Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
require_once('include/crypto.php');
require_once('include/items.php');
require_once('include/bb2diaspora.php');
function diaspora_get_contact_by_handle($uid,$handle) {
$r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND `uid` = %d AND `addr` = '%s' LIMIT 1",
dbesc(NETWORK_DIASPORA),
intval($uid),
dbesc($handle)
);
if($r && count($r))
return $r[0];
return false;
}
function find_diaspora_person_by_handle($handle) {
$r = q("select * from fcontact where network = '%s' and addr = '%s' limit 1",
dbesc(NETWORK_DIASPORA),
dbesc($handle)
);
if(count($r)) {
// update record occasionally so it doesn't get stale
$d = strtotime($r[0]['updated'] . ' +00:00');
if($d < strtotime('now - 14 days')) {
q("delete from fcontact where id = %d limit 1",
intval($r[0]['id'])
);
}
else
return $r[0];
}
require_once('include/Scrape.php');
$r = probe_url($handle, PROBE_DIASPORA);
if((count($r)) && ($r['network'] === NETWORK_DIASPORA)) {
add_fcontact($r);
return ($r);
}
return false;
}
function get_diaspora_key($uri) {
logger('Fetching diaspora key for: ' . $uri);
$r = find_diaspora_person_by_handle($uri);
if($r)
return $r['pubkey'];
return '';
}
function diaspora_msg_build($msg,$user,$contact,$prvkey,$pubkey) {
$a = get_app();
logger('diaspora_msg_build: ' . $msg, LOGGER_DATA);
$inner_aes_key = random_string(32);
$b_inner_aes_key = base64_encode($inner_aes_key);
$inner_iv = random_string(16);
$b_inner_iv = base64_encode($inner_iv);
$outer_aes_key = random_string(32);
$b_outer_aes_key = base64_encode($outer_aes_key);
$outer_iv = random_string(16);
$b_outer_iv = base64_encode($outer_iv);
$handle = 'acct:' . $user['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
$padded_data = pkcs5_pad($msg,16);
$inner_encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $padded_data, MCRYPT_MODE_CBC, $inner_iv);
$b64_data = base64_encode($inner_encrypted);
$b64url_data = base64url_encode($b64_data);
$b64url_stripped = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data);
$lines = str_split($b64url_stripped,60);
$data = implode("\n",$lines);
$data = $data . (($data[-1] != "\n") ? "\n" : '') ;
$type = 'application/atom+xml';
$encoding = 'base64url';
$alg = 'RSA-SHA256';
$signable_data = $data . '.' . base64url_encode($type) . "\n" . '.'
. base64url_encode($encoding) . "\n" . '.' . base64url_encode($alg) . "\n";
$signature = rsa_sign($signable_data,$prvkey);
$sig = base64url_encode($signature);
$decrypted_header = <<< EOT
<decrypted_header>
<iv>$b_inner_iv</iv>
<aes_key>$b_inner_aes_key</aes_key>
<author>
<name>{$user['username']}</name>
<uri>$handle</uri>
</author>
</decrypted_header>
EOT;
$decrypted_header = pkcs5_pad($decrypted_header,16);
$ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $outer_aes_key, $decrypted_header, MCRYPT_MODE_CBC, $outer_iv);
$outer_json = json_encode(array('iv' => $b_outer_iv,'key' => $b_outer_aes_key));
$encrypted_outer_key_bundle = '';
openssl_public_encrypt($outer_json,$encrypted_outer_key_bundle,$pubkey);
logger('outer_bundle_encrypt: ' . openssl_error_string());
$b64_encrypted_outer_key_bundle = base64_encode($encrypted_outer_key_bundle);
logger('outer_bundle: ' . $b64_encrypted_outer_key_bundle . ' key: ' . $pubkey);
$encrypted_header_json_object = json_encode(array('aes_key' => base64_encode($encrypted_outer_key_bundle),
'ciphertext' => base64_encode($ciphertext)));
$cipher_json = base64_encode($encrypted_header_json_object);
$encrypted_header = '<encrypted_header>' . $cipher_json . '</encrypted_header>';
$magic_env = <<< EOT
<?xml version='1.0' encoding='UTF-8'?>
<entry xmlns='http://www.w3.org/2005/Atom'>
$encrypted_header
<me:env xmlns:me="http://salmon-protocol.org/ns/magic-env">
<me:encoding>base64url</me:encoding>
<me:alg>RSA-SHA256</me:alg>
<me:data type="application/atom+xml">$data</me:data>
<me:sig>$sig</me:sig>
</me:env>
</entry>
EOT;
