<?php
/**
* @file src/Protocol/diaspora.php
* @brief The implementation of the diaspora protocol
*
* The new protocol is described here: http://diaspora.github.io/diaspora_federation/index.html
* This implementation here interprets the old and the new protocol and sends the new one.
* In the future we will remove most stuff from "validPosting" and interpret only the new protocol.
*/
namespace Friendica\Protocol;
use Friendica\Content\Text\BBCode;
use Friendica\Content\Text\Markdown;
use Friendica\Core\Cache;
use Friendica\Core\Config;
use Friendica\Core\L10n;
use Friendica\Core\PConfig;
use Friendica\Core\System;
use Friendica\Core\Worker;
use Friendica\Database\DBM;
use Friendica\Model\Contact;
use Friendica\Model\GContact;
use Friendica\Model\Group;
use Friendica\Model\Item;
use Friendica\Model\Profile;
use Friendica\Model\Queue;
use Friendica\Model\User;
use Friendica\Network\Probe;
use Friendica\Util\Crypto;
use Friendica\Util\DateTimeFormat;
use Friendica\Util\Network;
use Friendica\Util\XML;
use Friendica\Util\Map;
use dba;
use SimpleXMLElement;
require_once 'include/dba.php';
require_once 'include/items.php';
/**
* @brief This class contain functions to create and send Diaspora XML files
*
*/
class Diaspora
{
/**
* @brief Return a list of relay servers
*
* The list contains not only the official relays but also servers that we serve directly
*
* @param integer $item_id The id of the item that is sent
* @return array of relay servers
*/
public static function relayList($item_id)
{
$serverlist = [];
// Fetching relay servers
$serverdata = Config::get("system", "relay_server");
if ($serverdata != "") {
$servers = explode(",", $serverdata);
foreach ($servers as $server) {
$serverlist[$server] = trim($server);
}
}
if (Config::get("system", "relay_directly", false)) {
// Servers that want to get all content
$servers = dba::select('gserver', ['url'], ['relay-subscribe' => true, 'relay-scope' => 'all']);
while ($server = dba::fetch($servers)) {
$serverlist[$server['url']] = $server['url'];
}
// All tags of the current post
$condition = ['otype' => TERM_OBJ_POST, 'type' => TERM_HASHTAG, 'oid' => $item_id];
$tags = dba::select('term', ['term'], $condition);
$taglist = [];
while ($tag = dba::fetch($tags)) {
$taglist[] = $tag['term'];
}
// All servers who wants content with this tag
$tagserverlist = [];
if (!empty($taglist)) {
$tagserver = dba::select('gserver-tag', ['gserver-id'], ['tag' => $taglist]);
while ($server = dba::fetch($tagserver)) {
$tagserverlist[] = $server['gserver-id'];
}
}
// All adresses with the given id
if (!empty($tagserverlist)) {
$servers = dba::select('gserver', ['url'], ['relay-subscribe' => true, 'relay-scope' => 'tags', 'id' => $tagserverlist]);
while ($server = dba::fetch($servers)) {
$serverlist[$server['url']] = $server['url'];
}
}
}
// Now we are collecting all relay contacts
$contacts = [];
foreach ($serverlist as $server_url) {
// We don't send messages to ourselves
if (!link_compare($server_url, System::baseUrl())) {
$cid = self::getRelayContactId($server_url);
if (!is_bool($cid)) {
$contacts[] = $cid;
}
}
}
return $contacts;
}
/**
* @brief Return a contact for a given server address or creates a dummy entry
*
* @param string $server_url The url of the server
* @return array with the contact
*/
private static function getRelayContactId($server_url)
{
$batch = $server_url . '/receive/public';
$fields = ['batch', 'id', 'name', 'network', 'archive', 'blocked'];
// Fetch the relay contact
$condition = ['uid' => 0, 'network' => NETWORK_DIASPORA, 'batch' => $batch,
'contact-type' => ACCOUNT_TYPE_RELAY];
$contact = dba::selectFirst('contact', $fields, $condition);
// If there is nothing found, we check if there is some unmarked relay
// This code segment can be removed before the release 2018-05
if (!DBM::is_result($contact)) {
$condition = ['uid' => 0, 'network' => NETWORK_DIASPORA, 'batch' => $batch,
'name' => 'relay', 'nick' => 'relay', 'url' => $server_url];
$contact = dba::selectFirst('contact', $fields, $condition);
if (DBM::is_result($contact)) {
// Mark the relay account as a relay account
$fields = ['contact-type' => ACCOUNT_TYPE_RELAY];
dba::update('contact', $fields, ['id' => $contact['id']]);
}
}
if (DBM::is_result($contact)) {
if ($contact['archive'] || $contact['blocked']) {
return false;
}
return $contact;
} else {
$fields = ['uid' => 0, 'created' => DateTimeFormat::utcNow(),
'name' => 'relay', 'nick' => 'relay',
'url' => $server_url, 'nurl' => normalise_link($server_url),
'batch' => $batch, 'network' => NETWORK_DIASPORA,
'rel' => CONTACT_IS_FOLLOWER, 'blocked' => false,
'contact-type' => ACCOUNT_TYPE_RELAY,
'pending' => false, 'writable' => true];
dba::insert('contact', $fields);
$fields = ['batch', 'id', 'name', 'network'];
$contact = dba::selectFirst('contact', $fields, $condition);
if (DBM::is_result($contact)) {
return $contact;
}
}
// It should never happen that we arrive here
return [];
}
/**
* @brief Return a list of participating contacts for a thread
*
* This is used for the participation feature.
* One of the parameters is a contact array.
* This is done to avoid duplicates.
*
* @param integer $thread The id of the thread
* @param array $contacts The previously fetched contacts
*
* @return array of relay servers
*/
public static function participantsForThread($thread, $contacts)
{
$r = dba::p("SELECT `contact`.`batch`, `contact`.`id`, `contact`.`name`, `contact`.`network`,
`fcontact`.`batch` AS `fbatch`, `fcontact`.`network` AS `fnetwork` FROM `participation`
INNER JOIN `contact` ON `contact`.`id` = `participation`.`cid`
INNER JOIN `fcontact` ON `fcontact`.`id` = `participation`.`fid`
WHERE `participation`.`iid` = ?", $thread);
while ($contact = dba::fetch($r)) {
if (!empty($contact['fnetwork'])) {
$contact['network'] = $contact['fnetwork'];
}
unset($contact['fnetwork']);
if (empty($contact['batch']) && !empty($contact['fbatch'])) {
$contact['batch'] = $contact['fbatch'];
}
unset($contact['fbatch']);
$exists = false;
foreach ($contacts as $entry) {
if ($entry['batch'] == $contact['batch']) {
$exists = true;
}
}
if (!$exists) {
$contacts[] = $contact;
}
}
dba::close($r);
return $contacts;
}
/**
* @brief repairs a signature that was double encoded
*
* The function is unused at the moment. It was copied from the old implementation.
*
* @param string $signature The signature
* @param string $handle The handle of the signature owner
* @param integer $level This value is only set inside this function to avoid endless loops
*
* @return string the repaired signature
*/
private static function repairSignature($signature, $handle = "", $level = 1)
{
if ($signature == "") {
return ($signature);
}
if (base64_encode(base64_decode(base64_decode($signature))) == base64_decode($signature)) {
$signature = base64_decode($signature);
logger("Repaired double encoded signature from Diaspora/Hubzilla handle ".$handle." - level ".$level, LOGGER_DEBUG);
// Do a recursive call to be able to fix even multiple levels
if ($level < 10) {
$signature = self::repairSignature($signature, $handle, ++$level);
}
}
return($signature);
}
/**
* @brief verify the envelope and return the verified data
*
* @param string $envelope The magic envelope
*
* @return string verified data
*/
private static function verifyMagicEnvelope($envelope)
{
$basedom = XML::parseString($envelope);
if (!is_object($basedom)) {
logger("Envelope is no XML file");
return false;
}
$children = $basedom->children('http://salmon-protocol.org/ns/magic-env');
if (sizeof($children) == 0) {
logger("XML has no children");
return false;
}
$handle = "";
$data = base64url_decode($children->data);
$type = $children->data->attributes()->type[0];
$encoding = $children->encoding;
$alg = $children->alg;
$sig = base64url_decode($children->sig);
$key_id = $children->sig->attributes()->key_id[0];
if ($key_id != "") {
$handle = base64url_decode($key_id);
}
$b64url_data = base64url_encode($data);
$msg = str_replace(["\n", "\r", " ", "\t"], ["", "", "", ""], $b64url_data);
$signable_data = $msg.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
if ($handle == '') {
logger('No author could be decoded. Discarding. Message: ' . $envelope);
return false;
}
$key = self::key($handle);
if ($key == '') {
logger("Couldn't get a key for handle " . $handle . ". Discarding.");
return false;
}
$verify = Crypto::rsaVerify($signable_data, $sig, $key);
if (!$verify) {
logger('Message from ' . $handle . ' did not verify. Discarding.');
return false;
}
return $data;
}
/**
* @brief encrypts data via AES
*
* @param string $key The AES key
* @param string $iv The IV (is used for CBC encoding)
* @param string $data The data that is to be encrypted
*
* @return string encrypted data
*/
private static function aesEncrypt($key, $iv, $data)
{
return openssl_encrypt($data, 'aes-256-cbc', str_pad($key, 32, "\0"), OPENSSL_RAW_DATA, str_pad($iv, 16, "\0"));
}
/**
* @brief decrypts data via AES
*
* @param string $key The AES key
* @param string $iv The IV (is used for CBC encoding)
* @param string $encrypted The encrypted data
*
* @return string decrypted data
*/
private static function aesDecrypt($key, $iv, $encrypted)
{
return openssl_decrypt($encrypted, 'aes-256-cbc', str_pad($key, 32, "\0"), OPENSSL_RAW_DATA, str_pad($iv, 16, "\0"));
}
/**
* @brief: Decodes incoming Diaspora message in the new format
*
* @param array $importer Array of the importer user
* @param string $raw raw post message
*
* @return array
* 'message' -> decoded Diaspora XML message
* 'author' -> author diaspora handle
* 'key' -> author public key (converted to pkcs#8)
*/
public static function decodeRaw($importer, $raw)
{
$data = json_decode($raw);
// Is it a private post? Then decrypt the outer Salmon
if (is_object($data)) {
$encrypted_aes_key_bundle = base64_decode($data->aes_key);
$ciphertext = base64_decode($data->encrypted_magic_envelope);
$outer_key_bundle = '';
@openssl_private_decrypt($encrypted_aes_key_bundle, $outer_key_bundle, $importer['prvkey']);
$j_outer_key_bundle = json_decode($outer_key_bundle);
if (!is_object($j_outer_key_bundle)) {
logger('Outer Salmon did not verify. Discarding.');
System::httpExit(400);
}
$outer_iv = base64_decode($j_outer_key_bundle->iv);
$outer_key = base64_decode($j_outer_key_bundle->key);
$xml = self::aesDecrypt($outer_key, $outer_iv, $ciphertext);
} else {
$xml = $raw;
}
$basedom = XML::parseString($xml);
if (!is_object($basedom)) {
logger('Received data does not seem to be an XML. Discarding. '.$xml);
System::httpExit(400);
}
$base = $basedom->children(NAMESPACE_SALMON_ME);
// Not sure if this cleaning is needed
$data = str_replace([" ", "\t", "\r", "\n"], ["", "", "", ""], $base->data);
// Build the signed data
$type = $base->data[0]->attributes()->type[0];
$encoding = $base->encoding;
$alg = $base->alg;
$signed_data = $data.'.'.base64url_encode($type).'.'.base64url_encode($encoding).'.'.base64url_encode($alg);
// This is the signature
$signature = base64url_decode($base->sig);
// Get the senders' public key
$key_id = $base->sig[0]->attributes()->key_id[0];
$author_addr = base64_decode($key_id);
if ($author_addr == '') {
logger('No author could be decoded. Discarding. Message: ' . $xml);
System::httpExit(400);
}
$key = self::key($author_addr);
if ($key == '') {
logger("Couldn't get a key for handle " . $author_addr . ". Discarding.");
System::httpExit(400);
}
$verify = Crypto::rsaVerify($signed_data, $signature, $key);
if (!$verify) {
logger('Message did not verify. Discarding.');
System::httpExit(400);
}
return ['message' => (string)base64url_decode($base->data),
'author' => unxmlify($author_addr),
'key' => (string)$key];
}
/**
* @brief: Decodes incoming Diaspora message in the deprecated format
*
* @param array $importer Array of the importer user
* @param string $xml urldecoded Diaspora salmon
*
* @return array
* 'message' -> decoded Diaspora XML message
* 'author' -> author diaspora handle
* 'key' -> author public key (converted to pkcs#8)
*/
public static function decode($importer, $xml)
{
$public = false;
$basedom = XML::parseString($xml);
if (!is_object($basedom)) {
logger("XML is not parseable.");
return false;
}
$children = $basedom->children('https://joindiaspora.com/protocol');
$inner_aes_key = null;
$inner_iv = null;
if ($children->header) {
$public = true;
$author_link = str_replace('acct:', '', $children->header->author_id);
} else {
// This happens with posts from a relais
if (!$importer) {
logger("This is no private post in the old format", LOGGER_DEBUG);
return false;
}
$encrypted_header = json_decode(base64_decode($children->encrypted_header));
$encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
$ciphertext = base64_decode($encrypted_header->ciphertext);
$outer_key_bundle = '';
openssl_private_decrypt($encrypted_aes_key_bundle, $outer_key_bundle, $importer['prvkey']);
$j_outer_key_bundle = json_decode($outer_key_bundle);
$outer_iv = base64_decode($j_outer_key_bundle->iv);
$outer_key = base64_decode($j_outer_key_bundle->key);
$decrypted = self::aesDecrypt($outer_key, $outer_iv, $ciphertext);
logger('decrypted: '.$decrypted, LOGGER_DEBUG);
$idom = XML::parseString($decrypted);
$inner_iv = base64_decode($idom->iv);
$inner_aes_key = base64_decode($idom->aes_key);
$author_link = str_replace('acct:', '', $idom->author_id);
}
$dom = $basedom->children(NAMESPACE_SALMON_ME);
// figure out where in the DOM tree our data is hiding
$base = null;
if ($dom->provenance->data) {
$base = $dom->provenance;
} elseif ($dom->env->data) {
$base = $dom->env;
} elseif ($dom->data) {
$base = $dom;
}
if (!$base) {
logger('unable to locate salmon data in xml');
System::httpExit(400);
}
// Stash the signature away for now. We have to find their key or it won't be good for anything.
