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 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 39 | #define for_each_line(input, line, save) \ |
| 40 | for (line = strtok_r(input, "\r\n", &save); line; \ |
| 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 | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 45 | struct mgcp_request { |
| 46 | char *name; |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 47 | struct msgb *(*handle_request) (struct mgcp_config *cfg, struct msgb *msg); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 48 | char *debug_name; |
| 49 | }; |
| 50 | |
| 51 | #define MGCP_REQUEST(NAME, REQ, DEBUG_NAME) \ |
| 52 | { .name = NAME, .handle_request = REQ, .debug_name = DEBUG_NAME }, |
| 53 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 54 | static struct msgb *handle_audit_endpoint(struct mgcp_config *cfg, struct msgb *msg); |
| 55 | static struct msgb *handle_create_con(struct mgcp_config *cfg, struct msgb *msg); |
| 56 | static struct msgb *handle_delete_con(struct mgcp_config *cfg, struct msgb *msg); |
| 57 | static struct msgb *handle_modify_con(struct mgcp_config *cfg, struct msgb *msg); |
Holger Hans Peter Freyther | 9bdcc9c | 2010-03-31 06:39:35 +0200 | [diff] [blame] | 58 | static struct msgb *handle_rsip(struct mgcp_config *cfg, struct msgb *msg); |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 59 | static struct msgb *handle_noti_req(struct mgcp_config *cfg, struct msgb *msg); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 60 | |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 61 | static void create_transcoder(struct mgcp_endpoint *endp); |
| 62 | static void delete_transcoder(struct mgcp_endpoint *endp); |
| 63 | |
Holger Hans Peter Freyther | 4634013 | 2010-08-06 08:26:54 +0800 | [diff] [blame] | 64 | static uint32_t generate_call_id(struct mgcp_config *cfg) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 65 | { |
| 66 | int i; |
| 67 | |
| 68 | /* use the call id */ |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 69 | ++cfg->last_call_id; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 70 | |
| 71 | /* handle wrap around */ |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 72 | if (cfg->last_call_id == CI_UNUSED) |
| 73 | ++cfg->last_call_id; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 74 | |
| 75 | /* callstack can only be of size number_of_endpoints */ |
| 76 | /* 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] | 77 | for (i = 1; i < cfg->trunk.number_endpoints; ++i) |
| 78 | if (cfg->trunk.endpoints[i].ci == cfg->last_call_id) |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 79 | return generate_call_id(cfg); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 80 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 81 | return cfg->last_call_id; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 82 | } |
| 83 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 84 | /* |
| 85 | * array of function pointers for handling various |
| 86 | * messages. In the future this might be binary sorted |
| 87 | * for performance reasons. |
| 88 | */ |
| 89 | static const struct mgcp_request mgcp_requests [] = { |
| 90 | MGCP_REQUEST("AUEP", handle_audit_endpoint, "AuditEndpoint") |
| 91 | MGCP_REQUEST("CRCX", handle_create_con, "CreateConnection") |
| 92 | MGCP_REQUEST("DLCX", handle_delete_con, "DeleteConnection") |
| 93 | MGCP_REQUEST("MDCX", handle_modify_con, "ModifiyConnection") |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 94 | MGCP_REQUEST("RQNT", handle_noti_req, "NotificationRequest") |
Holger Hans Peter Freyther | 9bdcc9c | 2010-03-31 06:39:35 +0200 | [diff] [blame] | 95 | |
| 96 | /* SPEC extension */ |
| 97 | MGCP_REQUEST("RSIP", handle_rsip, "ReSetInProgress") |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 98 | }; |
| 99 | |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 100 | static struct msgb *mgcp_msgb_alloc(void) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 101 | { |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 102 | struct msgb *msg; |
| 103 | msg = msgb_alloc_headroom(4096, 128, "MGCP msg"); |
| 104 | if (!msg) |
| 105 | LOGP(DMGCP, LOGL_ERROR, "Failed to msgb for MGCP data.\n"); |
| 106 | |
| 107 | return msg; |
| 108 | } |
| 109 | |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 110 | static struct msgb *create_resp(int code, const char *txt, const char *msg, |
| 111 | const char *trans, const char *param, |
| 112 | const char *sdp) |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 113 | { |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 114 | int len; |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 115 | struct msgb *res; |
| 116 | |
| 117 | res = mgcp_msgb_alloc(); |
| 118 | if (!res) |
| 119 | return NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 120 | |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 121 | len = snprintf((char *) res->data, 2048, "%d %s%s%s\r\n%s", |
| 122 | code, trans, txt, param ? param : "", sdp ? sdp : ""); |
| 123 | if (len < 0) { |
| 124 | LOGP(DMGCP, LOGL_ERROR, "Failed to sprintf MGCP response.\n"); |
| 125 | msgb_free(res); |
| 126 | return NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 127 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 128 | |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 129 | res->l2h = msgb_put(res, len); |
Holger Hans Peter Freyther | 63f2db2 | 2010-02-26 13:30:57 +0100 | [diff] [blame] | 130 | LOGP(DMGCP, LOGL_DEBUG, "Sending response: code: %d for '%s'\n", code, res->l2h); |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 131 | return res; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 132 | } |
| 133 | |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 134 | struct msgb *mgcp_create_response_with_data(int code, const char *txt, |
| 135 | const char *msg, const char *trans, |
| 136 | const char *data) |
| 137 | { |
| 138 | return create_resp(code, txt, msg, trans, NULL, data); |
| 139 | } |
| 140 | |
| 141 | static struct msgb *create_ok_resp_with_param(int code, const char *msg, |
| 142 | const char *trans, const char *param) |
| 143 | { |
| 144 | return create_resp(code, " OK", msg, trans, param, NULL); |
| 145 | } |
| 146 | |
Holger Hans Peter Freyther | 6adac17 | 2011-01-06 16:19:55 +0100 | [diff] [blame] | 147 | static struct msgb *create_ok_response(int code, const char *msg, const char *trans) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 148 | { |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 149 | return create_ok_resp_with_param(code, msg, trans, NULL); |
Holger Hans Peter Freyther | 6adac17 | 2011-01-06 16:19:55 +0100 | [diff] [blame] | 150 | } |
| 151 | |
| 152 | static struct msgb *create_err_response(int code, const char *msg, const char *trans) |
| 153 | { |
| 154 | return mgcp_create_response_with_data(code, " FAIL", msg, trans, NULL); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 155 | } |
| 156 | |
Holger Hans Peter Freyther | 8d188ed | 2010-02-21 01:44:08 +0100 | [diff] [blame] | 157 | static struct msgb *create_response_with_sdp(struct mgcp_endpoint *endp, |
| 158 | const char *msg, const char *trans_id) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 159 | { |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 160 | const char *addr = endp->cfg->local_ip; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 161 | char sdp_record[4096]; |
| 162 | |
| 163 | if (!addr) |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 164 | addr = endp->cfg->source_addr; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 165 | |
| 166 | snprintf(sdp_record, sizeof(sdp_record) - 1, |
Holger Hans Peter Freyther | 4634013 | 2010-08-06 08:26:54 +0800 | [diff] [blame] | 167 | "I: %u\n\n" |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 168 | "v=0\r\n" |
