#ifndef HTTP_H_
#define HTTP_H_


//20160905 add http_line2region
//20191112 add http_host_parser function
//20191205 add http_line2value function

#define    HTTP_H_VERSION_4_20191205     	0
//#define    HTTP_H_VERSION_4_20191112     	0
//#define    HTTP_H_VERSION_4_20160905     	0
//#define    HTTP_H_VERSION_3_20150321     	0


#ifndef uchar
typedef unsigned char           uchar;
#endif
#ifndef int64
typedef long long               int64;
#endif
#ifndef uint8
typedef unsigned char           uint8;
#endif
#ifndef uint64
typedef unsigned long long      uint64;
#endif
#ifndef uint32
typedef unsigned int            uint32;
#endif
#ifndef uint16
typedef unsigned short          uint16;
#endif

/*interest region*/
typedef enum
{
	/*#http_special1*/
	HTTP_INTEREST_KEY_MASK=0,		
	HTTP_ALL_MASK,
	HTTP_OTHER_REGIONS_MASK,
	HTTP_STATE_MASK,
	HTTP_REQ_LINE_MASK,
	HTTP_RES_LINE_MASK,	
	HTTP_CONTENT_MASK,             
	HTTP_UNGZIP_CONTENT_MASK,
	HTTP_MESSAGE_URL_MASK,
	HTTP_URI_MASK,

	/*#http_request*/
	HTTP_HOST_MASK,	
	HTTP_REFERER_MASK,
	HTTP_USER_AGENT_MASK,
	HTTP_COOKIE_MASK,
	HTTP_PROXY_AUTHORIZATION_MASK,
	HTTP_AUTHORIZATION_MASK,
	
	/*#http_response*/	
	HTTP_LOCATION_MASK,
	HTTP_SERVER_MASK,
	HTTP_ETAG_MASK,

	/*#http_general*/	
	HTTP_DATE_MASK,
	HTTP_TRAILER_MASK,
	HTTP_TRANSFER_ENCODING_MASK,
	HTTP_VIA_MASK,
	HTTP_PRAGMA_MASK,
	HTTP_CONNECTION_MASK,

	/*#http_content*/	
	HTTP_CONT_ENCODING_MASK,
	HTTP_CONT_LANGUAGE_MASK,
	HTTP_CONT_LOCATION_MASK,	
	HTTP_CONT_DISPOSITION_MASK,
	HTTP_CONT_RANGE_MASK,
	HTTP_CONT_LENGTH_MASK,
	HTTP_CONT_TYPE_MASK,
	HTTP_CHARSET_MASK,
	HTTP_EXPIRES_MASK,
	HTTP_X_FLASH_VERSION_MASK,	
	HTTP_TRANSFER_LENGTH_MASK,

	HTTP_REGION_NUM=36,	
}interested_region_mask;
/*HTTP_REGION_NUM=36*/
#define HTTP_INTEREST_KEY				((long long)1<<HTTP_INTEREST_KEY_MASK)
#define HTTP_ALL						((long long)1<<HTTP_ALL_MASK)
#define HTTP_OTHER_REGIONS				((long long)1<<HTTP_OTHER_REGIONS_MASK)
#define HTTP_STATE						((long long)1<<HTTP_STATE_MASK)
#define HTTP_REQ_LINE					((long long)1<<HTTP_REQ_LINE_MASK)
#define HTTP_RES_LINE					((long long)1<<HTTP_RES_LINE_MASK)
#define HTTP_CONTENT					((long long)1<<HTTP_CONTENT_MASK)
#define HTTP_UNGZIP_CONTENT				((long long)1<<HTTP_UNGZIP_CONTENT_MASK)
#define HTTP_MESSAGE_URL				((long long)1<<HTTP_MESSAGE_URL_MASK)
#define HTTP_URI						((long long)1<<HTTP_URI_MASK)

#define HTTP_HOST						((long long)1<<HTTP_HOST_MASK)
#define HTTP_REFERER					((long long)1<<HTTP_REFERER_MASK)
#define HTTP_USER_AGENT					((long long)1<<HTTP_USER_AGENT_MASK)
#define HTTP_COOKIE						((long long)1<<HTTP_COOKIE_MASK)
#define HTTP_PROXY_AUTHORIZATION		((long long)1<<HTTP_PROXY_AUTHORIZATION_MASK)
#define HTTP_AUTHORIZATION				((long long)1<<HTTP_AUTHORIZATION_MASK)

