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friendica/include/socgraph.php

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<?php
require_once('include/datetime.php');
require_once("include/Scrape.php");
require_once("include/html2bbcode.php");
/*
To-Do:
- Move GNU Social URL schemata (http://server.tld/user/number) to http://server.tld/username
- Fetch profile data from profile page for Redmatrix users
- Detect if it is a forum
*/
/*
* poco_load
*
* Given a contact-id (minimum), load the PortableContacts friend list for that contact,
* and add the entries to the gcontact (Global Contact) table, or update existing entries
* if anything (name or photo) has changed.
* We use normalised urls for comparison which ignore http vs https and www.domain vs domain
*
* Once the global contact is stored add (if necessary) the contact linkage which associates
* the given uid, cid to the global contact entry. There can be many uid/cid combinations
* pointing to the same global contact id.
*
*/
function poco_load($cid,$uid = 0,$zcid = 0,$url = null) {
$a = get_app();
if($cid) {
if((! $url) || (! $uid)) {
$r = q("select `poco`, `uid` from `contact` where `id` = %d limit 1",
intval($cid)
);
if(count($r)) {
$url = $r[0]['poco'];
$uid = $r[0]['uid'];
}
}
if(! $uid)
return;
}
if(! $url)
return;
$url = $url . (($uid) ? '/@me/@all?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation' : '?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation') ;
logger('poco_load: ' . $url, LOGGER_DEBUG);
$s = fetch_url($url);
logger('poco_load: returns ' . $s, LOGGER_DATA);
logger('poco_load: return code: ' . $a->get_curl_code(), LOGGER_DEBUG);
if(($a->get_curl_code() > 299) || (! $s))
return;
$j = json_decode($s);
logger('poco_load: json: ' . print_r($j,true),LOGGER_DATA);
if(! isset($j->entry))
return;
$total = 0;
foreach($j->entry as $entry) {
$total ++;
$profile_url = '';
$profile_photo = '';
$connect_url = '';
$name = '';
$network = '';
$updated = '0000-00-00 00:00:00';
$location = '';
$about = '';
$keywords = '';
$gender = '';
$generation = 0;
$name = $entry->displayName;
if(isset($entry->urls)) {
foreach($entry->urls as $url) {
if($url->type == 'profile') {
$profile_url = $url->value;
continue;
}
if($url->type == 'webfinger') {
$connect_url = str_replace('acct:' , '', $url->value);
continue;
}
}
}
if(isset($entry->photos)) {
foreach($entry->photos as $photo) {
if($photo->type == 'profile') {
$profile_photo = $photo->value;
continue;
}
}
}
if(isset($entry->updated))
$updated = date("Y-m-d H:i:s", strtotime($entry->updated));
if(isset($entry->network))
$network = $entry->network;
if(isset($entry->currentLocation))
$location = $entry->currentLocation;
if(isset($entry->aboutMe))
$about = html2bbcode($entry->aboutMe);
if(isset($entry->gender))
$gender = $entry->gender;
if(isset($entry->generation) AND ($entry->generation > 0))
$generation = ++$entry->generation;
if(isset($entry->tags))
foreach($entry->tags as $tag)
$keywords = implode(", ", $tag);
// If you query a Friendica server for its profiles, the network has to be Friendica
// To-Do: It could also be a Redmatrix server
//if ($uid == 0)
// $network = NETWORK_DFRN;
poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid, $uid, $zcid);
// Update the Friendica contacts. Diaspora is doing it via a message. (See include/diaspora.php)
if (($location != "") OR ($about != "") OR ($keywords != "") OR ($gender != ""))
q("UPDATE `contact` SET `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s'
WHERE `nurl` = '%s' AND NOT `self` AND `network` = '%s'",
dbesc($location),
dbesc($about),
dbesc($keywords),
dbesc($gender),
dbesc(normalise_link($profile_url)),
dbesc(NETWORK_DFRN));
}
logger("poco_load: loaded $total entries",LOGGER_DEBUG);
q("DELETE FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `zcid` = %d AND `updated` < UTC_TIMESTAMP - INTERVAL 2 DAY",
intval($cid),
intval($uid),
intval($zcid)
);
}
function poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid = 0, $uid = 0, $zcid = 0) {
$a = get_app();
// Generation:
// 0: No definition
// 1: Profiles on this server
// 2: Contacts of profiles on this server
// 3: Contacts of contacts of profiles on this server
// 4: ...
