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Pepperminty-Wiki/modules/page-view.php

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<?php
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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register_module([
"name" => "Page viewer",
"version" => "0.16.12",
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"author" => "Starbeamrainbowlabs",
"description" => "Allows you to view pages. You really should include this one.",
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"id" => "page-view",
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// Another random protection to ensure the credits are included
// The aim is to make it as annoying as possible to disentangle the credits from the rest of Pepperminty Wiki
// If you're reading this, you should know that credits are really important - lots of people have put in a huge amount of time and effort to make Pepperminty Wiki what it is today!
"depends" => [ "page-credits" ],
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"code" => function() {
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/**
* @api {get} ?action=view[&page={pageName}][&revision=rid][&printable=yes][&mode={mode}] View a page
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* @apiName View
* @apiGroup Page
* @apiPermission Anonymous
*
* @apiUse PageParameter
* @apiParam {number} revision The revision number to display.
* @apiParam {string} mode Optional. The display mode to use. Can hold the following values: 'normal' - The default. Sends a normal page. 'printable' - Sends a printable version of the page. 'contentonly' - Sends only the content of the page, not the extra stuff around it. 'parsedsourceonly' - Sends only the raw rendered source of the page, as it appears just after it has come out of the page parser. Useful for writing external tools (see also the `raw` action).
* @apiParam {string} redirect Optional. If set to 'no' (without quotes), causes the specified page to be shown - even if it would normally result in a redirect.
* @apiParam {string} redirected_from Optional. Cosmetic parameter that displays the name of the page that was redirected from. You will not normally need to use this.
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*
* @apiError NonExistentPageError The page doesn't exist and editing is disabled in the wiki's settings. If editing isn't disabled, you will be redirected to the edit page instead.
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* @apiError NonExistentRevisionError The specified revision was not found.
*/
/*
* ██ ██ ██ ███████ ██ ██
* ██ ██ ██ ██ ██ ██
* ██ ██ ██ █████ ██ ██
* ██ ██ ██ ██ ██ ███ ██
* ████ ██ ███████ ███ ███
*/
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add_action("view", function() {
global $pageindex, $settings, $env;
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// Check to make sure that the page exists
$page = $env->page;
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if(!isset($pageindex->$page)) {
// TODO: make this intelligent so we only redirect if the user is actually able to create the page
if($settings->editing) {
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// Editing is enabled, redirect to the editing page
$redirectUrl = "index.php?action=edit&newpage=yes&page=".rawurlencode($env->page);
if(isset($_GET["redirected_from"]))
$redirectUrl .= "&redirected_from=".rawurlencode($_GET["redirected_from"]);
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http_response_code(307); // Temporary redirect
header("location: $redirectUrl");
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exit();
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} else {
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// Editing is disabled, show an error message
http_response_code(404);
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exit(page_renderer::render_main("404: Page not found - $env->page - $settings->sitename", "<p>$env->page_safe does not exist.</p><p>Since editing is currently disabled on this wiki, you may not create this page. If you feel that this page should exist, try contacting this wiki's Administrator (see the bottom of this page for their contact details).</p>"));
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}
}
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header("last-modified: " . gmdate('D, d M Y H:i:s T', $pageindex->{$env->page}->lastmodified));
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// Perform a redirect if the requested page is a redirect page
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if(isset($pageindex->$page->redirect) &&
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$pageindex->$page->redirect === true) // If this is a redirect page.....
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{
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$send_redirect = true;
if(isset($_GET["redirect"]) && $_GET["redirect"] == "no")
$send_redirect = false;
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if((isset($pageindex->$page->redirect_absolute) &&
$pageindex->$page->redirect_absolute == true && // ...and it's absolute....
