mirror of
https://github.com/sbrl/Pepperminty-Wiki.git
synced 2024-11-22 04:23:01 +00:00
515 lines
15 KiB
PHP
515 lines
15 KiB
PHP
<?php
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$start_time = time(true);
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{settings}
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///////////////////////////////////////////////////////////////////////////////////////////////
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/////////////// Do not edit below this line unless you know what you are doing! ///////////////
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///////////////////////////////////////////////////////////////////////////////////////////////
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$version = "0.5";
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session_start();
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///////// Login System /////////
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//clear expired sessions
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if(isset($_SESSION["$settings->sessionprefix-expiretime"]) and
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$_SESSION["$settings->sessionprefix-expiretime"] < time())
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{
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//clear the session variables
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$_SESSION = [];
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session_destroy();
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}
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if(!isset($_SESSION[$settings->sessionprefix . "-user"]) and
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!isset($_SESSION[$settings->sessionprefix . "-pass"]))
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{
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//the user is not logged in
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$isloggedin = false;
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}
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else
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{
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$user = $_SESSION[$settings->sessionprefix . "-user"];
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$pass = $_SESSION[$settings->sessionprefix . "-pass"];
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if($settings->users[$user] == $pass)
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{
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//the user is logged in
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$isloggedin = true;
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}
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else
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{
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//the user's login details are invalid (what is going on here?)
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//unset the session variables, treat them as an anonymous user, and get out of here
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$isloggedin = false;
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unset($user);
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unset($pass);
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//clear the session data
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$_SESSION = []; //delete al lthe variables
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session_destroy(); //destroy the session
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}
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}
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//check to see if the currently logged in user is an admin
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$isadmin = false;
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if($isloggedin)
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{
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foreach($settings->admins as $admin_username)
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{
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if($admin_username == $user)
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{
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$isadmin = true;
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break;
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}
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}
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}
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/////// Login System End ///////
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///////////////////////////////////////////////////////////////////////////////////////////
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//////////////////////////// Security and Consistency Measures ////////////////////////////
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///////////////////////////////////////////////////////////////////////////////////////////
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if(!file_exists("./pageindex.json"))
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{
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$existingpages = glob("*.md");
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$pageindex = new stdClass();
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foreach($existingpages as $pagefilename)
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{
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$newentry = new stdClass();
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$newentry->filename = utf8_encode($pagefilename);
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$newentry->size = filesize($pagefilename);
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$newentry->lastmodified = filemtime($pagefilename);
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$newentry->lasteditor = utf8_encode("unknown");
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$pagekey = utf8_encode(substr($pagefilename, 0, -3));
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$pageindex->$pagekey = $newentry;
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}
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file_put_contents("./pageindex.json", json_encode($pageindex, JSON_PRETTY_PRINT));
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unset($existingpages);
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}
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else
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{
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$pageindex = json_decode(file_get_contents("./pageindex.json"));
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}
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/*
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* @summary makes a path safe
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*
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* @details paths may only contain alphanumeric characters, spaces, underscores, and dashes
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*/
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function makepathsafe($string) { return preg_replace("/[^0-9a-zA-Z\_\-\ ]/i", "", $string); }
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/*
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* @summary Hides an email address from bots by adding random html entities.
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*
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* @returns The mangled email address.
