X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=include%2Fdiaspora.php;h=6d070ecba4f2f0a9b6ae3cb717a10e9886b200e1;hb=1248a561e13ebd0a612b7e6b0630c1aa89f0556e;hp=d25137bf3f2778a72889e427dca28b07668d6163;hpb=49be3941828668e762141972afa1324045805f20;p=friendica.git
diff --git a/include/diaspora.php b/include/diaspora.php
index d25137bf3f..6d070ecba4 100644
--- a/include/diaspora.php
+++ b/include/diaspora.php
@@ -1,66 +1,100 @@
= 400)
- $err = 'Error';
- if($val >= 200 && $val < 300)
- $err = 'OK';
+ $parsed_xml = parse_xml_string($msg['message'],false);
- logger('mod-diaspora returns ' . $val);
- header($_SERVER["SERVER_PROTOCOL"] . ' ' . $val . ' ' . $err);
- killme();
+ $xmlbase = $parsed_xml->post;
+ if($xmlbase->request) {
+ diaspora_request($importer,$xmlbase->request);
+ }
+ elseif($xmlbase->status_message) {
+ diaspora_post($importer,$xmlbase->status_message);
+ }
+ elseif($xmlbase->comment) {
+ diaspora_comment($importer,$xmlbase->comment,$msg);
+ }
+ elseif($xmlbase->like) {
+ diaspora_like($importer,$xmlbase->like,$msg);
+ }
+ elseif($xmlbase->retraction) {
+ diaspora_retraction($importer,$xmlbase->retraction,$msg);
+ }
+ elseif($xmlbase->photo) {
+ diaspora_photo($importer,$xmlbase->photo,$msg);
+ }
+ else {
+ logger('diaspora_dispatch: unknown message type: ' . print_r($xmlbase,true));
+ }
+ return;
}
+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 $r[0];
+ return false;
+}
-function get_diaspora_key($uri) {
- $key = '';
-
- logger('Fetching diaspora key for: ' . $uri);
-
- $arr = lrdd($uri);
-
- if(is_array($arr)) {
- foreach($arr as $a) {
- if($a['@attributes']['rel'] === 'diaspora-public-key') {
- $key = base64_decode($a['@attributes']['href']);
- }
+function find_diaspora_person_by_handle($handle) {
+ $r = q("select * from fcontact where network = '%s' and addr = '%s' limit 1",
+ dbesc(NETWORK_DIASPORA),
+ dbesc($handle)
+ );
+ if(count($r)) {
+ // update record occasionally so it doesn't get stale
+ $d = strtotime($r[0]['updated'] . ' +00:00');
+ if($d < strtotime('now - 14 days')) {
+ q("delete from fcontact where id = %d limit 1",
+ intval($r[0]['id'])
+ );
}
+ else
+ return $r[0];
}
- else {
- return '';
+ require_once('include/Scrape.php');
+ $r = probe_url($handle, PROBE_DIASPORA);
+ if((count($r)) && ($r['network'] === NETWORK_DIASPORA)) {
+ add_fcontact($r);
+ return ($r);
}
-
- if($key)
- return rsatopem($key);
- return '';
+ return false;
}
-function diaspora_base_message($type,$data) {
-
- $tpl = get_markup_template('diaspora_' . $type . '.tpl');
- if(! $tpl)
- return '';
- return replace_macros($tpl,$data);
+function get_diaspora_key($uri) {
+ logger('Fetching diaspora key for: ' . $uri);
+ $r = find_diaspora_person_by_handle($uri);
+ if($r)
+ return $r['pubkey'];
+ return '';
}
function diaspora_msg_build($msg,$user,$contact,$prvkey,$pubkey) {
$a = get_app();
+ logger('diaspora_msg_build: ' . $msg, LOGGER_DATA);
+
$inner_aes_key = random_string(32);
$b_inner_aes_key = base64_encode($inner_aes_key);
- $inner_iv = random_string(32);
+ $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(32);
+ $outer_iv = random_string(16);
$b_outer_iv = base64_encode($outer_iv);
$handle = 'acct:' . $user['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
@@ -83,9 +117,7 @@ function diaspora_msg_build($msg,$user,$contact,$prvkey,$pubkey) {
$signable_data = $data . '.' . base64url_encode($type) . "\n" . '.'
