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Fix incomplete webfinger data for OStatus

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Michael 2017-07-25 21:46:14 +00:00
parent f3f42ae3a2
commit 955229e131
1 changed files with 75 additions and 2 deletions
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77
src/Network/Probe.php
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@ -403,6 +403,70 @@ class Probe {
return $data;
}
/**
* @brief Switch the scheme of an url between http and https
*
* @param string $url URL
*
* @return string switched URL
*/
private function switch_scheme($url) {
$parts = parse_url($url);
if (!isset($parts['scheme'])) {
return $url;
}
if ($parts['scheme'] == 'http') {
$url = str_replace('http://', 'https://', $url);
} elseif ($parts['scheme'] == 'https') {
$url = str_replace('https://', 'http://', $url);
}
return $url;
}
/**
* @brief Checks if a profile url should be OStatus but only provides partial information
*
* @param array $webfinger Webfinger data
* @param string $lrdd Path template for webfinger request
*
* @return array fixed webfinger data
*/
private function fix_ostatus($webfinger, $lrdd) {
if (empty($webfinger['links']) || empty($webfinger['subject'])) {
return $webfinger;
}
$is_ostatus = false;
$has_key = false;
foreach ($webfinger['links'] as $link) {
if ($link['rel'] == NAMESPACE_OSTATUSSUB) {
$is_ostatus = true;
}
if ($link['rel'] == 'magic-public-key') {
$has_key = true;
}
}
if (!$is_ostatus || $has_key) {
return $webfinger;
}
$url = self::switch_scheme($webfinger['subject']);
$path = str_replace('{uri}', urlencode($url), $lrdd);
$webfinger2 = self::webfinger($path);
// Is the new webfinger detectable as OStatus?
if (self::ostatus($webfinger2, true)) {
$webfinger = $webfinger2;
}
return $webfinger;
}
/**
* @brief Fetch information (protocol endpoints and user information) about a given uri
*
@ -500,6 +564,9 @@ class Probe {
$path = str_replace('{uri}', urlencode($uri), $link);
$webfinger = self::webfinger($path);
// Fix possible problems with GNU Social probing to wrong scheme
$webfinger = self::fix_ostatus($webfinger, $link);
// We cannot be sure that the detected address was correct, so we don't use the values
if ($webfinger && ($uri != $addr)) {
$nick = "";
@ -1057,10 +1124,11 @@ class Probe {
* @brief Check for OStatus contact
*
* @param array $webfinger Webfinger data
* @param bool $short Short detection mode
*
* @return array OStatus data
* @return array|bool OStatus data or "false" on error or "true" on short mode
*/
private function ostatus($webfinger) {
private function ostatus($webfinger, $short = false) {
$data = array();
if (is_array($webfinger["aliases"])) {
foreach ($webfinger["aliases"] as $alias) {
@ -1119,6 +1187,11 @@ class Probe {
} else {
return false;
}
if ($short) {
return true;
}
// Fetch all additional data from the feed
$ret = z_fetch_url($data["poll"]);
if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {