third_party/blink/renderer/core/frame/frame_serializer_test.cc

/*
 * Copyright (c) 2013, Opera Software ASA. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
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 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of Opera Software ASA nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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#include "third_party/blink/renderer/core/frame/frame_serializer.h"

#include <string>
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/public/platform/web_url.h"
#include "third_party/blink/public/platform/web_url_loader_mock_factory.h"
#include "third_party/blink/public/platform/web_url_request.h"
#include "third_party/blink/public/platform/web_url_response.h"
#include "third_party/blink/public/web/web_settings.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_binding_for_core.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_binding_for_testing.h"
#include "third_party/blink/renderer/core/dom/element.h"
#include "third_party/blink/renderer/core/exported/web_view_impl.h"
#include "third_party/blink/renderer/core/frame/frame_test_helpers.h"
#include "third_party/blink/renderer/core/frame/web_local_frame_impl.h"
#include "third_party/blink/renderer/platform/loader/fetch/resource_error.h"
#include "third_party/blink/renderer/platform/scheduler/public/thread.h"
#include "third_party/blink/renderer/platform/serialized_resource.h"
#include "third_party/blink/renderer/platform/testing/testing_platform_support.h"
#include "third_party/blink/renderer/platform/testing/unit_test_helpers.h"
#include "third_party/blink/renderer/platform/testing/url_test_helpers.h"
#include "third_party/blink/renderer/platform/wtf/assertions.h"
#include "third_party/blink/renderer/platform/wtf/deque.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"

namespace blink {

class FrameSerializerTest : public testing::Test,
                            public FrameSerializer::Delegate {
 public:
  FrameSerializerTest()
      : folder_("frameserializer/"),
        base_url_(url_test_helpers::ToKURL("http://www.test.com")) {}

 protected:
  void SetUp() override {
    // We want the images to load.
    helper_.InitializeWithSettings(&ConfigureSettings);
  }

  void TearDown() override {
    platform_->GetURLLoaderMockFactory()
        ->UnregisterAllURLsAndClearMemoryCache();
  }

  void SetBaseFolder(const char* folder) { folder_ = folder; }

  void SetRewriteURLFolder(const char* folder) { rewrite_folder_ = folder; }

  void RegisterURL(const KURL& url, const char* file, const char* mime_type) {
    url_test_helpers::RegisterMockedURLLoad(
        url, test::CoreTestDataPath(WebString::FromUTF8(folder_ + file)),
        WebString::FromUTF8(mime_type));
  }

  void RegisterURL(const char* url, const char* file, const char* mime_type) {
    RegisterURL(KURL(base_url_, url), file, mime_type);
  }

  void RegisterURL(const char* file, const char* mime_type) {
    RegisterURL(file, file, mime_type);
  }

  void RegisterErrorURL(const char* file, int status_code) {
    ResourceError error = ResourceError::Failure(NullURL());

    WebURLResponse response;
    response.SetMIMEType("text/html");
    response.SetHTTPStatusCode(status_code);

    platform_->GetURLLoaderMockFactory()->RegisterErrorURL(
        KURL(base_url_, file), response, error);
  }

  void RegisterRewriteURL(const char* from_url, const char* to_url) {
    rewrite_urls_.insert(from_url, to_url);
  }

  void RegisterSkipURL(const char* url) {
    skip_urls_.push_back(KURL(base_url_, url));
  }

  void Serialize(const char* url) {
    frame_test_helpers::LoadFrame(
        helper_.GetWebView()->MainFrameImpl(),
        KURL(base_url_, url).GetString().Utf8().data());
    // Sometimes we have iframes created in "onload" handler - wait for them to
    // load.
    frame_test_helpers::PumpPendingRequestsForFrameToLoad(
        helper_.GetWebView()->MainFrameImpl());
    FrameSerializer serializer(resources_, *this);
    Frame* frame = helper_.LocalMainFrame()->GetFrame();
    for (; frame; frame = frame->Tree().TraverseNext()) {
      // This is safe, because tests do not do cross-site navigation
      // (and therefore don't have remote frames).
      serializer.SerializeFrame(*ToLocalFrame(frame));
    }
  }

