|
|
|
|
Impressum httpd.sys.mjs
Interaktion und
Portierbarkeitunbekannt
|
|
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* An implementation of an HTTP server both as a loadable script and as an XPCOM
* component. See the accompanying README file for user documentation on
* httpd.js.
*/
/* eslint-disable no-shadow */
const CC = Components.Constructor;
const PR_UINT32_MAX = Math.pow(2, 32) - 1;
/** True if debugging output is enabled, false otherwise. */
var DEBUG = false; // non-const *only* so tweakable in server tests
/** True if debugging output should be timestamped. */
var DEBUG_TIMESTAMP = false; // non-const so tweakable in server tests
/**
* Sets the debugging status, intended for tweaking in server tests.
*
* @param {boolean} debug
* Enables debugging output
* @param {boolean} debugTimestamp
* Enables timestamping of the debugging output.
*/
export function setDebuggingStatus(debug, debugTimestamp) {
DEBUG = debug;
DEBUG_TIMESTAMP = debugTimestamp;
}
import { AppConstants } from "resource://gre/modules/AppConstants.sys.mjs";
/**
* Asserts that the given condition holds. If it doesn't, the given message is
* dumped, a stack trace is printed, and an exception is thrown to attempt to
* stop execution (which unfortunately must rely upon the exception not being
* accidentally swallowed by the code that uses it).
*/
function NS_ASSERT(cond, msg) {
if (DEBUG && !cond) {
dumpn("###!!!");
dumpn("###!!! ASSERTION" + (msg ? ": " + msg : "!"));
dumpn("###!!! Stack follows:");
var stack = new Error().stack.split(/\n/);
dumpn(
stack
.map(function (val) {
return "###!!! " + val;
})
.join("\n")
);
throw Components.Exception("", Cr.NS_ERROR_ABORT);
}
}
/** Constructs an HTTP error object. */
export function HttpError(code, description) {
this.code = code;
this.description = description;
}
HttpError.prototype = {
toString() {
return this.code + " " + this.description;
},
};
/**
* Errors thrown to trigger specific HTTP server responses.
*/
export var HTTP_400 = new HttpError(400, "Bad Request");
export var HTTP_401 = new HttpError(401, "Unauthorized");
export var HTTP_402 = new HttpError(402, "Payment Required");
export var HTTP_403 = new HttpError(403, "Forbidden");
export var HTTP_404 = new HttpError(404, "Not Found");
export var HTTP_405 = new HttpError(405, "Method Not Allowed");
export var HTTP_406 = new HttpError(406, "Not Acceptable");
export var HTTP_407 = new HttpError(407, "Proxy Authentication Required");
export var HTTP_408 = new HttpError(408, "Request Timeout");
export var HTTP_409 = new HttpError(409, "Conflict");
export var HTTP_410 = new HttpError(410, "Gone");
export var HTTP_411 = new HttpError(411, "Length Required");
export var HTTP_412 = new HttpError(412, "Precondition Failed");
export var HTTP_413 = new HttpError(413, "Request Entity Too Large");
export var HTTP_414 = new HttpError(414, "Request-URI Too Long");
export var HTTP_415 = new HttpError(415, "Unsupported Media Type");
export var HTTP_417 = new HttpError(417, "Expectation Failed");
export var HTTP_500 = new HttpError(500, "Internal Server Error");
export var HTTP_501 = new HttpError(501, "Not Implemented");
export var HTTP_502 = new HttpError(502, "Bad Gateway");
export var HTTP_503 = new HttpError(503, "Service Unavailable");
export var HTTP_504 = new HttpError(504, "Gateway Timeout");
export var HTTP_505 = new HttpError(505, "HTTP Version Not Supported");
/** Creates a hash with fields corresponding to the values in arr. */
function array2obj(arr) {
var obj = {};
for (var i = 0; i < arr.length; i++) {
obj[arr[i]] = arr[i];
}
return obj;
}
/** Returns an array of the integers x through y, inclusive. */
function range(x, y) {
var arr = [];
for (var i = x; i <= y; i++) {
arr.push(i);
}
return arr;
}
/** An object (hash) whose fields are the numbers of all HTTP error codes. */
const HTTP_ERROR_CODES = array2obj(range(400, 417).concat(range(500, 505)));
/**
* The character used to distinguish hidden files from non-hidden files, a la
* the leading dot in Apache. Since that mechanism also hides files from
* easy display in LXR, ls output, etc. however, we choose instead to use a
* suffix character. If a requested file ends with it, we append another
* when getting the file on the server. If it doesn't, we just look up that
* file. Therefore, any file whose name ends with exactly one of the character
* is "hidden" and available for use by the server.
*/
const HIDDEN_CHAR = "^";
/**
* The file name suffix indicating the file containing overridden headers for
* a requested file.
*/
const HEADERS_SUFFIX = HIDDEN_CHAR + "headers" + HIDDEN_CHAR;
const INFORMATIONAL_RESPONSE_SUFFIX =
HIDDEN_CHAR + "informationalResponse" + HIDDEN_CHAR;
/** Type used to denote SJS scripts for CGI-like functionality. */
const SJS_TYPE = "sjs";
/** Base for relative timestamps produced by dumpn(). */
var firstStamp = 0;
/** dump(str) with a trailing "\n" -- only outputs if DEBUG. */
export function dumpn(str) {
if (DEBUG) {
var prefix = "HTTPD-INFO | ";
if (DEBUG_TIMESTAMP) {
if (firstStamp === 0) {
firstStamp = Date.now();
}
var elapsed = Date.now() - firstStamp; // milliseconds
var min = Math.floor(elapsed / 60000);
var sec = (elapsed % 60000) / 1000;
if (sec < 10) {
prefix += min + ":0" + sec.toFixed(3) + " | ";
} else {
prefix += min + ":" + sec.toFixed(3) + " | ";
}
}
dump(prefix + str + "\n");
}
}
/** Dumps the current JS stack if DEBUG. */
function dumpStack() {
// peel off the frames for dumpStack() and Error()
var stack = new Error().stack.split(/\n/).slice(2);
stack.forEach(dumpn);
}
/**
* JavaScript constructors for commonly-used classes; precreating these is a
* speedup over doing the same from base principles. See the docs at
* http://developer.mozilla.org/en/docs/Components.Constructor for details.
*/
const ServerSocket = CC(
"@mozilla.org/network/server-socket;1",
"nsIServerSocket",
"init"
);
const ServerSocketIPv6 = CC(
"@mozilla.org/network/server-socket;1",
"nsIServerSocket",
"initIPv6"
);
const ServerSocketDualStack = CC(
"@mozilla.org/network/server-socket;1",
"nsIServerSocket",
"initDualStack"
);
const ScriptableInputStream = CC(
"@mozilla.org/scriptableinputstream;1",
"nsIScriptableInputStream",
"init"
);
const Pipe = CC("@mozilla.org/pipe;1", "nsIPipe", "init");
const FileInputStream = CC(
"@mozilla.org/network/file-input-stream;1",
"nsIFileInputStream",
"init"
);
const ConverterInputStream = CC(
"@mozilla.org/intl/converter-input-stream;1",
"nsIConverterInputStream",
"init"
);
const WritablePropertyBag = CC(
"@mozilla.org/hash-property-bag;1",
"nsIWritablePropertyBag2"
);
const SupportsString = CC(
"@mozilla.org/supports-string;1",
"nsISupportsString"
);
/* These two are non-const only so a test can overwrite them. */
var BinaryInputStream = CC(
"@mozilla.org/binaryinputstream;1",
"nsIBinaryInputStream",
"setInputStream"
);
var BinaryOutputStream = CC(
"@mozilla.org/binaryoutputstream;1",
"nsIBinaryOutputStream",
"setOutputStream"
);
export function overrideBinaryStreamsForTests(
inputStream,
outputStream,
responseSegmentSize
) {
BinaryInputStream = inputStream;
BinaryOutputStream = outputStream;
Response.SEGMENT_SIZE = responseSegmentSize;
}
/**
* Returns the RFC 822/1123 representation of a date.
