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// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of the Andrey N. Sabelnikov nor the
// names of its contributors may be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
#include "md5.h"
namespace epee
{
namespace net_utils
{
namespace smtp
{
//////////////////////////////////////////////////////////////////////////
inline char * convert_hex( unsigned char *in, int len )
{
static char hex[] = "0123456789abcdef";
char * out;
int i;
out = (char *) malloc(len * 2 + 1);
if (out == NULL)
return NULL;
for (i = 0; i < len; i++) {
out[i * 2] = hex[in[i] >> 4];
out[i * 2 + 1] = hex[in[i] & 15];
}
out[i*2] = 0;
return out;
}
//////////////////////////////////////////////////////////////////////////
inline char * hash_md5(const char * sec_key, const char * data, int len)
{
char key[65], digest[24];
char * hash_hex;
int sec_len, i;
sec_len = strlen(sec_key);
if (sec_len < 64) {
memcpy(key, sec_key, sec_len);
for (i = sec_len; i < 64; i++) {
key[i] = 0;
}
} else {
memcpy(key, sec_key, 64);
}
md5::hmac_md5( (const unsigned char*)data, len, (const unsigned char*)key, 64, (unsigned char*)digest );
hash_hex = convert_hex( (unsigned char*)digest, 16 );
return hash_hex;
}
//////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
inline CSMTPClient::CSMTPClient(void)
{
m_dwSupportedAuthModesCount = 0;
m_bConnected = FALSE;
m_hSocket = INVALID_SOCKET;
m_pErrorText = NULL;
// Initialize WinSock
WORD wVer = MAKEWORD( 2, 2 );
if ( WSAStartup( wVer, &m_wsaData ) != NO_ERROR )
{
SetErrorText( "WSAStartup.", WSAGetLastError() );
throw;
}
if ( LOBYTE( m_wsaData.wVersion ) != 2 || HIBYTE( m_wsaData.wVersion ) != 2 )
{
SetErrorText( "Can't find a useable WinSock DLL." );
WSACleanup();
throw;
}
}
//////////////////////////////////////////////////////////////////////////
inline CSMTPClient::~CSMTPClient(void)
{
if ( m_pErrorText )
{
free( m_pErrorText );
m_pErrorText = NULL;
}
if ( m_bConnected )
ServerDisconnect();
// Cleanup
WSACleanup();
}
//////////////////////////////////////////////////////////////////////////
inline void CSMTPClient::SetErrorText( LPCSTR szErrorText, DWORD dwErrorCode )
{
if ( m_pErrorText )
{
free( m_pErrorText );
m_pErrorText = NULL;
}
LPVOID lpMsgBuf = NULL;
if ( dwErrorCode )
{
FormatMessageA(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM,
NULL,
dwErrorCode,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPSTR) &lpMsgBuf,
0, NULL );
}
if ( szErrorText && strlen( szErrorText ) )
{
m_pErrorText = (LPBYTE)malloc( strlen( szErrorText ) + 1 );
strcpy( (char*)m_pErrorText, szErrorText );
if ( lpMsgBuf )
{
strcat( (char*)m_pErrorText, " " );
strcpy( (char*)m_pErrorText, (char*)lpMsgBuf );
LocalFree( lpMsgBuf );
}
}
}
inline void CSMTPClient::SetErrorText( PBYTE szErrorText, DWORD dwErrorCode )
{
SetErrorText( (LPCSTR)szErrorText, dwErrorCode );
}
//////////////////////////////////////////////////////////////////////////
inline char* CSMTPClient::GetLastErrorText()
{
return (char*)m_pErrorText;
}
//////////////////////////////////////////////////////////////////////////
inline DWORD CSMTPClient::ReceiveData( SOCKET hSocket, PBYTE pReceiveBuffer, DWORD dwReceiveBufferSize )
{
DWORD dwReceivedDataSize = 0;
if ( hSocket != INVALID_SOCKET && pReceiveBuffer && dwReceiveBufferSize )
{
int iReceived = 0;
int iLength = 0;
iLength = recv( hSocket, (LPSTR)pReceiveBuffer + iReceived, dwReceiveBufferSize - iReceived,
NO_FLAGS );
if ( iLength != 0 && iLength != SOCKET_ERROR )
iReceived += iLength;
dwReceivedDataSize = iReceived;
pReceiveBuffer[ iReceived ] = 0;
}
return dwReceivedDataSize;
}
inline //////////////////////////////////////////////////////////////////////////
DWORD CSMTPClient::SendData( SOCKET hSocket, PBYTE pSendBuffer, DWORD dwSendBufferSize )
{
DWORD dwSended = 0;
if ( hSocket != INVALID_SOCKET && pSendBuffer && dwSendBufferSize )
{
int iSended = 0;
int iLength = 0;
while ( iLength != SOCKET_ERROR && dwSendBufferSize - iSended > 0 )
{
iLength = send( hSocket, (LPSTR)pSendBuffer + iSended, dwSendBufferSize - iSended,
NO_FLAGS );
if ( iLength != 0 && iLength != SOCKET_ERROR )
iSended += iLength;
}
dwSended = iSended;
}
//if ( dwSended )
// printf( "C: %s", pSendBuffer );
return dwSended;
}
