 142 | } |
| 143 | return ret; |
| 144 | } |
| 145 | |
Neels Hofmeyr | 87e4550 | 2017-06-20 00:17:59 +0200 | [diff] [blame] | 146 | /*! Send TRAP over given Control Interface |
Max | bc067eb | 2016-08-04 11:07:08 +0200 | [diff] [blame] | 147 | * \param[in] ctrl Control Interface over which TRAP will be sent |
| 148 | * \param[in] name Name of the TRAP variable |
| 149 | * \param[in] value Value of the TRAP variable |
| 150 | * \return Negative value on error, result of ctrl_cmd_send_to_all() otherwise |
| 151 | */ |
| 152 | int ctrl_cmd_send_trap(struct ctrl_handle *ctrl, const char *name, char *value) |
| 153 | { |
| 154 | int r; |
| 155 | struct ctrl_cmd *cmd = ctrl_cmd_create(NULL, CTRL_TYPE_TRAP); |
| 156 | if (!cmd) |
| 157 | return -ENOMEM; |
| 158 | |
Max | 30b2e34 | 2018-11-26 10:38:55 +0100 | [diff] [blame] | 159 | cmd->id = CTRL_CMD_TRAP_ID; /* It's a TRAP! */ |
Harald Welte | f12d40f | 2017-02-08 15:46:53 +0000 | [diff] [blame] | 160 | cmd->variable = (char *) name; |
Max | bc067eb | 2016-08-04 11:07:08 +0200 | [diff] [blame] | 161 | cmd->reply = value; |
| 162 | r = ctrl_cmd_send_to_all(ctrl, cmd); |
| 163 | talloc_free(cmd); |
| 164 | return r; |
| 165 | } |
| 166 | |
Harald Welte | b418682 | 2018-05-26 17:25:11 +0200 | [diff] [blame] | 167 | /*! Copy given \a cmd and convert copy to CTRL_TYPE_TRAP. |
| 168 | * \param[in] cmd command to be copied |
| 169 | * \returns pointer to newly-allocated copy of type TRAP. Allocated as sibling of \a cmd */ |
Daniel Willmann | f2e75d4 | 2011-07-22 18:08:31 +0200 | [diff] [blame] | 170 | struct ctrl_cmd *ctrl_cmd_trap(struct ctrl_cmd *cmd) |
| 171 | { |
| 172 | struct ctrl_cmd *trap; |
| 173 | |
Harald Welte | c9df37d | 2014-08-20 19:55:17 +0200 | [diff] [blame] | 174 | trap = ctrl_cmd_cpy(cmd, cmd); |
Daniel Willmann | f2e75d4 | 2011-07-22 18:08:31 +0200 | [diff] [blame] | 175 | if (!trap) |
| 176 | return NULL; |
| 177 | |
| 178 | trap->ccon = cmd->ccon; |
| 179 | trap->type = CTRL_TYPE_TRAP; |
| 180 | return trap; |
| 181 | } |
| 182 | |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 183 | static void control_close_conn(struct ctrl_connection *ccon) |
| 184 | { |
Harald Welte | 39c9e7b | 2014-08-22 00:28:51 +0200 | [diff] [blame] | 185 | struct ctrl_cmd_def *cd, *cd2; |
Harald Welte | 29e2798 | 2017-12-22 16:47:18 +0100 | [diff] [blame] | 186 | char *name = osmo_sock_get_name(ccon, ccon->write_queue.bfd.fd); |
| 187 | |
| 188 | LOGP(DLCTRL, LOGL_INFO, "close()d CTRL connection %s\n", name); |
| 189 | talloc_free(name); |
Harald Welte | 39c9e7b | 2014-08-22 00:28:51 +0200 | [diff] [blame] | 190 | |
Harald Welte | 6d96dd7 | 2013-03-16 10:13:04 +0100 | [diff] [blame] | 191 | osmo_wqueue_clear(&ccon->write_queue); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 192 | close(ccon->write_queue.bfd.fd); |
| 193 | osmo_fd_unregister(&ccon->write_queue.bfd); |
Daniel Willmann | 0e0cf37 | 2011-05-06 16:37:25 +0200 | [diff] [blame] | 194 | llist_del(&ccon->list_entry); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 195 | if (ccon->closed_cb) |
| 196 | ccon->closed_cb(ccon); |
Jacob Erlbeck | 141de62 | 2014-03-31 13:42:11 +0200 | [diff] [blame] | 197 | msgb_free(ccon->pending_msg); |
Harald Welte | 39c9e7b | 2014-08-22 00:28:51 +0200 | [diff] [blame] | 198 | |
| 199 | /* clean up deferred commands */ |
| 200 | llist_for_each_entry_safe(cd, cd2, &ccon->def_cmds, list) { |
| 201 | /* delete from list of def_cmds for this ccon */ |
| 202 | llist_del(&cd->list); |
| 203 | /* not strictly needed as this is a slave to the ccon which we |
| 204 | * are about to free anyway */ |
| 205 | talloc_free(cd->cmd); |
| 206 | /* set the CMD to null, this is the indication to the user that |
| 207 | * the connection for this command has gone */ |
| 208 | cd->cmd = NULL; |
| 209 | } |
| 210 | |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 211 | talloc_free(ccon); |
| 212 | } |
| 213 | |
Harald Welte | 528134b | 2014-08-21 15:13:08 +0200 | [diff] [blame] | 214 | int ctrl_cmd_handle(struct ctrl_handle *ctrl, struct ctrl_cmd *cmd, |
| 215 | void *data) |
| 216 | { |
| 217 | char *request; |
| 218 | int i, j, ret, node; |
Max | 33c7ba6 | 2017-05-02 16:24:12 +0200 | [diff] [blame] | 219 | bool break_cycle = false; |
Harald Welte | 528134b | 2014-08-21 15:13:08 +0200 | [diff] [blame] | 220 | vector vline, cmdvec, cmds_vec; |
| 221 | |
Max | 2ed3659 | 2017-02-24 14:48:45 +0100 | [diff] [blame] | 222 | if (cmd->type == CTRL_TYPE_SET_REPLY || |
| 223 | cmd->type == CTRL_TYPE_GET_REPLY) { |
| 224 | if (strncmp(cmd->reply, "OK", 2) == 0) { |
| 225 | LOGP(DLCTRL, LOGL_DEBUG, "%s <%s> for %s is OK\n", |
| 226 | get_value_string(ctrl_type_vals, cmd->type), |
| 227 | cmd->id, cmd->variable); |
| 228 | return CTRL_CMD_HANDLED; |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | if (cmd->type == CTRL_TYPE_ERROR) { |
| 233 | LOGP(DLCTRL, LOGL_ERROR, "%s <%s> for %s is %s\n", |
| 234 | get_value_string(ctrl_type_vals, cmd->type), |
| 235 | cmd->id, cmd->variable, cmd->reply); |
| 236 | return CTRL_CMD_HANDLED; |
| 237 | } |
| 238 | |
Harald Welte | 528134b | 2014-08-21 15:13:08 +0200 | [diff] [blame] | 239 | ret = CTRL_CMD_ERROR; |
| 240 | cmd->reply = NULL; |
| 241 | node = CTRL_NODE_ROOT; |
| 242 | cmd->node = data; |
| 243 | |
| 244 | request = talloc_strdup(cmd, cmd->variable); |
| 245 | if (!request) |
| 246 | goto err; |
| 247 | |
Harald Welte | 3b8921f | 2018-05-26 11:43:43 +0200 | [diff] [blame] | 248 | for (i = 0; i < strlen(request); i++) { |
