/**
* add one activity record
*
* @param array e.g., array('anchor' => 'article:123', 'action' => 'edit')
* @return mixed some error array, or 'OK'
*/
function post($parameters)
{
global $context;
// look for an anchor
if (empty($parameters['anchor'])) {
return array('code' => -32602, 'message' => 'Invalid param "anchor"');
}
// look for an action
if (empty($parameters['action'])) {
return array('code' => -32602, 'message' => 'Invalid param "action"');
}
// save this in the database
Activities::post($parameters['anchor'], $parameters['action']);
// done
return 'OK';
}
/**
* record a click
*
* @param string the external url that is targeted
*
*/
public static function click($url)
{
global $context;
// we record only GET requests
if (isset($_SERVER['REQUEST_METHOD']) && $_SERVER['REQUEST_METHOD'] != 'GET') {
return;
}
// do not count crawling
if (isset($_SERVER['HTTP_USER_AGENT']) && preg_match('/(blo\\.gs|\\bblog|bot\\b|crawler\\b|frontier\\b|slurp\\b|spider\\b)/i', $_SERVER['HTTP_USER_AGENT'])) {
return;
}
// record the activity
Activities::post($url, 'click');
// do not record clicks driving to search engines
if (preg_match('/\\b(google|yahoo)\\b/i', $url)) {
return;
}
// if this url is known
$query = "SELECT * FROM " . SQL::table_name('links') . " AS links" . " WHERE links.link_url LIKE '" . SQL::escape($url) . "'";
if ($item = SQL::query_first($query)) {
// increment the number of clicks
$query = "UPDATE " . SQL::table_name('links') . " SET hits=hits+1 WHERE id = " . SQL::escape($item['id']);
SQL::query($query);
// else create a new record with a count of one click
} else {
// get the section for clicks
$anchor = Sections::lookup('clicks');
// no section yet, create one
if (!$anchor) {
$fields['nick_name'] = 'clicks';
$fields['title'] = i18n::c('Clicks');
$fields['introduction'] = i18n::c('Clicked links are referenced here.');
$fields['description'] = i18n::c('YACS ties automatically external links to this section on use. Therefore, you will have below a global picture of external sites that are referenced through your site.');
$fields['active_set'] = 'N';
// for associates only
$fields['locked'] = 'Y';
// no direct contributions
$fields['index_map'] = 'N';
// listd only to associates
$fields['rank'] = 20000;
// towards the end of the list
// reference the new section
if ($fields['id'] = Sections::post($fields)) {
$anchor = 'section:' . $fields['id'];
}
}
// create a new link in the database
$fields = array();
$fields['anchor'] = $anchor;
$fields['link_url'] = $url;
$fields['hits'] = 1;
Surfer::check_default_editor($fields);
if ($fields['id'] = Links::post($fields)) {
Links::clear($fields);
}
}
}
$menu[] = Skin::build_submit_button(i18n::s('Download this file'), NULL, NULL, 'confirmed', 'no_spin_on_click');
$menu[] = Skin::build_link($anchor->get_url('files'), i18n::s('Cancel'), 'span');
// to get the actual file
$target_href = $context['url_to_home'] . $context['url_to_root'] . Files::get_url($item['id'], 'fetch', $item['file_name']);
// render commands
$context['text'] .= '<form method="post" action="' . $context['script_url'] . '" id="main_form"><div>' . "\n" . Skin::finalize_list($menu, 'assistant_bar') . '<input type="hidden" name="id" value="' . $item['id'] . '" />' . "\n" . '<input type="hidden" name="action" value="confirm" />' . "\n" . '</div></form>' . "\n";
// set the focus
Page::insert_script('$("#confirmed").focus();');
//actual transfer
} elseif ($item['id'] && $item['anchor']) {
// increment the count of downloads
if (!Surfer::is_crawler()) {
Files::increment_hits($item['id']);
}
// record surfer activity
Activities::post('file:' . $item['id'], 'fetch');
$anchor->touch('file:fetch', 'file:' . $item['id'], true);
// if we have an external reference, use it
if (isset($item['file_href']) && $item['file_href']) {
$target_href = $item['file_href'];
// we have direct access to the file
} else {
// ensure a valid file name
$file_name = utf8::to_ascii($item['file_name']);
// where the file is located
$path = Files::get_path($item['anchor']) . '/' . $item['file_name'];
// file attributes
$attributes = array();
// transmit file content
if (!headers_sent() && ($handle = Safe::fopen($context['path_to_root'] . $path, "rb")) && ($stat = Safe::fstat($handle))) {
// stream FLV files if required to do so
}
if (is_object($anchor) && Surfer::may_upload()) {
$menu = array_merge($menu, array('files/edit.php?anchor=' . $anchor->get_reference() => i18n::s('Upload another file')));
}
$follow_up .= Skin::build_list($menu, 'menu_bar');
$context['text'] .= Skin::build_block($follow_up, 'bottom');
// forward to the updated page
} else {
// touch the related anchor
$anchor->touch('file:update', $_REQUEST['id'], isset($_REQUEST['silent']) && $_REQUEST['silent'] == 'Y');
// clear cache
Files::clear($_REQUEST);
// increment the post counter of the surfer
Users::increment_posts(Surfer::get_id());
// record surfer activity
Activities::post('file:' . $_REQUEST['id'], 'upload');
if ($render_overlaid) {
echo 'post done';
die;
}
// forward to the anchor page
Safe::redirect($anchor->get_url('files'));
}
// display the form on GET
} else {
$with_form = TRUE;
}
// display the form
if ($with_form) {
// prevent updates from section owner or associate
if (isset($item['assign_id']) && $item['assign_id'] && !Surfer::is($item['assign_id'])) {
/**
* process uploaded file
*
* This function processes files from the temporary directory, and put them at their definitive
* place.
