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friendica-addons/fbpost/fbpost.php

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<?php
/**
* Name: Facebook Post Connector
* Version: 1.3
* Author: Mike Macgirvin <http://macgirvin.com/profile/mike>
* Author: Tobias Hößl <https://github.com/CatoTH/>
*
*/
/**
* Installing the Friendica/Facebook connector
*
* Detailed instructions how to use this plugin can be found at
* https://github.com/friendica/friendica/wiki/How-to:-Friendica%E2%80%99s-Facebook-connector
*
* Vidoes and embeds will not be posted if there is no other content. Links
* and images will be converted to a format suitable for the Facebook API and
* long posts truncated - with a link to view the full post.
*
* Facebook contacts will not be able to view private photos, as they are not able to
* authenticate to your site to establish identity. We will address this
* in a future release.
*/
define('FACEBOOK_DEFAULT_POLL_INTERVAL', 5); // given in minutes
require_once('include/security.php');
function fbpost_install() {
register_hook('post_local', 'addon/fbpost/fbpost.php', 'fbpost_post_local');
register_hook('notifier_normal', 'addon/fbpost/fbpost.php', 'fbpost_post_hook');
register_hook('jot_networks', 'addon/fbpost/fbpost.php', 'fbpost_jot_nets');
register_hook('connector_settings', 'addon/fbpost/fbpost.php', 'fbpost_plugin_settings');
register_hook('enotify', 'addon/fbpost/fbpost.php', 'fbpost_enotify');
register_hook('queue_predeliver', 'addon/fbpost/fbpost.php', 'fbpost_queue_hook');
register_hook('cron', 'addon/fbpost/fbpost.php', 'fbpost_cron');
}
function fbpost_uninstall() {
unregister_hook('post_local', 'addon/fbpost/fbpost.php', 'fbpost_post_local');
unregister_hook('notifier_normal', 'addon/fbpost/fbpost.php', 'fbpost_post_hook');
unregister_hook('jot_networks', 'addon/fbpost/fbpost.php', 'fbpost_jot_nets');
unregister_hook('connector_settings', 'addon/fbpost/fbpost.php', 'fbpost_plugin_settings');
unregister_hook('enotify', 'addon/fbpost/fbpost.php', 'fbpost_enotify');
unregister_hook('queue_predeliver', 'addon/fbpost/fbpost.php', 'fbpost_queue_hook');
unregister_hook('cron', 'addon/fbpost/fbpost.php', 'fbpost_cron');
}
/* declare the fbpost_module function so that /fbpost url requests will land here */
function fbpost_module() {}
// If a->argv[1] is a nickname, this is a callback from Facebook oauth requests.
// If $_REQUEST["realtime_cb"] is set, this is a callback from the Real-Time Updates API
/**
* @param App $a
*/
function fbpost_init(&$a) {
if($a->argc != 2)
return;
$nick = $a->argv[1];
if(strlen($nick))
$r = q("SELECT `uid` FROM `user` WHERE `nickname` = '%s' LIMIT 1",
dbesc($nick)
);
if(!(isset($r) && count($r)))
return;
$uid = $r[0]['uid'];
$auth_code = (x($_GET, 'code') ? $_GET['code'] : '');
$error = (x($_GET, 'error_description') ? $_GET['error_description'] : '');
if($error)
logger('fbpost_init: Error: ' . $error);
if($auth_code && $uid) {
$appid = get_config('facebook','appid');
$appsecret = get_config('facebook', 'appsecret');
$x = fetch_url('https://graph.facebook.com/oauth/access_token?client_id='
. $appid . '&client_secret=' . $appsecret . '&redirect_uri='
. urlencode($a->get_baseurl() . '/fbpost/' . $nick)
. '&code=' . $auth_code);
logger('fbpost_init: returned access token: ' . $x, LOGGER_DATA);
if(strpos($x,'access_token=') !== false) {
$token = str_replace('access_token=', '', $x);
if(strpos($token,'&') !== false)
$token = substr($token,0,strpos($token,'&'));
set_pconfig($uid,'facebook','access_token',$token);
set_pconfig($uid,'facebook','post','1');
fbpost_get_self($uid);
}
}
}
/**
* @param int $uid
*/
function fbpost_get_self($uid) {
$access_token = get_pconfig($uid,'facebook','access_token');
if(! $access_token)
return;
$s = fetch_url('https://graph.facebook.com/me/?access_token=' . $access_token);
if($s) {
$j = json_decode($s);
set_pconfig($uid,'facebook','self_id',(string) $j->id);
}
}
// This is the POST method to the facebook settings page
// Content is posted to Facebook in the function facebook_post_hook()
/**
* @param App $a
*/
function fbpost_post(&$a) {
$uid = local_user();
if($uid){
$fb_limited = get_config('facebook','crestrict');
$value = ((x($_POST,'post_by_default')) ? intval($_POST['post_by_default']) : 0);
set_pconfig($uid,'facebook','post_by_default', $value);