Harald Welte | 528134b | 2014-08-21 15:13:08 +0200 | [diff] [blame] | 249 | if (request[i] == '.') |
| 250 | request[i] = ' '; |
| 251 | } |
| 252 | |
| 253 | vline = cmd_make_strvec(request); |
| 254 | talloc_free(request); |
| 255 | if (!vline) { |
| 256 | cmd->reply = "cmd_make_strvec failed."; |
| 257 | goto err; |
| 258 | } |
| 259 | |
Harald Welte | 3b8921f | 2018-05-26 11:43:43 +0200 | [diff] [blame] | 260 | for (i = 0; i < vector_active(vline); i++) { |
Harald Welte | d6b1f85 | 2017-04-16 16:57:40 +0200 | [diff] [blame] | 261 | struct lookup_helper *lh; |
Harald Welte | 528134b | 2014-08-21 15:13:08 +0200 | [diff] [blame] | 262 | int rc; |
| 263 | |
| 264 | if (ctrl->lookup) |
| 265 | rc = ctrl->lookup(data, vline, &node, &cmd->node, &i); |
| 266 | else |
| 267 | rc = 0; |
| 268 | |
Harald Welte | d6b1f85 | 2017-04-16 16:57:40 +0200 | [diff] [blame] | 269 | if (!rc) { |
| 270 | llist_for_each_entry(lh, &ctrl_lookup_helpers, list) { |
| 271 | rc = lh->lookup(data, vline, &node, &cmd->node, &i); |
| 272 | if (rc) |
| 273 | break; |
| 274 | } |
| 275 | } |
| 276 | |
Max | 33c7ba6 | 2017-05-02 16:24:12 +0200 | [diff] [blame] | 277 | switch (rc) { |
| 278 | case 1: /* do nothing */ |
| 279 | break; |
| 280 | case -ENODEV: |
| 281 | cmd_free_strvec(vline); |
| 282 | cmd->type = CTRL_TYPE_ERROR; |
| 283 | cmd->reply = "Error while resolving object"; |
| 284 | return ret; |
| 285 | case -ERANGE: |
| 286 | cmd_free_strvec(vline); |
| 287 | cmd->type = CTRL_TYPE_ERROR; |
| 288 | cmd->reply = "Error while parsing the index."; |
| 289 | return ret; |
| 290 | default: /* If we're here the rest must be the command */ |
Harald Welte | 528134b | 2014-08-21 15:13:08 +0200 | [diff] [blame] | 291 | cmdvec = vector_init(vector_active(vline)-i); |
Harald Welte | 3b8921f | 2018-05-26 11:43:43 +0200 | [diff] [blame] | 292 | for (j = i; j < vector_active(vline); j++) { |
Harald Welte | 528134b | 2014-08-21 15:13:08 +0200 | [diff] [blame] | 293 | vector_set(cmdvec, vector_slot(vline, j)); |
| 294 | } |
| 295 | |
| 296 | /* Get the command vector of the right node */ |
| 297 | cmds_vec = vector_lookup(ctrl_node_vec, node); |
| 298 | |
| 299 | if (!cmds_vec) { |
| 300 | cmd->reply = "Command not found."; |
| 301 | vector_free(cmdvec); |
| 302 | break; |
| 303 | } |
| 304 | |
| 305 | ret = ctrl_cmd_exec(cmdvec, cmd, cmds_vec, data); |
Harald Welte | 528134b | 2014-08-21 15:13:08 +0200 | [diff] [blame] | 306 | vector_free(cmdvec); |
Max | 33c7ba6 | 2017-05-02 16:24:12 +0200 | [diff] [blame] | 307 | break_cycle = true; |
Harald Welte | 528134b | 2014-08-21 15:13:08 +0200 | [diff] [blame] | 308 | break; |
| 309 | } |
| 310 | |
Max | 33c7ba6 | 2017-05-02 16:24:12 +0200 | [diff] [blame] | 311 | if (break_cycle) |
| 312 | break; |
| 313 | |
Harald Welte | 528134b | 2014-08-21 15:13:08 +0200 | [diff] [blame] | 314 | if (i+1 == vector_active(vline)) |
| 315 | cmd->reply = "Command not present."; |
| 316 | } |
| 317 | |
| 318 | cmd_free_strvec(vline); |
| 319 | |
| 320 | err: |
| 321 | if (!cmd->reply) { |
| 322 | if (ret == CTRL_CMD_ERROR) { |
Thorsten Alteholz | a81055d | 2017-03-02 22:13:48 +0100 | [diff] [blame] | 323 | cmd->reply = "An error has occurred."; |
Harald Welte | 528134b | 2014-08-21 15:13:08 +0200 | [diff] [blame] | 324 | LOGP(DLCTRL, LOGL_NOTICE, |
| 325 | "%s: cmd->reply has not been set (ERROR).\n", |
| 326 | cmd->variable); |
| 327 | } else if (ret == CTRL_CMD_REPLY) { |
| 328 | LOGP(DLCTRL, LOGL_NOTICE, |
| 329 | "%s: cmd->reply has not been set (type = %d).\n", |
| 330 | cmd->variable, cmd->type); |
| 331 | cmd->reply = ""; |
| 332 | } else { |
| 333 | cmd->reply = "Command has been handled."; |
| 334 | } |
| 335 | } |
| 336 | |
| 337 | if (ret == CTRL_CMD_ERROR) |
| 338 | cmd->type = CTRL_TYPE_ERROR; |
| 339 | return ret; |
Harald Welte | 528134b | 2014-08-21 15:13:08 +0200 | [diff] [blame] | 340 | } |
| 341 | |
| 342 | |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 343 | static int handle_control_read(struct osmo_fd * bfd) |
| 344 | { |
Pau Espin Pedrol | 686eba9 | 2018-05-04 18:20:35 +0200 | [diff] [blame] | 345 | int ret; |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 346 | struct osmo_wqueue *queue; |
| 347 | struct ctrl_connection *ccon; |
Alexander Huemer | 1d3634e | 2011-10-12 00:29:30 +0200 | [diff] [blame] | 348 | struct msgb *msg = NULL; |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 349 | struct ctrl_handle *ctrl = bfd->data; |
| 350 | |
| 351 | queue = container_of(bfd, struct osmo_wqueue, bfd); |
| 352 | ccon = container_of(queue, struct ctrl_connection, write_queue); |
| 353 | |
Jacob Erlbeck | 141de62 | 2014-03-31 13:42:11 +0200 | [diff] [blame] | 354 | ret = ipa_msg_recv_buffered(bfd->fd, &msg, &ccon->pending_msg); |
Pau Espin Pedrol | 686eba9 | 2018-05-04 18:20:35 +0200 | [diff] [blame] | 355 | if (ret == 0) { |
Neels Hofmeyr | d53d216 | 2017-12-16 03:57:56 +0100 | [diff] [blame] | 356 | /* msg was already discarded. */ |
Pau Espin Pedrol | 686eba9 | 2018-05-04 18:20:35 +0200 | [diff] [blame] | 357 | goto close_fd; |
| 358 | } else if (ret == -EAGAIN) { |
| 359 | /* received part of a message, it is stored in ccon->pending_msg and there's |
| 360 | * nothing left to do now. */ |
| 361 | return 0; |
| 362 | } else if (ret < 0) { |
Max | a66de71 | 2018-11-23 16:50:50 +0100 | [diff] [blame] | 363 | LOGP(DLCTRL, LOGL_ERROR, "Failed to parse ip access message: %d (%s)\n", ret, strerror(-ret)); |
Pau Espin Pedrol | 686eba9 | 2018-05-04 18:20:35 +0200 | [diff] [blame] | 364 | return 0; |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 365 | } |
