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/* Routines for generating and parsing messages */
/* (C) 2011 by Holger Hans Peter Freyther <zecke@selfish.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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/>.
*
*/
#pragma once
#include "xua_types.h"
#include <osmocom/core/linuxlist.h>
#include <osmocom/sigtran/mtp_sap.h>
#define XUA_HDR(class, type) ((struct xua_common_hdr) { .spare = 0, .msg_class = (class), .msg_type = (type) })
struct msgb;
struct osmo_sccp_addr;
struct osmo_sccp_gt;
struct xua_msg {
struct xua_common_hdr hdr;
struct osmo_mtp_transfer_param mtp;
struct llist_head headers;
};
struct xua_msg_part {
struct llist_head entry;
uint16_t tag;
uint16_t len;
uint8_t *dat;
/* TODO: keep small data in the struct for perf reasons */
};
struct xua_msg_class {
const char *name;
const struct value_string *msgt_names;
const struct value_string *iei_names;
const uint16_t *mand_ies[256];
};
struct xua_dialect {
const char *name;
uint16_t port;
uint16_t ppid;
int log_subsys;
const struct xua_msg_class *class[256];
};
struct xua_msg_event_map {
uint8_t msg_class;
uint8_t msg_type;
int event;
};
extern const struct xua_dialect xua_dialect_sua;
extern const struct xua_dialect xua_dialect_m3ua;
struct xua_msg *xua_msg_alloc(void);
void xua_msg_free(struct xua_msg *msg);
int xua_msg_add_data(struct xua_msg *msg, uint16_t tag, uint16_t len, uint8_t *dat);
struct xua_msg_part *xua_msg_find_tag(const struct xua_msg *msg, uint16_t tag);
int xua_msg_free_tag(struct xua_msg *xua, uint16_t tag);
int xua_msg_copy_part(struct xua_msg *xua_out, uint16_t tag_out,
const struct xua_msg *xua_in, uint16_t tag_in);
struct xua_msg *xua_from_msg(const int version, uint16_t len, uint8_t *data);
struct msgb *xua_to_msg(const int version, struct xua_msg *msg);
int msgb_t16l16vp_put(struct msgb *msg, uint16_t tag, uint16_t len, const uint8_t *data);
int msgb_t16l16vp_put_u32(struct msgb *msg, uint16_t tag, uint32_t val);
int xua_msg_add_u32(struct xua_msg *xua, uint16_t iei, uint32_t val);
uint32_t xua_msg_part_get_u32(struct xua_msg_part *part);
uint32_t xua_msg_get_u32(struct xua_msg *xua, uint16_t iei);
void xua_part_add_gt(struct msgb *msg, const struct osmo_sccp_gt *gt);
int xua_msg_add_sccp_addr(struct xua_msg *xua, uint16_t iei, const struct osmo_sccp_addr *addr);
const char *xua_class_msg_name(const struct xua_msg_class *xmc, uint16_t msg_type);
const char *xua_class_iei_name(const struct xua_msg_class *xmc, uint16_t iei);
char *xua_hdr_dump(struct xua_msg *xua, const struct xua_dialect *dialect);
char *xua_msg_dump(struct xua_msg *xua, const struct xua_dialect *dialect);
int xua_dialect_check_all_mand_ies(const struct xua_dialect *dialect, struct xua_msg *xua);
int xua_msg_event_map(const struct xua_msg *xua,
const struct xua_msg_event_map *maps,
unsigned int num_maps);
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