. base64url_encode($encoding) . "\n" . '.' . base64url_encode($alg) . "\n";
- $signature = '';
- $result = openssl_sign($signable_data,$signature,$prvkey,'SHA256');
-
+ $signature = rsa_sign($signable_data,$prvkey);
$sig = base64url_encode($signature);
$decrypted_header = <<< EOT
@@ -93,7 +125,7 @@ $decrypted_header = <<< EOT
$b_inner_iv
$b_inner_aes_key
- {$contact['name']}
+ {$user['username']}
$handle
@@ -104,13 +136,19 @@ EOT;
$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)));
- $encrypted_header = '' . base64_encode($encrypted_header_json_object) . '';
+ $cipher_json = base64_encode($encrypted_header_json_object);
+
+ $encrypted_header = '' . $cipher_json . '';
$magic_env = <<< EOT
@@ -125,10 +163,25 @@ $magic_env = <<< EOT
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,$xml) {
@@ -136,6 +189,8 @@ function diaspora_decode($importer,$xml) {
$atom = $basedom->children(NAMESPACE_ATOM1);
+ // Diaspora devs: This is kind of sucky - 'encrypted_header' does not belong in the atom namespace
+
$encrypted_header = json_decode(base64_decode($atom->encrypted_header));
$encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
@@ -151,6 +206,7 @@ function diaspora_decode($importer,$xml) {
$decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $outer_key, $ciphertext, MCRYPT_MODE_CBC, $outer_iv);
+
$decrypted = pkcs5_unpad($decrypted);
/**
@@ -166,6 +222,7 @@ function diaspora_decode($importer,$xml) {
*
*/
+ logger('decrypted: ' . $decrypted, LOGGER_DEBUG);
$idom = parse_xml_string($decrypted,false);
$inner_iv = base64_decode($idom->iv);
@@ -186,7 +243,7 @@ function diaspora_decode($importer,$xml) {
if(! $base) {
logger('mod-diaspora: unable to locate salmon data in xml ');
- dt_return(400);
+ http_status_exit(400);
}
@@ -197,7 +254,14 @@ function diaspora_decode($importer,$xml) {
// strip whitespace so our data element will return to one big base64 blob
$data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data);
+
// Add back the 60 char linefeeds
+
+ // This completely violates the entire principle of salmon magic signatures,
+ // which was to have a message signing format that was completely ambivalent to linefeeds
+ // and transport whitespace mangling, and base64 wrapping rules. Guess what? PHP and Ruby
+ // use different linelengths for base64 output.
+
$lines = str_split($data,60);
$data = implode("\n",$lines);
@@ -209,6 +273,8 @@ function diaspora_decode($importer,$xml) {
$encoding = $base->encoding;
$alg = $base->alg;
+ // I can't even begin to tell you how sucky this is. Please read the spec.
+
$signed_data = $data . (($data[-1] != "\n") ? "\n" : '') . '.' . base64url_encode($type) . "\n" . '.' . base64url_encode($encoding) . "\n" . '.' . base64url_encode($alg) . "\n";
@@ -226,46 +292,920 @@ function diaspora_decode($importer,$xml) {
if(! $author_link) {
logger('mod-diaspora: Could not retrieve author URI.');
- receive_return(400);
+ http_status_exit(400);
}
// Once we have the author URI, go to the web and try to find their public key
- // *** or look it up locally ***
+ // (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 );
-
- // Get diaspora public key (pkcs#1) and convert to pkcs#8
$key = get_diaspora_key($author_link);
if(! $key) {
logger('mod-diaspora: Could not retrieve author key.');
- receive_return(400);
+ 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);
}
- $verify = false;
+ logger('mod-diaspora: Message verified.');
+
+ return array('message' => $inner_decrypted, 'author' => $author_link, 'key' => $key);
+
+}
- if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
- $verify = openssl_verify($signed_data,$signature,$key,'sha256');
+
+
+function diaspora_request($importer,$xml) {
+
+ $sender_handle = unxmlify($xml->sender_handle);
+ $recipient_handle = unxmlify($xml->recipient_handle);
+
+ if(! $sender_handle || ! $recipient_handle)
+ return;
+
+ $contact = diaspora_get_contact_by_handle($importer['uid'],$sender_handle);
+
+
+ if($contact) {
+
+ // perhaps we were already sharing with this person. Now they're sharing with us.
