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> |
| 31 | |
Pablo Neira Ayuso | 136f453 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 32 | #include <osmocom/core/msgb.h> |
| 33 | #include <osmocom/core/talloc.h> |
| 34 | #include <osmocom/core/select.h> |
Holger Hans Peter Freyther | 16b7f5c | 2011-02-28 22:06:47 +0100 | [diff] [blame] | 35 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 36 | #include <openbsc/mgcp.h> |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 37 | #include <openbsc/mgcp_internal.h> |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 38 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 39 | #define for_each_line(line, save) \ |
| 40 | for (line = strtok_r(NULL, "\r\n", &save); line;\ |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 41 | line = strtok_r(NULL, "\r\n", &save)) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 42 | |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 43 | 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] | 44 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 45 | struct mgcp_parse_data { |
| 46 | struct mgcp_config *cfg; |
| 47 | struct mgcp_endpoint *endp; |
| 48 | char *trans; |
| 49 | char *save; |
| 50 | int found; |
| 51 | }; |
| 52 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 53 | struct mgcp_request { |
| 54 | char *name; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 55 | struct msgb *(*handle_request) (struct mgcp_parse_data *data); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 56 | char *debug_name; |
| 57 | }; |
| 58 | |
| 59 | #define MGCP_REQUEST(NAME, REQ, DEBUG_NAME) \ |
| 60 | { .name = NAME, .handle_request = REQ, .debug_name = DEBUG_NAME }, |
| 61 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 62 | static struct msgb *handle_audit_endpoint(struct mgcp_parse_data *data); |
| 63 | static struct msgb *handle_create_con(struct mgcp_parse_data *data); |
| 64 | static struct msgb *handle_delete_con(struct mgcp_parse_data *data); |
| 65 | static struct msgb *handle_modify_con(struct mgcp_parse_data *data); |
| 66 | static struct msgb *handle_rsip(struct mgcp_parse_data *data); |
| 67 | 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] | 68 | |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 69 | static void create_transcoder(struct mgcp_endpoint *endp); |
| 70 | static void delete_transcoder(struct mgcp_endpoint *endp); |
| 71 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 72 | static int mgcp_analyze_header(struct mgcp_parse_data *parse, char *data); |
| 73 | |
Holger Hans Peter Freyther | 4634013 | 2010-08-06 08:26:54 +0800 | [diff] [blame] | 74 | static uint32_t generate_call_id(struct mgcp_config *cfg) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 75 | { |
| 76 | int i; |
| 77 | |
| 78 | /* use the call id */ |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 79 | ++cfg->last_call_id; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 80 | |
| 81 | /* handle wrap around */ |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 82 | if (cfg->last_call_id == CI_UNUSED) |
| 83 | ++cfg->last_call_id; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 84 | |
| 85 | /* callstack can only be of size number_of_endpoints */ |
| 86 | /* 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] | 87 | for (i = 1; i < cfg->trunk.number_endpoints; ++i) |
| 88 | if (cfg->trunk.endpoints[i].ci == cfg->last_call_id) |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 89 | return generate_call_id(cfg); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 90 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 91 | return cfg->last_call_id; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 92 | } |
| 93 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 94 | /* |
| 95 | * array of function pointers for handling various |
| 96 | * messages. In the future this might be binary sorted |
| 97 | * for performance reasons. |
| 98 | */ |
| 99 | static const struct mgcp_request mgcp_requests [] = { |
| 100 | MGCP_REQUEST("AUEP", handle_audit_endpoint, "AuditEndpoint") |
| 101 | MGCP_REQUEST("CRCX", handle_create_con, "CreateConnection") |
| 102 | MGCP_REQUEST("DLCX", handle_delete_con, "DeleteConnection") |
| 103 | MGCP_REQUEST("MDCX", handle_modify_con, "ModifiyConnection") |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 104 | MGCP_REQUEST("RQNT", handle_noti_req, "NotificationRequest") |
Holger Hans Peter Freyther | 9bdcc9c | 2010-03-31 06:39:35 +0200 | [diff] [blame] | 105 | |
| 106 | /* SPEC extension */ |
| 107 | MGCP_REQUEST("RSIP", handle_rsip, "ReSetInProgress") |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 108 | }; |
| 109 | |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 110 | static struct msgb *mgcp_msgb_alloc(void) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 111 | { |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 112 | struct msgb *msg; |
| 113 | msg = msgb_alloc_headroom(4096, 128, "MGCP msg"); |
| 114 | if (!msg) |
| 115 | LOGP(DMGCP, LOGL_ERROR, "Failed to msgb for MGCP data.\n"); |
| 116 | |
| 117 | return msg; |
| 118 | } |
| 119 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 120 | static struct msgb *do_retransmission(const struct mgcp_endpoint *endp) |
| 121 | { |
| 122 | struct msgb *msg = mgcp_msgb_alloc(); |
| 123 | if (!msg) |
| 124 | return NULL; |
| 125 | |
| 126 | msg->l2h = msgb_put(msg, strlen(endp->last_response)); |
| 127 | memcpy(msg->l2h, endp->last_response, msgb_l2len(msg)); |
| 128 | return msg; |
| 129 | } |
| 130 | |
Holger Hans Peter Freyther | a769dcb | 2012-12-07 15:14:27 +0100 | [diff] [blame] | 131 | static struct msgb *create_resp(struct mgcp_endpoint *endp, int code, |
| 132 | const char *txt, const char *msg, |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 133 | const char *trans, const char *param, |
| 134 | const char *sdp) |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 135 | { |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 136 | int len; |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 137 | struct msgb *res; |
| 138 | |
| 139 | res = mgcp_msgb_alloc(); |
| 140 | if (!res) |
| 141 | return NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 142 | |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 143 | len = snprintf((char *) res->data, 2048, "%d %s%s%s\r\n%s", |
| 144 | code, trans, txt, param ? param : "", sdp ? sdp : ""); |
| 145 | if (len < 0) { |
| 146 | LOGP(DMGCP, LOGL_ERROR, "Failed to sprintf MGCP response.\n"); |
| 147 | msgb_free(res); |
| 148 | return NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 149 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 150 | |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 151 | res->l2h = msgb_put(res, len); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 152 | LOGP(DMGCP, LOGL_DEBUG, "Generated response: code: %d for '%s'\n", code, res->l2h); |
| 153 | |
| 154 | /* |
| 155 | * Remember the last transmission per endpoint. |
| 156 | */ |
| 157 | if (endp) { |
| 158 | struct mgcp_trunk_config *tcfg = endp->tcfg; |
| 159 | talloc_free(endp->last_response); |
| 160 | talloc_free(endp->last_trans); |
| 161 | endp->last_trans = talloc_strdup(tcfg->endpoints, trans); |
| 162 | endp->last_response = talloc_strndup(tcfg->endpoints, |
| 163 | (const char *) res->l2h, |
| 164 | msgb_l2len(res)); |
| 165 | } |
| 166 | |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 167 | return res; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 168 | } |
| 169 | |
Holger Hans Peter Freyther | a769dcb | 2012-12-07 15:14:27 +0100 | [diff] [blame] | 170 | static struct msgb *create_ok_resp_with_param(struct mgcp_endpoint *endp, |
| 171 | int code, const char *msg, |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 172 | const char *trans, const char *param) |
