289 lines
7.9 KiB
C
289 lines
7.9 KiB
C
#ifndef _GB_PROXY_H
|
|
#define _GB_PROXY_H
|
|
|
|
|
|
#include <osmocom/core/msgb.h>
|
|
|
|
#include <osmocom/gprs/gprs_ns.h>
|
|
#include <osmocom/vty/command.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <regex.h>
|
|
|
|
#define GBPROXY_INIT_VU_GEN_TX 256
|
|
|
|
struct rate_ctr_group;
|
|
struct gprs_gb_parse_context;
|
|
struct tlv_parsed;
|
|
|
|
enum gbproxy_global_ctr {
|
|
GBPROX_GLOB_CTR_INV_BVCI,
|
|
GBPROX_GLOB_CTR_INV_LAI,
|
|
GBPROX_GLOB_CTR_INV_RAI,
|
|
GBPROX_GLOB_CTR_INV_NSEI,
|
|
GBPROX_GLOB_CTR_PROTO_ERR_BSS,
|
|
GBPROX_GLOB_CTR_PROTO_ERR_SGSN,
|
|
GBPROX_GLOB_CTR_NOT_SUPPORTED_BSS,
|
|
GBPROX_GLOB_CTR_NOT_SUPPORTED_SGSN,
|
|
GBPROX_GLOB_CTR_RESTART_RESET_SGSN,
|
|
GBPROX_GLOB_CTR_TX_ERR_SGSN,
|
|
GBPROX_GLOB_CTR_OTHER_ERR,
|
|
GBPROX_GLOB_CTR_PATCH_PEER_ERR,
|
|
};
|
|
|
|
enum gbproxy_peer_ctr {
|
|
GBPROX_PEER_CTR_BLOCKED,
|
|
GBPROX_PEER_CTR_UNBLOCKED,
|
|
GBPROX_PEER_CTR_DROPPED,
|
|
GBPROX_PEER_CTR_INV_NSEI,
|
|
GBPROX_PEER_CTR_TX_ERR,
|
|
GBPROX_PEER_CTR_RAID_PATCHED_BSS,
|
|
GBPROX_PEER_CTR_RAID_PATCHED_SGSN,
|
|
GBPROX_PEER_CTR_APN_PATCHED,
|
|
GBPROX_PEER_CTR_TLLI_PATCHED_BSS,
|
|
GBPROX_PEER_CTR_TLLI_PATCHED_SGSN,
|
|
GBPROX_PEER_CTR_PTMSI_PATCHED_BSS,
|
|
GBPROX_PEER_CTR_PTMSI_PATCHED_SGSN,
|
|
GBPROX_PEER_CTR_PATCH_CRYPT_ERR,
|
|
GBPROX_PEER_CTR_PATCH_ERR,
|
|
GBPROX_PEER_CTR_ATTACH_REQS,
|
|
GBPROX_PEER_CTR_ATTACH_REJS,
|
|
GBPROX_PEER_CTR_ATTACH_ACKS,
|
|
GBPROX_PEER_CTR_ATTACH_COMPLS,
|
|
GBPROX_PEER_CTR_RA_UPD_REQS,
|
|
GBPROX_PEER_CTR_RA_UPD_REJS,
|
|
GBPROX_PEER_CTR_RA_UPD_ACKS,
|
|
GBPROX_PEER_CTR_RA_UPD_COMPLS,
|
|
GBPROX_PEER_CTR_GMM_STATUS_BSS,
|
|
GBPROX_PEER_CTR_GMM_STATUS_SGSN,
|
|
GBPROX_PEER_CTR_DETACH_REQS,
|
|
GBPROX_PEER_CTR_DETACH_ACKS,
|
|
GBPROX_PEER_CTR_PDP_ACT_REQS,
|
|
GBPROX_PEER_CTR_PDP_ACT_REJS,
|
|
GBPROX_PEER_CTR_PDP_ACT_ACKS,
|
|
GBPROX_PEER_CTR_PDP_DEACT_REQS,
|
|
GBPROX_PEER_CTR_PDP_DEACT_ACKS,
|
|
GBPROX_PEER_CTR_TLLI_UNKNOWN,
|
|
GBPROX_PEER_CTR_TLLI_CACHE_SIZE,
|
|
GBPROX_PEER_CTR_LAST,
|
|
};
|
|
|
|
enum gbproxy_keep_mode {
|
|
GBPROX_KEEP_NEVER,
|
|
GBPROX_KEEP_REATTACH,
|
|
GBPROX_KEEP_IDENTIFIED,
|
|
GBPROX_KEEP_ALWAYS,
|
|
};
|
|
|
|
enum gbproxy_match_id {
|
|
GBPROX_MATCH_PATCHING,
|
|
GBPROX_MATCH_ROUTING,
|
|
GBPROX_MATCH_LAST
|
|
};
|
|
|
|
struct gbproxy_match {
|
|
int enable;
|
|
char *re_str;
|
|
regex_t re_comp;
|
|
};
|
|
|
|
struct gbproxy_config {
|
|
/* parsed from config file */
|
|
uint16_t nsip_sgsn_nsei;
|
|
|
|
/* misc */
|
|
struct gprs_ns_inst *nsi;
|
|
|
|
/* Linked list of all Gb peers (except SGSN) */
|
|
struct llist_head bts_peers;
|
|
|
|
/* Counter */
|
|
struct rate_ctr_group *ctrg;
|
|
|
|
/* force mcc/mnc */
|
|
int core_mnc;
|
|
int core_mcc;
|
|
uint8_t* core_apn;
|
|
size_t core_apn_size;
|
|
int tlli_max_age;
|
|
int tlli_max_len;
|
|
|
|
/* Experimental config */
|
|
int patch_ptmsi;
|
|
int acquire_imsi;
|
|
int route_to_sgsn2;
|
|
uint16_t nsip_sgsn2_nsei;
|
|
enum gbproxy_keep_mode keep_link_infos;
|
|
|
