Fix database initialization and check write access on the DB; update INSTALL instructions

INSTALL

@@ -35,10 +35,9 @@ INSTALLATION
    - /temp
    - /logs
 3. Create a new database and a database user for RoundCube (see DATABASE SETUP)
-4. Create database tables using the queries in file 'SQL/*.initial.sql'
-   (* stands for your database type)
-5. Rename the files config/*.inc.php.dist to config/*.inc.php
-6. Modify the files in config/* to suit your local environment
+4. Point your browser to http:///url-to-roundcube/installer/
+5. Follow the instructions of the install script (or see MANUAL CONFINGURATION)
+6. After creating and testing the configuration, remove the installer directory
 7. Done!
 
 
@@ -109,12 +108,13 @@ versions don't have a -O option for the createdb, so if you are
 using that version you'll have to change ownership of the DB later.
 
 
-CONFIGURATION
-=============
+MANUAL CONFIGURATION
+====================
 
 First of all, rename the files config/*.inc.php.dist to config/*.inc.php.
 You can then change these files according to your environment and your needs.
 Details about the config parameters can be found in the config files.
+See http://trac.roundcube.net/wiki/Howto_Install for even more guidance.
 
 You can also modify the default .htaccess file. This is necessary to
 increase the allowed size of file attachments, for example:

installer/config.php

@@ -5,7 +5,7 @@
 ini_set('display_errors', 1);
 require_once 'include/rcube_html.inc';
 
-$RCI->get_defaults();
+$RCI->load_defaults();
 
 if (!empty($_POST['submit'])) {
   

installer/rcube_install.php

@@ -52,7 +52,7 @@ class rcube_install
   /**
    * Read the default config files and store properties
    */
-  function get_defaults()
+  function load_defaults()
   {
     $this->_load_config('.php.dist');
   }
@@ -74,7 +74,7 @@ class rcube_install
   {
     include '../config/main.inc' . $suffix;
     if (is_array($rcmail_config)) {
-      $this->config = $rcmail_config;
+      $this->config += $rcmail_config;
     }
       
     @include '../config/db.inc'. $suffix;
@@ -238,6 +238,56 @@ class rcube_install
     return $out;
   }
   
+  
+  /**
+   * Initialize the database with the according schema
+   *
+   * @param object rcube_db Database connection
+   * @return boolen True on success, False on error
+   */
+  function init_db($DB)
+  {
+    $db_map = array('pgsql' => 'postgres', 'mysqli' => 'mysql');
+    $engine = isset($db_map[$DB->db_provider]) ? $db_map[$DB->db_provider] : $DB->db_provider;
+    
+    // find out db version
+    if ($engine == 'mysql') {
+      $DB->query('SELECT VERSION() AS version');
+      $sql_arr = $DB->fetch_assoc();
+      $version = floatval($sql_arr['version']);
+      
+      if ($version >= 4.1)
+        $engine = 'mysql5';
+    }
+    
+    // read schema file from /SQL/*
+    $fname = "../SQL/$engine.initial.sql";
+    if ($lines = @file($fname, FILE_SKIP_EMPTY_LINES)) {
+      $buff = '';
+      foreach ($lines as $i => $line) {
+        if (eregi('^--', $line))
+          continue;
+          
+        $buff .= $line . "\n";
+        if (eregi(';$', trim($line))) {
+          $DB->query($buff);
+          $buff = '';
+        }
+      }
+    }
+    else {
+      $this->fail('DB Schema', "Cannot read the schema file: $fname");
+      return false;
+    }
+    
+    if ($err = $this->get_error()) {
+      $this->fail('DB Schema', "Error creating database schema: $err");
+      return false;
+    }
+
+    return true;
+  }
+  
   /**
    * Handler for RoundCube errors
    */

installer/styles.css

@@ -123,7 +123,7 @@ textarea.configfile {
   font-family: monospace;
   font-size: 9pt;
   width: 100%;
-  height: 40em;
+  height: 30em;
 }
 
