Catch errors when uploading files

Check if error code is greater than 0, and generate appropriate error message.

build/index.php

@@ -4370,6 +4370,19 @@ register_module([
 						exit(page_renderer::render("Upload failed - $settings->sitename", "<p>Your upload couldn't be processed because you are not logged in.</p><p>Try <a href='?action=login&returnto=" . rawurlencode("?action=upload") . "'>logging in</a> first."));
 					}
 
+					// Check for php upload errors
+					if($_FILES["file"]["error"] > 0)
+					{
+						if(!empty($_FILES["file"]))
+							unlink($_FILES["file"]["tmp_name"]);
+						if($_FILES["file"]["error"] == 1 || $_FILES["file"]["error"] == 2)
+							http_response_code(413); // file is too large
+						else
+							http_response_code(500); // something else went wrong
+						exit(page_renderer::render("Upload failed - $settings->sitename", "<p>Your upload couldn't be processed because " . (($_FILES["file"]["error"] == 1 || $_FILES["file"]["error"] == 2) ? "the file is too large" : "an error occurred") . ".</p><p>Please contact the administrator for assistance.</p>"));
+
+					}
+					
 					// Calculate the target name, removing any characters we
 					// are unsure about.
 					$target_name = makepathsafe($_POST["name"] ?? "Users/$env->user/Avatar");
@@ -6919,6 +6932,172 @@ register_module([
 
 
 
