diff -r 2b826f2640e9 -r 94214ec0871c plugins/admin/PluginManager.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/admin/PluginManager.php	Sun Apr 06 15:30:39 2008 -0400
@@ -0,0 +1,261 @@
+<?php
+
+/*
+ * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
+ * Version 1.1.3 (Caoineag alpha 3)
+ * Copyright (C) 2006-2007 Dan Fuhry
+ *
+ * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
+ */
+
+/**
+ * SYNOPSIS OF PLUGIN FRAMEWORK
+ *
+ * The new plugin manager is making an alternative approach to managing plugin files by allowing metadata to be embedded in them
+ * or optionally included from external files. This method is API- and format-compatible with old plugins. The change is being
+ * made because we believe this will provide greater flexibility within plugin files.
+ * 
+ * Plugin files can contain one or more specially formatted comment blocks with metadata, language strings, and installation or
+ * upgrade SQL schemas. For this to work, plugins need to define their version numbers in an Enano-readable and standardized
+ * format, and we think the best way to do this is with JSON. It is important that plugins define both the current version and
+ * a list of all past versions, and then have upgrade sections telling which version they go from and which one they go to.
+ * 
+ * The format for the special comment blocks is:
+ <code>
+ /**!blocktype( param1 = "value1" [ param2 = "value2" ... ] )**
+ 
+ ... block content ...
+ 
+ **!* / (remove that last space)
+ </code>
+ * The format inside blocks varies. Metadata and language strings will be in JSON; installation and upgrade schemas will be in
+ * SQL. You can include an external file into a block using the following syntax inside of a block:
+ <code>
+ !include "path/to/file"
+ </code>
+ * The file will always be relative to the Enano root. So if your plugin has a language file in ENANO_ROOT/plugins/fooplugin/,
+ * you would use "plugins/fooplugin/language.json".
+ *
+ * The format for plugin metadata is as follows:
+ <code>
+ /**!info**
+ {
+   "Plugin Name" : "Foo plugin",
+   "Plugin URI" : "http://fooplugin.enanocms.org/",
+   "Description" : "Some short descriptive text",
+   "Author" : "John Doe",
+   "Version" : "0.1",
+   "Author URI" : "http://yourdomain.com/",
+   "Version list" : [ "0.1-alpha1", "0.1-alpha2", "0.1-beta1", "0.1" ]
+ }
+ **!* /
+ </code>
+ * This is the format for language data:
+ <code>
+ /**!language**
+ {
+   eng: {
+     categories: [ 'meta', 'foo', 'bar' ],
+     strings: {
+       meta: {
+         foo: "Foo strings",
+         bar: "Bar strings"
+       },
+       foo: {
+         string_name: "string value",
+         string_name_2: "string value 2"
+       }
+     }
+   }
+ }
+ **!* / (once more, remove the space in there)
+ </code>
+ * Here is the format for installation schemas:
+ <code>
+ /**!install**
+ 
+ CREATE TABLE {{TABLE_PREFIX}}foo_table(
+   ...
+ )
+ 
+ **!* /
+ </code>
+ * And finally, the format for upgrade schemas:
+ <code>
+ /**!upgrade from = "0.1-alpha1" to = "0.1-alpha2" **
+ 
+ **!* /
+ </code>
+ * Remember that upgrades will always be done incrementally, so if the user is upgrading 0.1-alpha2 to 0.1, Enano's plugin
+ * engine will run the 0.1-alpha2 to 0.1-beta1 upgrader, then the 0.1-beta1 to 0.1 upgrader, going by the versions listed in
+ * the example metadata block above.
+ * 
+ * All of this information is effective as of Enano 1.1.4.
+ */
+
+// Plugin manager "2.0"
+
+function page_Admin_PluginManager()
+{
+  global $db, $session, $paths, $template, $plugins; // Common objects
+  global $lang;
+  if ( $session->auth_level < USER_LEVEL_ADMIN || $session->user_level < USER_LEVEL_ADMIN )
+  {
+    $login_link = makeUrlNS('Special', 'Login/' . $paths->nslist['Special'] . 'Administration', 'level=' . USER_LEVEL_ADMIN, true);
+    echo '<h3>' . $lang->get('adm_err_not_auth_title') . '</h3>';
+    echo '<p>' . $lang->get('adm_err_not_auth_body', array( 'login_link' => $login_link )) . '</p>';
+    return;
+  }
+  
+  // Are we processing an AJAX request from the smartform?
