mirror of
https://github.com/EGroupware/egroupware.git
synced 2024-12-26 16:48:49 +01:00
533 lines
12 KiB
PHP
533 lines
12 KiB
PHP
<?php
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/**************************************************************************\
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* phpGroupWare API - *
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* Copyright (c) 1998,1999 SH Online Dienst GmbH Boris Erdmann, *
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* Kristian Koehntopp *
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* ------------------------------------------------------------------------ *
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* This is not part of phpGroupWare, but is used by phpGroupWare. *
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* http://www.phpgroupware.org/ *
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* ------------------------------------------------------------------------ *
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* This program is free software; you can redistribute it and/or modify it *
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* under the terms of the GNU Lesser General Public License as published *
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* by the Free Software Foundation; either version 2.1 of the License, or *
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* any later version. *
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\**************************************************************************/
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/* $Id$ */
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class db
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{
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var $Host = '';
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var $Database = '';
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var $User = '';
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var $Password = '';
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var $use_pconnect = False;
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var $auto_stripslashes = False;
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/* "yes" (halt with message), "no" (ignore errors quietly), "report" (ignore errror, but spit a warning) */
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var $Halt_On_Error = 'yes';
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var $Link_ID = 0;
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var $Query_ID = 0;
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var $Record = array();
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var $Row = 0;
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var $Seq_Table = 'db_sequence';
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var $Errno = 0;
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var $Error = '';
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/* Set this to 1 for automatic pg_freeresult on last record. */
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var $Auto_Free = 0;
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// PostgreSQL changed somethings from 6.x -> 7.x
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var $db_version;
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function ifadd($add, $me)
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{
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if('' != $add) return ' ' . $me . $add;
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}
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/* public: constructor */
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function db($query = '')
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{
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$this->query($query);
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}
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function connect()
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{
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if (0 == $this->Link_ID)
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{
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$cstr = 'dbname=' . $this->Database
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. $this->ifadd($this->Host, 'host=')
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. $this->ifadd($this->Port, 'port=')
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. $this->ifadd($this->User, 'user=')
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. $this->ifadd("'".$this->Password."'", 'password=');
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if ($this->use_pconnect)
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{
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$this->Link_ID=pg_pconnect($cstr);
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}
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else
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{
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$this->Link_ID=pg_connect($cstr);
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}
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if (! $this->Link_ID)
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{
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$this->halt('Link-ID == false, pconnect failed');
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}
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else
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{
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$this->query("select version()",__LINE__,__FILE__);
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$this->next_record();
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$version = $this->f('version');
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$parts = explode(' ',$version);
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$this->db_version = $parts[1];
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}
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}
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}
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function to_timestamp($epoch)
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{
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$db_version = $this->db_version;
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if (floor($db_version) == 6)
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{
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return $this->to_timestamp_6($epoch);
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}
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else
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{
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return $this->to_timestamp_7($epoch);
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}
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}
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function from_timestamp($timestamp)
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{
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if (floor($this->db_version) == 6)
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{
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return $this->from_timestamp_6($timestamp);
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}
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else
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{
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return $this->from_timestamp_7($timestamp);
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}
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}
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// For PostgreSQL 6.x
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function to_timestamp_6($epoch)
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{
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}
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// For PostgreSQL 6.x
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function from_timestamp_6($timestamp)
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{
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}
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// For PostgreSQL 7.x
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function to_timestamp_7($epoch)
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{
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// This needs the GMT offset!
