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-rw-r--r--include/salmon.php196
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);
-}
-