Holger Hans Peter Freyther | c7e49d3 | 2011-07-20 20:43:15 +0200 | [diff] [blame] | 169 | "o=- %u 23 IN IP4 %s\r\n" |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 170 | "c=IN IP4 %s\r\n" |
Holger Hans Peter Freyther | c7e49d3 | 2011-07-20 20:43:15 +0200 | [diff] [blame] | 171 | "t=0 0\r\n" |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 172 | "m=audio %d RTP/AVP %d\r\n" |
| 173 | "a=rtpmap:%d %s\r\n", |
Holger Hans Peter Freyther | c7e49d3 | 2011-07-20 20:43:15 +0200 | [diff] [blame] | 174 | endp->ci, endp->ci, addr, addr, |
| 175 | endp->net_end.local_port, endp->bts_end.payload_type, |
| 176 | endp->bts_end.payload_type, endp->tcfg->audio_name); |
Holger Hans Peter Freyther | 6adac17 | 2011-01-06 16:19:55 +0100 | [diff] [blame] | 177 | return mgcp_create_response_with_data(200, " OK", msg, trans_id, sdp_record); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 178 | } |
| 179 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 180 | /* |
| 181 | * handle incoming messages: |
| 182 | * - this can be a command (four letters, space, transaction id) |
| 183 | * - or a response (three numbers, space, transaction id) |
| 184 | */ |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 185 | 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] | 186 | { |
| 187 | int code; |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 188 | struct msgb *resp = NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 189 | |
Holger Hans Peter Freyther | f36a11a | 2010-03-31 13:26:46 +0200 | [diff] [blame] | 190 | if (msgb_l2len(msg) < 4) { |
Holger Hans Peter Freyther | 2ada71d | 2010-02-03 09:13:10 +0100 | [diff] [blame] | 191 | LOGP(DMGCP, LOGL_ERROR, "mgs too short: %d\n", msg->len); |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 192 | return NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 193 | } |
| 194 | |
| 195 | /* attempt to treat it as a response */ |
Holger Hans Peter Freyther | f36a11a | 2010-03-31 13:26:46 +0200 | [diff] [blame] | 196 | 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] | 197 | LOGP(DMGCP, LOGL_DEBUG, "Response: Code: %d\n", code); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 198 | } else { |
| 199 | int i, handled = 0; |
| 200 | msg->l3h = &msg->l2h[4]; |
| 201 | for (i = 0; i < ARRAY_SIZE(mgcp_requests); ++i) |
Holger Hans Peter Freyther | f36a11a | 2010-03-31 13:26:46 +0200 | [diff] [blame] | 202 | if (strncmp(mgcp_requests[i].name, (const char *) &msg->l2h[0], 4) == 0) { |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 203 | handled = 1; |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 204 | resp = mgcp_requests[i].handle_request(cfg, msg); |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 205 | break; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 206 | } |
| 207 | if (!handled) { |
Holger Hans Peter Freyther | f36a11a | 2010-03-31 13:26:46 +0200 | [diff] [blame] | 208 | LOGP(DMGCP, LOGL_NOTICE, "MSG with type: '%.4s' not handled\n", &msg->l2h[0]); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 209 | } |
| 210 | } |
| 211 | |
Holger Hans Peter Freyther | 62e836c | 2010-02-03 11:03:45 +0100 | [diff] [blame] | 212 | return resp; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 213 | } |
| 214 | |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 215 | /** |
| 216 | * We have a null terminated string with the endpoint name here. We only |
| 217 | * support two kinds. Simple ones as seen on the BSC level and the ones |
| 218 | * seen on the trunk side. |
| 219 | */ |
| 220 | static struct mgcp_endpoint *find_e1_endpoint(struct mgcp_config *cfg, |
| 221 | const char *mgcp) |
| 222 | { |
| 223 | char *rest = NULL; |
Holger Hans Peter Freyther | 74e6111 | 2011-02-28 14:13:47 +0100 | [diff] [blame] | 224 | struct mgcp_trunk_config *tcfg; |
| 225 | int trunk, endp; |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 226 | |
| 227 | trunk = strtoul(mgcp + 6, &rest, 10); |
Holger Hans Peter Freyther | f43f2fc | 2011-01-07 11:30:21 +0100 | [diff] [blame] | 228 | if (rest == NULL || rest[0] != '/' || trunk < 1) { |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 229 | LOGP(DMGCP, LOGL_ERROR, "Wrong trunk name '%s'\n", mgcp); |
| 230 | return NULL; |
| 231 | } |
| 232 | |
| 233 | endp = strtoul(rest + 1, &rest, 10); |
| 234 | if (rest == NULL || rest[0] != '@') { |
Holger Hans Peter Freyther | f43f2fc | 2011-01-07 11:30:21 +0100 | [diff] [blame] | 235 | LOGP(DMGCP, LOGL_ERROR, "Wrong endpoint name '%s'\n", mgcp); |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 236 | return NULL; |
| 237 | } |
| 238 | |
| 239 | /* signalling is on timeslot 1 */ |
| 240 | if (endp == 1) |
| 241 | return NULL; |
| 242 | |
Holger Hans Peter Freyther | 74e6111 | 2011-02-28 14:13:47 +0100 | [diff] [blame] | 243 | tcfg = mgcp_trunk_num(cfg, trunk); |
| 244 | if (!tcfg) { |
| 245 | LOGP(DMGCP, LOGL_ERROR, "The trunk %d is not declared.\n", trunk); |
| 246 | return NULL; |
| 247 | } |
| 248 | |
| 249 | if (!tcfg->endpoints) { |
| 250 | LOGP(DMGCP, LOGL_ERROR, "Endpoints of trunk %d not allocated.\n", trunk); |
| 251 | return NULL; |
| 252 | } |
| 253 | |
| 254 | if (endp < 1 || endp >= tcfg->number_endpoints) { |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 255 | 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] | 256 | return NULL; |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 257 | } |
| 258 | |
Holger Hans Peter Freyther | 74e6111 | 2011-02-28 14:13:47 +0100 | [diff] [blame] | 259 | return &tcfg->endpoints[endp]; |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 260 | } |
| 261 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 262 | 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] | 263 | { |
| 264 | char *endptr = NULL; |
| 265 | unsigned int gw = INT_MAX; |
| 266 | |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 267 | if (strncmp(mgcp, "ds/e1", 5) == 0) { |
| 268 | return find_e1_endpoint(cfg, mgcp); |
| 269 | } else { |
| 270 | gw = strtoul(mgcp, &endptr, 16); |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 271 | if (gw > 0 && gw < cfg->trunk.number_endpoints && strcmp(endptr, "@mgw") == 0) |
| 272 | return &cfg->trunk.endpoints[gw]; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 273 | } |
| 274 | |
Holger Hans Peter Freyther | 9f239a2 | 2011-01-06 19:32:52 +0100 | [diff] [blame] | 275 | LOGP(DMGCP, LOGL_ERROR, "Not able to find endpoint: '%s'\n", mgcp); |
| 276 | return NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 277 | } |
| 278 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 279 | /** |
| 280 | * @returns 0 when the status line was complete and transaction_id and |
| 281 | * endp out parameters are set. |
| 282 | */ |
| 283 | static int mgcp_analyze_header(struct mgcp_config *cfg, char *data, |
Holger Hans Peter Freyther | f2f1591 | 2010-04-01 03:27:04 +0200 | [diff] [blame] | 284 | const char **transaction_id, struct mgcp_endpoint **endp) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 285 | { |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 286 | int i = 0; |
| 287 | char *elem, *save; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 288 | |
Holger Hans Peter Freyther | a820c5f | 2010-02-26 13:32:55 +0100 | [diff] [blame] | 289 | *transaction_id = "000000"; |
| 290 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 291 | for (elem = strtok_r(data, " ", &save); elem; |
| 292 | elem = strtok_r(NULL, " ", &save)) { |
| 293 | switch (i) { |
| 294 | case 0: |
| 295 | *transaction_id = elem; |
| 296 | break; |
| 297 | case 1: |
| 298 | if (endp) { |
| 299 | *endp = find_endpoint(cfg, elem); |
| 300 | if (!*endp) { |
| 301 | LOGP(DMGCP, LOGL_ERROR, |
| 302 | "Unable to find Endpoint `%s'\n", |
| 303 | elem); |
| 304 | return -1; |
