httpparser.h

电驴下载工具eMule0.47aVeryCD的源代码,可作分析测试也可用于P2P软件的开发研究.

*
*	Return : void ;
*
*	Note :
************************************************************************/
void httpmsg_destroy( INOUT http_message_t* msg );

/************************************************************************
*	Function :	httpmsg_find_hdr_str
*
*	Parameters :
*		IN http_message_t* msg ;	HTTP Message Object
*		IN const char* header_name ; Header name to be compared with	
*
*	Description :	Compares the header name with the header names stored 
*		in	the linked list of messages
*
*	Return : http_header_t* - Pointer to a header on success;
*			 NULL on failure														
*
*	Note :
************************************************************************/
http_header_t* httpmsg_find_hdr_str( IN http_message_t* msg,
			IN const char* header_name );

/************************************************************************
*	Function :	httpmsg_find_hdr
*
*	Parameters :
*		IN http_message_t* msg ; HTTP Message Object
*		IN int header_name_id ;	 Header Name ID to be compared with
*		OUT memptr* value ;		 Buffer to get the ouput to.
*
*	Description :	Finds header from a list, with the given 'name_id'.
*
*	Return : http_header_t*  - Pointer to a header on success;										*
*			 NULL on failure														
*
*	Note :
************************************************************************/
http_header_t* httpmsg_find_hdr( IN http_message_t* msg, 
			IN int header_name_id, OUT memptr* value );

/************************************************************************
* Function: parser_request_init											
*																		
* Parameters:															
*	OUT http_parser_t* parser ; HTTP Parser object									
*																
* Description: Initializes parser object for a request					
*																		
* Returns:																
*	 void																
************************************************************************/
void parser_request_init( OUT http_parser_t* parser );

/************************************************************************
* Function: parser_response_init										
*																		
* Parameters:															
*	OUT http_parser_t* parser	;	  HTTP Parser object
*	IN http_method_t request_method	; Request method 					
*																		
* Description: Initializes parser object for a response					
*																		
* Returns:																
*	 void																
************************************************************************/
void parser_response_init( OUT http_parser_t* parser, 
			   IN http_method_t request_method );

/************************************************************************
* Function: parser_parse												
*																		
* Parameters:															
*	INOUT http_parser_t* parser ; HTTP Parser object					
*																		
* Description: The parser function. Depending on the position of the 	
*	parser object the actual parsing function is invoked				
*																		
* Returns:																
*	 void																
************************************************************************/
parse_status_t parser_parse(INOUT http_parser_t * parser);

/************************************************************************
* Function: parser_parse_responseline									
*																		
* Parameters:															
*	INOUT http_parser_t* parser	; HTTP Parser object					
*																		
* Description: Get HTTP Method, URL location and version information.	
*																		
* Returns:																
*	PARSE_OK															
*	PARSE_SUCCESS														
*	PARSE_FAILURE														
************************************************************************/
parse_status_t parser_parse_responseline(INOUT http_parser_t *parser);

/************************************************************************
* Function: parser_parse_headers									
*																		
* Parameters:															
*	INOUT http_parser_t* parser	; HTTP Parser object										
*													
* Description: Get HTTP Method, URL location and version information.	
*																		
* Returns:																
*	PARSE_OK															
*	PARSE_SUCCESS														
*	PARSE_FAILURE														
************************************************************************/
parse_status_t parser_parse_headers(INOUT http_parser_t *parser);

/************************************************************************
* Function: parser_parse_entity											
*																		
* Parameters:															
*	INOUT http_parser_t* parser	; HTTP Parser object					
*																		
* Description: Determines method to read entity							
*																		
* Returns:																
*	 PARSE_OK															
* 	 PARSE_FAILURE														
*	 PARSE_COMPLETE	-- no more reading to do							
************************************************************************/
parse_status_t parser_parse_entity(INOUT http_parser_t *parser);

/************************************************************************
* Function: parser_get_entity_read_method								
*																		
* Parameters:															
*	INOUT http_parser_t* parser	; HTTP Parser object					
*																		
* Description: Determines method to read entity							
*																		
* Returns:																
*	 PARSE_OK															
* 	 PARSE_FAILURE														
*	 PARSE_COMPLETE	-- no more reading to do							
************************************************************************/
parse_status_t parser_get_entity_read_method( INOUT http_parser_t* parser );

/************************************************************************
* Function: parser_append												
*																		
* Parameters:															
*	INOUT http_parser_t* parser ;	HTTP Parser Object					
*	IN const char* buf	;			buffer to be appended to the parser 
*									buffer							
*	IN size_t buf_length ;			Size of the buffer												
*																		
* Description: The parser function. Depending on the position of the 	
*	parser object the actual parsing function is invoked				
*																		
* Returns:																
*	 void																
************************************************************************/
parse_status_t parser_append( INOUT http_parser_t* parser, 
				 IN const char* buf,
				 IN size_t buf_length );

/************************************************************************
* Function: matchstr													
*																		
* Parameters:															
*	IN char *str ;		 String to be matched														
*	IN size_t slen ;     Length of the string														
*	IN const char* fmt ; Pattern format												
*	...																	
*																		
* Description: Matches a variable parameter list with a string			
*	and takes actions based on the data type specified.					
*																		
* Returns:																
*   PARSE_OK															
*   PARSE_NO_MATCH -- failure to match pattern 'fmt'					
*   PARSE_FAILURE	-- 'str' is bad input							
************************************************************************/
int matchstr( IN char *str, IN size_t slen, IN const char* fmt, ... );

// ====================================================
// misc functions


/************************************************************************
* Function: raw_to_int													
*																		
* Parameters:															
*	IN memptr* raw_value ;	Buffer to be converted 					
*	IN int base ;			Base  to use for conversion
*																		
* Description: Converts raw character data to long-integer value					
*																		
* Returns:																
*	 int																
************************************************************************/
int raw_to_int( IN memptr* raw_value, int base );

/************************************************************************
* Function: raw_find_str												
*																		
* Parameters:															
*	IN memptr* raw_value ; Buffer containg the string												
*	IN const char* str ;	Substring to be found													
*																		
* Description: Find a substring from raw character string buffer					
*																		
* Returns:																
*	 int - index at which the substring is found.						
************************************************************************/
int raw_find_str( IN memptr* raw_value, IN const char* str );

/************************************************************************
* Function: method_to_str												
*																		
* Parameters:															
* IN http_method_t method ; HTTP method						
*																		
* Description: A wrapper function that maps a method id to a method		
*	nameConverts a http_method id stored in the HTTP Method				
*																		
* Returns:																
*	 const char* ptr - Ptr to the HTTP Method																							*
************************************************************************/
const char* method_to_str( IN http_method_t method );

/************************************************************************
* Function: print_http_headers											
*																		
* Parameters:															
*	http_message_t* hmsg ; HTTP Message object									
*																		
* Description:															
*																		
* Returns:																
*	 void																
************************************************************************/
void print_http_headers( IN http_message_t* hmsg );

#ifdef __cplusplus
}		// extern "C"
#endif	// __cplusplus


#endif // GENLIB_NET_HTTP_HTTPPARSER_H