$gcid = "";
if ($profile_url == "")
return $gcid;
$urlparts = parse_url($profile_url);
if (!isset($urlparts["scheme"]))
return $gcid;
if (in_array($urlparts["host"], array("www.facebook.com", "facebook.com", "twitter.com",
"identi.ca", "alpha.app.net")))
return $gcid;
$orig_updated = $updated;
// Don't store the statusnet connector as network
// We can't simply set this to NETWORK_OSTATUS since the connector could have fetched posts from friendica as well
if ($network == NETWORK_STATUSNET)
$network = "";
// The global contacts should contain the original picture, not the cached one
if (($generation != 1) AND stristr(normalise_link($profile_photo), normalise_link($a->get_baseurl()."/photo/")))
$profile_photo = "";
$r = q("SELECT `network` FROM `contact` WHERE `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
);
if(count($r))
$network = $r[0]["network"];
if (($network == "") OR ($network == NETWORK_OSTATUS)) {
$r = q("SELECT `network`, `url` FROM `contact` WHERE `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
dbesc($profile_url), dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
);
if(count($r)) {
$network = $r[0]["network"];
$profile_url = $r[0]["url"];
}
}
$x = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
dbesc(normalise_link($profile_url))
);
if (count($x)) {
if (($network == "") AND ($x[0]["network"] != NETWORK_STATUSNET))
$network = $x[0]["network"];
if ($updated == "0000-00-00 00:00:00")
$updated = $x[0]["updated"];
$created = $x[0]["created"];
$server_url = $x[0]["server_url"];
$nick = $x[0]["nick"];
} else {
$created = "0000-00-00 00:00:00";
$server_url = "";
$urlparts = parse_url($profile_url);
$nick = end(explode("/", $urlparts["path"]));
}
if ((($network == "") OR ($name == "") OR ($profile_photo == "") OR ($server_url == ""))
AND poco_reachable($profile_url, $server_url, $network, true)) {
$data = probe_url($profile_url);
$network = $data["network"];
$name = $data["name"];
$nick = $data["nick"];
$profile_url = $data["url"];
$profile_photo = $data["photo"];
$server_url = $data["baseurl"];
}
if (count($x) AND ($x[0]["network"] == "") AND ($network != "")) {
q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
dbesc($network),
dbesc(normalise_link($profile_url))
);
}
if (($name == "") OR ($profile_photo == ""))
return $gcid;
if (!in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA)))
return $gcid;
logger("profile-check generation: ".$generation." Network: ".$network." URL: ".$profile_url." name: ".$name." avatar: ".$profile_photo, LOGGER_DEBUG);
poco_check_server($server_url, $network);
if(count($x)) {
$gcid = $x[0]['id'];
if (($location == "") AND ($x[0]['location'] != ""))
$location = $x[0]['location'];
if (($about == "") AND ($x[0]['about'] != ""))
$about = $x[0]['about'];
if (($gender == "") AND ($x[0]['gender'] != ""))
$gender = $x[0]['gender'];
if (($keywords == "") AND ($x[0]['keywords'] != ""))
$keywords = $x[0]['keywords'];
if (($generation == 0) AND ($x[0]['generation'] > 0))
$generation = $x[0]['generation'];
if($x[0]['name'] != $name || $x[0]['photo'] != $profile_photo || $x[0]['updated'] < $updated) {
q("UPDATE `gcontact` SET `name` = '%s', `network` = '%s', `photo` = '%s', `connect` = '%s', `url` = '%s', `server_url` = '%s',
`updated` = '%s', `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s', `generation` = %d
WHERE (`generation` >= %d OR `generation` = 0) AND `nurl` = '%s'",
dbesc($name),
dbesc($network),
dbesc($profile_photo),
dbesc($connect_url),
dbesc($profile_url),
dbesc($server_url),
dbesc($updated),
dbesc($location),
dbesc($about),
dbesc($keywords),
dbesc($gender),
intval($generation),
intval($generation),
dbesc(normalise_link($profile_url))
);
}
} else {
q("INSERT INTO `gcontact` (`name`, `nick`, `network`, `url`, `nurl`, `photo`, `connect`, `server_url`, `created`, `updated`, `location`, `about`, `keywords`, `gender`, `generation`)
VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d)",
dbesc($name),
dbesc($nick),
dbesc($network),
dbesc($profile_url),
dbesc(normalise_link($profile_url)),
dbesc($profile_photo),
dbesc($connect_url),
dbesc($server_url),
dbesc(datetime_convert()),
dbesc($updated),
dbesc($location),
dbesc($about),
dbesc($keywords),
dbesc($gender),
intval($generation)
);
$x = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
dbesc(normalise_link($profile_url))
);
if(count($x))
$gcid = $x[0]['id'];
}
if(! $gcid)
return $gcid;
$r = q("SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
intval($cid),
intval($uid),
intval($gcid),
intval($zcid)
);
if(! count($r)) {
q("INSERT INTO `glink` (`cid`,`uid`,`gcid`,`zcid`, `updated`) VALUES (%d,%d,%d,%d, '%s') ",
intval($cid),
intval($uid),
intval($gcid),
intval($zcid),
dbesc(datetime_convert())
);
} else {
q("UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
dbesc(datetime_convert()),
intval($cid),
intval($uid),
intval($gcid),
intval($zcid)
);
}
// For unknown reasons there are sometimes duplicates
q("DELETE FROM `gcontact` WHERE `nurl` = '%s' AND `id` != %d AND
NOT EXISTS (SELECT `gcid` FROM `glink` WHERE `gcid` = `gcontact`.`id`)",
dbesc(normalise_link($profile_url)),
intval($gcid)
);
return $gcid;
}
function poco_reachable($profile, $server = "", $network = "", $force = false) {
if ($server == "")
$server = poco_detect_server($profile);
if ($server == "")
