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/*
Miranda NG: the free IM client for Microsoft* Windows*
Copyright (c) 2012-17 Miranda NG project (https://miranda-ng.org),
Copyright (c) 2000-12 Miranda IM project,
all portions of this codebase are copyrighted to the people
listed in contributors.txt.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "stdafx.h"
#include "netlib.h"
MIR_APP_DLL(HANDLE) Netlib_CreatePacketReceiver(HNETLIBCONN nlc, int iMaxSize)
{
if (GetNetlibHandleType(nlc) != NLH_CONNECTION || iMaxSize == 0) {
SetLastError(ERROR_INVALID_PARAMETER);
return nullptr;
}
NetlibPacketRecver *nlpr = (struct NetlibPacketRecver*)mir_calloc(sizeof(struct NetlibPacketRecver));
nlpr->handleType = NLH_PACKETRECVER;
nlpr->nlc = nlc;
nlpr->packetRecver.bufferSize = iMaxSize;
nlpr->packetRecver.buffer = (PBYTE)mir_alloc(nlpr->packetRecver.bufferSize);
nlpr->packetRecver.bytesUsed = 0;
nlpr->packetRecver.bytesAvailable = 0;
return nlpr;
}
MIR_APP_DLL(int) Netlib_GetMorePackets(HANDLE hReceiver, NETLIBPACKETRECVER *nlprParam)
{
NetlibPacketRecver *nlpr = (NetlibPacketRecver*)hReceiver;
if (GetNetlibHandleType(nlpr) != NLH_PACKETRECVER || nlprParam == nullptr || nlprParam->bytesUsed > nlpr->packetRecver.bytesAvailable) {
SetLastError(ERROR_INVALID_PARAMETER);
return SOCKET_ERROR;
}
if (Miranda_IsTerminated()) { /* HACK: Lame, break while loops of protocols that can't kill their while loops, (cough, ICQ, cough) */
SetLastError(ERROR_TIMEOUT);
return SOCKET_ERROR;
}
nlpr->packetRecver.dwTimeout = nlprParam->dwTimeout;
if (nlprParam->bytesUsed == 0) {
if (nlpr->packetRecver.bytesAvailable == nlpr->packetRecver.bufferSize) {
nlpr->packetRecver.bytesAvailable = 0;
Netlib_Logf(nlpr->nlc->nlu, "Packet recver: packet overflowed buffer, ditching");
}
}
else {
memmove(nlpr->packetRecver.buffer, nlpr->packetRecver.buffer + nlprParam->bytesUsed, nlpr->packetRecver.bytesAvailable - nlprParam->bytesUsed);
nlpr->packetRecver.bytesAvailable -= nlprParam->bytesUsed;
}
if (nlprParam->dwTimeout != INFINITE) {
if (!sslApi.pending(nlpr->nlc->hSsl) && WaitUntilReadable(nlpr->nlc->s, nlprParam->dwTimeout) <= 0) {
*nlprParam = nlpr->packetRecver;
return SOCKET_ERROR;
}
}
INT_PTR recvResult = Netlib_Recv(nlpr->nlc, (char*)nlpr->packetRecver.buffer + nlpr->packetRecver.bytesAvailable, nlpr->packetRecver.bufferSize - nlpr->packetRecver.bytesAvailable, 0);
if (recvResult > 0)
nlpr->packetRecver.bytesAvailable += recvResult;
*nlprParam = nlpr->packetRecver;
return recvResult;
}
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