*
* @param date : Number
* the date, in milliseconds from midnight (00:00:00), January 1, 1970 GMT
* @returns string
* the representation of the given date
*/
function toDateString(date) {
//
// rfc1123-date = wkday "," SP date1 SP time SP "GMT"
// date1 = 2DIGIT SP month SP 4DIGIT
// ; day month year (e.g., 02 Jun 1982)
// time = 2DIGIT ":" 2DIGIT ":" 2DIGIT
// ; 00:00:00 - 23:59:59
// wkday = "Mon" | "Tue" | "Wed"
// | "Thu" | "Fri" | "Sat" | "Sun"
// month = "Jan" | "Feb" | "Mar" | "Apr"
// | "May" | "Jun" | "Jul" | "Aug"
// | "Sep" | "Oct" | "Nov" | "Dec"
//
const wkdayStrings = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
const monthStrings = [
"Jan",
"Feb",
"Mar",
"Apr",
"May",
"Jun",
"Jul",
"Aug",
"Sep",
"Oct",
"Nov",
"Dec",
];
/**
* Processes a date and returns the encoded UTC time as a string according to
* the format specified in RFC 2616.
*
* @param date : Date
* the date to process
* @returns string
* a string of the form "HH:MM:SS", ranging from "00:00:00" to "23:59:59"
*/
function toTime(date) {
var hrs = date.getUTCHours();
var rv = hrs < 10 ? "0" + hrs : hrs;
var mins = date.getUTCMinutes();
rv += ":";
rv += mins < 10 ? "0" + mins : mins;
var secs = date.getUTCSeconds();
rv += ":";
rv += secs < 10 ? "0" + secs : secs;
return rv;
}
/**
* Processes a date and returns the encoded UTC date as a string according to
* the date1 format specified in RFC 2616.
*
* @param date : Date
* the date to process
* @returns string
* a string of the form "HH:MM:SS", ranging from "00:00:00" to "23:59:59"
*/
function toDate1(date) {
var day = date.getUTCDate();
var month = date.getUTCMonth();
var year = date.getUTCFullYear();
var rv = day < 10 ? "0" + day : day;
rv += " " + monthStrings[month];
rv += " " + year;
return rv;
}
date = new Date(date);
const fmtString = "%wkday%, %date1% %time% GMT";
var rv = fmtString.replace("%wkday%", wkdayStrings[date.getUTCDay()]);
rv = rv.replace("%time%", toTime(date));
return rv.replace("%date1%", toDate1(date));
}
/**
* Instantiates a new HTTP server.
*/
export function nsHttpServer() {
/** The port on which this server listens. */
this._port = undefined;
/** The socket associated with this. */
this._socket = null;
/** The handler used to process requests to this server. */
this._handler = new ServerHandler(this);
/** Naming information for this server. */
this._identity = new ServerIdentity();
/**
* Indicates when the server is to be shut down at the end of the request.
*/
this._doQuit = false;
/**
* True if the socket in this is closed (and closure notifications have been
* sent and processed if the socket was ever opened), false otherwise.
*/
this._socketClosed = true;
/**
* Used for tracking existing connections and ensuring that all connections
* are properly cleaned up before server shutdown; increases by 1 for every
* new incoming connection.
*/
this._connectionGen = 0;
/**
* Hash of all open connections, indexed by connection number at time of
* creation.
*/
this._connections = {};
}
nsHttpServer.prototype = {
// NSISERVERSOCKETLISTENER
/**
* Processes an incoming request coming in on the given socket and contained
* in the given transport.
*
* @param socket : nsIServerSocket
* the socket through which the request was served
* @param trans : nsISocketTransport
* the transport for the request/response
* @see nsIServerSocketListener.onSocketAccepted
*/
onSocketAccepted(socket, trans) {
dumpn("*** onSocketAccepted(socket=" + socket + ", trans=" + trans + ")");
dumpn(">>> new connection on " + trans.host + ":" + trans.port);
const SEGMENT_SIZE = 8192;
const SEGMENT_COUNT = 1024;
try {
var input = trans
.openInputStream(0, SEGMENT_SIZE, SEGMENT_COUNT)
.QueryInterface(Ci.nsIAsyncInputStream);
var output = trans.openOutputStream(0, 0, 0);
} catch (e) {
dumpn("*** error opening transport streams: " + e);
trans.close(Cr.NS_BINDING_ABORTED);
return;
}
var connectionNumber = ++this._connectionGen;
try {
var conn = new Connection(
input,
output,
this,
socket.port,
trans.port,
connectionNumber,
trans
);
var reader = new RequestReader(conn);
// XXX add request timeout functionality here!
// Note: must use main thread here, or we might get a GC that will cause
// threadsafety assertions. We really need to fix XPConnect so that
// you can actually do things in multi-threaded JS. :-(
input.asyncWait(reader, 0, 0, Services.tm.mainThread);
} catch (e) {
// Assume this connection can't be salvaged and bail on it completely;
// don't attempt to close it so that we can assert that any connection
// being closed is in this._connections.
dumpn("*** error in initial request-processing stages: " + e);
trans.close(Cr.NS_BINDING_ABORTED);
return;
}
this._connections[connectionNumber] = conn;
dumpn("*** starting connection " + connectionNumber);
},
/**
* Called when the socket associated with this is closed.
*
* @param socket : nsIServerSocket
* the socket being closed
* @param status : nsresult
* the reason the socket stopped listening (NS_BINDING_ABORTED if the server
* was stopped using nsIHttpServer.stop)
* @see nsIServerSocketListener.onStopListening
*/
onStopListening(socket) {
dumpn(">>> shutting down server on port " + socket.port);
for (var n in this._connections) {
if (!this._connections[n]._requestStarted) {
this._connections[n].close();
}
}
this._socketClosed = true;
if (this._hasOpenConnections()) {
dumpn("*** open connections!!!");
}
if (!this._hasOpenConnections()) {
dumpn("*** no open connections, notifying async from onStopListening");
// Notify asynchronously so that any pending teardown in stop() has a
// chance to run first.
var self = this;
var stopEvent = {
run() {
dumpn("*** _notifyStopped async callback");
self._notifyStopped();
},
};
Services.tm.currentThread.dispatch(
stopEvent,
Ci.nsIThread.DISPATCH_NORMAL
);
}
},
// NSIHTTPSERVER
//
// see nsIHttpServer.start
//
start(port) {
this._start(port, "localhost");
},
//
// see nsIHttpServer.start_ipv6
//
start_ipv6(port) {
this._start(port, "[::1]");
},
start_dualStack(port) {
this._start(port, "[::1]", true);
},
_start(port, host, dualStack) {
if (this._socket) {
throw Components.Exception("", Cr.NS_ERROR_ALREADY_INITIALIZED);
}
this._port = port;
this._doQuit = this._socketClosed = false;
this._host = host;
// The listen queue needs to be long enough to handle
// network.http.max-persistent-connections-per-server or
// network.http.max-persistent-connections-per-proxy concurrent
// connections, plus a safety margin in case some other process is
// talking to the server as well.
