Official Addons for the Friendica Communications Platform. (please note that this is a clone of the repository at github, issues are handled there)
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<?php
/**
* Name: WindowsPhonePush
* Description: Enable push notification to send information to Friendica Mobile app on Windows phone (count of unread timeline entries, text of last posting - if wished by user)
* Version: 2.0
* Author: Gerhard Seeber <http://friendica.seeber.at/profile/admin>
*
*
* Pre-requisite: Windows Phone mobile device (at least WP 7.0)
* Friendica mobile app on Windows Phone
*
* When addon is installed, the system calls the addon
* name_install() function, located in 'addon/name/name.php',
* where 'name' is the name of the addon.
* If the addon is removed from the configuration list, the
* system will call the name_uninstall() function.
*
* Version history:
* 1.1 : addon crashed on php versions >= 5.4 as of removed deprecated call-time
* pass-by-reference used in function calls within function windowsphonepush_content
* 2.0 : adaption for supporting emphasizing new entries in app (count on tile cannot be read out,
* so we need to retrieve counter through show_settings secondly). Provide new function for
* calling from app to set the counter back after start (if user starts again before cronjob
* sets the counter back
* count only unseen elements which are not type=activity (likes and dislikes not seen as new elements)
*/
use Friendica\App;
use Friendica\Content\Text\BBCode;
use Friendica\Content\Text\HTML;
use Friendica\Core\Addon;
use Friendica\Core\Authentication;
use Friendica\Core\L10n;
use Friendica\Core\Logger;
use Friendica\Core\PConfig;
use Friendica\Database\DBA;
use Friendica\Model\Item;
use Friendica\Model\User;
function windowsphonepush_install()
{
/* Our addon will attach in three places.
* The first is within cron - so the push notifications will be
* sent every 10 minutes (or whatever is set in crontab).
*/
Addon::registerHook('cron', 'addon/windowsphonepush/windowsphonepush.php', 'windowsphonepush_cron');
/* Then we'll attach into the addon settings page, and also the
* settings post hook so that we can create and update
* user preferences. User shall be able to activate the addon and
* define whether he allows pushing first characters of item text
*/
Addon::registerHook('addon_settings', 'addon/windowsphonepush/windowsphonepush.php', 'windowsphonepush_settings');
Addon::registerHook('addon_settings_post', 'addon/windowsphonepush/windowsphonepush.php', 'windowsphonepush_settings_post');
Logger::log("installed windowsphonepush");
}
function windowsphonepush_uninstall()
{
/* uninstall unregisters any hooks created with register_hook
* during install. Don't delete data in table `pconfig`.
*/
Addon::unregisterHook('cron', 'addon/windowsphonepush/windowsphonepush.php', 'windowsphonepush_cron');
Addon::unregisterHook('addon_settings', 'addon/windowsphonepush/windowsphonepush.php', 'windowsphonepush_settings');
Addon::unregisterHook('addon_settings_post', 'addon/windowsphonepush/windowsphonepush.php', 'windowsphonepush_settings_post');
Logger::log("removed windowsphonepush");
}
/* declare the windowsphonepush function so that /windowsphonepush url requests will land here */
function windowsphonepush_module()
{
}
/* Callback from the settings post function.
* $post contains the $_POST array.
* We will make sure we've got a valid user account
* and if so set our configuration setting for this person.
*/
function windowsphonepush_settings_post($a, $post)
{
if (!local_user() || (!x($_POST, 'windowsphonepush-submit'))) {
return;
}
$enable = intval($_POST['windowsphonepush']);
PConfig::set(local_user(), 'windowsphonepush', 'enable', $enable);
if ($enable) {
PConfig::set(local_user(), 'windowsphonepush', 'counterunseen', 0);
}
PConfig::set(local_user(), 'windowsphonepush', 'senditemtext', intval($_POST['windowsphonepush-senditemtext']));
info(L10n::t('WindowsPhonePush settings updated.') . EOL);
}
/* Called from the Addon Setting form.
