Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
/**
* This module still needs a lot of work, but is functional today.
* Please review this section if you upgrade because things will change.
* If you have issues upgrading, remove facebook from the addon list,
* view a page on your site, then add it back to the list. This will reset
* all of the plugin 'hooks'.
*
* 1. register an API key for your site from developer.facebook.com
* a. We'd be very happy if you include "Friendika" in the application name
* to increase name recognition. The Friendika icons are also present
* in the images directory and may be uploaded as a Facebook app icon.
* Use images/ff-16.jpg for the Icon and images/ff-128.jpg for the Logo.
* b. The url should be your site URL with a trailing slash.
* You may use http://portal.friendika.com/privacy as the privacy policy
* URL unless your site has different requirements, and
* http://portal.friendika.com as the Terms of Service URL unless
* you have different requirements. (Friendika is a software application
* and does not require Terms of Service, though your installation of it might).
* c. Set the following values in your .htconfig.php file
* $a->config['facebook']['appid'] = 'xxxxxxxxxxx';
* $a->config['facebook']['appsecret'] = 'xxxxxxxxxxxxxxx';
* Replace with the settings Facebook gives you.
* 2. Enable the facebook plugin by including it in .htconfig.php - e.g.
* $a->config['system']['addon'] = 'plugin1,plugin2,facebook';
* 3. Visit your site url + '/facebook' (e.g. http://example.com/facebook)
* and click 'Install Facebook posting'.
* 4. This will ask you to login to Facebook and grant permission to the
* plugin to do its stuff. Allow it to do so.
* 5. You're done. To turn it off visit your site's /facebook page again and
* 'Remove Facebook posting'.
*
* Turn logging on (see the github Friendika wiki page 'Settings') and
* repeat these steps if you have trouble.
* Vidoes and embeds will not be posted if there is no other content. Links
* and images will be converted to text and long posts truncated - with a link
* to view the full post. Posts with permission settings and comments will
* not be posted to Facebook.
*
*/
define('FACEBOOK_MAXPOSTLEN', 420);
/* declare the facebook_module function so that /facebook url requests will land here */
function facebook_module() {}
/* If a->argv[1] is a nickname, this is a callback from Facebook oauth requests. */
function facebook_init(&$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(! count($r))
return;
$uid = $r[0]['uid'];
$auth_code = (($_GET['code']) ? $_GET['code'] : '');
$error = (($_GET['error_description']) ? $_GET['error_description'] : '');
if($error)
logger('facebook_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() . '/facebook/' . $nick)
. '&code=' . $auth_code);
logger('facebook_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');
fb_get_self($uid);
fb_get_friends($uid);
fb_consume_all($uid);
}
// todo: is this a browser session or a server session? where do we go?
}
}
function fb_get_self($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) $j->id);
}
}
function fb_get_friends($uid) {
$access_token = get_pconfig($uid,'facebook','access_token');
if(! $access_token)
return;
$s = fetch_url('https://graph.facebook.com/me/friends?access_token=' . $access_token);
if($s) {
logger('facebook: fb_get_friends: ' . $s);
$j = json_decode($s);
logger('facebook: fb_get_friends: json: ' . print_r($j,true));
foreach($j->data as $person) {
$s = fetch_url('https://graph.facebook.com/' . $person->id . '?access_token=' . $access_token);
if($s) {
$jp = json_decode($s);
logger('fb_get_friends: info: ' . print_r($jp,true));
// always use numeric link for consistency
$jp->link = 'http://facebook.com/profile.php?id=' . $person->id;
// check if we already have a contact
$r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `url` = '%s' LIMIT 1",
intval($uid),
dbesc($jp->link)
);
if(count($r)) {
continue;
}
else {
// create contact record
$r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `addr`, `alias`, `notify`, `poll`,
`name`, `nick`, `photo`, `network`, `rel`, `priority`,
`writable`, `blocked`, `readonly`, `pending` )
VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, %d, 0, 0, 0 ) ",
intval($uid),
dbesc(datetime_convert()),
dbesc($jp->link),
dbesc(''),
dbesc(''),
dbesc($jp->id),
dbesc('facebook ' . $jp->id),
dbesc($jp->name),
dbesc(($jp->nickname) ? $jp->nickname : strtolower($jp->first_name)),
dbesc('https://graph.facebook.com/' . $jp->id . '/picture'),
dbesc(NETWORK_FACEBOOK),
intval(REL_BUD),
intval(1),
intval(1)
);
}
$r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
dbesc($jp->link),
intval($uid)
);
if(! count($r)) {
continue;
}
$contact = $r[0];
$contact_id = $r[0]['id'];
require_once("Photo.php");
$photos = import_profile_photo($r[0]['photo'],$uid,$contact_id);
$r = q("UPDATE `contact` SET `photo` = '%s',
`thumb` = '%s',
`micro` = '%s',
`name-date` = '%s',
`uri-date` = '%s',
`avatar-date` = '%s'
WHERE `id` = %d LIMIT 1
",
dbesc($photos[0]),
dbesc($photos[1]),
dbesc($photos[2]),
dbesc(datetime_convert()),
dbesc(datetime_convert()),
dbesc(datetime_convert()),
intval($contact_id)
);
}
}
}
}
function facebook_post(&$a) {
if(local_user()){
$value = ((x($_POST,'post_by_default')) ? intval($_POST['post_by_default']) : 0);
set_pconfig(local_user(),'facebook','post_by_default', $value);
}
return;
}
function facebook_content(&$a) {
if(! local_user()) {
notice( t('Permission denied.') . EOL);
return '';
}
if($a->argc > 1 && $a->argv[1] === 'remove') {
del_pconfig(local_user(),'facebook','post');
notice( t('Facebook disabled') . EOL);
}
$fb_installed = get_pconfig(local_user(),'facebook','post');
$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/facebook/facebook.css' . '" media="all" />' . "\r\n";
$o .= '<h3>' . t('Facebook Connect') . '</h3>';
if(! $fb_installed) {
$o .= '<div id="facebook-enable-wrapper">';
$o .= '<a href="https://www.facebook.com/dialog/oauth?client_id=' . $appid . '&redirect_uri='
. $a->get_baseurl() . '/facebook/' . $a->user['nickname'] . '&scope=publish_stream,read_stream,offline_access">' . t('Install Facebook post connector') . '</a>';
$o .= '</div>';
}
if($fb_installed) {
$o .= '<div id="facebook-disable-wrapper">';
$o .= '<a href="' . $a->get_baseurl() . '/facebook/remove' . '">' . t('Remove Facebook post connector') . '</a></div>';
$o .= '<div id="facebook-post-default-form">';
$o .= '<form action="facebook" 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') . '<br />';
$o .= '<input type="submit" name="submit" value="' . t('Submit') . '" /></form></div>';
}
return $o;
}
function facebook_install() {
register_hook('post_local_end', 'addon/facebook/facebook.php', 'facebook_post_hook');
register_hook('jot_networks', 'addon/facebook/facebook.php', 'facebook_jot_nets');
register_hook('plugin_settings', 'addon/facebook/facebook.php', 'facebook_plugin_settings');
register_hook('cron', 'addon/facebook/facebook.php', 'facebook_cron');
}
function facebook_uninstall() {
unregister_hook('post_local_end', 'addon/facebook/facebook.php', 'facebook_post_hook');
unregister_hook('jot_networks', 'addon/facebook/facebook.php', 'facebook_jot_nets');
unregister_hook('plugin_settings', 'addon/facebook/facebook.php', 'facebook_plugin_settings');
unregister_hook('cron', 'addon/facebook/facebook.php', 'facebook_cron');
}
function facebook_cron($a,$b) {
$last = get_config('facebook','last_poll');