var maxConnections =
5 +
Math.max(
Services.prefs.getIntPref(
"network.http.max-persistent-connections-per-server"
),
Services.prefs.getIntPref(
"network.http.max-persistent-connections-per-proxy"
)
);
try {
var loopback = true;
if (
this._host != "127.0.0.1" &&
this._host != "localhost" &&
this._host != "[::1]"
) {
loopback = false;
}
// When automatically selecting a port, sometimes the chosen port is
// "blocked" from clients. We don't want to use these ports because
// tests will intermittently fail. So, we simply keep trying to to
// get a server socket until a valid port is obtained. We limit
// ourselves to finite attempts just so we don't loop forever.
var socket;
for (var i = 100; i; i--) {
var temp = null;
if (dualStack) {
temp = new ServerSocketDualStack(this._port, maxConnections);
} else if (this._host.includes(":")) {
temp = new ServerSocketIPv6(
this._port,
loopback, // true = localhost, false = everybody
maxConnections
);
} else {
temp = new ServerSocket(
this._port,
loopback, // true = localhost, false = everybody
maxConnections
);
}
var allowed = Services.io.allowPort(temp.port, "http");
if (!allowed) {
dumpn(
">>>Warning: obtained ServerSocket listens on a blocked " +
"port: " +
temp.port
);
}
if (!allowed && this._port == -1) {
dumpn(">>>Throwing away ServerSocket with bad port.");
temp.close();
continue;
}
socket = temp;
break;
}
if (!socket) {
throw new Error(
"No socket server available. Are there no available ports?"
);
}
socket.asyncListen(this);
this._port = socket.port;
this._identity._initialize(socket.port, host, true, dualStack);
this._socket = socket;
dumpn(
">>> listening on port " +
socket.port +
", " +
maxConnections +
" pending connections"
);
} catch (e) {
dump("\n!!! could not start server on port " + port + ": " + e + "\n\n");
throw Components.Exception("", Cr.NS_ERROR_NOT_AVAILABLE);
}
},
//
// see nsIHttpServer.stop
//
stop(callback) {
if (!this._socket) {
throw Components.Exception("", Cr.NS_ERROR_UNEXPECTED);
}
// If no argument was provided to stop, return a promise.
let returnValue = undefined;
if (!callback) {
returnValue = new Promise(resolve => {
callback = resolve;
});
}
this._stopCallback =
typeof callback === "function"
? callback
: function () {
callback.onStopped();
};
dumpn(">>> stopping listening on port " + this._socket.port);
this._socket.close();
this._socket = null;
// We can't have this identity any more, and the port on which we're running
// this server now could be meaningless the next time around.
this._identity._teardown();
this._doQuit = false;
// socket-close notification and pending request completion happen async
return returnValue;
},
//
// see nsIHttpServer.registerFile
//
registerFile(path, file, handler) {
if (file && (!file.exists() || file.isDirectory())) {
throw Components.Exception("", Cr.NS_ERROR_INVALID_ARG);
}
this._handler.registerFile(path, file, handler);
},
//
// see nsIHttpServer.registerDirectory
//
registerDirectory(path, directory) {
// XXX true path validation!
if (
path.charAt(0) != "/" ||
path.charAt(path.length - 1) != "/" ||
(directory && (!directory.exists() || !directory.isDirectory()))
) {
throw Components.Exception("", Cr.NS_ERROR_INVALID_ARG);
}
// XXX determine behavior of nonexistent /foo/bar when a /foo/bar/ mapping
// exists!
this._handler.registerDirectory(path, directory);
},
//
// see nsIHttpServer.registerPathHandler
//
registerPathHandler(path, handler) {
this._handler.registerPathHandler(path, handler);
},
//
// see nsIHttpServer.registerPrefixHandler
//
registerPrefixHandler(prefix, handler) {
this._handler.registerPrefixHandler(prefix, handler);
},
//
// see nsIHttpServer.registerErrorHandler
//
registerErrorHandler(code, handler) {
this._handler.registerErrorHandler(code, handler);
},
//
// see nsIHttpServer.setIndexHandler
//
setIndexHandler(handler) {
this._handler.setIndexHandler(handler);
},
//
// see nsIHttpServer.registerContentType
//
registerContentType(ext, type) {
this._handler.registerContentType(ext, type);
},
get connectionNumber() {
return this._connectionGen;
},
//
// see nsIHttpServer.serverIdentity
//
get identity() {
return this._identity;
},
//
// see nsIHttpServer.getState
//
getState(path, k) {
return this._handler._getState(path, k);
},
//
// see nsIHttpServer.setState
//
setState(path, k, v) {
return this._handler._setState(path, k, v);
},
//
// see nsIHttpServer.getSharedState
//
getSharedState(k) {
return this._handler._getSharedState(k);
},
//
// see nsIHttpServer.setSharedState
//
setSharedState(k, v) {
return this._handler._setSharedState(k, v);
},
//
// see nsIHttpServer.getObjectState
//
getObjectState(k) {
return this._handler._getObjectState(k);
},
//
// see nsIHttpServer.setObjectState
//
setObjectState(k, v) {
return this._handler._setObjectState(k, v);
},
get wrappedJSObject() {
return this;
},
// NSISUPPORTS
//
// see nsISupports.QueryInterface
//
QueryInterface: ChromeUtils.generateQI([
"nsIHttpServer",
"nsIServerSocketListener",
]),
// NON-XPCOM PUBLIC API
/**
* Returns true iff this server is not running (and is not in the process of
* serving any requests still to be processed when the server was last
* stopped after being run).
*/
isStopped() {
return this._socketClosed && !this._hasOpenConnections();
},
// PRIVATE IMPLEMENTATION
/** True if this server has any open connections to it, false otherwise. */
_hasOpenConnections() {
//
// If we have any open connections, they're tracked as numeric properties on
// |this._connections|. The non-standard __count__ property could be used
// to check whether there are any properties, but standard-wise, even
// looking forward to ES5, there's no less ugly yet still O(1) way to do
// this.
//
for (var n in this._connections) {
return true;
}
return false;
},
/** Calls the server-stopped callback provided when stop() was called. */
_notifyStopped() {
NS_ASSERT(this._stopCallback !== null, "double-notifying?");
NS_ASSERT(!this._hasOpenConnections(), "should be done serving by now");
//
// NB: We have to grab this now, null out the member, *then* call the
// callback here, or otherwise the callback could (indirectly) futz with
// this._stopCallback by starting and immediately stopping this, at
// which point we'd be nulling out a field we no longer have a right to
// modify.
//
var callback = this._stopCallback;
this._stopCallback = null;
try {
callback();
} catch (e) {
// not throwing because this is specified as being usually (but not
// always) asynchronous
dump("!!! error running onStopped callback: " + e + "\n");
}
},
/**
* Notifies this server that the given connection has been closed.
*
* @param connection : Connection
* the connection that was closed
*/
_connectionClosed(connection) {
NS_ASSERT(
connection.number in this._connections,
"closing a connection " +
this +
" that we never added to the " +
"set of open connections?"
