Add support for authorization of HTTP client requests

tests/standalone/io/http_auth_test.dart

+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#import("dart:crypto");
+#import("dart:io");
+#import("dart:uri");
+#import("dart:utf");
+
+class Server {
+  HttpServer server;
+  bool passwordChanged = false;
+
+  Server() : server = new HttpServer();
+
+  void start() {
+    server.listen("127.0.0.1", 0);
+    server.defaultRequestHandler =
+        (HttpRequest request, HttpResponse response) {
+          String username;
+          String password;
+          if (request.path == "/") {
+            username = "username";
+            password = "password";
+          } else {
+            username = request.path.substring(1, 6);
+            password = request.path.substring(1, 6);
+          }
+          if (passwordChanged) password = "${password}1";
+          if (request.headers[HttpHeaders.AUTHORIZATION] != null) {
+            Expect.equals(1, request.headers[HttpHeaders.AUTHORIZATION].length);
+            String authorization =
+              request.headers[HttpHeaders.AUTHORIZATION][0];
+            List<String> tokens = authorization.split(" ");
+            Expect.equals("Basic", tokens[0]);
+            String auth =
+                CryptoUtils.bytesToBase64(encodeUtf8("$username:$password"));
+            if (passwordChanged && auth != tokens[1]) {
+              response.statusCode = HttpStatus.UNAUTHORIZED;
+              response.headers.set(HttpHeaders.WWW_AUTHENTICATE,
+                                   "Basic, realm=realm");
+            } else {
+              Expect.equals(auth, tokens[1]);
+            }
+          } else {
+            response.statusCode = HttpStatus.UNAUTHORIZED;
+            response.headers.set(HttpHeaders.WWW_AUTHENTICATE,
+                                 "Basic, realm=realm");
+          }
+          response.outputStream.close();
+        };
+    server.addRequestHandler(
+        (HttpRequest request) => request.path == "/passwdchg",
+        (HttpRequest request, HttpResponse response) {
+          passwordChanged = true;
+          response.outputStream.close();
+        });
+  }
+
+  void shutdown() {
+    server.close();
+  }
+
+  int get port => server.port;
+}
+
+Server setupServer() {
+  Server server = new Server();
+  server.start();
+  return server;
+}
+
+void testUrlUserInfo() {
+  Server server = setupServer();
+  HttpClient client = new HttpClient();
+
+  HttpClientConnection conn =
+      client.getUrl(
+          new Uri.fromString(
+              "http://username:password@127.0.0.1:${server.port}/"));
+  conn.onResponse = (HttpClientResponse response) {
+    server.shutdown();
+    client.shutdown();
+  };
+}
+
+void testBasicNoCredentials() {
+  Server server = setupServer();
+  HttpClient client = new HttpClient();
+
+  Future makeRequest(Uri url) {
+    Completer completer = new Completer();
+    HttpClientConnection conn = client.getUrl(url);
+    conn.onResponse = (HttpClientResponse response) {
+      Expect.equals(HttpStatus.UNAUTHORIZED, response.statusCode);
+      completer.complete(null);
+    };
+    return completer.future;
+  }
+
+  var futures = [];
+  for (int i = 0; i < 5; i++) {
+    futures.add(
+        makeRequest(
+            new Uri.fromString("http://127.0.0.1:${server.port}/test$i")));
+    futures.add(
+        makeRequest(
+            new Uri.fromString("http://127.0.0.1:${server.port}/test$i/xxx")));
+  }
+  Futures.wait(futures).then((_) {
+    server.shutdown();
+    client.shutdown();
+  });
+}
+
+void testBasicCredentials() {
+  Server server = setupServer();
+  HttpClient client = new HttpClient();
+
+  Future makeRequest(Uri url) {
+    Completer completer = new Completer();
+    HttpClientConnection conn = client.getUrl(url);
+    conn.onResponse = (HttpClientResponse response) {
+      Expect.equals(HttpStatus.OK, response.statusCode);
+      completer.complete(null);
+    };
+    return completer.future;