| 173 | { |
Holger Hans Peter Freyther | a769dcb | 2012-12-07 15:14:27 +0100 | [diff] [blame] | 174 | return create_resp(endp, code, " OK", msg, trans, param, NULL); |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 175 | } |
| 176 | |
Holger Hans Peter Freyther | a769dcb | 2012-12-07 15:14:27 +0100 | [diff] [blame] | 177 | static struct msgb *create_ok_response(struct mgcp_endpoint *endp, |
| 178 | int code, const char *msg, const char *trans) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 179 | { |
Holger Hans Peter Freyther | a769dcb | 2012-12-07 15:14:27 +0100 | [diff] [blame] | 180 | 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] | 181 | } |
| 182 | |
Holger Hans Peter Freyther | a769dcb | 2012-12-07 15:14:27 +0100 | [diff] [blame] | 183 | static struct msgb *create_err_response(struct mgcp_endpoint *endp, |
| 184 | int code, const char *msg, const char *trans) |
Holger Hans Peter Freyther | 6adac17 | 2011-01-06 16:19:55 +0100 | [diff] [blame] | 185 | { |
Holger Hans Peter Freyther | a769dcb | 2012-12-07 15:14:27 +0100 | [diff] [blame] | 186 | return create_resp(endp, code, " FAIL", msg, trans, NULL, NULL); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 187 | } |
| 188 | |
Holger Hans Peter Freyther | 8d188ed | 2010-02-21 01:44:08 +0100 | [diff] [blame] | 189 | static struct msgb *create_response_with_sdp(struct mgcp_endpoint *endp, |
| 190 | const char *msg, const char *trans_id) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 191 | { |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 192 | const char *addr = endp->cfg->local_ip; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 193 | char sdp_record[4096]; |
| 194 | |
| 195 | if (!addr) |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 196 | addr = endp->cfg->source_addr; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 197 | |
| 198 | snprintf(sdp_record, sizeof(sdp_record) - 1, |
Holger Hans Peter Freyther | 4634013 | 2010-08-06 08:26:54 +0800 | [diff] [blame] | 199 | "I: %u\n\n" |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 200 | "v=0\r\n" |
Holger Hans Peter Freyther | c7e49d3 | 2011-07-20 20:43:15 +0200 | [diff] [blame] | 201 | "o=- %u 23 IN IP4 %s\r\n" |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 202 | "c=IN IP4 %s\r\n" |
Holger Hans Peter Freyther | c7e49d3 | 2011-07-20 20:43:15 +0200 | [diff] [blame] | 203 | "t=0 0\r\n" |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 204 | "m=audio %d RTP/AVP %d\r\n" |
| 205 | "a=rtpmap:%d %s\r\n", |
Holger Hans Peter Freyther | c7e49d3 | 2011-07-20 20:43:15 +0200 | [diff] [blame] | 206 | endp->ci, endp->ci, addr, addr, |
| 207 | endp->net_end.local_port, endp->bts_end.payload_type, |
| 208 | endp->bts_end.payload_type, endp->tcfg->audio_name); |
Holger Hans Peter Freyther | a769dcb | 2012-12-07 15:14:27 +0100 | [diff] [blame] | 209 | 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] | 210 | } |
| 211 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 212 | /* |
| 213 | * handle incoming messages: |
| 214 | * - this can be a command (four letters, space, transaction id) |
| 215 | * - or a response (three numbers, space, transaction id) |
| 216 | */ |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 217 | 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] | 218 | { |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 219 | struct mgcp_parse_data pdata; |
| 220 | int i, code, handled = 0; |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 221 | struct msgb *resp = NULL; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 222 | char *data; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 223 | |
Holger Hans Peter Freyther | f36a11a | 2010-03-31 13:26:46 +0200 | [diff] [blame] | 224 | if (msgb_l2len(msg) < 4) { |
Holger Hans Peter Freyther | 0d904e0 | 2012-12-07 16:46:19 +0100 | [diff] [blame] | 225 | 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] | 226 | return NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 227 | } |
| 228 | |
| 229 | /* attempt to treat it as a response */ |
Holger Hans Peter Freyther | f36a11a | 2010-03-31 13:26:46 +0200 | [diff] [blame] | 230 | 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] | 231 | LOGP(DMGCP, LOGL_DEBUG, "Response: Code: %d\n", code); |
Holger Hans Peter Freyther | 29de346 | 2012-12-07 16:07:46 +0100 | [diff] [blame] | 232 | return NULL; |
| 233 | } |
| 234 | |
| 235 | msg->l3h = &msg->l2h[4]; |
| 236 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 237 | |
| 238 | /* |
| 239 | * Check for a duplicate message and respond. |
| 240 | * FIXME: Verify that the msg->l3h is NULL terminated. |
| 241 | */ |
| 242 | memset(&pdata, 0, sizeof(pdata)); |
| 243 | pdata.cfg = cfg; |
| 244 | data = strtok_r((char *) msg->l3h, "\r\n", &pdata.save); |
| 245 | pdata.found = mgcp_analyze_header(&pdata, data); |
| 246 | if (pdata.endp && pdata.trans |
| 247 | && pdata.endp->last_trans |
| 248 | && strcmp(pdata.endp->last_trans, pdata.trans) == 0) { |
| 249 | return do_retransmission(pdata.endp); |
| 250 | } |
| 251 | |
Holger Hans Peter Freyther | 29de346 | 2012-12-07 16:07:46 +0100 | [diff] [blame] | 252 | for (i = 0; i < ARRAY_SIZE(mgcp_requests); ++i) { |
| 253 | if (strncmp(mgcp_requests[i].name, (const char *) &msg->l2h[0], 4) == 0) { |
| 254 | handled = 1; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 255 | resp = mgcp_requests[i].handle_request(&pdata); |
Holger Hans Peter Freyther | 29de346 | 2012-12-07 16:07:46 +0100 | [diff] [blame] | 256 | break; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 257 | } |
| 258 | } |
| 259 | |
Holger Hans Peter Freyther | 29de346 | 2012-12-07 16:07:46 +0100 | [diff] [blame] | 260 | if (!handled) |
| 261 | LOGP(DMGCP, LOGL_NOTICE, "MSG with type: '%.4s' not handled\n", &msg->l2h[0]); |
| 262 | |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 263 | return resp; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 264 | } |
| 265 | |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 266 | /** |
| 267 | * We have a null terminated string with the endpoint name here. We only |
| 268 | * support two kinds. Simple ones as seen on the BSC level and the ones |
| 269 | * seen on the trunk side. |
| 270 | */ |
| 271 | static struct mgcp_endpoint *find_e1_endpoint(struct mgcp_config *cfg, |
| 272 | const char *mgcp) |
| 273 | { |
| 274 | char *rest = NULL; |
Holger Hans Peter Freyther | 74e6111 | 2011-02-28 14:13:47 +0100 | [diff] [blame] | 275 | struct mgcp_trunk_config *tcfg; |
| 276 | int trunk, endp; |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 277 | |
| 278 | trunk = strtoul(mgcp + 6, &rest, 10); |
Holger Hans Peter Freyther | f43f2fc | 2011-01-07 11:30:21 +0100 | [diff] [blame] | 279 | if (rest == NULL || rest[0] != '/' || trunk < 1) { |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 280 | LOGP(DMGCP, LOGL_ERROR, "Wrong trunk name '%s'\n", mgcp); |
| 281 | return NULL; |
| 282 | } |
| 283 | |
| 284 | endp = strtoul(rest + 1, &rest, 10); |
| 285 | if (rest == NULL || rest[0] != '@') { |
Holger Hans Peter Freyther | f43f2fc | 2011-01-07 11:30:21 +0100 | [diff] [blame] | 286 | LOGP(DMGCP, LOGL_ERROR, "Wrong endpoint name '%s'\n", mgcp); |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 287 | return NULL; |
| 288 | } |
| 289 | |
| 290 | /* signalling is on timeslot 1 */ |
| 291 | if (endp == 1) |
| 292 | return NULL; |
| 293 | |
Holger Hans Peter Freyther | 74e6111 | 2011-02-28 14:13:47 +0100 | [diff] [blame] | 294 | tcfg = mgcp_trunk_num(cfg, trunk); |
| 295 | if (!tcfg) { |
| 296 | LOGP(DMGCP, LOGL_ERROR, "The trunk %d is not declared.\n", trunk); |
| 297 | return NULL; |
| 298 | } |
| 299 | |
| 300 | if (!tcfg->endpoints) { |
| 301 | LOGP(DMGCP, LOGL_ERROR, "Endpoints of trunk %d not allocated.\n", trunk); |
