n/shaarli-plugin-shaargem
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shaarli-plugin-shaargem
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#1 handle redirects

This commit is contained in:
n 2021-02-28 00:11:09 +01:00
parent 6b37eaf919
commit b0da900d3f
Signed by: n
GPG Key ID: E96086FC951DAE30
1 changed files with 56 additions and 42 deletions
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98
shaargem.php
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@ -9,6 +9,7 @@ use Shaarli\Config\ConfigManager;
use Shaarli\Plugin\PluginManager;
use Shaarli\Render\TemplatePage;
static $redirect_counter = 0;
/**
* In the footer hook, there is a working example of a translation extension for Shaarli.
*
@ -19,6 +20,7 @@ use Shaarli\Render\TemplatePage;
*/
const EXT_TRANSLATION_DOMAIN = 'shaargem';
/*
* This is not necessary, but it's easier if you don't want Poedit to mix up your translations.
*/
@ -60,48 +62,7 @@ function shaargem_init($conf)
*/
function hook_shaargem_render_editlink($data)
{
$ret = preg_match(",gemini://([\d\w\.\+\-@\:%._\~#=]+)/?,", $data['link']['url'] ,$domain);
error_log("ret:".$ret);
if ($ret)
{
$stream_context = stream_context_create([ 'ssl' => [
'verify_peer' => false,
'verify_peer_name' => false,
'allow_self_signed' => true,
'verify_depth' => 0 ]]);
$fp = stream_socket_client("tls://".$domain[1].":1965", $errno, $errstr, 30, STREAM_CLIENT_CONNECT, $stream_context);
if (!$fp) {
error_log("$errstr ($errno)");
} else {
fwrite($fp, $data['link']['url']."\r\n");
$header = fgets($fp);
$ret = preg_match(",^(\d\d) (.*)\r\n$,", $header, $headers);
$status = $headers[1];
$meta = $headers[2];
error_log("status:".$status.", meta:".$meta);
if (strstr($header, "20 text/gemini"))
{
$nblines = 1;
while($line = fgets($fp)) {
$ret = preg_match(",# (.*),",$line,$title);
if ($title[0] or $nblines > 100 ) {
error_log($nblines);
break;
}
$nblines++;
}
$data['link']['title'] = $title[1];
}
else
{
error_log("[shaargem] invalid response:".$header);
}
fclose($fp);
}
}
$data['link']['title'] = fetch_iri_title($data['link']['url']);
return $data;
}
@ -161,3 +122,56 @@ function shaargem_dummy_translation()
t('Provides Gemini protocol support.');
}
function fetch_iri_title($iri)
{
$ret = preg_match(",gemini://([\d\w\.\+\-@\:%._\~#=]+)/?,", $iri ,$domain);
static $redirect_counter = 0;
error_log("ret:".$ret);
if ($ret)
{
$stream_context = stream_context_create([ 'ssl' => [
'verify_peer' => false,
'verify_peer_name' => false,
'allow_self_signed' => true,
'verify_depth' => 0 ]]);
$fp = stream_socket_client("tls://".$domain[1].":1965", $errno, $errstr, 30, STREAM_CLIENT_CONNECT, $stream_context);
if (!$fp) {
error_log("$errstr ($errno)");
} else {
fwrite($fp, $iri."\r\n");
$header = fgets($fp);
error_log("headers:".$headers);
$ret = preg_match(",^(\d\d) (.*)\r\n$,", $header, $headers);
$status = $headers[1];
$meta = $headers[2];
error_log("status:".$status.", meta:".$meta);
$max_redirects = 10;
if ($status[0] == 3 and $redirect_counter < $max_redirects)
{
$redirect_counter++;
error_log("[shaargem] found status 30. redirecting to ".$meta." (".$redirect_counter."/".$max_redirects.")");
$title[1] = fetch_iri_title($meta);
}
elseif ($status[0] == 2)
{
$nblines = 1;
while($line = fgets($fp)) {
$ret = preg_match(",# (.*),",$line,$title);
if ($title[0] or $nblines > 100 ) {
error_log($nblines);
break;
}
$nblines++;
}
}
else
{
error_log("[shaargem] invalid response:".$header);
}
fclose($fp);
}
}
return $title[1];
}