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ntdll/tests: Implement tests for data execution prevention.

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Michael Karcher 2009-08-14 00:04:42 +02:00 committed by Alexandre Julliard
parent cde2f1a09e
commit c3c712c17f
1 changed files with 177 additions and 12 deletions
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189
dlls/ntdll/tests/exception.c
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@ -47,8 +47,18 @@ static PVOID (WINAPI *pRtlAddVectoredExceptionHandler)(ULONG first, PVECTORE
static ULONG (WINAPI *pRtlRemoveVectoredExceptionHandler)(PVOID handler);
static NTSTATUS (WINAPI *pNtReadVirtualMemory)(HANDLE, const void*, void*, SIZE_T, SIZE_T*);
static NTSTATUS (WINAPI *pNtTerminateProcess)(HANDLE handle, LONG exit_code);
static NTSTATUS (WINAPI *pNtQueryInformationProcess)(HANDLE, PROCESSINFOCLASS, PVOID, ULONG, PULONG);
static NTSTATUS (WINAPI *pNtSetInformationProcess)(HANDLE, PROCESSINFOCLASS, PVOID, ULONG);
#ifdef __i386__
#ifndef __WINE_WINTRNL_H
#define ProcessExecuteFlags 0x22
#define MEM_EXECUTE_OPTION_DISABLE 0x01
#define MEM_EXECUTE_OPTION_ENABLE 0x02
#define MEM_EXECUTE_OPTION_PERMANENT 0x08
#endif
static int my_argc;
static char** my_argv;
static int test_stage;
@ -183,23 +193,30 @@ static int got_exception;
static BOOL have_vectored_api;
static void run_exception_test(void *handler, const void* context,
const void *code, unsigned int code_size)
const void *code, unsigned int code_size,
DWORD access)
{
struct {
EXCEPTION_REGISTRATION_RECORD frame;
const void *context;
} exc_frame;
void (*func)(void) = code_mem;
DWORD oldaccess, oldaccess2;
exc_frame.frame.Handler = handler;
exc_frame.frame.Prev = pNtCurrentTeb()->Tib.ExceptionList;
exc_frame.context = context;
memcpy(code_mem, code, code_size);
if(access)
VirtualProtect(code_mem, code_size, access, &oldaccess);
pNtCurrentTeb()->Tib.ExceptionList = &exc_frame.frame;
func();
pNtCurrentTeb()->Tib.ExceptionList = exc_frame.frame.Prev;
if(access)
VirtualProtect(code_mem, code_size, oldaccess, &oldaccess2);
}
static LONG CALLBACK rtlraiseexception_vectored_handler(EXCEPTION_POINTERS *ExceptionInfo)
@ -397,7 +414,7 @@ static void test_prot_fault(void)
{
got_exception = 0;
run_exception_test(handler, &exceptions[i], &exceptions[i].code,
sizeof(exceptions[i].code));
sizeof(exceptions[i].code), 0);
if (!i && !got_exception)
{
trace( "No exception, assuming win9x, no point in testing further\n" );
@ -586,7 +603,7 @@ static void test_exceptions(void)
}
/* test handling of debug registers */
run_exception_test(dreg_handler, NULL, &segfault_code, sizeof(segfault_code));
run_exception_test(dreg_handler, NULL, &segfault_code, sizeof(segfault_code), 0);
ctx.ContextFlags = CONTEXT_DEBUG_REGISTERS;
res = pNtGetContextThread(GetCurrentThread(), &ctx);
@ -596,17 +613,17 @@ static void test_exceptions(void)
/* test single stepping behavior */
got_exception = 0;
run_exception_test(single_step_handler, NULL, &single_stepcode, sizeof(single_stepcode));
run_exception_test(single_step_handler, NULL, &single_stepcode, sizeof(single_stepcode), 0);
ok(got_exception == 3, "expected 3 single step exceptions, got %d\n", got_exception);
/* test alignment exceptions */
got_exception = 0;
run_exception_test(align_check_handler, NULL, align_check_code, sizeof(align_check_code));
run_exception_test(align_check_handler, NULL, align_check_code, sizeof(align_check_code), 0);
ok(got_exception == 0, "got %d alignment faults, expected 0\n", got_exception);
/* test direction flag */
got_exception = 0;
run_exception_test(direction_flag_handler, NULL, direction_flag_code, sizeof(direction_flag_code));
run_exception_test(direction_flag_handler, NULL, direction_flag_code, sizeof(direction_flag_code), 0);
ok(got_exception == 1, "got %d exceptions, expected 1\n", got_exception);
/* test single stepping over hardware breakpoint */
@ -618,11 +635,11 @@ static void test_exceptions(void)
