You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
473 lines
12 KiB
473 lines
12 KiB
<?php
|
|
/*
|
|
* Session Management for PHP3
|
|
*
|
|
* Copyright (c) 1998-2000 NetUSE AG
|
|
* Boris Erdmann, Kristian Koehntopp
|
|
*
|
|
* $Id: mysql.class.inc,v 1.12 2005/04/08 07:23:10 mschering Exp $
|
|
*
|
|
*/
|
|
|
|
class db {
|
|
|
|
/* public: connection parameters */
|
|
var $Host = "";
|
|
var $Database = "";
|
|
var $User = "";
|
|
var $Password = "";
|
|
|
|
/* public: configuration parameters */
|
|
var $Auto_Free = 0; ## Set to 1 for automatic mysql_free_result()
|
|
var $Debug = 0; ## Set to 1 for debugging messages.
|
|
var $Halt_On_Error = "yes"; ## "yes" (halt with message), "no" (ignore errors quietly), "report" (ignore errror, but spit a warning)
|
|
var $PConnect = 0; ## Set to 1 to use persistent database connections
|
|
var $Seq_Table = "db_sequence";
|
|
|
|
/* public: result array and current row number */
|
|
var $Record = array();
|
|
var $Row;
|
|
|
|
/* public: current error number and error text */
|
|
var $Errno = 0;
|
|
var $Error = "";
|
|
|
|
/* public: this is an api revision, not a CVS revision. */
|
|
var $type = "mysql";
|
|
var $revision = "1.2";
|
|
|
|
/* private: link and query handles */
|
|
var $Link_ID = 0;
|
|
var $Query_ID = 0;
|
|
|
|
var $locked = false; ## set to true while we have a lock
|
|
|
|
/* public: constructor */
|
|
function db($query = "") {
|
|
|
|
global $GO_CONFIG;
|
|
if (isset($GO_CONFIG->db_host)) {
|
|
$this->Host = $GO_CONFIG->db_host;
|
|
}
|
|
if (isset($GO_CONFIG->db_name)) {
|
|
$this->Database = $GO_CONFIG->db_name;
|
|
}
|
|
if (isset($GO_CONFIG->db_user)) {
|
|
$this->User = $GO_CONFIG->db_user;
|
|
}
|
|
if (isset($GO_CONFIG->db_pass)) {
|
|
$this->Password = $GO_CONFIG->db_pass;
|
|
}
|
|
$this->query($query);
|
|
}
|
|
|
|
/* public: some trivial reporting */
|
|
function link_id() {
|
|
return $this->Link_ID;
|
|
}
|
|
|
|
function query_id() {
|
|
return $this->Query_ID;
|
|
}
|
|
|
|
/* public: connection management */
|
|
function connect($Database = "", $Host = "", $User = "", $Password = "") {
|
|
/* Handle defaults */
|
|
if ("" == $Database)
|
|
$Database = $this->Database;
|
|
if ("" == $Host)
|
|
$Host = $this->Host;
|
|
if ("" == $User)
|
|
$User = $this->User;
|
|
if ("" == $Password)
|
|
$Password = $this->Password;
|
|
|
|
/* establish connection, select database */
|
|
if ( 0 == $this->Link_ID ) {
|
|
|
|
|
|
if(!$this->PConnect) {
|
|
$this->Link_ID = mysql_connect($Host, $User, $Password);
|
|
} else {
|
|
$this->Link_ID = mysql_pconnect($Host, $User, $Password);
|
|
}
|
|
if (!$this->Link_ID) {
|
|
$this->halt("connect($Host, $User, \$Password) failed.");
|
|
return 0;
|
|
}
|
|
|
|
if (!@mysql_select_db($Database,$this->Link_ID)) {
|
|
$this->halt("cannot use database ".$Database);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return $this->Link_ID;
|
|
}
|
|
|
|
/* public: discard the query result */
|
|
function free() {
|
|
@mysql_free_result($this->Query_ID);
|
|
$this->Query_ID = 0;
|
|
}
|
|
|
|
/* public: perform a query */
|
|
function query($Query_String) {
|
|
/* No empty queries, please, since PHP4 chokes on them. */
|
|
if ($Query_String == "")
|
|
/* The empty query string is passed on from the constructor,
|
|
* when calling the class without a query, e.g. in situations
|
|
* like these: '$db = new DB_Sql_Subclass;'
|
|
*/
|
|
return 0;
|
|
|
|
if (!$this->connect()) {
|
|
return 0; /* we already complained in connect() about that. */
|
|
};
