Holger Hans Peter Freyther | 6a97b8d | 2010-06-15 18:45:26 +0800 | [diff] [blame] | 1 | /* |
| 2 | * (C) 2010 by Holger Hans Peter Freyther <zecke@selfish.org> |
Holger Hans Peter Freyther | df6143a | 2010-06-15 18:46:56 +0800 | [diff] [blame] | 3 | * (C) 2010 by On-Waves |
Holger Hans Peter Freyther | 6a97b8d | 2010-06-15 18:45:26 +0800 | [diff] [blame] | 4 | * All Rights Reserved |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License along |
| 17 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | #ifndef BSC_NAT_H |
| 23 | #define BSC_NAT_H |
| 24 | |
Holger Hans Peter Freyther | f7d3335 | 2010-06-15 18:50:26 +0800 | [diff] [blame] | 25 | #include "mgcp.h" |
| 26 | |
Holger Hans Peter Freyther | 6a97b8d | 2010-06-15 18:45:26 +0800 | [diff] [blame] | 27 | #include <sys/types.h> |
Holger Hans Peter Freyther | 0b8f69d | 2010-06-15 18:45:38 +0800 | [diff] [blame] | 28 | #include <sccp/sccp_types.h> |
Holger Hans Peter Freyther | 9f8f3d0 | 2010-02-07 13:08:09 +0100 | [diff] [blame] | 29 | |
Holger Hans Peter Freyther | 6c45f2e | 2010-06-15 19:06:18 +0800 | [diff] [blame] | 30 | #include <osmocore/select.h> |
| 31 | #include <osmocore/msgb.h> |
| 32 | #include <osmocore/timer.h> |
Holger Hans Peter Freyther | ed07a3f | 2010-06-15 18:47:10 +0800 | [diff] [blame] | 33 | #include <osmocore/write_queue.h> |
Holger Hans Peter Freyther | b2c38eb | 2010-06-17 18:16:00 +0800 | [diff] [blame^] | 34 | #include <osmocore/rate_ctr.h> |
Holger Hans Peter Freyther | d470286 | 2010-04-12 12:17:09 +0200 | [diff] [blame] | 35 | #include <osmocore/statistics.h> |
Holger Hans Peter Freyther | 6a97b8d | 2010-06-15 18:45:26 +0800 | [diff] [blame] | 36 | |
Holger Hans Peter Freyther | c16cf27 | 2010-04-13 09:24:37 +0200 | [diff] [blame] | 37 | #include <regex.h> |
| 38 | |
Holger Hans Peter Freyther | 1d6fb18 | 2010-01-30 11:53:30 +0100 | [diff] [blame] | 39 | #define DIR_BSC 1 |
| 40 | #define DIR_MSC 2 |
Holger Hans Peter Freyther | 0b8f69d | 2010-06-15 18:45:38 +0800 | [diff] [blame] | 41 | |
Holger Hans Peter Freyther | d131b79 | 2010-03-31 07:30:58 +0200 | [diff] [blame] | 42 | #define NAT_IPAC_PROTO_MGCP 0xfc |
Holger Hans Peter Freyther | f7d3335 | 2010-06-15 18:50:26 +0800 | [diff] [blame] | 43 | |
Holger Hans Peter Freyther | aa69824 | 2010-06-15 18:46:19 +0800 | [diff] [blame] | 44 | struct bsc_nat; |
| 45 | |
Holger Hans Peter Freyther | 19c0a84 | 2010-05-16 02:00:40 +0800 | [diff] [blame] | 46 | enum { |
| 47 | NAT_CON_TYPE_NONE, |
| 48 | NAT_CON_TYPE_LU, |
| 49 | NAT_CON_TYPE_CM_SERV_REQ, |
| 50 | NAT_CON_TYPE_PAG_RESP, |
Holger Hans Peter Freyther | b71c23b | 2010-05-16 20:43:52 +0800 | [diff] [blame] | 51 | NAT_CON_TYPE_LOCAL_REJECT, |
Holger Hans Peter Freyther | 19c0a84 | 2010-05-16 02:00:40 +0800 | [diff] [blame] | 52 | NAT_CON_TYPE_OTHER, |
| 53 | }; |
| 54 | |
Holger Hans Peter Freyther | 0b8f69d | 2010-06-15 18:45:38 +0800 | [diff] [blame] | 55 | /* |
| 56 | * For the NAT we will need to analyze and later patch |
| 57 | * the received message. This would require us to parse |
