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shimmie2/contrib/wiki/main.php
2009-07-28 04:50:21 +01:00

212 lines
5.3 KiB
PHP

<?php
/**
* Name: Simple Wiki
* Author: Shish <webmaster@shishnet.org>
* License: GPLv2
* Description: A simple wiki, for those who don't want the hugeness of mediawiki
*/
class WikiUpdateEvent extends Event {
var $user;
var $wikipage;
public function WikiUpdateEvent(User $user, WikiPage $wikipage) {
$this->user = $user;
$this->wikipage = $wikipage;
}
}
class WikiPage {
var $id;
var $owner_id;
var $owner_ip;
var $date;
var $title;
var $revision;
var $locked;
var $body;
public function WikiPage($row) {
assert(!empty($row));
$this->id = $row['id'];
$this->owner_id = $row['owner_id'];
$this->owner_ip = $row['owner_ip'];
$this->date = $row['date'];
$this->title = $row['title'];
$this->revision = $row['revision'];
$this->locked = ($row['locked'] == 'Y');
$this->body = $row['body'];
}
public function get_owner() {
return User::by_id($this->owner_id);
}
public function is_locked() {
return $this->locked;
}
}
class Wiki extends SimpleExtension {
public function onInitExt($event) {
$this->setup();
}
public function onPageRequest($event) {
global $config, $page, $user;
if($event->page_matches("wiki")) {
if(is_null($event->get_arg(0)) || strlen(trim($event->get_arg(0))) == 0) {
$title = "Index";
}
else {
$title = $event->get_arg(0);
}
$content = $this->get_page($title);
// save the POST data as the page
if(isset($_GET['save']) && $_GET['save'] == "on") {
$title = $_POST['title'];
$rev = int_escape($_POST['revision']);
$body = $_POST['body'];
$lock = isset($_POST['lock']) && ($_POST['lock'] == "on");
if($this->can_edit($user, $this->get_page($title))) {
$wikipage = $this->get_page($title);
$wikipage->rev = $rev;
$wikipage->body = $body;
$wikipage->locked = $user->is_admin() ? $lock : false;
send_event(new WikiUpdateEvent($user, $wikipage));
$u_title = url_escape($title);
$page->set_mode("redirect");
$page->set_redirect(make_link("wiki/$u_title"));
}
else {
$this->theme->display_permission_denied($page);
}
}
// edit
else if(isset($_GET['edit']) && $_GET['edit'] == "on") {
$this->theme->display_page_editor($page, $content);
}
// default: display the page
else {
$this->theme->display_page($page, $content, $this->get_page("wiki:sidebar"));
}
}
}
public function onWikiUpdate($event) {
$this->set_page($event->user, $event->wikipage);
}
public function onSetupBuilding($event) {
$sb = new SetupBlock("Wiki");
$sb->add_bool_option("wiki_edit_anon", "Allow anonymous edits: ");
$sb->add_bool_option("wiki_edit_user", "<br>Allow user edits: ");
$event->panel->add_block($sb);
}
/**
* See if the given user is allowed to edit the given page
*
* @retval boolean
*/
public static function can_edit(User $user, WikiPage $page) {
global $config;
// admins can edit everything
if($user->is_admin()) return true;
// anon / user can't ever edit locked pages
if($page->is_locked()) return false;
// anon / user can edit if allowed by config
if($config->get_bool("wiki_edit_anon", false) && $user->is_anonymous()) return true;
if($config->get_bool("wiki_edit_user", false) && !$user->is_anonymous()) return true;
return false;
}
private function setup() {
global $database;
global $config;
if($config->get_int("ext_wiki_version", 0) < 1) {
$database->create_table("wiki_pages", "
id SCORE_AIPK,
owner_id INTEGER NOT NULL,
owner_ip SCORE_INET NOT NULL,
date DATETIME DEFAULT NULL,
title VARCHAR(255) NOT NULL,
revision INTEGER NOT NULL DEFAULT 1,
locked SCORE_BOOL NOT NULL DEFAULT SCORE_BOOL_N,
body TEXT NOT NULL,
UNIQUE (title, revision),
FOREIGN KEY (owner_id) REFERENCES users(id) ON DELETE CASCADE
");
$config->set_int("ext_wiki_version", 2);
}
if($config->get_int("ext_wiki_version") < 2) {
$database->Execute("ALTER TABLE wiki_pages ADD COLUMN
locked ENUM('Y', 'N') DEFAULT 'N' NOT NULL AFTER REVISION");
$config->set_int("ext_wiki_version", 2);
}
}
private function get_page($title, $revision=-1) {
global $database;
// first try and get the actual page
$row = $database->db->GetRow("
SELECT *
FROM wiki_pages
WHERE title LIKE ?
ORDER BY revision DESC", array($title));
// fall back to wiki:default
if(empty($row)) {
$row = $database->db->GetRow("
SELECT *
FROM wiki_pages
WHERE title LIKE ?
ORDER BY revision DESC", "wiki:default");
// fall further back to manual
if(empty($row)) {
$row = array(
"id" => -1,
"owner_ip" => "0.0.0.0",
"date" => "",
"revision" => 0,
"locked" => false,
"body" => "This is a default page for when a page is empty, ".
"it can be edited by editing [[wiki:default]].",
);
}
// correct the default
global $config;
$row["title"] = $title;
$row["owner_id"] = $config->get_int("anon_id", 0);
}
assert(!empty($row));
return new WikiPage($row);
}
private function set_page(User $user, WikiPage $wpage) {
global $database;
// FIXME: deal with collisions
$row = $database->Execute("
INSERT INTO wiki_pages(owner_id, owner_ip, date, title, revision, locked, body)
VALUES (?, ?, now(), ?, ?, ?, ?)", array($user->id, $_SERVER['REMOTE_ADDR'],
$wpage->title, $wpage->rev, $wpage->locked?'Y':'N', $wpage->body));
}
}
?>