*
* It returns FALSE if there is a disk error, or if some virus has been detected, or if
* the operation fails for some other reason (e.g., file size).
*
* @param array usually, $_FILES['upload']
* @param string target location for the file
* @param mixed reference to the target anchor, of a function to parse every file individually
* @return mixed file name or array of file names or FALSE if an error has occured
*/
public static function upload($input, $file_path, $target = NULL, $overlay = NULL)
{
global $context, $_REQUEST;
// size exceeds php.ini settings -- UPLOAD_ERR_INI_SIZE
if (isset($input['error']) && $input['error'] == 1) {
Logger::error(i18n::s('The size of this file is over limit.'));
} elseif (isset($input['error']) && $input['error'] == 2) {
Logger::error(i18n::s('The size of this file is over limit.'));
} elseif (isset($input['error']) && $input['error'] == 3) {
Logger::error(i18n::s('No file has been transmitted.'));
} elseif (isset($input['error']) && $input['error'] == 4) {
Logger::error(i18n::s('No file has been transmitted.'));
} elseif (!$input['size']) {
Logger::error(i18n::s('No file has been transmitted.'));
}
// do we have a file?
if (!isset($input['name']) || !$input['name'] || $input['name'] == 'none') {
return FALSE;
}
// access the temporary uploaded file
$file_upload = $input['tmp_name'];
// $_FILES transcoding to utf8 is not automatic
$input['name'] = utf8::encode($input['name']);
// enhance file name
$file_name = $input['name'];
$file_extension = '';
$position = strrpos($input['name'], '.');
if ($position !== FALSE) {
$file_name = substr($input['name'], 0, $position);
$file_extension = strtolower(substr($input['name'], $position + 1));
}
$input['name'] = $file_name;
if ($file_extension) {
$input['name'] .= '.' . $file_extension;
}
// ensure we have a file name
$file_name = utf8::to_ascii($input['name']);
// uploads are not allowed
if (!Surfer::may_upload()) {
Logger::error(i18n::s('You are not allowed to perform this operation.'));
} elseif (!Files::is_authorized($input['name'])) {
Logger::error(i18n::s('This type of file is not allowed.'));
} elseif ($file_path && !Safe::is_uploaded_file($file_upload)) {
Logger::error(i18n::s('Possible file attack.'));
} else {
// create folders
if ($file_path) {
Safe::make_path($file_path);
}
// sanity check
if ($file_path && $file_path[strlen($file_path) - 1] != '/') {
$file_path .= '/';
}
// move the uploaded file
if ($file_path && !Safe::move_uploaded_file($file_upload, $context['path_to_root'] . $file_path . $file_name)) {
Logger::error(sprintf(i18n::s('Impossible to move the upload file to %s.'), $file_path . $file_name));
} else {
// process the file where it is
if (!$file_path) {
$file_path = str_replace($context['path_to_root'], '', dirname($file_upload));
$file_name = basename($file_upload);
}
// check against viruses
$result = Files::has_virus($context['path_to_root'] . $file_path . '/' . $file_name);
// no virus has been found in this file
if ($result == 'N') {
$context['text'] .= Skin::build_block(i18n::s('No virus has been found.'), 'note');
}
// this file has been infected!
