introduce OC_Util::rememberLoginAllowed()

core/templates/login.php

@@ -32,7 +32,7 @@
 			<?php p($l->t('Lost your password?')); ?>
 		</a>
 		<?php endif; ?>
-		<?php if ($_['encryption_enabled'] === false) : ?>
+		<?php if ($_['rememberLoginAllowed'] === true) : ?>
 		<input type="checkbox" name="remember_login" value="1" id="remember_login" checked />
 		<label for="remember_login"><?php p($l->t('remember')); ?></label>
 		<?php endif; ?>

lib/base.php

@@ -760,7 +760,7 @@ class OC {
 			|| !isset($_COOKIE["oc_token"])
 			|| !isset($_COOKIE["oc_username"])
 			|| !$_COOKIE["oc_remember_login"]
-			|| OC_App::isEnabled('files_encryption')
+			|| !OC_Util::rememberLoginAllowed()
 		) {
 			return false;
 		}

lib/util.php

@@ -467,7 +467,7 @@ class OC_Util {
 		}
 
 		$parameters['alt_login'] = OC_App::getAlternativeLogIns();
-		$parameters['encryption_enabled'] = OC_App::isEnabled('files_encryption');
+		$parameters['rememberLoginAllowed'] = self::rememberLoginAllowed();
 		OC_Template::printGuestPage("", "login", $parameters);
 	}
 
@@ -509,6 +509,17 @@ class OC_Util {
 		}
 	}
 
+	/**
+	 * Check if it is allowed to remember login.
+	 * E.g. if encryption is enabled the user needs to log-in every time he visites
+	 * ownCloud in order to decrypt the private key.
+	 *
+	 * @return bool
+	 */
+	public static function rememberLoginAllowed() {
+		return !OC_App::isEnabled('files_encryption');
+	}
+
 	/**
 	 * @brief Check if the user is a subadmin, redirects to home if not
 	 * @return array $groups where the current user is subadmin