  Deque<SerializedResource>& GetResources() { return resources_; }

  const SerializedResource* GetResource(const KURL& url,
                                        const char* mime_type) {
    String mime(mime_type);
    for (const SerializedResource& resource : resources_) {
      if (resource.url == url && !resource.data->IsEmpty() &&
          (mime.IsNull() || EqualIgnoringASCIICase(resource.mime_type, mime)))
        return &resource;
    }
    return nullptr;
  }

  const SerializedResource* GetResource(const char* url_string,
                                        const char* mime_type) {
    const KURL url(base_url_, url_string);
    return GetResource(url, mime_type);
  }

  bool IsSerialized(const char* url, const char* mime_type = nullptr) {
    return GetResource(url, mime_type);
  }

  String GetSerializedData(const char* url, const char* mime_type = nullptr) {
    const SerializedResource* resource = GetResource(url, mime_type);
    if (resource) {
      const Vector<char> data = resource->data->CopyAs<Vector<char>>();
      return String(data.data(), data.size());
    }
    return String();
  }

 private:
  static void ConfigureSettings(WebSettings* settings) {
    settings->SetImagesEnabled(true);
    settings->SetLoadsImagesAutomatically(true);
    settings->SetJavaScriptEnabled(true);
  }

  // FrameSerializer::Delegate implementation.
  bool RewriteLink(const Element& element, String& rewritten_link) override {
    String complete_url;
    for (const auto& attribute : element.Attributes()) {
      if (element.HasLegalLinkAttribute(attribute.GetName())) {
        complete_url = element.GetDocument().CompleteURL(attribute.Value());
        break;
      }
    }

    if (complete_url.IsNull() || !rewrite_urls_.Contains(complete_url))
      return false;

    StringBuilder uri_builder;
    uri_builder.Append(rewrite_folder_);
    uri_builder.Append('/');
    uri_builder.Append(rewrite_urls_.at(complete_url));
    rewritten_link = uri_builder.ToString();
    return true;
  }

  bool ShouldSkipResourceWithURL(const KURL& url) override {
    return skip_urls_.Contains(url);
  }

  frame_test_helpers::WebViewHelper helper_;
  std::string folder_;
  KURL base_url_;
  Deque<SerializedResource> resources_;
  HashMap<String, String> rewrite_urls_;
  Vector<String> skip_urls_;
  String rewrite_folder_;
  ScopedTestingPlatformSupport<TestingPlatformSupport> platform_;
};

TEST_F(FrameSerializerTest, HTMLElements) {
  SetBaseFolder("frameserializer/elements/");

  RegisterURL("elements.html", "text/html");
  RegisterURL("style.css", "style.css", "text/css");
  RegisterURL("copyright.html", "empty.txt", "text/html");
  RegisterURL("script.js", "empty.txt", "text/javascript");

  RegisterURL("bodyBackground.png", "image.png", "image/png");

  RegisterURL("imageSrc.png", "image.png", "image/png");

  RegisterURL("inputImage.png", "image.png", "image/png");

  RegisterURL("tableBackground.png", "image.png", "image/png");
  RegisterURL("trBackground.png", "image.png", "image/png");
  RegisterURL("tdBackground.png", "image.png", "image/png");

  RegisterURL("blockquoteCite.html", "empty.txt", "text/html");
  RegisterURL("qCite.html", "empty.txt", "text/html");
  RegisterURL("delCite.html", "empty.txt", "text/html");
  RegisterURL("insCite.html", "empty.txt", "text/html");

  RegisterErrorURL("nonExisting.png", 404);

  Serialize("elements.html");

  EXPECT_EQ(8U, GetResources().size());

