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server.php
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<?php
// PHP App Server.
// (C) 2019 CubicleSoft. All Rights Reserved.
if (!isset($_SERVER["argc"]) || !$_SERVER["argc"])
{
echo "This file is intended to be run from the command-line.";
exit();
}
// Temporary root.
$rootpath = str_replace("\\", "/", dirname(__FILE__));
require_once $rootpath . "/support/cli.php";
require_once $rootpath . "/support/str_basics.php";
require_once $rootpath . "/support/random.php";
require_once $rootpath . "/support/pas_functions.php";
// Process the command-line options.
$options = array(
"shortmap" => array(
"?" => "help"
),
"rules" => array(
"home" => array("arg" => true),
"app" => array("arg" => true),
"biz" => array("arg" => true),
"host" => array("arg" => true),
"port" => array("arg" => true),
"user" => array("arg" => true),
"group" => array("arg" => true),
"sfile" => array("arg" => true),
"quit" => array("arg" => true),
"exts" => array("arg" => true),
"www" => array("arg" => true),
"help" => array("arg" => false)
)
);
$args = CLI::ParseCommandLine($options);
if (isset($args["opts"]["help"]))
{
echo "PHP App Server\n";
echo "Purpose: Runs a pure userland PHP web server with virtual directory support and without any external dependencies.\n";
echo "\n";
echo "Syntax: " . $args["file"] . " [options]\n";
echo "Options:\n";
echo "\t-home The home directory to store user files in. Default is the user's home directory.\n";
echo "\t-app The application name to use for storing user files. Default is the directory name.\n";
echo "\t-biz The business name to use for storing configuration and log files.\n";
echo "\t-host The IP address to bind to. Default is 127.0.0.1.\n";
echo "\t-port The port to bind to. Default is 0 (random).\n";
echo "\t-user The user to run PHP scripts as when using CGI/FastCGI. *NIX only.\n";
echo "\t-group The group to run PHP scripts as when using CGI/FastCGI. *NIX only.\n";
echo "\t-sfile The file to store startup JSON information into.\n";
echo "\t-quit The number of seconds to wait without any connected clients. The default is to never quit.\n";
echo "\t-exts The server extensions directory to use. Default is the 'extensions' directory.\n";
echo "\t-www The document root to use. Default is the 'www' directory.\n";
echo "\n";
echo "Examples:\n";
echo "\tphp " . $args["file"] . "\n";
echo "\tphp " . $args["file"] . " -host [::1] -port 5582\n";
exit();
}
// Load MIME types.
$mimetypemap = json_decode(file_get_contents($rootpath . "/support/mime_types.json"), true);
// Load all server extensions.
if (isset($args["opts"]["exts"])) $extspath = $args["opts"]["exts"];
else $extspath = $rootpath . "/extensions";
$serverexts = PAS_LoadServerExtensions($extspath);
// Initialize server extensions.
foreach ($serverexts as $serverext)
{
$serverext->InitServer();
}
require_once $rootpath . "/support/web_server.php";
require_once $rootpath . "/support/websocket_server.php";
require_once $rootpath . "/support/process_helper.php";
function WriteStartupInfo($result)
{
global $args;
if (isset($args["opts"]["sfile"])) file_put_contents($args["opts"]["sfile"], json_encode($result, JSON_UNESCAPED_SLASHES));
if (!$result["success"]) CLI::DisplayError("An error occurred while starting the server.", $result);
}
// Find 'php-cgi' or 'php-fpm' depending on the platform.
$os = php_uname("s");
$windows = (strtoupper(substr($os, 0, 3)) == "WIN");
if ($windows)
{
$cgibin = dirname(PHP_BINARY) . "\\php-cgi.exe";
if (!file_exists($cgibin)) WriteStartupInfo(array("success" => false, "error" => "Unable to start server due to missing executable. Expected 'php-cgi.exe'.", "errorcode" => "missing_php_cgi"));
$cgibin = escapeshellarg($cgibin);
}
else
{
$cgibin = ProcessHelper::FindExecutable("php-cgi", "/usr/bin");
//$cgibin = false;
// Certain supported platforms, notably Mac OSX, does not include 'php-cgi'. However, 'php-fpm' may already be available on the platform.
// php-cgi generally offers a slightly better security model than php-fpm in UNIX socket mode (TCP mode is insecure) and is easier to work with even if it is a bit slower at actually handling requests.
if ($cgibin !== false) $cgibin = escapeshellarg($cgibin);
else
{
$fpmbin = ProcessHelper::FindExecutable("php-fpm", "/usr/sbin");
// $fpmbin = ProcessHelper::FindExecutable("php-fpm7.2", "/usr/sbin");
if ($fpmbin === false) WriteStartupInfo(array("success" => false, "error" => "Unable to start server due to missing executable. Expected 'php-cgi' or 'php-fpm'.", "errorcode" => "missing_php_cgi"));
$fpmdir = ProcessHelper::MakeTempDir("php_app_server_fpm", 0700);
// Generate a PHP-FPM configuration file.