return true;
return poco_check_server($server, $network, $force);
}
function poco_detect_server($profile) {
// Try to detect the server path based upon some known standard paths
$server_url = "";
if ($server_url == "") {
$friendica = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$1$2", $profile);
if ($friendica != $profile) {
$server_url = $friendica;
$network = NETWORK_DFRN;
}
}
if ($server_url == "") {
$diaspora = preg_replace("=(https?://)(.*)/u/(.*)=ism", "$1$2", $profile);
if ($diaspora != $profile) {
$server_url = $diaspora;
$network = NETWORK_DIASPORA;
}
}
if ($server_url == "") {
$red = preg_replace("=(https?://)(.*)/channel/(.*)=ism", "$1$2", $profile);
if ($red != $profile) {
$server_url = $red;
$network = NETWORK_DIASPORA;
}
}
return $server_url;
}
function poco_last_updated($profile, $force = false) {
$gcontacts = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s'",
dbesc(normalise_link($profile)));
if ($gcontacts[0]["created"] == "0000-00-00 00:00:00")
q("UPDATE `gcontact` SET `created` = '%s' WHERE `nurl` = '%s'",
dbesc(datetime_convert()), dbesc(normalise_link($profile)));
if ($gcontacts[0]["server_url"] != "")
$server_url = $gcontacts[0]["server_url"];
else
$server_url = poco_detect_server($profile);
if ($server_url != "") {
if (!poco_check_server($server_url, $gcontacts[0]["network"], $force)) {
if ($force)
q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
dbesc(datetime_convert()), dbesc(normalise_link($profile)));
return false;
}
q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
dbesc($server_url), dbesc(normalise_link($profile)));
}
if (in_array($gcontacts[0]["network"], array("", NETWORK_FEED))) {
$server = q("SELECT `network` FROM `gserver` WHERE `nurl` = '%s' AND `network` != ''",
dbesc(normalise_link($server_url)));
if ($server)
q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
dbesc($server[0]["network"]), dbesc(normalise_link($profile)));
else
return;
}
// noscrape is really fast so we don't cache the call.
if (($gcontacts[0]["server_url"] != "") AND ($gcontacts[0]["nick"] != "")) {
// Use noscrape if possible
$server = q("SELECT `noscrape` FROM `gserver` WHERE `nurl` = '%s' AND `noscrape` != ''", dbesc(normalise_link($gcontacts[0]["server_url"])));
if ($server) {
$noscraperet = z_fetch_url($server[0]["noscrape"]."/".$gcontacts[0]["nick"]);
if ($noscraperet["success"] AND ($noscraperet["body"] != "")) {
;
$noscrape = json_decode($noscraperet["body"], true);
if (($noscrape["fn"] != "") AND ($noscrape["fn"] != $gcontacts[0]["name"]))
q("UPDATE `gcontact` SET `name` = '%s' WHERE `nurl` = '%s'",
dbesc($noscrape["fn"]), dbesc(normalise_link($profile)));
if (($noscrape["photo"] != "") AND ($noscrape["photo"] != $gcontacts[0]["photo"]))
q("UPDATE `gcontact` SET `photo` = '%s' WHERE `nurl` = '%s'",
dbesc($noscrape["photo"]), dbesc(normalise_link($profile)));
if (($noscrape["updated"] != "") AND ($noscrape["updated"] != $gcontacts[0]["updated"]))
q("UPDATE `gcontact` SET `updated` = '%s' WHERE `nurl` = '%s'",
dbesc($noscrape["updated"]), dbesc(normalise_link($profile)));
if (($noscrape["gender"] != "") AND ($noscrape["gender"] != $gcontacts[0]["gender"]))
q("UPDATE `gcontact` SET `gender` = '%s' WHERE `nurl` = '%s'",
dbesc($noscrape["gender"]), dbesc(normalise_link($profile)));
if (($noscrape["pdesc"] != "") AND ($noscrape["pdesc"] != $gcontacts[0]["about"]))
q("UPDATE `gcontact` SET `about` = '%s' WHERE `nurl` = '%s'",
dbesc($noscrape["pdesc"]), dbesc(normalise_link($profile)));
if (($noscrape["about"] != "") AND ($noscrape["about"] != $gcontacts[0]["about"]))
q("UPDATE `gcontact` SET `about` = '%s' WHERE `nurl` = '%s'",
dbesc($noscrape["about"]), dbesc(normalise_link($profile)));
if (isset($noscrape["comm"]) AND ($noscrape["comm"] != $gcontacts[0]["community"]))
q("UPDATE `gcontact` SET `community` = %d WHERE `nurl` = '%s'",
intval($noscrape["comm"]), dbesc(normalise_link($profile)));
if (isset($noscrape["tags"]))
$keywords = implode(" ", $noscrape["tags"]);
else
$keywords = "";
if (($keywords != "") AND ($keywords != $gcontacts[0]["keywords"]))
q("UPDATE `gcontact` SET `keywords` = '%s' WHERE `nurl` = '%s'",
dbesc($keywords), dbesc(normalise_link($profile)));
$location = $noscrape["locality"];
if ($noscrape["region"] != "") {
if ($location != "")
$location .= ", ";
$location .= $noscrape["region"];
}
if ($noscrape["country-name"] != "") {
if ($location != "")
$location .= ", ";
$location .= $noscrape["country-name"];
}
if (($location != "") AND ($location != $gcontacts[0]["location"]))
q("UPDATE `gcontact` SET `location` = '%s' WHERE `nurl` = '%s'",
dbesc($location), dbesc(normalise_link($profile)));
// If we got data from noscrape then mark the contact as reachable
if (is_array($noscrape) AND count($noscrape))
q("UPDATE `gcontact` SET `last_contact` = '%s' WHERE `nurl` = '%s'",
dbesc(datetime_convert()), dbesc(normalise_link($profile)));
return $noscrape["updated"];
}
}
}
// If we only can poll the feed, then we only do this once a while
if (!$force AND !poco_do_update($gcontacts[0]["created"], $gcontacts[0]["updated"], $gcontacts[0]["last_failure"], $gcontacts[0]["last_contact"]))
return $gcontacts[0]["updated"];
$data = probe_url($profile);
if (($data["poll"] == "") OR ($data["network"] == NETWORK_FEED)) {
q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