$signature = base64url_decode($base->sig);
// unpack the data
// strip whitespace so our data element will return to one big base64 blob
$data = str_replace([" ", "\t", "\r", "\n"], ["", "", "", ""], $base->data);
// stash away some other stuff for later
$type = $base->data[0]->attributes()->type[0];
$keyhash = $base->sig[0]->attributes()->keyhash[0];
$encoding = $base->encoding;
$alg = $base->alg;
$signed_data = $data.'.'.base64url_encode($type).'.'.base64url_encode($encoding).'.'.base64url_encode($alg);
// decode the data
$data = base64url_decode($data);
if ($public) {
$inner_decrypted = $data;
} else {
// Decode the encrypted blob
$inner_encrypted = base64_decode($data);
$inner_decrypted = self::aesDecrypt($inner_aes_key, $inner_iv, $inner_encrypted);
}
if (!$author_link) {
logger('Could not retrieve author URI.');
System::httpExit(400);
}
// Once we have the author URI, go to the web and try to find their public key
// (first this will look it up locally if it is in the fcontact cache)
// This will also convert diaspora public key from pkcs#1 to pkcs#8
logger('Fetching key for '.$author_link);
$key = self::key($author_link);
if (!$key) {
logger('Could not retrieve author key.');
System::httpExit(400);
}
$verify = Crypto::rsaVerify($signed_data, $signature, $key);
if (!$verify) {
logger('Message did not verify. Discarding.');
System::httpExit(400);
}
logger('Message verified.');
return ['message' => (string)$inner_decrypted,
'author' => unxmlify($author_link),
'key' => (string)$key];
}
/**
* @brief Dispatches public messages and find the fitting receivers
*
* @param array $msg The post that will be dispatched
*
* @return int The message id of the generated message, "true" or "false" if there was an error
*/
public static function dispatchPublic($msg)
{
$enabled = intval(Config::get("system", "diaspora_enabled"));
if (!$enabled) {
logger("diaspora is disabled");
return false;
}
if (!($postdata = self::validPosting($msg))) {
logger("Invalid posting");
return false;
}
$fields = $postdata['fields'];
// Is it a an action (comment, like, ...) for our own post?
if (isset($fields->parent_guid) && !$postdata["relayed"]) {
$guid = notags(unxmlify($fields->parent_guid));
$importer = self::importerForGuid($guid);
if (is_array($importer)) {
logger("delivering to origin: ".$importer["name"]);
$message_id = self::dispatch($importer, $msg, $fields);
return $message_id;
}
}
// Process item retractions. This has to be done separated from the other stuff,
// since retractions for comments could come even from non followers.
if (!empty($fields) && in_array($fields->getName(), ['retraction'])) {
$target = notags(unxmlify($fields->target_type));
if (in_array($target, ["Comment", "Like", "Post", "Reshare", "StatusMessage"])) {
logger('processing retraction for '.$target, LOGGER_DEBUG);
$importer = ["uid" => 0, "page-flags" => PAGE_FREELOVE];
$message_id = self::dispatch($importer, $msg, $fields);
return $message_id;
}
}
// Now distribute it to the followers
$r = q(
"SELECT `user`.* FROM `user` WHERE `user`.`uid` IN
(SELECT `contact`.`uid` FROM `contact` WHERE `contact`.`network` = '%s' AND `contact`.`addr` = '%s')
AND NOT `account_expired` AND NOT `account_removed`",
dbesc(NETWORK_DIASPORA),
dbesc($msg["author"])
);
if (DBM::is_result($r)) {
foreach ($r as $rr) {
logger("delivering to: ".$rr["username"]);
self::dispatch($rr, $msg, $fields);
}
} elseif (!Config::get('system', 'relay_subscribe', false)) {
logger("Unwanted message from ".$msg["author"]." send by ".$_SERVER["REMOTE_ADDR"]." with ".$_SERVER["HTTP_USER_AGENT"].": ".print_r($msg, true), LOGGER_DEBUG);
} else {
// Use a dummy importer to import the data for the public copy
$importer = ["uid" => 0, "page-flags" => PAGE_FREELOVE];
$message_id = self::dispatch($importer, $msg, $fields);
}
return $message_id;
}
/**
* @brief Dispatches the different message types to the different functions
*
* @param array $importer Array of the importer user
* @param array $msg The post that will be dispatched
* @param object $fields SimpleXML object that contains the message
*
* @return int The message id of the generated message, "true" or "false" if there was an error
*/
public static function dispatch($importer, $msg, $fields = null)
{
// The sender is the handle of the contact that sent the message.
// This will often be different with relayed messages (for example "like" and "comment")
$sender = $msg["author"];
// This is only needed for private postings since this is already done for public ones before
if (is_null($fields)) {
if (!($postdata = self::validPosting($msg))) {
logger("Invalid posting");
return false;
}
$fields = $postdata['fields'];
}
$type = $fields->getName();
logger("Received message type ".$type." from ".$sender." for user ".$importer["uid"], LOGGER_DEBUG);
switch ($type) {
case "account_migration":
return self::receiveAccountMigration($importer, $fields);
case "account_deletion":
return self::receiveAccountDeletion($importer, $fields);
case "comment":
return self::receiveComment($importer, $sender, $fields, $msg["message"]);
case "contact":
return self::receiveContactRequest($importer, $fields);
case "conversation":
return self::receiveConversation($importer, $msg, $fields);
case "like":
return self::receiveLike($importer, $sender, $fields);
case "message":
return self::receiveMessage($importer, $fields);
case "participation":
return self::receiveParticipation($importer, $fields);
case "photo": // Not implemented
return self::receivePhoto($importer, $fields);
case "poll_participation": // Not implemented
return self::receivePollParticipation($importer, $fields);
case "profile":
return self::receiveProfile($importer, $fields);
case "reshare":
return self::receiveReshare($importer, $fields, $msg["message"]);
case "retraction":
return self::receiveRetraction($importer, $sender, $fields);
case "status_message":
return self::receiveStatusMessage($importer, $fields, $msg["message"]);
default:
logger("Unknown message type ".$type);
return false;
}
return true;
}
/**
* @brief Checks if a posting is valid and fetches the data fields.
*
* This function does not only check the signature.
* It also does the conversion between the old and the new diaspora format.
*
* @param array $msg Array with the XML, the sender handle and the sender signature
*
* @return bool|array If the posting is valid then an array with an SimpleXML object is returned
*/
private static function validPosting($msg)
{
$data = XML::parseString($msg["message"]);
if (!is_object($data)) {
logger("No valid XML ".$msg["message"], LOGGER_DEBUG);
return false;
}
// Is this the new or the old version?
if ($data->getName() == "XML") {
$oldXML = true;
foreach ($data->post->children() as $child) {
$element = $child;
}
} else {
$oldXML = false;
$element = $data;
}
$type = $element->getName();
$orig_type = $type;
logger("Got message type ".$type.": ".$msg["message"], LOGGER_DATA);
// All retractions are handled identically from now on.
// In the new version there will only be "retraction".
if (in_array($type, ["signed_retraction", "relayable_retraction"]))
$type = "retraction";
if ($type == "request") {
$type = "contact";
}
$fields = new SimpleXMLElement("<".$type."/>");
$signed_data = "";
$author_signature = null;
$parent_author_signature = null;
foreach ($element->children() as $fieldname => $entry) {
if ($oldXML) {
// Translation for the old XML structure
if ($fieldname == "diaspora_handle") {
$fieldname = "author";
}
if ($fieldname == "participant_handles") {
$fieldname = "participants";
}
if (in_array($type, ["like", "participation"])) {
if ($fieldname == "target_type") {
$fieldname = "parent_type";
}
}
if ($fieldname == "sender_handle") {
$fieldname = "author";
}
if ($fieldname == "recipient_handle") {
$fieldname = "recipient";
}
if ($fieldname == "root_diaspora_id") {
$fieldname = "root_author";
}
if ($type == "status_message") {
if ($fieldname == "raw_message") {
$fieldname = "text";
}
}
if ($type == "retraction") {
if ($fieldname == "post_guid") {
$fieldname = "target_guid";
}
if ($fieldname == "type") {
$fieldname = "target_type";
}
}
}
if (($fieldname == "author_signature") && ($entry != "")) {
$author_signature = base64_decode($entry);
} elseif (($fieldname == "parent_author_signature") && ($entry != "")) {
$parent_author_signature = base64_decode($entry);
} elseif (!in_array($fieldname, ["author_signature", "parent_author_signature", "target_author_signature"])) {
if ($signed_data != "") {
$signed_data .= ";";
}
$signed_data .= $entry;
}
if (!in_array($fieldname, ["parent_author_signature", "target_author_signature"])
|| ($orig_type == "relayable_retraction")
) {
XML::copy($entry, $fields, $fieldname);
}
}
// This is something that shouldn't happen at all.
if (in_array($type, ["status_message", "reshare", "profile"])) {
if ($msg["author"] != $fields->author) {
logger("Message handle is not the same as envelope sender. Quitting this message.");
return false;
}
}
// Only some message types have signatures. So we quit here for the other types.
if (!in_array($type, ["comment", "like"])) {
return ["fields" => $fields, "relayed" => false];
}
// No author_signature? This is a must, so we quit.
if (!isset($author_signature)) {
logger("No author signature for type ".$type." - Message: ".$msg["message"], LOGGER_DEBUG);
return false;
}
if (isset($parent_author_signature)) {
$relayed = true;
$key = self::key($msg["author"]);
if (!Crypto::rsaVerify($signed_data, $parent_author_signature, $key, "sha256")) {
logger("No valid parent author signature for parent author ".$msg["author"]. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$parent_author_signature, LOGGER_DEBUG);
return false;
}
} else {
$relayed = false;
}
$key = self::key($fields->author);
if (!Crypto::rsaVerify($signed_data, $author_signature, $key, "sha256")) {
logger("No valid author signature for author ".$fields->author. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$author_signature, LOGGER_DEBUG);
return false;
} else {
return ["fields" => $fields, "relayed" => $relayed];
}
}
/**
* @brief Fetches the public key for a given handle
*
* @param string $handle The handle
*
* @return string The public key
*/
private static function key($handle)
{
$handle = strval($handle);
logger("Fetching diaspora key for: ".$handle);
$r = self::personByHandle($handle);
if ($r) {
return $r["pubkey"];
}
return "";
}
/**
* @brief Fetches data for a given handle
*
* @param string $handle The handle
*
* @return array the queried data
*/
public static function personByHandle($handle)
{
$update = false;
$person = dba::selectFirst('fcontact', [], ['network' => NETWORK_DIASPORA, 'addr' => $handle]);
if (DBM::is_result($person)) {
logger("In cache " . print_r($person, true), LOGGER_DEBUG);
// update record occasionally so it doesn't get stale
$d = strtotime($person["updated"]." +00:00");
if ($d < strtotime("now - 14 days")) {
$update = true;
}
if ($person["guid"] == "") {
$update = true;
}
}
if (!DBM::is_result($person) || $update) {
logger("create or refresh", LOGGER_DEBUG);
$r = Probe::uri($handle, NETWORK_DIASPORA);
// Note that Friendica contacts will return a "Diaspora person"
// if Diaspora connectivity is enabled on their server
if ($r && ($r["network"] === NETWORK_DIASPORA)) {
self::addFContact($r, $update);
// Fetch the updated or added contact
$person = dba::selectFirst('fcontact', [], ['network' => NETWORK_DIASPORA, 'addr' => $handle]);
if (!DBM::is_result($person)) {
$person = $r;
}
}
}
return $person;
}
/**
* @brief Updates the fcontact table
*
* @param array $arr The fcontact data
* @param bool $update Update or insert?
*
* @return string The id of the fcontact entry
*/
private static function addFContact($arr, $update = false)
{
if ($update) {
$r = q(
"UPDATE `fcontact` SET
`name` = '%s',
`photo` = '%s',
`request` = '%s',
`nick` = '%s',
`addr` = '%s',
`guid` = '%s',
`batch` = '%s',
`notify` = '%s',
`poll` = '%s',
`confirm` = '%s',
`alias` = '%s',
`pubkey` = '%s',
`updated` = '%s'
WHERE `url` = '%s' AND `network` = '%s'",
dbesc($arr["name"]),
dbesc($arr["photo"]),
dbesc($arr["request"]),
dbesc($arr["nick"]),
dbesc(strtolower($arr["addr"])),
dbesc($arr["guid"]),
dbesc($arr["batch"]),
dbesc($arr["notify"]),
dbesc($arr["poll"]),
dbesc($arr["confirm"]),
dbesc($arr["alias"]),
dbesc($arr["pubkey"]),
dbesc(DateTimeFormat::utcNow()),
dbesc($arr["url"]),
dbesc($arr["network"])
);
} else {
$r = q(
"INSERT INTO `fcontact` (`url`,`name`,`photo`,`request`,`nick`,`addr`, `guid`,
`batch`, `notify`,`poll`,`confirm`,`network`,`alias`,`pubkey`,`updated`)
VALUES ('%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s')",
dbesc($arr["url"]),
dbesc($arr["name"]),
dbesc($arr["photo"]),
dbesc($arr["request"]),
dbesc($arr["nick"]),
dbesc($arr["addr"]),
dbesc($arr["guid"]),
dbesc($arr["batch"]),
dbesc($arr["notify"]),
dbesc($arr["poll"]),
dbesc($arr["confirm"]),
dbesc($arr["network"]),
dbesc($arr["alias"]),
dbesc($arr["pubkey"]),
dbesc(DateTimeFormat::utcNow())
);
}
return $r;
}
/**
* @brief get a handle (user@domain.tld) from a given contact id
*
* @param int $contact_id The id in the contact table
* @param int $pcontact_id The id in the contact table (Used for the public contact)
*
* @return string the handle
*/
private static function handleFromContact($contact_id, $pcontact_id = 0)
{
$handle = false;
logger("contact id is ".$contact_id." - pcontact id is ".$pcontact_id, LOGGER_DEBUG);
if ($pcontact_id != 0) {
$r = q(
"SELECT `addr` FROM `contact` WHERE `id` = %d AND `addr` != ''",
intval($pcontact_id)
);
if (DBM::is_result($r)) {
return strtolower($r[0]["addr"]);
}
}
$r = q(
"SELECT `network`, `addr`, `self`, `url`, `nick` FROM `contact` WHERE `id` = %d",
intval($contact_id)
);
if (DBM::is_result($r)) {
$contact = $r[0];
logger("contact 'self' = ".$contact['self']." 'url' = ".$contact['url'], LOGGER_DEBUG);
if ($contact['addr'] != "") {
$handle = $contact['addr'];
} else {
$baseurl_start = strpos($contact['url'], '://') + 3;
// allows installations in a subdirectory--not sure how Diaspora will handle
$baseurl_length = strpos($contact['url'], '/profile') - $baseurl_start;
$baseurl = substr($contact['url'], $baseurl_start, $baseurl_length);
$handle = $contact['nick'].'@'.$baseurl;
}
}
return strtolower($handle);
}
/**
* @brief get a url (scheme://domain.tld/u/user) from a given Diaspora*
* fcontact guid
*
* @param mixed $fcontact_guid Hexadecimal string guid
*
* @return string the contact url or null
*/
public static function urlFromContactGuid($fcontact_guid)
{
logger("fcontact guid is ".$fcontact_guid, LOGGER_DEBUG);
$r = q(
"SELECT `url` FROM `fcontact` WHERE `url` != '' AND `network` = '%s' AND `guid` = '%s'",
dbesc(NETWORK_DIASPORA),
dbesc($fcontact_guid)
);
if (DBM::is_result($r)) {
return $r[0]['url'];
}
return null;
}
/**
* @brief Get a contact id for a given handle
*
* @todo Move to Friendica\Model\Contact
*
* @param int $uid The user id
* @param string $handle The handle in the format user@domain.tld
*
* @return int Contact id
*/
private static function contactByHandle($uid, $handle)
{
// First do a direct search on the contact table
$r = q(
"SELECT * FROM `contact` WHERE `uid` = %d AND `addr` = '%s' LIMIT 1",
intval($uid),
dbesc($handle)
);
if (DBM::is_result($r)) {
return $r[0];
} else {
/*
* We haven't found it?
* We use another function for it that will possibly create a contact entry.
*/
$cid = Contact::getIdForURL($handle, $uid);
if ($cid > 0) {
/// @TODO Contact retrieval should be encapsulated into an "entity" class like `Contact`
$r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1", intval($cid));
if (DBM::is_result($r)) {
return $r[0];
}
}
}
$handle_parts = explode("@", $handle);
$nurl_sql = "%%://".$handle_parts[1]."%%/profile/".$handle_parts[0];
$r = q(
"SELECT * FROM `contact` WHERE `network` = '%s' AND `uid` = %d AND `nurl` LIKE '%s' LIMIT 1",
dbesc(NETWORK_DFRN),
intval($uid),
dbesc($nurl_sql)
);
if (DBM::is_result($r)) {
return $r[0];
}
logger("Haven't found contact for user ".$uid." and handle ".$handle, LOGGER_DEBUG);
return false;
}
/**
* @brief Check if posting is allowed for this contact
*
* @param array $importer Array of the importer user
* @param array $contact The contact that is checked
* @param bool $is_comment Is the check for a comment?
