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');
require_once('include/contact_selectors.php');
require_once('include/queue_fn.php');
function diaspora_dispatch_public($msg) {
$enabled = intval(get_config('system','diaspora_enabled'));
if(! $enabled) {
logger('mod-diaspora: disabled');
return;
}
$r = q("SELECT `user`.* FROM `user` WHERE `user`.`uid` IN ( SELECT `contact`.`uid` FROM `contact` WHERE `contact`.`network` = '%s' AND `contact`.`addr` = '%s' ) AND `account_expired` = 0 ",
dbesc(NETWORK_DIASPORA),
dbesc($msg['author'])
);
if(count($r)) {
foreach($r as $rr) {
logger('diaspora_public: delivering to: ' . $rr['username']);
diaspora_dispatch($rr,$msg);
}
}
else
logger('diaspora_public: no subscribers');
}
function diaspora_dispatch($importer,$msg) {
$ret = 0;
$enabled = intval(get_config('system','diaspora_enabled'));
if(! $enabled) {
logger('mod-diaspora: disabled');
return;
}
// php doesn't like dashes in variable names
$msg['message'] = str_replace(
array('<activity_streams-photo>','</activity_streams-photo>'),
array('<asphoto>','</asphoto>'),
$msg['message']);
$parsed_xml = parse_xml_string($msg['message'],false);
$xmlbase = $parsed_xml->post;
logger('diaspora_dispatch: ' . print_r($xmlbase,true), LOGGER_DEBUG);
if($xmlbase->request) {
$ret = diaspora_request($importer,$xmlbase->request);
}
elseif($xmlbase->status_message) {
$ret = diaspora_post($importer,$xmlbase->status_message);
}
elseif($xmlbase->profile) {
$ret = diaspora_profile($importer,$xmlbase->profile);
}
elseif($xmlbase->comment) {
$ret = diaspora_comment($importer,$xmlbase->comment,$msg);
}
elseif($xmlbase->like) {
$ret = diaspora_like($importer,$xmlbase->like,$msg);
}
elseif($xmlbase->asphoto) {
$ret = diaspora_asphoto($importer,$xmlbase->asphoto);
}
elseif($xmlbase->reshare) {
$ret = diaspora_reshare($importer,$xmlbase->reshare);
}
elseif($xmlbase->retraction) {
$ret = diaspora_retraction($importer,$xmlbase->retraction,$msg);
}
elseif($xmlbase->signed_retraction) {
$ret = diaspora_signed_retraction($importer,$xmlbase->signed_retraction,$msg);
}
elseif($xmlbase->relayable_retraction) {
$ret = diaspora_signed_retraction($importer,$xmlbase->relayable_retraction,$msg);
}
elseif($xmlbase->photo) {
$ret = diaspora_photo($importer,$xmlbase->photo,$msg);
}
elseif($xmlbase->conversation) {
$ret = diaspora_conversation($importer,$xmlbase->conversation,$msg);
}
elseif($xmlbase->message) {
$ret = diaspora_message($importer,$xmlbase->message,$msg);
}
else {
logger('diaspora_dispatch: unknown message type: ' . print_r($xmlbase,true));
}
return $ret;
}
function diaspora_get_contact_by_handle($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) {
$update = false;
$r = q("select * from fcontact where network = '%s' and addr = '%s' limit 1",
dbesc(NETWORK_DIASPORA),
dbesc($handle)
);
if(count($r)) {
logger('find_diaspora_person_by handle: in cache ' . print_r($r,true), LOGGER_DEBUG);
// update record occasionally so it doesn't get stale
$d = strtotime($r[0]['updated'] . ' +00:00');
if($d > strtotime('now - 14 days'))
return $r[0];
$update = true;
}
logger('find_diaspora_person_by_handle: refresh',LOGGER_DEBUG);
require_once('include/Scrape.php');
$r = probe_url($handle, PROBE_DIASPORA);
if((count($r)) && ($r['network'] === NETWORK_DIASPORA)) {
add_fcontact($r,$update);
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 $r['pubkey'];
return '';
}
function diaspora_pubmsg_build($msg,$user,$contact,$prvkey,$pubkey) {
$a = get_app();
logger('diaspora_pubmsg_build: ' . $msg, LOGGER_DATA);
$handle = $user['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
// $b64_data = base64_encode($msg);
// $b64url_data = base64url_encode($b64_data);
$b64url_data = base64url_encode($msg);
$data = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data);
$type = 'application/xml';
$encoding = 'base64url';
$alg = 'RSA-SHA256';
$signable_data = $data . '.' . base64url_encode($type) . '.'
. base64url_encode($encoding) . '.' . base64url_encode($alg) ;
$signature = rsa_sign($signable_data,$prvkey);
$sig = base64url_encode($signature);
$magic_env = <<< EOT
<?xml version='1.0' encoding='UTF-8'?>
<diaspora xmlns="https://joindiaspora.com/protocol" xmlns:me="http://salmon-protocol.org/ns/magic-env" >
<header>
<author_id>$handle</author_id>
</header>
<me:env>
<me:encoding>base64url</me:encoding>
<me:alg>RSA-SHA256</me:alg>
<me:data type="application/xml">$data</me:data>
<me:sig>$sig</me:sig>
</me:env>
</diaspora>
EOT;
logger('diaspora_pubmsg_build: magic_env: ' . $magic_env, LOGGER_DATA);
return $magic_env;
}
function diaspora_msg_build($msg,$user,$contact,$prvkey,$pubkey,$public = false) {
$a = get_app();
if($public)
return diaspora_pubmsg_build($msg,$user,$contact,$prvkey,$pubkey);
logger('diaspora_msg_build: ' . $msg, LOGGER_DATA);
// without a public key nothing will work
if(! $pubkey) {
logger('diaspora_msg_build: pubkey missing: contact id: ' . $contact['id']);
return '';
}
$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 = $user['nickname'] . '@' . substr($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);
$data = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data);
$type = 'application/xml';
$encoding = 'base64url';
$alg = 'RSA-SHA256';
$signable_data = $data . '.' . base64url_encode($type) . '.'