|
|
|
|
# New query, discard previous result.
|
|
if ($this->Query_ID) {
|
|
$this->free();
|
|
}
|
|
|
|
if ($this->Debug)
|
|
printf("Debug: query = %s<br>\n", $Query_String);
|
|
|
|
$this->Query_ID = @mysql_query($Query_String,$this->Link_ID);
|
|
$this->Row = 0;
|
|
$this->Errno = mysql_errno();
|
|
$this->Error = mysql_error();
|
|
if (!$this->Query_ID) {
|
|
$this->halt("Invalid SQL: ".$Query_String);
|
|
}
|
|
|
|
# Will return nada if it fails. That's fine.
|
|
return $this->Query_ID;
|
|
}
|
|
|
|
/* public: walk result set */
|
|
function next_record($result_type=MYSQL_BOTH) {
|
|
if (!$this->Query_ID) {
|
|
$this->halt("next_record called with no query pending.");
|
|
return 0;
|
|
}
|
|
|
|
$this->Record = @mysql_fetch_array($this->Query_ID, $result_type);
|
|
$this->Row += 1;
|
|
$this->Errno = mysql_errno();
|
|
$this->Error = mysql_error();
|
|
|
|
$stat = is_array($this->Record);
|
|
if (!$stat && $this->Auto_Free) {
|
|
$this->free();
|
|
}
|
|
return $stat;
|
|
}
|
|
|
|
/* public: position in result set */
|
|
function seek($pos = 0) {
|
|
$status = @mysql_data_seek($this->Query_ID, $pos);
|
|
if ($status)
|
|
$this->Row = $pos;
|
|
else {
|
|
$this->halt("seek($pos) failed: result has ".$this->num_rows()." rows.");
|
|
|
|
/* half assed attempt to save the day,
|
|
* but do not consider this documented or even
|
|
* desireable behaviour.
|
|
*/
|
|
@mysql_data_seek($this->Query_ID, $this->num_rows());
|
|
$this->Row = $this->num_rows();
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* public: table locking */
|
|
function lock($table, $mode = "write") {
|
|
$query = "lock tables ";
|
|
if(is_array($table)) {
|
|
while(list($key,$value) = each($table)) {
|
|
// text keys are "read", "read local", "write", "low priority write"
|
|
if(is_int($key)) $key = $mode;
|
|
if(strpos($value, ",")) {
|
|
$query .= str_replace(",", " $key, ", $value) . " $key, ";
|
|
} else {
|
|
$query .= "$value $key, ";
|
|
}
|
|
}
|
|
$query = substr($query, 0, -2);
|
|
} elseif(strpos($table, ",")) {
|
|
$query .= str_replace(",", " $mode, ", $table) . " $mode";
|
|
} else {
|
|
$query .= "$table $mode";
|
|
}
|
|
if(!$this->query($query)) {
|
|
$this->halt("lock() failed.");
|
|
return false;
|
|
}
|
|
$this->locked = true;
|
|
return true;
|
|
}
|
|
|
|
function unlock() {
|
|
|
|
// set before unlock to avoid potential loop
|
|
$this->locked = false;
|
|
|
|
if(!$this->query("unlock tables")) {
|
|
$this->halt("unlock() failed.");
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/* public: evaluate the result (size, width) */
|
|
function affected_rows() {
|
|
return @mysql_affected_rows($this->Link_ID);
|
|
}
|
|
|
|
function num_rows() {
|
|
return @mysql_num_rows($this->Query_ID);
