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// Copyright (c) 2012 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.
#import <Cocoa/Cocoa.h>
#include "base/files/file_util.h"
#include "base/files/scoped_file.h"
#include "base/logging.h"
#include "base/strings/sys_string_conversions.h"
#include "content/common/sandbox_mac.h"
#include "content/common/sandbox_mac_unittest_helper.h"
#include "testing/gtest/include/gtest/gtest.h"
#if defined(USE_OPENSSL)
#include <openssl/rand.h>
#include "crypto/openssl_util.h"
#else
#include "crypto/nss_util.h"
#endif
namespace content {
//--------------------- Clipboard Sandboxing ----------------------
// Test case for checking sandboxing of clipboard access.
class MacSandboxedClipboardTestCase : public MacSandboxTestCase {
public:
MacSandboxedClipboardTestCase();
~MacSandboxedClipboardTestCase() override;
bool SandboxedTest() override;
void SetTestData(const char* test_data) override;
private:
NSString* clipboard_name_;
};
REGISTER_SANDBOX_TEST_CASE(MacSandboxedClipboardTestCase);
MacSandboxedClipboardTestCase::MacSandboxedClipboardTestCase() :
clipboard_name_(nil) {}
MacSandboxedClipboardTestCase::~MacSandboxedClipboardTestCase() {
[clipboard_name_ release];
}
bool MacSandboxedClipboardTestCase::SandboxedTest() {
// Shouldn't be able to open the pasteboard in the sandbox.
if ([clipboard_name_ length] == 0) {
LOG(ERROR) << "Clipboard name is empty";
return false;
}
NSPasteboard* pb = [NSPasteboard pasteboardWithName:clipboard_name_];
if (pb != nil) {
LOG(ERROR) << "Was able to access named clipboard";
return false;
}
pb = [NSPasteboard generalPasteboard];
if (pb != nil) {
LOG(ERROR) << "Was able to access system clipboard";
return false;
}
return true;
}
void MacSandboxedClipboardTestCase::SetTestData(const char* test_data) {
clipboard_name_ = [base::SysUTF8ToNSString(test_data) retain];
}
TEST_F(MacSandboxTest, ClipboardAccess) {
NSPasteboard* pb = [NSPasteboard pasteboardWithUniqueName];
EXPECT_EQ([[pb types] count], 0U);
std::string pasteboard_name = base::SysNSStringToUTF8([pb name]);
EXPECT_TRUE(RunTestInAllSandboxTypes("MacSandboxedClipboardTestCase",
pasteboard_name.c_str()));
// After executing the test, the clipboard should still be empty.
EXPECT_EQ([[pb types] count], 0U);
}
//--------------------- File Access Sandboxing ----------------------
// Test case for checking sandboxing of filesystem apis.
class MacSandboxedFileAccessTestCase : public MacSandboxTestCase {
public:
bool SandboxedTest() override;
};
REGISTER_SANDBOX_TEST_CASE(MacSandboxedFileAccessTestCase);
bool MacSandboxedFileAccessTestCase::SandboxedTest() {
base::ScopedFD fdes(HANDLE_EINTR(open("/etc/passwd", O_RDONLY)));
return !fdes.is_valid();
}
TEST_F(MacSandboxTest, FileAccess) {
EXPECT_TRUE(RunTestInAllSandboxTypes("MacSandboxedFileAccessTestCase", NULL));
}
//--------------------- /dev/urandom Sandboxing ----------------------
// /dev/urandom is available to any sandboxed process.
class MacSandboxedUrandomTestCase : public MacSandboxTestCase {
public:
bool SandboxedTest() override;
};
REGISTER_SANDBOX_TEST_CASE(MacSandboxedUrandomTestCase);
bool MacSandboxedUrandomTestCase::SandboxedTest() {
base::ScopedFD fdes(HANDLE_EINTR(open("/dev/urandom", O_RDONLY)));
// Opening /dev/urandom succeeds under the sandbox.
if (!fdes.is_valid())
return false;
char buf[16];
int rc = HANDLE_EINTR(read(fdes.get(), buf, sizeof(buf)));
return rc == sizeof(buf);
}
TEST_F(MacSandboxTest, UrandomAccess) {
EXPECT_TRUE(RunTestInAllSandboxTypes("MacSandboxedUrandomTestCase", NULL));
}
#if defined(USE_OPENSSL)
//--------------------- OpenSSL Sandboxing ----------------------
// Test case for checking sandboxing of OpenSSL initialization.
class MacSandboxedOpenSSLTestCase : public MacSandboxTestCase {
public:
bool SandboxedTest() override;
};
REGISTER_SANDBOX_TEST_CASE(MacSandboxedOpenSSLTestCase);
bool MacSandboxedOpenSSLTestCase::SandboxedTest() {
crypto::EnsureOpenSSLInit();
// Ensure that RAND_bytes is functional within the sandbox.
uint8_t byte;
return RAND_bytes(&byte, 1) == 1;
}
TEST_F(MacSandboxTest, OpenSSLAccess) {
EXPECT_TRUE(RunTestInAllSandboxTypes("MacSandboxedOpenSSLTestCase", NULL));
}
#else // !defined(USE_OPENSSL)
//--------------------- NSS Sandboxing ----------------------
// Test case for checking sandboxing of NSS initialization.
class MacSandboxedNSSTestCase : public MacSandboxTestCase {
public:
bool SandboxedTest() override;
};
REGISTER_SANDBOX_TEST_CASE(MacSandboxedNSSTestCase);
bool MacSandboxedNSSTestCase::SandboxedTest() {
// If NSS cannot read from /dev/urandom, NSS initialization will call abort(),
// which will cause this test case to fail.
crypto::ForceNSSNoDBInit();
crypto::EnsureNSSInit();
return true;
}
TEST_F(MacSandboxTest, NSSAccess) {
EXPECT_TRUE(RunTestInAllSandboxTypes("MacSandboxedNSSTestCase", NULL));
}
#endif // defined(USE_OPENSSL)
} // namespace content
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