Added function for ldap-identities plugin to filter by mail prefixes (allow compatibility for e.g. Exchange and others)

plugins/ldap-identities/LdapConfig.php

@@ -8,6 +8,7 @@ class LdapConfig
 	public const CONFIG_SERVER = "server";
 	public const CONFIG_PROTOCOL_VERSION = "server_version";
 	public const CONFIG_STARTTLS = "starttls";
+	public const CONFIG_MAIL_PREFIX = "mail_prefix";
 
 	public const CONFIG_BIND_USER = "bind_user";
 	public const CONFIG_BIND_PASSWORD = "bind_password";
@@ -30,6 +31,7 @@ class LdapConfig
 	public $server;
 	public $protocol;
 	public $starttls;
+	public $mail_prefix;
 	public $bind_user;
 	public $bind_password;
 	public $user_base;
@@ -51,6 +53,7 @@ public static function MakeConfig(Plugin $config): LdapConfig
 		$ldap->server = trim($config->Get("plugin", self::CONFIG_SERVER));
 		$ldap->protocol = (int)trim($config->Get("plugin", self::CONFIG_PROTOCOL_VERSION, 3));
 		$ldap->starttls = (bool)trim($config->Get("plugin", self::CONFIG_STARTTLS));
+		$ldap->mail_prefix = trim($config->Get("plugin", self::CONFIG_MAIL_PREFIX));
 		$ldap->bind_user = trim($config->Get("plugin", self::CONFIG_BIND_USER));
 		$ldap->bind_password = trim($config->Get("plugin", self::CONFIG_BIND_PASSWORD));
 		$ldap->user_base = trim($config->Get("plugin", self::CONFIG_USER_BASE));

plugins/ldap-identities/LdapIdentities.php

@@ -69,7 +69,8 @@ public function GetIdentities(Account $account): array
 				$this->config->user_base,
 				$this->config->user_objectclass,
 				$this->config->user_field_name,
-				$this->config->user_field_mail
+				$this->config->user_field_mail,
+				$this->config->mail_prefix
 			);
 		} catch (LdapException $e) {
 			return []; // exceptions are only thrown from the handleerror function that does logging already
@@ -104,7 +105,8 @@ public function GetIdentities(Account $account): array
 				$this->config->group_base,
 				$this->config->group_objectclass,
 				$this->config->group_field_name,
-				$this->config->group_field_mail
+				$this->config->group_field_mail,
+				$this->config->mail_prefix
 			);
 		} catch (LdapException $e) {
 			return []; // exceptions are only thrown from the handleerror function that does logging already
@@ -241,7 +243,7 @@ private function HandleLdapError(string $op = ""): void
 	 * @return LdapResult[]
 	 * @throws LdapException
 	 */
-	private function FindLdapResults(string $searchField, string $searchValue, string $searchBase, string $objectClass, string $nameField, string $mailField): array
+	private function FindLdapResults(string $searchField, string $searchValue, string $searchBase, string $objectClass, string $nameField, string $mailField, string $mailPrefix): array
 	{
 		$this->EnsureBound();
 
@@ -261,6 +263,8 @@ private function FindLdapResults(string $searchField, string $searchValue, strin
 			return [];
 		}
 
+		$entries = $this->CleanupMailAddresses($entries, $mailField, $mailPrefix);
+
 		$results = [];
 		for ($i = 0; $i < $entries["count"]; $i++) {
 			$entry = $entries[$i];
@@ -276,6 +280,49 @@ private function FindLdapResults(string $searchField, string $searchValue, strin
 		return $results;
 	}
 
+	// Function CleanupMailAddresses(): If a prefix is given this function removes addresses without / with the wrong prefix and then the prefix itself from all remaining values.
+	// This is usefull for example for importing Active Directory LDAP entry "proxyAddresses" which can hold different address types with prefixes like "X400:", "smtp:" "sip:" and others.
+
+	/**
+	@param array $entries
+	@param string $mailField
+	@paraam string $mailPrefix
+	@return array
+	*/
+	private function CleanupMailAddresses(array $entries, string $mailField, string $mailPrefix)
+	{
+		if (!empty($mailPrefix)) {
+			for ($i = 0; $i < $entries["count"]; $i++) {
+				// Remove addresses without the given prefix
+				$entries[$i]["$mailField"] = array_filter($entries[$i]["$mailField"],
+												function($prefixMail)
+												{
+													// $mailPrefix can't be used here, because it's nailed to the CleanupMailAddresses function and can't be passed to the array_filter function afaik.
+													// Ideas to avoid this are welcome.
+													if (stripos($prefixMail, $this->config->mail_prefix) === 0) {
+														return TRUE;
+													}
+													return FALSE;
+												}
+											);
+				// Set "count" to new value
+				$newcount = count($entries[$i]["$mailField"]);
+				if (array_key_exists("count", $entries[$i]["$mailField"])) {
+					$newcount = $newcount - 1;
+				}
+				$entries[$i]["$mailField"]["count"] = $newcount;
+
+				// Remove the prefix
+				for ($j = 0; $j < $entries[$i]["$mailField"]["count"]; $j++) {
+					$mailPrefixLen = mb_strlen($mailPrefix);
+					$entries[$i]["$mailField"][$j] = substr($entries[$i]["$mailField"][$j], $mailPrefixLen);
+				}
+			}
+		}
+
+		return $entries;
+	}
+
 	/**
 	 * @param array $entry
 	 * @param string $attribute

plugins/ldap-identities/index.php

@@ -8,10 +8,10 @@ class LdapIdentitiesPlugin extends AbstractPlugin
 {
 	const
 		NAME     = 'LDAP Identities',
-		VERSION  = '2.2',
+		VERSION  = '2.3',
 		AUTHOR   = 'FWest98',
 		URL      = 'https://github.com/FWest98',
-		RELEASE  = '2024-02-22',
+		RELEASE  = '2024-02-27',
 		REQUIRED = '2.20.0',
 		CATEGORY = 'Accounts',
 		DESCRIPTION = 'Adds functionality to import account identities from LDAP.';
@@ -57,13 +57,19 @@ protected function configMapping(): array
 				->SetLabel("LDAP Protocol Version")
 				->SetType(PluginPropertyType::SELECTION)
 				->SetDefaultValue([2, 3]),
-				
+
 			Property::NewInstance(LdapConfig::CONFIG_STARTTLS)
 				->SetLabel("Use StartTLS")
 				->SetType(PluginPropertyType::BOOL)
 				->SetDescription("Whether or not to use TLS encrypted connection")
 				->SetDefaultValue(true),
 
+			Property::NewInstance(LdapConfig::CONFIG_MAIL_PREFIX)
+				->SetLabel("Email prefix")
+				->SetType(PluginPropertyType::STRING)
+				->SetDescription("Only addresses with this prefix will be used as identity. The prefix is removed from the identity list.\nThis is useful for example to import identities from Exchange, which stores mail addresses in the ProxyAddresses attribut of Active Directory with \"smtp:\" as prefix. (e.g. \"smtp:[email protected]\")\n-> To use addresses set by Exchange use \"smtp:\" as prefix.")
+				->SetDefaultValue(""),
+
 			Property::NewInstance(LdapConfig::CONFIG_BIND_USER)
 				->SetLabel("Bind User DN")
 				->SetDescription("The user to use for binding to the LDAP server. Should be a DN or RDN. Leave empty for anonymous bind")