Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1 | /* A Media Gateway Control Protocol Media Gateway: RFC 3435 */ |
| 2 | /* The protocol implementation */ |
| 3 | |
| 4 | /* |
Holger Hans Peter Freyther | 8d0be25 | 2012-11-29 12:54:22 +0100 | [diff] [blame] | 5 | * (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org> |
| 6 | * (C) 2009-2012 by On-Waves |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 7 | * All Rights Reserved |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 10 | * it under the terms of the GNU Affero General Public License as published by |
| 11 | * the Free Software Foundation; either version 3 of the License, or |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 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 |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 17 | * GNU Affero General Public License for more details. |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 18 | * |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 19 | * You should have received a copy of the GNU Affero General Public License |
| 20 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include <ctype.h> |
| 25 | #include <stdio.h> |
| 26 | #include <stdlib.h> |
| 27 | #include <string.h> |
| 28 | #include <time.h> |
| 29 | #include <limits.h> |
| 30 | #include <unistd.h> |
Jacob Erlbeck | 845d005 | 2014-03-17 12:30:56 +0100 | [diff] [blame] | 31 | #include <errno.h> |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 32 | |
Pablo Neira Ayuso | 136f453 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 33 | #include <osmocom/core/msgb.h> |
| 34 | #include <osmocom/core/talloc.h> |
| 35 | #include <osmocom/core/select.h> |
Holger Hans Peter Freyther | 16b7f5c | 2011-02-28 22:06:47 +0100 | [diff] [blame] | 36 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 37 | #include <openbsc/mgcp.h> |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 38 | #include <openbsc/mgcp_internal.h> |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 39 | |
Jacob Erlbeck | a01bd60 | 2013-11-29 13:43:43 +0100 | [diff] [blame] | 40 | #define for_each_non_empty_line(line, save) \ |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 41 | for (line = strtok_r(NULL, "\r\n", &save); line;\ |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 42 | line = strtok_r(NULL, "\r\n", &save)) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 43 | |
Jacob Erlbeck | 2bee7f9 | 2013-11-29 13:43:44 +0100 | [diff] [blame] | 44 | #define for_each_line(line, save) \ |
| 45 | for (line = strline_r(NULL, &save); line;\ |
| 46 | line = strline_r(NULL, &save)) |
| 47 | |
| 48 | char *strline_r(char *str, char **saveptr) |
| 49 | { |
| 50 | char *result; |
| 51 | |
| 52 | if (str) |
| 53 | *saveptr = str; |
| 54 | |
| 55 | result = *saveptr; |
| 56 | |
| 57 | if (*saveptr != NULL) { |
| 58 | *saveptr = strpbrk(*saveptr, "\r\n"); |
| 59 | |
| 60 | if (*saveptr != NULL) { |
| 61 | char *eos = *saveptr; |
| 62 | |
| 63 | if ((*saveptr)[0] == '\r' && (*saveptr)[1] == '\n') |
| 64 | (*saveptr)++; |
| 65 | (*saveptr)++; |
| 66 | if ((*saveptr)[0] == '\0') |
| 67 | *saveptr = NULL; |
| 68 | |
| 69 | *eos = '\0'; |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | return result; |
| 74 | } |
| 75 | |
Jacob Erlbeck | 72c3090 | 2013-11-25 15:23:35 +0100 | [diff] [blame] | 76 | /* Assume audio frame length of 20ms */ |
| 77 | #define DEFAULT_RTP_AUDIO_FRAME_DUR_NUM 20 |
| 78 | #define DEFAULT_RTP_AUDIO_FRAME_DUR_DEN 1000 |
Jacob Erlbeck | f6ec0e9 | 2013-12-04 10:30:11 +0100 | [diff] [blame] | 79 | #define DEFAULT_RTP_AUDIO_PACKET_DURATION_MS 20 |
Jacob Erlbeck | 72c3090 | 2013-11-25 15:23:35 +0100 | [diff] [blame] | 80 | #define DEFAULT_RTP_AUDIO_DEFAULT_RATE 8000 |
Jacob Erlbeck | 845d005 | 2014-03-17 12:30:56 +0100 | [diff] [blame] | 81 | #define DEFAULT_RTP_AUDIO_DEFAULT_CHANNELS 1 |
Jacob Erlbeck | 72c3090 | 2013-11-25 15:23:35 +0100 | [diff] [blame] | 82 | |
Jacob Erlbeck | 452c183 | 2014-05-09 19:42:17 +0200 | [diff] [blame] | 83 | #define PTYPE_UNDEFINED (-1) |
| 84 | |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 85 | static void mgcp_rtp_end_reset(struct mgcp_rtp_end *end); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 86 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 87 | struct mgcp_parse_data { |
| 88 | struct mgcp_config *cfg; |
| 89 | struct mgcp_endpoint *endp; |
| 90 | char *trans; |
| 91 | char *save; |
| 92 | int found; |
| 93 | }; |
| 94 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 95 | struct mgcp_request { |
| 96 | char *name; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 97 | struct msgb *(*handle_request) (struct mgcp_parse_data *data); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 98 | char *debug_name; |
| 99 | }; |
| 100 | |
| 101 | #define MGCP_REQUEST(NAME, REQ, DEBUG_NAME) \ |
| 102 | { .name = NAME, .handle_request = REQ, .debug_name = DEBUG_NAME }, |
| 103 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 104 | static struct msgb *handle_audit_endpoint(struct mgcp_parse_data *data); |
| 105 | static struct msgb *handle_create_con(struct mgcp_parse_data *data); |
| 106 | static struct msgb *handle_delete_con(struct mgcp_parse_data *data); |
| 107 | static struct msgb *handle_modify_con(struct mgcp_parse_data *data); |
| 108 | static struct msgb *handle_rsip(struct mgcp_parse_data *data); |
| 109 | static struct msgb *handle_noti_req(struct mgcp_parse_data *data); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 110 | |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 111 | static void create_transcoder(struct mgcp_endpoint *endp); |
| 112 | static void delete_transcoder(struct mgcp_endpoint *endp); |
| 113 | |
Holger Hans Peter Freyther | 7cce1d3 | 2015-03-26 20:34:12 +0100 | [diff] [blame] | 114 | static int setup_rtp_processing(struct mgcp_endpoint *endp); |
Jacob Erlbeck | a0d64ce | 2014-03-13 14:24:52 +0100 | [diff] [blame] | 115 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 116 | static int mgcp_analyze_header(struct mgcp_parse_data *parse, char *data); |
| 117 | |
Holger Hans Peter Freyther | 1cc5ff8 | 2014-05-22 15:03:10 +0200 | [diff] [blame] | 118 | static int mgcp_check_param(const struct mgcp_endpoint *endp, const char *line) |
| 119 | { |
| 120 | const size_t line_len = strlen(line); |
| 121 | if (line[0] != '\0' && line_len < 2) { |
| 122 | LOGP(DMGCP, LOGL_ERROR, |
| 123 | "Wrong MGCP option format: '%s' on 0x%x\n", |
| 124 | line, ENDPOINT_NUMBER(endp)); |
| 125 | return 0; |
| 126 | } |
| 127 | |
| 128 | return 1; |
| 129 | } |
| 130 | |
Holger Hans Peter Freyther | 4634013 | 2010-08-06 08:26:54 +0800 | [diff] [blame] | 131 | static uint32_t generate_call_id(struct mgcp_config *cfg) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 132 | { |
| 133 | int i; |
| 134 | |
| 135 | /* use the call id */ |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 136 | ++cfg->last_call_id; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 137 | |
| 138 | /* handle wrap around */ |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 139 | if (cfg->last_call_id == CI_UNUSED) |
| 140 | ++cfg->last_call_id; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 141 | |
| 142 | /* callstack can only be of size number_of_endpoints */ |
| 143 | /* verify that the call id is free, e.g. in case of overrun */ |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 144 | for (i = 1; i < cfg->trunk.number_endpoints; ++i) |
| 145 | if (cfg->trunk.endpoints[i].ci == cfg->last_call_id) |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 146 | return generate_call_id(cfg); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 147 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 148 | return cfg->last_call_id; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 149 | } |
| 150 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 151 | /* |
| 152 | * array of function pointers for handling various |
| 153 | * messages. In the future this might be binary sorted |
| 154 | * for performance reasons. |
| 155 | */ |
| 156 | static const struct mgcp_request mgcp_requests [] = { |
| 157 | MGCP_REQUEST("AUEP", handle_audit_endpoint, "AuditEndpoint") |
| 158 | MGCP_REQUEST("CRCX", handle_create_con, "CreateConnection") |
| 159 | MGCP_REQUEST("DLCX", handle_delete_con, "DeleteConnection") |
| 160 | MGCP_REQUEST("MDCX", handle_modify_con, "ModifiyConnection") |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 161 | MGCP_REQUEST("RQNT", handle_noti_req, "NotificationRequest") |
Holger Hans Peter Freyther | 9bdcc9c | 2010-03-31 06:39:35 +0200 | [diff] [blame] | 162 | |
| 163 | /* SPEC extension */ |
| 164 | MGCP_REQUEST("RSIP", handle_rsip, "ReSetInProgress") |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 165 | }; |
| 166 | |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 167 | static struct msgb *mgcp_msgb_alloc(void) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 168 | { |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 169 | struct msgb *msg; |
| 170 | msg = msgb_alloc_headroom(4096, 128, "MGCP msg"); |
| 171 | if (!msg) |
| 172 | LOGP(DMGCP, LOGL_ERROR, "Failed to msgb for MGCP data.\n"); |
| 173 | |
| 174 | return msg; |
| 175 | } |
| 176 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 177 | static struct msgb *do_retransmission(const struct mgcp_endpoint *endp) |
| 178 | { |
| 179 | struct msgb *msg = mgcp_msgb_alloc(); |
| 180 | if (!msg) |
| 181 | return NULL; |
| 182 | |
| 183 | msg->l2h = msgb_put(msg, strlen(endp->last_response)); |
| 184 | memcpy(msg->l2h, endp->last_response, msgb_l2len(msg)); |
| 185 | return msg; |
| 186 | } |
| 187 | |
Holger Hans Peter Freyther | a769dcb | 2012-12-07 15:14:27 +0100 | [diff] [blame] | 188 | static struct msgb *create_resp(struct mgcp_endpoint *endp, int code, |
| 189 | const char *txt, const char *msg, |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 190 | const char *trans, const char *param, |
| 191 | const char *sdp) |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 192 | { |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 193 | int len; |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 194 | struct msgb *res; |
| 195 | |
| 196 | res = mgcp_msgb_alloc(); |
| 197 | if (!res) |
| 198 | return NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 199 | |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 200 | len = snprintf((char *) res->data, 2048, "%d %s%s%s\r\n%s", |
| 201 | code, trans, txt, param ? param : "", sdp ? sdp : ""); |
| 202 | if (len < 0) { |
| 203 | LOGP(DMGCP, LOGL_ERROR, "Failed to sprintf MGCP response.\n"); |
| 204 | msgb_free(res); |
| 205 | return NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 206 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 207 | |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 208 | res->l2h = msgb_put(res, len); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 209 | LOGP(DMGCP, LOGL_DEBUG, "Generated response: code: %d for '%s'\n", code, res->l2h); |
| 210 | |
| 211 | /* |
| 212 | * Remember the last transmission per endpoint. |
| 213 | */ |
| 214 | if (endp) { |
| 215 | struct mgcp_trunk_config *tcfg = endp->tcfg; |
| 216 | talloc_free(endp->last_response); |
| 217 | talloc_free(endp->last_trans); |
| 218 | endp->last_trans = talloc_strdup(tcfg->endpoints, trans); |
| 219 | endp->last_response = talloc_strndup(tcfg->endpoints, |
| 220 | (const char *) res->l2h, |
| 221 | msgb_l2len(res)); |
| 222 | } |
| 223 | |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 224 | return res; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 225 | } |
| 226 | |
Holger Hans Peter Freyther | a769dcb | 2012-12-07 15:14:27 +0100 | [diff] [blame] | 227 | static struct msgb *create_ok_resp_with_param(struct mgcp_endpoint *endp, |
| 228 | int code, const char *msg, |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 229 | const char *trans, const char *param) |
| 230 | { |
Holger Hans Peter Freyther | a769dcb | 2012-12-07 15:14:27 +0100 | [diff] [blame] | 231 | return create_resp(endp, code, " OK", msg, trans, param, NULL); |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 232 | } |
| 233 | |
Holger Hans Peter Freyther | a769dcb | 2012-12-07 15:14:27 +0100 | [diff] [blame] | 234 | static struct msgb *create_ok_response(struct mgcp_endpoint *endp, |
| 235 | int code, const char *msg, const char *trans) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 236 | { |
Holger Hans Peter Freyther | a769dcb | 2012-12-07 15:14:27 +0100 | [diff] [blame] | 237 | return create_ok_resp_with_param(endp, code, msg, trans, NULL); |
Holger Hans Peter Freyther | 6adac17 | 2011-01-06 16:19:55 +0100 | [diff] [blame] | 238 | } |
| 239 | |
Holger Hans Peter Freyther | a769dcb | 2012-12-07 15:14:27 +0100 | [diff] [blame] | 240 | static struct msgb *create_err_response(struct mgcp_endpoint *endp, |
| 241 | int code, const char *msg, const char *trans) |
Holger Hans Peter Freyther | 6adac17 | 2011-01-06 16:19:55 +0100 | [diff] [blame] | 242 | { |
