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-rw-r--r--Zotlabs/Lib/ZotURL.php91
1 files changed, 91 insertions, 0 deletions
diff --git a/Zotlabs/Lib/ZotURL.php b/Zotlabs/Lib/ZotURL.php
new file mode 100644
index 000000000..d1c705fcb
--- /dev/null
+++ b/Zotlabs/Lib/ZotURL.php
@@ -0,0 +1,91 @@
+<?php
+
+namespace Zotlabs\Lib;
+
+use Zotlabs\Zot6\HTTPSig;
+
+
+class ZotURL {
+
+ static public function fetch($url,$channel) {
+
+ $ret = [ 'success' => false ];
+
+ if(strpos($url,'x-zot:') !== 0) {
+ return $ret;
+ }
+
+
+ if(! $url) {
+ return $ret;
+ }
+
+ $portable_url = substr($url,6);
+ $u = explode('/',$portable_url);
+ $portable_id = $u[0];
+
+ $hosts = self::lookup($portable_id);
+
+ if(! $hosts) {
+ return $ret;
+ }
+
+ foreach($hosts as $h) {
+ $newurl = $h . '/id/' . $portable_url;
+
+ $m = parse_url($newurl);
+
+ $data = json_encode([ 'zot_token' => random_string() ]);
+
+ if($channel && $m) {
+
+ $headers = [
+ 'Accept' => 'application/x-zot+json',
+ 'Content-Type' => 'application/x-zot+json',
+ 'X-Zot-Token' => random_string(),
+ 'Digest' => HTTPSig::generate_digest_header($data),
+ 'Host' => $m['host'],
+ '(request-target)' => 'post ' . get_request_string($newurl)
+ ];
+ $h = HTTPSig::create_sig($headers,$channel['channel_prvkey'],channel_url($channel),false);
+ }
+ else {
+ $h = [ 'Accept: application/x-zot+json' ];
+ }
+
+ $result = [];
+
+ $redirects = 0;
+ $x = z_post_url($newurl,$data,$redirects, [ 'headers' => $h ] );
+ if($x['success']) {
+ return $x;
+ }
+ }
+
+ return $ret;
+
+ }
+
+ static public function is_zoturl($s) {
+
+ if(strpos($url,'x-zot:') === 0) {
+ return true;
+ }
+ return false;
+ }
+
+
+ static public function lookup($portable_id) {
+
+ $r = q("select * from hubloc left join site on hubloc_url = site_url where hubloc_hash = '%s' and site_dead = 0 order by hubloc_primary desc",
+ dbesc($portable_id)
+ );
+
+ if(! $r) {
+ // extend to network lookup
+ return false;
+ }
+ return ids_to_array($r,'hubloc_url');
+ }
+
+} \ No newline at end of file