$value = ((x($_POST,'mirror_posts')) ? intval($_POST['mirror_posts']) : 0);
set_pconfig($uid,'facebook','mirror_posts', $value);
$value = ((x($_POST,'suppress_view_on_friendica')) ? intval($_POST['suppress_view_on_friendica']) : 0);
set_pconfig($uid,'facebook','suppress_view_on_friendica', $value);
$value = ((x($_POST,'post_to_page')) ? $_POST['post_to_page'] : "0-0");
$values = explode("-", $value);
set_pconfig($uid,'facebook','post_to_page', $values[0]);
set_pconfig($uid,'facebook','page_access_token', $values[1]);
info( t('Settings updated.') . EOL);
}
return;
}
// Facebook settings form
/**
* @param App $a
* @return string
*/
function fbpost_content(&$a) {
if(! local_user()) {
notice( t('Permission denied.') . EOL);
return '';
}
if(! service_class_allows(local_user(),'facebook_connect')) {
notice( t('Permission denied.') . EOL);
return upgrade_bool_message();
}
if($a->argc > 1 && $a->argv[1] === 'remove') {
del_pconfig(local_user(),'facebook','post');
info( t('Facebook Post disabled') . EOL);
}
$o = '';
$fb_installed = false;
if (get_pconfig(local_user(),'facebook','post')) {
$access_token = get_pconfig(local_user(),'facebook','access_token');
if ($access_token) {
$s = fetch_url('https://graph.facebook.com/me/feed?access_token=' . $access_token);
if($s) {
$j = json_decode($s);
if (isset($j->data)) $fb_installed = true;
}
}
}
$appid = get_config('facebook','appid');
if(! $appid) {
notice( t('Facebook API key is missing.') . EOL);
return '';
}
$a->page['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="'
. $a->get_baseurl() . '/addon/fbpost/fbpost.css' . '" media="all" />' . "\r\n";
$o .= '<h3>' . t('Facebook Post') . '</h3>';
if(! $fb_installed) {
$o .= '<div id="fbpost-enable-wrapper">';
//read_stream,publish_stream,manage_pages,photo_upload,user_groups,offline_access
$o .= '<a href="https://www.facebook.com/dialog/oauth?client_id=' . $appid . '&redirect_uri='
. $a->get_baseurl() . '/fbpost/' . $a->user['nickname'] . '&scope=export_stream,read_stream,publish_stream,manage_pages,photo_upload,user_groups,publish_actions,user_friends,create_note,share_item,video_upload,status_update">' . t('Install Facebook Post connector for this account.') . '</a>';
$o .= '</div>';
}
if($fb_installed) {
$o .= '<div id="fbpost-disable-wrapper">';
$o .= '<a href="' . $a->get_baseurl() . '/fbpost/remove' . '">' . t('Remove Facebook Post connector') . '</a></div>';
$o .= '<div id="fbpost-enable-wrapper">';
$o .= '<a href="https://www.facebook.com/dialog/oauth?client_id=' . $appid . '&redirect_uri='
. $a->get_baseurl() . '/fbpost/' . $a->user['nickname'] . '&scope=export_stream,read_stream,publish_stream,manage_pages,photo_upload,user_groups,publish_actions,user_friends,create_note,share_item,video_upload,status_update">' . t('Re-authenticate [This is necessary whenever your Facebook password is changed.]') . '</a>';
$o .= '</div>';
$o .= '<div id="fbpost-post-default-form">';
$o .= '<form action="fbpost" method="post" >';
$post_by_default = get_pconfig(local_user(),'facebook','post_by_default');
$checked = (($post_by_default) ? ' checked="checked" ' : '');
$o .= '<input type="checkbox" name="post_by_default" value="1"' . $checked . '/>' . ' ' . t('Post to Facebook by default') . EOL;
$suppress_view_on_friendica = get_pconfig(local_user(),'facebook','suppress_view_on_friendica');
$checked = (($suppress_view_on_friendica) ? ' checked="checked" ' : '');
$o .= '<input type="checkbox" name="suppress_view_on_friendica" value="1"' . $checked . '/>' . ' ' . t('Suppress "View on friendica"') . EOL;
$mirror_posts = get_pconfig(local_user(),'facebook','mirror_posts');
$checked = (($mirror_posts) ? ' checked="checked" ' : '');
$o .= '<input type="checkbox" name="mirror_posts" value="1"' . $checked . '/>' . ' ' . t('Mirror wall posts from facebook to friendica.') . EOL;
// List all pages
$post_to_page = get_pconfig(local_user(),'facebook','post_to_page');
$page_access_token = get_pconfig(local_user(),'facebook','page_access_token');
$fb_token = get_pconfig($a->user['uid'],'facebook','access_token');
$url = 'https://graph.facebook.com/me/accounts';
$x = fetch_url($url."?access_token=".$fb_token);
$accounts = json_decode($x);
$o .= t("Post to page/group:")."<select name='post_to_page'>";
if (intval($post_to_page) == 0)