| 366 | |
Neels Hofmeyr | d53d216 | 2017-12-16 03:57:56 +0100 | [diff] [blame] | 367 | ret = ctrl_handle_msg(ctrl, ccon, msg); |
| 368 | msgb_free(msg); |
| 369 | if (ret) |
Pau Espin Pedrol | 686eba9 | 2018-05-04 18:20:35 +0200 | [diff] [blame] | 370 | goto close_fd; |
| 371 | |
| 372 | return 0; |
| 373 | |
| 374 | close_fd: |
| 375 | control_close_conn(ccon); |
| 376 | return -EBADF; |
Neels Hofmeyr | d53d216 | 2017-12-16 03:57:56 +0100 | [diff] [blame] | 377 | } |
| 378 | |
Harald Welte | b418682 | 2018-05-26 17:25:11 +0200 | [diff] [blame] | 379 | /*! Handle a received CTRL command contained in a \ref msgb. |
| 380 | * \param[in] ctrl CTRL interface handle |
| 381 | * \param[in] ccon CTRL connection through which the command was received |
| 382 | * \param[in] msg message buffer containing CTRL command including IPA+IPA_EXT headers |
| 383 | * \returns 0 on success; negative on error */ |
Neels Hofmeyr | d53d216 | 2017-12-16 03:57:56 +0100 | [diff] [blame] | 384 | int ctrl_handle_msg(struct ctrl_handle *ctrl, struct ctrl_connection *ccon, struct msgb *msg) |
| 385 | { |
| 386 | struct ctrl_cmd *cmd; |
Pau Espin Pedrol | 59e6059 | 2018-07-12 19:39:56 +0200 | [diff] [blame] | 387 | bool parse_failed; |
Neels Hofmeyr | d53d216 | 2017-12-16 03:57:56 +0100 | [diff] [blame] | 388 | struct ipaccess_head *iph; |
| 389 | struct ipaccess_head_ext *iph_ext; |
Neels Hofmeyr | 7c0031f | 2018-04-03 17:00:11 +0200 | [diff] [blame] | 390 | int result; |
Neels Hofmeyr | d53d216 | 2017-12-16 03:57:56 +0100 | [diff] [blame] | 391 | |
Stefan Sperling | e484d42 | 2018-10-09 14:09:04 +0200 | [diff] [blame] | 392 | if (msg->len < sizeof(*iph)) { |
| 393 | LOGP(DLCTRL, LOGL_ERROR, "The message is too short.\n"); |
| 394 | return -EINVAL; |
| 395 | } |
| 396 | iph = (struct ipaccess_head *) msg->data; |
| 397 | if (iph->proto == IPAC_PROTO_IPACCESS) { |
| 398 | uint8_t msg_type = *(msg->l2h); |
| 399 | switch (msg_type) { |
| 400 | case IPAC_MSGT_PING: |
| 401 | if (ipa_ccm_send_pong(ccon->write_queue.bfd.fd) < 0) |
| 402 | LOGP(DLINP, LOGL_ERROR, "Cannot send PONG message. Reason: %s\n", strerror(errno)); |
| 403 | break; |
| 404 | case IPAC_MSGT_PONG: |
| 405 | break; |
| 406 | case IPAC_MSGT_ID_ACK: |
| 407 | if (ipa_ccm_send_id_ack(ccon->write_queue.bfd.fd) < 0) |
| 408 | LOGP(DLINP, LOGL_ERROR, "Cannot send ID_ACK message. Reason: %s\n", strerror(errno)); |
| 409 | break; |
| 410 | default: |
| 411 | LOGP(DLCTRL, LOGL_DEBUG, "Received unhandled IPACCESS protocol message of type 0x%x: %s\n", |
| 412 | msg_type, msgb_hexdump(msg)); |
| 413 | break; |
| 414 | } |
| 415 | return 0; |
| 416 | } |
| 417 | if (iph->proto != IPAC_PROTO_OSMO) { |
| 418 | LOGP(DLCTRL, LOGL_ERROR, "Protocol mismatch. Received protocol 0x%x message: %s\n", |
| 419 | iph->proto, msgb_hexdump(msg)); |
| 420 | return -EINVAL; |
| 421 | } |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 422 | if (msg->len < sizeof(*iph) + sizeof(*iph_ext)) { |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 423 | LOGP(DLCTRL, LOGL_ERROR, "The message is too short.\n"); |
Neels Hofmeyr | d53d216 | 2017-12-16 03:57:56 +0100 | [diff] [blame] | 424 | return -EINVAL; |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 425 | } |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 426 | iph_ext = (struct ipaccess_head_ext *) iph->data; |
| 427 | if (iph_ext->proto != IPAC_PROTO_EXT_CTRL) { |
Stefan Sperling | e484d42 | 2018-10-09 14:09:04 +0200 | [diff] [blame] | 428 | LOGP(DLCTRL, LOGL_ERROR, "Extended protocol mismatch. Received protocol 0x%x message: %s\n", |
| 429 | iph_ext->proto, msgb_hexdump(msg)); |
Neels Hofmeyr | d53d216 | 2017-12-16 03:57:56 +0100 | [diff] [blame] | 430 | return -EINVAL; |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 431 | } |
| 432 | |
| 433 | msg->l2h = iph_ext->data; |
| 434 | |
Pau Espin Pedrol | 59e6059 | 2018-07-12 19:39:56 +0200 | [diff] [blame] | 435 | cmd = ctrl_cmd_parse3(ccon, msg, &parse_failed); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 436 | |
Neels Hofmeyr | c0b0b62 | 2017-12-16 01:12:35 +0100 | [diff] [blame] | 437 | if (!cmd) { |
| 438 | /* should never happen */ |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 439 | cmd = talloc_zero(ccon, struct ctrl_cmd); |
| 440 | if (!cmd) |
Neels Hofmeyr | d53d216 | 2017-12-16 03:57:56 +0100 | [diff] [blame] | 441 | return -ENOMEM; |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 442 | LOGP(DLCTRL, LOGL_ERROR, "Command parser error.\n"); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 443 | cmd->type = CTRL_TYPE_ERROR; |
| 444 | cmd->id = "err"; |
| 445 | cmd->reply = "Command parser error."; |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 446 | } |
| 447 | |
Neels Hofmeyr | 7c0031f | 2018-04-03 17:00:11 +0200 | [diff] [blame] | 448 | /* In case of error, reply with the error message right away. */ |
Pau Espin Pedrol | 59e6059 | 2018-07-12 19:39:56 +0200 | [diff] [blame] | 449 | if (cmd->type == CTRL_TYPE_ERROR && parse_failed) |
Neels Hofmeyr | 7c0031f | 2018-04-03 17:00:11 +0200 | [diff] [blame] | 450 | goto send_reply; |
Neels Hofmeyr | cdbc9af | 2018-04-03 16:51:49 +0200 | [diff] [blame] | 451 | |
Neels Hofmeyr | 7c0031f | 2018-04-03 17:00:11 +0200 | [diff] [blame] | 452 | cmd->ccon = ccon; |
| 453 | result = ctrl_cmd_handle(ctrl, cmd, ctrl->data); |
Neels Hofmeyr | cdbc9af | 2018-04-03 16:51:49 +0200 | [diff] [blame] | 454 | |
Neels Hofmeyr | 7c0031f | 2018-04-03 17:00:11 +0200 | [diff] [blame] | 455 | |
| 456 | if (cmd->defer) { |