Holger Hans Peter Freyther | a769dcb | 2012-12-07 15:14:27 +0100 | [diff] [blame] | 243 | return create_resp(endp, code, " FAIL", msg, trans, NULL, NULL); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 244 | } |
| 245 | |
Jacob Erlbeck | 997e1e8 | 2014-03-14 18:01:20 +0100 | [diff] [blame] | 246 | static int write_response_sdp(struct mgcp_endpoint *endp, |
| 247 | char *sdp_record, size_t size, const char *addr) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 248 | { |
Jacob Erlbeck | 168ca00 | 2014-03-17 12:40:07 +0100 | [diff] [blame] | 249 | const char *fmtp_extra; |
| 250 | const char *audio_name; |
| 251 | int payload_type; |
Jacob Erlbeck | 0a1bc56 | 2013-12-10 13:09:37 +0100 | [diff] [blame] | 252 | int len; |
Jacob Erlbeck | 997e1e8 | 2014-03-14 18:01:20 +0100 | [diff] [blame] | 253 | int nchars; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 254 | |
Jacob Erlbeck | 168ca00 | 2014-03-17 12:40:07 +0100 | [diff] [blame] | 255 | endp->cfg->get_net_downlink_format_cb(endp, &payload_type, |
| 256 | &audio_name, &fmtp_extra); |
| 257 | |
Jacob Erlbeck | 997e1e8 | 2014-03-14 18:01:20 +0100 | [diff] [blame] | 258 | len = snprintf(sdp_record, size, |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 259 | "v=0\r\n" |
Holger Hans Peter Freyther | c7e49d3 | 2011-07-20 20:43:15 +0200 | [diff] [blame] | 260 | "o=- %u 23 IN IP4 %s\r\n" |
Holger Hans Peter Freyther | b1edf7b | 2014-11-20 23:17:32 +0100 | [diff] [blame] | 261 | "s=-\r\n" |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 262 | "c=IN IP4 %s\r\n" |
Jacob Erlbeck | 997e1e8 | 2014-03-14 18:01:20 +0100 | [diff] [blame] | 263 | "t=0 0\r\n", |
| 264 | endp->ci, addr, addr); |
Jacob Erlbeck | 0a1bc56 | 2013-12-10 13:09:37 +0100 | [diff] [blame] | 265 | |
Jacob Erlbeck | 997e1e8 | 2014-03-14 18:01:20 +0100 | [diff] [blame] | 266 | if (len < 0 || len >= size) |
Jacob Erlbeck | 0a1bc56 | 2013-12-10 13:09:37 +0100 | [diff] [blame] | 267 | goto buffer_too_small; |
| 268 | |
Jacob Erlbeck | 997e1e8 | 2014-03-14 18:01:20 +0100 | [diff] [blame] | 269 | if (payload_type >= 0) { |
| 270 | nchars = snprintf(sdp_record + len, size - len, |
| 271 | "m=audio %d RTP/AVP %d\r\n", |
| 272 | endp->net_end.local_port, payload_type); |
| 273 | if (nchars < 0 || nchars >= size - len) |
| 274 | goto buffer_too_small; |
| 275 | |
| 276 | len += nchars; |
| 277 | |
Holger Hans Peter Freyther | 619b014 | 2014-11-19 16:04:45 +0100 | [diff] [blame] | 278 | if (audio_name && endp->tcfg->audio_send_name) { |
Jacob Erlbeck | 997e1e8 | 2014-03-14 18:01:20 +0100 | [diff] [blame] | 279 | nchars = snprintf(sdp_record + len, size - len, |
| 280 | "a=rtpmap:%d %s\r\n", |
| 281 | payload_type, audio_name); |
| 282 | |
| 283 | if (nchars < 0 || nchars >= size - len) |
| 284 | goto buffer_too_small; |
| 285 | |
| 286 | len += nchars; |
| 287 | } |
| 288 | |
| 289 | if (fmtp_extra) { |
| 290 | nchars = snprintf(sdp_record + len, size - len, |
Jacob Erlbeck | cb04ca2 | 2014-06-12 12:42:38 +0200 | [diff] [blame] | 291 | "%s\r\n", fmtp_extra); |
Jacob Erlbeck | 997e1e8 | 2014-03-14 18:01:20 +0100 | [diff] [blame] | 292 | |
| 293 | if (nchars < 0 || nchars >= size - len) |
| 294 | goto buffer_too_small; |
| 295 | |
| 296 | len += nchars; |
| 297 | } |
| 298 | } |
Jacob Erlbeck | 0a1bc56 | 2013-12-10 13:09:37 +0100 | [diff] [blame] | 299 | if (endp->bts_end.packet_duration_ms > 0 && endp->tcfg->audio_send_ptime) { |
Jacob Erlbeck | 997e1e8 | 2014-03-14 18:01:20 +0100 | [diff] [blame] | 300 | nchars = snprintf(sdp_record + len, size - len, |
| 301 | "a=ptime:%d\r\n", |
| 302 | endp->bts_end.packet_duration_ms); |
| 303 | if (nchars < 0 || nchars >= size - len) |
Jacob Erlbeck | 0a1bc56 | 2013-12-10 13:09:37 +0100 | [diff] [blame] | 304 | goto buffer_too_small; |
| 305 | |
| 306 | len += nchars; |
| 307 | } |
Jacob Erlbeck | 997e1e8 | 2014-03-14 18:01:20 +0100 | [diff] [blame] | 308 | |
| 309 | return len; |
Jacob Erlbeck | 0a1bc56 | 2013-12-10 13:09:37 +0100 | [diff] [blame] | 310 | |
| 311 | buffer_too_small: |
Holger Hans Peter Freyther | c6e32ad | 2015-01-02 11:25:54 +0100 | [diff] [blame] | 312 | LOGP(DMGCP, LOGL_ERROR, "SDP buffer too small: %zu (needed %d)\n", |
Jacob Erlbeck | 997e1e8 | 2014-03-14 18:01:20 +0100 | [diff] [blame] | 313 | size, len); |
| 314 | return -1; |
| 315 | } |
| 316 | |
| 317 | static struct msgb *create_response_with_sdp(struct mgcp_endpoint *endp, |
| 318 | const char *msg, const char *trans_id) |
| 319 | { |
| 320 | const char *addr = endp->cfg->local_ip; |
| 321 | char sdp_record[4096]; |
| 322 | int len; |
| 323 | int nchars; |
Pablo Neira Ayuso | b769f3c | 2014-08-27 17:02:52 +0200 | [diff] [blame] | 324 | char osmux_extension[strlen("\nX-Osmux: 255") + 1]; |
Jacob Erlbeck | 997e1e8 | 2014-03-14 18:01:20 +0100 | [diff] [blame] | 325 | |
| 326 | if (!addr) |
| 327 | addr = endp->cfg->source_addr; |
| 328 | |
Pablo Neira Ayuso | b769f3c | 2014-08-27 17:02:52 +0200 | [diff] [blame] | 329 | if (endp->osmux.state == OSMUX_STATE_ACTIVATING) |
| 330 | sprintf(osmux_extension, "\nX-Osmux: %u", endp->osmux.cid); |
| 331 | else |
| 332 | osmux_extension[0] = '\0'; |
Jacob Erlbeck | 997e1e8 | 2014-03-14 18:01:20 +0100 | [diff] [blame] | 333 | |
Pablo Neira Ayuso | b769f3c | 2014-08-27 17:02:52 +0200 | [diff] [blame] | 334 | len = snprintf(sdp_record, sizeof(sdp_record), |
| 335 | "I: %u%s\n\n", endp->ci, osmux_extension); |
Jacob Erlbeck | 997e1e8 | 2014-03-14 18:01:20 +0100 | [diff] [blame] | 336 | if (len < 0) |
| 337 | return NULL; |
| 338 | |
| 339 | nchars = write_response_sdp(endp, sdp_record + len, |
| 340 | sizeof(sdp_record) - len - 1, addr); |
| 341 | if (nchars < 0) |
| 342 | return NULL; |
| 343 | |
| 344 | len += nchars; |
| 345 | |
| 346 | sdp_record[sizeof(sdp_record) - 1] = '\0'; |
| 347 | |
| 348 | return create_resp(endp, 200, " OK", msg, trans_id, NULL, sdp_record); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 349 | } |
| 350 | |
Holger Hans Peter Freyther | 6b0ba01 | 2014-07-08 13:01:56 +0200 | [diff] [blame] | 351 | static void send_dummy(struct mgcp_endpoint *endp) |
| 352 | { |
Pablo Neira Ayuso | b769f3c | 2014-08-27 17:02:52 +0200 | [diff] [blame] | 353 | if (endp->osmux.state != OSMUX_STATE_DISABLED) |
Holger Hans Peter Freyther | 6b0ba01 | 2014-07-08 13:01:56 +0200 | [diff] [blame] | 354 | osmux_send_dummy(endp); |
| 355 | else |
| 356 | mgcp_send_dummy(endp); |
| 357 | } |
| 358 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 359 | /* |
| 360 | * handle incoming messages: |
| 361 | * - this can be a command (four letters, space, transaction id) |
| 362 | * - or a response (three numbers, space, transaction id) |
| 363 | */ |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 364 | struct msgb *mgcp_handle_message(struct mgcp_config *cfg, struct msgb *msg) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 365 | { |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 366 | struct mgcp_parse_data pdata; |
| 367 | int i, code, handled = 0; |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 368 | struct msgb *resp = NULL; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 369 | char *data; |
Jacob Erlbeck | 9107e2d | 2013-12-03 17:14:44 +0100 | [diff] [blame] | 370 | unsigned char *tail = msg->l2h + msgb_l2len(msg); /* char after l2 data */ |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 371 | |
Holger Hans Peter Freyther | f36a11a | 2010-03-31 13:26:46 +0200 | [diff] [blame] | 372 | if (msgb_l2len(msg) < 4) { |
Holger Hans Peter Freyther | 0d904e0 | 2012-12-07 16:46:19 +0100 | [diff] [blame] | 373 | LOGP(DMGCP, LOGL_ERROR, "msg too short: %d\n", msg->len); |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 374 | return NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 375 | } |
| 376 | |
Jacob Erlbeck | 9107e2d | 2013-12-03 17:14:44 +0100 | [diff] [blame] | 377 | /* Ensure that the msg->l2h is NUL terminated. */ |
| 378 | if (tail[-1] == '\0') |
| 379 | /* nothing to do */; |
| 380 | else if (msgb_tailroom(msg) > 0) |
| 381 | tail[0] = '\0'; |
| 382 | else if (tail[-1] == '\r' || tail[-1] == '\n') |
| 383 | tail[-1] = '\0'; |
| 384 | else { |
| 385 | LOGP(DMGCP, LOGL_ERROR, "Cannot NUL terminate MGCP message: " |
| 386 | "Length: %d, Buffer size: %d\n", |
| 387 | msgb_l2len(msg), msg->data_len); |
| 388 | return NULL; |
| 389 | } |
| 390 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 391 | /* attempt to treat it as a response */ |
Holger Hans Peter Freyther | f36a11a | 2010-03-31 13:26:46 +0200 | [diff] [blame] | 392 | if (sscanf((const char *)&msg->l2h[0], "%3d %*s", &code) == 1) { |
Holger Hans Peter Freyther | 63f2db2 | 2010-02-26 13:30:57 +0100 | [diff] [blame] | 393 | LOGP(DMGCP, LOGL_DEBUG, "Response: Code: %d\n", code); |
Holger Hans Peter Freyther | 29de346 | 2012-12-07 16:07:46 +0100 | [diff] [blame] | 394 | return NULL; |
| 395 | } |
| 396 | |
| 397 | msg->l3h = &msg->l2h[4]; |
| 398 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 399 | |
| 400 | /* |
| 401 | * Check for a duplicate message and respond. |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 402 | */ |
| 403 | memset(&pdata, 0, sizeof(pdata)); |
| 404 | pdata.cfg = cfg; |
Jacob Erlbeck | 1771171 | 2013-11-29 13:43:46 +0100 | [diff] [blame] | 405 | data = strline_r((char *) msg->l3h, &pdata.save); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 406 | pdata.found = mgcp_analyze_header(&pdata, data); |
| 407 | if (pdata.endp && pdata.trans |
| 408 | && pdata.endp->last_trans |
| 409 | && strcmp(pdata.endp->last_trans, pdata.trans) == 0) { |
| 410 | return do_retransmission(pdata.endp); |
| 411 | } |
| 412 | |
Holger Hans Peter Freyther | 29de346 | 2012-12-07 16:07:46 +0100 | [diff] [blame] | 413 | for (i = 0; i < ARRAY_SIZE(mgcp_requests); ++i) { |
| 414 | if (strncmp(mgcp_requests[i].name, (const char *) &msg->l2h[0], 4) == 0) { |
| 415 | handled = 1; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 416 | resp = mgcp_requests[i].handle_request(&pdata); |
Holger Hans Peter Freyther | 29de346 | 2012-12-07 16:07:46 +0100 | [diff] [blame] | 417 | break; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 418 | } |
| 419 | } |
| 420 | |
Holger Hans Peter Freyther | 29de346 | 2012-12-07 16:07:46 +0100 | [diff] [blame] | 421 | if (!handled) |
| 422 | LOGP(DMGCP, LOGL_NOTICE, "MSG with type: '%.4s' not handled\n", &msg->l2h[0]); |
| 423 | |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 424 | return resp; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 425 | } |
| 426 | |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 427 | /** |
| 428 | * We have a null terminated string with the endpoint name here. We only |
| 429 | * support two kinds. Simple ones as seen on the BSC level and the ones |
| 430 | * seen on the trunk side. |
| 431 | */ |
| 432 | static struct mgcp_endpoint *find_e1_endpoint(struct mgcp_config *cfg, |
| 433 | const char *mgcp) |
| 434 | { |
| 435 | char *rest = NULL; |
Holger Hans Peter Freyther | 74e6111 | 2011-02-28 14:13:47 +0100 | [diff] [blame] | 436 | struct mgcp_trunk_config *tcfg; |
| 437 | int trunk, endp; |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 438 | |
| 439 | trunk = strtoul(mgcp + 6, &rest, 10); |
Holger Hans Peter Freyther | f43f2fc | 2011-01-07 11:30:21 +0100 | [diff] [blame] | 440 | if (rest == NULL || rest[0] != '/' || trunk < 1) { |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 441 | LOGP(DMGCP, LOGL_ERROR, "Wrong trunk name '%s'\n", mgcp); |
| 442 | return NULL; |
| 443 | } |
| 444 | |
| 445 | endp = strtoul(rest + 1, &rest, 10); |
| 446 | if (rest == NULL || rest[0] != '@') { |
Holger Hans Peter Freyther | f43f2fc | 2011-01-07 11:30:21 +0100 | [diff] [blame] | 447 | LOGP(DMGCP, LOGL_ERROR, "Wrong endpoint name '%s'\n", mgcp); |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 448 | return NULL; |
| 449 | } |
| 450 | |
| 451 | /* signalling is on timeslot 1 */ |
| 452 | if (endp == 1) |
| 453 | return NULL; |
| 454 | |
Holger Hans Peter Freyther | 74e6111 | 2011-02-28 14:13:47 +0100 | [diff] [blame] | 455 | tcfg = mgcp_trunk_num(cfg, trunk); |
| 456 | if (!tcfg) { |
| 457 | LOGP(DMGCP, LOGL_ERROR, "The trunk %d is not declared.\n", trunk); |
| 458 | return NULL; |
| 459 | } |
| 460 | |
| 461 | if (!tcfg->endpoints) { |
| 462 | LOGP(DMGCP, LOGL_ERROR, "Endpoints of trunk %d not allocated.\n", trunk); |
| 463 | return NULL; |
| 464 | } |
| 465 | |
| 466 | if (endp < 1 || endp >= tcfg->number_endpoints) { |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 467 | LOGP(DMGCP, LOGL_ERROR, "Failed to find endpoint '%s'\n", mgcp); |
Holger Hans Peter Freyther | 45c2184 | 2011-01-07 11:36:54 +0100 | [diff] [blame] | 468 | return NULL; |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 469 | } |
| 470 | |
Holger Hans Peter Freyther | 74e6111 | 2011-02-28 14:13:47 +0100 | [diff] [blame] | 471 | return &tcfg->endpoints[endp]; |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 472 | } |
| 473 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 474 | static struct mgcp_endpoint *find_endpoint(struct mgcp_config *cfg, const char *mgcp) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 475 | { |
| 476 | char *endptr = NULL; |
| 477 | unsigned int gw = INT_MAX; |
