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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/plugins/pdf_iframe_navigation_throttle.h"
#include "base/files/file_path.h"
#include "base/functional/bind.h"
#include "base/memory/raw_ptr.h"
#include "base/run_loop.h"
#include "base/test/metrics/histogram_tester.h"
#include "chrome/common/chrome_content_client.h"
#include "chrome/test/base/chrome_render_view_host_test_harness.h"
#include "chrome/test/base/testing_profile.h"
#include "components/pdf/common/constants.h"
#include "components/pdf/common/pdf_util.h"
#include "content/public/test/mock_navigation_handle.h"
#include "content/public/test/mock_navigation_throttle_registry.h"
#include "net/http/http_util.h"
#include "ppapi/buildflags/buildflags.h"
#if BUILDFLAG(ENABLE_PLUGINS)
#include "base/test/test_future.h"
#include "chrome/browser/plugins/chrome_plugin_service_filter.h"
#include "chrome/browser/plugins/plugin_prefs.h"
#include "content/public/browser/plugin_service.h"
#include "content/public/common/webplugininfo.h"
#endif
using testing::NiceMock;
namespace {
const char kExampleURL[] = "http://example.com";
} // namespace
class PDFIFrameNavigationThrottleTest : public ChromeRenderViewHostTestHarness {
public:
void SetAlwaysOpenPdfExternallyForTests(bool always_open_pdf_externally) {
#if BUILDFLAG(ENABLE_PLUGINS)
PluginPrefs::GetForTestingProfile(profile())
->SetAlwaysOpenPdfExternallyForTests(always_open_pdf_externally);
ChromePluginServiceFilter* filter =
ChromePluginServiceFilter::GetInstance();
filter->RegisterProfile(profile());
#endif
}
void LoadPluginsSynchronously() {
#if BUILDFLAG(ENABLE_PLUGINS)
base::test::TestFuture<const std::vector<content::WebPluginInfo>&> signal;
content::PluginService::GetInstance()->GetPlugins(signal.GetCallback());
EXPECT_TRUE(signal.Wait());
#endif
}
scoped_refptr<net::HttpResponseHeaders> GetHeaderWithMimeType(
const std::string& mime_type) {
std::string raw_response_headers =
"HTTP/1.1 200 OK\r\n"
"content-type: " +
mime_type + "\r\n";
return base::MakeRefCounted<net::HttpResponseHeaders>(
net::HttpUtil::AssembleRawHeaders(raw_response_headers));
}
content::RenderFrameHost* subframe() { return subframe_; }
private:
void SetUp() override {
ChromeRenderViewHostTestHarness::SetUp();
#if BUILDFLAG(ENABLE_PLUGINS)
content::PluginService* plugin_service =
content::PluginService::GetInstance();
plugin_service->Init();
plugin_service->SetFilter(ChromePluginServiceFilter::GetInstance());
// Register a fake PDF Viewer plugin into our plugin service.
content::WebPluginInfo info;
info.path = base::FilePath(ChromeContentClient::kPDFExtensionPluginPath);
info.mime_types.emplace_back(pdf::kPDFMimeType, "pdf",
"Fake PDF description");
plugin_service->RegisterInternalPlugin(info, true);
// Set the plugin list as dirty, like when the browser first starts.
plugin_service->RefreshPlugins();
#endif
content::RenderFrameHostTester::For(main_rfh())
->InitializeRenderFrameIfNeeded();
subframe_ = content::RenderFrameHostTester::For(main_rfh())
->AppendChild("subframe");
}
raw_ptr<content::RenderFrameHost, DanglingUntriaged> subframe_;
};
TEST_F(PDFIFrameNavigationThrottleTest, OnlyCreateThrottleForSubframes) {
// Disable the PDF plugin to test main vs. subframes.