+register_module([
+	"name" => "Old Default Parser",
+	"version" => "0.10",
+	"author" => "Johnny Broadway & Starbeamrainbowlabs",
+	"description" => "The *old* default parser for Pepperminty Wiki. Based on Johnny Broadway's Slimdown (with more than a few modifications). This parser's features are documented in the help page. Superceded by a customised extension of parsedown extra.",
+	"id" => "parser-default-old",
+	"optional" => true,
+	"code" => function() {
+		global $settings;
+		
+		add_parser("default", function($markdown) {
+			return Slimdown::render($markdown);
+		});
+		
+		// Register the help section
+		if($settings->parser != "default")
+			return; // Don't register the help section if we aren't the currently set parser.
+		add_help_section("20-parser-default", "Editor Syntax", "<p>$settings->sitename's editor uses a modified version of slimdown, a flavour of markdown that is implementated using regular expressions. See the credits page for more information and links to the original source for this. A quick reference can be found below:</p>
+		<table>
+			<tr><th>Type This</th><th>To get this</th>
+			<tr><td><code>_italics_</code></td><td><em>italics</em></td></tr>
+			<tr><td><code>*bold*</code></td><td><strong>bold</strong></td></tr>
+			<tr><td><code>~~Strikethrough~~</code></td><td><del>Strikethough</del></td></tr>
+			<tr><td><code>`code`</code></td><td><code>code</code></td></tr>
+			<tr><td><code># Heading</code></td><td><h2>Heading</h2></td></tr>
+			<tr><td><code>## Sub Heading</code></td><td><h3>Sub Heading</h3></td></tr>
+			<tr><td><code>[[Internal Link]]</code></td><td><a href='index.php?page=Internal Link'>Internal Link</a></td></tr>
+			<tr><td><code>[[Display Text|Internal Link]]</code></td><td><a href='index.php?page=Internal Link'>Display Text</a></td></tr>
+			<tr><td><code>[Display text](//google.com/)</code></td><td><a href='//google.com/'>Display Text</a></td></tr>
+			<tr><td><code>&gt; Blockquote<br />&gt; Some text</code></td><td><blockquote> Blockquote<br />Some text</td></tr>
+			<tr><td><code> - Apples<br /> * Oranges</code></td><td><ul><li>Apples</li><li>Oranges</li></ul></td></tr>
+			<tr><td><code>1. This is<br />2. an ordered list</code></td><td><ol><li>This is</li><li>an ordered list</li></ol></td></tr>
+			<tr><td><code>
+		---
+		</code></td><td><hr /></td></tr>
+			<!--<tr><tds><code> - One
+	 - Two
+	 - Three</code></td><td><ul><li>One</li><li>Two</li><li>Three</li></ul></td></tr>-->
+			<tr><td><code>![Alt text](//starbeamrainbowlabs.com/favicon-small.png)</code></td><td><img src='//starbeamrainbowlabs.com/favicon-small.png' alt='Alt text' /></td></code>
+		</table>
+		
+		<p>In addition, the following extra syntax is supported for images:</p>
+		
+		<pre><code>Size the image to at most 250 pixels wide:
+	![Alt text](//starbeamrainbowlabs.com/favicon-small.png 250px)
+	
+	Size the image to at most 120px wide and have it float at the right ahnd size of the page:
+	![Alt text](//starbeamrainbowlabs.com/favicon-small.png 120px right)</code></pre>");
+	}
+]);
+
+/***********************************************************************
+ * ███████ ██      ██ ███    ███ ██████   ██████  ██     ██ ███    ██  *
+ * ██      ██      ██ ████  ████ ██   ██ ██    ██ ██     ██ ████   ██  *
+ * ███████ ██      ██ ██ ████ ██ ██   ██ ██    ██ ██  █  ██ ██ ██  ██  *
+ *      ██ ██      ██ ██  ██  ██ ██   ██ ██    ██ ██ ███ ██ ██  ██ ██  *
+ * ███████ ███████ ██ ██      ██ ██████   ██████   ███ ███  ██   ████  *
+ ***********************************************************************/
+/**
+ * Slimdown - A very basic regex-based Markdown parser. Supports the
+ * following elements (and can be extended via Slimdown::add_rule()):
+ *
+ * - Headers
+ * - Links
+ * - Bold
+ * - Emphasis
+ * - Deletions
+ * - Quotes
+ * - Inline code
+ * - Blockquotes
+ * - Ordered/unordered lists
+ * - Horizontal rules
+ *
+ * Author: Johnny Broadway <johnny@johnnybroadway.com>
+ * Website: https://gist.github.com/jbroadway/2836900
+ * License: MIT
+ */
+
+/**
+ * Modified by Starbeamrainbowlabs (starbeamrainbowlabs)
+ * 
+ 	* Changed bold to use single asterisks
+ 	* Changed italics to use single underscores
+ 	* Added one to add the heading levels (no <h1> tags allowed)
+ 	* Added wiki style internal link parsing
+ 	* Added wiki style internal link parsing with display text
