/*
 * Copyright (C) 2010-2011 Mamadou Diop.
 *
 * Contact: Mamadou Diop <diopmamadou(at)doubango[dot]org>
 *	
 * This file is part of Open Source Doubango Framework.
 *
 * DOUBANGO 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 3 of the License, or
 * (at your option) any later version.
 *	
 * DOUBANGO 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 DOUBANGO.
 *
 */
 
 /**@file tsip_parser_uri.c
  * @brief SIP/SIPS/TEL URI parser.
  *
  * @author Mamadou Diop <diopmamadou(at)doubango[dot]org>
  *
 
  */
 #include "tinysip/parsers/tsip_parser_uri.h"
 
 #include "tsk_string.h"
 #include "tsk_memory.h"
 #include "tsk_debug.h"
 
 /***********************************
 *	Ragel state machine.
 */
 %%{
 	machine tsip_machine_parser_uri;
 
 	# Includes
 	include tsip_machine_utils "./ragel/tsip_machine_utils.rl";
 	#include tsip_machine_userinfo;
 		
 	action tag{
 		tag_start = p;
 	}
 
 	#/* Sets URI type */
 	action is_sip { uri->scheme = tsk_strdup("sip"), uri->type = uri_sip; }
 	action is_sips { uri->scheme = tsk_strdup("sips"), uri->type = uri_sips; }
 	action is_tel { uri->scheme = tsk_strdup("tel"), uri->type = uri_tel; }
 
 	#/* Sets HOST type */
 	action is_ipv4 { uri->host_type = host_ipv4; }
 	action is_ipv6 { uri->host_type = host_ipv6; }
 	action is_hostname { uri->host_type = host_hostname; }
 
 	action parse_scheme{
 		TSK_PARSER_SET_STRING(uri->scheme);
 	}
 
 	action parse_user_name{
 		TSK_PARSER_SET_STRING(uri->user_name);
 	}
 
 	action parse_password{
 		TSK_PARSER_SET_STRING(uri->password);
 	}
 
 	action parse_host{
 		TSK_PARSER_SET_STRING(uri->host);
 	}
 
 	action parse_port{
 		TSK_PARSER_SET_INTEGER(uri->port);	
 	}
 
 	action parse_param{
 		TSK_PARSER_ADD_PARAM(uri->params);
 	}
 
 	action eob{
 	}
 
 	my_uri_parameter = (pname ( "=" pvalue )?) >tag %parse_param;
 	uri_parameters = ( ";" my_uri_parameter )*;
 
 	sip_usrinfo		:= ( ( user>tag %parse_user_name ) :> ( ':' password>tag %parse_password )? :>> '@' ) @{ fgoto main; };
 	
 	main			:= |*
 							("sip:"i>tag %is_sip | "sips:"i>tag %is_sips) @100
 							{
 								if(tsk_strcontains(te, (pe - te), "@")){
 									fgoto sip_usrinfo;
 								}
 							};
 							
 							("tel:"i %is_tel (any+)>tag %parse_user_name :> uri_parameters) @100 { };
 							
 							( (IPv6reference >is_ipv6)@89 | (IPv4address >is_ipv4)@88 | (hostname >is_hostname)@87 ) @90
 							{
 								TSK_SCANNER_SET_STRING(uri->host);
 								if(uri->host_type == host_ipv6){
 									tsk_strunquote_2(&uri->host, '[', ']');
 								}
 							};							
 
 							(":" port)@80
 							{
 								ts++;
 								TSK_SCANNER_SET_INTEGER(uri->port);
 							};
 							
 							( uri_parameters ) @70	{  };
 							(any)+ @0				{  };
 
 						
 
 					*|;
 
 	#main := ({ fcall SIP_URI; });
 
 }%%
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 /// @ingroup tsip_uri_group
 ///
 /// Creates SIP/SIPS/TEL URI from string buffer. 
 ///
 ///
 /// @param data	Pointer to a string buffer from which to create the URI object.
 /// @param	size The size of the string buffer. 
 ///
 /// @retval	@ref tsip_uri_t* object if succeed and Null otherwise.
 /// 
 /// @code
 /// tsip_uri_t* uri;
 /// if((uri = tsip_uri_parse("sip:bob@open-ims.test", strlen("sip:bob@open-ims.test")))){
 ///      printf("success");
 /// }
 /// else{
 ///      printf("error");
 /// }
 /// TSK_OBJECT_SAFE_FREE(uri);
 /// @endcode
 ///
 /// @sa @ref tsip_uri_create()
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 tsip_uri_t *tsip_uri_parse(const char *data, tsk_size_t size)
 {
 	int cs = 0;
 	const char *p = data;
 	const char *pe = p + size;
 	const char *eof = pe;
 
 	const char *ts = tsk_null, *te = tsk_null;
 	int act = 0;
 
 	tsip_uri_t *uri = tsip_uri_create(uri_unknown);
 	
 	const char *tag_start = tsk_null;
 	
 	%%write data;
 	(void)(eof);
 	(void)(void)(tsip_machine_parser_uri_first_final);
 	(void)(void)(tsip_machine_parser_uri_error);
 	(void)(void)(tsip_machine_parser_uri_en_sip_usrinfo);
 	(void)(void)(tsip_machine_parser_uri_en_main);
 	%%write init;
 	%%write exec;
 	
 	if( cs < %%{ write first_final; }%% ){
 		TSK_DEBUG_ERROR("Failed to parse SIP/SIPS/TEL URI.");
 		TSK_OBJECT_SAFE_FREE(uri);
 	}
 	
 	return uri;
 }