added invalid email address handling

htdocs/lib2/common.inc.php

@@ -95,6 +95,17 @@ function __autoload($class_name)
 	if (function_exists('post_config'))
 		post_config();
 
+	// check for email address problems
+	// use direct database access instead of user class for performance reasons - need not
+	//	to include user.class.php in any script
+	if (!isset($verifyemail) &&
+			$login->userid > 0 &&
+			sql_value("SELECT `email_problems` FROM `user` WHERE `user_id`='&1'", 0, $login->userid) != 0)
+	{
+		header("Location: verifyemail.php?page=" . basename($_SERVER['REQUEST_URI']));
+		exit;
+	}
+
 // normalize important settings
 function normalize_settings()
 {

htdocs/lib2/logic/user.class.php

@@ -49,6 +49,7 @@ class user
 		$this->reUser->addString('username', '', false);
 		$this->reUser->addString('password', null, true);
 		$this->reUser->addString('email', null, true);
+		$this->reUser->addString('email_problems', 0, false);
 		$this->reUser->addFloat('latitude', 0, false);
 		$this->reUser->addFloat('longitude', 0, false);
 		$this->reUser->addDate('last_modified', time(), true, RE_INSERT_IGNORE);
@@ -1113,6 +1114,31 @@ class user
 		return true;
 	}
 
+	// email bounce processing
+	function addEmailProblem($licensemail=false)
+	{
+		if ($licensemail)
+			return $this->reUser->setValue('email_problems', 1000001) && $this->save();
+		else
+			return $this->reUser->setValue('email_problems', $this->getEmailProblems() + 1) && $this->save();
+	}
+
+	function getEmailProblems()
+	{
+		// see also common.inc.php "SELECT `email_problems`"
+		return $this->reUser->getValue('email_problems') % 1000000;
+	}
+
+	function missedDataLicenseMail()
+	{
+		return $this->reUser->getValue('email_problems') > 1000000;
+	}
+
+	function confirmEmailAddress()
+	{
+		return $this->reUser->setValue('email_problems', 0) && $this->save();
+	}
+
 	function reload()
 	{
 		$this->reUser->reload();