1 // Copyright 2002 Adam Megacz, see the COPYING file for licensing [GPL]
8 import org.mozilla.javascript.*;
9 import org.bouncycastle.util.encoders.Base64;
11 /** encapsulates most of the proxy logic; some is shared in HTTP.java */
16 /** the HTTP Proxy host to use */
17 public String httpProxyHost = null;
19 /** the HTTP Proxy port to use */
20 public int httpProxyPort = -1;
22 /** if a seperate proxy should be used for HTTPS, this is the hostname; otherwise, httpProxyHost is used */
23 public String httpsProxyHost = null;
25 /** if a seperate proxy should be used for HTTPS, this is the port */
26 public int httpsProxyPort = -1;
28 /** the SOCKS Proxy Host to use */
29 public String socksProxyHost = null;
31 /** the SOCKS Proxy Port to use */
32 public int socksProxyPort = -1;
34 /** hosts to be excluded from proxy use; wildcards permitted */
35 public String[] excluded = null;
38 public Function proxyAutoConfigFunction = null;
40 public static Proxy detectProxyViaManual() {
41 Proxy ret = new Proxy();
43 ret.httpProxyHost = Platform.getEnv("http_proxy");
44 if (ret.httpProxyHost != null) {
45 if (ret.httpProxyHost.startsWith("http://")) ret.httpProxyHost = ret.httpProxyHost.substring(7);
46 if (ret.httpProxyHost.endsWith("/")) ret.httpProxyHost = ret.httpProxyHost.substring(0, ret.httpProxyHost.length() - 1);
47 if (ret.httpProxyHost.indexOf(':') != -1) {
48 ret.httpProxyPort = Integer.parseInt(ret.httpProxyHost.substring(ret.httpProxyHost.indexOf(':') + 1));
49 ret.httpProxyHost = ret.httpProxyHost.substring(0, ret.httpProxyHost.indexOf(':'));
51 ret.httpProxyPort = 80;
55 ret.httpsProxyHost = Platform.getEnv("https_proxy");
56 if (ret.httpsProxyHost != null) {
57 if (ret.httpsProxyHost.startsWith("https://")) ret.httpsProxyHost = ret.httpsProxyHost.substring(7);
58 if (ret.httpsProxyHost.endsWith("/")) ret.httpsProxyHost = ret.httpsProxyHost.substring(0, ret.httpsProxyHost.length() - 1);
59 if (ret.httpsProxyHost.indexOf(':') != -1) {
60 ret.httpsProxyPort = Integer.parseInt(ret.httpsProxyHost.substring(ret.httpsProxyHost.indexOf(':') + 1));
61 ret.httpsProxyHost = ret.httpsProxyHost.substring(0, ret.httpsProxyHost.indexOf(':'));
63 ret.httpsProxyPort = 80;
67 ret.socksProxyHost = Platform.getEnv("socks_proxy");
68 if (ret.socksProxyHost != null) {
69 if (ret.socksProxyHost.startsWith("socks://")) ret.socksProxyHost = ret.socksProxyHost.substring(7);
70 if (ret.socksProxyHost.endsWith("/")) ret.socksProxyHost = ret.socksProxyHost.substring(0, ret.socksProxyHost.length() - 1);
71 if (ret.socksProxyHost.indexOf(':') != -1) {
72 ret.socksProxyPort = Integer.parseInt(ret.socksProxyHost.substring(ret.socksProxyHost.indexOf(':') + 1));
73 ret.socksProxyHost = ret.socksProxyHost.substring(0, ret.socksProxyHost.indexOf(':'));
75 ret.socksProxyPort = 80;
79 String noproxy = Platform.getEnv("no_proxy");
80 if (noproxy != null) {
81 StringTokenizer st = new StringTokenizer(noproxy, ",");
82 ret.excluded = new String[st.countTokens()];
83 for(int i=0; st.hasMoreTokens(); i++) ret.excluded[i] = st.nextToken();
86 if (ret.httpProxyHost == null && ret.socksProxyHost == null) return null;
90 public static Scriptable proxyAutoConfigRootScope = new ProxyAutoConfigRootScope();
92 public static Function getProxyAutoConfigFunction(String url) {
94 Context cx = Context.enter();
95 cx.setOptimizationLevel(-1);
96 BufferedReader br = new BufferedReader(new InputStreamReader(new HTTP(url, true).GET()));
99 while((s = br.readLine()) != null) script += s + "\n";
100 if (Log.on) Log.log(Proxy.class, "successfully retrieved WPAD PAC:");
101 if (Log.on) Log.log(Proxy.class, script);
104 Vector carpHosts = new Vector();
105 for(int i=0; i<script.length(); i++)
106 if (script.regionMatches(i, "new Node(", 0, 9)) {
107 String host = script.substring(i + 10, script.indexOf('\"', i + 11));
108 if (Log.on) Log.log(Proxy.class, "Detected MS Proxy Server CARP Script, Host=" + host);
109 carpHosts.addElement(host);
111 if (carpHosts.size() > 0) {
112 script = "function FindProxyForURL(url, host) {\nreturn \"";
113 for(int i=0; i<carpHosts.size(); i++)
114 script += "PROXY " + carpHosts.elementAt(i) + "; ";
116 if (Log.on) Log.log(Proxy.class, "DeCARPed PAC script:");