  EXPECT_TRUE(IsSerialized("elements.html", "text/html"));
  EXPECT_TRUE(IsSerialized("style.css", "text/css"));
  EXPECT_TRUE(IsSerialized("bodyBackground.png", "image/png"));
  EXPECT_TRUE(IsSerialized("imageSrc.png", "image/png"));
  EXPECT_TRUE(IsSerialized("inputImage.png", "image/png"));
  EXPECT_TRUE(IsSerialized("tableBackground.png", "image/png"));
  EXPECT_TRUE(IsSerialized("trBackground.png", "image/png"));
  EXPECT_TRUE(IsSerialized("tdBackground.png", "image/png"));
  EXPECT_FALSE(IsSerialized("nonExisting.png", "image/png"));
}

TEST_F(FrameSerializerTest, Frames) {
  SetBaseFolder("frameserializer/frames/");

  RegisterURL("simple_frames.html", "text/html");
  RegisterURL("simple_frames_top.html", "text/html");
  RegisterURL("simple_frames_1.html", "text/html");
  RegisterURL("simple_frames_3.html", "text/html");

  RegisterURL("frame_1.png", "image.png", "image/png");
  RegisterURL("frame_2.png", "image.png", "image/png");
  RegisterURL("frame_3.png", "image.png", "image/png");
  RegisterURL("frame_4.png", "image.png", "image/png");

  Serialize("simple_frames.html");

  EXPECT_EQ(8U, GetResources().size());

  EXPECT_TRUE(IsSerialized("simple_frames.html", "text/html"));
  EXPECT_TRUE(IsSerialized("simple_frames_top.html", "text/html"));
  EXPECT_TRUE(IsSerialized("simple_frames_1.html", "text/html"));
  EXPECT_TRUE(IsSerialized("simple_frames_3.html", "text/html"));

  EXPECT_TRUE(IsSerialized("frame_1.png", "image/png"));
  EXPECT_TRUE(IsSerialized("frame_2.png", "image/png"));
  EXPECT_TRUE(IsSerialized("frame_3.png", "image/png"));
  EXPECT_TRUE(IsSerialized("frame_4.png", "image/png"));
}

TEST_F(FrameSerializerTest, IFrames) {
  SetBaseFolder("frameserializer/frames/");

  RegisterURL("top_frame.html", "text/html");
  RegisterURL("simple_iframe.html", "text/html");
  RegisterURL("object_iframe.html", "text/html");
  RegisterURL("embed_iframe.html", "text/html");
  RegisterURL("encoded_iframe.html", "text/html");

  RegisterURL("top.png", "image.png", "image/png");
  RegisterURL("simple.png", "image.png", "image/png");
  RegisterURL("object.png", "image.png", "image/png");
  RegisterURL("embed.png", "image.png", "image/png");

  Serialize("top_frame.html");

  EXPECT_EQ(10U, GetResources().size());

  EXPECT_TRUE(IsSerialized("top_frame.html", "text/html"));
  EXPECT_TRUE(IsSerialized("simple_iframe.html", "text/html"));  // Twice.
  EXPECT_TRUE(IsSerialized("object_iframe.html", "text/html"));
  EXPECT_TRUE(IsSerialized("embed_iframe.html", "text/html"));
  EXPECT_TRUE(IsSerialized("encoded_iframe.html", "text/html"));

  EXPECT_TRUE(IsSerialized("top.png", "image/png"));
  EXPECT_TRUE(IsSerialized("simple.png", "image/png"));
  EXPECT_TRUE(IsSerialized("object.png", "image/png"));
  EXPECT_TRUE(IsSerialized("embed.png", "image/png"));

  // Ensure that frame contents are not NFC-normalized before encoding.
  String expected_meta_charset =
      "<meta http-equiv=\"Content-Type\" content=\"text/html; "
      "charset=EUC-KR\">";
  EXPECT_TRUE(GetSerializedData("encoded_iframe.html", "text/html")
                  .Contains(expected_meta_charset));
  EXPECT_TRUE(GetSerializedData("encoded_iframe.html", "text/html")
                  .Contains("\xE4\xC5\xD1\xE2"));
  EXPECT_FALSE(GetSerializedData("encoded_iframe.html", "text/html")
                   .Contains("\xE4\xC5\xE4\xC5"));
}

