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/* $Id: fuzzclientcmd.cpp $ */
/** @file
* IPRT - Fuzzing framework API, fuzzed client command.
*/
/*
* Copyright (C) 2018-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <iprt/fuzz.h>
#include "internal/iprt.h"
#include <iprt/assert.h>
#include <iprt/buildconfig.h>
#include <iprt/errcore.h>
#include <iprt/getopt.h>
#include <iprt/mem.h>
#include <iprt/message.h>
#include <iprt/stream.h>
#include <iprt/string.h>
#include <iprt/types.h>
#include <iprt/vfs.h>
/**
* Fuzzing client command state.
*/
typedef struct RTFUZZCMDCLIENT
{
/** Our own fuzzing context containing all the data. */
RTFUZZCTX hFuzzCtx;
/** Consumption callback. */
PFNFUZZCLIENTCONSUME pfnConsume;
/** Opaque user data to pass to the consumption callback. */
void *pvUser;
/** Standard input VFS handle. */
RTVFSIOSTREAM hVfsStdIn;
/** Standard output VFS handle. */
RTVFSIOSTREAM hVfsStdOut;
} RTFUZZCMDCLIENT;
/** Pointer to a fuzzing client command state. */
typedef RTFUZZCMDCLIENT *PRTFUZZCMDCLIENT;
/**
* The fuzzing client mainloop.
*
* @returns IPRT status code.
* @param pThis The fuzzing client command state.
*/
static int rtFuzzCmdClientMainloop(PRTFUZZCMDCLIENT pThis)
{
int rc = VINF_SUCCESS;
bool fShutdown = false;
while ( !fShutdown
&& RT_SUCCESS(rc))
{
RTFUZZINPUT hFuzzInput;
rc = RTFuzzCtxInputGenerate(pThis->hFuzzCtx, &hFuzzInput);
if (RT_SUCCESS(rc))
{
void *pv = NULL;
size_t cb = 0;
rc = RTFuzzInputQueryData(hFuzzInput, &pv, &cb);
if (RT_SUCCESS(rc))
{
char bResp = '.';
int rc2 = pThis->pfnConsume(pv, cb, pThis->pvUser);
if (RT_SUCCESS(rc2))
{
rc = RTFuzzInputAddToCtxCorpus(hFuzzInput);
bResp = 'A';
}
if (RT_SUCCESS(rc))
rc = RTVfsIoStrmWrite(pThis->hVfsStdOut, &bResp, 1, true /*fBlocking*/, NULL);
}
RTFuzzInputRelease(hFuzzInput);
}
}
return rc;
}
/**
* Run the fuzzing client.
*
* @returns Process exit status.
* @param pThis The fuzzing client command state.
*/
static RTEXITCODE rtFuzzCmdClientRun(PRTFUZZCMDCLIENT pThis)
{
int rc = RTVfsIoStrmFromStdHandle(RTHANDLESTD_INPUT, 0, true /*fLeaveOpen*/, &pThis->hVfsStdIn);
if (RT_SUCCESS(rc))
{
rc = RTVfsIoStrmFromStdHandle(RTHANDLESTD_OUTPUT, 0, true /*fLeaveOpen*/, &pThis->hVfsStdOut);
if (RT_SUCCESS(rc))
{
/* Read the initial input fuzzer state from the standard input. */
uint32_t cbFuzzCtxState;
rc = RTVfsIoStrmRead(pThis->hVfsStdIn, &cbFuzzCtxState, sizeof(cbFuzzCtxState), true /*fBlocking*/, NULL);
if (RT_SUCCESS(rc))
{
void *pvFuzzCtxState = RTMemAllocZ(cbFuzzCtxState);
if (RT_LIKELY(pvFuzzCtxState))
{
rc = RTVfsIoStrmRead(pThis->hVfsStdIn, pvFuzzCtxState, cbFuzzCtxState, true /*fBlocking*/, NULL);
if (RT_SUCCESS(rc))
{
rc = RTFuzzCtxCreateFromState(&pThis->hFuzzCtx, pvFuzzCtxState, cbFuzzCtxState);
if (RT_SUCCESS(rc))
rc = rtFuzzCmdClientMainloop(pThis);
}
RTMemFree(pvFuzzCtxState);
}
else
rc = VERR_NO_MEMORY;
}
}
}
if (RT_SUCCESS(rc))
return RTEXITCODE_SUCCESS;
return RTEXITCODE_FAILURE;
}
RTR3DECL(RTEXITCODE) RTFuzzCmdFuzzingClient(unsigned cArgs, char **papszArgs, PFNFUZZCLIENTCONSUME pfnConsume, void *pvUser)
{
/*
* Parse the command line.
*/
static const RTGETOPTDEF s_aOptions[] =
{
{ "--help", 'h', RTGETOPT_REQ_NOTHING },
{ "--version", 'V', RTGETOPT_REQ_NOTHING },
};
RTEXITCODE rcExit = RTEXITCODE_SUCCESS;
RTGETOPTSTATE GetState;
int rc = RTGetOptInit(&GetState, cArgs, papszArgs, s_aOptions, RT_ELEMENTS(s_aOptions), 1,
RTGETOPTINIT_FLAGS_OPTS_FIRST);
if (RT_SUCCESS(rc))
{
/* Option variables: */
RTFUZZCMDCLIENT This;
This.pfnConsume = pfnConsume;
This.pvUser = pvUser;
/* Argument parsing loop. */
bool fContinue = true;
do
{
RTGETOPTUNION ValueUnion;
int chOpt = RTGetOpt(&GetState, &ValueUnion);
switch (chOpt)
{
case 0:
fContinue = false;
break;
case 'h':
RTPrintf("Usage: to be written\nOption dump:\n");
for (unsigned i = 0; i < RT_ELEMENTS(s_aOptions); i++)
RTPrintf(" -%c,%s\n", s_aOptions[i].iShort, s_aOptions[i].pszLong);
fContinue = false;
break;
case 'V':
RTPrintf("%sr%d\n", RTBldCfgVersion(), RTBldCfgRevision());
fContinue = false;
break;
default:
rcExit = RTGetOptPrintError(chOpt, &ValueUnion);
fContinue = false;
break;
}
} while (fContinue);
if (rcExit == RTEXITCODE_SUCCESS)
rcExit = rtFuzzCmdClientRun(&This);
}
else
rcExit = RTMsgErrorExit(RTEXITCODE_SYNTAX, "RTGetOptInit: %Rrc", rc);
return rcExit;
}
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