Harald Welte | 323e4f6 | 2010-05-01 11:28:43 +0200 | [diff] [blame] | 1 | #ifndef _GB_PROXY_H |
| 2 | #define _GB_PROXY_H |
| 3 | |
Harald Welte | 323e4f6 | 2010-05-01 11:28:43 +0200 | [diff] [blame] | 4 | |
Pablo Neira Ayuso | dd5fff4 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 5 | #include <osmocom/core/msgb.h> |
Harald Welte | 323e4f6 | 2010-05-01 11:28:43 +0200 | [diff] [blame] | 6 | |
Harald Welte | cfb6b28 | 2012-06-16 14:59:56 +0800 | [diff] [blame] | 7 | #include <osmocom/gprs/gprs_ns.h> |
Harald Welte | bd9591f | 2010-05-19 19:45:32 +0200 | [diff] [blame] | 8 | #include <osmocom/vty/command.h> |
Harald Welte | 323e4f6 | 2010-05-01 11:28:43 +0200 | [diff] [blame] | 9 | |
Holger Hans Peter Freyther | 5e94f7f | 2014-08-04 16:27:11 +0200 | [diff] [blame] | 10 | #include <sys/types.h> |
| 11 | #include <regex.h> |
| 12 | |
Holger Hans Peter Freyther | 5eaf1a2 | 2014-08-04 11:10:09 +0200 | [diff] [blame] | 13 | struct rate_ctr_group; |
| 14 | |
Jacob Erlbeck | 0727f9a | 2014-05-28 10:59:10 +0200 | [diff] [blame] | 15 | enum gbproxy_patch_mode { |
| 16 | GBPROX_PATCH_DEFAULT, |
| 17 | GBPROX_PATCH_BSSGP, /*!< BSGGP messages only */ |
| 18 | GBPROX_PATCH_LLC_ATTACH_REQ, /*!< BSSGP and Attach Request */ |
| 19 | GBPROX_PATCH_LLC_ATTACH, /*!< BSSGP and Attach Request/Response */ |
| 20 | GBPROX_PATCH_LLC_GMM, /*!< BSSGP and all GMM msgs */ |
Jacob Erlbeck | 5620c6d | 2014-05-23 20:48:07 +0200 | [diff] [blame] | 21 | GBPROX_PATCH_LLC_GSM, /*!< BSSGP and all GMM and GSM msgs */ |
Jacob Erlbeck | 0727f9a | 2014-05-28 10:59:10 +0200 | [diff] [blame] | 22 | GBPROX_PATCH_LLC, /*!< BSSGP and all supported LLC msgs */ |
| 23 | }; |
| 24 | |
Harald Welte | 323e4f6 | 2010-05-01 11:28:43 +0200 | [diff] [blame] | 25 | struct gbproxy_config { |
| 26 | /* parsed from config file */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 27 | uint16_t nsip_sgsn_nsei; |
Harald Welte | 323e4f6 | 2010-05-01 11:28:43 +0200 | [diff] [blame] | 28 | |
| 29 | /* misc */ |
| 30 | struct gprs_ns_inst *nsi; |
Jacob Erlbeck | 2504bc4 | 2014-05-19 10:14:58 +0200 | [diff] [blame] | 31 | |
Holger Hans Peter Freyther | 5eaf1a2 | 2014-08-04 11:10:09 +0200 | [diff] [blame] | 32 | /* Linked list of all Gb peers (except SGSN) */ |
| 33 | struct llist_head bts_peers; |
| 34 | |
Holger Hans Peter Freyther | 98e753f | 2014-08-04 11:19:56 +0200 | [diff] [blame] | 35 | /* Counter */ |
| 36 | struct rate_ctr_group *ctrg; |
| 37 | |
Jacob Erlbeck | 2504bc4 | 2014-05-19 10:14:58 +0200 | [diff] [blame] | 38 | /* force mcc/mnc */ |
| 39 | int core_mnc; |
| 40 | int core_mcc; |