#define HTTP_LOCATION					((long long)1<<HTTP_LOCATION_MASK)
#define HTTP_SERVER						((long long)1<<HTTP_SERVER_MASK)
#define HTTP_ETAG 						((long long)1<<HTTP_ETAG_MASK)

#define HTTP_DATE 						((long long)1<<HTTP_DATE_MASK)
#define HTTP_TRAILER 					((long long)1<<HTTP_TRAILER_MASK)
#define HTTP_TRANSFER_ENCODING			((long long)1<<HTTP_TRANSFER_ENCODING_MASK)
#define HTTP_VIA						((long long)1<<HTTP_VIA_MASK)
#define HTTP_PRAGMA						((long long)1<<HTTP_PRAGMA_MASK)
#define HTTP_CONNECTION 				((long long)1<<HTTP_CONNECTION_MASK)

#define HTTP_CONT_ENCODING 				((long long)1<<HTTP_CONT_ENCODING_MASK)
#define HTTP_CONT_LANGUAGE 				((long long)1<<HTTP_CONT_LANGUAGE_MASK)
#define HTTP_CONT_LOCATION 				((long long)1<<HTTP_CONT_LOCATION_MASK)
#define HTTP_CONT_RANGE 				((long long)1<<HTTP_CONT_RANGE_MASK)
#define HTTP_CONT_LENGTH 				((long long)1<<HTTP_CONT_LENGTH_MASK)
#define HTTP_CONT_TYPE 					((long long)1<<HTTP_CONT_TYPE_MASK)
#define HTTP_CONT_DISPOSITION			((long long)1<<HTTP_CONT_DISPOSITION_MASK)
#define HTTP_CHARSET 					((long long)1<<HTTP_CHARSET_MASK)
#define HTTP_EXPIRES 					((long long)1<<HTTP_EXPIRES_MASK)
#define HTTP_X_FLASH_VERSION 			((long long)1<<HTTP_X_FLASH_VERSION_MASK)
#define HTTP_TRANSFER_LENGTH 			((long long)1<<HTTP_TRANSFER_LENGTH_MASK)

/*http_state*/
#define HTTP_STATE_UNKNOWN 				0x00
#define HTTP_START_LINE					0x01 /*start line over*/
#define HTTP_REGION 					0x02 
#define HTTP_DATA_BEGIN 				0x03 /*header over*/
#define HTTP_DATA 						0x04 /*have entity*/
#define HTTP_DATA_END 					0x05

/*内容编码方式cont_encoding*/
#define HTTP_CONT_ENCOD_UNKNOWN 		0X00//初始状态
#define HTTP_CONT_ENCOD_DEFAULT 		0X01
#define HTTP_CONT_ENCOD_GZIP 			0X02
#define HTTP_CONT_ENCOD_COMPRESS 		0X03
#define HTTP_CONT_ENCOD_DEFLATE 		0X04
#define HTTP_CONT_ENCOD_OTHERS 			0X05

/*传输编码方式tran_encoding*/
#define HTTP_TRANS_ENCOD_UNKNOWN 		0X00//初始状态
#define HTTP_TRANS_ENCOD_CHUNKED 		0X01//chunked编码13
#define HTTP_TRANS_ENCOD_DEFAULT 		0X02//default
#define HTTP_TRANS_ENCOD_OTHERS 		0X03//其他状态