$o .= "<option value='0-0' selected>".t('None')."</option>";
else
$o .= "<option value='0-0'>".t('None')."</option>";
foreach($accounts->data as $account) {
if (is_array($account->perms))
if ($post_to_page == $account->id)
$o .= "<option value='".$account->id."-".$account->access_token."' selected>".$account->name."</option>";
else
$o .= "<option value='".$account->id."-".$account->access_token."'>".$account->name."</option>";
}
$url = 'https://graph.facebook.com/me/groups';
$x = fetch_url($url."?access_token=".$fb_token);
$groups = json_decode($x);
foreach($groups->data as $group) {
if ($post_to_page == $group->id)
$o .= "<option value='".$group->id."-0' selected>".$group->name."</option>";
else
$o .= "<option value='".$group->id."-0'>".$group->name."</option>";
}
$o .= "</select>";
$o .= '<p><input type="submit" name="submit" value="' . t('Save Settings') . '" /></form></div>';
}
return $o;
}
/**
* @param App $a
* @param null|object $b
*/
function fbpost_plugin_settings(&$a,&$b) {
$b .= '<div class="settings-block">';
//$b .= '<h3>' . t('Facebook Post Settings') . '</h3>';
$b .= '<a href="fbpost"><h3>' . t('Facebook Post Settings') . '</a></h3>';
$b .= '</div>';
}
/**
* @param App $a
* @param null|object $o
*/
function fbpost_plugin_admin(&$a, &$o){
$o = '<input type="hidden" name="form_security_token" value="' . get_form_security_token("fbsave") . '">';
$o .= '<h4>' . t('Facebook API Key') . '</h4>';
$appid = get_config('facebook', 'appid' );
$appsecret = get_config('facebook', 'appsecret' );
$ret1 = q("SELECT `v` FROM `config` WHERE `cat` = 'facebook' AND `k` = 'appid' LIMIT 1");
$ret2 = q("SELECT `v` FROM `config` WHERE `cat` = 'facebook' AND `k` = 'appsecret' LIMIT 1");
if ((count($ret1) > 0 && $ret1[0]['v'] != $appid) || (count($ret2) > 0 && $ret2[0]['v'] != $appsecret)) $o .= t('Error: it appears that you have specified the App-ID and -Secret in your .htconfig.php file. As long as they are specified there, they cannot be set using this form.<br><br>');
$o .= '<label for="fb_appid">' . t('App-ID / API-Key') . '</label><input id="fb_appid" name="appid" type="text" value="' . escape_tags($appid ? $appid : "") . '"><br style="clear: both;">';
$o .= '<label for="fb_appsecret">' . t('Application secret') . '</label><input id="fb_appsecret" name="appsecret" type="text" value="' . escape_tags($appsecret ? $appsecret : "") . '"><br style="clear: both;">';
$o .= '<input type="submit" name="fb_save_keys" value="' . t('Save') . '">';
}
/**
* @param App $a
*/
function fbpost_plugin_admin_post(&$a){
check_form_security_token_redirectOnErr('/admin/plugins/fbpost', 'fbsave');
if (x($_REQUEST,'fb_save_keys')) {
set_config('facebook', 'appid', $_REQUEST['appid']);
set_config('facebook', 'appsecret', $_REQUEST['appsecret']);
info(t('The new values have been saved.'));
}
}
/**
* @param App $a
* @param object $b
* @return mixed
*/
function fbpost_jot_nets(&$a,&$b) {
if(! local_user())
return;
$fb_post = get_pconfig(local_user(),'facebook','post');
if(intval($fb_post) == 1) {
$fb_defpost = get_pconfig(local_user(),'facebook','post_by_default');
$selected = ((intval($fb_defpost) == 1) ? ' checked="checked" ' : '');
$b .= '<div class="profile-jot-net"><input type="checkbox" name="facebook_enable"' . $selected . ' value="1" /> '
. t('Post to Facebook') . '</div>';
}
}
function fbpost_createmsg($b) {
require_once("include/bbcode.php");
require_once("include/html2plain.php");
// Looking for the first image
$image = '';
if(preg_match("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/is",$b['body'],$matches))
$image = $matches[3];
if ($image == '')
if(preg_match("/\[img\](.*?)\[\/img\]/is",$b['body'],$matches))
$image = $matches[1];
$multipleimages = (strpos($b['body'], "[img") != strrpos($b['body'], "[img"));
// When saved into the database the content is sent through htmlspecialchars
// That means that we have to decode all image-urls
$image = htmlspecialchars_decode($image);
$body = $b["body"];
if ($b["title"] != "")
$body = $b["title"]."\n\n".$body;
if (strpos($body, "[bookmark") !== false) {
// splitting the text in two parts:
// before and after the bookmark
$pos = strpos($body, "[bookmark");
$body1 = substr($body, 0, $pos);
$body2 = substr($body, $pos);
// Removing all quotes after the bookmark
// they are mostly only the content after the bookmark.
