/**
* Return a page's cached content
*/
public function testCachedVersion()
{
$page = new CachedPage(self::$testCacheDir, self::$url, true);
$this->assertFileNotExists(self::$filename);
$page->cache('<p>Some content</p>');
$this->assertFileExists(self::$filename);
$this->assertEquals('<p>Some content</p>', $page->cachedVersion());
}
function showDailyRSS()
{
// Cache system
$query = $_SERVER["QUERY_STRING"];
$cache = new CachedPage($GLOBALS['config']['PAGECACHE'], page_url($_SERVER), startsWith($query, 'do=dailyrss') && !isLoggedIn());
$cached = $cache->cachedVersion();
if (!empty($cached)) {
echo $cached;
exit;
}
// If cached was not found (or not usable), then read the database and build the response:
// Read links from database (and filter private links if used it not logged in).
$LINKSDB = new LinkDB($GLOBALS['config']['DATASTORE'], isLoggedIn(), $GLOBALS['config']['HIDE_PUBLIC_LINKS'], $GLOBALS['redirector']);
/* Some Shaarlies may have very few links, so we need to look
back in time (rsort()) until we have enough days ($nb_of_days).
*/
$linkdates = array();
foreach ($LINKSDB as $linkdate => $value) {
$linkdates[] = $linkdate;
}
rsort($linkdates);
$nb_of_days = 7;
// We take 7 days.
$today = Date('Ymd');
$days = array();
foreach ($linkdates as $linkdate) {
$day = substr($linkdate, 0, 8);
// Extract day (without time)
if (strcmp($day, $today) < 0) {
if (empty($days[$day])) {
$days[$day] = array();
}
$days[$day][] = $linkdate;
}
if (count($days) > $nb_of_days) {
break;
// Have we collected enough days?
}
}
// Build the RSS feed.
header('Content-Type: application/rss+xml; charset=utf-8');
$pageaddr = escape(index_url($_SERVER));
echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
echo '<channel>';
echo '<title>Daily - ' . $GLOBALS['title'] . '</title>';
echo '<link>' . $pageaddr . '</link>';
echo '<description>Daily shared links</description>';
echo '<language>en-en</language>';
echo '<copyright>' . $pageaddr . '</copyright>' . PHP_EOL;
// For each day.
foreach ($days as $day => $linkdates) {
$daydate = linkdate2timestamp($day . '_000000');
// Full text date
$rfc822date = linkdate2rfc822($day . '_000000');
$absurl = escape(index_url($_SERVER) . '?do=daily&day=' . $day);
// Absolute URL of the corresponding "Daily" page.
// Build the HTML body of this RSS entry.
$html = '';
$href = '';
$links = array();
// We pre-format some fields for proper output.
foreach ($linkdates as $linkdate) {
$l = $LINKSDB[$linkdate];
$l['formatedDescription'] = format_description($l['description'], $GLOBALS['redirector']);
$l['thumbnail'] = thumbnail($l['url']);
$l['timestamp'] = linkdate2timestamp($l['linkdate']);
if (startsWith($l['url'], '?')) {
$l['url'] = index_url($_SERVER) . $l['url'];
// make permalink URL absolute
}
$links[$linkdate] = $l;
}
// Then build the HTML for this day:
$tpl = new RainTPL();
$tpl->assign('title', $GLOBALS['title']);
$tpl->assign('daydate', $daydate);
$tpl->assign('absurl', $absurl);
$tpl->assign('links', $links);
$tpl->assign('rfc822date', escape($rfc822date));
$html = $tpl->draw('dailyrss', $return_string = true);
echo $html . PHP_EOL;
}
echo '</channel></rss><!-- Cached version of ' . escape(page_url($_SERVER)) . ' -->';
$cache->cache(ob_get_contents());
ob_end_flush();
exit;
}
function renderPage()
{
$LINKSDB = new LinkDB($GLOBALS['config']['DATASTORE'], isLoggedIn(), $GLOBALS['config']['HIDE_PUBLIC_LINKS'], $GLOBALS['redirector'], $GLOBALS['config']['REDIRECTOR_URLENCODE']);
$updater = new Updater(read_updates_file($GLOBALS['config']['UPDATES_FILE']), $GLOBALS, $LINKSDB, isLoggedIn());
try {
$newUpdates = $updater->update();
if (!empty($newUpdates)) {
write_updates_file($GLOBALS['config']['UPDATES_FILE'], $updater->getDoneUpdates());
}
} catch (Exception $e) {
die($e->getMessage());
}
$PAGE = new PageBuilder();
$PAGE->assign('linkcount', count($LINKSDB));
$PAGE->assign('privateLinkcount', count_private($LINKSDB));
// Determine which page will be rendered.