dbesc(datetime_convert()), dbesc(normalise_link($profile)));
return false;
}
if (($data["name"] != "") AND ($data["name"] != $gcontacts[0]["name"]))
q("UPDATE `gcontact` SET `name` = '%s' WHERE `nurl` = '%s'",
dbesc($data["name"]), dbesc(normalise_link($profile)));
if (($data["nick"] != "") AND ($data["nick"] != $gcontacts[0]["nick"]))
q("UPDATE `gcontact` SET `nick` = '%s' WHERE `nurl` = '%s'",
dbesc($data["nick"]), dbesc(normalise_link($profile)));
if (($data["addr"] != "") AND ($data["addr"] != $gcontacts[0]["connect"]))
q("UPDATE `gcontact` SET `connect` = '%s' WHERE `nurl` = '%s'",
dbesc($data["addr"]), dbesc(normalise_link($profile)));
if (($data["photo"] != "") AND ($data["photo"] != $gcontacts[0]["photo"]))
q("UPDATE `gcontact` SET `photo` = '%s' WHERE `nurl` = '%s'",
dbesc($data["photo"]), dbesc(normalise_link($profile)));
if (($data["baseurl"] != "") AND ($data["baseurl"] != $gcontacts[0]["server_url"]))
q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
dbesc($data["baseurl"]), dbesc(normalise_link($profile)));
$feedret = z_fetch_url($data["poll"]);
if (!$feedret["success"]) {
q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
dbesc(datetime_convert()), dbesc(normalise_link($profile)));
return false;
}
$doc = new DOMDocument();
@$doc->loadXML($feedret["body"]);
$xpath = new DomXPath($doc);
$xpath->registerNamespace('atom', "http://www.w3.org/2005/Atom");
$entries = $xpath->query('/atom:feed/atom:entry');
$last_updated = "";
foreach ($entries AS $entry) {
$published = $xpath->query('atom:published/text()', $entry)->item(0)->nodeValue;
$updated = $xpath->query('atom:updated/text()', $entry)->item(0)->nodeValue;
if ($last_updated < $published)
$last_updated = $published;
if ($last_updated < $updated)
$last_updated = $updated;
}
// Maybe there aren't any entries. Then check if it is a valid feed
if ($last_updated == "")
if ($xpath->query('/atom:feed')->length > 0)
$last_updated = "0000-00-00 00:00:00";
q("UPDATE `gcontact` SET `updated` = '%s', `last_contact` = '%s' WHERE `nurl` = '%s'",
dbesc($last_updated), dbesc(datetime_convert()), dbesc(normalise_link($profile)));
if (($gcontacts[0]["generation"] == 0))
q("UPDATE `gcontact` SET `generation` = 9 WHERE `nurl` = '%s'",
dbesc(normalise_link($profile)));
return($last_updated);
}
function poco_do_update($created, $updated, $last_failure, $last_contact) {
$now = strtotime(datetime_convert());
if ($updated > $last_contact)
$contact_time = strtotime($updated);
else
$contact_time = strtotime($last_contact);
$failure_time = strtotime($last_failure);
$created_time = strtotime($created);
// If there is no "created" time then use the current time
if ($created_time <= 0)
$created_time = $now;
// If the last contact was less than 24 hours then don't update
if (($now - $contact_time) < (60 * 60 * 24))
return false;
// If the last failure was less than 24 hours then don't update
if (($now - $failure_time) < (60 * 60 * 24))
return false;
// If the last contact was less than a week ago and the last failure is older than a week then don't update
//if ((($now - $contact_time) < (60 * 60 * 24 * 7)) AND ($contact_time > $failure_time))
// return false;
// If the last contact time was more than a week ago and the contact was created more than a week ago, then only try once a week
if ((($now - $contact_time) > (60 * 60 * 24 * 7)) AND (($now - $created_time) > (60 * 60 * 24 * 7)) AND (($now - $failure_time) < (60 * 60 * 24 * 7)))
return false;
// If the last contact time was more than a month ago and the contact was created more than a month ago, then only try once a month
if ((($now - $contact_time) > (60 * 60 * 24 * 30)) AND (($now - $created_time) > (60 * 60 * 24 * 30)) AND (($now - $failure_time) < (60 * 60 * 24 * 30)))
return false;
return true;
}
function poco_to_boolean($val) {
if (($val == "true") OR ($val == 1))
return(true);
if (($val == "false") OR ($val == 0))
return(false);
return ($val);
}
function poco_check_server($server_url, $network = "", $force = false) {
if ($server_url == "")
return false;
$servers = q("SELECT * FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
if ($servers) {
if ($servers[0]["created"] == "0000-00-00 00:00:00")
q("UPDATE `gserver` SET `created` = '%s' WHERE `nurl` = '%s'",
dbesc(datetime_convert()), dbesc(normalise_link($server_url)));
$poco = $servers[0]["poco"];
$noscrape = $servers[0]["noscrape"];
if ($network == "")
$network = $servers[0]["network"];
$last_contact = $servers[0]["last_contact"];
$last_failure = $servers[0]["last_failure"];
$version = $servers[0]["version"];
$platform = $servers[0]["platform"];
$site_name = $servers[0]["site_name"];
$info = $servers[0]["info"];
$register_policy = $servers[0]["register_policy"];
if (!$force AND !poco_do_update($servers[0]["created"], "", $last_failure, $last_contact)) {
logger("Use cached data for server ".$server_url, LOGGER_DEBUG);
return ($last_contact >= $last_failure);
}
} else {
$poco = "";
$noscrape = "";
$version = "";
$platform = "";
$site_name = "";
$info = "";
$register_policy = -1;
$last_contact = "0000-00-00 00:00:00";
$last_failure = "0000-00-00 00:00:00";
}
logger("Server ".$server_url." is unknown. Start discovery.", LOGGER_DEBUG);
$failure = false;
$orig_last_failure = $last_failure;
// Check if the page is accessible via SSL.
$server_url = str_replace("http://", "https://", $server_url);
$serverret = z_fetch_url($server_url."/.well-known/host-meta");
// Maybe the page is unencrypted only?
$xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
if (!$serverret["success"] OR ($serverret["body"] == "") OR (@sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
$server_url = str_replace("https://", "http://", $server_url);
$serverret = z_fetch_url($server_url."/.well-known/host-meta");
$xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
}
if (!$serverret["success"] OR ($serverret["body"] == "") OR (sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
$last_failure = datetime_convert();
$failure = true;
} elseif ($network == NETWORK_DIASPORA)
$last_contact = datetime_convert();
if (!$failure) {
// Test for Diaspora
$serverret = z_fetch_url($server_url);
$lines = explode("\n",$serverret["header"]);
if(count($lines))
foreach($lines as $line) {
$line = trim($line);
if(stristr($line,'X-Diaspora-Version:')) {
$platform = "Diaspora";
$version = trim(str_replace("X-Diaspora-Version:", "", $line));
$version = trim(str_replace("x-diaspora-version:", "", $version));
$network = NETWORK_DIASPORA;
}
}
}
if (!$failure) {
// Test for Statusnet
// Will also return data for Friendica and GNU Social - but it will be overwritten later
// The "not implemented" is a special treatment for really, really old Friendica versions
$serverret = z_fetch_url($server_url."/api/statusnet/version.json");
if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND ($serverret["body"] != '') AND (strlen($serverret["body"]) < 250)) {
$platform = "StatusNet";
$version = trim($serverret["body"], '"');
$network = NETWORK_OSTATUS;
}
// Test for GNU Social
$serverret = z_fetch_url($server_url."/api/gnusocial/version.json");
if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND ($serverret["body"] != '') AND (strlen($serverret["body"]) < 250)) {
$platform = "GNU Social";
$version = trim($serverret["body"], '"');
$network = NETWORK_OSTATUS;
}
$serverret = z_fetch_url($server_url."/api/statusnet/config.json");
if ($serverret["success"]) {
$data = json_decode($serverret["body"]);
if (isset($data->site->server)) {
$last_contact = datetime_convert();
if (isset($data->site->hubzilla)) {
$platform = $data->site->hubzilla->PLATFORM_NAME;
$version = $data->site->hubzilla->RED_VERSION;
$network = NETWORK_DIASPORA;
}
if (isset($data->site->redmatrix)) {
if (isset($data->site->redmatrix->PLATFORM_NAME))
$platform = $data->site->redmatrix->PLATFORM_NAME;
elseif (isset($data->site->redmatrix->RED_PLATFORM))
$platform = $data->site->redmatrix->RED_PLATFORM;
$version = $data->site->redmatrix->RED_VERSION;
$network = NETWORK_DIASPORA;
}
if (isset($data->site->friendica)) {
$platform = $data->site->friendica->FRIENDICA_PLATFORM;
$version = $data->site->friendica->FRIENDICA_VERSION;
$network = NETWORK_DFRN;
}
$site_name = $data->site->name;
$data->site->closed = poco_to_boolean($data->site->closed);
$data->site->private = poco_to_boolean($data->site->private);
$data->site->inviteonly = poco_to_boolean($data->site->inviteonly);
if (!$data->site->closed AND !$data->site->private and $data->site->inviteonly)
$register_policy = REGISTER_APPROVE;
elseif (!$data->site->closed AND !$data->site->private)
$register_policy = REGISTER_OPEN;
else
$register_policy = REGISTER_CLOSED;
}
}
}
// Query statistics.json. Optional package for Diaspora, Friendica and Redmatrix
if (!$failure) {
$serverret = z_fetch_url($server_url."/statistics.json");
if ($serverret["success"]) {
$data = json_decode($serverret["body"]);
if ($version == "")
$version = $data->version;
$site_name = $data->name;
if (isset($data->network) AND ($platform == ""))
$platform = $data->network;
if ($platform == "Diaspora")
$network = NETWORK_DIASPORA;
if ($data->registrations_open)
$register_policy = REGISTER_OPEN;
else
$register_policy = REGISTER_CLOSED;
if (isset($data->version))
$last_contact = datetime_convert();
}
}
// Check for noscrape
// Friendica servers could be detected as OStatus servers