if($last) {
$next = $last + 3600;
if($next > time())
return;
}
logger('facebook_cron');
set_config('facebook','last_poll', time());
$r = q("SELECT * FROM `pconfig` WHERE `cat` = 'facebook' AND `k` = 'post' AND `v` = '1' ");
if(count($r)) {
foreach($r as $rr) {
// check for new friends once a day
$last_friend_check = get_pconfig($uid,'facebook','friend_check');
if($last_friend_check)
$next_friend_check = $last_friend_check + 86400;
if($next_friend_check <= time()) {
fb_get_friends($uid);
set_pconfig($uid,'facebook','friend_check',time());
}
fb_consume_all($rr['uid']);
}
}
}
function facebook_plugin_settings(&$a,&$b) {
$b .= '<div class="settings-block">';
$b .= '<h3>' . t('Facebook') . '</h3>';
$b .= '<a href="facebook">' . t('Facebook Connector Settings') . '</a><br />';
$b .= '</div>';
}
function facebook_jot_nets(&$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"' . $selected . 'value="1" /> '
. t('Post to Facebook') . '</div>';
}
}
function facebook_post_hook(&$a,&$b) {
/**
* Post to Facebook stream
*/
require_once('include/group.php');
logger('Facebook post');
$reply = false;
$likes = false;
if((local_user()) && (local_user() == $b['uid'])) {
if($b['parent']) {
$r = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
intval($b['parent']),
intval(local_user())
);
if(count($r) && substr($r[0]['uri'],0,4) === 'fb::')
$reply = substr($r[0]['uri'],4);
else
return;
logger('facebook reply id=' . $reply);
}
if($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));
$r = q("SELECT `notify` FROM `contact` WHERE `id` IN ( $allow_str ) AND `network` = 'face'");
$allow_arr = array();
if(count($r))
foreach($r as $rr)
$allow_arr[] = $rr['notify'];
$deny_str = dbesc(implode(', ',$deny));
$r = q("SELECT `notify` FROM `contact` WHERE `id` IN ( $deny_str ) AND `network` = 'face'");
$deny_arr = array();
if(count($r))
foreach($r as $rr)
$deny_arr[] = $rr['notify'];
if((! count($allow_arr)) && (! count($deny_arr)))
return;
}
if($b['verb'] == ACTIVITY_LIKE)
$likes = true;
$appid = get_config('facebook', 'appid' );
$secret = get_config('facebook', 'appsecret' );
if($appid && $secret) {
logger('facebook: have appid+secret');
$fb_post = intval(get_pconfig(local_user(),'facebook','post'));
$fb_enable = (($fb_post && x($_POST,'facebook_enable')) ? intval($_POST['facebook_enable']) : 0);
$fb_token = get_pconfig(local_user(),'facebook','access_token');
logger('facebook: $fb_post: ' . $fb_post . ' $fb_enable: ' . $fb_enable . ' $fb_token: ' . $fb_token,LOGGER_DEBUG);
if($fb_post && $fb_token && ($fb_enable || $b['private'])) {
logger('facebook: able to post');
require_once('library/facebook.php');
require_once('include/bbcode.php');
$msg = $b['body'];
logger('Facebook post: original msg=' . $msg, LOGGER_DATA);
// make links readable before we strip the code
$msg = preg_replace("/\[url=(.+?)\](.+?)\[\/url\]/is",'$2 $1',$msg);
$msg = preg_replace("/\[img\](.+?)\[\/img\]/is", t('Image: ') . '$1',$msg);
$msg = trim(strip_tags(bbcode($msg)));
$msg = html_entity_decode($msg,ENT_QUOTES,'UTF-8');
if (strlen($msg) > FACEBOOK_MAXPOSTLEN) {
$shortlink = "";
require_once('library/slinky.php');
$display_url = $a->get_baseurl() . '/display/' . $a->user['nickname'] . '/' . $b['id'];
$slinky = new Slinky( $display_url );
// setup a cascade of shortening services
// try to get a short link from these services
// in the order ur1.ca, trim, id.gd, tinyurl
$slinky->set_cascade( array( new Slinky_UR1ca(), new Slinky_Trim(), new Slinky_IsGd(), new Slinky_TinyURL() ) );
$shortlink = $slinky->short();
// the new message will be shortened such that "... $shortlink"
// will fit into the character limit
$msg = substr($msg, 0, FACEBOOK_MAXPOSTLEN - strlen($shortlink) - 4);
$msg .= '... ' . $shortlink;
