Stage 1 of the installer. basically check that we can start as far as Kohana correctly

1 files changed, 180 insertions, 0 deletions

diff --git a/installer/helpers/system_check.php b/installer/helpers/system_check.php
new file mode 100644
index 00000000..b0bd7e12
--- /dev/null
+++ b/installer/helpers/system_check.php
@@ -0,0 +1,180 @@
+<?php defined("SYSPATH") or die("No direct script access.");
+/**
+ * Gallery - a web based photo album viewer and editor
+ * Copyright (C) 2000-2008 Bharat Mediratta
+ *
+ * This program is free software; you can redistribute it 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 more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+class system_check {
+  private static $messages = array();
+ 
+  public function failed() {
+    $failed = false;
+    if (version_compare(PHP_VERSION, "5.2", "<")) {
+      self::$messages["PHP Version"] = array("error" => true,
+       "text" => sprintf("Gallery3 requires PHP 5.2 or newer, current version: %s.", PHP_VERSION));
+      $failed = true;
+    } else {
+      self::$messages["PHP Version"] = array("error" => false,
+        "text" => PHP_VERSION);
+    }
+
+    
+    if (!(is_dir(SYSPATH) AND is_file(SYSPATH.'core/Bootstrap'.EXT))) {     
+      self::$messages["Kohana Directory"] = array("error" => true,
+        "text" => "The configured Kohana directory does not exist or does not contain the required files.");
+    } else {
+      self::$messages["Kohana Directory"] = array("error" => false,
+        "text" => SYSPATH);
+    }
+                                                                       
+    if (!(is_dir(APPPATH) AND is_file(APPPATH.'config/config'.EXT))) {     
+      self::$messages["Application Directory"] = array("error" => true,
+        "text" => "The configured Gallery3 application directory does not exist or does not contain the required files.");
+      $failed = true;
+    } else {
+      self::$messages["Application Directory"] = array("error" => false,
+        "text" => APPPATH);
+    }
+                                                                            
+    if (!(is_dir(MODPATH))) {     
+      self::$messages["Modules Directory"] = array("error" => true,
+        "text" => "The configured Gallery3 modules directory does not exist or does not contain the required files.");
+      $failed = true;
+    } else {
+      self::$messages["Modules Directory"] = array("error" => false,
+        "text" => MODPATH);
+    }
+                                                                            
+    if (!(is_dir(THEMEPATH))) {     
+      self::$messages["Theme Directory"] = array("error" => true,
+        "text" => "The configured Gallery3 themes directory does not exist or does not contain the required files.");
+      $failed = true;
+    } else {
+      self::$messages["Themes Directory"] = array("error" => false,
+        "text" => THEMEPATH);
+    }
+                                                                            
+    if (!@preg_match("/^.$/u", utf8_encode("\xF1"))) {
+      self::$messages["PCRE UTF-8"] = array("error" => true,
+        "text" => "Perl-Compatible Regular Expressions has not been compiled with UTF-8 support.",
+        "html" => "<a href=\"http://php.net/pcre\">PCRE</a> has not been compiled with UTF-8 support.");
+      $failed = true;
+    } else if (!@preg_match("/^\pL$/u", utf8_encode("\xF1"))) {             
+      self::$messages["PCRE UTF-8"] = array("error" => true,
+        "text" => "Perl-Compatible Regular Expressions has not been compiled with Unicode support.",
+        "html" => "<a href=\"http://php.net/pcre\">PCRE</a> has not been compiled with Unicode property support.");
+      $failed = true;
+    } else {
+      self::$messages["PCRE UTF-8"] = array("error" => false,
+        "text" => "Pass");
+    }
+
+    if (!(class_exists("ReflectionClass"))) {
+      self::$messages["Reflection Enabled"] = array("error" => true,
+        "text" => "PHP relection is either not loaded or not compiled in.",
+        "html" => "PHP <a href=\"http://php.net/reflection\">relection<a> is either not loaded or not compiled in.");
+      $failed = true;
+    } else {
+      self::$messages["Reflection Enabled"] = array("error" => false,
+        "text" => "Pass");
+    }
+                                                                            
+    if (!(function_exists("filter_list"))) {
+      self::$messages["Filters Enabled"] = array("error" => true,
+        "text" => "The filter extension is either not loaded or not compiled in.",
+        "html" => "The <a href=\"http://php.net/filter\">filter</a> extension is either not loaded or not compiled in.");
+      $failed = true;
+    } else {
+      self::$messages["Filters Enabled"] = array("error" => false,
+        "text" => "Pass");
+    }
+
+    if (!(extension_loaded("iconv"))) {
+      self::$messages["Iconv Loaded"] = array("error" => true,
+        "text" => "The iconv extension is not loaded.",
+        "html" => "The <a href=\"http://php.net/iconv\">iconv</a> extension is not loaded.");
+      $failed = true;
+    } else {
+      self::$messages["Iconv Enabled"] = array("error" => false,
+        "text" => "Pass");
+    }
+
+    if (extension_loaded("mbstring") &&
+        (ini_get("mbstring.func_overload") & MB_OVERLOAD_STRING)) {
+      self::$messages["Mbstring Overloaded"] = array("error" => true,
+        "text" => "The mbstring extension is overloading PHP's native string functions.",
+        "html" => "The <a href=\"http://php.net/mbstring\">mbstring</a> extension is overloading PHP's native string functions.");
+      $failed = true;
+    } else {
+      self::$messages["MbString Overloaded"] = array("error" => false,
+        "text" => "Pass");
+    }
+
+    if (!(isset($_SERVER["REQUEST_URI"]) || isset($_SERVER["PHP_SELF"]))) {
+      self::$messages["URI Determination"] = array("error" => true,
+        "text" => "Neither \$_SERVER['REQUEST_URI'] or \$_SERVER['PHP_SELF'] is available.",
+        "html" => "Neither <code>\$_SERVER['REQUEST_URI']</code> or <code>\$_SERVER['PHP_SELF']<code> is available.");
+      $failed = true;
+    } else {
+      self::$messages["URI Determination"] = array("error" => false,
+        "text" => "Pass");
+    }
+
+    $short_tags = ini_get("short_open_tag");
+    if (empty($short_tags)) {
+      self::$messages["Short Tags"] = array("error" => true,
+        "text" => "Gallery3 requires that PHP short tags be enabled.",
+        "html" => "Gallery3 requires that PHP <a href=\"http://ca2.php.net/manual/en/ini.core.php\">short tags</a> be enabled");
+      $failed = true;
+    } else {
+      self::$messages["Short Tags"] = array("error" => false,
+        "text" => "Pass");
+    }
+    return $failed;
+  }
+
+  public static function display_requirements() {
+    if (PHP_SAPI == 'cli') {
+      print self::_render("installer/views/installer.txt");
+    } else {
+      print self::_render("installer/views/installer.html");
+    }
+  }
+
+  private static function _render($view) {
+    if ($view == '')
+      return;
+
+    // Buffering on
+    ob_start();
+
+    try
+      {
+        // Views are straight HTML pages with embedded PHP, so importing them
+        // this way insures that $this can be accessed as if the user was in
+        // the controller, which gives the easiest access to libraries in views
+        include realpath($view . EXT);
+      }
+    catch (Exception $e)
+      {
+        // Display the exception using its internal __toString method
+        echo $e;
+      }
+
+    // Fetch the output and close the buffer
+    return ob_get_clean();
+  }
+}
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