*
* @return bool is the contact allowed to post?
*/
private static function postAllow($importer, $contact, $is_comment = false)
{
/*
* Perhaps we were already sharing with this person. Now they're sharing with us.
* That makes us friends.
* Normally this should have handled by getting a request - but this could get lost
*/
// It is deactivated by now, due to side effects. See issue https://github.com/friendica/friendica/pull/4033
// It is not removed by now. Possibly the code is needed?
//if (!$is_comment && $contact["rel"] == CONTACT_IS_FOLLOWER && in_array($importer["page-flags"], array(PAGE_FREELOVE))) {
// dba::update(
// 'contact',
// array('rel' => CONTACT_IS_FRIEND, 'writable' => true),
// array('id' => $contact["id"], 'uid' => $contact["uid"])
// );
//
// $contact["rel"] = CONTACT_IS_FRIEND;
// logger("defining user ".$contact["nick"]." as friend");
//}
// We don't seem to like that person
if ($contact["blocked"] || $contact["readonly"]) {
// Maybe blocked, don't accept.
return false;
// We are following this person?
} elseif (($contact["rel"] == CONTACT_IS_SHARING) || ($contact["rel"] == CONTACT_IS_FRIEND)) {
// Yes, then it is fine.
return true;
// Is it a post to a community?
} elseif (($contact["rel"] == CONTACT_IS_FOLLOWER) && ($importer["page-flags"] == PAGE_COMMUNITY)) {
// That's good
return true;
// Is the message a global user or a comment?
} elseif (($importer["uid"] == 0) || $is_comment) {
// Messages for the global users and comments are always accepted
return true;
}
return false;
}
/**
* @brief Fetches the contact id for a handle and checks if posting is allowed
*
* @param array $importer Array of the importer user
* @param string $handle The checked handle in the format user@domain.tld
* @param bool $is_comment Is the check for a comment?
*
* @return array The contact data
*/
private static function allowedContactByHandle($importer, $handle, $is_comment = false)
{
$contact = self::contactByHandle($importer["uid"], $handle);
if (!$contact) {
logger("A Contact for handle ".$handle." and user ".$importer["uid"]." was not found");
// If a contact isn't found, we accept it anyway if it is a comment
if ($is_comment) {
return $importer;
} else {
return false;
}
}
if (!self::postAllow($importer, $contact, $is_comment)) {
logger("The handle: ".$handle." is not allowed to post to user ".$importer["uid"]);
return false;
}
return $contact;
}
/**
* @brief Does the message already exists on the system?
*
* @param int $uid The user id
* @param string $guid The guid of the message
*
* @return int|bool message id if the message already was stored into the system - or false.
*/
private static function messageExists($uid, $guid)
{
$r = q(
"SELECT `id` FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
intval($uid),
dbesc($guid)
);
if (DBM::is_result($r)) {
logger("message ".$guid." already exists for user ".$uid);
return $r[0]["id"];
}
return false;
}
/**
* @brief Checks for links to posts in a message
*
* @param array $item The item array
* @return void
*/
private static function fetchGuid($item)
{
$expression = "=diaspora://.*?/post/([0-9A-Za-z\-_@.:]{15,254}[0-9A-Za-z])=ism";
preg_replace_callback(
$expression,
function ($match) use ($item) {
self::fetchGuidSub($match, $item);
},
$item["body"]
);
preg_replace_callback(
"&\[url=/posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
function ($match) use ($item) {
self::fetchGuidSub($match, $item);
},
$item["body"]
);
}
/**
* @brief Checks for relative /people/* links in an item body to match local
* contacts or prepends the remote host taken from the author link.
*
* @param string $body The item body to replace links from
* @param string $author_link The author link for missing local contact fallback
*
* @return string the replaced string
*/
public static function replacePeopleGuid($body, $author_link)
{
$return = preg_replace_callback(
"&\[url=/people/([^\[\]]*)\](.*)\[\/url\]&Usi",
function ($match) use ($author_link) {
// $match
// 0 => '[url=/people/0123456789abcdef]Foo Bar[/url]'
// 1 => '0123456789abcdef'
// 2 => 'Foo Bar'
$handle = self::urlFromContactGuid($match[1]);
if ($handle) {
$return = '@[url='.$handle.']'.$match[2].'[/url]';
} else {
// No local match, restoring absolute remote URL from author scheme and host
$author_url = parse_url($author_link);
$return = '[url='.$author_url['scheme'].'://'.$author_url['host'].'/people/'.$match[1].']'.$match[2].'[/url]';
}
return $return;
},
$body
);
return $return;
}
/**
* @brief sub function of "fetchGuid" which checks for links in messages
*
* @param array $match array containing a link that has to be checked for a message link
* @param array $item The item array
* @return void
*/
private static function fetchGuidSub($match, $item)
{
if (!self::storeByGuid($match[1], $item["author-link"])) {
self::storeByGuid($match[1], $item["owner-link"]);
}
}
/**
* @brief Fetches an item with a given guid from a given server
*
* @param string $guid the message guid
* @param string $server The server address
* @param int $uid The user id of the user
*
* @return int the message id of the stored message or false
*/
private static function storeByGuid($guid, $server, $uid = 0)
{
$serverparts = parse_url($server);
$server = $serverparts["scheme"]."://".$serverparts["host"];
logger("Trying to fetch item ".$guid." from ".$server, LOGGER_DEBUG);
$msg = self::message($guid, $server);
if (!$msg) {
return false;
}
logger("Successfully fetched item ".$guid." from ".$server, LOGGER_DEBUG);
// Now call the dispatcher
return self::dispatchPublic($msg);
}
/**
* @brief Fetches a message from a server
*
* @param string $guid message guid
* @param string $server The url of the server
* @param int $level Endless loop prevention
*
* @return array
* 'message' => The message XML
* 'author' => The author handle
* 'key' => The public key of the author
*/
private static function message($guid, $server, $level = 0)
{
if ($level > 5) {
return false;
}
// This will work for new Diaspora servers and Friendica servers from 3.5
$source_url = $server."/fetch/post/".urlencode($guid);
logger("Fetch post from ".$source_url, LOGGER_DEBUG);
$envelope = Network::fetchUrl($source_url);
if ($envelope) {
logger("Envelope was fetched.", LOGGER_DEBUG);
$x = self::verifyMagicEnvelope($envelope);
if (!$x) {
logger("Envelope could not be verified.", LOGGER_DEBUG);
} else {
logger("Envelope was verified.", LOGGER_DEBUG);
}
} else {
$x = false;
}
// This will work for older Diaspora and Friendica servers
if (!$x) {
$source_url = $server."/p/".urlencode($guid).".xml";
logger("Fetch post from ".$source_url, LOGGER_DEBUG);
$x = Network::fetchUrl($source_url);
if (!$x) {
return false;
}
}
$source_xml = XML::parseString($x);
if (!is_object($source_xml)) {
return false;
}
if ($source_xml->post->reshare) {
// Reshare of a reshare - old Diaspora version
logger("Message is a reshare", LOGGER_DEBUG);
return self::message($source_xml->post->reshare->root_guid, $server, ++$level);
} elseif ($source_xml->getName() == "reshare") {
// Reshare of a reshare - new Diaspora version
logger("Message is a new reshare", LOGGER_DEBUG);
return self::message($source_xml->root_guid, $server, ++$level);
}
$author = "";
// Fetch the author - for the old and the new Diaspora version
if ($source_xml->post->status_message->diaspora_handle) {
$author = (string)$source_xml->post->status_message->diaspora_handle;
} elseif ($source_xml->author && ($source_xml->getName() == "status_message")) {
$author = (string)$source_xml->author;
}
// If this isn't a "status_message" then quit
if (!$author) {
logger("Message doesn't seem to be a status message", LOGGER_DEBUG);
return false;
}
$msg = ["message" => $x, "author" => $author];
$msg["key"] = self::key($msg["author"]);
return $msg;
}
/**
* @brief Fetches the item record of a given guid
*
* @param int $uid The user id
* @param string $guid message guid
* @param string $author The handle of the item
* @param array $contact The contact of the item owner
*
* @return array the item record
*/
private static function parentItem($uid, $guid, $author, $contact)
{
$r = q(
"SELECT `id`, `parent`, `body`, `wall`, `uri`, `guid`, `private`, `origin`,
`author-name`, `author-link`, `author-avatar`,
`owner-name`, `owner-link`, `owner-avatar`
FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
intval($uid),
dbesc($guid)
);
if (!$r) {
$result = self::storeByGuid($guid, $contact["url"], $uid);
if (!$result) {
$person = self::personByHandle($author);
$result = self::storeByGuid($guid, $person["url"], $uid);
}
if ($result) {
logger("Fetched missing item ".$guid." - result: ".$result, LOGGER_DEBUG);
$r = q(
"SELECT `id`, `body`, `wall`, `uri`, `private`, `origin`,
`author-name`, `author-link`, `author-avatar`,
`owner-name`, `owner-link`, `owner-avatar`
FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
intval($uid),
dbesc($guid)
);
}
}
if (!$r) {
logger("parent item not found: parent: ".$guid." - user: ".$uid);
return false;
} else {
logger("parent item found: parent: ".$guid." - user: ".$uid);
return $r[0];
}
}
/**
* @brief returns contact details
*
* @param array $def_contact The default contact if the person isn't found
* @param array $person The record of the person
* @param int $uid The user id
*
* @return array
* 'cid' => contact id
* 'network' => network type
*/
private static function authorContactByUrl($def_contact, $person, $uid)
{
$condition = ['nurl' => normalise_link($person["url"]), 'uid' => $uid];
$contact = dba::selectFirst('contact', ['id', 'network'], $condition);
if (DBM::is_result($contact)) {
$cid = $contact["id"];
$network = $contact["network"];
} else {
$cid = $def_contact["id"];
$network = NETWORK_DIASPORA;
}
return ["cid" => $cid, "network" => $network];
}
/**
* @brief Is the profile a hubzilla profile?
*
* @param string $url The profile link
*
* @return bool is it a hubzilla server?
*/
public static function isRedmatrix($url)
{
return(strstr($url, "/channel/"));
}
/**
* @brief Generate a post link with a given handle and message guid
*
* @param string $addr The user handle
* @param string $guid message guid
* @param string $parent_guid optional parent guid
*
* @return string the post link
*/
private static function plink($addr, $guid, $parent_guid = '')
{
$r = q("SELECT `url`, `nick`, `network` FROM `fcontact` WHERE `addr`='%s' LIMIT 1", dbesc($addr));
// Fallback
if (!DBM::is_result($r)) {
if ($parent_guid != '') {
return "https://".substr($addr, strpos($addr, "@") + 1) . "/posts/" . $parent_guid . "#" . $guid;
} else {
return "https://".substr($addr, strpos($addr, "@") + 1) . "/posts/" . $guid;
}
}
// Friendica contacts are often detected as Diaspora contacts in the "fcontact" table
// So we try another way as well.
$s = q("SELECT `network` FROM `gcontact` WHERE `nurl`='%s' LIMIT 1", dbesc(normalise_link($r[0]["url"])));
if (DBM::is_result($s)) {
$r[0]["network"] = $s[0]["network"];
}
if ($r[0]["network"] == NETWORK_DFRN) {
return str_replace("/profile/".$r[0]["nick"]."/", "/display/".$guid, $r[0]["url"]."/");
}
if (self::isRedmatrix($r[0]["url"])) {
return $r[0]["url"]."/?f=&mid=".$guid;
}
if ($parent_guid != '') {
return "https://".substr($addr, strpos($addr, "@") + 1) . "/posts/" . $parent_guid . "#" . $guid;
} else {
return "https://".substr($addr, strpos($addr, "@") + 1) . "/posts/" . $guid;
}
}
/**
* @brief Receives account migration
*
* @param array $importer Array of the importer user
* @param object $data The message object
*
* @return bool Success
*/
private static function receiveAccountMigration($importer, $data)
{
$old_handle = notags(unxmlify($data->author));
$new_handle = notags(unxmlify($data->profile->author));
$signature = notags(unxmlify($data->signature));
$contact = self::contactByHandle($importer["uid"], $old_handle);
if (!$contact) {
logger("cannot find contact for sender: ".$old_handle." and user ".$importer["uid"]);
return false;
}
logger("Got migration for ".$old_handle.", to ".$new_handle." with user ".$importer["uid"]);
// Check signature
$signed_text = 'AccountMigration:'.$old_handle.':'.$new_handle;
$key = self::key($old_handle);
if (!Crypto::rsaVerify($signed_text, $signature, $key, "sha256")) {
logger('No valid signature for migration.');
return false;
}
// Update the profile
self::receiveProfile($importer, $data->profile);
// change the technical stuff in contact and gcontact
$data = Probe::uri($new_handle);
if ($data['network'] == NETWORK_PHANTOM) {
logger('Account for '.$new_handle." couldn't be probed.");
return false;
}
$fields = ['url' => $data['url'], 'nurl' => normalise_link($data['url']),
'name' => $data['name'], 'nick' => $data['nick'],
'addr' => $data['addr'], 'batch' => $data['batch'],
'notify' => $data['notify'], 'poll' => $data['poll'],
'network' => $data['network']];
dba::update('contact', $fields, ['addr' => $old_handle]);
$fields = ['url' => $data['url'], 'nurl' => normalise_link($data['url']),
'name' => $data['name'], 'nick' => $data['nick'],
'addr' => $data['addr'], 'connect' => $data['addr'],
'notify' => $data['notify'], 'photo' => $data['photo'],
'server_url' => $data['baseurl'], 'network' => $data['network']];
dba::update('gcontact', $fields, ['addr' => $old_handle]);
logger('Contacts are updated.');
// update items
/// @todo This is an extreme performance killer
$fields = [
'owner-link' => [$contact["url"], $data["url"]],
'author-link' => [$contact["url"], $data["url"]],
];
foreach ($fields as $n => $f) {
$r = q(
"SELECT `id` FROM `item` WHERE `%s` = '%s' AND `uid` = %d LIMIT 1",
$n,
dbesc($f[0]),
intval($importer["uid"])
);
if (DBM::is_result($r)) {
$x = q(
"UPDATE `item` SET `%s` = '%s' WHERE `%s` = '%s' AND `uid` = %d",
$n,
dbesc($f[1]),
$n,
dbesc($f[0]),
intval($importer["uid"])
);
if ($x === false) {
return false;
}
}
}
logger('Items are updated.');
return true;
}
/**
* @brief Processes an account deletion
*
* @param array $importer Array of the importer user
* @param object $data The message object
*
* @return bool Success
*/
private static function receiveAccountDeletion($importer, $data)
{
/// @todo Account deletion should remove the contact from the global contacts as well
$author = notags(unxmlify($data->author));
$contact = self::contactByHandle($importer["uid"], $author);
if (!$contact) {
logger("cannot find contact for author: ".$author);
return false;
}
// We now remove the contact
Contact::remove($contact["id"]);
return true;
}
/**
* @brief Fetch the uri from our database if we already have this item (maybe from ourselves)
*
* @param string $author Author handle
* @param string $guid Message guid
* @param boolean $onlyfound Only return uri when found in the database
*
* @return string The constructed uri or the one from our database
*/
private static function getUriFromGuid($author, $guid, $onlyfound = false)
{
$r = q("SELECT `uri` FROM `item` WHERE `guid` = '%s' LIMIT 1", dbesc($guid));
if (DBM::is_result($r)) {
return $r[0]["uri"];
} elseif (!$onlyfound) {
return $author.":".$guid;
}
return "";
}
/**
* @brief Fetch the guid from our database with a given uri
*
* @param string $uri Message uri
* @param string $uid Author handle
*
* @return string The post guid
*/
private static function getGuidFromUri($uri, $uid)
{
$r = q("SELECT `guid` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1", dbesc($uri), intval($uid));
if (DBM::is_result($r)) {
return $r[0]["guid"];
} else {
return false;
}
}
/**
* @brief Find the best importer for a comment, like, ...
