Handle RFC3866 Language Tags

app/Classes/LDAP/Attribute.php

@@ -33,12 +33,16 @@ class Attribute
 	// Is this attribute the RDN?
 	protected bool $is_rdn = FALSE;
 
+	// Objectclasses that require this attribute
 	protected Collection $required_by;
 
 	// MIN/MAX number of values
 	protected int $min_values_count = 0;
 	protected int $max_values_count = 0;
 
+	// RFC3866 Language Tags
+	protected Collection $lang_tags;
+
 	/*
 	# Has the attribute been modified
 	protected $modified = false;
@@ -94,6 +98,7 @@ class Attribute
 	{
 		$this->name = $name;
 		$this->values = collect($values);
+		$this->lang_tags = collect();
 
 		// No need to load our schema for internal attributes
 		if (! $this->is_internal)
@@ -183,6 +188,10 @@ class Attribute
 		if ($this->required_by->count())
 			$result->put(__('required'),sprintf('%s: %s',__('Required Attribute by ObjectClass(es)'),$this->required_by->join(',')));
 
+		// This attribute has language tags
+		if ($this->lang_tags->count())
+			$result->put(__('language tags'),sprintf('%s: %d',__('This Attribute has Language Tags'),$this->lang_tags->count()));
+
 		return $result->toArray();
 	}
 
@@ -199,6 +208,18 @@ class Attribute
 			: collect());
 	}
 
+	/**
+	 * If this attribute has RFC3866 Language Tags, this will enable those values to be captured
+	 *
+	 * @param string $tag
+	 * @param array $value
+	 * @return void
+	 */
+	public function setLangTag(string $tag,array $value): void
+	{
+		$this->lang_tags->put($tag,$value);
+	}
+
 	public function setRDN(): void
 	{
 		$this->is_rdn = TRUE;

app/Classes/LDAP/Server.php

@@ -266,6 +266,18 @@ class Server
 		return in_array($attr_name,config('pla.force_may',[]));
 	}
 
+	/**
+	 * Does this server support RFC3666 language tags
+	 * OID: 1.3.6.1.4.1.4203.1.5.4
+	 *
+	 * @return bool
+	 * @throws ObjectNotFoundException
+	 */
+	public function isLanguageTags(): bool
+	{
+		return in_array('1.3.6.1.4.1.4203.1.5.4',$this->rootDSE()->supportedfeatures);
+	}
+
 	/**
 	 * Return the server's schema
 	 *
@@ -513,6 +525,13 @@ class Server
 		return is_null($key) ? $result : $result->get($key);
 	}
 
+	/**
+	 * Given an OID, return the ldapsyntax for the OID
+	 *
+	 * @param string $oid
+	 * @return LDAPSyntax|null
+	 * @throws InvalidUsage
+	 */
 	public function schemaSyntaxName(string $oid): ?LDAPSyntax
 	{
 		return $this->schema('ldapsyntaxes',$oid);

app/Ldap/Entry.php

@@ -21,16 +21,29 @@ class Entry extends Model
 			$result = collect();
 
 			foreach (parent::getAttributes() as $attribute => $value) {
-				$o = Factory::create($attribute,$value);
+				// If the attribute name has language tags
+				$matches = [];
+				if (preg_match('/^([a-zA-Z]+)(;([a-zA-Z-;]+))+/',$attribute,$matches)) {
+					$attribute = $matches[1];
 
-				// Set the rdn flag
+					// If the attribute doesnt exist we'll create it
-				if (preg_match('/^'.$attribute.'=/i',$this->dn))
+					$o = Arr::get($result,$attribute,Factory::create($attribute,[]));
-					$o->setRDN();
+					$o->setLangTag($matches[3],$value);
 
-				// Set required flag
+				} else {
-				$o->required_by(collect($this->getAttribute('objectclass')));
+					$o = Factory::create($attribute,$value);
+				}
 
-				$result->put($attribute,$o);
+				if (! $result->has($attribute)) {
+					// Set the rdn flag
+					if (preg_match('/^'.$attribute.'=/i',$this->dn))
+						$o->setRDN();
+
+					// Set required flag
+					$o->required_by(collect($this->getAttribute('objectclass')));
+
+					$result->put($attribute,$o);
+				}
 			}
 
 			$sort = collect(config('ldap.attr_display_order',[]))->transform(function($item) { return strtolower($item); });

tests/server/openldap/data/10-example.com.ldif

@@ -18,12 +18,20 @@ objectclass: dNSDomain
 dn: c=AU,dc=example,dc=com
 c: AU
 description: Australia
+description: Ozzieland
+description;lang-fr: Australie
+description;lang-en: Australia
+description;lang-en: New Holland
+description;lang-en;lang-aussie: Stralia
+description;lang-cn: 澳大利亚
+description;lang-jp: オーストラリア
 objectclass: country
 objectclass: top
 
 # Entry 3: c=CN,dc=example,dc=com
 dn: c=CN,dc=example,dc=com
 c: CN
+description;lang-cn:中国
 objectclass: country
 objectclass: top
 
@@ -51,6 +59,7 @@ objectclass: top
 dn: c=FR,dc=example,dc=com
 c: FR
 description: France
+description;lang-fr: Le français est parlé ici
 objectclass: country
 objectclass: top