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*/
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function hide_email($str)
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{
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$hidden_email = "";
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for($i = 0; $i < strlen($str); $i++)
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{
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if($str[$i] == "@")
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{
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$hidden_email .= "&#" . ord("@") . ";";
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continue;
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}
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if(rand(0, 1) == 0)
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$hidden_email .= $str[$i];
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else
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$hidden_email .= "&#" . ord($str[$i]) . ";";
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}
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return $hidden_email;
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}
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//Work around an Opera + Syntastic bug where there is no margin at the left hand side if there isn't a query string when accessing a .php file
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if(!isset($_GET["action"]) and !isset($_GET["page"]))
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{
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http_response_code(302);
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header("location: index.php?action=$settings->defaultaction&page=$defaultpage");
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exit();
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}
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//make sure that the action is set
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if(!isset($_GET["action"]))
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$_GET["action"] = $settings->defaultaction;
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//make sure that the page is set
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if(!isset($_GET["page"]) or strlen($_GET["page"]) === 0)
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$_GET["page"] = $settings->defaultpage;
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//redirect the user to the safe version of the path if they entered an unsafe character
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if(makepathsafe($_GET["page"]) !== $_GET["page"])
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{
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http_response_code(301);
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header("location: index.php?action=" . rawurlencode($_GET["action"]) . "&page=" . makepathsafe($_GET["page"]));
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header("x-requested-page: " . $_GET["page"]);
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header("x-actual-page: " . makepathsafe($_GET["page"]));
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exit();
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}
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$page = $_GET["page"];
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///////////////////////////////////////////////////////////////////////////////////////////
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///////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////// HTML fragments //////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////
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class page_renderer
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{
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public static $html_template = "<!DOCTYPE html>
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<html>
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<head>
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<meta charset='utf-8' />
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<title>{title}</title>
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<meta name='viewport' content='width=device-width, initial-scale=1' />
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<link rel='shortcut-icon' href='{favicon-url}' />
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{header-html}
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</head>
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<body>
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{body}
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<!-- Took {generation-time-taken} seconds to generate -->
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</body>
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</html>
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";
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public static $main_content_template = "{navigation-bar}
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<h1 class='sitename'>{sitename}</h1>
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{content}
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<footer>
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<p>Powered by Pepperminty Wiki, which was built by <a href='//starbeamrainbowlabs.com/'>Starbeamrainbowlabs</a>. Send bugs to 'bugs at starbeamrainbowlabs dot com' or open an issue <a href='//github.com/sbrl/Pepperminty-Wiki'>on github</a>.</p>
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<p>Your local friendly administrators are {admins-name-list}.
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<p>This wiki is managed by <a href='mailto:{admin-details-email}'>{admin-details-name}</a>.</p>
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</footer>
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{all-pages-datalist}";
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public static $minimal_content_template = "{content}
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<hr class='footerdivider' />
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<p><em>From {sitename}, which is managed by {admin-details-name}.</em></p>
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<p><em>Timed at {generation-date}</em>
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<p><em>Powered by Pepperminty Wiki.</em></p>";
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public static function render($title, $content, $body_template)
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{
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global $settings, $start_time;
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$result = self::$html_template;
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$result = str_replace("{body}", $body_template, $result);
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$result = str_replace([
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"{sitename}",
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"{favicon-url}",
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"{header-html}",
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"{navigation-bar}",
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"{admin-details-name}",
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"{admin-details-email}",
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"{admins-name-list}",
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"{generation-date}",
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"{all-pages-datalist}"
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], [
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$settings->sitename,
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$settings->favicon,
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self::get_css_as_html(),
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self::render_navigation_bar(),
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$settings->admindetails["name"],
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$settings->admindetails["email"],
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implode(", ", $settings->admins),
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date("l jS \of F Y \a\\t h:ia T"),
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self::generate_all_pages_datalist()
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], $result);
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$result = str_replace([
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"{title}",
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"{content}"
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], [
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$title,
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$content
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], $result);
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$result = str_replace("{generation-time-taken}", microtime(true) - $start_time, $result);
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return $result;
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}
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public static function render_main($title, $content)
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{
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return self::render($title, $content, self::$main_content_template);
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}
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public static function render_minimal($title, $content)
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{
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return self::render($title, $content, self::$minimal_content_template);
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}
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public static function get_css_as_html()
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{
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global $settings;
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if(preg_match("/^[^\/]*\/\/|^\//", $settings->css))
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return "<link rel='stylesheet' href='$settings->css' />";
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else
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return "<style>$settings->css</style>";
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}
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public static function render_navigation_bar()
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{
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global $settings, $user, $isloggedin, $page;
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$result = "<nav>\n";
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if($isloggedin)
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{
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$result .= "\t\t\tLogged in as " . self::render_username($user) . ". ";