*
* @param string $guid The guid of the item
*
* @return array|boolean the origin owner of that post - or false
*/
private static function importerForGuid($guid)
{
$item = dba::fetch_first("SELECT `uid` FROM `item` WHERE `origin` AND `guid` = ? LIMIT 1", $guid);
if (DBM::is_result($item)) {
logger("Found user ".$item['uid']." as owner of item ".$guid, LOGGER_DEBUG);
$contact = dba::fetch_first("SELECT * FROM `contact` WHERE `self` AND `uid` = ?", $item['uid']);
if (DBM::is_result($contact)) {
return $contact;
}
}
return false;
}
/**
* @brief Processes an incoming comment
*
* @param array $importer Array of the importer user
* @param string $sender The sender of the message
* @param object $data The message object
* @param string $xml The original XML of the message
*
* @return int The message id of the generated comment or "false" if there was an error
*/
private static function receiveComment($importer, $sender, $data, $xml)
{
$author = notags(unxmlify($data->author));
$guid = notags(unxmlify($data->guid));
$parent_guid = notags(unxmlify($data->parent_guid));
$text = unxmlify($data->text);
if (isset($data->created_at)) {
$created_at = DateTimeFormat::utc(notags(unxmlify($data->created_at)));
} else {
$created_at = DateTimeFormat::utcNow();
}
if (isset($data->thread_parent_guid)) {
$thread_parent_guid = notags(unxmlify($data->thread_parent_guid));
$thr_uri = self::getUriFromGuid("", $thread_parent_guid, true);
} else {
$thr_uri = "";
}
$contact = self::allowedContactByHandle($importer, $sender, true);
if (!$contact) {
return false;
}
$message_id = self::messageExists($importer["uid"], $guid);
if ($message_id) {
return true;
}
$parent_item = self::parentItem($importer["uid"], $parent_guid, $author, $contact);
if (!$parent_item) {
return false;
}
$person = self::personByHandle($author);
if (!is_array($person)) {
logger("unable to find author details");
return false;
}
// Fetch the contact id - if we know this contact
$author_contact = self::authorContactByUrl($contact, $person, $importer["uid"]);
$datarray = [];
$datarray["uid"] = $importer["uid"];
$datarray["contact-id"] = $author_contact["cid"];
$datarray["network"] = $author_contact["network"];
$datarray["author-name"] = $person["name"];
$datarray["author-link"] = $person["url"];
$datarray["author-avatar"] = ((x($person, "thumb")) ? $person["thumb"] : $person["photo"]);
$datarray["owner-name"] = $contact["name"];
$datarray["owner-link"] = $contact["url"];
$datarray["owner-avatar"] = ((x($contact, "thumb")) ? $contact["thumb"] : $contact["photo"]);
$datarray["guid"] = $guid;
$datarray["uri"] = self::getUriFromGuid($author, $guid);
$datarray["type"] = "remote-comment";
$datarray["verb"] = ACTIVITY_POST;
$datarray["gravity"] = GRAVITY_COMMENT;
if ($thr_uri != "") {
$datarray["parent-uri"] = $thr_uri;
} else {
$datarray["parent-uri"] = $parent_item["uri"];
}
$datarray["object-type"] = ACTIVITY_OBJ_COMMENT;
$datarray["protocol"] = PROTOCOL_DIASPORA;
$datarray["source"] = $xml;
$datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
$datarray["plink"] = self::plink($author, $guid, $parent_item['guid']);
$body = Markdown::toBBCode($text);
$datarray["body"] = self::replacePeopleGuid($body, $person["url"]);
self::fetchGuid($datarray);
$message_id = Item::insert($datarray);
if ($message_id <= 0) {
return false;
}
if ($message_id) {
logger("Stored comment ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
}
// If we are the origin of the parent we store the original data and notify our followers
if ($message_id && $parent_item["origin"]) {
// Formerly we stored the signed text, the signature and the author in different fields.
// We now store the raw data so that we are more flexible.
dba::insert('sign', ['iid' => $message_id, 'signed_text' => json_encode($data)]);
// notify others
Worker::add(PRIORITY_HIGH, "Notifier", "comment-import", $message_id);
}
return true;
}
/**
* @brief processes and stores private messages
*
* @param array $importer Array of the importer user
* @param array $contact The contact of the message
* @param object $data The message object
* @param array $msg Array of the processed message, author handle and key
* @param object $mesg The private message
* @param array $conversation The conversation record to which this message belongs
*
* @return bool "true" if it was successful
*/
private static function receiveConversationMessage($importer, $contact, $data, $msg, $mesg, $conversation)
{
$author = notags(unxmlify($data->author));
$guid = notags(unxmlify($data->guid));
$subject = notags(unxmlify($data->subject));
// "diaspora_handle" is the element name from the old version
// "author" is the element name from the new version
if ($mesg->author) {
$msg_author = notags(unxmlify($mesg->author));
} elseif ($mesg->diaspora_handle) {
$msg_author = notags(unxmlify($mesg->diaspora_handle));
} else {
return false;
}
$msg_guid = notags(unxmlify($mesg->guid));
$msg_conversation_guid = notags(unxmlify($mesg->conversation_guid));
$msg_text = unxmlify($mesg->text);
$msg_created_at = DateTimeFormat::utc(notags(unxmlify($mesg->created_at)));
if ($msg_conversation_guid != $guid) {
logger("message conversation guid does not belong to the current conversation.");
return false;
}
$body = Markdown::toBBCode($msg_text);
$message_uri = $msg_author.":".$msg_guid;
$person = self::personByHandle($msg_author);
dba::lock('mail');
$r = q(
"SELECT `id` FROM `mail` WHERE `guid` = '%s' AND `uid` = %d LIMIT 1",
dbesc($msg_guid),
intval($importer["uid"])
);
if (DBM::is_result($r)) {
logger("duplicate message already delivered.", LOGGER_DEBUG);
return false;
}
q(
"INSERT INTO `mail` (`uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`)
VALUES (%d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
intval($importer["uid"]),
dbesc($msg_guid),
intval($conversation["id"]),
dbesc($person["name"]),
dbesc($person["photo"]),
dbesc($person["url"]),
intval($contact["id"]),
dbesc($subject),
dbesc($body),
0,
0,
dbesc($message_uri),
dbesc($author.":".$guid),
dbesc($msg_created_at)
);
dba::unlock();
dba::update('conv', ['updated' => DateTimeFormat::utcNow()], ['id' => $conversation["id"]]);
notification(
[
"type" => NOTIFY_MAIL,
"notify_flags" => $importer["notify-flags"],
"language" => $importer["language"],
"to_name" => $importer["username"],
"to_email" => $importer["email"],
"uid" =>$importer["uid"],
"item" => ["subject" => $subject, "body" => $body],
"source_name" => $person["name"],
"source_link" => $person["url"],
"source_photo" => $person["thumb"],
"verb" => ACTIVITY_POST,
"otype" => "mail"]
);
return true;
}
/**
* @brief Processes new private messages (answers to private messages are processed elsewhere)
*
* @param array $importer Array of the importer user
* @param array $msg Array of the processed message, author handle and key
* @param object $data The message object
*
* @return bool Success
*/
private static function receiveConversation($importer, $msg, $data)
{
$author = notags(unxmlify($data->author));
$guid = notags(unxmlify($data->guid));
$subject = notags(unxmlify($data->subject));
$created_at = DateTimeFormat::utc(notags(unxmlify($data->created_at)));
$participants = notags(unxmlify($data->participants));
$messages = $data->message;
if (!count($messages)) {
logger("empty conversation");
return false;
}
$contact = self::allowedContactByHandle($importer, $msg["author"], true);
if (!$contact) {
return false;
}
$conversation = null;
$c = q(
"SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
intval($importer["uid"]),
dbesc($guid)
);
if ($c)
$conversation = $c[0];
else {
$r = q(
"INSERT INTO `conv` (`uid`, `guid`, `creator`, `created`, `updated`, `subject`, `recips`)
VALUES (%d, '%s', '%s', '%s', '%s', '%s', '%s')",
intval($importer["uid"]),
dbesc($guid),
dbesc($author),
dbesc($created_at),
dbesc(DateTimeFormat::utcNow()),
dbesc($subject),
dbesc($participants)
);
if ($r) {
$c = q(
"SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
intval($importer["uid"]),
dbesc($guid)
);
}
if ($c) {
$conversation = $c[0];
}
}
if (!$conversation) {
logger("unable to create conversation.");
return false;
}
foreach ($messages as $mesg) {
self::receiveConversationMessage($importer, $contact, $data, $msg, $mesg, $conversation);
}
return true;
}
/**
* @brief Creates the body for a "like" message
*
* @param array $contact The contact that send us the "like"
* @param array $parent_item The item array of the parent item
* @param string $guid message guid
*
* @return string the body
*/
private static function constructLikeBody($contact, $parent_item, $guid)
{
$bodyverb = L10n::t('%1$s likes %2$s\'s %3$s');
$ulink = "[url=".$contact["url"]."]".$contact["name"]."[/url]";
$alink = "[url=".$parent_item["author-link"]."]".$parent_item["author-name"]."[/url]";
$plink = "[url=".System::baseUrl()."/display/".urlencode($guid)."]".L10n::t("status")."[/url]";
return sprintf($bodyverb, $ulink, $alink, $plink);
}
/**
* @brief Creates a XML object for a "like"
*
* @param array $importer Array of the importer user
* @param array $parent_item The item array of the parent item
*
* @return string The XML
*/
private static function constructLikeObject($importer, $parent_item)
{
$objtype = ACTIVITY_OBJ_NOTE;
$link = '<link rel="alternate" type="text/html" href="'.System::baseUrl()."/display/".$importer["nickname"]."/".$parent_item["id"].'" />';
$parent_body = $parent_item["body"];
$xmldata = ["object" => ["type" => $objtype,
"local" => "1",
"id" => $parent_item["uri"],
"link" => $link,
"title" => "",
"content" => $parent_body]];
return XML::fromArray($xmldata, $xml, true);
}
/**
* @brief Processes "like" messages
*
* @param array $importer Array of the importer user
* @param string $sender The sender of the message
* @param object $data The message object
*
* @return int The message id of the generated like or "false" if there was an error
*/
private static function receiveLike($importer, $sender, $data)
{
$author = notags(unxmlify($data->author));
$guid = notags(unxmlify($data->guid));
$parent_guid = notags(unxmlify($data->parent_guid));
$parent_type = notags(unxmlify($data->parent_type));
$positive = notags(unxmlify($data->positive));
// likes on comments aren't supported by Diaspora - only on posts
// But maybe this will be supported in the future, so we will accept it.
if (!in_array($parent_type, ["Post", "Comment"])) {
return false;
}
$contact = self::allowedContactByHandle($importer, $sender, true);
if (!$contact) {
return false;
}
$message_id = self::messageExists($importer["uid"], $guid);
if ($message_id) {
return true;
}
$parent_item = self::parentItem($importer["uid"], $parent_guid, $author, $contact);
if (!$parent_item) {
return false;
}
$person = self::personByHandle($author);
if (!is_array($person)) {
logger("unable to find author details");
return false;
}
// Fetch the contact id - if we know this contact
$author_contact = self::authorContactByUrl($contact, $person, $importer["uid"]);
// "positive" = "false" would be a Dislike - wich isn't currently supported by Diaspora
// We would accept this anyhow.
if ($positive == "true") {
$verb = ACTIVITY_LIKE;
} else {
$verb = ACTIVITY_DISLIKE;
}
$datarray = [];
$datarray["protocol"] = PROTOCOL_DIASPORA;
$datarray["uid"] = $importer["uid"];
$datarray["contact-id"] = $author_contact["cid"];
$datarray["network"] = $author_contact["network"];
$datarray["author-name"] = $person["name"];
$datarray["author-link"] = $person["url"];
$datarray["author-avatar"] = ((x($person, "thumb")) ? $person["thumb"] : $person["photo"]);
$datarray["owner-name"] = $contact["name"];
$datarray["owner-link"] = $contact["url"];
$datarray["owner-avatar"] = ((x($contact, "thumb")) ? $contact["thumb"] : $contact["photo"]);
$datarray["guid"] = $guid;
$datarray["uri"] = self::getUriFromGuid($author, $guid);
$datarray["type"] = "activity";
$datarray["verb"] = $verb;
$datarray["gravity"] = GRAVITY_LIKE;
$datarray["parent-uri"] = $parent_item["uri"];
$datarray["object-type"] = ACTIVITY_OBJ_NOTE;
$datarray["object"] = self::constructLikeObject($importer, $parent_item);
$datarray["body"] = self::constructLikeBody($contact, $parent_item, $guid);
$message_id = Item::insert($datarray);
if ($message_id <= 0) {
return false;
}
if ($message_id) {
logger("Stored like ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
}
// like on comments have the comment as parent. So we need to fetch the toplevel parent
if ($parent_item["id"] != $parent_item["parent"]) {
$toplevel = dba::selectFirst('item', ['origin'], ['id' => $parent_item["parent"]]);
$origin = $toplevel["origin"];
} else {
$origin = $parent_item["origin"];
}
// If we are the origin of the parent we store the original data and notify our followers
if ($message_id && $origin) {
// Formerly we stored the signed text, the signature and the author in different fields.
// We now store the raw data so that we are more flexible.
dba::insert('sign', ['iid' => $message_id, 'signed_text' => json_encode($data)]);
// notify others
Worker::add(PRIORITY_HIGH, "Notifier", "comment-import", $message_id);
}
return true;
}
/**
* @brief Processes private messages
*
* @param array $importer Array of the importer user
* @param object $data The message object
*
* @return bool Success?