| 457 | /* The command is still stored as ctrl_cmd_def.cmd, in the def_cmds list. |
| 458 | * Just leave hanging for deferred handling. Reply will happen later. */ |
| 459 | return 0; |
Neels Hofmeyr | c0b0b62 | 2017-12-16 01:12:35 +0100 | [diff] [blame] | 460 | } |
| 461 | |
Neels Hofmeyr | 7c0031f | 2018-04-03 17:00:11 +0200 | [diff] [blame] | 462 | /* On CTRL_CMD_HANDLED, no reply needs to be sent back. */ |
| 463 | if (result == CTRL_CMD_HANDLED) |
| 464 | goto just_free; |
Neels Hofmeyr | c0b0b62 | 2017-12-16 01:12:35 +0100 | [diff] [blame] | 465 | |
Neels Hofmeyr | 7c0031f | 2018-04-03 17:00:11 +0200 | [diff] [blame] | 466 | send_reply: |
| 467 | /* There is a reply or error that should be reported back to the sender. */ |
| 468 | ctrl_cmd_send(&ccon->write_queue, cmd); |
| 469 | just_free: |
| 470 | talloc_free(cmd); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 471 | return 0; |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 472 | } |
| 473 | |
| 474 | static int control_write_cb(struct osmo_fd *bfd, struct msgb *msg) |
| 475 | { |
Harald Welte | f360b42 | 2017-12-22 16:43:24 +0100 | [diff] [blame] | 476 | struct osmo_wqueue *queue; |
| 477 | struct ctrl_connection *ccon; |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 478 | int rc; |
| 479 | |
Harald Welte | f360b42 | 2017-12-22 16:43:24 +0100 | [diff] [blame] | 480 | queue = container_of(bfd, struct osmo_wqueue, bfd); |
| 481 | ccon = container_of(queue, struct ctrl_connection, write_queue); |
| 482 | |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 483 | rc = write(bfd->fd, msg->data, msg->len); |
Pau Espin Pedrol | 686eba9 | 2018-05-04 18:20:35 +0200 | [diff] [blame] | 484 | if (rc == 0) { |
Harald Welte | f360b42 | 2017-12-22 16:43:24 +0100 | [diff] [blame] | 485 | control_close_conn(ccon); |
Pau Espin Pedrol | 686eba9 | 2018-05-04 18:20:35 +0200 | [diff] [blame] | 486 | return -EBADF; |
| 487 | } |
| 488 | if (rc != msg->len) |
Harald Welte | 5995281 | 2017-12-22 18:03:44 +0100 | [diff] [blame] | 489 | LOGP(DLCTRL, LOGL_ERROR, "Failed to write message to the CTRL connection.\n"); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 490 | |
Pau Espin Pedrol | 686eba9 | 2018-05-04 18:20:35 +0200 | [diff] [blame] | 491 | return 0; |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 492 | } |
| 493 | |
Neels Hofmeyr | 87e4550 | 2017-06-20 00:17:59 +0200 | [diff] [blame] | 494 | /*! Allocate CTRL connection |
Max | fa9e05e | 2017-02-20 11:53:11 +0100 | [diff] [blame] | 495 | * \param[in] ctx Context from which talloc should allocate it |
| 496 | * \param[in] data caller's private data parameter which should assigned to |
| 497 | write queue's file descriptor data parameter. |
| 498 | * \return Allocated CTRL connection structure or NULL in case of errors |
| 499 | */ |
| 500 | struct ctrl_connection *osmo_ctrl_conn_alloc(void *ctx, void *data) |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 501 | { |
| 502 | struct ctrl_connection *ccon = talloc_zero(ctx, struct ctrl_connection); |
| 503 | if (!ccon) |
| 504 | return NULL; |
| 505 | |
| 506 | osmo_wqueue_init(&ccon->write_queue, 100); |
| 507 | /* Error handling here? */ |
| 508 | |
| 509 | INIT_LLIST_HEAD(&ccon->cmds); |
Harald Welte | 39c9e7b | 2014-08-22 00:28:51 +0200 | [diff] [blame] | 510 | INIT_LLIST_HEAD(&ccon->def_cmds); |
| 511 | |
Max | fa9e05e | 2017-02-20 11:53:11 +0100 | [diff] [blame] | 512 | ccon->write_queue.bfd.data = data; |
| 513 | ccon->write_queue.write_cb = control_write_cb; |
Max | 9756c46 | 2017-02-24 13:03:32 +0100 | [diff] [blame] | 514 | ccon->write_queue.read_cb = handle_control_read; |
Max | fa9e05e | 2017-02-20 11:53:11 +0100 | [diff] [blame] | 515 | |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 516 | return ccon; |
| 517 | } |
| 518 | |
| 519 | static int listen_fd_cb(struct osmo_fd *listen_bfd, unsigned int what) |
| 520 | { |
| 521 | int ret, fd, on; |
Daniel Willmann | 0e0cf37 | 2011-05-06 16:37:25 +0200 | [diff] [blame] | 522 | struct ctrl_handle *ctrl; |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 523 | struct ctrl_connection *ccon; |
Harald Welte | 5995281 | 2017-12-22 18:03:44 +0100 | [diff] [blame] | 524 | char *name; |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 525 | |
| 526 | |
Harald Welte | 1688699 | 2019-03-20 10:26:39 +0100 | [diff] [blame] | 527 | if (!(what & OSMO_FD_READ)) |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 528 | return 0; |
| 529 | |
Harald Welte | 5995281 | 2017-12-22 18:03:44 +0100 | [diff] [blame] | 530 | fd = accept(listen_bfd->fd, NULL, NULL); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 531 | if (fd < 0) { |
| 532 | perror("accept"); |
| 533 | return fd; |
| 534 | } |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 535 | |
Harald Welte | e15ac06 | 2014-12-04 14:15:36 +0100 | [diff] [blame] | 536 | #ifdef TCP_NODELAY |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 537 | on = 1; |
| 538 | ret = setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on)); |
| 539 | if (ret != 0) { |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 540 | LOGP(DLCTRL, LOGL_ERROR, "Failed to set TCP_NODELAY: %s\n", strerror(errno)); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 541 | close(fd); |
| 542 | return ret; |
| 543 | } |
Harald Welte | e15ac06 | 2014-12-04 14:15:36 +0100 | [diff] [blame] | 544 | #endif |
Max | fa9e05e | 2017-02-20 11:53:11 +0100 | [diff] [blame] | 545 | ctrl = listen_bfd->data; |
