acme: add challenge plugins

[pve-common.git] / src / PVE / ACME / StandAlone.pm

diff --git a/src/PVE/ACME/StandAlone.pm b/src/PVE/ACME/StandAlone.pm
new file mode 100644 (file)
index 0000000..f48d638
--- /dev/null
+++ b/src/PVE/ACME/StandAlone.pm
@@ -0,0 +1,71 @@
+package PVE::ACME::StandAlone;
+
+use strict;
+use warnings;
+
+use HTTP::Daemon;
+use HTTP::Response;
+
+use base qw(PVE::ACME::Challenge);
+
+sub supported_challenge_types {
+    return { 'http-01' => 1 };
+}
+
+sub setup {
+    my ($class, $acme, $authorization) = @_;
+
+    my $challenges = $authorization->{challenges};
+    die "no challenges defined in authorization\n" if !$challenges;
+
+    my $http_challenges = [ grep {$_->{type} eq 'http-01'} @$challenges ];
+    die "no http-01 challenge defined in authorization\n"
+       if ! scalar $http_challenges;
+
+    my $http_challenge = $http_challenges->[0];
+
+    die "no token found in http-01 challenge\n" if !$http_challenge->{token};
+
+    my $key_authorization = $acme->key_authorization($http_challenge->{token});
+
+    my $server = HTTP::Daemon->new(
+       LocalPort => 80,
+       ReuseAddr => 1,
+    ) or die "Failed to initialize HTTP daemon\n";
+    my $pid = fork() // die "Failed to fork HTTP daemon - $!\n";
+    if ($pid) {
+       my $self = {
+           server => $server,
+           pid => $pid,
+           authorization => $authorization,
+           key_auth => $key_authorization,
+           url => $http_challenge->{url},
+       };
+
+       return bless $self, $class;
+    } else {
+       while (my $c = $server->accept()) {
+           while (my $r = $c->get_request()) {
+               if ($r->method() eq 'GET' and $r->uri->path eq "/.well-known/acme-challenge/$http_challenge->{token}") {
+                   my $resp = HTTP::Response->new(200, 'OK', undef, $key_authorization);
+                   $resp->request($r);
+                   $c->send_response($resp);
+               } else {
+                   $c->send_error(404, 'Not found.')
+               }
+           }
+           $c->close();
+           $c = undef;
+       }
+    }
+}
+
+sub teardown {
+    my ($self) = @_;
+
+    eval { $self->{server}->close() };
+    kill('KILL', $self->{pid});
+    waitpid($self->{pid}, 0);
+}
+
+1;