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-rw-r--r--include/salmon.php195
1 files changed, 0 insertions, 195 deletions
diff --git a/include/salmon.php b/include/salmon.php
deleted file mode 100644
index ae885dcab..000000000
--- a/include/salmon.php
+++ /dev/null
@@ -1,195 +0,0 @@
-<?php
-
-require_once('include/crypto.php');
-
-
-
-function get_salmon_key($uri,$keyhash) {
- $ret = array();
-
- logger('Fetching salmon key');
-
- $arr = lrdd($uri);
-
- 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[$x],0,5) === 'data:') {
- if(strstr($ret[$x],','))
- $ret[$x] = substr($ret[$x],strpos($ret[$x],',')+1);
- else
- $ret[$x] = substr($ret[$x],5);
- }
- else
- $ret[$x] = fetch_url($ret[$x]);
- }
- }
-
-
- logger('Key located: ' . print_r($ret,true));
-
- if(count($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) {
-
- logger('slapper called. Data: ' . $slap);
-
- // does contact have a salmon endpoint?
-
- if(! strlen($url))
- return;
-
-
- if(! $owner['prvkey']) {
- logger(sprintf("slapper: user '%s' (%d) does not have a salmon private key. Send failed.",
- $owner['username'],$owner['uid']));
- return;
- }
-
- // add all namespaces to item
-
-$namespaces = <<< EOT
-<entry xmlns="http://www.w3.org/2005/Atom"
- xmlns:thr="http://purl.org/syndication/thread/1.0"
- xmlns:at="http://purl.org/atompub/tombstones/1.0"
- xmlns:media="http://purl.org/syndication/atommedia"
- xmlns:dfrn="http://purl.org/macgirvin/dfrn/1.0"
- xmlns:as="http://activitystrea.ms/spec/1.0/"
- xmlns:georss="http://www.georss.org/georss"
- xmlns:poco="http://portablecontacts.net/spec/1.0"
- xmlns:ostatus="http://ostatus.org/schema/1.0"
- xmlns:statusnet="http://status.net/schema/api/1/" > >
-EOT;
-
- $slap = str_replace('<entry>',$namespaces,$slap);
-
- // 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['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['prvkey']));
-
- $signature2 = base64url_encode(rsa_sign($data . $precomputed,$owner['prvkey']));
-
- $signature3 = base64url_encode(rsa_sign($data,$owner['prvkey']));
-
- $salmon_tpl = get_markup_template('magicsig.tpl');
-
- $salmon = replace_macros($salmon_tpl,array(
- '$data' => $data,
- '$encoding' => $encoding,
- '$algorithm' => $algorithm,
- '$keyhash' => $keyhash,
- '$signature' => $signature
- ));
-
- // slap them
- post_url($url,$salmon, array(
- 'Content-type: application/magic-envelope+xml',
- 'Content-length: ' . strlen($salmon)
- ));
-
- $a = get_app();
- $return_code = $a->get_curl_code();
-
- // check for success, e.g. 2xx
-
- if($return_code > 299) {
-
- logger('slapper: 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' => $signature2
- ));
-
- // slap them
- post_url($url,$salmon, array(
- 'Content-type: application/magic-envelope+xml',
- 'Content-length: ' . strlen($salmon)
- ));
- $return_code = $a->get_curl_code();
-
-
- if($return_code > 299) {
-
- logger('slapper: 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' => $signature3
- ));
-
- // slap them
- post_url($url,$salmon, array(
- 'Content-type: application/magic-envelope+xml',
- 'Content-length: ' . strlen($salmon)
- ));
- $return_code = $a->get_curl_code();
- }
- }
- logger('slapper returned ' . $return_code);
- if(! $return_code)
- return(-1);
- if(($return_code == 503) && (stristr($a->get_curl_headers(),'retry-after')))
- return(-1);
-
- return ((($return_code >= 200) && ($return_code < 300)) ? 0 : 1);
-}
-