* Improved installer to forbid using database table prefixes with

special characters
s9y · May 28, 2014 · 4471b1a · 4471b1a
1 parent 93d117b
commit 4471b1a
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Showing 67 changed files with 70 additions and 1 deletion.
diff --git a/docs/NEWS b/docs/NEWS
@@ -4,6 +4,9 @@
 Version 2.0-beta3 ()
 ------------------------------------------------------------------------
 
+    * Improved installer to forbid using database table prefixes with
+      special characters
+
     * Themes using Engines are now able to use the parent's
       configuration
 

diff --git a/include/functions_installer.inc.php b/include/functions_installer.inc.php
@@ -620,6 +620,8 @@ function serendipity_checkInstallation() {
 
     if (empty($_POST['dbPrefix']) && empty($serendipity['dbPrefix'])) {
         $errs[] = sprintf(EMPTY_SETTING, INSTALL_DBPREFIX);
+    } elseif (!preg_match('@^[a-z0-9_]+$@i', $_POST['dbPrefix'])) {
+        $errs[] = INSTALL_DBPREFIX_INVALID;
     }
 
     $serendipity['dbType'] = $_POST['dbType'];

diff --git a/lang/UTF-8/plugin_lang.php b/lang/UTF-8/plugin_lang.php
@@ -93,3 +93,4 @@ function help() {
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_bg.inc.php b/lang/UTF-8/serendipity_lang_bg.inc.php
@@ -1035,3 +1035,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_cn.inc.php b/lang/UTF-8/serendipity_lang_cn.inc.php
@@ -1045,3 +1045,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_cs.inc.php b/lang/UTF-8/serendipity_lang_cs.inc.php
@@ -1073,3 +1073,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_cz.inc.php b/lang/UTF-8/serendipity_lang_cz.inc.php
@@ -1073,3 +1073,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_da.inc.php b/lang/UTF-8/serendipity_lang_da.inc.php
@@ -1042,3 +1042,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_de.inc.php b/lang/UTF-8/serendipity_lang_de.inc.php
@@ -1047,3 +1047,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_en.inc.php b/lang/UTF-8/serendipity_lang_en.inc.php
@@ -1045,3 +1045,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_es.inc.php b/lang/UTF-8/serendipity_lang_es.inc.php
@@ -1061,3 +1061,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_fa.inc.php b/lang/UTF-8/serendipity_lang_fa.inc.php
@@ -1045,3 +1045,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_fi.inc.php b/lang/UTF-8/serendipity_lang_fi.inc.php
@@ -1043,3 +1043,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_fr.inc.php b/lang/UTF-8/serendipity_lang_fr.inc.php
@@ -1050,3 +1050,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_hu.inc.php b/lang/UTF-8/serendipity_lang_hu.inc.php
@@ -1041,3 +1041,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_is.inc.php b/lang/UTF-8/serendipity_lang_is.inc.php
@@ -1043,3 +1043,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_it.inc.php b/lang/UTF-8/serendipity_lang_it.inc.php
@@ -1046,3 +1046,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_ja.inc.php b/lang/UTF-8/serendipity_lang_ja.inc.php
@@ -1047,3 +1047,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_ko.inc.php b/lang/UTF-8/serendipity_lang_ko.inc.php
@@ -1045,3 +1045,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_nl.inc.php b/lang/UTF-8/serendipity_lang_nl.inc.php
@@ -1045,3 +1045,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_no.inc.php b/lang/UTF-8/serendipity_lang_no.inc.php
@@ -1045,3 +1045,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_pl.inc.php b/lang/UTF-8/serendipity_lang_pl.inc.php
@@ -1041,3 +1041,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_pt.inc.php b/lang/UTF-8/serendipity_lang_pt.inc.php
@@ -1047,3 +1047,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_pt_PT.inc.php b/lang/UTF-8/serendipity_lang_pt_PT.inc.php
@@ -1054,3 +1054,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_ro.inc.php b/lang/UTF-8/serendipity_lang_ro.inc.php
@@ -1044,3 +1044,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_ru.inc.php b/lang/UTF-8/serendipity_lang_ru.inc.php