logger('diaspora_msg_build: magic_env: ' . $magic_env, LOGGER_DATA);
return $magic_env;
}
/**
*
* diaspora_decode($importer,$xml)
* array $importer -> from user table
* string $xml -> urldecoded Diaspora salmon
*
* Returns array
* 'message' -> decoded Diaspora XML message
* 'author' -> author diaspora handle
* 'key' -> author public key (converted to pkcs#8)
*
* Author and key are used elsewhere to save a lookup for verifying replies and likes
*/
function diaspora_decode($importer,$xml) {
$basedom = parse_xml_string($xml);
$atom = $basedom->children(NAMESPACE_ATOM1);
// Diaspora devs: This is kind of sucky - 'encrypted_header' does not belong in the atom namespace
$encrypted_header = json_decode(base64_decode($atom->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 = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $outer_key, $ciphertext, MCRYPT_MODE_CBC, $outer_iv);
$decrypted = pkcs5_unpad($decrypted);
/**
* $decrypted now contains something like
*
* <decrypted_header>
* <iv>8e+G2+ET8l5BPuW0sVTnQw==</iv>
* <aes_key>UvSMb4puPeB14STkcDWq+4QE302Edu15oaprAQSkLKU=</aes_key>
* <author>
* <name>Ryan Hughes</name>
* <uri>acct:galaxor@diaspora.pirateship.org</uri>
* </author>
* </decrypted_header>
*/
logger('decrypted: ' . $decrypted);
$idom = parse_xml_string($decrypted,false);
$inner_iv = base64_decode($idom->iv);
$inner_aes_key = base64_decode($idom->aes_key);
$author_link = str_replace('acct:','',$idom->author->uri);
$dom = $basedom->children(NAMESPACE_SALMON_ME);
// figure out where in the DOM tree our data is hiding
if($dom->provenance->data)
$base = $dom->provenance;
elseif($dom->env->data)
$base = $dom->env;
elseif($dom->data)
$base = $dom;
if(! $base) {
logger('mod-diaspora: unable to locate salmon data in xml ');
http_status_exit(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
$data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data);
// Add back the 60 char linefeeds
// This completely violates the entire principle of salmon magic signatures,
// which was to have a message signing format that was completely ambivalent to linefeeds
// and transport whitespace mangling, and base64 wrapping rules. Guess what? PHP and Ruby
// use different linelengths for base64 output.
$lines = str_split($data,60);
$data = implode("\n",$lines);
// 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;
// I can't even begin to tell you how sucky this is. Please read the spec.
$signed_data = $data . (($data[-1] != "\n") ? "\n" : '') . '.' . base64url_encode($type) . "\n" . '.' . base64url_encode($encoding) . "\n" . '.' . base64url_encode($alg) . "\n";
// decode the data
$data = base64url_decode($data);
// Now pull out the inner encrypted blob
$inner_encrypted = base64_decode($data);
$inner_decrypted =
$inner_decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $inner_encrypted, MCRYPT_MODE_CBC, $inner_iv);
$inner_decrypted = pkcs5_unpad($inner_decrypted);
if(! $author_link) {
logger('mod-diaspora: Could not retrieve author URI.');
http_status_exit(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('mod-diaspora: Fetching key for ' . $author_link );
$key = get_diaspora_key($author_link);
if(! $key) {
logger('mod-diaspora: Could not retrieve author key.');
http_status_exit(400);
}
$verify = rsa_verify($signed_data,$signature,$key);
if(! $verify) {
logger('mod-diaspora: Message did not verify. Discarding.');
http_status_exit(400);
}
logger('mod-diaspora: Message verified.');
return array('message' => $inner_decrypted, 'author' => $author_link, 'key' => $key);
}
function diaspora_request($importer,$xml) {
$sender_handle = unxmlify($xml->sender_handle);
$recipient_handle = unxmlify($xml->recipient_handle);
if(! $sender_handle || ! $recipient_handle)
return;
$contact = diaspora_get_contact_by_handle($importer['uid'],$sender_handle);
if($contact) {
// perhaps we were already sharing with this person. Now they're sharing with us.