//////////////////////////////////////////////////////////////////////////
inline unsigned short CSMTPClient::GetResponseCode( LPBYTE pBuffer, DWORD dwBufferSize )
{
unsigned short iCode = 0;
if ( dwBufferSize >= 3 )
{
CHAR szResponseCode[ 4 ] = { 0 };
memcpy( szResponseCode, pBuffer, 3 );
szResponseCode[ 3 ] = 0;
iCode = atoi( szResponseCode );
}
return iCode;
}
//////////////////////////////////////////////////////////////////////////
inline void CSMTPClient::ParseESMTPExtensions( LPBYTE pBuffer, DWORD dwBufferSize )
{
const char *szSubstring = strstr( (const char*)pBuffer, "250-AUTH " );
if ( !szSubstring )
{
szSubstring = strstr( (const char*)pBuffer, "250 AUTH " );
}
if ( szSubstring )
{
const char *szSubstringEnd = strstr( (const char*)szSubstring, "\r\n" );
if ( szSubstringEnd )
{
szSubstring += 9;
char szAuthMode[ 256 ] = { 0 };
for ( ; szSubstring < szSubstringEnd + 1 ; szSubstring++ )
{
if ( *szSubstring == ' ' || *szSubstring == '\r' )
{
if ( _strcmpi( szAuthMode, SMTP_COMMAND_AUTH_PLAIN ) == 0 )
{
m_aSupportedAuthModes[ m_dwSupportedAuthModesCount ] = AUTH_MODE_PLAIN;
m_dwSupportedAuthModesCount++;
}
else if ( _strcmpi( szAuthMode, SMTP_COMMAND_AUTH_LOGIN ) == 0 )
{
m_aSupportedAuthModes[ m_dwSupportedAuthModesCount ] = AUTH_MODE_LOGIN;
m_dwSupportedAuthModesCount++;
}
else if ( _strcmpi( szAuthMode, SMTP_COMMAND_AUTH_CRAM_MD5 ) == 0 )
{
m_aSupportedAuthModes[ m_dwSupportedAuthModesCount ] = AUTH_MODE_CRAM_MD5;
m_dwSupportedAuthModesCount++;
}
szAuthMode[ 0 ] = 0;
if ( m_dwSupportedAuthModesCount == MAX_AUTH_MODES_COUND )
break;
}
else
{
szAuthMode[ strlen( szAuthMode ) + 1 ] = 0;
szAuthMode[ strlen( szAuthMode ) ] = *szSubstring;
}
}
}
}
}
//////////////////////////////////////////////////////////////////////////
inline BOOL CSMTPClient::ServerConnect( LPCSTR szServerAddress, const unsigned short iPortNumber )
{
if ( m_bConnected )
ServerDisconnect();
m_bConnected = FALSE;
m_hSocket = INVALID_SOCKET;
m_hSocket = _connectServerSocket( szServerAddress, iPortNumber );
if ( m_hSocket != INVALID_SOCKET )
{
DWORD dwReceiveBufferSize = 1024*16;
PBYTE pReceiveBuffer = (PBYTE)malloc( dwReceiveBufferSize );
if ( pReceiveBuffer )
{
// Connected. Wait server hello string.
DWORD iReceived = ReceiveData( m_hSocket, pReceiveBuffer, dwReceiveBufferSize );
if ( iReceived )
{
// Check 220
int iResponseCode = GetResponseCode( pReceiveBuffer, iReceived );
if ( iResponseCode != 220 )
{
SetErrorText( pReceiveBuffer );
free( pReceiveBuffer );
ServerDisconnect();
return FALSE;
}
}
else
{
SetErrorText( "ReceiveData error. ", WSAGetLastError() );
free( pReceiveBuffer );
ServerDisconnect();
return FALSE;
}
// EHLO / HELO
BYTE szHelloBuffer[ 256 ];
sprintf( (char*)szHelloBuffer, "%s %s\r\n", (char*)SMTP_COMMAND_EHLO, (char*)szServerAddress );
if ( SendData( m_hSocket, (PBYTE)szHelloBuffer, strlen( (const char*)szHelloBuffer ) ) == 0 )
{
SetErrorText( "SendData error.", WSAGetLastError() );
free( pReceiveBuffer );
ServerDisconnect();
return FALSE;
}
iReceived = ReceiveData( m_hSocket, pReceiveBuffer, dwReceiveBufferSize );
if ( iReceived )
{
// Check 250
int iResponseCode = GetResponseCode( pReceiveBuffer, iReceived );
if ( iResponseCode == 500 )
{
SetErrorText( pReceiveBuffer );
sprintf( (char*)szHelloBuffer, "%s %s\r\n", (char*)SMTP_COMMAND_HELO, (char*)szServerAddress );
if ( SendData( m_hSocket, (PBYTE)szHelloBuffer, strlen( (const char*)szHelloBuffer ) ) == 0 )
{
SetErrorText( "SendData error.", WSAGetLastError() );
free( pReceiveBuffer );
ServerDisconnect();
return FALSE;
}
iResponseCode = GetResponseCode( pReceiveBuffer, iReceived );
if ( iResponseCode != 250 )
{
SetErrorText( pReceiveBuffer );
free( pReceiveBuffer );
ServerDisconnect();
return FALSE;
}
}
else if ( iResponseCode != 250 )
{
SetErrorText( pReceiveBuffer );
free( pReceiveBuffer );
ServerDisconnect();
return FALSE;
}
// Parse AUTH supported modes
ParseESMTPExtensions( pReceiveBuffer, iReceived );
}
else
{
SetErrorText( "ReceiveData error.", WSAGetLastError() );
free( pReceiveBuffer );
ServerDisconnect();
return FALSE;
}
free( pReceiveBuffer );
}
}
else
{
return FALSE;
}
m_bConnected = TRUE;
return TRUE;
}
//////////////////////////////////////////////////////////////////////////