+ // That makes us friends.
+
+ if($contact['rel'] == CONTACT_IS_FOLLOWER) {
+ q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d LIMIT 1",
+ intval(CONTACT_IS_FRIEND),
+ intval($contact['id']),
+ intval($importer['uid'])
+ );
+ }
+ // send notification?
+ return;
+ }
+
+ $ret = find_diaspora_person_by_handle($sender_handle);
+
+
+ if((! count($ret)) || ($ret['network'] != NETWORK_DIASPORA)) {
+ logger('diaspora_request: Cannot resolve diaspora handle ' . $sender_handle . ' for ' . $recipient_handle);
+ return;
+ }
+
+ $r = q("INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
+ VALUES ( %d, '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s',%d,%d) ",
+ intval($importer['uid']),
+ dbesc($ret['network']),
+ dbesc($ret['addr']),
+ datetime_convert(),
+ dbesc($ret['url']),
+ dbesc($ret['name']),
+ dbesc($ret['nick']),
+ dbesc($ret['photo']),
+ dbesc($ret['pubkey']),
+ dbesc($ret['notify']),
+ dbesc($ret['poll']),
+ 1,
+ 2
+ );
+
+ // find the contact record we just created
+
+ $contact_record = diaspora_get_contact_by_handle($importer['uid'],$sender_handle);
+
+ $hash = random_string() . (string) time(); // Generate a confirm_key
+
+ if($contact_record) {
+ $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime` )
+ VALUES ( %d, %d, %d, %d, '%s', '%s', '%s' )",
+ intval($importer['uid']),
+ intval($contact_record['id']),
+ 0,
+ 0,
+ dbesc( t('Sharing notification from Diaspora network')),
+ dbesc($hash),
+ dbesc(datetime_convert())
+ );
+ }
+
+ return;
+}
+
+function diaspora_post($importer,$xml) {
+
+ $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.');
+ http_status_exit(202);
+ // NOTREACHED
+ }
+
+ $message_id = $diaspora_handle . ':' . $guid;
+ $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
+ intval($importer['uid']),
+ dbesc($message_id),
+ dbesc($guid)
+ );
+ if(count($r)) {
+ 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();
+ $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';
+
+ $message_id = item_store($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.');
+ http_status_exit(202);
+ // NOTREACHED
+ }
+
+ $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
+ intval($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 {
- // fallback sha256 verify for PHP < 5.3
- $rawsig = '';
- $hash = hash('sha256',$signed_data,true);
- openssl_public_decrypt($signature,$rawsig,$key);
- $verify = (($rawsig && substr($rawsig,-32) === $hash) ? true : false);
+ $person = find_diaspora_person_by_handle($diaspora_handle);
+
+ if(is_array($person) && x($person,'pubkey'))
+ $key = $person['pubkey'];
+ else {
+ logger('diaspora_comment: unable to find author details');
+ return;
+ }
}
- if(! $verify) {
- logger('mod-diaspora: Message did not verify. Discarding.');
- receive_return(400);
+ if(! rsa_verify($author_signed_data,$author_signature,$key,'sha')) {
+ logger('diaspora_comment: verification failed.');
+ return;
}
- logger('mod-diaspora: Message verified.');
- return $inner_decrypted;
+ if($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,'sha')) {
+ 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();
+ $datarray['uid'] = $importer['uid'];
+ $datarray['contact-id'] = $contact['id'];
+ $datarray['wall'] = $parent_item['wall'];
+ $datarray['gravity'] = GRAVITY_COMMENT;
+ $datarray['guid'] = $guid;
+ $datarray['uri'] = $message_id;
+ $datarray['parent-uri'] = $parent_item['uri'];
+
+ // No timestamps for comments? OK, we'll the use current time.