);
NS_ASSERT(
this._connections[connection.number] === connection,
"connection number mismatch? " + this._connections[connection.number]
);
delete this._connections[connection.number];
// Fire a pending server-stopped notification if it's our responsibility.
if (!this._hasOpenConnections() && this._socketClosed) {
this._notifyStopped();
}
},
/**
* Requests that the server be shut down when possible.
*/
_requestQuit() {
dumpn(">>> requesting a quit");
dumpStack();
this._doQuit = true;
},
};
export var HttpServer = nsHttpServer;
export class NodeServer {
// Executes command in the context of a node server.
// See handler in moz-http2.js
//
// Example use:
// let id = NodeServer.fork(); // id is a random string
// await NodeServer.execute(id, `"hello"`)
// > "hello"
// await NodeServer.execute(id, `(() => "hello")()`)
// > "hello"
// await NodeServer.execute(id, `(() => var_defined_on_server)()`)
// > "0"
// await NodeServer.execute(id, `var_defined_on_server`)
// > "0"
// function f(param) { if (param) return param; return "bla"; }
// await NodeServer.execute(id, f); // Defines the function on the server
// await NodeServer.execute(id, `f()`) // executes defined function
// > "bla"
// let result = await NodeServer.execute(id, `f("test")`);
// > "test"
// await NodeServer.kill(id); // shuts down the server
// Forks a new node server using moz-http2-child.js as a starting point
static fork() {
return this.sendCommand("", "/fork");
}
// Executes command in the context of the node server indicated by `id`
static execute(id, command) {
return this.sendCommand(command, `/execute/${id}`);
}
// Shuts down the server
static kill(id) {
return this.sendCommand("", `/kill/${id}`);
}
// Issues a request to the node server (handler defined in moz-http2.js)
// This method should not be called directly.
static sendCommand(command, path) {
let h2Port = Services.env.get("MOZNODE_EXEC_PORT");
if (!h2Port) {
throw new Error("Could not find MOZNODE_EXEC_PORT");
}
let req = new XMLHttpRequest();
const serverIP =
AppConstants.platform == "android" ? "10.0.2.2" : "127.0.0.1";
req.open("POST", `http://${serverIP}:${h2Port}${path}`);
req.channel.QueryInterface(Ci.nsIHttpChannelInternal).bypassProxy = true;
// Passing a function to NodeServer.execute will define that function
// in node. It can be called in a later execute command.
let isFunction = function (obj) {
return !!(obj && obj.constructor && obj.call && obj.apply);
};
let payload = command;
if (isFunction(command)) {
payload = `${command.name} = ${command.toString()};`;
}
return new Promise((resolve, reject) => {
req.onload = () => {
let x = null;
if (req.statusText != "OK") {
reject(`XHR request failed: ${req.statusText}`);
return;
}
try {
x = JSON.parse(req.responseText);
} catch (e) {
reject(`Failed to parse ${req.responseText} - ${e}`);
return;
}
if (x.error) {
let e = new Error(x.error, "", 0);
e.stack = x.errorStack;
reject(e);
return;
}
resolve(x.result);
};
req.onerror = e => {
reject(e);
};
req.send(payload.toString());
});
}
}
//
// RFC 2396 section 3.2.2:
//
// host = hostname | IPv4address
// hostname = *( domainlabel "." ) toplabel [ "." ]
// domainlabel = alphanum | alphanum *( alphanum | "-" ) alphanum
// toplabel = alpha | alpha *( alphanum | "-" ) alphanum
// IPv4address = 1*digit "." 1*digit "." 1*digit "." 1*digit
//
// IPv6 addresses are notably lacking in the above definition of 'host'.
// RFC 2732 section 3 extends the host definition:
// host = hostname | IPv4address | IPv6reference
// ipv6reference = "[" IPv6address "]"
//
// RFC 3986 supersedes RFC 2732 and offers a more precise definition of a IPv6
// address. For simplicity, the regexp below captures all canonical IPv6
// addresses (e.g. [::1]), but may also match valid non-canonical IPv6 addresses
// (e.g. [::127.0.0.1]) and even invalid bracketed addresses ([::], [99999::]).
const HOST_REGEX = new RegExp(
"^(?:" +
// *( domainlabel "." )
"(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)*" +
// toplabel [ "." ]
"[a-z](?:[a-z0-9-]*[a-z0-9])?\\.?" +
"|" +
// IPv4 address
"\\d+\\.\\d+\\.\\d+\\.\\d+" +
"|" +
// IPv6 addresses (e.g. [::1])
"\\[[:0-9a-f]+\\]" +
")$",
"i"
);
/**
* Represents the identity of a server. An identity consists of a set of
* (scheme, host, port) tuples denoted as locations (allowing a single server to
* serve multiple sites or to be used behind both HTTP and HTTPS proxies for any
* host/port). Any incoming request must be to one of these locations, or it
* will be rejected with an HTTP 400 error. One location, denoted as the
* primary location, is the location assigned in contexts where a location
* cannot otherwise be endogenously derived, such as for HTTP/1.0 requests.
*
* A single identity may contain at most one location per unique host/port pair;
* other than that, no restrictions are placed upon what locations may
* constitute an identity.
*/
function ServerIdentity() {
/** The scheme of the primary location. */
this._primaryScheme = "http";
/** The hostname of the primary location. */
this._primaryHost = "127.0.0.1";
/** The port number of the primary location. */
this._primaryPort = -1;
/**
* The current port number for the corresponding server, stored so that a new
* primary location can always be set if the current one is removed.
*/
this._defaultPort = -1;
/**
* Maps hosts to maps of ports to schemes, e.g. the following would represent
* https://example.com:789/ and http://example.org/:
*
* {
* "xexample.com": { 789: "https" },
* "xexample.org": { 80: "http" }
* }
*
* Note the "x" prefix on hostnames, which prevents collisions with special
* JS names like "prototype".
*/
this._locations = { xlocalhost: {} };
}
ServerIdentity.prototype = {
// NSIHTTPSERVERIDENTITY
//
// see nsIHttpServerIdentity.primaryScheme
//
get primaryScheme() {
if (this._primaryPort === -1) {
throw Components.Exception("", Cr.NS_ERROR_NOT_INITIALIZED);
}
return this._primaryScheme;
},
//
// see nsIHttpServerIdentity.primaryHost
//
get primaryHost() {
if (this._primaryPort === -1) {
throw Components.Exception("", Cr.NS_ERROR_NOT_INITIALIZED);
}
return this._primaryHost;
},
//
// see nsIHttpServerIdentity.primaryPort
//
get primaryPort() {
if (this._primaryPort === -1) {
throw Components.Exception("", Cr.NS_ERROR_NOT_INITIALIZED);
}
return this._primaryPort;
},
//
// see nsIHttpServerIdentity.add
//
add(scheme, host, port) {
this._validate(scheme, host, port);
var entry = this._locations["x" + host];
if (!entry) {
this._locations["x" + host] = entry = {};
}
entry[port] = scheme;
},
//
// see nsIHttpServerIdentity.remove
//
remove(scheme, host, port) {
this._validate(scheme, host, port);
var entry = this._locations["x" + host];
if (!entry) {
return false;
}
var present = port in entry;
delete entry[port];
if (
this._primaryScheme == scheme &&
this._primaryHost == host &&
this._primaryPort == port &&
this._defaultPort !== -1
) {
// Always keep at least one identity in existence at any time, unless
// we're in the process of shutting down (the last condition above).
this._primaryPort = -1;
this._initialize(this._defaultPort, host, false);
}
return present;
},
//
// see nsIHttpServerIdentity.has
//
has(scheme, host, port) {
this._validate(scheme, host, port);
return (
"x" + host in this._locations &&
scheme === this._locations["x" + host][port]
);
},
//
// see nsIHttpServerIdentity.has
//
getScheme(host, port) {
this._validate("http", host, port);
var entry = this._locations["x" + host];
if (!entry) {
return "";
}
return entry[port] || "";
},
//
// see nsIHttpServerIdentity.setPrimary
//
setPrimary(scheme, host, port) {
this._validate(scheme, host, port);
this.add(scheme, host, port);
this._primaryScheme = scheme;
this._primaryHost = host;
this._primaryPort = port;
},
// NSISUPPORTS
//
// see nsISupports.QueryInterface
//
QueryInterface: ChromeUtils.generateQI(["nsIHttpServerIdentity"]),
// PRIVATE IMPLEMENTATION
/**
* Initializes the primary name for the corresponding server, based on the
* provided port number.
