New HTTP error message classes for uiredesign

actions/clienterror.php

@@ -0,0 +1,94 @@
+<?php
+
+/**
+ * Client error action.
+ *
+ * PHP version 5
+ *
+ * @category Action
+ * @package  Laconica
+ * @author   Evan Prodromou <evan@controlyourself.ca>
+ * @author   Zach Copley <zach@controlyourself.ca>
+ * @license  http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
+ * @link     http://laconi.ca/
+ *
+ * Laconica - a distributed open-source microblogging tool
+ * Copyright (C) 2008, Controlez-Vous, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+if (!defined('LACONICA')) {
+    exit(1);
+}
+
+require_once INSTALLDIR.'/lib/error.php';
+
+/**
+ * Class for displaying HTTP client errors
+ *
+ * @category Action
+ * @package  Laconica
+ * @author   Zach Copley <zach@controlyourself.ca>
+ * @license  http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
+ * @link     http://laconi.ca/
+ */
+class ClientErrorAction extends ErrorAction
+{
+    function __construct($message='Error', $code=400)
+    {
+        parent::__construct($message, $code);
+        
+        $this->status  = array(400 => 'Bad Request',
+                               401 => 'Unauthorized',
+                               402 => 'Payment Required',
+                               403 => 'Forbidden',
+                               404 => 'Not Found',
+                               405 => 'Method Not Allowed',
+                               406 => 'Not Acceptable',
+                               407 => 'Proxy Authentication Required',
+                               408 => 'Request Timeout',
+                               409 => 'Conflict',
+                               410 => 'Gone',
+                               411 => 'Length Required',
+                               412 => 'Precondition Failed',
+                               413 => 'Request Entity Too Large',
+                               414 => 'Request-URI Too Long',
+                               415 => 'Unsupported Media Type',
+                               416 => 'Requested Range Not Satisfiable',
+                               417 => 'Expectation Failed');
+        $this->default = 400;
+    }
+    
+    // XXX: Should these error actions even be invokable via URI?
+    
+    function handle($args)
+    {
+        parent::handle($args);
+
+        $this->code = $this->trimmed('code');
+
+        if (!$this->code || $code < 400 || $code > 499) {
+            $this->code = $this->default;
+        }
+
+        $this->message = $this->trimmed('message');
+        
+        if (!$this->message) {
+            $this->message = "Client Error $this->code"; 
+        }        
+
+        $this->showPage();
+    }
+}

actions/servererror.php

@@ -0,0 +1,92 @@
+<?php
+
+/**
+ * Server error action.
+ *
+ * PHP version 5
+ *
+ * @category Action
+ * @package  Laconica
+ * @author   Evan Prodromou <evan@controlyourself.ca>
+ * @author   Zach Copley <zach@controlyourself.ca>
+ * @license  http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
+ * @link     http://laconi.ca/
+ *
+ * Laconica - a distributed open-source microblogging tool
+ * Copyright (C) 2008, Controlez-Vous, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+if (!defined('LACONICA')) {
+    exit(1);
+}
+
+require_once INSTALLDIR.'/lib/error.php';
+
+/**
+ * Class for displaying HTTP server errors
+ *
+ * Note: The older util.php class simply printed a string, but the spec
+ * says that 500 errors should be treated similarly to 400 errors, and
+ * it's easier to give an HTML response.  Maybe we can customize these
+ * to display some funny animal cartoons.  If not, we can probably role
+ * these classes up into a single class. 
+ *
+ * See: http://tools.ietf.org/html/rfc2616#section-10
+ *
+ * @category Action
+ * @package  Laconica
+ * @author   Zach Copley <zach@controlyourself.ca>
+ * @license  http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
+ * @link     http://laconi.ca/
+ */
+class ServerErrorAction extends ErrorAction
+{
+    function __construct($message='Error', $code=500)
+    {
+        parent::__construct($message, $code);
+        
+        $this->status  = array(500 => 'Internal Server Error',
+                               501 => 'Not Implemented',
+                               502 => 'Bad Gateway',
+                               503 => 'Service Unavailable',
+                               504 => 'Gateway Timeout',
+                               505 => 'HTTP Version Not Supported');
+        
+        $this->default = 500;
+    }
+    
+    // XXX: Should these error actions even be invokable via URI?
+    
+    function handle($args)
+    {
+        parent::handle($args);
+
+        $this->code = $this->trimmed('code');
+
+        if (!$this->code || $code < 500 || $code > 599) {
+            $this->code = $this->default;
+        }
+
+        $this->message = $this->trimmed('message');
+        
+        if (!$this->message) {
+            $this->message = "Server Error $this->code"; 
+        }        
+
+        $this->showPage();
+    }
+     
+}

lib/htmloutputter.php

@@ -108,6 +108,8 @@ class HTMLOutputter extends XMLOutputter
         }
 
         header('Content-Type: '.$type);
+        
+        $this->extraHeaders();
 
         $this->startXML('html',
                         '-//W3C//DTD XHTML 1.0 Strict//EN',
@@ -132,6 +134,16 @@ class HTMLOutputter extends XMLOutputter
         $this->elementEnd('html');
         $this->endXML();
     }
+    
+    /**
+    *  To specify additional HTTP headers for the action
+    *
+    *  @return void
+    */
+    function extraHeaders()
+    {
+        // Needs to be overloaded
+    }
 
     /**
      * Output an HTML text input element