| 546 | ccon = osmo_ctrl_conn_alloc(listen_bfd->data, ctrl); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 547 | if (!ccon) { |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 548 | LOGP(DLCTRL, LOGL_ERROR, "Failed to allocate.\n"); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 549 | close(fd); |
| 550 | return -1; |
| 551 | } |
| 552 | |
Harald Welte | 5995281 | 2017-12-22 18:03:44 +0100 | [diff] [blame] | 553 | name = osmo_sock_get_name(ccon, fd); |
| 554 | LOGP(DLCTRL, LOGL_INFO, "accept()ed new CTRL connection from %s\n", name); |
| 555 | |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 556 | ccon->write_queue.bfd.fd = fd; |
Harald Welte | 1688699 | 2019-03-20 10:26:39 +0100 | [diff] [blame] | 557 | ccon->write_queue.bfd.when = OSMO_FD_READ; |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 558 | |
| 559 | ret = osmo_fd_register(&ccon->write_queue.bfd); |
| 560 | if (ret < 0) { |
Harald Welte | 7fd0c83 | 2014-08-20 19:58:13 +0200 | [diff] [blame] | 561 | LOGP(DLCTRL, LOGL_ERROR, "Could not register FD.\n"); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 562 | close(ccon->write_queue.bfd.fd); |
| 563 | talloc_free(ccon); |
| 564 | } |
| 565 | |
Daniel Willmann | 0e0cf37 | 2011-05-06 16:37:25 +0200 | [diff] [blame] | 566 | llist_add(&ccon->list_entry, &ctrl->ccon_list); |
| 567 | |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 568 | return ret; |
| 569 | } |
| 570 | |
Max | b214af5 | 2017-11-24 13:51:57 +0100 | [diff] [blame] | 571 | static uint64_t get_rate_ctr_value(const struct rate_ctr *ctr, int intv, const char *grp) |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 572 | { |
Max | b214af5 | 2017-11-24 13:51:57 +0100 | [diff] [blame] | 573 | if (intv >= RATE_CTR_INTV_NUM) { |
| 574 | LOGP(DLCTRL, LOGL_ERROR, "Unexpected interval value %d while trying to get rate counter value in %s\n", |
| 575 | intv, grp); |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 576 | return 0; |
Max | b214af5 | 2017-11-24 13:51:57 +0100 | [diff] [blame] | 577 | } |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 578 | |
| 579 | /* Absolute value */ |
| 580 | if (intv == -1) { |
| 581 | return ctr->current; |
| 582 | } else { |
| 583 | return ctr->intv[intv].rate; |
| 584 | } |
| 585 | } |
| 586 | |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 587 | static int get_rate_ctr_group_idx(const struct rate_ctr_group *ctrg, int intv, struct ctrl_cmd *cmd) |
| 588 | { |
Max | 7dc8e88 | 2017-11-24 13:53:33 +0100 | [diff] [blame] | 589 | unsigned int i; |
| 590 | for (i = 0; i < ctrg->desc->num_ctr; i++) { |
| 591 | ctrl_cmd_reply_printf(cmd, "%s %"PRIu64";", ctrg->desc->ctr_desc[i].name, |
| 592 | get_rate_ctr_value(&ctrg->ctr[i], intv, ctrg->desc->group_name_prefix)); |
| 593 | if (!cmd->reply) { |
| 594 | cmd->reply = "OOM"; |
| 595 | return CTRL_CMD_ERROR; |
| 596 | } |
| 597 | } |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 598 | |
| 599 | return CTRL_CMD_REPLY; |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 600 | } |
| 601 | |
Max | 52a38dd | 2017-11-23 20:34:02 +0100 | [diff] [blame] | 602 | static int ctrl_rate_ctr_group_handler(struct rate_ctr_group *ctrg, void *data) |
| 603 | { |
| 604 | struct ctrl_cmd *cmd = data; |
| 605 | |
| 606 | cmd->reply = talloc_asprintf_append(cmd->reply, "%s.%u;", ctrg->desc->group_name_prefix, ctrg->idx); |
| 607 | if (!cmd->reply) { |
| 608 | cmd->reply = "OOM"; |
| 609 | return -1; |
| 610 | } |
| 611 | |
| 612 | return 0; |
| 613 | } |
| 614 | |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 615 | /* rate_ctr */ |
| 616 | CTRL_CMD_DEFINE(rate_ctr, "rate_ctr *"); |
Daniel Willmann | f7c74e5 | 2011-08-05 11:48:18 +0200 | [diff] [blame] | 617 | static int get_rate_ctr(struct ctrl_cmd *cmd, void *data) |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 618 | { |
| 619 | int intv; |
| 620 | unsigned int idx; |
Neels Hofmeyr | 5b34f77 | 2016-09-19 14:15:03 +0200 | [diff] [blame] | 621 | char *ctr_group, *ctr_idx, *tmp, *dup, *saveptr, *interval; |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 622 | struct rate_ctr_group *ctrg; |
| 623 | const struct rate_ctr *ctr; |
| 624 | |
| 625 | dup = talloc_strdup(cmd, cmd->variable); |
| 626 | if (!dup) |
| 627 | goto oom; |
| 628 | |
| 629 | /* Skip over possible prefixes (net.) */ |
| 630 | tmp = strstr(dup, "rate_ctr"); |
| 631 | if (!tmp) { |
| 632 | talloc_free(dup); |
| 633 | cmd->reply = "rate_ctr not a token in rate_ctr command!"; |
| 634 | goto err; |
| 635 | } |
| 636 | |
| 637 | strtok_r(tmp, ".", &saveptr); |
| 638 | interval = strtok_r(NULL, ".", &saveptr); |
| 639 | if (!interval) { |
| 640 | talloc_free(dup); |
| 641 | cmd->reply = "Missing interval."; |
| 642 | goto err; |
| 643 | } |
| 644 | |
| 645 | if (!strcmp(interval, "abs")) { |
| 646 | intv = -1; |
| 647 | } else if (!strcmp(interval, "per_sec")) { |
| 648 | intv = RATE_CTR_INTV_SEC; |
| 649 | } else if (!strcmp(interval, "per_min")) { |
| 650 | intv = RATE_CTR_INTV_MIN; |
| 651 | } else if (!strcmp(interval, "per_hour")) { |
| 652 | intv = RATE_CTR_INTV_HOUR; |
| 653 | } else if (!strcmp(interval, "per_day")) { |
| 654 | intv = RATE_CTR_INTV_DAY; |
Max | 52a38dd | 2017-11-23 20:34:02 +0100 | [diff] [blame] | 655 | } else if (!strcmp(interval, "*")) { |
| 656 | intv = rate_ctr_for_each_group(ctrl_rate_ctr_group_handler, cmd); |
| 657 | if (intv < 0) |
| 658 | return CTRL_CMD_ERROR; |
| 659 | return CTRL_CMD_REPLY; |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 660 | } else { |
| 661 | talloc_free(dup); |