| 478 | |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 479 | if (strncmp(mgcp, "ds/e1", 5) == 0) { |
| 480 | return find_e1_endpoint(cfg, mgcp); |
| 481 | } else { |
| 482 | gw = strtoul(mgcp, &endptr, 16); |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 483 | if (gw > 0 && gw < cfg->trunk.number_endpoints && strcmp(endptr, "@mgw") == 0) |
| 484 | return &cfg->trunk.endpoints[gw]; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 485 | } |
| 486 | |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 487 | LOGP(DMGCP, LOGL_ERROR, "Not able to find endpoint: '%s'\n", mgcp); |
| 488 | return NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 489 | } |
| 490 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 491 | /** |
| 492 | * @returns 0 when the status line was complete and transaction_id and |
| 493 | * endp out parameters are set. |
| 494 | */ |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 495 | static int mgcp_analyze_header(struct mgcp_parse_data *pdata, char *data) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 496 | { |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 497 | int i = 0; |
Holger Hans Peter Freyther | 1eba7de | 2013-07-03 10:23:35 +0200 | [diff] [blame] | 498 | char *elem, *save = NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 499 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 500 | pdata->trans = "000000"; |
Holger Hans Peter Freyther | a820c5f | 2010-02-26 13:32:55 +0100 | [diff] [blame] | 501 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 502 | for (elem = strtok_r(data, " ", &save); elem; |
| 503 | elem = strtok_r(NULL, " ", &save)) { |
| 504 | switch (i) { |
| 505 | case 0: |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 506 | pdata->trans = elem; |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 507 | break; |
| 508 | case 1: |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 509 | pdata->endp = find_endpoint(pdata->cfg, elem); |
| 510 | if (!pdata->endp) { |
| 511 | LOGP(DMGCP, LOGL_ERROR, |
| 512 | "Unable to find Endpoint `%s'\n", elem); |
| 513 | return -1; |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 514 | } |
| 515 | break; |
| 516 | case 2: |
| 517 | if (strcmp("MGCP", elem)) { |
| 518 | LOGP(DMGCP, LOGL_ERROR, |
| 519 | "MGCP header parsing error\n"); |
| 520 | return -1; |
| 521 | } |
| 522 | break; |
| 523 | case 3: |
| 524 | if (strcmp("1.0", elem)) { |
| 525 | LOGP(DMGCP, LOGL_ERROR, "MGCP version `%s' " |
| 526 | "not supported\n", elem); |
| 527 | return -1; |
| 528 | } |
| 529 | break; |
| 530 | } |
| 531 | i++; |
| 532 | } |
| 533 | |
| 534 | if (i != 4) { |
| 535 | LOGP(DMGCP, LOGL_ERROR, "MGCP status line too short.\n"); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 536 | pdata->trans = "000000"; |
| 537 | pdata->endp = NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 538 | return -1; |
| 539 | } |
| 540 | |
Holger Hans Peter Freyther | f2f1591 | 2010-04-01 03:27:04 +0200 | [diff] [blame] | 541 | return 0; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 542 | } |
| 543 | |
| 544 | static int verify_call_id(const struct mgcp_endpoint *endp, |
| 545 | const char *callid) |
| 546 | { |
| 547 | if (strcmp(endp->callid, callid) != 0) { |
Holger Hans Peter Freyther | 2ada71d | 2010-02-03 09:13:10 +0100 | [diff] [blame] | 548 | LOGP(DMGCP, LOGL_ERROR, "CallIDs does not match on 0x%x. '%s' != '%s'\n", |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 549 | ENDPOINT_NUMBER(endp), endp->callid, callid); |
| 550 | return -1; |
| 551 | } |
| 552 | |
| 553 | return 0; |
| 554 | } |
| 555 | |
| 556 | static int verify_ci(const struct mgcp_endpoint *endp, |
Holger Hans Peter Freyther | 4634013 | 2010-08-06 08:26:54 +0800 | [diff] [blame] | 557 | const char *_ci) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 558 | { |
Holger Hans Peter Freyther | 4634013 | 2010-08-06 08:26:54 +0800 | [diff] [blame] | 559 | uint32_t ci = strtoul(_ci, NULL, 10); |
| 560 | |
| 561 | if (ci != endp->ci) { |
| 562 | LOGP(DMGCP, LOGL_ERROR, "ConnectionIdentifiers do not match on 0x%x. %u != %s\n", |
| 563 | ENDPOINT_NUMBER(endp), endp->ci, _ci); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 564 | return -1; |
| 565 | } |
| 566 | |
| 567 | return 0; |
| 568 | } |
| 569 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 570 | static struct msgb *handle_audit_endpoint(struct mgcp_parse_data *p) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 571 | { |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 572 | if (p->found != 0) |
| 573 | return create_err_response(NULL, 500, "AUEP", p->trans); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 574 | else |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 575 | return create_ok_response(p->endp, 200, "AUEP", p->trans); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 576 | } |
| 577 | |
Jacob Erlbeck | 2645c9e | 2013-12-19 12:23:24 +0100 | [diff] [blame] | 578 | static int parse_conn_mode(const char *msg, struct mgcp_endpoint *endp) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 579 | { |
| 580 | int ret = 0; |
| 581 | if (strcmp(msg, "recvonly") == 0) |
Jacob Erlbeck | 2645c9e | 2013-12-19 12:23:24 +0100 | [diff] [blame] | 582 | endp->conn_mode = MGCP_CONN_RECV_ONLY; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 583 | else if (strcmp(msg, "sendrecv") == 0) |
Jacob Erlbeck | 2645c9e | 2013-12-19 12:23:24 +0100 | [diff] [blame] | 584 | endp->conn_mode = MGCP_CONN_RECV_SEND; |
Holger Hans Peter Freyther | e02860a | 2010-09-18 20:21:44 +0800 | [diff] [blame] | 585 | else if (strcmp(msg, "sendonly") == 0) |
Jacob Erlbeck | 2645c9e | 2013-12-19 12:23:24 +0100 | [diff] [blame] | 586 | endp->conn_mode = MGCP_CONN_SEND_ONLY; |
Holger Hans Peter Freyther | 98a3877 | 2010-08-03 02:27:21 +0800 | [diff] [blame] | 587 | else if (strcmp(msg, "loopback") == 0) |
Jacob Erlbeck | 2645c9e | 2013-12-19 12:23:24 +0100 | [diff] [blame] | 588 | endp->conn_mode = MGCP_CONN_LOOPBACK; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 589 | else { |
Holger Hans Peter Freyther | 2ada71d | 2010-02-03 09:13:10 +0100 | [diff] [blame] | 590 | LOGP(DMGCP, LOGL_ERROR, "Unknown connection mode: '%s'\n", msg); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 591 | ret = -1; |
| 592 | } |
| 593 | |
Jacob Erlbeck | e35fd13 | 2014-01-16 16:50:40 +0100 | [diff] [blame] | 594 | endp->net_end.output_enabled = |
| 595 | endp->conn_mode & MGCP_CONN_SEND_ONLY ? 1 : 0; |
| 596 | endp->bts_end.output_enabled = |
| 597 | endp->conn_mode & MGCP_CONN_RECV_ONLY ? 1 : 0; |
Jacob Erlbeck | 2645c9e | 2013-12-19 12:23:24 +0100 | [diff] [blame] | 598 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 599 | return ret; |
| 600 | } |
| 601 | |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 602 | static int set_audio_info(void *ctx, struct mgcp_rtp_codec *codec, |
Jacob Erlbeck | 845d005 | 2014-03-17 12:30:56 +0100 | [diff] [blame] | 603 | int payload_type, const char *audio_name) |
| 604 | { |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 605 | int rate = codec->rate; |
| 606 | int channels = codec->channels; |
Jacob Erlbeck | 845d005 | 2014-03-17 12:30:56 +0100 | [diff] [blame] | 607 | char audio_codec[64]; |
| 608 | |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 609 | talloc_free(codec->subtype_name); |
| 610 | codec->subtype_name = NULL; |
| 611 | talloc_free(codec->audio_name); |
| 612 | codec->audio_name = NULL; |
Jacob Erlbeck | 845d005 | 2014-03-17 12:30:56 +0100 | [diff] [blame] | 613 | |
Jacob Erlbeck | 452c183 | 2014-05-09 19:42:17 +0200 | [diff] [blame] | 614 | if (payload_type != PTYPE_UNDEFINED) |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 615 | codec->payload_type = payload_type; |
Jacob Erlbeck | 845d005 | 2014-03-17 12:30:56 +0100 | [diff] [blame] | 616 | |
| 617 | if (!audio_name) { |
| 618 | switch (payload_type) { |
| 619 | case 3: audio_name = "GSM/8000/1"; break; |
| 620 | case 8: audio_name = "PCMA/8000/1"; break; |
| 621 | case 18: audio_name = "G729/8000/1"; break; |
| 622 | default: |
| 623 | /* Payload type is unknown, don't change rate and |
| 624 | * channels. */ |
| 625 | /* TODO: return value? */ |
| 626 | return 0; |
| 627 | } |
| 628 | } |
| 629 | |
| 630 | if (sscanf(audio_name, "%63[^/]/%d/%d", |
Jacob Erlbeck | 452c183 | 2014-05-09 19:42:17 +0200 | [diff] [blame] | 631 | audio_codec, &rate, &channels) < 1) |
Jacob Erlbeck | 845d005 | 2014-03-17 12:30:56 +0100 | [diff] [blame] | 632 | return -EINVAL; |
| 633 | |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 634 | codec->rate = rate; |
| 635 | codec->channels = channels; |
| 636 | codec->subtype_name = talloc_strdup(ctx, audio_codec); |
| 637 | codec->audio_name = talloc_strdup(ctx, audio_name); |
Jacob Erlbeck | 42a833e | 2014-04-14 10:31:47 +0200 | [diff] [blame] | 638 | |
| 639 | if (!strcmp(audio_codec, "G729")) { |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 640 | codec->frame_duration_num = 10; |
| 641 | codec->frame_duration_den = 1000; |
Jacob Erlbeck | 42a833e | 2014-04-14 10:31:47 +0200 | [diff] [blame] | 642 | } else { |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 643 | codec->frame_duration_num = DEFAULT_RTP_AUDIO_FRAME_DUR_NUM; |
| 644 | codec->frame_duration_den = DEFAULT_RTP_AUDIO_FRAME_DUR_DEN; |
Jacob Erlbeck | 42a833e | 2014-04-14 10:31:47 +0200 | [diff] [blame] | 645 | } |
| 646 | |
Jacob Erlbeck | 452c183 | 2014-05-09 19:42:17 +0200 | [diff] [blame] | 647 | if (payload_type < 0) { |
| 648 | payload_type = 96; |
| 649 | if (rate == 8000 && channels == 1) { |
| 650 | if (!strcmp(audio_codec, "GSM")) |
| 651 | payload_type = 3; |
| 652 | else if (!strcmp(audio_codec, "PCMA")) |
| 653 | payload_type = 8; |
| 654 | else if (!strcmp(audio_codec, "G729")) |
| 655 | payload_type = 18; |
| 656 | } |
| 657 | |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 658 | codec->payload_type = payload_type; |
Jacob Erlbeck | 452c183 | 2014-05-09 19:42:17 +0200 | [diff] [blame] | 659 | } |
| 660 | |
Jacob Erlbeck | 845d005 | 2014-03-17 12:30:56 +0100 | [diff] [blame] | 661 | if (channels != 1) |
| 662 | LOGP(DMGCP, LOGL_NOTICE, |
| 663 | "Channels != 1 in SDP: '%s'\n", audio_name); |
| 664 | |
| 665 | return 0; |
| 666 | } |
| 667 | |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 668 | static int allocate_port(struct mgcp_endpoint *endp, struct mgcp_rtp_end *end, |
Holger Hans Peter Freyther | 218f856 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 669 | struct mgcp_port_range *range, |
| 670 | int (*alloc)(struct mgcp_endpoint *endp, int port)) |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 671 | { |
| 672 | int i; |
| 673 | |
| 674 | if (range->mode == PORT_ALLOC_STATIC) { |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 675 | end->local_alloc = PORT_ALLOC_STATIC; |
| 676 | return 0; |
| 677 | } |
| 678 | |
| 679 | /* attempt to find a port */ |
| 680 | for (i = 0; i < 200; ++i) { |
| 681 | int rc; |
| 682 | |
| 683 | if (range->last_port >= range->range_end) |
| 684 | range->last_port = range->range_start; |
| 685 | |
Holger Hans Peter Freyther | 218f856 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 686 | rc = alloc(endp, range->last_port); |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 687 | |
| 688 | range->last_port += 2; |
| 689 | if (rc == 0) { |
| 690 | end->local_alloc = PORT_ALLOC_DYNAMIC; |
| 691 | return 0; |
| 692 | } |
| 693 | |
| 694 | } |
| 695 | |
Holger Hans Peter Freyther | 218f856 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 696 | LOGP(DMGCP, LOGL_ERROR, "Allocating a RTP/RTCP port failed 200 times 0x%x.\n", |
| 697 | ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 698 | return -1; |
| 699 | } |
| 700 | |
| 701 | static int allocate_ports(struct mgcp_endpoint *endp) |
| 702 | { |
Holger Hans Peter Freyther | 218f856 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 703 | if (allocate_port(endp, &endp->net_end, &endp->cfg->net_ports, |
| 704 | mgcp_bind_net_rtp_port) != 0) |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 705 | return -1; |
| 706 | |
Holger Hans Peter Freyther | 218f856 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 707 | if (allocate_port(endp, &endp->bts_end, &endp->cfg->bts_ports, |
| 708 | mgcp_bind_bts_rtp_port) != 0) { |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 709 | mgcp_rtp_end_reset(&endp->net_end); |
| 710 | return -1; |
| 711 | } |
| 712 | |
Holger Hans Peter Freyther | 6990687 | 2011-02-28 14:51:48 +0100 | [diff] [blame] | 713 | if (endp->cfg->transcoder_ip && endp->tcfg->trunk_type == MGCP_TRUNK_VIRTUAL) { |
Holger Hans Peter Freyther | 2126233 | 2010-11-01 20:53:31 +0100 | [diff] [blame] | 714 | if (allocate_port(endp, &endp->trans_net, |
Holger Hans Peter Freyther | b54048f | 2010-11-01 19:57:50 +0100 | [diff] [blame] | 715 | &endp->cfg->transcoder_ports, |
Holger Hans Peter Freyther | bd7b3c5 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 716 | mgcp_bind_trans_net_rtp_port) != 0) { |
Holger Hans Peter Freyther | b54048f | 2010-11-01 19:57:50 +0100 | [diff] [blame] | 717 | mgcp_rtp_end_reset(&endp->net_end); |