|
|
}
|
|
|
|
function num_fields() {
|
|
return @mysql_num_fields($this->Query_ID);
|
|
}
|
|
|
|
/* public: shorthand notation */
|
|
function nf() {
|
|
return $this->num_rows();
|
|
}
|
|
|
|
function np() {
|
|
print $this->num_rows();
|
|
}
|
|
|
|
function f($Name) {
|
|
if (isset($this->Record[$Name])) {
|
|
return $this->Record[$Name];
|
|
}
|
|
}
|
|
|
|
function p($Name) {
|
|
if (isset($this->Record[$Name])) {
|
|
print $this->Record[$Name];
|
|
}
|
|
}
|
|
|
|
/* public: sequence numbers */
|
|
function nextid($seq_name) {
|
|
/* if no current lock, lock sequence table */
|
|
if(!$this->locked) {
|
|
if($this->lock($this->Seq_Table)) {
|
|
$locked = true;
|
|
} else {
|
|
$this->halt("cannot lock ".$this->Seq_Table." - has it been created?");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* get sequence number and increment */
|
|
$q = sprintf("select nextid from %s where seq_name = '%s'",
|
|
$this->Seq_Table,
|
|
$seq_name);
|
|
if(!$this->query($q)) {
|
|
$this->halt('query failed in nextid: '.$q);
|
|
return 0;
|
|
}
|
|
|
|
/* No current value, make one */
|
|
if(!$this->next_record()) {
|
|
$currentid = 0;
|
|
$q = sprintf("insert into %s values('%s', %s)",
|
|
$this->Seq_Table,
|
|
$seq_name,
|
|
$currentid);
|
|
if(!$this->query($q)) {
|
|
$this->halt('query failed in nextid: '.$q);
|
|
return 0;
|
|
}
|
|
} else {
|
|
$currentid = $this->f("nextid");
|
|
}
|
|
$nextid = $currentid + 1;
|
|
$q = sprintf("update %s set nextid = '%s' where seq_name = '%s'",
|
|
$this->Seq_Table,
|
|
$nextid,
|
|
$seq_name);
|
|
if(!$this->query($q)) {
|
|
$this->halt('query failed in nextid: '.$q);
|
|
return 0;
|
|
}
|
|
|
|
/* if nextid() locked the sequence table, unlock it */
|
|
if($locked) {
|
|
$this->unlock();
|
|
}
|
|
|
|
return $nextid;
|
|
}
|
|
|
|
/* public: return table metadata */
|
|
function metadata($table = "", $full = false) {
|
|
$count = 0;
|
|
$id = 0;
|
|
$res = array();
|
|
|
|
/*
|
|
* Due to compatibility problems with Table we changed the behavior
|
|
* of metadata();
|
|
* depending on $full, metadata returns the following values:
|
|
*
|
|
* - full is false (default):
|
|
* $result[]:
|
|
* [0]["table"] table name
|
|
* [0]["name"] field name
|
|
* [0]["type"] field type
|
|
* [0]["len"] field length
|
|
* [0]["flags"] field flags
|
|
*
|
|
* - full is true
|
|
* $result[]:
|
|
* ["num_fields"] number of metadata records
|
|
* [0]["table"] table name
|
|
* [0]["name"] field name
|
|
* [0]["type"] field type
|
|
* [0]["len"] field length
|
|
* [0]["flags"] field flags
|
|
* ["meta"][field name] index of field named "field name"
|
|
* This last one could be used if you have a field name, but no index.
|
|
* Test: if (isset($result['meta']['myfield'])) { ...