* Add our own settings info to the page.
*/
function windowsphonepush_settings(&$a, &$s)
{
if (!local_user()) {
return;
}
/* Add our stylesheet to the page so we can make our settings look nice */
$a->page['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="' . $a->getBaseURL() . '/addon/windowsphonepush/windowsphonepush.css' . '" media="all" />' . "\r\n";
/* Get the current state of our config variables */
$enabled = PConfig::get(local_user(), 'windowsphonepush', 'enable');
$checked_enabled = (($enabled) ? ' checked="checked" ' : '');
$senditemtext = PConfig::get(local_user(), 'windowsphonepush', 'senditemtext');
$checked_senditemtext = (($senditemtext) ? ' checked="checked" ' : '');
$device_url = PConfig::get(local_user(), 'windowsphonepush', 'device_url');
/* Add some HTML to the existing form */
$s .= '<div class="settings-block">';
$s .= '<h3>' . L10n::t('WindowsPhonePush Settings') . '</h3>';
$s .= '<div id="windowsphonepush-enable-wrapper">';
$s .= '<label id="windowsphonepush-enable-label" for="windowsphonepush-enable-chk">' . L10n::t('Enable WindowsPhonePush Addon') . '</label>';
$s .= '<input id="windowsphonepush-enable-chk" type="checkbox" name="windowsphonepush" value="1" ' . $checked_enabled . '/>';
$s .= '</div><div class="clear"></div>';
$s .= '<div id="windowsphonepush-senditemtext-wrapper">';
$s .= '<label id="windowsphonepush-senditemtext-label" for="windowsphonepush-senditemtext-chk">' . L10n::t('Push text of new item') . '</label>';
$s .= '<input id="windowsphonepush-senditemtext-chk" type="checkbox" name="windowsphonepush-senditemtext" value="1" ' . $checked_senditemtext . '/>';
$s .= '</div><div class="clear"></div>';
/* provide a submit button - enable und senditemtext can be changed by the user */
$s .= '<div class="settings-submit-wrapper" ><input type="submit" id="windowsphonepush-submit" name="windowsphonepush-submit" class="settings-submit" value="' . L10n::t('Save Settings') . '" /></div><div class="clear"></div>';
/* provide further read-only information concerning the addon (useful for */
$s .= '<div id="windowsphonepush-device_url-wrapper">';
$s .= '<label id="windowsphonepush-device_url-label" for="windowsphonepush-device_url-text">Device-URL</label>';
$s .= '<input id="windowsphonepush-device_url-text" type="text" readonly value=' . $device_url . '/>';
$s .= '</div><div class="clear"></div></div>';
return;
}
/* Cron function used to regularly check all users on the server with active windowsphonepushaddon and send
* notifications to the Microsoft servers and consequently to the Windows Phone device
*/
function windowsphonepush_cron()
{
// retrieve all UID's for which the addon windowsphonepush is enabled and loop through every user
$r = q("SELECT * FROM `pconfig` WHERE `cat` = 'windowsphonepush' AND `k` = 'enable' AND `v` = 1");
if (count($r)) {
foreach ($r as $rr) {
// load stored information for the user-id of the current loop
$device_url = PConfig::get($rr['uid'], 'windowsphonepush', 'device_url');
$lastpushid = PConfig::get($rr['uid'], 'windowsphonepush', 'lastpushid');
// pushing only possible if device_url (the URI on Microsoft server) is available or not "NA" (which will be sent
// by app if user has switched the server setting in app - sending blank not possible as this would return an update error)
if (( $device_url == "" ) || ( $device_url == "NA" )) {
// no Device-URL for the user availabe, but addon is enabled --> write info to Logger
Logger::log("WARN: windowsphonepush is enable for user " . $rr['uid'] . ", but no Device-URL is specified for the user.");
} else {
// retrieve the number of unseen items and the id of the latest one (if there are more than
// one new entries since last poller run, only the latest one will be pushed)
$count = q("SELECT count(`id`) as count, max(`id`) as max FROM `item` WHERE `unseen` = 1 AND `type` <> 'activity' AND `uid` = %d", intval($rr['uid']));