ok( res == STATUS_SUCCESS, "NtSetContextThread faild with %x\n", res);
got_exception = 0;
run_exception_test(bpx_handler, NULL, dummy_code, sizeof(dummy_code));
run_exception_test(bpx_handler, NULL, dummy_code, sizeof(dummy_code), 0);
ok( got_exception == 4,"expected 4 exceptions, got %d\n", got_exception);
/* test int3 handling */
run_exception_test(int3_handler, NULL, int3_code, sizeof(int3_code));
run_exception_test(int3_handler, NULL, int3_code, sizeof(int3_code), 0);
}
static void test_debugger(void)
@ -828,7 +845,7 @@ static void test_simd_exceptions(void)
/* test if CPU & OS can do sse */
stage = 1;
got_exception = 0;
run_exception_test(simd_fault_handler, &stage, sse_check, sizeof(sse_check));
run_exception_test(simd_fault_handler, &stage, sse_check, sizeof(sse_check), 0);
if(got_exception) {
skip("system doesn't support SSE\n");
return;
@ -838,7 +855,7 @@ static void test_simd_exceptions(void)
stage = 2;
got_exception = 0;
run_exception_test(simd_fault_handler, &stage, simd_exception_test,
sizeof(simd_exception_test));
sizeof(simd_exception_test), 0);
ok( got_exception == 1, "got exception: %i, should be 1\n", got_exception);
}
@ -904,20 +921,163 @@ static void test_fpu_exceptions(void)
struct fpu_exception_info info;
memset(&info, 0, sizeof(info));
run_exception_test(fpu_exception_handler, &info, fpu_exception_test_ie, sizeof(fpu_exception_test_ie));
run_exception_test(fpu_exception_handler, &info, fpu_exception_test_ie, sizeof(fpu_exception_test_ie), 0);
ok(info.exception_code == EXCEPTION_FLT_STACK_CHECK,
"Got exception code %#x, expected EXCEPTION_FLT_STACK_CHECK\n", info.exception_code);
ok(info.exception_offset == 0x19, "Got exception offset %#x, expected 0x19\n", info.exception_offset);
ok(info.eip_offset == 0x1b, "Got EIP offset %#x, expected 0x1b\n", info.eip_offset);
memset(&info, 0, sizeof(info));
run_exception_test(fpu_exception_handler, &info, fpu_exception_test_de, sizeof(fpu_exception_test_de));
run_exception_test(fpu_exception_handler, &info, fpu_exception_test_de, sizeof(fpu_exception_test_de), 0);
ok(info.exception_code == EXCEPTION_FLT_DIVIDE_BY_ZERO,
"Got exception code %#x, expected EXCEPTION_FLT_DIVIDE_BY_ZERO\n", info.exception_code);
ok(info.exception_offset == 0x17, "Got exception offset %#x, expected 0x17\n", info.exception_offset);
ok(info.eip_offset == 0x19, "Got EIP offset %#x, expected 0x19\n", info.eip_offset);
}
struct dpe_exception_info {
BOOL exception_caught;
DWORD exception_info;
};
static DWORD dpe_exception_handler(EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher)
{
DWORD old_prot;
struct dpe_exception_info *info = *(struct dpe_exception_info **)(frame + 1);
ok(rec->ExceptionCode == EXCEPTION_ACCESS_VIOLATION,
"Exception code %08x\n", rec->ExceptionCode);
ok(rec->NumberParameters == 2,
"Parameter count: %d\n", rec->NumberParameters);
ok((LPVOID)rec->ExceptionInformation[1] == code_mem,
"Exception address: %p, expected %p\n",
(LPVOID)rec->ExceptionInformation[1], code_mem);
info->exception_info = rec->ExceptionInformation[0];
info->exception_caught = TRUE;
VirtualProtect(code_mem, 1, PAGE_EXECUTE_READWRITE, &old_prot);
return ExceptionContinueExecution;
}
static void test_dpe_exceptions(void)
{
static char single_ret[] = {0xC3};
struct dpe_exception_info info;
NTSTATUS stat;
BOOL has_hw_support;
BOOL is_permanent = FALSE, can_test_without = TRUE, can_test_with = TRUE;
DWORD val;
ULONG len;
/* Query DEP with len to small */
stat = pNtQueryInformationProcess(GetCurrentProcess(), ProcessExecuteFlags, &val, sizeof val - 1, &len);
if(stat == STATUS_INVALID_INFO_CLASS)
{
skip("This software platform does not support DEP\n");
return;
}
ok(stat == STATUS_INFO_LENGTH_MISMATCH, "buffer too small: %08x\n", stat);
/* Query DEP */
stat = pNtQueryInformationProcess(GetCurrentProcess(), ProcessExecuteFlags, &val, sizeof val, &len);
ok(stat == STATUS_SUCCESS, "querying DEP: status %08x\n", stat);
if(stat == STATUS_SUCCESS)
{