// That makes us friends.
if($contact['rel'] == CONTACT_IS_FOLLOWER) {
q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d LIMIT 1",
intval(CONTACT_IS_FRIEND),
intval($contact['id']),
intval($importer['uid'])
);
}
// send notification?
return;
}
$ret = find_diaspora_person_by_handle($sender_handle);
if((! count($ret)) || ($ret['network'] != NETWORK_DIASPORA)) {
logger('diaspora_request: Cannot resolve diaspora handle ' . $sender_handle . ' for ' . $recipient_handle);
return;
}
$r = q("INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
VALUES ( %d, '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s',%d,%d) ",
intval($importer['uid']),
dbesc($ret['network']),
dbesc($ret['addr']),
datetime_convert(),
dbesc($ret['url']),
dbesc($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
$contact_record = diaspora_get_contact_by_handle($importer['uid'],$sender_handle);
$hash = random_string() . (string) time(); // Generate a confirm_key
if($contact_record) {
$ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime` )
VALUES ( %d, %d, %d, %d, '%s', '%s', '%s' )",
intval($importer['uid']),
intval($contact_record['id']),
0,
0,
dbesc( t('Sharing notification from Diaspora network')),
dbesc($hash),
dbesc(datetime_convert())
);
}
return;
}
function diaspora_post($importer,$xml) {
$guid = notags(unxmlify($xml->guid));
$diaspora_handle = notags(unxmlify($xml->diaspora_handle));
$contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
if(! $contact)
return;
if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
logger('diaspora_post: Ignoring this author.');
http_status_exit(202);
// NOTREACHED
}
$message_id = $diaspora_handle . ':' . $guid;
$r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
intval($importer['uid']),
dbesc($message_id),
dbesc($guid)
);
if(count($r))
return;
// allocate a guid on our system - we aren't fixing any collisions.
// we're ignoring them
$g = q("select * from guid where guid = '%s' limit 1",
dbesc($guid)
);
if(! count($g)) {
q("insert into guid ( guid ) values ( '%s' )",
dbesc($guid)
);
}
$created = unxmlify($xml->created_at);
$private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
$body = unxmlify($xml->raw_message);
require_once('library/HTMLPurifier.auto.php');
require_once('include/html2bbcode.php');
$maxlen = get_max_import_size();
if($maxlen && (strlen($body) > $maxlen))
$body = substr($body,0, $maxlen);
if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
$body = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
'[youtube]$1[/youtube]', $body);
$body = preg_replace('#<iframe[^>].+?' . 'http://www.youtube.com/embed/([A-Za-z0-9\-_=]+).+?</iframe>#s',
'[youtube]$1[/youtube]', $body);
$body = oembed_html2bbcode($body);
$config = HTMLPurifier_Config::createDefault();
$config->set('Cache.DefinitionImpl', null);
$purifier = new HTMLPurifier($config);
$body = $purifier->purify($body);
$body = html2bbcode($body);
}
$datarray = array();
$datarray['uid'] = $importer['uid'];
$datarray['contact-id'] = $contact['id'];
$datarray['wall'] = 0;
$datarray['guid'] = $guid;
$datarray['uri'] = $datarray['parent-uri'] = $message_id;
$datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
$datarray['private'] = $private;
$datarray['parent'] = 0;
$datarray['owner-name'] = $contact['name'];
$datarray['owner-link'] = $contact['url'];
$datarray['owner-avatar'] = $contact['thumb'];
$datarray['author-name'] = $contact['name'];
$datarray['author-link'] = $contact['url'];
$datarray['author-avatar'] = $contact['thumb'];
$datarray['body'] = $body;
item_store($datarray);
return;
}
function diaspora_comment($importer,$xml,$msg) {
$guid = notags(unxmlify($xml->guid));
$parent_guid = notags(unxmlify($xml->parent_guid));
$diaspora_handle = notags(unxmlify($xml->diaspora_handle));
$target_type = notags(unxmlify($xml->target_type));
$text = unxmlify($xml->text);
$author_signature = notags(unxmlify($xml->author_signature));
$parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
$text = $xml->text;
$contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
if(! $contact)
return;
if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
logger('diaspora_comment: Ignoring this author.');
http_status_exit(202);
// NOTREACHED
}
$r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
intval($importer['uid']),
dbesc($parent_guid)
);
if(! count($r)) {
logger('diaspora_comment: parent item not found: parent: ' . $parent_guid . ' item: ' . $guid);
return;
}
$parent_item = $r[0];
$author_signed_data = $guid . ';' . $parent_guid . ';' . $text . ';' . $diaspora_handle;
$author_signature = base64_decode($author_signature);
if(strcasecmp($diaspora_handle,$msg['author']) == 0) {
$person = $contact;
$key = $msg['key'];
}
else {
$person = find_diaspora_person_by_handle($diaspora_handle);
if(is_array($person) && x($person,'pubkey'))
$key = $person['pubkey'];
else {
logger('diaspora_comment: unable to find author details');
return;
}
}
if(! rsa_verify($author_signed_data,$author_signature,$key,'sha')) {
logger('diaspora_comment: verification failed.');
return;
}
if($parent_author_signature) {
$owner_signed_data = $guid . ';' . $parent_guid . ';' . $text . ';' . $msg['author'];
$parent_author_signature = base64_decode($parent_author_signature);
$key = $msg['key'];
if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha')) {
logger('diaspora_comment: owner verification failed.');
return;
}
}
// Phew! Everything checks out. Now create an item.