$query = isset($_SERVER['QUERY_STRING']) ? $_SERVER['QUERY_STRING'] : '';
$targetPage = Router::findPage($query, $_GET, isLoggedIn());
// Call plugin hooks for header, footer and includes, specifying which page will be rendered.
// Then assign generated data to RainTPL.
$common_hooks = array('includes', 'header', 'footer');
$pluginManager = PluginManager::getInstance();
foreach ($common_hooks as $name) {
$plugin_data = array();
$pluginManager->executeHooks('render_' . $name, $plugin_data, array('target' => $targetPage, 'loggedin' => isLoggedIn()));
$PAGE->assign('plugins_' . $name, $plugin_data);
}
// -------- Display login form.
if ($targetPage == Router::$PAGE_LOGIN) {
if ($GLOBALS['config']['OPEN_SHAARLI']) {
header('Location: ?');
exit;
}
// No need to login for open Shaarli
$token = '';
if (ban_canLogin()) {
$token = getToken();
}
// Do not waste token generation if not useful.
$PAGE->assign('token', $token);
if (isset($_GET['username'])) {
$PAGE->assign('username', escape($_GET['username']));
}
$PAGE->assign('returnurl', isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : '');
$PAGE->renderPage('loginform');
exit;
}
// -------- User wants to logout.
if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=logout')) {
invalidateCaches($GLOBALS['config']['PAGECACHE']);
logout();
header('Location: ?');
exit;
}
// -------- Picture wall
if ($targetPage == Router::$PAGE_PICWALL) {
// Optionally filter the results:
$links = $LINKSDB->filterSearch($_GET);
$linksToDisplay = array();
// Get only links which have a thumbnail.
foreach ($links as $link) {
$permalink = '?' . escape(smallhash($link['linkdate']));
$thumb = lazyThumbnail($link['url'], $permalink);
if ($thumb != '') {
$link['thumbnail'] = $thumb;
// Thumbnail HTML code.
$linksToDisplay[] = $link;
// Add to array.
}
}
$data = array('linksToDisplay' => $linksToDisplay);
$pluginManager->executeHooks('render_picwall', $data, array('loggedin' => isLoggedIn()));
foreach ($data as $key => $value) {
$PAGE->assign($key, $value);
}
$PAGE->renderPage('picwall');
exit;
}
// -------- Tag cloud
if ($targetPage == Router::$PAGE_TAGCLOUD) {
$tags = $LINKSDB->allTags();
// We sort tags alphabetically, then choose a font size according to count.
// First, find max value.
$maxcount = 0;
foreach ($tags as $value) {
$maxcount = max($maxcount, $value);
}
// Sort tags alphabetically: case insensitive, support locale if avalaible.
uksort($tags, function ($a, $b) {
// Collator is part of PHP intl.
if (class_exists('Collator')) {
$c = new Collator(setlocale(LC_COLLATE, 0));
if (!intl_is_failure(intl_get_error_code())) {
return $c->compare($a, $b);
}
}
return strcasecmp($a, $b);
});
$tagList = array();
foreach ($tags as $key => $value) {
// Tag font size scaling:
// default 15 and 30 logarithm bases affect scaling,
// 22 and 6 are arbitrary font sizes for max and min sizes.
$size = log($value, 15) / log($maxcount, 30) * 2.2 + 0.8;
$tagList[$key] = array('count' => $value, 'size' => number_format($size, 2, '.', ''));
}
$data = array('tags' => $tagList);
$pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => isLoggedIn()));
foreach ($data as $key => $value) {
$PAGE->assign($key, $value);
}
$PAGE->renderPage('tagcloud');
exit;
}
// Daily page.
if ($targetPage == Router::$PAGE_DAILY) {
showDaily($PAGE, $LINKSDB);
}
// ATOM and RSS feed.
if ($targetPage == Router::$PAGE_FEED_ATOM || $targetPage == Router::$PAGE_FEED_RSS) {
$feedType = $targetPage == Router::$PAGE_FEED_RSS ? FeedBuilder::$FEED_RSS : FeedBuilder::$FEED_ATOM;
header('Content-Type: application/' . $feedType . '+xml; charset=utf-8');
// Cache system
$query = $_SERVER['QUERY_STRING'];
$cache = new CachedPage($GLOBALS['config']['PAGECACHE'], page_url($_SERVER), startsWith($query, 'do=' . $targetPage) && !isLoggedIn());
$cached = $cache->cachedVersion();
if (!empty($cached)) {
echo $cached;
exit;
}
// Generate data.
$feedGenerator = new FeedBuilder($LINKSDB, $feedType, $_SERVER, $_GET, isLoggedIn());
$feedGenerator->setLocale(strtolower(setlocale(LC_COLLATE, 0)));
$feedGenerator->setHideDates($GLOBALS['config']['HIDE_TIMESTAMPS'] && !isLoggedIn());
$feedGenerator->setUsePermalinks(isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS']);
if (!empty($GLOBALS['config']['PUBSUBHUB_URL'])) {
$feedGenerator->setPubsubhubUrl($GLOBALS['config']['PUBSUBHUB_URL']);
}
$data = $feedGenerator->buildData();
// Process plugin hook.
$pluginManager = PluginManager::getInstance();
$pluginManager->executeHooks('render_feed', $data, array('loggedin' => isLoggedIn(), 'target' => $targetPage));
// Render the template.
$PAGE->assignAll($data);
$PAGE->renderPage('feed.' . $feedType);
$cache->cache(ob_get_contents());
ob_end_flush();
exit;
}
// Display openseach plugin (XML)
if ($targetPage == Router::$PAGE_OPENSEARCH) {
header('Content-Type: application/xml; charset=utf-8');
$PAGE->assign('serverurl', index_url($_SERVER));
$PAGE->renderPage('opensearch');
exit;
}
// -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
if (isset($_GET['addtag'])) {
// Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
if (empty($_SERVER['HTTP_REFERER'])) {
header('Location: ?searchtags=' . urlencode($_GET['addtag']));
exit;
}
// In case browser does not send HTTP_REFERER
parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
// Prevent redirection loop
if (isset($params['addtag'])) {
unset($params['addtag']);
}
// Check if this tag is already in the search query and ignore it if it is.
// Each tag is always separated by a space
if (isset($params['searchtags'])) {
$current_tags = explode(' ', $params['searchtags']);
} else {
$current_tags = array();
}
$addtag = true;
foreach ($current_tags as $value) {
if ($value === $_GET['addtag']) {
$addtag = false;
break;
}
}
// Append the tag if necessary
if (empty($params['searchtags'])) {
$params['searchtags'] = trim($_GET['addtag']);
} else {
if ($addtag) {
$params['searchtags'] = trim($params['searchtags']) . ' ' . trim($_GET['addtag']);
}
}
unset($params['page']);
// We also remove page (keeping the same page has no sense, since the results are different)
header('Location: ?' . http_build_query($params));
exit;
}
// -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
if (isset($_GET['removetag'])) {
// Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
if (empty($_SERVER['HTTP_REFERER'])) {
header('Location: ?');
exit;
}
// In case browser does not send HTTP_REFERER
parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
// Prevent redirection loop
if (isset($params['removetag'])) {
unset($params['removetag']);
}
if (isset($params['searchtags'])) {
$tags = explode(' ', $params['searchtags']);
// Remove value from array $tags.