SetAlwaysOpenPdfExternallyForTests(true);
// Never create throttle for main frames.
content::MockNavigationHandle handle(GURL(kExampleURL), main_rfh());
handle.set_response_headers(GetHeaderWithMimeType(""));
content::MockNavigationThrottleRegistry registry(
&handle,
content::MockNavigationThrottleRegistry::RegistrationMode::kHold);
PDFIFrameNavigationThrottle::MaybeCreateAndAdd(registry);
ASSERT_EQ(0u, registry.throttles().size());
// Create a throttle for subframes.
handle.set_render_frame_host(subframe());
PDFIFrameNavigationThrottle::MaybeCreateAndAdd(registry);
ASSERT_EQ(1u, registry.throttles().size());
}
TEST_F(PDFIFrameNavigationThrottleTest, InterceptPDFOnly) {
// Setup.
SetAlwaysOpenPdfExternallyForTests(true);
LoadPluginsSynchronously();
NiceMock<content::MockNavigationHandle> handle(GURL(kExampleURL), subframe());
handle.set_response_headers(GetHeaderWithMimeType("application/pdf"));
NiceMock<content::MockNavigationThrottleRegistry> registry(
&handle,
content::MockNavigationThrottleRegistry::RegistrationMode::kHold);
// Verify that we CANCEL for PDF mime type.
PDFIFrameNavigationThrottle::MaybeCreateAndAdd(registry);
ASSERT_EQ(1u, registry.throttles().size());
auto* throttle = static_cast<PDFIFrameNavigationThrottle*>(
registry.throttles().back().get());
ASSERT_EQ(content::NavigationThrottle::CANCEL_AND_IGNORE,
throttle->WillProcessResponse().action());
// Verify that we PROCEED for other mime types.
// Blank mime type
handle.set_response_headers(GetHeaderWithMimeType(""));
ASSERT_EQ(content::NavigationThrottle::PROCEED,
throttle->WillProcessResponse().action());
// HTML
handle.set_response_headers(GetHeaderWithMimeType("text/html"));
ASSERT_EQ(content::NavigationThrottle::PROCEED,
throttle->WillProcessResponse().action());
// PNG
handle.set_response_headers(GetHeaderWithMimeType("image/png"));
ASSERT_EQ(content::NavigationThrottle::PROCEED,
throttle->WillProcessResponse().action());
}
TEST_F(PDFIFrameNavigationThrottleTest, AllowPDFAttachments) {
// Setup
SetAlwaysOpenPdfExternallyForTests(true);
// Verify that we PROCEED for PDF mime types with an attachment
// content-disposition.
std::string raw_response_headers =
"HTTP/1.1 200 OK\r\n"
"content-type: application/pdf\r\n"
"content-disposition: attachment\r\n";
scoped_refptr<net::HttpResponseHeaders> headers =
new net::HttpResponseHeaders(raw_response_headers);
content::MockNavigationHandle handle(GURL(kExampleURL), subframe());
handle.set_response_headers(headers.get());
content::MockNavigationThrottleRegistry registry(
&handle,
content::MockNavigationThrottleRegistry::RegistrationMode::kHold);
PDFIFrameNavigationThrottle::MaybeCreateAndAdd(registry);
ASSERT_EQ(1u, registry.throttles().size());
ASSERT_EQ(content::NavigationThrottle::PROCEED,
registry.throttles().back()->WillProcessResponse().action());
}
#if BUILDFLAG(ENABLE_PLUGINS)
TEST_F(PDFIFrameNavigationThrottleTest, ProceedIfPDFViewerIsEnabled) {
content::MockNavigationHandle handle(GURL(kExampleURL), subframe());
handle.set_response_headers(GetHeaderWithMimeType("application/pdf"));
content::MockNavigationThrottleRegistry registry(
&handle,
content::MockNavigationThrottleRegistry::RegistrationMode::kHold);
SetAlwaysOpenPdfExternallyForTests(false);
// First time should asynchronously Resume the navigation.
