/*
 * Mbuni - Open  Source MMS Gateway 
 * 
 * Misc. functions
 * 
 * Copyright (C) 2003 - 2005, Digital Solutions Ltd. - http://www.dsmagic.com
 *
 * Paul Bagyenda <bagyenda@dsmagic.com>
 * 
 * This program is free software, distributed under the terms of
 * the GNU General Public License, with a few exceptions granted (see LICENSE)
 */ 
#ifndef __MMS_UTIL__INCLUDED__
#define __MMS_UTIL__INCLUDED__

#include "gwlib/gwlib.h"
#include "gwlib/mime.h"

#include "config.h"
#include "mms_strings.h"
#include "mms_msg.h"


#include "mms_mmbox.h"

/* Send errors */
#define MMS_SEND_OK 0
#define MMS_SEND_ERROR_TRANSIENT -1
#define MMS_SEND_ERROR_FATAL -2

#define SEND_ERROR_STR(e) ((e) == MMS_SEND_OK ? "Sent" : (e) == MMS_SEND_ERROR_TRANSIENT ? "Retry later" : "Failed")
/* Useful headers. */
#define XMSISDN_HEADER  "X-WAP-Network-Client-MSISDN"
#define XIP_HEADER  "X-WAP-Network-Client-IP"
#define MM_NAME "Mbuni"

#define EAIF_VERSION "3.0"

/* used by mmbox and queue code -- directory stuff. */
#define _TT "0123456789abcdefghijklmnopqrstuvwxyz"
#define _TTSIZE (-1 + sizeof _TT)


/* Global variables and shared code used by all modules. */

#define MMSC_VERSION VERSION
#define MMS_NAME PACKAGE

/* Message location flags: Used to distinguish fetch-urls */
enum mms_loc_t {MMS_LOC_MMBOX = 1, MMS_LOC_MQUEUE=2};

extern int mms_load_core_settings(CfgGroup *cgrp);

extern Octstr *mms_maketransid(char *qf, Octstr *mmscname);

extern Octstr *mms_getqf_fromtransid(Octstr *transid);

extern int mms_decodefetchurl(Octstr *fetch_url, 
			      Octstr **qf, Octstr **token, int *loc);

Octstr *mms_find_sender_ip(List *request_hdrs, Octstr *ip_header, Octstr *ip, int *isv6);

extern Octstr *mms_isodate(time_t t);
void mms_lib_init(void);

/* get content type while stripping params. If any param is null, fails. */
int get_content_type(List *hdrs, Octstr **type, Octstr **params);

/* Takes a header value, returns the value proper and any parameters... */
int split_header_value(Octstr *value, Octstr **base_value, Octstr **params);
/* Returns a list of parameters as http_headers given the semi-comma delimited string.*/
List  *get_value_parameters(Octstr *params);

Octstr *make_value_parameters(List *params);

/* Where value is comma-separated, make separate header items. */
void unpack_mimeheaders(MIMEEntity *m);

/* Where element has base64 encoding, decode. */
void unbase64_mimeparts(MIMEEntity *m);

/* Where element contains binary data, encode it base64. */
void base64_mimeparts(MIMEEntity *m);

void notify_prov_server(char *cmd, char *from, char *event, char *arg);
int mms_ind_send(Octstr *prov_cmd, Octstr *to);

/* Send this message to email recipient: Returns 0 on success 1 or 2 on profile error 
 * (negate to get right one), -ve on some other error
 */
int mms_sendtoemail(Octstr *from, Octstr *to, 
		    Octstr *subject, Octstr *msgid,
		    MmsMsg *msg, int dlr, Octstr **error,
		    char *sendmail_cmd, Octstr *myhostname, 
		    int trans_msg,
		    int trans_smil, char *txt, char *html, int append_hostname);

/* log to access log. */
void mms_log(char *logmsg, Octstr *from, List *to, 
	     int msize, Octstr *msgid,
	     Octstr *acct,
	     Octstr *viaproxy,
	     char *interface, 
	     Octstr *ua, Octstr *mmboxloc);

void mms_log2(char *logmsg, Octstr *from, Octstr *to, 
	      int msize, Octstr *msgid,
	      Octstr *acct,
	      Octstr *viaproxy,
	      char *interface, 
	      Octstr *ua, Octstr *mmboxloc);

/*
 * lockfile: tries to lock a file, returns 0 if success, errno (which could be +ve) otherwise.
 * we use flock()
 */
int mm_lockfile(int fd, char *fname, int shouldblock);

/* This should be elsewhere, but it isn't, so we do it here... */
extern MIMEEntity *mime_entity_duplicate(MIMEEntity *m);

/* Returns true if the character is printable or space */
int _mms_gw_isprint(int c);

/* Special form of cfg_get which returns zero-length string when there is nothing. */
Octstr *_mms_cfg_getx(CfgGroup *grp, Octstr *item);
#endif