$tags = array_diff($tags, array($_GET['removetag']));
$params['searchtags'] = implode(' ', $tags);
if (empty($params['searchtags'])) {
unset($params['searchtags']);
}
unset($params['page']);
// We also remove page (keeping the same page has no sense, since the results are different)
}
header('Location: ?' . http_build_query($params));
exit;
}
// -------- User wants to change the number of links per page (linksperpage=...)
if (isset($_GET['linksperpage'])) {
if (is_numeric($_GET['linksperpage'])) {
$_SESSION['LINKS_PER_PAGE'] = abs(intval($_GET['linksperpage']));
}
header('Location: ' . generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage')));
exit;
}
// -------- User wants to see only private links (toggle)
if (isset($_GET['privateonly'])) {
if (empty($_SESSION['privateonly'])) {
$_SESSION['privateonly'] = 1;
// See only private links
} else {
unset($_SESSION['privateonly']);
// See all links
}
header('Location: ' . generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('privateonly')));
exit;
}
// -------- Handle other actions allowed for non-logged in users:
if (!isLoggedIn()) {
// User tries to post new link but is not logged in:
// Show login screen, then redirect to ?post=...
if (isset($_GET['post'])) {
header('Location: ?do=login&post=' . urlencode($_GET['post']) . (!empty($_GET['title']) ? '&title=' . urlencode($_GET['title']) : '') . (!empty($_GET['description']) ? '&description=' . urlencode($_GET['description']) : '') . (!empty($_GET['source']) ? '&source=' . urlencode($_GET['source']) : ''));
// Redirect to login page, then back to post link.
exit;
}
showLinkList($PAGE, $LINKSDB);
if (isset($_GET['edit_link'])) {
header('Location: ?do=login&edit_link=' . escape($_GET['edit_link']));
exit;
}
exit;
// Never remove this one! All operations below are reserved for logged in user.
}
// -------- All other functions are reserved for the registered user:
// -------- Display the Tools menu if requested (import/export/bookmarklet...)
if ($targetPage == Router::$PAGE_TOOLS) {
$data = array('pageabsaddr' => index_url($_SERVER));
$pluginManager->executeHooks('render_tools', $data);
foreach ($data as $key => $value) {
$PAGE->assign($key, $value);
}
$PAGE->renderPage('tools');
exit;
}
// -------- User wants to change his/her password.
if ($targetPage == Router::$PAGE_CHANGEPASSWORD) {
if ($GLOBALS['config']['OPEN_SHAARLI']) {
die('You are not supposed to change a password on an Open Shaarli.');
}
if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword'])) {
if (!tokenOk($_POST['token'])) {
die('Wrong token.');
}
// Go away!
// Make sure old password is correct.
$oldhash = sha1($_POST['oldpassword'] . $GLOBALS['login'] . $GLOBALS['salt']);
if ($oldhash != $GLOBALS['hash']) {
echo '<script>alert("The old password is not correct.");document.location=\'?do=changepasswd\';</script>';
exit;
}
// Save new password
$GLOBALS['salt'] = sha1(uniqid('', true) . '_' . mt_rand());
// Salt renders rainbow-tables attacks useless.