$data = "[global]\n";
$data .= "pid = php-fpm.pid\n";
$data .= "error_log = error.log\n";
$data .= "daemonize = no\n";
$data .= "\n";
$data .= "[www]\n";
$data .= "user = " . (isset($args["opts"]["user"]) ? $args["opts"]["user"] : ProcessHelper::GetUserName(posix_geteuid())) . "\n";
if (isset($args["opts"]["group"])) $data .= "group = " . $args["opts"]["group"] . "\n";
$data .= "listen = php-fpm.sock\n";
$data .= "listen.mode = 0600\n";
$data .= "pm = ondemand\n";
$data .= "pm.max_children = 50\n";
$data .= "pm.max_requests = 500\n";
file_put_contents($fpmdir . "/php-fpm.conf", $data);
// Start PHP-FPM.
$cmd = escapeshellarg($fpmbin) . " -p " . escapeshellarg($fpmdir) . " --fpm-config " . escapeshellarg($fpmdir . "/php-fpm.conf") . " -F -R";
$fpminfo = ProcessHelper::StartProcess($cmd, array("stdin" => false, "stdout" => false, "stderr" => $fpmdir . "/stderr.log"));
if (!$fpminfo["success"]) WriteStartupInfo(array("success" => false, "error" => "Unable to start PHP-FPM. Process failed to start.", "errorcode" => "php_fpm_startup_failed"));
// Wait for the UNIX socket to come up (or the process to die).
while (!file_exists($fpmdir . "/php-fpm.sock"))
{
usleep(50000);
$pinfo = @proc_get_status($fpminfo["proc"]);
if (!$pinfo["running"]) WriteStartupInfo(array("success" => false, "error" => "Unable to start PHP-FPM. Process terminated prematurely.", "errorcode" => "php_fpm_startup_failed"));
}
// Retrieve FastCGI information.
require_once $rootpath . "/support/fastcgi.php";
// The FastCGI implementation in PHP, including PHP-FPM, is unable to properly handle basic information requests.
// See: https://bugs.php.net/bug.php?id=76922
$fcgi = new FastCGI();
$result = $fcgi->Connect("unix://" . $fpmdir . "/php-fpm.sock");
if (!$result["success"]) WriteStartupInfo(array("success" => false, "error" => "PHP-FPM started successfully but attempting to connect to the UNIX socket failed.", "errorcode" => "fastcgi_connect_failed"));
$fcgi->RequestUpdatedLimits();
$result = $fcgi->Wait();
while ($result["success"] && !$fcgi->GetRecvRecords())
{
do
{
$result = $fcgi->NextReadyRequest();
if (!$result["success"] || $result["id"] === false) break;
} while (1);
$result = $fcgi->Wait();
}
if (!$fcgi->GetRecvRecords()) WriteStartupInfo(array("success" => false, "error" => "PHP-FPM started and the first connection was successful but attempting to retrieve FastCGI information failed.", "errorcode" => "fastcgi_info_retrieval_failed"));
$fcgilimits = array(
"connection" => $fcgi->GetConnectionLimit(),
"concurrency" => $fcgi->GetConncurrencyLimit(),
"multiplex" => $fcgi->CanMultiplex(),
);
$fcgi->Disconnect();
}
}
function InitClientAppData()
{
return array("currext" => false, "url" => false, "path" => false, "cgi" => false, "fcgi" => false, "file" => false, "respcode" => 200, "respmsg" => "OK", "auth" => false);
}
// Extends the web server class to gather transfer statistics.
class StatsWebServer extends WebServer
{
protected function HandleResponseCompleted($id, $result)
{
$client = $this->GetClient($id);
if ($client === false || $client->appdata === false) return;
if ($client->appdata["currext"] !== false) $handler = "ext";
else if ($client->appdata["cgi"] !== false) $handler = "cgi";
else if ($client->appdata["fcgi"] !== false) $handler = "fastcgi";
else if ($client->appdata["file"] !== false) $handler = "static";
else $handler = "other/none";
$stats = array(
"rawrecv" => ($result["success"] ? $result["rawrecvsize"] : $client->httpstate["result"]["rawrecvsize"]),
"rawrecvhead" => ($result["success"] ? $result["rawrecvheadersize"] : $client->httpstate["result"]["rawrecvheadersize"]),
"rawsend" => ($result["success"] ? $result["rawsendsize"] : $client->httpstate["result"]["rawsendsize"]),
"rawsendhead" => ($result["success"] ? $result["rawsendheadersize"] : $client->httpstate["result"]["rawsendheadersize"]),
);
$info = array(
"ext" => $client->appdata["currext"],
"handler" => $handler,
"code" => $client->appdata["respcode"],
"msg" => $client->appdata["respmsg"]
);
WriteAccessLog("WebServer:" . $id, $client->ipaddr, $client->request, $stats, $info);
// Reset app data.
