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| -rw-r--r-- | include/iprt/fuzz.h | 501 |
1 files changed, 501 insertions, 0 deletions
diff --git a/include/iprt/fuzz.h b/include/iprt/fuzz.h new file mode 100644 index 00000000..c6f585c2 --- /dev/null +++ b/include/iprt/fuzz.h @@ -0,0 +1,501 @@ +/** @file + * IPRT - Fuzzing framework + */ + +/* + * 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. + */ + +#ifndef IPRT_INCLUDED_fuzz_h +#define IPRT_INCLUDED_fuzz_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +#include <iprt/cdefs.h> +#include <iprt/types.h> + +RT_C_DECLS_BEGIN + +/** @defgroup grp_rt_fuzz RTFuzz - Data fuzzing framework + * @ingroup grp_rt + * @sa grp_rt_test + * @{ + */ + +/** A fuzzer context handle. */ +typedef struct RTFUZZCTXINT *RTFUZZCTX; +/** Pointer to a fuzzer context handle. */ +typedef RTFUZZCTX *PRTFUZZCTX; +/** NIL fuzzer context handle. */ +#define NIL_RTFUZZCTX ((RTFUZZCTX)~(uintptr_t)0) +/** A fuzzer input handle. */ +typedef struct RTFUZZINPUTINT *RTFUZZINPUT; +/** Pointer to a fuzzer input handle. */ +typedef RTFUZZINPUT *PRTFUZZINPUT; +/** NIL fuzzer input handle. */ +#define NIL_RTFUZZINPUT ((RTFUZZINPUT)~(uintptr_t)0) + + +/** Fuzzing observer handle. */ +typedef struct RTFUZZOBSINT *RTFUZZOBS; +/** Pointer to a fuzzing observer handle. */ +typedef RTFUZZOBS *PRTFUZZOBS; +/** NIL fuzzing observer handle. */ +#define NIL_RTFUZZOBS ((RTFUZZOBS)~(uintptr_t)0) + + +/** @name RTFUZZCTX_F_XXX - Flags for RTFuzzCtxCfgSetBehavioralFlags + * @{ */ +/** Adds all generated inputs automatically to the input corpus for the owning context. */ +#define RTFUZZCTX_F_BEHAVIORAL_ADD_INPUT_AUTOMATICALLY_TO_CORPUS RT_BIT_32(0) +/** All valid behavioral modification flags. */ +#define RTFUZZCTX_F_BEHAVIORAL_VALID (RTFUZZCTX_F_BEHAVIORAL_ADD_INPUT_AUTOMATICALLY_TO_CORPUS) +/** @} */ + +/** + * Creates a new fuzzing context. + * + * @returns IPRT status code. + * @param phFuzzCtx Where to store the handle to the fuzzing context on success. + */ +RTDECL(int) RTFuzzCtxCreate(PRTFUZZCTX phFuzzCtx); + +/** + * Creates a new fuzzing context from the given state. + * + * @returns IPRT status code. + * @param phFuzzCtx Where to store the handle to the fuzzing context on success. + * @param pvState The pointer to the fuzzing state. + * @param cbState Size of the state buffer in bytes. + */ +RTDECL(int) RTFuzzCtxCreateFromState(PRTFUZZCTX phFuzzCtx, const void *pvState, size_t cbState); + +/** + * Creates a new fuzzing context loading the state from the given file. + * + * @returns IPRT status code. + * @param phFuzzCtx Where to store the handle to the fuzzing context on success. + * @param pszFilename File to load the fuzzing context from. + */ +RTDECL(int) RTFuzzCtxCreateFromStateFile(PRTFUZZCTX phFuzzCtx, const char *pszFilename); + +/** + * Retains a reference to the given fuzzing context. + * + * @returns New reference count on success. + * @param hFuzzCtx Handle of the fuzzing context. + */ +RTDECL(uint32_t) RTFuzzCtxRetain(RTFUZZCTX hFuzzCtx); + +/** + * Releases a reference from the given fuzzing context, destroying it when reaching 0. + * + * @returns New reference count on success, 0 if the fuzzing context got destroyed. + * @param hFuzzCtx Handle of the fuzzing context. + */ +RTDECL(uint32_t) RTFuzzCtxRelease(RTFUZZCTX hFuzzCtx); + +/** + * Exports the given fuzzing context state. + * + * @returns IPRT statuse code + * @param hFuzzCtx The fuzzing context to export. + * @param ppvState Where to store the buffer of the state on success, free with RTMemFree(). + * @param pcbState Where to store the size of the context on success. + */ +RTDECL(int) RTFuzzCtxStateExport(RTFUZZCTX hFuzzCtx, void **ppvState, size_t *pcbState); + +/** + * Exports the given fuzzing context state to the given file. + * + * @returns IPRT status code. + * @param hFuzzCtx The fuzzing context to export. + * @param pszFilename The file to save the state to. + */ +RTDECL(int) RTFuzzCtxStateExportToFile(RTFUZZCTX hFuzzCtx, const char *pszFilename); + +/** + * Adds a new seed to the input