<?php
/*
V4.22 15 Apr 2004  (c) 2000-2004 John Lim (jlim@natsoft.com.my). All rights reserved.
  Released under both BSD license and Lesser GPL library license.
  Whenever there is any discrepancy between the two licenses,
  the BSD license will take precedence.
Set tabs to 4 for best viewing.

  Latest version is available at http://php.weblogs.com/

    Microsoft ADO data driver. Requires ADO. Works only on MS Windows.
*/
define("_ADODB_ADO_LAYER", 1);
/*--------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------*/

class ADODB_ado extends ADOConnection
{
    var $databaseType = "ado";
    var $_bindInputArray = false;
    var $fmtDate = "'Y-m-d'";
    var $fmtTimeStamp = "'Y-m-d, h:i:sA'";
    var $replaceQuote = "''"; // string to use to replace quotes
    var $dataProvider = "ado";
    var $hasAffectedRows = true;
    var $adoParameterType = 201; // 201 = long varchar, 203=long wide varchar, 205 = long varbinary
    var $_affectedRows = false;
    var $_thisTransactions;
    var $_cursor_type = 3; // 3=adOpenStatic,0=adOpenForwardOnly,1=adOpenKeyset,2=adOpenDynamic
    var $_cursor_location = 3; // 2=adUseServer, 3 = adUseClient;
    var $_lock_type = -1;
    var $_execute_option = -1;
    var $poorAffectedRows = true;
    var $charPage;

    function ADODB_ado()
    {
        $this->_affectedRows = new VARIANT;
    }

    function ServerInfo()
    {
        if (!empty($this->_connectionID)) $desc = $this->_connectionID->provider;
        return array('description' => $desc, 'version' => '');
    }

    function _affectedrows()
    {
        if (PHP_VERSION >= 5) return $this->_affectedRows;

        return $this->_affectedRows->value;
    }

    // you can also pass a connection string like this:
    //
    // $DB->Connect('USER ID=sa;PASSWORD=pwd;SERVER=mangrove;DATABASE=ai',false,false,'SQLOLEDB');
    function _connect($argHostname, $argUsername, $argPassword, $argProvider = 'MSDASQL')
    {
        $u = 'UID';
        $p = 'PWD';

        if (!empty($this->charPage))
            $dbc = new COM('ADODB.Connection', null, $this->charPage);
        else
            $dbc = new COM('ADODB.Connection');

        if (!$dbc) return false;

        /* special support if provider is mssql or access */
        if ($argProvider == 'mssql') {
            $u = 'User Id'; //User parameter name for OLEDB
            $p = 'Password';
            $argProvider = "SQLOLEDB"; // SQL Server Provider

            // not yet
            //if ($argDatabasename) $argHostname .= ";Initial Catalog=$argDatabasename";

            //use trusted conection for SQL if username not specified
            if (!$argUsername) $argHostname .= ";Trusted_Connection=Yes";
        } elseif ($argProvider == 'access')
            $argProvider = "Microsoft.Jet.OLEDB.4.0"; // Microsoft Jet Provider

        if ($argProvider) $dbc->Provider = $argProvider;

        if ($argUsername) $argHostname .= ";$u=$argUsername";
        if ($argPassword) $argHostname .= ";$p=$argPassword";

        if ($this->debug) ADOConnection::outp("Host=" . $argHostname . "<BR>\n version=$dbc->version");
        // @ added below for php 4.0.1 and earlier
        @$dbc->Open((string)$argHostname);

        $this->_connectionID = $dbc;

        $dbc->CursorLocation = $this->_cursor_location;
        return $dbc->State > 0;
    }

    // returns true or false
    function _pconnect($argHostname, $argUsername, $argPassword, $argProvider = 'MSDASQL')
    {
        return $this->_connect($argHostname, $argUsername, $argPassword, $argProvider);
    }