$GLOBALS['hash'] = sha1($_POST['setpassword'] . $GLOBALS['login'] . $GLOBALS['salt']);
try {
writeConfig($GLOBALS, isLoggedIn());
} catch (Exception $e) {
error_log('ERROR while writing config file after changing password.' . PHP_EOL . $e->getMessage());
// TODO: do not handle exceptions/errors in JS.
echo '<script>alert("' . $e->getMessage() . '");document.location=\'?do=tools\';</script>';
exit;
}
echo '<script>alert("Your password has been changed.");document.location=\'?do=tools\';</script>';
exit;
} else {
$PAGE->assign('token', getToken());
$PAGE->renderPage('changepassword');
exit;
}
}
// -------- User wants to change configuration
if ($targetPage == Router::$PAGE_CONFIGURE) {
if (!empty($_POST['title'])) {
if (!tokenOk($_POST['token'])) {
die('Wrong token.');
// Go away!
}
$tz = 'UTC';
if (!empty($_POST['continent']) && !empty($_POST['city']) && isTimeZoneValid($_POST['continent'], $_POST['city'])) {
$tz = $_POST['continent'] . '/' . $_POST['city'];
}
$GLOBALS['timezone'] = $tz;
$GLOBALS['title'] = $_POST['title'];
$GLOBALS['titleLink'] = $_POST['titleLink'];
$GLOBALS['redirector'] = $_POST['redirector'];
$GLOBALS['disablesessionprotection'] = !empty($_POST['disablesessionprotection']);
$GLOBALS['privateLinkByDefault'] = !empty($_POST['privateLinkByDefault']);
$GLOBALS['config']['ENABLE_RSS_PERMALINKS'] = !empty($_POST['enableRssPermalinks']);
$GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
$GLOBALS['config']['HIDE_PUBLIC_LINKS'] = !empty($_POST['hidePublicLinks']);
try {
writeConfig($GLOBALS, isLoggedIn());
} catch (Exception $e) {
error_log('ERROR while writing config file after configuration update.' . PHP_EOL . $e->getMessage());
// TODO: do not handle exceptions/errors in JS.
echo '<script>alert("' . $e->getMessage() . '");document.location=\'?do=tools\';</script>';
exit;
}
echo '<script>alert("Configuration was saved.");document.location=\'?do=tools\';</script>';
exit;
} else {
$PAGE->assign('token', getToken());
$PAGE->assign('title', empty($GLOBALS['title']) ? '' : $GLOBALS['title']);
$PAGE->assign('redirector', empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector']);
list($timezone_form, $timezone_js) = generateTimeZoneForm($GLOBALS['timezone']);
$PAGE->assign('timezone_form', $timezone_form);
$PAGE->assign('timezone_js', $timezone_js);
$PAGE->renderPage('configure');
exit;
}
}
// -------- User wants to rename a tag or delete it
if ($targetPage == Router::$PAGE_CHANGETAG) {
if (empty($_POST['fromtag']) || empty($_POST['totag']) && isset($_POST['renametag'])) {
$PAGE->assign('token', getToken());
$PAGE->assign('tags', $LINKSDB->allTags());
$PAGE->renderPage('changetag');
exit;
}
if (!tokenOk($_POST['token'])) {
die('Wrong token.');
}
// Delete a tag:
if (isset($_POST['deletetag']) && !empty($_POST['fromtag'])) {
$needle = trim($_POST['fromtag']);
// True for case-sensitive tag search.
$linksToAlter = $LINKSDB->filterSearch(array('searchtags' => $needle), true);
foreach ($linksToAlter as $key => $value) {
$tags = explode(' ', trim($value['tags']));
unset($tags[array_search($needle, $tags)]);
// Remove tag.
$value['tags'] = trim(implode(' ', $tags));
$LINKSDB[$key] = $value;
}
$LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
echo '<script>alert("Tag was removed from ' . count($linksToAlter) . ' links.");document.location=\'?\';</script>';
exit;
}
// Rename a tag:
if (isset($_POST['renametag']) && !empty($_POST['fromtag']) && !empty($_POST['totag'])) {
$needle = trim($_POST['fromtag']);
// True for case-sensitive tag search.