inline BOOL CSMTPClient::ServerConnect( LPCSTR szServerAddress, const unsigned short iPortNumber, LPCSTR szUsername, LPCSTR szPassword )
{
BOOL bSuccess = FALSE;
bSuccess = ServerConnect( szServerAddress, iPortNumber );
if ( bSuccess )
{
if ( GetAuthModeIsSupported( AUTH_MODE_CRAM_MD5 ) )
{
ServerLogin( szUsername, szPassword, AUTH_MODE_CRAM_MD5 );
}
else
if ( GetAuthModeIsSupported( AUTH_MODE_PLAIN ) )
{
ServerLogin( szUsername, szPassword, AUTH_MODE_PLAIN );
}
else
if ( GetAuthModeIsSupported( AUTH_MODE_LOGIN ) )
{
ServerLogin( szUsername, szPassword, AUTH_MODE_LOGIN );
}
}
return bSuccess;
}
//////////////////////////////////////////////////////////////////////////
inline SOCKET CSMTPClient::_connectServerSocket( LPCSTR szServerAddress, const unsigned short iPortNumber )
{
int nConnect;
short nProtocolPort = iPortNumber;
LPHOSTENT lpHostEnt;
SOCKADDR_IN sockAddr;
SOCKET hServerSocket = INVALID_SOCKET;
lpHostEnt = gethostbyname( szServerAddress );
if (lpHostEnt)
{
hServerSocket = socket( AF_INET, SOCK_STREAM, IPPROTO_TCP );
if (hServerSocket != INVALID_SOCKET)
{
sockAddr.sin_family = AF_INET;
sockAddr.sin_port = htons( nProtocolPort );
sockAddr.sin_addr = *((LPIN_ADDR)*lpHostEnt->h_addr_list);
nConnect = connect( hServerSocket, (PSOCKADDR)&sockAddr,
sizeof(sockAddr) );
if ( nConnect != 0 )
{
SetErrorText( "connect error.", WSAGetLastError() );
hServerSocket = INVALID_SOCKET;
}
}
else
{
SetErrorText( "Invalid socket." );
throw;
}
}
else
{
SetErrorText( "Error retrieving host by name.", WSAGetLastError() );
}
return hServerSocket ;
}
//////////////////////////////////////////////////////////////////////////
inline void CSMTPClient::ServerDisconnect()
{
if ( m_hSocket != INVALID_SOCKET )
{
if ( SendData( m_hSocket, (PBYTE)SMTP_COMMAND_QUIT, strlen( SMTP_COMMAND_QUIT ) ) == 0 )
{
SetErrorText( "SendData error.", WSAGetLastError() );
return;
}
DWORD dwReceiveBufferSize = 1024*16;
PBYTE pReceiveBuffer = (PBYTE)malloc( dwReceiveBufferSize );
if ( pReceiveBuffer )
{
DWORD iReceived = ReceiveData( m_hSocket, pReceiveBuffer, dwReceiveBufferSize );
if ( iReceived )
SetErrorText( pReceiveBuffer );
free( pReceiveBuffer );
}
m_hSocket = INVALID_SOCKET;
}
m_bConnected = FALSE;
}
//////////////////////////////////////////////////////////////////////////
inline BOOL CSMTPClient::GetAuthModeIsSupported( int iMode )
{
BOOL bSupported = FALSE;
for ( int i = 0 ; i < m_dwSupportedAuthModesCount ; i++ )
{
if ( m_aSupportedAuthModes[ i ] == iMode )
{
bSupported = TRUE;
break;
}
}
return bSupported;
}
//////////////////////////////////////////////////////////////////////////
inline BOOL CSMTPClient::ServerLogin( LPCSTR szUsername, LPCSTR szPassword, int iAuthMode )
{
BOOL bSuccess = FALSE;
if ( iAuthMode == AUTH_MODE_PLAIN )
{
bSuccess = ServerLoginMethodPlain( szUsername, szPassword );
}
else if ( iAuthMode == AUTH_MODE_LOGIN )
{
bSuccess = ServerLoginMethodLogin( szUsername, szPassword );
}
else if ( iAuthMode == AUTH_MODE_CRAM_MD5 )
{
bSuccess = ServerLoginMethodCramMD5( szUsername, szPassword );
}
return bSuccess;
}
//////////////////////////////////////////////////////////////////////////
inline BOOL CSMTPClient::ServerLogin( LPCSTR szUsername, LPCSTR szPassword )
{
BOOL bSuccess = FALSE;
if ( GetAuthModeIsSupported( AUTH_MODE_CRAM_MD5 ) )
{
bSuccess = ServerLogin( szUsername, szPassword, AUTH_MODE_CRAM_MD5 );
}
else
if ( GetAuthModeIsSupported( AUTH_MODE_PLAIN ) )
{
bSuccess = ServerLogin( szUsername, szPassword, AUTH_MODE_PLAIN );
}
else
if ( GetAuthModeIsSupported( AUTH_MODE_LOGIN ) )
{
bSuccess = ServerLogin( szUsername, szPassword, AUTH_MODE_LOGIN );
}
return bSuccess;
}
//////////////////////////////////////////////////////////////////////////
inline BOOL CSMTPClient::ServerLoginMethodPlain( LPCSTR szUsername, LPCSTR szPassword )
{
BOOL bSuccess = FALSE;
BYTE szCommandBuffer[ 256 ];
sprintf( (char*)szCommandBuffer, "%s %s\r\n", (char*)SMTP_COMMAND_AUTH, (char*)SMTP_COMMAND_AUTH_PLAIN );
if ( SendData( m_hSocket, (PBYTE)szCommandBuffer, strlen( (const char*)szCommandBuffer ) ) == 0 )
{
SetErrorText( "SendData error.", WSAGetLastError() );
return FALSE;
}
DWORD dwReceiveBufferSize = 1024*16;
PBYTE pReceiveBuffer = (PBYTE)malloc( dwReceiveBufferSize );
if ( pReceiveBuffer )
{
// Connected. Wait server hello string.
