-// Copyright 2002 Adam Megacz, see the COPYING file for licensing [GPL]
+// Copyright 2003 Adam Megacz, see the COPYING file for licensing [GPL]
package org.xwt;
import java.net.*;
/** true iff we are allowed to skip the resolve check (only allowed when we're downloading the PAC script) */
boolean skipResolveCheck = false;
+ /** true iff we're using a proxy */
+ boolean proxied = false;
+
// Public Methods ////////////////////////////////////////////////////////////////////////////////////////
// Safeguarded DNS Resolver ///////////////////////////////////////////////////////////////////////////
/**
- * resolves the hostname and returns it as a string in the form "x.y.z.w", except for the special case "xmlrpc.xwt.org".
+ * resolves the hostname and returns it as a string in the form "x.y.z.w"
* @throws HTTPException if the host falls within a firewalled netblock
*/
private void resolveAndCheckIfFirewalled(String host) throws HTTPException {
- // special case
- if (host.equals("xmlrpc.xwt.org")) return;
-
// cached
if (resolvedHosts.get(host) != null) return;
return;
} catch (UnknownHostException uhe) { }
- // resolve using xmlrpc.xwt.org
if (Platform.detectProxy() == null) throw new HTTPException("could not resolve hostname \"" + host + "\" and no proxy configured");
- if (Log.on) Log.log(this, " could not resolve host " + host + "; using xmlrpc.xwt.org to ensure security");
- try {
- JS.Array args = new JS.Array();
- args.addElement(host);
- Object ret = new XMLRPC("http://xmlrpc.xwt.org/RPC2/", "dns.resolve").call(args);
- if (ret == null || !(ret instanceof String)) throw new Exception(" xmlrpc.xwt.org returned non-String: " + ret);
- resolvedHosts.put(host, ret);
- return;
- } catch (Throwable e) {
- throw new HTTPException("exception while attempting to use xmlrpc.xwt.org to resolve " + host + ": " + e);
- }
}
}
/** executes the PAC script and dispatches a call to one of the other attempt methods based on the result */
- public Socket attemptPAC(org.xwt.js.JS.Function pacFunc) {
- throw new Error("not implemented");
- // FIXME
- /*
+ public Socket attemptPAC(org.xwt.js.JS.Callable pacFunc) {
if (Log.verbose) Log.log(this, "evaluating PAC script");
String pac = null;
try {
- Object obj = pacFunc.call(Proxy.proxyAutoConfigRootScope, null, new Object[] { url.toString(), url.getHost() });
+ org.xwt.js.JS.Array args = new org.xwt.js.JS.Array();
+ args.addElement(url.toString());
+ args.addElement(url.getHost());
+ Object obj = pacFunc.call(args);
if (Log.verbose) Log.log(this, " PAC script returned \"" + obj + "\"");
pac = obj.toString();
} catch (Throwable e) {
}
if (Log.on) Log.log(this, "all PAC results exhausted");
return null;
- */
}
if (sock == null && pi != null && ssl && pi.httpsProxyHost != null) sock = attemptHttpProxy(pi.httpsProxyHost, pi.httpsProxyPort);
if (sock == null && pi != null && pi.httpProxyHost != null) sock = attemptHttpProxy(pi.httpProxyHost, pi.httpProxyPort);
if (sock == null && pi != null && pi.socksProxyHost != null) sock = attemptSocksProxy(pi.socksProxyHost, pi.socksProxyPort);
+ proxied = sock != null;
if (sock == null) sock = attemptDirect();
if (sock == null) throw new HTTPException("unable to contact host " + host);
if (in == null) in = new BufferedInputStream(sock.getInputStream());
PrintWriter pw = new PrintWriter(new OutputStreamWriter(sock.getOutputStream()));
if (content != null) {
pw.print("POST " + path + " HTTP/1.1\r\n");
- int contentLength = content.substring(0, 2).equals("\r\n") ?
- content.length() - 2 :
- (content.length() - content.indexOf("\r\n\r\n") - 4);
+ int contentLength = content.substring(0, 2).equals("\r\n") ?
