Issue #1015916 by BTMash, jenlampton, theborg, Aron Novak, christefan…

…o, realityloop, xjm, Kevin Hankens: Fixed Image field 'title' allows more data than database column size.

modules/image/image.field.inc

@@ -403,7 +403,8 @@ function image_field_widget_process($element, &$form_state, $form) {
     '#type' => 'textfield',
     '#default_value' => isset($item['alt']) ? $item['alt'] : '',
     '#description' => t('This text will be used by screen readers, search engines, or when the image cannot be loaded.'),
-    '#maxlength' => variable_get('image_alt_length', 80), // See http://www.gawds.org/show.php?contentid=28.
+    // @see http://www.gawds.org/show.php?contentid=28
+    '#maxlength' => 128,
     '#weight' => -2,
     '#access' => (bool) $item['fid'] && $settings['alt_field'],
   );
@@ -412,7 +413,7 @@ function image_field_widget_process($element, &$form_state, $form) {
     '#title' => t('Title'),
     '#default_value' => isset($item['title']) ? $item['title'] : '',
     '#description' => t('The title is used as a tool tip when the user hovers the mouse over the image.'),
-    '#maxlength' => variable_get('image_title_length', 500),
+    '#maxlength' => 128,
     '#weight' => -1,
     '#access' => (bool) $item['fid'] && $settings['title_field'],
   );

modules/image/image.install

@@ -385,6 +385,15 @@ function image_update_7002(array &$sandbox) {
   $sandbox['#finished'] = count($sandbox['tables']) ? ($sandbox['processed'] / $sandbox['total']) : 1;
 }
 
+/**
+ * Remove the variables that set alt and title length since they were not
+ * used for database column size and could cause PDO exceptions.
+ */
+function image_update_7003() {
+  variable_del('image_alt_length');
+  variable_del('image_title_length');
+}
+
 /**
  * Implements hook_requirements() to check the PHP GD Library.
  *

modules/image/image.test

@@ -786,6 +786,23 @@ class ImageFieldDisplayTestCase extends ImageFieldTestCase {
     $this->drupalPost('node/' . $nid . '/edit', $edit, t('Save'));
     $default_output = theme('image', $image_info);
     $this->assertRaw($default_output, t('Image displayed using user supplied alt and title attributes.'));
+
+    // Verify that alt/title longer than allowed results in a validation error.
+    $test_size = 2000;
+    $max_size = 128;
+    $edit = array(
+      $field_name . '[' . LANGUAGE_NONE . '][0][alt]' => $this->randomName($test_size),
+      $field_name . '[' . LANGUAGE_NONE . '][0][title]' => $this->randomName($test_size),
+    );
+    $this->drupalPost('node/' . $nid . '/edit', $edit, t('Save'));
+    $this->assertRaw(t('Alternate text cannot be longer than %max characters but is currently %length characters long.', array(
+      '%max' => $max_size,
+      '%length' => $test_size,
+    )));
+    $this->assertRaw(t('Title cannot be longer than %max characters but is currently %length characters long.', array(
+      '%max' => $max_size,
+      '%length' => $test_size,
+    )));
   }
 
   /**