@@ -1046,3 +1046,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_sa.inc.php b/lang/UTF-8/serendipity_lang_sa.inc.php
@@ -962,3 +962,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_se.inc.php b/lang/UTF-8/serendipity_lang_se.inc.php
@@ -1043,3 +1043,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_sk.inc.php b/lang/UTF-8/serendipity_lang_sk.inc.php
@@ -1033,3 +1033,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_ta.inc.php b/lang/UTF-8/serendipity_lang_ta.inc.php
@@ -1042,3 +1042,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_tn.inc.php b/lang/UTF-8/serendipity_lang_tn.inc.php
@@ -1047,3 +1047,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_tr.inc.php b/lang/UTF-8/serendipity_lang_tr.inc.php
@@ -1047,3 +1047,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_tw.inc.php b/lang/UTF-8/serendipity_lang_tw.inc.php
@@ -1048,3 +1048,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/UTF-8/serendipity_lang_zh.inc.php b/lang/UTF-8/serendipity_lang_zh.inc.php
@@ -1043,3 +1043,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/addlang.txt b/lang/addlang.txt
@@ -1 +1 @@
-@define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/plugin_lang.php b/lang/plugin_lang.php
@@ -93,3 +93,4 @@ function help() {
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/serendipity_lang_bg.inc.php b/lang/serendipity_lang_bg.inc.php
@@ -1035,3 +1035,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/serendipity_lang_cn.inc.php b/lang/serendipity_lang_cn.inc.php
@@ -1045,3 +1045,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/serendipity_lang_cs.inc.php b/lang/serendipity_lang_cs.inc.php
@@ -1073,3 +1073,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/serendipity_lang_cz.inc.php b/lang/serendipity_lang_cz.inc.php
@@ -1073,3 +1073,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/serendipity_lang_da.inc.php b/lang/serendipity_lang_da.inc.php
@@ -1042,3 +1042,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/serendipity_lang_de.inc.php b/lang/serendipity_lang_de.inc.php
@@ -1047,3 +1047,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/serendipity_lang_en.inc.php b/lang/serendipity_lang_en.inc.php
@@ -1045,3 +1045,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/serendipity_lang_es.inc.php b/lang/serendipity_lang_es.inc.php
@@ -1061,3 +1061,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/serendipity_lang_fa.inc.php b/lang/serendipity_lang_fa.inc.php
@@ -1045,3 +1045,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/serendipity_lang_fi.inc.php b/lang/serendipity_lang_fi.inc.php
@@ -1043,3 +1043,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/serendipity_lang_fr.inc.php b/lang/serendipity_lang_fr.inc.php
@@ -1050,3 +1050,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/serendipity_lang_hu.inc.php b/lang/serendipity_lang_hu.inc.php
@@ -1041,3 +1041,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/serendipity_lang_is.inc.php b/lang/serendipity_lang_is.inc.php
@@ -1043,3 +1043,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/serendipity_lang_it.inc.php b/lang/serendipity_lang_it.inc.php
@@ -1046,3 +1046,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/serendipity_lang_ja.inc.php b/lang/serendipity_lang_ja.inc.php
@@ -1047,3 +1047,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/serendipity_lang_ko.inc.php b/lang/serendipity_lang_ko.inc.php
@@ -1045,3 +1045,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');
diff --git a/lang/serendipity_lang_nl.inc.php b/lang/serendipity_lang_nl.inc.php
@@ -1045,3 +1045,4 @@
 @define('DEBUG', 'Debug');
 @define('CUSTOM_CONFIG', 'Custom configuration file');
 @define('PLUGIN_ALREADY_INSTALLED', 'Plugin already installed, and does not support multiple installation ("stackable").');
+@define('INSTALL_DBPREFIX_INVALID', 'The database table name prefix must not be empty and may only contain letters, numbers and the underscore character.');