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$result .= "<a href='index.php?action=logout'>Logout</a>. | \n";
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}
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else
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$result .= "\t\t\tBrowsing as Anonymous. <a href='index.php?action=login'>Login</a>. | \n";
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// loop over all the navigation links
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foreach($settings->navlinks as $item)
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{
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if(is_string($item))
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{
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//the item is a string
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switch($item)
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{
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//keywords
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case "search": //displays a search bar
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$result .= "\t\t\t<form method='get' action='index.php' style='display: inline;'><input type='search' name='page' list='allpages' placeholder='Type a page name here and hit enter' /></form>\n";
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break;
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//it isn't a keyword, so just output it directly
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default:
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$result .= "\t\t\t$item\n";
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}
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}
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else
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{
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//output the item as a link to a url
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$result .= "\t\t\t<a href='" . str_replace("{page}", $page, $item[1]) . "'>$item[0]</a>\n";
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}
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}
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$result .= "\t\t</nav>";
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return $result;
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}
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public static function render_username($name)
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{
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global $settings;
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$result = "";
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if(in_array($name, $settings->admins))
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$result .= $settings->admindisplaychar;
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$result .= $name;
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return $result;
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}
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public static function generate_all_pages_datalist()
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{
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global $pageindex;
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$result = "<datalist id='allpages'>\n";
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foreach($pageindex as $pagename => $pagedetails)
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{
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$result .= "\t\t\t<option value='$pagename' />\n";
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}
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$result = "\t\t</datalist>";
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return $result;
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}
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}
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////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////
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///////////////////////////////////////// Slimdown /////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////// %slimdown% //
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////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Slimdown - A very basic regex-based Markdown parser. Supports the
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* following elements (and can be extended via Slimdown::add_rule()):
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*
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* - Headers
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* - Links
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* - Bold
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* - Emphasis
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* - Deletions
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* - Quotes
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* - Inline code
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* - Blockquotes
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* - Ordered/unordered lists
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* - Horizontal rules
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*
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* Author: Johnny Broadway <johnny@johnnybroadway.com>
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* Website: https://gist.github.com/jbroadway/2836900
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* License: MIT
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*/
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/**
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* Modified by Starbeamrainbowlabs (starbeamrainbowlabs)
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*
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* Changed bold to use single asterisks
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* Changed italics to use single underscores
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* Added one to add the heading levels (no <h1> tags allowed)
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* Added wiki style internal link parsing
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* Added wiki style internal link parsing with display text
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*/
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class Slimdown {
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public static $rules = array (
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'/\r\n/' => "\n", // new line normalisation
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'/(#+)(.*)/' => 'self::header', // headers
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'/(\*)(.*?)\1/' => '<strong>\2</strong>', // bold
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// todo test these
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'/!\[(.*)\]\((.*)\)/' => '<img src="\2" alt="\1" />', // basic images
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// todo end
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'/(_)(.*?)\1/' => '<em>\2</em>', // emphasis
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'/\[\[([a-zA-Z0-9\_\- ]+)\|([a-zA-Z0-9\_\- ]+)\]\]/' => '<a href=\'index.php?page=\1\'>\2</a>', //internal links with display text
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'/\[\[([a-zA-Z0-9\_\- ]+)\]\]/' => '<a href=\'index.php?page=\1\'>\1</a>', //internal links
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'/\[([^\[]+)\]\(([^\)]+)\)/' => '<a href=\'\2\' target=\'_blank\'>\1</a>', // links
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'/\~\~(.*?)\~\~/' => '<del>\1</del>', // del
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'/\:\"(.*?)\"\:/' => '<q>\1</q>', // quote
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'/`(.*?)`/' => '<code>\1</code>', // inline code
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'/\n\s*(\*|-)(.*)/' => 'self::ul_list', // ul lists
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'/\n[0-9]+\.(.*)/' => 'self::ol_list', // ol lists
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'/\n(>|\>)(.*)/' => 'self::blockquote', // blockquotes
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'/\n-{3,}/' => "\n<hr />", // horizontal rule
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'/\n([^\n]+)\n\n/' => 'self::para', // add paragraphs
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'/<\/ul>\s?<ul>/' => '', // fix extra ul
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'/<\/ol>\s?<ol>/' => '', // fix extra ol
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'/<\/blockquote><blockquote>/' => "\n" // fix extra blockquote
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);
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private static function para ($regs) {
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$line = $regs[1];
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$trimmed = trim ($line);
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if (preg_match ('/^<\/?(ul|ol|li|h|p|bl)/', $trimmed)) {
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return "\n" . $line . "\n";
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}
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return sprintf ("\n<p>%s</p>\n", $trimmed);
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}
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private static function ul_list ($regs) {
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$item = $regs[2];
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return sprintf ("\n<ul>\n\t<li>%s</li>\n</ul>", trim($item));
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}
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private static function ol_list ($regs) {
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$item = $regs[1];
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return sprintf ("\n<ol>\n\t<li>%s</li>\n</ol>", trim($item));
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}
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private static function blockquote ($regs) {
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$item = $regs[2];
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return sprintf ("\n<blockquote>%s</blockquote>", trim($item));
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}
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private static function header ($regs) {
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list ($tmp, $chars, $header) = $regs;
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$level = strlen ($chars);
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return sprintf ('<h%d>%s</h%d>', $level + 1, trim($header), $level + 1);
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}
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/**
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* Add a rule.