+ $datarray['created'] = $datarray['edited'] = datetime_convert();
+ $datarray['private'] = $parent_item['private'];
+
+ $datarray['owner-name'] = $contact['name'];
+ $datarray['owner-link'] = $contact['url'];
+ $datarray['owner-avatar'] = $contact['thumb'];
+
+ $datarray['author-name'] = $person['name'];
+ $datarray['author-link'] = $person['url'];
+ $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
+ $datarray['body'] = $body;
+ $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(! $parent_author_signature) {
+ q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
+ intval($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.');
+ http_status_exit(202);
+ // NOTREACHED
+ }
+
+ $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
+ intval($importer['uid']),
+ dbesc($status_message_guid)
+ );
+ if(! count($r)) {
+ logger('diaspora_photo: parent item not found: parent: ' . $parent_guid . ' item: ' . $guid);
+ return;
+ }
+ $parent_item = $r[0];
+
+ $link_text = '[img]' . $remote_photo_path . $remote_photo_name . '[/img]' . "\n";
+
+ $r = q("update item set `body` = '%s' where `id` = %d and `uid` = %d limit 1",
+ dbesc($link_text . $parent_item['body']),
+ intval($parent_item['id']),
+ intval($parent_item['uid'])
+ );
+
+ return;
+}
+
+
+
+
+function diaspora_like($importer,$xml,$msg) {
+
+ $a = get_app();
+ $guid = notags(unxmlify($xml->guid));
+ $parent_guid = notags(unxmlify($xml->parent_guid));
+ $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
+ $target_type = notags(unxmlify($xml->target_type));
+ $positive = notags(unxmlify($xml->positive));
+ $author_signature = notags(unxmlify($xml->author_signature));
+
+ $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
+
+ // likes on comments not supported here and likes on photos not supported by Diaspora
+
+ if($target_type !== 'Post')
+ return;
+
+ $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
+ if(! $contact) {
+ 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.');
+ http_status_exit(202);
+ // NOTREACHED
+ }
+
+ $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
+ intval($importer['uid']),
+ dbesc($parent_guid)
+ );
+ if(! count($r)) {
+ logger('diaspora_like: parent item not found: ' . $guid);
+ return;
+ }
+
+ $parent_item = $r[0];
+
+ $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
+ intval($importer['uid']),
+ dbesc($guid)
+ );
+ if(count($r)) {
+ if($positive === 'true') {
+ logger('diaspora_like: duplicate like: ' . $guid);
+ return;
+ }
+ if($positive === 'false') {
+ q("UPDATE `item` SET `deleted` = 1 WHERE `id` = %d AND `uid` = %d LIMIT 1",
+ intval($r[0]['id']),
+ intval($importer['uid'])
+ );
+ // FIXME
+ // send notification via proc_run()
+ return;
+ }
+ }
+ if($positive === 'false') {
+ logger('diaspora_like: unlike received with no corresponding like');
+ return;
+ }
+
+ $author_signed_data = $guid . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $diaspora_handle;
+
+ $author_signature = base64_decode($author_signature);
+
+ if(strcasecmp($diaspora_handle,$msg['author']) == 0) {
+ $person = $contact;
+ $key = $msg['key'];
+ }
+ else {
+ $person = find_diaspora_person_by_handle($diaspora_handle);
+ if(is_array($person) && x($person,'pubkey'))
+ $key = $person['pubkey'];
+ else {
+ logger('diaspora_like: unable to find author details');
+ return;
+ }
+ }
+
+ if(! rsa_verify($author_signed_data,$author_signature,$key,'sha')) {
+ logger('diaspora_like: verification failed.');
+ return;
+ }
+
+ if($parent_author_signature) {
+
+ $owner_signed_data = $guid . ';' . $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,'sha')) {
+ logger('diaspora_like: owner verification failed.');
+ return;
+ }
+ }
+
+ // Phew! Everything checks out. Now create an item.