| 302 | return NULL; |
| 303 | } |
| 304 | |
| 305 | if (endp < 1 || endp >= tcfg->number_endpoints) { |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 306 | 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] | 307 | return NULL; |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 308 | } |
| 309 | |
Holger Hans Peter Freyther | 74e6111 | 2011-02-28 14:13:47 +0100 | [diff] [blame] | 310 | return &tcfg->endpoints[endp]; |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 311 | } |
| 312 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 313 | 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] | 314 | { |
| 315 | char *endptr = NULL; |
| 316 | unsigned int gw = INT_MAX; |
| 317 | |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 318 | if (strncmp(mgcp, "ds/e1", 5) == 0) { |
| 319 | return find_e1_endpoint(cfg, mgcp); |
| 320 | } else { |
| 321 | gw = strtoul(mgcp, &endptr, 16); |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 322 | if (gw > 0 && gw < cfg->trunk.number_endpoints && strcmp(endptr, "@mgw") == 0) |
| 323 | return &cfg->trunk.endpoints[gw]; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 324 | } |
| 325 | |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 326 | LOGP(DMGCP, LOGL_ERROR, "Not able to find endpoint: '%s'\n", mgcp); |
| 327 | return NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 328 | } |
| 329 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 330 | /** |
| 331 | * @returns 0 when the status line was complete and transaction_id and |
| 332 | * endp out parameters are set. |
| 333 | */ |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 334 | 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] | 335 | { |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 336 | int i = 0; |
| 337 | char *elem, *save; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 338 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 339 | pdata->trans = "000000"; |
Holger Hans Peter Freyther | a820c5f | 2010-02-26 13:32:55 +0100 | [diff] [blame] | 340 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 341 | for (elem = strtok_r(data, " ", &save); elem; |
| 342 | elem = strtok_r(NULL, " ", &save)) { |
| 343 | switch (i) { |
| 344 | case 0: |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 345 | pdata->trans = elem; |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 346 | break; |
| 347 | case 1: |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 348 | pdata->endp = find_endpoint(pdata->cfg, elem); |
| 349 | if (!pdata->endp) { |
| 350 | LOGP(DMGCP, LOGL_ERROR, |
| 351 | "Unable to find Endpoint `%s'\n", elem); |
| 352 | return -1; |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 353 | } |
| 354 | break; |
| 355 | case 2: |
| 356 | if (strcmp("MGCP", elem)) { |
| 357 | LOGP(DMGCP, LOGL_ERROR, |
| 358 | "MGCP header parsing error\n"); |
| 359 | return -1; |
| 360 | } |
| 361 | break; |
| 362 | case 3: |
| 363 | if (strcmp("1.0", elem)) { |
| 364 | LOGP(DMGCP, LOGL_ERROR, "MGCP version `%s' " |
| 365 | "not supported\n", elem); |
| 366 | return -1; |
| 367 | } |
| 368 | break; |
| 369 | } |
| 370 | i++; |
| 371 | } |
| 372 | |
| 373 | if (i != 4) { |
| 374 | LOGP(DMGCP, LOGL_ERROR, "MGCP status line too short.\n"); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 375 | pdata->trans = "000000"; |
| 376 | pdata->endp = NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 377 | return -1; |
| 378 | } |
| 379 | |
Holger Hans Peter Freyther | f2f1591 | 2010-04-01 03:27:04 +0200 | [diff] [blame] | 380 | return 0; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 381 | } |
| 382 | |
| 383 | static int verify_call_id(const struct mgcp_endpoint *endp, |
| 384 | const char *callid) |
| 385 | { |
| 386 | if (strcmp(endp->callid, callid) != 0) { |
Holger Hans Peter Freyther | 2ada71d | 2010-02-03 09:13:10 +0100 | [diff] [blame] | 387 | 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] | 388 | ENDPOINT_NUMBER(endp), endp->callid, callid); |
| 389 | return -1; |
| 390 | } |
| 391 | |
| 392 | return 0; |
| 393 | } |
| 394 | |
| 395 | static int verify_ci(const struct mgcp_endpoint *endp, |
Holger Hans Peter Freyther | 4634013 | 2010-08-06 08:26:54 +0800 | [diff] [blame] | 396 | const char *_ci) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 397 | { |
Holger Hans Peter Freyther | 4634013 | 2010-08-06 08:26:54 +0800 | [diff] [blame] | 398 | uint32_t ci = strtoul(_ci, NULL, 10); |
| 399 | |
| 400 | if (ci != endp->ci) { |
| 401 | LOGP(DMGCP, LOGL_ERROR, "ConnectionIdentifiers do not match on 0x%x. %u != %s\n", |
| 402 | ENDPOINT_NUMBER(endp), endp->ci, _ci); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 403 | return -1; |
| 404 | } |
| 405 | |
| 406 | return 0; |
| 407 | } |
| 408 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 409 | 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] | 410 | { |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 411 | if (p->found != 0) |
| 412 | return create_err_response(NULL, 500, "AUEP", p->trans); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 413 | else |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 414 | return create_ok_response(p->endp, 200, "AUEP", p->trans); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 415 | } |
| 416 | |
Holger Hans Peter Freyther | adb6e1c | 2010-09-18 06:44:24 +0800 | [diff] [blame] | 417 | static int parse_conn_mode(const char *msg, int *conn_mode) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 418 | { |
| 419 | int ret = 0; |
| 420 | if (strcmp(msg, "recvonly") == 0) |
| 421 | *conn_mode = MGCP_CONN_RECV_ONLY; |
| 422 | else if (strcmp(msg, "sendrecv") == 0) |
| 423 | *conn_mode = MGCP_CONN_RECV_SEND; |
Holger Hans Peter Freyther | e02860a | 2010-09-18 20:21:44 +0800 | [diff] [blame] | 424 | else if (strcmp(msg, "sendonly") == 0) |
| 425 | *conn_mode = MGCP_CONN_SEND_ONLY; |
Holger Hans Peter Freyther | 98a3877 | 2010-08-03 02:27:21 +0800 | [diff] [blame] | 426 | else if (strcmp(msg, "loopback") == 0) |
| 427 | *conn_mode = MGCP_CONN_LOOPBACK; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 428 | else { |
Holger Hans Peter Freyther | 2ada71d | 2010-02-03 09:13:10 +0100 | [diff] [blame] | 429 | LOGP(DMGCP, LOGL_ERROR, "Unknown connection mode: '%s'\n", msg); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 430 | ret = -1; |
| 431 | } |
| 432 | |
| 433 | return ret; |
| 434 | } |
| 435 | |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 436 | 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] | 437 | struct mgcp_port_range *range, |
| 438 | int (*alloc)(struct mgcp_endpoint *endp, int port)) |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 439 | { |
| 440 | int i; |
| 441 | |
| 442 | if (range->mode == PORT_ALLOC_STATIC) { |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 443 | end->local_alloc = PORT_ALLOC_STATIC; |
| 444 | return 0; |
| 445 | } |
| 446 | |
| 447 | /* attempt to find a port */ |
| 448 | for (i = 0; i < 200; ++i) { |
| 449 | int rc; |
| 450 | |
| 451 | if (range->last_port >= range->range_end) |
| 452 | range->last_port = range->range_start; |
| 453 | |
Holger Hans Peter Freyther | 218f856 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 454 | rc = alloc(endp, range->last_port); |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 455 | |
| 456 | range->last_port += 2; |
| 457 | if (rc == 0) { |
| 458 | end->local_alloc = PORT_ALLOC_DYNAMIC; |
| 459 | return 0; |
| 460 | } |
| 461 | |
| 462 | } |
| 463 | |
Holger Hans Peter Freyther | 218f856 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 464 | LOGP(DMGCP, LOGL_ERROR, "Allocating a RTP/RTCP port failed 200 times 0x%x.\n", |
| 465 | ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 466 | return -1; |
| 467 | } |
| 468 | |
