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