// send number of unseen items to the device (the number will be displayed on Start screen until
// App will be started by user) - this update will be sent every 10 minutes to update the number to 0 if
// user has loaded the timeline through app or website
$res_tile = send_tile_update($device_url, "", $count[0]['count'], "");
switch (trim($res_tile)) {
case "Received":
// ok, count has been pushed, let's save it in personal settings
PConfig::set($rr['uid'], 'windowsphonepush', 'counterunseen', $count[0]['count']);
break;
case "QueueFull":
// maximum of 30 messages reached, server rejects any further push notification until device reconnects
Logger::log("INFO: Device-URL '" . $device_url . "' returns a QueueFull.");
break;
case "Suppressed":
// notification received and dropped as something in app was not enabled
Logger::log("WARN. Device-URL '" . $device_url . "' returns a Suppressed. Unexpected error in Mobile App?");
break;
case "Dropped":
// mostly combines with Expired, in that case Device-URL will be deleted from pconfig (function send_push)
break;
default:
// error, mostly called by "" which means that the url (not "" which has been checked)
// didn't not received Microsoft Notification Server -> wrong url
Logger::log("ERROR: specified Device-URL '" . $device_url . "' didn't produced any response.");
}
// additionally user receives the text of the newest item (function checks against last successfully pushed item)
if (intval($count[0]['max']) > intval($lastpushid)) {
// user can define if he wants to see the text of the item in the push notification
// this has been implemented as the device_url is not a https uri (not so secure)
$senditemtext = PConfig::get($rr['uid'], 'windowsphonepush', 'senditemtext');
if ($senditemtext == 1) {
// load item with the max id
$item = Item::selectFirst(['author-name', 'body'], ['id' => $count[0]['max']]);
// as user allows to send the item, we want to show the sender of the item in the toast
// toasts are limited to one line, therefore place is limited - author shall be in
// max. 15 chars (incl. dots); author is displayed in bold font
$author = $item['author-name'];
$author = ((strlen($author) > 12) ? substr($author, 0, 12) . "..." : $author);
// normally we show the body of the item, however if it is an url or an image we cannot
// show this in the toast (only test), therefore changing to an alternate text
// Otherwise BBcode-Tags will be eliminated and plain text cutted to 140 chars (incl. dots)
// BTW: information only possible in English
$body = $item['body'];
if (substr($body, 0, 4) == "[url") {
$body = "URL/Image ...";
} else {
$body = BBCode::convert($body, false, 2, true);
$body = HTML::toPlaintext($body, 0);
$body = ((strlen($body) > 137) ? substr($body, 0, 137) . "..." : $body);
}
} else {
// if user wishes higher privacy, we only display "Friendica - New timeline entry arrived"
$author = "Friendica";
$body = "New timeline entry arrived ...";
}
// only if toast push notification returns the Notification status "Received" we will update th settings with the
// new indicator max-id is checked against (QueueFull, Suppressed, N/A, Dropped shall qualify to resend
// the push notification some minutes later (BTW: if resulting in Expired for subscription status the
// device_url will be deleted (no further try on this url, see send_push)
// further log information done on count pushing with send_tile (see above)
$res_toast = send_toast($device_url, $author, $body);
if (trim($res_toast) === 'Received') {
PConfig::set($rr['uid'], 'windowsphonepush', 'lastpushid', $count[0]['max']);
}
}
}
}
}
}
/* Tile push notification change the number in the icon of the App in Start Screen of
* a Windows Phone Device, Image could be changed, not used for App "Friendica Mobile"
*/
function send_tile_update($device_url, $image_url, $count, $title, $priority = 1)
{
$msg = "<?xml version=\"1.0\" encoding=\"utf-8\"?>" .