PDFIFrameNavigationThrottle::MaybeCreateAndAdd(registry);
ASSERT_EQ(1u, registry.throttles().size());
auto* throttle = static_cast<PDFIFrameNavigationThrottle*>(
registry.throttles().back().get());
ASSERT_EQ(content::NavigationThrottle::DEFER,
throttle->WillProcessResponse().action());
base::RunLoop run_loop;
throttle->set_resume_callback_for_testing(run_loop.QuitClosure());
run_loop.Run();
registry.throttles().clear();
// Subsequent times should synchronously PROCEED the navigation.
PDFIFrameNavigationThrottle::MaybeCreateAndAdd(registry);
ASSERT_EQ(1u, registry.throttles().size());
ASSERT_EQ(content::NavigationThrottle::PROCEED,
registry.throttles().back()->WillProcessResponse().action());
}
TEST_F(PDFIFrameNavigationThrottleTest, CancelIfPDFViewerIsDisabled) {
NiceMock<content::MockNavigationHandle> handle(GURL(kExampleURL), subframe());
handle.set_response_headers(GetHeaderWithMimeType("application/pdf"));
NiceMock<content::MockNavigationThrottleRegistry> registry(
&handle,
content::MockNavigationThrottleRegistry::RegistrationMode::kHold);
SetAlwaysOpenPdfExternallyForTests(true);
// First time should asynchronously Cancel the navigation.
PDFIFrameNavigationThrottle::MaybeCreateAndAdd(registry);
ASSERT_EQ(1u, registry.throttles().size());
auto* throttle = static_cast<PDFIFrameNavigationThrottle*>(
registry.throttles().back().get());
ASSERT_EQ(content::NavigationThrottle::DEFER,
throttle->WillProcessResponse().action());
base::RunLoop run_loop;
throttle->set_cancel_deferred_navigation_callback_for_testing(
base::BindRepeating(
[](base::RunLoop* run_loop,
content::NavigationThrottle::ThrottleCheckResult result) {
ASSERT_EQ(content::NavigationThrottle::CANCEL_AND_IGNORE, result);
run_loop->Quit();
},
base::Unretained(&run_loop)));
run_loop.Run();
registry.throttles().clear();
// Subsequent times should synchronously CANCEL the navigation.
PDFIFrameNavigationThrottle::MaybeCreateAndAdd(registry);
ASSERT_EQ(1u, registry.throttles().size());
ASSERT_EQ(content::NavigationThrottle::CANCEL_AND_IGNORE,
registry.throttles().back()->WillProcessResponse().action());
}
TEST_F(PDFIFrameNavigationThrottleTest, MetricsPDFLoadStatus) {
const char kPdfLoadStatusMetric[] = "PDF.LoadStatus2";
base::HistogramTester histograms;
histograms.ExpectBucketCount(
kPdfLoadStatusMetric, PDFLoadStatus::kLoadedIframePdfWithNoPdfViewer, 0);
// Setup.
SetAlwaysOpenPdfExternallyForTests(true);
LoadPluginsSynchronously();
NiceMock<content::MockNavigationHandle> handle(GURL(kExampleURL), subframe());
handle.set_response_headers(GetHeaderWithMimeType("application/pdf"));
NiceMock<content::MockNavigationThrottleRegistry> registry(
&handle,
content::MockNavigationThrottleRegistry::RegistrationMode::kHold);
// Verify that we CANCEL for PDF mime type.
PDFIFrameNavigationThrottle::MaybeCreateAndAdd(registry);
ASSERT_EQ(1u, registry.throttles().size());
ASSERT_EQ(content::NavigationThrottle::CANCEL_AND_IGNORE,
registry.throttles().back()->WillProcessResponse().action());
histograms.ExpectUniqueSample(kPdfLoadStatusMetric,
PDFLoadStatus::kLoadedIframePdfWithNoPdfViewer,
/*expected_bucket_count=*/1);
}
#endif
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