| 58 | * the IPA and SCCP header twice. Instead of doing this |
| 59 | * we will have one analyze structure and have the patching |
| 60 | * and filter operate on the same structure. |
| 61 | */ |
| 62 | struct bsc_nat_parsed { |
| 63 | /* ip access prototype */ |
| 64 | int ipa_proto; |
| 65 | |
| 66 | /* source local reference */ |
| 67 | struct sccp_source_reference *src_local_ref; |
| 68 | |
| 69 | /* destination local reference */ |
| 70 | struct sccp_source_reference *dest_local_ref; |
| 71 | |
| 72 | /* called ssn number */ |
| 73 | int called_ssn; |
| 74 | |
| 75 | /* calling ssn number */ |
| 76 | int calling_ssn; |
| 77 | |
| 78 | /* sccp message type */ |
| 79 | int sccp_type; |
| 80 | |
| 81 | /* bssap type, e.g. 0 for BSS Management */ |
| 82 | int bssap; |
| 83 | |
| 84 | /* the gsm0808 message type */ |
| 85 | int gsm_type; |
| 86 | }; |
| 87 | |
Holger Hans Peter Freyther | 9f8f3d0 | 2010-02-07 13:08:09 +0100 | [diff] [blame] | 88 | /* |
| 89 | * Per BSC data structure |
| 90 | */ |
| 91 | struct bsc_connection { |
| 92 | struct llist_head list_entry; |
| 93 | |
| 94 | /* do we know anything about this BSC? */ |
| 95 | int authenticated; |
| 96 | |
| 97 | /* the fd we use to communicate */ |
Holger Hans Peter Freyther | ed07a3f | 2010-06-15 18:47:10 +0800 | [diff] [blame] | 98 | struct write_queue write_queue; |
Holger Hans Peter Freyther | 9a85ef3 | 2010-06-15 18:46:11 +0800 | [diff] [blame] | 99 | |
Holger Hans Peter Freyther | 47dd494 | 2010-04-06 15:11:34 +0200 | [diff] [blame] | 100 | /* the BSS associated */ |
| 101 | struct bsc_config *cfg; |
Holger Hans Peter Freyther | 9a85ef3 | 2010-06-15 18:46:11 +0800 | [diff] [blame] | 102 | |
| 103 | /* a timeout node */ |
| 104 | struct timer_list id_timeout; |
Holger Hans Peter Freyther | aa69824 | 2010-06-15 18:46:19 +0800 | [diff] [blame] | 105 | |
Holger Hans Peter Freyther | 906c15e | 2010-05-02 19:28:59 +0800 | [diff] [blame] | 106 | /* pong timeout */ |
| 107 | struct timer_list ping_timeout; |
| 108 | struct timer_list pong_timeout; |
| 109 | |
Holger Hans Peter Freyther | aa69824 | 2010-06-15 18:46:19 +0800 | [diff] [blame] | 110 | /* a back pointer */ |
| 111 | struct bsc_nat *nat; |
Holger Hans Peter Freyther | 9f8f3d0 | 2010-02-07 13:08:09 +0100 | [diff] [blame] | 112 | }; |
| 113 | |
| 114 | /* |
| 115 | * Per SCCP source local reference patch table. It needs to |
| 116 | * be updated on new SCCP connections, connection confirm and reject, |
| 117 | * and on the loss of the BSC connection. |
| 118 | */ |
| 119 | struct sccp_connections { |
| 120 | struct llist_head list_entry; |
| 121 | |
| 122 | struct bsc_connection *bsc; |
| 123 | |
| 124 | struct sccp_source_reference real_ref; |
| 125 | struct sccp_source_reference patched_ref; |
Holger Hans Peter Freyther | 16a6f70 | 2010-03-29 17:18:42 +0200 | [diff] [blame] | 126 | struct sccp_source_reference remote_ref; |
Holger Hans Peter Freyther | 4c683d1 | 2010-04-23 14:13:27 +0800 | [diff] [blame] | 127 | int has_remote_ref; |
