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content / browser / loader / file_url_loader_factory_browsertest.cc [blame]
// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/memory/raw_ptr.h"
// This must be before Windows headers
#include "base/functional/callback_helpers.h"
#include "base/strings/stringprintf.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_utils.h"
#if BUILDFLAG(IS_WIN)
#include <objbase.h>
#include <windows.h>
#include <shlobj.h>
#include <wrl/client.h>
#endif
#include <string>
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/files/scoped_temp_dir.h"
#include "base/path_service.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/threading/thread_restrictions.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/site_instance.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/content_client.h"
#include "content/public/common/content_paths.h"
#include "content/public/common/content_switches.h"
#include "content/public/test/content_browser_test.h"
#include "content/public/test/content_browser_test_content_browser_client.h"
#include "content/public/test/content_browser_test_utils.h"
#include "content/public/test/test_navigation_observer.h"
#include "content/shell/browser/shell.h"
#include "net/base/filename_util.h"
#include "net/base/net_errors.h"
#include "net/test/embedded_test_server/embedded_test_server.h"
#include "net/test/gtest_util.h"
#include "url/gurl.h"
namespace content {
namespace {
const char16_t kSuccessTitle[] = u"Title Of Awesomeness";
const char16_t kErrorTitle[] = u"Error";
base::FilePath TestFilePath() {
base::ScopedAllowBlockingForTesting allow_blocking;
return GetTestFilePath("", "title2.html");
}
base::FilePath AbsoluteFilePath(const base::FilePath& file_path) {
base::ScopedAllowBlockingForTesting allow_blocking;
return base::MakeAbsoluteFilePath(file_path);
}
class TestFileAccessContentBrowserClient
: public ContentBrowserTestContentBrowserClient {
public:
struct FileAccessAllowedArgs {
base::FilePath path;
base::FilePath absolute_path;
base::FilePath profile_path;
};
TestFileAccessContentBrowserClient() = default;
void set_blocked_path(const base::FilePath& blocked_path) {
blocked_path_ = AbsoluteFilePath(blocked_path);
}
TestFileAccessContentBrowserClient(
const TestFileAccessContentBrowserClient&) = delete;
TestFileAccessContentBrowserClient& operator=(
const TestFileAccessContentBrowserClient&) = delete;
~TestFileAccessContentBrowserClient() override = default;
bool IsFileAccessAllowed(const base::FilePath& path,
const base::FilePath& absolute_path,
const base::FilePath& profile_path) override {
access_allowed_args_.push_back(
FileAccessAllowedArgs{path, absolute_path, profile_path});
return blocked_path_ != absolute_path;
}
// Returns a vector of arguments passed to each invocation of
// IsFileAccessAllowed().
const std::vector<FileAccessAllowedArgs>& access_allowed_args() const {
return access_allowed_args_;
}
void ClearAccessAllowedArgs() { access_allowed_args_.clear(); }
private:
base::FilePath blocked_path_;
std::vector<FileAccessAllowedArgs> access_allowed_args_;
};
// This class contains integration tests for file URLs.