$linksToAlter = $LINKSDB->filterSearch(array('searchtags' => $needle), true);
foreach ($linksToAlter as $key => $value) {
$tags = explode(' ', trim($value['tags']));
$tags[array_search($needle, $tags)] = trim($_POST['totag']);
// Replace tags value.
$value['tags'] = trim(implode(' ', $tags));
$LINKSDB[$key] = $value;
}
$LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
// Save to disk.
echo '<script>alert("Tag was renamed in ' . count($linksToAlter) . ' links.");document.location=\'?searchtags=' . urlencode($_POST['totag']) . '\';</script>';
exit;
}
}
// -------- User wants to add a link without using the bookmarklet: Show form.
if ($targetPage == Router::$PAGE_ADDLINK) {
$PAGE->renderPage('addlink');
exit;
}
// -------- User clicked the "Save" button when editing a link: Save link to database.
if (isset($_POST['save_edit'])) {
// Go away!
if (!tokenOk($_POST['token'])) {
die('Wrong token.');
}
// Remove multiple spaces.
$tags = trim(preg_replace('/\\s\\s+/', ' ', $_POST['lf_tags']));
// Remove first '-' char in tags.
$tags = preg_replace('/(^| )\\-/', '$1', $tags);
// Remove duplicates.
$tags = implode(' ', array_unique(explode(' ', $tags)));
$linkdate = $_POST['lf_linkdate'];
$url = trim($_POST['lf_url']);
if (!startsWith($url, 'http:') && !startsWith($url, 'https:') && !startsWith($url, 'ftp:') && !startsWith($url, 'magnet:') && !startsWith($url, '?') && !startsWith($url, 'javascript:')) {
$url = 'http://' . $url;
}
$link = array('title' => trim($_POST['lf_title']), 'url' => $url, 'description' => $_POST['lf_description'], 'private' => isset($_POST['lf_private']) ? 1 : 0, 'linkdate' => $linkdate, 'tags' => str_replace(',', ' ', $tags));
// If title is empty, use the URL as title.
if ($link['title'] == '') {
$link['title'] = $link['url'];
}
$pluginManager->executeHooks('save_link', $link);
$LINKSDB[$linkdate] = $link;
$LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
pubsubhub();
// If we are called from the bookmarklet, we must close the popup:
if (isset($_GET['source']) && ($_GET['source'] == 'bookmarklet' || $_GET['source'] == 'firefoxsocialapi')) {
echo '<script>self.close();</script>';
exit;
}
$returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?';
$location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
// Scroll to the link which has been edited.
$location .= '#' . smallHash($_POST['lf_linkdate']);
// After saving the link, redirect to the page the user was on.
header('Location: ' . $location);
exit;
}
// -------- User clicked the "Cancel" button when editing a link.
if (isset($_POST['cancel_edit'])) {
// If we are called from the bookmarklet, we must close the popup:
if (isset($_GET['source']) && ($_GET['source'] == 'bookmarklet' || $_GET['source'] == 'firefoxsocialapi')) {
echo '<script>self.close();</script>';
exit;
}
$returnurl = isset($_POST['returnurl']) ? $_POST['returnurl'] : '?';
$returnurl .= '#' . smallHash($_POST['lf_linkdate']);
// Scroll to the link which has been edited.
$returnurl = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
header('Location: ' . $returnurl);
// After canceling, redirect to the page the user was on.
exit;
}
// -------- User clicked the "Delete" button when editing a link: Delete link from database.
if (isset($_POST['delete_link'])) {
if (!tokenOk($_POST['token'])) {
die('Wrong token.');
}
// We do not need to ask for confirmation:
// - confirmation is handled by JavaScript
// - we are protected from XSRF by the token.
