diaspora protocol changes
This commit is contained in:
Friendika
parent
93c235a912
commit
5c0e135fe9
2 changed files with 123 additions and 81 deletions
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@ -5,34 +5,52 @@ require_once('include/items.php');
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require_once('include/bb2diaspora.php');
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require_once('include/contact_selectors.php');
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function diaspora_dispatch_public($msg) {
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$r = q("SELECT `user`.* FROM `user` WHERE `user`.`uid` IN ( SELECT `uid` FROM `contact` WHERE `network` = '%s' AND `addr` = '%s' ) ",
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dbesc(NETWORK_DIASPORA),
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dbesc($msg['author'])
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);
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if(count($r)) {
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foreach($r as $rr) {
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diaspora_dispatch($rr,$msg);
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}
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}
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}
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function diaspora_dispatch($importer,$msg) {
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$ret = 0;
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$parsed_xml = parse_xml_string($msg['message'],false);
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$xmlbase = $parsed_xml->post;
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if($xmlbase->request) {
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diaspora_request($importer,$xmlbase->request);
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$ret = diaspora_request($importer,$xmlbase->request);
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}
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elseif($xmlbase->status_message) {
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diaspora_post($importer,$xmlbase->status_message);
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$ret = diaspora_post($importer,$xmlbase->status_message);
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}
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elseif($xmlbase->comment) {
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diaspora_comment($importer,$xmlbase->comment,$msg);
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$ret = diaspora_comment($importer,$xmlbase->comment,$msg);
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}
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elseif($xmlbase->like) {
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diaspora_like($importer,$xmlbase->like,$msg);
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$ret = diaspora_like($importer,$xmlbase->like,$msg);
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}
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elseif($xmlbase->retraction) {
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diaspora_retraction($importer,$xmlbase->retraction,$msg);
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$ret = diaspora_retraction($importer,$xmlbase->retraction,$msg);
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}
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elseif($xmlbase->photo) {
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diaspora_photo($importer,$xmlbase->photo,$msg);
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$ret = diaspora_photo($importer,$xmlbase->photo,$msg);
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}
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else {
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logger('diaspora_dispatch: unknown message type: ' . print_r($xmlbase,true));
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}
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return;
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return $ret;
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}
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function diaspora_get_contact_by_handle($uid,$handle) {
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@ -106,16 +124,14 @@ function diaspora_msg_build($msg,$user,$contact,$prvkey,$pubkey) {
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$b64url_data = base64url_encode($b64_data);
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$b64url_stripped = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data);
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$lines = str_split($b64url_stripped,60);
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$data = implode("\n",$lines);
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$data = $data . (($data[-1] != "\n") ? "\n" : '') ;
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$data = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data);
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$type = 'application/atom+xml';
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$encoding = 'base64url';
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$alg = 'RSA-SHA256';
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$signable_data = $data . '.' . base64url_encode($type) . "\n" . '.'
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. base64url_encode($encoding) . "\n" . '.' . base64url_encode($alg) . "\n";
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$signable_data = $data . '.' . base64url_encode($type) . '.'
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. base64url_encode($encoding) . '.' . base64url_encode($alg) ;
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$signature = rsa_sign($signable_data,$prvkey);
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$sig = base64url_encode($signature);
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@ -157,7 +173,7 @@ $magic_env = <<< EOT
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<me:env xmlns:me="http://salmon-protocol.org/ns/magic-env">
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<me:encoding>base64url</me:encoding>
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<me:alg>RSA-SHA256</me:alg>
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<me:data type="application/atom+xml">$data</me:data>
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<me:data type="application/xml">$data</me:data>
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<me:sig>$sig</me:sig>
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</me:env>
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</entry>
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@ -185,50 +201,67 @@ EOT;
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function diaspora_decode($importer,$xml) {
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$public = false;
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$basedom = parse_xml_string($xml);
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$atom = $basedom->children(NAMESPACE_ATOM1);
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$children = $basedom->children(NAMESPACE_DIASPORA_PROTOCOL);
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// Diaspora devs: This is kind of sucky - 'encrypted_header' does not belong in the atom namespace
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if($children->header) {
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$public = true;
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$author_link = str_replace('acct:','',$children->author_id);
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}
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else {
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$encrypted_header = json_decode(base64_decode($atom->encrypted_header));
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$encrypted_header = json_decode(base64_decode($children->encrypted_header));
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$encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
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$ciphertext = base64_decode($encrypted_header->ciphertext);
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$encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
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$ciphertext = base64_decode($encrypted_header->ciphertext);
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$outer_key_bundle = '';
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openssl_private_decrypt($encrypted_aes_key_bundle,$outer_key_bundle,$importer['prvkey']);