 dt.propname {

installer/test.php

@@ -49,12 +49,14 @@ if (!empty($RCI->config)) {
         $DB->db_connect('w');
         if (!($db_error_msg = $DB->is_error())) {
             $RCI->pass('DSN (write)');
+            echo '<br />';
             $db_working = true;
         }
         else {
-            $RCI->fail('DSN (write)', "Error: $db_error_msg");
+            $RCI->fail('DSN (write)', $db_error_msg);
+            echo '<p class="hint">Make sure that the configured database extists and that the user as write privileges<br />';
+            echo 'DSN: ' . $RCI->config['db_dsnw'] . '</p>';
         }
-        echo '<br />';
     }
     else {
         $RCI->fail('DSN (write)', 'not set');
@@ -66,34 +68,43 @@ else {
 
 // initialize db with schema found in /SQL/*
 if ($db_working && $_POST['initdb']) {
-    $engine = preg_match('/^([a-z]+):/i', $RCI->config['db_dsnw'], $regs) ? $regs[1] : 'mysql';
-    $fname = '../SQL/' . ($engine == 'pgsql' ? 'postgres' : $engine) . '.initial.sql';
-    if ($sql = @file_get_contents($fname)) {
-        $DB->query($sql);
-    }
-    else {
-        $RCI->fail('DB Schema', "Cannot read the schema file: $fname");
-    }
-    
-    if ($err = $RCI->get_error()) {
-        $RCI->fail('DB Schema', "Error creating database schema: $err");
+    if (!($success = $RCI->init_db($DB))) {
         $db_working = false;
-        echo '<p class="warning">Please try to inizialize the database manually as described in the INSTALL guide.</p>';
-        echo '<br />';
+        echo '<p class="warning">Please try to inizialize the database manually as described in the INSTALL guide.
+          Make sure that the configured database extists and that the user as write privileges</p>';
     }
 }
 
+// test database
 if ($db_working) {
-    $success = $DB->query("SELECT count(*) FROM {$RCI->config['db_table_users']}");
-    if (!$success) {
+    $db_read = $DB->query("SELECT count(*) FROM {$RCI->config['db_table_users']}");
+    if (!$db_read) {
         $RCI->fail('DB Schema', "Database not initialized");
+        $db_working = false;
         echo '<p><input type="submit" name="initdb" value="Initialize database" /></p>';
     }
     else {
         $RCI->pass('DB Schema');
     }
     echo '<br />';
+}
+
+// more database tests
+if ($db_working) {
+    // write test
+    $db_write = $DB->query("INSERT INTO {$RCI->config['db_table_cache']} (session_id, cache_key, data, user_id) VALUES (?, ?, ?, 0)", '1234567890abcdef', 'test', 'test');
+    $insert_id = $DB->insert_id($RCI->config['db_sequence_cache']);
     
+    if ($db_write && $insert_id) {
+      $RCI->pass('DB Write');
+      $DB->query("DELETE FROM {$RCI->config['db_table_cache']} WHERE cache_id=?", $insert_id);
+    }
+    else {
+      $RCI->fail('DB Write', $RCI->get_error());
+    }
+    echo '<br />';    
+    
+    // check timezone settings
     $tz_db = 'SELECT ' . $DB->unixtimestamp($DB->now()) . ' AS tz_db';
     $tz_db = $DB->query($tz_db);
     $tz_db = $DB->fetch_assoc($tz_db);
@@ -104,13 +115,12 @@ if ($db_working) {
     // sometimes db and web servers are on separate hosts, so allow a 30 minutes delta
     if (abs($tz_diff) > 1800) {
         $RCI->fail('DB Time', "Database time differs {$td_ziff}s from PHP time");
-    } else {
+    }
+    else {
         $RCI->pass('DB Time');
     }
-    
 }
 
-
 ?>
 
 <p>[@todo Add tests for IMAP and SMTP settings]</p>