| 305 | } |
| 306 | } |
| 307 | break; |
| 308 | case 2: |
| 309 | if (strcmp("MGCP", elem)) { |
| 310 | LOGP(DMGCP, LOGL_ERROR, |
| 311 | "MGCP header parsing error\n"); |
| 312 | return -1; |
| 313 | } |
| 314 | break; |
| 315 | case 3: |
| 316 | if (strcmp("1.0", elem)) { |
| 317 | LOGP(DMGCP, LOGL_ERROR, "MGCP version `%s' " |
| 318 | "not supported\n", elem); |
| 319 | return -1; |
| 320 | } |
| 321 | break; |
| 322 | } |
| 323 | i++; |
| 324 | } |
| 325 | |
| 326 | if (i != 4) { |
| 327 | LOGP(DMGCP, LOGL_ERROR, "MGCP status line too short.\n"); |
| 328 | *transaction_id = "000000"; |
| 329 | *endp = NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 330 | return -1; |
| 331 | } |
| 332 | |
Holger Hans Peter Freyther | f2f1591 | 2010-04-01 03:27:04 +0200 | [diff] [blame] | 333 | return 0; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 334 | } |
| 335 | |
| 336 | static int verify_call_id(const struct mgcp_endpoint *endp, |
| 337 | const char *callid) |
| 338 | { |
| 339 | if (strcmp(endp->callid, callid) != 0) { |
Holger Hans Peter Freyther | 2ada71d | 2010-02-03 09:13:10 +0100 | [diff] [blame] | 340 | 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] | 341 | ENDPOINT_NUMBER(endp), endp->callid, callid); |
| 342 | return -1; |
| 343 | } |
| 344 | |
| 345 | return 0; |
| 346 | } |
| 347 | |
| 348 | static int verify_ci(const struct mgcp_endpoint *endp, |
Holger Hans Peter Freyther | 4634013 | 2010-08-06 08:26:54 +0800 | [diff] [blame] | 349 | const char *_ci) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 350 | { |
Holger Hans Peter Freyther | 4634013 | 2010-08-06 08:26:54 +0800 | [diff] [blame] | 351 | uint32_t ci = strtoul(_ci, NULL, 10); |
| 352 | |
| 353 | if (ci != endp->ci) { |
| 354 | LOGP(DMGCP, LOGL_ERROR, "ConnectionIdentifiers do not match on 0x%x. %u != %s\n", |
| 355 | ENDPOINT_NUMBER(endp), endp->ci, _ci); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 356 | return -1; |
| 357 | } |
| 358 | |
| 359 | return 0; |
| 360 | } |
| 361 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 362 | static struct msgb *handle_audit_endpoint(struct mgcp_config *cfg, struct msgb *msg) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 363 | { |
Holger Hans Peter Freyther | 6adac17 | 2011-01-06 16:19:55 +0100 | [diff] [blame] | 364 | int found; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 365 | const char *trans_id; |
| 366 | struct mgcp_endpoint *endp; |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 367 | char *data = strtok((char *) msg->l3h, "\r\n"); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 368 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 369 | found = mgcp_analyze_header(cfg, data, &trans_id, &endp); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 370 | if (found != 0) |
Holger Hans Peter Freyther | 6adac17 | 2011-01-06 16:19:55 +0100 | [diff] [blame] | 371 | return create_err_response(500, "AUEP", trans_id); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 372 | else |
Holger Hans Peter Freyther | 6adac17 | 2011-01-06 16:19:55 +0100 | [diff] [blame] | 373 | return create_ok_response(200, "AUEP", trans_id); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 374 | } |
| 375 | |
Holger Hans Peter Freyther | adb6e1c | 2010-09-18 06:44:24 +0800 | [diff] [blame] | 376 | 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] | 377 | { |
| 378 | int ret = 0; |
| 379 | if (strcmp(msg, "recvonly") == 0) |
| 380 | *conn_mode = MGCP_CONN_RECV_ONLY; |
| 381 | else if (strcmp(msg, "sendrecv") == 0) |
| 382 | *conn_mode = MGCP_CONN_RECV_SEND; |
Holger Hans Peter Freyther | e02860a | 2010-09-18 20:21:44 +0800 | [diff] [blame] | 383 | else if (strcmp(msg, "sendonly") == 0) |
| 384 | *conn_mode = MGCP_CONN_SEND_ONLY; |
Holger Hans Peter Freyther | 98a3877 | 2010-08-03 02:27:21 +0800 | [diff] [blame] | 385 | else if (strcmp(msg, "loopback") == 0) |
| 386 | *conn_mode = MGCP_CONN_LOOPBACK; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 387 | else { |
Holger Hans Peter Freyther | 2ada71d | 2010-02-03 09:13:10 +0100 | [diff] [blame] | 388 | LOGP(DMGCP, LOGL_ERROR, "Unknown connection mode: '%s'\n", msg); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 389 | ret = -1; |
| 390 | } |
| 391 | |
| 392 | return ret; |
| 393 | } |
| 394 | |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 395 | 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] | 396 | struct mgcp_port_range *range, |
| 397 | int (*alloc)(struct mgcp_endpoint *endp, int port)) |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 398 | { |
| 399 | int i; |
| 400 | |
| 401 | if (range->mode == PORT_ALLOC_STATIC) { |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 402 | end->local_alloc = PORT_ALLOC_STATIC; |
| 403 | return 0; |
| 404 | } |
| 405 | |
| 406 | /* attempt to find a port */ |
| 407 | for (i = 0; i < 200; ++i) { |
| 408 | int rc; |
| 409 | |
| 410 | if (range->last_port >= range->range_end) |
| 411 | range->last_port = range->range_start; |
| 412 | |
Holger Hans Peter Freyther | 218f856 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 413 | rc = alloc(endp, range->last_port); |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 414 | |
| 415 | range->last_port += 2; |
| 416 | if (rc == 0) { |
| 417 | end->local_alloc = PORT_ALLOC_DYNAMIC; |
| 418 | return 0; |
| 419 | } |
| 420 | |
| 421 | } |
| 422 | |
Holger Hans Peter Freyther | 218f856 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 423 | LOGP(DMGCP, LOGL_ERROR, "Allocating a RTP/RTCP port failed 200 times 0x%x.\n", |
| 424 | ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 425 | return -1; |
| 426 | } |
| 427 | |
| 428 | static int allocate_ports(struct mgcp_endpoint *endp) |
| 429 | { |
Holger Hans Peter Freyther | 218f856 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 430 | if (allocate_port(endp, &endp->net_end, &endp->cfg->net_ports, |
| 431 | mgcp_bind_net_rtp_port) != 0) |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 432 | return -1; |
| 433 | |
Holger Hans Peter Freyther | 218f856 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 434 | if (allocate_port(endp, &endp->bts_end, &endp->cfg->bts_ports, |
| 435 | mgcp_bind_bts_rtp_port) != 0) { |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 436 | mgcp_rtp_end_reset(&endp->net_end); |
| 437 | return -1; |
| 438 | } |
| 439 | |
Holger Hans Peter Freyther | 6990687 | 2011-02-28 14:51:48 +0100 | [diff] [blame] | 440 | 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] | 441 | if (allocate_port(endp, &endp->trans_net, |
Holger Hans Peter Freyther | b54048f | 2010-11-01 19:57:50 +0100 | [diff] [blame] | 442 | &endp->cfg->transcoder_ports, |
Holger Hans Peter Freyther | bd7b3c5 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 443 | mgcp_bind_trans_net_rtp_port) != 0) { |
Holger Hans Peter Freyther | b54048f | 2010-11-01 19:57:50 +0100 | [diff] [blame] | 444 | mgcp_rtp_end_reset(&endp->net_end); |
| 445 | mgcp_rtp_end_reset(&endp->bts_end); |
| 446 | return -1; |
| 447 | } |
| 448 | |
Holger Hans Peter Freyther | bd7b3c5 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 449 | if (allocate_port(endp, &endp->trans_bts, |
| 450 | &endp->cfg->transcoder_ports, |
| 451 | mgcp_bind_trans_bts_rtp_port) != 0) { |
| 452 | mgcp_rtp_end_reset(&endp->net_end); |
| 453 | mgcp_rtp_end_reset(&endp->bts_end); |
| 454 | mgcp_rtp_end_reset(&endp->trans_net); |
| 455 | return -1; |
| 456 | } |
| 457 | |
Holger Hans Peter Freyther | b54048f | 2010-11-01 19:57:50 +0100 | [diff] [blame] | 458 | /* remember that we have set up transcoding */ |
| 459 | endp->is_transcoded = 1; |
Holger Hans Peter Freyther | 218f856 | 2010-09-18 02:30:02 +0800 | [diff] [blame] | 460 | } |
| 461 | |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 462 | return 0; |
| 463 | } |