/*请求方法method*/
#define HTTP_METHOD_UNKNOWN				0X00//初始状态
#define HTTP_METHOD_GET 				0X01
#define HTTP_METHOD_POST 				0X02
#define HTTP_METHOD_CONNECT				0X03
#define HTTP_METHOD_HEAD				0X04
#define HTTP_METHOD_PUT					0X05
#define HTTP_METHOD_OPTIONS				0X06
#define HTTP_METHOD_DELETE				0X07
#define HTTP_METHOD_TRACE				0X08

typedef struct _cont_range_t
{
	uint64 	start;
	uint64 	end;
	uint64 	len;
}cont_range_t;

typedef struct _append_infor_t
{	
	char* 					content;   //data: origin data when ungzip;     region:all complete line when enpand region
	uint32 					contlen;
}append_infor_t;

typedef struct _field_infor_t
{
	long long 					prot_flag;      	 //当前字段flag
	void*						buf;			   //当前解析之后的字段
	void*						src_buf;		   //扩展字段指向完整行，正文指向原始正文(解压缩之前，不同的解析层自解析)
	int							buflen;		   		//当前字段长度
	int							src_buflen;	    	//当前字段长度
}field_infor_t;

typedef struct _batch_infor_t
{
	int							field_cnt;     	 	 //批处理的字段数目
	field_infor_t*				field;	     		 //字段信息，stFieldInfo
}batch_infor_t;

typedef struct http_infor_t
{	
	char*					p_url;		
	uint32 					url_len;	
	int 					http_session_seq;			
	uint64 					cont_length;			
	cont_range_t* 			cont_range;	
	
	uchar					curdir;	
	uchar 					http_state;		    
	uchar 					cont_encoding;
	uchar 					trans_encoding;  
	
	uchar					method;	
	uchar 					is_ab_uri;	
	uint16 					res_code;
	append_infor_t			append_infor;	
	batch_infor_t*			batch_infor;
}http_infor;

#ifdef __cplusplus
extern "C" {
#endif

/*
*根据完整行(key:value)获得key 和key_len
*返回值0成功；-1:失败
*_key_:_value,只返回key
*/
int http_line2region(const char *line, uint32 line_len, char** region, uint32* region_len);
/*
*根据完整行(key:value)获得value 和value_len
*返回值0成功；-1:失败
*_key_:_value,只返回value
*/
int http_line2value(const char *line, uint32 line_len, char** value, uint32* value_len);

/*
* 根据字段名称region 获得字段的proto_flag
* region : 可以是host (in pcap)，也可以是HTTP_HOST(in http.conf)
*/
long long http_region2proto_flag(const char *region, uint32 region_len);
/*
*根据proto_flag获得字段的名称
*返回值是http.conf中的字符串
*/
const char* http_proto_flag2region(long long proto_flag);
const char* http_get_method(uchar method);
char* http_url_decode(char *data,  int* data_len);

int is_absolute_uri(void* app_info);

/*
* 功能说明：
*		  对一块数据进行HTTP域名解析，判断是否是HTTP协议，并返回该buf解析后的HTTP域名  
* 参数说明:
*		  buf: 输入数据 (必须是单个HTTP连接的数据,不支持一个HTTP连接数据多次解析，也不支持buf里面有多个http连接的数据)
*		  buflen: 输入数据的长度
*		  http_dir: 输入buf的流方向，DIR_C2S or DIR_S2C
*		  host: 解析后域名内容的指针
* 返回值: 
*		  >0: 该buf是HTTP协议数据，并解析出host域名, 返回host的长度
*         0: 该buf是HTTP协议数据，但没有解析出host域名
*		  -1: 该buf不是HTTP协议数据
*测试 demo:
*         参见HTTP_Parser.c中 http_host_parser_test
*/

int http_host_parser(const char* buf, uint32 buflen, int http_dir, char** host);

/*
* 功能说明：
* 	对一块数据进行HTTP头部字段解析，判断是否是HTTP协议，并返回该buf解析后的HTTP头部字段
* 参数说明:
*	buf: 输入数据 (必须是单个HTTP连接的数据,不支持一个HTTP连接数据多次解析，也不支持buf里面有多个http连接的数据)
*	buflen: 输入数据的长度
*	http_dir: 输入buf的流方向，DIR_C2S or DIR_S2C
* 返回值result: 
*		  !=NULL: 该buf是HTTP协议数据，并解析出头部字段
*		  NULL: 该buf不是HTTP协议数据
*/
void *http_field_parser(const char* buf, uint32 buflen, int http_dir);
// return length of field_value, field_flag=(HTTP_HOST/HTTP_MESSAGE_URL/...)
int http_get_filed_result(void *result, long long field_flag, char **field_value);
void http_free_filed_result(void *result);


#ifdef __cplusplus
}
#endif

#endif