Add Zen Cart version checking.

admin/easypopulate_4.php

@@ -78,8 +78,17 @@
 //$sql_fail_test == true; // used to cause an sql error on new product upload - tests error handling & logs
 /* Test area end */
 
+$curver = '4.0.33';
+$message = '';
+if (IS_ADMIN_FLAG) {
+  $new_version_details = plugin_version_check_for_updates(2068, $curver);
+  if ($new_version_details !== FALSE) {
+    $message = '<span class="alert">' . ' - NOTE: A NEW VERSION OF THIS PLUGIN IS AVAILABLE. <a href="' . $new_version_details['link'] . '" target="_blank">[Details]</a>' . '</span>';
+  }
+}
+
 // Current EP Version - Modded by mc12345678 after Chadd had done so much
-$curver              = '4.0.33 - Beta 02-29-2016';
+$curver              = $curver . ' - Beta 02-29-2016' . $message;
 $display_output = ''; // results of import displayed after script run
 $ep_dltype = NULL;
 $ep_stack_sql_error = false; // function returns true on any 1 error, and notifies user of an error

admin/includes/functions/extra_functions/easypopulate_4_functions.php

@@ -213,6 +213,74 @@ function zen_get_sub_categories(&$categories, $categories_id) {
 	}
 }
 
+if (!function_exists('plugin_version_check_for_updates')) {
+/**
+ * plugin_support.php
+ *
+ * @package functions
+ * @copyright Copyright 2003-2015 Zen Cart Development Team
+ * @copyright Portions Copyright 2003 osCommerce
+ * @license http://www.zen-cart.com/license/2_0.txt GNU Public License V2.0
+ * @version $Id: Modified in v1.5.5 $
+ */
+/**
+ * Functions to support plugin usage
+ */
+  /**
+   * Check for updated version of a plugin
+   * Arguments:
+   *   $plugin_file_id = the fileid number for the plugin as hosted on the zen-cart.com plugins library
+   *   $version_string_to_compare = the version that I have now on my own server (will be checked against the one on the ZC server)
+   * If the "version string" passed to this function evaluates (see strcmp) to a value less-then-or-equal-to the one on the ZC server, FALSE will be returned.
+   * If the "version string" on the ZC server is greater than the version string passed to this function, this function will return an array with up-to-date information. The [link] value is the plugin page at zen-cart.com
+   * If no plugin_file_id is passed, or if no result is found, then FALSE will be returned.
+   *
+   * USAGE:
+   *   if (IS_ADMIN_FLAG) {
+   *     $new_version_details = plugin_version_check_for_updates(999999999, 'some_string');
+   *     if ($new_version_details !== FALSE) {
+   *       $message = '<span class="alert">' . ' - NOTE: A NEW VERSION OF THIS PLUGIN IS AVAILABLE. <a href="' . $new_version_details['link'] . '" target="_blank">[Details]</a>' . '</span>';
+   *     }
+   *   }
+   */
+  function plugin_version_check_for_updates($plugin_file_id = 0, $version_string_to_compare = '')
+  {
+    if ($plugin_file_id == 0) return FALSE;
+    $new_version_available = FALSE;
+    $lookup_index = 0;
+    $url = 'https://www.zen-cart.com/downloads.php?do=versioncheck' . '&id='.(int)$plugin_file_id;
+    $ch = curl_init();
+    curl_setopt($ch, CURLOPT_URL,$url);
+    curl_setopt($ch, CURLOPT_VERBOSE, 0);
+    curl_setopt($ch, CURLOPT_HEADER, false);
+    curl_setopt($ch, CURLOPT_USERAGENT, 'Plugin Version Check [' . (int)$plugin_file_id . '] ' . HTTP_SERVER);
+    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+    $response = curl_exec($ch);
+    $error = curl_error($ch);
+    if ($error > 0) {
+      curl_setopt($ch, CURLOPT_URL, str_replace('tps:', 'tp:', $url));
+      $response = curl_exec($ch);
+      $error = curl_error($ch);
+    }
+    curl_close($ch);
+    if ($error > 0 || $response == '') {
+      $response = file_get_contents($url);
+    }
+    if ($response === false) {
+      $response = file_get_contents(str_replace('tps:', 'tp:', $url));
+    }
+    if ($response === false) return false;
+    $data = json_decode($response, true);
+    if (!$data || !is_array($data)) return false;
+    // compare versions
+    if (strcmp($data[$lookup_index]['latest_plugin_version'], $version_string_to_compare) > 0) $new_version_available = TRUE;
+    // check whether present ZC version is compatible with the latest available plugin version
+    if (!in_array('v'. PROJECT_VERSION_MAJOR . '.' . PROJECT_VERSION_MINOR, $data[$lookup_index]['zcversions'])) $new_version_available = FALSE;
+    return ($new_version_available) ? $data[$lookup_index] : FALSE;
+  }
+
+}
+
 function ep_4_get_uploaded_file($filename) {
 	if (isset($_FILES[$filename])) {
 		//global $_FILES;

changelog.txt

@@ -277,4 +277,5 @@
 				Added a .htaccess file that only includes permission for .csv and .txt files based off
 					of the admin/.htaccess file available from ZC 1.5.4.
 				Updated instructions to add some additional considerations.
-
+				EP4 had been submitted for download, download from ZC is available from:
+					https://www.zen-cart.com/downloads.php?do=file&id=2068