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/*
* This code implements communication based on Miranda netlib library
*
* (c) majvan 2002-2004
*/
#include "..\yamn.h"
//--------------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------------
BOOL SSLLoaded=FALSE;
HANDLE hNetlibUser=NULL;
void __stdcall SSL_DebugLog(const char *fmt, ...)
{
char str[ 4096 ];
va_list vararg;
va_start( vararg, fmt );
int tBytes = _vsnprintf( str, sizeof(str)-1, fmt, vararg );
if ( tBytes == 0 )
return;
if ( tBytes > 0 )
str[ tBytes ] = 0;
else
str[ sizeof(str)-1 ] = 0;
CallService(MS_NETLIB_LOG, (WPARAM)hNetlibUser, (LPARAM)str);
va_end( vararg );
}
HANDLE RegisterNLClient(const char *name)
{
static NETLIBUSER nlu={0};
char desc[128];
sprintf(desc, Translate("%s connection"),name);
#ifdef DEBUG_COMM
DebugLog(CommFile,"<Register PROXY support>");
#endif
nlu.cbSize = sizeof(nlu);
nlu.flags = NUF_OUTGOING | NUF_HTTPCONNS;
nlu.szDescriptiveName=desc;
nlu.szSettingsModule=(char *)name;
hNetlibUser=(HANDLE)CallService(MS_NETLIB_REGISTERUSER,0,(LPARAM)&nlu);
#ifdef DEBUG_COMM
if (NULL==hNetlibUser)
DebugLog(CommFile,"<error></Register PROXY support>\n");
else
DebugLog(CommFile,"</Register PROXY support>\n");
#endif
return hNetlibUser;
}
//Move connection to SSL
void CNLClient::SSLify() throw(DWORD) {
#ifdef DEBUG_COMM
SSL_DebugLog("Staring SSL...");
#endif
int socket = CallService(MS_NETLIB_GETSOCKET, (WPARAM)hConnection, 0);
if (socket != INVALID_SOCKET)
{
#ifdef DEBUG_COMM
SSL_DebugLog("Staring netlib core SSL");
#endif
if (CallService(MS_NETLIB_STARTSSL, (WPARAM)hConnection, 0))
{
#ifdef DEBUG_COMM
SSL_DebugLog("Netlib core SSL started");
#endif
isTLSed = true;
SSLLoaded = TRUE;
return;
}
}
//ssl could not be created
throw NetworkError = (DWORD)ESSL_CREATESSL;
}
//Connects to the server through the sock
//if not success, exception is throwed
void CNLClient::Connect(const char* servername,const int port) throw(DWORD)
{
NETLIBOPENCONNECTION nloc;
NetworkError=SystemError=0;
isTLSed = false;
#ifdef DEBUG_COMM
DebugLog(CommFile,"<connect>\n");
#endif
try
{
nloc.cbSize=sizeof(NETLIBOPENCONNECTION);
nloc.szHost=servername;
nloc.wPort=port;
nloc.flags=0;
if (NULL==(hConnection=(HANDLE)CallService(MS_NETLIB_OPENCONNECTION,(WPARAM)hNetlibUser,(LPARAM)&nloc)))
{
SystemError=WSAGetLastError();
throw NetworkError=(DWORD)ENL_CONNECT;
}
#ifdef DEBUG_COMM
DebugLog(CommFile,"</connect>\n");
#endif
return;
}
catch(...)