*/
_initialize(port, host, addSecondaryDefault, dualStack) {
this._host = host;
if (this._primaryPort !== -1) {
this.add("http", host, port);
} else {
this.setPrimary("http", "localhost", port);
}
this._defaultPort = port;
// Only add this if we're being called at server startup
if (addSecondaryDefault && host != "127.0.0.1") {
if (host.includes(":")) {
this.add("http", "[::1]", port);
if (dualStack) {
this.add("http", "127.0.0.1", port);
}
} else {
this.add("http", "127.0.0.1", port);
}
}
},
/**
* Called at server shutdown time, unsets the primary location only if it was
* the default-assigned location and removes the default location from the
* set of locations used.
*/
_teardown() {
if (this._host != "127.0.0.1") {
// Not the default primary location, nothing special to do here
this.remove("http", "127.0.0.1", this._defaultPort);
}
// This is a *very* tricky bit of reasoning here; make absolutely sure the
// tests for this code pass before you commit changes to it.
if (
this._primaryScheme == "http" &&
this._primaryHost == this._host &&
this._primaryPort == this._defaultPort
) {
// Make sure we don't trigger the readding logic in .remove(), then remove
// the default location.
var port = this._defaultPort;
this._defaultPort = -1;
this.remove("http", this._host, port);
// Ensure a server start triggers the setPrimary() path in ._initialize()
this._primaryPort = -1;
} else {
// No reason not to remove directly as it's not our primary location
this.remove("http", this._host, this._defaultPort);
}
},
/**
* Ensures scheme, host, and port are all valid with respect to RFC 2396.
*
* @throws NS_ERROR_ILLEGAL_VALUE
* if any argument doesn't match the corresponding production
*/
_validate(scheme, host, port) {
if (scheme !== "http" && scheme !== "https") {
dumpn("*** server only supports http/https schemes: '" + scheme + "'");
dumpStack();
throw Components.Exception("", Cr.NS_ERROR_ILLEGAL_VALUE);
}
if (!HOST_REGEX.test(host)) {
dumpn("*** unexpected host: '" + host + "'");
throw Components.Exception("", Cr.NS_ERROR_ILLEGAL_VALUE);
}
if (port < 0 || port > 65535) {
dumpn("*** unexpected port: '" + port + "'");
throw Components.Exception("", Cr.NS_ERROR_ILLEGAL_VALUE);
}
},
};
/**
* Represents a connection to the server (and possibly in the future the thread
* on which the connection is processed).
*
* @param input : nsIInputStream
* stream from which incoming data on the connection is read
* @param output : nsIOutputStream
* stream to write data out the connection
* @param server : nsHttpServer
* the server handling the connection
* @param port : int
* the port on which the server is running
* @param outgoingPort : int
* the outgoing port used by this connection
* @param number : uint
* a serial number used to uniquely identify this connection
*/
function Connection(
input,
output,
server,
port,
outgoingPort,
number,
transport
) {
dumpn("*** opening new connection " + number + " on port " + outgoingPort);
/** Stream of incoming data. */
this.input = input;
/** Stream for outgoing data. */
this.output = output;
/** The server associated with this request. */
this.server = server;
/** The port on which the server is running. */
this.port = port;
/** The outgoing poort used by this connection. */
this._outgoingPort = outgoingPort;
/** The serial number of this connection. */
this.number = number;
/** Reference to the underlying transport. */
this.transport = transport;
/**
* The request for which a response is being generated, null if the
* incoming request has not been fully received or if it had errors.
*/
this.request = null;
/** This allows a connection to disambiguate between a peer initiating a
* close and the socket being forced closed on shutdown.
*/
this._closed = false;
/** State variable for debugging. */
this._processed = false;
/** whether or not 1st line of request has been received */
this._requestStarted = false;
}
Connection.prototype = {
/** Closes this connection's input/output streams. */
close() {
if (this._closed) {
return;
}
dumpn(
"*** closing connection " + this.number + " on port " + this._outgoingPort
);
this.input.close();
this.output.close();
this._closed = true;
var server = this.server;
server._connectionClosed(this);
// If an error triggered a server shutdown, act on it now
if (server._doQuit) {
server.stop(function () {
/* not like we can do anything better */
});
}
},
/**
* Initiates processing of this connection, using the data in the given
* request.
*
* @param request : Request
* the request which should be processed
*/
process(request) {
NS_ASSERT(!this._closed && !this._processed);
this._processed = true;
this.request = request;
this.server._handler.handleResponse(this);
},
/**
* Initiates processing of this connection, generating a response with the
* given HTTP error code.
*
* @param code : uint
* an HTTP code, so in the range [0, 1000)
* @param request : Request
* incomplete data about the incoming request (since there were errors
* during its processing
*/
processError(code, request) {
NS_ASSERT(!this._closed && !this._processed);
this._processed = true;
this.request = request;
this.server._handler.handleError(code, this);
},
/** Converts this to a string for debugging purposes. */
toString() {
return (
"<Connection(" +
this.number +
(this.request ? ", " + this.request.path : "") +
"): " +
(this._closed ? "closed" : "open") +
">"
);
},
requestStarted() {
this._requestStarted = true;
},
};
/** Returns an array of count bytes from the given input stream. */
function readBytes(inputStream, count) {
return new BinaryInputStream(inputStream).readByteArray(count);
}
/** Request reader processing states; see RequestReader for details. */
const READER_IN_REQUEST_LINE = 0;
const READER_IN_HEADERS = 1;
const READER_IN_BODY = 2;
const READER_FINISHED = 3;
/**
* Reads incoming request data asynchronously, does any necessary preprocessing,
* and forwards it to the request handler. Processing occurs in three states:
*
* READER_IN_REQUEST_LINE Reading the request's status line
* READER_IN_HEADERS Reading headers in the request
* READER_IN_BODY Reading the body of the request
* READER_FINISHED Entire request has been read and processed
*
* During the first two stages, initial metadata about the request is gathered
* into a Request object. Once the status line and headers have been processed,
* we start processing the body of the request into the Request. Finally, when
* the entire body has been read, we create a Response and hand it off to the
* ServerHandler to be given to the appropriate request handler.