ok(len == sizeof val, "returned length: %d\n", len);
if(val & MEM_EXECUTE_OPTION_PERMANENT)
{
skip("toggling DEP impossible - status locked\n");
is_permanent = TRUE;
if(val & MEM_EXECUTE_OPTION_DISABLE)
can_test_without = FALSE;
else
can_test_with = FALSE;
}
}
if(!is_permanent)
{
/* Enable DEP */
val = MEM_EXECUTE_OPTION_DISABLE;
stat = pNtSetInformationProcess(GetCurrentProcess(), ProcessExecuteFlags, &val, sizeof val);
ok(stat == STATUS_SUCCESS, "enabling DEP: status %08x\n", stat);
}
if(can_test_with)
{
/* Try access to locked page with DEP on*/
info.exception_caught = FALSE;
run_exception_test(dpe_exception_handler, &info, single_ret, sizeof(single_ret), PAGE_NOACCESS);
ok(info.exception_caught == TRUE, "Execution of disabled memory suceeded\n");
ok(info.exception_info == EXCEPTION_READ_FAULT ||
info.exception_info == EXCEPTION_EXECUTE_FAULT,
"Access violation type: %08x\n", (unsigned)info.exception_info);
has_hw_support = info.exception_info == EXCEPTION_EXECUTE_FAULT;
trace("DEP hardware support: %s\n", has_hw_support?"Yes":"No");
/* Try execution of data with DEP on*/
info.exception_caught = FALSE;
run_exception_test(dpe_exception_handler, &info, single_ret, sizeof(single_ret), PAGE_READWRITE);
if(has_hw_support)
{
ok(info.exception_caught == TRUE, "Execution of data memory suceeded\n");
ok(info.exception_info == EXCEPTION_EXECUTE_FAULT,
"Access violation type: %08x\n", (unsigned)info.exception_info);
}
else
ok(info.exception_caught == FALSE, "Execution trapped without hardware support\n");
}
else
skip("DEP is in AlwaysOff state\n");
if(!is_permanent)
{
/* Disable DEP */
val = MEM_EXECUTE_OPTION_ENABLE;
stat = pNtSetInformationProcess(GetCurrentProcess(), ProcessExecuteFlags, &val, sizeof val);
ok(stat == STATUS_SUCCESS, "disabling DEP: status %08x\n", stat);
}
/* page is read without exec here */
if(can_test_without)
{
/* Try execution of data with DEP off */
info.exception_caught = FALSE;
run_exception_test(dpe_exception_handler, &info, single_ret, sizeof(single_ret), PAGE_READWRITE);
ok(info.exception_caught == FALSE, "Execution trapped with DEP turned off\n");
/* Try access to locked page with DEP off - error code is different than
with hardware DEP on */
info.exception_caught = FALSE;
run_exception_test(dpe_exception_handler, &info, single_ret, sizeof(single_ret), PAGE_NOACCESS);
ok(info.exception_caught == TRUE, "Execution of disabled memory suceeded\n");
ok(info.exception_info == EXCEPTION_READ_FAULT,
"Access violation type: %08x\n", (unsigned)info.exception_info);
}
else
skip("DEP is in AlwaysOn state\n");
if(!is_permanent)
{
/* Turn off DEP permanently */
val = MEM_EXECUTE_OPTION_ENABLE | MEM_EXECUTE_OPTION_PERMANENT;
stat = pNtSetInformationProcess(GetCurrentProcess(), ProcessExecuteFlags, &val, sizeof val);
ok(stat == STATUS_SUCCESS, "disabling DEP permanently: status %08x\n", stat);
}
/* Try to turn off DEP */
val = MEM_EXECUTE_OPTION_ENABLE;
stat = pNtSetInformationProcess(GetCurrentProcess(), ProcessExecuteFlags, &val, sizeof val);
ok(stat == STATUS_ACCESS_DENIED, "disabling DEP while permanent: status %08x\n", stat);
/* Try to turn on DEP */
val = MEM_EXECUTE_OPTION_DISABLE;
stat = pNtSetInformationProcess(GetCurrentProcess(), ProcessExecuteFlags, &val, sizeof val);
ok(stat == STATUS_ACCESS_DENIED, "enabling DEP while permanent: status %08x\n", stat);
}
#elif defined(__x86_64__)
#define UNW_FLAG_NHANDLER 0
@ -1215,6 +1375,10 @@ START_TEST(exception)
"RtlAddVectoredExceptionHandler" );
pRtlRemoveVectoredExceptionHandler = (void *)GetProcAddress( hntdll,
"RtlRemoveVectoredExceptionHandler" );
pNtQueryInformationProcess = (void*)GetProcAddress( hntdll,
"NtQueryInformationProcess" );
pNtSetInformationProcess = (void*)GetProcAddress( hntdll,
"NtSetInformationProcess" );
#ifdef __i386__
if (!pNtCurrentTeb)
@ -1271,6 +1435,7 @@ START_TEST(exception)
test_debugger();
test_simd_exceptions();
test_fpu_exceptions();
test_dpe_exceptions();
#elif defined(__x86_64__)