    /*
        adSchemaCatalogs	= 1,
        adSchemaCharacterSets	= 2,
        adSchemaCollations	= 3,
        adSchemaColumns	= 4,
        adSchemaCheckConstraints	= 5,
        adSchemaConstraintColumnUsage	= 6,
        adSchemaConstraintTableUsage	= 7,
        adSchemaKeyColumnUsage	= 8,
        adSchemaReferentialContraints	= 9,
        adSchemaTableConstraints	= 10,
        adSchemaColumnsDomainUsage	= 11,
        adSchemaIndexes	= 12,
        adSchemaColumnPrivileges	= 13,
        adSchemaTablePrivileges	= 14,
        adSchemaUsagePrivileges	= 15,
        adSchemaProcedures	= 16,
        adSchemaSchemata	= 17,
        adSchemaSQLLanguages	= 18,
        adSchemaStatistics	= 19,
        adSchemaTables	= 20,
        adSchemaTranslations	= 21,
        adSchemaProviderTypes	= 22,
        adSchemaViews	= 23,
        adSchemaViewColumnUsage	= 24,
        adSchemaViewTableUsage	= 25,
        adSchemaProcedureParameters	= 26,
        adSchemaForeignKeys	= 27,
        adSchemaPrimaryKeys	= 28,
        adSchemaProcedureColumns	= 29,
        adSchemaDBInfoKeywords	= 30,
        adSchemaDBInfoLiterals	= 31,
        adSchemaCubes	= 32,
        adSchemaDimensions	= 33,
        adSchemaHierarchies	= 34,
        adSchemaLevels	= 35,
        adSchemaMeasures	= 36,
        adSchemaProperties	= 37,
        adSchemaMembers	= 38

    */

    function &MetaTables()
    {
        $arr = array();
        $dbc = $this->_connectionID;

        $adors = @$dbc->OpenSchema(20); //tables
        if ($adors) {
            $f = $adors->Fields(2); //table/view name
            $t = $adors->Fields(3); //table type
            while (!$adors->EOF) {
                $tt = substr($t->value, 0, 6);
                if ($tt != 'SYSTEM' && $tt != 'ACCESS')
                    $arr[] = $f->value;
                //print $f->value . ' ' . $t->value.'<br>';
                $adors->MoveNext();
            }
            $adors->Close();
        }

        return $arr;
    }

    function &MetaColumns($table)
    {
        $table = strtoupper($table);
        $arr = array();
        $dbc = $this->_connectionID;

        $adors = @$dbc->OpenSchema(4); //tables

        if ($adors) {
            $t = $adors->Fields(2); //table/view name
            while (!$adors->EOF) {

                if (strtoupper($t->Value) == $table) {

                    $fld = new ADOFieldObject();
                    $c = $adors->Fields(3);
                    $fld->name = $c->Value;
                    $fld->type = 'CHAR'; // cannot discover type in ADO!
                    $fld->max_length = -1;
                    $arr[strtoupper($fld->name)] = $fld;
                }

                $adors->MoveNext();
            }
            $adors->Close();
        }

        return $arr;
    }

    /* returns queryID or false */
    function &_query($sql, $inputarr = false)
    {

        $dbc = $this->_connectionID;

        //	return rs
        if ($inputarr) {

            if (!empty($this->charPage))
                $oCmd = new COM('ADODB.Command', null, $this->charPage);
            else
                $oCmd = new COM('ADODB.Command');
            $oCmd->ActiveConnection = $dbc;
            $oCmd->CommandText = $sql;
            $oCmd->CommandType = 1;

            foreach ($inputarr as $val) {
                // name, type, direction 1 = input, len,
                $this->adoParameterType = 130;
                $p = $oCmd->CreateParameter('name', $this->adoParameterType, 1, strlen($val), $val);
                //print $p->Type.' '.$p->value;
                $oCmd->Parameters->Append($p);
            }
            $p = false;
            $rs = $oCmd->Execute();
            $e = $dbc->Errors;
            if ($dbc->Errors->Count > 0) return false;
            return $rs;
        }