+ 	* Added image support
+ */
+class Slimdown {
+	public static $rules = array (
+		'/\r\n/' => "\n",											// new line normalisation
+		'/^(#+)(.*)/' => 'self::header',								// headers
+		'/(\*+)(.*?)\1/' => '<strong>\2</strong>',					// bold
+		'/(_)(.*?)\1/' => '<em>\2</em>',							// emphasis
+		
+		'/!\[(.*)\]\(([^\s]+)\s(\d+.+)\s(left|right)\)/' => '<img src="\2" alt="\1" style="max-width: \3; float: \4;" />',		// images with size
+		'/!\[(.*)\]\(([^\s]+)\s(\d+.+)\)/' => '<img src="\2" alt="\1" style="max-width: \3;" />',		// images with size
+		'/!\[(.*)\]\((.*)\)/' => '<img src="\2" alt="\1" />',		// basic images
+		
+		'/\[\[([a-zA-Z0-9\_\- ]+)\|([a-zA-Z0-9\_\- ]+)\]\]/' => '<a href=\'index.php?page=\1\'>\2</a>',	//internal links with display text
+		'/\[\[([a-zA-Z0-9\_\- ]+)\]\]/' => '<a href=\'index.php?page=\1\'>\1</a>',	//internal links
+		'/\[([^\[]+)\]\(([^\)]+)\)/' => '<a href=\'\2\' target=\'_blank\'>\1</a>',	// links
+		'/\~\~(.*?)\~\~/' => '<del>\1</del>',						// del
+		'/\:\"(.*?)\"\:/' => '<q>\1</q>',							// quote
+		'/`(.*?)`/' => '<code>\1</code>',							// inline code
+		'/\n\s*(\*|-)(.*)/' => 'self::ul_list',						// ul lists
+		'/\n[0-9]+\.(.*)/' => 'self::ol_list',						// ol lists
+		'/\n(&gt;|\>)(.*)/' => 'self::blockquote',					// blockquotes
+		'/\n-{3,}/' => "\n<hr />",									// horizontal rule
+		'/\n([^\n]+)\n\n/' => 'self::para',							// add paragraphs
+		'/<\/ul>\s?<ul>/' => '',									// fix extra ul
+		'/<\/ol>\s?<ol>/' => '',									// fix extra ol
+		'/<\/blockquote><blockquote>/' => "\n"						// fix extra blockquote
+	);
+	private static function para ($regs) {
+		$line = $regs[1];
+		$trimmed = trim ($line);
+		if (preg_match ('/^<\/?(ul|ol|li|h|p|bl)/', $trimmed)) {
+			return "\n" . $line . "\n";
+		}
+		return sprintf ("\n<p>%s</p>\n", $trimmed);
+	}
+	private static function ul_list ($regs) {
+		$item = $regs[2];
+		return sprintf ("\n<ul>\n\t<li>%s</li>\n</ul>", trim($item));
+	}
+	private static function ol_list ($regs) {
+		$item = $regs[1];
+		return sprintf ("\n<ol>\n\t<li>%s</li>\n</ol>", trim($item));
+	}
+	private static function blockquote ($regs) {
+		$item = $regs[2];
+		return sprintf ("\n<blockquote>%s</blockquote>", trim($item));
+	}
+	private static function header ($regs) {
+		list ($tmp, $chars, $header) = $regs;
+		$level = strlen ($chars);
+		return sprintf ('<h%d>%s</h%d>', $level + 1, trim($header), $level + 1);
+	}
+	
+	/**
+	 * Add a rule.
+	 */
+	public static function add_rule ($regex, $replacement) {
+		self::$rules[$regex] = $replacement;
+	}
+	/**
+	 * Render some Markdown into HTML.
+	 */
+	public static function render ($text) {
+		foreach (self::$rules as $regex => $replacement) {
+			if (is_callable ( $replacement)) {
+				$text = preg_replace_callback ($regex, $replacement, $text);
+			} else {
+				$text = preg_replace ($regex, $replacement, $text);
+			}
+		}
+		return trim ($text);
+	}
+}
+////////////////////////////////////////////////////////////////////////////////////////////
+////////////////////////////////////////////////////////////////////////////////////////////
+
+
+
+
 register_module([
 	"name" => "Parsedown",
 	"version" => "0.9.9",

modules/feature-upload.php

@@ -119,6 +119,19 @@ register_module([
 						exit(page_renderer::render("Upload failed - $settings->sitename", "<p>Your upload couldn't be processed because you are not logged in.</p><p>Try <a href='?action=login&returnto=" . rawurlencode("?action=upload") . "'>logging in</a> first."));
 					}
 
+					// Check for php upload errors
+					if($_FILES["file"]["error"] > 0)
+					{
+						if(!empty($_FILES["file"]))
+							unlink($_FILES["file"]["tmp_name"]);
+						if($_FILES["file"]["error"] == 1 || $_FILES["file"]["error"] == 2)
+							http_response_code(413); // file is too large
+						else
+							http_response_code(500); // something else went wrong
+						exit(page_renderer::render("Upload failed - $settings->sitename", "<p>Your upload couldn't be processed because " . (($_FILES["file"]["error"] == 1 || $_FILES["file"]["error"] == 2) ? "the file is too large" : "an error occurred") . ".</p><p>Please contact the administrator for assistance.</p>"));
+
+					}
+					
 					// Calculate the target name, removing any characters we
 					// are unsure about.
 					$target_name = makepathsafe($_POST["name"] ?? "Users/$env->user/Avatar");