+  if ( $paths->getParam(0) == 'action.json' )
+  {
+    // Set to application/json to discourage advertisement scripts
+    header('Content-Type: application/json');
+    
+    // Init return data
+    $return = array('mode' => 'error', 'error' => 'undefined');
+    
+    // Start parsing process
+    try
+    {
+      // Is the request properly sent on POST?
+      if ( isset($_POST['r']) )
+      {
+        // Try to decode the request
+        $request = enano_json_decode($_POST['r']);
+        // Is the action to perform specified?
+        if ( isset($request['mode']) )
+        {
+          switch ( $request['mode'] )
+          {
+            default:
+              // The requested action isn't something this script knows how to do
+              $return = array(
+                'mode' => 'error',
+                'error' => 'Unknown mode "' . $request['mode'] . '" sent in request'
+              );
+              break;
+          }
+        }
+        else
+        {
+          // Didn't specify action
+          $return = array(
+            'mode' => 'error',
+            'error' => 'Missing key "mode" in request'
+          );
+        }
+      }
+      else
+      {
+        // Didn't send a request
+        $return = array(
+          'mode' => 'error',
+          'error' => 'No request specified'
+        );
+      }
+    }
+    catch ( Exception $e )
+    {
+      // Sent a request but it's not valid JSON
+      $return = array(
+          'mode' => 'error',
+          'error' => 'Invalid request - JSON parsing failed'
+        );
+    }
+    
+    echo enano_json_encode($return);
+    
+    return true;
+  }
+  
+  //
+  // Not a JSON request, output normal HTML interface
+  //
+  
+  // Scan all plugins
+  $plugin_list = array();
+  
+  if ( $dirh = @opendir( ENANO_ROOT . '/plugins' ) )
+  {
+    while ( $dh = @readdir($dirh) )
+    {
+      if ( !preg_match('/\.php$/i', $dh) )
+        continue;
+      $fullpath = ENANO_ROOT . "/plugins/$dh";
+      // it's a PHP file, attempt to read metadata
+      // pass 1: try to read a !info block
+      $blockdata = $plugins->parse_plugin_blocks($fullpath, 'info');
+      if ( empty($blockdata) )
+      {
+        // no !info block, check for old header
+        $fh = @fopen($fullpath, 'r');
+        if ( !$fh )
+          // can't read, bail out
+          continue;
+        $plugin_data = array();
+        for ( $i = 0; $i < 8; $i++ )
+        {
+          $plugin_data[] = @fgets($fh, 8096);
+        }
+        // close our file handle
+        fclose($fh);
+        // is the header correct?
+        if ( trim($plugin_data[0]) != '<?php' || trim($plugin_data[1]) != '/*' )
+        {
+          // nope. get out.
+          continue;
+        }
+        // parse all the variables
+        $plugin_meta = array();
+        for ( $i = 2; $i <= 7; $i++ )
+        {
+          if ( !preg_match('/^([A-z0-9 ]+?): (.+?)$/', trim($plugin_data[$i]), $match) )
+            continue 2;
+          $plugin_meta[ strtolower($match[1]) ] = $match[2];
+        }
+      }
+      else
+      {
+        // parse JSON block
+        $plugin_data =& $blockdata[0]['value'];
+        $plugin_data = enano_clean_json(enano_trim_json($plugin_data));
+        try
+        {
+          $plugin_meta_uc = enano_json_decode($plugin_data);
+        }
+        catch ( Exception $e )
+        {
+          continue;
+        }
+        // convert all the keys to lowercase
+        $plugin_meta = array();
+        foreach ( $plugin_meta_uc as $key => $value )
+        {
+          $plugin_meta[ strtolower($key) ] = $value;
+        }
+      }
+      if ( !isset($plugin_meta) || !is_array(@$plugin_meta) )
+      {
+        // parsing didn't work.
+        continue;
+      }
+      // check for required keys
+      $required_keys = array('plugin name', 'plugin uri', 'description', 'author', 'version', 'author uri');
+      foreach ( $required_keys as $key )
+      {
+        if ( !isset($plugin_meta[$key]) )
+          // not set, skip this plugin
+          continue 2;
+      }
+      // all checks passed
+      $plugin_list[$dh] = $plugin_meta;
+    }
+  }
+  echo '<pre>' . print_r($plugin_list, true) . '</pre>';
+}