| 469 | static int allocate_ports(struct mgcp_endpoint *endp) |
| 470 | { |
Holger Hans Peter Freyther | 218f856 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 471 | if (allocate_port(endp, &endp->net_end, &endp->cfg->net_ports, |
| 472 | mgcp_bind_net_rtp_port) != 0) |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 473 | return -1; |
| 474 | |
Holger Hans Peter Freyther | 218f856 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 475 | if (allocate_port(endp, &endp->bts_end, &endp->cfg->bts_ports, |
| 476 | mgcp_bind_bts_rtp_port) != 0) { |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 477 | mgcp_rtp_end_reset(&endp->net_end); |
| 478 | return -1; |
| 479 | } |
| 480 | |
Holger Hans Peter Freyther | 6990687 | 2011-02-28 14:51:48 +0100 | [diff] [blame] | 481 | 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] | 482 | if (allocate_port(endp, &endp->trans_net, |
Holger Hans Peter Freyther | b54048f | 2010-11-01 19:57:50 +0100 | [diff] [blame] | 483 | &endp->cfg->transcoder_ports, |
Holger Hans Peter Freyther | bd7b3c5 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 484 | mgcp_bind_trans_net_rtp_port) != 0) { |
Holger Hans Peter Freyther | b54048f | 2010-11-01 19:57:50 +0100 | [diff] [blame] | 485 | mgcp_rtp_end_reset(&endp->net_end); |
| 486 | mgcp_rtp_end_reset(&endp->bts_end); |
| 487 | return -1; |
| 488 | } |
| 489 | |
Holger Hans Peter Freyther | bd7b3c5 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 490 | if (allocate_port(endp, &endp->trans_bts, |
| 491 | &endp->cfg->transcoder_ports, |
| 492 | mgcp_bind_trans_bts_rtp_port) != 0) { |
| 493 | mgcp_rtp_end_reset(&endp->net_end); |
| 494 | mgcp_rtp_end_reset(&endp->bts_end); |
| 495 | mgcp_rtp_end_reset(&endp->trans_net); |
| 496 | return -1; |
| 497 | } |
| 498 | |
Holger Hans Peter Freyther | b54048f | 2010-11-01 19:57:50 +0100 | [diff] [blame] | 499 | /* remember that we have set up transcoding */ |
| 500 | endp->is_transcoded = 1; |
Holger Hans Peter Freyther | 218f856 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 501 | } |
| 502 | |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 503 | return 0; |
| 504 | } |
| 505 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 506 | 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] | 507 | { |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 508 | struct mgcp_trunk_config *tcfg; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 509 | struct mgcp_endpoint *endp = p->endp; |
Holger Hans Peter Freyther | 9e9392d | 2010-08-08 16:24:48 +0800 | [diff] [blame] | 510 | int error_code = 400; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 511 | |
Holger Hans Peter Freyther | 3488c3d | 2011-07-20 20:44:54 +0200 | [diff] [blame] | 512 | const char *local_options = NULL; |
| 513 | const char *callid = NULL; |
| 514 | const char *mode = NULL; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 515 | char *line; |
| 516 | |
| 517 | if (p->found != 0) |
| 518 | return create_err_response(NULL, 510, "CRCX", p->trans); |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 519 | |
Holger Hans Peter Freyther | 3488c3d | 2011-07-20 20:44:54 +0200 | [diff] [blame] | 520 | /* parse CallID C: and LocalParameters L: */ |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 521 | for_each_line(line, p->save) { |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 522 | switch (line[0]) { |
| 523 | case 'L': |
| 524 | local_options = (const char *) line + 3; |
| 525 | break; |
| 526 | case 'C': |
| 527 | callid = (const char *) line + 3; |
| 528 | break; |
| 529 | case 'M': |
| 530 | mode = (const char *) line + 3; |
| 531 | break; |
| 532 | default: |
| 533 | LOGP(DMGCP, LOGL_NOTICE, "Unhandled option: '%c'/%d on 0x%x\n", |
| 534 | *line, *line, ENDPOINT_NUMBER(endp)); |
| 535 | break; |
| 536 | } |
Holger Hans Peter Freyther | 3488c3d | 2011-07-20 20:44:54 +0200 | [diff] [blame] | 537 | } |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 538 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 539 | tcfg = p->endp->tcfg; |
Holger Hans Peter Freyther | 3488c3d | 2011-07-20 20:44:54 +0200 | [diff] [blame] | 540 | |
| 541 | /* Check required data */ |
| 542 | if (!callid || !mode) { |
| 543 | LOGP(DMGCP, LOGL_ERROR, "Missing callid and mode in CRCX on 0x%x\n", |
| 544 | ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 545 | return create_err_response(endp, 400, "CRCX", p->trans); |
Holger Hans Peter Freyther | 3488c3d | 2011-07-20 20:44:54 +0200 | [diff] [blame] | 546 | } |
| 547 | |
Holger Hans Peter Freyther | 39a97e2 | 2010-08-06 18:03:11 +0800 | [diff] [blame] | 548 | if (endp->allocated) { |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 549 | if (tcfg->force_realloc) { |
Holger Hans Peter Freyther | 408cc4a | 2010-04-07 10:51:27 +0200 | [diff] [blame] | 550 | LOGP(DMGCP, LOGL_NOTICE, "Endpoint 0x%x already allocated. Forcing realloc.\n", |
| 551 | ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | 32d4e50 | 2010-04-24 21:02:48 +0800 | [diff] [blame] | 552 | mgcp_free_endp(endp); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 553 | if (p->cfg->realloc_cb) |
| 554 | p->cfg->realloc_cb(tcfg, ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | 408cc4a | 2010-04-07 10:51:27 +0200 | [diff] [blame] | 555 | } else { |
| 556 | LOGP(DMGCP, LOGL_ERROR, "Endpoint is already used. 0x%x\n", |
| 557 | ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 558 | return create_err_response(endp, 400, "CRCX", p->trans); |
Holger Hans Peter Freyther | 408cc4a | 2010-04-07 10:51:27 +0200 | [diff] [blame] | 559 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 560 | } |
| 561 | |
Holger Hans Peter Freyther | 3488c3d | 2011-07-20 20:44:54 +0200 | [diff] [blame] | 562 | /* copy some parameters */ |
| 563 | endp->callid = talloc_strdup(tcfg->endpoints, callid); |
| 564 | |
| 565 | if (local_options) |
| 566 | endp->local_options = talloc_strdup(tcfg->endpoints, local_options); |
| 567 | |
| 568 | if (parse_conn_mode(mode, &endp->conn_mode) != 0) { |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 569 | error_code = 517; |
| 570 | goto error2; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 571 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 572 | |
| 573 | /* initialize */ |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 574 | endp->net_end.rtp_port = endp->net_end.rtcp_port = endp->bts_end.rtp_port = endp->bts_end.rtcp_port = 0; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 575 | |
| 576 | /* set to zero until we get the info */ |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 577 | 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] | 578 | |
| 579 | /* bind to the port now */ |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 580 | if (allocate_ports(endp) != 0) |
| 581 | goto error2; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 582 | |
| 583 | /* assign a local call identifier or fail */ |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 584 | endp->ci = generate_call_id(p->cfg); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 585 | if (endp->ci == CI_UNUSED) |
| 586 | goto error2; |
| 587 | |
Holger Hans Peter Freyther | 39a97e2 | 2010-08-06 18:03:11 +0800 | [diff] [blame] | 588 | endp->allocated = 1; |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 589 | endp->bts_end.payload_type = tcfg->audio_payload; |
Holger Hans Peter Freyther | ef6bb25 | 2010-02-26 13:41:22 +0100 | [diff] [blame] | 590 | |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 591 | /* policy CB */ |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 592 | if (p->cfg->policy_cb) { |
| 593 | int rc; |
| 594 | rc = p->cfg->policy_cb(tcfg, ENDPOINT_NUMBER(endp), |
| 595 | MGCP_ENDP_CRCX, p->trans); |
| 596 | switch (rc) { |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 597 | case MGCP_POLICY_REJECT: |