| 464 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 465 | static struct msgb *handle_create_con(struct mgcp_config *cfg, struct msgb *msg) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 466 | { |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 467 | const char *trans_id; |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 468 | struct mgcp_trunk_config *tcfg; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 469 | struct mgcp_endpoint *endp; |
Holger Hans Peter Freyther | 9e9392d | 2010-08-08 16:24:48 +0800 | [diff] [blame] | 470 | int error_code = 400; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 471 | |
Holger Hans Peter Freyther | 3488c3d | 2011-07-20 20:44:54 +0200 | [diff] [blame] | 472 | const char *local_options = NULL; |
| 473 | const char *callid = NULL; |
| 474 | const char *mode = NULL; |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 475 | char *line, *save; |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 476 | |
Holger Hans Peter Freyther | 3488c3d | 2011-07-20 20:44:54 +0200 | [diff] [blame] | 477 | /* parse CallID C: and LocalParameters L: */ |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 478 | for_each_line((char *) msg->l3h, line, save) { |
| 479 | /* skip first line */ |
| 480 | if (line == (char *) msg->l3h) { |
| 481 | int found = mgcp_analyze_header(cfg, line, &trans_id, &endp); |
| 482 | if (found != 0) |
| 483 | return create_err_response(510, "CRCX", trans_id); |
| 484 | continue; |
| 485 | } |
| 486 | |
| 487 | switch (line[0]) { |
| 488 | case 'L': |
| 489 | local_options = (const char *) line + 3; |
| 490 | break; |
| 491 | case 'C': |
| 492 | callid = (const char *) line + 3; |
| 493 | break; |
| 494 | case 'M': |
| 495 | mode = (const char *) line + 3; |
| 496 | break; |
| 497 | default: |
| 498 | LOGP(DMGCP, LOGL_NOTICE, "Unhandled option: '%c'/%d on 0x%x\n", |
| 499 | *line, *line, ENDPOINT_NUMBER(endp)); |
| 500 | break; |
| 501 | } |
Holger Hans Peter Freyther | 3488c3d | 2011-07-20 20:44:54 +0200 | [diff] [blame] | 502 | } |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 503 | |
| 504 | tcfg = endp->tcfg; |
Holger Hans Peter Freyther | 3488c3d | 2011-07-20 20:44:54 +0200 | [diff] [blame] | 505 | |
| 506 | /* Check required data */ |
| 507 | if (!callid || !mode) { |
| 508 | LOGP(DMGCP, LOGL_ERROR, "Missing callid and mode in CRCX on 0x%x\n", |
| 509 | ENDPOINT_NUMBER(endp)); |
| 510 | return create_err_response(400, "CRCX", trans_id); |
| 511 | } |
| 512 | |
| 513 | /* this appears to be a retransmission, maybe check trans id */ |
| 514 | if (endp->allocated && |
| 515 | memcmp(endp->callid, callid, strlen(endp->callid)) == 0) |
| 516 | return create_response_with_sdp(endp, "CRCX", trans_id); |
| 517 | |
Holger Hans Peter Freyther | 39a97e2 | 2010-08-06 18:03:11 +0800 | [diff] [blame] | 518 | if (endp->allocated) { |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 519 | if (tcfg->force_realloc) { |
Holger Hans Peter Freyther | 408cc4a | 2010-04-07 10:51:27 +0200 | [diff] [blame] | 520 | LOGP(DMGCP, LOGL_NOTICE, "Endpoint 0x%x already allocated. Forcing realloc.\n", |
| 521 | ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | 32d4e50 | 2010-04-24 21:02:48 +0800 | [diff] [blame] | 522 | mgcp_free_endp(endp); |
Holger Hans Peter Freyther | 869e38e | 2010-08-06 17:54:27 +0800 | [diff] [blame] | 523 | if (cfg->realloc_cb) |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 524 | cfg->realloc_cb(tcfg, ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | 408cc4a | 2010-04-07 10:51:27 +0200 | [diff] [blame] | 525 | } else { |
| 526 | LOGP(DMGCP, LOGL_ERROR, "Endpoint is already used. 0x%x\n", |
| 527 | ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | 6adac17 | 2011-01-06 16:19:55 +0100 | [diff] [blame] | 528 | return create_err_response(400, "CRCX", trans_id); |
Holger Hans Peter Freyther | 408cc4a | 2010-04-07 10:51:27 +0200 | [diff] [blame] | 529 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 530 | } |
| 531 | |
Holger Hans Peter Freyther | 3488c3d | 2011-07-20 20:44:54 +0200 | [diff] [blame] | 532 | /* copy some parameters */ |
| 533 | endp->callid = talloc_strdup(tcfg->endpoints, callid); |
| 534 | |
| 535 | if (local_options) |
| 536 | endp->local_options = talloc_strdup(tcfg->endpoints, local_options); |
| 537 | |
| 538 | if (parse_conn_mode(mode, &endp->conn_mode) != 0) { |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 539 | error_code = 517; |
| 540 | goto error2; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 541 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 542 | |
| 543 | /* initialize */ |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 544 | 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] | 545 | |
| 546 | /* set to zero until we get the info */ |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 547 | 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] | 548 | |
| 549 | /* bind to the port now */ |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 550 | if (allocate_ports(endp) != 0) |
| 551 | goto error2; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 552 | |
| 553 | /* assign a local call identifier or fail */ |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 554 | endp->ci = generate_call_id(cfg); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 555 | if (endp->ci == CI_UNUSED) |
| 556 | goto error2; |
| 557 | |
Holger Hans Peter Freyther | 39a97e2 | 2010-08-06 18:03:11 +0800 | [diff] [blame] | 558 | endp->allocated = 1; |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 559 | endp->bts_end.payload_type = tcfg->audio_payload; |
Holger Hans Peter Freyther | ef6bb25 | 2010-02-26 13:41:22 +0100 | [diff] [blame] | 560 | |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 561 | /* policy CB */ |
| 562 | if (cfg->policy_cb) { |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 563 | switch (cfg->policy_cb(tcfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_CRCX, trans_id)) { |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 564 | case MGCP_POLICY_REJECT: |
| 565 | LOGP(DMGCP, LOGL_NOTICE, "CRCX rejected by policy on 0x%x\n", |
| 566 | ENDPOINT_NUMBER(endp)); |
| 567 | mgcp_free_endp(endp); |
Holger Hans Peter Freyther | 6adac17 | 2011-01-06 16:19:55 +0100 | [diff] [blame] | 568 | return create_err_response(400, "CRCX", trans_id); |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 569 | break; |
| 570 | case MGCP_POLICY_DEFER: |
| 571 | /* stop processing */ |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 572 | create_transcoder(endp); |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 573 | return NULL; |
| 574 | break; |
| 575 | case MGCP_POLICY_CONT: |
| 576 | /* just continue */ |
| 577 | break; |
| 578 | } |
| 579 | } |
| 580 | |
Holger Hans Peter Freyther | e378cb1 | 2010-08-06 20:22:23 +0800 | [diff] [blame] | 581 | 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] | 582 | ENDPOINT_NUMBER(endp), endp->ci, |
| 583 | endp->net_end.local_port, endp->bts_end.local_port); |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 584 | if (cfg->change_cb) |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 585 | cfg->change_cb(tcfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_CRCX); |
Holger Hans Peter Freyther | 77f7afe | 2010-02-03 09:54:43 +0100 | [diff] [blame] | 586 | |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 587 | create_transcoder(endp); |
Holger Hans Peter Freyther | 8d188ed | 2010-02-21 01:44:08 +0100 | [diff] [blame] | 588 | return create_response_with_sdp(endp, "CRCX", trans_id); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 589 | error2: |
Holger Hans Peter Freyther | 414bf40 | 2010-08-06 07:05:13 +0800 | [diff] [blame] | 590 | mgcp_free_endp(endp); |