| 718 | mgcp_rtp_end_reset(&endp->bts_end); |
| 719 | return -1; |
| 720 | } |
| 721 | |
Holger Hans Peter Freyther | bd7b3c5 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 722 | if (allocate_port(endp, &endp->trans_bts, |
| 723 | &endp->cfg->transcoder_ports, |
| 724 | mgcp_bind_trans_bts_rtp_port) != 0) { |
| 725 | mgcp_rtp_end_reset(&endp->net_end); |
| 726 | mgcp_rtp_end_reset(&endp->bts_end); |
| 727 | mgcp_rtp_end_reset(&endp->trans_net); |
| 728 | return -1; |
| 729 | } |
| 730 | |
Holger Hans Peter Freyther | b54048f | 2010-11-01 19:57:50 +0100 | [diff] [blame] | 731 | /* remember that we have set up transcoding */ |
Pablo Neira Ayuso | 46bd424 | 2013-07-08 05:09:46 +0200 | [diff] [blame] | 732 | endp->type = MGCP_RTP_TRANSCODED; |
Holger Hans Peter Freyther | 218f856 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 733 | } |
| 734 | |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 735 | return 0; |
| 736 | } |
| 737 | |
Jacob Erlbeck | 1771171 | 2013-11-29 13:43:46 +0100 | [diff] [blame] | 738 | static int parse_sdp_data(struct mgcp_rtp_end *rtp, struct mgcp_parse_data *p) |
| 739 | { |
| 740 | char *line; |
| 741 | int found_media = 0; |
Holger Hans Peter Freyther | e46bc27 | 2014-09-01 10:50:22 +0200 | [diff] [blame] | 742 | /* TODO/XXX make it more generic */ |
Jacob Erlbeck | 24754f0 | 2013-12-10 13:09:37 +0100 | [diff] [blame] | 743 | int audio_payload = -1; |
Holger Hans Peter Freyther | e46bc27 | 2014-09-01 10:50:22 +0200 | [diff] [blame] | 744 | int audio_payload_alt = -1; |
Jacob Erlbeck | 1771171 | 2013-11-29 13:43:46 +0100 | [diff] [blame] | 745 | |
| 746 | for_each_line(line, p->save) { |
| 747 | switch (line[0]) { |
Jacob Erlbeck | 1771171 | 2013-11-29 13:43:46 +0100 | [diff] [blame] | 748 | case 'o': |
| 749 | case 's': |
| 750 | case 't': |
| 751 | case 'v': |
| 752 | /* skip these SDP attributes */ |
| 753 | break; |
Jacob Erlbeck | 24754f0 | 2013-12-10 13:09:37 +0100 | [diff] [blame] | 754 | case 'a': { |
| 755 | int payload; |
Jacob Erlbeck | 24754f0 | 2013-12-10 13:09:37 +0100 | [diff] [blame] | 756 | int ptime, ptime2 = 0; |
| 757 | char audio_name[64]; |
Jacob Erlbeck | 24754f0 | 2013-12-10 13:09:37 +0100 | [diff] [blame] | 758 | |
| 759 | if (audio_payload == -1) |
| 760 | break; |
| 761 | |
Holger Hans Peter Freyther | 4f0381b | 2014-05-28 16:44:34 +0200 | [diff] [blame] | 762 | if (sscanf(line, "a=rtpmap:%d %63s", |
Jacob Erlbeck | 24754f0 | 2013-12-10 13:09:37 +0100 | [diff] [blame] | 763 | &payload, audio_name) == 2) { |
Holger Hans Peter Freyther | e46bc27 | 2014-09-01 10:50:22 +0200 | [diff] [blame] | 764 | if (payload == audio_payload) |
| 765 | set_audio_info(p->cfg, &rtp->codec, |
| 766 | payload, audio_name); |
| 767 | else if (payload == audio_payload_alt) |
| 768 | set_audio_info(p->cfg, &rtp->alt_codec, |
| 769 | payload, audio_name); |
Jacob Erlbeck | 24754f0 | 2013-12-10 13:09:37 +0100 | [diff] [blame] | 770 | } else if (sscanf(line, "a=ptime:%d-%d", |
| 771 | &ptime, &ptime2) >= 1) { |
| 772 | if (ptime2 > 0 && ptime2 != ptime) |
| 773 | rtp->packet_duration_ms = 0; |
| 774 | else |
| 775 | rtp->packet_duration_ms = ptime; |
| 776 | } else if (sscanf(line, "a=maxptime:%d", &ptime2) == 1) { |
Holger Hans Peter Freyther | e46bc27 | 2014-09-01 10:50:22 +0200 | [diff] [blame] | 777 | /* TODO/XXX: Store this per codec and derive it on use */ |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 778 | if (ptime2 * rtp->codec.frame_duration_den > |
| 779 | rtp->codec.frame_duration_num * 1500) |
Jacob Erlbeck | 24754f0 | 2013-12-10 13:09:37 +0100 | [diff] [blame] | 780 | /* more than 1 frame */ |
| 781 | rtp->packet_duration_ms = 0; |
| 782 | } |
| 783 | break; |
| 784 | } |
Jacob Erlbeck | 1771171 | 2013-11-29 13:43:46 +0100 | [diff] [blame] | 785 | case 'm': { |
Holger Hans Peter Freyther | e46bc27 | 2014-09-01 10:50:22 +0200 | [diff] [blame] | 786 | int port, rc; |
Jacob Erlbeck | 24754f0 | 2013-12-10 13:09:37 +0100 | [diff] [blame] | 787 | audio_payload = -1; |
Holger Hans Peter Freyther | e46bc27 | 2014-09-01 10:50:22 +0200 | [diff] [blame] | 788 | audio_payload_alt = -1; |
Jacob Erlbeck | 1771171 | 2013-11-29 13:43:46 +0100 | [diff] [blame] | 789 | |
Holger Hans Peter Freyther | e46bc27 | 2014-09-01 10:50:22 +0200 | [diff] [blame] | 790 | rc = sscanf(line, "m=audio %d RTP/AVP %d %d", |
| 791 | &port, &audio_payload, &audio_payload_alt); |
| 792 | if (rc >= 2) { |
Jacob Erlbeck | 1771171 | 2013-11-29 13:43:46 +0100 | [diff] [blame] | 793 | rtp->rtp_port = htons(port); |
| 794 | rtp->rtcp_port = htons(port + 1); |
Jacob Erlbeck | 1771171 | 2013-11-29 13:43:46 +0100 | [diff] [blame] | 795 | found_media = 1; |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 796 | set_audio_info(p->cfg, &rtp->codec, audio_payload, NULL); |
Holger Hans Peter Freyther | e46bc27 | 2014-09-01 10:50:22 +0200 | [diff] [blame] | 797 | if (rc == 3) |
| 798 | set_audio_info(p->cfg, &rtp->alt_codec, |
| 799 | audio_payload_alt, NULL); |
Jacob Erlbeck | 1771171 | 2013-11-29 13:43:46 +0100 | [diff] [blame] | 800 | } |
| 801 | break; |
| 802 | } |
| 803 | case 'c': { |
| 804 | char ipv4[16]; |
| 805 | |
| 806 | if (sscanf(line, "c=IN IP4 %15s", ipv4) == 1) { |
| 807 | inet_aton(ipv4, &rtp->addr); |
| 808 | } |
| 809 | break; |
| 810 | } |
| 811 | default: |
| 812 | if (p->endp) |
| 813 | LOGP(DMGCP, LOGL_NOTICE, |
| 814 | "Unhandled SDP option: '%c'/%d on 0x%x\n", |
| 815 | line[0], line[0], ENDPOINT_NUMBER(p->endp)); |
| 816 | else |
| 817 | LOGP(DMGCP, LOGL_NOTICE, |
| 818 | "Unhandled SDP option: '%c'/%d\n", |
| 819 | line[0], line[0]); |
| 820 | break; |
| 821 | } |
| 822 | } |
| 823 | |
| 824 | if (found_media) |
| 825 | LOGP(DMGCP, LOGL_NOTICE, |
Jacob Erlbeck | 997e1e8 | 2014-03-14 18:01:20 +0100 | [diff] [blame] | 826 | "Got media info via SDP: port %d, payload %d (%s), " |
Jacob Erlbeck | 24754f0 | 2013-12-10 13:09:37 +0100 | [diff] [blame] | 827 | "duration %d, addr %s\n", |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 828 | ntohs(rtp->rtp_port), rtp->codec.payload_type, |
| 829 | rtp->codec.subtype_name ? rtp->codec.subtype_name : "unknown", |
Jacob Erlbeck | 24754f0 | 2013-12-10 13:09:37 +0100 | [diff] [blame] | 830 | rtp->packet_duration_ms, inet_ntoa(rtp->addr)); |
Jacob Erlbeck | 1771171 | 2013-11-29 13:43:46 +0100 | [diff] [blame] | 831 | |
| 832 | return found_media; |
| 833 | } |
| 834 | |
Jacob Erlbeck | 2c2ca4d | 2013-12-09 14:32:03 +0100 | [diff] [blame] | 835 | /* Set the LCO from a string (see RFC 3435). |
| 836 | * The string is stored in the 'string' field. A NULL string is handled excatly |
| 837 | * like an empty string, the 'string' field is never NULL after this function |
| 838 | * has been called. */ |
| 839 | static void set_local_cx_options(void *ctx, struct mgcp_lco *lco, |
| 840 | const char *options) |
| 841 | { |
Jacob Erlbeck | 452c183 | 2014-05-09 19:42:17 +0200 | [diff] [blame] | 842 | char *p_opt, *a_opt; |
| 843 | char codec[9]; |
Jacob Erlbeck | 2c2ca4d | 2013-12-09 14:32:03 +0100 | [diff] [blame] | 844 | |
| 845 | talloc_free(lco->string); |
Jacob Erlbeck | 452c183 | 2014-05-09 19:42:17 +0200 | [diff] [blame] | 846 | talloc_free(lco->codec); |
| 847 | lco->codec = NULL; |
Jacob Erlbeck | 2c2ca4d | 2013-12-09 14:32:03 +0100 | [diff] [blame] | 848 | lco->pkt_period_min = lco->pkt_period_max = 0; |
| 849 | lco->string = talloc_strdup(ctx, options ? options : ""); |
| 850 | |
| 851 | p_opt = strstr(lco->string, "p:"); |
| 852 | if (p_opt && sscanf(p_opt, "p:%d-%d", |
| 853 | &lco->pkt_period_min, &lco->pkt_period_max) == 1) |
| 854 | lco->pkt_period_max = lco->pkt_period_min; |
Jacob Erlbeck | 452c183 | 2014-05-09 19:42:17 +0200 | [diff] [blame] | 855 | |
| 856 | a_opt = strstr(lco->string, "a:"); |
| 857 | if (a_opt && sscanf(a_opt, "a:%8[^,]", codec) == 1) |
| 858 | lco->codec = talloc_strdup(ctx, codec); |
Jacob Erlbeck | 2c2ca4d | 2013-12-09 14:32:03 +0100 | [diff] [blame] | 859 | } |
| 860 | |
Jacob Erlbeck | db2d431 | 2013-12-03 14:43:34 +0100 | [diff] [blame] | 861 | void mgcp_rtp_end_config(struct mgcp_endpoint *endp, int expect_ssrc_change, |
| 862 | struct mgcp_rtp_end *rtp) |
| 863 | { |
| 864 | struct mgcp_trunk_config *tcfg = endp->tcfg; |
| 865 | |
Jacob Erlbeck | e2292f3 | 2013-12-03 15:13:12 +0100 | [diff] [blame] | 866 | int patch_ssrc = expect_ssrc_change && tcfg->force_constant_ssrc; |
| 867 | |
Jacob Erlbeck | 4bbddc6 | 2013-12-18 12:54:51 +0100 | [diff] [blame] | 868 | rtp->force_aligned_timing = tcfg->force_aligned_timing; |
Jacob Erlbeck | e2292f3 | 2013-12-03 15:13:12 +0100 | [diff] [blame] | 869 | rtp->force_constant_ssrc = patch_ssrc ? 1 : 0; |
Jacob Erlbeck | db2d431 | 2013-12-03 14:43:34 +0100 | [diff] [blame] | 870 | |
| 871 | LOGP(DMGCP, LOGL_DEBUG, |
| 872 | "Configuring RTP endpoint: local port %d%s%s\n", |
| 873 | ntohs(rtp->rtp_port), |
Jacob Erlbeck | 4bbddc6 | 2013-12-18 12:54:51 +0100 | [diff] [blame] | 874 | rtp->force_aligned_timing ? ", force constant timing" : "", |
Jacob Erlbeck | db2d431 | 2013-12-03 14:43:34 +0100 | [diff] [blame] | 875 | rtp->force_constant_ssrc ? ", force constant ssrc" : ""); |
| 876 | } |
| 877 | |
Jacob Erlbeck | f6ec0e9 | 2013-12-04 10:30:11 +0100 | [diff] [blame] | 878 | uint32_t mgcp_rtp_packet_duration(struct mgcp_endpoint *endp, |
| 879 | struct mgcp_rtp_end *rtp) |
| 880 | { |
| 881 | int f = 0; |
| 882 | |
| 883 | /* Get the number of frames per channel and packet */ |
| 884 | if (rtp->frames_per_packet) |
| 885 | f = rtp->frames_per_packet; |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 886 | else if (rtp->packet_duration_ms && rtp->codec.frame_duration_num) { |
| 887 | int den = 1000 * rtp->codec.frame_duration_num; |
| 888 | f = (rtp->packet_duration_ms * rtp->codec.frame_duration_den + den/2) |
Jacob Erlbeck | f6ec0e9 | 2013-12-04 10:30:11 +0100 | [diff] [blame] | 889 | / den; |
| 890 | } |
| 891 | |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 892 | return rtp->codec.rate * f * rtp->codec.frame_duration_num / rtp->codec.frame_duration_den; |
Jacob Erlbeck | f6ec0e9 | 2013-12-04 10:30:11 +0100 | [diff] [blame] | 893 | } |
| 894 | |
Pablo Neira Ayuso | b769f3c | 2014-08-27 17:02:52 +0200 | [diff] [blame] | 895 | static int mgcp_parse_osmux_cid(const char *line) |
| 896 | { |
Pablo Neira Ayuso | 3ba3cf8 | 2014-08-29 08:46:05 +0200 | [diff] [blame] | 897 | int osmux_cid; |
Pablo Neira Ayuso | b769f3c | 2014-08-27 17:02:52 +0200 | [diff] [blame] | 898 | |
Pablo Neira Ayuso | 3ba3cf8 | 2014-08-29 08:46:05 +0200 | [diff] [blame] | 899 | if (sscanf(line + 2, "Osmux: %u", &osmux_cid) != 1) |
| 900 | return -1; |
| 901 | |
Pablo Neira Ayuso | b769f3c | 2014-08-27 17:02:52 +0200 | [diff] [blame] | 902 | if (osmux_cid > OSMUX_CID_MAX) { |
| 903 | LOGP(DMGCP, LOGL_ERROR, "Osmux ID too large: %u > %u\n", |
| 904 | osmux_cid, OSMUX_CID_MAX); |
| 905 | return -1; |
| 906 | } |
| 907 | LOGP(DMGCP, LOGL_DEBUG, "bsc-nat offered Osmux CID %u\n", osmux_cid); |
| 908 | |
| 909 | return osmux_cid; |
| 910 | } |
| 911 | |
| 912 | static int mgcp_osmux_setup(struct mgcp_endpoint *endp, const char *line) |
Pablo Neira Ayuso | 8be171e | 2014-08-27 14:58:43 +0200 | [diff] [blame] | 913 | { |
| 914 | if (!endp->cfg->osmux_init) { |
| 915 | if (osmux_init(OSMUX_ROLE_BSC, endp->cfg) < 0) { |
| 916 | LOGP(DMGCP, LOGL_ERROR, "Cannot init OSMUX\n"); |
| 917 | return -1; |
| 918 | } |
| 919 | LOGP(DMGCP, LOGL_NOTICE, "OSMUX socket has been set up\n"); |
| 920 | } |
| 921 | |
Pablo Neira Ayuso | b769f3c | 2014-08-27 17:02:52 +0200 | [diff] [blame] | 922 | return mgcp_parse_osmux_cid(line); |
Pablo Neira Ayuso | 8be171e | 2014-08-27 14:58:43 +0200 | [diff] [blame] | 923 | } |
| 924 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 925 | static struct msgb *handle_create_con(struct mgcp_parse_data *p) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 926 | { |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 927 | struct mgcp_trunk_config *tcfg; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 928 | struct mgcp_endpoint *endp = p->endp; |
Holger Hans Peter Freyther | 9e9392d | 2010-08-08 16:24:48 +0800 | [diff] [blame] | 929 | int error_code = 400; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 930 | |
Holger Hans Peter Freyther | 3488c3d | 2011-07-20 20:44:54 +0200 | [diff] [blame] | 931 | const char *local_options = NULL; |
| 932 | const char *callid = NULL; |
| 933 | const char *mode = NULL; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 934 | char *line; |
Pablo Neira Ayuso | b769f3c | 2014-08-27 17:02:52 +0200 | [diff] [blame] | 935 | int have_sdp = 0, osmux_cid = -1; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 936 | |
| 937 | if (p->found != 0) |
| 938 | return create_err_response(NULL, 510, "CRCX", p->trans); |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 939 | |
Holger Hans Peter Freyther | 3488c3d | 2011-07-20 20:44:54 +0200 | [diff] [blame] | 940 | /* parse CallID C: and LocalParameters L: */ |
Jacob Erlbeck | 1771171 | 2013-11-29 13:43:46 +0100 | [diff] [blame] | 941 | for_each_line(line, p->save) { |
Holger Hans Peter Freyther | 1cc5ff8 | 2014-05-22 15:03:10 +0200 | [diff] [blame] | 942 | if (!mgcp_check_param(endp, line)) |
