#!/usr/bin/env php
<?php

if ($argc < 2) {
	fprintf(STDERR, "Usage: %s <pkg_name> [.ext.phar command line options]\n", $argv[0]);
	exit(1);
}

function bail() {
	$error = error_get_last();
	if (!($error["type"] & error_reporting())) {
		fprintf(STDERR, "%s\n", $error["message"]);
	}
	exit(2);
}

$cmp_mask = Phar::canCompress(Phar::GZ) | (Phar::canCompress(Phar::BZ2) << 1);
$file_ext = ["", ".gz", ".bz2", ".bz2"][$cmp_mask];
$base_url = "https://replicator.pharext.org/";
$json_ctx = stream_context_create(["http"=>["header"=>"Accept:application/json"]]) or bail();
$pkg_name = $argv[1];
$pkg_json = file_get_contents($base_url . "?" . $pkg_name, false, $json_ctx) or bail();
$pkg_data = json_decode($pkg_json, true) or bail();
$rel_data = end($pkg_data);
$pkg_path = $rel_data[$file_ext]["phar"];
$sig_path = $rel_data[$file_ext]["sigs"]["rsa"];
$pkg_file = basename($pkg_path);
$pkg_data = file_get_contents($base_url . $pkg_path) or bail();
$sig_data = file_get_contents($base_url . $sig_path) or bail();
$key_data = file_get_contents($base_url . "replicator.pub") or bail();

openssl_verify($pkg_data, $sig_data, $key_data, "sha256") or
	(function() {
		while (($error = openssl_error_string())) echo $error,"\n";
		exit(3);
	})();

$argv = array_slice($argv, 1, --$argc);
file_put_contents($pkg_file, $pkg_data) or bail();
(include $pkg_file) or bail();