*/
private static function receiveMessage($importer, $data)
{
$author = notags(unxmlify($data->author));
$guid = notags(unxmlify($data->guid));
$conversation_guid = notags(unxmlify($data->conversation_guid));
$text = unxmlify($data->text);
$created_at = DateTimeFormat::utc(notags(unxmlify($data->created_at)));
$contact = self::allowedContactByHandle($importer, $author, true);
if (!$contact) {
return false;
}
$conversation = null;
$c = q(
"SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
intval($importer["uid"]),
dbesc($conversation_guid)
);
if ($c) {
$conversation = $c[0];
} else {
logger("conversation not available.");
return false;
}
$message_uri = $author.":".$guid;
$person = self::personByHandle($author);
if (!$person) {
logger("unable to find author details");
return false;
}
$body = Markdown::toBBCode($text);
$body = self::replacePeopleGuid($body, $person["url"]);
dba::lock('mail');
$r = q(
"SELECT `id` FROM `mail` WHERE `guid` = '%s' AND `uid` = %d LIMIT 1",
dbesc($guid),
intval($importer["uid"])
);
if (DBM::is_result($r)) {
logger("duplicate message already delivered.", LOGGER_DEBUG);
return false;
}
q(
"INSERT INTO `mail` (`uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`)
VALUES ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
intval($importer["uid"]),
dbesc($guid),
intval($conversation["id"]),
dbesc($person["name"]),
dbesc($person["photo"]),
dbesc($person["url"]),
intval($contact["id"]),
dbesc($conversation["subject"]),
dbesc($body),
0,
1,
dbesc($message_uri),
dbesc($author.":".$conversation["guid"]),
dbesc($created_at)
);
dba::unlock();
dba::update('conv', ['updated' => DateTimeFormat::utcNow()], ['id' => $conversation["id"]]);
return true;
}
/**
* @brief Processes participations - unsupported by now
*
* @param array $importer Array of the importer user
* @param object $data The message object
*
* @return bool always true
*/
private static function receiveParticipation($importer, $data)
{
$author = strtolower(notags(unxmlify($data->author)));
$parent_guid = notags(unxmlify($data->parent_guid));
$contact_id = Contact::getIdForURL($author);
if (!$contact_id) {
logger('Contact not found: '.$author);
return false;
}
$person = self::personByHandle($author);
if (!is_array($person)) {
logger("Person not found: ".$author);
return false;
}
$item = dba::selectFirst('item', ['id'], ['guid' => $parent_guid, 'origin' => true, 'private' => false]);
if (!DBM::is_result($item)) {
logger('Item not found, no origin or private: '.$parent_guid);
return false;
}
$author_parts = explode('@', $author);
if (isset($author_parts[1])) {
$server = $author_parts[1];
} else {
// Should never happen
$server = $author;
}
logger('Received participation for ID: '.$item['id'].' - Contact: '.$contact_id.' - Server: '.$server, LOGGER_DEBUG);
if (!dba::exists('participation', ['iid' => $item['id'], 'server' => $server])) {
dba::insert('participation', ['iid' => $item['id'], 'cid' => $contact_id, 'fid' => $person['id'], 'server' => $server]);
}
// Send all existing comments and likes to the requesting server
$comments = dba::p("SELECT `item`.`id`, `item`.`verb`, `contact`.`self`
FROM `item`
INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
WHERE `item`.`parent` = ? AND `item`.`id` != `item`.`parent`", $item['id']);
while ($comment = dba::fetch($comments)) {
if ($comment['verb'] == ACTIVITY_POST) {
$cmd = $comment['self'] ? 'comment-new' : 'comment-import';
} else {
$cmd = $comment['self'] ? 'like' : 'comment-import';
}
logger("Send ".$cmd." for item ".$comment['id']." to contact ".$contact_id, LOGGER_DEBUG);
Worker::add(PRIORITY_HIGH, 'Delivery', $cmd, $comment['id'], $contact_id);
}
dba::close($comments);
return true;
}
/**
* @brief Processes photos - unneeded
*
* @param array $importer Array of the importer user
* @param object $data The message object
*
* @return bool always true
*/
private static function receivePhoto($importer, $data)
{
// There doesn't seem to be a reason for this function,
// since the photo data is transmitted in the status message as well
return true;
}
/**
* @brief Processes poll participations - unssupported
*
* @param array $importer Array of the importer user
* @param object $data The message object
*
* @return bool always true
*/
private static function receivePollParticipation($importer, $data)
{
// We don't support polls by now
return true;
}
/**
* @brief Processes incoming profile updates
*
* @param array $importer Array of the importer user
* @param object $data The message object
*
* @return bool Success
*/
private static function receiveProfile($importer, $data)
{
$author = strtolower(notags(unxmlify($data->author)));
$contact = self::contactByHandle($importer["uid"], $author);
if (!$contact) {
return false;
}
$name = unxmlify($data->first_name).((strlen($data->last_name)) ? " ".unxmlify($data->last_name) : "");
$image_url = unxmlify($data->image_url);
$birthday = unxmlify($data->birthday);
$gender = unxmlify($data->gender);
$about = Markdown::toBBCode(unxmlify($data->bio));
$location = Markdown::toBBCode(unxmlify($data->location));
$searchable = (unxmlify($data->searchable) == "true");
$nsfw = (unxmlify($data->nsfw) == "true");
$tags = unxmlify($data->tag_string);
$tags = explode("#", $tags);
$keywords = [];
foreach ($tags as $tag) {
$tag = trim(strtolower($tag));
if ($tag != "") {
$keywords[] = $tag;
}
}
$keywords = implode(", ", $keywords);
$handle_parts = explode("@", $author);
$nick = $handle_parts[0];
if ($name === "") {
$name = $handle_parts[0];
}
if (preg_match("|^https?://|", $image_url) === 0) {
$image_url = "http://".$handle_parts[1].$image_url;
}
Contact::updateAvatar($image_url, $importer["uid"], $contact["id"]);
// Generic birthday. We don't know the timezone. The year is irrelevant.
$birthday = str_replace("1000", "1901", $birthday);
if ($birthday != "") {
$birthday = DateTimeFormat::utc($birthday, "Y-m-d");
}
// this is to prevent multiple birthday notifications in a single year
// if we already have a stored birthday and the 'm-d' part hasn't changed, preserve the entry, which will preserve the notify year
if (substr($birthday, 5) === substr($contact["bd"], 5)) {
$birthday = $contact["bd"];
}
$r = q(
"UPDATE `contact` SET `name` = '%s', `nick` = '%s', `addr` = '%s', `name-date` = '%s', `bd` = '%s',
`location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s' WHERE `id` = %d AND `uid` = %d",
dbesc($name),
dbesc($nick),
dbesc($author),
dbesc(DateTimeFormat::utcNow()),
dbesc($birthday),
dbesc($location),
dbesc($about),
dbesc($keywords),
dbesc($gender),
intval($contact["id"]),
intval($importer["uid"])
);
$gcontact = ["url" => $contact["url"], "network" => NETWORK_DIASPORA, "generation" => 2,
"photo" => $image_url, "name" => $name, "location" => $location,
"about" => $about, "birthday" => $birthday, "gender" => $gender,
"addr" => $author, "nick" => $nick, "keywords" => $keywords,
"hide" => !$searchable, "nsfw" => $nsfw];
$gcid = GContact::update($gcontact);
GContact::link($gcid, $importer["uid"], $contact["id"]);
logger("Profile of contact ".$contact["id"]." stored for user ".$importer["uid"], LOGGER_DEBUG);
return true;
}
/**
* @brief Processes incoming friend requests
*
* @param array $importer Array of the importer user
* @param array $contact The contact that send the request
* @return void
*/
private static function receiveRequestMakeFriend($importer, $contact)
{
$a = get_app();
if ($contact["rel"] == CONTACT_IS_SHARING) {
dba::update(
'contact',
['rel' => CONTACT_IS_FRIEND, 'writable' => true],
['id' => $contact["id"], 'uid' => $importer["uid"]]
);
}
// send notification
$r = q(
"SELECT `hide-friends` FROM `profile` WHERE `uid` = %d AND `is-default` = 1 LIMIT 1",
intval($importer["uid"])
);
if ($r && !$r[0]["hide-friends"] && !$contact["hidden"] && intval(PConfig::get($importer["uid"], "system", "post_newfriend"))) {
$self = q(
"SELECT * FROM `contact` WHERE `self` AND `uid` = %d LIMIT 1",
intval($importer["uid"])
);
// they are not CONTACT_IS_FOLLOWER anymore but that's what we have in the array
if ($self && $contact["rel"] == CONTACT_IS_FOLLOWER) {
$arr = [];
$arr["protocol"] = PROTOCOL_DIASPORA;
$arr["uri"] = $arr["parent-uri"] = item_new_uri($a->get_hostname(), $importer["uid"]);
$arr["uid"] = $importer["uid"];
$arr["contact-id"] = $self[0]["id"];
$arr["wall"] = 1;
$arr["type"] = 'wall';
$arr["gravity"] = 0;
$arr["origin"] = 1;
$arr["author-name"] = $arr["owner-name"] = $self[0]["name"];
$arr["author-link"] = $arr["owner-link"] = $self[0]["url"];
$arr["author-avatar"] = $arr["owner-avatar"] = $self[0]["thumb"];
$arr["verb"] = ACTIVITY_FRIEND;
$arr["object-type"] = ACTIVITY_OBJ_PERSON;
$A = "[url=".$self[0]["url"]."]".$self[0]["name"]."[/url]";
$B = "[url=".$contact["url"]."]".$contact["name"]."[/url]";
$BPhoto = "[url=".$contact["url"]."][img]".$contact["thumb"]."[/img][/url]";
$arr["body"] = L10n::t('%1$s is now friends with %2$s', $A, $B)."\n\n\n".$BPhoto;
$arr["object"] = self::constructNewFriendObject($contact);
$user = dba::selectFirst('user', ['allow_cid', 'allow_gid', 'deny_cid', 'deny_gid'], ['uid' => $importer["uid"]]);
$arr["allow_cid"] = $user["allow_cid"];
$arr["allow_gid"] = $user["allow_gid"];
$arr["deny_cid"] = $user["deny_cid"];
$arr["deny_gid"] = $user["deny_gid"];
$i = Item::insert($arr);
if ($i) {
Worker::add(PRIORITY_HIGH, "Notifier", "activity", $i);
}
}
}
}
/**
* @brief Creates a XML object for a "new friend" message
*
* @param array $contact Array of the contact
*
* @return string The XML
*/
private static function constructNewFriendObject($contact)
{
$objtype = ACTIVITY_OBJ_PERSON;
$link = '<link rel="alternate" type="text/html" href="'.$contact["url"].'" />'."\n".
'<link rel="photo" type="image/jpeg" href="'.$contact["thumb"].'" />'."\n";
$xmldata = ["object" => ["type" => $objtype,
"title" => $contact["name"],
"id" => $contact["url"]."/".$contact["name"],
"link" => $link]];
return XML::fromArray($xmldata, $xml, true);
}
/**
* @brief Processes incoming sharing notification
*
* @param array $importer Array of the importer user
* @param object $data The message object
*
* @return bool Success
*/
private static function receiveContactRequest($importer, $data)
{
$author = unxmlify($data->author);
$recipient = unxmlify($data->recipient);
if (!$author || !$recipient) {
return false;
}
// the current protocol version doesn't know these fields
// That means that we will assume their existance
if (isset($data->following)) {
$following = (unxmlify($data->following) == "true");
} else {
$following = true;
}
if (isset($data->sharing)) {
$sharing = (unxmlify($data->sharing) == "true");
} else {
$sharing = true;
}
$contact = self::contactByHandle($importer["uid"], $author);
// perhaps we were already sharing with this person. Now they're sharing with us.
// That makes us friends.
if ($contact) {
if ($following) {
logger("Author ".$author." (Contact ".$contact["id"].") wants to follow us.", LOGGER_DEBUG);
self::receiveRequestMakeFriend($importer, $contact);
// refetch the contact array
$contact = self::contactByHandle($importer["uid"], $author);
// If we are now friends, we are sending a share message.
// Normally we needn't to do so, but the first message could have been vanished.
if (in_array($contact["rel"], [CONTACT_IS_FRIEND])) {
$u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($importer["uid"]));
if ($u) {
logger("Sending share message to author ".$author." - Contact: ".$contact["id"]." - User: ".$importer["uid"], LOGGER_DEBUG);
$ret = self::sendShare($u[0], $contact);
}
}
return true;
} else {
logger("Author ".$author." doesn't want to follow us anymore.", LOGGER_DEBUG);
Contact::removeFollower($importer, $contact);
return true;
}
}
if (!$following && $sharing && in_array($importer["page-flags"], [PAGE_SOAPBOX, PAGE_NORMAL])) {
logger("Author ".$author." wants to share with us - but doesn't want to listen. Request is ignored.", LOGGER_DEBUG);
return false;
} elseif (!$following && !$sharing) {
logger("Author ".$author." doesn't want anything - and we don't know the author. Request is ignored.", LOGGER_DEBUG);
return false;
} elseif (!$following && $sharing) {
logger("Author ".$author." wants to share with us.", LOGGER_DEBUG);
} elseif ($following && $sharing) {
logger("Author ".$author." wants to have a bidirectional conection.", LOGGER_DEBUG);
} elseif ($following && !$sharing) {
logger("Author ".$author." wants to listen to us.", LOGGER_DEBUG);
}
$ret = self::personByHandle($author);
if (!$ret || ($ret["network"] != NETWORK_DIASPORA)) {
logger("Cannot resolve diaspora handle ".$author." for ".$recipient);
return false;
}
$batch = (($ret["batch"]) ? $ret["batch"] : implode("/", array_slice(explode("/", $ret["url"]), 0, 3))."/receive/public");
$r = q(
"INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`nurl`,`batch`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
VALUES (%d, '%s', '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s','%s',%d,%d)",
intval($importer["uid"]),
dbesc($ret["network"]),
dbesc($ret["addr"]),
DateTimeFormat::utcNow(),
dbesc($ret["url"]),
dbesc(normalise_link($ret["url"])),
dbesc($batch),
dbesc($ret["name"]),
dbesc($ret["nick"]),
dbesc($ret["photo"]),
dbesc($ret["pubkey"]),
dbesc($ret["notify"]),
dbesc($ret["poll"]),
1,
2
);
// find the contact record we just created
$contact_record = self::contactByHandle($importer["uid"], $author);
if (!$contact_record) {
logger("unable to locate newly created contact record.");
return;
}
logger("Author ".$author." was added as contact number ".$contact_record["id"].".", LOGGER_DEBUG);
Group::addMember(User::getDefaultGroup($importer['uid'], $ret["network"]), $contact_record['id']);
Contact::updateAvatar($ret["photo"], $importer['uid'], $contact_record["id"], true);
if ($importer["page-flags"] == PAGE_NORMAL) {
logger("Sending intra message for author ".$author.".", LOGGER_DEBUG);
$hash = random_string().(string)time(); // Generate a confirm_key
$ret = q(
"INSERT INTO `intro` (`uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`)
VALUES (%d, %d, %d, %d, '%s', '%s', '%s')",
intval($importer["uid"]),
intval($contact_record["id"]),
0,
0,
dbesc(L10n::t("Sharing notification from Diaspora network")),
dbesc($hash),
dbesc(DateTimeFormat::utcNow())
);
} else {
// automatic friend approval
logger("Does an automatic friend approval for author ".$author.".", LOGGER_DEBUG);
Contact::updateAvatar($contact_record["photo"], $importer["uid"], $contact_record["id"]);
// technically they are sharing with us (CONTACT_IS_SHARING),
// but if our page-type is PAGE_COMMUNITY or PAGE_SOAPBOX
// we are going to change the relationship and make them a follower.
if (($importer["page-flags"] == PAGE_FREELOVE) && $sharing && $following) {
$new_relation = CONTACT_IS_FRIEND;
} elseif (($importer["page-flags"] == PAGE_FREELOVE) && $sharing) {
$new_relation = CONTACT_IS_SHARING;
} else {
$new_relation = CONTACT_IS_FOLLOWER;
}
$r = q(
"UPDATE `contact` SET `rel` = %d,
`name-date` = '%s',
`uri-date` = '%s',
`blocked` = 0,
`pending` = 0,
`writable` = 1
WHERE `id` = %d
",
intval($new_relation),
dbesc(DateTimeFormat::utcNow()),
dbesc(DateTimeFormat::utcNow()),
intval($contact_record["id"])
);
$u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($importer["uid"]));
if ($u) {
logger("Sending share message (Relation: ".$new_relation.") to author ".$author." - Contact: ".$contact_record["id"]." - User: ".$importer["uid"], LOGGER_DEBUG);
$ret = self::sendShare($u[0], $contact_record);
// Send the profile data, maybe it weren't transmitted before
self::sendProfile($importer["uid"], [$contact_record]);
}
}
return true;
}
/**
* @brief Fetches a message with a given guid
*
* @param string $guid message guid
* @param string $orig_author handle of the original post
* @param string $author handle of the sharer
*
* @return array The fetched item
*/
private static function originalItem($guid, $orig_author, $author)
{
// Do we already have this item?
$r = q(
"SELECT `body`, `tag`, `app`, `created`, `object-type`, `uri`, `guid`,
`author-name`, `author-link`, `author-avatar`
FROM `item` WHERE `guid` = '%s' AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
dbesc($guid)
);
if (DBM::is_result($r)) {
logger("reshared message ".$guid." already exists on system.");
// Maybe it is already a reshared item?
// Then refetch the content, if it is a reshare from a reshare.