*
* @param connection : Connection
* the connection for the request being read
*/
function RequestReader(connection) {
/** Connection metadata for this request. */
this._connection = connection;
/**
* A container providing line-by-line access to the raw bytes that make up the
* data which has been read from the connection but has not yet been acted
* upon (by passing it to the request handler or by extracting request
* metadata from it).
*/
this._data = new LineData();
/**
* The amount of data remaining to be read from the body of this request.
* After all headers in the request have been read this is the value in the
* Content-Length header, but as the body is read its value decreases to zero.
*/
this._contentLength = 0;
/** The current state of parsing the incoming request. */
this._state = READER_IN_REQUEST_LINE;
/** Metadata constructed from the incoming request for the request handler. */
this._metadata = new Request(connection.port);
/**
* Used to preserve state if we run out of line data midway through a
* multi-line header. _lastHeaderName stores the name of the header, while
* _lastHeaderValue stores the value we've seen so far for the header.
*
* These fields are always either both undefined or both strings.
*/
this._lastHeaderName = this._lastHeaderValue = undefined;
}
RequestReader.prototype = {
// NSIINPUTSTREAMCALLBACK
/**
* Called when more data from the incoming request is available. This method
* then reads the available data from input and deals with that data as
* necessary, depending upon the syntax of already-downloaded data.
*
* @param input : nsIAsyncInputStream
* the stream of incoming data from the connection
*/
onInputStreamReady(input) {
dumpn(
"*** onInputStreamReady(input=" +
input +
") on thread " +
Services.tm.currentThread +
" (main is " +
Services.tm.mainThread +
")"
);
dumpn("*** this._state == " + this._state);
// Handle cases where we get more data after a request error has been
// discovered but *before* we can close the connection.
var data = this._data;
if (!data) {
return;
}
try {
data.appendBytes(readBytes(input, input.available()));
} catch (e) {
if (streamClosed(e)) {
dumpn(
"*** WARNING: unexpected error when reading from socket; will " +
"be treated as if the input stream had been closed"
);
dumpn("*** WARNING: actual error was: " + e);
}
// We've lost a race -- input has been closed, but we're still expecting
// to read more data. available() will throw in this case, and since
// we're dead in the water now, destroy the connection.
dumpn(
"*** onInputStreamReady called on a closed input, destroying " +
"connection"
);
this._connection.close();
return;
}
switch (this._state) {
default:
NS_ASSERT(false, "invalid state: " + this._state);
break;
case READER_IN_REQUEST_LINE:
if (!this._processRequestLine()) {
break;
}
/* fall through */
case READER_IN_HEADERS:
if (!this._processHeaders()) {
break;
}
/* fall through */
case READER_IN_BODY:
this._processBody();
}
if (this._state != READER_FINISHED) {
input.asyncWait(this, 0, 0, Services.tm.currentThread);
}
},
//
// see nsISupports.QueryInterface
//
QueryInterface: ChromeUtils.generateQI(["nsIInputStreamCallback"]),
// PRIVATE API
/**
* Processes unprocessed, downloaded data as a request line.
*
* @returns boolean
* true iff the request line has been fully processed
*/
_processRequestLine() {
NS_ASSERT(this._state == READER_IN_REQUEST_LINE);
// Servers SHOULD ignore any empty line(s) received where a Request-Line
// is expected (section 4.1).
var data = this._data;
var line = {};
var readSuccess;
while ((readSuccess = data.readLine(line)) && line.value == "") {
dumpn("*** ignoring beginning blank line...");
}
// if we don't have a full line, wait until we do
if (!readSuccess) {
return false;
}
// we have the first non-blank line
try {
this._parseRequestLine(line.value);
this._state = READER_IN_HEADERS;
this._connection.requestStarted();
return true;
} catch (e) {
this._handleError(e);
return false;
}
},
/**
* Processes stored data, assuming it is either at the beginning or in
* the middle of processing request headers.
*
* @returns boolean
* true iff header data in the request has been fully processed
*/
_processHeaders() {
NS_ASSERT(this._state == READER_IN_HEADERS);
// XXX things to fix here:
//
// - need to support RFC 2047-encoded non-US-ASCII characters
try {
var done = this._parseHeaders();
if (done) {
var request = this._metadata;
// XXX this is wrong for requests with transfer-encodings applied to
// them, particularly chunked (which by its nature can have no
// meaningful Content-Length header)!
this._contentLength = request.hasHeader("Content-Length")
? parseInt(request.getHeader("Content-Length"), 10)
: 0;
dumpn("_processHeaders, Content-length=" + this._contentLength);
this._state = READER_IN_BODY;
}
return done;
} catch (e) {
this._handleError(e);
return false;
}
},
/**
* Processes stored data, assuming it is either at the beginning or in
* the middle of processing the request body.
*
* @returns boolean
* true iff the request body has been fully processed
*/
_processBody() {
NS_ASSERT(this._state == READER_IN_BODY);
// XXX handle chunked transfer-coding request bodies!
try {
if (this._contentLength > 0) {
var data = this._data.purge();
var count = Math.min(data.length, this._contentLength);
dumpn(
"*** loading data=" +
data +
" len=" +
data.length +
" excess=" +
(data.length - count)
);
data.length = count;
var bos = new BinaryOutputStream(this._metadata._bodyOutputStream);
bos.writeByteArray(data);
this._contentLength -= count;
}
dumpn("*** remaining body data len=" + this._contentLength);
if (this._contentLength == 0) {
this._validateRequest();
this._state = READER_FINISHED;
this._handleResponse();
return true;
}
return false;
} catch (e) {
this._handleError(e);
return false;
}
},
/**
* Does various post-header checks on the data in this request.
*
* @throws : HttpError
* if the request was malformed in some way
*/
_validateRequest() {
NS_ASSERT(this._state == READER_IN_BODY);
dumpn("*** _validateRequest");
var metadata = this._metadata;
var headers = metadata._headers;
// 19.6.1.1 -- servers MUST report 400 to HTTP/1.1 requests w/o Host header
var identity = this._connection.server.identity;
if (metadata._httpVersion.atLeast(nsHttpVersion.HTTP_1_1)) {
if (!headers.hasHeader("Host")) {
dumpn("*** malformed HTTP/1.1 or greater request with no Host header!");
throw HTTP_400;
}
// If the Request-URI wasn't absolute, then we need to determine our host.
// We have to determine what scheme was used to access us based on the
// server identity data at this point, because the request just doesn't
// contain enough data on its own to do this, sadly.
if (!metadata._host) {
var host, port;
var hostPort = headers.getHeader("Host");
var colon = hostPort.lastIndexOf(":");
if (hostPort.lastIndexOf("]") > colon) {
colon = -1;
}
if (colon < 0) {
host = hostPort;
port = "";
} else {
host = hostPort.substring(0, colon);
port = hostPort.substring(colon + 1);
}
// NB: We allow an empty port here because, oddly, a colon may be
// present even without a port number, e.g. "example.com:"; in this
// case the default port applies.
if (!HOST_REGEX.test(host) || !/^\d*$/.test(port)) {
dumpn(
"*** malformed hostname (" +
hostPort +
") in Host " +
"header, 400 time"
);
throw HTTP_400;
}
// If we're not given a port, we're stuck, because we don't know what
// scheme to use to look up the correct port here, in general. Since
// the HTTPS case requires a tunnel/proxy and thus requires that the
// requested URI be absolute (and thus contain the necessary
// information), let's assume HTTP will prevail and use that.
port = +port || 80;
var scheme = identity.getScheme(host, port);
if (!scheme) {
dumpn(
"*** unrecognized hostname (" +
hostPort +
") in Host " +
"header, 400 time"
);
throw HTTP_400;
}
metadata._scheme = scheme;
metadata._host = host;
metadata._port = port;
}
} else {
NS_ASSERT(
metadata._host === undefined,
"HTTP/1.0 doesn't allow absolute paths in the request line!"
