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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "sandbox/src/policy_engine_params.h"
#include "sandbox/src/policy_engine_processor.h"
#include "testing/gtest/include/gtest/gtest.h"
#define POLPARAMS_BEGIN(x) sandbox::ParameterSet x[] = {
#define POLPARAM(p) sandbox::ParamPickerMake(p),
#define POLPARAMS_END }
namespace sandbox {
bool SetupNtdllImports();
TEST(PolicyEngineTest, Rules1) {
SetupNtdllImports();
// Construct two policy rules that say:
//
// #1
// If the path is c:\\documents and settings\\* AND
// If the creation mode is 'open existing' AND
// If the security descriptor is null THEN
// Ask the broker.
//
// #2
// If the security descriptor is null AND
// If the path ends with *.txt AND
// If the creation mode is not 'create new' THEN
// return Access Denied.
enum FileCreateArgs {
FileNameArg,
CreationDispositionArg,
FlagsAndAttributesArg,
SecurityAttributes
};
const size_t policy_sz = 1024;
PolicyBuffer* policy = reinterpret_cast<PolicyBuffer*>(new char[policy_sz]);
OpcodeFactory opcode_maker(policy, policy_sz - 0x40);
// Add rule set #1
opcode_maker.MakeOpWStringMatch(FileNameArg,
L"c:\\documents and settings\\",
0, CASE_INSENSITIVE, kPolNone);
opcode_maker.MakeOpNumberMatch(CreationDispositionArg, OPEN_EXISTING,
kPolNone);
opcode_maker.MakeOpVoidPtrMatch(SecurityAttributes, (void*)NULL,
kPolNone);
opcode_maker.MakeOpAction(ASK_BROKER, kPolNone);
// Add rule set #2
opcode_maker.MakeOpWStringMatch(FileNameArg, L".TXT",
kSeekToEnd, CASE_INSENSITIVE, kPolNone);
opcode_maker.MakeOpNumberMatch(CreationDispositionArg, CREATE_NEW,
kPolNegateEval);
opcode_maker.MakeOpAction(FAKE_ACCESS_DENIED, kPolNone);
policy->opcode_count = 7;
wchar_t* filename = L"c:\\Documents and Settings\\Microsoft\\BLAH.txt";
unsigned long creation_mode = OPEN_EXISTING;
unsigned long flags = FILE_ATTRIBUTE_NORMAL;
void* security_descriptor = NULL;
POLPARAMS_BEGIN(eval_params)
POLPARAM(filename)
POLPARAM(creation_mode)
POLPARAM(flags)
POLPARAM(security_descriptor)
POLPARAMS_END;
PolicyResult pr;
PolicyProcessor pol_ev(policy);
// Test should match the first rule set.
pr = pol_ev.Evaluate(kShortEval, eval_params, _countof(eval_params));
EXPECT_EQ(POLICY_MATCH, pr);
EXPECT_EQ(ASK_BROKER, pol_ev.GetAction());
// Test should still match the first rule set.
pr = pol_ev.Evaluate(kShortEval, eval_params, _countof(eval_params));
EXPECT_EQ(POLICY_MATCH, pr);
EXPECT_EQ(ASK_BROKER, pol_ev.GetAction());
// Changing creation_mode such that evaluation should not match any rule.
creation_mode = CREATE_NEW;
pr = pol_ev.Evaluate(kShortEval, eval_params, _countof(eval_params));
EXPECT_EQ(NO_POLICY_MATCH, pr);
// Changing creation_mode such that evaluation should match rule #2.
creation_mode = OPEN_ALWAYS;
pr = pol_ev.Evaluate(kShortEval, eval_params, _countof(eval_params));
EXPECT_EQ(POLICY_MATCH, pr);
EXPECT_EQ(FAKE_ACCESS_DENIED, pol_ev.GetAction());
delete [] reinterpret_cast<char*>(policy);
}
} // namespace sandbox
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