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$outer_key_bundle = '';
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openssl_private_decrypt($encrypted_aes_key_bundle,$outer_key_bundle,$importer['prvkey']);
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$j_outer_key_bundle = json_decode($outer_key_bundle);
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$j_outer_key_bundle = json_decode($outer_key_bundle);
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$outer_iv = base64_decode($j_outer_key_bundle->iv);
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$outer_key = base64_decode($j_outer_key_bundle->key);
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$outer_iv = base64_decode($j_outer_key_bundle->iv);
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$outer_key = base64_decode($j_outer_key_bundle->key);
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$decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $outer_key, $ciphertext, MCRYPT_MODE_CBC, $outer_iv);
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$decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $outer_key, $ciphertext, MCRYPT_MODE_CBC, $outer_iv);
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$decrypted = pkcs5_unpad($decrypted);
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$decrypted = pkcs5_unpad($decrypted);
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/**
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* $decrypted now contains something like
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*
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* <decrypted_header>
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* <iv>8e+G2+ET8l5BPuW0sVTnQw==</iv>
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* <aes_key>UvSMb4puPeB14STkcDWq+4QE302Edu15oaprAQSkLKU=</aes_key>
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* <author>
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* <name>Ryan Hughes</name>
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* <uri>acct:galaxor@diaspora.pirateship.org</uri>
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* </author>
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* </decrypted_header>
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*/
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/**
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* $decrypted now contains something like
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*
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* <decrypted_header>
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* <iv>8e+G2+ET8l5BPuW0sVTnQw==</iv>
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* <aes_key>UvSMb4puPeB14STkcDWq+4QE302Edu15oaprAQSkLKU=</aes_key>
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logger('decrypted: ' . $decrypted, LOGGER_DEBUG);
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$idom = parse_xml_string($decrypted,false);
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***** OBSOLETE
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$inner_iv = base64_decode($idom->iv);
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$inner_aes_key = base64_decode($idom->aes_key);
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* <author>
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* <name>Ryan Hughes</name>
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* <uri>acct:galaxor@diaspora.pirateship.org</uri>
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* </author>
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$author_link = str_replace('acct:','',$idom->author->uri);
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***** CURRENT
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* <author_id>acct:galaxor@diaspora.priateship.org</author_id>
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***** END DIFFS
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* </decrypted_header>
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*/
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logger('decrypted: ' . $decrypted, LOGGER_DEBUG);
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$idom = parse_xml_string($decrypted,false);
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$inner_iv = base64_decode($idom->iv);
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$inner_aes_key = base64_decode($idom->aes_key);
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$author_link = str_replace('acct:','',$idom->author_id);
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}
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$dom = $basedom->children(NAMESPACE_SALMON_ME);
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@ -262,8 +295,8 @@ function diaspora_decode($importer,$xml) {
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// and transport whitespace mangling, and base64 wrapping rules. Guess what? PHP and Ruby
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// use different linelengths for base64 output.
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$lines = str_split($data,60);
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$data = implode("\n",$lines);
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// $lines = str_split($data,60);
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// $data = implode("\n",$lines);
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// stash away some other stuff for later
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@ -273,22 +306,25 @@ function diaspora_decode($importer,$xml) {
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$encoding = $base->encoding;
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$alg = $base->alg;
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// I can't even begin to tell you how sucky this is. Please read the spec.
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$signed_data = $data . (($data[-1] != "\n") ? "\n" : '') . '.' . base64url_encode($type) . "\n" . '.' . base64url_encode($encoding) . "\n" . '.' . base64url_encode($alg) . "\n";
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$signed_data = $data . '.' . base64url_encode($type) . '.' . base64url_encode($encoding) . '.' . base64url_encode($alg);
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// decode the data
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$data = base64url_decode($data);
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// Now pull out the inner encrypted blob
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$inner_encrypted = base64_decode($data);
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if($public) {
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$inner_decrypted = $data;
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}
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else {
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$inner_decrypted =
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$inner_decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $inner_encrypted, MCRYPT_MODE_CBC, $inner_iv);
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// Decode the encrypted blob
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$inner_decrypted = pkcs5_unpad($inner_decrypted);
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$inner_encrypted = base64_decode($data);
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$inner_decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $inner_encrypted, MCRYPT_MODE_CBC, $inner_iv);
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$inner_decrypted = pkcs5_unpad($inner_decrypted);
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}
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if(! $author_link) {
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logger('mod-diaspora: Could not retrieve author URI.');
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@ -321,7 +357,6 @@ function diaspora_decode($importer,$xml) {
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}
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function diaspora_request($importer,$xml) {
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$sender_handle = unxmlify($xml->sender_handle);
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@ -332,7 +367,6 @@ function diaspora_request($importer,$xml) {
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$contact = diaspora_get_contact_by_handle($importer['uid'],$sender_handle);
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if($contact) {
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// perhaps we were already sharing with this person. Now they're sharing with us.