| 943 | continue; |
| 944 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 945 | switch (line[0]) { |
| 946 | case 'L': |
| 947 | local_options = (const char *) line + 3; |
| 948 | break; |
| 949 | case 'C': |
| 950 | callid = (const char *) line + 3; |
| 951 | break; |
| 952 | case 'M': |
| 953 | mode = (const char *) line + 3; |
| 954 | break; |
Pablo Neira Ayuso | cab6e75 | 2014-02-05 18:56:17 +0100 | [diff] [blame] | 955 | case 'X': |
Pablo Neira Ayuso | b769f3c | 2014-08-27 17:02:52 +0200 | [diff] [blame] | 956 | /* Osmux is not enabled in this bsc, ignore it so the |
| 957 | * bsc-nat knows that we don't want to use Osmux. |
| 958 | */ |
| 959 | if (!p->endp->cfg->osmux) |
| 960 | break; |
| 961 | |
| 962 | if (strncmp("Osmux: ", line + 2, strlen("Osmux: ")) == 0) |
| 963 | osmux_cid = mgcp_osmux_setup(endp, line); |
Pablo Neira Ayuso | cab6e75 | 2014-02-05 18:56:17 +0100 | [diff] [blame] | 964 | break; |
Jacob Erlbeck | 78a9501 | 2013-11-29 13:43:49 +0100 | [diff] [blame] | 965 | case '\0': |
| 966 | have_sdp = 1; |
| 967 | goto mgcp_header_done; |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 968 | default: |
| 969 | LOGP(DMGCP, LOGL_NOTICE, "Unhandled option: '%c'/%d on 0x%x\n", |
| 970 | *line, *line, ENDPOINT_NUMBER(endp)); |
| 971 | break; |
| 972 | } |
Holger Hans Peter Freyther | 3488c3d | 2011-07-20 20:44:54 +0200 | [diff] [blame] | 973 | } |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 974 | |
Jacob Erlbeck | 78a9501 | 2013-11-29 13:43:49 +0100 | [diff] [blame] | 975 | mgcp_header_done: |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 976 | tcfg = p->endp->tcfg; |
Holger Hans Peter Freyther | 3488c3d | 2011-07-20 20:44:54 +0200 | [diff] [blame] | 977 | |
| 978 | /* Check required data */ |
| 979 | if (!callid || !mode) { |
| 980 | LOGP(DMGCP, LOGL_ERROR, "Missing callid and mode in CRCX on 0x%x\n", |
| 981 | ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 982 | return create_err_response(endp, 400, "CRCX", p->trans); |
Holger Hans Peter Freyther | 3488c3d | 2011-07-20 20:44:54 +0200 | [diff] [blame] | 983 | } |
| 984 | |
Holger Hans Peter Freyther | 39a97e2 | 2010-08-06 18:03:11 +0800 | [diff] [blame] | 985 | if (endp->allocated) { |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 986 | if (tcfg->force_realloc) { |
Holger Hans Peter Freyther | 408cc4a | 2010-04-07 10:51:27 +0200 | [diff] [blame] | 987 | LOGP(DMGCP, LOGL_NOTICE, "Endpoint 0x%x already allocated. Forcing realloc.\n", |
| 988 | ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | cb6ad70 | 2014-07-22 15:00:52 +0200 | [diff] [blame] | 989 | mgcp_release_endp(endp); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 990 | if (p->cfg->realloc_cb) |
| 991 | p->cfg->realloc_cb(tcfg, ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | 408cc4a | 2010-04-07 10:51:27 +0200 | [diff] [blame] | 992 | } else { |
| 993 | LOGP(DMGCP, LOGL_ERROR, "Endpoint is already used. 0x%x\n", |
| 994 | ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 995 | return create_err_response(endp, 400, "CRCX", p->trans); |
Holger Hans Peter Freyther | 408cc4a | 2010-04-07 10:51:27 +0200 | [diff] [blame] | 996 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 997 | } |
| 998 | |
Holger Hans Peter Freyther | 3488c3d | 2011-07-20 20:44:54 +0200 | [diff] [blame] | 999 | /* copy some parameters */ |
| 1000 | endp->callid = talloc_strdup(tcfg->endpoints, callid); |
| 1001 | |
Jacob Erlbeck | 2c2ca4d | 2013-12-09 14:32:03 +0100 | [diff] [blame] | 1002 | set_local_cx_options(endp->tcfg->endpoints, &endp->local_options, |
| 1003 | local_options); |
Holger Hans Peter Freyther | 3488c3d | 2011-07-20 20:44:54 +0200 | [diff] [blame] | 1004 | |
Jacob Erlbeck | 2645c9e | 2013-12-19 12:23:24 +0100 | [diff] [blame] | 1005 | if (parse_conn_mode(mode, endp) != 0) { |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1006 | error_code = 517; |
| 1007 | goto error2; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1008 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1009 | |
| 1010 | /* initialize */ |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 1011 | endp->net_end.rtp_port = endp->net_end.rtcp_port = endp->bts_end.rtp_port = endp->bts_end.rtcp_port = 0; |
Jacob Erlbeck | db2d431 | 2013-12-03 14:43:34 +0100 | [diff] [blame] | 1012 | mgcp_rtp_end_config(endp, 0, &endp->net_end); |
| 1013 | mgcp_rtp_end_config(endp, 0, &endp->bts_end); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1014 | |
| 1015 | /* set to zero until we get the info */ |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 1016 | memset(&endp->net_end.addr, 0, sizeof(endp->net_end.addr)); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1017 | |
| 1018 | /* bind to the port now */ |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 1019 | if (allocate_ports(endp) != 0) |
| 1020 | goto error2; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1021 | |
| 1022 | /* assign a local call identifier or fail */ |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1023 | endp->ci = generate_call_id(p->cfg); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1024 | if (endp->ci == CI_UNUSED) |
| 1025 | goto error2; |
| 1026 | |
Pablo Neira Ayuso | b769f3c | 2014-08-27 17:02:52 +0200 | [diff] [blame] | 1027 | /* Annotate Osmux circuit ID and set it to activating state until this |
| 1028 | * is fully set up from the dummy load. |
| 1029 | */ |
| 1030 | endp->osmux.state = OSMUX_STATE_DISABLED; |
| 1031 | if (osmux_cid >= 0) { |
| 1032 | endp->osmux.cid = osmux_cid; |
| 1033 | endp->osmux.state = OSMUX_STATE_ACTIVATING; |
| 1034 | } |
| 1035 | |
Holger Hans Peter Freyther | 39a97e2 | 2010-08-06 18:03:11 +0800 | [diff] [blame] | 1036 | endp->allocated = 1; |
Jacob Erlbeck | 78a9501 | 2013-11-29 13:43:49 +0100 | [diff] [blame] | 1037 | |
| 1038 | /* set up RTP media parameters */ |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 1039 | set_audio_info(p->cfg, &endp->bts_end.codec, tcfg->audio_payload, tcfg->audio_name); |
Holger Hans Peter Freyther | 5ea1bc7 | 2012-09-03 00:07:39 +0200 | [diff] [blame] | 1040 | endp->bts_end.fmtp_extra = talloc_strdup(tcfg->endpoints, |
| 1041 | tcfg->audio_fmtp_extra); |
Jacob Erlbeck | 42a833e | 2014-04-14 10:31:47 +0200 | [diff] [blame] | 1042 | if (have_sdp) |
Jacob Erlbeck | 78a9501 | 2013-11-29 13:43:49 +0100 | [diff] [blame] | 1043 | parse_sdp_data(&endp->net_end, p); |
Jacob Erlbeck | 452c183 | 2014-05-09 19:42:17 +0200 | [diff] [blame] | 1044 | else if (endp->local_options.codec) |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 1045 | set_audio_info(p->cfg, &endp->net_end.codec, |
Jacob Erlbeck | 452c183 | 2014-05-09 19:42:17 +0200 | [diff] [blame] | 1046 | PTYPE_UNDEFINED, endp->local_options.codec); |
Jacob Erlbeck | 42a833e | 2014-04-14 10:31:47 +0200 | [diff] [blame] | 1047 | |
| 1048 | if (p->cfg->bts_force_ptime) { |
| 1049 | endp->bts_end.packet_duration_ms = p->cfg->bts_force_ptime; |
| 1050 | endp->bts_end.force_output_ptime = 1; |
Jacob Erlbeck | a0d64ce | 2014-03-13 14:24:52 +0100 | [diff] [blame] | 1051 | } |
Holger Hans Peter Freyther | ef6bb25 | 2010-02-26 13:41:22 +0100 | [diff] [blame] | 1052 | |
Holger Hans Peter Freyther | 7cce1d3 | 2015-03-26 20:34:12 +0100 | [diff] [blame] | 1053 | if (setup_rtp_processing(endp) != 0) |
| 1054 | goto error2; |
Jacob Erlbeck | 42a833e | 2014-04-14 10:31:47 +0200 | [diff] [blame] | 1055 | |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 1056 | /* policy CB */ |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1057 | if (p->cfg->policy_cb) { |
| 1058 | int rc; |
| 1059 | rc = p->cfg->policy_cb(tcfg, ENDPOINT_NUMBER(endp), |
| 1060 | MGCP_ENDP_CRCX, p->trans); |
| 1061 | switch (rc) { |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 1062 | case MGCP_POLICY_REJECT: |
| 1063 | LOGP(DMGCP, LOGL_NOTICE, "CRCX rejected by policy on 0x%x\n", |
| 1064 | ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | cb6ad70 | 2014-07-22 15:00:52 +0200 | [diff] [blame] | 1065 | mgcp_release_endp(endp); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1066 | return create_err_response(endp, 400, "CRCX", p->trans); |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 1067 | break; |
| 1068 | case MGCP_POLICY_DEFER: |
| 1069 | /* stop processing */ |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1070 | create_transcoder(endp); |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 1071 | return NULL; |
| 1072 | break; |
| 1073 | case MGCP_POLICY_CONT: |
| 1074 | /* just continue */ |
| 1075 | break; |
| 1076 | } |
| 1077 | } |
| 1078 | |
Holger Hans Peter Freyther | e378cb1 | 2010-08-06 20:22:23 +0800 | [diff] [blame] | 1079 | LOGP(DMGCP, LOGL_DEBUG, "Creating endpoint on: 0x%x CI: %u port: %u/%u\n", |
Holger Hans Peter Freyther | 58ff219 | 2010-08-05 03:08:35 +0800 | [diff] [blame] | 1080 | ENDPOINT_NUMBER(endp), endp->ci, |
| 1081 | endp->net_end.local_port, endp->bts_end.local_port); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1082 | if (p->cfg->change_cb) |
| 1083 | p->cfg->change_cb(tcfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_CRCX); |
Holger Hans Peter Freyther | 77f7afe | 2010-02-03 09:54:43 +0100 | [diff] [blame] | 1084 | |
Pablo Neira Ayuso | cab6e75 | 2014-02-05 18:56:17 +0100 | [diff] [blame] | 1085 | if (endp->conn_mode & MGCP_CONN_RECV_ONLY && tcfg->keepalive_interval != 0) { |
Holger Hans Peter Freyther | 6b0ba01 | 2014-07-08 13:01:56 +0200 | [diff] [blame] | 1086 | send_dummy(endp); |
Pablo Neira Ayuso | cab6e75 | 2014-02-05 18:56:17 +0100 | [diff] [blame] | 1087 | } |
Jacob Erlbeck | 075a9eb | 2013-12-19 18:53:07 +0100 | [diff] [blame] | 1088 | |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1089 | create_transcoder(endp); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1090 | return create_response_with_sdp(endp, "CRCX", p->trans); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1091 | error2: |
Holger Hans Peter Freyther | cb6ad70 | 2014-07-22 15:00:52 +0200 | [diff] [blame] | 1092 | mgcp_release_endp(endp); |
Holger Hans Peter Freyther | 2ada71d | 2010-02-03 09:13:10 +0100 | [diff] [blame] | 1093 | LOGP(DMGCP, LOGL_NOTICE, "Resource error on 0x%x\n", ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1094 | return create_err_response(endp, error_code, "CRCX", p->trans); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1095 | } |
| 1096 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1097 | static struct msgb *handle_modify_con(struct mgcp_parse_data *p) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1098 | { |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1099 | struct mgcp_endpoint *endp = p->endp; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1100 | int error_code = 500; |
Pablo Neira Ayuso | b769f3c | 2014-08-27 17:02:52 +0200 | [diff] [blame] | 1101 | int silent = 0; |
Jacob Erlbeck | 452c183 | 2014-05-09 19:42:17 +0200 | [diff] [blame] | 1102 | int have_sdp = 0; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1103 | char *line; |
Jacob Erlbeck | 2c2ca4d | 2013-12-09 14:32:03 +0100 | [diff] [blame] | 1104 | const char *local_options = NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1105 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1106 | if (p->found != 0) |
| 1107 | return create_err_response(NULL, 510, "MDCX", p->trans); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1108 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1109 | if (endp->ci == CI_UNUSED) { |
| 1110 | LOGP(DMGCP, LOGL_ERROR, "Endpoint is not " |
| 1111 | "holding a connection. 0x%x\n", ENDPOINT_NUMBER(endp)); |
| 1112 | return create_err_response(endp, 400, "MDCX", p->trans); |
| 1113 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1114 | |
Jacob Erlbeck | 1771171 | 2013-11-29 13:43:46 +0100 | [diff] [blame] | 1115 | for_each_line(line, p->save) { |
Holger Hans Peter Freyther | 1cc5ff8 | 2014-05-22 15:03:10 +0200 | [diff] [blame] | 1116 | if (!mgcp_check_param(endp, line)) |
| 1117 | continue; |
| 1118 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 1119 | switch (line[0]) { |
| 1120 | case 'C': { |
| 1121 | if (verify_call_id(endp, line + 3) != 0) |
| 1122 | goto error3; |
| 1123 | break; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1124 | } |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 1125 | case 'I': { |
| 1126 | if (verify_ci(endp, line + 3) != 0) |
| 1127 | goto error3; |
| 1128 | break; |
| 1129 | } |
| 1130 | case 'L': |
Jacob Erlbeck | 2c2ca4d | 2013-12-09 14:32:03 +0100 | [diff] [blame] | 1131 | local_options = (const char *) line + 3; |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 1132 | break; |
| 1133 | case 'M': |
Jacob Erlbeck | 2645c9e | 2013-12-19 12:23:24 +0100 | [diff] [blame] | 1134 | if (parse_conn_mode(line + 3, endp) != 0) { |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 1135 | error_code = 517; |
| 1136 | goto error3; |
| 1137 | } |
| 1138 | endp->orig_mode = endp->conn_mode; |
| 1139 | break; |
| 1140 | case 'Z': |
| 1141 | silent = strcmp("noanswer", line + 3) == 0; |
| 1142 | break; |
| 1143 | case '\0': |
