Added libdisasm to the repository. This library is no longer under development so there
is no reason not to keep it locally. Implemented a basic disassembler which can be used to scan bytecode for interesting conditions. This should be pretty easy to add to for things other than exploitability if there is a desire. This also adds several tests to the windows exploitability ranking code to take advantage of the disassembler for x86 code. BUG=None TEST=DisassemblerX86Test.* Review URL: http://breakpad.appspot.com/203001 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@705 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
cdn@chromium.org
213
src/processor/exploitability_unittest.cc
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213
src/processor/exploitability_unittest.cc
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <stdlib.h>
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#include <unistd.h>
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#include <string>
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#include "breakpad_googletest_includes.h"
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#include "google_breakpad/processor/basic_source_line_resolver.h"
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#include "google_breakpad/processor/call_stack.h"
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#include "google_breakpad/processor/code_module.h"
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#include "google_breakpad/processor/code_modules.h"
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#include "google_breakpad/processor/minidump.h"
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#include "google_breakpad/processor/minidump_processor.h"
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#include "google_breakpad/processor/process_state.h"
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#include "google_breakpad/processor/stack_frame.h"
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#include "google_breakpad/processor/symbol_supplier.h"
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namespace google_breakpad {
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class MockMinidump : public Minidump {
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public:
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MockMinidump() : Minidump("") {
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}
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MOCK_METHOD0(Read, bool());
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MOCK_CONST_METHOD0(path, string());
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MOCK_CONST_METHOD0(header, const MDRawHeader*());
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MOCK_METHOD0(GetThreadList, MinidumpThreadList*());
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};
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}
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namespace {
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using google_breakpad::BasicSourceLineResolver;
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using google_breakpad::CallStack;
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using google_breakpad::CodeModule;
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using google_breakpad::MinidumpProcessor;
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using google_breakpad::MinidumpThreadList;
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using google_breakpad::MinidumpThread;
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using google_breakpad::MockMinidump;
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using google_breakpad::ProcessState;
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using google_breakpad::SymbolSupplier;
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using google_breakpad::SystemInfo;
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using std::string;
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class TestSymbolSupplier : public SymbolSupplier {
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public:
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TestSymbolSupplier() : interrupt_(false) {}
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virtual SymbolResult GetSymbolFile(const CodeModule *module,
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const SystemInfo *system_info,
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string *symbol_file);
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virtual SymbolResult GetSymbolFile(const CodeModule *module,
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const SystemInfo *system_info,
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string *symbol_file,
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string *symbol_data);
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// When set to true, causes the SymbolSupplier to return INTERRUPT
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void set_interrupt(bool interrupt) { interrupt_ = interrupt; }
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private:
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bool interrupt_;
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};
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SymbolSupplier::SymbolResult TestSymbolSupplier::GetSymbolFile(
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const CodeModule *module,
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const SystemInfo *system_info,
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string *symbol_file) {
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if (interrupt_) {
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return INTERRUPT;
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}
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return NOT_FOUND;
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}
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SymbolSupplier::SymbolResult TestSymbolSupplier::GetSymbolFile(
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const CodeModule *module,
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const SystemInfo *system_info,
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string *symbol_file,
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string *symbol_data) {
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return GetSymbolFile(module, system_info, symbol_file);
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}
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TEST(ExploitabilityTest, TestWindowsEngine) {
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TestSymbolSupplier supplier;
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BasicSourceLineResolver resolver;
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MinidumpProcessor processor(&supplier, &resolver, true);
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ProcessState state;
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string minidump_file = string(getenv("srcdir") ? getenv("srcdir") : ".") +
