msg_translator.h

/*$Id$
 * 
 *
 * Copyright (C) 2001-2003 FhG Fokus
 *
 * This file is part of ser, a free SIP server.
 *
 * ser 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
 *
 * For a license to use the ser software under conditions
 * other than those described here, or to purchase support for this
 * software, please contact iptel.org by e-mail at the following addresses:
 *    info@iptel.org
 *
 * ser 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, write to the Free Software 
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * History:
 * --------
 * 2003-03-06  totags in outgoing replies bookmarked to enable
 *             ACK/200 tag matching
 *
 * 2003-03-01 VOICE_MAIL defs removed (jiri)
 * 2003-10-08 receive_test function-alized (jiri)
 */


#ifndef  _MSG_TRANSLATOR_H
#define _MSG_TRANSLATOR_H

#define MY_HF_SEP ": "
#define MY_HF_SEP_LEN 2

#define BRANCH_SEPARATOR '.'
#define WARNING "Warning: 392 "
#define WARNING_LEN (sizeof(WARNING)-1)
#define WARNING_PHRASE " \"Noisy feedback tells: "
#define WARNING_PHRASE_LEN (sizeof(WARNING_PHRASE)-1)

/*#define MAX_CONTENT_LEN_BUF INT2STR_MAX_LEN *//* see ut.h/int2str() */

#define BUILD_NO_LOCAL_VIA              (1<<0)
#define BUILD_NO_VIA1_UPDATE    (1<<1)
#define BUILD_NO_PATH                   (1<<2)
#define BUILD_IN_SHM                    (1<<7)

#include "parser/msg_parser.h"
#include "ip_addr.h"

/* point to some remarkable positions in a SIP message */
struct bookmark {
        str to_tag_val;
};

/* used by via_builder */
struct hostport {
        str* host;
        str* port;
};


#define set_hostport(hp, msg) \
        do{ \
                if ((msg) && ((struct sip_msg*)(msg))->set_global_address.len) \
                        (hp)->host=&(((struct sip_msg*)(msg))->set_global_address); \
                else \
                        (hp)->host=&default_global_address; \
                if ((msg) && ((struct sip_msg*)(msg))->set_global_port.len) \
                        (hp)->port=&(((struct sip_msg*)(msg))->set_global_port); \
                else \
                        (hp)->port=&default_global_port; \
        }while(0)

char * build_req_buf_from_sip_req(struct sip_msg* msg, 
                                unsigned int *returned_len, struct dest_info* send_info,
                                unsigned int mode);

char * build_res_buf_from_sip_res(struct sip_msg* msg,
                                unsigned int *returned_len);


char * build_res_buf_from_sip_req(unsigned int code,
                                str *text,
                                str *new_tag,
                                struct sip_msg* msg,
                                unsigned int *returned_len,
                                struct bookmark *bmark);
/*
char * build_res_buf_with_body_from_sip_req(    unsigned int code ,
                                char *text ,
                                char *new_tag ,
                                unsigned int new_tag_len ,
                                char *body ,
                                unsigned int body_len,
                                char *content_type,
                                unsigned int content_type_len,
                                struct sip_msg* msg,
                                unsigned int *returned_len,
                                struct bookmark *bmark);
*/
char* via_builder( unsigned int *len,
        struct dest_info* send_info,
        str *branch, str* extra_params, struct hostport *hp );

/* creates a via header honoring the protocol of the incomming socket
 * msg is an optional parameter */
char* create_via_hf( unsigned int *len,
        struct sip_msg *msg,
        struct dest_info* send_info /* where to send the reply */,
        str* branch);

int branch_builder( unsigned int hash_index, 
        /* only either parameter useful */
        unsigned int label, char * char_v,
        int branch,
        /* output value: string and actual length */
        char *branch_str, int *len );

char* id_builder(struct sip_msg* msg, unsigned int *id_len);

/* check if IP address in Via != source IP address of signaling */
int received_test( struct sip_msg *msg );

/* builds a char* buffer from message headers without body
 * first line is excluded in case of skip_first_line=1
 */
char * build_only_headers( struct sip_msg* msg, int skip_first_line,
                                unsigned int *returned_len,
                                int *error,
                                struct dest_info* send_info);

/* builds a char* buffer from message body
 * error is set -1 if the memory allocation failes
 */
char * build_body( struct sip_msg* msg,
                        unsigned int *returned_len,
                        int *error,
                        struct dest_info* send_info);

/* builds a char* buffer from SIP message including body
 * The function adjusts the Content-Length HF according
 * to body lumps in case of adjust_clen=1.
 */
char * build_all( struct sip_msg* msg, int adjust_clen,
                        unsigned int *returned_len,
                        int *error,
                        struct dest_info* send_info);

void fix_global_req_flags(str* gname, str* name);

int build_sip_msg_from_buf(struct sip_msg *msg, char *buf, int len,
                unsigned int id);
#endif