| 1144 | /* SDP file begins */ |
Jacob Erlbeck | 452c183 | 2014-05-09 19:42:17 +0200 | [diff] [blame] | 1145 | have_sdp = 1; |
Jacob Erlbeck | 1771171 | 2013-11-29 13:43:46 +0100 | [diff] [blame] | 1146 | parse_sdp_data(&endp->net_end, p); |
| 1147 | /* This will exhaust p->save, so the loop will |
| 1148 | * terminate next time. |
| 1149 | */ |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 1150 | break; |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 1151 | default: |
Jacob Erlbeck | 1771171 | 2013-11-29 13:43:46 +0100 | [diff] [blame] | 1152 | LOGP(DMGCP, LOGL_NOTICE, "Unhandled MGCP option: '%c'/%d on 0x%x\n", |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 1153 | line[0], line[0], ENDPOINT_NUMBER(endp)); |
| 1154 | break; |
| 1155 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1156 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1157 | |
Jacob Erlbeck | 2c2ca4d | 2013-12-09 14:32:03 +0100 | [diff] [blame] | 1158 | set_local_cx_options(endp->tcfg->endpoints, &endp->local_options, |
| 1159 | local_options); |
| 1160 | |
Jacob Erlbeck | 452c183 | 2014-05-09 19:42:17 +0200 | [diff] [blame] | 1161 | if (!have_sdp && endp->local_options.codec) |
Holger Hans Peter Freyther | cac2438 | 2014-09-01 10:35:55 +0200 | [diff] [blame] | 1162 | set_audio_info(p->cfg, &endp->net_end.codec, |
Jacob Erlbeck | 452c183 | 2014-05-09 19:42:17 +0200 | [diff] [blame] | 1163 | PTYPE_UNDEFINED, endp->local_options.codec); |
| 1164 | |
Holger Hans Peter Freyther | 7cce1d3 | 2015-03-26 20:34:12 +0100 | [diff] [blame] | 1165 | if (setup_rtp_processing(endp) != 0) |
| 1166 | goto error3; |
Jacob Erlbeck | a0d64ce | 2014-03-13 14:24:52 +0100 | [diff] [blame] | 1167 | |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 1168 | /* policy CB */ |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1169 | if (p->cfg->policy_cb) { |
| 1170 | int rc; |
| 1171 | rc = p->cfg->policy_cb(endp->tcfg, ENDPOINT_NUMBER(endp), |
| 1172 | MGCP_ENDP_MDCX, p->trans); |
| 1173 | switch (rc) { |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 1174 | case MGCP_POLICY_REJECT: |
| 1175 | LOGP(DMGCP, LOGL_NOTICE, "MDCX rejected by policy on 0x%x\n", |
| 1176 | ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 1177 | if (silent) |
| 1178 | goto out_silent; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1179 | return create_err_response(endp, 400, "MDCX", p->trans); |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 1180 | break; |
| 1181 | case MGCP_POLICY_DEFER: |
| 1182 | /* stop processing */ |
| 1183 | return NULL; |
| 1184 | break; |
| 1185 | case MGCP_POLICY_CONT: |
| 1186 | /* just continue */ |
| 1187 | break; |
| 1188 | } |
| 1189 | } |
| 1190 | |
Jacob Erlbeck | db2d431 | 2013-12-03 14:43:34 +0100 | [diff] [blame] | 1191 | mgcp_rtp_end_config(endp, 1, &endp->net_end); |
| 1192 | mgcp_rtp_end_config(endp, 1, &endp->bts_end); |
| 1193 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1194 | /* modify */ |
Holger Hans Peter Freyther | e378cb1 | 2010-08-06 20:22:23 +0800 | [diff] [blame] | 1195 | LOGP(DMGCP, LOGL_DEBUG, "Modified endpoint on: 0x%x Server: %s:%u\n", |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 1196 | ENDPOINT_NUMBER(endp), inet_ntoa(endp->net_end.addr), ntohs(endp->net_end.rtp_port)); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1197 | if (p->cfg->change_cb) |
| 1198 | p->cfg->change_cb(endp->tcfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_MDCX); |
Jacob Erlbeck | 075a9eb | 2013-12-19 18:53:07 +0100 | [diff] [blame] | 1199 | |
Jacob Erlbeck | e35fd13 | 2014-01-16 16:50:40 +0100 | [diff] [blame] | 1200 | if (endp->conn_mode & MGCP_CONN_RECV_ONLY && |
| 1201 | endp->tcfg->keepalive_interval != 0) |
Holger Hans Peter Freyther | 6b0ba01 | 2014-07-08 13:01:56 +0200 | [diff] [blame] | 1202 | send_dummy(endp); |
Jacob Erlbeck | 075a9eb | 2013-12-19 18:53:07 +0100 | [diff] [blame] | 1203 | |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 1204 | if (silent) |
| 1205 | goto out_silent; |
| 1206 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1207 | return create_response_with_sdp(endp, "MDCX", p->trans); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1208 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1209 | error3: |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1210 | return create_err_response(endp, error_code, "MDCX", p->trans); |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 1211 | |
| 1212 | |
| 1213 | out_silent: |
| 1214 | return NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1215 | } |
| 1216 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1217 | static struct msgb *handle_delete_con(struct mgcp_parse_data *p) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1218 | { |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1219 | struct mgcp_endpoint *endp = p->endp; |
Holger Hans Peter Freyther | 9e9392d | 2010-08-08 16:24:48 +0800 | [diff] [blame] | 1220 | int error_code = 400; |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 1221 | int silent = 0; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1222 | char *line; |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 1223 | char stats[1048]; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1224 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1225 | if (p->found != 0) |
| 1226 | return create_err_response(NULL, error_code, "DLCX", p->trans); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1227 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1228 | if (!p->endp->allocated) { |
| 1229 | LOGP(DMGCP, LOGL_ERROR, "Endpoint is not used. 0x%x\n", |
| 1230 | ENDPOINT_NUMBER(endp)); |
| 1231 | return create_err_response(endp, 400, "DLCX", p->trans); |
| 1232 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1233 | |
Jacob Erlbeck | 1771171 | 2013-11-29 13:43:46 +0100 | [diff] [blame] | 1234 | for_each_line(line, p->save) { |
Holger Hans Peter Freyther | 1cc5ff8 | 2014-05-22 15:03:10 +0200 | [diff] [blame] | 1235 | if (!mgcp_check_param(endp, line)) |
| 1236 | continue; |
| 1237 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 1238 | switch (line[0]) { |
| 1239 | case 'C': |
| 1240 | if (verify_call_id(endp, line + 3) != 0) |
| 1241 | goto error3; |
| 1242 | break; |
| 1243 | case 'I': |
| 1244 | if (verify_ci(endp, line + 3) != 0) |
| 1245 | goto error3; |
| 1246 | break; |
| 1247 | case 'Z': |
| 1248 | silent = strcmp("noanswer", line + 3) == 0; |
| 1249 | break; |
| 1250 | default: |
| 1251 | LOGP(DMGCP, LOGL_NOTICE, "Unhandled option: '%c'/%d on 0x%x\n", |
| 1252 | line[0], line[0], ENDPOINT_NUMBER(endp)); |
| 1253 | break; |
| 1254 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1255 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1256 | |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 1257 | /* policy CB */ |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1258 | if (p->cfg->policy_cb) { |
| 1259 | int rc; |
| 1260 | rc = p->cfg->policy_cb(endp->tcfg, ENDPOINT_NUMBER(endp), |
| 1261 | MGCP_ENDP_DLCX, p->trans); |
| 1262 | switch (rc) { |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 1263 | case MGCP_POLICY_REJECT: |
| 1264 | LOGP(DMGCP, LOGL_NOTICE, "DLCX rejected by policy on 0x%x\n", |
| 1265 | ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 1266 | if (silent) |
| 1267 | goto out_silent; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1268 | return create_err_response(endp, 400, "DLCX", p->trans); |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 1269 | break; |
| 1270 | case MGCP_POLICY_DEFER: |
| 1271 | /* stop processing */ |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1272 | delete_transcoder(endp); |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 1273 | return NULL; |
| 1274 | break; |
| 1275 | case MGCP_POLICY_CONT: |
| 1276 | /* just continue */ |
| 1277 | break; |
| 1278 | } |
| 1279 | } |
| 1280 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1281 | /* free the connection */ |
Holger Hans Peter Freyther | e378cb1 | 2010-08-06 20:22:23 +0800 | [diff] [blame] | 1282 | LOGP(DMGCP, LOGL_DEBUG, "Deleted endpoint on: 0x%x Server: %s:%u\n", |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 1283 | ENDPOINT_NUMBER(endp), inet_ntoa(endp->net_end.addr), ntohs(endp->net_end.rtp_port)); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1284 | |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 1285 | /* save the statistics of the current call */ |
| 1286 | mgcp_format_stats(endp, stats, sizeof(stats)); |
| 1287 | |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1288 | delete_transcoder(endp); |
Holger Hans Peter Freyther | cb6ad70 | 2014-07-22 15:00:52 +0200 | [diff] [blame] | 1289 | mgcp_release_endp(endp); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1290 | if (p->cfg->change_cb) |
| 1291 | p->cfg->change_cb(endp->tcfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_DLCX); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1292 | |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 1293 | if (silent) |
| 1294 | goto out_silent; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1295 | return create_ok_resp_with_param(endp, 250, "DLCX", p->trans, stats); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1296 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1297 | error3: |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1298 | return create_err_response(endp, error_code, "DLCX", p->trans); |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 1299 | |
| 1300 | out_silent: |
| 1301 | return NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1302 | } |
| 1303 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1304 | static struct msgb *handle_rsip(struct mgcp_parse_data *p) |
Holger Hans Peter Freyther | 9bdcc9c | 2010-03-31 06:39:35 +0200 | [diff] [blame] | 1305 | { |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1306 | if (p->found != 0) { |
Holger Hans Peter Freyther | 74db774 | 2011-06-10 00:04:55 +0200 | [diff] [blame] | 1307 | LOGP(DMGCP, LOGL_ERROR, "Failed to find the endpoint.\n"); |
| 1308 | return NULL; |
| 1309 | } |
| 1310 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1311 | if (p->cfg->reset_cb) |
| 1312 | p->cfg->reset_cb(p->endp->tcfg); |
Holger Hans Peter Freyther | 9bdcc9c | 2010-03-31 06:39:35 +0200 | [diff] [blame] | 1313 | return NULL; |
| 1314 | } |
| 1315 | |
Holger Hans Peter Freyther | 8d0be25 | 2012-11-29 12:54:22 +0100 | [diff] [blame] | 1316 | static char extract_tone(const char *line) |
| 1317 | { |
| 1318 | const char *str = strstr(line, "D/"); |
| 1319 | if (!str) |
| 1320 | return CHAR_MAX; |
| 1321 | |
| 1322 | return str[2]; |
| 1323 | } |
| 1324 | |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 1325 | /* |
| 1326 | * This can request like DTMF detection and forward, fax detection... it |
| 1327 | * can also request when the notification should be send and such. We don't |
| 1328 | * do this right now. |
| 1329 | */ |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1330 | static struct msgb *handle_noti_req(struct mgcp_parse_data *p) |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 1331 | { |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1332 | int res = 0; |
| 1333 | char *line; |
Holger Hans Peter Freyther | 9f3835b | 2013-05-21 17:04:35 +0200 | [diff] [blame] | 1334 | char tone = CHAR_MAX; |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 1335 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1336 | if (p->found != 0) |
| 1337 | return create_err_response(NULL, 400, "RQNT", p->trans); |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 1338 | |
Jacob Erlbeck | 1771171 | 2013-11-29 13:43:46 +0100 | [diff] [blame] | 1339 | for_each_line(line, p->save) { |
Holger Hans Peter Freyther | 8d0be25 | 2012-11-29 12:54:22 +0100 | [diff] [blame] | 1340 | switch (line[0]) { |
| 1341 | case 'S': |
| 1342 | tone = extract_tone(line); |
| 1343 | break; |
| 1344 | } |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 1345 | } |
Holger Hans Peter Freyther | 8d0be25 | 2012-11-29 12:54:22 +0100 | [diff] [blame] | 1346 | |
| 1347 | /* we didn't see a signal request with a tone */ |
| 1348 | if (tone == CHAR_MAX) |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1349 | return create_ok_response(p->endp, 200, "RQNT", p->trans); |
Holger Hans Peter Freyther | 8d0be25 | 2012-11-29 12:54:22 +0100 | [diff] [blame] | 1350 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1351 | if (p->cfg->rqnt_cb) |
| 1352 | res = p->cfg->rqnt_cb(p->endp, tone); |
Holger Hans Peter Freyther | 8d0be25 | 2012-11-29 12:54:22 +0100 | [diff] [blame] | 1353 | |
| 1354 | return res == 0 ? |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 1355 | create_ok_response(p->endp, 200, "RQNT", p->trans) : |
| 1356 | create_err_response(p->endp, res, "RQNT", p->trans); |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 1357 | } |
| 1358 | |
Jacob Erlbeck | 075a9eb | 2013-12-19 18:53:07 +0100 | [diff] [blame] | 1359 | static void mgcp_keepalive_timer_cb(void *_tcfg) |
| 1360 | { |
| 1361 | struct mgcp_trunk_config *tcfg = _tcfg; |
| 1362 | int i; |
