function follow_http_redirects($url, $redirects = 5)
{
$result = false;
$referer = null;
while ($redirects-- >= 0) {
list($protocol, , $hostname, $path) = explode("/", $url, 4);
if ($protocol == "http:") {
$http = new HTTP($hostname);
} else {
if ($protocol == "https:") {
$http = new HTTPS($hostname);
} else {
break;
}
}
if ($referer != null) {
$http->add_header("Referer", $referer);
}
$result = $http->GET("/" . $path);
unset($http);
$referer = $url;
if ($result === false) {
break;
} else {
if ($result["status"] != 301 && $result["status"] != 302) {
break;
} else {
if (($url = $result["headers"]["location"]) == "") {
break;
}
}
}
}
return $result;
}
public function execute()
{
if ($this->page->ajax_request) {
if ($this->page->pathinfo[1] == null) {
$this->output->add_tag("max_alert_count", count($this->alerts));
$this->output->add_tag("page_refresh", $this->settings->dashboard_page_refresh);
} else {
$this->show_alert($this->page->pathinfo[1]);
}
return;
}
if (isset($_SESSION["latest_hiawatha_version"]) == false) {
$hiawatha_website = new HTTPS("www.hiawatha-webserver.org");
if (($result = $hiawatha_website->GET("/latest")) !== false) {
$_SESSION["latest_hiawatha_version"] = $result["body"];
}
}
if (isset($_SESSION["latest_mbedtls_version"]) == false) {
$mbedtls_website = new HTTPS("tls.mbed.org");
if (($result = $mbedtls_website->GET("/download/latest-stable-version")) !== false) {
$_SESSION["latest_mbedtls_version"] = $result["body"];
}
}
/* Webserver
*/
if (($webservers = $this->model->get_webservers()) === false) {
return;
}
$webservers_offline = false;
foreach ($webservers as $webserver) {
$webserver["address"] = ($webserver["tls"] == 0 ? "http" : "https") . "://" . $webserver["ip_address"];
if ($webserver["tls"] == 0 && $webserver["port"] != 80 || $webserver["tls"] == 1 && $webserver["port"] != 443) {
$webserver["address"] .= ":" . $webserver["port"];
}
$webserver["address"] .= "/";
if ($webserver["active"]) {
if ($webserver["errors"] == 0) {
$webserver["status"] = "online";
} else {
$webserver["status"] = "offline";
$webservers_offline = true;
}
}
$webserver["tls"] = show_boolean($webserver["tls"]);
$webserver["active"] = show_boolean($webserver["active"]);
if ($webserver["version"] != "") {
$parts = explode(",", $webserver["version"]);
list(, $version) = explode("v", $parts[0], 2);
$comparison = version_compare($version, $_SESSION["latest_hiawatha_version"], ">=");
$webserver["uptodate"] = show_boolean($comparison);
foreach ($parts as $part) {
if (in_array(substr(ltrim($part), 0, 3), array("TLS", "SSL"))) {
$version = trim(substr($part, 4), " ()");
if (version_compare($version, $_SESSION["latest_mbedtls_version"], "<")) {
$webserver["uptodate"] .= " (mbed TLS out of date)";
}
}
}
}
$this->output->record($webserver, "webserver");
}
if ($webservers_offline) {
$this->output->add_system_message("Warning, one or more webservers are unavailable!");
}
/* Alerts
*/
$this->output->add_javascript("jquery/jquery-ui.js");
$this->output->add_javascript("dashboard.js");
$this->output->add_css("jquery/jquery-ui.css");
$this->output->add_tag("threshold_change", $this->settings->dashboard_threshold_change);
$this->output->add_tag("threshold_value", $this->settings->dashboard_threshold_value);
$this->output->add_tag("page_refresh", $this->settings->dashboard_page_refresh);
}