require_once('library/HTMLPurifier.auto.php');
require_once('include/html2bbcode.php');
$body = $text;
$maxlen = get_max_import_size();
if($maxlen && (strlen($body) > $maxlen))
$body = substr($body,0, $maxlen);
if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
$body = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
'[youtube]$1[/youtube]', $body);
$body = preg_replace('#<iframe[^>].+?' . 'http://www.youtube.com/embed/([A-Za-z0-9\-_=]+).+?</iframe>#s',
'[youtube]$1[/youtube]', $body);
$body = oembed_html2bbcode($body);
$config = HTMLPurifier_Config::createDefault();
$config->set('Cache.DefinitionImpl', null);
$purifier = new HTMLPurifier($config);
$body = $purifier->purify($body);
$body = html2bbcode($body);
}
$message_id = $diaspora_handle . ':' . $guid;
$datarray = array();
$datarray['uid'] = $importer['uid'];
$datarray['contact-id'] = $contact['id'];
$datarray['wall'] = $parent_item['wall'];
$datarray['gravity'] = GRAVITY_COMMENT;
$datarray['guid'] = $guid;
$datarray['uri'] = $message_id;
$datarray['parent-uri'] = $parent_item['uri'];
// No timestamps for comments? OK, we'll the use current time.
$datarray['created'] = $datarray['edited'] = datetime_convert();
$datarray['private'] = $parent_item['private'];
$datarray['owner-name'] = $contact['name'];
$datarray['owner-link'] = $contact['url'];
$datarray['owner-avatar'] = $contact['thumb'];
$datarray['author-name'] = $person['name'];
$datarray['author-link'] = $person['url'];
$datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
$datarray['body'] = $body;
$message_id = item_store($datarray);
if(! $parent_author_signature) {
q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
intval($message_id),
dbesc($author_signed_data),
dbesc(base64_encode($author_signature)),
dbesc($diaspora_handle)
);
}
// notify others
proc_run('php','include/notifier.php','comment',$message_id);
return;
}
function diaspora_photo($importer,$xml,$msg) {
$remote_photo_path = notags(unxmlify($xml->remote_photo_path));
$remote_photo_name = notags(unxmlify($xml->remote_photo_name));
$status_message_guid = notags(unxmlify($xml->status_message_guid));
$guid = notags(unxmlify($xml->guid));
$diaspora_handle = notags(unxmlify($xml->diaspora_handle));
$public = notags(unxmlify($xml->public));
$created_at = notags(unxmlify($xml_created_at));
$contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
if(! $contact)
return;
if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
logger('diaspora_photo: Ignoring this author.');
http_status_exit(202);
// NOTREACHED
}
$r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
intval($importer['uid']),
dbesc($status_message_guid)
);
if(! count($r)) {
logger('diaspora_photo: parent item not found: parent: ' . $parent_guid . ' item: ' . $guid);
return;
}
$parent_item = $r[0];
$link_text = '[img]' . $remote_photo_path . $remote_photo_name . '[/img]' . "\n";
$r = q("update item set `body` = '%s' where `id` = %d and `uid` = %d limit 1",
dbesc($link_text . $parent_item['body']),
intval($parent_item['id']),
intval($parent_item['uid'])
);
return;
}
function diaspora_like($importer,$xml,$msg) {
$a = get_app();
$guid = notags(unxmlify($xml->guid));
$parent_guid = notags(unxmlify($xml->parent_guid));
$diaspora_handle = notags(unxmlify($xml->diaspora_handle));
$target_type = notags(unxmlify($xml->target_type));
$positive = notags(unxmlify($xml->positive));
$author_signature = notags(unxmlify($xml->author_signature));
$parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
// likes on comments not supported here and likes on photos not supported by Diaspora
if($target_type !== 'Post')
return;
$contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
if(! $contact)
return;
if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
logger('diaspora_like: Ignoring this author.');
http_status_exit(202);
// NOTREACHED
}
$r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