);
metadata._scheme = identity.primaryScheme;
metadata._host = identity.primaryHost;
metadata._port = identity.primaryPort;
}
NS_ASSERT(
identity.has(metadata._scheme, metadata._host, metadata._port),
"must have a location we recognize by now!"
);
},
/**
* Handles responses in case of error, either in the server or in the request.
*
* @param e
* the specific error encountered, which is an HttpError in the case where
* the request is in some way invalid or cannot be fulfilled; if this isn't
* an HttpError we're going to be paranoid and shut down, because that
* shouldn't happen, ever
*/
_handleError(e) {
// Don't fall back into normal processing!
this._state = READER_FINISHED;
var server = this._connection.server;
if (e instanceof HttpError) {
var code = e.code;
} else {
dumpn(
"!!! UNEXPECTED ERROR: " +
e +
(e.lineNumber ? ", line " + e.lineNumber : "")
);
// no idea what happened -- be paranoid and shut down
code = 500;
server._requestQuit();
}
// make attempted reuse of data an error
this._data = null;
this._connection.processError(code, this._metadata);
},
/**
* Now that we've read the request line and headers, we can actually hand off
* the request to be handled.
*
* This method is called once per request, after the request line and all
* headers and the body, if any, have been received.
*/
_handleResponse() {
NS_ASSERT(this._state == READER_FINISHED);
// We don't need the line-based data any more, so make attempted reuse an
// error.
this._data = null;
this._connection.process(this._metadata);
},
// PARSING
/**
* Parses the request line for the HTTP request associated with this.
*
* @param line : string
* the request line
*/
_parseRequestLine(line) {
NS_ASSERT(this._state == READER_IN_REQUEST_LINE);
dumpn("*** _parseRequestLine('" + line + "')");
var metadata = this._metadata;
// clients and servers SHOULD accept any amount of SP or HT characters
// between fields, even though only a single SP is required (section 19.3)
var request = line.split(/[ \t]+/);
if (!request || request.length != 3) {
dumpn("*** No request in line");
throw HTTP_400;
}
metadata._method = request[0];
// get the HTTP version
var ver = request[2];
var match = ver.match(/^HTTP\/(\d+\.\d+)$/);
if (!match) {
dumpn("*** No HTTP version in line");
throw HTTP_400;
}
// determine HTTP version
try {
metadata._httpVersion = new nsHttpVersion(match[1]);
if (!metadata._httpVersion.atLeast(nsHttpVersion.HTTP_1_0)) {
throw new Error("unsupported HTTP version");
}
} catch (e) {
// we support HTTP/1.0 and HTTP/1.1 only
throw HTTP_501;
}
var fullPath = request[1];
if (metadata._method == "CONNECT") {
metadata._path = "CONNECT";
metadata._scheme = "https";
[metadata._host, metadata._port] = fullPath.split(":");
return;
}
var serverIdentity = this._connection.server.identity;
var scheme, host, port;
if (fullPath.charAt(0) != "/") {
// No absolute paths in the request line in HTTP prior to 1.1
if (!metadata._httpVersion.atLeast(nsHttpVersion.HTTP_1_1)) {
dumpn("*** Metadata version too low");
throw HTTP_400;
}
try {
var uri = Services.io.newURI(fullPath);
fullPath = uri.pathQueryRef;
scheme = uri.scheme;
host = uri.asciiHost;
if (host.includes(":")) {
// If the host still contains a ":", then it is an IPv6 address.
// IPv6 addresses-as-host are registered with brackets, so we need to
// wrap the host in brackets because nsIURI's host lacks them.
// This inconsistency in nsStandardURL is tracked at bug 1195459.
host = `[${host}]`;
}
metadata._host = host;
port = uri.port;
if (port === -1) {
if (scheme === "http") {
port = 80;
} else if (scheme === "https") {
port = 443;
} else {
dumpn("*** Unknown scheme: " + scheme);
throw HTTP_400;
}
}
} catch (e) {
// If the host is not a valid host on the server, the response MUST be a
// 400 (Bad Request) error message (section 5.2). Alternately, the URI
// is malformed.
dumpn("*** Threw when dealing with URI: " + e);
throw HTTP_400;
}
if (
!serverIdentity.has(scheme, host, port) ||
fullPath.charAt(0) != "/"
) {
dumpn("*** serverIdentity unknown or path does not start with '/'");
throw HTTP_400;
}
}
var splitter = fullPath.indexOf("?");
if (splitter < 0) {
// _queryString already set in ctor
metadata._path = fullPath;
} else {
metadata._path = fullPath.substring(0, splitter);
metadata._queryString = fullPath.substring(splitter + 1);
}
metadata._scheme = scheme;
metadata._host = host;
metadata._port = port;
},
/**
* Parses all available HTTP headers in this until the header-ending CRLFCRLF,
* adding them to the store of headers in the request.
*
* @throws
* HTTP_400 if the headers are malformed
* @returns boolean
* true if all headers have now been processed, false otherwise
*/
_parseHeaders() {
NS_ASSERT(this._state == READER_IN_HEADERS);
dumpn("*** _parseHeaders");
var data = this._data;
var headers = this._metadata._headers;
var lastName = this._lastHeaderName;
var lastVal = this._lastHeaderValue;
var line = {};
// eslint-disable-next-line no-constant-condition
while (true) {
dumpn("*** Last name: '" + lastName + "'");
dumpn("*** Last val: '" + lastVal + "'");
NS_ASSERT(
!((lastVal === undefined) ^ (lastName === undefined)),
lastName === undefined
? "lastVal without lastName? lastVal: '" + lastVal + "'"
: "lastName without lastVal? lastName: '" + lastName + "'"
);
if (!data.readLine(line)) {
// save any data we have from the header we might still be processing
this._lastHeaderName = lastName;
this._lastHeaderValue = lastVal;
return false;
}
var lineText = line.value;
dumpn("*** Line text: '" + lineText + "'");
var firstChar = lineText.charAt(0);
// blank line means end of headers
if (lineText == "") {
// we're finished with the previous header
if (lastName) {
try {
headers.setHeader(lastName, lastVal, true);
} catch (e) {
dumpn("*** setHeader threw on last header, e == " + e);
throw HTTP_400;
}
} else {
// no headers in request -- valid for HTTP/1.0 requests
}
// either way, we're done processing headers
this._state = READER_IN_BODY;
return true;
} else if (firstChar == " " || firstChar == "\t") {
// multi-line header if we've already seen a header line
if (!lastName) {
dumpn("We don't have a header to continue!");
throw HTTP_400;
}
// append this line's text to the value; starts with SP/HT, so no need
// for separating whitespace
lastVal += lineText;
} else {
// we have a new header, so set the old one (if one existed)
if (lastName) {
try {
headers.setHeader(lastName, lastVal, true);
} catch (e) {
dumpn("*** setHeader threw on a header, e == " + e);
throw HTTP_400;
}
}
var colon = lineText.indexOf(":"); // first colon must be splitter
if (colon < 1) {
dumpn("*** No colon or missing header field-name");
throw HTTP_400;
}
// set header name, value (to be set in the next loop, usually)
lastName = lineText.substring(0, colon);
lastVal = lineText.substring(colon + 1);
} // empty, continuation, start of header
} // while (true)
},
};
/** The character codes for CR and LF. */
const CR = 0x0d,
LF = 0x0a;
/**
* Calculates the number of characters before the first CRLF pair in array, or
* -1 if the array contains no CRLF pair.
