[pve-devel] [PATCH v2 common 3/4] acme: add challenge plugins

[Thomas Lamprecht]

On 4/19/18 2:01 PM, Fabian Grünbichler wrote:
> Signed-off-by: Fabian Grünbichler <f.gruenbichler at proxmox.com>
> ---
>  src/PVE/ACME/Challenge.pm  | 22 ++++++++++++++
>  src/PVE/ACME/StandAlone.pm | 74 ++++++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 96 insertions(+)
>  create mode 100644 src/PVE/ACME/Challenge.pm
>  create mode 100644 src/PVE/ACME/StandAlone.pm
> 
> diff --git a/src/PVE/ACME/Challenge.pm b/src/PVE/ACME/Challenge.pm
> new file mode 100644
> index 0000000..40d32b6
> --- /dev/null
> +++ b/src/PVE/ACME/Challenge.pm
> @@ -0,0 +1,22 @@
> +package PVE::ACME::Challenge;
> +
> +use strict;
> +use warnings;
> +
> +sub supported_challenge_types {
> +    return {};
> +}
> +
> +sub setup {
> +    my ($class, $acme, $authorization) = @_;
> +
> +    die "implement me\n";
> +}
> +
> +sub teardown {
> +    my ($self) = @_;
> +
> +    die "implement me\n";
> +}
> +
> +1;
> diff --git a/src/PVE/ACME/StandAlone.pm b/src/PVE/ACME/StandAlone.pm
> new file mode 100644
> index 0000000..0d82213
> --- /dev/null
> +++ b/src/PVE/ACME/StandAlone.pm
> @@ -0,0 +1,74 @@
> +package PVE::ACME::StandAlone;
> +
> +use strict;
> +use warnings;
> +
> +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 = PVE::ACME::StandAlone::Server->new(80);
> +    $server->{key_auth} = $key_authorization;
> +    my $pid = $server->background();
> +
> +    my $self = {
> +	server => $server,
> +	pid => $pid,
> +	authorization => $authorization,
> +	key_auth => $key_authorization,
> +	url => $http_challenge->{url},
> +    };
> +
> +    return bless $self, $class;
> +}
> +
> +sub teardown {
> +    my ($self) = @_;
> +
> +    kill 'KILL', $self->{pid};
> +}
> +
> +1;
> +
> +package PVE::ACME::StandAlone::Server;
> +
> +use HTTP::Server::Simple::CGI;
> +use base qw(HTTP::Server::Simple::CGI);

needs a new dependency on libhttp-server-simple-perl ...

We depend already on libwww-perl here (and access-control and apiclient),
which also provides a server module AFAIK.

Maybe it would be nicer to reuse this, if possible?

> +
> +sub handle_request {
> +    my $self = shift;
> +    my $cgi  = shift;
> +
> +    my $key_auth = $self->{key_auth};
> +    $key_auth =~ /^(.*)\..*$/;
> +    my $token = $1;
> +
> +    my $path = $cgi->path_info();
> +    if ($path eq "/.well-known/acme-challenge/${token}") {
> +	print "HTTP/1.0 200 OK\r\n";
> +	print $cgi->header, $key_auth;
> +    } else {
> +	print "HTTP/1.0 404 Not found\r\n";
> +	print $cgi->header;
> +    }
> +}
> +
> +1;
>