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/*
Plugin of Miranda IM for communicating with users of the MSN Messenger protocol.
Copyright (c) 2006-2012 Boris Krasnovskiy.
Copyright (c) 2003-2005 George Hazan.
Copyright (c) 2002-2003 Richard Hughes (original version).
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, see <http://www.gnu.org/licenses/>.
*/
#include "msn_global.h"
#include "msn_proto.h"
static ThreadData* FindThreadConn(HANDLE hConn)
{
ThreadData* res = NULL;
for (int i = 0; i < g_Instances.getCount() && res == NULL; ++i)
res = g_Instances[i].MSN_GetThreadByConnection(hConn);
return res;
}
//=======================================================================================
// Fake function - it does nothing but confirms successful session initialization
//=======================================================================================
int msn_httpGatewayInit(HANDLE hConn, NETLIBOPENCONNECTION* nloc, NETLIBHTTPREQUEST* nlhr)
{
NETLIBHTTPPROXYINFO nlhpi = {0};
nlhpi.cbSize = sizeof(nlhpi);
nlhpi.szHttpGetUrl = NULL;
nlhpi.szHttpPostUrl = "messenger.hotmail.com";
nlhpi.flags = NLHPIF_HTTP11;
nlhpi.combinePackets = MSN_PACKETS_COMBINE;
return MSN_CallService(MS_NETLIB_SETHTTPPROXYINFO, (WPARAM)hConn, (LPARAM)&nlhpi);
}
//=======================================================================================
// Prepares the szHttpPostUrl. If it's the very first send (mSessionID is void), this
// function generates the initial URL depending on a thread type
//=======================================================================================
int msn_httpGatewayWrapSend(HANDLE hConn, PBYTE buf, int len, int flags, MIRANDASERVICE pfnNetlibSend)
{
ThreadData* T = FindThreadConn(hConn);
if (T != NULL)
{
if (T->sessionClosed)
return SOCKET_ERROR;
T->applyGatewayData(hConn, len == 0);
}
NETLIBBUFFER tBuf = { (char*)buf, len, flags };
return pfnNetlibSend((LPARAM)hConn, WPARAM(&tBuf));
}
//=======================================================================================
// Processes the results of the command execution. Parses HTTP headers to get the next
// SessionID & gateway IP values
//=======================================================================================
PBYTE msn_httpGatewayUnwrapRecv(NETLIBHTTPREQUEST* nlhr, PBYTE buf, int len, int *outBufLen, void *(*NetlibRealloc)(void *, size_t))
{
*outBufLen = len;
ThreadData* T = FindThreadConn(nlhr->nlc);
if (T == NULL) return buf;
bool isSessionClosed = true;
bool isMsnPacket = false;
if (nlhr->resultCode == 200)
{
char *xMsgr = NULL, *xHost = NULL;
for (int i=0; i < nlhr->headersCount; i++)
{
NETLIBHTTPHEADER& tHeader = nlhr->headers[i];
if (_stricmp(tHeader.szName, "X-MSN-Messenger") == 0)
xMsgr = tHeader.szValue;
else if (_stricmp(tHeader.szName, "X-MSN-Host") == 0)
xHost = tHeader.szValue;
}
if (xMsgr)
{
isMsnPacket = true;
if (strstr(xMsgr, "Session=close") == 0)
isSessionClosed = false;
T->processSessionData(xMsgr, xHost);
T->applyGatewayData(nlhr->nlc, false);
}
}
T->sessionClosed |= isSessionClosed;
if (isSessionClosed && buf == NULL)
{
*outBufLen = 0;
buf = (PBYTE)mir_alloc(1);
*buf = 0;
}
else if (buf == NULL && len == 0)
{
*outBufLen = 1;
buf = (PBYTE)mir_alloc(1);
*buf = 0;
}
else if (!isMsnPacket)
{
*outBufLen = 0;
*buf = 0;
}
return buf;
}
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