$body2 = preg_replace("/\[quote\=([^\]]*)\](.*?)\[\/quote\]/ism",'',$body2);
$body2 = preg_replace("/\[quote\](.*?)\[\/quote\]/ism",'',$body2);
$pos2 = strpos($body2, "[/bookmark]");
if ($pos2)
$body2 = substr($body2, $pos2 + 11);
$body = $body1.$body2;
}
// Add some newlines so that the message could be cut better
$body = str_replace(array("[quote", "[bookmark", "[/bookmark]", "[/quote]"),
array("\n[quote", "\n[bookmark", "[/bookmark]\n", "[/quote]\n"), $body);
// remove the recycle signs and the names since they aren't helpful on twitter
// $recycle = html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8');
// $body = preg_replace( '/'.$recycle.'\[url\=(\w+.*?)\](\w+.*?)\[\/url\]/i', "\n", $body);
// At first convert the text to html
$html = bbcode($body, false, false, 2);
// Then convert it to plain text
//$msg = trim($b['title']." \n\n".html2plain($html, 0, true));
$msg = trim(html2plain($html, 0, true));
$msg = html_entity_decode($msg,ENT_QUOTES,'UTF-8');
// Removing multiple newlines
while (strpos($msg, "\n\n\n") !== false)
$msg = str_replace("\n\n\n", "\n\n", $msg);
// Removing multiple spaces
while (strpos($msg, " ") !== false)
$msg = str_replace(" ", " ", $msg);
// Removing URLs
$msg = preg_replace('/(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/i', "", $msg);
$msg = trim($msg);
$link = '';
$linkname = '';
// look for bookmark-bbcode and handle it with priority
if(preg_match("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/is",$b['body'],$matches)) {
$link = $matches[1];
$linkname = $matches[2];
}
$multiplelinks = (strpos($b['body'], "[bookmark") != strrpos($b['body'], "[bookmark"));
if ($multiplelinks)
$linkname = '';
// If there is no bookmark element then take the first link
if ($link == '') {
$links = collecturls($html);
if (sizeof($links) > 0) {
reset($links);
$link = current($links);
}
$multiplelinks = (sizeof($links) > 1);
}
$msglink = "";
if ($multiplelinks)
$msglink = $b["plink"];
else if ($link != "")
$msglink = $link;
else if ($multipleimages)
$msglink = $b["plink"];
else if ($image != "")
$msglink = $image;
// Removing multiple spaces - again
while (strpos($msg, " ") !== false)
$msg = str_replace(" ", " ", $msg);
if ($msglink != "") {
// Looking if the link points to an image
$img_str = fetch_url($msglink);
$tempfile = tempnam(get_config("system","temppath"), "cache");
file_put_contents($tempfile, $img_str);
$mime = image_type_to_mime_type(exif_imagetype($tempfile));
unlink($tempfile);
} else
$mime = "";
if (($image == $msglink) OR (substr($mime, 0, 6) == "image/"))
return(array("msg"=>trim($msg), "link"=>"", "linkname"=>$linkname, "image"=>$msglink));
else
return(array("msg"=>trim($msg), "link"=>$msglink, "linkname"=>$linkname,"image"=>$image));
}
/**
* @param App $a
* @param object $b
* @return mixed
*/
function fbpost_post_hook(&$a,&$b) {
logger('fbpost_post_hook: Facebook post invoked', LOGGER_DEBUG);
if($b['deleted'] || ($b['created'] !== $b['edited']))
return;
logger('fbpost_post_hook: Facebook post first check successful', LOGGER_DEBUG);
// if post comes from facebook don't send it back
if(($b['app'] == "Facebook") AND ($b['verb'] != ACTIVITY_LIKE))
return;
logger('fbpost_post_hook: Facebook post accepted', LOGGER_DEBUG);
/**
* Post to Facebook stream
*/
require_once('include/group.php');
require_once('include/html2plain.php');
$reply = false;
$likes = false;
$deny_arr = array();
$allow_arr = array();
$toplevel = (($b['id'] == $b['parent']) ? true : false);
$linking = ((get_pconfig($b['uid'],'facebook','no_linking')) ? 0 : 1);
if((!$toplevel) && ($linking)) {
$r = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
intval($b['parent']),
intval($b['uid'])
);
//$r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
// dbesc($b['parent-uri']),
// intval($b['uid'])
//);
// is it a reply to a facebook post?
// A reply to a toplevel post is only allowed for "real" facebook posts
if(count($r) && substr($r[0]['uri'],0,4) === 'fb::')
$reply = substr($r[0]['uri'],4);
elseif(count($r) && (substr($r[0]['extid'],0,4) === 'fb::') AND ($r[0]['id'] != $r[0]['parent']))
$reply = substr($r[0]['extid'],4);
else
return;
$u = q("SELECT * FROM user where uid = %d limit 1",
intval($b['uid'])
);
if(! count($u))
return;
// only accept comments from the item owner. Other contacts are unknown to FB.
if(! link_compare($b['author-link'], $a->get_baseurl() . '/profile/' . $u[0]['nickname']))
return;
logger('fbpost_post_hook: facebook reply id=' . $reply);
}
if(strstr($b['postopts'],'facebook') || ($b['private']) || ($reply)) {
if($b['private'] && $reply === false) {
$allow_people = expand_acl($b['allow_cid']);
$allow_groups = expand_groups(expand_acl($b['allow_gid']));
$deny_people = expand_acl($b['deny_cid']);
$deny_groups = expand_groups(expand_acl($b['deny_gid']));
$recipients = array_unique(array_merge($allow_people,$allow_groups));
$deny = array_unique(array_merge($deny_people,$deny_groups));
$allow_str = dbesc(implode(', ',$recipients));
if($allow_str) {
$r = q("SELECT `notify` FROM `contact` WHERE `id` IN ( $allow_str ) AND `network` = 'face'");
if(count($r))
foreach($r as $rr)
$allow_arr[] = $rr['notify'];
}
$deny_str = dbesc(implode(', ',$deny));
if($deny_str) {
$r = q("SELECT `notify` FROM `contact` WHERE `id` IN ( $deny_str ) AND `network` = 'face'");
if(count($r))
foreach($r as $rr)
$deny_arr[] = $rr['notify'];
}
if(count($deny_arr) && (! count($allow_arr))) {
// One or more FB folks were denied access but nobody on FB was specifically allowed access.