Holger Hans Peter Freyther | 2ada71d | 2010-02-03 09:13:10 +0100 | [diff] [blame] | 591 | LOGP(DMGCP, LOGL_NOTICE, "Resource error on 0x%x\n", ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | 6adac17 | 2011-01-06 16:19:55 +0100 | [diff] [blame] | 592 | return create_err_response(error_code, "CRCX", trans_id); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 593 | } |
| 594 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 595 | static struct msgb *handle_modify_con(struct mgcp_config *cfg, struct msgb *msg) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 596 | { |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 597 | const char *trans_id; |
| 598 | struct mgcp_endpoint *endp; |
| 599 | int error_code = 500; |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 600 | int silent = 0; |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 601 | char *line, *save; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 602 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 603 | for_each_line((char *) msg->l3h, line, save) { |
| 604 | /* skip first line */ |
| 605 | if (line == (char *) msg->l3h) { |
| 606 | int found = mgcp_analyze_header(cfg, line, &trans_id, |
| 607 | &endp); |
| 608 | if (found != 0) |
| 609 | return create_err_response(510, "MDCX", |
| 610 | trans_id); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 611 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 612 | if (endp->ci == CI_UNUSED) { |
| 613 | LOGP(DMGCP, LOGL_ERROR, "Endpoint is not " |
| 614 | "holding a connection. 0x%x\n", |
| 615 | ENDPOINT_NUMBER(endp)); |
| 616 | return create_err_response(400, "MDCX", trans_id); |
| 617 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 618 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 619 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 620 | switch (line[0]) { |
| 621 | case 'C': { |
| 622 | if (verify_call_id(endp, line + 3) != 0) |
| 623 | goto error3; |
| 624 | break; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 625 | } |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 626 | case 'I': { |
| 627 | if (verify_ci(endp, line + 3) != 0) |
| 628 | goto error3; |
| 629 | break; |
| 630 | } |
| 631 | case 'L': |
| 632 | /* skip */ |
| 633 | break; |
| 634 | case 'M': |
| 635 | if (parse_conn_mode(line + 3, &endp->conn_mode) != 0) { |
| 636 | error_code = 517; |
| 637 | goto error3; |
| 638 | } |
| 639 | endp->orig_mode = endp->conn_mode; |
| 640 | break; |
| 641 | case 'Z': |
| 642 | silent = strcmp("noanswer", line + 3) == 0; |
| 643 | break; |
| 644 | case '\0': |
| 645 | /* SDP file begins */ |
| 646 | break; |
| 647 | case 'a': |
| 648 | case 'o': |
| 649 | case 's': |
| 650 | case 't': |
| 651 | case 'v': |
| 652 | /* skip these SDP attributes */ |
| 653 | break; |
| 654 | case 'm': { |
| 655 | int port; |
| 656 | int payload; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 657 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 658 | if (sscanf(line, "m=audio %d RTP/AVP %d", &port, &payload) == 2) { |
| 659 | endp->net_end.rtp_port = htons(port); |
| 660 | endp->net_end.rtcp_port = htons(port + 1); |
| 661 | endp->net_end.payload_type = payload; |
| 662 | } |
| 663 | break; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 664 | } |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 665 | case 'c': { |
| 666 | char ipv4[16]; |
| 667 | |
| 668 | if (sscanf(line, "c=IN IP4 %15s", ipv4) == 1) { |
| 669 | inet_aton(ipv4, &endp->net_end.addr); |
| 670 | } |
| 671 | break; |
| 672 | } |
| 673 | default: |
| 674 | LOGP(DMGCP, LOGL_NOTICE, "Unhandled option: '%c'/%d on 0x%x\n", |
| 675 | line[0], line[0], ENDPOINT_NUMBER(endp)); |
| 676 | break; |
| 677 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 678 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 679 | |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 680 | /* policy CB */ |
| 681 | if (cfg->policy_cb) { |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 682 | switch (cfg->policy_cb(endp->tcfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_MDCX, trans_id)) { |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 683 | case MGCP_POLICY_REJECT: |
| 684 | LOGP(DMGCP, LOGL_NOTICE, "MDCX rejected by policy on 0x%x\n", |
| 685 | ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 686 | if (silent) |
| 687 | goto out_silent; |
Holger Hans Peter Freyther | 6adac17 | 2011-01-06 16:19:55 +0100 | [diff] [blame] | 688 | return create_err_response(400, "MDCX", trans_id); |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 689 | break; |
| 690 | case MGCP_POLICY_DEFER: |
| 691 | /* stop processing */ |
| 692 | return NULL; |
| 693 | break; |
| 694 | case MGCP_POLICY_CONT: |
| 695 | /* just continue */ |
| 696 | break; |
| 697 | } |
| 698 | } |
| 699 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 700 | /* modify */ |
Holger Hans Peter Freyther | e378cb1 | 2010-08-06 20:22:23 +0800 | [diff] [blame] | 701 | 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] | 702 | ENDPOINT_NUMBER(endp), inet_ntoa(endp->net_end.addr), ntohs(endp->net_end.rtp_port)); |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 703 | if (cfg->change_cb) |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 704 | 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] | 705 | if (silent) |
| 706 | goto out_silent; |
| 707 | |
Holger Hans Peter Freyther | 8d188ed | 2010-02-21 01:44:08 +0100 | [diff] [blame] | 708 | return create_response_with_sdp(endp, "MDCX", trans_id); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 709 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 710 | error3: |
Holger Hans Peter Freyther | 6adac17 | 2011-01-06 16:19:55 +0100 | [diff] [blame] | 711 | return create_err_response(error_code, "MDCX", trans_id); |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 712 | |
| 713 | |
| 714 | out_silent: |
| 715 | return NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 716 | } |
| 717 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 718 | static struct msgb *handle_delete_con(struct mgcp_config *cfg, struct msgb *msg) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 719 | { |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 720 | const char *trans_id; |
| 721 | struct mgcp_endpoint *endp; |
Holger Hans Peter Freyther | 9e9392d | 2010-08-08 16:24:48 +0800 | [diff] [blame] | 722 | int error_code = 400; |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 723 | int silent = 0; |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 724 | char *line, *save; |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 725 | char stats[1048]; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 726 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 727 | for_each_line((char *) msg->l3h, line, save) { |
| 728 | /* skip first line */ |
| 729 | if ((char *) msg->l3h == line) { |
| 730 | int found = mgcp_analyze_header(cfg, line, &trans_id, |
| 731 | &endp); |
| 732 | if (found != 0) |
| 733 | return create_err_response(error_code, "DLCX", |
| 734 | trans_id); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 735 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 736 | if (!endp->allocated) { |
| 737 | LOGP(DMGCP, LOGL_ERROR, "Endpoint is not " |
| 738 | "used. 0x%x\n", ENDPOINT_NUMBER(endp)); |
| 739 | return create_err_response(400, "DLCX", |
| 740 | trans_id); |
| 741 | } |
| 742 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 743 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 744 | switch (line[0]) { |
| 745 | case 'C': |
| 746 | if (verify_call_id(endp, line + 3) != 0) |
| 747 | goto error3; |
| 748 | break; |
| 749 | case 'I': |
| 750 | if (verify_ci(endp, line + 3) != 0) |
| 751 | goto error3; |
| 752 | break; |
| 753 | case 'Z': |
| 754 | silent = strcmp("noanswer", line + 3) == 0; |
| 755 | break; |
| 756 | default: |