*
* @param array : Array
* an array of numbers in the range [0, 256), each representing a single
* character; the first CRLF is the lowest index i where
* |array[i] == "\r".charCodeAt(0)| and |array[i+1] == "\n".charCodeAt(0)|,
* if such an |i| exists, and -1 otherwise
* @param start : uint
* start index from which to begin searching in array
* @returns int
* the index of the first CRLF if any were present, -1 otherwise
*/
function findCRLF(array, start) {
for (var i = array.indexOf(CR, start); i >= 0; i = array.indexOf(CR, i + 1)) {
if (array[i + 1] == LF) {
return i;
}
}
return -1;
}
/**
* A container which provides line-by-line access to the arrays of bytes with
* which it is seeded.
*/
export function LineData() {
/** An array of queued bytes from which to get line-based characters. */
this._data = [];
/** Start index from which to search for CRLF. */
this._start = 0;
}
LineData.prototype = {
/**
* Appends the bytes in the given array to the internal data cache maintained
* by this.
*/
appendBytes(bytes) {
var count = bytes.length;
var quantum = 262144; // just above half SpiderMonkey's argument-count limit
if (count < quantum) {
Array.prototype.push.apply(this._data, bytes);
return;
}
// Large numbers of bytes may cause Array.prototype.push to be called with
// more arguments than the JavaScript engine supports. In that case append
// bytes in fixed-size amounts until all bytes are appended.
for (var start = 0; start < count; start += quantum) {
var slice = bytes.slice(start, Math.min(start + quantum, count));
Array.prototype.push.apply(this._data, slice);
}
},
/**
* Removes and returns a line of data, delimited by CRLF, from this.
*
* @param out
* an object whose "value" property will be set to the first line of text
* present in this, sans CRLF, if this contains a full CRLF-delimited line
* of text; if this doesn't contain enough data, the value of the property
* is undefined
* @returns boolean
* true if a full line of data could be read from the data in this, false
* otherwise
*/
readLine(out) {
var data = this._data;
var length = findCRLF(data, this._start);
if (length < 0) {
this._start = data.length;
// But if our data ends in a CR, we have to back up one, because
// the first byte in the next packet might be an LF and if we
// start looking at data.length we won't find it.
if (data.length && data[data.length - 1] === CR) {
--this._start;
}
return false;
}
// Reset for future lines.
this._start = 0;
//
// We have the index of the CR, so remove all the characters, including
// CRLF, from the array with splice, and convert the removed array
// (excluding the trailing CRLF characters) into the corresponding string.
//
var leading = data.splice(0, length + 2);
var quantum = 262144;
var line = "";
for (var start = 0; start < length; start += quantum) {
var slice = leading.slice(start, Math.min(start + quantum, length));
line += String.fromCharCode.apply(null, slice);
}
out.value = line;
return true;
},
/**
* Removes the bytes currently within this and returns them in an array.
*
* @returns Array
* the bytes within this when this method is called
*/
purge() {
var data = this._data;
this._data = [];
return data;
},
};
/**
* Creates a request-handling function for an nsIHttpRequestHandler object.
*/
function createHandlerFunc(handler) {
return function (metadata, response) {
handler.handle(metadata, response);
};
}
/**
* The default handler for directories; writes an HTML response containing a
* slightly-formatted directory listing.
*/
function defaultIndexHandler(metadata, response) {
response.setHeader("Content-Type", "text/html;charset=utf-8", false);
var path = htmlEscape(decodeURI(metadata.path));
//
// Just do a very basic bit of directory listings -- no need for too much
// fanciness, especially since we don't have a style sheet in which we can
// stick rules (don't want to pollute the default path-space).
//
var body =
"<html>\
<head>\
<title>" +
path +
"</title>\
</head>\
<body>\
<h1>" +
path +
'</h1>\
<ol style="list-style-type: none">';
var directory = metadata.getProperty("directory");
NS_ASSERT(directory && directory.isDirectory());
var fileList = [];
var files = directory.directoryEntries;
while (files.hasMoreElements()) {
var f = files.nextFile;
let name = f.leafName;
if (
!f.isHidden() &&
(name.charAt(name.length - 1) != HIDDEN_CHAR ||
name.charAt(name.length - 2) == HIDDEN_CHAR)
) {
fileList.push(f);
}
}
fileList.sort(fileSort);
for (var i = 0; i < fileList.length; i++) {
var file = fileList[i];
try {
let name = file.leafName;
if (name.charAt(name.length - 1) == HIDDEN_CHAR) {
name = name.substring(0, name.length - 1);
}
var sep = file.isDirectory() ? "/" : "";
// Note: using " to delimit the attribute here because encodeURIComponent
// passes through '.
var item =
'<li><a href="' +
encodeURIComponent(name) +
sep +
'">' +
htmlEscape(name) +
sep +
"</a></li>";
body += item;
} catch (e) {
/* some file system error, ignore the file */
}
}
body +=
" </ol>\
</body>\
</html>";
response.bodyOutputStream.write(body, body.length);
}
/**
* Sorts a and b (nsIFile objects) into an aesthetically pleasing order.
*/
function fileSort(a, b) {
var dira = a.isDirectory(),
dirb = b.isDirectory();
if (dira && !dirb) {
return -1;
}
if (dirb && !dira) {
return 1;
}
var namea = a.leafName.toLowerCase(),
nameb = b.leafName.toLowerCase();
return nameb > namea ? -1 : 1;
}
/**
* Converts an externally-provided path into an internal path for use in
* determining file mappings.
*
* @param path
* the path to convert
* @param encoded
* true if the given path should be passed through decodeURI prior to
* conversion
* @throws URIError
* if path is incorrectly encoded
*/
function toInternalPath(path, encoded) {
if (encoded) {
path = decodeURI(path);
}
var comps = path.split("/");
for (var i = 0, sz = comps.length; i < sz; i++) {
var comp = comps[i];
if (comp.charAt(comp.length - 1) == HIDDEN_CHAR) {
comps[i] = comp + HIDDEN_CHAR;
}
}
return comps.join("/");
}
const PERMS_READONLY = (4 << 6) | (4 << 3) | 4;
/**
* Adds custom-specified headers for the given file to the given response, if
* any such headers are specified.
*
* @param file
* the file on the disk which is to be written
* @param metadata
* metadata about the incoming request
* @param response
* the Response to which any specified headers/data should be written
* @throws HTTP_500
* if an error occurred while processing custom-specified headers
*/
function maybeAddHeadersInternal(
file,
metadata,
response,
informationalResponse
) {
var name = file.leafName;
if (name.charAt(name.length - 1) == HIDDEN_CHAR) {
name = name.substring(0, name.length - 1);
}
var headerFile = file.parent;
if (!informationalResponse) {
headerFile.append(name + HEADERS_SUFFIX);
--> --------------------
--> maximum size reached
--> --------------------
[ Normaldarstellung0.64Diashow
etwas mehr zur Ethik
]
|
2026-03-28
|
|
|
|
|