if (!$failure AND in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS))) {
$serverret = z_fetch_url($server_url."/friendica/json");
if (!$serverret["success"])
$serverret = z_fetch_url($server_url."/friendika/json");
if ($serverret["success"]) {
$data = json_decode($serverret["body"]);
if (isset($data->version)) {
$last_contact = datetime_convert();
$network = NETWORK_DFRN;
$noscrape = $data->no_scrape_url;
$version = $data->version;
$site_name = $data->site_name;
$info = $data->info;
$register_policy_str = $data->register_policy;
$platform = $data->platform;
switch ($register_policy_str) {
case "REGISTER_CLOSED":
$register_policy = REGISTER_CLOSED;
break;
case "REGISTER_APPROVE":
$register_policy = REGISTER_APPROVE;
break;
case "REGISTER_OPEN":
$register_policy = REGISTER_OPEN;
break;
}
}
}
}
// Look for poco
if (!$failure) {
$serverret = z_fetch_url($server_url."/poco");
if ($serverret["success"]) {
$data = json_decode($serverret["body"]);
if (isset($data->totalResults)) {
$poco = $server_url."/poco";
$last_contact = datetime_convert();
}
}
}
// Check again if the server exists
$servers = q("SELECT `nurl` FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
if ($servers)
q("UPDATE `gserver` SET `url` = '%s', `version` = '%s', `site_name` = '%s', `info` = '%s', `register_policy` = %d, `poco` = '%s', `noscrape` = '%s',
`network` = '%s', `platform` = '%s', `last_contact` = '%s', `last_failure` = '%s' WHERE `nurl` = '%s'",
dbesc($server_url),
dbesc($version),
dbesc($site_name),
dbesc($info),
intval($register_policy),
dbesc($poco),
dbesc($noscrape),
dbesc($network),
dbesc($platform),
dbesc($last_contact),
dbesc($last_failure),
dbesc(normalise_link($server_url))
);
else
q("INSERT INTO `gserver` (`url`, `nurl`, `version`, `site_name`, `info`, `register_policy`, `poco`, `noscrape`, `network`, `platform`, `created`, `last_contact`, `last_failure`)
VALUES ('%s', '%s', '%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s')",
dbesc($server_url),
dbesc(normalise_link($server_url)),
dbesc($version),
dbesc($site_name),
dbesc($info),
intval($register_policy),
dbesc($poco),
dbesc($noscrape),
dbesc($network),
dbesc($platform),
dbesc(datetime_convert()),
dbesc($last_contact),
dbesc($last_failure),
dbesc(datetime_convert())
);
logger("End discovery for server ".$server_url, LOGGER_DEBUG);
return !$failure;
}
function poco_contact_from_body($body, $created, $cid, $uid) {
preg_replace_callback("/\[share(.*?)\].*?\[\/share\]/ism",
function ($match) use ($created, $cid, $uid){
return(sub_poco_from_share($match, $created, $cid, $uid));
}, $body);
}
function sub_poco_from_share($share, $created, $cid, $uid) {
$profile = "";
preg_match("/profile='(.*?)'/ism", $share[1], $matches);
if ($matches[1] != "")
$profile = $matches[1];
preg_match('/profile="(.*?)"/ism', $share[1], $matches);
if ($matches[1] != "")
$profile = $matches[1];
if ($profile == "")
return;
logger("prepare poco_check for profile ".$profile, LOGGER_DEBUG);
poco_check($profile, "", "", "", "", "", "", "", "", $created, 3, $cid, $uid);
}
function poco_store($item) {
// Isn't it public?
if ($item['private'])
return;
// Or is it from a network where we don't store the global contacts?
if (!in_array($item["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, NETWORK_STATUSNET, "")))
return;
// Is it a global copy?
$store_gcontact = ($item["uid"] == 0);
// Is it a comment on a global copy?
if (!$store_gcontact AND ($item["uri"] != $item["parent-uri"])) {
$q = q("SELECT `id` FROM `item` WHERE `uri`='%s' AND `uid` = 0", $item["parent-uri"]);
$store_gcontact = count($q);
}
if (!$store_gcontact)
return;
// "3" means: We don't know this contact directly (Maybe a reshared item)
$generation = 3;
$network = "";
$profile_url = $item["author-link"];
// Is it a user from our server?
$q = q("SELECT `id` FROM `contact` WHERE `self` AND `nurl` = '%s' LIMIT 1",
dbesc(normalise_link($item["author-link"])));
if (count($q)) {
logger("Our user (generation 1): ".$item["author-link"], LOGGER_DEBUG);
$generation = 1;
$network = NETWORK_DFRN;
} else { // Is it a contact from a user on our server?