        $rs = @$dbc->Execute($sql, $this->_affectedRows, $this->_execute_option);
        /*
            $rs =  new COM('ADODB.Recordset');
            if ($rs) {
                $rs->Open ($sql, $dbc, $this->_cursor_type,$this->_lock_type, $this->_execute_option);
            }
        */
        if ($dbc->Errors->Count > 0) return false;
        if (!$rs) return false;

        if ($rs->State == 0) return true; // 0 = adStateClosed means no records returned
        return $rs;
    }

    function BeginTrans()
    {
        if ($this->transOff) return true;

        if (isset($this->_thisTransactions))
            if (!$this->_thisTransactions) return false;
            else {
                $o = $this->_connectionID->Properties("Transaction DDL");
                $this->_thisTransactions = $o ? true : false;
                if (!$o) return false;
            }
        @$this->_connectionID->BeginTrans();
        $this->transCnt += 1;
        return true;
    }

    function CommitTrans($ok = true)
    {
        if (!$ok) return $this->RollbackTrans();
        if ($this->transOff) return true;

        @$this->_connectionID->CommitTrans();
        if ($this->transCnt) @$this->transCnt -= 1;
        return true;
    }

    function RollbackTrans()
    {
        if ($this->transOff) return true;
        @$this->_connectionID->RollbackTrans();
        if ($this->transCnt) @$this->transCnt -= 1;
        return true;
    }

    /*	Returns: the last error message from previous database operation	*/

    function ErrorMsg()
    {
        $errc = $this->_connectionID->Errors;
        if ($errc->Count == 0) return '';
        $err = $errc->Item($errc->Count - 1);
        return $err->Description;
    }

    function ErrorNo()
    {
        $errc = $this->_connectionID->Errors;
        if ($errc->Count == 0) return 0;
        $err = $errc->Item($errc->Count - 1);
        return $err->NativeError;
    }

    // returns true or false
    function _close()
    {
        if ($this->_connectionID) $this->_connectionID->Close();
        $this->_connectionID = false;
        return true;
    }

}

/*--------------------------------------------------------------------------------------
     Class Name: Recordset
--------------------------------------------------------------------------------------*/

class ADORecordSet_ado extends ADORecordSet
{

    var $bind = false;
    var $databaseType = "ado";
    var $dataProvider = "ado";
    var $_tarr = false; // caches the types
    var $_flds; // and field objects
    var $canSeek = true;
    var $hideErrors = true;

    function ADORecordSet_ado($id, $mode = false)
    {
        if ($mode === false) {
            global $ADODB_FETCH_MODE;
            $mode = $ADODB_FETCH_MODE;
        }
        $this->fetchMode = $mode;
        return $this->ADORecordSet($id, $mode);
    }

    // returns the field object
    function FetchField($fieldOffset = -1)
    {
        $off = $fieldOffset + 1; // offsets begin at 1

        $o = new ADOFieldObject();
        $rs = $this->_queryID;
        $f = $rs->Fields($fieldOffset);
        $o->name = $f->Name;
        $t = $f->Type;
        $o->type = $this->MetaType($t);
        $o->max_length = $f->DefinedSize;
        $o->ado_type = $t;

        //print "off=$off name=$o->name type=$o->type len=$o->max_length<br>";
        return $o;
    }

    /* Use associative array to get fields array */
    function Fields($colname)
    {
        if ($this->fetchMode & ADODB_FETCH_ASSOC) return $this->fields[$colname];
        if (!$this->bind) {
            $this->bind = array();
            for ($i = 0; $i < $this->_numOfFields; $i++) {
                $o = $this->FetchField($i);
                $this->bind[strtoupper($o->name)] = $i;
            }
        }

        return $this->fields[$this->bind[strtoupper($colname)]];
    }

    function _initrs()
    {
        $rs = $this->_queryID;
        $this->_numOfRows = $rs->RecordCount;