if ($client->appdata["cgi"] !== false)
{
foreach ($client->appdata["cgi"]["pipes"] as $fp) fclose($fp);
proc_close($client->appdata["cgi"]["proc"]);
if (trim($client->appdata["cgi"]["stderr"]) !== "")
{
WriteErrorLog("CGI Error [" . $id . "]", $client->ipaddr, $client->request, array("msg" => trim($client->appdata["cgi"]["stderr"])));
echo "\t" . trim($client->appdata["cgi"]["stderr"]) . "\n";
}
}
if ($client->appdata["fcgi"] !== false)
{
$client->appdata["fcgi"]["conn"]->Disconnect();
$request = $client->appdata["fcgi"]["request"];
if (trim($request->stderr) !== "")
{
WriteErrorLog("FastCGI Error [" . $id . "]", $client->ipaddr, $client->request, array("msg" => trim($request->stderr)));
echo "\t" . trim($request->stderr) . "\n";
}
}
if ($client->appdata["file"] !== false && isset($client->appdata["file"]["fp"]) && $client->appdata["file"]["fp"] !== false) fclose($client->appdata["file"]["fp"]);
$client->appdata = InitClientAppData();
}
}
$webserver = new StatsWebServer();
// Enable writing files to the system.
$cachedir = WebServer::MakeTempDir("php_app_server");
$webserver->SetCacheDir($cachedir);
// Enable longer active client times.
$webserver->SetDefaultClientTimeout(300);
$webserver->SetMaxRequests(200);
if (!isset($args["opts"]["host"])) $args["opts"]["host"] = "127.0.0.1";
if (!isset($args["opts"]["port"])) $args["opts"]["port"] = "0";
$initresult = $webserver->Start($args["opts"]["host"], $args["opts"]["port"], false);
if (!$initresult["success"]) WriteStartupInfo($initresult);
// Prepare the initial response line.
$tempip = stream_socket_get_name($webserver->GetStream(), false);
$pos = strrpos($tempip, ":");
if ($pos !== false) $args["opts"]["port"] = substr($tempip, $pos + 1);
$initresult["url"] = "http://" . $args["opts"]["host"] . ":" . (int)$args["opts"]["port"] . "/";
$initresult["port"] = (int)$args["opts"]["port"];
// Core function for forwarding and rate limiting incoming data from the browser into PHP CGI stdin.
function ProcessClientCGIRequestBody($request, $body, $id)
{
global $webserver;
$client = $webserver->GetClient($id);
if ($client === false || $client->appdata === false) return false;
if ($client->appdata["cgi"] === false) return false;
$pinfo = @proc_get_status($client->appdata["cgi"]["proc"]);
if (!$pinfo["running"]) return false;
$client->appdata["cgi"]["stdin"] .= $body;
// Write as much data as possible.
$fp = $client->appdata["cgi"]["pipes"][0];
$result = fwrite($fp, (strlen($client->appdata["cgi"]["stdin"]) > 16384 ? substr($client->appdata["cgi"]["stdin"], 0, 16384) : $client->appdata["cgi"]["stdin"]));
if ($result === false || feof($fp)) return false;
// Serious bug in PHP core for all handle types: https://bugs.php.net/bug.php?id=73535
if ($result === 0)
{
$fp2 = $client->appdata["cgi"]["pipes"][1];
$data = fread($fp2, 1);
if ($data === false) return false;
if ($data === "" && feof($fp2)) return false;
if ($data !== "") $client->appdata["cgi"]["stdout"] .= $data;
}
else
{
$client->appdata["cgi"]["stdin"] = substr($client->appdata["cgi"]["stdin"], $result);
$client->appdata["cgi"]["stdinbytes"] += $result;
}
// Dynamically adjust the client receive rate limit so that the amount of input data generally doesn't exceed the OS pipe limits and to keep RAM usage low.
$difftime = microtime(true) - $client->appdata["cgi"]["start"];
if ($result === 0 || $difftime > 1.0)
{
$sendrate = $client->appdata["cgi"]["stdinbytes"] / $difftime;
if ($sendrate < strlen($client->appdata["cgi"]["stdin"])) $sendrate *= 0.5;
else $sendrate *= 1.1;
$sendrate = (int)$sendrate;
if ($sendrate < 1024) $sendrate = 1024;
$client->httpstate["options"]["recvratelimit"] = $sendrate;
// Reset the rate limit tracker every 10 seconds.
if ($difftime >= 10.0)
{
$client->appdata["cgi"]["start"] += $difftime;
$client->appdata["cgi"]["stdinbytes"] = 0;
}
}
return true;
}
// Core function for forwarding and rate limiting incoming data from the browser into PHP FastCGI stdin.
