friendica_2021-01/include/follow.php

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<?php
/**
* @file include/follow.php
*/
use Friendica\App;
use Friendica\Core\Config;
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use Friendica\Core\System;
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use Friendica\Core\Worker;
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use Friendica\Database\DBM;
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use Friendica\Network\Probe;
use Friendica\Object\Contact;
use Friendica\Protocol\Diaspora;
use Friendica\Protocol\OStatus;
use Friendica\Protocol\PortableContact;
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require_once 'include/group.php';
require_once 'include/salmon.php';
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function update_contact($id) {
/*
Warning: Never ever fetch the public key via Probe::uri and write it into the contacts.
This will reliably kill your communication with Friendica contacts.
*/
$r = q("SELECT `url`, `nurl`, `addr`, `alias`, `batch`, `notify`, `poll`, `poco`, `network` FROM `contact` WHERE `id` = %d", intval($id));
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if (!$r)
return false;
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$ret = Probe::uri($r[0]["url"]);
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// If Probe::uri fails the network code will be different
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if ($ret["network"] != $r[0]["network"])
return false;
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$update = false;
// make sure to not overwrite existing values with blank entries
foreach ($ret AS $key => $val) {
if (isset($r[0][$key]) && ($r[0][$key] != "") && ($val == ""))
$ret[$key] = $r[0][$key];
if (isset($r[0][$key]) && ($ret[$key] != $r[0][$key]))
$update = true;
}
if (!$update)
return true;
q("UPDATE `contact` SET `url` = '%s', `nurl` = '%s', `addr` = '%s', `alias` = '%s', `batch` = '%s', `notify` = '%s', `poll` = '%s', `poco` = '%s' WHERE `id` = %d",
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dbesc($ret['url']),
dbesc(normalise_link($ret['url'])),
dbesc($ret['addr']),
dbesc($ret['alias']),
dbesc($ret['batch']),
dbesc($ret['notify']),
dbesc($ret['poll']),
dbesc($ret['poco']),
intval($id)
);
// Update the corresponding gcontact entry
PortableContact::lastUpdated($ret["url"]);
return true;
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}
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//
// Takes a $uid and a url/handle and adds a new contact
// Currently if the contact is DFRN, interactive needs to be true, to redirect to the
// dfrn_request page.
// Otherwise this can be used to bulk add statusnet contacts, twitter contacts, etc.
// Returns an array
// $return['success'] boolean true if successful
// $return['message'] error text if success is false.
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function new_contact($uid, $url, $interactive = false, $network = '') {
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$result = array('cid' => -1, 'success' => false,'message' => '');
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$a = get_app();
// remove ajax junk, e.g. Twitter
$url = str_replace('/#!/','/',$url);
if (! allowed_url($url)) {
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$result['message'] = t('Disallowed profile URL.');
return $result;
}
if (blocked_url($url)) {
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$result['message'] = t('Blocked domain');
return $result;
}
if (! $url) {
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$result['message'] = t('Connect URL missing.');
return $result;
}
$arr = array('url' => $url, 'contact' => array());
call_hooks('follow', $arr);
if (x($arr['contact'],'name')) {
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$ret = $arr['contact'];
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} else {
$ret = Probe::uri($url, $network, $uid, false);
}
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if (($network != '') && ($ret['network'] != $network)) {
logger('Expected network '.$network.' does not match actual network '.$ret['network']);
return result;
}
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if ($ret['network'] === NETWORK_DFRN) {
if ($interactive) {
if (strlen($a->path)) {
$myaddr = bin2hex(System::baseUrl() . '/profile/' . $a->user['nickname']);
} else {
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$myaddr = bin2hex($a->user['nickname'] . '@' . $a->get_hostname());
}
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goaway($ret['request'] . "&addr=$myaddr");
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// NOTREACHED
}
} elseif (Config::get('system','dfrn_only')) {
$result['message'] = t('This site is not configured to allow communications with other networks.') . EOL;
$result['message'] != t('No compatible communication protocols or feeds were discovered.') . EOL;
return $result;
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}
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// This extra param just confuses things, remove it
if ($ret['network'] === NETWORK_DIASPORA) {
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$ret['url'] = str_replace('?absolute=true','',$ret['url']);
}
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// do we have enough information?