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return date('Y-m-d H:i:s-00',$epoch);
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}
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// For PostgreSQL 7.x
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function from_timestamp_7($timestamp)
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{
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ereg('([0-9]{4})-([0-9]{2})-([0-9]{2}) ([0-9]{2}):([0-9]{2}):([0-9]{2})',$timestamp,$parts);
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return mktime($parts[4],$parts[5],$parts[6],$parts[2],$parts[3],$parts[1]);
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}
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function limit($start)
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{
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echo '<b>Warning: limit() is no longer used, use limit_query()</b>';
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if ($start == 0)
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{
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$s = 'limit ' . $GLOBALS['phpgw_info']['user']['preferences']['common']['maxmatchs'];
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}
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else
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{
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$s = 'limit ' . $GLOBALS['phpgw_info']['user']['preferences']['common']['maxmatchs'] . ',' . $start;
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}
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return $s;
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}
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/* This only affects systems not using persistant connections */
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function disconnect()
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{
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return @pg_close($this->Link_ID);
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}
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function db_addslashes($str)
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{
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if (!IsSet($str) || $str == '')
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return '';
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return addslashes($str);
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}
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/* I added the line and file section so we can have better error reporting. (jengo) */
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function query($Query_String, $line = '', $file = '')
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{
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/* No empty queries, please, since PHP4 chokes on them. */
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/* The empty query string is passed on from the constructor,
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* when calling the class without a query, e.g. in situations
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* like these: '$db = new db_Subclass;'
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*/
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if ($Query_String == '')
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{
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return 0;
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}
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$this->connect();
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/* printf("<br>Debug: query = %s<br>\n", $Query_String); */
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$this->Query_ID = pg_Exec($this->Link_ID, $Query_String);
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$this->Row = 0;
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$this->Error = pg_ErrorMessage($this->Link_ID);
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$this->Errno = ($this->Error == '') ? 0 : 1;
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if (! $this->Query_ID)
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{
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$this->halt('Invalid SQL: ' . $Query_String, $line, $file);
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}
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return $this->Query_ID;
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}
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/* public: perform a query with limited result set */
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function limit_query($Query_String, $offset, $line = '', $file = '', $num_rows = '')
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{
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if (! $num_rows)
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{
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$num_rows = $GLOBALS['phpgw_info']['user']['preferences']['common']['maxmatchs'];
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}
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if ($offset == 0)
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{
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$Query_String .= ' LIMIT ' . $num_rows;
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}
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else
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{
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$Query_String .= ' LIMIT ' . $num_rows . ',' . $offset;
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}
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if ($this->Debug)
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{
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printf("Debug: limit_query = %s<br>offset=%d, num_rows=%d<br>\n", $Query_String, $offset, $num_rows);
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}
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return $this->query($Query_String, $line, $file);
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}
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// public: discard the query result
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function free()
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{
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@pg_freeresult($this->Query_ID);
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$this->Query_ID = 0;
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}
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function next_record()
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{
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$this->Record = @pg_fetch_array($this->Query_ID, $this->Row++);
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$this->Error = pg_ErrorMessage($this->Link_ID);
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$this->Errno = ($this->Error == '') ? 0 : 1;
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$stat = is_array($this->Record);
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if (!$stat && $this->Auto_Free)
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{
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pg_freeresult($this->Query_ID);
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$this->Query_ID = 0;
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}
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return $stat;
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}
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function seek($pos)
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{
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$this->Row = $pos;
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}
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function transaction_begin()
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{
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return $this->query('begin');
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}
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function transaction_commit()
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{
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if (! $this->Errno)
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{
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return pg_Exec($this->Link_ID,'commit');
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}
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else
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{
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return False;
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}
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}
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function transaction_abort()
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{
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return pg_Exec($this->Link_ID,'rollback');
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}
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function get_last_insert_id($table, $field)
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{
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/* This will get the last insert ID created on the current connection. Should only be called
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* after an insert query is run on a table that has an auto incrementing field. Of note, table
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* and field are required because pgsql returns the last inserted OID, which is unique across
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* an entire installation. These params allow us to retrieve the sequenced field without adding
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* conditional code to the apps.