. base64url_encode($encoding) . '.' . base64url_encode($alg) ;
$signature = rsa_sign($signable_data,$prvkey);
$sig = base64url_encode($signature);
$decrypted_header = <<< EOT
<decrypted_header>
<iv>$b_inner_iv</iv>
<aes_key>$b_inner_aes_key</aes_key>
<author_id>$handle</author_id>
</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);
$b64_encrypted_outer_key_bundle = base64_encode($encrypted_outer_key_bundle);
logger('outer_bundle: ' . $b64_encrypted_outer_key_bundle . ' key: ' . $pubkey, LOGGER_DATA);
$encrypted_header_json_object = json_encode(array('aes_key' => base64_encode($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'?>
<diaspora xmlns="https://joindiaspora.com/protocol" xmlns:me="http://salmon-protocol.org/ns/magic-env" >
$encrypted_header
<me:env>
<me:encoding>base64url</me:encoding>
<me:alg>RSA-SHA256</me:alg>
<me:data type="application/xml">$data</me:data>
<me:sig>$sig</me:sig>
</me:env>
</diaspora>
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) {
$public = false;
$basedom = parse_xml_string($xml);
$children = $basedom->children('https://joindiaspora.com/protocol');
if($children->header) {
$public = true;
$author_link = str_replace('acct:','',$children->header->author_id);
}
else {
$encrypted_header = json_decode(base64_decode($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 = 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>
***** OBSOLETE
* <author>
* <name>Ryan Hughes</name>
* <uri>acct:galaxor@diaspora.pirateship.org</uri>
* </author>
***** CURRENT
* <author_id>galaxor@diaspora.priateship.org</author_id>
***** END DIFFS
* </decrypted_header>
*/
logger('decrypted: ' . $decrypted, LOGGER_DEBUG);
$idom = parse_xml_string($decrypted,false);
$inner_iv = base64_decode($idom->iv);
$inner_aes_key = base64_decode($idom->aes_key);
$author_link = str_replace('acct:','',$idom->author_id);
}
$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);
// 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 = 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) {
$a = get_app();
$sender_handle = unxmlify($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 && $importer['page-flags'] != PAGE_COMMUNITY) {
q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d LIMIT 1",
intval(CONTACT_IS_FRIEND),
intval($contact['id']),
intval($importer['uid'])
);
}
// send notification
$r = q("SELECT `hide-friends` FROM `profile` WHERE `uid` = %d AND `is-default` = 1 LIMIT 1",
intval($importer['uid'])
);
if((count($r)) && (! $r[0]['hide-friends']) && (! $contact['hidden'])) {
require_once('include/items.php');
$self = q("SELECT * FROM `contact` WHERE `self` = 1 AND `uid` = %d LIMIT 1",
intval($importer['uid'])
);
// they are not CONTACT_IS_FOLLOWER anymore but that's what we have in the array
if(count($self) && $contact['rel'] == CONTACT_IS_FOLLOWER) {
$arr = array();
$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]';
$arr['body'] = sprintf( t('%1$s is now friends with %2$s'), $A, $B)."\n\n\n".$Bphoto;
$arr['object'] = '<object><type>' . ACTIVITY_OBJ_PERSON . '</type><title>' . $contact['name'] . '</title>'
. '<id>' . $contact['url'] . '/' . $contact['name'] . '</id>';
$arr['object'] .= '<link>' . xmlify('<link rel="alternate" type="text/html" href="' . $contact['url'] . '" />' . "\n");
$arr['object'] .= xmlify('<link rel="photo" type="image/jpeg" href="' . $contact['thumb'] . '" />' . "\n");
$arr['object'] .= '</link></object>' . "\n";
$arr['last-child'] = 1;
$arr['allow_cid'] = $user[0]['allow_cid'];
$arr['allow_gid'] = $user[0]['allow_gid'];
$arr['deny_cid'] = $user[0]['deny_cid'];
$arr['deny_gid'] = $user[0]['deny_gid'];
$i = item_store($arr);
if($i)
proc_run('php',"include/notifier.php","activity","$i");
}
}
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;
}
$batch = (($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']),
datetime_convert(),
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
$contact_record = diaspora_get_contact_by_handle($importer['uid'],$sender_handle);
if(! $contact_record) {
logger('diaspora_request: unable to locate newly created contact record.');
return;
}
$g = q("select def_gid from user where uid = %d limit 1",
intval($importer['uid'])
);
if($g && intval($g[0]['def_gid'])) {
require_once('include/group.php');
group_add_member($importer['uid'],'',$contact_record['id'],$g[0]['def_gid']);
}
if($importer['page-flags'] == PAGE_NORMAL) {
$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($contact_record['id']),
0,
0,
dbesc( t('Sharing notification from Diaspora network')),
dbesc($hash),
dbesc(datetime_convert())
);
}
else {
// automatic friend approval
require_once('include/Photo.php');
$photos = import_profile_photo($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)
$new_relation = CONTACT_IS_FRIEND;
else
$new_relation = CONTACT_IS_FOLLOWER;
$r = q("UPDATE `contact` SET
`photo` = '%s',
`thumb` = '%s',
`micro` = '%s',
`rel` = %d,
`name-date` = '%s',
`uri-date` = '%s',
`avatar-date` = '%s',
`blocked` = 0,
`pending` = 0
WHERE `id` = %d LIMIT 1
",
dbesc($photos[0]),
dbesc($photos[1]),
dbesc($photos[2]),
intval($new_relation),
dbesc(datetime_convert()),
dbesc(datetime_convert()),
dbesc(datetime_convert()),
intval($contact_record['id'])
);
$u = q("select * from user where uid = %d limit 1",intval($importer['uid']));
if($u)
$ret = diaspora_share($u[0],$contact_record);
}
return;
}
function diaspora_post_allow($importer,$contact) {
if(($contact['blocked']) || ($contact['readonly']))
return false;
if($contact['rel'] == CONTACT_IS_SHARING || $contact['rel'] == CONTACT_IS_FRIEND)
return true;
if($contact['rel'] == CONTACT_IS_FOLLOWER)
if($importer['page-flags'] == PAGE_COMMUNITY)
return true;
return false;
}
function diaspora_post($importer,$xml) {
$a = get_app();
$guid = notags(unxmlify($xml->guid));
$diaspora_handle = notags(unxmlify($xml->diaspora_handle));
$contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
if(! $contact)
return;
if(! diaspora_post_allow($importer,$contact)) {
logger('diaspora_post: Ignoring this author.');
return 202;
}
$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)) {
logger('diaspora_post: message exists: ' . $guid);
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);
$body = diaspora2bb($xml->raw_message);
$datarray = array();
$str_tags = '';
$tags = get_tags($body);
if(count($tags)) {
foreach($tags as $tag) {
if(strpos($tag,'#') === 0) {
if(strpos($tag,'[url='))
continue;
// don't link tags that are already embedded in links
if(preg_match('/\[(.*?)' . preg_quote($tag,'/') . '(.*?)\]/',$body))
continue;
if(preg_match('/\[(.*?)\]\((.*?)' . preg_quote($tag,'/') . '(.*?)\)/',$body))
continue;
$basetag = str_replace('_',' ',substr($tag,1));
$body = str_replace($tag,'#[url=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]',$body);
if(strlen($str_tags))
$str_tags .= ',';
$str_tags .= '#[url=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]';
continue;
}
}
}
$cnt = preg_match_all('/@\[url=(.*?)\[\/url\]/ism',$body,$matches,PREG_SET_ORDER);
if($cnt) {
foreach($matches as $mtch) {
if(strlen($str_tags))
$str_tags .= ',';
$str_tags .= '@[url=' . $mtch[1] . '[/url]';
}
}
$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;
$datarray['tag'] = $str_tags;
$datarray['app'] = 'Diaspora';
// if empty content it might be a photo that hasn't arrived yet. If a photo arrives, we'll make it visible.