| 757 | LOGP(DMGCP, LOGL_NOTICE, "Unhandled option: '%c'/%d on 0x%x\n", |
| 758 | line[0], line[0], ENDPOINT_NUMBER(endp)); |
| 759 | break; |
| 760 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 761 | } |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 762 | |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 763 | /* policy CB */ |
| 764 | if (cfg->policy_cb) { |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 765 | switch (cfg->policy_cb(endp->tcfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_DLCX, trans_id)) { |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 766 | case MGCP_POLICY_REJECT: |
| 767 | LOGP(DMGCP, LOGL_NOTICE, "DLCX rejected by policy on 0x%x\n", |
| 768 | ENDPOINT_NUMBER(endp)); |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 769 | if (silent) |
| 770 | goto out_silent; |
Holger Hans Peter Freyther | 6adac17 | 2011-01-06 16:19:55 +0100 | [diff] [blame] | 771 | return create_err_response(400, "DLCX", trans_id); |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 772 | break; |
| 773 | case MGCP_POLICY_DEFER: |
| 774 | /* stop processing */ |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 775 | delete_transcoder(endp); |
Holger Hans Peter Freyther | fe86d3c | 2010-02-26 13:37:05 +0100 | [diff] [blame] | 776 | return NULL; |
| 777 | break; |
| 778 | case MGCP_POLICY_CONT: |
| 779 | /* just continue */ |
| 780 | break; |
| 781 | } |
| 782 | } |
| 783 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 784 | /* free the connection */ |
Holger Hans Peter Freyther | e378cb1 | 2010-08-06 20:22:23 +0800 | [diff] [blame] | 785 | 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] | 786 | 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] | 787 | |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 788 | /* save the statistics of the current call */ |
| 789 | mgcp_format_stats(endp, stats, sizeof(stats)); |
| 790 | |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 791 | delete_transcoder(endp); |
Holger Hans Peter Freyther | 154b955 | 2010-02-26 13:27:51 +0100 | [diff] [blame] | 792 | mgcp_free_endp(endp); |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 793 | if (cfg->change_cb) |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 794 | 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] | 795 | |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 796 | if (silent) |
| 797 | goto out_silent; |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 798 | return create_ok_resp_with_param(250, "DLCX", trans_id, stats); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 799 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 800 | error3: |
Holger Hans Peter Freyther | 6adac17 | 2011-01-06 16:19:55 +0100 | [diff] [blame] | 801 | return create_err_response(error_code, "DLCX", trans_id); |
Holger Hans Peter Freyther | e3d16bb | 2010-04-22 11:58:13 +0800 | [diff] [blame] | 802 | |
| 803 | out_silent: |
| 804 | return NULL; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 805 | } |
| 806 | |
Holger Hans Peter Freyther | 9bdcc9c | 2010-03-31 06:39:35 +0200 | [diff] [blame] | 807 | static struct msgb *handle_rsip(struct mgcp_config *cfg, struct msgb *msg) |
| 808 | { |
Holger Hans Peter Freyther | 74db774 | 2011-06-10 00:04:55 +0200 | [diff] [blame] | 809 | const char *trans_id; |
| 810 | struct mgcp_endpoint *endp; |
| 811 | int found; |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 812 | char *data = strtok((char *) msg->l3h, "\r\n"); |
Holger Hans Peter Freyther | 74db774 | 2011-06-10 00:04:55 +0200 | [diff] [blame] | 813 | |
Harald Welte | ae19972 | 2012-01-27 12:31:36 +0100 | [diff] [blame] | 814 | found = mgcp_analyze_header(cfg, data, &trans_id, &endp); |
Holger Hans Peter Freyther | 74db774 | 2011-06-10 00:04:55 +0200 | [diff] [blame] | 815 | if (found != 0) { |
| 816 | LOGP(DMGCP, LOGL_ERROR, "Failed to find the endpoint.\n"); |
| 817 | return NULL; |
| 818 | } |
| 819 | |
Holger Hans Peter Freyther | 9bdcc9c | 2010-03-31 06:39:35 +0200 | [diff] [blame] | 820 | if (cfg->reset_cb) |
Holger Hans Peter Freyther | 74db774 | 2011-06-10 00:04:55 +0200 | [diff] [blame] | 821 | cfg->reset_cb(endp->tcfg); |
Holger Hans Peter Freyther | 9bdcc9c | 2010-03-31 06:39:35 +0200 | [diff] [blame] | 822 | return NULL; |
| 823 | } |
| 824 | |
Holger Hans Peter Freyther | 8d0be25 | 2012-11-29 12:54:22 +0100 | [diff] [blame] | 825 | static char extract_tone(const char *line) |
| 826 | { |
| 827 | const char *str = strstr(line, "D/"); |
| 828 | if (!str) |
| 829 | return CHAR_MAX; |
| 830 | |
| 831 | return str[2]; |
| 832 | } |
| 833 | |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 834 | /* |
| 835 | * This can request like DTMF detection and forward, fax detection... it |
| 836 | * can also request when the notification should be send and such. We don't |
| 837 | * do this right now. |
| 838 | */ |
| 839 | static struct msgb *handle_noti_req(struct mgcp_config *cfg, struct msgb *msg) |
| 840 | { |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 841 | const char *trans_id; |
| 842 | struct mgcp_endpoint *endp; |
Holger Hans Peter Freyther | 8d0be25 | 2012-11-29 12:54:22 +0100 | [diff] [blame] | 843 | int found, res = 0; |
| 844 | char *line, *save; |
| 845 | char tone = 0; |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 846 | |
Holger Hans Peter Freyther | 8d0be25 | 2012-11-29 12:54:22 +0100 | [diff] [blame] | 847 | for_each_line((char *) msg->l3h, line, save) { |
| 848 | /* skip first line */ |
| 849 | if ((char *) msg->l3h == line) { |
| 850 | found = mgcp_analyze_header(cfg, line, &trans_id, |
| 851 | &endp); |
| 852 | if (found != 0) |
| 853 | return create_err_response(400, "RQNT", |
| 854 | trans_id); |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 855 | |
Holger Hans Peter Freyther | 8d0be25 | 2012-11-29 12:54:22 +0100 | [diff] [blame] | 856 | if (!endp->allocated) { |
| 857 | LOGP(DMGCP, LOGL_ERROR, |
| 858 | "Endpoint is not used. 0x%x\n", |
| 859 | ENDPOINT_NUMBER(endp)); |
| 860 | return create_err_response(400, "RQNT", |
| 861 | trans_id); |
| 862 | } |
| 863 | } |
| 864 | |
| 865 | switch (line[0]) { |
| 866 | case 'S': |
| 867 | tone = extract_tone(line); |
| 868 | break; |
| 869 | } |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 870 | } |
Holger Hans Peter Freyther | 8d0be25 | 2012-11-29 12:54:22 +0100 | [diff] [blame] | 871 | |
| 872 | /* we didn't see a signal request with a tone */ |
| 873 | if (tone == CHAR_MAX) |
| 874 | return create_ok_response(200, "RQNT", trans_id); |
| 875 | |
| 876 | if (cfg->rqnt_cb) |
| 877 | res = cfg->rqnt_cb(endp, tone, (const char *) msg->l3h); |
| 878 | |
| 879 | return res == 0 ? |
| 880 | create_ok_response(200, "RQNT", trans_id) : |
| 881 | create_err_response(res, "RQNT", trans_id); |
Holger Hans Peter Freyther | 6e94d6d | 2011-01-25 23:33:54 +0100 | [diff] [blame] | 882 | } |
| 883 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 884 | struct mgcp_config *mgcp_config_alloc(void) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 885 | { |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 886 | struct mgcp_config *cfg; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 887 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 888 | cfg = talloc_zero(NULL, struct mgcp_config); |
| 889 | if (!cfg) { |
| 890 | LOGP(DMGCP, LOGL_FATAL, "Failed to allocate config.\n"); |
| 891 | return NULL; |
| 892 | } |
| 893 | |
| 894 | cfg->source_port = 2427; |
| 895 | cfg->source_addr = talloc_strdup(cfg, "0.0.0.0"); |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 896 | |
Holger Hans Peter Freyther | b98ba72 | 2010-09-19 04:21:39 +0800 | [diff] [blame] | 897 | cfg->transcoder_remote_base = 4000; |
Holger Hans Peter Freyther | 15e7389 | 2010-08-05 07:10:56 +0800 | [diff] [blame] | 898 | |
| 899 | cfg->bts_ports.base_port = RTP_PORT_DEFAULT; |
| 900 | cfg->net_ports.base_port = RTP_PORT_NET_DEFAULT; |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 901 | |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 902 | /* default trunk handling */ |
| 903 | cfg->trunk.cfg = cfg; |
| 904 | cfg->trunk.trunk_nr = 0; |
| 905 | cfg->trunk.trunk_type = MGCP_TRUNK_VIRTUAL; |
| 906 | cfg->trunk.audio_name = talloc_strdup(cfg, "AMR/8000"); |
| 907 | cfg->trunk.audio_payload = 126; |
Holger Hans Peter Freyther | a8090d5 | 2012-05-11 13:00:45 +0200 | [diff] [blame] | 908 | cfg->trunk.omit_rtcp = 0; |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 909 | |
Holger Hans Peter Freyther | 0e939fe | 2011-02-28 12:11:02 +0100 | [diff] [blame] | 910 | INIT_LLIST_HEAD(&cfg->trunks); |
| 911 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 912 | return cfg; |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 913 | } |
| 914 | |
Holger Hans Peter Freyther | 0e939fe | 2011-02-28 12:11:02 +0100 | [diff] [blame] | 915 | struct mgcp_trunk_config *mgcp_trunk_alloc(struct mgcp_config *cfg, int nr) |
| 916 | { |
| 917 | struct mgcp_trunk_config *trunk; |
| 918 | |
| 919 | trunk = talloc_zero(cfg, struct mgcp_trunk_config); |
| 920 | if (!trunk) { |
| 921 | LOGP(DMGCP, LOGL_ERROR, "Failed to allocate.\n"); |
| 922 | return NULL; |
| 923 | } |
| 924 | |
| 925 | trunk->cfg = cfg; |
| 926 | trunk->trunk_type = MGCP_TRUNK_E1; |
| 927 | trunk->trunk_nr = nr; |
| 928 | trunk->audio_name = talloc_strdup(cfg, "AMR/8000"); |
| 929 | trunk->audio_payload = 126; |
| 930 | trunk->number_endpoints = 33; |
Holger Hans Peter Freyther | a8090d5 | 2012-05-11 13:00:45 +0200 | [diff] [blame] | 931 | trunk->omit_rtcp = 0; |
Holger Hans Peter Freyther | 0e939fe | 2011-02-28 12:11:02 +0100 | [diff] [blame] | 932 | llist_add_tail(&trunk->entry, &cfg->trunks); |
| 933 | return trunk; |
| 934 | } |
| 935 | |
| 936 | struct mgcp_trunk_config *mgcp_trunk_num(struct mgcp_config *cfg, int index) |
| 937 | { |
| 938 | struct mgcp_trunk_config *trunk; |
| 939 | |
| 940 | llist_for_each_entry(trunk, &cfg->trunks, entry) |
| 941 | if (trunk->trunk_nr == index) |
| 942 | return trunk; |
| 943 | |
| 944 | return NULL; |
| 945 | } |
| 946 | |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 947 | static void mgcp_rtp_end_reset(struct mgcp_rtp_end *end) |
| 948 | { |
Holger Hans Peter Freyther | e97155a | 2010-11-02 19:06:13 +0100 | [diff] [blame] | 949 | if (end->local_alloc == PORT_ALLOC_DYNAMIC) { |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 950 | mgcp_free_rtp_port(end); |
Holger Hans Peter Freyther | e97155a | 2010-11-02 19:06:13 +0100 | [diff] [blame] | 951 | end->local_port = 0; |
| 952 | } |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 953 | |
Holger Hans Peter Freyther | c492127 | 2010-08-05 03:37:22 +0800 | [diff] [blame] | 954 | end->packets = 0; |
Holger Hans Peter Freyther | 952f752 | 2012-09-12 11:38:37 +0200 | [diff] [blame] | 955 | end->octets = 0; |
Holger Hans Peter Freyther | c492127 | 2010-08-05 03:37:22 +0800 | [diff] [blame] | 956 | memset(&end->addr, 0, sizeof(end->addr)); |
Holger Hans Peter Freyther | e97155a | 2010-11-02 19:06:13 +0100 | [diff] [blame] | 957 | end->rtp_port = end->rtcp_port = 0; |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 958 | end->payload_type = -1; |
Holger Hans Peter Freyther | f138f91 | 2010-08-05 08:08:17 +0800 | [diff] [blame] | 959 | end->local_alloc = -1; |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 960 | } |
| 961 | |
Holger Hans Peter Freyther | c492127 | 2010-08-05 03:37:22 +0800 | [diff] [blame] | 962 | static void mgcp_rtp_end_init(struct mgcp_rtp_end *end) |
| 963 | { |
| 964 | mgcp_rtp_end_reset(end); |
| 965 | end->rtp.fd = -1; |
| 966 | end->rtcp.fd = -1; |
| 967 | } |
| 968 | |
Holger Hans Peter Freyther | 1f0c5b4 | 2011-02-28 14:37:03 +0100 | [diff] [blame] | 969 | int mgcp_endpoints_allocate(struct mgcp_trunk_config *tcfg) |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 970 | { |
| 971 | int i; |
| 972 | |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 973 | /* Initialize all endpoints */ |
Holger Hans Peter Freyther | 1f0c5b4 | 2011-02-28 14:37:03 +0100 | [diff] [blame] | 974 | tcfg->endpoints = _talloc_zero_array(tcfg->cfg, |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 975 | sizeof(struct mgcp_endpoint), |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 976 | tcfg->number_endpoints, "endpoints"); |
| 977 | if (!tcfg->endpoints) |
Holger Hans Peter Freyther | 7bdc637 | 2010-02-20 21:21:02 +0100 | [diff] [blame] | 978 | return -1; |
| 979 | |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 980 | for (i = 0; i < tcfg->number_endpoints; ++i) { |
| 981 | tcfg->endpoints[i].ci = CI_UNUSED; |
Holger Hans Peter Freyther | 1f0c5b4 | 2011-02-28 14:37:03 +0100 | [diff] [blame] | 982 | tcfg->endpoints[i].cfg = tcfg->cfg; |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 983 | tcfg->endpoints[i].tcfg = tcfg; |
| 984 | mgcp_rtp_end_init(&tcfg->endpoints[i].net_end); |
| 985 | mgcp_rtp_end_init(&tcfg->endpoints[i].bts_end); |
| 986 | mgcp_rtp_end_init(&tcfg->endpoints[i].trans_net); |
| 987 | mgcp_rtp_end_init(&tcfg->endpoints[i].trans_bts); |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 988 | } |
| 989 | |
Holger Hans Peter Freyther | e095502 | 2010-02-03 08:50:33 +0100 | [diff] [blame] | 990 | return 0; |
| 991 | } |
Holger Hans Peter Freyther | 154b955 | 2010-02-26 13:27:51 +0100 | [diff] [blame] | 992 | |
| 993 | void mgcp_free_endp(struct mgcp_endpoint *endp) |
| 994 | { |
Holger Hans Peter Freyther | c77efdf | 2010-03-31 12:31:09 +0200 | [diff] [blame] | 995 | 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] | 996 | endp->ci = CI_UNUSED; |
Holger Hans Peter Freyther | 39a97e2 | 2010-08-06 18:03:11 +0800 | [diff] [blame] | 997 | endp->allocated = 0; |
Holger Hans Peter Freyther | 154b955 | 2010-02-26 13:27:51 +0100 | [diff] [blame] | 998 | |
| 999 | if (endp->callid) { |
| 1000 | talloc_free(endp->callid); |
| 1001 | endp->callid = NULL; |
| 1002 | } |
| 1003 | |
| 1004 | if (endp->local_options) { |
| 1005 | talloc_free(endp->local_options); |
Holger Hans Peter Freyther | 88c6eea | 2010-03-01 18:52:04 +0100 | [diff] [blame] | 1006 | endp->local_options = NULL; |
Holger Hans Peter Freyther | 154b955 | 2010-02-26 13:27:51 +0100 | [diff] [blame] | 1007 | } |
| 1008 | |
Holger Hans Peter Freyther | a17d701 | 2010-08-05 01:34:51 +0800 | [diff] [blame] | 1009 | mgcp_rtp_end_reset(&endp->bts_end); |
| 1010 | mgcp_rtp_end_reset(&endp->net_end); |
Holger Hans Peter Freyther | 2126233 | 2010-11-01 20:53:31 +0100 | [diff] [blame] | 1011 | mgcp_rtp_end_reset(&endp->trans_net); |
Holger Hans Peter Freyther | bd7b3c5 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 1012 | mgcp_rtp_end_reset(&endp->trans_bts); |
Holger Hans Peter Freyther | b54048f | 2010-11-01 19:57:50 +0100 | [diff] [blame] | 1013 | endp->is_transcoded = 0; |
Holger Hans Peter Freyther | 380b871 | 2010-07-29 02:38:39 +0800 | [diff] [blame] | 1014 | |
Holger Hans Peter Freyther | 3186892 | 2010-08-03 11:59:04 +0000 | [diff] [blame] | 1015 | memset(&endp->net_state, 0, sizeof(endp->net_state)); |
| 1016 | memset(&endp->bts_state, 0, sizeof(endp->bts_state)); |
Holger Hans Peter Freyther | c597a4e | 2010-08-03 02:57:02 +0800 | [diff] [blame] | 1017 | |
| 1018 | endp->conn_mode = endp->orig_mode = MGCP_CONN_NONE; |
Holger Hans Peter Freyther | 6357a8e | 2010-08-05 12:07:00 +0000 | [diff] [blame] | 1019 | endp->allow_patch = 0; |
Holger Hans Peter Freyther | 260d6ed | 2010-08-06 01:12:21 +0800 | [diff] [blame] | 1020 | |
| 1021 | memset(&endp->taps, 0, sizeof(endp->taps)); |
Holger Hans Peter Freyther | 154b955 | 2010-02-26 13:27:51 +0100 | [diff] [blame] | 1022 | } |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1023 | |