Jacob Erlbeck | 5620c6d | 2014-05-23 20:48:07 +0200 | [diff] [blame] | 41 | uint8_t* core_apn; |
| 42 | size_t core_apn_size; |
Jacob Erlbeck | 4303763 | 2014-06-06 18:49:23 +0200 | [diff] [blame] | 43 | char * match_re; |
Jacob Erlbeck | 0727f9a | 2014-05-28 10:59:10 +0200 | [diff] [blame] | 44 | enum gbproxy_patch_mode patch_mode; |
Jacob Erlbeck | 4303763 | 2014-06-06 18:49:23 +0200 | [diff] [blame] | 45 | int tlli_max_age; |
| 46 | int tlli_max_len; |
Jacob Erlbeck | 383c841 | 2014-08-12 16:30:30 +0200 | [diff] [blame] | 47 | int patch_ptmsi; |
Holger Hans Peter Freyther | 5e94f7f | 2014-08-04 16:27:11 +0200 | [diff] [blame] | 48 | |
| 49 | /* IMSI checking/matching */ |
| 50 | int check_imsi; |
| 51 | regex_t imsi_re_comp; |
Jacob Erlbeck | 4c47f2f | 2014-08-11 19:12:24 +0200 | [diff] [blame^] | 52 | |
| 53 | /* Used to generate identifiers */ |
| 54 | unsigned bss_ptmsi_state; |
| 55 | unsigned sgsn_tlli_state; |
Harald Welte | 323e4f6 | 2010-05-01 11:28:43 +0200 | [diff] [blame] | 56 | }; |
| 57 | |
Holger Hans Peter Freyther | d64bf22 | 2014-08-04 11:35:32 +0200 | [diff] [blame] | 58 | struct gbproxy_patch_state { |
Holger Hans Peter Freyther | 5eaf1a2 | 2014-08-04 11:10:09 +0200 | [diff] [blame] | 59 | int local_mnc; |
| 60 | int local_mcc; |
| 61 | |
| 62 | /* List of TLLIs for which patching is enabled */ |
| 63 | struct llist_head enabled_tllis; |
| 64 | int enabled_tllis_count; |
| 65 | }; |
| 66 | |
Holger Hans Peter Freyther | d64bf22 | 2014-08-04 11:35:32 +0200 | [diff] [blame] | 67 | struct gbproxy_peer { |
Holger Hans Peter Freyther | 5eaf1a2 | 2014-08-04 11:10:09 +0200 | [diff] [blame] | 68 | struct llist_head list; |
| 69 | |
Holger Hans Peter Freyther | 7d9c1df | 2014-08-04 15:42:36 +0200 | [diff] [blame] | 70 | /* point back to the config */ |
| 71 | struct gbproxy_config *cfg; |
| 72 | |
Holger Hans Peter Freyther | 5eaf1a2 | 2014-08-04 11:10:09 +0200 | [diff] [blame] | 73 | /* NSEI of the peer entity */ |
| 74 | uint16_t nsei; |
| 75 | |
| 76 | /* BVCI used for Point-to-Point to this peer */ |
| 77 | uint16_t bvci; |
| 78 | int blocked; |
| 79 | |
| 80 | /* Routeing Area that this peer is part of (raw 04.08 encoding) */ |
| 81 | uint8_t ra[6]; |
| 82 | |
| 83 | /* Counter */ |
| 84 | struct rate_ctr_group *ctrg; |
| 85 | |
Holger Hans Peter Freyther | d64bf22 | 2014-08-04 11:35:32 +0200 | [diff] [blame] | 86 | struct gbproxy_patch_state patch_state; |
Holger Hans Peter Freyther | 5eaf1a2 | 2014-08-04 11:10:09 +0200 | [diff] [blame] | 87 | }; |
| 88 | |
Jacob Erlbeck | 383c841 | 2014-08-12 16:30:30 +0200 | [diff] [blame] | 89 | struct gbproxy_tlli_state { |
