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#include "StdAfx.h"
HNETLIBUSER CHTTPSession::g_hNetLib = nullptr;
#define ERROR_MSG LPGENW("This plugin requires a personal key. Press Yes to obtain it at the site and then enter the result in the Options dialog, otherwise this plugin will fail")
void CALLBACK waitStub()
{
if (IDYES == MessageBox(0, TranslateW(ERROR_MSG), _A2W(CURRENCYRATES_MODULE_NAME), MB_YESNOCANCEL))
Utils_OpenUrl("https://free.currencyconverterapi.com/free-api-key");
}
static int find_header(const NETLIBHTTPREQUEST* pRequest, const char* hdr)
{
for (int i = 0; i < pRequest->headersCount; ++i)
if (0 == _stricmp(pRequest->headers[i].szName, hdr))
return i;
return -1;
}
bool CHTTPSession::OpenURL(const tstring &rsURL)
{
std::string s = currencyrates_t2a(rsURL.c_str());
m_szUrl = s.c_str();
return true;
}
bool CHTTPSession::ReadResponce(tstring& rsResponce)
{
if (m_szUrl.IsEmpty())
return false;
NETLIBHTTPHEADER headers[] =
{
{ "User-Agent", NETLIB_USER_AGENT },
{ "Connection", "close" },
{ "Cache-Control", "no-cache" },
{ "Pragma", "no-cache" }
};
NETLIBHTTPREQUEST nlhr = {};
nlhr.cbSize = sizeof(nlhr);
nlhr.requestType = REQUEST_GET;
nlhr.flags = NLHRF_DUMPASTEXT | NLHRF_HTTP11 | NLHRF_REDIRECT;
nlhr.szUrl = m_szUrl.GetBuffer();
nlhr.headersCount = _countof(headers);
nlhr.headers = headers;
bool bResult = false;
NETLIBHTTPREQUEST *pReply = nullptr;
{
mir_cslock lck(m_mx);
pReply = Netlib_HttpTransaction(g_hNetLib, &nlhr);
}
if (pReply) {
if ((200 == pReply->resultCode) && (pReply->dataLength > 0)) {
CMStringA buf(pReply->pData, pReply->dataLength);
int nIndex = find_header(pReply, "Content-Type");
if ((-1 != nIndex) && (nullptr != strstr(_strlwr(pReply->headers[nIndex].szValue), "utf-8")))
rsResponce = ptrW(mir_utf8decodeW(buf));
else
rsResponce = currencyrates_a2t(buf);
bResult = true;
}
Netlib_FreeHttpRequest(pReply);
}
return bResult;
}
/////////////////////////////////////////////////////////////////////////////////////////
// module initialization
bool CHTTPSession::Init()
{
assert(nullptr == g_hNetLib);
ptrA szApiKey(g_plugin.getStringA(DB_KEY_ApiKey));
if (szApiKey == nullptr)
Miranda_WaitOnHandle(waitStub);
NETLIBUSER nlu = {};
nlu.flags = NUF_OUTGOING | NUF_HTTPCONNS | NUF_NOHTTPSOPTION | NUF_UNICODE;
nlu.szSettingsModule = CURRENCYRATES_PROTOCOL_NAME;
nlu.szDescriptiveName.w = TranslateT("CurrencyRates HTTP connections");
g_hNetLib = Netlib_RegisterUser(&nlu);
return (nullptr != g_hNetLib);
}
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