Holger Hans Peter Freyther | 557b1ab | 2010-09-19 04:39:55 +0800 | [diff] [blame] | 1024 | static int send_trans(struct mgcp_config *cfg, const char *buf, int len) |
| 1025 | { |
| 1026 | struct sockaddr_in addr; |
| 1027 | |
| 1028 | memset(&addr, 0, sizeof(addr)); |
| 1029 | addr.sin_family = AF_INET; |
| 1030 | addr.sin_addr = cfg->transcoder_in; |
| 1031 | addr.sin_port = htons(2427); |
| 1032 | return sendto(cfg->gw_fd.bfd.fd, buf, len, 0, |
| 1033 | (struct sockaddr *) &addr, sizeof(addr)); |
| 1034 | } |
| 1035 | |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1036 | static void send_msg(struct mgcp_endpoint *endp, int endpoint, int port, |
| 1037 | const char *msg, const char *mode) |
| 1038 | { |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1039 | char buf[2096]; |
| 1040 | int len; |
| 1041 | |
| 1042 | /* hardcoded to AMR right now, we do not know the real type at this point */ |
| 1043 | len = snprintf(buf, sizeof(buf), |
| 1044 | "%s 42 %x@mgw MGCP 1.0\r\n" |
| 1045 | "C: 4256\r\n" |
| 1046 | "M: %s\r\n" |
| 1047 | "\r\n" |
| 1048 | "c=IN IP4 %s\r\n" |
| 1049 | "m=audio %d RTP/AVP %d\r\n" |
| 1050 | "a=rtpmap:%d %s\r\n", |
| 1051 | msg, endpoint, mode, endp->cfg->source_addr, |
Holger Hans Peter Freyther | 88ad772 | 2011-02-28 00:56:17 +0100 | [diff] [blame] | 1052 | port, endp->tcfg->audio_payload, |
| 1053 | endp->tcfg->audio_payload, endp->tcfg->audio_name); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1054 | |
| 1055 | if (len < 0) |
| 1056 | return; |
| 1057 | |
| 1058 | buf[sizeof(buf) - 1] = '\0'; |
| 1059 | |
Holger Hans Peter Freyther | 557b1ab | 2010-09-19 04:39:55 +0800 | [diff] [blame] | 1060 | send_trans(endp->cfg, buf, len); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1061 | } |
| 1062 | |
| 1063 | static void send_dlcx(struct mgcp_endpoint *endp, int endpoint) |
| 1064 | { |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1065 | char buf[2096]; |
| 1066 | int len; |
| 1067 | |
| 1068 | len = snprintf(buf, sizeof(buf), |
| 1069 | "DLCX 43 %x@mgw MGCP 1.0\r\n" |
| 1070 | "C: 4256\r\n" |
| 1071 | , endpoint); |
| 1072 | |
| 1073 | if (len < 0) |
| 1074 | return; |
| 1075 | |
| 1076 | buf[sizeof(buf) - 1] = '\0'; |
| 1077 | |
Holger Hans Peter Freyther | 557b1ab | 2010-09-19 04:39:55 +0800 | [diff] [blame] | 1078 | send_trans(endp->cfg, buf, len); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1079 | } |
| 1080 | |
Harald Welte | 6a85705 | 2012-01-27 00:41:39 +0100 | [diff] [blame] | 1081 | static int send_agent(struct mgcp_config *cfg, const char *buf, int len) |
| 1082 | { |
| 1083 | return write(cfg->gw_fd.bfd.fd, buf, len); |
| 1084 | } |
| 1085 | |
| 1086 | int mgcp_send_reset_all(struct mgcp_config *cfg) |
| 1087 | { |
| 1088 | static const char mgcp_reset[] = { |
| 1089 | "RSIP 1 *@mgw MGCP 1.0\r\n" |
| 1090 | }; |
| 1091 | |
| 1092 | return send_agent(cfg, mgcp_reset, sizeof mgcp_reset -1); |
| 1093 | } |
| 1094 | |
| 1095 | int mgcp_send_reset_ep(struct mgcp_endpoint *endp, int endpoint) |
| 1096 | { |
| 1097 | char buf[128]; |
| 1098 | int len; |
| 1099 | |
| 1100 | len = snprintf(buf, sizeof(buf), |
| 1101 | "RSIP 39 %x@mgw MGCP 1.0\r\n" |
| 1102 | , endpoint); |
| 1103 | if (len < 0) |
| 1104 | return len; |
| 1105 | |
| 1106 | buf[sizeof(buf) - 1] = '\0'; |
| 1107 | |
| 1108 | return send_agent(endp->cfg, buf, len); |
| 1109 | } |
| 1110 | |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1111 | static void create_transcoder(struct mgcp_endpoint *endp) |
| 1112 | { |
| 1113 | int port; |
| 1114 | int in_endp = ENDPOINT_NUMBER(endp); |
Holger Hans Peter Freyther | bd7b3c5 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 1115 | int out_endp = endp_back_channel(in_endp); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1116 | |
Holger Hans Peter Freyther | b54048f | 2010-11-01 19:57:50 +0100 | [diff] [blame] | 1117 | if (!endp->is_transcoded) |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1118 | return; |
| 1119 | |
Holger Hans Peter Freyther | 8b19dee | 2010-11-01 22:38:25 +0100 | [diff] [blame] | 1120 | send_msg(endp, in_endp, endp->trans_bts.local_port, "CRCX", "sendrecv"); |
| 1121 | 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] | 1122 | send_msg(endp, out_endp, endp->trans_net.local_port, "CRCX", "sendrecv"); |
| 1123 | 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] | 1124 | |
Holger Hans Peter Freyther | bd7b3c5 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 1125 | port = rtp_calculate_port(in_endp, endp->cfg->transcoder_remote_base); |
| 1126 | endp->trans_bts.rtp_port = htons(port); |
| 1127 | endp->trans_bts.rtcp_port = htons(port + 1); |
| 1128 | |
Holger Hans Peter Freyther | b98ba72 | 2010-09-19 04:21:39 +0800 | [diff] [blame] | 1129 | 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] | 1130 | endp->trans_net.rtp_port = htons(port); |
| 1131 | endp->trans_net.rtcp_port = htons(port + 1); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1132 | } |
| 1133 | |
| 1134 | static void delete_transcoder(struct mgcp_endpoint *endp) |
| 1135 | { |
| 1136 | int in_endp = ENDPOINT_NUMBER(endp); |
Holger Hans Peter Freyther | bd7b3c5 | 2010-11-01 21:04:54 +0100 | [diff] [blame] | 1137 | int out_endp = endp_back_channel(in_endp); |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1138 | |
Holger Hans Peter Freyther | b54048f | 2010-11-01 19:57:50 +0100 | [diff] [blame] | 1139 | if (!endp->is_transcoded) |
Holger Hans Peter Freyther | 3b5e3c4 | 2010-09-18 06:35:29 +0800 | [diff] [blame] | 1140 | return; |
| 1141 | |
| 1142 | send_dlcx(endp, in_endp); |
| 1143 | send_dlcx(endp, out_endp); |
| 1144 | } |
Holger Hans Peter Freyther | f2eedff | 2010-09-19 04:36:07 +0800 | [diff] [blame] | 1145 | |
| 1146 | int mgcp_reset_transcoder(struct mgcp_config *cfg) |
| 1147 | { |
Holger Hans Peter Freyther | f2eedff | 2010-09-19 04:36:07 +0800 | [diff] [blame] | 1148 | if (!cfg->transcoder_ip) |
Holger Hans Peter Freyther | cf1c877 | 2010-09-24 04:41:28 +0800 | [diff] [blame] | 1149 | return 0; |
Holger Hans Peter Freyther | f2eedff | 2010-09-19 04:36:07 +0800 | [diff] [blame] | 1150 | |
| 1151 | static const char mgcp_reset[] = { |
| 1152 | "RSIP 1 13@mgw MGCP 1.0\r\n" |
| 1153 | }; |
| 1154 | |
Holger Hans Peter Freyther | 557b1ab | 2010-09-19 04:39:55 +0800 | [diff] [blame] | 1155 | return send_trans(cfg, mgcp_reset, sizeof mgcp_reset -1); |
Holger Hans Peter Freyther | f2eedff | 2010-09-19 04:36:07 +0800 | [diff] [blame] | 1156 | } |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 1157 | |
| 1158 | void mgcp_format_stats(struct mgcp_endpoint *endp, char *msg, size_t size) |
| 1159 | { |
Holger Hans Peter Freyther | cb306a6 | 2012-10-24 21:22:47 +0200 | [diff] [blame] | 1160 | uint32_t expected, jitter; |
Holger Hans Peter Freyther | 38e02c5 | 2012-10-22 18:09:35 +0200 | [diff] [blame] | 1161 | int ploss; |
| 1162 | mgcp_state_calc_loss(&endp->net_state, &endp->net_end, |
| 1163 | &expected, &ploss); |
Holger Hans Peter Freyther | cb306a6 | 2012-10-24 21:22:47 +0200 | [diff] [blame] | 1164 | jitter = mgcp_state_calc_jitter(&endp->net_state); |
Holger Hans Peter Freyther | 38e02c5 | 2012-10-22 18:09:35 +0200 | [diff] [blame] | 1165 | |
Holger Hans Peter Freyther | cb306a6 | 2012-10-24 21:22:47 +0200 | [diff] [blame] | 1166 | 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] | 1167 | endp->bts_end.packets, endp->bts_end.octets, |
Holger Hans Peter Freyther | 38e02c5 | 2012-10-22 18:09:35 +0200 | [diff] [blame] | 1168 | endp->net_end.packets, endp->net_end.octets, |
Holger Hans Peter Freyther | cb306a6 | 2012-10-24 21:22:47 +0200 | [diff] [blame] | 1169 | ploss, jitter); |
Holger Hans Peter Freyther | 0bf15a8 | 2012-09-14 17:18:12 +0200 | [diff] [blame] | 1170 | msg[size - 1] = '\0'; |
| 1171 | } |