This ensures no illegal cookies are send to okhttp

Summary:
When a website in a ReactNative WebView sets a cookie with an illegal
character, this cookie will automatically be added to any request to the
same domain.

This happens through:
BridgeInterceptor.java (l.84)
ReactCookieJarContainer.java (l.44)
JavaNetCookieJar.java (l.59)
ForwardingCookieHandler.java (l.57)
ForwardingCookieHandler.java (l.168)
CookieManager.java (l.39)

The BridgeInterceptor.java then tries to set a Cookie header, which
validates both keys and values, and then crashes.
okhttp3.6.0 Headers.java (l.320)

This fix will strip illegal characters from any cookie that is being
passed to the okhttp request.

To demonstrate how to crash the app, you can find an example app here:
https://github.com/erikpoort/react-native-test-illegal-cookie

Or you can load the following url into a webview: https://invalidcookietest.us.dev.monkapps.com/
Press the 'Set cookie' button.
Then try to fetch the same url.

[ANDROID] [BREAKING] [ReactCookieJarContainer.java] - I'm filtering cookies containing illegal characters from any request.
Closes #18203

Differential Revision: D8164302

Pulled By: hramos

fbshipit-source-id: 6e58461df594eb2c7aad4c7ad70b76d12ac09b84

ReactAndroid/src/main/java/com/facebook/react/modules/network/ReactCookieJarContainer.java

@@ -1,12 +1,14 @@
 package com.facebook.react.modules.network;
 
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 
 import javax.annotation.Nullable;
 
 import okhttp3.Cookie;
 import okhttp3.CookieJar;
+import okhttp3.Headers;
 import okhttp3.HttpUrl;
 
 /**
@@ -37,7 +39,17 @@ public void saveFromResponse(HttpUrl url, List<Cookie> cookies) {
   @Override
   public List<Cookie> loadForRequest(HttpUrl url) {
     if (cookieJar != null) {
-      return cookieJar.loadForRequest(url);
+      List<Cookie> cookies = cookieJar.loadForRequest(url);
+      ArrayList<Cookie> validatedCookies = new ArrayList<>();
+      for (Cookie cookie : cookies) {
+        try {
+          Headers.Builder cookieChecker = new Headers.Builder();
+          cookieChecker.add(cookie.name(), cookie.value());
+          validatedCookies.add(cookie);
+        } catch (IllegalArgumentException ignored) {
+        }
+      }
+      return validatedCookies;
     }
     return Collections.emptyList();
   }

ReactAndroid/src/test/java/com/facebook/react/modules/network/ReactCookieJarContainerTest.java

@@ -0,0 +1,85 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.modules.network;
+
+import com.facebook.react.modules.network.ReactCookieJarContainer;
+import okhttp3.Cookie;
+import okhttp3.CookieJar;
+import okhttp3.HttpUrl;
+import java.util.List;
+import java.util.ArrayList;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.powermock.core.classloader.annotations.PowerMockIgnore;
+import org.powermock.core.classloader.annotations.PrepareForTest;
+import org.robolectric.RobolectricTestRunner;
+
+import static org.fest.assertions.api.Assertions.assertThat;
+import static org.mockito.Mockito.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+/**
+ * Tests for {@link NetworkingModule}.
+ */
+@PrepareForTest({
+  ReactCookieJarContainer.class
+})
+@RunWith(RobolectricTestRunner.class)
+@PowerMockIgnore({"org.mockito.*", "org.robolectric.*", "android.*"})
+
+public class ReactCookieJarContainerTest {
+
+  @Test
+  public void testMissingJar() throws Exception {
+    ReactCookieJarContainer jarContainer = mock(ReactCookieJarContainer.class);
+    assertThat(jarContainer.loadForRequest(any(HttpUrl.class)).size()).isEqualTo(0);
+  }
+
+  @Test
+  public void testEmptyCookies() throws Exception {
+    ReactCookieJarContainer jarContainer = mock(ReactCookieJarContainer.class);
+    List<Cookie> cookies = new ArrayList<>();
+    when(jarContainer.loadForRequest(any(HttpUrl.class))).thenReturn(cookies);
+    assertThat(jarContainer.loadForRequest(any(HttpUrl.class)).size()).isEqualTo(0);
+  }
+
+  @Test
+  public void testValidCookies() throws Exception {
+    ReactCookieJarContainer jarContainer = new ReactCookieJarContainer();
+    CookieJar cookieJar = mock(CookieJar.class);
+    jarContainer.setCookieJar(cookieJar);
+    List<Cookie> cookies = new ArrayList<>();
+    cookies.add(new Cookie.Builder()
+      .name("valid")
+      .value("valid value")
+      .domain("domain")
+      .build()
+    );
+    when(cookieJar.loadForRequest(any(HttpUrl.class))).thenReturn(cookies);
+    assertThat(jarContainer.loadForRequest(any(HttpUrl.class)).size()).isEqualTo(1);
+  }
+
+  @Test
+  public void testInvalidCookies() throws Exception {
+    ReactCookieJarContainer jarContainer = new ReactCookieJarContainer();
+    CookieJar cookieJar = mock(CookieJar.class);
+    jarContainer.setCookieJar(cookieJar);
+    List<Cookie> cookies = new ArrayList<>();
+    cookies.add(new Cookie.Builder()
+      .name("valid")
+      .value("înválíd välūė")
+      .domain("domain")
+      .build()
+    );
+    when(cookieJar.loadForRequest(any(HttpUrl.class))).thenReturn(cookies);
+    assertThat(jarContainer.loadForRequest(any(HttpUrl.class)).size()).isEqualTo(0);
+  }
+}