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$settings->redirect_absolute_enable === false)) // ...and absolute redirects are not enabled
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$send_redirect = false;
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if($send_redirect) {
// TODO: Send an explanatory page along with the redirect
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http_response_code(307);
$redirectUrl = "?action=$env->action&redirected_from=" . rawurlencode($env->page);
$hashCode = "";
$newPage = $pageindex->$page->redirect_target;
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if(strpos($newPage, "#") !== false) {
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// Extract the part after the hash symbol
$hashCode = substr($newPage, strpos($newPage, "#") + 1);
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// Remove the hash from the new page name
$newPage = substr($newPage, 0, strpos($newPage, "#"));
}
$redirectUrl .= "&page=" . rawurlencode($newPage);
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if(!empty($pageindex->$newPage->redirect))
$redirectUrl .= "&redirect=no";
if(strlen($hashCode) > 0)
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$redirectUrl .= "#".htmlentities($hashCode);
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// Support absolute redirect URLs
if(isset($pageindex->$page->redirect_absolute) && $pageindex->$page->redirect_absolute === true)
$redirectUrl = $pageindex->$page->redirect_target;
header("location: $redirectUrl");
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exit();
}
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}
$title = "$env->page - $settings->sitename";
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if(isset($pageindex->$page->protect) && $pageindex->$page->protect === true)
$title = $settings->protectedpagechar . $title;
$content = "";
if(!$env->is_history_revision)
$content .= "<h1>$env->page</h1>\n";
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else {
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$content .= "<h1>Revision #{$env->history->revision_number} of $env->page_safe</h1>\n";
$content .= "<p class='system-text-insert revision-note'><em>(Revision saved by ".htmlentities($env->history->revision_data->editor)." " . render_timestamp($env->history->revision_data->timestamp) . ". <a href='?page=" . rawurlencode($env->page) . "'>Jump to the current revision</a> or see a <a href='?action=history&page=" . rawurlencode($env->page) . "'>list of all revisions</a> for this page.)</em></p>\n";
}
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// Add a visit parent page link if we're a subpage
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if(get_page_parent($env->page) !== false)
$content .= "<p class='system-text-insert link-parent-page'><em><a href='?action=view&page=" . rawurlencode(get_page_parent($env->page)) . "'>&laquo; " . htmlentities(get_page_parent($env->page)) . "</a></em></p>\n";
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// Add an extra message if the requester was redirected from another page
if(isset($_GET["redirected_from"]))
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$content .= "<p class='system-text-insert'><em>Redirected from <a href='?page=" . rawurlencode($_GET["redirected_from"]) . "&redirect=no'>" . htmlentities($_GET["redirected_from"]) . "</a>.</em></p>\n";
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$parsing_start = microtime(true);
$rawRenderedSource = parse_page_source(file_get_contents($env->page_filename));
$content .= $rawRenderedSource;
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if(!empty($pageindex->$page->tags)) {
$content .= "<ul class='page-tags-display'>\n";
foreach($pageindex->$page->tags as $tag)
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$content .= "<li><a href='?action=list-tags&tag=" . rawurlencode($tag) . "'>".htmlentities($tag)."</a></li>\n";
$content .= "\n</ul>\n";
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}
/*else
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{
$content .= "<aside class='page-tags-display'><small><em>(No tags yet! Add some by <a href='?action=edit&page=" . rawurlencode($env->page) . "'>editing this page</a>!)</em></small></aside>\n";
}*/
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if($settings->show_subpages) {
$subpages = get_object_vars(get_subpages($pageindex, $env->page));
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if(count($subpages) > 0) {
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$content .= "<hr />";
$content .= "Subpages: ";
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foreach($subpages as $subpage => $times_removed) {
if($times_removed <= $settings->subpages_display_depth) {
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$content .= "<a href='?action=view&page=" . rawurlencode($subpage) . "'>".htmlentities($subpage)."</a>, ";
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}
}
// Remove the last comma from the content
$content = substr($content, 0, -2);
}
}
$content .= "\n\t\t<!-- Took " . round((microtime(true) - $parsing_start) * 1000, 2) . "ms to parse page source -->\n";
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// Prevent indexing of this page if it's still within the noindex
// time period
if(isset($settings->delayed_indexing_time) and
time() - $pageindex->{$env->page}->lastmodified < $settings->delayed_indexing_time)
header("x-robots-tag: noindex");
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$settings->footer_message = "$env->page_safe was last edited by {$pageindex->{$env->page}->lasteditor} at " . date('h:ia T \o\n j F Y', $pageindex->{$env->page}->lastmodified) . ".</p>\n<p>" . $settings->footer_message; // Add the last edited time to the footer
$mode = isset($_GET["mode"]) ? strtolower(trim($_GET["mode"])) : "normal";
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switch($mode) {
case "contentonly":
// Content only mode: Send only the content of the page
exit($content);
case "parsedsourceonly":
// Parsed source only mode: Send only the raw rendered source
exit($rawRenderedSource);
case "printable":
// Printable mode: Sends a printable version of the page
exit(page_renderer::render_minimal($title, $content));
case "normal":
default:
// Normal mode: Send a normal page
exit(page_renderer::render_main($title, $content));
}
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});
}
]);
?>