corpus of the given fuzzing context. + * + * @returns IPRT status code. + * @param hFuzzCtx The fuzzing context handle. + * @param pvInput The pointer to the input buffer. + * @param cbInput Size of the input buffer. + */ +RTDECL(int) RTFuzzCtxCorpusInputAdd(RTFUZZCTX hFuzzCtx, const void *pvInput, size_t cbInput); + +/** + * Adds a new seed to the input corpus of the given fuzzing context from the given file. + * + * @returns IPRT status code. + * @param hFuzzCtx The fuzzing context handle. + * @param pszFilename The filename to load the seed from. + */ +RTDECL(int) RTFuzzCtxCorpusInputAddFromFile(RTFUZZCTX hFuzzCtx, const char *pszFilename); + +/** + * Adds a new seed to the input corpus of the given fuzzing context from the given VFS file. + * + * @returns IPRT status code. + * @param hFuzzCtx The fuzzing context handle. + * @param hVfsFile The VFS file handle to load the seed from. + */ +RTDECL(int) RTFuzzCtxCorpusInputAddFromVfsFile(RTFUZZCTX hFuzzCtx, RTVFSFILE hVfsFile); + +/** + * Adds new seeds to the input corpus of the given fuzzing context from the given directory. + * + * Will only process regular files, i.e. ignores directories, symbolic links, devices, fifos + * and such. + * + * @returns IPRT status code. + * @param hFuzzCtx The fuzzing context handle. + * @param pszDirPath The directory to load seeds from. + */ +RTDECL(int) RTFuzzCtxCorpusInputAddFromDirPath(RTFUZZCTX hFuzzCtx, const char *pszDirPath); + +/** + * Restricts the maximum input size to generate by the fuzzing context. + * + * @returns IPRT status code + * @param hFuzzCtx The fuzzing context handle. + * @param cbMax Maximum input size in bytes. + */ +RTDECL(int) RTFuzzCtxCfgSetInputSeedMaximum(RTFUZZCTX hFuzzCtx, size_t cbMax); + +/** + * Returns the maximum input size of the given fuzzing context. + * + * @returns Maximum input size generated in bytes. + * @param hFuzzCtx The fuzzing context handle. + */ +RTDECL(size_t) RTFuzzCtxCfgGetInputSeedMaximum(RTFUZZCTX hFuzzCtx); + +/** + * Sets flags controlling the behavior of the fuzzing context. + * + * @returns IPRT status code. + * @param hFuzzCtx The fuzzing context handle. + * @param fFlags Flags controlling the fuzzing context, RTFUZZCTX_F_XXX. + */ +RTDECL(int) RTFuzzCtxCfgSetBehavioralFlags(RTFUZZCTX hFuzzCtx, uint32_t fFlags); + +/** + * Returns the current set behavioral flags for the given fuzzing context. + * + * @returns Behavioral flags of the given fuzzing context. + * @param hFuzzCtx The fuzzing context handle. + */ +RTDECL(uint32_t) RTFuzzCfgGetBehavioralFlags(RTFUZZCTX hFuzzCtx); + +/** + * Sets the temporary directory used by the fuzzing context. + * + * @returns IPRT status code. + * @param hFuzzCtx The fuzzing context handle. + * @param pszPathTmp The directory for the temporary state. + */ +RTDECL(int) RTFuzzCtxCfgSetTmpDirectory(RTFUZZCTX hFuzzCtx, const char *pszPathTmp); + +/** + * Returns the current temporary directory. + * + * @returns Current temporary directory. + * @param hFuzzCtx The fuzzing context handle. + */ +RTDECL(const char *) RTFuzzCtxCfgGetTmpDirectory(RTFUZZCTX hFuzzCtx); + +/** + * Reseeds the PRNG of the given fuzzing context. + * + * @returns IPRT status code. + * @param hFuzzCtx The fuzzing context handle. + * @param uSeed The new seed. + */ +RTDECL(int) RTFuzzCtxReseed(RTFUZZCTX hFuzzCtx, uint64_t uSeed); + +/** + * Generates a new input from the given fuzzing context and returns it. + * + * @returns IPRT status code. + * @param hFuzzCtx The fuzzing context handle. + * @param phFuzzInput Where to store the handle to the fuzzed input on success. + */ +RTDECL(int) RTFuzzCtxInputGenerate(RTFUZZCTX hFuzzCtx, PRTFUZZINPUT phFuzzInput); + +/** + * Mutates a raw buffer. + * + * @returns IPRT status code. + * @param hFuzzCtx The fuzzing context handle. + * @param pvBuf Pointer to the buffer to mutate. + * @param cbBuf Size of the buffer iny bytes to mutate. + * @param phFuzzInput Where to store the handle to the fuzzed input on success. + */ +RTDECL(int) RTFuzzCtxMutateBuffer(RTFUZZCTX hFuzzCtx, void *pvBuf, size_t