Max | b4718fd | 2017-11-24 11:28:35 +0100 | [diff] [blame] | 662 | cmd->reply = "Wrong interval. Expecting 'per_sec', 'per_min', 'per_hour', 'per_day' or 'abs' value."; |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 663 | goto err; |
| 664 | } |
| 665 | |
| 666 | ctr_group = strtok_r(NULL, ".", &saveptr); |
Max | 22886d9 | 2016-06-14 18:17:06 +0200 | [diff] [blame] | 667 | ctr_idx = strtok_r(NULL, ".", &saveptr); |
| 668 | if (!ctr_group || !ctr_idx) { |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 669 | talloc_free(dup); |
Max | 22886d9 | 2016-06-14 18:17:06 +0200 | [diff] [blame] | 670 | cmd->reply = "Counter group must be of name.index form e. g. " |
| 671 | "e1inp.0"; |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 672 | goto err; |
| 673 | } |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 674 | |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 675 | idx = atoi(ctr_idx); |
| 676 | |
| 677 | ctrg = rate_ctr_get_group_by_name_idx(ctr_group, idx); |
| 678 | if (!ctrg) { |
| 679 | talloc_free(dup); |
Max | 22886d9 | 2016-06-14 18:17:06 +0200 | [diff] [blame] | 680 | cmd->reply = "Counter group with given name and index not found"; |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 681 | goto err; |
| 682 | } |
| 683 | |
Max | 22886d9 | 2016-06-14 18:17:06 +0200 | [diff] [blame] | 684 | if (!strlen(saveptr)) { |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 685 | talloc_free(dup); |
| 686 | return get_rate_ctr_group_idx(ctrg, intv, cmd); |
| 687 | } |
| 688 | |
Max | 22886d9 | 2016-06-14 18:17:06 +0200 | [diff] [blame] | 689 | ctr = rate_ctr_get_by_name(ctrg, saveptr); |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 690 | if (!ctr) { |
| 691 | cmd->reply = "Counter name not found."; |
| 692 | talloc_free(dup); |
| 693 | goto err; |
| 694 | } |
| 695 | |
| 696 | talloc_free(dup); |
| 697 | |
Max | b214af5 | 2017-11-24 13:51:57 +0100 | [diff] [blame] | 698 | cmd->reply = talloc_asprintf(cmd, "%"PRIu64, get_rate_ctr_value(ctr, intv, ctrg->desc->group_name_prefix)); |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 699 | if (!cmd->reply) |
| 700 | goto oom; |
| 701 | |
| 702 | return CTRL_CMD_REPLY; |
| 703 | oom: |
| 704 | cmd->reply = "OOM"; |
| 705 | err: |
| 706 | return CTRL_CMD_ERROR; |
| 707 | } |
| 708 | |
Daniel Willmann | f7c74e5 | 2011-08-05 11:48:18 +0200 | [diff] [blame] | 709 | static int set_rate_ctr(struct ctrl_cmd *cmd, void *data) |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 710 | { |
| 711 | cmd->reply = "Can't set rate counter."; |
| 712 | |
| 713 | return CTRL_CMD_ERROR; |
| 714 | } |
| 715 | |
Daniel Willmann | f7c74e5 | 2011-08-05 11:48:18 +0200 | [diff] [blame] | 716 | static int verify_rate_ctr(struct ctrl_cmd *cmd, const char *value, void *data) |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 717 | { |
| 718 | return 0; |
| 719 | } |
| 720 | |
| 721 | /* counter */ |
| 722 | CTRL_CMD_DEFINE(counter, "counter *"); |
Daniel Willmann | f7c74e5 | 2011-08-05 11:48:18 +0200 | [diff] [blame] | 723 | static int get_counter(struct ctrl_cmd *cmd, void *data) |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 724 | { |
| 725 | char *ctr_name, *tmp, *dup, *saveptr; |
| 726 | struct osmo_counter *counter; |
| 727 | |
| 728 | cmd->reply = "OOM"; |
| 729 | dup = talloc_strdup(cmd, cmd->variable); |
| 730 | if (!dup) |
| 731 | goto err; |
| 732 | |
| 733 | |
| 734 | tmp = strstr(dup, "counter"); |
| 735 | if (!tmp) { |
| 736 | talloc_free(dup); |
| 737 | goto err; |
| 738 | } |
| 739 | |
| 740 | strtok_r(tmp, ".", &saveptr); |
| 741 | ctr_name = strtok_r(NULL, "\0", &saveptr); |
| 742 | |
| 743 | if (!ctr_name) |
| 744 | goto err; |
| 745 | |
| 746 | counter = osmo_counter_get_by_name(ctr_name); |
| 747 | if (!counter) { |
| 748 | cmd->reply = "Counter name not found."; |
| 749 | talloc_free(dup); |
| 750 | goto err; |
| 751 | } |
| 752 | |
| 753 | talloc_free(dup); |
| 754 | |
| 755 | cmd->reply = talloc_asprintf(cmd, "%lu", counter->value); |
| 756 | if (!cmd->reply) { |
| 757 | cmd->reply = "OOM"; |
| 758 | goto err; |
| 759 | } |
| 760 | |
| 761 | return CTRL_CMD_REPLY; |
| 762 | err: |
| 763 | return CTRL_CMD_ERROR; |
| 764 | } |
| 765 | |
Daniel Willmann | f7c74e5 | 2011-08-05 11:48:18 +0200 | [diff] [blame] | 766 | static int set_counter(struct ctrl_cmd *cmd, void *data) |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 767 | { |
| 768 | |
| 769 | cmd->reply = "Can't set counter."; |
| 770 | |
| 771 | return CTRL_CMD_ERROR; |
| 772 | } |
| 773 | |
Daniel Willmann | f7c74e5 | 2011-08-05 11:48:18 +0200 | [diff] [blame] | 774 | static int verify_counter(struct ctrl_cmd *cmd, const char *value, void *data) |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 775 | { |
| 776 | return 0; |
| 777 | } |
| 778 | |
Harald Welte | ae2fcb2 | 2014-08-21 15:20:00 +0200 | [diff] [blame] | 779 | struct ctrl_handle *ctrl_interface_setup(void *data, uint16_t port, |
| 780 | ctrl_cmd_lookup lookup) |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 781 | { |
Neels Hofmeyr | 4934309 | 2016-02-24 00:09:40 +0100 | [diff] [blame] | 782 | return ctrl_interface_setup_dynip(data, "127.0.0.1", port, lookup); |
| 783 | } |
| 784 | |
Harald Welte | 79c137c | 2017-04-16 19:08:49 +0200 | [diff] [blame] | 785 | static int ctrl_initialized = 0; |
| 786 | |
| 787 | /* global ctrl initialization */ |
Neels Hofmeyr | ea66852 | 2017-10-16 16:18:01 +0200 | [diff] [blame] | 788 | static int ctrl_init(unsigned int node_count) |
Harald Welte | 79c137c | 2017-04-16 19:08:49 +0200 | [diff] [blame] | 789 | { |
| 790 | int ret; |
| 791 | |