+ content.length() - 2 :
+ (content.length() - content.indexOf("\r\n\r\n") - 4);
pw.print("Content-Length: " + contentLength + "\r\n");
if (contentType != null) pw.print("Content-Type: " + contentType + "\r\n");
} else {
pw.print("User-Agent: XWT\r\n");
pw.print("Host: " + (host + (port == 80 ? "" : (":" + port))) + "\r\n");
+ if (proxied) pw.print("X-RequestOrigin: " + Main.originHost + "\r\n");
if (Proxy.Authorization.authorization != null) pw.print("Proxy-Authorization: " + Proxy.Authorization.authorization2 + "\r\n");
if (authCache.get(originalUrl) != null) pw.print("Authorization: " + authCache.get(originalUrl) + "\r\n");
this.length = length == -1 ? 0 : length;
}
+ public boolean markSupported() { return false; }
+ public int read(byte[] b) throws IOException { return read(b, 0, b.length); }
+ public long skip(long n) throws IOException { return read(null, -1, (int)n); }
+ public int available() throws IOException {
+ if (contentLength == -1) return java.lang.Math.min(super.available(), length);
+ return super.available();
+ }
+
+ public int read() throws IOException {
+ byte[] b = new byte[1];
+ int ret = read(b, 0, 1);
+ return ret == -1 ? -1 : b[0] & 0xff;
+ }
+
private void readChunk() throws IOException {
if (chunkedDone) return;
if (!firstChunk) super.skip(2); // CRLF
chunkLen += (char)i;
}
}
- length = Integer.parseInt(chunkLen, 16);
+ length = Integer.parseInt(chunkLen.trim(), 16);
if (length == 0) chunkedDone = true;
}
boolean good = false;
try {
if (length == 0 && contentLength == -1) {
- readChunk();
- if (chunkedDone) return -1;
- } else {
- if (length == 0) return -1;
- }
+ readChunk();
+ if (chunkedDone) { good = true; return -1; }
+ } else {
+ if (length == 0) { good = true; return -1; }
+ }
if (len > length) len = length;
- int ret = super.read(b, off, len);
- length -= ret;
- good = true;
+ int ret = b == null ? (int)super.skip(len) : super.read(b, off, len);
+ if (ret >= 0) {
+ length -= ret;
+ good = true;
+ }
return ret;
} finally {
if (!good) invalid = true;
return ret;
}
+
+ // Proxy ///////////////////////////////////////////////////////////
+
+ /** encapsulates most of the proxy logic; some is shared in HTTP.java */
+ public static class Proxy {
+
+ public Proxy() { }
+
+ /** the HTTP Proxy host to use */
+ public String httpProxyHost = null;
+
+ /** the HTTP Proxy port to use */
+ public int httpProxyPort = -1;
+
+ /** if a seperate proxy should be used for HTTPS, this is the hostname; otherwise, httpProxyHost is used */
+ public String httpsProxyHost = null;
+
+ /** if a seperate proxy should be used for HTTPS, this is the port */
+ public int httpsProxyPort = -1;
+
+ /** the SOCKS Proxy Host to use */
+ public String socksProxyHost = null;
+
+ /** the SOCKS Proxy Port to use */
+ public int socksProxyPort = -1;
+
+ /** hosts to be excluded from proxy use; wildcards permitted */
+ public String[] excluded = null;
+
+ /** the PAC script */
+ public JS.Callable proxyAutoConfigFunction = null;
+
+ public static Proxy detectProxyViaManual() {
+ Proxy ret = new Proxy();
+
+ ret.httpProxyHost = Platform.getEnv("http_proxy");
+ if (ret.httpProxyHost != null) {
+ if (ret.httpProxyHost.startsWith("http://")) ret.httpProxyHost = ret.httpProxyHost.substring(7);
+ if (ret.httpProxyHost.endsWith("/")) ret.httpProxyHost = ret.httpProxyHost.substring(0, ret.httpProxyHost.length() - 1);
+ if (ret.httpProxyHost.indexOf(':') != -1) {
+ ret.httpProxyPort = Integer.parseInt(ret.httpProxyHost.substring(ret.httpProxyHost.indexOf(':') + 1));
+ ret.httpProxyHost = ret.httpProxyHost.substring(0, ret.httpProxyHost.indexOf(':'));
+ } else {
+ ret.httpProxyPort = 80;
+ }
+ }
+
+ ret.httpsProxyHost = Platform.getEnv("https_proxy");
+ if (ret.httpsProxyHost != null) {
+ if (ret.httpsProxyHost.startsWith("https://")) ret.httpsProxyHost = ret.httpsProxyHost.substring(7);