DWORD iReceived = ReceiveData( m_hSocket, pReceiveBuffer, dwReceiveBufferSize );
if ( iReceived )
{
SetErrorText( pReceiveBuffer );
// Check 334
int iResponseCode = GetResponseCode( pReceiveBuffer, iReceived );
if ( iResponseCode != 334 )
{
free( pReceiveBuffer );
return FALSE;
}
}
else
{
SetErrorText( "ReceiveData error.", WSAGetLastError() );
free( pReceiveBuffer );
return FALSE;
}
// Encode.
DWORD dwLoginBuffer = strlen( szUsername ) + strlen( szPassword ) + 3;
char *pLoginBuffer = (char*)malloc( dwLoginBuffer );
if ( pLoginBuffer )
{
ZeroMemory( pLoginBuffer, dwLoginBuffer );
strcpy( pLoginBuffer + 1, szUsername );
strcpy( pLoginBuffer + 1 + strlen( szUsername ) + 1, szPassword );
Base64Coder coder;
coder.Encode( (const PBYTE)pLoginBuffer, dwLoginBuffer - 1 );
LPCSTR szLoginBufferEncoded = coder.EncodedMessage();
if ( szLoginBufferEncoded && strlen( szLoginBufferEncoded ) > 0 )
{
DWORD dwSendBufferSize = strlen( szLoginBufferEncoded ) + 4;
char* pSendBuffer = (char*)malloc( dwSendBufferSize );
if ( pSendBuffer )
{
strcpy( pSendBuffer, szLoginBufferEncoded );
strcat( pSendBuffer, "\r\n" );
if ( SendData( m_hSocket, (PBYTE)pSendBuffer, strlen( (const char*)pSendBuffer ) ) == 0 )
{
SetErrorText( "SendData error.", WSAGetLastError() );
free( pSendBuffer );
free( pLoginBuffer );
free( pReceiveBuffer );
return FALSE;
}
free( pSendBuffer );
}
}
free( pLoginBuffer );
// check result
iReceived = ReceiveData( m_hSocket, pReceiveBuffer, dwReceiveBufferSize );
if ( iReceived )
{
SetErrorText( pReceiveBuffer );
// Check 235
int iResponseCode = GetResponseCode( pReceiveBuffer, iReceived );
if ( iResponseCode != 235 )
{
free( pReceiveBuffer );
return FALSE;
}
bSuccess = TRUE;
}
else
{
SetErrorText( "ReceiveData error.", WSAGetLastError() );
free( pReceiveBuffer );
return FALSE;
}
}
free( pReceiveBuffer );
}
return bSuccess;
}
//////////////////////////////////////////////////////////////////////////
inline BOOL CSMTPClient::ServerLoginMethodLogin( LPCSTR szUsername, LPCSTR szPassword )
{
BOOL bSuccess = FALSE;
BYTE szCommandBuffer[ 256 ];
sprintf( (char*)szCommandBuffer, "%s %s\r\n", (char*)SMTP_COMMAND_AUTH, (char*)SMTP_COMMAND_AUTH_LOGIN );
if ( SendData( m_hSocket, (PBYTE)szCommandBuffer, strlen( (const char*)szCommandBuffer ) ) == 0 )
{
SetErrorText( "SendData error.", WSAGetLastError() );
return FALSE;
}
DWORD dwReceiveBufferSize = 1024*16;
PBYTE pReceiveBuffer = (PBYTE)malloc( dwReceiveBufferSize );
if ( pReceiveBuffer )
{
DWORD iReceived = ReceiveData( m_hSocket, pReceiveBuffer, dwReceiveBufferSize );
if ( iReceived )
{
SetErrorText( pReceiveBuffer );
// Check 334
int iResponseCode = GetResponseCode( pReceiveBuffer, iReceived );
if ( iResponseCode != 334 )
{
free( pReceiveBuffer );
return FALSE;
}
// Check request
if ( iReceived > 6 )
{
Base64Coder coder;
coder.Decode( pReceiveBuffer + 4, iReceived - 6 );
LPCSTR szRequest = coder.DecodedMessage();
if ( szRequest && strlen( szRequest ) > 0 )
{
if ( strcmpi( szRequest, "Username:" ) == 0 )
{
coder.Encode( (const PBYTE)szUsername, strlen( szUsername ) );
LPCSTR szUsernameEncoded = coder.EncodedMessage();
char* szLoginUsernameBuffer = (char*)malloc( strlen( szUsernameEncoded ) + 4 );
if ( szLoginUsernameBuffer )
{
strcpy( szLoginUsernameBuffer, szUsernameEncoded );
strcat( szLoginUsernameBuffer, "\r\n" );
if ( SendData( m_hSocket, (PBYTE)szLoginUsernameBuffer, strlen( (const char*)szLoginUsernameBuffer ) ) == 0 )
{
SetErrorText( "SendData error.", WSAGetLastError() );
free( pReceiveBuffer );
return FALSE;
}
free( szLoginUsernameBuffer );
}
else
{
free( pReceiveBuffer );
return FALSE;
}
iReceived = ReceiveData( m_hSocket, pReceiveBuffer, dwReceiveBufferSize );
if ( iReceived )
{
SetErrorText( pReceiveBuffer );
// Check 334
int iResponseCode = GetResponseCode( pReceiveBuffer, iReceived );
if ( iResponseCode != 334 )
{
free( pReceiveBuffer );
return FALSE;
}
// Check request
if ( iReceived > 6 )
{
coder.Decode( pReceiveBuffer + 4, iReceived - 6 );
LPCSTR szRequest2 = coder.DecodedMessage();
if ( szRequest2 && strlen( szRequest2 ) > 0 )
{
if ( strcmpi( szRequest2, "Password:" ) == 0 )
{
coder.Encode( (const PBYTE)szPassword, strlen( szPassword ) );
LPCSTR szPasswordEncoded = coder.EncodedMessage();
char* szLoginPasswordBuffer = (char*)malloc( strlen( szPasswordEncoded ) + 4 );
if ( szLoginPasswordBuffer )
{
strcpy( szLoginPasswordBuffer, szPasswordEncoded );
strcat( szLoginPasswordBuffer, "\r\n" );
if ( SendData( m_hSocket, (PBYTE)szLoginPasswordBuffer, strlen( (const char*)szLoginPasswordBuffer ) ) == 0 )
