download using LMS proxy

plugin/SqueezeESP32/Plugin.pm

@@ -3,6 +3,9 @@ package Plugins::SqueezeESP32::Plugin;
 use strict;
 
 use base qw(Slim::Plugin::Base);
+use File::Basename qw(basename);
+use File::Spec::Functions qw(catfile);
+use JSON::XS::VersionOneAndTwo;
 
 use Slim::Utils::Prefs;
 use Slim::Utils::Log;
@@ -16,6 +19,12 @@ my $log = Slim::Utils::Log->addLogCategory({
 	'description'  => 'PLUGIN_SQUEEZEESP32',
 });
 
+use constant GITHUB_ASSET_URI => "https://api.github.com/repos/sle118/squeezelite-esp32/releases/assets/";
+use constant GITHUB_DOWNLOAD_URI => "https://github.com/sle118/squeezelite-esp32/releases/download/";
+my $FW_DOWNLOAD_ID_REGEX = qr|plugins/SqueezeESP32/firmware/(-?\d+)|;
+my $FW_DOWNLOAD_REGEX = qr|plugins/SqueezeESP32/firmware/([-a-z0-9-/.]+\.bin)$|i;
+my $FW_FILENAME_REGEX = qr/^squeezelite-esp32-.*\.bin(\.tmp)?$/;
+
 # migrate 'eq' pref, as that's a reserved word and could cause problems in the future
 $prefs->migrateClient(1, sub {
 	my ($cprefs, $client) = @_;
@@ -58,6 +67,9 @@ sub initPlugin {
 	Slim::Control::Request::subscribe( sub { onNotification(@_) }, [ ['newmetadata'] ] );
 	Slim::Control::Request::subscribe( sub { onNotification(@_) }, [ ['playlist'], ['open', 'newsong'] ]);
 	Slim::Control::Request::subscribe( \&onStopClear, [ ['playlist'], ['stop', 'clear'] ]);
+
+	Slim::Web::Pages->addRawFunction($FW_DOWNLOAD_ID_REGEX, \&handleFirmwareDownload);
+	Slim::Web::Pages->addRawFunction($FW_DOWNLOAD_REGEX, \&handleFirmwareDownloadDirect);
 }
 
 sub onStopClear {
@@ -99,4 +111,137 @@ sub setEQ {
 	$client->send_equalizer(\@eqParams);
 }
 