+ if (ret.httpsProxyHost.endsWith("/")) ret.httpsProxyHost = ret.httpsProxyHost.substring(0, ret.httpsProxyHost.length() - 1);
+ if (ret.httpsProxyHost.indexOf(':') != -1) {
+ ret.httpsProxyPort = Integer.parseInt(ret.httpsProxyHost.substring(ret.httpsProxyHost.indexOf(':') + 1));
+ ret.httpsProxyHost = ret.httpsProxyHost.substring(0, ret.httpsProxyHost.indexOf(':'));
+ } else {
+ ret.httpsProxyPort = 80;
+ }
+ }
+
+ ret.socksProxyHost = Platform.getEnv("socks_proxy");
+ if (ret.socksProxyHost != null) {
+ if (ret.socksProxyHost.startsWith("socks://")) ret.socksProxyHost = ret.socksProxyHost.substring(7);
+ if (ret.socksProxyHost.endsWith("/")) ret.socksProxyHost = ret.socksProxyHost.substring(0, ret.socksProxyHost.length() - 1);
+ if (ret.socksProxyHost.indexOf(':') != -1) {
+ ret.socksProxyPort = Integer.parseInt(ret.socksProxyHost.substring(ret.socksProxyHost.indexOf(':') + 1));
+ ret.socksProxyHost = ret.socksProxyHost.substring(0, ret.socksProxyHost.indexOf(':'));
+ } else {
+ ret.socksProxyPort = 80;
+ }
+ }
+
+ String noproxy = Platform.getEnv("no_proxy");
+ if (noproxy != null) {
+ StringTokenizer st = new StringTokenizer(noproxy, ",");
+ ret.excluded = new String[st.countTokens()];
+ for(int i=0; st.hasMoreTokens(); i++) ret.excluded[i] = st.nextToken();
+ }
+
+ if (ret.httpProxyHost == null && ret.socksProxyHost == null) return null;
+ return ret;
+ }
+
+ public static JS.Scope proxyAutoConfigRootScope = new ProxyAutoConfigRootScope();
+ public static JS.Callable getProxyAutoConfigFunction(String url) {
+ try {
+ BufferedReader br = new BufferedReader(new InputStreamReader(new HTTP(url, true).GET()));
+ String s = null;
+ String script = "";
+ while((s = br.readLine()) != null) script += s + "\n";
+ if (Log.on) Log.log(Proxy.class, "successfully retrieved WPAD PAC:");
+ if (Log.on) Log.log(Proxy.class, script);
+
+ // MS CARP hack
+ Vector carpHosts = new Vector();
+ for(int i=0; i<script.length(); i++)
+ if (script.regionMatches(i, "new Node(", 0, 9)) {
+ String host = script.substring(i + 10, script.indexOf('\"', i + 11));
+ if (Log.on) Log.log(Proxy.class, "Detected MS Proxy Server CARP Script, Host=" + host);
+ carpHosts.addElement(host);
+ }
+ if (carpHosts.size() > 0) {
+ script = "function FindProxyForURL(url, host) {\nreturn \"";
+ for(int i=0; i<carpHosts.size(); i++)
+ script += "PROXY " + carpHosts.elementAt(i) + "; ";
+ script += "\";\n}";
+ if (Log.on) Log.log(Proxy.class, "DeCARPed PAC script:");
+ if (Log.on) Log.log(Proxy.class, script);
+ }
+
+ JS.CompiledFunction scr = JS.parse("PAC script at " + url, 0, new StringReader(script));
+ scr.call(new JS.Array(), proxyAutoConfigRootScope);
+ return (JS.Callable)proxyAutoConfigRootScope.get("FindProxyForURL");
+ } catch (Exception e) {
+ if (Log.on) {
+ Log.log(Platform.class, "WPAD detection failed due to:");
+ if (e instanceof JS.Exn) {
+ try {
+ org.xwt.js.JS.Array arr = new org.xwt.js.JS.Array();
+ arr.addElement(((JS.Exn)e).getObject());
+ // FIXME
+ //XWT.recursivePrintObject.call();
+ } catch (Exception e2) {
+ Log.log(Platform.class, e);
+ }
+ }
+ else Log.log(Platform.class, e);
+ }
+ return null;
+ }
+ }
+
+
+ // Authorization ///////////////////////////////////////////////////////////////////////////////////
+
+ public static class Authorization {
+
+ static public String authorization = null;
+ static public String authorization2 = null;
+ static public Semaphore waitingForUser = new Semaphore();
+
+ public static synchronized void getPassword(final String realm, final String style, final String proxyIP, String oldAuth) {
+
+ // this handles cases where multiple threads hit the proxy auth at the same time -- all but one will block on the
+ // synchronized keyword. If 'authorization' changed while the thread was blocked, it means that the user entered
+ // a password, so we should reattempt authorization.