if (! ((x($ret,'name')) && (x($ret,'poll')) && ((x($ret,'url')) || (x($ret,'addr'))))) {
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$result['message'] .= t('The profile address specified does not provide adequate information.') . EOL;
if (! x($ret,'poll')) {
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$result['message'] .= t('No compatible communication protocols or feeds were discovered.') . EOL;
}
if (! x($ret,'name')) {
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$result['message'] .= t('An author or name was not found.') . EOL;
}
if (! x($ret,'url')) {
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$result['message'] .= t('No browser URL could be matched to this address.') . EOL;
}
if (strpos($url,'@') !== false) {
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$result['message'] .= t('Unable to match @-style Identity Address with a known protocol or email contact.') . EOL;
$result['message'] .= t('Use mailto: in front of address to force email check.') . EOL;
}
return $result;
}
if ($ret['network'] === NETWORK_OSTATUS && Config::get('system','ostatus_disabled')) {
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$result['message'] .= t('The profile address specified belongs to a network which has been disabled on this site.') . EOL;
$ret['notify'] = '';
}
if (! $ret['notify']) {
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$result['message'] .= t('Limited profile. This person will be unable to receive direct/personal notifications from you.') . EOL;
}
$writeable = ((($ret['network'] === NETWORK_OSTATUS) && ($ret['notify'])) ? 1 : 0);
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$subhub = (($ret['network'] === NETWORK_OSTATUS) ? true : false);
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$hidden = (($ret['network'] === NETWORK_MAIL) ? 1 : 0);
if (in_array($ret['network'], array(NETWORK_MAIL, NETWORK_DIASPORA))) {
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$writeable = 1;
}
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// check if we already have a contact
// the poll url is more reliable than the profile url, as we may have
// indirect links or webfinger links
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$r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `poll` IN ('%s', '%s') AND `network` = '%s' LIMIT 1",
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intval($uid),
dbesc($ret['poll']),
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dbesc(normalise_link($ret['poll'])),
dbesc($ret['network'])
);
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if (!DBM::is_result($r))
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$r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `nurl` = '%s' AND `network` = '%s' LIMIT 1",
intval($uid), dbesc(normalise_link($url)), dbesc($ret['network'])
);
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if (DBM::is_result($r)) {
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// update contact
$new_relation = (($r[0]['rel'] == CONTACT_IS_FOLLOWER) ? CONTACT_IS_FRIEND : CONTACT_IS_SHARING);
$fields = array('rel' => $new_relation, 'subhub' => $subhub, 'readonly' => false);
dba::update('contact', $fields, array('id' => $r[0]['id']));
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} else {
$new_relation = ((in_array($ret['network'], array(NETWORK_MAIL))) ? CONTACT_IS_FRIEND : CONTACT_IS_SHARING);
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// create contact record
$r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `nurl`, `addr`, `alias`, `batch`, `notify`, `poll`, `poco`, `name`, `nick`, `network`, `pubkey`, `rel`, `priority`,
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`writable`, `hidden`, `blocked`, `readonly`, `pending`, `subhub` )
VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, %d, %d, 0, 0, 0, %d ) ",
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intval($uid),
dbesc(datetime_convert()),
dbesc($ret['url']),
dbesc(normalise_link($ret['url'])),
dbesc($ret['addr']),
dbesc($ret['alias']),
dbesc($ret['batch']),
dbesc($ret['notify']),
dbesc($ret['poll']),
dbesc($ret['poco']),
dbesc($ret['name']),
dbesc($ret['nick']),
dbesc($ret['network']),
dbesc($ret['pubkey']),
intval($new_relation),
intval($ret['priority']),
intval($writeable),
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intval($hidden),
intval($subhub)
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);
}
$r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `network` = '%s' AND `uid` = %d LIMIT 1",
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dbesc($ret['url']),
dbesc($ret['network']),
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intval($uid)
);
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if (! DBM::is_result($r)) {
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$result['message'] .= t('Unable to retrieve contact information.') . EOL;
return $result;
}
$contact = $r[0];
$contact_id = $r[0]['id'];
$result['cid'] = $contact_id;
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$def_gid = get_default_group($uid, $contact["network"]);
if (intval($def_gid)) {
group_add_member($uid, '', $contact_id, $def_gid);
}
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// Update the avatar
Contact::updateAvatar($ret['photo'], $uid, $contact_id);
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// pull feed and consume it, which should subscribe to the hub.
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Worker::add(PRIORITY_HIGH, "OnePoll", $contact_id, "force");
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$r = q("SELECT `contact`.*, `user`.* FROM `contact` INNER JOIN `user` ON `contact`.`uid` = `user`.`uid`
WHERE `user`.`uid` = %d AND `contact`.`self` LIMIT 1",
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intval($uid)
);
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if (DBM::is_result($r)) {
if (($contact['network'] == NETWORK_OSTATUS) && (strlen($contact['notify']))) {
// create a follow slap
$item = array();
$item['verb'] = ACTIVITY_FOLLOW;
$item['follow'] = $contact["url"];
$slap = OStatus::salmon($item, $r[0]);
slapper($r[0], $contact['notify'], $slap);
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}
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if ($contact['network'] == NETWORK_DIASPORA) {
$ret = Diaspora::sendShare($a->user, $contact);
logger('share returns: '.$ret);
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}
}
$result['success'] = true;
return $result;
}