Holger Hans Peter Freyther | 465313e | 2010-06-15 18:49:53 +0800 | [diff] [blame] | 128 | |
Holger Hans Peter Freyther | 234d312 | 2010-05-16 02:06:11 +0800 | [diff] [blame] | 129 | /* status */ |
| 130 | int con_type; |
Holger Hans Peter Freyther | c58da4b | 2010-05-16 16:36:36 +0800 | [diff] [blame] | 131 | int con_local; |
Holger Hans Peter Freyther | 234d312 | 2010-05-16 02:06:11 +0800 | [diff] [blame] | 132 | |
Holger Hans Peter Freyther | 465313e | 2010-06-15 18:49:53 +0800 | [diff] [blame] | 133 | /* GSM audio handling. That is 32 * multiplex + ts */ |
Holger Hans Peter Freyther | 959bbcf | 2010-04-22 20:12:13 +0800 | [diff] [blame] | 134 | int crcx; |
Holger Hans Peter Freyther | 465313e | 2010-06-15 18:49:53 +0800 | [diff] [blame] | 135 | int msc_timeslot; |
| 136 | int bsc_timeslot; |
Holger Hans Peter Freyther | c14e09b | 2010-06-15 18:51:49 +0800 | [diff] [blame] | 137 | |
| 138 | /* timeout handling */ |
| 139 | struct timespec creation_time; |
Holger Hans Peter Freyther | 9f8f3d0 | 2010-02-07 13:08:09 +0100 | [diff] [blame] | 140 | }; |
| 141 | |
Holger Hans Peter Freyther | 9a85ef3 | 2010-06-15 18:46:11 +0800 | [diff] [blame] | 142 | /** |
Holger Hans Peter Freyther | d470286 | 2010-04-12 12:17:09 +0200 | [diff] [blame] | 143 | * Stats per BSC |
| 144 | */ |
| 145 | struct bsc_config_stats { |
Holger Hans Peter Freyther | b2c38eb | 2010-06-17 18:16:00 +0800 | [diff] [blame^] | 146 | struct rate_ctr_group *ctrg; |
| 147 | }; |
Holger Hans Peter Freyther | d470286 | 2010-04-12 12:17:09 +0200 | [diff] [blame] | 148 | |
Holger Hans Peter Freyther | b2c38eb | 2010-06-17 18:16:00 +0800 | [diff] [blame^] | 149 | enum bsc_cfg_ctr { |
| 150 | BCFG_CTR_SCCP_CONN, |
| 151 | BCFG_CTR_SCCP_CALLS, |
| 152 | BCFG_CTR_NET_RECONN, |
Holger Hans Peter Freyther | d470286 | 2010-04-12 12:17:09 +0200 | [diff] [blame] | 153 | }; |
| 154 | |
| 155 | /** |
Holger Hans Peter Freyther | 9a85ef3 | 2010-06-15 18:46:11 +0800 | [diff] [blame] | 156 | * One BSC entry in the config |
| 157 | */ |
| 158 | struct bsc_config { |
| 159 | struct llist_head entry; |
| 160 | |
| 161 | char *token; |
| 162 | unsigned int lac; |
| 163 | int nr; |
| 164 | |
Holger Hans Peter Freyther | b606101 | 2010-05-14 22:06:28 +0800 | [diff] [blame] | 165 | char *description; |
| 166 | |
Holger Hans Peter Freyther | c16cf27 | 2010-04-13 09:24:37 +0200 | [diff] [blame] | 167 | /* imsi white and blacklist */ |
Holger Hans Peter Freyther | 8affef5 | 2010-06-01 01:03:13 +0800 | [diff] [blame] | 168 | char *acc_lst_name; |
Holger Hans Peter Freyther | c16cf27 | 2010-04-13 09:24:37 +0200 | [diff] [blame] | 169 | |
Holger Hans Peter Freyther | 62e5843 | 2010-04-21 19:05:14 +0800 | [diff] [blame] | 170 | int forbid_paging; |
| 171 | |
Holger Hans Peter Freyther | c16cf27 | 2010-04-13 09:24:37 +0200 | [diff] [blame] | 172 | /* backpointer */ |
Holger Hans Peter Freyther | 9a85ef3 | 2010-06-15 18:46:11 +0800 | [diff] [blame] | 173 | struct bsc_nat *nat; |
Holger Hans Peter Freyther | d470286 | 2010-04-12 12:17:09 +0200 | [diff] [blame] | 174 | |
| 175 | struct bsc_config_stats stats; |