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*/
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public static function add_rule ($regex, $replacement) {
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self::$rules[$regex] = $replacement;
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}
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/**
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* Render some Markdown into HTML.
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*/
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public static function render ($text) {
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foreach (self::$rules as $regex => $replacement) {
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if (is_callable ( $replacement)) {
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$text = preg_replace_callback ($regex, $replacement, $text);
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} else {
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$text = preg_replace ($regex, $replacement, $text);
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}
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}
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return trim ($text);
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}
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}
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////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////
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///////////////////////////////////////////
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//////////////// Functions ////////////////
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///////////////////////////////////////////
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//from http://php.net/manual/en/function.filesize.php#106569
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//edited by Starbeamrainbowlabs
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function human_filesize($bytes, $decimals = 2)
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{
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$sz = ["B", "KB", "MB", "GB", "TB", "PB", "EB", "YB", "ZB"];
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$factor = floor((strlen($bytes) - 1) / 3);
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return sprintf("%.{$decimals}f", $bytes / pow(1024, $factor)) . @$sz[$factor];
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}
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//from http://snippets.pro/snippet/137-php-convert-the-timestamp-to-human-readable-format/
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function human_time_since($time)
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{
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$timediff = time() - $time;
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$tokens = array (
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31536000 => 'year',
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2592000 => 'month',
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604800 => 'week',
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86400 => 'day',
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3600 => 'hour',
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60 => 'minute',
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1 => 'second'
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);
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foreach ($tokens as $unit => $text) {
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if ($timediff < $unit) continue;
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$numberOfUnits = floor($timediff / $unit);
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return $numberOfUnits.' '.$text.(($numberOfUnits>1)?'s':'').' ago';
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}
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}
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///////////////////////////////////////////
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//////////////////////////
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/// Module functions ///
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//////////////////////////
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// These functions are //
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// used by modules to //
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// register themselves //
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// or new pages. //
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//////////////////////////
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$modules = []; // list that contains all the loaded modules
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// function to register a module
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function register_module($moduledata)
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{
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global $modules;
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//echo("registering module\n");
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//var_dump($moduledata);
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$modules[] = $moduledata;
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}
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// function to register an action handler
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$actions = new stdClass();
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function add_action($action_name, $func)
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{
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global $actions;
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//echo("adding $action_name\n");
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$actions->$action_name = $func;
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}
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//////////////////////////////////////////////////////////////////
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// %next_module% //
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// execute each module's code
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foreach($modules as $moduledata)
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{
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$moduledata["code"]();
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}
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// make sure that the credits page exists
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if(!isset($actions->credits))
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{
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exit(page_renderer::render_main("Error - $settings->$sitename", "<p>No credits page detected. The credits page is a required module!</p>"));
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}
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// Perform the appropriate action
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$action_name = strtolower($_GET["action"]);
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if(isset($actions->$action_name))
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{
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$req_action_data = $actions->$action_name;
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$req_action_data();
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}
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else
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{
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exit(page_renderer::render_main("Error - $settings->sitename", "<p>No action called " . strtolower($_GET["action"]) ." has been registered. Perhaps you are missing a module?</p>"));
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}
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?>
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