// Tests that when serializing a page with blank frames these are reported with
// their resources.
TEST_F(FrameSerializerTest, BlankFrames) {
  SetBaseFolder("frameserializer/frames/");

  RegisterURL("blank_frames.html", "text/html");
  RegisterURL("red_background.png", "image.png", "image/png");
  RegisterURL("orange_background.png", "image.png", "image/png");
  RegisterURL("blue_background.png", "image.png", "image/png");

  Serialize("blank_frames.html");

  EXPECT_EQ(7U, GetResources().size());

  EXPECT_TRUE(
      IsSerialized("http://www.test.com/red_background.png", "image/png"));
  EXPECT_TRUE(
      IsSerialized("http://www.test.com/orange_background.png", "image/png"));
  EXPECT_TRUE(
      IsSerialized("http://www.test.com/blue_background.png", "image/png"));

  // The blank frames no longer get magic URL (i.e. wyciwyg://frame/0), so we
  // can't really assert their presence via URL.  We also can't use content-id
  // in assertions (since it is not deterministic).  Therefore we need to rely
  // on getResources().size() assertion above and on browser-level tests
  // (i.e. SavePageMultiFrameBrowserTest.AboutBlank).
}

TEST_F(FrameSerializerTest, CSS) {
  SetBaseFolder("frameserializer/css/");

  RegisterURL("css_test_page.html", "text/html");
  RegisterURL("link_styles.css", "text/css");
  RegisterURL("encoding.css", "text/css");
  RegisterURL("import_style_from_link.css", "text/css");
  RegisterURL("import_styles.css", "text/css");
  RegisterURL("do_not_serialize.png", "image.png", "image/png");
  RegisterURL("red_background.png", "image.png", "image/png");
  RegisterURL("orange_background.png", "image.png", "image/png");
  RegisterURL("yellow_background.png", "image.png", "image/png");
  RegisterURL("green_background.png", "image.png", "image/png");
  RegisterURL("blue_background.png", "image.png", "image/png");
  RegisterURL("purple_background.png", "image.png", "image/png");
  RegisterURL("pink_background.png", "image.png", "image/png");
  RegisterURL("brown_background.png", "image.png", "image/png");
  RegisterURL("ul-dot.png", "image.png", "image/png");
  RegisterURL("ol-dot.png", "image.png", "image/png");

  const KURL image_url_from_data_url(
      url_test_helpers::ToKURL("http://www.dataurl.com"),
      "fuchsia_background.png");
  RegisterURL(image_url_from_data_url, "image.png", "image/png");

  RegisterURL("included_in_another_frame.css", "text/css");
  RegisterSkipURL("included_in_another_frame.css");

  Serialize("css_test_page.html");

  EXPECT_EQ(16U, GetResources().size());

  EXPECT_FALSE(IsSerialized("do_not_serialize.png", "image/png"));
  EXPECT_FALSE(IsSerialized("included_in_another_frame.css", "text/css"));

  EXPECT_TRUE(IsSerialized("css_test_page.html", "text/html"));
  EXPECT_TRUE(IsSerialized("link_styles.css", "text/css"));
  EXPECT_TRUE(IsSerialized("encoding.css", "text/css"));
  EXPECT_TRUE(IsSerialized("import_styles.css", "text/css"));
  EXPECT_TRUE(IsSerialized("import_style_from_link.css", "text/css"));
  EXPECT_TRUE(IsSerialized("red_background.png", "image/png"));
  EXPECT_TRUE(IsSerialized("orange_background.png", "image/png"));
  EXPECT_TRUE(IsSerialized("yellow_background.png", "image/png"));
  EXPECT_TRUE(IsSerialized("green_background.png", "image/png"));
  EXPECT_TRUE(IsSerialized("blue_background.png", "image/png"));
  EXPECT_TRUE(IsSerialized("purple_background.png", "image/png"));
  EXPECT_TRUE(IsSerialized("pink_background.png", "image/png"));
  EXPECT_TRUE(IsSerialized("brown_background.png", "image/png"));
  EXPECT_TRUE(IsSerialized("ul-dot.png", "image/png"));
  EXPECT_TRUE(IsSerialized("ol-dot.png", "image/png"));