}
if(! strlen($msg))
return;
logger('Facebook post: msg=' . $msg, LOGGER_DATA);
$postvars = array(
'access_token' => $fb_token,
'message' => $msg
);
if(($b['private']) && (! $b['parent'])) {
$postvars['privacy'] = '{"value": "CUSTOM", "friends": "SOME_FRIENDS"';
if(count($allow_arr))
$postvars['privacy'] .= ',"allow": "' . implode(',',$allow_arr) . '"';
if(count($deny_arr))
$postvars['privacy'] .= ',"deny": "' . implode(',',$deny_arr) . '"';
$postvars['privacy'] .= '}';
}
if(! $reply) {
if($b['plink'])
$postvars['actions'] = '{"name": "' . t('View on Friendika') . '", "link": "' . $b['plink'] . '"}';
}
if($reply) {
$url = 'https://graph.facebook.com/' . $reply . '/' . (($likes) ? 'likes' : 'comments');
}
else {
$url = 'https://graph.facebook.com/me/feed';
}
logger('facebook: post to ' . $url);
logger('facebook: postvars: ' . print_r($postvars,true));
$x = post_url($url, $postvars);
logger('Facebook post returns: ' . $x, LOGGER_DEBUG);
}
}
}
}
function fb_consume_all($uid) {
require_once('include/items.php');
$access_token = get_pconfig($uid,'facebook','access_token');
if(! $access_token)
return;
$s = fetch_url('https://graph.facebook.com/me/feed?access_token=' . $access_token);
if($s) {
$j = json_decode($s);
logger('fb_consume_stream: wall: ' . print_r($j,true), LOGGER_DATA);
fb_consume_stream($uid,$j,true);
}
$s = fetch_url('https://graph.facebook.com/me/home?access_token=' . $access_token);
if($s) {
$j = json_decode($s);
logger('fb_consume_stream: feed: ' . print_r($j,true), LOGGER_DATA);
fb_consume_stream($uid,$j,false);
}
}
function fb_consume_stream($uid,$j,$wall = false) {
$a = get_app();
$self = q("SELECT * FROM `contact` WHERE `self` = 1 AND `uid` = %d LIMIT 1",
intval($uid)
);
$user = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
intval($uid)
);
if(count($user))
$my_local_url = $a->get_baseurl() . '/profile/' . $user[0]['nickname'];
$self_id = get_pconfig($uid,'facebook','self_id');
if(! count($j->data) || (! strlen($self_id)))
return;
foreach($j->data as $entry) {
logger('fb_consume: entry: ' . print_r($entry,true), LOGGER_DATA);
$datarray = array();
$we_posted = false;
$app = $entry->application;
if($app->id == get_config('facebook','appid') && $wall)
$we_posted = true;
if($we_posted) {
$r = q("SELECT * FROM `item` WHERE `wall` = 1 AND `uid` = %d AND `created` > '%s' AND `created` < '%s' AND `deleted` = 0 LIMIT 1",
intval($uid),
dbesc(datetime_convert('UTC','UTC',$entry->created_time . ' - 1 minute')),
dbesc(datetime_convert('UTC','UTC',$entry->created_time . ' + 1 minute'))
);
}
else {
$r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `deleted` = 0 LIMIT 1",
dbesc('fb::' . $entry->id),
intval($uid)
);
}
if(count($r)) {
$post_exists = true;
$orig_post = $r[0];
$top_item = $r[0]['id'];
}
else {
$post_exists = false;
$orig_post = null;
}
if(! $orig_post) {
$datarray['gravity'] = 0;
$datarray['uid'] = $uid;
$datarray['wall'] = (($wall) ? 1 : 0);
$datarray['uri'] = $datarray['parent-uri'] = 'fb::' . $entry->id;
$from = $entry->from;
if($from->id == $self_id)
$datarray['contact-id'] = $self[0]['id'];
else {
$r = q("SELECT * FROM `contact` WHERE `notify` = '%s' AND `uid` = %d LIMIT 1",
dbesc($from->id),
intval($uid)
);
if(count($r))
$datarray['contact-id'] = $r[0]['id'];
}
$datarray['verb'] = ACTIVITY_POST;
if($wall) {
$datarray['owner-name'] = $self[0]['name'];
$datarray['author-link'] = $self[0]['url'];
$datarray['author-avatar'] = $self[0]['thumb'];
}
$datarray['author-name'] = $from->name;
$datarray['author-link'] = 'http://facebook.com/profile.php?id=' . $from->id;
$datarray['author-avatar'] = 'https://graph.facebook.com/' . $from->id . '/picture';
$datarray['body'] = $entry->message;
if($entry->picture)
