Problem with PHP 4.2.2 and Postaci webmail - PLEASE HELP

[ivo]

Hi,

After using sucessfully the Postaci webmail system for some months it stopped working after the upgrade to PHP 4.2.2
There is some problem with the user validation script. Could someone offer help in fixing it, because I know nothing of PHP. I cannot change anything in the PHP instalation since we use a hosting service.

The author of the script does not respond. The problem scrpt appears below:

---

<?
/
File name : validate_login.php
Version : 1.1.1
Last Modified By : Umut Gokbayrak
e-mail : [e-mail]
Purpose : Connects imap/pop3 port to see if
given username, password information is
valid. If it is the first login for any
POP3 account it creates the needed rows in the database for
the folder simulation. If all is OK, it
redirects user to mailbox.php
Last modified : 31 Oct 2000
/

include ("includes/global.inc");
include ("$postaci_directory" . "classes/imap_pop3.inc");
include ("$postaci_directory" . "classes/userclass.inc");
include ("$postaci_directory" . "classes/mailbox.inc");

session_start();

// Generating a random unique!!! alphanumeric
mt_srand((double)microtime()*10000);
//$ID = md5(mt_rand(1,60000));
$ID = $txtusername . md5(microtime());
$ID=ereg_replace("/","X",$ID);

// Session Management
session_register('ID');

// Authenticating user
$mbox_id = "INBOX";
$email=new imap_pop3($default_port,$default_protocol,$default_host,$txtusername,$txtpassword,$mbox_id);
if ($email->authenticate()) {

//Check to see if this is the first login.
$user_id = 0;
$dbq = $db->execute("select user_id from tblUsers where username = '$txtusername'");
$user_id = $dbq->fields['user_id'];
$dbq->close();

$dbq = $db->execute("select " . $default_protocol . "count from tblUsers where username = '$txtusername'");
$visit_count = $dbq->fields[$default_protocol . 'count'];
$dbq->close();

$qdate = date('Y-m-d');
$qtime = date('H:i');

if ($visit_count == 0) {
if ($user_id == 0) { // User doesn't exist in tblUsers... (s)he didn' t log in before.
$user = new userclass();
$dbq = $db->execute("select user_id from tblUsers order by user_id asc");
$dbq->lastRow();
$user_id = $dbq->fields['user_id'];
$dbq->close();
$user_id++;

  // Find user' s domain_id
  $domain_id = $user->findUserDomainID($txtusername);
  // adding user to tblUsers with default values.
  $dbq = $db->execute("insert into tblUsers values($user_id,'$txtusername','$txtpassword','',$domain_id,'$qdate','$REMOTE_ADDR',0,0,'',0,0,0,0,0,0,'','','','','','','','','','','','')");
  $dbq->close();
}

if ($default_protocol == "pop3") {
  // creating default database mailboxes for POP3 access.
  $mbox = new mailbox();
  $mbox_id = $mbox->findMaxMboxID() + 1;
  $dbq = $db->execute("insert into tblMailBoxes values($mbox_id,$user_id,'$text7',1)");
  $mbox_id++;
  $dbq = $db->execute("insert into tblMailBoxes values($mbox_id,$user_id,'$text8',2)");
  $dbq->close();
} else {
  $mbox2 = imap_open("{" . $default_host . "/" . $default_protocol . "}", $txtusername, $txtpassword);

  if ($mbox2) {

    $folders = $email->getMailboxes();
    $folder_names = array();
    $folder_counter=-1;
    $sent_item_exists = 0;
    $draft_exists = 0;
    while (list($key,$val) = each($folders["name"])) {
      $folder_counter++;
      $folder_names[$folder_counter] = $val;
      if ($folder_names[$folder_counter] == "Sent Items") {
        $sent_item_exists = 1;
      }
      if ($folder_names[$folder_counter] == "Drafts") {
        $draft_exists = 1;
      }
    }

    $sonuc = imap_createmailbox($mbox2, "{" . $default_host . "}INBOX");
    $sonuc = imap_subscribe($mbox2, "{" . $default_host . "}INBOX");

    if ($sent_item_exists == 0) {
      imap_createmailbox($mbox2, "{" . $default_host . "}Sent Items");
      imap_subscribe($mbox2, "{" . $default_host . "}Sent Items");
    }
    if ($draft_exists == 0) {
      imap_createmailbox($mbox2, "{" . $default_host . "}Drafts");
      imap_subscribe($mbox2, "{" . $default_host . "}Drafts");
    }
  }
}

$f = 1;                        // First time visitors shall see preferences screen when they enter...

} // end if

// We take a log of user details in tblLoggedUsers. This table will be used for gathering username and password.
$dbq = $db->execute("select log_id from tblLoggedUsers");
$dbq->lastrow();
$log_id = $dbq->fields['log_id'];
$dbq->close();
$log_id++;
$dbq = $db->execute("insert into tblLoggedUsers values($log_id,'$txtusername','$txtpassword','$ID','$REMOTE_ADDR','$qdate','$qtime','$user_id',0,0,'','')");
$dbq->close();

// Update the database mailbox names in tblMailboxes for POP3
if ($default_protocol == "pop3") {
$dbq = $db->execute("update tblMailBoxes set mboxname='$text7' where user_id = $user_id and mbox_type = 1");
$dbq = $db->execute("update tblMailBoxes set mboxname='$text8' where user_id = $user_id and mbox_type = 2");
}

$dbq = $db->execute("select " . $default_protocol . "count from tblUsers where username = '$txtusername'");
$visit_count = $dbq->fields[$default_protocol . 'count'];
$visit_count++;
$dbq = $db->execute("update tblUsers set " . $default_protocol . "_count=$visit_count where username = '$txtusername'");
$dbq->close();

Header("Location: mailbox.php?mbox_id=INBOX&f=$f");

} else {
Header("Location: index.php?error_id=1");
}

?>