class FileURLLoaderFactoryBrowserTest : public ContentBrowserTest {
public:
FileURLLoaderFactoryBrowserTest() = default;
// ContentBrowserTest implementation:
void SetUpOnMainThread() override {
base::FilePath test_data_path;
EXPECT_TRUE(base::PathService::Get(DIR_TEST_DATA, &test_data_path));
embedded_test_server()->ServeFilesFromDirectory(test_data_path);
EXPECT_TRUE(embedded_test_server()->Start());
}
base::FilePath ProfilePath() const {
return shell()
->web_contents()
->GetSiteInstance()
->GetBrowserContext()
->GetPath();
}
GURL RedirectToFileURL() const {
return embedded_test_server()->GetURL(
"/server-redirect?" + net::FilePathToFileURL(TestFilePath()).spec());
}
};
IN_PROC_BROWSER_TEST_F(FileURLLoaderFactoryBrowserTest, Basic) {
TestFileAccessContentBrowserClient test_browser_client;
EXPECT_TRUE(NavigateToURL(shell(), net::FilePathToFileURL(TestFilePath())));
EXPECT_EQ(kSuccessTitle, shell()->web_contents()->GetTitle());
ASSERT_EQ(1u, test_browser_client.access_allowed_args().size());
EXPECT_EQ(TestFilePath(), test_browser_client.access_allowed_args()[0].path);
EXPECT_EQ(AbsoluteFilePath(TestFilePath()),
test_browser_client.access_allowed_args()[0].absolute_path);
EXPECT_EQ(ProfilePath(),
test_browser_client.access_allowed_args()[0].profile_path);
}
IN_PROC_BROWSER_TEST_F(FileURLLoaderFactoryBrowserTest, FileAccessNotAllowed) {
TestFileAccessContentBrowserClient test_browser_client;
test_browser_client.set_blocked_path(TestFilePath());
TestNavigationObserver navigation_observer(shell()->web_contents());
EXPECT_FALSE(NavigateToURL(shell(), net::FilePathToFileURL(TestFilePath())));
EXPECT_FALSE(navigation_observer.last_navigation_succeeded());
EXPECT_THAT(navigation_observer.last_net_error_code(),
net::test::IsError(net::ERR_ACCESS_DENIED));
EXPECT_EQ(net::FilePathToFileURL(TestFilePath()),
shell()->web_contents()->GetURL());
EXPECT_EQ(kErrorTitle, shell()->web_contents()->GetTitle());
ASSERT_EQ(1u, test_browser_client.access_allowed_args().size());
EXPECT_EQ(TestFilePath(), test_browser_client.access_allowed_args()[0].path);
EXPECT_EQ(AbsoluteFilePath(TestFilePath()),
test_browser_client.access_allowed_args()[0].absolute_path);
EXPECT_EQ(ProfilePath(),
test_browser_client.access_allowed_args()[0].profile_path);
}
#if BUILDFLAG(IS_POSIX)
// Test symbolic links on POSIX platforms. These act like the contents of
// the symbolic link are the same as the contents of the file it links to.
IN_PROC_BROWSER_TEST_F(FileURLLoaderFactoryBrowserTest, SymlinksToFiles) {
TestFileAccessContentBrowserClient test_browser_client;
base::ScopedAllowBlockingForTesting allow_blocking;
base::ScopedTempDir temp_dir;
ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
// Get an absolute path since |temp_dir| can contain a symbolic link.
base::FilePath absolute_temp_dir = AbsoluteFilePath(temp_dir.GetPath());
// MIME sniffing should use the symbolic link's destination path, so despite
// not having a file extension of "html", this should be rendered as HTML.
base::FilePath sym_link = absolute_temp_dir.AppendASCII("link.bin");
ASSERT_TRUE(
base::CreateSymbolicLink(AbsoluteFilePath(TestFilePath()), sym_link));
EXPECT_TRUE(NavigateToURL(shell(), net::FilePathToFileURL(sym_link)));
EXPECT_EQ(kSuccessTitle, shell()->web_contents()->GetTitle());
ASSERT_EQ(1u, test_browser_client.access_allowed_args().size());
EXPECT_EQ(sym_link, test_browser_client.access_allowed_args()[0].path);
EXPECT_EQ(AbsoluteFilePath(sym_link),
test_browser_client.access_allowed_args()[0].absolute_path);
EXPECT_EQ(ProfilePath(),
test_browser_client.access_allowed_args()[0].profile_path);
// Test the case where access to the destination URL is blocked. Note that
// this is the same as blocking the symbolic link URL - the
// IsFileAccessAllowed() is passed both the symbolic link path and the
// absolute path, so rejecting on looks just like rejecting the other.