if ($result == 'Y') {
// delete this file immediately
Safe::unlink($file_path . '/' . $file_name);
Logger::error(i18n::s('This file has been infected by a virus and has been rejected!'));
return FALSE;
}
// explode a .zip file
include_once $context['path_to_root'] . 'shared/zipfile.php';
if (preg_match('/\\.zip$/i', $file_name) && isset($_REQUEST['explode_files'])) {
$zipfile = new zipfile();
// check files extracted from the archive file
function explode_callback($name)
{
global $context;
// reject all files put in sub-folders
if (($path = substr($name, strlen($context['uploaded_path'] . '/'))) && strpos($path, '/') !== FALSE) {
Safe::unlink($name);
} elseif (!Files::is_authorized($name)) {
Safe::unlink($name);
} else {
// make it easy to download
$ascii = utf8::to_ascii(basename($name));
Safe::rename($name, $context['uploaded_path'] . '/' . $ascii);
// remember this name
$context['uploaded_files'][] = $ascii;
}
}
// extract archive components and save them in mentioned directory
$context['uploaded_files'] = array();
$context['uploaded_path'] = $file_path;
if (!($count = $zipfile->explode($context['path_to_root'] . $file_path . '/' . $file_name, $file_path, '', 'explode_callback'))) {
Logger::error(sprintf('Nothing has been extracted from %s.', $file_name));
return FALSE;
}
// one single file has been uploaded
} else {
$context['uploaded_files'] = array($file_name);
}
// ensure we know the surfer
Surfer::check_default_editor($_REQUEST);
// post-process all uploaded files
foreach ($context['uploaded_files'] as $file_name) {
// this will be filtered by umask anyway
Safe::chmod($context['path_to_root'] . $file_path . $file_name, $context['file_mask']);
// invoke post-processing function
if ($target && is_callable($target)) {
call_user_func($target, $file_name, $context['path_to_root'] . $file_path);
// we have to update an anchor page
} elseif ($target && is_string($target)) {
$fields = array();
// update a file with the same name for this anchor
if ($matching =& Files::get_by_anchor_and_name($target, $file_name)) {
$fields['id'] = $matching['id'];
} elseif (isset($input['id']) && ($matching = Files::get($input['id']))) {
$fields['id'] = $matching['id'];
// silently delete the previous version of the file
if (isset($matching['file_name'])) {
Safe::unlink($file_path . '/' . $matching['file_name']);
}
}
// prepare file record
$fields['file_name'] = $file_name;
$fields['file_size'] = filesize($context['path_to_root'] . $file_path . $file_name);
$fields['file_href'] = '';
$fields['anchor'] = $target;
// change title
if (isset($_REQUEST['title'])) {
$fields['title'] = $_REQUEST['title'];
}
// change has been documented
if (!isset($_REQUEST['version']) || !$_REQUEST['version']) {
$_REQUEST['version'] = '';
} else {
$_REQUEST['version'] = ' - ' . $_REQUEST['version'];
}
// always remember file uploads, for traceability
$_REQUEST['version'] = $fields['file_name'] . ' (' . Skin::build_number($fields['file_size'], i18n::s('bytes')) . ')' . $_REQUEST['version'];
// add to file history
$fields['description'] = Files::add_to_history($matching, $_REQUEST['version']);
// if this is an image, maybe we can derive a thumbnail for it?
if (Files::is_image($file_name)) {
include_once $context['path_to_root'] . 'images/image.php';
Image::shrink($context['path_to_root'] . $file_path . $file_name, $context['path_to_root'] . $file_path . 'thumbs/' . $file_name);
if (file_exists($context['path_to_root'] . $file_path . 'thumbs/' . $file_name)) {
$fields['thumbnail_url'] = $context['url_to_home'] . $context['url_to_root'] . $file_path . 'thumbs/' . rawurlencode($file_name);
}
}
// change active_set
if (isset($_REQUEST['active_set'])) {
$fields['active_set'] = $_REQUEST['active_set'];
}
// change source
if (isset($_REQUEST['source'])) {
$fields['source'] = $_REQUEST['source'];
}
// change keywords
if (isset($_REQUEST['keywords'])) {
$fields['keywords'] = $_REQUEST['keywords'];
}
// change alternate_href
if (isset($_REQUEST['alternate_href'])) {
$fields['alternate_href'] = $_REQUEST['alternate_href'];
}
// overlay, if any
if (is_object($overlay)) {
// allow for change detection
$overlay->snapshot();
// update the overlay from form content
$overlay->parse_fields($_REQUEST);
// save content of the overlay in this item
$fields['overlay'] = $overlay->save();
$fields['overlay_id'] = $overlay->get_id();
}
// create the record in the database
if (!($fields['id'] = Files::post($fields))) {
return FALSE;
}
// record surfer activity
Activities::post('file:' . $fields['id'], 'upload');
}
}
// so far so good
if (count($context['uploaded_files']) == 1) {
return $context['uploaded_files'][0];
} else {
return $context['uploaded_files'];
}
}
}
// some error has occured
return FALSE;
}
/**
* retrieve recipients of last post
*
* This is useful to list all persons notified after a post for example.
*
* @param string the reference of the notifying item, if any
* @return mixed text to be integrated into the page
*/
public static function build_recipients($reference = '')
{
global $context;
// nothing to show
if (!isset($context['mailer_recipients'])) {
return '';
}
// title mentions number of recipients
$count = count($context['mailer_recipients']);
$title = sprintf(i18n::ns('%d person has been notified', '%d persons have been notified', $count), $count);
// remember the number of notifications sent from this anchor
if ($reference) {
Activities::post($reference, 'notify', $count);
}
// return the bare list
if (!$title) {
return $context['mailer_recipients'];
}
// build a nice list
$list = array();
if ($count > 50) {
$count = 30;
} else {
$count = 100;
}
//never reached
foreach ($context['mailer_recipients'] as $recipient) {
$list[] = htmlspecialchars($recipient);
if ($count-- == 1) {
$list[] = sprintf(i18n::s('and %d other persons'), count($context['mailer_recipients']) - 30);
break;
}
}
return '<hr align="left" size="1" width="200" />' . Skin::build_box($title, Skin::finalize_list($list, 'compact'), 'folded');
}
