#include "stdafx.h"
#include "CHttpUtil.h"

SINGLETON_IMPLEMENT(CHttpUtil)
CHttpUtil::CHttpUtil()
{
	// global init  
	curl_global_init(CURL_GLOBAL_ALL);
}


CHttpUtil::~CHttpUtil()
{
	// global release  
	curl_global_cleanup();
}
// reply of the requery  
size_t CHttpUtil::req_reply(void *ptr, size_t size, size_t nmemb, void *stream)
{
	string *str = (string*)stream;
	(*str).append((char*)ptr, size*nmemb);
	return size * nmemb;
}

// http GET  
CURLcode CHttpUtil::curl_get_req(const std::string &url, std::string &response)
{
	// init curl  
	CURL *curl = curl_easy_init();
	// res code  
	CURLcode res;
	if (curl)
	{
		// set params  
		curl_easy_setopt(curl, CURLOPT_URL, url.c_str()); // url  
		curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, false); // if want to use https  
		curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, false); // set peer and host verify false  
		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
		curl_easy_setopt(curl, CURLOPT_READFUNCTION, NULL);
		curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, req_reply);
		curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&response);
		curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);
		curl_easy_setopt(curl, CURLOPT_HEADER, 0);   // 是否返回头信息 0：不返回   1：返回
		curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 3); // set transport and time out time  
		curl_easy_setopt(curl, CURLOPT_TIMEOUT, 3);
		// start req  
		res = curl_easy_perform(curl);
	}
	// release curl  
	curl_easy_cleanup(curl);
	response = UTF8ToGBK(response);
	return res;
}

// http POST  
CURLcode CHttpUtil::curl_post_req(const string &url, const string &postParams, string &response)
{
	// init curl  
	CURL *curl = curl_easy_init();
	// res code  
	CURLcode res;
	if (curl)
	{
		// set params  
		curl_easy_setopt(curl, CURLOPT_POST, 1); // post req  
		curl_easy_setopt(curl, CURLOPT_URL, url.c_str()); // url  
		curl_easy_setopt(curl, CURLOPT_POSTFIELDS, postParams.c_str()); // params  
		curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, false); // if want to use https  
		curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, false); // set peer and host verify false  
		curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
		curl_easy_setopt(curl, CURLOPT_READFUNCTION, NULL);
		curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, req_reply);
		curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&response);
		curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);
		curl_easy_setopt(curl, CURLOPT_HEADER, 1);
		curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 3);
		curl_easy_setopt(curl, CURLOPT_TIMEOUT, 3);
		// start req  
		res = curl_easy_perform(curl);
	}
	// release curl  
	curl_easy_cleanup(curl);
	return res;
}
string  CHttpUtil::UTF8ToGBK(const std::string& strUTF8)
{
	int len = MultiByteToWideChar(CP_UTF8, 0, strUTF8.c_str(), -1, NULL, 0);
	WCHAR* wszGBK = new WCHAR[len + 1];
	memset(wszGBK, 0, len * 2 + 2);
	MultiByteToWideChar(CP_UTF8, 0, (LPCTSTR)strUTF8.c_str(), -1, wszGBK, len);

	len = WideCharToMultiByte(CP_ACP, 0, wszGBK, -1, NULL, 0, NULL, NULL);
	char *szGBK = new char[len + 1];
	memset(szGBK, 0, len + 1);
	WideCharToMultiByte(CP_ACP, 0, wszGBK, -1, szGBK, len, NULL, NULL);
	std::string strTemp(szGBK);
	delete[]szGBK;
	delete[]wszGBK;
	return strTemp;
}

string  CHttpUtil::GBKToUTF8(const std::string& strGBK)
{
	string strOutUTF8 = "";
	WCHAR * str1;
	int n = MultiByteToWideChar(CP_ACP, 0, strGBK.c_str(), -1, NULL, 0);
	str1 = new WCHAR[n];
	MultiByteToWideChar(CP_ACP, 0, strGBK.c_str(), -1, str1, n);
	n = WideCharToMultiByte(CP_UTF8, 0, str1, -1, NULL, 0, NULL, NULL);
	char * str2 = new char[n];
	WideCharToMultiByte(CP_UTF8, 0, str1, -1, str2, n, NULL, NULL);
	strOutUTF8 = str2;
	delete[]str1;
	str1 = NULL;
	delete[]str2;
	str2 = NULL;
	return strOutUTF8;
}