$linkdate = $_POST['lf_linkdate'];
$pluginManager->executeHooks('delete_link', $LINKSDB[$linkdate]);
unset($LINKSDB[$linkdate]);
$LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
// save to disk
// If we are called from the bookmarklet, we must close the popup:
if (isset($_GET['source']) && ($_GET['source'] == 'bookmarklet' || $_GET['source'] == 'firefoxsocialapi')) {
echo '<script>self.close();</script>';
exit;
}
// Pick where we're going to redirect
// =============================================================
// Basically, we can't redirect to where we were previously if it was a permalink
// or an edit_link, because it would 404.
// Cases:
// - / : nothing in $_GET, redirect to self
// - /?page : redirect to self
// - /?searchterm : redirect to self (there might be other links)
// - /?searchtags : redirect to self
// - /permalink : redirect to / (the link does not exist anymore)
// - /?edit_link : redirect to / (the link does not exist anymore)
// PHP treats the permalink as a $_GET variable, so we need to check if every condition for self
// redirect is not satisfied, and only then redirect to /
$location = "?";
// Self redirection
if (count($_GET) == 0 || isset($_GET['page']) || isset($_GET['searchterm']) || isset($_GET['searchtags'])) {
if (isset($_POST['returnurl'])) {
$location = $_POST['returnurl'];
// Handle redirects given by the form
} else {
$location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('delete_link'));
}
}
header('Location: ' . $location);
// After deleting the link, redirect to appropriate location
exit;
}
// -------- User clicked the "EDIT" button on a link: Display link edit form.
if (isset($_GET['edit_link'])) {
$link = $LINKSDB[$_GET['edit_link']];
// Read database
if (!$link) {
header('Location: ?');
exit;
}
// Link not found in database.
$data = array('link' => $link, 'link_is_new' => false, 'token' => getToken(), 'http_referer' => isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : '', 'tags' => $LINKSDB->allTags());
$pluginManager->executeHooks('render_editlink', $data);
foreach ($data as $key => $value) {
$PAGE->assign($key, $value);
}
$PAGE->renderPage('editlink');
exit;
}
// -------- User want to post a new link: Display link edit form.
if (isset($_GET['post'])) {
$url = cleanup_url($_GET['post']);
$link_is_new = false;
// Check if URL is not already in database (in this case, we will edit the existing link)
$link = $LINKSDB->getLinkFromUrl($url);
if (!$link) {
$link_is_new = true;
$linkdate = strval(date('Ymd_His'));
// Get title if it was provided in URL (by the bookmarklet).
$title = empty($_GET['title']) ? '' : escape($_GET['title']);
// Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
$description = empty($_GET['description']) ? '' : escape($_GET['description']);
$tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
$private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
// If this is an HTTP(S) link, we try go get the page to extract the title (otherwise we will to straight to the edit form.)
if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
// Short timeout to keep the application responsive
list($headers, $content) = get_http_response($url, 4);
if (strpos($headers[0], '200 OK') !== false) {
// Retrieve charset.
$charset = get_charset($headers, $content);
// Extract title.
$title = html_extract_title($content);
// Re-encode title in utf-8 if necessary.