// This might cause the post to be open to public on Facebook, but only to selected members
// on another network. Since this could potentially leak a post to somebody who was denied,
// we will skip posting it to Facebook with a slightly vague but relevant message that will
// hopefully lead somebody to this code comment for a better explanation of what went wrong.
notice( t('Post to Facebook cancelled because of multi-network access permission conflict.') . EOL);
return;
}
// if it's a private message but no Facebook members are allowed or denied, skip Facebook post
if((! count($allow_arr)) && (! count($deny_arr)))
return;
}
if($b['verb'] == ACTIVITY_LIKE) {
$likes = true;
logger('fbpost_post_hook: liking '.print_r($b, true), LOGGER_DEBUG);
}
$appid = get_config('facebook', 'appid' );
$secret = get_config('facebook', 'appsecret' );
if($appid && $secret) {
logger('fbpost_post_hook: have appid+secret');
$fb_token = get_pconfig($b['uid'],'facebook','access_token');
// post to facebook if it's a public post and we've ticked the 'post to Facebook' box,
// or it's a private message with facebook participants
// or it's a reply or likes action to an existing facebook post
if($fb_token && ($toplevel || $b['private'] || $reply)) {
logger('fbpost_post_hook: able to post');
require_once('library/facebook.php');
require_once('include/bbcode.php');
$msg = $b['body'];
logger('fbpost_post_hook: original msg=' . $msg, LOGGER_DATA);
$msgarr = fbpost_createmsg($b);
$msg = $msgarr["msg"];
$link = $msgarr["link"];
$image = $msgarr["image"];
$linkname = $msgarr["linkname"];
// Fallback - if message is empty
if(!strlen($msg))
$msg = $linkname;
if(!strlen($msg))
$msg = $link;
if(!strlen($msg))
$msg = $image;
// If there is nothing to post then exit
if(!strlen($msg))
return;
logger('fbpost_post_hook: msg=' . $msg, LOGGER_DATA);
$video = "";
if($likes) {
$postvars = array('access_token' => $fb_token);
} else {
// message, picture, link, name, caption, description, source, place, tags
//if(trim($link) != "")
// if (@exif_imagetype($link) != 0) {
// $image = $link;
// $link = "";
// }
$postvars = array(
'access_token' => $fb_token,
'message' => $msg
);
if(trim($image) != "")
$postvars['picture'] = $image;
if(trim($link) != "") {
$postvars['link'] = $link;
if ((stristr($link,'youtube')) || (stristr($link,'youtu.be')) || (stristr($link,'vimeo'))) {
$video = $link;
}
}
if(trim($linkname) != "")
$postvars['name'] = $linkname;
}
if(($b['private']) && ($toplevel)) {
$postvars['privacy'] = '{"value": "CUSTOM", "friends": "SOME_FRIENDS"';
if(count($allow_arr))
$postvars['privacy'] .= ',"allow": "' . implode(',',$allow_arr) . '"';
if(count($deny_arr))
$postvars['privacy'] .= ',"deny": "' . implode(',',$deny_arr) . '"';
$postvars['privacy'] .= '}';
}
$post_to_page = get_pconfig($b['uid'],'facebook','post_to_page');
$page_access_token = get_pconfig($b['uid'],'facebook','page_access_token');
if ((intval($post_to_page) != 0) and ($page_access_token != ""))
$target = $post_to_page;
else
$target = "me";
if($reply) {
$url = 'https://graph.facebook.com/' . $reply . '/' . (($likes) ? 'likes' : 'comments');
} else if (($video != "") or (($image == "") and ($link != ""))) {
// If it is a link to a video or a link without a preview picture then post it as a link
if ($video != "")
$link = $video;
$postvars = array(
'access_token' => $fb_token,
'link' => $link,
);
if ($msg != $video)
$postvars['message'] = $msg;
$url = 'https://graph.facebook.com/'.$target.'/links';
} else if (($link == "") and ($image != "")) {
// If it is only an image without a page link then post this image as a photo
$postvars = array(
'access_token' => $fb_token,
'url' => $image,
);
if ($msg != $image)
$postvars['message'] = $msg;
$url = 'https://graph.facebook.com/'.$target.'/photos';
} else if (($link != "") or ($image != "") or ($b['title'] == '') or (strlen($msg) < 500)) {
$url = 'https://graph.facebook.com/'.$target.'/feed';
if (!get_pconfig($b['uid'],'facebook','suppress_view_on_friendica') and $b['plink'])
$postvars['actions'] = '{"name": "' . t('View on Friendica') . '", "link": "' . $b['plink'] . '"}';
} else {
// if its only a message and a subject and the message is larger than 500 characters then post it as note
$postvars = array(
'access_token' => $fb_token,
'message' => bbcode($b['body'], false, false),
'subject' => $b['title'],
);
$url = 'https://graph.facebook.com/'.$target.'/notes';
}
// Post to page?
if (!$reply and ($target != "me") and $page_access_token)
$postvars['access_token'] = $page_access_token;
logger('fbpost_post_hook: post to ' . $url);
logger('fbpost_post_hook: postvars: ' . print_r($postvars,true));
// "test_mode" prevents anything from actually being posted.