test_browser_client.ClearAccessAllowedArgs();
test_browser_client.set_blocked_path(TestFilePath());
TestNavigationObserver navigation_observer3(shell()->web_contents());
EXPECT_FALSE(NavigateToURL(shell(), net::FilePathToFileURL(sym_link)));
EXPECT_FALSE(navigation_observer3.last_navigation_succeeded());
EXPECT_THAT(navigation_observer3.last_net_error_code(),
net::test::IsError(net::ERR_ACCESS_DENIED));
EXPECT_EQ(net::FilePathToFileURL(sym_link),
shell()->web_contents()->GetURL());
EXPECT_EQ(kErrorTitle, shell()->web_contents()->GetTitle());
ASSERT_EQ(1u, test_browser_client.access_allowed_args().size());
EXPECT_EQ(sym_link, test_browser_client.access_allowed_args()[0].path);
EXPECT_EQ(AbsoluteFilePath(sym_link),
test_browser_client.access_allowed_args()[0].absolute_path);
EXPECT_EQ(ProfilePath(),
test_browser_client.access_allowed_args()[0].profile_path);
}
#elif BUILDFLAG(IS_WIN)
// Test shortcuts on Windows. These are treated as redirects.
IN_PROC_BROWSER_TEST_F(FileURLLoaderFactoryBrowserTest, ResolveShortcutTest) {
TestFileAccessContentBrowserClient test_browser_client;
// Create an empty temp directory, to be sure there's no file in it.
base::ScopedAllowBlockingForTesting allow_blocking;
base::ScopedTempDir temp_dir;
ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
base::FilePath lnk_path =
temp_dir.GetPath().Append(FILE_PATH_LITERAL("foo.lnk"));
base::FilePath test = TestFilePath();
// Create a shortcut for the test.
{
Microsoft::WRL::ComPtr<IShellLink> shell;
ASSERT_TRUE(SUCCEEDED(::CoCreateInstance(
CLSID_ShellLink, nullptr, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&shell))));
Microsoft::WRL::ComPtr<IPersistFile> persist;
ASSERT_TRUE(SUCCEEDED(shell.As<IPersistFile>(&persist)));
EXPECT_TRUE(SUCCEEDED(shell->SetPath(TestFilePath().value().c_str())));
EXPECT_TRUE(SUCCEEDED(shell->SetDescription(L"ResolveShortcutTest")));
std::wstring lnk_string = lnk_path.value();
EXPECT_TRUE(SUCCEEDED(persist->Save(lnk_string.c_str(), TRUE)));
}
EXPECT_TRUE(NavigateToURL(
shell(), net::FilePathToFileURL(lnk_path),
net::FilePathToFileURL(TestFilePath()) /* expect_commit_url */));
EXPECT_EQ(kSuccessTitle, shell()->web_contents()->GetTitle());
ASSERT_EQ(2u, test_browser_client.access_allowed_args().size());
EXPECT_EQ(lnk_path, test_browser_client.access_allowed_args()[0].path);
EXPECT_EQ(AbsoluteFilePath(lnk_path),
test_browser_client.access_allowed_args()[0].absolute_path);
EXPECT_EQ(ProfilePath(),
test_browser_client.access_allowed_args()[0].profile_path);
EXPECT_EQ(TestFilePath(), test_browser_client.access_allowed_args()[1].path);
EXPECT_EQ(AbsoluteFilePath(TestFilePath()),
test_browser_client.access_allowed_args()[1].absolute_path);
EXPECT_EQ(ProfilePath(),
test_browser_client.access_allowed_args()[1].profile_path);
// Test the case where access to the shortcut URL is blocked. Should display
// an error page at the shortcut's file URL.
test_browser_client.ClearAccessAllowedArgs();
test_browser_client.set_blocked_path(lnk_path);
TestNavigationObserver navigation_observer2(shell()->web_contents());
EXPECT_FALSE(NavigateToURL(shell(), net::FilePathToFileURL(lnk_path)));
EXPECT_FALSE(navigation_observer2.last_navigation_succeeded());
EXPECT_THAT(navigation_observer2.last_net_error_code(),
net::test::IsError(net::ERR_ACCESS_DENIED));
EXPECT_EQ(net::FilePathToFileURL(lnk_path),
shell()->web_contents()->GetURL());
EXPECT_EQ(kErrorTitle, shell()->web_contents()->GetTitle());
ASSERT_EQ(1u, test_browser_client.access_allowed_args().size());
EXPECT_EQ(lnk_path, test_browser_client.access_allowed_args()[0].path);
EXPECT_EQ(AbsoluteFilePath(lnk_path),
test_browser_client.access_allowed_args()[0].absolute_path);
EXPECT_EQ(ProfilePath(),
test_browser_client.access_allowed_args()[0].profile_path);
// Test the case where access to the destination URL is blocked. The redirect
// is followed, so this should end up at the shortcut destination, but
// displaying an error.