+
+ $uri = $diaspora_handle . ':' . $guid;
+
+ $activity = ACTIVITY_LIKE;
+ $post_type = (($parent_item['resource-id']) ? t('photo') : t('status'));
+ $objtype = (($parent_item['resource-id']) ? ACTIVITY_OBJ_PHOTO : ACTIVITY_OBJ_NOTE );
+ $link = xmlify('' . "\n") ;
+ $body = $parent_item['body'];
+
+ $obj = <<< EOT
+
+
+EOT;
+ $bodyverb = t('%1$s likes %2$s\'s %3$s');
+
+ $arr = array();
+
+ $arr['uri'] = $uri;
+ $arr['uid'] = $importer['uid'];
+ $arr['guid'] = $guid;
+ $arr['contact-id'] = $contact['id'];
+ $arr['type'] = 'activity';
+ $arr['wall'] = $parent_item['wall'];
+ $arr['gravity'] = GRAVITY_LIKE;
+ $arr['parent'] = $parent_item['id'];
+ $arr['parent-uri'] = $parent_item['uri'];
+
+ $arr['owner-name'] = $contact['name'];
+ $arr['owner-link'] = $contact['url'];
+ $arr['owner-avatar'] = $contact['thumb'];
+
+ $arr['author-name'] = $person['name'];
+ $arr['author-link'] = $person['url'];
+ $arr['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
+
+ $ulink = '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
+ $alink = '[url=' . $parent_item['author-link'] . ']' . $parent_item['author-name'] . '[/url]';
+ $plink = '[url=' . $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $parent_item['id'] . ']' . $post_type . '[/url]';
+ $arr['body'] = sprintf( $bodyverb, $ulink, $alink, $plink );
+ $arr['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.
+
+ if(! $parent_author_signature)
+ proc_run('php','include/notifier.php','comment',$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'])
+ );
+ }
+ }
+ }
+
+ http_exit_status(202);
+ // NOTREACHED
+}
+
+function diaspora_share($me,$contact) {
+ $a = get_app();
+ $myaddr = $me['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
+ $theiraddr = $contact['addr'];
+
+ $tpl = get_markup_template('diaspora_share.tpl');
+ $msg = replace_macros($tpl, array(
+ '$sender' => $myaddr,
+ '$recipient' => $theiraddr
+ ));
+
+ $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])));
+
+ return(diaspora_transmit($owner,$contact,$slap));
+}
+
+function diaspora_unshare($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,$slap));
+
+}
+
+
+
+function diaspora_send_status($item,$owner,$contact) {
+
+ $a = get_app();
+ $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
+ $theiraddr = $contact['addr'];
+
+ $images = array();
+
+ $body = $item['body'];
+
+ $cnt = preg_match_all('|\[img\](.*?)\[\/img\]|',$body,$matches,PREG_SET_ORDER);
+ if($cnt) {
+ foreach($matches as $mtch) {
+ $detail = array();
+ $detail['str'] = $mtch[0];
+ $detail['path'] = dirname($mtch[1]) . '/';
+ $detail['file'] = basename($mtch[1]);
+ $detail['guid'] = $item['guid'];
+ $detail['handle'] = $myaddr;
+ $images[] = $detail;
+ $body = str_replace($detail['str'],t('link'),$body);
+ }
+ }
+ $body = xmlify(html_entity_decode(bb2diaspora($body)));
+
+ $public = (($item['private']) ? 'false' : 'true');
+
+ require_once('include/datetime.php');
+ $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d H:i:s \U\T\C');
+
+ $tpl = get_markup_template('diaspora_post.tpl');
+ $msg = replace_macros($tpl, array(
+ '$body' => $body,
+ '$guid' => $item['guid'],
+ '$handle' => xmlify($myaddr),
+ '$public' => $public,
+ '$created' => $created
+ ));
+
+ logger('diaspora_send_status: ' . $owner['username'] . ' -> ' . $contact['name'] . ' base message: ' . $msg, LOGGER_DATA);
+
+ $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
+
+ $return_code = diaspora_transmit($owner,$contact,$slap);
+
+ if(count($images)) {
+ diaspora_send_images($item,$owner,$contact,$images);
+ }
+
+ return $return_code;
+}
+
+
+function diaspora_send_images($item,$owner,$contact,$images) {
+ $a = get_app();
+ if(! count($images))
+ return;
+ $mysite = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://') + 3) . '/photo';
+
+ $tpl = get_markup_template('diaspora_photo.tpl');
+ foreach($images as $image) {
+ if(! stristr($image['path'],$mysite))
+ continue;
+ $resource = str_replace('.jpg','',$image['file']);
+ $resource = substr($resource,0,strpos($resource,'-'));
