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implement signed_retractions

pull/1/head
Friendika 10 years ago
parent
commit
f07c0b2cfb
  1. 2
      boot.php
  2. 57
      include/diaspora.php

2
boot.php

@ -9,7 +9,7 @@ require_once('include/nav.php');
require_once('include/cache.php');
define ( 'FRIENDIKA_PLATFORM', 'Friendica');
define ( 'FRIENDIKA_VERSION', '2.3.1155' );
define ( 'FRIENDIKA_VERSION', '2.3.1156' );
define ( 'DFRN_PROTOCOL_VERSION', '2.22' );
define ( 'DB_UPDATE_VERSION', 1102 );

57
include/diaspora.php

@ -65,6 +65,9 @@ function diaspora_dispatch($importer,$msg) {
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);
}
@ -1264,6 +1267,51 @@ function diaspora_retraction($importer,$xml) {
// 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) {
$a = get_app();
@ -1659,11 +1707,14 @@ function diaspora_send_retraction($item,$owner,$contact,$public_batch = false) {
$a = get_app();
$myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
$tpl = get_markup_template('diaspora_retract.tpl');
$signed_text = $item['guid'] . ';' . 'StatusMessage';
$tpl = get_markup_template('diaspora_signed_retract.tpl');
$msg = replace_macros($tpl, array(
'$guid' => $item['guid'],
'$type' => 'Post',
'$handle' => $myaddr
'$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)));

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