$q = q("SELECT `network`, `url` FROM `contact` WHERE `uid` != 0 AND `network` != ''
AND (`nurl` = '%s' OR `alias` IN ('%s', '%s')) AND `network` != '%s' LIMIT 1",
dbesc(normalise_link($item["author-link"])),
dbesc(normalise_link($item["author-link"])),
dbesc($item["author-link"]),
dbesc(NETWORK_STATUSNET));
if (count($q)) {
$generation = 2;
$network = $q[0]["network"];
$profile_url = $q[0]["url"];
logger("Known contact (generation 2): ".$profile_url, LOGGER_DEBUG);
}
}
if ($generation == 3)
logger("Unknown contact (generation 3): ".$item["author-link"], LOGGER_DEBUG);
poco_check($profile_url, $item["author-name"], $network, $item["author-avatar"], "", "", "", "", "", $item["received"], $generation, $item["contact-id"], $item["uid"]);
// Maybe its a body with a shared item? Then extract a global contact from it.
poco_contact_from_body($item["body"], $item["received"], $item["contact-id"], $item["uid"]);
}
function count_common_friends($uid,$cid) {
$r = q("SELECT count(*) as `total`
FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
where `glink`.`cid` = %d and `glink`.`uid` = %d
and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
intval($cid),
intval($uid),
intval($uid),
intval($cid)
);
// logger("count_common_friends: $uid $cid {$r[0]['total']}");
if(count($r))
return $r[0]['total'];
return 0;
}
function common_friends($uid,$cid,$start = 0,$limit=9999,$shuffle = false) {
if($shuffle)
$sql_extra = " order by rand() ";
else
$sql_extra = " order by `gcontact`.`name` asc ";
$r = q("SELECT `gcontact`.*
FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
where `glink`.`cid` = %d and `glink`.`uid` = %d
and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d )
$sql_extra limit %d, %d",
intval($cid),
intval($uid),
intval($uid),
intval($cid),
intval($start),
intval($limit)
);
return $r;
}
function count_common_friends_zcid($uid,$zcid) {
$r = q("SELECT count(*) as `total`
FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
where `glink`.`zcid` = %d
and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
intval($zcid),
intval($uid)
);
if(count($r))
return $r[0]['total'];
return 0;
}
function common_friends_zcid($uid,$zcid,$start = 0, $limit = 9999,$shuffle = false) {
if($shuffle)
$sql_extra = " order by rand() ";
else
$sql_extra = " order by `gcontact`.`name` asc ";
$r = q("SELECT `gcontact`.*
FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
where `glink`.`zcid` = %d
and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
$sql_extra limit %d, %d",
intval($zcid),
intval($uid),
intval($start),
intval($limit)
);
return $r;
}
function count_all_friends($uid,$cid) {
$r = q("SELECT count(*) as `total`
FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
where `glink`.`cid` = %d and `glink`.`uid` = %d ",
intval($cid),
intval($uid)
);
if(count($r))
return $r[0]['total'];
return 0;
}
function all_friends($uid,$cid,$start = 0, $limit = 80) {
$r = q("SELECT `gcontact`.*
FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
where `glink`.`cid` = %d and `glink`.`uid` = %d
order by `gcontact`.`name` asc LIMIT %d, %d ",
intval($cid),
intval($uid),
intval($start),
intval($limit)
);
return $r;
}
function suggestion_query($uid, $start = 0, $limit = 80) {
if(! $uid)
return array();
$network = array(NETWORK_DFRN);
if (get_config('system','diaspora_enabled'))
$network[] = NETWORK_DIASPORA;
if (!get_config('system','ostatus_disabled'))
$network[] = NETWORK_OSTATUS;
$sql_network = implode("', '", $network);
//$sql_network = "'".$sql_network."', ''";
$sql_network = "'".$sql_network."'";
$r = q("SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
INNER JOIN glink on glink.gcid = gcontact.id
where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
and not gcontact.name in ( select name from contact where uid = %d )
and not gcontact.id in ( select gcid from gcign where uid = %d )
AND `gcontact`.`updated` != '0000-00-00 00:00:00'
AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
AND `gcontact`.`network` IN (%s)
group by glink.gcid order by gcontact.updated desc,total desc limit %d, %d ",
intval($uid),
intval($uid),
intval($uid),
intval($uid),
$sql_network,
intval($start),
intval($limit)
);
if(count($r) && count($r) >= ($limit -1))
return $r;
$r2 = q("SELECT gcontact.* from gcontact
INNER JOIN glink on glink.gcid = gcontact.id
where glink.uid = 0 and glink.cid = 0 and glink.zcid = 0 and not gcontact.nurl in ( select nurl from contact where uid = %d )
and not gcontact.name in ( select name from contact where uid = %d )
and not gcontact.id in ( select gcid from gcign where uid = %d )
AND `gcontact`.`updated` != '0000-00-00 00:00:00'
AND `gcontact`.`network` IN (%s)
order by rand() limit %d, %d ",
intval($uid),
intval($uid),
intval($uid),
$sql_network,
intval($start),
intval($limit)
);
$list = array();
foreach ($r2 AS $suggestion)
$list[$suggestion["nurl"]] = $suggestion;
foreach ($r AS $suggestion)
$list[$suggestion["nurl"]] = $suggestion;
return $list;
}
function update_suggestions() {
$a = get_app();
$done = array();