+
+ $r = q("select * from photo where `resource-id` = '%s' and `uid` = %d limit 1",
+ dbesc($resource),
+ intval($owner['uid'])
+ );
+ if(! count($r))
+ continue;
+ $public = (($r[0]['allow_cid'] || $r[0]['allow_gid'] || $r[0]['deny_cid'] || $r[0]['deny_gid']) ? 'false' : 'true' );
+ $msg = replace_macros($tpl,array(
+ '$path' => xmlify($image['path']),
+ '$filename' => xmlify($image['file']),
+ '$msg_guid' => xmlify($image['guid']),
+ '$guid' => xmlify($r[0]['guid']),
+ '$handle' => xmlify($image['handle']),
+ '$public' => xmlify($public),
+ '$created_at' => xmlify(datetime_convert('UTC','UTC',$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'])));
+
+ diaspora_transmit($owner,$contact,$slap);
+ }
+
+}
+
+function diaspora_send_followup($item,$owner,$contact) {
+
+ $a = get_app();
+ $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
+ $theiraddr = $contact['addr'];
+
+ $p = q("select guid from item where parent = %d limit 1",
+ $item['parent']
+ );
+ if(count($p))
+ $parent_guid = $p[0]['guid'];
+ else
+ return;
+
+ if($item['verb'] === ACTIVITY_LIKE) {
+ $tpl = get_markup_template('diaspora_like.tpl');
+ $like = true;
+ $target_type = 'Post';
+ $positive = (($item['deleted']) ? 'false' : 'true');
+ }
+ else {
+ $tpl = get_markup_template('diaspora_comment.tpl');
+ $like = false;
+ }
+
+ $text = html_entity_decode(bb2diaspora($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'],'sha'));
+
+ $msg = replace_macros($tpl,array(
+ '$guid' => xmlify($item['guid']),
+ '$parent_guid' => xmlify($parent_guid),
+ '$target_type' =>xmlify($target_type),
+ '$authorsig' => xmlify($authorsig),
+ '$body' => xmlify($text),
+ '$positive' => xmlify($positive),
+ '$handle' => xmlify($myaddr)
+ ));
+
+ logger('diaspora_followup: base message: ' . $msg, LOGGER_DATA);
+
+ $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
+
+ return(diaspora_transmit($owner,$contact,$slap));
+}
+
+
+function diaspora_send_relay($item,$owner,$contact) {
+
+
+ $a = get_app();
+ $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
+ $theiraddr = $contact['addr'];
+
+
+ $p = q("select guid from item where parent = %d limit 1",
+ $item['parent']
+ );
+ if(count($p))
+ $parent_guid = $p[0]['guid'];
+ else
+ return;
+
+ if($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,$owner['uprvkey'],'sha'));
+
+ q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
+ intval($item['id']),
+ dbesc($signed_text),
+ dbesc(base64_encode($authorsig)),
+ dbesc($myaddr)
+ );
+ $handle = $myaddr;
+ }
+ }
+
+ // sign it
+
+ $parentauthorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha'));
+
+ $msg = replace_macros($tpl,array(
+ '$guid' => xmlify($item['guid']),
+ '$parent_guid' => xmlify($parent_guid),
+ '$target_type' =>xmlify($target_type),
+ '$authorsig' => xmlify($orig_sign['signature']),
+ '$parentsig' => xmlify($parentauthorsig),
+ '$body' => xmlify($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'])));
+
+ return(diaspora_transmit($owner,$contact,$slap));
+
+}
+
+
+
+function diaspora_send_retraction($item,$owner,$contact) {
+
+ $a = get_app();
+ $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
+
+ $tpl = get_markup_template('diaspora_retract.tpl');
+ $msg = replace_macros($tpl, array(
+ '$guid' => $item['guid'],
+ '$type' => 'Post',
+ '$handle' => $myaddr
+ ));
+
+ $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
+
+ return(diaspora_transmit($owner,$contact,$slap));
+}
+
+
+
+function diaspora_transmit($owner,$contact,$slap) {
+
+ $a = get_app();
+
+ post_url($contact['notify'] . '/',$slap);
+ $return_code = $a->get_curl_code();
+ logger('diaspora_transmit: returns: ' . $return_code);
+
+ if(! $return_code) {
+ logger('diaspora_transmit: queue message');
+ // queue message for redelivery
+ q("INSERT INTO `queue` ( `cid`, `created`, `last`, `content`)
+ VALUES ( %d, '%s', '%s', '%s') ",
+ intval($contact['id']),
+ dbesc(datetime_convert()),
+ dbesc(datetime_convert()),
+ dbesc($slap)
+ );
+ }
+
+ return(($return_code) ? $return_code : (-1));
+}