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/*
 * Copyright (C) 2010 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package okhttp3;

import java.io.IOException;
import java.net.CookieHandler;
import java.net.CookieManager;
import java.net.HttpCookie;
import java.net.HttpURLConnection;
import java.net.InetAddress;
import java.net.URI;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import mockwebserver3.MockResponse;
import mockwebserver3.MockWebServer;
import mockwebserver3.RecordedRequest;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.Timeout;
import org.junit.jupiter.api.extension.RegisterExtension;

import static java.net.CookiePolicy.ACCEPT_ORIGINAL_SERVER;
import static java.util.Arrays.asList;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.data.Offset.offset;
import static org.junit.jupiter.api.Assertions.fail;

/** Derived from Android's CookiesTest. */
@Timeout(30)
public class CookiesTest {
  @RegisterExtension public final OkHttpClientTestRule clientTestRule = new OkHttpClientTestRule();

  private MockWebServer server;
  private OkHttpClient client = clientTestRule.newClient();

  @BeforeEach
  public void setUp(MockWebServer server) throws Exception {
    this.server = server;
  }

  @Test
  public void testNetscapeResponse() throws Exception {
    CookieManager cookieManager = new CookieManager(null, ACCEPT_ORIGINAL_SERVER);
    client = client.newBuilder()
        .cookieJar(new JavaNetCookieJar(cookieManager))
        .build();

    HttpUrl urlWithIpAddress = urlWithIpAddress(server, "/path/foo");
    server.enqueue(new MockResponse().addHeader("Set-Cookie: a=android; "
        + "expires=Fri, 31-Dec-9999 23:59:59 GMT; "
        + "path=/path; "
        + "domain=" + urlWithIpAddress.host() + "; "
        + "secure"));
    get(urlWithIpAddress);

    List cookies = cookieManager.getCookieStore().getCookies();
    assertThat(cookies.size()).isEqualTo(1);
    HttpCookie cookie = cookies.get(0);
    assertThat(cookie.getName()).isEqualTo("a");
    assertThat(cookie.getValue()).isEqualTo("android");
    assertThat(cookie.getComment()).isNull();
    assertThat(cookie.getCommentURL()).isNull();
    assertThat(cookie.getDiscard()).isFalse();
    assertThat(cookie.getMaxAge()).isGreaterThan(100000000000L);
    assertThat(cookie.getPath()).isEqualTo("/path");
    assertThat(cookie.getSecure()).isTrue();
    assertThat(cookie.getVersion()).isEqualTo(0);
  }

  @Test public void testRfc2109Response() throws Exception {
    CookieManager cookieManager = new CookieManager(null, ACCEPT_ORIGINAL_SERVER);
    client = client.newBuilder()
        .cookieJar(new JavaNetCookieJar(cookieManager))
        .build();

    HttpUrl urlWithIpAddress = urlWithIpAddress(server, "/path/foo");
    server.enqueue(new MockResponse().addHeader("Set-Cookie: a=android; "
        + "Comment=this cookie is delicious; "
        + "Domain=" + urlWithIpAddress.host() + "; "
        + "Max-Age=60; "
        + "Path=/path; "
        + "Secure; "
        + "Version=1"));
    get(urlWithIpAddress);

    List cookies = cookieManager.getCookieStore().getCookies();
    assertThat(cookies.size()).isEqualTo(1);
    HttpCookie cookie = cookies.get(0);
    assertThat(cookie.getName()).isEqualTo("a");
    assertThat(cookie.getValue()).isEqualTo("android");
    assertThat(cookie.getCommentURL()).isNull();
    assertThat(cookie.getDiscard()).isFalse();
    // Converting to a fixed date can cause rounding!
    assertThat((double) cookie.getMaxAge()).isCloseTo(60.0, offset(5.0));
    assertThat(cookie.getPath()).isEqualTo("/path");
    assertThat(cookie.getSecure()).isTrue();
  }

  @Test public void testQuotedAttributeValues() throws Exception {
    CookieManager cookieManager = new CookieManager(null, ACCEPT_ORIGINAL_SERVER);
    client = client.newBuilder()
        .cookieJar(new JavaNetCookieJar(cookieManager))
        .build();

    HttpUrl urlWithIpAddress = urlWithIpAddress(server, "/path/foo");
    server.enqueue(new MockResponse().addHeader("Set-Cookie: a=\"android\"; "
        + "Comment=\"this cookie is delicious\"; "
        + "CommentURL=\"http://google.com/\"; "
        + "Discard; "
        + "Domain=" + urlWithIpAddress.host() + "; "
        + "Max-Age=60; "
        + "Path=\"/path\"; "
        + "Port=\"80,443," + server.getPort() + "\"; "
        + "Secure; "
        + "Version=\"1\""));
    get(urlWithIpAddress);