// Otherwise, let's do it.
if(!get_config('facebook','test_mode')) {
$x = post_url($url, $postvars);
logger('fbpost_post_hook: post returns: ' . $x, LOGGER_DEBUG);
$retj = json_decode($x);
if($retj->id) {
// Only set the extid when it isn't the toplevel post
q("UPDATE `item` SET `extid` = '%s' WHERE `id` = %d AND `parent` != %d",
dbesc('fb::' . $retj->id),
intval($b['id']),
intval($b['id'])
);
} else {
// Sometimes posts are accepted from facebook although it telling an error
// This leads to endless comment flooding.
// If it is a special kind of failure the post was receiced
// Although facebook said it wasn't received ...
if (!$likes AND (($retj->error->type != "OAuthException") OR ($retj->error->code != 2))) {
$r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `self`", intval($b['uid']));
if (count($r))
$a->contact = $r[0]["id"];
$s = serialize(array('url' => $url, 'item' => $b['id'], 'post' => $postvars));
require_once('include/queue_fn.php');
add_to_queue($a->contact,NETWORK_FACEBOOK,$s);
logger('fbpost_post_hook: Post failed, requeued.', LOGGER_DEBUG);
notice( t('Facebook post failed. Queued for retry.') . EOL);
}
if (isset($retj->error) && $retj->error->type == "OAuthException" && $retj->error->code == 190) {
logger('fbpost_post_hook: Facebook session has expired due to changed password.', LOGGER_DEBUG);
$last_notification = get_pconfig($b['uid'], 'facebook', 'session_expired_mailsent');
if (!$last_notification || $last_notification < (time() - FACEBOOK_SESSION_ERR_NOTIFICATION_INTERVAL)) {
require_once('include/enotify.php');
$r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($b['uid']));
notification(array(
'uid' => $b['uid'],
'type' => NOTIFY_SYSTEM,
'system_type' => 'facebook_connection_invalid',
'language' => $r[0]['language'],
'to_name' => $r[0]['username'],
'to_email' => $r[0]['email'],
'source_name' => t('Administrator'),
'source_link' => $a->config["system"]["url"],
'source_photo' => $a->config["system"]["url"] . '/images/person-80.jpg',
));
set_pconfig($b['uid'], 'facebook', 'session_expired_mailsent', time());
} else logger('fbpost_post_hook: No notification, as the last one was sent on ' . $last_notification, LOGGER_DEBUG);
}
}
}
}
}
}
}
/**
* @param App $app
* @param object $data
*/
function fbpost_enotify(&$app, &$data) {
if (x($data, 'params') && $data['params']['type'] == NOTIFY_SYSTEM && x($data['params'], 'system_type') && $data['params']['system_type'] == 'facebook_connection_invalid') {
$data['itemlink'] = '/fbpost';
$data['epreamble'] = $data['preamble'] = t('Your Facebook connection became invalid. Please Re-authenticate.');
$data['subject'] = t('Facebook connection became invalid');
$data['body'] = sprintf( t("Hi %1\$s,\n\nThe connection between your accounts on %2\$s and Facebook became invalid. This usually happens after you change your Facebook-password. To enable the connection again, you have to %3\$sre-authenticate the Facebook-connector%4\$s."), $data['params']['to_name'], "[url=" . $app->config["system"]["url"] . "]" . $app->config["sitename"] . "[/url]", "[url=" . $app->config["system"]["url"] . "/fbpost]", "[/url]");
}
}
/**
* @param App $a
* @param object $b
*/
function fbpost_post_local(&$a,&$b) {
// Figure out if Facebook posting is enabled for this post and file it in 'postopts'
// where we will discover it during background delivery.
// This can only be triggered by a local user posting to their own wall.