function ProcessClientFastCGIRequestBody($request, $body, $id)
{
global $webserver;
$client = $webserver->GetClient($id);
if ($client === false || $client->appdata === false) return false;
if ($client->appdata["fcgi"] === false) return false;
$fcgi = $client->appdata["fcgi"]["conn"];
if ($body !== "")
{
$result2 = $fcgi->SendStdin($client->appdata["fcgi"]["request"]->id, $body);
if (!$result2["success"]) return false;
}
$initsize = $fcgi->GetRawSendSize();
if ($fcgi->NeedsWrite())
{
// Process queues. Always attempts to read one byte of data in order to mitigate a serious bug in PHP: https://bugs.php.net/bug.php?id=73535
$result2 = $fcgi->ProcessQueues(true, true, 1);
if (!$result2["success"]) return false;
}
// Dynamically adjust the client receive rate limit so that the amount of input data generally doesn't exceed the FastCGI transfer limit and to keep RAM usage low.
$diffsize = $fcgi->GetRawSendSize() - $initsize;
$difftime = microtime(true) - $client->appdata["fcgi"]["start"];
if ($diffsize === 0 || $difftime > 1.0)
{
$sendrate = ($initsize + $diffsize - $client->appdata["fcgi"]["startbytes"]) / $difftime;
if ($sendrate < $fcgi->GetRawSendQueueSize()) $sendrate *= 0.5;
else $sendrate *= 1.1;
$sendrate = (int)$sendrate;
if ($sendrate < 1024) $sendrate = 1024;
$client->httpstate["options"]["recvratelimit"] = $sendrate;
// Reset the rate limit tracker every 10 seconds.
if ($difftime >= 10.0)
{
$client->appdata["fcgi"]["start"] += $difftime;
$client->appdata["fcgi"]["startbytes"] = $initsize + $diffsize;
}
}
return true;
}
$accessfpnum = 0;
function WriteAccessLog($trace, $ipaddr, $request, $stats, $info)
{
global $accessfp, $accessfpnum;
$accessfpnum++;
fwrite($accessfp, json_encode(array("#" => $accessfpnum, "ts" => time(), "gmt" => gmdate("Y-m-d H:i:s"), "trace" => $trace, "ip" => $ipaddr, "req" => $request, "stats" => $stats, "info" => $info), JSON_UNESCAPED_SLASHES) . "\n");
fflush($accessfp);
echo $trace . " - ";
if (is_string($request)) echo $request;
else if (isset($request["line"])) echo $request["line"];
else echo json_encode($request, JSON_UNESCAPED_SLASHES);
echo "\n";
echo "\tReceived " . number_format($stats["rawrecv"], 0) . " bytes; Sent " . number_format($stats["rawsend"], 0) . " bytes\n";
echo "\t" . json_encode($info, JSON_UNESCAPED_SLASHES) . "\n";
}
$errorfpnum = 0;
function WriteErrorLog($trace, $ipaddr, $request, $info)
{
global $errorfp, $errorfpnum;
$errorfpnum++;
fwrite($errorfp, json_encode(array("#" => $errorfpnum, "ts" => time(), "gmt" => gmdate("Y-m-d H:i:s"), "trace" => $trace, "ip" => $ipaddr, "req" => $request, "info" => $info), JSON_UNESCAPED_SLASHES) . "\n");
fflush($errorfp);
}
function SendHTTPErrorResponse($client)
{
// Reset the response headers.
if (!$client->responsefinalized)
{
$client->responseheaders = array();
$client->responsebodysize = true;
$client->SetResponseContentType("text/html; charset=UTF-8");
}
$client->SetResponseCode($client->appdata["respcode"]);
// Prevent browsers and proxies from doing bad things.
$client->SetResponseNoCache();
$client->AddResponseContent($client->appdata["respcode"] . " " . $client->appdata["respmsg"]);
$client->FinalizeResponse();
}
// Final initialization.
$wsserver = new WebSocketServer();
$origins = array(
"http://" . $args["opts"]["host"] . ":" . (int)$args["opts"]["port"]
);
if (!isset($args["opts"]["sfile"])) $origins[] = "http://localhost:" . (int)$args["opts"]["port"];
$wsserver->SetAllowedOrigins($origins);
$baseenv = ProcessHelper::GetCleanEnvironment();
if (isset($args["opts"]["www"])) $docroot = $args["opts"]["www"];
else $docroot = $rootpath . "/www";
// Prepare various files and directories.