| 1363 | LOGP(DMGCP, LOGL_DEBUG, "Triggered trunk %d keepalive timer.\n", |
| 1364 | tcfg->trunk_nr); |
| 1365 | |
| 1366 | if (tcfg->keepalive_interval <= 0) |
| 1367 | return; |
| 1368 | |
| 1369 | for (i = 1; i < tcfg->number_endpoints; ++i) { |
| 1370 | struct mgcp_endpoint *endp = &tcfg->endpoints[i]; |
| 1371 | if (endp->conn_mode == MGCP_CONN_RECV_ONLY) |
Holger Hans Peter Freyther | 6b0ba01 | 2014-07-08 13:01:56 +0200 | [diff] [blame] | 1372 | send_dummy(endp); |
Jacob Erlbeck | 075a9eb | 2013-12-19 18:53:07 +0100 | [diff] [blame] | 1373 | } |
| 1374 | |
| 1375 | LOGP(DMGCP, LOGL_DEBUG, "Rescheduling trunk %d keepalive timer.\n", |
| 1376 | tcfg->trunk_nr); |
| 1377 | osmo_timer_schedule(&tcfg->keepalive_timer, tcfg->keepalive_interval, 0); |
| 1378 | } |
| 1379 | |
| 1380 | void mgcp_trunk_set_keepalive(struct mgcp_trunk_config *tcfg, int interval) |
| 1381 | { |
| 1382 | tcfg->keepalive_interval = interval; |
| 1383 | tcfg->keepalive_timer.data = tcfg; |
| 1384 | tcfg->keepalive_timer.cb = mgcp_keepalive_timer_cb; |
| 1385 | |
| 1386 | if (interval <= 0) |
| 1387 | osmo_timer_del(&tcfg->keepalive_timer); |
| 1388 | else |
| 1389 | osmo_timer_schedule(&tcfg->keepalive_timer, |
| 1390 | tcfg->keepalive_interval, 0); |
| 1391 | } |
| 1392 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 1393 | struct mgcp_config *mgcp_config_alloc(void) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1394 | { |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 1395 | struct mgcp_config *cfg; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1396 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 1397 | cfg = talloc_zero(NULL, struct mgcp_config); |
| 1398 | if (!cfg) { |
| 1399 | LOGP(DMGCP, LOGL_FATAL, "Failed to allocate config.\n"); |
| 1400 | return NULL; |
| 1401 | } |
| 1402 | |
| 1403 | cfg->source_port = 2427; |
| 1404 | cfg->source_addr = talloc_strdup(cfg, "0.0.0.0"); |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 1405 | |
Holger Hans Peter Freyther | b98ba72 | 2010-09-19 04:21:39 +0800 | [diff] [blame] | 1406 | cfg->transcoder_remote_base = 4000; |
Holger Hans Peter Freyther | 15e7389 | 2010-08-05 07:10:56 +0800 | [diff] [blame] | 1407 | |
| 1408 | cfg->bts_ports.base_port = RTP_PORT_DEFAULT; |
| 1409 | cfg->net_ports.base_port = RTP_PORT_NET_DEFAULT; |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 1410 | |
Jacob Erlbeck | a0d64ce | 2014-03-13 14:24:52 +0100 | [diff] [blame] | 1411 | cfg->rtp_processing_cb = &mgcp_rtp_processing_default; |
| 1412 | cfg->setup_rtp_processing_cb = &mgcp_setup_rtp_processing_default; |
| 1413 | |
Jacob Erlbeck | 168ca00 | 2014-03-17 12:40:07 +0100 | [diff] [blame] | 1414 | cfg->get_net_downlink_format_cb = &mgcp_get_net_downlink_format_default; |
| 1415 | |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 1416 | /* default trunk handling */ |
| 1417 | cfg->trunk.cfg = cfg; |
| 1418 | cfg->trunk.trunk_nr = 0; |
| 1419 | cfg->trunk.trunk_type = MGCP_TRUNK_VIRTUAL; |
| 1420 | cfg->trunk.audio_name = talloc_strdup(cfg, "AMR/8000"); |
| 1421 | cfg->trunk.audio_payload = 126; |
Jacob Erlbeck | 0a1bc56 | 2013-12-10 13:09:37 +0100 | [diff] [blame] | 1422 | cfg->trunk.audio_send_ptime = 1; |
Holger Hans Peter Freyther | 619b014 | 2014-11-19 16:04:45 +0100 | [diff] [blame] | 1423 | cfg->trunk.audio_send_name = 1; |
Holger Hans Peter Freyther | a8090d5 | 2012-05-11 13:00:45 +0200 | [diff] [blame] | 1424 | cfg->trunk.omit_rtcp = 0; |
Jacob Erlbeck | 075a9eb | 2013-12-19 18:53:07 +0100 | [diff] [blame] | 1425 | mgcp_trunk_set_keepalive(&cfg->trunk, MGCP_KEEPALIVE_ONCE); |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 1426 | |
Holger Hans Peter Freyther | 0e939fe | 2011-02-28 12:11:02 +0100 | [diff] [blame] | 1427 | INIT_LLIST_HEAD(&cfg->trunks); |
| 1428 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 1429 | return cfg; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1430 | } |
| 1431 | |
Holger Hans Peter Freyther | 0e939fe | 2011-02-28 12:11:02 +0100 | [diff] [blame] | 1432 | struct mgcp_trunk_config *mgcp_trunk_alloc(struct mgcp_config *cfg, int nr) |
| 1433 | { |
| 1434 | struct mgcp_trunk_config *trunk; |
| 1435 | |
| 1436 | trunk = talloc_zero(cfg, struct mgcp_trunk_config); |
| 1437 | if (!trunk) { |
| 1438 | LOGP(DMGCP, LOGL_ERROR, "Failed to allocate.\n"); |
| 1439 | return NULL; |
| 1440 | } |
| 1441 | |
| 1442 | trunk->cfg = cfg; |
| 1443 | trunk->trunk_type = MGCP_TRUNK_E1; |
| 1444 | trunk->trunk_nr = nr; |
| 1445 | trunk->audio_name = talloc_strdup(cfg, "AMR/8000"); |
| 1446 | trunk->audio_payload = 126; |
Jacob Erlbeck | 0a1bc56 | 2013-12-10 13:09:37 +0100 | [diff] [blame] | 1447 | trunk->audio_send_ptime = 1; |
Holger Hans Peter Freyther | 619b014 | 2014-11-19 16:04:45 +0100 | [diff] [blame] | 1448 | trunk->audio_send_name = 1; |
Holger Hans Peter Freyther | 0e939fe | 2011-02-28 12:11:02 +0100 | [diff] [blame] | 1449 | trunk->number_endpoints = 33; |
Holger Hans Peter Freyther | a8090d5 | 2012-05-11 13:00:45 +0200 | [diff] [blame] | 1450 | trunk->omit_rtcp = 0; |
Jacob Erlbeck | 075a9eb | 2013-12-19 18:53:07 +0100 | [diff] [blame] | 1451 | mgcp_trunk_set_keepalive(trunk, MGCP_KEEPALIVE_ONCE); |
Holger Hans Peter Freyther | 0e939fe | 2011-02-28 12:11:02 +0100 | [diff] [blame] | 1452 | llist_add_tail(&trunk->entry, &cfg->trunks); |
| 1453 | return trunk; |
| 1454 | } |
| 1455 | |
| 1456 | struct mgcp_trunk_config *mgcp_trunk_num(struct mgcp_config *cfg, int index) |
| 1457 | { |
| 1458 | struct mgcp_trunk_config *trunk; |
| 1459 | |
| 1460 | llist_for_each_entry(trunk, &cfg->trunks, entry) |
| 1461 | if (trunk->trunk_nr == index) |
| 1462 | return trunk; |
| 1463 | |
| 1464 | return NULL; |
| 1465 | } |
| 1466 | |
Holger Hans Peter Freyther | fa80d07 | 2014-09-01 10:40:19 +0200 | [diff] [blame] | 1467 | static void mgcp_rtp_codec_reset(struct mgcp_rtp_codec *codec) |
| 1468 | { |
| 1469 | codec->payload_type = -1; |
| 1470 | talloc_free(codec->subtype_name); |
| 1471 | codec->subtype_name = NULL; |
| 1472 | talloc_free(codec->audio_name); |
| 1473 | codec->audio_name = NULL; |
| 1474 | codec->frame_duration_num = DEFAULT_RTP_AUDIO_FRAME_DUR_NUM; |
| 1475 | codec->frame_duration_den = DEFAULT_RTP_AUDIO_FRAME_DUR_DEN; |
| 1476 | codec->rate = DEFAULT_RTP_AUDIO_DEFAULT_RATE; |
| 1477 | codec->channels = DEFAULT_RTP_AUDIO_DEFAULT_CHANNELS; |
| 1478 | } |
| 1479 | |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 1480 | static void mgcp_rtp_end_reset(struct mgcp_rtp_end *end) |
| 1481 | { |
Holger Hans Peter Freyther | e97155a | 2010-11-02 19:06:13 +0100 | [diff] [blame] | 1482 | if (end->local_alloc == PORT_ALLOC_DYNAMIC) { |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 1483 | mgcp_free_rtp_port(end); |
Holger Hans Peter Freyther | e97155a | 2010-11-02 19:06:13 +0100 | [diff] [blame] | 1484 | end->local_port = 0; |
| 1485 | } |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 1486 | |
Holger Hans Peter Freyther | c492127 | 2010-08-05 03:37:22 +0800 | [diff] [blame] | 1487 | end->packets = 0; |
Holger Hans Peter Freyther | 952f752 | 2012-09-12 11:38:37 +0200 | [diff] [blame] | 1488 | end->octets = 0; |
Jacob Erlbeck | 0970bab | 2013-12-19 12:13:32 +0100 | [diff] [blame] | 1489 | end->dropped_packets = 0; |
Holger Hans Peter Freyther | c492127 | 2010-08-05 03:37:22 +0800 | [diff] [blame] | 1490 | memset(&end->addr, 0, sizeof(end->addr)); |
Holger Hans Peter Freyther | e97155a | 2010-11-02 19:06:13 +0100 | [diff] [blame] | 1491 | end->rtp_port = end->rtcp_port = 0; |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 1492 | end->local_alloc = -1; |
Holger Hans Peter Freyther | 5ea1bc7 | 2012-09-03 00:07:39 +0200 | [diff] [blame] | 1493 | talloc_free(end->fmtp_extra); |
| 1494 | end->fmtp_extra = NULL; |
Jacob Erlbeck | a0d64ce | 2014-03-13 14:24:52 +0100 | [diff] [blame] | 1495 | talloc_free(end->rtp_process_data); |
| 1496 | end->rtp_process_data = NULL; |
Jacob Erlbeck | 72c3090 | 2013-11-25 15:23:35 +0100 | [diff] [blame] | 1497 | |
| 1498 | /* Set default values */ |
Jacob Erlbeck | f6ec0e9 | 2013-12-04 10:30:11 +0100 | [diff] [blame] | 1499 | end->frames_per_packet = 0; /* unknown */ |
| 1500 | end->packet_duration_ms = DEFAULT_RTP_AUDIO_PACKET_DURATION_MS; |
Jacob Erlbeck | 8857c90 | 2014-01-16 16:50:39 +0100 | [diff] [blame] | 1501 | end->output_enabled = 0; |
Holger Hans Peter Freyther | fa80d07 | 2014-09-01 10:40:19 +0200 | [diff] [blame] | 1502 | |
| 1503 | mgcp_rtp_codec_reset(&end->codec); |
Holger Hans Peter Freyther | e46bc27 | 2014-09-01 10:50:22 +0200 | [diff] [blame] | 1504 | mgcp_rtp_codec_reset(&end->alt_codec); |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 1505 | } |
| 1506 | |
Holger Hans Peter Freyther | c492127 | 2010-08-05 03:37:22 +0800 | [diff] [blame] | 1507 | static void mgcp_rtp_end_init(struct mgcp_rtp_end *end) |
| 1508 | { |
| 1509 | mgcp_rtp_end_reset(end); |
| 1510 | end->rtp.fd = -1; |
| 1511 | end->rtcp.fd = -1; |
| 1512 | } |
| 1513 | |
Holger Hans Peter Freyther | 1f0c5b4 | 2011-02-28 14:37:03 +0100 | [diff] [blame] | 1514 | int mgcp_endpoints_allocate(struct mgcp_trunk_config *tcfg) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1515 | { |
| 1516 | int i; |
| 1517 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 1518 | /* Initialize all endpoints */ |
Holger Hans Peter Freyther | 1f0c5b4 | 2011-02-28 14:37:03 +0100 | [diff] [blame] | 1519 | tcfg->endpoints = _talloc_zero_array(tcfg->cfg, |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 1520 | sizeof(struct mgcp_endpoint), |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 1521 | tcfg->number_endpoints, "endpoints"); |
| 1522 | if (!tcfg->endpoints) |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 1523 | return -1; |
| 1524 | |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 1525 | for (i = 0; i < tcfg->number_endpoints; ++i) { |
| 1526 | tcfg->endpoints[i].ci = CI_UNUSED; |
Holger Hans Peter Freyther | 1f0c5b4 | 2011-02-28 14:37:03 +0100 | [diff] [blame] | 1527 | tcfg->endpoints[i].cfg = tcfg->cfg; |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 1528 | tcfg->endpoints[i].tcfg = tcfg; |
| 1529 | mgcp_rtp_end_init(&tcfg->endpoints[i].net_end); |
| 1530 | mgcp_rtp_end_init(&tcfg->endpoints[i].bts_end); |
| 1531 | mgcp_rtp_end_init(&tcfg->endpoints[i].trans_net); |
| 1532 | mgcp_rtp_end_init(&tcfg->endpoints[i].trans_bts); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1533 | } |
| 1534 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 1535 | return 0; |
| 1536 | } |
Holger Hans Peter Freyther | 154b955 | 2010-02-26 13:27:51 +0100 | [diff] [blame] | 1537 | |
Holger Hans Peter Freyther | cb6ad70 | 2014-07-22 15:00:52 +0200 | [diff] [blame] | 1538 | void mgcp_release_endp(struct mgcp_endpoint *endp) |
Holger Hans Peter Freyther | 154b955 | 2010-02-26 13:27:51 +0100 | [diff] [blame] | 1539 | { |
Holger Hans Peter Freyther | cb6ad70 | 2014-07-22 15:00:52 +0200 | [diff] [blame] | 1540 | LOGP(DMGCP, LOGL_DEBUG, "Releasing endpoint on: 0x%x\n", ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | 89976e8 | 2010-08-03 15:01:43 +0000 | [diff] [blame] | 1541 | endp->ci = CI_UNUSED; |
Holger Hans Peter Freyther | 39a97e2 | 2010-08-06 18:03:11 +0800 | [diff] [blame] | 1542 | endp->allocated = 0; |
Holger Hans Peter Freyther | 154b955 | 2010-02-26 13:27:51 +0100 | [diff] [blame] | 1543 | |
Holger Hans Peter Freyther | 01d315f | 2012-12-07 11:52:16 +0100 | [diff] [blame] | 1544 | talloc_free(endp->callid); |
| 1545 | endp->callid = NULL; |
Holger Hans Peter Freyther | 154b955 | 2010-02-26 13:27:51 +0100 | [diff] [blame] | 1546 | |
Jacob Erlbeck | 2c2ca4d | 2013-12-09 14:32:03 +0100 | [diff] [blame] | 1547 | talloc_free(endp->local_options.string); |
| 1548 | endp->local_options.string = NULL; |
Jacob Erlbeck | 452c183 | 2014-05-09 19:42:17 +0200 | [diff] [blame] | 1549 | talloc_free(endp->local_options.codec); |
| 1550 | endp->local_options.codec = NULL; |
Holger Hans Peter Freyther | 154b955 | 2010-02-26 13:27:51 +0100 | [diff] [blame] | 1551 | |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 1552 | mgcp_rtp_end_reset(&endp->bts_end); |
| 1553 | mgcp_rtp_end_reset(&endp->net_end); |
Holger Hans Peter Freyther | 2126233 | 2010-11-01 20:53:31 +0100 | [diff] [blame] | 1554 | mgcp_rtp_end_reset(&endp->trans_net); |
Holger Hans Peter Freyther | bd7b3c5 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 1555 | mgcp_rtp_end_reset(&endp->trans_bts); |
Pablo Neira Ayuso | 46bd424 | 2013-07-08 05:09:46 +0200 | [diff] [blame] | 1556 | endp->type = MGCP_RTP_DEFAULT; |
Holger Hans Peter Freyther | 380b871 | 2010-07-29 02:38:39 +0800 | [diff] [blame] | 1557 | |
Holger Hans Peter Freyther | 3186892 | 2010-08-03 11:59:04 +0000 | [diff] [blame] | 1558 | memset(&endp->net_state, 0, sizeof(endp->net_state)); |
| 1559 | memset(&endp->bts_state, 0, sizeof(endp->bts_state)); |
Holger Hans Peter Freyther | c597a4e | 2010-08-03 02:57:02 +0800 | [diff] [blame] | 1560 | |
| 1561 | endp->conn_mode = endp->orig_mode = MGCP_CONN_NONE; |
Holger Hans Peter Freyther | 260d6ed | 2010-08-06 01:12:21 +0800 | [diff] [blame] | 1562 | |