|
/* IMSI checking/matching */
|
|
struct gbproxy_match matches[GBPROX_MATCH_LAST];
|
|
};
|
|
|
|
struct gbproxy_patch_state {
|
|
int local_mnc;
|
|
int local_mcc;
|
|
|
|
/* List of TLLIs for which patching is enabled */
|
|
struct llist_head logical_links;
|
|
int logical_link_count;
|
|
};
|
|
|
|
struct gbproxy_peer {
|
|
struct llist_head list;
|
|
|
|
/* point back to the config */
|
|
struct gbproxy_config *cfg;
|
|
|
|
/* NSEI of the peer entity */
|
|
uint16_t nsei;
|
|
|
|
/* BVCI used for Point-to-Point to this peer */
|
|
uint16_t bvci;
|
|
int blocked;
|
|
|
|
/* Routeing Area that this peer is part of (raw 04.08 encoding) */
|
|
uint8_t ra[6];
|
|
|
|
/* Counter */
|
|
struct rate_ctr_group *ctrg;
|
|
|
|
struct gbproxy_patch_state patch_state;
|
|
};
|
|
|
|
struct gbproxy_tlli_state {
|
|
uint32_t current;
|
|
uint32_t assigned;
|
|
int bss_validated;
|
|
int net_validated;
|
|
|
|
uint32_t ptmsi;
|
|
};
|
|
|
|
struct gbproxy_link_info {
|
|
struct llist_head list;
|
|
|
|
struct gbproxy_tlli_state tlli;
|
|
struct gbproxy_tlli_state sgsn_tlli;
|
|
uint32_t sgsn_nsei;
|
|
|
|
time_t timestamp;
|
|
uint8_t *imsi;
|
|
size_t imsi_len;
|
|
|
|
int imsi_acq_pending;
|
|
struct llist_head stored_msgs;
|
|
unsigned vu_gen_tx_bss;
|
|
|
|
int is_deregistered;
|
|
|
|
int is_matching[GBPROX_MATCH_LAST];
|
|
};
|
|
|
|
|
|
/* gb_proxy_vty .c */
|
|
|
|
int gbproxy_vty_init(void);
|
|
int gbproxy_parse_config(const char *config_file, struct gbproxy_config *cfg);
|
|
|
|
|
|
/* gb_proxy.c */
|
|
int gbproxy_init_config(struct gbproxy_config *cfg);
|
|
|
|
/* Main input function for Gb proxy */
|
|
int gbprox_rcvmsg(struct gbproxy_config *cfg, struct msgb *msg, uint16_t nsei, uint16_t ns_bvci, uint16_t nsvci);
|
|
|
|
int gbprox_signal(unsigned int subsys, unsigned int signal,
|
|
void *handler_data, void *signal_data);
|
|
|
|
/* Reset all persistent NS-VC's */
|
|
int gbprox_reset_persistent_nsvcs(struct gprs_ns_inst *nsi);
|
|
|
|
void gbprox_reset(struct gbproxy_config *cfg);
|
|
|
|
/* TLLI info handling */
|
|
void gbproxy_delete_link_infos(struct gbproxy_peer *peer);
|
|
struct gbproxy_link_info *gbproxy_update_link_state_ul(
|
|
struct gbproxy_peer *peer, time_t now,
|
|
struct gprs_gb_parse_context *parse_ctx);
|
|
struct gbproxy_link_info *gbproxy_update_link_state_dl(
|
|
struct gbproxy_peer *peer, time_t now,
|
|
struct gprs_gb_parse_context *parse_ctx);
|
|
int gbproxy_update_link_state_after(
|
|
struct gbproxy_peer *peer, struct gbproxy_link_info *link_info,
|
|
time_t now, struct gprs_gb_parse_context *parse_ctx);
|
|
int gbproxy_remove_stale_link_infos(struct gbproxy_peer *peer, time_t now);
|
|
void gbproxy_delete_link_info(struct gbproxy_peer *peer,
|
|
struct gbproxy_link_info *link_info);
|
|
void gbproxy_link_info_discard_messages(struct gbproxy_link_info *link_info);
|
|
|
|
void gbproxy_attach_link_info(struct gbproxy_peer *peer, time_t now,
|
|
struct gbproxy_link_info *link_info);
|
|
void gbproxy_update_link_info(struct gbproxy_link_info *link_info,
