// pdo error handler for the dbh context.
bool pdo_sqlsrv_handle_dbh_error( sqlsrv_context& ctx, unsigned int sqlsrv_error_code, bool warning TSRMLS_DC,
va_list* print_args )
{
pdo_dbh_t* dbh = reinterpret_cast<pdo_dbh_t*>( ctx.driver());
SQLSRV_ASSERT( dbh != NULL, "pdo_sqlsrv_handle_dbh_error: Null dbh passed" );
sqlsrv_error_auto_ptr error;
if( sqlsrv_error_code != SQLSRV_ERROR_ODBC ) {
core_sqlsrv_format_driver_error( ctx, get_error_message( sqlsrv_error_code ), error, SEV_ERROR TSRMLS_CC, print_args );
}
else {
bool err = core_sqlsrv_get_odbc_error( ctx, 1, error, SEV_ERROR TSRMLS_CC );
SQLSRV_ASSERT( err == true, "No ODBC error was found" );
}
SQLSRV_STATIC_ASSERT( sizeof( error->sqlstate ) <= sizeof( dbh->error_code ));
strcpy_s( dbh->error_code, sizeof( dbh->error_code ), reinterpret_cast<const char*>( error->sqlstate ));
switch( dbh->error_mode ) {
case PDO_ERRMODE_EXCEPTION:
if( !warning ) {
pdo_sqlsrv_throw_exception( error TSRMLS_CC );
}
ctx.set_last_error( error );
break;
case PDO_ERRMODE_WARNING:
if( !warning ) {
unsigned int msg_len = strlen( reinterpret_cast<const char*>( error->native_message )) + SQL_SQLSTATE_BUFSIZE
+ MAX_DIGITS + 1;
sqlsrv_malloc_auto_ptr<char> msg;
msg = static_cast<char*>( sqlsrv_malloc( msg_len ));
core_sqlsrv_format_message( msg, msg_len, WARNING_TEMPLATE, error->sqlstate, error->native_code,
error->native_message );
php_error( E_WARNING, msg );
sqlsrv_free( msg );
}
ctx.set_last_error( error );
break;
case PDO_ERRMODE_SILENT:
ctx.set_last_error( error );
break;
default:
DIE( "Unknown error mode. %1!d!", dbh->error_mode );
break;
}
// return error ignored = true for warnings.
return ( warning ? true : false );
}
// thin wrapper around convert_string_from_default_encoding that handles
// allocation of the destination string. An empty string passed in returns
// failure since it's a failure case for convert_string_from_default_encoding.
wchar_t* utf16_string_from_mbcs_string( SQLSRV_ENCODING php_encoding, const char* mbcs_string, unsigned int mbcs_len,
unsigned int* utf16_len )
{
*utf16_len = (mbcs_len + 1);
wchar_t* utf16_string = reinterpret_cast<wchar_t*>( sqlsrv_malloc( *utf16_len * sizeof( wchar_t )));
*utf16_len = convert_string_from_default_encoding( php_encoding, mbcs_string, mbcs_len,
utf16_string, *utf16_len );
if( *utf16_len == 0 ) {
// we preserve the error and reset it because sqlsrv_free resets the last error
DWORD last_error = GetLastError();
sqlsrv_free( utf16_string );
SetLastError( last_error );
return NULL;
}
return utf16_string;
}
bool convert_string_from_utf16( SQLSRV_ENCODING encoding, const wchar_t* inString, SQLINTEGER cchInLen, char** outString, SQLINTEGER& cchOutLen )
{
SQLSRV_ASSERT( inString != NULL, "Input string must be specified" );
SQLSRV_ASSERT( outString != NULL, "Output buffer pointer must be specified" );
SQLSRV_ASSERT( *outString == NULL, "Output buffer pointer must not be set" );
if (cchInLen == 0 && inString[0] == L'\0') {
*outString = reinterpret_cast<char*>( sqlsrv_malloc ( 1 ) );
*outString[0] = '\0';
cchOutLen = 0;
return true;
}
// flags set to 0 by default, which means that any invalid characters are dropped rather than causing
// an error. This happens only on XP.
DWORD flags = 0;
if( encoding == CP_UTF8 && g_osversion.dwMajorVersion >= SQLSRV_OS_VISTA_OR_LATER ) {
// Vista (and later) will detect invalid UTF-16 characters and raise an error.
flags = WC_ERR_INVALID_CHARS;
}
// calculate the number of characters needed
cchOutLen = WideCharToMultiByte( encoding, flags,
inString, cchInLen,
NULL, 0, NULL, NULL );
if( cchOutLen == 0 ) {
return false;
}
// Create a buffer to fit the encoded string
char* newString = reinterpret_cast<char*>( sqlsrv_malloc( cchOutLen + 1 /* NULL char*/ ));
int rc = WideCharToMultiByte( encoding, flags,
inString, cchInLen,
newString, cchOutLen, NULL, NULL );
if( rc == 0 ) {
cchOutLen = 0;
sqlsrv_free( newString );
return false;
}
*outString = newString;
newString[cchOutLen] = '\0'; // null terminate the encoded string
return true;
}
bool convert_string_from_utf16_inplace( SQLSRV_ENCODING encoding, char** string, SQLLEN& len)
{
SQLSRV_ASSERT( string != NULL && *string != NULL, "String must be specified" );
// for the empty string, we simply returned we converted it
if( len == 0 && *string[0] == '\0' ) {
return true;
}
char* outString = NULL;
SQLINTEGER outLen = 0;
bool result = convert_string_from_utf16( encoding, reinterpret_cast<const wchar_t*>(*string), len / sizeof(wchar_t), &outString, outLen);
if (result)
{
sqlsrv_free( *string );
*string = outString;
len = outLen;
}
return result;
}