intval($importer['uid']),
dbesc($parent_guid)
);
if(! count($r)) {
logger('diaspora_like: parent item not found: ' . $guid);
return;
}
$parent_item = $r[0];
$r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
intval($importer['uid']),
dbesc($guid)
);
if(count($r)) {
if($positive === 'true') {
logger('diaspora_like: duplicate like: ' . $guid);
return;
}
if($positive === 'false') {
q("UPDATE `item` SET `deleted` = 1 WHERE `id` = %d AND `uid` = %d LIMIT 1",
intval($r[0]['id']),
intval($importer['uid'])
);
// FIXME
// send notification via proc_run()
return;
}
}
if($positive === 'false') {
logger('diaspora_like: unlike received with no corresponding like');
return;
}
$author_signed_data = $guid . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $diaspora_handle;
$author_signature = base64_decode($author_signature);
if(strcasecmp($diaspora_handle,$msg['author']) == 0) {
$person = $contact;
$key = $msg['key'];
}
else {
$person = find_diaspora_person_by_handle($diaspora_handle);
if(is_array($person) && x($person,'pubkey'))
$key = $person['pubkey'];
else {
logger('diaspora_like: unable to find author details');
return;
}
}
if(! rsa_verify($author_signed_data,$author_signature,$key,'sha')) {
logger('diaspora_like: verification failed.');
return;
}
if($parent_author_signature) {
$owner_signed_data = $guid . ';' . $parent_guid . ';' . $target_type . ';' . $positive . ';' . $msg['author'];
$parent_author_signature = base64_decode($parent_author_signature);
$key = $msg['key'];
if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha')) {
logger('diaspora_like: owner verification failed.');
return;
}
}
// Phew! Everything checks out. Now create an item.
$uri = $diaspora_handle . ':' . $guid;
$activity = ACTIVITY_LIKE;
$post_type = (($parent_item['resource-id']) ? t('photo') : t('status'));
$objtype = (($parent_item['resource-id']) ? ACTIVITY_OBJ_PHOTO : ACTIVITY_OBJ_NOTE );
$link = xmlify('<link rel="alternate" type="text/html" href="' . $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $parent_item['id'] . '" />' . "\n") ;
$body = $parent_item['body'];
$obj = <<< EOT
<object>
<type>$objtype</type>
<local>1</local>
<id>{$parent_item['uri']}</id>
<link>$link</link>
<title></title>
<content>$body</content>
</object>
EOT;
$bodyverb = t('%1$s likes %2$s\'s %3$s');
$arr = array();
$arr['uri'] = $uri;
$arr['uid'] = $importer['uid'];
$arr['guid'] = $guid;
$arr['contact-id'] = $contact['id'];
$arr['type'] = 'activity';
$arr['wall'] = $parent_item['wall'];
$arr['gravity'] = GRAVITY_LIKE;
$arr['parent'] = $parent_item['id'];
$arr['parent-uri'] = $parent_item['uri'];
$arr['owner-name'] = $contact['name'];
$arr['owner-link'] = $contact['url'];
$arr['owner-avatar'] = $contact['thumb'];
$arr['author-name'] = $person['name'];
$arr['author-link'] = $person['url'];
$arr['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
$ulink = '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
$alink = '[url=' . $parent_item['author-link'] . ']' . $parent_item['author-name'] . '[/url]';
$plink = '[url=' . $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $parent_item['id'] . ']' . $post_type . '[/url]';
$arr['body'] = sprintf( $bodyverb, $ulink, $alink, $plink );
$arr['private'] = $parent_item['private'];
$arr['verb'] = $activity;
$arr['object-type'] = $objtype;
$arr['object'] = $obj;
$arr['visible'] = 1;
$arr['unseen'] = 1;
$arr['last-child'] = 0;
$message_id = item_store($arr);
if(! $parent_author_signature) {
q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
intval($message_id),
dbesc($author_signed_data),
dbesc(base64_encode($author_signature)),
dbesc($diaspora_handle)
);
}
// notify others
proc_run('php','include/notifier.php','comment',$message_id);
return;
}
function diaspora_retraction($importer,$xml) {
$guid = notags(unxmlify($xml->guid));
$diaspora_handle = notags(unxmlify($xml->diaspora_handle));
$type = notags(unxmlify($xml->type));
$contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
if(! $contact)
return;
if($type === 'Person') {
contact_remove($contact['id']);
}
elseif($type === 'Post') {
$r = q("select * from item where guid = '%s' and uid = %d limit 1",
dbesc('guid'),
intval($importer['uid'])
);
if(count($r)) {
if(link_compare($r[0]['author-link'],$contact['url'])) {
q("update item set `deleted` = 1, `changed` = '%s' where `id` = %d limit 1",
dbesc(datetime_convert()),
intval($r[0]['id'])
);
}
}
}
http_exit_status(202);
// NOTREACHED
}
function diaspora_share($me,$contact) {
$a = get_app();
$myaddr = $me['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
$theiraddr = $contact['addr'];
$tpl = get_markup_template('diaspora_share.tpl');
$msg = replace_macros($tpl, array(
'$sender' => $myaddr,
'$recipient' => $theiraddr
));
$slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])));
post_url($contact['notify'] . '/',$slap);
$return_code = $a->get_curl_code();
logger('diaspora_send_share: returns: ' . $return_code);
return $return_code;
}
function diaspora_unshare($me,$contact) {
$a = get_app();
$myaddr = $me['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
$tpl = get_markup_template('diaspora_retract.tpl');
$msg = replace_macros($tpl, array(
'$guid' => $me['guid'],
'$type' => 'Person',
'$handle' => $myaddr
));
$slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])));
post_url($contact['notify'] . '/',$slap);
$return_code = $a->get_curl_code();
logger('diaspora_send_unshare: returns: ' . $return_code);
return $return_code;
}
function diaspora_send_status($item,$owner,$contact) {
$a = get_app();
$myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
$theiraddr = $contact['addr'];
$images = array();
$body = $item['body'];
$cnt = preg_match_all('|\[img\](.*?)\[\/img\]|',$body,$matches,PREG_SET_ORDER);
if($cnt) {
foreach($matches as $mtch) {
$detail = array();
$detail['str'] = $mtch[0];
$detail['path'] = dirname($mtch[1]);
$detail['file'] = basename($mtch[1]);
$detail['guid'] = $item['guid'];
$detail['handle'] = $myaddr;
$images[] = $detail;
$body = str_replace($detail['str'],'',$body);
}
}
$body = xmlify(bb2diaspora($body));
$public = (($item['private']) ? 'false' : 'true');
require_once('include/datetime.php');
$created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d h:i:s \U\T\C');
$tpl = get_markup_template('diaspora_post.tpl');
$msg = replace_macros($tpl, array(
'$body' => $body,
'$guid' => $item['guid'],
'$handle' => xmlify($myaddr),
'$public' => $public,
'$created' => $created
));
logger('diaspora_send_status: base message: ' . $msg, LOGGER_DATA);
$slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
post_url($contact['notify'] . '/',$slap);
$return_code = $a->get_curl_code();
logger('diaspora_send_status: returns: ' . $return_code);
if(count($images)) {
diaspora_send_images($item,$owner,$contact,$images);
}
return $return_code;
}
function diaspora_send_images($item,$owner,$contact,$images) {
$a = get_app();
if(! count($images))
return;
$mysite = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://') + 3) . '/photo';
$tpl = get_markup_template('diaspora_photo.tpl');
foreach($images as $image) {
if(! stristr($image['path'],$mysite))
continue;
$resource = str_replace('.jpg','',$image['file']);
$resource = substr($resource,0,strpos($resource,'-'));
$r = q("select * from photo where `resource-id` = '%s' and `uid` = %d limit 1",
dbesc($resource),
intval($owner['uid'])
);
if(! count($r))
continue;
$public = (($r[0]['allow_cid'] || $r[0]['allow_gid'] || $r[0]['deny_cid'] || $r[0]['deny_gid']) ? 'false' : 'true' );
$msg = replace_macros($tpl,array(
'$path' => xmlify($image['path']),
'$filename' => xmlify($image['file']),
'$msg_guid' => xmlify($image['guid']),
'$guid' => xmlify($r[0]['guid']),
'$handle' => xmlify($image['handle']),
'$public' => xmlify($public),
'$created_at' => xmlify('UTC','UTC',$r[0]['created'],'Y-m-d h:i:s \U\T\C')
