diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/salmon.php | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/include/salmon.php b/include/salmon.php deleted file mode 100644 index 737d1f0d0..000000000 --- a/include/salmon.php +++ /dev/null @@ -1,196 +0,0 @@ -<?php - -require_once('include/crypto.php'); - -function get_salmon_key($uri,$keyhash) { - $ret = array(); - - logger('Fetching salmon key for ' . $uri, LOGGER_DEBUG, LOG_INFO); - - $x = webfinger_rfc7033($uri,true); - - logger('webfinger returns: ' . print_r($x,true), LOGGER_DATA, LOG_DEBUG); - - if($x && array_key_exists('links',$x) && $x['links']) { - foreach($x['links'] as $link) { - if(array_key_exists('rel',$link) && $link['rel'] === 'magic-public-key') { - $ret[] = $link['href']; - } - } - } - - else { - $arr = old_webfinger($uri); - - logger('old webfinger returns: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG); - - if(is_array($arr)) { - foreach($arr as $a) { - if($a['@attributes']['rel'] === 'magic-public-key') { - $ret[] = $a['@attributes']['href']; - } - } - } - else { - return ''; - } - } - - // We have found at least one key URL - // If it's inline, parse it - otherwise get the key - - if(count($ret)) { - for($x = 0; $x < count($ret); $x ++) { - if(substr($ret[$x],0,5) === 'data:') { - $ret[$x] = convert_salmon_key($ret[$x]); - } - } - } - - - logger('Key located: ' . print_r($ret,true), LOGGER_DEBUG, LOG_INFO); - - if(count($ret) == 1) { - - // We only found one one key so we don't care if the hash matches. - // If it's the wrong key we'll find out soon enough because - // message verification will fail. This also covers some older - // software which don't supply a keyhash. As long as they only - // have one key we'll be right. - - return $ret[0]; - } - else { - foreach($ret as $a) { - $hash = base64url_encode(hash('sha256',$a)); - if($hash == $keyhash) - return $a; - } - } - - return ''; -} - - - -function slapper($owner,$url,$slap) { - - // does contact have a salmon endpoint? - - if(! strlen($url)) - return; - - - if(! $owner['channel_prvkey']) { - logger(sprintf("channel '%s' (%d) does not have a salmon private key. Send failed.", - $owner['channel_address'],$owner['channel_id'])); - return; - } - - logger('slapper called for ' .$url . '. Data: ' . $slap, LOGGER_DATA, LOG_DEBUG); - - // create a magic envelope - - $data = base64url_encode($slap); - $data_type = 'application/atom+xml'; - $encoding = 'base64url'; - $algorithm = 'RSA-SHA256'; - $keyhash = base64url_encode(hash('sha256',salmon_key($owner['channel_pubkey'])),true); - - // precomputed base64url encoding of data_type, encoding, algorithm concatenated with periods - - $precomputed = '.YXBwbGljYXRpb24vYXRvbSt4bWw=.YmFzZTY0dXJs.UlNBLVNIQTI1Ng=='; - - $signature = base64url_encode(rsa_sign(str_replace('=','',$data . $precomputed),$owner['channel_prvkey'])); - - $signature2 = base64url_encode(rsa_sign($data . $precomputed,$owner['channel_prvkey'])); - - $signature3 = base64url_encode(rsa_sign($data,$owner['channel_prvkey'])); - - $salmon_tpl = get_markup_template('magicsig.tpl'); - - $salmon = replace_macros($salmon_tpl,array( - '$data' => $data, - '$encoding' => $encoding, - '$algorithm' => $algorithm, - '$keyhash' => $keyhash, - '$signature' => $signature - )); - - // slap them - - $redirects = 0; - - $ret = z_post_url($url,$salmon, $redirects, array('headers' => array( - 'Content-type: application/magic-envelope+xml', - 'Content-length: ' . strlen($salmon)) - )); - - - $return_code = $ret['return_code']; - - // check for success, e.g. 2xx - - if($return_code > 299) { - - logger('compliant salmon failed. Falling back to status.net hack2'); - - // Entirely likely that their salmon implementation is - // non-compliant. Let's try once more, this time only signing - // the data, without stripping '=' chars - - $salmon = replace_macros($salmon_tpl,array( - '$data' => $data, - '$encoding' => $encoding, - '$algorithm' => $algorithm, - '$keyhash' => $keyhash, - '$signature' => $signature2 - )); - - $redirects = 0; - - $ret = z_post_url($url,$salmon, $redirects, array('headers' => array( - 'Content-type: application/magic-envelope+xml', - 'Content-length: ' . strlen($salmon)) - )); - - - $return_code = $ret['return_code']; - - if($return_code > 299) { - - logger('compliant salmon failed. Falling back to status.net hack3'); - - // Entirely likely that their salmon implementation is - // non-compliant. Let's try once more, this time only signing - // the data, without the precomputed blob - - $salmon = replace_macros($salmon_tpl,array( - '$data' => $data, - '$encoding' => $encoding, - '$algorithm' => $algorithm, - '$keyhash' => $keyhash, - '$signature' => $signature3 - )); - - $redirects = 0; - - $ret = z_post_url($url,$salmon, $redirects, array('headers' => array( - 'Content-type: application/magic-envelope+xml', - 'Content-length: ' . strlen($salmon)) - )); - - - $return_code = $ret['return_code']; - } - } - logger('slapper for ' . $url . ' returned ' . $return_code); - - if(! $return_code) - return(-1); - if(($return_code == 503) && (stristr($ret['header'],'retry-after'))) - return(-1); - - return ((($return_code >= 200) && ($return_code < 300)) ? 0 : 1); -} - |