// If it is a reshared post from another network then reformat to avoid display problems with two share elements
if (self::isReshare($r[0]["body"], true)) {
$r = [];
} elseif (self::isReshare($r[0]["body"], false) || strstr($r[0]["body"], "[share")) {
$r[0]["body"] = Markdown::toBBCode(BBCode::toMarkdown($r[0]["body"]));
$r[0]["body"] = self::replacePeopleGuid($r[0]["body"], $r[0]["author-link"]);
// Add OEmbed and other information to the body
$r[0]["body"] = add_page_info_to_body($r[0]["body"], false, true);
return $r[0];
} else {
return $r[0];
}
}
if (!DBM::is_result($r)) {
$server = "https://".substr($orig_author, strpos($orig_author, "@") + 1);
logger("1st try: reshared message ".$guid." will be fetched via SSL from the server ".$server);
$item_id = self::storeByGuid($guid, $server);
if (!$item_id) {
$server = "http://".substr($orig_author, strpos($orig_author, "@") + 1);
logger("2nd try: reshared message ".$guid." will be fetched without SLL from the server ".$server);
$item_id = self::storeByGuid($guid, $server);
}
if ($item_id) {
$r = q(
"SELECT `body`, `tag`, `app`, `created`, `object-type`, `uri`, `guid`,
`author-name`, `author-link`, `author-avatar`
FROM `item` WHERE `id` = %d AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
intval($item_id)
);
if (DBM::is_result($r)) {
// If it is a reshared post from another network then reformat to avoid display problems with two share elements
if (self::isReshare($r[0]["body"], false)) {
$r[0]["body"] = Markdown::toBBCode(BBCode::toMarkdown($r[0]["body"]));
$r[0]["body"] = self::replacePeopleGuid($r[0]["body"], $r[0]["author-link"]);
}
return $r[0];
}
}
}
return false;
}
/**
* @brief Processes a reshare message
*
* @param array $importer Array of the importer user
* @param object $data The message object
* @param string $xml The original XML of the message
*
* @return int the message id
*/
private static function receiveReshare($importer, $data, $xml)
{
$author = notags(unxmlify($data->author));
$guid = notags(unxmlify($data->guid));
$created_at = DateTimeFormat::utc(notags(unxmlify($data->created_at)));
$root_author = notags(unxmlify($data->root_author));
$root_guid = notags(unxmlify($data->root_guid));
/// @todo handle unprocessed property "provider_display_name"
$public = notags(unxmlify($data->public));
$contact = self::allowedContactByHandle($importer, $author, false);
if (!$contact) {
return false;
}
$message_id = self::messageExists($importer["uid"], $guid);
if ($message_id) {
return true;
}
$original_item = self::originalItem($root_guid, $root_author, $author);
if (!$original_item) {
return false;
}
$orig_url = System::baseUrl()."/display/".$original_item["guid"];
$datarray = [];
$datarray["uid"] = $importer["uid"];
$datarray["contact-id"] = $contact["id"];
$datarray["network"] = NETWORK_DIASPORA;
$datarray["author-name"] = $contact["name"];
$datarray["author-link"] = $contact["url"];
$datarray["author-avatar"] = ((x($contact, "thumb")) ? $contact["thumb"] : $contact["photo"]);
$datarray["owner-name"] = $datarray["author-name"];
$datarray["owner-link"] = $datarray["author-link"];
$datarray["owner-avatar"] = $datarray["author-avatar"];
$datarray["guid"] = $guid;
$datarray["uri"] = $datarray["parent-uri"] = self::getUriFromGuid($author, $guid);
$datarray["verb"] = ACTIVITY_POST;
$datarray["gravity"] = GRAVITY_PARENT;
$datarray["protocol"] = PROTOCOL_DIASPORA;
$datarray["source"] = $xml;
$prefix = share_header(
$original_item["author-name"],
$original_item["author-link"],
$original_item["author-avatar"],
$original_item["guid"],
$original_item["created"],
$orig_url
);
$datarray["body"] = $prefix.$original_item["body"]."[/share]";
$datarray["tag"] = $original_item["tag"];
$datarray["app"] = $original_item["app"];
$datarray["plink"] = self::plink($author, $guid);
$datarray["private"] = (($public == "false") ? 1 : 0);
$datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
$datarray["object-type"] = $original_item["object-type"];
self::fetchGuid($datarray);
$message_id = Item::insert($datarray);
self::sendParticipation($contact, $datarray);
if ($message_id) {
logger("Stored reshare ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
return true;
} else {
return false;
}
}
/**
* @brief Processes retractions
*
* @param array $importer Array of the importer user
* @param array $contact The contact of the item owner
* @param object $data The message object
*
* @return bool success
*/
private static function itemRetraction($importer, $contact, $data)
{
$author = notags(unxmlify($data->author));
$target_guid = notags(unxmlify($data->target_guid));
$target_type = notags(unxmlify($data->target_type));
$person = self::personByHandle($author);
if (!is_array($person)) {
logger("unable to find author detail for ".$author);
return false;
}
if (empty($contact["url"])) {
$contact["url"] = $person["url"];
}
// Fetch items that are about to be deleted
$fields = ['uid', 'id', 'parent', 'parent-uri', 'author-link'];
// When we receive a public retraction, we delete every item that we find.
if ($importer['uid'] == 0) {
$condition = ["`guid` = ? AND NOT `file` LIKE '%%[%%' AND NOT `deleted`", $target_guid];
} else {
$condition = ["`guid` = ? AND `uid` = ? AND NOT `file` LIKE '%%[%%' AND NOT `deleted`", $target_guid, $importer['uid']];
}
$r = dba::select('item', $fields, $condition);
if (!DBM::is_result($r)) {
logger("Target guid ".$target_guid." was not found on this system for user ".$importer['uid'].".");
return false;
}
while ($item = dba::fetch($r)) {
// Fetch the parent item
$parent = dba::selectFirst('item', ['author-link', 'origin'], ['id' => $item["parent"]]);
// Only delete it if the parent author really fits
if (!link_compare($parent["author-link"], $contact["url"]) && !link_compare($item["author-link"], $contact["url"])) {
logger("Thread author ".$parent["author-link"]." and item author ".$item["author-link"]." don't fit to expected contact ".$contact["url"], LOGGER_DEBUG);
continue;
}
Item::deleteById($item["id"]);
logger("Deleted target ".$target_guid." (".$item["id"].") from user ".$item["uid"]." parent: ".$item["parent"], LOGGER_DEBUG);
// Now check if the retraction needs to be relayed by us
if ($parent["origin"]) {
// notify others
Worker::add(PRIORITY_HIGH, "Notifier", "drop", $item["id"]);
}
}
return true;
}
/**
* @brief Receives retraction messages
*
* @param array $importer Array of the importer user
* @param string $sender The sender of the message
* @param object $data The message object
*
* @return bool Success
*/
private static function receiveRetraction($importer, $sender, $data)
{
$target_type = notags(unxmlify($data->target_type));
$contact = self::contactByHandle($importer["uid"], $sender);
if (!$contact && (in_array($target_type, ["Contact", "Person"]))) {
logger("cannot find contact for sender: ".$sender." and user ".$importer["uid"]);
return false;
}
logger("Got retraction for ".$target_type.", sender ".$sender." and user ".$importer["uid"], LOGGER_DEBUG);
switch ($target_type) {
case "Comment":
case "Like":
case "Post":
case "Reshare":
case "StatusMessage":
return self::itemRetraction($importer, $contact, $data);
case "Contact":
case "Person":
/// @todo What should we do with an "unshare"?
// Removing the contact isn't correct since we still can read the public items
Contact::remove($contact["id"]);
return true;
default:
logger("Unknown target type ".$target_type);
return false;
}
return true;
}
/**
* @brief Receives status messages
*
* @param array $importer Array of the importer user
* @param object $data The message object
* @param string $xml The original XML of the message
*
* @return int The message id of the newly created item
*/
private static function receiveStatusMessage($importer, $data, $xml)
{
$author = notags(unxmlify($data->author));
$guid = notags(unxmlify($data->guid));
$created_at = DateTimeFormat::utc(notags(unxmlify($data->created_at)));
$public = notags(unxmlify($data->public));
$text = unxmlify($data->text);
$provider_display_name = notags(unxmlify($data->provider_display_name));
$contact = self::allowedContactByHandle($importer, $author, false);
if (!$contact) {
return false;
}
$message_id = self::messageExists($importer["uid"], $guid);
if ($message_id) {
return true;
}
$address = [];
if ($data->location) {
foreach ($data->location->children() as $fieldname => $data) {
$address[$fieldname] = notags(unxmlify($data));
}
}
$body = Markdown::toBBCode($text);
$datarray = [];
// Attach embedded pictures to the body
if ($data->photo) {
foreach ($data->photo as $photo) {
$body = "[img]".unxmlify($photo->remote_photo_path).
unxmlify($photo->remote_photo_name)."[/img]\n".$body;
}
$datarray["object-type"] = ACTIVITY_OBJ_IMAGE;
} else {
$datarray["object-type"] = ACTIVITY_OBJ_NOTE;
// Add OEmbed and other information to the body
if (!self::isRedmatrix($contact["url"])) {
$body = add_page_info_to_body($body, false, true);
}
}
/// @todo enable support for polls
//if ($data->poll) {
// foreach ($data->poll AS $poll)
// print_r($poll);
// die("poll!\n");
//}
/// @todo enable support for events
$datarray["uid"] = $importer["uid"];
$datarray["contact-id"] = $contact["id"];
$datarray["network"] = NETWORK_DIASPORA;
$datarray["author-name"] = $contact["name"];
$datarray["author-link"] = $contact["url"];
$datarray["author-avatar"] = ((x($contact, "thumb")) ? $contact["thumb"] : $contact["photo"]);
$datarray["owner-name"] = $datarray["author-name"];
$datarray["owner-link"] = $datarray["author-link"];
$datarray["owner-avatar"] = $datarray["author-avatar"];
$datarray["guid"] = $guid;
$datarray["uri"] = $datarray["parent-uri"] = self::getUriFromGuid($author, $guid);
$datarray["verb"] = ACTIVITY_POST;
$datarray["gravity"] = GRAVITY_PARENT;
$datarray["protocol"] = PROTOCOL_DIASPORA;
$datarray["source"] = $xml;
$datarray["body"] = self::replacePeopleGuid($body, $contact["url"]);
if ($provider_display_name != "") {
$datarray["app"] = $provider_display_name;
}
$datarray["plink"] = self::plink($author, $guid);
$datarray["private"] = (($public == "false") ? 1 : 0);
$datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
if (isset($address["address"])) {
$datarray["location"] = $address["address"];
}
if (isset($address["lat"]) && isset($address["lng"])) {
$datarray["coord"] = $address["lat"]." ".$address["lng"];
}
self::fetchGuid($datarray);
$message_id = Item::insert($datarray);
self::sendParticipation($contact, $datarray);
if ($message_id) {
logger("Stored item ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
return true;
} else {
return false;
}
}
/* ************************************************************************************** *
* Here are all the functions that are needed to transmit data with the Diaspora protocol *
* ************************************************************************************** */
/**
* @brief returnes the handle of a contact
*
* @param array $contact contact array
*
* @return string the handle in the format user@domain.tld
*/
private static function myHandle($contact)
{
if ($contact["addr"] != "") {
return $contact["addr"];
}
// Normally we should have a filled "addr" field - but in the past this wasn't the case
// So - just in case - we build the the address here.
if ($contact["nickname"] != "") {
$nick = $contact["nickname"];
} else {
$nick = $contact["nick"];
}
return $nick."@".substr(System::baseUrl(), strpos(System::baseUrl(), "://") + 3);
}
/**
* @brief Creates the data for a private message in the new format
*
* @param string $msg The message that is to be transmitted
* @param array $user The record of the sender
* @param array $contact Target of the communication
* @param string $prvkey The private key of the sender
* @param string $pubkey The public key of the receiver
*
* @return string The encrypted data
*/
public static function encodePrivateData($msg, $user, $contact, $prvkey, $pubkey)
{
logger("Message: ".$msg, LOGGER_DATA);
// without a public key nothing will work
if (!$pubkey) {
logger("pubkey missing: contact id: ".$contact["id"]);
return false;
}
$aes_key = openssl_random_pseudo_bytes(32);
$b_aes_key = base64_encode($aes_key);
$iv = openssl_random_pseudo_bytes(16);
$b_iv = base64_encode($iv);
$ciphertext = self::aesEncrypt($aes_key, $iv, $msg);
$json = json_encode(["iv" => $b_iv, "key" => $b_aes_key]);
$encrypted_key_bundle = "";
openssl_public_encrypt($json, $encrypted_key_bundle, $pubkey);
$json_object = json_encode(
["aes_key" => base64_encode($encrypted_key_bundle),
"encrypted_magic_envelope" => base64_encode($ciphertext)]
);
return $json_object;
}
/**
* @brief Creates the envelope for the "fetch" endpoint and for the new format
*
* @param string $msg The message that is to be transmitted
* @param array $user The record of the sender
*
* @return string The envelope
*/
public static function buildMagicEnvelope($msg, $user)
{
$b64url_data = base64url_encode($msg);
$data = str_replace(["\n", "\r", " ", "\t"], ["", "", "", ""], $b64url_data);
$key_id = base64url_encode(self::myHandle($user));
$type = "application/xml";
$encoding = "base64url";
$alg = "RSA-SHA256";
$signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
// Fallback if the private key wasn't transmitted in the expected field
if ($user['uprvkey'] == "") {
$user['uprvkey'] = $user['prvkey'];
}
$signature = Crypto::rsaSign($signable_data, $user["uprvkey"]);
$sig = base64url_encode($signature);
$xmldata = ["me:env" => ["me:data" => $data,
"@attributes" => ["type" => $type],
"me:encoding" => $encoding,
"me:alg" => $alg,
"me:sig" => $sig,
"@attributes2" => ["key_id" => $key_id]]];
$namespaces = ["me" => "http://salmon-protocol.org/ns/magic-env"];
return XML::fromArray($xmldata, $xml, false, $namespaces);
}
/**
* @brief Create the envelope for a message
*
* @param string $msg The message that is to be transmitted
* @param array $user The record of the sender
* @param array $contact Target of the communication
* @param string $prvkey The private key of the sender
* @param string $pubkey The public key of the receiver
* @param bool $public Is the message public?
*
* @return string The message that will be transmitted to other servers
*/
public static function buildMessage($msg, $user, $contact, $prvkey, $pubkey, $public = false)
{
// The message is put into an envelope with the sender's signature
$envelope = self::buildMagicEnvelope($msg, $user);
// Private messages are put into a second envelope, encrypted with the receivers public key
if (!$public) {
$envelope = self::encodePrivateData($envelope, $user, $contact, $prvkey, $pubkey);
}
return $envelope;
}
/**
* @brief Creates a signature for a message
*
* @param array $owner the array of the owner of the message
* @param array $message The message that is to be signed
*
* @return string The signature
*/
private static function signature($owner, $message)
{
$sigmsg = $message;
unset($sigmsg["author_signature"]);
unset($sigmsg["parent_author_signature"]);
$signed_text = implode(";", $sigmsg);
return base64_encode(Crypto::rsaSign($signed_text, $owner["uprvkey"], "sha256"));
}
/**
* @brief Transmit a message to a target server
*
* @param array $owner the array of the item owner
* @param array $contact Target of the communication
* @param string $envelope The message that is to be transmitted
* @param bool $public_batch Is it a public post?
* @param bool $queue_run Is the transmission called from the queue?
* @param string $guid message guid
*
* @return int Result of the transmission
*/
public static function transmit($owner, $contact, $envelope, $public_batch, $queue_run = false, $guid = "", $no_queue = false)
{
$a = get_app();
$enabled = intval(Config::get("system", "diaspora_enabled"));
if (!$enabled) {
return 200;
}
$logid = random_string(4);
$dest_url = ($public_batch ? $contact["batch"] : $contact["notify"]);
// We always try to use the data from the fcontact table.