if ($windows)
{
if (isset($args["opts"]["home"]))
{
$path = $args["opts"]["home"];
$pfilespath = $path;
$ufilespath = $path;
}
else
{
if (getenv("ProgramData") !== false) $pfilespath = getenv("ProgramData");
else if (getenv("ALLUSERSPROFILE") !== false) $pfilespath = getenv("ALLUSERSPROFILE");
else WriteStartupInfo(array("success" => false, "error" => "Unable to start server due to missing environment variables. Expected 'ProgramData' or 'ALLUSERSPROFILE'.", "errorcode" => "missing_environment_var"));
if (getenv("LOCALAPPDATA") !== false) $ufilespath = getenv("LOCALAPPDATA");
else if (getenv("APPDATA") !== false) $ufilespath = getenv("APPDATA");
else WriteStartupInfo(array("success" => false, "error" => "Unable to start server due to missing environment variables. Expected 'LOCALAPPDATA' or 'APPDATA'.", "errorcode" => "missing_environment_var"));
}
}
else
{
if (isset($args["opts"]["home"]))
{
$path = $args["opts"]["home"];
$path = rtrim($path, "\\/");
}
else if (function_exists("posix_geteuid") && posix_geteuid() == 0)
{
$path = "/root";
}
else
{
if (getenv("HOME") === false) WriteStartupInfo(array("success" => false, "error" => "Unable to start server due to missing environment variable. Expected 'HOME'.", "errorcode" => "missing_environment_var"));
$path = getenv("HOME");
$path = rtrim($path, "/");
if (function_exists("posix_geteuid") && fileowner($path . "/") !== posix_geteuid()) WriteStartupInfo(array("success" => false, "error" => "Unable to start server due to mismatched user. The path of the 'HOME' environment variable does not match the effective user ID.", "errorcode" => "mismatched_environment_var"));
}
$pfilespath = $path . "/.config";
$ufilespath = $path . "/.config";
}
$pfilespath = rtrim(str_replace("\\", "/", $pfilespath), "/");
$ufilespath = rtrim(str_replace("\\", "/", $ufilespath), "/");
if (isset($args["opts"]["biz"]))
{
$pfilespath .= "/" . $args["opts"]["biz"];
$ufilespath .= "/" . $args["opts"]["biz"];
}
if (isset($args["opts"]["app"])) $appname = $args["opts"]["app"];
else
{
// When not supplied, attempt to determine the name of the app based on the root path.
// Mac OSX has specific requirements for application structure.
$paths = explode("/", $rootpath);
do
{
$appname = array_pop($paths);
if (substr($appname, -4) === ".app") $appname = substr($appname, 0, -4);
} while (($appname === "" || $appname === "MacOS" || $appname === "Contents") && count($paths));
if ($appname === "") $appname = "php-app-server";
}
@cli_set_process_title((isset($args["opts"]["biz"]) ? $args["opts"]["biz"] . " " : "") . $appname);
$pfilespath .= "/" . $appname;
$ufilespath .= "/" . $appname;
@mkdir($pfilespath . "/logs", 0770, true);
@mkdir($ufilespath . "/www", 0770, true);
$baseenv["DOCUMENT_ROOT_USER"] = $ufilespath . "/www";
$baseenv["PAS_PROG_FILES"] = $pfilespath;
$baseenv["PAS_USER_FILES"] = $ufilespath;
$baseenv["PAS_ROOT"] = $rootpath;
$rng = new CSPRNG();
$baseenv["PAS_SECRET"] = $rng->GenerateToken();
if (file_exists($pfilespath . "/logs/access.log") && filesize($pfilespath . "/logs/access.log") > 10000000) @unlink($pfilespath . "/logs/access.log");
$accessfp = fopen($pfilespath . "/logs/access.log", "ab");
if (file_exists($pfilespath . "/logs/error.log") && filesize($pfilespath . "/logs/error.log") > 100000) @unlink($pfilespath . "/logs/error.log");
$errorfp = fopen($pfilespath . "/logs/error.log", "ab");
// Record the start time of this application.
$info = array(
"progfiles" => $pfilespath,
"userfiles" => $ufilespath,
"args" => $args
);
WriteErrorLog(__FILE__ . ":" . __LINE__, "", "STARTUP_INFO", $info);
foreach ($serverexts as $serverext)
{
$serverext->ServerReady();
}
// Write out the initial response line.
WriteStartupInfo($initresult);
echo "Server URL: " . $initresult["url"] . "\n";
echo "Ready.\n";
$cgis = array();
$fcgis = array();
$lastclient = microtime(true);
$running = true;
do
{
// Implement the stream_select() call directly since multiple server instances are involved.
