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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
/*=============================================================
**
** Source: ReadProcessMemory_neg.c
**
** Purpose: Negative test the ReadProcessMemory API.
** Call ReadProcessMemory to read unreadabel memory area
**
**
**============================================================*/
#include <palsuite.h>
#define REGIONSIZE 1024
int __cdecl main(int argc, char *argv[])
{
int err;
BOOL bResult;
HANDLE ProcessHandle;
DWORD ProcessID;
LPVOID lpProcessAddress = NULL;
char ProcessBuffer[REGIONSIZE];
ULONG_PTR size = 0;
/*Initialize the PAL environment*/
err = PAL_Initialize(argc, argv);
if(0 != err)
{
return FAIL;
}
/*retrieve the current process ID*/
ProcessID = GetCurrentProcessId();
/*retrieve the current process handle*/
ProcessHandle = OpenProcess(
PROCESS_ALL_ACCESS,
FALSE, /*not inherited*/
ProcessID);
if(NULL == ProcessHandle)
{
Fail("\nFailed to call OpenProcess API to retrieve "
"current process handle error code=%u\n",
GetLastError());
}
/*allocate the virtual memory*/
lpProcessAddress = VirtualAlloc(
NULL, /*system determine where to allocate the region*/
REGIONSIZE, /*specify the size*/
MEM_RESERVE, /*allocation type*/
PAGE_READONLY); /*access protection*/
if(NULL == lpProcessAddress)
{
Fail("\nFailed to call VirtualAlloc API to allocate "
"virtual memory, error code=%u\n", GetLastError());
}
/*zero the memory*/
memset(ProcessBuffer, 0, REGIONSIZE);
/*try to retrieve the unreadable memory area*/
bResult = ReadProcessMemory(
ProcessHandle, /*current process handle*/
lpProcessAddress, /*base of memory area*/
(LPVOID)ProcessBuffer,
REGIONSIZE, /*buffer length in bytes*/
&size);
/*check the return value*/
if(0 != bResult)
{
Trace("\nFailed to call ReadProcessMemory API for a negative test, "
"Try to read an unreadable memory area will cause fail "
"but it successes\n");
err = CloseHandle(ProcessHandle);
if(0 == err)
{
Trace("\nFailed to call CloseHandle API, error code=%u\n",
GetLastError());
}
/*decommit the specified region*/
err = VirtualFree(lpProcessAddress, REGIONSIZE, MEM_DECOMMIT);
if(0 == err)
{
Trace("\nFailed to call VirtualFree API, error code=%u\n",
GetLastError());
}
Fail("");
}
err = CloseHandle(ProcessHandle);
if(0 == err)
{
Trace("\nFailed to call CloseHandle API, error code = %u\n",
GetLastError());
err = VirtualFree(lpProcessAddress, REGIONSIZE, MEM_DECOMMIT);
if(0 == err)
{
Trace("\nFailed to call VirtualFree API, error code=%u\n",
GetLastError());
}
Fail("");
}
/*decommit the specified region*/
err = VirtualFree(lpProcessAddress, REGIONSIZE, MEM_DECOMMIT);
if(0 == err)
{
Fail("\nFailed to call VirtualFree API, error code=%u\n",
GetLastError());
}
PAL_Terminate();
return PASS;
}
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