// This is important for transmitting data to Friendica servers.
if (!empty($contact['addr'])) {
$fcontact = self::personByHandle($contact['addr']);
if (!empty($fcontact)) {
$dest_url = ($public_batch ? $fcontact["batch"] : $fcontact["notify"]);
}
}
if (!$dest_url) {
logger("no url for contact: ".$contact["id"]." batch mode =".$public_batch);
return 0;
}
logger("transmit: ".$logid."-".$guid." ".$dest_url);
if (!$queue_run && Queue::wasDelayed($contact["id"])) {
$return_code = 0;
} else {
if (!intval(Config::get("system", "diaspora_test"))) {
$content_type = (($public_batch) ? "application/magic-envelope+xml" : "application/json");
Network::post($dest_url."/", $envelope, ["Content-Type: ".$content_type]);
$return_code = $a->get_curl_code();
} else {
logger("test_mode");
return 200;
}
}
logger("transmit: ".$logid."-".$guid." returns: ".$return_code);
if (!$return_code || (($return_code == 503) && (stristr($a->get_curl_headers(), "retry-after")))) {
if (!$no_queue && ($contact['contact-type'] != ACCOUNT_TYPE_RELAY)) {
logger("queue message");
// queue message for redelivery
Queue::add($contact["id"], NETWORK_DIASPORA, $envelope, $public_batch, $guid);
}
// The message could not be delivered. We mark the contact as "dead"
Contact::markForArchival($contact);
} elseif (($return_code >= 200) && ($return_code <= 299)) {
// We successfully delivered a message, the contact is alive
Contact::unmarkForArchival($contact);
}
return $return_code ? $return_code : -1;
}
/**
* @brief Build the post xml
*
* @param string $type The message type
* @param array $message The message data
*
* @return string The post XML
*/
public static function buildPostXml($type, $message)
{
$data = [$type => $message];
return XML::fromArray($data, $xml);
}
/**
* @brief Builds and transmit messages
*
* @param array $owner the array of the item owner
* @param array $contact Target of the communication
* @param string $type The message type
* @param array $message The message data
* @param bool $public_batch Is it a public post?
* @param string $guid message guid
* @param bool $spool Should the transmission be spooled or transmitted?
*
* @return int Result of the transmission
*/
private static function buildAndTransmit($owner, $contact, $type, $message, $public_batch = false, $guid = "", $spool = false)
{
$msg = self::buildPostXml($type, $message);
logger('message: '.$msg, LOGGER_DATA);
logger('send guid '.$guid, LOGGER_DEBUG);
// Fallback if the private key wasn't transmitted in the expected field
if ($owner['uprvkey'] == "") {
$owner['uprvkey'] = $owner['prvkey'];
}
$envelope = self::buildMessage($msg, $owner, $contact, $owner['uprvkey'], $contact['pubkey'], $public_batch);
if ($spool) {
Queue::add($contact['id'], NETWORK_DIASPORA, $envelope, $public_batch, $guid);
return true;
} else {
$return_code = self::transmit($owner, $contact, $envelope, $public_batch, false, $guid);
}
logger("guid: ".$guid." result ".$return_code, LOGGER_DEBUG);
return $return_code;
}
/**
* @brief sends a participation (Used to get all further updates)
*
* @param array $contact Target of the communication
* @param array $item Item array
*
* @return int The result of the transmission
*/
private static function sendParticipation($contact, $item)
{
// Don't send notifications for private postings
if ($item['private']) {
return;
}
$cachekey = "diaspora:sendParticipation:".$item['guid'];
$result = Cache::get($cachekey);
if (!is_null($result)) {
return;
}
// Fetch some user id to have a valid handle to transmit the participation.
// In fact it doesn't matter which user sends this - but it is needed by the protocol.
// If the item belongs to a user, we take this user id.
if ($item['uid'] == 0) {
$condition = ['verified' => true, 'blocked' => false, 'account_removed' => false, 'account_expired' => false];
$first_user = dba::selectFirst('user', ['uid'], $condition);
$owner = User::getOwnerDataById($first_user['uid']);
} else {
$owner = User::getOwnerDataById($item['uid']);
}
$author = self::myHandle($owner);
$message = ["author" => $author,
"guid" => get_guid(32),
"parent_type" => "Post",
"parent_guid" => $item["guid"]];
logger("Send participation for ".$item["guid"]." by ".$author, LOGGER_DEBUG);
// It doesn't matter what we store, we only want to avoid sending repeated notifications for the same item
Cache::set($cachekey, $item["guid"], CACHE_QUARTER_HOUR);
return self::buildAndTransmit($owner, $contact, "participation", $message);
}
/**
* @brief sends an account migration
*
* @param array $owner the array of the item owner
* @param array $contact Target of the communication
* @param int $uid User ID
*
* @return int The result of the transmission
*/
public static function sendAccountMigration($owner, $contact, $uid)
{
$old_handle = PConfig::get($uid, 'system', 'previous_addr');
$profile = self::createProfileData($uid);
$signed_text = 'AccountMigration:'.$old_handle.':'.$profile['author'];
$signature = base64_encode(Crypto::rsaSign($signed_text, $owner["uprvkey"], "sha256"));
$message = ["author" => $old_handle,
"profile" => $profile,
"signature" => $signature];
logger("Send account migration ".print_r($message, true), LOGGER_DEBUG);
return self::buildAndTransmit($owner, $contact, "account_migration", $message);
}
/**
* @brief Sends a "share" message
*
* @param array $owner the array of the item owner
* @param array $contact Target of the communication
*
* @return int The result of the transmission
*/
public static function sendShare($owner, $contact)
{
/**
* @todo support the different possible combinations of "following" and "sharing"
* Currently, Diaspora only interprets the "sharing" field
*
* Before switching this code productive, we have to check all "sendShare" calls if "rel" is set correctly
*/
/*
switch ($contact["rel"]) {
case CONTACT_IS_FRIEND:
$following = true;
$sharing = true;
case CONTACT_IS_SHARING:
$following = false;
$sharing = true;
case CONTACT_IS_FOLLOWER:
$following = true;
$sharing = false;
}
*/
$message = ["author" => self::myHandle($owner),
"recipient" => $contact["addr"],
"following" => "true",
"sharing" => "true"];
logger("Send share ".print_r($message, true), LOGGER_DEBUG);
return self::buildAndTransmit($owner, $contact, "contact", $message);
}
/**
* @brief sends an "unshare"
*
* @param array $owner the array of the item owner
* @param array $contact Target of the communication
*
* @return int The result of the transmission
*/
public static function sendUnshare($owner, $contact)
{
$message = ["author" => self::myHandle($owner),
"recipient" => $contact["addr"],
"following" => "false",
"sharing" => "false"];
logger("Send unshare ".print_r($message, true), LOGGER_DEBUG);
return self::buildAndTransmit($owner, $contact, "contact", $message);
}
/**
* @brief Checks a message body if it is a reshare
*
* @param string $body The message body that is to be check
* @param bool $complete Should it be a complete check or a simple check?
*
* @return array|bool Reshare details or "false" if no reshare
*/
public static function isReshare($body, $complete = true)
{
$body = trim($body);
// Skip if it isn't a pure repeated messages
// Does it start with a share?
if ((strpos($body, "[share") > 0) && $complete) {
return(false);
}
// Does it end with a share?
if (strlen($body) > (strrpos($body, "[/share]") + 8)) {
return(false);
}
$attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "$1", $body);
// Skip if there is no shared message in there
if ($body == $attributes) {
return(false);
}
// If we don't do the complete check we quit here
if (!$complete) {
return true;
}
$guid = "";
preg_match("/guid='(.*?)'/ism", $attributes, $matches);
if ($matches[1] != "") {
$guid = $matches[1];
}
preg_match('/guid="(.*?)"/ism', $attributes, $matches);
if ($matches[1] != "") {
$guid = $matches[1];
}
if ($guid != "") {
$r = q(
"SELECT `contact-id` FROM `item` WHERE `guid` = '%s' AND `network` IN ('%s', '%s') LIMIT 1",
dbesc($guid),
NETWORK_DFRN,
NETWORK_DIASPORA
);
if ($r) {
$ret= [];
$ret["root_handle"] = self::handleFromContact($r[0]["contact-id"]);
$ret["root_guid"] = $guid;
return($ret);
}
}
$profile = "";
preg_match("/profile='(.*?)'/ism", $attributes, $matches);
if ($matches[1] != "") {
$profile = $matches[1];
}
preg_match('/profile="(.*?)"/ism', $attributes, $matches);
if ($matches[1] != "") {
$profile = $matches[1];
}
$ret= [];
$ret["root_handle"] = preg_replace("=https?://(.*)/u/(.*)=ism", "$2@$1", $profile);
if (($ret["root_handle"] == $profile) || ($ret["root_handle"] == "")) {
return(false);
}
$link = "";
preg_match("/link='(.*?)'/ism", $attributes, $matches);
if ($matches[1] != "") {
$link = $matches[1];
}
preg_match('/link="(.*?)"/ism', $attributes, $matches);
if ($matches[1] != "") {
$link = $matches[1];
}
$ret["root_guid"] = preg_replace("=https?://(.*)/posts/(.*)=ism", "$2", $link);
if (($ret["root_guid"] == $link) || (trim($ret["root_guid"]) == "")) {
return(false);
}
return($ret);
}
/**
* @brief Create an event array
*
* @param integer $event_id The id of the event
*
* @return array with event data
*/
private static function buildEvent($event_id)
{
$r = q("SELECT `guid`, `uid`, `start`, `finish`, `nofinish`, `summary`, `desc`, `location`, `adjust` FROM `event` WHERE `id` = %d", intval($event_id));
if (!DBM::is_result($r)) {
return [];
}
$event = $r[0];
$eventdata = [];
$r = q("SELECT `timezone` FROM `user` WHERE `uid` = %d", intval($event['uid']));
if (!DBM::is_result($r)) {
return [];
}
$user = $r[0];
$r = q("SELECT `addr`, `nick` FROM `contact` WHERE `uid` = %d AND `self`", intval($event['uid']));
if (!DBM::is_result($r)) {
return [];
}
$owner = $r[0];
$eventdata['author'] = self::myHandle($owner);
if ($event['guid']) {
$eventdata['guid'] = $event['guid'];
}
$mask = DateTimeFormat::ATOM;
/// @todo - establish "all day" events in Friendica
$eventdata["all_day"] = "false";
if (!$event['adjust']) {
$eventdata['timezone'] = $user['timezone'];
if ($eventdata['timezone'] == "") {
$eventdata['timezone'] = 'UTC';
}
}
if ($event['start']) {
$eventdata['start'] = DateTimeFormat::convert($event['start'], "UTC", $eventdata['timezone'], $mask);
}
if ($event['finish'] && !$event['nofinish']) {
$eventdata['end'] = DateTimeFormat::convert($event['finish'], "UTC", $eventdata['timezone'], $mask);
}
if ($event['summary']) {
$eventdata['summary'] = html_entity_decode(BBCode::toMarkdown($event['summary']));
}
if ($event['desc']) {
$eventdata['description'] = html_entity_decode(BBCode::toMarkdown($event['desc']));
}
if ($event['location']) {
$event['location'] = preg_replace("/\[map\](.*?)\[\/map\]/ism", '$1', $event['location']);
$coord = Map::getCoordinates($event['location']);
$location = [];
$location["address"] = html_entity_decode(BBCode::toMarkdown($event['location']));
if (!empty($coord['lat']) && !empty($coord['lon'])) {
$location["lat"] = $coord['lat'];
$location["lng"] = $coord['lon'];
} else {
$location["lat"] = 0;
$location["lng"] = 0;
}
$eventdata['location'] = $location;
}
return $eventdata;
}
/**
* @brief Create a post (status message or reshare)
*
* @param array $item The item that will be exported
* @param array $owner the array of the item owner
*
* @return array
* 'type' -> Message type ("status_message" or "reshare")
* 'message' -> Array of XML elements of the status
*/
public static function buildStatus($item, $owner)
{
$cachekey = "diaspora:buildStatus:".$item['guid'];
$result = Cache::get($cachekey);
if (!is_null($result)) {
return $result;
}
$myaddr = self::myHandle($owner);
$public = (($item["private"]) ? "false" : "true");
$created = DateTimeFormat::utc($item["created"], DateTimeFormat::ATOM);
// Detect a share element and do a reshare
if (!$item['private'] && ($ret = self::isReshare($item["body"]))) {
$message = ["author" => $myaddr,
"guid" => $item["guid"],
"created_at" => $created,
"root_author" => $ret["root_handle"],
"root_guid" => $ret["root_guid"],
"provider_display_name" => $item["app"],
"public" => $public];
$type = "reshare";
} else {
$title = $item["title"];
$body = $item["body"];
// convert to markdown
$body = html_entity_decode(BBCode::toMarkdown($body));
// Adding the title
if (strlen($title)) {
$body = "## ".html_entity_decode($title)."\n\n".$body;
}
if ($item["attach"]) {
$cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism', $item["attach"], $matches, PREG_SET_ORDER);
if (cnt) {
$body .= "\n".L10n::t("Attachments:")."\n";
foreach ($matches as $mtch) {
$body .= "[".$mtch[3]."](".$mtch[1].")\n";
}
}
}
$location = [];
if ($item["location"] != "")
$location["address"] = $item["location"];
if ($item["coord"] != "") {
$coord = explode(" ", $item["coord"]);
$location["lat"] = $coord[0];
$location["lng"] = $coord[1];
}
$message = ["author" => $myaddr,
"guid" => $item["guid"],
"created_at" => $created,
"public" => $public,
"text" => $body,
"provider_display_name" => $item["app"],
"location" => $location];
// Diaspora rejects messages when they contain a location without "lat" or "lng"
if (!isset($location["lat"]) || !isset($location["lng"])) {
unset($message["location"]);
}
if ($item['event-id'] > 0) {
$event = self::buildEvent($item['event-id']);
if (count($event)) {
$message['event'] = $event;
if (!empty($event['location']['address']) &&
!empty($event['location']['lat']) &&
!empty($event['location']['lng'])) {
$message['location'] = $event['location'];
}
/// @todo Once Diaspora supports it, we will remove the body and the location hack above
// $message['text'] = '';
}
}
$type = "status_message";
}
$msg = ["type" => $type, "message" => $message];
Cache::set($cachekey, $msg, CACHE_QUARTER_HOUR);
return $msg;
}
/**
* @brief Sends a post
*
* @param array $item The item that will be exported
* @param array $owner the array of the item owner
* @param array $contact Target of the communication
* @param bool $public_batch Is it a public post?