if (!empty($title) && strtolower($charset) != 'utf-8') {
$title = mb_convert_encoding($title, 'utf-8', $charset);
}
}
}
if ($url == '') {
$url = '?' . smallHash($linkdate);
$title = 'Note: ';
}
$url = escape($url);
$title = escape($title);
$link = array('linkdate' => $linkdate, 'title' => $title, 'url' => $url, 'description' => $description, 'tags' => $tags, 'private' => $private);
}
$data = array('link' => $link, 'link_is_new' => $link_is_new, 'token' => getToken(), 'http_referer' => isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : '', 'source' => isset($_GET['source']) ? $_GET['source'] : '', 'tags' => $LINKSDB->allTags());
$pluginManager->executeHooks('render_editlink', $data);
foreach ($data as $key => $value) {
$PAGE->assign($key, $value);
}
$PAGE->renderPage('editlink');
exit;
}
if ($targetPage == Router::$PAGE_EXPORT) {
// Export links as a Netscape Bookmarks file
if (empty($_GET['selection'])) {
$PAGE->renderPage('export');
exit;
}
// export as bookmarks_(all|private|public)_YYYYmmdd_HHMMSS.html
$selection = $_GET['selection'];
if (isset($_GET['prepend_note_url'])) {
$prependNoteUrl = $_GET['prepend_note_url'];
} else {
$prependNoteUrl = false;
}
try {
$PAGE->assign('links', NetscapeBookmarkUtils::filterAndFormat($LINKSDB, $selection, $prependNoteUrl, index_url($_SERVER)));
} catch (Exception $exc) {
header('Content-Type: text/plain; charset=utf-8');
echo $exc->getMessage();
exit;
}
$now = new DateTime();
header('Content-Type: text/html; charset=utf-8');
header('Content-disposition: attachment; filename=bookmarks_' . $selection . '_' . $now->format(LinkDB::LINK_DATE_FORMAT) . '.html');
$PAGE->assign('date', $now->format(DateTime::RFC822));
$PAGE->assign('eol', PHP_EOL);
$PAGE->assign('selection', $selection);
$PAGE->renderPage('export.bookmarks');
exit;
}
// -------- User is uploading a file for import
if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=upload')) {
// If file is too big, some form field may be missing.
if (!isset($_POST['token']) || !isset($_FILES) || isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size'] == 0) {
$returnurl = empty($_SERVER['HTTP_REFERER']) ? '?' : $_SERVER['HTTP_REFERER'];
echo '<script>alert("The file you are trying to upload is probably bigger than what this webserver can accept (' . getMaxFileSize() . ' bytes). Please upload in smaller chunks.");document.location=\'' . escape($returnurl) . '\';</script>';
exit;
}
if (!tokenOk($_POST['token'])) {
die('Wrong token.');
}
importFile($LINKSDB);
exit;
}
// -------- Show upload/import dialog:
if ($targetPage == Router::$PAGE_IMPORT) {
$PAGE->assign('token', getToken());
$PAGE->assign('maxfilesize', getMaxFileSize());
$PAGE->renderPage('import');
exit;
}
// Plugin administration page
if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
$pluginMeta = $pluginManager->getPluginsMeta();
// Split plugins into 2 arrays: ordered enabled plugins and disabled.
$enabledPlugins = array_filter($pluginMeta, function ($v) {
return $v['order'] !== false;
});
// Load parameters.
$enabledPlugins = load_plugin_parameter_values($enabledPlugins, $GLOBALS['plugins']);
uasort($enabledPlugins, function ($a, $b) {
return $a['order'] - $b['order'];
});
$disabledPlugins = array_filter($pluginMeta, function ($v) {
return $v['order'] === false;
});
$PAGE->assign('enabledPlugins', $enabledPlugins);
$PAGE->assign('disabledPlugins', $disabledPlugins);
$PAGE->renderPage('pluginsadmin');
exit;
}
// Plugin administration form action
if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
try {
if (isset($_POST['parameters_form'])) {
unset($_POST['parameters_form']);
foreach ($_POST as $param => $value) {
$GLOBALS['plugins'][$param] = escape($value);
}
} else {
$GLOBALS['config']['ENABLED_PLUGINS'] = save_plugin_config($_POST);
}
writeConfig($GLOBALS, isLoggedIn());
} catch (Exception $e) {
error_log('ERROR while saving plugin configuration:.' . PHP_EOL . $e->getMessage());
// TODO: do not handle exceptions/errors in JS.
echo '<script>alert("' . $e->getMessage() . '");document.location=\'?do=' . Router::$PAGE_PLUGINSADMIN . '\';</script>';
exit;
}
header('Location: ?do=' . Router::$PAGE_PLUGINSADMIN);
exit;
}
// -------- Otherwise, simply display search form and links:
showLinkList($PAGE, $LINKSDB);
exit;
}