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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <string>
#include "base/base64.h"
#include "base/base_paths.h"
#include "base/files/file_util.h"
#include "base/path_service.h"
#include "base/strings/utf_string_conversions.h"
#include "base/test/metrics/histogram_tester.h"
#include "base/threading/thread_restrictions.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/permission_controller.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_utils.h"
#include "content/public/test/content_browser_test.h"
#include "content/public/test/content_browser_test_utils.h"
#include "content/public/test/permissions_test_utils.h"
#include "content/shell/browser/shell.h"
#include "net/test/embedded_test_server/embedded_test_server.h"
#include "third_party/blink/public/common/permissions/permission_utils.h"
#include "ui/base/clipboard/clipboard_buffer.h"
#include "ui/base/clipboard/file_info.h"
#include "ui/base/clipboard/scoped_clipboard_writer.h"
#include "ui/base/clipboard/test/test_clipboard.h"
#include "url/origin.h"
namespace content {
// End-to-end tests for clipboard file access.
class ClipboardHostImplBrowserTest : public ContentBrowserTest {
public:
struct File {
std::string name;
std::string type;
};
void SetUp() override {
ASSERT_TRUE(embedded_https_test_server().Start());
ui::TestClipboard::CreateForCurrentThread();
ContentBrowserTest::SetUp();
}
void TearDown() override { ContentBrowserTest::TearDown(); }
RenderFrameHost* GetRenderFrameHost() {
return ToRenderFrameHost(shell()->web_contents()).render_frame_host();
}
void CopyPasteFiles(std::vector<File> files) {
ASSERT_TRUE(NavigateToURL(
shell(), embedded_https_test_server().GetURL("/title1.html")));
// Create a promise that will resolve on paste with comma-separated
// '<name>:<type>:<b64-content>' of each file on the clipboard.
ASSERT_TRUE(
ExecJs(shell(),
"var p = new Promise((resolve, reject) => {"
" window.document.onpaste = async (event) => {"
" const data = event.clipboardData;"
" const files = [];"
" for (let i = 0; i < data.items.length; i++) {"
" if (data.items[i].kind != 'file') {"
" reject('The clipboard item[' + i +'] was of kind: ' +"
" data.items[i].kind + '. Expected file.');"
" }"
" files.push(data.files[i]);"
" }"
" const result = [];"
" for (let i = 0; i < files.length; i++) {"
" const file = files[i];"
" const buf = await file.arrayBuffer();"
" const buf8 = new Uint8Array(buf);"
" const b64 = btoa(String.fromCharCode(...buf8));"
" result.push(file.name + ':' + file.type + ':' + b64);"
" }"
" resolve(result.join(','));"
" };"
"});"));
// Put files on clipboard.
base::FilePath source_root;
ASSERT_TRUE(
base::PathService::Get(base::DIR_SRC_TEST_DATA_ROOT, &source_root));
std::vector<std::string> expected;
std::vector<ui::FileInfo> file_infos;
std::vector<std::u16string> file_paths;
{
base::ScopedAllowBlockingForTesting allow_blocking;
for (const auto& f : files) {
base::FilePath file =
source_root.AppendASCII("content/test/data/clipboard")
.AppendASCII(f.name);
std::string buf;
EXPECT_TRUE(base::ReadFileToString(file, &buf));
auto b64 = base::Base64Encode(base::as_byte_span(buf));
expected.push_back(base::JoinString({f.name, f.type, b64}, ":"));
file_infos.push_back(ui::FileInfo(file, base::FilePath()));
file_paths.push_back(file.AsUTF16Unsafe());
}
ui::ScopedClipboardWriter writer(ui::ClipboardBuffer::kCopyPaste);
// Write both filenames (text/uri-list) and the full file paths
// (text/plain), and validate in the test that only the Files are exposed
// in the renderer (item.kind == 'file') and the String full paths are not
// included (http://crbug.com/1214108).
writer.WriteFilenames(ui::FileInfosToURIList(file_infos));
writer.WriteText(base::JoinString(file_paths, u"\n"));
}
// Send paste event and wait for JS promise to resolve with file data.