Holger Hans Peter Freyther | 9a85ef3 | 2010-06-15 18:46:11 +0800 | [diff] [blame] | 176 | }; |
| 177 | |
| 178 | /** |
Holger Hans Peter Freyther | a0df82d | 2010-04-01 08:21:33 +0200 | [diff] [blame] | 179 | * BSCs point of view of endpoints |
| 180 | */ |
| 181 | struct bsc_endpoint { |
| 182 | /* the pending transaction id */ |
| 183 | char *transaction_id; |
| 184 | /* the bsc we are talking to */ |
| 185 | struct bsc_connection *bsc; |
| 186 | }; |
| 187 | |
| 188 | /** |
Holger Hans Peter Freyther | d470286 | 2010-04-12 12:17:09 +0200 | [diff] [blame] | 189 | * Statistic for the nat. |
| 190 | */ |
| 191 | struct bsc_nat_statistics { |
| 192 | struct { |
| 193 | struct counter *conn; |
| 194 | struct counter *calls; |
| 195 | } sccp; |
| 196 | |
| 197 | struct { |
| 198 | struct counter *reconn; |
| 199 | struct counter *auth_fail; |
| 200 | } bsc; |
| 201 | |
| 202 | struct { |
| 203 | struct counter *reconn; |
| 204 | } msc; |
| 205 | }; |
| 206 | |
Holger Hans Peter Freyther | 29c6703 | 2010-06-08 10:14:44 +0800 | [diff] [blame] | 207 | struct bsc_nat_acc_lst { |
Holger Hans Peter Freyther | 8affef5 | 2010-06-01 01:03:13 +0800 | [diff] [blame] | 208 | struct llist_head list; |
| 209 | |
| 210 | /* the name of the list */ |
| 211 | const char *name; |
Holger Hans Peter Freyther | d77c817 | 2010-06-08 10:53:39 +0800 | [diff] [blame] | 212 | struct llist_head fltr_list; |
| 213 | }; |
| 214 | |
| 215 | struct bsc_nat_acc_lst_entry { |
| 216 | struct llist_head list; |
Holger Hans Peter Freyther | 8affef5 | 2010-06-01 01:03:13 +0800 | [diff] [blame] | 217 | |
| 218 | /* the filter */ |
| 219 | char *imsi_allow; |
| 220 | regex_t imsi_allow_re; |
| 221 | char *imsi_deny; |
| 222 | regex_t imsi_deny_re; |
| 223 | }; |
| 224 | |
Holger Hans Peter Freyther | d470286 | 2010-04-12 12:17:09 +0200 | [diff] [blame] | 225 | /** |
Holger Hans Peter Freyther | 9a85ef3 | 2010-06-15 18:46:11 +0800 | [diff] [blame] | 226 | * the structure of the "nat" network |
| 227 | */ |
| 228 | struct bsc_nat { |
| 229 | /* active SCCP connections that need patching */ |
| 230 | struct llist_head sccp_connections; |
| 231 | |
| 232 | /* active BSC connections that need patching */ |
| 233 | struct llist_head bsc_connections; |
| 234 | |
Holger Hans Peter Freyther | 8affef5 | 2010-06-01 01:03:13 +0800 | [diff] [blame] | 235 | /* access lists */ |
| 236 | struct llist_head access_lists; |
| 237 | |
Holger Hans Peter Freyther | 9a85ef3 | 2010-06-15 18:46:11 +0800 | [diff] [blame] | 238 | /* known BSC's */ |
| 239 | struct llist_head bsc_configs; |
| 240 | int num_bsc; |
Holger Hans Peter Freyther | 078321a | 2010-05-31 10:36:35 +0800 | [diff] [blame] | 241 | int bsc_ip_tos; |
Holger Hans Peter Freyther | f7d3335 | 2010-06-15 18:50:26 +0800 | [diff] [blame] | 242 | |
| 243 | /* MGCP config */ |
| 244 | struct mgcp_config *mgcp_cfg; |
Holger Hans Peter Freyther | a7f8018 | 2010-03-31 13:02:22 +0200 | [diff] [blame] | 245 | struct write_queue mgcp_queue; |
Holger Hans Peter Freyther | 8d20065 | 2010-04-04 18:09:10 +0200 | [diff] [blame] | 246 | u_int8_t mgcp_msg[4096]; |