        $f = $rs->Fields;
        $this->_numOfFields = $f->Count;
    }

    // should only be used to move forward as we normally use forward-only cursors
    function _seek($row)
    {
        $rs = $this->_queryID;
        // absoluteposition doesn't work -- my maths is wrong ?
        //	$rs->AbsolutePosition->$row-2;
        //	return true;
        if ($this->_currentRow > $row) return false;
        @$rs->Move((integer)$row - $this->_currentRow - 1); //adBookmarkFirst
        return true;
    }

    /*
        OLEDB types

         enum DBTYPEENUM
        {	DBTYPE_EMPTY	= 0,
        DBTYPE_NULL	= 1,
        DBTYPE_I2	= 2,
        DBTYPE_I4	= 3,
        DBTYPE_R4	= 4,
        DBTYPE_R8	= 5,
        DBTYPE_CY	= 6,
        DBTYPE_DATE	= 7,
        DBTYPE_BSTR	= 8,
        DBTYPE_IDISPATCH	= 9,
        DBTYPE_ERROR	= 10,
        DBTYPE_BOOL	= 11,
        DBTYPE_VARIANT	= 12,
        DBTYPE_IUNKNOWN	= 13,
        DBTYPE_DECIMAL	= 14,
        DBTYPE_UI1	= 17,
        DBTYPE_ARRAY	= 0x2000,
        DBTYPE_BYREF	= 0x4000,
        DBTYPE_I1	= 16,
        DBTYPE_UI2	= 18,
        DBTYPE_UI4	= 19,
        DBTYPE_I8	= 20,
        DBTYPE_UI8	= 21,
        DBTYPE_GUID	= 72,
        DBTYPE_VECTOR	= 0x1000,
        DBTYPE_RESERVED	= 0x8000,
        DBTYPE_BYTES	= 128,
        DBTYPE_STR	= 129,
        DBTYPE_WSTR	= 130,
        DBTYPE_NUMERIC	= 131,
        DBTYPE_UDT	= 132,
        DBTYPE_DBDATE	= 133,
        DBTYPE_DBTIME	= 134,
        DBTYPE_DBTIMESTAMP	= 135

        ADO Types

           adEmpty	= 0,
        adTinyInt	= 16,
        adSmallInt	= 2,
        adInteger	= 3,
        adBigInt	= 20,
        adUnsignedTinyInt	= 17,
        adUnsignedSmallInt	= 18,
        adUnsignedInt	= 19,
        adUnsignedBigInt	= 21,
        adSingle	= 4,
        adDouble	= 5,
        adCurrency	= 6,
        adDecimal	= 14,
        adNumeric	= 131,
        adBoolean	= 11,
        adError	= 10,
        adUserDefined	= 132,
        adVariant	= 12,
        adIDispatch	= 9,
        adIUnknown	= 13,
        adGUID	= 72,
        adDate	= 7,
        adDBDate	= 133,
        adDBTime	= 134,
        adDBTimeStamp	= 135,
        adBSTR	= 8,
        adChar	= 129,
        adVarChar	= 200,
        adLongVarChar	= 201,
        adWChar	= 130,
        adVarWChar	= 202,
        adLongVarWChar	= 203,
        adBinary	= 128,
        adVarBinary	= 204,
        adLongVarBinary	= 205,
        adChapter	= 136,
        adFileTime	= 64,
        adDBFileTime	= 137,
        adPropVariant	= 138,
        adVarNumeric	= 139
    */
    function MetaType($t, $len = -1, $fieldobj = false)
    {
        if (is_object($t)) {
            $fieldobj = $t;
            $t = $fieldobj->type;
            $len = $fieldobj->max_length;
        }

        if (!is_numeric($t)) return $t;