|
|
const uint8_t *imsi, size_t imsi_len);
|
|
void gbproxy_detach_link_info(struct gbproxy_peer *peer,
|
|
struct gbproxy_link_info *link_info);
|
|
struct gbproxy_link_info *gbproxy_link_info_alloc( struct gbproxy_peer *peer);
|
|
|
|
struct gbproxy_link_info *gbproxy_link_info_by_tlli(
|
|
struct gbproxy_peer *peer, uint32_t tlli);
|
|
struct gbproxy_link_info *gbproxy_link_info_by_imsi(
|
|
struct gbproxy_peer *peer, const uint8_t *imsi, size_t imsi_len);
|
|
struct gbproxy_link_info *gbproxy_link_info_by_any_sgsn_tlli(
|
|
struct gbproxy_peer *peer, uint32_t tlli);
|
|
struct gbproxy_link_info *gbproxy_link_info_by_sgsn_tlli(
|
|
struct gbproxy_peer *peer,
|
|
uint32_t tlli, uint32_t sgsn_nsei);
|
|
struct gbproxy_link_info *gbproxy_link_info_by_ptmsi(
|
|
struct gbproxy_peer *peer,
|
|
uint32_t ptmsi);
|
|
|
|
int gbproxy_imsi_matches(
|
|
struct gbproxy_config *cfg,
|
|
enum gbproxy_match_id match_id,
|
|
struct gbproxy_link_info *link_info);
|
|
uint32_t gbproxy_map_tlli(
|
|
uint32_t other_tlli, struct gbproxy_link_info *link_info, int to_bss);
|
|
|
|
/* needed by gb_proxy_tlli.h */
|
|
uint32_t gbproxy_make_bss_ptmsi(struct gbproxy_peer *peer, uint32_t sgsn_ptmsi);
|
|
uint32_t gbproxy_make_sgsn_tlli(
|
|
struct gbproxy_peer *peer, struct gbproxy_link_info *link_info,
|
|
uint32_t bss_tlli);
|
|
void gbproxy_reset_link(struct gbproxy_link_info *link_info);
|
|
int gbproxy_check_imsi(
|
|
struct gbproxy_match *match, const uint8_t *imsi, size_t imsi_len);
|
|
|
|
/* Message patching */
|
|
void gbproxy_patch_bssgp(
|
|
struct msgb *msg, uint8_t *bssgp, size_t bssgp_len,
|
|
struct gbproxy_peer *peer, struct gbproxy_link_info *link_info,
|
|
int *len_change, struct gprs_gb_parse_context *parse_ctx);
|
|
|
|
int gbproxy_patch_llc(
|
|
struct msgb *msg, uint8_t *llc, size_t llc_len,
|
|
struct gbproxy_peer *peer, struct gbproxy_link_info *link_info,
|
|
int *len_change, struct gprs_gb_parse_context *parse_ctx);
|
|
|
|
int gbproxy_set_patch_filter(
|
|
struct gbproxy_match *match, const char *filter, const char **err_msg);
|
|
void gbproxy_clear_patch_filter(struct gbproxy_match *match);
|
|
|
|
/* Peer handling */
|
|
struct gbproxy_peer *gbproxy_peer_by_bvci(
|
|
struct gbproxy_config *cfg, uint16_t bvci);
|
|
struct gbproxy_peer *gbproxy_peer_by_nsei(
|
|
struct gbproxy_config *cfg, uint16_t nsei);
|
|
struct gbproxy_peer *gbproxy_peer_by_rai(
|
|
struct gbproxy_config *cfg, const uint8_t *ra);
|
|
struct gbproxy_peer *gbproxy_peer_by_lai(
|
|
struct gbproxy_config *cfg, const uint8_t *la);
|
|
struct gbproxy_peer *gbproxy_peer_by_lac(
|
|
struct gbproxy_config *cfg, const uint8_t *la);
|
|
struct gbproxy_peer *gbproxy_peer_by_bssgp_tlv(
|
|
struct gbproxy_config *cfg, struct tlv_parsed *tp);
|
|
struct gbproxy_peer *gbproxy_peer_alloc(struct gbproxy_config *cfg, uint16_t bvci);
|
|
void gbproxy_peer_free(struct gbproxy_peer *peer);
|
|
int gbproxy_cleanup_peers(struct gbproxy_config *cfg, uint16_t nsei, uint16_t bvci);
|
|
|
|
#endif
|