$timeout = 3;
$readfps = array();
$writefps = array();
$exceptfps = NULL;
$webserver->UpdateStreamsAndTimeout("", $timeout, $readfps, $writefps);
foreach ($serverexts as $ext) $ext->UpdateStreamsAndTimeout("", $timeout, $readfps, $writefps);
$wsserver->UpdateStreamsAndTimeout("", $timeout, $readfps, $writefps);
// Add CGI handles.
foreach ($cgis as $id => $val)
{
$client = $webserver->GetClient($id);
if ($client === false || $client->appdata === false || $client->appdata["cgi"] === false)
{
unset($cgis[$id]);
continue;
}
if ($client->appdata["cgi"]["stdin"] !== "") $writefps["cgi_in_" . $id] = $client->appdata["cgi"]["pipes"][0];
if (isset($client->appdata["cgi"]["pipes"][1]) && strlen($client->writedata) + strlen($client->appdata["cgi"]["stdout"]) < 262144) $readfps["cgi_out_" . $id] = $client->appdata["cgi"]["pipes"][1];
if (isset($client->appdata["cgi"]["pipes"][2])) $readfps["cgi_err_" . $id] = $client->appdata["cgi"]["pipes"][2];
}
// Add FastCGI handles.
foreach ($fcgis as $id => $val)
{
$client = $webserver->GetClient($id);
if ($client === false || $client->appdata === false || $client->appdata["fcgi"] === false)
{
unset($fcgis[$id]);
continue;
}
if ($client->appdata["fcgi"]["conn"]->NeedsWrite()) $writefps["fcgi_send_" . $id] = $client->appdata["fcgi"]["fp"];
$request = $client->appdata["fcgi"]["request"];
if (($request->stdoutopen || $request->stderropen) && strlen($client->writedata) + strlen($request->stdout) < 262144) $readfps["fcgi_recv_" . $id] = $client->appdata["fcgi"]["fp"];
}
$result = @stream_select($readfps, $writefps, $exceptfps, $timeout);
if ($result === false) break;
$result = $webserver->Wait(0);
// Always add CGI clients.
foreach ($cgis as $id => $val)
{
$client = $webserver->GetClient($id);
if ($client !== false && $client->appdata !== false && $client->appdata["cgi"] !== false) $result["clients"][$id] = $client;
}
// Always add FastCGI clients.
foreach ($fcgis as $id => $val)
{
$client = $webserver->GetClient($id);
if ($client !== false && $client->appdata !== false && $client->appdata["fcgi"] !== false) $result["clients"][$id] = $client;
}
// Handle active clients.
foreach ($result["clients"] as $id => $client)
{
if ($client->appdata === false)
{
echo "Client ID " . $id . " connected.\n";
$client->appdata = InitClientAppData();
}
if ($client->appdata["url"] === false)
{
// Parse the incoming URL.
$client->appdata["url"] = HTTP::ExtractURL($client->url);
$path = explode("/", $client->appdata["url"]["path"]);
$path2 = array("");
foreach ($path as $part)
{
$part = trim($part, " \t\n\r\0\x0B.");
if ($part !== "") $path2[] = $part;
}
$client->appdata["path"] = implode("/", $path2);
if (substr($client->appdata["url"]["path"], -1) === "/") $client->appdata["path"] .= "/";
// See if any server extensions want to handle the request.
$client->appdata["currext"] = false;
foreach ($serverexts as $name => $ext)
{
if ($ext->CanHandleRequest($client->request["method"], $client->appdata["url"], $client->appdata["path"], $client))
{
$client->appdata["currext"] = $name;
break;
}
}
// Attempt to find a file.
$options = $client->GetHTTPOptions();
if ($client->appdata["currext"] === false)
{
clearstatcache();
$found = false;
$extra = "";
if (is_file($docroot . $client->appdata["path"])) $found = $client->appdata["path"];
else if (substr($client->appdata["path"], -4) !== ".php" && is_file($ufilespath . "/www" . $client->appdata["path"])) $found = $client->appdata["path"];
else
{
$path = $client->appdata["path"];
if (substr($path, -1) !== "/") $path .= "/";
if (is_file($docroot . $path . "index.html")) $found = $path . "index.html";
else
{
// Find a parent PHP file.
while ($path !== "" && !$found)
{
if (is_file($docroot . $path . "index.php")) $found = $path . "index.php";
else if ($path !== "/" && is_file($docroot . substr($path, 0, -1) . ".php")) $found = substr($path, 0, -1) . ".php";
else
{
$pos = ($path !== "/" ? strrpos($path, "/", -2) : false);
if ($pos === false)
{
$extra = "";
$path = "";
}
else
{
$extra = substr($path, $pos + 1) . $extra;
$path = substr($path, 0, $pos + 1);
}
}
}
}
}
if ($found === false)
{
$client->appdata["respcode"] = 404;
$client->appdata["respmsg"] = "File Not Found";
}
else
{
//echo $found . "\n";
if ($extra !== "") $extra = "/" . $extra;
if (substr($found, -4) !== ".php") $client->appdata["file"] = array("name" => (is_file($docroot . $found) ? $docroot : $ufilespath) . $found);
else
{
// Start a CGI process or connect to FastCGI before retrieving any additional data from the client.
// CGI is preferred over FastCGI for a number of reasons. For faster performance, use an extension.