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"/src/processor/testdata/ascii_read_av.dmp";
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ASSERT_EQ(processor.Process(minidump_file, &state),
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google_breakpad::PROCESS_OK);
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ASSERT_EQ(google_breakpad::EXPLOITABILITY_LOW,
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state.exploitability());
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minidump_file = string(getenv("srcdir") ? getenv("srcdir") : ".") +
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"/src/processor/testdata/ascii_read_av_block_write.dmp";
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ASSERT_EQ(processor.Process(minidump_file, &state),
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google_breakpad::PROCESS_OK);
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ASSERT_EQ(google_breakpad::EXPLOITABILITY_HIGH,
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state.exploitability());
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minidump_file = string(getenv("srcdir") ? getenv("srcdir") : ".") +
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"/src/processor/testdata/ascii_read_av_clobber_write.dmp";
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ASSERT_EQ(processor.Process(minidump_file, &state),
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google_breakpad::PROCESS_OK);
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ASSERT_EQ(google_breakpad::EXPLOITABILITY_LOW,
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state.exploitability());
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minidump_file = string(getenv("srcdir") ? getenv("srcdir") : ".") +
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"/src/processor/testdata/ascii_read_av_conditional.dmp";
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ASSERT_EQ(processor.Process(minidump_file, &state),
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google_breakpad::PROCESS_OK);
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ASSERT_EQ(google_breakpad::EXPLOITABILITY_LOW,
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state.exploitability());
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minidump_file = string(getenv("srcdir") ? getenv("srcdir") : ".") +
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"/src/processor/testdata/ascii_read_av_then_jmp.dmp";
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ASSERT_EQ(processor.Process(minidump_file, &state),
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google_breakpad::PROCESS_OK);
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ASSERT_EQ(google_breakpad::EXPLOITABILITY_HIGH,
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state.exploitability());
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minidump_file = string(getenv("srcdir") ? getenv("srcdir") : ".") +
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"/src/processor/testdata/ascii_read_av_xchg_write.dmp";
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ASSERT_EQ(processor.Process(minidump_file, &state),
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google_breakpad::PROCESS_OK);
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ASSERT_EQ(google_breakpad::EXPLOITABILITY_HIGH,
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state.exploitability());
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minidump_file = string(getenv("srcdir") ? getenv("srcdir") : ".") +
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"/src/processor/testdata/ascii_write_av.dmp";
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ASSERT_EQ(processor.Process(minidump_file, &state),
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google_breakpad::PROCESS_OK);
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ASSERT_EQ(google_breakpad::EXPLOITABLITY_MEDIUM,
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state.exploitability());
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minidump_file = string(getenv("srcdir") ? getenv("srcdir") : ".") +
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"/src/processor/testdata/ascii_write_av_arg_to_call.dmp";
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ASSERT_EQ(processor.Process(minidump_file, &state),
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google_breakpad::PROCESS_OK);
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ASSERT_EQ(google_breakpad::EXPLOITABLITY_MEDIUM,
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state.exploitability());
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minidump_file = string(getenv("srcdir") ? getenv("srcdir") : ".") +
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"/src/processor/testdata/null_read_av.dmp";
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ASSERT_EQ(processor.Process(minidump_file, &state),
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google_breakpad::PROCESS_OK);
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ASSERT_EQ(google_breakpad::EXPLOITABILITY_NONE,
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state.exploitability());
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minidump_file = string(getenv("srcdir") ? getenv("srcdir") : ".") +
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"/src/processor/testdata/null_write_av.dmp";
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ASSERT_EQ(processor.Process(minidump_file, &state),
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google_breakpad::PROCESS_OK);
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ASSERT_EQ(google_breakpad::EXPLOITABILITY_NONE,
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state.exploitability());
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minidump_file = string(getenv("srcdir") ? getenv("srcdir") : ".") +
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"/src/processor/testdata/stack_exhaustion.dmp";
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ASSERT_EQ(processor.Process(minidump_file, &state),
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google_breakpad::PROCESS_OK);
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ASSERT_EQ(google_breakpad::EXPLOITABILITY_NONE,
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state.exploitability());
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minidump_file = string(getenv("srcdir") ? getenv("srcdir") : ".") +
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"/src/processor/testdata/exec_av_on_stack.dmp";
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ASSERT_EQ(processor.Process(minidump_file, &state),
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google_breakpad::PROCESS_OK);
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ASSERT_EQ(google_breakpad::EXPLOITABILITY_HIGH,
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state.exploitability());
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}
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}
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