{
SetErrorText( "SendData error.", WSAGetLastError() );
free( pReceiveBuffer );
return FALSE;
}
free( szLoginPasswordBuffer );
}
else
{
free( pReceiveBuffer );
return FALSE;
}
iReceived = ReceiveData( m_hSocket, pReceiveBuffer, dwReceiveBufferSize );
if ( iReceived )
{
SetErrorText( pReceiveBuffer );
// Check 235
int iResponseCode = GetResponseCode( pReceiveBuffer, iReceived );
if ( iResponseCode != 235 )
{
free( pReceiveBuffer );
return FALSE;
}
bSuccess = TRUE;
}
else
{
SetErrorText( "ReceiveData error.", WSAGetLastError() );
free( pReceiveBuffer );
return FALSE;
}
}
}
}
}
else
{
free( pReceiveBuffer );
return FALSE;
}
}
}
else
{
free( pReceiveBuffer );
return FALSE;
}
}
else
{
free( pReceiveBuffer );
return FALSE;
}
}
else
{
SetErrorText( "ReceiveData error.", WSAGetLastError() );
free( pReceiveBuffer );
return FALSE;
}
free( pReceiveBuffer );
}
return bSuccess;
}
//////////////////////////////////////////////////////////////////////////
inline BOOL CSMTPClient::ServerLoginMethodCramMD5( LPCSTR szUsername, LPCSTR szPassword )
{
BOOL bSuccess = FALSE;
BYTE szCommandBuffer[ 256 ];
sprintf( (char*)szCommandBuffer, "%s %s\r\n", (char*)SMTP_COMMAND_AUTH, (char*)SMTP_COMMAND_AUTH_CRAM_MD5 );
if ( SendData( m_hSocket, (PBYTE)szCommandBuffer, strlen( (const char*)szCommandBuffer ) ) == 0 )
{
SetErrorText( "SendData error.", WSAGetLastError() );
return FALSE;
}
DWORD dwReceiveBufferSize = 1024*16;
PBYTE pReceiveBuffer = (PBYTE)malloc( dwReceiveBufferSize );
if ( pReceiveBuffer )
{
// Connected. Wait server hello string.
DWORD iReceived = ReceiveData( m_hSocket, pReceiveBuffer, dwReceiveBufferSize );
if ( iReceived )
{
SetErrorText( pReceiveBuffer );
// Check 334
int iResponseCode = GetResponseCode( pReceiveBuffer, iReceived );
if ( iResponseCode != 334 )
{
free( pReceiveBuffer );
return FALSE;
}
// Check request
if ( iReceived > 6 )
{
Base64Coder coder;
coder.Decode( pReceiveBuffer + 4, iReceived - 6 );
LPCSTR szResponse = coder.DecodedMessage();
if ( szResponse && strlen( szResponse ) > 0 )
{
char *auth_hex = hash_md5( szPassword, szResponse, strlen(szResponse) );
if ( !auth_hex )
{
free( pReceiveBuffer );
return FALSE;
}
char *szCommand = (char*)malloc( strlen( szUsername ) + strlen( auth_hex ) + 5 );
if ( szCommand )
{
sprintf( szCommand, "%s %s", szUsername, auth_hex );
free( auth_hex );
coder.Encode( (const PBYTE)szCommand, strlen( szCommand ) );
free( szCommand );
LPCSTR szAuthEncoded = coder.EncodedMessage();
if ( szAuthEncoded == NULL )
{
free( pReceiveBuffer );
return FALSE;
}
char *szAuthCommand = (char*)malloc( strlen( szAuthEncoded ) + 4 );
if ( szAuthCommand )
{
strcpy( szAuthCommand, szAuthEncoded );
strcat( szAuthCommand, "\r\n" );
// Send auth data
if ( SendData( m_hSocket, (PBYTE)szAuthCommand, strlen( (const char*)szAuthCommand ) ) == 0 )
{
SetErrorText( "SendData error.", WSAGetLastError() );
free( szAuthCommand );
free( pReceiveBuffer );
return FALSE;
}
// Check response
iReceived = ReceiveData( m_hSocket, pReceiveBuffer, dwReceiveBufferSize );
if ( iReceived )
{
SetErrorText( pReceiveBuffer );
// Check 235
int iResponseCode = GetResponseCode( pReceiveBuffer, iReceived );
if ( iResponseCode != 235 )
{
free( pReceiveBuffer );
return FALSE;
}
bSuccess = TRUE;
}
else
{
SetErrorText( "ReceiveData error.", WSAGetLastError() );
free( pReceiveBuffer );
return FALSE;
}
free( szAuthCommand );
}
else
{
free( pReceiveBuffer );
return FALSE;
}
}
else
{
free( auth_hex );
free( pReceiveBuffer );
return FALSE;
}
}
else
{
free( pReceiveBuffer );
return FALSE;
}
}
}
else
{
SetErrorText( "ReceiveData error.", WSAGetLastError() );
free( pReceiveBuffer );
return FALSE;
}
free( pReceiveBuffer );
}
else
{
SetErrorText( "malloc() failed.", GetLastError() );
}
return bSuccess;
}
//////////////////////////////////////////////////////////////////////////
inline BOOL CSMTPClient::SendMessage( LPCSTR szFromAddress, LPCSTR szFromName, LPCSTR szToAddresses, LPCSTR szSubject, LPCSTR szXMailer, LPBYTE pBodyBuffer, DWORD dwBodySize )
{
BOOL bSuccess = FALSE;
// Format Header
if ( !szFromAddress )
{
SetErrorText( "SendMessage. Invalid Parameters!" );
return NULL;
}
char *szHeaderBuffer = (char*)malloc( 1024 * 16 );
if ( szHeaderBuffer )
{
// get the current date and time
char szDate[ 500 ];
char sztTime[ 500 ];
SYSTEMTIME st = { 0 };
::GetSystemTime(&st);
::GetDateFormatA( MAKELCID( MAKELANGID( LANG_ENGLISH, SUBLANG_ENGLISH_US), SORT_DEFAULT), 0, &st, "ddd',' dd MMM yyyy", szDate , sizeof( szDate ) );