| 598 | LOGP(DMGCP, LOGL_NOTICE, "CRCX rejected by policy on 0x%x\n", |
| 599 | ENDPOINT_NUMBER(endp)); |
| 600 | mgcp_free_endp(endp); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 601 | return create_err_response(endp, 400, "CRCX", p->trans); |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 602 | break; |
| 603 | case MGCP_POLICY_DEFER: |
| 604 | /* stop processing */ |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 605 | create_transcoder(endp); |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 606 | return NULL; |
| 607 | break; |
| 608 | case MGCP_POLICY_CONT: |
| 609 | /* just continue */ |
| 610 | break; |
| 611 | } |
| 612 | } |
| 613 | |
Holger Hans Peter Freyther | e378cb1 | 2010-08-06 20:22:23 +0800 | [diff] [blame] | 614 | 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] | 615 | ENDPOINT_NUMBER(endp), endp->ci, |
| 616 | endp->net_end.local_port, endp->bts_end.local_port); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 617 | if (p->cfg->change_cb) |
| 618 | 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] | 619 | |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 620 | create_transcoder(endp); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 621 | return create_response_with_sdp(endp, "CRCX", p->trans); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 622 | error2: |
Holger Hans Peter Freyther | 414bf40 | 2010-08-06 07:05:13 +0800 | [diff] [blame] | 623 | mgcp_free_endp(endp); |
Holger Hans Peter Freyther | 2ada71d | 2010-02-03 09:13:10 +0100 | [diff] [blame] | 624 | 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] | 625 | return create_err_response(endp, error_code, "CRCX", p->trans); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 626 | } |
| 627 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 628 | 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] | 629 | { |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 630 | struct mgcp_endpoint *endp = p->endp; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 631 | int error_code = 500; |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 632 | int silent = 0; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 633 | char *line; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 634 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 635 | if (p->found != 0) |
| 636 | return create_err_response(NULL, 510, "MDCX", p->trans); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 637 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 638 | if (endp->ci == CI_UNUSED) { |
| 639 | LOGP(DMGCP, LOGL_ERROR, "Endpoint is not " |
| 640 | "holding a connection. 0x%x\n", ENDPOINT_NUMBER(endp)); |
| 641 | return create_err_response(endp, 400, "MDCX", p->trans); |
| 642 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 643 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 644 | for_each_line(line, p->save) { |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 645 | switch (line[0]) { |
| 646 | case 'C': { |
| 647 | if (verify_call_id(endp, line + 3) != 0) |
| 648 | goto error3; |
| 649 | break; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 650 | } |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 651 | case 'I': { |
| 652 | if (verify_ci(endp, line + 3) != 0) |
| 653 | goto error3; |
| 654 | break; |
| 655 | } |
| 656 | case 'L': |
| 657 | /* skip */ |
| 658 | break; |
| 659 | case 'M': |
| 660 | if (parse_conn_mode(line + 3, &endp->conn_mode) != 0) { |
| 661 | error_code = 517; |
| 662 | goto error3; |
| 663 | } |
| 664 | endp->orig_mode = endp->conn_mode; |
| 665 | break; |
| 666 | case 'Z': |
| 667 | silent = strcmp("noanswer", line + 3) == 0; |
| 668 | break; |
| 669 | case '\0': |
| 670 | /* SDP file begins */ |
| 671 | break; |
| 672 | case 'a': |
| 673 | case 'o': |
| 674 | case 's': |
| 675 | case 't': |
| 676 | case 'v': |
| 677 | /* skip these SDP attributes */ |
| 678 | break; |
| 679 | case 'm': { |
| 680 | int port; |
| 681 | int payload; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 682 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 683 | if (sscanf(line, "m=audio %d RTP/AVP %d", &port, &payload) == 2) { |
| 684 | endp->net_end.rtp_port = htons(port); |
| 685 | endp->net_end.rtcp_port = htons(port + 1); |
| 686 | endp->net_end.payload_type = payload; |
| 687 | } |
| 688 | break; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 689 | } |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 690 | case 'c': { |
| 691 | char ipv4[16]; |
| 692 | |
| 693 | if (sscanf(line, "c=IN IP4 %15s", ipv4) == 1) { |
| 694 | inet_aton(ipv4, &endp->net_end.addr); |
| 695 | } |
| 696 | break; |
| 697 | } |
| 698 | default: |
| 699 | LOGP(DMGCP, LOGL_NOTICE, "Unhandled option: '%c'/%d on 0x%x\n", |
| 700 | line[0], line[0], ENDPOINT_NUMBER(endp)); |
| 701 | break; |
| 702 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 703 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 704 | |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 705 | /* policy CB */ |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 706 | if (p->cfg->policy_cb) { |
| 707 | int rc; |
| 708 | rc = p->cfg->policy_cb(endp->tcfg, ENDPOINT_NUMBER(endp), |
| 709 | MGCP_ENDP_MDCX, p->trans); |
| 710 | switch (rc) { |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 711 | case MGCP_POLICY_REJECT: |
| 712 | LOGP(DMGCP, LOGL_NOTICE, "MDCX rejected by policy on 0x%x\n", |
| 713 | ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 714 | if (silent) |
| 715 | goto out_silent; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 716 | return create_err_response(endp, 400, "MDCX", p->trans); |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 717 | break; |
| 718 | case MGCP_POLICY_DEFER: |
| 719 | /* stop processing */ |
| 720 | return NULL; |
| 721 | break; |
| 722 | case MGCP_POLICY_CONT: |
| 723 | /* just continue */ |
| 724 | break; |
| 725 | } |
| 726 | } |
| 727 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 728 | /* modify */ |
Holger Hans Peter Freyther | e378cb1 | 2010-08-06 20:22:23 +0800 | [diff] [blame] | 729 | 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] | 730 | 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] | 731 | if (p->cfg->change_cb) |
| 732 | p->cfg->change_cb(endp->tcfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_MDCX); |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 733 | if (silent) |
| 734 | goto out_silent; |
| 735 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 736 | return create_response_with_sdp(endp, "MDCX", p->trans); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 737 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 738 | error3: |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 739 | return create_err_response(endp, error_code, "MDCX", p->trans); |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 740 | |
| 741 | |
| 742 | out_silent: |
| 743 | return NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 744 | } |
| 745 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 746 | 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] | 747 | { |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 748 | struct mgcp_endpoint *endp = p->endp; |
Holger Hans Peter Freyther | 9e9392d | 2010-08-08 16:24:48 +0800 | [diff] [blame] | 749 | int error_code = 400; |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 750 | int silent = 0; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 751 | char *line; |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 752 | char stats[1048]; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 753 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 754 | if (p->found != 0) |