117 if (Log.on) Log.log(Proxy.class, script);
120 Script scr = cx.compileReader(proxyAutoConfigRootScope, new StringReader(script), "PAC script at " + url, 0, null);
121 scr.exec(cx, proxyAutoConfigRootScope);
122 return (Function)proxyAutoConfigRootScope.get("FindProxyForURL", null);
123 } catch (Exception e) {
125 Log.log(Platform.class, "WPAD detection failed due to:");
126 if (e instanceof EcmaError) Log.log(HTTP.class, ((EcmaError)e).getMessage() + " at " +
127 ((EcmaError)e).getSourceName() + ":" + ((EcmaError)e).getLineNumber());
128 else Log.log(Platform.class, e);
135 // Authorization ///////////////////////////////////////////////////////////////////////////////////
137 public static class Authorization {
139 static public String authorization = null;
140 static public String authorization2 = null;
141 static public Semaphore waitingForUser = new Semaphore();
143 public static synchronized void getPassword(final String realm, final String style, final String proxyIP, String oldAuth) {
145 // this handles cases where multiple threads hit the proxy auth at the same time -- all but one will block on the
146 // synchronized keyword. If 'authorization' changed while the thread was blocked, it means that the user entered
147 // a password, so we should reattempt authorization.
149 if (authorization != oldAuth) return;
150 if (Log.on) Log.log(Authorization.class, "displaying proxy authorization dialog");
151 MessageQueue.add(new Message() {
152 public void perform() {
153 Box b = new Box("org.xwt.builtin.proxy_authorization", null);
154 b.put("realm", realm);
155 b.put("proxyIP", proxyIP);
159 waitingForUser.block();
160 if (Log.on) Log.log(Authorization.class, "got proxy authorization info; re-attempting connection");
166 // ProxyAutoConfigRootScope ////////////////////////////////////////////////////////////////////
168 public static class ProxyAutoConfigRootScope extends ScriptableObject {
170 public String getClassName() { return "ProxyAutoConfigRootScope"; }
171 ProxyAutoConfigRootScope() { Context.enter().initStandardObjects(this); }
173 public Object get(String name, Scriptable start) {
174 if (name.equals("isPlainHostName")) return isPlainHostName;
175 else if (name.equals("dnsDomainIs")) return dnsDomainIs;
176 else if (name.equals("localHostOrDomainIs")) return localHostOrDomainIs;
177 else if (name.equals("isResolvable")) return isResolvable;
178 else if (name.equals("isInNet")) return isInNet;
179 else if (name.equals("dnsResolve")) return dnsResolve;
180 else if (name.equals("myIpAddress")) return myIpAddress;
181 else if (name.equals("dnsDomainLevels")) return dnsDomainLevels;
182 else if (name.equals("shExpMatch")) return shExpMatch;
183 else if (name.equals("weekdayRange")) return weekdayRange;
184 else if (name.equals("dateRange")) return dateRange;
185 else if (name.equals("timeRange")) return timeRange;
186 else if (name.equals("ProxyConfig")) return ProxyConfig;
187 else return super.get(name, start);
190 private static final JSObject proxyConfigBindings = new JSObject();
191 private static final JSObject ProxyConfig = new JSObject() {
192 public Object get(String name, Scriptable start) {
193 if (name.equals("bindings")) return proxyConfigBindings;
198 private static abstract class JSFunction extends JSObject implements Function {
199 JSFunction() { setSeal(true); }
200 public Scriptable construct(Context cx, Scriptable scope, java.lang.Object[] args) { return null; }
203 private static final JSFunction isPlainHostName = new JSFunction() {
204 public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
205 return (args[0].toString().indexOf('.') == -1) ? Boolean.TRUE : Boolean.FALSE;
209 private static final JSFunction dnsDomainIs = new JSFunction() {
210 public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
211 return (args[0].toString().endsWith(args[1].toString())) ? Boolean.TRUE : Boolean.FALSE;
215 private static final JSFunction localHostOrDomainIs = new JSFunction() {
216 public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
217 return (args[0].toString().equals(args[1].toString()) ||
218 (args[0].toString().indexOf('.') == -1 && args[1].toString().startsWith(args[0].toString()))) ?