));
logger('diaspora_send_photo: base message: ' . $msg, LOGGER_DATA);
$slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
post_url($contact['notify'] . '/',$slap);
$return_code = $a->get_curl_code();
logger('diaspora_send_photo: returns: ' . $return_code);
}
}
function diaspora_send_followup($item,$owner,$contact) {
$a = get_app();
$myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
$theiraddr = $contact['addr'];
$p = q("select guid from item where parent = %d limit 1",
$item['parent']
);
if(count($p))
$parent_guid = $p[0]['guid'];
else
return;
if($item['verb'] === ACTIVITY_LIKE) {
$tpl = get_markup_template('diaspora_like.tpl');
$like = true;
$target_type = 'Post';
$positive = (($item['deleted']) ? 'false' : 'true');
}
else {
$tpl = get_markup_template('diaspora_comment.tpl');
$like = false;
}
$text = bb2diaspora($item['body']);
// sign it
if($like)
$signed_text = $item['guid'] . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $myaddr;
else
$signed_text = $item['guid'] . ';' . $parent_guid . ';' . $text . ';' . $myaddr;
$authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha'));
$msg = replace_macros($tpl,array(
'$guid' => xmlify($item['guid']),
'$parent_guid' => xmlify($parent_guid),
'$target_type' =>xmlify($target_type),
'$authorsig' => xmlify($authorsig),
'$body' => xmlify($text),
'$positive' => xmlify($positive),
'$handle' => xmlify($myaddr)
));
logger('diaspora_followup: base message: ' . $msg, LOGGER_DATA);
$slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
post_url($contact['notify'] . '/',$slap);
$return_code = $a->get_curl_code();
logger('diaspora_send_followup: returns: ' . $return_code);
return $return_code;
}
function diaspora_send_relay($item,$owner,$contact) {
$a = get_app();
$myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
$theiraddr = $contact['addr'];
$p = q("select guid from item where parent = %d limit 1",
$item['parent']
);
if(count($p))
$parent_guid = $p[0]['guid'];
else
return;
// fetch the original signature
$r = q("select * from sign where iid = %d limit 1",
intval($item['id'])
);
if(! count($r))
return;
$orig_sign = $r[0];
if($item['verb'] === ACTIVITY_LIKE) {
$tpl = get_markup_template('diaspora_like_relay.tpl');
$like = true;
$target_type = 'Post';
$positive = (($item['deleted']) ? 'false' : 'true');
}
else {
$tpl = get_markup_template('diaspora_comment_relay.tpl');
$like = false;
}
$text = bb2diaspora($item['body']);
// sign it
if($like)
$parent_signed_text = $orig_sign['signed_text'];
else
$parent_signed_text = $orig_sign['signed_text'];
$parentauthorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha'));
$msg = replace_macros($tpl,array(
'$guid' => xmlify($item['guid']),
'$parent_guid' => xmlify($parent_guid),
'$target_type' =>xmlify($target_type),
'$authorsig' => xmlify($orig_sign['signature']),
'$parentsig' => xmlify($parentauthorsig),
'$text' => xmlify($text),
'$positive' => xmlify($positive),
'$diaspora_handle' => xmlify($myaddr)
));
// fetch the original signature
$r = q("select * from sign where iid = %d limit 1",
intval($item['id'])
);
if(! count($r))
return;
logger('diaspora_relay_comment: base message: ' . $msg, LOGGER_DATA);
$slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
post_url($contact['notify'] . '/',$slap);
$return_code = $a->get_curl_code();
logger('diaspora_send_relay: returns: ' . $return_code);
return $return_code;
}
function diaspora_send_retraction($item,$owner,$contact) {
$a = get_app();
$myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
$tpl = get_markup_template('diaspora_retract.tpl');
$msg = replace_macros($tpl, array(
'$guid' => $item['guid'],
'$type' => 'Post',
'$handle' => $myaddr
));
$slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
post_url($contact['notify'] . '/',$slap);
$return_code = $a->get_curl_code();
logger('diaspora_send_retraction: returns: ' . $return_code);
return $return_code;
}