| 247 | int mgcp_length; |
Holger Hans Peter Freyther | a0df82d | 2010-04-01 08:21:33 +0200 | [diff] [blame] | 248 | |
Holger Hans Peter Freyther | b752761 | 2010-04-07 11:20:36 +0200 | [diff] [blame] | 249 | /* msc things */ |
Holger Hans Peter Freyther | a88742c | 2010-06-15 18:51:04 +0800 | [diff] [blame] | 250 | char *msc_ip; |
Holger Hans Peter Freyther | 8139553 | 2010-04-17 07:48:45 +0200 | [diff] [blame] | 251 | int msc_port; |
Holger Hans Peter Freyther | b752761 | 2010-04-07 11:20:36 +0200 | [diff] [blame] | 252 | int first_contact; |
Holger Hans Peter Freyther | aad82ce | 2010-05-11 19:07:39 +0800 | [diff] [blame] | 253 | struct bsc_msc_connection *msc_con; |
Holger Hans Peter Freyther | e635dab | 2010-05-15 00:14:58 +0800 | [diff] [blame] | 254 | char *token; |
Holger Hans Peter Freyther | b752761 | 2010-04-07 11:20:36 +0200 | [diff] [blame] | 255 | |
Holger Hans Peter Freyther | da35a8d | 2010-05-05 16:57:38 +0800 | [diff] [blame] | 256 | /* timeouts */ |
| 257 | int auth_timeout; |
| 258 | int ping_timeout; |
| 259 | int pong_timeout; |
| 260 | |
Holger Hans Peter Freyther | a0df82d | 2010-04-01 08:21:33 +0200 | [diff] [blame] | 261 | struct bsc_endpoint *bsc_endpoints; |
Holger Hans Peter Freyther | d470286 | 2010-04-12 12:17:09 +0200 | [diff] [blame] | 262 | |
Holger Hans Peter Freyther | c16cf27 | 2010-04-13 09:24:37 +0200 | [diff] [blame] | 263 | /* filter */ |
Holger Hans Peter Freyther | 8affef5 | 2010-06-01 01:03:13 +0800 | [diff] [blame] | 264 | char *acc_lst_name; |
Holger Hans Peter Freyther | c16cf27 | 2010-04-13 09:24:37 +0200 | [diff] [blame] | 265 | |
Holger Hans Peter Freyther | d470286 | 2010-04-12 12:17:09 +0200 | [diff] [blame] | 266 | /* statistics */ |
| 267 | struct bsc_nat_statistics stats; |
Holger Hans Peter Freyther | 9a85ef3 | 2010-06-15 18:46:11 +0800 | [diff] [blame] | 268 | }; |
| 269 | |
| 270 | /* create and init the structures */ |
| 271 | struct bsc_config *bsc_config_alloc(struct bsc_nat *nat, const char *token, unsigned int lac); |
| 272 | struct bsc_config *bsc_config_num(struct bsc_nat *nat, int num); |
Holger Hans Peter Freyther | dcf8a7d | 2010-06-15 18:48:01 +0800 | [diff] [blame] | 273 | struct bsc_nat *bsc_nat_alloc(void); |
| 274 | struct bsc_connection *bsc_connection_alloc(struct bsc_nat *nat); |
Holger Hans Peter Freyther | a88742c | 2010-06-15 18:51:04 +0800 | [diff] [blame] | 275 | void bsc_nat_set_msc_ip(struct bsc_nat *bsc, const char *ip); |
Holger Hans Peter Freyther | 9a85ef3 | 2010-06-15 18:46:11 +0800 | [diff] [blame] | 276 | |
Holger Hans Peter Freyther | 23fe7be | 2010-03-30 10:45:48 +0200 | [diff] [blame] | 277 | void sccp_connection_destroy(struct sccp_connections *); |
Holger Hans Peter Freyther | 2f9dcf0 | 2010-04-27 13:21:39 +0800 | [diff] [blame] | 278 | void bsc_close_connection(struct bsc_connection *); |
Holger Hans Peter Freyther | 9f8f3d0 | 2010-02-07 13:08:09 +0100 | [diff] [blame] | 279 | |