$env = $baseenv;
$env["SERVER_SOFTWARE"] = "PHP App Server/1.0";
$env["SERVER_NAME"] = $args["opts"]["host"];
$env["SERVER_ADDR"] = $args["opts"]["host"];
$env["SERVER_ADMIN"] = "admin@localhost";
$env["GATEWAY_INTERFACE"] = "CGI/1.1";
$env["SERVER_PROTOCOL"] = $client->request["httpver"];
$env["SERVER_PORT"] = $args["opts"]["port"];
$env["REQUEST_METHOD"] = $client->request["method"];
$env["DOCUMENT_ROOT"] = $docroot;
$env["PATH_INFO"] = $extra;
$env["PATH_TRANSLATED"] = $docroot . $client->appdata["path"];
$env["QUERY_STRING"] = $client->appdata["url"]["query"];
if (isset($client->headers["Content-Length"])) $env["CONTENT_LENGTH"] = $client->headers["Content-Length"];
if (isset($client->headers["Content-Type"])) $env["CONTENT_TYPE"] = $client->headers["Content-Type"];
$pos = strrpos($client->ipaddr, ":");
if ($pos === false) $pos = strlen($client->ipaddr);
$env["REMOTE_ADDR"] = (string)substr($client->ipaddr, 0, $pos);
$env["REMOTE_PORT"] = (string)substr($client->ipaddr, $pos + 1);
$env["REQUEST_URI"] = $client->request["path"];
$env["SCRIPT_FILENAME"] = $docroot . $found;
$env["SCRIPT_NAME"] = $found;
// Required environment variable for PHP CGI to function.
$env["REDIRECT_STATUS"] = "200";
foreach ($client->headers as $key => $val)
{
$env["HTTP_" . preg_replace('/[^A-Z0-9]/', "_", strtoupper($key))] = $val;
}
//var_dump($client);
//var_dump($docroot);
//var_dump($client->appdata);
//var_dump($env);
//exit();
if ($cgibin !== false)
{
// Start the process. Note that this is a blocking operation.
// On Windows, an intermediate process is used to enable non-blocking transfer of data to and from the process.
$options2 = array(
"stdin" => (!$client->requestcomplete),
"dir" => $docroot,
"env" => $env
);
if (isset($args["opts"]["user"])) $options2["user"] = $args["opts"]["user"];
if (isset($args["opts"]["group"])) $options2["group"] = $args["opts"]["group"];
$result2 = ProcessHelper::StartProcess($cgibin, $options2);
if (!$result2["success"])
{
$client->appdata["respcode"] = 500;
$client->appdata["respmsg"] = "Internal Server Error<br><br>See log file for details.";
WriteErrorLog("500 Internal Server Error - ProcessHelper::StartProcess()", $client->ipaddr, $client->request, $result2);
}
else
{
// Successfully started the CGI process.
$result2["stdin"] = "";
$result2["start"] = microtime(true);
$result2["stdinbytes"] = 0;
$result2["headersdone"] = false;
$result2["headerssize"] = 0;
$result2["stdout"] = "";
$result2["stderr"] = "";
$client->appdata["cgi"] = $result2;
// Switch the body read callback to a local callback to route any additional incoming data to the CGI handler.
// There is an extra call to the original callback when urlencoded form data comes in but the callback does nothing.
$options["read_body_callback"] = "ProcessClientCGIRequestBody";
$cgis[$id] = true;
}
}
else
{
// Initiate a FastCGI connection. Note that the connect call is a blocking operation.
// Use the previously retrieved FastCGI limits to initialize the new FastCGI instance.
$fcgi = new FastCGI();
$fcgi->SetConnectionLimit($fcgilimits["connection"]);
$fcgi->SetConncurrencyLimit($fcgilimits["concurrency"]);
$fcgi->SetMultiplex($fcgilimits["multiplex"]);
$cmd = "Connect";
$result2 = $fcgi->Connect("unix://" . $fpmdir . "/php-fpm.sock");
// Initialize the request. Requests connection termination at the end of the request.
if ($result2["success"])
{
$cmd = "BeginRequest";
$result2 = $fcgi->BeginRequest(FastCGI::ROLE_RESPONDER, false);
}
// Send params.
if ($result2["success"])
{
$requestid = $result2["id"];
$request = $result2["request"];
$cmd = "SendParams";
$result2 = $fcgi->SendParams($requestid, $env);
}
// Finalize params.
if ($result2["success"]) $result2 = $fcgi->SendParams($requestid, array());
// Finalize stdin if the request is already finished.
if ($result2["success"] && $client->requestcomplete)
{
$cmd = "SendStdin";
$result2 = $fcgi->SendStdin($requestid, "");
}
if ($result2["success"])
{
// Successfully initialized the FastCGI process.
$client->appdata["fcgi"] = array(
"conn" => $fcgi,
"fp" => $fcgi->GetStream(),
"request" => $request,
"start" => microtime(true),
"startbytes" => $fcgi->GetRawSendSize(),
"headersdone" => false,
"headerssize" => 0,
);
// Switch the body read callback to a local callback to route any additional incoming data to the FastCGI handler.