+sub handleFirmwareDownload {
+	my ($httpClient, $response) = @_;
+
+	my $request = $response->request;
+
+	my $_errorDownloading = sub {
+		_errorDownloading($httpClient, $response, @_);
+	};
+
+	my $id;
+	if (!defined $request || !(($id) = $request->uri =~ $FW_DOWNLOAD_ID_REGEX)) {
+		return $_errorDownloading->(undef, 'Invalid request', $request->uri, 400);
+	}
+
+	# this is the magic number used on the client to figure out whether the plugin does support download proxying
+	if ($id == -99) {
+		$response->code(204);
+		$response->header('Access-Control-Allow-Origin' => '*');
+
+		$httpClient->send_response($response);
+		return Slim::Web::HTTP::closeHTTPSocket($httpClient);
+	}
+
+	Slim::Networking::SimpleAsyncHTTP->new(
+		sub {
+			my $http = shift;
+			my $content = eval { from_json( $http->content ) };
+
+			if (!$content || !ref $content) {
+				$@ && $log->error("Failed to parse response: $@");
+				return $_errorDownloading->($http);
+			}
+			elsif (!$content->{browser_download_url} || !$content->{name}) {
+				return $_errorDownloading->($http, 'No download URL found');
+			}
+
+			downloadAndStreamFirmware($httpClient, $response, $content->{browser_download_url}, $content->{name});
+		},
+		$_errorDownloading,
+		{
+			timeout => 10,
+			cache => 1,
+			expires => 86400
+		}
+	)->get(GITHUB_ASSET_URI . $id);
+
+	return;
+}
+
+sub handleFirmwareDownloadDirect {
+	my ($httpClient, $response) = @_;
+
+	my $request = $response->request;
+
+	my $_errorDownloading = sub {
+		_errorDownloading($httpClient, $response, @_);
+	};
+
+	my $path;
+	if (!defined $request || !(($path) = $request->uri =~ $FW_DOWNLOAD_REGEX)) {
+		return $_errorDownloading->(undef, 'Invalid request', $request->uri, 400);
+	}
+
+	main::INFOLOG && $log->is_info && $log->info("Requesting firmware from: $path");
+
+	downloadAndStreamFirmware($httpClient, $response, GITHUB_DOWNLOAD_URI . $path);
+}
+
+sub downloadAndStreamFirmware {
+	my ($httpClient, $response, $url, $name) = @_;
+
+	my $_errorDownloading = sub {
+		_errorDownloading($httpClient, $response, @_);
+	};
+
+	$name ||= basename($url);
+
+	if ($name !~ $FW_FILENAME_REGEX) {
+		return $_errorDownloading->(undef, 'Unexpected firmware image name: ' . $name, $url, 400);
+	}
+
+	my $updatesDir = Slim::Utils::OSDetect::dirsFor('updates');
+	my $firmwareFile = catfile($updatesDir, $name);
+	Slim::Utils::Misc::deleteFiles($updatesDir, $FW_FILENAME_REGEX, $firmwareFile);
+
+	if (-f $firmwareFile) {
+		main::INFOLOG && $log->is_info && $log->info("Found cached firmware version");
+		$response->code(200);
+		return Slim::Web::HTTP::sendStreamingFile($httpClient, $response, 'application/octet-stream', $firmwareFile, undef, 1);
+	}
+
+	Slim::Networking::SimpleAsyncHTTP->new(
+		sub {
+			my $http = shift;
+
+			if ($http->code != 200 || !-e "$firmwareFile.tmp") {
+				return $_errorDownloading->($http, $http->mess);
+			}
+
+			rename "$firmwareFile.tmp", $firmwareFile or return $_errorDownloading->($http, "Unable to rename temporary $firmwareFile file" );
+
+			$response->code(200);
+			Slim::Web::HTTP::sendStreamingFile($httpClient, $response, 'application/octet-stream', $firmwareFile, undef, 1);
+		},
+		$_errorDownloading,
+		{
+			saveAs => "$firmwareFile.tmp",
+		}
+	)->get($url);
+
+	return;
+}
+
+sub _errorDownloading {
+	my ($httpClient, $response, $http, $error, $url, $code) = @_;
+
+	$error ||= ($http && $http->error) || 'unknown error';
+	$url   ||= ($http && $http->url) || 'no URL';
+	$code  ||= ($http && $http->code) || 500;
+
+	$log->error(sprintf("Failed to get data from Github: %s (%s)", $error || $http->error, $url));
+
+	$response->headers->remove_content_headers;
+	$response->code($code);
+	$response->content_type('text/plain');
+	$response->header('Connection' => 'close');
+	$response->content('');
+
+	$httpClient->send_response($response);
+	Slim::Web::HTTP::closeHTTPSocket($httpClient);
+};
+
+
 1;

plugin/SqueezeESP32/install.xml

@@ -10,6 +10,6 @@
   <name>PLUGIN_SQUEEZEESP32</name>
   <description>PLUGIN_SQUEEZEESP32_DESC</description>
   <module>Plugins::SqueezeESP32::Plugin</module>
-    <version>0.231</version>
+    <version>0.300</version>
   <creator>Philippe</creator>
 </extensions>

plugin/repo.xml

@@ -1,10 +1,10 @@
 <?xml version='1.0' standalone='yes'?>
 <extensions>
   <plugins>
-    <plugin version="0.231" name="SqueezeESP32" minTarget="7.9" maxTarget="*">
+    <plugin version="0.300" name="SqueezeESP32" minTarget="7.9" maxTarget="*">
       <link>https://github.com/sle118/squeezelite-esp32</link>
       <creator>Philippe</creator>
-      <sha>1177359481198edd64e116d6d1dc4fd2bcdfa021</sha>
+      <sha>0763bf75e2c8e7d535d50959916053d865ce2c4d</sha>
       <email>philippe_44@outlook.com</email>
       <desc lang="EN">SqueezeESP32 additional player id (100)</desc>
       <url>http://github.com/sle118/squeezelite-esp32/raw/master/plugin/SqueezeESP32.zip</url>