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@ -408,8 +442,7 @@ function diaspora_post($importer,$xml) {
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if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
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logger('diaspora_post: Ignoring this author.');
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http_status_exit(202);
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// NOTREACHED
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return 202;
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}
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$message_id = $diaspora_handle . ':' . $guid;
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@ -493,8 +526,7 @@ function diaspora_comment($importer,$xml,$msg) {
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if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
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logger('diaspora_comment: Ignoring this author.');
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http_status_exit(202);
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// NOTREACHED
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return 202;
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}
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$r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
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@ -535,7 +567,7 @@ function diaspora_comment($importer,$xml,$msg) {
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}
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}
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if(! rsa_verify($author_signed_data,$author_signature,$key,'sha')) {
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if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
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logger('diaspora_comment: verification failed.');
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return;
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}
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@ -548,7 +580,7 @@ function diaspora_comment($importer,$xml,$msg) {
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$key = $msg['key'];
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if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha')) {
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if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha256')) {
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logger('diaspora_comment: owner verification failed.');
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return;
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}
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@ -633,8 +665,7 @@ function diaspora_photo($importer,$xml,$msg) {
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if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
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logger('diaspora_photo: Ignoring this author.');
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http_status_exit(202);
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// NOTREACHED
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return 202;
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}
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$r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
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@ -686,8 +717,7 @@ function diaspora_like($importer,$xml,$msg) {
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if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
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logger('diaspora_like: Ignoring this author.');
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http_status_exit(202);
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// NOTREACHED
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return 202;
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}
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$r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
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@ -743,7 +773,7 @@ function diaspora_like($importer,$xml,$msg) {
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}
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}
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if(! rsa_verify($author_signed_data,$author_signature,$key,'sha')) {
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if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
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logger('diaspora_like: verification failed.');
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return;
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}
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@ -756,7 +786,7 @@ function diaspora_like($importer,$xml,$msg) {
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$key = $msg['key'];
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if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha')) {
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if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha256')) {
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logger('diaspora_like: owner verification failed.');
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return;
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}
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@ -877,7 +907,7 @@ function diaspora_retraction($importer,$xml) {
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}
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}
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http_exit_status(202);
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return 202;
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// NOTREACHED
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}
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@ -1044,7 +1074,7 @@ function diaspora_send_followup($item,$owner,$contact) {
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else
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$signed_text = $item['guid'] . ';' . $parent_guid . ';' . $text . ';' . $myaddr;
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$authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha'));
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$authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
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$msg = replace_macros($tpl,array(
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'$guid' => xmlify($item['guid']),
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@ -1131,7 +1161,7 @@ function diaspora_send_relay($item,$owner,$contact) {
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else
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$signed_text = $item['guid'] . ';' . $parent_guid . ';' . $text . ';' . $myaddr;
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$authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha'));
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$authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
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q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
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intval($item['id']),
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@ -1145,7 +1175,7 @@ function diaspora_send_relay($item,$owner,$contact) {
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// sign it
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$parentauthorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha'));
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$parentauthorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
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$msg = replace_macros($tpl,array(
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'$guid' => xmlify($item['guid']),
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@ -12,18 +12,26 @@ require_once('include/diaspora.php');
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function receive_post(&$a) {
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if($a->argc != 3 || $a->argv[1] !== 'users')
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http_status_exit(500);
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$public = false;
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$guid = $a->argv[2];
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if(($a->argc == 2) && ($a->argv[1] === 'public')) {
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$public = true;
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}
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else {
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$r = q("SELECT * FROM `user` WHERE `guid` = '%s' LIMIT 1",
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dbesc($guid)
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);
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if(! count($r))
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http_status_exit(500);
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if($a->argc != 3 || $a->argv[1] !== 'users')
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http_status_exit(500);
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$importer = $r[0];
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$guid = $a->argv[2];
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$r = q("SELECT * FROM `user` WHERE `guid` = '%s' LIMIT 1",
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dbesc($guid)
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);
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if(! count($r))
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http_status_exit(500);
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$importer = $r[0];
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}
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// It is an application/x-www-form-urlencoded
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@ -41,9 +49,13 @@ function receive_post(&$a) {
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if(! is_array($msg))
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http_status_exit(500);
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diaspora_dispatch($importer,$msg);
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$ret = 0;
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if($public)
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diaspora_dispatch_public($msg);
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else
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$ret = diaspora_dispatch($importer,$msg);
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http_status_exit(200);
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http_status_exit(($ret) ? $ret : 200);
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// NOTREACHED
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}
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