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friendica/include/diaspora.php
Friendika f07c0b2cfb implement signed_retractions
2011-11-05 14:45:29 -07:00

1744 lines
49 KiB
PHP
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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) {
$r = q("SELECT `user`.* FROM `user` WHERE `user`.`uid` IN ( SELECT `contact`.`uid` FROM `contact` WHERE `contact`.`network` = '%s' AND `contact`.`addr` = '%s' ) AND `account_expired` = 0 ",
dbesc(NETWORK_DIASPORA),
dbesc($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;
// 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 = $parsed_xml->post;
if($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,$xmlbase->retraction,$msg);
}
elseif($xmlbase->photo) {
$ret = diaspora_photo($importer,$xmlbase->photo,$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);
$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) {
$sender_handle = unxmlify($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;
}
$batch = (($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);
$hash = random_string() . (string) time(); // Generate a confirm_key
if($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) {
$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(! $contact)
return;
if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
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;
$basetag = str_replace('_',' ',substr($tag,1));
$body = str_replace($tag,'#[url=' . $a->get_baseurl() . '/search?search=' . rawurlencode($basetag) . ']' . $basetag . '[/url]',$body);
if(strlen($str_tags))
$str_tags .= ',';
$str_tags .= '#[url=' . $a->get_baseurl() . '/search?search=' . rawurlencode($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'] = $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(! $contact)
return;
if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
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";
$body = scale_diaspora_images($body,false);
}
elseif($source_xml->post->asphoto->image_url) {
$body = '[img]' . notags(unxmlify($source_xml->post->asphoto->image_url)) . '[/img]' . "\n";
$body = scale_diaspora_images($body);
}
elseif($source_xml->post->status_message) {
$body = diaspora2bb($source_xml->post->status_message->raw_message);
$body = scale_diaspora_images($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;
$basetag = str_replace('_',' ',substr($tag,1));
$body = str_replace($tag,'#[url=' . $a->get_baseurl() . '/search?search=' . rawurlencode($basetag) . ']' . $basetag . '[/url]',$body);
if(strlen($str_tags))
$str_tags .= ',';
$str_tags .= '#[url=' . $a->get_baseurl() . '/search?search=' . rawurlencode($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(! $contact)
return;
if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
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";
$body = scale_diaspora_images($body,false);
}
elseif($xml->image_url) {
$body = '[img]' . notags(unxmlify($xml->image_url)) . '[/img]' . "\n";
$body = scale_diaspora_images($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)) : '');
$text = $xml->text;
$contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
if(! $contact) {
logger('diaspora_comment: cannot find contact: ' . $msg['author']);
return;
}
if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
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];
$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,'sha256')) {
logger('diaspora_comment: verification failed.');
return;
}
if($parent_author_signature) {
$owner_signed_data = $guid . ';' . $parent_guid . ';' . $text . ';' . $diaspora_handle;
$parent_author_signature = base64_decode($parent_author_signature);
$key = $msg['key'];
if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha256')) {
logger('diaspora_comment: owner verification failed.');
return;
}
}
// Phew! Everything checks out. Now create an item.
$body = diaspora2bb($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;
$basetag = str_replace('_',' ',substr($tag,1));
$body = str_replace($tag,'#[url=' . $a->get_baseurl() . '/search?search=' . rawurlencode($basetag) . ']' . $basetag . '[/url]',$body);
if(strlen($str_tags))
$str_tags .= ',';
$str_tags .= '#[url=' . $a->get_baseurl() . '/search?search=' . rawurlencode($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);
}
return;
}
function diaspora_photo($importer,$xml,$msg) {
$a = get_app();
$remote_photo_path = notags(unxmlify($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.');
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";
$link_text = scale_diaspora_images($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: ' . $msg['author']);
return;
}
if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
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: ' . $guid);
return;
}
if($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,'sha256')) {
logger('diaspora_like: verification failed.');
return;
}
if($parent_author_signature) {
$owner_signed_data = $guid . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $diaspora_handle;
$parent_author_signature = base64_decode($parent_author_signature);
$key = $msg['key'];
if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha256')) {
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'] = $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') {
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'])
);
}
}
}
return 202;
// NOTREACHED
}
function diaspora_signed_retraction($importer,$xml) {
$guid = notags(unxmlify($xml->target_guid));
$diaspora_handle = notags(unxmlify($xml->sender_handle));
$type = notags(unxmlify($xml->target_type));
$sig = notags(unxmlify($xml->target_author_signature));
$contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
if(! $contact)
return;
// this may not yet work for comments. Need to see how the relaying works
// and figure out who signs it.