+
+ if (authorization != oldAuth) return;
+ if (Log.on) Log.log(Authorization.class, "displaying proxy authorization dialog");
+ MessageQueue.add(new Message() {
+ public void perform() {
+ Box b = new Box();
+ Template.getTemplate("org.xwt.builtin.proxy_authorization", null).apply(b, null, null, null, 0, 0);
+ b.put("realm", realm);
+ b.put("proxyIP", proxyIP);
+ }
+ });
+
+ waitingForUser.block();
+ if (Log.on) Log.log(Authorization.class, "got proxy authorization info; re-attempting connection");
+
+ }
+ }
+
+
+ // ProxyAutoConfigRootScope ////////////////////////////////////////////////////////////////////
+
+ public static class ProxyAutoConfigRootScope extends JS.Scope {
+
+ public ProxyAutoConfigRootScope() { super(null); }
+
+ // FIXME: needs "standard objects"
+
+ public Object get(Object name) {
+ if (name.equals("isPlainHostName")) return isPlainHostName;
+ else if (name.equals("dnsDomainIs")) return dnsDomainIs;
+ else if (name.equals("localHostOrDomainIs")) return localHostOrDomainIs;
+ else if (name.equals("isResolvable")) return isResolvable;
+ else if (name.equals("isInNet")) return isInNet;
+ else if (name.equals("dnsResolve")) return dnsResolve;
+ else if (name.equals("myIpAddress")) return myIpAddress;
+ else if (name.equals("dnsDomainLevels")) return dnsDomainLevels;
+ else if (name.equals("shExpMatch")) return shExpMatch;
+ else if (name.equals("weekdayRange")) return weekdayRange;
+ else if (name.equals("dateRange")) return dateRange;
+ else if (name.equals("timeRange")) return timeRange;
+ else if (name.equals("ProxyConfig")) return ProxyConfig;
+ else return super.get(name);
+ }
+
+ private static final JS.Obj proxyConfigBindings = new JS.Obj();
+ private static final JS.Obj ProxyConfig = new JS.Obj() {
+ public Object get(Object name) {
+ if (name.equals("bindings")) return proxyConfigBindings;
+ return null;
+ }
+ };
+
+ private static final JS.Callable isPlainHostName = new JS.Callable() {
+ public Object call(org.xwt.js.JS.Array args) throws JS.Exn {
+ return (args.elementAt(0).toString().indexOf('.') == -1) ? Boolean.TRUE : Boolean.FALSE;
+ }
+ };
+
+ private static final JS.Callable dnsDomainIs = new JS.Callable() {
+ public Object call(org.xwt.js.JS.Array args) throws JS.Exn {
+ return (args.elementAt(0).toString().endsWith(args.elementAt(1).toString())) ? Boolean.TRUE : Boolean.FALSE;
+ }
+ };
+
+ private static final JS.Callable localHostOrDomainIs = new JS.Callable() {
+ public Object call(org.xwt.js.JS.Array args) throws JS.Exn {
+ return (args.elementAt(0).toString().equals(args.elementAt(1).toString()) ||
+ (args.elementAt(0).toString().indexOf('.') == -1 && args.elementAt(1).toString().startsWith(args.elementAt(0).toString()))) ?
+ Boolean.TRUE : Boolean.FALSE;
+ }
+ };
+
+ private static final JS.Callable isResolvable = new JS.Callable() {
+ public Object call(org.xwt.js.JS.Array args) throws JS.Exn {
+ try {
+ return (InetAddress.getByName(args.elementAt(0).toString()) != null) ? Boolean.TRUE : Boolean.FALSE;
+ } catch (UnknownHostException e) {
+ return Boolean.FALSE;
+ }
+ }
+ };
+
+ private static final JS.Callable isInNet = new JS.Callable() {
+ public Object call(org.xwt.js.JS.Array args) throws JS.Exn {
+ if (args.length() != 3) return Boolean.FALSE;
+ try {
+ byte[] host = InetAddress.getByName(args.elementAt(0).toString()).getAddress();
+ byte[] net = InetAddress.getByName(args.elementAt(1).toString()).getAddress();
+ byte[] mask = InetAddress.getByName(args.elementAt(2).toString()).getAddress();
+ return ((host[0] & mask[0]) == net[0] &&
+ (host[1] & mask[1]) == net[1] &&
+ (host[2] & mask[2]) == net[2] &&
+ (host[3] & mask[3]) == net[3]) ?