"<wp:Notification xmlns:wp=\"WPNotification\">" .
"<wp:Tile>" .
"<wp:BackgroundImage>" . $image_url . "</wp:BackgroundImage>" .
"<wp:Count>" . $count . "</wp:Count>" .
"<wp:Title>" . $title . "</wp:Title>" .
"</wp:Tile> " .
"</wp:Notification>";
$result = send_push($device_url, [
'X-WindowsPhone-Target: token',
'X-NotificationClass: ' . $priority,
], $msg);
return $result;
}
/* Toast push notification send information to the top of the display
* if the user is not currently using the Friendica Mobile App, however
* there is only one line for displaying the information
*/
function send_toast($device_url, $title, $message, $priority = 2)
{
$msg = "<?xml version=\"1.0\" encoding=\"utf-8\"?>" .
"<wp:Notification xmlns:wp=\"WPNotification\">" .
"<wp:Toast>" .
"<wp:Text1>" . $title . "</wp:Text1>" .
"<wp:Text2>" . $message . "</wp:Text2>" .
"<wp:Param></wp:Param>" .
"</wp:Toast>" .
"</wp:Notification>";
$result = send_push($device_url, [
'X-WindowsPhone-Target: toast',
'X-NotificationClass: ' . $priority,
], $msg);
return $result;
}
// General function to send the push notification via cURL
function send_push($device_url, $headers, $msg)
{
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $device_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers + [
'Content-Type: text/xml',
'charset=utf-8',
'Accept: application/*',
]
);
curl_setopt($ch, CURLOPT_POSTFIELDS, $msg);
$output = curl_exec($ch);
curl_close($ch);
// if we received "Expired" from Microsoft server we will delete the obsolete device-URL
// and log this fact
$subscriptionStatus = get_header_value($output, 'X-SubscriptionStatus');
if ($subscriptionStatus == "Expired") {
PConfig::set(local_user(), 'windowsphonepush', 'device_url', "");
Logger::log("ERROR: the stored Device-URL " . $device_url . "returned an 'Expired' error, it has been deleted now.");
}
// the notification status shall be returned to windowsphonepush_cron (will
// update settings if 'Received' otherwise keep old value in settings (on QueuedFull. Suppressed, N/A, Dropped)
$notificationStatus = get_header_value($output, 'X-NotificationStatus');
return $notificationStatus;
}
// helper function to receive statuses from webresponse of Microsoft server
function get_header_value($content, $header)
{
return preg_match_all("/$header: (.*)/i", $content, $match) ? $match[1][0] : "";
}
/* reading information from url and deciding which function to start
* show_settings = delivering settings to check
* update_settings = set the device_url
* update_counterunseen = set counter for unseen elements to zero
*/
function windowsphonepush_content(App $a)
{
// Login with the specified Network credentials (like in api.php)
windowsphonepush_login($a);
$path = $a->argv[0];
$path2 = $a->argv[1];
if ($path == "windowsphonepush") {
switch ($path2) {
case "show_settings":
windowsphonepush_showsettings($a);
killme();
break;
case "update_settings":
$ret = windowsphonepush_updatesettings($a);
header("Content-Type: application/json; charset=utf-8");
echo json_encode(['status' => $ret]);
killme();
break;
case "update_counterunseen":
$ret = windowsphonepush_updatecounterunseen();
header("Content-Type: application/json; charset=utf-8");
echo json_encode(['status' => $ret]);
killme();
break;
default:
echo "Fehler";
}
}
}
// return settings for windowsphonepush addon to be able to check them in WP app
function windowsphonepush_showsettings()
{
if (!local_user()) {
return;
}
$enable = PConfig::get(local_user(), 'windowsphonepush', 'enable');
$device_url = PConfig::get(local_user(), 'windowsphonepush', 'device_url');
$senditemtext = PConfig::get(local_user(), 'windowsphonepush', 'senditemtext');