        switch ($t) {
            case 0:
            case 12: // variant
            case 8: // bstr
            case 129: //char
            case 130: //wc
            case 200: // varc
            case 202: // varWC
            case 128: // bin
            case 204: // varBin
            case 72: // guid
                if ($len <= $this->blobSize) return 'C';

            case 201:
            case 203:
                return 'X';
            case 128:
            case 204:
            case 205:
                return 'B';
            case 7:
            case 133:
                return 'D';

            case 134:
            case 135:
                return 'T';

            case 11:
                return 'L';

            case 16: //	adTinyInt	= 16,
            case 2: //adSmallInt	= 2,
            case 3: //adInteger	= 3,
            case 4: //adBigInt	= 20,
            case 17: //adUnsignedTinyInt	= 17,
            case 18: //adUnsignedSmallInt	= 18,
            case 19: //adUnsignedInt	= 19,
            case 20: //adUnsignedBigInt	= 21,
                return 'I';
            default:
                return 'N';
        }
    }

    // time stamp not supported yet
    function _fetch()
    {
        $rs = $this->_queryID;
        if (!$rs or $rs->EOF) {
            $this->fields = false;
            return false;
        }
        $this->fields = array();

        if (!$this->_tarr) {
            $tarr = array();
            $flds = array();
            for ($i = 0, $max = $this->_numOfFields; $i < $max; $i++) {
                $f = $rs->Fields($i);
                $flds[] = $f;
                $tarr[] = $f->Type;
            }
            // bind types and flds only once
            $this->_tarr = $tarr;
            $this->_flds = $flds;
        }
        $t = reset($this->_tarr);
        $f = reset($this->_flds);

        if ($this->hideErrors) $olde = error_reporting(E_ERROR | E_CORE_ERROR); // sometimes $f->value be null
        for ($i = 0, $max = $this->_numOfFields; $i < $max; $i++) {

            switch ($t) {
                case 135: // timestamp
                    if (!strlen((string)$f->value)) $this->fields[] = false;
                    else $this->fields[] = adodb_date('Y-m-d H:i:s', (float)$f->value);
                    break;
                case 133: // A date value (yyyymmdd)
                    if ($val = $f->value) {
                        $this->fields[] = substr($val, 0, 4) . '-' . substr($val, 4, 2) . '-' . substr($val, 6, 2);
                    } else
                        $this->fields[] = false;
                    break;
                case 7: // adDate
                    if (!strlen((string)$f->value)) $this->fields[] = false;
                    else $this->fields[] = adodb_date('Y-m-d', (float)$f->value);
                    break;
                case 1: // null
                    $this->fields[] = false;
                    break;
                case 6: // currency is not supported properly;
                    ADOConnection::outp('<b>' . $f->Name . ': currency type not supported by PHP</b>');
                    $this->fields[] = (float)$f->value;
                    break;
                default:
                    $this->fields[] = $f->value;
                    break;
            }
            //print " $f->value $t, ";
            $f = next($this->_flds);
            $t = next($this->_tarr);
        } // for
        if ($this->hideErrors) error_reporting($olde);
        @$rs->MoveNext(); // @ needed for some versions of PHP!

        if ($this->fetchMode & ADODB_FETCH_ASSOC) {
            $this->fields = &$this->GetRowAssoc(ADODB_ASSOC_CASE);
        }
        return true;
    }

    function NextRecordSet()
    {
        $rs = $this->_queryID;
        $this->_queryID = $rs->NextRecordSet();
        //$this->_queryID = $this->_QueryId->NextRecordSet();
        if ($this->_queryID == null) return false;

        $this->_currentRow = -1;
        $this->_currentPage = -1;
        $this->bind = false;
        $this->fields = false;
        $this->_flds = false;
        $this->_tarr = false;

        $this->_inited = false;
        $this->Init();
        return true;
    }

    function _close()
    {
        $this->_flds = false;
        @$this->_queryID->Close(); // by Pete Dishman (peterd@telephonetics.co.uk)
        $this->_queryID = false;
    }

}