+ Boolean.TRUE : Boolean.FALSE;
+ } catch (Exception e) {
+ throw new JS.Exn("exception in isInNet(): " + e);
+ }
+ }
+ };
+
+ private static final JS.Callable dnsResolve = new JS.Callable() {
+ public Object call(org.xwt.js.JS.Array args) throws JS.Exn {
+ try {
+ return InetAddress.getByName(args.elementAt(0).toString()).getHostAddress();
+ } catch (UnknownHostException e) {
+ return null;
+ }
+ }
+ };
+
+ private static final JS.Callable myIpAddress = new JS.Callable() {
+ public Object call(org.xwt.js.JS.Array args) throws JS.Exn {
+ try {
+ return InetAddress.getLocalHost().getHostAddress();
+ } catch (UnknownHostException e) {
+ if (Log.on) Log.log(this, "strange... host does not know its own address");
+ return null;
+ }
+ }
+ };
+
+ private static final JS.Callable dnsDomainLevels = new JS.Callable() {
+ public Object call(org.xwt.js.JS.Array args) throws JS.Exn {
+ String s = args.elementAt(0).toString();
+ int i = 0;
+ while((i = s.indexOf('.', i)) != -1) i++;
+ return new Integer(i);
+ }
+ };
+
+ private static boolean match(String[] arr, String s, int index) {
+ if (index >= arr.length) return true;
+ for(int i=0; i<s.length(); i++) {
+ String s2 = s.substring(i);
+ if (s2.startsWith(arr[index]) && match(arr, s2.substring(arr[index].length()), index + 1)) return true;
+ }
+ return false;
+ }
+
+ private static final JS.Callable shExpMatch = new JS.Callable() {
+ public Object call(org.xwt.js.JS.Array args) throws JS.Exn {
+ StringTokenizer st = new StringTokenizer(args.elementAt(1).toString(), "*", false);
+ String[] arr = new String[st.countTokens()];
+ String s = args.elementAt(0).toString();
+ for (int i=0; st.hasMoreTokens(); i++) arr[i] = st.nextToken();
+ return match(arr, s, 0) ? Boolean.TRUE : Boolean.FALSE;
+ }
+ };
+
+ public static String[] days = { "SUN", "MON", "TUE", "WED", "THU", "FRI", "SAT" };
+
+ private static final JS.Callable weekdayRange = new JS.Callable() {
+ public Object call(org.xwt.js.JS.Array args) throws JS.Exn {
+ TimeZone tz = (args.length() < 3 || args.elementAt(2) == null || !args.elementAt(2).equals("GMT")) ? TimeZone.getTimeZone("UTC") : TimeZone.getDefault();
+ Calendar c = new GregorianCalendar();
+ c.setTimeZone(tz);
+ c.setTime(new java.util.Date());
+ java.util.Date d = c.getTime();
+ int day = d.getDay();
+
+ String d1s = args.elementAt(0).toString().toUpperCase();
+ int d1 = 0, d2 = 0;
+ for(int i=0; i<days.length; i++) if (days[i].equals(d1s)) d1 = i;
+
+ if (args.length() == 1)
+ return d1 == day ? Boolean.TRUE : Boolean.FALSE;
+
+ String d2s = args.elementAt(1).toString().toUpperCase();
+ for(int i=0; i<days.length; i++) if (days[i].equals(d2s)) d2 = i;
+
+ return
+ ((d1 <= d2 && day >= d1 && day <= d2) ||
+ (d1 > d2 && (day >= d1 || day <= d2))) ?
+ Boolean.TRUE : Boolean.FALSE;
+ }
+ };
+
+ private static final JS.Callable dateRange = new JS.Callable() {
+ public Object call(org.xwt.js.JS.Array args) throws JS.Exn {
+ throw new JS.Exn("XWT does not support dateRange() in PAC scripts");
+ }
+ };
+
+ private static final JS.Callable timeRange = new JS.Callable() {
+ public Object call(org.xwt.js.JS.Array args) throws JS.Exn {
+ throw new JS.Exn("XWT does not support timeRange() in PAC scripts");
+ }
+ };
+
+ }
+
+ }
+
}
projects / org.ibex.core.git / blobdiff