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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/files/file_path.h"
#include "base/strings/stringprintf.h"
#include "chrome/browser/extensions/extension_apitest.h"
#include "chrome/browser/extensions/test_extension_dir.h"
#include "chrome/browser/ui/browser_navigator_params.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/test/base/ui_test_utils.h"
#include "content/public/browser/web_contents.h"
#include "content/public/test/browser_test_utils.h"
#include "extensions/common/extension.h"
#include "net/dns/mock_host_resolver.h"
#include "net/test/embedded_test_server/embedded_test_server.h"
namespace extensions {
namespace {
// JavaScript snippet which performs a fetch given a URL expression to be
// substituted as %s, then sends back the fetched content using the
// domAutomationController.
const char* kFetchScript =
"fetch(%s).then(function(result) {\n"
" return result.text();\n"
"}).then(function(text) {\n"
" window.domAutomationController.send(text);\n"
"}).catch(function(err) {\n"
" window.domAutomationController.send(String(err));\n"
"});\n";
class ExtensionFetchTest : public ExtensionApiTest {
protected:
// Writes an empty background page and a text file called "text" with content
// "text content", then loads and returns the extension. |dir| must already
// have a manifest.
const Extension* WriteFilesAndLoadTestExtension(TestExtensionDir* dir) {
dir->WriteFile(FILE_PATH_LITERAL("text"), "text content");
dir->WriteFile(FILE_PATH_LITERAL("bg.js"), "");
return LoadExtension(dir->unpacked_path());
}
// Returns |kFetchScript| with |url_expression| substituted as its test URL.
std::string GetFetchScript(const std::string& url_expression) {
return base::StringPrintf(kFetchScript, url_expression.c_str());
}
// Returns |url| as a string surrounded by single quotes, for passing to
// JavaScript as a string literal.
std::string GetQuotedURL(const GURL& url) {
return base::StringPrintf("'%s'", url.spec().c_str());
}
// Like GetQuotedURL(), but fetching the URL from the test server's |host|
// and |path|.
std::string GetQuotedTestServerURL(const std::string& host,
const std::string& path) {
return GetQuotedURL(embedded_test_server()->GetURL(host, path));
}
// Opens a tab, puts it in the foreground, navigates it to |url| then returns
// its WebContents.
content::WebContents* CreateAndNavigateTab(const GURL& url) {
chrome::NavigateParams params(browser(), url, ui::PAGE_TRANSITION_LINK);
params.disposition = NEW_FOREGROUND_TAB;
ui_test_utils::NavigateToURL(¶ms);
return browser()->tab_strip_model()->GetActiveWebContents();
}
private:
void SetUpOnMainThread() override {
ExtensionApiTest::SetUpOnMainThread();
host_resolver()->AddRule("*", "127.0.0.1");
ASSERT_TRUE(StartEmbeddedTestServer());
}
};
IN_PROC_BROWSER_TEST_F(ExtensionFetchTest, ExtensionCanFetchExtensionResource) {
TestExtensionDir dir;
dir.WriteManifestWithSingleQuotes(
"{"
"'background': {'scripts': ['bg.js']},"
"'manifest_version': 2,"
"'name': 'ExtensionCanFetchExtensionResource',"
"'version': '1'"
"}");
const Extension* extension = WriteFilesAndLoadTestExtension(&dir);
ASSERT_TRUE(extension);
EXPECT_EQ(
"text content",
ExecuteScriptInBackgroundPage(
extension->id(), GetFetchScript("chrome.runtime.getURL('text')")));
}
IN_PROC_BROWSER_TEST_F(ExtensionFetchTest,
ExtensionCanFetchHostedResourceWithHostPermissions) {
TestExtensionDir dir;
dir.WriteManifestWithSingleQuotes(
"{"
"'background': {'scripts': ['bg.js']},"
"'manifest_version': 2,"
"'name': 'ExtensionCanFetchHostedResourceWithHostPermissions',"
"'permissions': ['http://example.com/*'],"
"'version': '1'"
"}");
const Extension* extension = WriteFilesAndLoadTestExtension(&dir);
ASSERT_TRUE(extension);
EXPECT_EQ("Hello!", ExecuteScriptInBackgroundPage(
extension->id(),
GetFetchScript(GetQuotedTestServerURL(
"example.com", "/extensions/test_file.txt"))));
}
IN_PROC_BROWSER_TEST_F(
ExtensionFetchTest,
ExtensionCannotFetchHostedResourceWithoutHostPermissions) {
TestExtensionDir dir;
dir.WriteManifestWithSingleQuotes(
"{"
"'background': {'scripts': ['bg.js']},"
"'manifest_version': 2,"
"'name': 'ExtensionCannotFetchHostedResourceWithoutHostPermissions',"
"'version': '1'"
"}");
const Extension* extension = WriteFilesAndLoadTestExtension(&dir);
ASSERT_TRUE(extension);
// TODO(kalman): Another test would be to configure the test server to work
// with CORS, and test that the fetch succeeds.
EXPECT_EQ(
"TypeError: Failed to fetch",
ExecuteScriptInBackgroundPage(
extension->id(), GetFetchScript(GetQuotedTestServerURL(
"example.com", "/extensions/test_file.txt"))));
}
IN_PROC_BROWSER_TEST_F(ExtensionFetchTest,
HostCanFetchWebAccessibleExtensionResource) {
TestExtensionDir dir;
dir.WriteManifestWithSingleQuotes(
"{"
"'background': {'scripts': ['bg.js']},"
"'manifest_version': 2,"
"'name': 'HostCanFetchWebAccessibleExtensionResource',"
"'version': '1',"
"'web_accessible_resources': ['text']"
"}");
const Extension* extension = WriteFilesAndLoadTestExtension(&dir);
ASSERT_TRUE(extension);
content::WebContents* empty_tab = CreateAndNavigateTab(
embedded_test_server()->GetURL("example.com", "/empty.html"));
// TODO(kalman): Test this from a content script too.
std::string fetch_result;
ASSERT_TRUE(content::ExecuteScriptAndExtractString(
empty_tab,
GetFetchScript(GetQuotedURL(extension->GetResourceURL("text"))),
&fetch_result));
EXPECT_EQ("text content", fetch_result);
}
IN_PROC_BROWSER_TEST_F(ExtensionFetchTest,
HostCannotFetchNonWebAccessibleExtensionResource) {
TestExtensionDir dir;
dir.WriteManifestWithSingleQuotes(
"{"
"'background': {'scripts': ['bg.js']},"
"'manifest_version': 2,"
"'name': 'HostCannotFetchNonWebAccessibleExtensionResource',"
"'version': '1'"
"}");
const Extension* extension = WriteFilesAndLoadTestExtension(&dir);
ASSERT_TRUE(extension);
content::WebContents* empty_tab = CreateAndNavigateTab(
embedded_test_server()->GetURL("example.com", "/empty.html"));
// TODO(kalman): Test this from a content script too.
std::string fetch_result;
ASSERT_TRUE(content::ExecuteScriptAndExtractString(
empty_tab,
GetFetchScript(GetQuotedURL(extension->GetResourceURL("text"))),
&fetch_result));
EXPECT_EQ("TypeError: Failed to fetch", fetch_result);
}
} // namespace
} // namespace extensions
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