$datarray['visible'] = ((strlen($body)) ? 1 : 0);
$message_id = item_store($datarray);
if($message_id) {
q("update item set plink = '%s' where id = %d limit 1",
dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
intval($message_id)
);
}
return;
}
function diaspora_reshare($importer,$xml) {
logger('diaspora_reshare: init: ' . print_r($xml,true));
$a = get_app();
$guid = notags(unxmlify($xml->guid));
$diaspora_handle = notags(unxmlify($xml->diaspora_handle));
$contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
if(! $contact)
return;
if(! diaspora_post_allow($importer,$contact)) {
logger('diaspora_reshare: Ignoring this author: ' . $diaspora_handle . ' ' . print_r($xml,true));
return 202;
}
$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)) {
logger('diaspora_reshare: message exists: ' . $guid);
return;
}
$orig_author = notags(unxmlify($xml->root_diaspora_id));
$orig_guid = notags(unxmlify($xml->root_guid));
$source_url = 'https://' . substr($orig_author,strpos($orig_author,'@')+1) . '/p/' . $orig_guid . '.xml';
$x = fetch_url($source_url);
if(! $x)
$x = fetch_url(str_replace('https://','http://',$source_url));
if(! $x) {
logger('diaspora_reshare: unable to fetch source url ' . $source_url);
return;
}
logger('diaspora_reshare: source: ' . $x);
$x = str_replace(array('<activity_streams-photo>','</activity_streams-photo>'),array('<asphoto>','</asphoto>'),$x);
$source_xml = parse_xml_string($x,false);
if(strlen($source_xml->post->asphoto->objectId) && ($source_xml->post->asphoto->objectId != 0) && ($source_xml->post->asphoto->image_url)) {
$body = '[url=' . notags(unxmlify($source_xml->post->asphoto->image_url)) . '][img]' . notags(unxmlify($source_xml->post->asphoto->objectId)) . '[/img][/url]' . "\n";
$body = scale_external_images($body,false);
}
elseif($source_xml->post->asphoto->image_url) {
$body = '[img]' . notags(unxmlify($source_xml->post->asphoto->image_url)) . '[/img]' . "\n";
$body = scale_external_images($body);
}
elseif($source_xml->post->status_message) {
$body = diaspora2bb($source_xml->post->status_message->raw_message);
$body = scale_external_images($body);
}
else {
logger('diaspora_reshare: no reshare content found: ' . print_r($source_xml,true));
return;
}
if(! $body) {
logger('diaspora_reshare: empty body: source= ' . $x);
return;
}
$person = find_diaspora_person_by_handle($orig_author);
if(is_array($person) && x($person,'name') && x($person,'url'))
$details = '[url=' . $person['url'] . ']' . $person['name'] . '[/url]';
else
$details = $orig_author;
$prefix = '&#x2672; ' . $details . "\n";
// 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);
$datarray = array();
$str_tags = '';
$tags = get_tags($body);
if(count($tags)) {
foreach($tags as $tag) {
if(strpos($tag,'#') === 0) {
if(strpos($tag,'[url='))
continue;
// don't link tags that are already embedded in links
if(preg_match('/\[(.*?)' . preg_quote($tag,'/') . '(.*?)\]/',$body))
continue;
if(preg_match('/\[(.*?)\]\((.*?)' . preg_quote($tag,'/') . '(.*?)\)/',$body))
continue;
$basetag = str_replace('_',' ',substr($tag,1));
$body = str_replace($tag,'#[url=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]',$body);
if(strlen($str_tags))
$str_tags .= ',';
$str_tags .= '#[url=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]';
continue;
}
}
}
$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'] = $prefix . $body;
$datarray['tag'] = $str_tags;
$datarray['app'] = 'Diaspora';
$message_id = item_store($datarray);
if($message_id) {
q("update item set plink = '%s' where id = %d limit 1",
dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
intval($message_id)
);
}
return;
}
function diaspora_asphoto($importer,$xml) {
logger('diaspora_asphoto called');
$a = get_app();
$guid = notags(unxmlify($xml->guid));
$diaspora_handle = notags(unxmlify($xml->diaspora_handle));
$contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
if(! $contact)
return;
if(! diaspora_post_allow($importer,$contact)) {
logger('diaspora_asphoto: Ignoring this author.');
return 202;
}
$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)) {
logger('diaspora_asphoto: message exists: ' . $guid);
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);
if(strlen($xml->objectId) && ($xml->objectId != 0) && ($xml->image_url)) {
$body = '[url=' . notags(unxmlify($xml->image_url)) . '][img]' . notags(unxmlify($xml->objectId)) . '[/img][/url]' . "\n";
$body = scale_external_images($body,false);
}
elseif($xml->image_url) {
$body = '[img]' . notags(unxmlify($xml->image_url)) . '[/img]' . "\n";
$body = scale_external_images($body);
}
else {
logger('diaspora_asphoto: no photo url found.');
return;
}
$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;
$datarray['app'] = 'Diaspora/Cubbi.es';
$message_id = item_store($datarray);
if($message_id) {
q("update item set plink = '%s' where id = %d limit 1",
dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
intval($message_id)
);
}
return;
}
function diaspora_comment($importer,$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));
$text = unxmlify($xml->text);
$author_signature = notags(unxmlify($xml->author_signature));
$parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
$contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
if(! $contact) {
logger('diaspora_comment: cannot find contact: ' . $msg['author']);
return;
}
if(! diaspora_post_allow($importer,$contact)) {
logger('diaspora_comment: Ignoring this author.');
return 202;
}
$r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
intval($importer['uid']),
dbesc($guid)
);
if(count($r)) {
logger('diaspora_comment: our comment just got relayed back to us (or there was a guid collision) : ' . $guid);
return;
}
$r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
intval($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];
/* How Diaspora performs comment signature checking:
- If an item has been sent by the comment author to the top-level post owner to relay on
to the rest of the contacts on the top-level post, the top-level post owner should check
the author_signature, then create a parent_author_signature before relaying the comment on
- If an item has been relayed on by the top-level post owner, the contacts who receive it
check only the parent_author_signature. Basically, they trust that the top-level post
owner has already verified the authenticity of anything he/she sends out