if((local_user()) && (local_user() == $b['uid'])) {
$fb_post = intval(get_pconfig(local_user(),'facebook','post'));
$fb_enable = (($fb_post && x($_REQUEST,'facebook_enable')) ? intval($_REQUEST['facebook_enable']) : 0);
// if API is used, default to the chosen settings
// but allow a specific override
if($_REQUEST['api_source'] && intval(get_pconfig(local_user(),'facebook','post_by_default'))) {
if(! x($_REQUEST,'facebook_enable'))
$fb_enable = 1;
}
if(! $fb_enable)
return;
if(strlen($b['postopts']))
$b['postopts'] .= ',';
$b['postopts'] .= 'facebook';
}
}
/**
* @param App $a
* @param object $b
*/
function fbpost_queue_hook(&$a,&$b) {
$qi = q("SELECT * FROM `queue` WHERE `network` = '%s'",
dbesc(NETWORK_FACEBOOK)
);
if(! count($qi))
return;
require_once('include/queue_fn.php');
foreach($qi as $x) {
if($x['network'] !== NETWORK_FACEBOOK)
continue;
logger('fbpost_queue_hook: run');
$r = q("SELECT `user`.* FROM `user` LEFT JOIN `contact` on `contact`.`uid` = `user`.`uid`
WHERE `contact`.`self` = 1 AND `contact`.`id` = %d LIMIT 1",
intval($x['cid'])
);
if(! count($r)) {
logger('fbpost_queue_hook: no user found for entry '.print_r($x, true));
update_queue_time($x['id']);
continue;
}
$user = $r[0];
$appid = get_config('facebook', 'appid' );
$secret = get_config('facebook', 'appsecret' );
if($appid && $secret) {
$fb_post = intval(get_pconfig($user['uid'],'facebook','post'));
$fb_token = get_pconfig($user['uid'],'facebook','access_token');
if($fb_post && $fb_token) {
logger('fbpost_queue_hook: able to post');
require_once('library/facebook.php');
$z = unserialize($x['content']);
$item = $z['item'];
$j = post_url($z['url'],$z['post']);
$retj = json_decode($j);
if($retj->id) {
// Only set the extid when it isn't the toplevel post
q("UPDATE `item` SET `extid` = '%s' WHERE `id` = %d AND `parent` != %d",
dbesc('fb::' . $retj->id),
intval($item),
intval($item)
);
logger('fbpost_queue_hook: success: ' . $j);
remove_queue_item($x['id']);
} else {
logger('fbpost_queue_hook: failed: ' . $j);
// If it is a special kind of failure the post was receiced
// Although facebook said it wasn't received ...
$ret = json_decode($j);
if (($ret->error->type != "OAuthException") OR ($ret->error->code != 2))
update_queue_time($x['id']);
else
logger('fbpost_queue_hook: Not requeued, since it seems to be received');
}
} else {
logger('fbpost_queue_hook: No fb_post or fb_token.');
update_queue_time($x['id']);
}
} else {
logger('fbpost_queue_hook: No appid or secret.');
update_queue_time($x['id']);
}
}
}
/**
* @return bool|string
*/
function fbpost_get_app_access_token() {
$acc_token = get_config('facebook','app_access_token');
if ($acc_token !== false) return $acc_token;
$appid = get_config('facebook','appid');
$appsecret = get_config('facebook', 'appsecret');
if ($appid === false || $appsecret === false) {
logger('fb_get_app_access_token: appid and/or appsecret not set', LOGGER_DEBUG);
return false;
}
logger('https://graph.facebook.com/oauth/access_token?client_id=' . $appid . '&client_secret=' . $appsecret . '&grant_type=client_credentials', LOGGER_DATA);
$x = fetch_url('https://graph.facebook.com/oauth/access_token?client_id=' . $appid . '&client_secret=' . $appsecret . '&grant_type=client_credentials');
if(strpos($x,'access_token=') !== false) {
logger('fb_get_app_access_token: returned access token: ' . $x, LOGGER_DATA);
$token = str_replace('access_token=', '', $x);
if(strpos($token,'&') !== false)
$token = substr($token,0,strpos($token,'&'));
if ($token == "") {
logger('fb_get_app_access_token: empty token: ' . $x, LOGGER_DEBUG);
return false;
}
set_config('facebook','app_access_token',$token);
return $token;
} else {
logger('fb_get_app_access_token: response did not contain an access_token: ' . $x, LOGGER_DATA);
return false;
}
}
function fbpost_cron($a,$b) {
$last = get_config('facebook','last_poll');
$poll_interval = intval(get_config('facebook','poll_interval'));
if(! $poll_interval)
$poll_interval = FACEBOOK_DEFAULT_POLL_INTERVAL;
if($last) {
$next = $last + ($poll_interval * 60);
if($next > time()) {
logger('facebook: poll intervall not reached');
return;
}
}
logger('facebook: cron_start');
$r = q("SELECT * FROM `pconfig` WHERE `cat` = 'facebook' AND `k` = 'mirror_posts' AND `v` = '1' ORDER BY RAND() ");
if(count($r)) {
foreach($r as $rr) {
logger('facebook: fetching for user '.$rr['uid']);
fbpost_fetchwall($a, $rr['uid']);
}
}
logger('facebook: cron_end');
set_config('facebook','last_poll', time());
}
function fbpost_fetchwall($a, $uid) {
require_once("include/oembed.php");
$access_token = get_pconfig($uid,'facebook','access_token');
$post_to_page = get_pconfig($uid,'facebook','post_to_page');
$lastcreated = get_pconfig($uid,'facebook','last_created');
if ((int)$post_to_page == 0)
$post_to_page = "me";