::GetTimeFormatA( MAKELCID( MAKELANGID( LANG_ENGLISH, SUBLANG_ENGLISH_US), SORT_DEFAULT), TIME_FORCE24HOURFORMAT, &st, "HH':'mm':'ss", sztTime, sizeof( sztTime ) );
sprintf( szHeaderBuffer, "DATE: %s %s\r\n", szDate, sztTime );
// X-Mailer Field
if ( szXMailer && strlen( szXMailer ) )
{
strcat( szHeaderBuffer, "X-Mailer: " );
strcat( szHeaderBuffer, szXMailer );
strcat( szHeaderBuffer, "\r\n" );
}
// From:
strcat( szHeaderBuffer, "From: " );
if ( szFromName )
{
strcat( szHeaderBuffer, "\"" );
strcat( szHeaderBuffer, szFromName );
strcat( szHeaderBuffer, "\" <" );
strcat( szHeaderBuffer, szFromAddress );
strcat( szHeaderBuffer, ">\r\n" );
}
else
{
strcat( szHeaderBuffer, "<" );
strcat( szHeaderBuffer, szFromAddress );
strcat( szHeaderBuffer, ">\r\n" );
}
// Subject:
if ( szSubject && strlen( szSubject ) )
{
strcat( szHeaderBuffer, "Subject: " );
strcat( szHeaderBuffer, szSubject );
strcat( szHeaderBuffer, "\r\n" );
}
// To Fields
strcat( szHeaderBuffer, "To: " );
strcat( szHeaderBuffer, szToAddresses );
strcat( szHeaderBuffer, "\r\n" );
// MIME
strcat( szHeaderBuffer, "MIME-Version: 1.0\r\nContent-type: text/plain; charset=US-ASCII\r\n" );
// End Header
strcat( szHeaderBuffer, "\r\n" );
}
else
{
SetErrorText( "malloc error.", GetLastError() );
return FALSE;
}
BYTE szCommandBuffer[ 256 ];
sprintf( (char*)szCommandBuffer, "MAIL FROM:<%s> SIZE=%u\r\n", (char*)szFromAddress, strlen( szHeaderBuffer ) + dwBodySize + 2 );
if ( SendData( m_hSocket, (PBYTE)szCommandBuffer, strlen( (const char*)szCommandBuffer ) ) == 0 )
{
SetErrorText( "SendData error.", WSAGetLastError() );
free( szHeaderBuffer );
return FALSE;
}
DWORD dwReceiveBufferSize = 1024*16;
PBYTE pReceiveBuffer = (PBYTE)malloc( dwReceiveBufferSize );
if ( pReceiveBuffer )
{
DWORD iReceived = ReceiveData( m_hSocket, pReceiveBuffer, dwReceiveBufferSize );
if ( iReceived )
{
SetErrorText( pReceiveBuffer );
// Check 250
int iResponseCode = GetResponseCode( pReceiveBuffer, iReceived );
if ( iResponseCode != 250 )
{
free( szHeaderBuffer );
free( pReceiveBuffer );
return FALSE;
}
}
else
{
SetErrorText( "ReceiveData error.", WSAGetLastError() );
free( szHeaderBuffer );
free( pReceiveBuffer );
return FALSE;
}
// Post "RCTP TO:"
char *szCurrentAddr = (char*)malloc( strlen( szToAddresses ) + 1 );
if ( !szCurrentAddr )
{
SetErrorText( "malloc error.", GetLastError() );
free( szHeaderBuffer );
free( pReceiveBuffer );
return FALSE;
}
const char* szToOffset = szToAddresses;
char* szZap = NULL;
BOOL bRCPTAccepted = FALSE;
do
{
strcpy( szCurrentAddr, szToOffset );
char *szExtractedAdress = szCurrentAddr;
szZap = strchr( szCurrentAddr, ',' );
if ( szZap )
{
*szZap = 0;
szToOffset = szZap + 1;
}
char *pSkobka1 = strchr( szCurrentAddr, '<' );
char *pSkobka2 = strchr( szCurrentAddr, '>' );
if ( pSkobka1 && pSkobka2 && pSkobka2 > pSkobka1 )
{
szExtractedAdress = pSkobka1 + 1;
*pSkobka2 = NULL;
}
if ( szExtractedAdress && strlen( szExtractedAdress ) > 0 )
{
sprintf( (char*)szCommandBuffer, "RCPT TO:<%s>\r\n", (char*)szExtractedAdress );
if ( SendData( m_hSocket, (PBYTE)szCommandBuffer, strlen( (const char*)szCommandBuffer ) ) == 0 )
{
SetErrorText( "SendData error.", WSAGetLastError() );
free( szCurrentAddr );
free( pReceiveBuffer );
free( szHeaderBuffer );
return FALSE;
}
iReceived = ReceiveData( m_hSocket, pReceiveBuffer, dwReceiveBufferSize );
if ( iReceived )
{
SetErrorText( pReceiveBuffer );
// Check 250
int iResponseCode = GetResponseCode( pReceiveBuffer, iReceived );
if ( iResponseCode == 250 )
{
bRCPTAccepted = TRUE;
}
}
else
{
SetErrorText( "ReceiveData error.", WSAGetLastError() );
free( szCurrentAddr );
free( pReceiveBuffer );
free( szHeaderBuffer );
return FALSE;
}
}
} while( szZap );
free( szCurrentAddr );
if ( bRCPTAccepted )
{
sprintf( (char*)szCommandBuffer, "DATA\r\n" );
if ( SendData( m_hSocket, (PBYTE)szCommandBuffer, strlen( (const char*)szCommandBuffer ) ) == 0 )
{
SetErrorText( "SendData error.", WSAGetLastError() );
free( pReceiveBuffer );
free( szHeaderBuffer );
return FALSE;
}
iReceived = ReceiveData( m_hSocket, pReceiveBuffer, dwReceiveBufferSize );
if ( iReceived )
{
SetErrorText( pReceiveBuffer );
// Check 354
int iResponseCode = GetResponseCode( pReceiveBuffer, iReceived );
if ( iResponseCode != 354 )
{
free( pReceiveBuffer );
free( szHeaderBuffer );
return FALSE;
}
}
else
{
SetErrorText( "ReceiveData error.", WSAGetLastError() );
free( pReceiveBuffer );
free( szHeaderBuffer );
return FALSE;
}
// Send message data (header + body + .)