Holger Hans Peter Freyther | 234d312 | 2010-05-16 02:06:11 +0800 | [diff] [blame] | 280 | const char *bsc_con_type_to_string(int type); |
| 281 | |
Holger Hans Peter Freyther | 0b8f69d | 2010-06-15 18:45:38 +0800 | [diff] [blame] | 282 | /** |
| 283 | * parse the given message into the above structure |
| 284 | */ |
| 285 | struct bsc_nat_parsed *bsc_nat_parse(struct msgb *msg); |
| 286 | |
Holger Hans Peter Freyther | 6a97b8d | 2010-06-15 18:45:26 +0800 | [diff] [blame] | 287 | /** |
| 288 | * filter based on IP Access header in both directions |
| 289 | */ |
Holger Hans Peter Freyther | 1d6fb18 | 2010-01-30 11:53:30 +0100 | [diff] [blame] | 290 | int bsc_nat_filter_ipa(int direction, struct msgb *msg, struct bsc_nat_parsed *parsed); |
Holger Hans Peter Freyther | 9a85ef3 | 2010-06-15 18:46:11 +0800 | [diff] [blame] | 291 | int bsc_nat_vty_init(struct bsc_nat *nat); |
Holger Hans Peter Freyther | 979a309 | 2010-04-17 08:07:19 +0200 | [diff] [blame] | 292 | struct bsc_connection *bsc_nat_find_bsc(struct bsc_nat *nat, struct msgb *msg, int *_lac); |
Holger Hans Peter Freyther | 6a97b8d | 2010-06-15 18:45:26 +0800 | [diff] [blame] | 293 | |
Holger Hans Peter Freyther | 0ab6bab | 2010-06-15 18:47:49 +0800 | [diff] [blame] | 294 | /** |
Holger Hans Peter Freyther | b4af5c9 | 2010-05-14 03:39:56 +0800 | [diff] [blame] | 295 | * Content filtering. |
| 296 | */ |
Holger Hans Peter Freyther | 19c0a84 | 2010-05-16 02:00:40 +0800 | [diff] [blame] | 297 | int bsc_nat_filter_sccp_cr(struct bsc_connection *bsc, struct msgb *msg, |
| 298 | struct bsc_nat_parsed *, int *con_type); |
Holger Hans Peter Freyther | b4af5c9 | 2010-05-14 03:39:56 +0800 | [diff] [blame] | 299 | |
| 300 | /** |
Holger Hans Peter Freyther | 0ab6bab | 2010-06-15 18:47:49 +0800 | [diff] [blame] | 301 | * SCCP patching and handling |
| 302 | */ |
Holger Hans Peter Freyther | fa20c94 | 2010-05-16 16:51:31 +0800 | [diff] [blame] | 303 | struct sccp_connections *create_sccp_src_ref(struct bsc_connection *bsc, struct bsc_nat_parsed *parsed); |
Holger Hans Peter Freyther | 49c7fb5 | 2010-06-15 18:48:55 +0800 | [diff] [blame] | 304 | int update_sccp_src_ref(struct sccp_connections *sccp, struct bsc_nat_parsed *parsed); |
Holger Hans Peter Freyther | 0ab6bab | 2010-06-15 18:47:49 +0800 | [diff] [blame] | 305 | void remove_sccp_src_ref(struct bsc_connection *bsc, struct msgb *msg, struct bsc_nat_parsed *parsed); |
Holger Hans Peter Freyther | 49c7fb5 | 2010-06-15 18:48:55 +0800 | [diff] [blame] | 306 | struct sccp_connections *patch_sccp_src_ref_to_bsc(struct msgb *, struct bsc_nat_parsed *, struct bsc_nat *); |
Holger Hans Peter Freyther | b5513ca | 2010-04-21 18:56:12 +0800 | [diff] [blame] | 307 | struct sccp_connections *patch_sccp_src_ref_to_msc(struct msgb *, struct bsc_nat_parsed *, struct bsc_connection *); |
Holger Hans Peter Freyther | 0ab6bab | 2010-06-15 18:47:49 +0800 | [diff] [blame] | 308 | |
Holger Hans Peter Freyther | 465313e | 2010-06-15 18:49:53 +0800 | [diff] [blame] | 309 | /** |
| 310 | * MGCP/Audio handling |
| 311 | */ |