- In either case, the signature that get checked is the signature created by the person
who sent the salmon
*/
$signed_data = $guid . ';' . $parent_guid . ';' . $text . ';' . $diaspora_handle;
$key = $msg['key'];
if($parent_author_signature) {
// If a parent_author_signature exists, then we've received the comment
// relayed from the top-level post owner. There's no need to check the
// author_signature if the parent_author_signature is valid
$parent_author_signature = base64_decode($parent_author_signature);
if(! rsa_verify($signed_data,$parent_author_signature,$key,'sha256')) {
logger('diaspora_comment: top-level owner verification failed.');
return;
}
}
else {
// If there's no parent_author_signature, then we've received the comment
// from the comment creator. In that case, the person is commenting on
// our post, so he/she must be a contact of ours and his/her public key
// should be in $msg['key']
$author_signature = base64_decode($author_signature);
if(! rsa_verify($signed_data,$author_signature,$key,'sha256')) {
logger('diaspora_comment: comment author verification failed.');
return;
}
}
// Phew! Everything checks out. Now create an item.
// Find the original comment author information.
// We need this to make sure we display the comment author
// information (name and avatar) correctly.
if(strcasecmp($diaspora_handle,$msg['author']) == 0)
$person = $contact;
else {
$person = find_diaspora_person_by_handle($diaspora_handle);
if(! is_array($person)) {
logger('diaspora_comment: unable to find author details');
return;
}
}
$body = diaspora2bb($text);
$message_id = $diaspora_handle . ':' . $guid;
$datarray = array();
$str_tags = '';
$tags = get_tags($body);
if(count($tags)) {
foreach($tags as $tag) {
if(strpos($tag,'#') === 0) {
if(strpos($tag,'[url='))
continue;
// don't link tags that are already embedded in links
if(preg_match('/\[(.*?)' . preg_quote($tag,'/') . '(.*?)\]/',$body))
continue;
if(preg_match('/\[(.*?)\]\((.*?)' . preg_quote($tag,'/') . '(.*?)\)/',$body))
continue;
$basetag = str_replace('_',' ',substr($tag,1));
$body = str_replace($tag,'#[url=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]',$body);
if(strlen($str_tags))
$str_tags .= ',';
$str_tags .= '#[url=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]';
continue;
}
}
}
$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'] = $parent_item['owner-name'];
$datarray['owner-link'] = $parent_item['owner-link'];
$datarray['owner-avatar'] = $parent_item['owner-avatar'];
$datarray['author-name'] = $person['name'];
$datarray['author-link'] = $person['url'];
$datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
$datarray['body'] = $body;
$datarray['tag'] = $str_tags;
// We can't be certain what the original app is if the message is relayed.
if(($parent_item['origin']) && (! $parent_author_signature))
$datarray['app'] = 'Diaspora';
$message_id = item_store($datarray);
if($message_id) {
q("update item set plink = '%s' where id = %d limit 1",
dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
intval($message_id)
);
}
if(($parent_item['origin']) && (! $parent_author_signature)) {
q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
intval($message_id),
dbesc($author_signed_data),
dbesc(base64_encode($author_signature)),
dbesc($diaspora_handle)
);
// if the message isn't already being relayed, notify others
// the existence of parent_author_signature means the parent_author or owner
// is already relaying.
proc_run('php','include/notifier.php','comment',$message_id);
}
$myconv = q("SELECT `author-link`, `author-avatar`, `parent` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 AND `deleted` = 0 ",
dbesc($parent_item['uri']),
intval($importer['uid'])
);
if(count($myconv)) {
$importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
foreach($myconv as $conv) {
// now if we find a match, it means we're in this conversation
if(! link_compare($conv['author-link'],$importer_url))
continue;
require_once('include/enotify.php');
$conv_parent = $conv['parent'];
notification(array(
'type' => NOTIFY_COMMENT,
'notify_flags' => $importer['notify-flags'],
'language' => $importer['language'],
'to_name' => $importer['username'],
'to_email' => $importer['email'],
'uid' => $importer['uid'],
'item' => $datarray,
'link' => $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id,
'source_name' => $datarray['author-name'],
'source_link' => $datarray['author-link'],
'source_photo' => $datarray['author-avatar'],
'verb' => ACTIVITY_POST,
'otype' => 'item',
'parent' => $conv_parent,
));
// only send one notification
break;
}
}
return;
}
function diaspora_conversation($importer,$xml,$msg) {
$a = get_app();
$guid = notags(unxmlify($xml->guid));
$subject = notags(unxmlify($xml->subject));
$diaspora_handle = notags(unxmlify($xml->diaspora_handle));
$participant_handles = notags(unxmlify($xml->participant_handles));
$created_at = datetime_convert('UTC','UTC',notags(unxmlify($xml->created_at)));
$parent_uri = $diaspora_handle . ':' . $guid;
$messages = $xml->message;
if(! count($messages)) {
logger('diaspora_conversation: empty conversation');
return;
}
$contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
if(! $contact) {
logger('diaspora_conversation: cannot find contact: ' . $msg['author']);
return;
}
if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
logger('diaspora_conversation: Ignoring this author.');
return 202;
}
$conversation = null;
$c = q("select * from conv where uid = %d and guid = '%s' limit 1",
intval($importer['uid']),
dbesc($guid)
);
if(count($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($guid),
dbesc($diaspora_handle),
dbesc(datetime_convert('UTC','UTC',$created_at)),
dbesc(datetime_convert()),
dbesc($subject),
dbesc($participant_handles)
);
if($r)
$c = q("select * from conv where uid = %d and guid = '%s' limit 1",
intval($importer['uid']),
dbesc($guid)
);
if(count($c))
$conversation = $c[0];
}
if(! $conversation) {
logger('diaspora_conversation: unable to create conversation.');
return;
}
foreach($messages as $mesg) {
$reply = 0;
$msg_guid = notags(unxmlify($mesg->guid));
$msg_parent_guid = notags(unxmlify($mesg->parent_guid));
$msg_parent_author_signature = notags(unxmlify($mesg->parent_author_signature));
$msg_author_signature = notags(unxmlify($mesg->author_signature));
$msg_text = unxmlify($mesg->text);
$msg_created_at = datetime_convert('UTC','UTC',notags(unxmlify($mesg->created_at)));