{
#ifdef DEBUG_COMM
DebugLog(CommFile,"<error></connect>\n");
#endif
throw;
}
}
//Performs a simple query
// query- command to send
int CNLClient::LocalNetlib_Send(HANDLE hConn,const char *buf,int len,int flags) {
if (isTLSed)
{
#ifdef DEBUG_COMM
SSL_DebugLog("SSL send: %s", buf);
#endif
}
NETLIBBUFFER nlb={(char*)buf,len,flags};
return CallService(MS_NETLIB_SEND,(WPARAM)hConn,(LPARAM)&nlb);
}
void CNLClient::Send(const char *query) throw(DWORD)
{
unsigned int Sent;
if (NULL==query)
return;
if (hConnection==NULL)
return;
#ifdef DEBUG_COMM
DebugLog(CommFile,"<send>%s",query);
#endif
try
{
if ((SOCKET_ERROR==(Sent=LocalNetlib_Send(hConnection,query,(int)strlen(query),MSG_DUMPASTEXT))) || Sent != (unsigned int)strlen(query))
{
SystemError=WSAGetLastError();
throw NetworkError=(DWORD)ENL_SEND;
}
#ifdef DEBUG_COMM
DebugLog(CommFile,"</send>\n");
#endif
}
catch(...)
{
#ifdef DEBUG_COMM
DebugLog(CommFile,"<error></send>\n");
#endif
throw;
}
}
//Reads data from socket
// buf- buffer where to store max. buflen of received characters
// if buf is NULL, creates buffer of buflen size
// buf is NULL by default
//You need free() returned buffer, which can be allocated in this function
//if not success, exception is throwed
int CNLClient::LocalNetlib_Recv(HANDLE hConn,char *buf,int len,int flags) {
NETLIBBUFFER nlb={buf,len,flags};
int iReturn = CallService(MS_NETLIB_RECV,(WPARAM)hConn,(LPARAM)&nlb);
if (isTLSed)
{
#ifdef DEBUG_COMM
SSL_DebugLog("SSL recv: %s", buf);
#endif
}
return iReturn;
}
char* CNLClient::Recv(char *buf,int buflen) throw(DWORD)
{
#ifdef DEBUG_COMM
DebugLog(CommFile,"<reading>");
#endif
try
{
if (buf==NULL)
buf=(char *)malloc(sizeof(char)*(buflen+1));
if (buf==NULL)
throw NetworkError=(DWORD)ENL_RECVALLOC;
if (!isTLSed)
{
NETLIBSELECT nls;
memset(&nls, 0, sizeof(NETLIBSELECT));
nls.cbSize = sizeof(NETLIBSELECT);
nls.dwTimeout = 60000;
nls.hReadConns[0] = hConnection;
switch (CallService(MS_NETLIB_SELECT, 0, (LPARAM) &nls))
{
case SOCKET_ERROR:
free(buf);
SystemError=WSAGetLastError();
throw NetworkError = (DWORD) ENL_RECV;
case 0: // time out!
free(buf);
throw NetworkError = (DWORD) ENL_TIMEOUT;
}
}
ZeroMemory(buf,buflen);
if (SOCKET_ERROR==(Rcv=LocalNetlib_Recv(hConnection,buf,buflen,MSG_DUMPASTEXT)))
{
free(buf);
SystemError=WSAGetLastError();
throw NetworkError=(DWORD)ENL_RECV;
}
if (!Rcv)
{
free(buf);
SystemError=WSAGetLastError();
throw NetworkError=(DWORD)ENL_RECV;
}
#ifdef DEBUG_COMM
*(buf+Rcv)=0; //end the buffer to write it to file
DebugLog(CommFile,"%s",buf);
DebugLog(CommFile,"</reading>\n");
#endif
return(buf);
}
catch(...)
{
#ifdef DEBUG_COMM
DebugLog(CommFile,"<error></reading>\n");
#endif
throw;
}
}
//Closes netlib connection
void CNLClient::Disconnect()
{
Netlib_CloseHandle(hConnection);
hConnection=(HANDLE)NULL;
}
//Uninitializes netlib library
void UnregisterNLClient()
{
#ifdef DEBUG_COMM
DebugLog(CommFile,"<Unregister PROXY support>");
#endif
Netlib_CloseHandle(hNetlibUser);
hNetlibUser=(HANDLE)NULL;
#ifdef DEBUG_COMM
DebugLog(CommFile,"</Unregister PROXY support>\n");
#endif
}
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