Holger Hans Peter Freyther | d131b79 | 2010-03-31 07:30:58 +0200 | [diff] [blame] | 312 | int bsc_write_mgcp(struct bsc_connection *bsc, const u_int8_t *data, unsigned int length); |
Holger Hans Peter Freyther | 465313e | 2010-06-15 18:49:53 +0800 | [diff] [blame] | 313 | int bsc_mgcp_assign(struct sccp_connections *, struct msgb *msg); |
Holger Hans Peter Freyther | 7b7eef6 | 2010-04-22 12:08:17 +0800 | [diff] [blame] | 314 | void bsc_mgcp_init(struct sccp_connections *); |
| 315 | void bsc_mgcp_dlcx(struct sccp_connections *); |
Holger Hans Peter Freyther | 241e130 | 2010-03-31 09:16:56 +0200 | [diff] [blame] | 316 | void bsc_mgcp_free_endpoints(struct bsc_nat *nat); |
Holger Hans Peter Freyther | 7b7eef6 | 2010-04-22 12:08:17 +0800 | [diff] [blame] | 317 | int bsc_mgcp_nat_init(struct bsc_nat *nat); |
Holger Hans Peter Freyther | 465313e | 2010-06-15 18:49:53 +0800 | [diff] [blame] | 318 | |
Holger Hans Peter Freyther | 08a1b16 | 2010-04-18 02:26:16 +0800 | [diff] [blame] | 319 | struct sccp_connections *bsc_mgcp_find_con(struct bsc_nat *, int endpoint_number); |
Holger Hans Peter Freyther | 8d20065 | 2010-04-04 18:09:10 +0200 | [diff] [blame] | 320 | struct msgb *bsc_mgcp_rewrite(char *input, int length, const char *ip, int port); |
Holger Hans Peter Freyther | 3c3bce1 | 2010-04-01 10:16:28 +0200 | [diff] [blame] | 321 | void bsc_mgcp_forward(struct bsc_connection *bsc, struct msgb *msg); |
| 322 | |
Holger Hans Peter Freyther | 26a4389 | 2010-04-05 23:09:27 +0200 | [diff] [blame] | 323 | void bsc_mgcp_clear_endpoints_for(struct bsc_connection *bsc); |
Holger Hans Peter Freyther | 3c3bce1 | 2010-04-01 10:16:28 +0200 | [diff] [blame] | 324 | int bsc_mgcp_parse_response(const char *str, int *code, char transaction[60]); |
| 325 | int bsc_mgcp_extract_ci(const char *resp); |
Holger Hans Peter Freyther | fc9bd23 | 2010-04-01 03:55:27 +0200 | [diff] [blame] | 326 | |
Holger Hans Peter Freyther | 2896df7 | 2010-04-08 10:24:57 +0200 | [diff] [blame] | 327 | |
| 328 | int bsc_write(struct bsc_connection *bsc, struct msgb *msg, int id); |
| 329 | |
Holger Hans Peter Freyther | 8affef5 | 2010-06-01 01:03:13 +0800 | [diff] [blame] | 330 | /* IMSI allow/deny handling */ |
Holger Hans Peter Freyther | 12dc89a | 2010-05-14 18:38:29 +0800 | [diff] [blame] | 331 | void bsc_parse_reg(void *ctx, regex_t *reg, char **imsi, int argc, const char **argv); |
Holger Hans Peter Freyther | 29c6703 | 2010-06-08 10:14:44 +0800 | [diff] [blame] | 332 | struct bsc_nat_acc_lst *bsc_nat_acc_lst_find(struct bsc_nat *nat, const char *name); |
| 333 | struct bsc_nat_acc_lst *bsc_nat_acc_lst_get(struct bsc_nat *nat, const char *name); |
| 334 | void bsc_nat_acc_lst_delete(struct bsc_nat_acc_lst *lst); |
Holger Hans Peter Freyther | 12dc89a | 2010-05-14 18:38:29 +0800 | [diff] [blame] | 335 | |
Holger Hans Peter Freyther | d77c817 | 2010-06-08 10:53:39 +0800 | [diff] [blame] | 336 | struct bsc_nat_acc_lst_entry *bsc_nat_acc_lst_entry_create(struct bsc_nat_acc_lst *); |
| 337 | |
Holger Hans Peter Freyther | 6a97b8d | 2010-06-15 18:45:26 +0800 | [diff] [blame] | 338 | #endif |