| 755 | return create_err_response(NULL, error_code, "DLCX", p->trans); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 756 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 757 | if (!p->endp->allocated) { |
| 758 | LOGP(DMGCP, LOGL_ERROR, "Endpoint is not used. 0x%x\n", |
| 759 | ENDPOINT_NUMBER(endp)); |
| 760 | return create_err_response(endp, 400, "DLCX", p->trans); |
| 761 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 762 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 763 | for_each_line(line, p->save) { |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 764 | switch (line[0]) { |
| 765 | case 'C': |
| 766 | if (verify_call_id(endp, line + 3) != 0) |
| 767 | goto error3; |
| 768 | break; |
| 769 | case 'I': |
| 770 | if (verify_ci(endp, line + 3) != 0) |
| 771 | goto error3; |
| 772 | break; |
| 773 | case 'Z': |
| 774 | silent = strcmp("noanswer", line + 3) == 0; |
| 775 | break; |
| 776 | default: |
| 777 | LOGP(DMGCP, LOGL_NOTICE, "Unhandled option: '%c'/%d on 0x%x\n", |
| 778 | line[0], line[0], ENDPOINT_NUMBER(endp)); |
| 779 | break; |
| 780 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 781 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 782 | |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 783 | /* policy CB */ |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 784 | if (p->cfg->policy_cb) { |
| 785 | int rc; |
| 786 | rc = p->cfg->policy_cb(endp->tcfg, ENDPOINT_NUMBER(endp), |
| 787 | MGCP_ENDP_DLCX, p->trans); |
| 788 | switch (rc) { |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 789 | case MGCP_POLICY_REJECT: |
| 790 | LOGP(DMGCP, LOGL_NOTICE, "DLCX rejected by policy on 0x%x\n", |
| 791 | ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 792 | if (silent) |
| 793 | goto out_silent; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 794 | return create_err_response(endp, 400, "DLCX", p->trans); |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 795 | break; |
| 796 | case MGCP_POLICY_DEFER: |
| 797 | /* stop processing */ |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 798 | delete_transcoder(endp); |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 799 | return NULL; |
| 800 | break; |
| 801 | case MGCP_POLICY_CONT: |
| 802 | /* just continue */ |
| 803 | break; |
| 804 | } |
| 805 | } |
| 806 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 807 | /* free the connection */ |
Holger Hans Peter Freyther | e378cb1 | 2010-08-06 20:22:23 +0800 | [diff] [blame] | 808 | 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] | 809 | 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] | 810 | |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 811 | /* save the statistics of the current call */ |
| 812 | mgcp_format_stats(endp, stats, sizeof(stats)); |
| 813 | |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 814 | delete_transcoder(endp); |
Holger Hans Peter Freyther | 154b955 | 2010-02-26 13:27:51 +0100 | [diff] [blame] | 815 | mgcp_free_endp(endp); |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 816 | if (p->cfg->change_cb) |
| 817 | 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] | 818 | |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 819 | if (silent) |
| 820 | goto out_silent; |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 821 | 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] | 822 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 823 | error3: |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 824 | return create_err_response(endp, error_code, "DLCX", p->trans); |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 825 | |
| 826 | out_silent: |
| 827 | return NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 828 | } |
| 829 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 830 | static struct msgb *handle_rsip(struct mgcp_parse_data *p) |
Holger Hans Peter Freyther | 9bdcc9c | 2010-03-31 06:39:35 +0200 | [diff] [blame] | 831 | { |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 832 | if (p->found != 0) { |
Holger Hans Peter Freyther | 74db774 | 2011-06-10 00:04:55 +0200 | [diff] [blame] | 833 | LOGP(DMGCP, LOGL_ERROR, "Failed to find the endpoint.\n"); |
| 834 | return NULL; |
| 835 | } |
| 836 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 837 | if (p->cfg->reset_cb) |
| 838 | p->cfg->reset_cb(p->endp->tcfg); |
Holger Hans Peter Freyther | 9bdcc9c | 2010-03-31 06:39:35 +0200 | [diff] [blame] | 839 | return NULL; |
| 840 | } |
| 841 | |
Holger Hans Peter Freyther | 8d0be25 | 2012-11-29 12:54:22 +0100 | [diff] [blame] | 842 | static char extract_tone(const char *line) |
| 843 | { |
| 844 | const char *str = strstr(line, "D/"); |
| 845 | if (!str) |
| 846 | return CHAR_MAX; |
| 847 | |
| 848 | return str[2]; |
| 849 | } |
| 850 | |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 851 | /* |
| 852 | * This can request like DTMF detection and forward, fax detection... it |
| 853 | * can also request when the notification should be send and such. We don't |
| 854 | * do this right now. |
| 855 | */ |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 856 | 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] | 857 | { |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 858 | int res = 0; |
| 859 | char *line; |
Holger Hans Peter Freyther | 8d0be25 | 2012-11-29 12:54:22 +0100 | [diff] [blame] | 860 | char tone = 0; |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 861 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 862 | if (p->found != 0) |
| 863 | return create_err_response(NULL, 400, "RQNT", p->trans); |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 864 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 865 | for_each_line(line, p->save) { |
Holger Hans Peter Freyther | 8d0be25 | 2012-11-29 12:54:22 +0100 | [diff] [blame] | 866 | switch (line[0]) { |
| 867 | case 'S': |
| 868 | tone = extract_tone(line); |
| 869 | break; |
| 870 | } |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 871 | } |
Holger Hans Peter Freyther | 8d0be25 | 2012-11-29 12:54:22 +0100 | [diff] [blame] | 872 | |
| 873 | /* we didn't see a signal request with a tone */ |
| 874 | if (tone == CHAR_MAX) |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 875 | return create_ok_response(p->endp, 200, "RQNT", p->trans); |
Holger Hans Peter Freyther | 8d0be25 | 2012-11-29 12:54:22 +0100 | [diff] [blame] | 876 | |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 877 | if (p->cfg->rqnt_cb) |
| 878 | res = p->cfg->rqnt_cb(p->endp, tone); |
Holger Hans Peter Freyther | 8d0be25 | 2012-11-29 12:54:22 +0100 | [diff] [blame] | 879 | |
| 880 | return res == 0 ? |
Holger Hans Peter Freyther | ce55361 | 2012-12-07 15:04:07 +0100 | [diff] [blame] | 881 | create_ok_response(p->endp, 200, "RQNT", p->trans) : |
| 882 | create_err_response(p->endp, res, "RQNT", p->trans); |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 883 | } |
| 884 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 885 | struct mgcp_config *mgcp_config_alloc(void) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 886 | { |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 887 | struct mgcp_config *cfg; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 888 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 889 | cfg = talloc_zero(NULL, struct mgcp_config); |
| 890 | if (!cfg) { |
| 891 | LOGP(DMGCP, LOGL_FATAL, "Failed to allocate config.\n"); |
| 892 | return NULL; |
| 893 | } |
| 894 | |
| 895 | cfg->source_port = 2427; |
| 896 | cfg->source_addr = talloc_strdup(cfg, "0.0.0.0"); |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 897 | |
Holger Hans Peter Freyther | b98ba72 | 2010-09-19 04:21:39 +0800 | [diff] [blame] | 898 | cfg->transcoder_remote_base = 4000; |
Holger Hans Peter Freyther | 15e7389 | 2010-08-05 07:10:56 +0800 | [diff] [blame] | 899 | |