// There is an extra call to the original callback when urlencoded form data comes in but the callback does nothing.
$options["read_body_callback"] = "ProcessClientFastCGIRequestBody";
$fcgis[$id] = true;
}
else
{
$client->appdata["respcode"] = 500;
$client->appdata["respmsg"] = "Internal Server Error<br><br>See log file for details.";
WriteErrorLog("500 Internal Server Error - FastCGI::" . $cmd . "()", $client->ipaddr, $client->request, $result2);
}
}
}
}
}
// Remove the receive size limit for PHP app server. This doesn't eliminate PHP's file upload limits.
unset($options["recvlimit"]);
$client->SetHTTPOptions($options);
}
if ($client->requestcomplete)
{
if ($client->appdata["currext"] !== false)
{
// Let the server extension handle the request.
if ($client->mode === "init_response")
{
// Handle WebSocket upgrade requests.
$id2 = $wsserver->ProcessWebServerClientUpgrade($webserver, $client);
if ($id2 !== false)
{
echo "Client ID " . $id . " upgraded to WebSocket. WebSocket client ID is " . $id2 . ".\n";
// Log the upgrade to WebSocket.
$stats = array(
"rawrecv" => $client->httpstate["result"]["rawrecvsize"],
"rawrecvhead" => $client->httpstate["result"]["rawrecvheadersize"],
"rawsend" => 0,
"rawsendhead" => 0,
);
$info = array(
"ext" => $client->appdata["currext"],
"handler" => "websocket_upgrade",
"code" => 101,
"msg" => "Switching Protocols",
"ws_id" => $id2
);
WriteAccessLog("WebServer:" . $id, $client->ipaddr, $client->request, $stats, $info);
}
else
{
// Attempt to normalize input.
if ($client->contenthandled) $data = $client->requestvars;
else if (!is_object($client->readdata)) $data = @json_decode($client->readdata, true);
else
{
$client->readdata->Open();
$data = @json_decode($client->readdata->Read(1000000), true);
$client->readdata->Close();
}
// Process the request.
if (!is_array($data))
{
$result2 = array("success" => false, "error" => "Data sent was not able to be decoded.", "errorcode" => "invalid_data");
WriteErrorLog("400 Bad Request - Invalid data", $client->ipaddr, $client->request, $result2);
$client->SetResponseCode(400);
// Prevent browsers and proxies from doing bad things.
$client->SetResponseNoCache();
$client->SetResponseContentType("application/json");
$client->AddResponseContent(json_encode($result2));
$client->FinalizeResponse();
}
else
{
if ($client->appdata["auth"] === false)
{
// Parse the Authorization header, if any.
if (isset($client->headers["Authorization"]))
{
$pos = strpos($client->headers["Authorization"], " ");
if ($pos !== false && strtolower(substr($client->headers["Authorization"], 0, $pos)) === "basic")
{
$auth = explode(":", base64_decode(trim(substr($client->headers["Authorization"], $pos + 1))));
if (count($auth) == 2)
{
$data["authuser"] = urldecode($auth[0]);
$data["authtoken"] = urldecode($auth[1]);
}
}
}
if (!$serverexts[$client->appdata["currext"]]->RequireAuthToken() || (isset($data["authuser"]) && isset($data["authtoken"]) && Str::CTstrcmp(hash_hmac("sha256", $client->appdata["path"], $baseenv["PAS_SECRET"]), $data["authtoken"]) == 0))
{
$client->appdata["auth"] = (isset($data["authuser"]) && is_string($data["authuser"]) && $data["authuser"] !== "" ? $data["authuser"] : true);
unset($data["authuser"]);
unset($data["authtoken"]);
}
else
{
if (!isset($data["authtoken"])) $result2 = array("success" => false, "error" => "Missing auth token.", "errorcode" => "missing_authtoken");
else $result2 = array("success" => false, "error" => "Invalid auth token.", "errorcode" => "invalid_authtoken");
WriteErrorLog("403 Forbidden - Auth user/token", $client->ipaddr, $client->request, $result2);
$client->SetResponseCode(403);
// Prevent browsers and proxies from doing bad things.
$client->SetResponseNoCache();
$client->SetResponseContentType("application/json");
$client->AddResponseContent(json_encode($result2));
$client->FinalizeResponse();
}
}
if ($client->appdata["auth"] !== false)
{
$result2 = $serverexts[$client->appdata["currext"]]->ProcessRequest($client->request["method"], $client->appdata["path"], $client, $data);
if ($result2 === false)
{
$webserver->RemoveClient($id);
echo "Client ID " . $id . " removed.\n";
unset($client->appdata);
}
else if (!$client->responsefinalized)
{
$client->appdata["data"] = $data;
}
}
}
}
}