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*/
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if (!isset($table) || $table == '' || !isset($field) || $field == '')
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return -1;
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$oid = pg_getlastoid($this->Query_ID);
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if ($oid == -1)
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return -1;
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$result = @pg_Exec($this->Link_ID, "select $field from $table where oid=$oid");
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if (!$result)
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return -1;
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$Record = @pg_fetch_array($result, 0);
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@pg_freeresult($result);
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if (!is_array($Record)) /* OID not found? */
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return -1;
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return $Record[0];
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}
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function lock($table, $mode = 'write')
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{
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$result = $this->transaction_begin();
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if ($mode == 'write')
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{
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if (is_array($table))
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{
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while ($t = each($table))
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{
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$result = pg_Exec($this->Link_ID,'lock table ' . $t[1] . ' in share mode');
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}
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}
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else
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{
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$result = pg_Exec($this->Link_ID, 'lock table ' . $table . ' in share mode');
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}
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}
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else
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{
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$result = 1;
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}
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return $result;
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}
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function unlock()
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{
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return $this->transaction_commit();
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}
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/* public: sequence numbers */
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function nextid($seq_name)
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{
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$this->connect();
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if ($this->lock($this->Seq_Table))
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{
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/* get sequence number (locked) and increment */
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$q = sprintf("select nextid from %s where seq_name = '%s'",
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$this->Seq_Table,
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$seq_name);
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$id = @pg_Exec($this->Link_ID, $q);
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$res = @pg_Fetch_Array($id, 0);
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/* No current value, make one */
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if (!is_array($res))
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{
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$currentid = 0;
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$q = sprintf("insert into %s values('%s', %s)",
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$this->Seq_Table,
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$seq_name,
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$currentid);
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$id = @pg_Exec($this->Link_ID, $q);
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}
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else
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{
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$currentid = $res['nextid'];
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}
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$nextid = $currentid + 1;
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$q = sprintf("update %s set nextid = '%s' where seq_name = '%s'",
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$this->Seq_Table,
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$nextid,
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$seq_name);
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$id = @pg_Exec($this->Link_ID, $q);
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$this->unlock();
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}
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else
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{
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$this->halt('cannot lock ' . $this->Seq_Table . ' - has it been created?');
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return 0;
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}
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return $nextid;
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}
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function metadata($table)
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{
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$count = 0;
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$id = 0;
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$res = array();
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$this->connect();
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$id = pg_exec($this->Link_ID, "select * from $table");
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if ($id < 0)
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{
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$this->Error = pg_ErrorMessage($id);
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$this->Errno = 1;
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$this->halt('Metadata query failed.');
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}
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$count = pg_NumFields($id);
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for ($i=0; $i<$count; $i++)
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{
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$res[$i]['table'] = $table;
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$res[$i]['name'] = pg_FieldName ($id, $i);
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$res[$i]['type'] = pg_FieldType ($id, $i);
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$res[$i]['len'] = pg_FieldSize ($id, $i);
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$res[$i]['flags'] = '';
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}
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pg_FreeResult($id);
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return $res;
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}
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function affected_rows()
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{
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return pg_cmdtuples($this->Query_ID);
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}
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function num_rows()
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{
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return pg_numrows($this->Query_ID);
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}
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function num_fields()
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{
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return pg_numfields($this->Query_ID);
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}
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function nf()
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{
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return $this->num_rows();
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}
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function np()
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{
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print $this->num_rows();
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}
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function f($Name,$strip_slashes = '')
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{
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if ($strip_slashes || ($this->auto_stripslashes && ! $strip_slashes))
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{
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return stripslashes($this->Record[$Name]);
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}
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else
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{
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return $this->Record[$Name];
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}
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}
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function p($Name)
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{
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print $this->Record[$Name];
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}
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function halt($msg, $line = "", $file = "")
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{
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if($this->Halt_On_Error == "no")
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{
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return;
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}
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/* Just in case there is a table currently locked */
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$this->unlock();
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printf("<b>Database error:</b> %s<br>\n", $msg);
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printf("<b>PostgreSQL Error</b>: %s (%s)<br>\n",
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$this->Errno,
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$this->Error);
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if ($file)
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{
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printf("<br><b>File:</b> %s",$file);
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}
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if ($line)
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{
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printf("<br><b>Line:</b> %s",$line);
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}
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if ($this->Halt_On_Error == 'yes')
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{
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echo '<p><b>Session halted.</b>';
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$GLOBALS['phpgw']->common->phpgw_exit(True);
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}
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}
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function table_names()
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{
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$this->query("select relname from pg_class where relkind = 'r' and not relname like 'pg_%'");
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$i=0;
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while ($this->next_record())
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{
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$return[$i]['table_name']= $this->f(0);
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$return[$i]['tablespace_name']=$this->Database;
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$return[$i]['database']=$this->Database;
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$i++;
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}
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return $return;
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}
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function create_database($adminname = '', $adminpasswd = '')
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{
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$currentUser = $this->User;
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$currentPassword = $this->Password;
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$currentDatabase = $this->Database;
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if ($adminname != "")
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{
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$this->User = $adminname;
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$this->Password = $adminpasswd;
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}
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if (! $this->Host)
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{
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system('createdb ' . $currentDatabase, $outval);
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}
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else
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{
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system('createdb -h ' . $this->Host . ' ' . $currentDatabase, $outval);
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}
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if($outval != 0)
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{
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/* either the rights r not available or the postmaster is not running .... */
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echo 'database creation failure <BR>';
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echo 'please setup the postreSQL database manually<BR>';
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}
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$this->User = $currentUser;
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$this->Password = $currentPassword;
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$this->Database = $currentDatabase;
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$this->connect();
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//return $return;
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}
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}
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