test_browser_client.ClearAccessAllowedArgs();
test_browser_client.set_blocked_path(TestFilePath());
TestNavigationObserver navigation_observer3(shell()->web_contents());
EXPECT_FALSE(NavigateToURL(shell(), net::FilePathToFileURL(lnk_path)));
EXPECT_FALSE(navigation_observer3.last_navigation_succeeded());
EXPECT_THAT(navigation_observer3.last_net_error_code(),
net::test::IsError(net::ERR_ACCESS_DENIED));
EXPECT_EQ(net::FilePathToFileURL(TestFilePath()),
shell()->web_contents()->GetURL());
EXPECT_EQ(kErrorTitle, shell()->web_contents()->GetTitle());
ASSERT_EQ(2u, test_browser_client.access_allowed_args().size());
EXPECT_EQ(lnk_path, test_browser_client.access_allowed_args()[0].path);
EXPECT_EQ(AbsoluteFilePath(lnk_path),
test_browser_client.access_allowed_args()[0].absolute_path);
EXPECT_EQ(ProfilePath(),
test_browser_client.access_allowed_args()[0].profile_path);
EXPECT_EQ(TestFilePath(), test_browser_client.access_allowed_args()[1].path);
EXPECT_EQ(AbsoluteFilePath(TestFilePath()),
test_browser_client.access_allowed_args()[1].absolute_path);
EXPECT_EQ(ProfilePath(),
test_browser_client.access_allowed_args()[1].profile_path);
}
#endif // BUILDFLAG(IS_WIN)
IN_PROC_BROWSER_TEST_F(FileURLLoaderFactoryBrowserTest,
RedirectToFileUrlMainFrame) {
TestFileAccessContentBrowserClient test_browser_client;
TestNavigationObserver navigation_observer(shell()->web_contents());
EXPECT_FALSE(NavigateToURL(shell(), RedirectToFileURL()));
EXPECT_FALSE(navigation_observer.last_navigation_succeeded());
EXPECT_THAT(navigation_observer.last_net_error_code(),
net::test::IsError(net::ERR_UNSAFE_REDIRECT));
// The redirect should not have been followed. This is important so that a
// reload will show the same error.
EXPECT_EQ(RedirectToFileURL(), shell()->web_contents()->GetURL());
EXPECT_EQ(kErrorTitle, shell()->web_contents()->GetTitle());
// There should never have been a request for the file URL.
EXPECT_TRUE(test_browser_client.access_allowed_args().empty());
// Reloading returns the same error.
TestNavigationObserver navigation_observer2(shell()->web_contents());
shell()->Reload();
navigation_observer2.Wait();
EXPECT_FALSE(navigation_observer2.last_navigation_succeeded());
EXPECT_THAT(navigation_observer2.last_net_error_code(),
net::test::IsError(net::ERR_UNSAFE_REDIRECT));
EXPECT_EQ(RedirectToFileURL(), shell()->web_contents()->GetURL());
EXPECT_EQ(kErrorTitle, shell()->web_contents()->GetTitle());
// There should never have been a request for the file URL.
EXPECT_TRUE(test_browser_client.access_allowed_args().empty());
}
IN_PROC_BROWSER_TEST_F(FileURLLoaderFactoryBrowserTest,
RedirectToFileUrlFetch) {
TestFileAccessContentBrowserClient test_browser_client;
EXPECT_TRUE(
NavigateToURL(shell(), embedded_test_server()->GetURL("/title2.html")));
std::string fetch_redirect_to_file = base::StringPrintf(
"(async () => {"
" try {"
" var resp = (await fetch('%s'));"
" return 'ok';"
" } catch (error) {"
" return 'error';"
" }"
"})();",
RedirectToFileURL().spec().c_str());
// Unfortunately, fetch doesn't provide a way to unambiguously know if the
// request failed due to the redirect being unsafe.