Neels Hofmeyr | ea66852 | 2017-10-16 16:18:01 +0200 | [diff] [blame] | 792 | if (!node_count) |
| 793 | node_count = _LAST_CTRL_NODE; |
| 794 | OSMO_ASSERT(node_count >= _LAST_CTRL_NODE); |
Harald Welte | 79c137c | 2017-04-16 19:08:49 +0200 | [diff] [blame] | 795 | |
Neels Hofmeyr | ea66852 | 2017-10-16 16:18:01 +0200 | [diff] [blame] | 796 | if (ctrl_initialized) { |
| 797 | OSMO_ASSERT(ctrl_initialized == node_count); |
| 798 | return 0; |
| 799 | } |
| 800 | |
| 801 | ctrl_node_vec = vector_init(node_count); |
Harald Welte | 79c137c | 2017-04-16 19:08:49 +0200 | [diff] [blame] | 802 | if (!ctrl_node_vec) |
| 803 | goto err; |
| 804 | |
| 805 | ret = ctrl_cmd_install(CTRL_NODE_ROOT, &cmd_rate_ctr); |
| 806 | if (ret) |
| 807 | goto err_vec; |
| 808 | ret = ctrl_cmd_install(CTRL_NODE_ROOT, &cmd_counter); |
| 809 | if (ret) |
| 810 | goto err_vec; |
| 811 | |
Harald Welte | 31c0fef | 2017-04-16 17:26:30 +0200 | [diff] [blame] | 812 | ret = osmo_fsm_ctrl_cmds_install(); |
| 813 | if (ret) |
| 814 | goto err_vec; |
| 815 | |
Neels Hofmeyr | ea66852 | 2017-10-16 16:18:01 +0200 | [diff] [blame] | 816 | ctrl_initialized = node_count; |
Harald Welte | 79c137c | 2017-04-16 19:08:49 +0200 | [diff] [blame] | 817 | return 0; |
| 818 | |
| 819 | err_vec: |
| 820 | vector_free(ctrl_node_vec); |
| 821 | ctrl_node_vec = NULL; |
| 822 | err: |
| 823 | return -1; |
| 824 | } |
| 825 | |
Neels Hofmeyr | ea66852 | 2017-10-16 16:18:01 +0200 | [diff] [blame] | 826 | /*! Allocate a CTRL interface handle. |
| 827 | * \param[in] ctx Talloc allocation context to be used |
Harald Welte | 79c137c | 2017-04-16 19:08:49 +0200 | [diff] [blame] | 828 | * \param[in] data Pointer which will be made available to each |
| 829 | set_..() get_..() verify_..() control command function |
| 830 | * \param[in] lookup Lookup function pointer, can be NULL |
Neels Hofmeyr | ea66852 | 2017-10-16 16:18:01 +0200 | [diff] [blame] | 831 | * \param[in] node_count Number of CTRL nodes to allocate, 0 for default. |
Harald Welte | 79c137c | 2017-04-16 19:08:49 +0200 | [diff] [blame] | 832 | * \returns ctrl_handle pointer or NULL in case of errors |
Neels Hofmeyr | ea66852 | 2017-10-16 16:18:01 +0200 | [diff] [blame] | 833 | * |
| 834 | * Please see ctrl_interface_setup_dynip2() for a detailed description of \a |
| 835 | * node_count semantics. |
Harald Welte | 79c137c | 2017-04-16 19:08:49 +0200 | [diff] [blame] | 836 | */ |
Neels Hofmeyr | ea66852 | 2017-10-16 16:18:01 +0200 | [diff] [blame] | 837 | struct ctrl_handle *ctrl_handle_alloc2(void *ctx, void *data, |
| 838 | ctrl_cmd_lookup lookup, |
| 839 | unsigned int node_count) |
Harald Welte | 79c137c | 2017-04-16 19:08:49 +0200 | [diff] [blame] | 840 | { |
| 841 | struct ctrl_handle *ctrl; |
| 842 | |
Neels Hofmeyr | ea66852 | 2017-10-16 16:18:01 +0200 | [diff] [blame] | 843 | ctrl_init(node_count); |
Harald Welte | 79c137c | 2017-04-16 19:08:49 +0200 | [diff] [blame] | 844 | |
| 845 | ctrl = talloc_zero(ctx, struct ctrl_handle); |
| 846 | if (!ctrl) |
| 847 | return NULL; |
| 848 | |
| 849 | INIT_LLIST_HEAD(&ctrl->ccon_list); |
| 850 | |
| 851 | ctrl->data = data; |
| 852 | ctrl->lookup = lookup; |
| 853 | |
| 854 | return ctrl; |
| 855 | } |
| 856 | |
Neels Hofmeyr | ea66852 | 2017-10-16 16:18:01 +0200 | [diff] [blame] | 857 | /*! Allocate a CTRL interface handle. |
| 858 | * \param[in] ctx Talloc allocation context to be used |
| 859 | * \param[in] data Pointer which will be made available to each |
| 860 | set_..() get_..() verify_..() control command function |
| 861 | * \param[in] lookup Lookup function pointer, can be NULL |
| 862 | * \returns ctrl_handle pointer or NULL in case of errors |
| 863 | */ |
| 864 | struct ctrl_handle *ctrl_handle_alloc(void *ctx, void *data, ctrl_cmd_lookup lookup) |
| 865 | { |
| 866 | return ctrl_handle_alloc2(ctx, data, lookup, 0); |
| 867 | } |
| 868 | |
| 869 | /*! Setup CTRL interface on a given address. |
Max | 32ee5af | 2017-02-16 17:44:09 +0100 | [diff] [blame] | 870 | * \param[in] data Pointer which will be made available to each |
| 871 | set_..() get_..() verify_..() control command function |
| 872 | * \param[in] bind_addr Address on which CTRL socket shall listen |
| 873 | * \param[in] port Port on which CTRL socket shall listen |
| 874 | * \param[in] lookup Lookup function pointer, can be NULL |
Neels Hofmeyr | ea66852 | 2017-10-16 16:18:01 +0200 | [diff] [blame] | 875 | * \param[in] node_count Number of CTRL nodes to allocate, 0 for default. |
Max | 32ee5af | 2017-02-16 17:44:09 +0100 | [diff] [blame] | 876 | * \returns ctrl_handle pointer or NULL in case of errors |
Neels Hofmeyr | ea66852 | 2017-10-16 16:18:01 +0200 | [diff] [blame] | 877 | * |
| 878 | * Control interface nodes are identified by a node handle; some of these are |
| 879 | * defined in enum ctrl_node_type, here in libosmocore. However, applications |
| 880 | * defining own nodes may add own control nodes without having to extend the |
| 881 | * enum in libosmocore. For example, in the calling application, define an enum |
| 882 | * like "enum more_ctrl_nodes { CTRL_NODE_FOO = _LAST_CTRL_NODE, CTRL_NODE_BAR, |
| 883 | * _LAST_CTRL_NODE_EXTENDED }". In order to provide space for the additional |
| 884 | * control nodes, pass _LAST_CTRL_NODE_EXTENDED to the \a node_count parameter. |
| 885 | * Passing 0 is identical to passing _LAST_CTRL_NODE, i.e. to not define own |
| 886 | * control nodes apart from libosmocore ones. |
Max | 32ee5af | 2017-02-16 17:44:09 +0100 | [diff] [blame] | 887 | */ |