|
|
*/
|
|
|
|
// if no $table specified, assume that we are working with a query
|
|
// result
|
|
if ($table) {
|
|
$this->connect();
|
|
$id = @mysql_list_fields($this->Database, $table);
|
|
if (!$id) {
|
|
$this->halt("Metadata query failed.");
|
|
return false;
|
|
}
|
|
} else {
|
|
$id = $this->Query_ID;
|
|
if (!$id) {
|
|
$this->halt("No query specified.");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
$count = @mysql_num_fields($id);
|
|
|
|
// made this IF due to performance (one if is faster than $count if's)
|
|
if (!$full) {
|
|
for ($i=0; $i<$count; $i++) {
|
|
$res[$i]["table"] = @mysql_field_table ($id, $i);
|
|
$res[$i]["name"] = @mysql_field_name ($id, $i);
|
|
$res[$i]["type"] = @mysql_field_type ($id, $i);
|
|
$res[$i]["len"] = @mysql_field_len ($id, $i);
|
|
$res[$i]["flags"] = @mysql_field_flags ($id, $i);
|
|
}
|
|
} else { // full
|
|
$res["num_fields"]= $count;
|
|
|
|
for ($i=0; $i<$count; $i++) {
|
|
$res[$i]["table"] = @mysql_field_table ($id, $i);
|
|
$res[$i]["name"] = @mysql_field_name ($id, $i);
|
|
$res[$i]["type"] = @mysql_field_type ($id, $i);
|
|
$res[$i]["len"] = @mysql_field_len ($id, $i);
|
|
$res[$i]["flags"] = @mysql_field_flags ($id, $i);
|
|
$res["meta"][$res[$i]["name"]] = $i;
|
|
}
|
|
}
|
|
|
|
// free the result only if we were called on a table
|
|
if ($table) {
|
|
@mysql_free_result($id);
|
|
}
|
|
return $res;
|
|
}
|
|
|
|
/* public: find available table names */
|
|
function table_names() {
|
|
$this->connect();
|
|
$h = @mysql_query("show tables", $this->Link_ID);
|
|
$i = 0;
|
|
while ($info = @mysql_fetch_row($h)) {
|
|
$return[$i]["table_name"] = $info[0];
|
|
$return[$i]["tablespace_name"] = $this->Database;
|
|
$return[$i]["database"] = $this->Database;
|
|
$i++;
|
|
}
|
|
|
|
@mysql_free_result($h);
|
|
return $return;
|
|
}
|
|
|
|
/* private: error handling */
|
|
function halt($msg) {
|
|
$this->Error = @mysql_error($this->Link_ID);
|
|
$this->Errno = @mysql_errno($this->Link_ID);
|
|
|
|
if ($this->locked) {
|
|
$this->unlock();
|
|
}
|
|
|
|
if ($this->Halt_On_Error == "no")
|
|
return;
|
|
|
|
$this->haltmsg($msg);
|
|
|
|
if ($this->Halt_On_Error != "report")
|
|
die("Session halted.");
|
|
}
|
|
|
|
function haltmsg($msg) {
|
|
go_log(LOG_DEBUG, sprintf("<b>MySQL Error</b>: %s (%s)<br>\n",
|
|
$this->Errno,
|
|
$this->Error));
|
|
printf("</td></tr></table><b>Database error:</b> %s<br>\n", $msg);
|
|
printf("<b>MySQL Error</b>: %s (%s)<br>\n",
|
|
$this->Errno,
|
|
$this->Error);
|
|
}
|
|
function update_row($table, $index, $fields)
|
|
{
|
|
if(isset($fields[$index]))
|
|
{
|
|
foreach($fields as $key => $value)
|
|
{
|
|
if($key != $index)
|
|
{
|
|
$updates[] = "`$key`='$value'";
|
|
}
|
|
}
|
|
if(isset($updates))
|
|
{
|
|
$sql = "UPDATE `$table` SET ".implode(',',$updates)." WHERE `$index`='".$fields[$index]."'";
|
|
return $this->query($sql);
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function insert_row($table, $fields)
|
|
{
|
|
foreach($fields as $key => $value)
|
|
{
|
|
$field_names[] = $key;
|
|
$field_values[] = $value;
|
|
}
|
|
if(isset($field_names))
|
|
{
|
|
$sql = "INSERT INTO `$table` (".implode(',', $field_names).") VALUES ".
|
|
"('".implode("','", $field_values)."')";
|
|
|
|
return $this->query($sql);
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
?>
|
|
|