/**
* Copyright (C) 2008 Happy Fish / YuQing
*
* FastDFS may be copied only under the terms of the GNU General
* Public License V3, which may be found in the FastDFS source kit.
* Please visit the FastDFS Home Page http://www.csource.org/ for more detail.
**/

#ifndef _FDFS_HTTP_SHARED_H
#define _FDFS_HTTP_SHARED_H

#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "ini_file_reader.h"
#include "hash.h"

typedef struct
{
	bool disabled;
	bool anti_steal_token;

	/* if need find content type by file extension name */
	bool need_find_content_type;

	/* the web server port */
	int server_port;

	/* key is file ext name, value is content type */
	HashArray content_type_hash;

	BufferInfo anti_steal_secret_key;
	BufferInfo token_check_fail_buff;
	char default_content_type[64];
	char token_check_fail_content_type[64];
	int token_ttl;
} FDFSHTTPParams;

#ifdef __cplusplus
extern "C" {
#endif

/**
load HTTP params from conf file
params:
	pIniContext: the ini file items, return by iniLoadItems
	conf_filename: config filename
	pHTTPParams: the HTTP params
return: 0 for success, != 0 fail
**/
int fdfs_http_params_load(IniContext *pIniContext, \
		const char *conf_filename, FDFSHTTPParams *pHTTPParams);

void fdfs_http_params_destroy(FDFSHTTPParams *pParams);

/**
generate anti-steal token
params:
	secret_key: secret key buffer
	file_id: FastDFS file id
	timestamp: current timestamp, unix timestamp (seconds), 0 for never timeout
	token: return token buffer
return: 0 for success, != 0 fail
**/
int fdfs_http_gen_token(const BufferInfo *secret_key, const char *file_id, \
		const int timestamp, char *token);

/**
check anti-steal token
params:
	secret_key: secret key buffer
	file_id: FastDFS file id
	timestamp: the timestamp to generate the token, unix timestamp (seconds)
	token: token buffer
	ttl: token ttl, delta seconds
return: 0 for passed, != 0 fail
**/
int fdfs_http_check_token(const BufferInfo *secret_key, const char *file_id, \
		const int timestamp, const char *token, const int ttl);

/**
get parameter value
params:
	param_name: the parameter name to get
	params: parameter array
	param_count: param count
return: param value pointer, return NULL if not exist
**/
char *fdfs_http_get_parameter(const char *param_name, KeyValuePair *params, \
		const int param_count);


/**
get file extension name
params:
	filename: the filename
	filename_len: the length of filename
	ext_len: return the length of extension name
return: extension name, NULL for none
**/
const char *fdfs_http_get_file_extension(const char *filename, \
		const int filename_len, int *ext_len);

/**
get content type by file extension name
params:
	pHTTPParams: the HTTP params
	ext_name: the extension name 
	ext_len: the length of extension name
	content_type: return content type
	content_type_size: content type buffer size
return: 0 for success, != 0 fail
**/
int fdfs_http_get_content_type_by_extname(FDFSHTTPParams *pParams, \
	const char *ext_name, const int ext_len, \
	char *content_type, const int content_type_size);

#ifdef __cplusplus
}
#endif

#endif