EXPECT_EQ("error", EvalJs(shell()->web_contents()->GetPrimaryMainFrame(),
fetch_redirect_to_file));
// There should never have been a request for the file URL.
EXPECT_TRUE(test_browser_client.access_allowed_args().empty());
}
IN_PROC_BROWSER_TEST_F(FileURLLoaderFactoryBrowserTest,
RedirectToFileUrlSubFrame) {
TestFileAccessContentBrowserClient test_browser_client;
EXPECT_TRUE(NavigateToURL(
shell(), embedded_test_server()->GetURL("/page_with_iframe.html")));
LOG(WARNING) << embedded_test_server()->GetURL("/page_with_iframe.html");
TestNavigationObserver navigation_observer(shell()->web_contents());
EXPECT_TRUE(NavigateIframeToURL(shell()->web_contents(), "test_iframe",
RedirectToFileURL()));
navigation_observer.Wait();
EXPECT_FALSE(navigation_observer.last_navigation_succeeded());
EXPECT_THAT(navigation_observer.last_net_error_code(),
net::test::IsError(net::ERR_UNSAFE_REDIRECT));
// There should never have been a request for the file URL.
EXPECT_TRUE(test_browser_client.access_allowed_args().empty());
}
// The test below opens a |popup| in a way that doesn't trigger a
// RenderFrameImpl::CommitNavigation. This means that the popup will depend on
// inheriting URLLoaderFactoryBundle from the opener.
//
// Before triggering any subresource fetches in the popup, the test closes the
// opener window. If the URLLoaderFactoryBundle hasn't been inherited at this
// point yet, then we might run into trouble later. Another way how we might
// get into trouble is if FileURLLoaderFactory's clone doesn't survive closing
// of the opener.
//
// Finally, the test triggers a subresource fetch in the popup. We expect that
// this fetch should use the right URLLoaderFactoryBundle - one that contains
// a functional FileURLLoaderFactory.
//
// This is a regression test for https://crbug.com/1106995
IN_PROC_BROWSER_TEST_F(FileURLLoaderFactoryBrowserTest,
LifetimeOfClonedFactory) {
GURL opener_url(GetTestUrl("", "title1.html"));
EXPECT_TRUE(NavigateToURL(shell(), opener_url));
// Open a |popup| in a way that doesn't trigger RFI::CommitNavigation.
WebContentsAddedObserver popup_observer;
ASSERT_TRUE(ExecJs(shell(), "window.open('', '_blank')"));
WebContents* popup = popup_observer.GetWebContents();
// Close the opener and make sure that the |popup| actually sees that the
// |opener| has closed.
//
// This test step means that we cannot rely on the |opener| being alive when
// the first subresource fetch happens in the |popup| (in the next test step
// below).
EXPECT_EQ(true, EvalJs(popup, "!!window.opener"));
shell()->Close();
const char kScriptToWaitForNoOpener[] = R"(
new Promise(function (resolve, reject) {
function CheckAndWaitMoreIfNeeded() {
if (!window.opener)
resolve('OPENER GONE');
setTimeout(CheckAndWaitMoreIfNeeded, 50);
}
CheckAndWaitMoreIfNeeded();
});
)";
EXPECT_EQ("OPENER GONE", EvalJs(popup, kScriptToWaitForNoOpener));
// Trigger a subresource fetch in the popup. This is the main test step - it
// verifies that at this point the popup has access to a functional
// FileURLLoaderFactory.
const char kScriptTemplateToTriggerSubresourceFetch[] = R"(
new Promise(function (resolve, reject) {
var img = document.createElement('img');
img.src = $1;
img.onload = _ => resolve('OK');
img.onerror = e => resolve('ERR: ' + e);
});
)";
GURL img_url = GetTestUrl("site_isolation", "png-corp.png");
EXPECT_EQ("OK",
EvalJs(popup, JsReplace(kScriptTemplateToTriggerSubresourceFetch,
img_url)));
}
class FileURLLoaderFactoryDisabledSecurityBrowserTest
: public FileURLLoaderFactoryBrowserTest {
public:
FileURLLoaderFactoryDisabledSecurityBrowserTest() = default;
void SetUpCommandLine(base::CommandLine* command_line) override {
command_line->AppendSwitch(switches::kDisableWebSecurity);
FileURLLoaderFactoryBrowserTest::SetUpCommandLine(command_line);
}
};
// Test whether sandboxed file: frames still can access file: subresources.