shell()->web_contents()->Paste();
EXPECT_EQ(base::JoinString(expected, ","), EvalJs(shell(), "p"));
}
};
IN_PROC_BROWSER_TEST_F(ClipboardHostImplBrowserTest, TextFile) {
CopyPasteFiles({File{"hello.txt", "text/plain"}});
}
IN_PROC_BROWSER_TEST_F(ClipboardHostImplBrowserTest, ImageFile) {
CopyPasteFiles({File{"small.jpg", "image/jpeg"}});
}
IN_PROC_BROWSER_TEST_F(ClipboardHostImplBrowserTest, Empty) {
CopyPasteFiles({});
}
IN_PROC_BROWSER_TEST_F(ClipboardHostImplBrowserTest, Multiple) {
CopyPasteFiles({
File{"hello.txt", "text/plain"},
File{"small.jpg", "image/jpeg"},
});
}
class ClipboardDocUrlBrowserTestP : public ClipboardHostImplBrowserTest,
public testing::WithParamInterface<bool> {
public:
ClipboardDocUrlBrowserTestP() = default;
};
INSTANTIATE_TEST_SUITE_P(ClipboardDocUrlBrowserTests,
ClipboardDocUrlBrowserTestP,
testing::Values(true, false));
IN_PROC_BROWSER_TEST_P(ClipboardDocUrlBrowserTestP, HtmlUrl) {
GURL main_url(embedded_https_test_server().GetURL("/title1.html"));
ASSERT_TRUE(NavigateToURL(shell(), main_url));
PermissionController* permission_controller =
GetRenderFrameHost()->GetBrowserContext()->GetPermissionController();
url::Origin origin = url::Origin::Create(main_url);
SetPermissionControllerOverrideForDevTools(
permission_controller, origin,
blink::PermissionType::CLIPBOARD_SANITIZED_WRITE,
blink::mojom::PermissionStatus::GRANTED);
base::RunLoop loop;
ASSERT_TRUE(ExecJs(
shell(),
" const format1 = 'text/html';"
" const textInput = '<p>Hello</p>';"
" const blobInput1 = new Blob([textInput], {type: format1});"
" const clipboardItemInput = new ClipboardItem({[format1]: blobInput1});"
" navigator.clipboard.write([clipboardItemInput]);"));
loop.RunUntilIdle();
// Read HTML format to check that the URL is populated correctly during
// write().
std::u16string html;
std::string src_url;
uint32_t fragment_start;
uint32_t fragment_end;
ui::Clipboard::GetForCurrentThread()->ReadHTML(
ui::ClipboardBuffer::kCopyPaste, nullptr, &html, &src_url,
&fragment_start, &fragment_end);
EXPECT_EQ(src_url, main_url.spec());
}
class ClipboardBrowserTest : public ClipboardHostImplBrowserTest {
public:
ClipboardBrowserTest() = default;
void SetPermissionOverrideForAsyncClipboardTests(
blink::mojom::PermissionStatus status) {
content::PermissionController* permission_controller =
GetRenderFrameHost()->GetBrowserContext()->GetPermissionController();
url::Origin origin = url::Origin::Create(
embedded_https_test_server().GetURL("/title1.html"));
SetPermissionControllerOverrideForDevTools(
permission_controller, origin,
blink::PermissionType::CLIPBOARD_READ_WRITE, status);
}
void SetPermissionOverrideForStrictlyProcessedWriteTests(
blink::mojom::PermissionStatus status) {
content::PermissionController* permission_controller =
GetRenderFrameHost()->GetBrowserContext()->GetPermissionController();
url::Origin origin = url::Origin::Create(
embedded_https_test_server().GetURL("/title1.html"));
SetPermissionControllerOverrideForDevTools(
permission_controller, origin,
blink::PermissionType::CLIPBOARD_SANITIZED_WRITE, status);
}
void NavigateAndSetFocusToPage() {
ASSERT_TRUE(NavigateToURL(
shell(), embedded_https_test_server().GetURL("/title1.html")));
shell()->web_contents()->Focus();
}
};
IN_PROC_BROWSER_TEST_F(ClipboardBrowserTest, EmptyClipboard) {
base::HistogramTester histogram_tester;
NavigateAndSetFocusToPage();
SetPermissionOverrideForAsyncClipboardTests(
blink::mojom::PermissionStatus::GRANTED);
ui::Clipboard::GetForCurrentThread()->Clear(ui::ClipboardBuffer::kCopyPaste);
ASSERT_TRUE(ExecJs(shell(), " navigator.clipboard.read()"));
content::FetchHistogramsFromChildProcesses();
histogram_tester.ExpectBucketCount("Blink.Clipboard.Read.NumberOfFormats", 0,
1);
}
IN_PROC_BROWSER_TEST_F(ClipboardBrowserTest, NumberOfFormatsOnRead) {
base::HistogramTester histogram_tester;
NavigateAndSetFocusToPage();
SetPermissionOverrideForAsyncClipboardTests(
blink::mojom::PermissionStatus::GRANTED);
ui::Clipboard::GetForCurrentThread()->Clear(ui::ClipboardBuffer::kCopyPaste);
ASSERT_TRUE(ExecJs(shell(), " navigator.clipboard.read()"));
SetPermissionOverrideForStrictlyProcessedWriteTests(
blink::mojom::PermissionStatus::GRANTED);
ASSERT_TRUE(ExecJs(
shell(),
" const format1 = 'text/html';"
" const textInput = '<p>Hello</p>';"
" const blobInput1 = new Blob([textInput], {type: format1});"
" const clipboardItemInput = new ClipboardItem({[format1]: blobInput1});"
" navigator.clipboard.write([clipboardItemInput]);"));
ASSERT_TRUE(ExecJs(shell(), " navigator.clipboard.read()"));
content::FetchHistogramsFromChildProcesses();
histogram_tester.ExpectBucketCount("Blink.Clipboard.Read.NumberOfFormats", 0,
1);
histogram_tester.ExpectBucketCount("Blink.Clipboard.Read.NumberOfFormats", 1,
1);
}
} // namespace content
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