  EXPECT_TRUE(GetResource(image_url_from_data_url, "image/png"));

  // Ensure encodings are specified.
  EXPECT_TRUE(
      GetSerializedData("link_styles.css", "text/css").StartsWith("@charset"));
  EXPECT_TRUE(GetSerializedData("import_styles.css", "text/css")
                  .StartsWith("@charset"));
  EXPECT_TRUE(GetSerializedData("import_style_from_link.css", "text/css")
                  .StartsWith("@charset"));
  EXPECT_TRUE(GetSerializedData("encoding.css", "text/css")
                  .StartsWith("@charset \"euc-kr\";"));

  // Ensure that stylesheet contents are not NFC-normalized before encoding.
  EXPECT_TRUE(GetSerializedData("encoding.css", "text/css")
                  .Contains("\xE4\xC5\xD1\xE2"));
  EXPECT_FALSE(GetSerializedData("encoding.css", "text/css")
                   .Contains("\xE4\xC5\xE4\xC5"));
}

TEST_F(FrameSerializerTest, CSSImport) {
  SetBaseFolder("frameserializer/css/");

  RegisterURL("import.html", "text/html");
  RegisterURL("import/base.css", "text/css");
  RegisterURL("import/relative/red-background.css", "text/css");
  RegisterURL("import/absolute/green-header.css", "text/css");

  Serialize("import.html");

  EXPECT_TRUE(IsSerialized("import.html", "text/html"));
  EXPECT_TRUE(IsSerialized("import/base.css", "text/css"));
  EXPECT_TRUE(IsSerialized("import/relative/red-background.css", "text/css"));
  EXPECT_TRUE(IsSerialized("import/absolute/green-header.css", "text/css"));
}

TEST_F(FrameSerializerTest, XMLDeclaration) {
  V8TestingScope scope;
  SetBaseFolder("frameserializer/xml/");

  RegisterURL("xmldecl.xml", "text/xml");
  Serialize("xmldecl.xml");

  String expected_start("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
  EXPECT_TRUE(GetSerializedData("xmldecl.xml").StartsWith(expected_start));
}

TEST_F(FrameSerializerTest, DTD) {
  SetBaseFolder("frameserializer/dtd/");

  RegisterURL("html5.html", "text/html");
  Serialize("html5.html");

  String expected_start("<!DOCTYPE html>");
  EXPECT_TRUE(GetSerializedData("html5.html").StartsWith(expected_start));
}

TEST_F(FrameSerializerTest, Font) {
  SetBaseFolder("frameserializer/font/");

  RegisterURL("font.html", "text/html");
  RegisterURL("font.ttf", "application/octet-stream");

  Serialize("font.html");

  EXPECT_TRUE(IsSerialized("font.ttf", "application/octet-stream"));
}

TEST_F(FrameSerializerTest, DataURI) {
  SetBaseFolder("frameserializer/datauri/");

  RegisterURL("page_with_data.html", "text/html");

  Serialize("page_with_data.html");

  EXPECT_EQ(1U, GetResources().size());
  EXPECT_TRUE(IsSerialized("page_with_data.html", "text/html"));
}

TEST_F(FrameSerializerTest, DataURIMorphing) {
  SetBaseFolder("frameserializer/datauri/");

  RegisterURL("page_with_morphing_data.html", "text/html");

  Serialize("page_with_morphing_data.html");

  EXPECT_EQ(2U, GetResources().size());
  EXPECT_TRUE(IsSerialized("page_with_morphing_data.html", "text/html"));
}