$msg_diaspora_handle = notags(unxmlify($mesg->diaspora_handle));
$msg_conversation_guid = notags(unxmlify($mesg->conversation_guid));
if($msg_conversation_guid != $guid) {
logger('diaspora_conversation: message conversation guid does not belong to the current conversation. ' . $xml);
continue;
}
$body = diaspora2bb($msg_text);
$message_id = $msg_diaspora_handle . ':' . $msg_guid;
$author_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($mesg->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
$author_signature = base64_decode($msg_author_signature);
if(strcasecmp($msg_diaspora_handle,$msg['author']) == 0) {
$person = $contact;
$key = $msg['key'];
}
else {
$person = find_diaspora_person_by_handle($msg_diaspora_handle);
if(is_array($person) && x($person,'pubkey'))
$key = $person['pubkey'];
else {
logger('diaspora_conversation: unable to find author details');
continue;
}
}
if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
logger('diaspora_conversation: verification failed.');
continue;
}
if($msg_parent_author_signature) {
$owner_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($mesg->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
$parent_author_signature = base64_decode($msg_parent_author_signature);
$key = $msg['key'];
if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha256')) {
logger('diaspora_conversation: owner verification failed.');
continue;
}
}
$r = q("select id from mail where `uri` = '%s' limit 1",
dbesc($message_id)
);
if(count($r)) {
logger('diaspora_conversation: duplicate message already delivered.', LOGGER_DEBUG);
continue;
}
q("insert into mail ( `uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`) values ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
intval($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($message_id),
dbesc($parent_uri),
dbesc($msg_created_at)
);
q("update conv set updated = '%s' where id = %d limit 1",
dbesc(datetime_convert()),
intval($conversation['id'])
);
require_once('include/enotify.php');
notification(array(
'type' => NOTIFY_MAIL,
'notify_flags' => $importer['notify-flags'],
'language' => $importer['language'],
'to_name' => $importer['username'],
'to_email' => $importer['email'],
'uid' =>$importer['importer_uid'],
'item' => array('subject' => $subject, 'body' => $body),
'source_name' => $person['name'],
'source_link' => $person['url'],
'source_photo' => $person['thumb'],
'verb' => ACTIVITY_POST,
'otype' => 'mail'
));
}
return;
}
function diaspora_message($importer,$xml,$msg) {
$a = get_app();
$msg_guid = notags(unxmlify($xml->guid));
$msg_parent_guid = notags(unxmlify($xml->parent_guid));
$msg_parent_author_signature = notags(unxmlify($xml->parent_author_signature));
$msg_author_signature = notags(unxmlify($xml->author_signature));
$msg_text = unxmlify($xml->text);
$msg_created_at = datetime_convert('UTC','UTC',notags(unxmlify($xml->created_at)));
$msg_diaspora_handle = notags(unxmlify($xml->diaspora_handle));
$msg_conversation_guid = notags(unxmlify($xml->conversation_guid));
$parent_uri = $diaspora_handle . ':' . $msg_parent_guid;
$contact = diaspora_get_contact_by_handle($importer['uid'],$msg_diaspora_handle);
if(! $contact) {
logger('diaspora_message: cannot find contact: ' . $msg_diaspora_handle);
return;
}
if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
logger('diaspora_message: Ignoring this author.');
return 202;
}
$conversation = null;
$c = q("select * from conv where uid = %d and guid = '%s' limit 1",
intval($importer['uid']),
dbesc($msg_conversation_guid)
);
if(count($c))
$conversation = $c[0];
else {
logger('diaspora_message: conversation not available.');
return;
}
$reply = 0;
$body = diaspora2bb($msg_text);
$message_id = $msg_diaspora_handle . ':' . $msg_guid;
$author_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($xml->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
$author_signature = base64_decode($msg_author_signature);
$person = find_diaspora_person_by_handle($msg_diaspora_handle);
if(is_array($person) && x($person,'pubkey'))
$key = $person['pubkey'];
else {
logger('diaspora_message: unable to find author details');
return;
}
if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
logger('diaspora_message: verification failed.');
return;
}
$r = q("select id from mail where `uri` = '%s' and uid = %d limit 1",
dbesc($message_id),
intval($importer['uid'])
);
if(count($r)) {
logger('diaspora_message: duplicate message already delivered.', LOGGER_DEBUG);
return;
}
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($contact['id']),
dbesc($conversation['subject']),
dbesc($body),
0,
1,
dbesc($message_id),
dbesc($parent_uri),
dbesc($msg_created_at)
);
q("update conv set updated = '%s' where id = %d limit 1",
dbesc(datetime_convert()),
intval($conversation['id'])
);
return;
}
function diaspora_photo($importer,$xml,$msg) {
$a = get_app();
logger('diaspora_photo: init',LOGGER_DEBUG);
$remote_photo_path = notags(unxmlify($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));
logger('diaspora_photo: status_message_guid: ' . $status_message_guid, LOGGER_DEBUG);
$contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
if(! $contact) {
logger('diaspora_photo: contact record not found: ' . $msg['author'] . ' handle: ' . $diaspora_handle);
return;
}
if(! diaspora_post_allow($importer,$contact)) {
logger('diaspora_photo: Ignoring this author.');
return 202;
}
$r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
intval($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";
$link_text = scale_external_images($link_text);
if(strpos($parent_item['body'],$link_text) === false) {
$r = q("update item set `body` = '%s', `visible` = 1 where `id` = %d and `uid` = %d limit 1",
dbesc($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) {
logger('diaspora_like: cannot find contact: ' . $msg['author']);
return;
}
if(! diaspora_post_allow($importer,$contact)) {
logger('diaspora_like: Ignoring this author.');
return 202;
}
$r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
intval($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: ' . $guid);
return;
}
// Note: I don't think "Like" objects with positive = "false" are ever actually used
// It looks like "RelayableRetractions" are used for "unlike" instead
if($positive === 'false') {
logger('diaspora_like: received a like with positive set to "false"...ignoring');