if ( SendData( m_hSocket, (PBYTE)szHeaderBuffer, strlen( (const char*)szHeaderBuffer ) ) == 0 )
{
SetErrorText( "SendData error.", WSAGetLastError() );
free( pReceiveBuffer );
free( szHeaderBuffer );
return FALSE;
}
if ( SendData( m_hSocket, (PBYTE)pBodyBuffer, dwBodySize ) == 0 )
{
SetErrorText( "SendData error.", WSAGetLastError() );
free( pReceiveBuffer );
free( szHeaderBuffer );
return FALSE;
}
if ( SendData( m_hSocket, (PBYTE)"\r\n.\r\n", 5 ) == 0 )
{
SetErrorText( "SendData error.", WSAGetLastError() );
free( pReceiveBuffer );
free( szHeaderBuffer );
return FALSE;
}
iReceived = ReceiveData( m_hSocket, pReceiveBuffer, dwReceiveBufferSize );
if ( iReceived )
{
SetErrorText( pReceiveBuffer );
// Check 250
int iResponseCode = GetResponseCode( pReceiveBuffer, iReceived );
if ( iResponseCode == 250 )
{
bSuccess = TRUE;
}
}
else
{
SetErrorText( "ReceiveData error.", WSAGetLastError() );
}
}
free( pReceiveBuffer );
}
else
{
SetErrorText( "malloc error.", GetLastError() );
}
if ( szHeaderBuffer )
free( szHeaderBuffer );
return bSuccess;
}
//////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
#ifndef PAGESIZE
#define PAGESIZE 4096
#endif
#ifndef ROUNDTOPAGE
#define ROUNDTOPAGE(a) (((a/4096)+1)*4096)
#endif
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
inline Base64Coder::Base64Coder()
: m_pDBuffer(NULL),
m_pEBuffer(NULL),
m_nDBufLen(0),
m_nEBufLen(0)
{
}
inline Base64Coder::~Base64Coder()
{
if(m_pDBuffer != NULL)
delete [] m_pDBuffer;
if(m_pEBuffer != NULL)
delete [] m_pEBuffer;
}
inline LPCSTR Base64Coder::DecodedMessage() const
{
return (LPCSTR) m_pDBuffer;
}
inline LPCSTR Base64Coder::EncodedMessage() const
{
return (LPCSTR) m_pEBuffer;
}
inline void Base64Coder::AllocEncode(DWORD nSize)
{
if(m_nEBufLen < nSize)
{
if(m_pEBuffer != NULL)
delete [] m_pEBuffer;
m_nEBufLen = ROUNDTOPAGE(nSize);
m_pEBuffer = new BYTE[m_nEBufLen];
}
::ZeroMemory(m_pEBuffer, m_nEBufLen);
m_nEDataLen = 0;
}
inline void Base64Coder::AllocDecode(DWORD nSize)
{
if(m_nDBufLen < nSize)
{
if(m_pDBuffer != NULL)
delete [] m_pDBuffer;
m_nDBufLen = ROUNDTOPAGE(nSize);
m_pDBuffer = new BYTE[m_nDBufLen];
}
::ZeroMemory(m_pDBuffer, m_nDBufLen);
m_nDDataLen = 0;
}
inline void Base64Coder::SetEncodeBuffer(const PBYTE pBuffer, DWORD nBufLen)
{
DWORD i = 0;
AllocEncode(nBufLen);
while(i < nBufLen)
{
if(!_IsBadMimeChar(pBuffer[i]))
{
m_pEBuffer[m_nEDataLen] = pBuffer[i];
m_nEDataLen++;
}
i++;
}
}
inline void Base64Coder::SetDecodeBuffer(const PBYTE pBuffer, DWORD nBufLen)
{
AllocDecode(nBufLen);
::CopyMemory(m_pDBuffer, pBuffer, nBufLen);
m_nDDataLen = nBufLen;
}
inline void Base64Coder::Encode(const PBYTE pBuffer, DWORD nBufLen)
{
SetDecodeBuffer(pBuffer, nBufLen);
AllocEncode(nBufLen * 2);
TempBucket Raw;
DWORD nIndex = 0;
while((nIndex + 3) <= nBufLen)
{
Raw.Clear();
::CopyMemory(&Raw, m_pDBuffer + nIndex, 3);
Raw.nSize = 3;
_EncodeToBuffer(Raw, m_pEBuffer + m_nEDataLen);
nIndex += 3;
m_nEDataLen += 4;
}
if(nBufLen > nIndex)
{
Raw.Clear();
Raw.nSize = (BYTE) (nBufLen - nIndex);
::CopyMemory(&Raw, m_pDBuffer + nIndex, nBufLen - nIndex);
_EncodeToBuffer(Raw, m_pEBuffer + m_nEDataLen);
m_nEDataLen += 4;
}
}
inline void Base64Coder::Encode(LPCSTR szMessage)
{
if(szMessage != NULL)
Base64Coder::Encode((const PBYTE)szMessage, strlen( (const char*)szMessage));
}