IN_PROC_BROWSER_TEST_F(FileURLLoaderFactoryDisabledSecurityBrowserTest,
SubresourcesInSandboxedFileFrame) {
GURL main_url(GetTestUrl("", "title1.html"));
EXPECT_TRUE(NavigateToURL(shell(), main_url));
// Append a sandboxed file: subframe.
{
GURL sandboxed_url(GetTestUrl("", "title2.html"));
TestNavigationObserver nav_observer(shell()->web_contents());
const char kScriptTemplateToAddSubframe[] = R"(
f = document.createElement('iframe');
f.sandbox = 'allow-scripts';
f.src = $1;
document.body.appendChild(f);
)";
ASSERT_TRUE(ExecJs(shell(),
JsReplace(kScriptTemplateToAddSubframe, sandboxed_url)));
nav_observer.Wait();
}
// Trigger a subresource fetch in the subframe. This is the main test step -
// it verifies that at this point the subframe has access to a functional
// FileURLLoaderFactory.
//
// Access to a file: (local-scheme) subresource is normally forbidden by
// blink::SecurityOrigin::CanDisplay if the requesting origin is opaque.
// Example error message:
// Not allowed to load local resource:
// file:///.../src/content/test/data/site_isolation/png-corp.png,
// source: file:///...src/content/test/data/title2.html
//
// OTOH, this restriction can be relaxed by 1) the --disable-web-security
// switch (this is what this test suite is doing) or 2) the following Android
// WebView API: android.webkit.WebSettings.setAllowFileAccess. This is why
// the test asserts below that the access is successful.
RenderFrameHost* main_frame = shell()->web_contents()->GetPrimaryMainFrame();
RenderFrameHost* child_frame = ChildFrameAt(main_frame, 0);
const char kScriptTemplateToTriggerSubresourceFetch[] = R"(
new Promise(function (resolve, reject) {
var img = document.createElement('img');
img.src = $1;
img.onload = _ => resolve('OK');
img.onerror = e => resolve('ERR: ' + e);
});
)";
GURL img_url = GetTestUrl("site_isolation", "png-corp.png");
EXPECT_EQ("OK", EvalJs(child_frame,
JsReplace(kScriptTemplateToTriggerSubresourceFetch,
img_url)));
}
IN_PROC_BROWSER_TEST_F(FileURLLoaderFactoryBrowserTest, LastModified) {
// Create a temporary file with an arbitrary last-modified timestamp.
const char kLastModified[] = "1994-11-15T12:45:26.000Z";
base::FilePath path;
{
base::ScopedAllowBlockingForTesting allow_blocking;
ASSERT_TRUE(base::CreateTemporaryFile(&path));
base::Time last_modified_time;
ASSERT_TRUE(base::Time::FromString(kLastModified, &last_modified_time));
ASSERT_TRUE(base::TouchFile(path, /*last_accessed=*/base::Time::Now(),
last_modified_time));
}
EXPECT_TRUE(NavigateToURL(shell(), net::FilePathToFileURL(path)));
// Verify the syntax
EXPECT_THAT(content::EvalJs(shell()->web_contents(), "document.lastModified")
.ExtractString(),
testing::MatchesRegex(R"(\d\d/\d\d/\d\d\d\d \d\d:\d\d:\d\d)"));
// Verify the value (it's in local time, so we parse it and convert it in JS
// to get a representation in UTC).
EXPECT_EQ(kLastModified,
content::EvalJs(shell()->web_contents(),
"new Date(document.lastModified).toISOString()"));
}
} // namespace
} // namespace content