+  }
+
+  for (int i = 0; i < 5; i++) {
+    client.addCredentials(
+        new Uri.fromString("http://127.0.0.1:${server.port}/test$i"),
+        "realm",
+        new HttpClientBasicCredentials("test$i", "test$i"));
+  }
+
+  var futures = [];
+  for (int i = 0; i < 5; i++) {
+    futures.add(
+        makeRequest(
+            new Uri.fromString("http://127.0.0.1:${server.port}/test$i")));
+    futures.add(
+        makeRequest(
+            new Uri.fromString("http://127.0.0.1:${server.port}/test$i/xxx")));
+  }
+  Futures.wait(futures).then((_) {
+    server.shutdown();
+    client.shutdown();
+  });
+}
+
+void testBasicAuthenticateCallback() {
+  Server server = setupServer();
+  HttpClient client = new HttpClient();
+  bool passwordChanged = false;
+
+  client.authenticate = bool (Uri url, String scheme, String realm) {
+    Expect.equals("Basic", scheme);
+    Expect.equals("realm", realm);
+    String username = url.path.substring(1, 6);
+    String password = url.path.substring(1, 6);
+    if (passwordChanged) password = "${password}1";
+    client.addCredentials(
+        url, realm, new HttpClientBasicCredentials(username, password));
+    return true;
+  };
+
+  Future makeRequest(Uri url) {
+    Completer completer = new Completer();
+    HttpClientConnection conn = client.getUrl(url);
+    conn.onResponse = (HttpClientResponse response) {
+      Expect.equals(HttpStatus.OK, response.statusCode);
+      completer.complete(null);
+    };
+    return completer.future;
+  }
+
+  List<Future> makeRequests() {
+    var futures = [];
+    for (int i = 0; i < 5; i++) {
+      futures.add(
+          makeRequest(
+              new Uri.fromString("http://127.0.0.1:${server.port}/test$i")));
+      futures.add(
+          makeRequest(
+              new Uri.fromString(
+                  "http://127.0.0.1:${server.port}/test$i/xxx")));
+    }
+    return futures;
+  }
+
+  Futures.wait(makeRequests()).then((_) {
+    makeRequest(
+        new Uri.fromString(
+            "http://127.0.0.1:${server.port}/passwdchg")).then((_) {
+      passwordChanged = true;
+      Futures.wait(makeRequests()).then((_) {
+        server.shutdown();
+        client.shutdown();
+      });
+    });
+  });
+}
+
+void testLocalServerBasic() {
+  HttpClient client = new HttpClient();
+
+  client.authenticate = (Uri url, String scheme, String realm) {
+    client.addCredentials(
+        new Uri.fromString("http://127.0.0.1/basic"),
+        "test",
+        new HttpClientBasicCredentials("test", "test"));
+    return true;
+  };
+
+  HttpClientConnection conn =
+      client.getUrl(new Uri.fromString("http://127.0.0.1/basic/test"));
+  conn.onResponse = (HttpClientResponse response) {
+    Expect.equals(HttpStatus.OK, response.statusCode);
+    response.inputStream.onData = () => response.inputStream.read();
+    response.inputStream.onClosed = () {
+      client.shutdown();
+    };
+  };
+}
+
+void testLocalServerDigest() {
+  HttpClient client = new HttpClient();
+
+  client.authenticate = (Uri url, String scheme, String realm) {
+    print("url: $url, scheme: $scheme, realm: $realm");
+    client.addCredentials(
+        new Uri.fromString("http://127.0.0.1/digest"),
+        "test",
+        new HttpClientDigestCredentials("test", "test"));
+    return true;
+  };
+
+  HttpClientConnection conn =
+      client.getUrl(new Uri.fromString("http://127.0.0.1/digest/test"));
+  conn.onResponse = (HttpClientResponse response) {
+    Expect.equals(HttpStatus.OK, response.statusCode);
+    response.inputStream.onData = () => response.inputStream.read();
+    response.inputStream.onClosed = () {
+      client.shutdown();
+    };
+  };
+}
+
+main() {
+  testUrlUserInfo();
+  testBasicNoCredentials();
+  testBasicCredentials();
+  testBasicAuthenticateCallback();
+  // These teste are not normally run. They can be used for locally
+  // testing with another web server (e.g. Apache).
+  //testLocalServerBasic();
+  //testLocalServerDigest();
+}