Pablo Neira Ayuso | b769f3c | 2014-08-27 17:02:52 +0200 | [diff] [blame] | 1563 | if (endp->osmux.state == OSMUX_STATE_ENABLED) |
| 1564 | osmux_disable_endpoint(endp); |
| 1565 | |
Holger Hans Peter Freyther | 260d6ed | 2010-08-06 01:12:21 +0800 | [diff] [blame] | 1566 | memset(&endp->taps, 0, sizeof(endp->taps)); |
Holger Hans Peter Freyther | 154b955 | 2010-02-26 13:27:51 +0100 | [diff] [blame] | 1567 | } |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1568 | |
Holger Hans Peter Freyther | cb6ad70 | 2014-07-22 15:00:52 +0200 | [diff] [blame] | 1569 | void mgcp_initialize_endp(struct mgcp_endpoint *endp) |
| 1570 | { |
| 1571 | return mgcp_release_endp(endp); |
| 1572 | } |
| 1573 | |
Holger Hans Peter Freyther | 557b1ab | 2010-09-19 04:39:55 +0800 | [diff] [blame] | 1574 | static int send_trans(struct mgcp_config *cfg, const char *buf, int len) |
| 1575 | { |
| 1576 | struct sockaddr_in addr; |
| 1577 | |
| 1578 | memset(&addr, 0, sizeof(addr)); |
| 1579 | addr.sin_family = AF_INET; |
| 1580 | addr.sin_addr = cfg->transcoder_in; |
| 1581 | addr.sin_port = htons(2427); |
| 1582 | return sendto(cfg->gw_fd.bfd.fd, buf, len, 0, |
| 1583 | (struct sockaddr *) &addr, sizeof(addr)); |
| 1584 | } |
| 1585 | |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1586 | static void send_msg(struct mgcp_endpoint *endp, int endpoint, int port, |
| 1587 | const char *msg, const char *mode) |
| 1588 | { |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1589 | char buf[2096]; |
| 1590 | int len; |
Jacob Erlbeck | 997e1e8 | 2014-03-14 18:01:20 +0100 | [diff] [blame] | 1591 | int nchars; |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1592 | |
| 1593 | /* hardcoded to AMR right now, we do not know the real type at this point */ |
| 1594 | len = snprintf(buf, sizeof(buf), |
| 1595 | "%s 42 %x@mgw MGCP 1.0\r\n" |
| 1596 | "C: 4256\r\n" |
| 1597 | "M: %s\r\n" |
Jacob Erlbeck | 997e1e8 | 2014-03-14 18:01:20 +0100 | [diff] [blame] | 1598 | "\r\n", |
| 1599 | msg, endpoint, mode); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1600 | |
| 1601 | if (len < 0) |
| 1602 | return; |
| 1603 | |
Jacob Erlbeck | 997e1e8 | 2014-03-14 18:01:20 +0100 | [diff] [blame] | 1604 | nchars = write_response_sdp(endp, buf + len, sizeof(buf) + len - 1, |
| 1605 | endp->cfg->source_addr); |
| 1606 | if (nchars < 0) |
| 1607 | return; |
| 1608 | |
| 1609 | len += nchars; |
| 1610 | |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1611 | buf[sizeof(buf) - 1] = '\0'; |
| 1612 | |
Holger Hans Peter Freyther | 557b1ab | 2010-09-19 04:39:55 +0800 | [diff] [blame] | 1613 | send_trans(endp->cfg, buf, len); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1614 | } |
| 1615 | |
| 1616 | static void send_dlcx(struct mgcp_endpoint *endp, int endpoint) |
| 1617 | { |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1618 | char buf[2096]; |
| 1619 | int len; |
| 1620 | |
| 1621 | len = snprintf(buf, sizeof(buf), |
| 1622 | "DLCX 43 %x@mgw MGCP 1.0\r\n" |
| 1623 | "C: 4256\r\n" |
| 1624 | , endpoint); |
| 1625 | |
| 1626 | if (len < 0) |
| 1627 | return; |
| 1628 | |
| 1629 | buf[sizeof(buf) - 1] = '\0'; |
| 1630 | |
Holger Hans Peter Freyther | 557b1ab | 2010-09-19 04:39:55 +0800 | [diff] [blame] | 1631 | send_trans(endp->cfg, buf, len); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1632 | } |
| 1633 | |
Harald Welte | 6a85705 | 2012-01-27 00:41:39 +0100 | [diff] [blame] | 1634 | static int send_agent(struct mgcp_config *cfg, const char *buf, int len) |
| 1635 | { |
| 1636 | return write(cfg->gw_fd.bfd.fd, buf, len); |
| 1637 | } |
| 1638 | |
| 1639 | int mgcp_send_reset_all(struct mgcp_config *cfg) |
| 1640 | { |
| 1641 | static const char mgcp_reset[] = { |
| 1642 | "RSIP 1 *@mgw MGCP 1.0\r\n" |
| 1643 | }; |
| 1644 | |
| 1645 | return send_agent(cfg, mgcp_reset, sizeof mgcp_reset -1); |
| 1646 | } |
| 1647 | |
| 1648 | int mgcp_send_reset_ep(struct mgcp_endpoint *endp, int endpoint) |
| 1649 | { |
| 1650 | char buf[128]; |
| 1651 | int len; |
| 1652 | |
| 1653 | len = snprintf(buf, sizeof(buf), |
| 1654 | "RSIP 39 %x@mgw MGCP 1.0\r\n" |
| 1655 | , endpoint); |
| 1656 | if (len < 0) |
| 1657 | return len; |
| 1658 | |
| 1659 | buf[sizeof(buf) - 1] = '\0'; |
| 1660 | |
| 1661 | return send_agent(endp->cfg, buf, len); |
| 1662 | } |
| 1663 | |
Holger Hans Peter Freyther | 7cce1d3 | 2015-03-26 20:34:12 +0100 | [diff] [blame] | 1664 | static int setup_rtp_processing(struct mgcp_endpoint *endp) |
Jacob Erlbeck | a0d64ce | 2014-03-13 14:24:52 +0100 | [diff] [blame] | 1665 | { |
Holger Hans Peter Freyther | 7cce1d3 | 2015-03-26 20:34:12 +0100 | [diff] [blame] | 1666 | int rc = 0; |
Jacob Erlbeck | a0d64ce | 2014-03-13 14:24:52 +0100 | [diff] [blame] | 1667 | struct mgcp_config *cfg = endp->cfg; |
| 1668 | |
| 1669 | if (endp->type != MGCP_RTP_DEFAULT) |
Holger Hans Peter Freyther | 7cce1d3 | 2015-03-26 20:34:12 +0100 | [diff] [blame] | 1670 | return 0; |
Jacob Erlbeck | a0d64ce | 2014-03-13 14:24:52 +0100 | [diff] [blame] | 1671 | |
| 1672 | if (endp->conn_mode == MGCP_CONN_LOOPBACK) |
Holger Hans Peter Freyther | 7cce1d3 | 2015-03-26 20:34:12 +0100 | [diff] [blame] | 1673 | return 0; |
Jacob Erlbeck | a0d64ce | 2014-03-13 14:24:52 +0100 | [diff] [blame] | 1674 | |
| 1675 | if (endp->conn_mode & MGCP_CONN_SEND_ONLY) |
Holger Hans Peter Freyther | 7cce1d3 | 2015-03-26 20:34:12 +0100 | [diff] [blame] | 1676 | rc |= cfg->setup_rtp_processing_cb(endp, &endp->net_end, &endp->bts_end); |
Jacob Erlbeck | a0d64ce | 2014-03-13 14:24:52 +0100 | [diff] [blame] | 1677 | else |
Holger Hans Peter Freyther | 7cce1d3 | 2015-03-26 20:34:12 +0100 | [diff] [blame] | 1678 | rc |= cfg->setup_rtp_processing_cb(endp, &endp->net_end, NULL); |
Jacob Erlbeck | a0d64ce | 2014-03-13 14:24:52 +0100 | [diff] [blame] | 1679 | |
| 1680 | if (endp->conn_mode & MGCP_CONN_RECV_ONLY) |
Holger Hans Peter Freyther | 7cce1d3 | 2015-03-26 20:34:12 +0100 | [diff] [blame] | 1681 | rc |= cfg->setup_rtp_processing_cb(endp, &endp->bts_end, &endp->net_end); |
Jacob Erlbeck | a0d64ce | 2014-03-13 14:24:52 +0100 | [diff] [blame] | 1682 | else |
Holger Hans Peter Freyther | 7cce1d3 | 2015-03-26 20:34:12 +0100 | [diff] [blame] | 1683 | rc |= cfg->setup_rtp_processing_cb(endp, &endp->bts_end, NULL); |
| 1684 | return rc; |
Jacob Erlbeck | a0d64ce | 2014-03-13 14:24:52 +0100 | [diff] [blame] | 1685 | } |
| 1686 | |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1687 | static void create_transcoder(struct mgcp_endpoint *endp) |
| 1688 | { |
| 1689 | int port; |
| 1690 | int in_endp = ENDPOINT_NUMBER(endp); |
Holger Hans Peter Freyther | bd7b3c5 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 1691 | int out_endp = endp_back_channel(in_endp); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1692 | |
Pablo Neira Ayuso | 46bd424 | 2013-07-08 05:09:46 +0200 | [diff] [blame] | 1693 | if (endp->type != MGCP_RTP_TRANSCODED) |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1694 | return; |
| 1695 | |
Holger Hans Peter Freyther | 8b19dee | 2010-11-01 22:38:25 +0100 | [diff] [blame] | 1696 | send_msg(endp, in_endp, endp->trans_bts.local_port, "CRCX", "sendrecv"); |
| 1697 | send_msg(endp, in_endp, endp->trans_bts.local_port, "MDCX", "sendrecv"); |
Holger Hans Peter Freyther | 2126233 | 2010-11-01 20:53:31 +0100 | [diff] [blame] | 1698 | send_msg(endp, out_endp, endp->trans_net.local_port, "CRCX", "sendrecv"); |
| 1699 | send_msg(endp, out_endp, endp->trans_net.local_port, "MDCX", "sendrecv"); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1700 | |
Holger Hans Peter Freyther | bd7b3c5 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 1701 | port = rtp_calculate_port(in_endp, endp->cfg->transcoder_remote_base); |
| 1702 | endp->trans_bts.rtp_port = htons(port); |
| 1703 | endp->trans_bts.rtcp_port = htons(port + 1); |
| 1704 | |
Holger Hans Peter Freyther | b98ba72 | 2010-09-19 04:21:39 +0800 | [diff] [blame] | 1705 | port = rtp_calculate_port(out_endp, endp->cfg->transcoder_remote_base); |
Holger Hans Peter Freyther | 2126233 | 2010-11-01 20:53:31 +0100 | [diff] [blame] | 1706 | endp->trans_net.rtp_port = htons(port); |
| 1707 | endp->trans_net.rtcp_port = htons(port + 1); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1708 | } |
| 1709 | |
| 1710 | static void delete_transcoder(struct mgcp_endpoint *endp) |
| 1711 | { |
| 1712 | int in_endp = ENDPOINT_NUMBER(endp); |
Holger Hans Peter Freyther | bd7b3c5 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 1713 | int out_endp = endp_back_channel(in_endp); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1714 | |
Pablo Neira Ayuso | 46bd424 | 2013-07-08 05:09:46 +0200 | [diff] [blame] | 1715 | if (endp->type != MGCP_RTP_TRANSCODED) |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1716 | return; |
| 1717 | |
| 1718 | send_dlcx(endp, in_endp); |
| 1719 | send_dlcx(endp, out_endp); |
| 1720 | } |
Holger Hans Peter Freyther | f2eedff | 2010-09-19 04:36:07 +0800 | [diff] [blame] | 1721 | |
| 1722 | int mgcp_reset_transcoder(struct mgcp_config *cfg) |
| 1723 | { |
Holger Hans Peter Freyther | f2eedff | 2010-09-19 04:36:07 +0800 | [diff] [blame] | 1724 | if (!cfg->transcoder_ip) |
Holger Hans Peter Freyther | cf1c877 | 2010-09-24 04:41:28 +0800 | [diff] [blame] | 1725 | return 0; |
Holger Hans Peter Freyther | f2eedff | 2010-09-19 04:36:07 +0800 | [diff] [blame] | 1726 | |
| 1727 | static const char mgcp_reset[] = { |
| 1728 | "RSIP 1 13@mgw MGCP 1.0\r\n" |
| 1729 | }; |
| 1730 | |
Holger Hans Peter Freyther | 557b1ab | 2010-09-19 04:39:55 +0800 | [diff] [blame] | 1731 | return send_trans(cfg, mgcp_reset, sizeof mgcp_reset -1); |
Holger Hans Peter Freyther | f2eedff | 2010-09-19 04:36:07 +0800 | [diff] [blame] | 1732 | } |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 1733 | |
| 1734 | void mgcp_format_stats(struct mgcp_endpoint *endp, char *msg, size_t size) |
| 1735 | { |
Holger Hans Peter Freyther | cb306a6 | 2012-10-24 21:22:47 +0200 | [diff] [blame] | 1736 | uint32_t expected, jitter; |
Holger Hans Peter Freyther | 38e02c5 | 2012-10-22 18:09:35 +0200 | [diff] [blame] | 1737 | int ploss; |
Jacob Erlbeck | 50079a1 | 2013-11-25 12:53:28 +0100 | [diff] [blame] | 1738 | int nchars; |
Holger Hans Peter Freyther | 38e02c5 | 2012-10-22 18:09:35 +0200 | [diff] [blame] | 1739 | mgcp_state_calc_loss(&endp->net_state, &endp->net_end, |
| 1740 | &expected, &ploss); |
Holger Hans Peter Freyther | cb306a6 | 2012-10-24 21:22:47 +0200 | [diff] [blame] | 1741 | jitter = mgcp_state_calc_jitter(&endp->net_state); |
Holger Hans Peter Freyther | 38e02c5 | 2012-10-22 18:09:35 +0200 | [diff] [blame] | 1742 | |
Jacob Erlbeck | 50079a1 | 2013-11-25 12:53:28 +0100 | [diff] [blame] | 1743 | nchars = snprintf(msg, size, |
| 1744 | "\r\nP: PS=%u, OS=%u, PR=%u, OR=%u, PL=%d, JI=%u", |
| 1745 | endp->bts_end.packets, endp->bts_end.octets, |
| 1746 | endp->net_end.packets, endp->net_end.octets, |
| 1747 | ploss, jitter); |
| 1748 | if (nchars < 0 || nchars >= size) |
| 1749 | goto truncate; |
| 1750 | |
| 1751 | msg += nchars; |
| 1752 | size -= nchars; |
| 1753 | |
| 1754 | /* Error Counter */ |
Pablo Neira Ayuso | ee11bc0 | 2014-09-17 12:33:09 +0200 | [diff] [blame] | 1755 | nchars = snprintf(msg, size, |
| 1756 | "\r\nX-Osmo-CP: EC TIS=%u, TOS=%u, TIR=%u, TOR=%u", |
| 1757 | endp->net_state.in_stream.err_ts_counter, |
| 1758 | endp->net_state.out_stream.err_ts_counter, |
| 1759 | endp->bts_state.in_stream.err_ts_counter, |
| 1760 | endp->bts_state.out_stream.err_ts_counter); |
| 1761 | if (nchars < 0 || nchars >= size) |
| 1762 | goto truncate; |
| 1763 | |
| 1764 | msg += nchars; |
| 1765 | size -= nchars; |
| 1766 | |
| 1767 | if (endp->osmux.state == OSMUX_STATE_ENABLED) { |
| 1768 | snprintf(msg, size, |
| 1769 | "\r\nX-Osmux-ST: CR=%u, BR=%u", |
| 1770 | endp->osmux.stats.chunks, |
| 1771 | endp->osmux.stats.octets); |
| 1772 | } |
Jacob Erlbeck | 50079a1 | 2013-11-25 12:53:28 +0100 | [diff] [blame] | 1773 | truncate: |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 1774 | msg[size - 1] = '\0'; |
| 1775 | } |
Holger Hans Peter Freyther | 462b7d7 | 2012-10-24 21:53:40 +0200 | [diff] [blame] | 1776 | |
| 1777 | int mgcp_parse_stats(struct msgb *msg, uint32_t *ps, uint32_t *os, |
| 1778 | uint32_t *pr, uint32_t *_or, int *loss, uint32_t *jitter) |
| 1779 | { |
| 1780 | char *line, *save; |
| 1781 | int rc; |
| 1782 | |
| 1783 | /* initialize with bad values */ |
| 1784 | *ps = *os = *pr = *_or = *jitter = UINT_MAX; |
| 1785 | *loss = INT_MAX; |
| 1786 | |
| 1787 | |
| 1788 | line = strtok_r((char *) msg->l2h, "\r\n", &save); |
| 1789 | if (!line) |
| 1790 | return -1; |
| 1791 | |
| 1792 | /* this can only parse the message that is created above... */ |
Jacob Erlbeck | a01bd60 | 2013-11-29 13:43:43 +0100 | [diff] [blame] | 1793 | for_each_non_empty_line(line, save) { |
Holger Hans Peter Freyther | 462b7d7 | 2012-10-24 21:53:40 +0200 | [diff] [blame] | 1794 | switch (line[0]) { |
| 1795 | case 'P': |
| 1796 | rc = sscanf(line, "P: PS=%u, OS=%u, PR=%u, OR=%u, PL=%d, JI=%u", |
| 1797 | ps, os, pr, _or, loss, jitter); |
| 1798 | return rc == 6 ? 0 : -1; |
| 1799 | } |
| 1800 | } |
| 1801 | |
| 1802 | return -1; |
| 1803 | } |