| 90 | uint32_t current; |
| 91 | uint32_t assigned; |
| 92 | int bss_validated; |
| 93 | int net_validated; |
| 94 | |
| 95 | uint32_t ptmsi; |
| 96 | }; |
| 97 | |
Holger Hans Peter Freyther | d64bf22 | 2014-08-04 11:35:32 +0200 | [diff] [blame] | 98 | struct gbproxy_tlli_info { |
Holger Hans Peter Freyther | 5eaf1a2 | 2014-08-04 11:10:09 +0200 | [diff] [blame] | 99 | struct llist_head list; |
| 100 | |
Jacob Erlbeck | 383c841 | 2014-08-12 16:30:30 +0200 | [diff] [blame] | 101 | struct gbproxy_tlli_state tlli; |
| 102 | struct gbproxy_tlli_state sgsn_tlli; |
| 103 | |
Holger Hans Peter Freyther | 5eaf1a2 | 2014-08-04 11:10:09 +0200 | [diff] [blame] | 104 | time_t timestamp; |
| 105 | uint8_t *mi_data; |
| 106 | size_t mi_data_len; |
Jacob Erlbeck | 9ac42ba | 2014-08-06 18:55:15 +0200 | [diff] [blame] | 107 | |
Jacob Erlbeck | 383c841 | 2014-08-12 16:30:30 +0200 | [diff] [blame] | 108 | |
Jacob Erlbeck | 9ac42ba | 2014-08-06 18:55:15 +0200 | [diff] [blame] | 109 | int enable_patching; |
Holger Hans Peter Freyther | 5eaf1a2 | 2014-08-04 11:10:09 +0200 | [diff] [blame] | 110 | }; |
| 111 | |
| 112 | |
Harald Welte | 323e4f6 | 2010-05-01 11:28:43 +0200 | [diff] [blame] | 113 | /* gb_proxy_vty .c */ |
| 114 | |
| 115 | int gbproxy_vty_init(void); |
| 116 | int gbproxy_parse_config(const char *config_file, struct gbproxy_config *cfg); |
| 117 | |
| 118 | |
| 119 | /* gb_proxy.c */ |
Holger Hans Peter Freyther | 5eaf1a2 | 2014-08-04 11:10:09 +0200 | [diff] [blame] | 120 | int gbproxy_init_config(struct gbproxy_config *cfg); |
Harald Welte | 323e4f6 | 2010-05-01 11:28:43 +0200 | [diff] [blame] | 121 | |
| 122 | /* Main input function for Gb proxy */ |
Holger Hans Peter Freyther | 7d9c1df | 2014-08-04 15:42:36 +0200 | [diff] [blame] | 123 | int gbprox_rcvmsg(struct gbproxy_config *cfg, struct msgb *msg, uint16_t nsei, uint16_t ns_bvci, uint16_t nsvci); |
Harald Welte | 323e4f6 | 2010-05-01 11:28:43 +0200 | [diff] [blame] | 124 | |
Harald Welte | 5bb0d36 | 2010-05-11 06:34:24 +0200 | [diff] [blame] | 125 | int gbprox_signal(unsigned int subsys, unsigned int signal, |
| 126 | void *handler_data, void *signal_data); |
Harald Welte | 9ee404a | 2010-05-14 11:53:08 +0000 | [diff] [blame] | 127 | |
| 128 | /* Reset all persistent NS-VC's */ |
| 129 | int gbprox_reset_persistent_nsvcs(struct gprs_ns_inst *nsi); |
| 130 | |
Holger Hans Peter Freyther | 7d9c1df | 2014-08-04 15:42:36 +0200 | [diff] [blame] | 131 | void gbprox_reset(struct gbproxy_config *cfg); |
Jacob Erlbeck | 5620c6d | 2014-05-23 20:48:07 +0200 | [diff] [blame] | 132 | |