/* q("UPDATE `item` SET `deleted` = 1 WHERE `id` = %d AND `uid` = %d LIMIT 1",
intval($r[0]['id']),
intval($importer['uid'])
);*/
// FIXME--actually don't unless it turns out that Diaspora does indeed send out "false" likes
// send notification via proc_run()
return;
}
}
// Note: I don't think "Like" objects with positive = "false" are ever actually used
// It looks like "RelayableRetractions" are used for "unlike" instead
if($positive === 'false') {
logger('diaspora_like: received a like with positive set to "false"');
logger('diaspora_like: unlike received with no corresponding like...ignoring');
return;
}
/* How Diaspora performs "like" signature checking:
- If an item has been sent by the like author to the top-level post owner to relay on
to the rest of the contacts on the top-level post, the top-level post owner should check
the author_signature, then create a parent_author_signature before relaying the like on
- If an item has been relayed on by the top-level post owner, the contacts who receive it
check only the parent_author_signature. Basically, they trust that the top-level post
owner has already verified the authenticity of anything he/she sends out
- In either case, the signature that get checked is the signature created by the person
who sent the salmon
*/
$signed_data = $guid . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $diaspora_handle;
$key = $msg['key'];
if($parent_author_signature) {
// If a parent_author_signature exists, then we've received the like
// relayed from the top-level post owner. There's no need to check the
// author_signature if the parent_author_signature is valid
$parent_author_signature = base64_decode($parent_author_signature);
if(! rsa_verify($signed_data,$parent_author_signature,$key,'sha256')) {
logger('diaspora_like: top-level owner verification failed.');
return;
}
}
else {
// If there's no parent_author_signature, then we've received the like
// from the like creator. In that case, the person is "like"ing
// our post, so he/she must be a contact of ours and his/her public key
// should be in $msg['key']
$author_signature = base64_decode($author_signature);
if(! rsa_verify($signed_data,$author_signature,$key,'sha256')) {
logger('diaspora_like: like creator verification failed.');
return;
}
}
// Phew! Everything checks out. Now create an item.
// Find the original comment author information.
// We need this to make sure we display the comment author
// information (name and avatar) correctly.
if(strcasecmp($diaspora_handle,$msg['author']) == 0)
$person = $contact;
else {
$person = find_diaspora_person_by_handle($diaspora_handle);
if(! is_array($person)) {
logger('diaspora_like: unable to find author details');
return;
}
}
$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'] = $parent_item['name'];
$arr['owner-link'] = $parent_item['url'];
$arr['owner-avatar'] = $parent_item['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['app'] = 'Diaspora';
$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($message_id) {
q("update item set plink = '%s' where id = %d limit 1",
dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
intval($message_id)
);
}
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($diaspora_handle)
);
}
// if the message isn't already being relayed, notify others
// the existence of parent_author_signature means the parent_author or owner
// is already relaying. The parent_item['origin'] indicates the message was created on our system
if(($parent_item['origin']) && (! $parent_author_signature))
proc_run('php','include/notifier.php','comment',$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') {
require_once('include/Contact.php');
contact_remove($contact['id']);
}
elseif($type === 'Post') {
$r = q("select * from item where guid = '%s' and uid = %d and not file like '%%[%%' limit 1",
dbesc('guid'),
intval($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'])
);
}
}
}
return 202;
// NOTREACHED
}
function diaspora_signed_retraction($importer,$xml,$msg) {
$guid = notags(unxmlify($xml->target_guid));
$diaspora_handle = notags(unxmlify($xml->sender_handle));
$type = notags(unxmlify($xml->target_type));
$sig = notags(unxmlify($xml->target_author_signature));
$parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
$contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
if(! $contact) {
logger('diaspora_signed_retraction: no contact');
return;
}
$signed_data = $guid . ';' . $type ;
$key = $msg['key'];
/* How Diaspora performs relayable_retraction signature checking:
- If an item has been sent by the item author to the top-level post owner to relay on
to the rest of the contacts on the top-level post, the top-level post owner checks
the author_signature, then creates a parent_author_signature before relaying the item on
- If an item has been relayed on by the top-level post owner, the contacts who receive it
check only the parent_author_signature. Basically, they trust that the top-level post
owner has already verified the authenticity of anything he/she sends out
- In either case, the signature that get checked is the signature created by the person
who sent the salmon
*/
if($parent_author_signature) {
$parent_author_signature = base64_decode($parent_author_signature);
if(! rsa_verify($signed_data,$parent_author_signature,$key,'sha256')) {
logger('diaspora_signed_retraction: top-level post owner verification failed');
return;
}
}
else {
$sig_decode = base64_decode($sig);
if(! rsa_verify($signed_data,$sig_decode,$key,'sha256')) {
logger('diaspora_signed_retraction: retraction owner verification failed.' . print_r($msg,true));
return;
}
}
if($type === 'StatusMessage' || $type === 'Comment' || $type === 'Like') {
$r = q("select * from item where guid = '%s' and uid = %d and not file like '%%[%%' limit 1",
dbesc($guid),
intval($importer['uid'])
);
if(count($r)) {
if(link_compare($r[0]['author-link'],$contact['url'])) {
q("update item set `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = '' where `id` = %d limit 1",
dbesc(datetime_convert()),
dbesc(datetime_convert()),
intval($r[0]['id'])
);
// Now check if the retraction needs to be relayed by us
//
// The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always
// return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent.
// The only item with `parent` and `id` as the parent id is the parent item.