$url = "https://graph.facebook.com/".$post_to_page."/feed?access_token=".$access_token;
$first_time = ($lastcreated == "");
if ($lastcreated != "")
$url .= "&since=".urlencode($lastcreated);
$feed = fetch_url($url);
$data = json_decode($feed);
if (!is_array($data->data))
return;
$items = array_reverse($data->data);
foreach ($items as $item) {
if ($item->created_time > $lastcreated)
$lastcreated = $item->created_time;
if ($first_time)
continue;
if ($item->application->id == get_config('facebook','appid'))
continue;
if(isset($item->privacy) && ($item->privacy->value !== 'EVERYONE') && ($item->privacy->value !== ''))
continue;
if (($post_to_page != $item->from->id) AND ((int)$post_to_page != 0))
continue;
if (!strstr($item->id, $item->from->id."_") AND isset($item->to) AND ((int)$post_to_page == 0))
continue;
$_SESSION["authenticated"] = true;
$_SESSION["uid"] = $uid;
unset($_REQUEST);
$_REQUEST["type"] = "wall";
$_REQUEST["api_source"] = true;
$_REQUEST["profile_uid"] = $uid;
$_REQUEST["source"] = "Facebook";
$_REQUEST["title"] = "";
$_REQUEST["body"] = (isset($item->message) ? escape_tags($item->message) : '');
$content = "";
$type = "";
if(isset($item->name) and isset($item->link)) {
$oembed_data = oembed_fetch_url($item->link);
$type = $oembed_data->type;
$content = "[bookmark=".$item->link."]".$item->name."[/bookmark]";
} elseif (isset($item->name))
$content .= "[b]".$item->name."[/b]";
$quote = "";
if(isset($item->description) and ($item->type != "photo"))
$quote = $item->description;
if(isset($item->caption) and ($item->type == "photo"))
$quote = $item->caption;
// Only import the picture when the message is no video
// oembed display a picture of the video as well
//if ($item->type != "video") {
//if (($item->type != "video") and ($item->type != "photo")) {
if (($type == "") OR ($type == "link")) {
$type = $item->type;
if(isset($item->picture) && isset($item->link))
$content .= "\n".'[url='.$item->link.'][img]'.fpost_cleanpicture($item->picture).'[/img][/url]';
else {
if (isset($item->picture))
$content .= "\n".'[img]'.fpost_cleanpicture($item->picture).'[/img]';
// if just a link, it may be a wall photo - check
if(isset($item->link))
$content .= fbpost_get_photo($uid,$item->link);
}
}
if(trim($_REQUEST["body"].$content.$quote) == '') {
logger('facebook: empty body '.$item->id.' '.print_r($item, true));
continue;
}
if ($content)
$_REQUEST["body"] .= "\n\n";
if ($type)
$_REQUEST["body"] .= "[class=type-".$type."]";
if ($content)
$_REQUEST["body"] .= $content;
if ($quote)
$_REQUEST["body"] .= "\n[quote]".$quote."[/quote]";
if ($type)
$_REQUEST["body"] .= "[/class]";
$_REQUEST["body"] = trim($_REQUEST["body"]);
if (isset($item->place)) {
if ($item->place->name or $item->place->location->street or
$item->place->location->city or $item->place->location->country) {
$_REQUEST["location"] = '';
if ($item->place->name)
$_REQUEST["location"] .= $item->place->name;
if ($item->place->location->street)
$_REQUEST["location"] .= " ".$item->place->location->street;
if ($item->place->location->city)
$_REQUEST["location"] .= " ".$item->place->location->city;
if ($item->place->location->country)
$_REQUEST["location"] .= " ".$item->place->location->country;
$_REQUEST["location"] = trim($_REQUEST["location"]);
}
if ($item->place->location->latitude and $item->place->location->longitude)
$_REQUEST["coord"] = substr($item->place->location->latitude, 0, 8)
.' '.substr($item->place->location->longitude, 0, 8);
}
//print_r($_REQUEST);
logger('facebook: posting for user '.$uid);
require_once('mod/item.php');
item_post($a);
}
set_pconfig($uid,'facebook','last_created', $lastcreated);
}
function fbpost_get_photo($uid,$link) {
$access_token = get_pconfig($uid,'facebook','access_token');
if(! $access_token || (! stristr($link,'facebook.com/photo.php')))
return "";
$ret = preg_match('/fbid=([0-9]*)/',$link,$match);
if($ret)
$photo_id = $match[1];
else
return "";
$x = fetch_url('https://graph.facebook.com/'.$photo_id.'?access_token='.$access_token);
$j = json_decode($x);
if($j->picture)
return "\n\n".'[url='.$link.'][img]'.fpost_cleanpicture($j->picture).'[/img][/url]';
return "";
}
function fpost_cleanpicture($image) {
if (strpos($image, ".fbcdn.net/") and (substr($image, -6) == "_s.jpg"))
$image = substr($image, 0, -6)."_n.jpg";
$queryvar = fbpost_parse_query($image);
if ($queryvar['url'] != "")
$image = urldecode($queryvar['url']);
return $image;
}
function fbpost_parse_query($var) {
/**
* Use this function to parse out the query array element from
* the output of parse_url().
*/
$var = parse_url($var, PHP_URL_QUERY);
$var = html_entity_decode($var);
$var = explode('&', $var);
$arr = array();
foreach($var as $val) {
$x = explode('=', $val);
$arr[$x[0]] = $x[1];
}
unset($val, $x, $var);
return $arr;
}
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