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workflow for federated/non-dfrn followers

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This commit is contained in:
Mike Macgirvin 2010-10-24 20:39:24 -07:00
commit b41218ca30
16 changed files with 670 additions and 382 deletions
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114
include/salmon.php
View file

@ -33,61 +33,9 @@ function get_salmon_key($uri,$keyhash) {
if($debugging)
file_put_contents('salmon.out', "\n" . 'Fetch key' . "\n", FILE_APPEND);
if(strstr($uri,'@')) {
$arr = webfinger($uri);
if($debugging)
file_put_contents('salmon.out', "\n" . 'Fetch key from webfinger' . "\n", FILE_APPEND);
}
else {
$html = fetch_url($uri);
$a = get_app();
$h = $a->get_curl_headers();
if($debugging)
file_put_contents('salmon.out', "\n" . 'Fetch key via HTTP header: ' . $h . "\n", FILE_APPEND);
$arr = lrdd($uri);
$l = explode("\n",$h);
if(count($l)) {
foreach($l as $line) {
// TODO alter the following regex to support multiple relations (space separated)
if((stristr($line,'link:')) && preg_match('/<([^>].*)>.*rel\=[\'\"]lrdd[\'\"]/',$line,$matches)) {
$link = $matches[1];
if($debugging)
file_put_contents('salmon.out', "\n" . 'Fetch key via HTML Link: ' . $link . "\n", FILE_APPEND);
break;
}
}
}
if(! isset($link)) {
// parse the page of the supplied URL looking for rel links
require_once('library/HTML5/Parser.php');
$dom = HTML5_Parser::parse($html);
if(! $dom)
return '';
$items = $dom->getElementsByTagName('link');
foreach($items as $item) {
$x = $item->getAttribute('rel');
if($x == "lrdd") {
$link = $item->getAttribute('href');
if($debugging)
file_put_contents('salmon.out', "\n" . 'Fetch key via HTML body' . $link . "\n", FILE_APPEND);
break;
}
}
}
if(! isset($link))
return '';
$arr = fetch_xrd_links($link);
}
if($arr) {
if(is_array($arr)) {
foreach($arr as $a) {
if($a['@attributes']['rel'] === 'magic-public-key') {
$ret[] = $a['@attributes']['href'];
@ -140,4 +88,60 @@ function get_salmon_key($uri,$keyhash) {
function slapper($owner,$contact,$slap) {
// does contact have a salmon endpoint?
if(! strlen($contact['notify']))
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" >
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['spubkey'])));
// Setup RSA stuff to PKCS#1 sign the data
set_include_path(get_include_path() . PATH_SEPARATOR . 'phpsec');
require_once('phpsec/Crypt/RSA.php');
$rsa = new CRYPT_RSA();
$rsa->signatureMode = CRYPT_RSA_SIGNATURE_PKCS1;
$rsa->setHash('sha256');
$rsa->loadKey($owner['sprvkey']);
$signature = $rsa->sign($data);
$salmon_tpl = load_view_file('view/magicsig.tpl');
$salmon = replace_macros($salmon_tpl,array(
'$data' => $data,
'$encoding' => $encoding,
'$algorithm' => $algorithm,
'$keyhash' => $keyhash,
'$signature' => $signature
));
// slap them
post_url($contact['notify'],$salmon);
return;
}