$signed_data = $guid . ';' . $type ;
$sig = base64_decode($sig);
$key = $msg['key'];
if(! rsa_verify($signed_data,$sig,$key,'sha256')) {
logger('diaspora_signed_retraction: owner verification failed.' . print_r($msg,true));
return;
}
if($type === 'StatusMessage') {
$r = q("select * from item where guid = '%s' and uid = %d limit 1",
dbesc('guid'),
intval($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'])
);
}
}
}
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');
$r = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s', `avatar-date` = '%s' , `bd` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
dbesc($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();
$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);
}
}
*/
$body = xmlify(html_entity_decode(bb2diaspora($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'];
$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;
}
$text = html_entity_decode(bb2diaspora($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'];
$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_relay.tpl');
$like = true;
$target_type = 'Post';
$positive = (($item['deleted']) ? 'false' : 'true');
}
else {
$tpl = get_markup_template('diaspora_comment_relay.tpl');
$like = false;
}
$body = $item['body'];
$text = html_entity_decode(bb2diaspora($body));
// fetch the original signature if somebody sent the post to us to relay
// If we are relaying for a reply originating on our own account, there wasn't a 'send to relay'
// action. It wasn't needed. In that case create the original signature and the
// owner (parent author) signature
// comments from other networks will be relayed under our name, with a brief
// preamble to describe what's happening and noting the real author
$r = q("select * from sign where iid = %d limit 1",
intval($item['id'])
);
if(count($r)) {
$orig_sign = $r[0];
$signed_text = $orig_sign['signed_text'];
$authorsig = $orig_sign['signature'];
$handle = $orig_sign['signer'];
}
else {
$itemcontact = q("select * from contact where `id` = %d limit 1",
intval($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 = $prefix . $body;
}
}
else {
if($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,$owner['uprvkey'],'sha256'));
q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
intval($item['id']),
dbesc($signed_text),
dbesc(base64_encode($authorsig)),
dbesc($myaddr)
);
$handle = $myaddr;
}
}
// sign it
$parentauthorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
$msg = replace_macros($tpl,array(
'$guid' => xmlify($item['guid']),
'$parent_guid' => xmlify($parent_guid),
'$target_type' =>xmlify($target_type),
'$authorsig' => xmlify($orig_sign['signature']),
'$parentsig' => xmlify($parentauthorsig),
'$body' => xmlify($text),
'$positive' => xmlify($positive),
'$handle' => xmlify($handle)
));
logger('diaspora_relay_comment: 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);
$signed_text = $item['guid'] . ';' . 'StatusMessage';
$tpl = get_markup_template('diaspora_signed_retract.tpl');
$msg = replace_macros($tpl, array(
'$guid' => $item['guid'],
'$type' => 'StatusMessage',
'$handle' => $myaddr,
'$signature' => 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,$public_batch));
}
function diaspora_transmit($owner,$contact,$slap,$public_batch) {
$a = get_app();
$logid = random_string(4);
logger('diaspora_transmit: ' . $logid . ' ' . (($public_batch) ? $contact['batch'] : $contact['notify']));
post_url((($public_batch) ? $contact['batch'] : $contact['notify']) . '/',$slap);
$return_code = $a->get_curl_code();
logger('diaspora_transmit: ' . $logid . ' returns: ' . $return_code);
if((! $return_code) || (($curl_stat == 503) && (stristr($a->get_curl_headers(),'retry-after')))) {
logger('diaspora_transmit: queue message');
// queue message for redelivery
add_to_queue($contact['id'],NETWORK_DIASPORA,$slap,$public_batch);
}
return(($return_code) ? $return_code : (-1));
}
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