// To-Do: Check if it is really neccessary to poll the own server
poco_load(0,0,0,$a->get_baseurl() . '/poco');
$done[] = $a->get_baseurl() . '/poco';
if(strlen(get_config('system','directory_submit_url'))) {
$x = fetch_url('http://dir.friendica.com/pubsites');
if($x) {
$j = json_decode($x);
if($j->entries) {
foreach($j->entries as $entry) {
poco_check_server($entry->url);
$url = $entry->url . '/poco';
if(! in_array($url,$done))
poco_load(0,0,0,$entry->url . '/poco');
}
}
}
}
// Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
$r = q("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA)
);
if(count($r)) {
foreach($r as $rr) {
$base = substr($rr['poco'],0,strrpos($rr['poco'],'/'));
if(! in_array($base,$done))
poco_load(0,0,0,$base);
}
}
}
function poco_discover($complete = false) {
$no_of_queries = 5;
$last_update = date("c", time() - (60 * 60 * 6)); // 24
$last_update = date("c", time() - (60 * 60 * 24)); // 24
$r = q("SELECT `poco`, `nurl`, `url`, `network` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `poco` != '' AND `last_poco_query` < '%s' ORDER BY RAND()", dbesc($last_update));
if ($r)
foreach ($r AS $server) {
if (!poco_check_server($server["url"], $server["network"]))
continue;
// Fetch all users from the other server
$url = $server["poco"]."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
logger("Fetch all users from the server ".$server["nurl"], LOGGER_DEBUG);
$retdata = z_fetch_url($url);
if ($retdata["success"]) {
$data = json_decode($retdata["body"]);
poco_discover_server($data, 2);
if (get_config('system','poco_discovery') > 1) {
$timeframe = get_config('system','poco_discovery_since');
if ($timeframe == 0)
$timeframe = 30;
$updatedSince = date("Y-m-d H:i:s", time() - $timeframe * 86400);
// Fetch all global contacts from the other server (Not working with Redmatrix and Friendica versions before 3.3)
$url = $server["poco"]."/@global?updatedSince=".$updatedSince."&fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
$success = false;
$retdata = z_fetch_url($url);
if ($retdata["success"]) {
logger("Fetch all global contacts from the server ".$server["nurl"], LOGGER_DEBUG);
$success = poco_discover_server(json_decode($retdata["body"]));
}
if (!$success AND (get_config('system','poco_discovery') > 2)) {
logger("Fetch contacts from users of the server ".$server["nurl"], LOGGER_DEBUG);
poco_discover_server_users($data, $server);
}
}
q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
if (!$complete AND (--$no_of_queries == 0))
break;
} else // If the server hadn't replied correctly, then force a sanity check
poco_check_server($server["url"], $server["network"], true);
}
}
function poco_discover_server_users($data, $server) {
if (!isset($data->entry))
return;
foreach ($data->entry AS $entry) {
$username = "";
if (isset($entry->urls)) {
foreach($entry->urls as $url)
if($url->type == 'profile') {
$profile_url = $url->value;
$urlparts = parse_url($profile_url);
$username = end(explode("/", $urlparts["path"]));
}
}
if ($username != "") {
logger("Fetch contacts for the user ".$username." from the server ".$server["nurl"], LOGGER_DEBUG);
// Fetch all contacts from a given user from the other server
$url = $server["poco"]."/".$username."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
$retdata = z_fetch_url($url);
if ($retdata["success"])
poco_discover_server(json_decode($retdata["body"]), 3);
}
}
}
function poco_discover_server($data, $default_generation = 0) {
if (!isset($data->entry) OR !count($data->entry))
return false;
$success = false;
foreach ($data->entry AS $entry) {
$profile_url = '';
$profile_photo = '';
$connect_url = '';
$name = '';
$network = '';
$updated = '0000-00-00 00:00:00';
$location = '';
$about = '';
$keywords = '';
$gender = '';
$generation = $default_generation;
$name = $entry->displayName;
if(isset($entry->urls)) {
foreach($entry->urls as $url) {
if($url->type == 'profile') {
$profile_url = $url->value;
continue;
}
if($url->type == 'webfinger') {
$connect_url = str_replace('acct:' , '', $url->value);
continue;
}
}
}
if(isset($entry->photos)) {
foreach($entry->photos as $photo) {
if($photo->type == 'profile') {
$profile_photo = $photo->value;
continue;
}
}
}
if(isset($entry->updated))
$updated = date("Y-m-d H:i:s", strtotime($entry->updated));
if(isset($entry->network))
$network = $entry->network;
if(isset($entry->currentLocation))
$location = $entry->currentLocation;
if(isset($entry->aboutMe))
$about = html2bbcode($entry->aboutMe);
if(isset($entry->gender))
$gender = $entry->gender;
if(isset($entry->generation) AND ($entry->generation > 0))
$generation = ++$entry->generation;
if(isset($entry->tags))
foreach($entry->tags as $tag)
$keywords = implode(", ", $tag);
if ($generation > 0) {
$success = true;
logger("Store profile ".$profile_url, LOGGER_DEBUG);
poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, 0, 0, 0);
logger("Done for profile ".$profile_url, LOGGER_DEBUG);
}
}
return $success;
}
?>
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