TEST_F(FrameSerializerTest, RewriteLinksSimple) {
  SetBaseFolder("frameserializer/rewritelinks/");
  SetRewriteURLFolder("folder");

  RegisterURL("rewritelinks_simple.html", "text/html");
  RegisterURL("absolute.png", "image.png", "image/png");
  RegisterURL("relative.png", "image.png", "image/png");
  RegisterRewriteURL("http://www.test.com/absolute.png", "a.png");
  RegisterRewriteURL("http://www.test.com/relative.png", "b.png");

  Serialize("rewritelinks_simple.html");

  EXPECT_EQ(3U, GetResources().size());
  EXPECT_NE(GetSerializedData("rewritelinks_simple.html", "text/html")
                .Find("\"folder/a.png\""),
            kNotFound);
  EXPECT_NE(GetSerializedData("rewritelinks_simple.html", "text/html")
                .Find("\"folder/b.png\""),
            kNotFound);
}

// Test that we don't regress https://bugs.webkit.org/show_bug.cgi?id=99105
TEST_F(FrameSerializerTest, SVGImageDontCrash) {
  SetBaseFolder("frameserializer/svg/");

  RegisterURL("page_with_svg_image.html", "text/html");
  RegisterURL("green_rectangle.svg", "image/svg+xml");

  Serialize("page_with_svg_image.html");

  EXPECT_EQ(2U, GetResources().size());

  EXPECT_TRUE(IsSerialized("green_rectangle.svg", "image/svg+xml"));
  EXPECT_GT(GetSerializedData("green_rectangle.svg", "image/svg+xml").length(),
            250U);
}

TEST_F(FrameSerializerTest, DontIncludeErrorImage) {
  SetBaseFolder("frameserializer/image/");

  RegisterURL("page_with_img_error.html", "text/html");
  RegisterURL("error_image.png", "image/png");

  Serialize("page_with_img_error.html");

  EXPECT_EQ(1U, GetResources().size());
  EXPECT_TRUE(IsSerialized("page_with_img_error.html", "text/html"));
  EXPECT_FALSE(IsSerialized("error_image.png", "image/png"));
}

TEST_F(FrameSerializerTest, NamespaceElementsDontCrash) {
  SetBaseFolder("frameserializer/namespace/");

  RegisterURL("namespace_element.html", "text/html");

  Serialize("namespace_element.html");

  EXPECT_EQ(1U, GetResources().size());
  EXPECT_TRUE(IsSerialized("namespace_element.html", "text/html"));
  EXPECT_GT(GetSerializedData("namespace_element.html", "text/html").length(),
            0U);
}

TEST_F(FrameSerializerTest, markOfTheWebDeclaration) {
  EXPECT_EQ("saved from url=(0015)http://foo.com/",
            FrameSerializer::MarkOfTheWebDeclaration(KURL("http://foo.com")));
  EXPECT_EQ("saved from url=(0015)http://f-o.com/",
            FrameSerializer::MarkOfTheWebDeclaration(KURL("http://f-o.com")));
  EXPECT_EQ("saved from url=(0019)http://foo.com-%2D/",
            FrameSerializer::MarkOfTheWebDeclaration(KURL("http://foo.com--")));
  EXPECT_EQ(
      "saved from url=(0024)http://f-%2D.com-%2D%3E/",
      FrameSerializer::MarkOfTheWebDeclaration(KURL("http://f--.com-->")));
  EXPECT_EQ(
      "saved from url=(0020)http://foo.com/?-%2D",
      FrameSerializer::MarkOfTheWebDeclaration(KURL("http://foo.com?--")));
  EXPECT_EQ(
      "saved from url=(0020)http://foo.com/#-%2D",
      FrameSerializer::MarkOfTheWebDeclaration(KURL("http://foo.com#--")));
  EXPECT_EQ("saved from url=(0026)http://foo.com/#bar-%2Dbaz",
            FrameSerializer::MarkOfTheWebDeclaration(
                KURL("http://foo.com#bar--baz")));
}

}  // namespace blink