inline void Base64Coder::Decode(const PBYTE pBuffer, DWORD dwBufLen)
{
if(is_init())
_Init();
SetEncodeBuffer(pBuffer, dwBufLen);
AllocDecode(dwBufLen);
TempBucket Raw;
DWORD nIndex = 0;
while((nIndex + 4) <= m_nEDataLen)
{
Raw.Clear();
Raw.nData[0] = DecodeTable()[m_pEBuffer[nIndex]];
Raw.nData[1] = DecodeTable()[m_pEBuffer[nIndex + 1]];
Raw.nData[2] = DecodeTable()[m_pEBuffer[nIndex + 2]];
Raw.nData[3] = DecodeTable()[m_pEBuffer[nIndex + 3]];
if(Raw.nData[2] == 255)
Raw.nData[2] = 0;
if(Raw.nData[3] == 255)
Raw.nData[3] = 0;
Raw.nSize = 4;
_DecodeToBuffer(Raw, m_pDBuffer + m_nDDataLen);
nIndex += 4;
m_nDDataLen += 3;
}
// If nIndex < m_nEDataLen, then we got a decode message without padding.
// We may want to throw some kind of warning here, but we are still required
// to handle the decoding as if it was properly padded.
if(nIndex < m_nEDataLen)
{
Raw.Clear();
for(DWORD i = nIndex; i < m_nEDataLen; i++)
{
Raw.nData[i - nIndex] = DecodeTable()[m_pEBuffer[i]];
Raw.nSize++;
if(Raw.nData[i - nIndex] == 255)
Raw.nData[i - nIndex] = 0;
}
_DecodeToBuffer(Raw, m_pDBuffer + m_nDDataLen);
m_nDDataLen += (m_nEDataLen - nIndex);
}
}
inline void Base64Coder::Decode(LPCSTR szMessage)
{
if(szMessage != NULL)
Base64Coder::Decode((const PBYTE)szMessage, strlen((const char*)szMessage));
}
inline DWORD Base64Coder::_DecodeToBuffer(const TempBucket &Decode, PBYTE pBuffer)
{
TempBucket Data;
DWORD nCount = 0;
_DecodeRaw(Data, Decode);
for(int i = 0; i < 3; i++)
{
pBuffer[i] = Data.nData[i];
if(pBuffer[i] != 255)
nCount++;
}
return nCount;
}
inline void Base64Coder::_EncodeToBuffer(const TempBucket &Decode, PBYTE pBuffer)
{
TempBucket Data;
_EncodeRaw(Data, Decode);
for(int i = 0; i < 4; i++)
pBuffer[i] = Base64Digits()[Data.nData[i]];
switch(Decode.nSize)
{
case 1:
pBuffer[2] = '=';
case 2:
pBuffer[3] = '=';
}
}
inline void Base64Coder::_DecodeRaw(TempBucket &Data, const TempBucket &Decode)
{
BYTE nTemp;
Data.nData[0] = Decode.nData[0];
Data.nData[0] <<= 2;
nTemp = Decode.nData[1];
nTemp >>= 4;
nTemp &= 0x03;
Data.nData[0] |= nTemp;
Data.nData[1] = Decode.nData[1];
Data.nData[1] <<= 4;
nTemp = Decode.nData[2];
nTemp >>= 2;
nTemp &= 0x0F;
Data.nData[1] |= nTemp;
Data.nData[2] = Decode.nData[2];
Data.nData[2] <<= 6;
nTemp = Decode.nData[3];
nTemp &= 0x3F;
Data.nData[2] |= nTemp;
}
inline void Base64Coder::_EncodeRaw(TempBucket &Data, const TempBucket &Decode)
{
BYTE nTemp;
Data.nData[0] = Decode.nData[0];
Data.nData[0] >>= 2;
Data.nData[1] = Decode.nData[0];
Data.nData[1] <<= 4;
nTemp = Decode.nData[1];
nTemp >>= 4;
Data.nData[1] |= nTemp;
Data.nData[1] &= 0x3F;
Data.nData[2] = Decode.nData[1];
Data.nData[2] <<= 2;
nTemp = Decode.nData[2];
nTemp >>= 6;
Data.nData[2] |= nTemp;
Data.nData[2] &= 0x3F;
Data.nData[3] = Decode.nData[2];
Data.nData[3] &= 0x3F;
}
inline BOOL Base64Coder::_IsBadMimeChar(BYTE nData)
{
switch(nData)
{
case '\r': case '\n': case '\t': case ' ' :
case '\b': case '\a': case '\f': case '\v':
return TRUE;
default:
return FALSE;
}
}
inline void Base64Coder::_Init()
{ // Initialize Decoding table.
int i;
for(i = 0; i < 256; i++)
DecodeTable()[i] = -2;
for(i = 0; i < 64; i++)
{
DecodeTable()[Base64Digits()[i]] = i;
DecodeTable()[Base64Digits()[i]|0x80] = i;
}
DecodeTable()['='] = -1;
DecodeTable()['='|0x80] = -1;
is_init() = TRUE;
}
}
}
}
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