219 Boolean.TRUE : Boolean.FALSE;
223 private static final JSFunction isResolvable = new JSFunction() {
224 public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
226 return (InetAddress.getByName(args[0].toString()) != null) ? Boolean.TRUE : Boolean.FALSE;
227 } catch (UnknownHostException e) {
228 return Boolean.FALSE;
233 private static final JSFunction isInNet = new JSFunction() {
234 public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
235 if (args.length != 3) return Boolean.FALSE;
237 byte[] host = InetAddress.getByName(args[0].toString()).getAddress();
238 byte[] net = InetAddress.getByName(args[1].toString()).getAddress();
239 byte[] mask = InetAddress.getByName(args[2].toString()).getAddress();
240 return ((host[0] & mask[0]) == net[0] &&
241 (host[1] & mask[1]) == net[1] &&
242 (host[2] & mask[2]) == net[2] &&
243 (host[3] & mask[3]) == net[3]) ?
244 Boolean.TRUE : Boolean.FALSE;
245 } catch (Exception e) {
246 throw new JavaScriptException("exception in isInNet(): " + e);
251 private static final JSFunction dnsResolve = new JSFunction() {
252 public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
254 return InetAddress.getByName(args[0].toString()).getHostAddress();
255 } catch (UnknownHostException e) {
261 private static final JSFunction myIpAddress = new JSFunction() {
262 public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
264 return InetAddress.getLocalHost().getHostAddress();
265 } catch (UnknownHostException e) {
266 if (Log.on) Log.log(this, "strange... host does not know its own address");
272 private static final JSFunction dnsDomainLevels = new JSFunction() {
273 public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
274 String s = args[0].toString();
276 while((i = s.indexOf('.', i)) != -1) i++;
277 return new Integer(i);
281 private static boolean match(String[] arr, String s, int index) {
282 if (index == arr.length) return true;
283 for(int i=0; i<s.length(); i++) {
284 String s2 = s.substring(i);
285 if (s2.startsWith(arr[index]) && match(arr, s.substring(arr[index].length()), index + 1)) return true;
290 private static final JSFunction shExpMatch = new JSFunction() {
291 public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
292 StringTokenizer st = new StringTokenizer(args[1].toString(), "*", false);
293 String[] arr = new String[st.countTokens()];
294 String s = args[0].toString();
295 for (int i=0; st.hasMoreTokens(); i++) arr[i] = st.nextToken();
296 return match(arr, s, 0) ? Boolean.TRUE : Boolean.FALSE;
300 public static String[] days = { "SUN", "MON", "TUE", "WED", "THU", "FRI", "SAT" };
302 private static final JSFunction weekdayRange = new JSFunction() {
303 public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
304 TimeZone tz = (args.length < 3 || args[2] == null || !args[2].equals("GMT")) ? TimeZone.getTimeZone("UTC") : TimeZone.getDefault();
305 Calendar c = new GregorianCalendar();
307 c.setTime(new Date());
308 Date d = c.getTime();
309 int day = d.getDay();
311 String d1s = args[0].toString().toUpperCase();
313 for(int i=0; i<days.length; i++) if (days[i].equals(d1s)) d1 = i;
315 if (args.length == 1)
316 return d1 == day ? Boolean.TRUE : Boolean.FALSE;
318 String d2s = args[1].toString().toUpperCase();
319 for(int i=0; i<days.length; i++) if (days[i].equals(d2s)) d2 = i;
322 ((d1 <= d2 && day >= d1 && day <= d2) ||
323 (d1 > d2 && (day >= d1 || day <= d2))) ?
324 Boolean.TRUE : Boolean.FALSE;
328 private static final JSFunction dateRange = new JSFunction() {
329 public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
330 throw new JavaScriptException("XWT does not support dateRange() in PAC scripts");
334 private static final JSFunction timeRange = new JSFunction() {
335 public Object call(Context cx, Scriptable thisObj, Scriptable ctorObj, Object[] args) throws JavaScriptException {
336 throw new JavaScriptException("XWT does not support timeRange() in PAC scripts");