$lastpushid = PConfig::get(local_user(), 'windowsphonepush', 'lastpushid');
$counterunseen = PConfig::get(local_user(), 'windowsphonepush', 'counterunseen');
$addonversion = "2.0";
if (!$device_url) {
$device_url = "";
}
if (!$lastpushid) {
$lastpushid = 0;
}
header("Content-Type: application/json");
echo json_encode(['uid' => local_user(),
'enable' => $enable,
'device_url' => $device_url,
'senditemtext' => $senditemtext,
'lastpushid' => $lastpushid,
'counterunseen' => $counterunseen,
'addonversion' => $addonversion]);
}
/* update_settings is used to transfer the device_url from WP device to the Friendica server
* return the status of the operation to the server
*/
function windowsphonepush_updatesettings()
{
if (!local_user()) {
return "Not Authenticated";
}
// no updating if user hasn't enabled the addon
$enable = PConfig::get(local_user(), 'windowsphonepush', 'enable');
if (!$enable) {
return "Plug-in not enabled";
}
// check if sent url is empty - don't save and send return code to app
$device_url = $_POST['deviceurl'];
if ($device_url == "") {
Logger::log("ERROR: no valid Device-URL specified - client transferred '" . $device_url . "'");
return "No valid Device-URL specified";
}
// check if sent url is already stored in database for another user, we assume that there was a change of
// the user on the Windows Phone device and that device url is no longer true for the other user, so we
// et the device_url for the OTHER user blank (should normally not occur as App should include User/server
// in url request to Microsoft Push Notification server)
$r = q("SELECT * FROM `pconfig` WHERE `uid` <> " . local_user() . " AND
`cat` = 'windowsphonepush' AND
`k` = 'device_url' AND
`v` = '" . $device_url . "'");
if (count($r)) {
foreach ($r as $rr) {
PConfig::set($rr['uid'], 'windowsphonepush', 'device_url', '');
Logger::log("WARN: the sent URL was already registered with user '" . $rr['uid'] . "'. Deleted for this user as we expect to be correct now for user '" . local_user() . "'.");
}
}
PConfig::set(local_user(), 'windowsphonepush', 'device_url', $device_url);
// output the successfull update of the device URL to the logger for error analysis if necessary
Logger::log("INFO: Device-URL for user '" . local_user() . "' has been updated with '" . $device_url . "'");
return "Device-URL updated successfully!";
}
// update_counterunseen is used to reset the counter to zero from Windows Phone app
function windowsphonepush_updatecounterunseen()
{
if (!local_user()) {
return "Not Authenticated";
}
// no updating if user hasn't enabled the addon
$enable = PConfig::get(local_user(), 'windowsphonepush', 'enable');
if (!$enable) {
return "Plug-in not enabled";
}
PConfig::set(local_user(), 'windowsphonepush', 'counterunseen', 0);
return "Counter set to zero";
}
/* helper function to login to the server with the specified Network credentials
* (mainly copied from api.php)
*/
function windowsphonepush_login(App $a)
{
if (!isset($_SERVER['PHP_AUTH_USER'])) {
Logger::log('API_login: ' . print_r($_SERVER, true), Logger::DEBUG);
header('WWW-Authenticate: Basic realm="Friendica"');
header('HTTP/1.0 401 Unauthorized');
die('This api requires login');
}
$user_id = User::authenticate($_SERVER['PHP_AUTH_USER'], trim($_SERVER['PHP_AUTH_PW']));
if ($user_id) {
$record = DBA::selectFirst('user', [], ['uid' => $user_id]);
} else {
Logger::log('API_login failure: ' . print_r($_SERVER, true), Logger::DEBUG);
header('WWW-Authenticate: Basic realm="Friendica"');
header('HTTP/1.0 401 Unauthorized');
die('This api requires login');
}
Authentication::setAuthenticatedSessionForUser($record);
$_SESSION["allow_api"] = true;
Addon::callHooks('logged_in', $a->user);
}