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#ifndef _TCAP_USER_H
#define _TCAP_USER_H
/* (C) 2010 by Harald Welte <laforge@gnumonks.org>
* (C) 2010 by On-Waves
*
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation; either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdint.h>
#include <sys/socket.h>
#include <osmocom/core/select.h>
#include <osmocom/core/write_queue.h>
#include <asn1c/OBJECT_IDENTIFIER.h>
#include <osmocom/tcap/Parameter.h>
#include <osmocom/tcap/OPERATION.h>
enum tcap_transport_entity_type {
SCXP_T_UDP, /* TCAP over UDP */
SCXP_T_SUA_SCTP, /* TCAP over SUA over SCTP */
SCXP_T_SCCP_IPA, /* TCAP over SCCP over IPA */
SCXP_T_SCCP_M3UA_SCTP, /* TCAP over SCCP over M3UA over SCTP */
};
/* One entity of the underlying network protocol */
struct tcap_transport_entity {
struct llist_head list;
/* common parts */
struct sockaddr_storage local_addr;
struct sockaddr_storage remote_addr;
/* type of underlying transport */
enum tcap_transport_entity_type type;
union {
struct {
struct osmo_wqueue write_queue;
} udp;
struct {
} sccp_ipa;
struct {
} sua_sctp;
};
};
struct tcap_obj_ident {
uint32_t arc[16];
unsigned int num_arcs;
};
struct tcap_user_info {
/* 272 bytes is the MTU of classic SS7 links */
uint8_t data[272];
uint32_t data_len;
};
extern struct tcap_transport_entity *tcap_transp_udp_create(struct sockaddr_storage *local_addr);
/* Call-back to user from other points in the stack */
/* metadata associated with a dialogue indication primitive */
struct tcap_dialg_ind {
/* Dialogue ID to which this primitive relates */
uint32_t dialg_id;
/* Reference to the user-provided TCAP transport entity */
struct tcap_transport_entity *transp_ent;
uint32_t components_present:1,
prearranged_end:1,
app_ctx_present:1,
user_info_present:1;
/* Reason/Cause in case of some error */
uint32_t reason;
/* Application Context Name as OID */
struct tcap_obj_ident app_ctx_name;
/* User information (application dialogue data) */
struct tcap_user_info user_info;
};
/* metadata associated with a component indication primitive */
struct tcap_component_ind {
/* public */
uint32_t dialg_id; /* Dialogue ID */
int8_t invoke_id; /* Invoke ID */
uint8_t op_class; /* Operation Class (1-4) */
int8_t _linked_id; /* actual storage for linked ID */
int8_t *linked_id; /* Linked ID */
struct {
int is_global:1; /* is it global (1) or local (0) */
union {
/* Global Operation (OID) */
struct tcap_obj_ident global;
/* Local Operation */
long local;
};
} operation;
struct tcap_user_info parameter;
int last_component; /* is this the last component in the msg? */
uint32_t timeout_secs; /* Timeout in seconds */
union {
struct {
int is_private:1; /* Is this a private (1) or national (0) error code? */
long err;
} error;
struct {
uint8_t problem_type;
long problem_code;
} reject;
};
};
enum tcap_primitive {
/* dialogue handling primitives */
_TCAP_PR_DIALG_BASE = 0,
TCAP_PR_TC_UNI,
TCAP_PR_TC_BEGIN,
TCAP_PR_TC_CONTINUE,
TCAP_PR_TC_END,
TCAP_PR_TC_U_ABORT,
TCAP_PR_TC_NOTICE,
/* component handling primitives */
_TCAP_PR_COMP_BASE = 10,
TCAP_PR_TC_INVOKE,
TCAP_PR_TC_RESULT_L,
TCAP_PR_TC_RESULT_NL,
TCAP_PR_TC_U_ERROR,
TCAP_PR_TC_U_REJECT,
TCAP_PR_TC_CANCEL,
TCAP_PR_TC_TIMER_RESET,
TCAP_PR_TC_L_REJECT,
TCAP_PR_TC_R_REJECT,
TCAP_PR_TC_P_ABORT,
};
/* primitive structure to pass primitives between TCAP-User and TCAP Layer */
struct tcap_prim_buf {
/* Dummy list head structure for the user. libosmo-tcap doesn't use it */
struct llist_head list;
/* private reference of the caller */
unsigned long user_ref;
unsigned long user_ref2;
/* The actual primitive number */
enum tcap_primitive prim;
union {
struct tcap_dialg_ind dialg;
struct tcap_component_ind comp;
};
};
struct scxp_entity;
const char *tcap_prim_name(enum tcap_primitive prim);
/* callbacks to application code regarding various INDICATIONs */
extern int tcap_user_ind_cb(struct tcap_prim_buf *tcpb);
/* application wants to issue a REQUEST type primitive */
extern int tcap_user_req(struct tcap_prim_buf *tcpb);
#endif /* TCAP_USER_H */
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