$datarray['body'] .= "\n\n" . '[img]' . $entry->picture . '[/img]';
if($entry->link)
$datarray['body'] .= "\n" . linkify($entry->link);
if($entry->name)
$datarray['body'] .= "\n" . $entry->name;
if($entry->caption)
$datarray['body'] .= "\n" . $entry->caption;
if($entry->description)
$datarray['body'] .= "\n" . $entry->description;
$datarray['created'] = datetime_convert('UTC','UTC',$entry->created_time);
$datarray['edited'] = datetime_convert('UTC','UTC',$entry->updated_time);
if($entry->privacy && $entry->privacy->value !== 'EVERYONE')
$datarray['private'] = 1;
$top_item = item_store($datarray);
$r = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
intval($top_item),
intval($uid)
);
if(count($r))
$orig_post = $r[0];
}
$likers = $entry->likes->data;
$comments = $entry->comments->data;
if(is_array($likers)) {
foreach($likers as $likes) {
$r = q("SELECT * FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `verb` = '%s' AND `author-link` = '%s'
LIMIT 1",
dbesc('fb::' . $entry->id),
intval($uid),
dbesc(ACTIVITY_LIKE),
dbesc('http://facebook.com/profile.php?id=' . $likes->id)
);
if(count($r))
continue;
$likedata = array();
$likedata['parent'] = $top_item;
$likedata['verb'] = ACTIVITY_LIKE;
$likedata['gravity'] = 3;
$likedata['uid'] = $uid;
$likedata['wall'] = (($wall) ? 1 : 0);
$likedata['uri'] = item_new_uri($a->get_baseurl(), $uid);
$likedata['parent-uri'] = 'fb::' . $entry->id;
if($likes->id == $self_id)
$likedata['contact-id'] = $self[0]['id'];
else {
$r = q("SELECT * FROM `contact` WHERE `notify` = '%s' AND `uid` = %d LIMIT 1",
dbesc($likes->id),
intval($uid)
);
if(count($r))
$likedata['contact-id'] = $r[0]['id'];
}
if(! x($likedata,'contact-id'))
$likedata['contact-id'] = $orig_post['contact-id'];
$likedata['verb'] = ACTIVITY_LIKE;
$likedata['author-name'] = $likes->name;
$likedata['author-link'] = 'http://facebook.com/profile.php?id=' . $likes->id;
$likedata['author-avatar'] = 'https://graph.facebook.com/' . $likes->id . '/picture';
$likedata['body'] = sprintf( t('%1$s likes %2$s\'s %3$s'), $likes->name, $orig_post['author-name'], t('post'));
$item = item_store($likedata);
}
}
if(is_array($comments)) {
foreach($comments as $cmnt) {
$r = q("SELECT * FROM `item` WHERE `uid` = %d AND `uri` = '%s' LIMIT 1",
intval($uid),
dbesc('fb::' . $cmnt->id)
);
if(count($r))
continue;
$cmntdata = array();
$cmntdata['parent'] = $top_item;
$cmntdata['verb'] = ACTIVITY_POST;
$cmntdata['gravity'] = 6;
$cmntdata['uid'] = $uid;
$cmntdata['wall'] = (($wall) ? 1 : 0);
$cmntdata['uri'] = 'fb::' . $cmnt->id;
$cmntdata['parent-uri'] = 'fb::' . $entry->id;
if($cmnt->from->id == $self_id) {
$cmntdata['contact-id'] = $self[0]['id'];
// see if I already posted it here locally and we're now getting it back from FB
$r = q("SELECT * FROM `item` WHERE `uid` = %d AND `created` > '%s' AND `created` < '%s'
AND `parent-uri` = '%s' AND `author-link` = '%s' LIMIT 1",
intval($uid),
dbesc(datetime_convert('UTC','UTC',$cmnt->created_time . ' - 1 minute')),
dbesc(datetime_convert('UTC','UTC',$cmnt->created_time . ' + 1 minute')),
dbesc('fb::' . $entry->id),
dbesc($my_local_url)
);
if(count($r))
continue;
}
elseif(is_array($orig_post) && (x($orig_post,'contact-id')))
$cmntdata['contact-id'] = $orig_post['contact-id'];
else {
$r = q("SELECT * FROM `contact` WHERE `notify` = '%s' AND `uid` = %d LIMIT 1",
dbesc($cmnt->from->id),
intval($uid)
);
if(count($r))
$cmntdata['contact-id'] = $r[0]['id'];
}
$cmntdata['verb'] = ACTIVITY_POST;
$cmntdata['author-name'] = $cmnt->from->name;
$cmntdata['author-link'] = 'http://facebook.com/profile.php?id=' . $cmnt->from->id;
$cmntdata['author-avatar'] = 'https://graph.facebook.com/' . $cmnt->from->id . '/picture';
$cmntdata['body'] = $cmnt->message;
$item = item_store($cmntdata);
}
}
}
}