*
* @return int The result of the transmission
*/
public static function sendStatus($item, $owner, $contact, $public_batch = false)
{
$status = self::buildStatus($item, $owner);
return self::buildAndTransmit($owner, $contact, $status["type"], $status["message"], $public_batch, $item["guid"]);
}
/**
* @brief Creates a "like" object
*
* @param array $item The item that will be exported
* @param array $owner the array of the item owner
*
* @return array The data for a "like"
*/
private static function constructLike($item, $owner)
{
$p = q(
"SELECT `guid`, `uri`, `parent-uri` FROM `item` WHERE `uri` = '%s' LIMIT 1",
dbesc($item["thr-parent"])
);
if (!DBM::is_result($p)) {
return false;
}
$parent = $p[0];
$target_type = ($parent["uri"] === $parent["parent-uri"] ? "Post" : "Comment");
$positive = null;
if ($item['verb'] === ACTIVITY_LIKE) {
$positive = "true";
} elseif ($item['verb'] === ACTIVITY_DISLIKE) {
$positive = "false";
}
return(["author" => self::myHandle($owner),
"guid" => $item["guid"],
"parent_guid" => $parent["guid"],
"parent_type" => $target_type,
"positive" => $positive,
"author_signature" => ""]);
}
/**
* @brief Creates an "EventParticipation" object
*
* @param array $item The item that will be exported
* @param array $owner the array of the item owner
*
* @return array The data for an "EventParticipation"
*/
private static function constructAttend($item, $owner)
{
$p = q(
"SELECT `guid`, `uri`, `parent-uri` FROM `item` WHERE `uri` = '%s' LIMIT 1",
dbesc($item["thr-parent"])
);
if (!DBM::is_result($p)) {
return false;
}
$parent = $p[0];
switch ($item['verb']) {
case ACTIVITY_ATTEND:
$attend_answer = 'accepted';
break;
case ACTIVITY_ATTENDNO:
$attend_answer = 'declined';
break;
case ACTIVITY_ATTENDMAYBE:
$attend_answer = 'tentative';
break;
default:
logger('Unknown verb '.$item['verb'].' in item '.$item['guid']);
return false;
}
return(["author" => self::myHandle($owner),
"guid" => $item["guid"],
"parent_guid" => $parent["guid"],
"status" => $attend_answer,
"author_signature" => ""]);
}
/**
* @brief Creates the object for a comment
*
* @param array $item The item that will be exported
* @param array $owner the array of the item owner
*
* @return array The data for a comment
*/
private static function constructComment($item, $owner)
{
$cachekey = "diaspora:constructComment:".$item['guid'];
$result = Cache::get($cachekey);
if (!is_null($result)) {
return $result;
}
$p = q(
"SELECT `guid` FROM `item` WHERE `parent` = %d AND `id` = %d LIMIT 1",
intval($item["parent"]),
intval($item["parent"])
);
if (!DBM::is_result($p)) {
return false;
}
$parent = $p[0];
$text = html_entity_decode(BBCode::toMarkdown($item["body"]));
$created = DateTimeFormat::utc($item["created"], DateTimeFormat::ATOM);
$comment = ["author" => self::myHandle($owner),
"guid" => $item["guid"],
"created_at" => $created,
"parent_guid" => $parent["guid"],
"text" => $text,
"author_signature" => ""];
// Send the thread parent guid only if it is a threaded comment
if ($item['thr-parent'] != $item['parent-uri']) {
$comment['thread_parent_guid'] = self::getGuidFromUri($item['thr-parent'], $item['uid']);
}
Cache::set($cachekey, $comment, CACHE_QUARTER_HOUR);
return($comment);
}
/**
* @brief Send a like or a comment
*
* @param array $item The item that will be exported
* @param array $owner the array of the item owner
* @param array $contact Target of the communication
* @param bool $public_batch Is it a public post?
*
* @return int The result of the transmission
*/
public static function sendFollowup($item, $owner, $contact, $public_batch = false)
{
if (in_array($item['verb'], [ACTIVITY_ATTEND, ACTIVITY_ATTENDNO, ACTIVITY_ATTENDMAYBE])) {
$message = self::constructAttend($item, $owner);
$type = "event_participation";
} elseif (in_array($item["verb"], [ACTIVITY_LIKE, ACTIVITY_DISLIKE])) {
$message = self::constructLike($item, $owner);
$type = "like";
} else {
$message = self::constructComment($item, $owner);
$type = "comment";
}
if (!$message) {
return false;
}
$message["author_signature"] = self::signature($owner, $message);
return self::buildAndTransmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
}
/**
* @brief Creates a message from a signature record entry
*
* @param array $item The item that will be exported
* @param array $signature The entry of the "sign" record
*
* @return string The message
*/
private static function messageFromSignature($item, $signature)
{
// Split the signed text
$signed_parts = explode(";", $signature['signed_text']);
if ($item["deleted"]) {
$message = ["author" => $signature['signer'],
"target_guid" => $signed_parts[0],
"target_type" => $signed_parts[1]];
} elseif (in_array($item["verb"], [ACTIVITY_LIKE, ACTIVITY_DISLIKE])) {
$message = ["author" => $signed_parts[4],
"guid" => $signed_parts[1],
"parent_guid" => $signed_parts[3],
"parent_type" => $signed_parts[2],
"positive" => $signed_parts[0],
"author_signature" => $signature['signature'],
"parent_author_signature" => ""];
} else {
// Remove the comment guid
$guid = array_shift($signed_parts);
// Remove the parent guid
$parent_guid = array_shift($signed_parts);
// Remove the handle
$handle = array_pop($signed_parts);
// Glue the parts together
$text = implode(";", $signed_parts);
$message = ["author" => $handle,
"guid" => $guid,
"parent_guid" => $parent_guid,
"text" => implode(";", $signed_parts),
"author_signature" => $signature['signature'],
"parent_author_signature" => ""];
}
return $message;
}
/**
* @brief Relays messages (like, comment, retraction) to other servers if we are the thread owner
*
* @param array $item The item that will be exported
* @param array $owner the array of the item owner
* @param array $contact Target of the communication
* @param bool $public_batch Is it a public post?
*
* @return int The result of the transmission
*/
public static function sendRelay($item, $owner, $contact, $public_batch = false)
{
if ($item["deleted"]) {
return self::sendRetraction($item, $owner, $contact, $public_batch, true);
} elseif (in_array($item["verb"], [ACTIVITY_LIKE, ACTIVITY_DISLIKE])) {
$type = "like";
} else {
$type = "comment";
}
logger("Got relayable data ".$type." for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
// fetch the original signature
$r = q(
"SELECT `signed_text`, `signature`, `signer` FROM `sign` WHERE `iid` = %d LIMIT 1",
intval($item["id"])
);
if (!$r) {
logger("Couldn't fetch signatur for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
return false;
}
$signature = $r[0];
// Old way - is used by the internal Friendica functions
/// @todo Change all signatur storing functions to the new format
if ($signature['signed_text'] && $signature['signature'] && $signature['signer']) {
$message = self::messageFromSignature($item, $signature);
} else {// New way
$msg = json_decode($signature['signed_text'], true);
$message = [];
if (is_array($msg)) {
foreach ($msg as $field => $data) {
if (!$item["deleted"]) {
if ($field == "diaspora_handle") {
$field = "author";
}
if ($field == "target_type") {
$field = "parent_type";
}
}
$message[$field] = $data;
}
} else {
logger("Signature text for item ".$item["guid"]." (".$item["id"].") couldn't be extracted: ".$signature['signed_text'], LOGGER_DEBUG);
}
}
$message["parent_author_signature"] = self::signature($owner, $message);
logger("Relayed data ".print_r($message, true), LOGGER_DEBUG);
return self::buildAndTransmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
}
/**
* @brief Sends a retraction (deletion) of a message, like or comment
*
* @param array $item The item that will be exported
* @param array $owner the array of the item owner
* @param array $contact Target of the communication
* @param bool $public_batch Is it a public post?
* @param bool $relay Is the retraction transmitted from a relay?
*
* @return int The result of the transmission
*/
public static function sendRetraction($item, $owner, $contact, $public_batch = false, $relay = false)
{
$itemaddr = self::handleFromContact($item["contact-id"], $item["author-id"]);
$msg_type = "retraction";
if ($item['id'] == $item['parent']) {
$target_type = "Post";
} elseif (in_array($item["verb"], [ACTIVITY_LIKE, ACTIVITY_DISLIKE])) {
$target_type = "Like";
} else {
$target_type = "Comment";
}
$message = ["author" => $itemaddr,
"target_guid" => $item['guid'],
"target_type" => $target_type];
logger("Got message ".print_r($message, true), LOGGER_DEBUG);
return self::buildAndTransmit($owner, $contact, $msg_type, $message, $public_batch, $item["guid"]);
}
/**
* @brief Sends a mail
*
* @param array $item The item that will be exported
* @param array $owner The owner
* @param array $contact Target of the communication
*
* @return int The result of the transmission
*/
public static function sendMail($item, $owner, $contact)
{
$myaddr = self::myHandle($owner);
$r = q(
"SELECT * FROM `conv` WHERE `id` = %d AND `uid` = %d LIMIT 1",
intval($item["convid"]),
intval($item["uid"])
);
if (!DBM::is_result($r)) {
logger("conversation not found.");
return;
}
$cnv = $r[0];
$conv = [
"author" => $cnv["creator"],
"guid" => $cnv["guid"],
"subject" => $cnv["subject"],
"created_at" => DateTimeFormat::utc($cnv['created'], DateTimeFormat::ATOM),
"participants" => $cnv["recips"]
];
$body = BBCode::toMarkdown($item["body"]);
$created = DateTimeFormat::utc($item["created"], DateTimeFormat::ATOM);
$msg = [
"author" => $myaddr,
"guid" => $item["guid"],
"conversation_guid" => $cnv["guid"],
"text" => $body,
"created_at" => $created,
];
if ($item["reply"]) {
$message = $msg;
$type = "message";
} else {
$message = [
"author" => $cnv["creator"],
"guid" => $cnv["guid"],
"subject" => $cnv["subject"],
"created_at" => DateTimeFormat::utc($cnv['created'], DateTimeFormat::ATOM),
"participants" => $cnv["recips"],
"message" => $msg];
$type = "conversation";
}
return self::buildAndTransmit($owner, $contact, $type, $message, false, $item["guid"]);
}
/**
* @brief Split a name into first name and last name
*
* @param string $name The name
*
* @return array The array with "first" and "last"
*/
public static function splitName($name) {
$name = trim($name);
// Is the name longer than 64 characters? Then cut the rest of it.
if (strlen($name) > 64) {
if ((strpos($name, ' ') <= 64) && (strpos($name, ' ') !== false)) {
$name = trim(substr($name, 0, strrpos(substr($name, 0, 65), ' ')));
} else {
$name = substr($name, 0, 64);
}
}
// Take the first word as first name
$first = ((strpos($name, ' ') ? trim(substr($name, 0, strpos($name, ' '))) : $name));
$last = (($first === $name) ? '' : trim(substr($name, strlen($first))));
if ((strlen($first) < 32) && (strlen($last) < 32)) {
return ['first' => $first, 'last' => $last];
}
// Take the last word as last name
$first = ((strrpos($name, ' ') ? trim(substr($name, 0, strrpos($name, ' '))) : $name));
$last = (($first === $name) ? '' : trim(substr($name, strlen($first))));
if ((strlen($first) < 32) && (strlen($last) < 32)) {
return ['first' => $first, 'last' => $last];
}
// Take the first 32 characters if there is no space in the first 32 characters
if ((strpos($name, ' ') > 32) || (strpos($name, ' ') === false)) {
$first = substr($name, 0, 32);
$last = substr($name, 32);
return ['first' => $first, 'last' => $last];
}
$first = trim(substr($name, 0, strrpos(substr($name, 0, 33), ' ')));
$last = (($first === $name) ? '' : trim(substr($name, strlen($first))));
// Check if the last name is longer than 32 characters
if (strlen($last) > 32) {
if (strpos($last, ' ') <= 32) {
$last = trim(substr($last, 0, strrpos(substr($last, 0, 33), ' ')));
} else {
$last = substr($last, 0, 32);
}
}
return ['first' => $first, 'last' => $last];
}
/**
* @brief Create profile data
*
* @param int $uid The user id
*
* @return array The profile data
*/
private static function createProfileData($uid)
{
$r = q(
"SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `user`.*, `user`.`prvkey` AS `uprvkey`, `contact`.`addr`
FROM `profile`
INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
INNER JOIN `contact` ON `profile`.`uid` = `contact`.`uid`
WHERE `user`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
intval($uid)
);
if (!$r) {
return [];
}
$profile = $r[0];
$handle = $profile["addr"];
$split_name = self::splitName($profile['name']);
$first = $split_name['first'];
$last = $split_name['last'];
$large = System::baseUrl().'/photo/custom/300/'.$profile['uid'].'.jpg';
$medium = System::baseUrl().'/photo/custom/100/'.$profile['uid'].'.jpg';
$small = System::baseUrl().'/photo/custom/50/' .$profile['uid'].'.jpg';
$searchable = (($profile['publish'] && $profile['net-publish']) ? 'true' : 'false');
$dob = null;
$about = null;
$location = null;
$tags = null;
if ($searchable === 'true') {
$dob = '';
if ($profile['dob'] && ($profile['dob'] > '0000-00-00')) {
list($year, $month, $day) = sscanf($profile['dob'], '%4d-%2d-%2d');
if ($year < 1004) {
$year = 1004;
}
$dob = DateTimeFormat::utc($year . '-' . $month . '-'. $day, 'Y-m-d');
}
$about = $profile['about'];
$about = strip_tags(BBCode::convert($about));
$location = Profile::formatLocation($profile);
$tags = '';
if ($profile['pub_keywords']) {
$kw = str_replace(',', ' ', $profile['pub_keywords']);
$kw = str_replace(' ', ' ', $kw);
$arr = explode(' ', $profile['pub_keywords']);
if (count($arr)) {
for ($x = 0; $x < 5; $x ++) {
if (trim($arr[$x])) {
$tags .= '#'. trim($arr[$x]) .' ';
}
}
}
}
$tags = trim($tags);
}
return ["author" => $handle,
"first_name" => $first,
"last_name" => $last,
"image_url" => $large,
"image_url_medium" => $medium,
"image_url_small" => $small,
"birthday" => $dob,
"gender" => $profile['gender'],
"bio" => $about,
"location" => $location,
"searchable" => $searchable,
"nsfw" => "false",
"tag_string" => $tags];
}
/**
* @brief Sends profile data
*
* @param int $uid The user id
* @param bool $recips optional, default false
* @return void
*/
public static function sendProfile($uid, $recips = false)
{
if (!$uid) {
return;
}
$owner = User::getOwnerDataById($uid);
if (!$owner) {
return;
}
if (!$recips) {
$recips = q(
"SELECT `id`,`name`,`network`,`pubkey`,`notify` FROM `contact` WHERE `network` = '%s'
AND `uid` = %d AND `rel` != %d",
dbesc(NETWORK_DIASPORA),
intval($uid),
intval(CONTACT_IS_SHARING)
);
}
if (!$recips) {
return;
}
$message = self::createProfileData($uid);
foreach ($recips as $recip) {
logger("Send updated profile data for user ".$uid." to contact ".$recip["id"], LOGGER_DEBUG);
self::buildAndTransmit($owner, $recip, "profile", $message, false, "", false);
}
}
/**
* @brief Stores the signature for likes that are created on our system
*
* @param array $contact The contact array of the "like"
* @param int $post_id The post id of the "like"
*
* @return bool Success
*/
public static function storeLikeSignature($contact, $post_id)
{
// Is the contact the owner? Then fetch the private key
if (!$contact['self'] || ($contact['uid'] == 0)) {
logger("No owner post, so not storing signature", LOGGER_DEBUG);
return false;
}
$r = q("SELECT `prvkey` FROM `user` WHERE `uid` = %d LIMIT 1", intval($contact['uid']));
if (!DBM::is_result($r)) {
return false;
}
$contact["uprvkey"] = $r[0]['prvkey'];
$r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1", intval($post_id));
if (!DBM::is_result($r)) {
return false;
}
if (!in_array($r[0]["verb"], [ACTIVITY_LIKE, ACTIVITY_DISLIKE])) {
return false;
}
$message = self::constructLike($r[0], $contact);
if ($message === false) {
return false;
}
$message["author_signature"] = self::signature($contact, $message);
/*
* Now store the signature more flexible to dynamically support new fields.
* This will break Diaspora compatibility with Friendica versions prior to 3.5.
*/
dba::insert('sign', ['iid' => $post_id, 'signed_text' => json_encode($message)]);
logger('Stored diaspora like signature');
return true;
}
/**
* @brief Stores the signature for comments that are created on our system
*
* @param array $item The item array of the comment
* @param array $contact The contact array of the item owner
* @param string $uprvkey The private key of the sender
* @param int $message_id The message id of the comment
*
* @return bool Success
*/
public static function storeCommentSignature($item, $contact, $uprvkey, $message_id)
{
if ($uprvkey == "") {
logger('No private key, so not storing comment signature', LOGGER_DEBUG);
return false;
}
$contact["uprvkey"] = $uprvkey;
$message = self::constructComment($item, $contact);
if ($message === false) {
return false;
}
$message["author_signature"] = self::signature($contact, $message);
/*
* Now store the signature more flexible to dynamically support new fields.
* This will break Diaspora compatibility with Friendica versions prior to 3.5.
*/
dba::insert('sign', ['iid' => $message_id, 'signed_text' => json_encode($message)]);
logger('Stored diaspora comment signature');
return true;
}
}