From df070a36a81a6ef897a83922f0915e70c2154b2f Mon Sep 17 00:00:00 2001
From: Silvio <silvio@devlet.com.br>
Date: Wed, 20 Apr 2011 13:13:22 -0300
Subject: Adding admin config page and preset validation

---
 imagecache_auto.admin.inc | 36 ++++++++++++++++++++++++++++++++++++
 imagecache_auto.module    | 28 ++++++++++++++++++----------
 2 files changed, 54 insertions(+), 10 deletions(-)
 create mode 100644 imagecache_auto.admin.inc

diff --git a/imagecache_auto.admin.inc b/imagecache_auto.admin.inc
new file mode 100644
index 0000000..4d31bc5
--- /dev/null
+++ b/imagecache_auto.admin.inc
@@ -0,0 +1,36 @@
+<?php
+// $Id$
+
+/**
+ * @file
+ *
+ * Administration page callbacks.
+ */
+
+/**
+ * Form builder. Configure ImageCache Auto.
+ *
+ * @ingroup forms
+ * @see system_settings_form()
+ */
+function imagecache_auto_admin_settings() {
+  $form['imagecache_auto_max_width'] = array(
+    '#type'          => 'textfield',
+    '#title'         => t('Maximum preset width (pixels)'),
+    '#default_value' => variable_get('imagecache_auto_max_width', '10000'),
+    '#size'          => 10,
+    '#maxlength'     => 64,    
+    '#description'   => t('The maximum width an automatically created ImageCache preset can have.'),
+  );
+
+  $form['imagecache_auto_max_height'] = array(
+    '#type'          => 'textfield',
+    '#title'         => t('Maximum preset height (pixels)'),
+    '#default_value' => variable_get('imagecache_auto_max_height', '10000'),
+    '#size'          => 10,
+    '#maxlength'     => 64,    
+    '#description'   => t('The maximum height an automatically created ImageCache preset can have.'),
+  );
+
+  return system_settings_form($form);
+}
diff --git a/imagecache_auto.module b/imagecache_auto.module
index f55fcd5..e022fa5 100644
--- a/imagecache_auto.module
+++ b/imagecache_auto.module
@@ -14,9 +14,9 @@
 function imagecache_auto_menu() {
   $items = array();
 
-  $items['admin/settings/imagecache/auto'] = array(
-    'title'            => 'ImageCache Auto Configuration',
-    'description'      => 'Adjust ImageCache Auto settings.',
+  $items['admin/build/imagecache/auto'] = array(
+    'title'            => 'ImageCache Auto',
+    'description'      => 'ImageCache Auto settings.',
     'page callback'    => 'drupal_get_form',
     'page arguments'   => array('imagecache_auto_admin_settings'),
     'access arguments' => array('administer site configuration'),
@@ -27,7 +27,7 @@ function imagecache_auto_menu() {
   $items[file_directory_path() .'/imagecache_auto'] = array(
     'page callback'   => 'imagecache_auto',
     'access callback' => TRUE,
-    'type' => MENU_CALLBACK
+    'type'            => MENU_CALLBACK,
   );
 
   return $items;
@@ -35,24 +35,32 @@ function imagecache_auto_menu() {
 
 /**
  * Automatically create ImageCache presets.
- *
- * @todo
- *   Specify maximum and minimum dimensions.
  */
 function imagecache_auto() {
   include_once('imagecache_auto.inc');
 
-  $args    = func_get_args();
-  $options = array(
+  $max_width  = variable_get('imagecache_auto_max_width',  '10000');
+  $max_height = variable_get('imagecache_auto_max_height', '10000');
+  $args       = func_get_args();
+  $options    = array(
     'width'  => (int) check_plain(array_shift($args)),
     'height' => (int) check_plain(array_shift($args)),
     'path'   => implode('/', $args),
   );
 
+  // Validation.
+  if ($options['width'] == NULL || $options['width'] < 0 || $options['width'] > $max_width) {
+    drupal_not_found();
+  }
+  else if ($options['height'] == NULL || $options['height'] < 0 || $options['height'] > $max_height) {
+    drupal_not_found();
+  }
+
   // Make sure that the preset exists.
   imagecache_auto_create_preset($options);
 
   // Redirect to the image cache image version.
-  $path = file_directory_path() .'/imagecache/'. $options['width'] .'x'. $options['height'] .'/'. $options['path'];
+  $preset = $options['width'] .'x'. $options['height'];
+  $path   = file_directory_path() .'/imagecache/'. $preset .'/'. $options['path'];
   drupal_goto($path);
 }
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