$p = q("select origin from item where parent = %d and id = %d limit 1",
$r[0]['parent'],
$r[0]['parent']
);
if(count($p)) {
if(($p[0]['origin']) && (! $parent_author_signature)) {
q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
$r[0]['id'],
dbesc($signed_data),
dbesc($sig),
dbesc($diaspora_handle)
);
// the existence of parent_author_signature would have meant the parent_author or owner
// is already relaying.
logger('diaspora_signed_retraction: relaying relayable_retraction');
proc_run('php','include/notifier.php','relayable_retraction',$r[0]['id']);
}
}
}
}
}
else
logger('diaspora_signed_retraction: unknown type: ' . $type);
return 202;
// NOTREACHED
}
function diaspora_profile($importer,$xml) {
$a = get_app();
$diaspora_handle = notags(unxmlify($xml->diaspora_handle));
$contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
if(! $contact)
return;
if($contact['blocked']) {
logger('diaspora_post: Ignoring this author.');
return 202;
}
$name = unxmlify($xml->first_name) . ((strlen($xml->last_name)) ? ' ' . unxmlify($xml->last_name) : '');
$image_url = unxmlify($xml->image_url);
$birthday = unxmlify($xml->birthday);
$r = q("SELECT DISTINCT ( `resource-id` ) FROM `photo` WHERE `uid` = %d AND `contact-id` = %d AND `album` = 'Contact Photos' ",
intval($importer['uid']),
intval($contact['id'])
);
$oldphotos = ((count($r)) ? $r : null);
require_once('include/Photo.php');
$images = import_profile_photo($image_url,$importer['uid'],$contact['id']);
// Generic birthday. We don't know the timezone. The year is irrelevant.
$birthday = str_replace('1000','1901',$birthday);
$birthday = datetime_convert('UTC','UTC',$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'];
// TODO: update name on item['author-name'] if the name changed. See consume_feed()
// Not doing this currently because D* protocol is scheduled for revision soon.
$r = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s', `avatar-date` = '%s' , `bd` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
dbesc($name),
dbesc(datetime_convert()),
dbesc($images[0]),
dbesc($images[1]),
dbesc($images[2]),
dbesc(datetime_convert()),
dbesc($birthday),
intval($contact['id']),
intval($importer['uid'])
);
if($r) {
if($oldphotos) {
foreach($oldphotos as $ph) {
q("DELETE FROM `photo` WHERE `uid` = %d AND `contact-id` = %d AND `album` = 'Contact Photos' AND `resource-id` = '%s' ",
intval($importer['uid']),
intval($contact['id']),
dbesc($ph['resource-id'])
);
}
}
}
return;
}
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'])));
return(diaspora_transmit($owner,$contact,$slap, false));
}
function diaspora_unshare($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'])));
return(diaspora_transmit($owner,$contact,$slap, false));
}
function diaspora_send_status($item,$owner,$contact,$public_batch = false) {
$a = get_app();
$myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
$theiraddr = $contact['addr'];
$images = array();
$title = $item['title'];
$body = $item['body'];
/*
// We're trying to match Diaspora's split message/photo protocol but
// all the photos are displayed on D* as links and not img's - even
// though we're sending pretty much precisely what they send us when
// doing the same operation.
// Commented out for now, we'll use bb2diaspora to convert photos to markdown
// which seems to get through intact.
$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'],$mtch[1],$body);
}
}
*/
if(strlen($title))
$body = "[b]".html_entity_decode($title)."[/b]\n\n".$body;
$body = xmlify(html_entity_decode(bb2diaspora($body)));
if($item['attach']) {
$cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism',$item['attach'],$matches,PREG_SET_ORDER);
if(cnt) {
$body .= "\n" . t('Attachments:') . "\n";
foreach($matches as $mtch) {
$body .= '[' . $mtch[3] . '](' . $mtch[1] . ')' . "\n";
}
}
}
$public = (($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: ' . $owner['username'] . ' -> ' . $contact['name'] . ' base message: ' . $msg, LOGGER_DATA);
$slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
$return_code = diaspora_transmit($owner,$contact,$slap,$public_batch);
if(count($images)) {
diaspora_send_images($item,$owner,$contact,$images,$public_batch);
}
return $return_code;
}
function diaspora_send_images($item,$owner,$contact,$images,$public_batch = false) {
$a = get_app();
if(! count($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),
'$created_at' => xmlify(datetime_convert('UTC','UTC',$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'],$public_batch)));
diaspora_transmit($owner,$contact,$slap,$public_batch);
}
}
function diaspora_send_followup($item,$owner,$contact,$public_batch = false) {
$a = get_app();
$myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
$theiraddr = $contact['addr'];
// The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always
// return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent.
// The only item with `parent` and `id` as the parent id is the parent item.
$p = q("select guid from item where parent = %d and id = %d limit 1",
intval($item['parent']),
intval($item['parent'])
);
if(count($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');
$positive = 'true';
if(($item['deleted']))
logger('diaspora_send_followup: received deleted "like". Those should go to diaspora_send_retraction');
}
else {
$tpl = get_markup_template('diaspora_comment.tpl');
$like = false;
}
$text = html_entity_decode(bb2diaspora($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'],'sha256'));
$msg = replace_macros($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'],$public_batch)));
return(diaspora_transmit($owner,$contact,$slap,$public_batch));
}
function diaspora_send_relay($item,$owner,$contact,$public_batch = false) {
$a = get_app();
$myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
$theiraddr = $contact['addr'];
// The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always
// return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent.
// The only item with `parent` and `id` as the parent id is the parent item.
$p = q("select guid from item where parent = %d and id = %d limit 1",
intval($item['parent']),
intval($item['parent'])
);
if(count($p))
$parent_guid = $p[0]['guid'];
else
return;
$like = false;
$relay_retract = false;
$sql_sign_id = 'iid';
if( $item['deleted']) {
$tpl = get_markup_template('diaspora_relayable_retraction.tpl');
$relay_retract = true;
$sql_sign_id = 'retract_iid';
$target_type = ( ($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
}
elseif($item['verb'] === ACTIVITY_LIKE) {
$tpl = get_markup_template('diaspora_like_relay.tpl');
$like = true;
$target_type = 'Post';
// $positive = (($item['deleted']) ? 'false' : 'true');
$positive = 'true';
}
else {
$tpl = get_markup_template('diaspora_comment_relay.tpl');
}
$body = $item['body'];
$text = html_entity_decode(bb2diaspora($body));
// fetch the original signature if the relayable was created by a Diaspora
// or DFRN user. Relayables for other networks are not supported.
