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Last objectification of MagicEnvelope. Smarter SalmonAction

This commit is contained in:
Mikael Nordfeldth 2014-05-31 11:29:55 +02:00
parent 120e5c685a
commit 0c2134f9ad
2 changed files with 46 additions and 58 deletions
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84
plugins/OStatus/lib/magicenvelope.php
View File

@ -162,63 +162,64 @@ class MagicEnvelope
return $string;
}
/**
/*
* Extract the contained XML payload, and insert a copy of the envelope
* signature data as an <me:provenance> section.
*
* @return string representation of modified XML document
* @return DOMDocument of Atom entry
*
* @fixme in case of XML parsing errors, this will spew to the error log or output
*/
public function unfold()
public function getPayload()
{
$dom = new DOMDocument();
$dom->loadXML(Magicsig::base64_url_decode($this->data));
if ($dom->documentElement->tagName != 'entry') {
return false;
if (!$dom->loadXML(Magicsig::base64_url_decode($this->data))) {
throw new ServerException('Malformed XML in Salmon payload');
}
$prov = $dom->createElementNS(self::NS, 'me:provenance');
$prov->setAttribute('xmlns:me', self::NS);
$data = $dom->createElementNS(self::NS, 'me:data', $this->data);
$data->setAttribute('type', $this->data_type);
$prov->appendChild($data);
$enc = $dom->createElementNS(self::NS, 'me:encoding', $this->encoding);
$prov->appendChild($enc);
$alg = $dom->createElementNS(self::NS, 'me:alg', $this->alg);
$prov->appendChild($alg);
$sig = $dom->createElementNS(self::NS, 'me:sig', $this->sig);
$prov->appendChild($sig);
$dom->documentElement->appendChild($prov);
return $dom->saveXML();
switch ($this->data_type) {
case 'application/atom+xml':
if ($dom->documentElement->namespaceURI !== Activity::ATOM
|| $dom->documentElement->tagName !== 'entry') {
throw new ServerException(_m('Salmon post must be an Atom entry.'));
}
$prov = $dom->createElementNS(self::NS, 'me:provenance');
$prov->setAttribute('xmlns:me', self::NS);
$data = $dom->createElementNS(self::NS, 'me:data', $this->data);
$data->setAttribute('type', $this->data_type);
$prov->appendChild($data);
$enc = $dom->createElementNS(self::NS, 'me:encoding', $this->encoding);
$prov->appendChild($enc);
$alg = $dom->createElementNS(self::NS, 'me:alg', $this->alg);
$prov->appendChild($alg);
$sig = $dom->createElementNS(self::NS, 'me:sig', $this->sig);
$prov->appendChild($sig);
$dom->documentElement->appendChild($prov);
break;
default:
throw new ServerException('Unknown Salmon payload data type');
}
return $dom;
}
/**
* Find the author URI referenced in the given Atom entry.
* Find the author URI referenced in the payload Atom entry.
*
* @param string $text string containing Atom entry XML
* @return mixed URI string or false if XML parsing fails, or null if no author URI can be found
*
* @fixme XML parsing failures will spew to error logs/output
* @return string URI for author
* @throws ServerException on failure
*/
public function getAuthorUri($text) {
$doc = new DOMDocument();
if (!$doc->loadXML($text)) {
return FALSE;
}
public function getAuthorUri() {
$doc = $this->getPayload();
if ($doc->documentElement->tagName == 'entry') {
$authors = $doc->documentElement->getElementsByTagName('author');
foreach ($authors as $author) {
$uris = $author->getElementsByTagName('uri');
foreach ($uris as $uri) {
return $uri->nodeValue;
}
$authors = $doc->documentElement->getElementsByTagName('author');
foreach ($authors as $author) {
$uris = $author->getElementsByTagName('uri');
foreach ($uris as $uri) {
return $uri->nodeValue;
}
}
throw new ServerException('No author URI found in Salmon payload data');
}
/**
@ -241,11 +242,8 @@ class MagicEnvelope
return false;
}
// $this->data is base64_url_encoded and should contain XML which is passed to getAuthorUri
$text = Magicsig::base64_url_decode($this->data);
$signer_uri = $this->getAuthorUri($text);
try {
$signer_uri = $this->getAuthorUri();
$magicsig = $this->getKeyPair($signer_uri);
} catch (Exception $e) {
common_log(LOG_DEBUG, "Salmon error: ".$e->getMessage());

20
plugins/OStatus/lib/salmonaction.php
View File

@ -26,6 +26,8 @@ if (!defined('GNUSOCIAL')) { exit(1); }
class SalmonAction extends Action
{
protected $needPost = true;
var $xml = null;
var $activity = null;
var $target = null;
@ -36,12 +38,7 @@ class SalmonAction extends Action
parent::prepare($args);
if ($_SERVER['REQUEST_METHOD'] != 'POST') {
// TRANS: Client error. POST is a HTTP command. It should not be translated.
$this->clientError(_m('This method requires a POST.'));
}
if (empty($_SERVER['CONTENT_TYPE']) || $_SERVER['CONTENT_TYPE'] != 'application/magic-envelope+xml') {
if (!isset($_SERVER['CONTENT_TYPE']) || $_SERVER['CONTENT_TYPE'] != 'application/magic-envelope+xml') {
// TRANS: Client error. Do not translate "application/magic-envelope+xml".
$this->clientError(_m('Salmon requires "application/magic-envelope+xml".'));
}
@ -54,16 +51,9 @@ class SalmonAction extends Action
$this->clientError(_m('Salmon signature verification failed.'));
}
$xml = $magic_env->unfold(); // return the enveloped XML (the actual data)
$dom = DOMDocument::loadXML($xml);
if ($dom->documentElement->namespaceURI != Activity::ATOM ||
$dom->documentElement->localName != 'entry') {
common_log(LOG_DEBUG, "Got invalid Salmon post: $xml");
// TRANS: Client error.
$this->clientError(_m('Salmon post must be an Atom entry.'));
}
$entry = $magic_env->getPayload();
$this->activity = new Activity($dom->documentElement);
$this->activity = new Activity($entry->documentElement);
return true;
}