Neels Hofmeyr | ea66852 | 2017-10-16 16:18:01 +0200 | [diff] [blame] | 888 | struct ctrl_handle *ctrl_interface_setup_dynip2(void *data, |
| 889 | const char *bind_addr, |
| 890 | uint16_t port, |
| 891 | ctrl_cmd_lookup lookup, |
| 892 | unsigned int node_count) |
Neels Hofmeyr | 4934309 | 2016-02-24 00:09:40 +0100 | [diff] [blame] | 893 | { |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 894 | int ret; |
| 895 | struct ctrl_handle *ctrl; |
| 896 | |
Neels Hofmeyr | ea66852 | 2017-10-16 16:18:01 +0200 | [diff] [blame] | 897 | ctrl = ctrl_handle_alloc2(data, data, lookup, node_count); |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 898 | if (!ctrl) |
Daniel Willmann | 782974b | 2011-07-22 17:55:42 +0200 | [diff] [blame] | 899 | return NULL; |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 900 | |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 901 | /* Listen for control connections */ |
Harald Welte | 1238cc6 | 2014-08-20 19:50:04 +0200 | [diff] [blame] | 902 | ctrl->listen_fd.cb = listen_fd_cb; |
| 903 | ctrl->listen_fd.data = ctrl; |
| 904 | ret = osmo_sock_init_ofd(&ctrl->listen_fd, AF_INET, SOCK_STREAM, IPPROTO_TCP, |
Neels Hofmeyr | 4934309 | 2016-02-24 00:09:40 +0100 | [diff] [blame] | 905 | bind_addr, port, OSMO_SOCK_F_BIND); |
Harald Welte | 79c137c | 2017-04-16 19:08:49 +0200 | [diff] [blame] | 906 | if (ret < 0) { |
| 907 | talloc_free(ctrl); |
| 908 | return NULL; |
| 909 | } |
Daniel Willmann | e9f5894 | 2011-04-21 11:43:55 +0200 | [diff] [blame] | 910 | |
Neels Hofmeyr | 38d232e | 2016-09-19 14:17:30 +0200 | [diff] [blame] | 911 | LOGP(DLCTRL, LOGL_NOTICE, "CTRL at %s %u\n", bind_addr, port); |
Daniel Willmann | 782974b | 2011-07-22 17:55:42 +0200 | [diff] [blame] | 912 | return ctrl; |
Daniel Willmann | 1264cb4 | 2010-10-21 15:00:36 +0200 | [diff] [blame] | 913 | } |
Harald Welte | d6b1f85 | 2017-04-16 16:57:40 +0200 | [diff] [blame] | 914 | |
Neels Hofmeyr | ea66852 | 2017-10-16 16:18:01 +0200 | [diff] [blame] | 915 | /*! Setup CTRL interface on a given address. |
| 916 | * \param[in] data Pointer which will be made available to each |
| 917 | set_..() get_..() verify_..() control command function |
| 918 | * \param[in] bind_addr Address on which CTRL socket shall listen |
| 919 | * \param[in] port Port on which CTRL socket shall listen |
| 920 | * \param[in] lookup Lookup function pointer, can be NULL |
| 921 | * \returns ctrl_handle pointer or NULL in case of errors |
| 922 | */ |
| 923 | struct ctrl_handle *ctrl_interface_setup_dynip(void *data, |
| 924 | const char *bind_addr, |
| 925 | uint16_t port, |
| 926 | ctrl_cmd_lookup lookup) |
| 927 | { |
| 928 | return ctrl_interface_setup_dynip2(data, bind_addr, port, lookup, 0); |
| 929 | } |
| 930 | |
| 931 | |
Neels Hofmeyr | 87e4550 | 2017-06-20 00:17:59 +0200 | [diff] [blame] | 932 | /*! Install a lookup helper function for control nodes |
Harald Welte | d6b1f85 | 2017-04-16 16:57:40 +0200 | [diff] [blame] | 933 | * This function is used by e.g. library code to install lookup helpers |
| 934 | * for additional nodes in the control interface. |
| 935 | * \param[in] lookup The lookup helper function |
| 936 | * \retuns - on success; negative on error. |
| 937 | */ |
| 938 | int ctrl_lookup_register(ctrl_cmd_lookup lookup) |
| 939 | { |
| 940 | struct lookup_helper *lh; |
| 941 | |
| 942 | /* avoid double registration */ |
| 943 | llist_for_each_entry(lh, &ctrl_lookup_helpers, list) { |
| 944 | if (lh->lookup == lookup) |
| 945 | return -EEXIST; |
| 946 | } |
| 947 | |
| 948 | lh = talloc_zero(NULL, struct lookup_helper); |
| 949 | if (!lh) |
| 950 | return -ENOMEM; |
| 951 | |
| 952 | lh->lookup = lookup; |
| 953 | llist_add_tail(&lh->list, &ctrl_lookup_helpers); |
| 954 | return 0; |
| 955 | } |
Harald Welte | f85861d | 2017-04-16 19:17:10 +0200 | [diff] [blame] | 956 | |
Neels Hofmeyr | 87e4550 | 2017-06-20 00:17:59 +0200 | [diff] [blame] | 957 | /*! Helper for "local execution" of a CTRL command from a string |
Harald Welte | f85861d | 2017-04-16 19:17:10 +0200 | [diff] [blame] | 958 | * The function will parse + execute the given control command string |
| 959 | * and return a corresponding ctrl_cmd. Caller is responsible to |
| 960 | * talloc_free() the return value. |
| 961 | * \param[in] Control Interface Command String |
| 962 | * \returns parsed command, including reply; NULL on error */ |
| 963 | struct ctrl_cmd *ctrl_cmd_exec_from_string(struct ctrl_handle *ch, const char *cmdstr) |
| 964 | { |
| 965 | struct msgb *msg = msgb_alloc(1024, "ctrl-cmd"); |
| 966 | struct ctrl_cmd *cmd; |
| 967 | |
| 968 | if (!msg) |
| 969 | return NULL; |
| 970 | msg->l2h = msg->data; |
| 971 | osmo_strlcpy((char *)msg->data, cmdstr, msgb_tailroom(msg)); |
| 972 | msgb_put(msg, strlen(cmdstr)); |
| 973 | |
Neels Hofmeyr | c0b0b62 | 2017-12-16 01:12:35 +0100 | [diff] [blame] | 974 | cmd = ctrl_cmd_parse2(ch, msg); |
Harald Welte | f85861d | 2017-04-16 19:17:10 +0200 | [diff] [blame] | 975 | msgb_free(msg); |
| 976 | if (!cmd) |
| 977 | return NULL; |
Neels Hofmeyr | c0b0b62 | 2017-12-16 01:12:35 +0100 | [diff] [blame] | 978 | if (cmd->type == CTRL_TYPE_ERROR) |
| 979 | return cmd; |
| 980 | if (ctrl_cmd_handle(ch, cmd, NULL) == CTRL_CMD_HANDLED) { |
| 981 | /* No reply should be sent back. */ |
Harald Welte | f85861d | 2017-04-16 19:17:10 +0200 | [diff] [blame] | 982 | talloc_free(cmd); |
Neels Hofmeyr | c0b0b62 | 2017-12-16 01:12:35 +0100 | [diff] [blame] | 983 | cmd = NULL; |
Harald Welte | f85861d | 2017-04-16 19:17:10 +0200 | [diff] [blame] | 984 | } |
| 985 | return cmd; |
| 986 | } |