| 900 | cfg->bts_ports.base_port = RTP_PORT_DEFAULT; |
| 901 | cfg->net_ports.base_port = RTP_PORT_NET_DEFAULT; |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 902 | |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 903 | /* default trunk handling */ |
| 904 | cfg->trunk.cfg = cfg; |
| 905 | cfg->trunk.trunk_nr = 0; |
| 906 | cfg->trunk.trunk_type = MGCP_TRUNK_VIRTUAL; |
| 907 | cfg->trunk.audio_name = talloc_strdup(cfg, "AMR/8000"); |
| 908 | cfg->trunk.audio_payload = 126; |
Holger Hans Peter Freyther | a8090d5 | 2012-05-11 13:00:45 +0200 | [diff] [blame] | 909 | cfg->trunk.omit_rtcp = 0; |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 910 | |
Holger Hans Peter Freyther | 0e939fe | 2011-02-28 12:11:02 +0100 | [diff] [blame] | 911 | INIT_LLIST_HEAD(&cfg->trunks); |
| 912 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 913 | return cfg; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 914 | } |
| 915 | |
Holger Hans Peter Freyther | 0e939fe | 2011-02-28 12:11:02 +0100 | [diff] [blame] | 916 | struct mgcp_trunk_config *mgcp_trunk_alloc(struct mgcp_config *cfg, int nr) |
| 917 | { |
| 918 | struct mgcp_trunk_config *trunk; |
| 919 | |
| 920 | trunk = talloc_zero(cfg, struct mgcp_trunk_config); |
| 921 | if (!trunk) { |
| 922 | LOGP(DMGCP, LOGL_ERROR, "Failed to allocate.\n"); |
| 923 | return NULL; |
| 924 | } |
| 925 | |
| 926 | trunk->cfg = cfg; |
| 927 | trunk->trunk_type = MGCP_TRUNK_E1; |
| 928 | trunk->trunk_nr = nr; |
| 929 | trunk->audio_name = talloc_strdup(cfg, "AMR/8000"); |
| 930 | trunk->audio_payload = 126; |
| 931 | trunk->number_endpoints = 33; |
Holger Hans Peter Freyther | a8090d5 | 2012-05-11 13:00:45 +0200 | [diff] [blame] | 932 | trunk->omit_rtcp = 0; |
Holger Hans Peter Freyther | 0e939fe | 2011-02-28 12:11:02 +0100 | [diff] [blame] | 933 | llist_add_tail(&trunk->entry, &cfg->trunks); |
| 934 | return trunk; |
| 935 | } |
| 936 | |
| 937 | struct mgcp_trunk_config *mgcp_trunk_num(struct mgcp_config *cfg, int index) |
| 938 | { |
| 939 | struct mgcp_trunk_config *trunk; |
| 940 | |
| 941 | llist_for_each_entry(trunk, &cfg->trunks, entry) |
| 942 | if (trunk->trunk_nr == index) |
| 943 | return trunk; |
| 944 | |
| 945 | return NULL; |
| 946 | } |
| 947 | |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 948 | static void mgcp_rtp_end_reset(struct mgcp_rtp_end *end) |
| 949 | { |
Holger Hans Peter Freyther | e97155a | 2010-11-02 19:06:13 +0100 | [diff] [blame] | 950 | if (end->local_alloc == PORT_ALLOC_DYNAMIC) { |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 951 | mgcp_free_rtp_port(end); |
Holger Hans Peter Freyther | e97155a | 2010-11-02 19:06:13 +0100 | [diff] [blame] | 952 | end->local_port = 0; |
| 953 | } |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 954 | |
Holger Hans Peter Freyther | c492127 | 2010-08-05 03:37:22 +0800 | [diff] [blame] | 955 | end->packets = 0; |
Holger Hans Peter Freyther | 952f752 | 2012-09-12 11:38:37 +0200 | [diff] [blame] | 956 | end->octets = 0; |
Holger Hans Peter Freyther | c492127 | 2010-08-05 03:37:22 +0800 | [diff] [blame] | 957 | memset(&end->addr, 0, sizeof(end->addr)); |
Holger Hans Peter Freyther | e97155a | 2010-11-02 19:06:13 +0100 | [diff] [blame] | 958 | end->rtp_port = end->rtcp_port = 0; |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 959 | end->payload_type = -1; |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 960 | end->local_alloc = -1; |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 961 | } |
| 962 | |
Holger Hans Peter Freyther | c492127 | 2010-08-05 03:37:22 +0800 | [diff] [blame] | 963 | static void mgcp_rtp_end_init(struct mgcp_rtp_end *end) |
| 964 | { |
| 965 | mgcp_rtp_end_reset(end); |
| 966 | end->rtp.fd = -1; |
| 967 | end->rtcp.fd = -1; |
| 968 | } |
| 969 | |
Holger Hans Peter Freyther | 1f0c5b4 | 2011-02-28 14:37:03 +0100 | [diff] [blame] | 970 | int mgcp_endpoints_allocate(struct mgcp_trunk_config *tcfg) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 971 | { |
| 972 | int i; |
| 973 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 974 | /* Initialize all endpoints */ |
Holger Hans Peter Freyther | 1f0c5b4 | 2011-02-28 14:37:03 +0100 | [diff] [blame] | 975 | tcfg->endpoints = _talloc_zero_array(tcfg->cfg, |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 976 | sizeof(struct mgcp_endpoint), |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 977 | tcfg->number_endpoints, "endpoints"); |
| 978 | if (!tcfg->endpoints) |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 979 | return -1; |
| 980 | |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 981 | for (i = 0; i < tcfg->number_endpoints; ++i) { |
| 982 | tcfg->endpoints[i].ci = CI_UNUSED; |
Holger Hans Peter Freyther | 1f0c5b4 | 2011-02-28 14:37:03 +0100 | [diff] [blame] | 983 | tcfg->endpoints[i].cfg = tcfg->cfg; |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 984 | tcfg->endpoints[i].tcfg = tcfg; |
| 985 | mgcp_rtp_end_init(&tcfg->endpoints[i].net_end); |
| 986 | mgcp_rtp_end_init(&tcfg->endpoints[i].bts_end); |
| 987 | mgcp_rtp_end_init(&tcfg->endpoints[i].trans_net); |
| 988 | mgcp_rtp_end_init(&tcfg->endpoints[i].trans_bts); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 989 | } |
| 990 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 991 | return 0; |
| 992 | } |
Holger Hans Peter Freyther | 154b955 | 2010-02-26 13:27:51 +0100 | [diff] [blame] | 993 | |
| 994 | void mgcp_free_endp(struct mgcp_endpoint *endp) |
| 995 | { |
Holger Hans Peter Freyther | c77efdf | 2010-03-31 12:31:09 +0200 | [diff] [blame] | 996 | LOGP(DMGCP, LOGL_DEBUG, "Deleting endpoint on: 0x%x\n", ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | 89976e8 | 2010-08-03 15:01:43 +0000 | [diff] [blame] | 997 | endp->ci = CI_UNUSED; |
Holger Hans Peter Freyther | 39a97e2 | 2010-08-06 18:03:11 +0800 | [diff] [blame] | 998 | endp->allocated = 0; |
Holger Hans Peter Freyther | 154b955 | 2010-02-26 13:27:51 +0100 | [diff] [blame] | 999 | |
Holger Hans Peter Freyther | 01d315f | 2012-12-07 11:52:16 +0100 | [diff] [blame] | 1000 | talloc_free(endp->callid); |
| 1001 | endp->callid = NULL; |
Holger Hans Peter Freyther | 154b955 | 2010-02-26 13:27:51 +0100 | [diff] [blame] | 1002 | |
Holger Hans Peter Freyther | 01d315f | 2012-12-07 11:52:16 +0100 | [diff] [blame] | 1003 | talloc_free(endp->local_options); |
| 1004 | endp->local_options = NULL; |
Holger Hans Peter Freyther | 154b955 | 2010-02-26 13:27:51 +0100 | [diff] [blame] | 1005 | |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 1006 | mgcp_rtp_end_reset(&endp->bts_end); |
| 1007 | mgcp_rtp_end_reset(&endp->net_end); |
Holger Hans Peter Freyther | 2126233 | 2010-11-01 20:53:31 +0100 | [diff] [blame] | 1008 | mgcp_rtp_end_reset(&endp->trans_net); |
Holger Hans Peter Freyther | bd7b3c5 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 1009 | mgcp_rtp_end_reset(&endp->trans_bts); |
Holger Hans Peter Freyther | b54048f | 2010-11-01 19:57:50 +0100 | [diff] [blame] | 1010 | endp->is_transcoded = 0; |
Holger Hans Peter Freyther | 380b871 | 2010-07-29 02:38:39 +0800 | [diff] [blame] | 1011 | |
Holger Hans Peter Freyther | 3186892 | 2010-08-03 11:59:04 +0000 | [diff] [blame] | 1012 | memset(&endp->net_state, 0, sizeof(endp->net_state)); |
| 1013 | memset(&endp->bts_state, 0, sizeof(endp->bts_state)); |
Holger Hans Peter Freyther | c597a4e | 2010-08-03 02:57:02 +0800 | [diff] [blame] | 1014 | |
| 1015 | endp->conn_mode = endp->orig_mode = MGCP_CONN_NONE; |
Holger Hans Peter Freyther | 6357a8e | 2010-08-05 12:07:00 +0000 | [diff] [blame] | 1016 | endp->allow_patch = 0; |
Holger Hans Peter Freyther | 260d6ed | 2010-08-06 01:12:21 +0800 | [diff] [blame] | 1017 | |
| 1018 | memset(&endp->taps, 0, sizeof(endp->taps)); |
Holger Hans Peter Freyther | 154b955 | 2010-02-26 13:27:51 +0100 | [diff] [blame] | 1019 | } |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1020 | |
