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/*____________________________________________________________________________
MusicBrainz -- The Internet music metadatabase
Portions Copyright (C) 2000 Relatable
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
$Id: sigclient.cpp,v 1.10 2001/09/12 21:43:19 robert Exp $
____________________________________________________________________________*/
/***************************************************************************
sigclient.cpp - description
-------------------
copyright : (C) 2000 by Relatable
written by : Isaac Richards
email : ijr@relatable.com
***************************************************************************/
#ifdef WIN32
#pragma warning(disable:4786)
#endif
#include "sigclient.h"
#include "comhttpsocket.h"
#include "sigxdr.h"
namespace SigClientVars
{
static const char cGetGUID = 'N';
static const char cDisconnect = 'E';
static const int nGUIDSize = 16;
static const int nTimeout = 15;
static const int nVersion = 3;
static const int nHeaderSize = sizeof(char) + sizeof(int);
}
using namespace std;
SigClient::SigClient()
{
m_pSocket = new MBCOMHTTPSocket;
m_nNumFailures = 0;
}
SigClient::~SigClient()
{
if (m_pSocket->IsConnected())
this->Disconnect();
if (m_pSocket != NULL)
delete m_pSocket;
}
int SigClient::GetSignature(AudioSig *sig, string &strGUID,
string strCollectionID)
{
int nConRes = this->Connect(m_strIP, m_nPort);
if (nConRes != 0)
return -1;
SigXDR converter;
int nOffSet = sizeof(char) + sizeof(int);
int nGUIDLen = strCollectionID.size() * sizeof(char) + sizeof(char);
int iSigEncodeSize = sizeof(int) + 134 * sizeof(int32) + nGUIDLen;
int nTotalSize = nOffSet + iSigEncodeSize;
char* pBuffer = new char[nTotalSize + 1];
memset(pBuffer, 0, nTotalSize);
memcpy(&pBuffer[0], &SigClientVars::cGetGUID, sizeof(char));
memcpy(&pBuffer[1], &iSigEncodeSize, sizeof(int));
memcpy(&pBuffer[nOffSet], &SigClientVars::nVersion, sizeof(int));
nOffSet += sizeof(int);
iSigEncodeSize -= (nGUIDLen + sizeof(int));
char *sigencode = converter.FromSig(sig);
memcpy(&pBuffer[nOffSet], sigencode, iSigEncodeSize);
memcpy(&pBuffer[nOffSet + iSigEncodeSize], strCollectionID.c_str(),
nGUIDLen - sizeof(char));
pBuffer[nOffSet + iSigEncodeSize + nGUIDLen - sizeof(char)] = '\0';
int nBytes = 0;
int ret = m_pSocket->Write(pBuffer, nTotalSize, &nBytes);
memset(pBuffer, 0, nTotalSize);
int iGUIDSize = 16 * sizeof(int32);
ret = m_pSocket->NBRead(pBuffer, iGUIDSize, &nBytes,
SigClientVars::nTimeout);
if ((ret != -1) && (nBytes == iGUIDSize)) {
ret = 0;
strGUID = converter.ToStrGUID(pBuffer, nBytes);
if (strGUID == "")
printf("Your MusicBrainz client library is too old to talk to\n"
"the signature server. Please go to www.musicbrainz.org\n"
"and upgrade to the latest version, or upgrade whatever\n"
"software package your are currently using.\n");
}
else {
ret = -1;
strGUID = "";
}
this->Disconnect();
delete [] pBuffer;
delete [] sigencode;
return ret;
}
int SigClient::Connect(string& strIP, int nPort)
{
if (m_nNumFailures > 5)
return -1; // server probably down.
if (m_proxyAddr.empty())
{
m_pSocket->SetProxy(NULL);
}
else {
char *proxyurl = new char[m_proxyAddr.size() + 128];
sprintf(proxyurl, "%s:%d", m_proxyAddr.c_str(), m_proxyPort);
m_pSocket->SetProxy(proxyurl);
delete [] proxyurl;
}
char *url = new char[strIP.size() + 128]; // ample space..
sprintf(url, "http://%s/cgi-bin/gateway/gateway?%d", strIP.c_str(), nPort);
//sprintf(url, "http://209.249.187.200/cgi-bin/gateway?%d", nPort);
//int nErr = m_pSocket->Connect(strIP.c_str(), nPort, SOCK_STREAM);
int nErr = m_pSocket->Connect(url);
delete [] url;
if (nErr == -1)
{
m_nNumFailures++;
return -1;
}
m_nNumFailures = 0;
return 0;
}
int SigClient::Disconnect()
{
if (m_pSocket->IsConnected())
{
char cBuffer[sizeof(char) + sizeof(int)];
memset(cBuffer, 0, sizeof(char) + sizeof(int));
cBuffer[0] = SigClientVars::cDisconnect;
int nBytes = 0;
m_pSocket->Write(cBuffer, sizeof(char) + sizeof(int),
&nBytes);
m_pSocket->Disconnect();
}
return 0;
}
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