$r = q("select * from sign where " . $sql_sign_id . " = %d limit 1",
intval($item['id'])
);
if(count($r)) {
$orig_sign = $r[0];
$signed_text = $orig_sign['signed_text'];
$authorsig = $orig_sign['signature'];
$handle = $orig_sign['signer'];
}
else {
// Author signature information (for likes, comments, and retractions of likes or comments,
// whether from Diaspora or Friendica) must be placed in the `sign` table before this
// function is called
logger('diaspora_send_relay: original author signature not found, cannot send relayable');
return;
/*
$itemcontact = q("select * from contact where `id` = %d limit 1",
intval($item['contact-id'])
);
if(count($itemcontact)) {
if(! $itemcontact[0]['self']) {
$prefix = sprintf( t('[Relayed] Comment authored by %s from network %s'),
'['. $item['author-name'] . ']' . '(' . $item['author-link'] . ')',
network_to_name($itemcontact['network'])) . "\n";
// "$body" was assigned to "$text" above. It isn't used after that, so I don't think
// the following change will do anything
$body = $prefix . $body;
// I think this comment will fail upon reaching Diaspora, because "$signed_text" is not defined
}
}
else {
// I'm confused about this "else." Since it sets "$handle = $myaddr," it seems like it should be for the case
// where the top-level post owner commented on his own post, i.e. "$itemcontact[0]['self']" is true. But it's
// positioned to be for the case where "count($itemcontact)" is 0.
$handle = $myaddr;
if($like)
$signed_text = $item['guid'] . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $handle;
elseif($relay_retract)
$signed_text = $item['guid'] . ';' . $target_type;
else
$signed_text = $item['guid'] . ';' . $parent_guid . ';' . $text . ';' . $handle;
$authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
q("insert into sign (`" . $sql_sign_id . "`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
intval($item['id']),
dbesc($signed_text),
dbesc($authorsig),
dbesc($handle)
);
}
*/
}
// sign it with the top-level owner's signature
$parentauthorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
$msg = replace_macros($tpl,array(
'$guid' => xmlify($item['guid']),
'$parent_guid' => xmlify($parent_guid),
'$target_type' =>xmlify($target_type),
'$authorsig' => xmlify($authorsig),
'$parentsig' => xmlify($parentauthorsig),
'$body' => xmlify($text),
'$positive' => xmlify($positive),
'$handle' => xmlify($handle)
));
logger('diaspora_send_relay: base message: ' . $msg, LOGGER_DATA);
$slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
return(diaspora_transmit($owner,$contact,$slap,$public_batch));
}
function diaspora_send_retraction($item,$owner,$contact,$public_batch = false) {
$a = get_app();
$myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
// Check whether the retraction is for a top-level post or whether it's a relayable
if( $item['uri'] !== $item['parent-uri'] ) {
$tpl = get_markup_template('diaspora_relay_retraction.tpl');
$target_type = (($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
}
else {
$tpl = get_markup_template('diaspora_signed_retract.tpl');
$target_type = 'StatusMessage';
}
$signed_text = $item['guid'] . ';' . $target_type;
$msg = replace_macros($tpl, array(
'$guid' => xmlify($item['guid']),
'$type' => xmlify($target_type),
'$handle' => xmlify($myaddr),
'$signature' => xmlify(base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256')))
));
$slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
return(diaspora_transmit($owner,$contact,$slap,$public_batch));
}
function diaspora_send_mail($item,$owner,$contact) {
$a = get_app();
$myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
$r = q("select * from conv where id = %d and uid = %d limit 1",
intval($item['convid']),
intval($item['uid'])
);
if(! count($r)) {
logger('diaspora_send_mail: conversation not found.');
return;
}
$cnv = $r[0];
$conv = array(
'guid' => xmlify($cnv['guid']),
'subject' => xmlify($cnv['subject']),
'created_at' => xmlify(datetime_convert('UTC','UTC',$cnv['created'],'Y-m-d H:i:s \U\T\C')),
'diaspora_handle' => xmlify($cnv['creator']),
'participant_handles' => xmlify($cnv['recips'])
);
$body = bb2diaspora($item['body']);
$created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d H:i:s \U\T\C');
$signed_text = $item['guid'] . ';' . $cnv['guid'] . ';' . $body . ';'
. $created . ';' . $myaddr . ';' . $cnv['guid'];
$sig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
$msg = array(
'guid' => xmlify($item['guid']),
'parent_guid' => xmlify($cnv['guid']),
'parent_author_signature' => (($item['reply']) ? null : xmlify($sig)),
'author_signature' => xmlify($sig),
'text' => xmlify($body),
'created_at' => xmlify($created),
'diaspora_handle' => xmlify($myaddr),
'conversation_guid' => xmlify($cnv['guid'])
);
if($item['reply']) {
$tpl = get_markup_template('diaspora_message.tpl');
$xmsg = replace_macros($tpl, array('$msg' => $msg));
}
else {
$conv['messages'] = array($msg);
$tpl = get_markup_template('diaspora_conversation.tpl');
$xmsg = replace_macros($tpl, array('$conv' => $conv));
}
logger('diaspora_conversation: ' . print_r($xmsg,true), LOGGER_DATA);
$slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($xmsg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],false)));
return(diaspora_transmit($owner,$contact,$slap,false));
}
function diaspora_transmit($owner,$contact,$slap,$public_batch) {
$enabled = intval(get_config('system','diaspora_enabled'));
if(! $enabled) {
return 200;
}
$a = get_app();
$logid = random_string(4);
$dest_url = (($public_batch) ? $contact['batch'] : $contact['notify']);
if(! $dest_url) {
logger('diaspora_transmit: no url for contact: ' . $contact['id'] . ' batch mode =' . $public_batch);
return 0;
}
logger('diaspora_transmit: ' . $logid . ' ' . $dest_url);
if(was_recently_delayed($contact['id'])) {
$return_code = 0;
}
else {
if(! intval(get_config('system','diaspora_test'))) {
post_url($dest_url . '/', $slap);
$return_code = $a->get_curl_code();
}
else {
logger('diaspora_transmit: test_mode');
return 200;
}
}
logger('diaspora_transmit: ' . $logid . ' returns: ' . $return_code);
if((! $return_code) || (($return_code == 503) && (stristr($a->get_curl_headers(),'retry-after')))) {
logger('diaspora_transmit: queue message');
$r = q("SELECT id from queue where cid = %d and network = '%s' and content = '%s' and batch = %d limit 1",
intval($contact['id']),
dbesc(NETWORK_DIASPORA),
dbesc($slap),
intval($public_batch)
);
if(count($r)) {
logger('diaspora_transmit: add_to_queue ignored - identical item already in queue');
}
else {
// queue message for redelivery
add_to_queue($contact['id'],NETWORK_DIASPORA,$slap,$public_batch);
}
}
return(($return_code) ? $return_code : (-1));
}