    List cookies = cookieManager.getCookieStore().getCookies();
    assertThat(cookies.size()).isEqualTo(1);
    HttpCookie cookie = cookies.get(0);
    assertThat(cookie.getName()).isEqualTo("a");
    assertThat(cookie.getValue()).isEqualTo("android");
    // Converting to a fixed date can cause rounding!
    assertThat((double) cookie.getMaxAge()).isCloseTo(60.0, offset(1.0));
    assertThat(cookie.getPath()).isEqualTo("/path");
    assertThat(cookie.getSecure()).isTrue();
  }

  @Test public void testSendingCookiesFromStore() throws Exception {
    server.enqueue(new MockResponse());
    HttpUrl serverUrl = urlWithIpAddress(server, "/");

    CookieManager cookieManager = new CookieManager(null, ACCEPT_ORIGINAL_SERVER);
    HttpCookie cookieA = new HttpCookie("a", "android");
    cookieA.setDomain(serverUrl.host());
    cookieA.setPath("/");
    cookieManager.getCookieStore().add(serverUrl.uri(), cookieA);
    HttpCookie cookieB = new HttpCookie("b", "banana");
    cookieB.setDomain(serverUrl.host());
    cookieB.setPath("/");
    cookieManager.getCookieStore().add(serverUrl.uri(), cookieB);
    client = client.newBuilder()
        .cookieJar(new JavaNetCookieJar(cookieManager))
        .build();

    get(serverUrl);
    RecordedRequest request = server.takeRequest();

    assertThat(request.getHeader("Cookie")).isEqualTo("a=android; b=banana");
  }

  @Test public void cookieHandlerLikeAndroid() throws Exception {
    server.enqueue(new MockResponse());
    final HttpUrl serverUrl = urlWithIpAddress(server, "/");

    CookieHandler androidCookieHandler = new CookieHandler() {
      @Override public Map> get(URI uri, Map> map) {
        return Collections.singletonMap("Cookie", Collections.singletonList("$Version=\"1\"; "
            + "a=\"android\";$Path=\"/\";$Domain=\"" + serverUrl.host() + "\"; "
            + "b=\"banana\";$Path=\"/\";$Domain=\"" + serverUrl.host() + "\""));
      }

      @Override public void put(URI uri, Map> map) throws IOException {
      }
    };

    client = client.newBuilder()
        .cookieJar(new JavaNetCookieJar(androidCookieHandler))
        .build();

    get(serverUrl);
    RecordedRequest request = server.takeRequest();

    assertThat(request.getHeader("Cookie")).isEqualTo("a=android; b=banana");
  }

  @Test public void receiveAndSendMultipleCookies() throws Exception {
    server.enqueue(new MockResponse()
        .addHeader("Set-Cookie", "a=android")
        .addHeader("Set-Cookie", "b=banana"));
    server.enqueue(new MockResponse());

    CookieManager cookieManager = new CookieManager(null, ACCEPT_ORIGINAL_SERVER);
    client = client.newBuilder()
        .cookieJar(new JavaNetCookieJar(cookieManager))
        .build();

    get(urlWithIpAddress(server, "/"));
    RecordedRequest request1 = server.takeRequest();
    assertThat(request1.getHeader("Cookie")).isNull();

    get(urlWithIpAddress(server, "/"));
    RecordedRequest request2 = server.takeRequest();
    assertThat(request2.getHeader("Cookie")).isEqualTo("a=android; b=banana");
  }

  @Test public void testRedirectsDoNotIncludeTooManyCookies() throws Exception {
    MockWebServer redirectTarget = new MockWebServer();
    redirectTarget.enqueue(new MockResponse().setBody("A"));
    redirectTarget.start();
    HttpUrl redirectTargetUrl = urlWithIpAddress(redirectTarget, "/");

    MockWebServer redirectSource = new MockWebServer();
    redirectSource.enqueue(new MockResponse()
        .setResponseCode(HttpURLConnection.HTTP_MOVED_TEMP)
        .addHeader("Location: " + redirectTargetUrl));
    redirectSource.start();
    HttpUrl redirectSourceUrl = urlWithIpAddress(redirectSource, "/");

    CookieManager cookieManager = new CookieManager(null, ACCEPT_ORIGINAL_SERVER);
    HttpCookie cookie = new HttpCookie("c", "cookie");
    cookie.setDomain(redirectSourceUrl.host());
    cookie.setPath("/");
    String portList = Integer.toString(redirectSource.getPort());
    cookie.setPortlist(portList);
    cookieManager.getCookieStore().add(redirectSourceUrl.uri(), cookie);
    client = client.newBuilder()
        .cookieJar(new JavaNetCookieJar(cookieManager))
        .build();

    get(redirectSourceUrl);
    RecordedRequest request = redirectSource.takeRequest();

    assertThat(request.getHeader("Cookie")).isEqualTo("c=cookie");

    for (String header : redirectTarget.takeRequest().getHeaders().names()) {
      if (header.startsWith("Cookie")) {
        fail(header);
      }
    }
  }