Holger Hans Peter Freyther | 557b1ab | 2010-09-19 04:39:55 +0800 | [diff] [blame] | 1021 | static int send_trans(struct mgcp_config *cfg, const char *buf, int len) |
| 1022 | { |
| 1023 | struct sockaddr_in addr; |
| 1024 | |
| 1025 | memset(&addr, 0, sizeof(addr)); |
| 1026 | addr.sin_family = AF_INET; |
| 1027 | addr.sin_addr = cfg->transcoder_in; |
| 1028 | addr.sin_port = htons(2427); |
| 1029 | return sendto(cfg->gw_fd.bfd.fd, buf, len, 0, |
| 1030 | (struct sockaddr *) &addr, sizeof(addr)); |
| 1031 | } |
| 1032 | |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1033 | static void send_msg(struct mgcp_endpoint *endp, int endpoint, int port, |
| 1034 | const char *msg, const char *mode) |
| 1035 | { |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1036 | char buf[2096]; |
| 1037 | int len; |
| 1038 | |
| 1039 | /* hardcoded to AMR right now, we do not know the real type at this point */ |
| 1040 | len = snprintf(buf, sizeof(buf), |
| 1041 | "%s 42 %x@mgw MGCP 1.0\r\n" |
| 1042 | "C: 4256\r\n" |
| 1043 | "M: %s\r\n" |
| 1044 | "\r\n" |
| 1045 | "c=IN IP4 %s\r\n" |
| 1046 | "m=audio %d RTP/AVP %d\r\n" |
| 1047 | "a=rtpmap:%d %s\r\n", |
| 1048 | msg, endpoint, mode, endp->cfg->source_addr, |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 1049 | port, endp->tcfg->audio_payload, |
| 1050 | endp->tcfg->audio_payload, endp->tcfg->audio_name); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1051 | |
| 1052 | if (len < 0) |
| 1053 | return; |
| 1054 | |
| 1055 | buf[sizeof(buf) - 1] = '\0'; |
| 1056 | |
Holger Hans Peter Freyther | 557b1ab | 2010-09-19 04:39:55 +0800 | [diff] [blame] | 1057 | send_trans(endp->cfg, buf, len); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1058 | } |
| 1059 | |
| 1060 | static void send_dlcx(struct mgcp_endpoint *endp, int endpoint) |
| 1061 | { |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1062 | char buf[2096]; |
| 1063 | int len; |
| 1064 | |
| 1065 | len = snprintf(buf, sizeof(buf), |
| 1066 | "DLCX 43 %x@mgw MGCP 1.0\r\n" |
| 1067 | "C: 4256\r\n" |
| 1068 | , endpoint); |
| 1069 | |
| 1070 | if (len < 0) |
| 1071 | return; |
| 1072 | |
| 1073 | buf[sizeof(buf) - 1] = '\0'; |
| 1074 | |
Holger Hans Peter Freyther | 557b1ab | 2010-09-19 04:39:55 +0800 | [diff] [blame] | 1075 | send_trans(endp->cfg, buf, len); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1076 | } |
| 1077 | |
Harald Welte | 6a85705 | 2012-01-27 00:41:39 +0100 | [diff] [blame] | 1078 | static int send_agent(struct mgcp_config *cfg, const char *buf, int len) |
| 1079 | { |
| 1080 | return write(cfg->gw_fd.bfd.fd, buf, len); |
| 1081 | } |
| 1082 | |
| 1083 | int mgcp_send_reset_all(struct mgcp_config *cfg) |
| 1084 | { |
| 1085 | static const char mgcp_reset[] = { |
| 1086 | "RSIP 1 *@mgw MGCP 1.0\r\n" |
| 1087 | }; |
| 1088 | |
| 1089 | return send_agent(cfg, mgcp_reset, sizeof mgcp_reset -1); |
| 1090 | } |
| 1091 | |
| 1092 | int mgcp_send_reset_ep(struct mgcp_endpoint *endp, int endpoint) |
| 1093 | { |
| 1094 | char buf[128]; |
| 1095 | int len; |
| 1096 | |
| 1097 | len = snprintf(buf, sizeof(buf), |
| 1098 | "RSIP 39 %x@mgw MGCP 1.0\r\n" |
| 1099 | , endpoint); |
| 1100 | if (len < 0) |
| 1101 | return len; |
| 1102 | |
| 1103 | buf[sizeof(buf) - 1] = '\0'; |
| 1104 | |
| 1105 | return send_agent(endp->cfg, buf, len); |
| 1106 | } |
| 1107 | |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1108 | static void create_transcoder(struct mgcp_endpoint *endp) |
| 1109 | { |
| 1110 | int port; |
| 1111 | int in_endp = ENDPOINT_NUMBER(endp); |
Holger Hans Peter Freyther | bd7b3c5 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 1112 | int out_endp = endp_back_channel(in_endp); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1113 | |
Holger Hans Peter Freyther | b54048f | 2010-11-01 19:57:50 +0100 | [diff] [blame] | 1114 | if (!endp->is_transcoded) |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1115 | return; |
| 1116 | |
Holger Hans Peter Freyther | 8b19dee | 2010-11-01 22:38:25 +0100 | [diff] [blame] | 1117 | send_msg(endp, in_endp, endp->trans_bts.local_port, "CRCX", "sendrecv"); |
| 1118 | 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] | 1119 | send_msg(endp, out_endp, endp->trans_net.local_port, "CRCX", "sendrecv"); |
| 1120 | 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] | 1121 | |
Holger Hans Peter Freyther | bd7b3c5 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 1122 | port = rtp_calculate_port(in_endp, endp->cfg->transcoder_remote_base); |
| 1123 | endp->trans_bts.rtp_port = htons(port); |
| 1124 | endp->trans_bts.rtcp_port = htons(port + 1); |
| 1125 | |
Holger Hans Peter Freyther | b98ba72 | 2010-09-19 04:21:39 +0800 | [diff] [blame] | 1126 | 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] | 1127 | endp->trans_net.rtp_port = htons(port); |
| 1128 | endp->trans_net.rtcp_port = htons(port + 1); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1129 | } |
| 1130 | |
| 1131 | static void delete_transcoder(struct mgcp_endpoint *endp) |
| 1132 | { |
| 1133 | int in_endp = ENDPOINT_NUMBER(endp); |
Holger Hans Peter Freyther | bd7b3c5 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 1134 | int out_endp = endp_back_channel(in_endp); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1135 | |
Holger Hans Peter Freyther | b54048f | 2010-11-01 19:57:50 +0100 | [diff] [blame] | 1136 | if (!endp->is_transcoded) |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1137 | return; |
| 1138 | |
| 1139 | send_dlcx(endp, in_endp); |
| 1140 | send_dlcx(endp, out_endp); |
| 1141 | } |
Holger Hans Peter Freyther | f2eedff | 2010-09-19 04:36:07 +0800 | [diff] [blame] | 1142 | |
| 1143 | int mgcp_reset_transcoder(struct mgcp_config *cfg) |
| 1144 | { |
Holger Hans Peter Freyther | f2eedff | 2010-09-19 04:36:07 +0800 | [diff] [blame] | 1145 | if (!cfg->transcoder_ip) |
Holger Hans Peter Freyther | cf1c877 | 2010-09-24 04:41:28 +0800 | [diff] [blame] | 1146 | return 0; |
Holger Hans Peter Freyther | f2eedff | 2010-09-19 04:36:07 +0800 | [diff] [blame] | 1147 | |
| 1148 | static const char mgcp_reset[] = { |
| 1149 | "RSIP 1 13@mgw MGCP 1.0\r\n" |
| 1150 | }; |
| 1151 | |
Holger Hans Peter Freyther | 557b1ab | 2010-09-19 04:39:55 +0800 | [diff] [blame] | 1152 | return send_trans(cfg, mgcp_reset, sizeof mgcp_reset -1); |
Holger Hans Peter Freyther | f2eedff | 2010-09-19 04:36:07 +0800 | [diff] [blame] | 1153 | } |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 1154 | |
| 1155 | void mgcp_format_stats(struct mgcp_endpoint *endp, char *msg, size_t size) |
| 1156 | { |
Holger Hans Peter Freyther | cb306a6 | 2012-10-24 21:22:47 +0200 | [diff] [blame] | 1157 | uint32_t expected, jitter; |
Holger Hans Peter Freyther | 38e02c5 | 2012-10-22 18:09:35 +0200 | [diff] [blame] | 1158 | int ploss; |
| 1159 | mgcp_state_calc_loss(&endp->net_state, &endp->net_end, |
| 1160 | &expected, &ploss); |
Holger Hans Peter Freyther | cb306a6 | 2012-10-24 21:22:47 +0200 | [diff] [blame] | 1161 | jitter = mgcp_state_calc_jitter(&endp->net_state); |
Holger Hans Peter Freyther | 38e02c5 | 2012-10-22 18:09:35 +0200 | [diff] [blame] | 1162 | |
Holger Hans Peter Freyther | cb306a6 | 2012-10-24 21:22:47 +0200 | [diff] [blame] | 1163 | snprintf(msg, size, "\r\nP: PS=%u, OS=%u, PR=%u, OR=%u, PL=%d, JI=%d", |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 1164 | endp->bts_end.packets, endp->bts_end.octets, |
Holger Hans Peter Freyther | 38e02c5 | 2012-10-22 18:09:35 +0200 | [diff] [blame] | 1165 | endp->net_end.packets, endp->net_end.octets, |
Holger Hans Peter Freyther | cb306a6 | 2012-10-24 21:22:47 +0200 | [diff] [blame] | 1166 | ploss, jitter); |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 1167 | msg[size - 1] = '\0'; |
| 1168 | } |