Holger Hans Peter Freyther | 5e94f7f | 2014-08-04 16:27:11 +0200 | [diff] [blame] | 133 | int gbprox_set_patch_filter(struct gbproxy_config *cfg, const char *filter, |
| 134 | const char **err_msg); |
Jacob Erlbeck | 581728f | 2014-08-14 08:57:04 +0200 | [diff] [blame] | 135 | void gbprox_clear_patch_filter(struct gbproxy_config *cfg); |
Holger Hans Peter Freyther | 5eaf1a2 | 2014-08-04 11:10:09 +0200 | [diff] [blame] | 136 | |
Holger Hans Peter Freyther | d64bf22 | 2014-08-04 11:35:32 +0200 | [diff] [blame] | 137 | void gbprox_delete_tlli(struct gbproxy_peer *peer, |
| 138 | struct gbproxy_tlli_info *tlli_info); |
| 139 | int gbprox_remove_stale_tllis(struct gbproxy_peer *peer, time_t now); |
Holger Hans Peter Freyther | 7d9c1df | 2014-08-04 15:42:36 +0200 | [diff] [blame] | 140 | int gbprox_cleanup_peers(struct gbproxy_config *cfg, uint16_t nsei, uint16_t bvci); |
Holger Hans Peter Freyther | 5eaf1a2 | 2014-08-04 11:10:09 +0200 | [diff] [blame] | 141 | |
Holger Hans Peter Freyther | 7d9c1df | 2014-08-04 15:42:36 +0200 | [diff] [blame] | 142 | struct gbproxy_peer *gbprox_peer_by_nsei(struct gbproxy_config *cfg, uint16_t nsei); |
Holger Hans Peter Freyther | 60fa5b9 | 2014-08-04 17:10:08 +0200 | [diff] [blame] | 143 | |
Jacob Erlbeck | 3113287 | 2014-08-11 17:26:21 +0200 | [diff] [blame] | 144 | struct gbproxy_tlli_info *gbprox_find_tlli(struct gbproxy_peer *peer, |
| 145 | uint32_t tlli); |
Holger Hans Peter Freyther | 60fa5b9 | 2014-08-04 17:10:08 +0200 | [diff] [blame] | 146 | struct gbproxy_tlli_info *gbprox_find_tlli_by_mi(struct gbproxy_peer *peer, |
Jacob Erlbeck | ccc5970 | 2014-08-07 20:18:47 +0200 | [diff] [blame] | 147 | const uint8_t *mi_data, |
| 148 | size_t mi_data_len); |
Jacob Erlbeck | 383c841 | 2014-08-12 16:30:30 +0200 | [diff] [blame] | 149 | struct gbproxy_tlli_info *gbprox_find_tlli_by_sgsn_tlli( |
| 150 | struct gbproxy_peer *peer, |
| 151 | uint32_t tlli); |
Jacob Erlbeck | ccc5970 | 2014-08-07 20:18:47 +0200 | [diff] [blame] | 152 | struct gbproxy_tlli_info *gbprox_register_tlli( |
| 153 | struct gbproxy_peer *peer, uint32_t tlli, |
| 154 | const uint8_t *imsi, size_t imsi_len, time_t now); |
Holger Hans Peter Freyther | 60fa5b9 | 2014-08-04 17:10:08 +0200 | [diff] [blame] | 155 | struct gbproxy_peer *gbproxy_peer_alloc(struct gbproxy_config *cfg, uint16_t bvci); |
| 156 | void gbproxy_peer_free(struct gbproxy_peer *peer); |
| 157 | |
Jacob Erlbeck | b679977 | 2014-08-07 10:46:29 +0200 | [diff] [blame] | 158 | int gbprox_check_imsi(struct gbproxy_peer *peer, |
| 159 | const uint8_t *imsi, size_t imsi_len); |
Harald Welte | 323e4f6 | 2010-05-01 11:28:43 +0200 | [diff] [blame] | 160 | #endif |