  @Test public void testCookiesSentIgnoresCase() throws Exception {
    client = client.newBuilder()
        .cookieJar(new JavaNetCookieJar(new CookieManager() {
          @Override public Map> get(URI uri,
              Map> requestHeaders) {
            Map> result = new LinkedHashMap<>();
            result.put("COOKIE", Collections.singletonList("Bar=bar"));
            result.put("cooKIE2", Collections.singletonList("Baz=baz"));
            return result;
          }
        }))
        .build();

    server.enqueue(new MockResponse());

    get(server.url("/"));

    RecordedRequest request = server.takeRequest();
    assertThat(request.getHeader("Cookie")).isEqualTo("Bar=bar; Baz=baz");
    assertThat(request.getHeader("Cookie2")).isNull();
    assertThat(request.getHeader("Quux")).isNull();
  }

  @Test public void acceptOriginalServerMatchesSubdomain() throws Exception {
    CookieManager cookieManager = new CookieManager(null, ACCEPT_ORIGINAL_SERVER);
    JavaNetCookieJar cookieJar = new JavaNetCookieJar(cookieManager);

    HttpUrl url = HttpUrl.get("https://www.squareup.com/");
    cookieJar.saveFromResponse(url, asList(
        Cookie.parse(url, "a=android; Domain=squareup.com")));
    List actualCookies = cookieJar.loadForRequest(url);
    assertThat(actualCookies.size()).isEqualTo(1);
    assertThat(actualCookies.get(0).name()).isEqualTo("a");
    assertThat(actualCookies.get(0).value()).isEqualTo("android");
  }

  @Test public void acceptOriginalServerMatchesRfc2965Dot() throws Exception {
    CookieManager cookieManager = new CookieManager(null, ACCEPT_ORIGINAL_SERVER);
    JavaNetCookieJar cookieJar = new JavaNetCookieJar(cookieManager);

    HttpUrl url = HttpUrl.get("https://www.squareup.com/");
    cookieJar.saveFromResponse(url, asList(
        Cookie.parse(url, "a=android; Domain=.squareup.com")));
    List actualCookies = cookieJar.loadForRequest(url);
    assertThat(actualCookies.size()).isEqualTo(1);
    assertThat(actualCookies.get(0).name()).isEqualTo("a");
    assertThat(actualCookies.get(0).value()).isEqualTo("android");
  }

  @Test public void acceptOriginalServerMatchesExactly() throws Exception {
    CookieManager cookieManager = new CookieManager(null, ACCEPT_ORIGINAL_SERVER);
    JavaNetCookieJar cookieJar = new JavaNetCookieJar(cookieManager);

    HttpUrl url = HttpUrl.get("https://squareup.com/");
    cookieJar.saveFromResponse(url, asList(
        Cookie.parse(url, "a=android; Domain=squareup.com")));
    List actualCookies = cookieJar.loadForRequest(url);
    assertThat(actualCookies.size()).isEqualTo(1);
    assertThat(actualCookies.get(0).name()).isEqualTo("a");
    assertThat(actualCookies.get(0).value()).isEqualTo("android");
  }

  @Test public void acceptOriginalServerDoesNotMatchDifferentServer() throws Exception {
    CookieManager cookieManager = new CookieManager(null, ACCEPT_ORIGINAL_SERVER);
    JavaNetCookieJar cookieJar = new JavaNetCookieJar(cookieManager);

    HttpUrl url1 = HttpUrl.get("https://api.squareup.com/");
    cookieJar.saveFromResponse(url1, asList(
        Cookie.parse(url1, "a=android; Domain=api.squareup.com")));

    HttpUrl url2 = HttpUrl.get("https://www.squareup.com/");
    List actualCookies = cookieJar.loadForRequest(url2);
    assertThat(actualCookies).isEmpty();
  }

  @Test public void testQuoteStripping() throws Exception {
    client = client.newBuilder()
            .cookieJar(new JavaNetCookieJar(new CookieManager() {
              @Override public Map> get(URI uri,
                                                             Map> requestHeaders) {
                Map> result = new LinkedHashMap<>();
                result.put("COOKIE", Collections.singletonList("Bar=\""));
                result.put("cooKIE2", Collections.singletonList("Baz=\"baz\""));
                return result;
              }
            }))
            .build();

    server.enqueue(new MockResponse());

    get(server.url("/"));

    RecordedRequest request = server.takeRequest();
    assertThat(request.getHeader("Cookie")).isEqualTo("Bar=\"; Baz=baz");
    assertThat(request.getHeader("Cookie2")).isNull();
    assertThat(request.getHeader("Quux")).isNull();
  }

  private HttpUrl urlWithIpAddress(MockWebServer server, String path) throws Exception {
    return server.url(path)
        .newBuilder()
        .host(InetAddress.getByName(server.getHostName()).getHostAddress())
        .build();
  }

  private void get(HttpUrl url) throws Exception {
    Call call = client.newCall(new Request.Builder()
        .url(url)
        .build());
    Response response = call.execute();
    response.body().close();
  }
}




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