cbBuf, + PRTFUZZINPUT phFuzzInput); + + +/** + * Retains a reference to the given fuzzing input handle. + * + * @returns New reference count on success. + * @param hFuzzInput The fuzzing input handle. + */ +RTDECL(uint32_t) RTFuzzInputRetain(RTFUZZINPUT hFuzzInput); + +/** + * Releases a reference from the given fuzzing input handle, destroying it when reaaching 0. + * + * @returns New reference count on success, 0 if the fuzzing input got destroyed. + * @param hFuzzInput The fuzzing input handle. + */ +RTDECL(uint32_t) RTFuzzInputRelease(RTFUZZINPUT hFuzzInput); + +/** + * Queries the data pointer and size of the given fuzzing input. + * + * @returns IPRT status code + * @param hFuzzInput The fuzzing input handle. + * @param ppv Where to store the pointer to the input data on success. + * @param pcb Where to store the size of the input data on success. + */ +RTDECL(int) RTFuzzInputQueryData(RTFUZZINPUT hFuzzInput, void **ppv, size_t *pcb); + +/** + * Queries the string of the MD5 digest for the given fuzzed input. + * + * @returns IPRT status code. + * @retval VERR_BUFFER_OVERFLOW if the size of the string buffer is not sufficient. + * @param hFuzzInput The fuzzing input handle. + * @param pszDigest Where to store the digest string and a closing terminator. + * @param cchDigest Size of the string buffer in characters (including the zero terminator). + */ +RTDECL(int) RTFuzzInputQueryDigestString(RTFUZZINPUT hFuzzInput, char *pszDigest, size_t cchDigest); + +/** + * Writes the given fuzzing input to the given file. + * + * @returns IPRT status code. + * @param hFuzzInput The fuzzing input handle. + * @param pszFilename The filename to store the input to. + */ +RTDECL(int) RTFuzzInputWriteToFile(RTFUZZINPUT hFuzzInput, const char *pszFilename); + +/** + * Adds the given fuzzed input to the input corpus of the owning context. + * + * @returns IPRT status code. + * @retval VERR_ALREADY_EXISTS if the input exists already. + * @param hFuzzInput The fuzzing input handle. + */ +RTDECL(int) RTFuzzInputAddToCtxCorpus(RTFUZZINPUT hFuzzInput); + +/** + * Removes the given fuzzed input from the input corpus of the owning context. + * + * @returns IPRT status code. + * @retval VERR_NOT_FOUND if the input is not part of the corpus. + * @param hFuzzInput The fuzzing input handle. + */ +RTDECL(int) RTFuzzInputRemoveFromCtxCorpus(RTFUZZINPUT hFuzzInput); + + +/** + * Fuzzed binary input channel. + */ +typedef enum RTFUZZOBSINPUTCHAN +{ + /** Invalid. */ + RTFUZZOBSINPUTCHAN_INVALID = 0, + /** File input. */ + RTFUZZOBSINPUTCHAN_FILE, + /** Input over stdin. */ + RTFUZZOBSINPUTCHAN_STDIN, + /** The binary is a fuzzing aware client using the + * specified protocol over stdin/stdout. */ + RTFUZZOBSINPUTCHAN_FUZZING_AWARE_CLIENT, + /** TCP server. */ + RTFUZZOBSINPUTCHAN_TCP_SERVER, + /** TCP client. */ + RTFUZZOBSINPUTCHAN_TCP_CLIENT, + /** UDP server. */ + RTFUZZOBSINPUTCHAN_UDP_SERVER, + /** UDP client. */ + RTFUZZOBSINPUTCHAN_UDP_CLIENT, + /** 32bit hack. */ + RTFUZZOBSINPUTCHAN_32BIT_HACK = 0x7fffffff +} RTFUZZOBSINPUTCHAN; + +/** + * Fuzzing observer statistics. + */ +typedef struct RTFUZZOBSSTATS +{ + /** Number of fuzzed inputs per second. */ + uint32_t cFuzzedInputsPerSec; + /** Number of overall fuzzed inputs. */ + uint32_t cFuzzedInputs; + /** Number of observed hangs. */ + uint32_t cFuzzedInputsHang; + /** Number of observed crashes. */ + uint32_t cFuzzedInputsCrash; +} RTFUZZOBSSTATS; +/** Pointer to a fuzzing observer statistics record. */ +typedef RTFUZZOBSSTATS *PRTFUZZOBSSTATS; + +/** + * Creates a new fuzzing observer. + * + * @returns IPRT status code. + * @param phFuzzObs Where to store the fuzzing observer handle on success. + */ +RTDECL(int) RTFuzzObsCreate(PRTFUZZOBS phFuzzObs); + +/** + * Destroys a previously created fuzzing observer. + * + * @returns IPRT status code. + * @param hFuzzObs The fuzzing observer handle. + */ +RTDECL(int) RTFuzzObsDestroy(RTFUZZOBS hFuzzObs); + +/** + * Queries the internal fuzzing context of the given observer. + * + * @returns IPRT status code. + * @param hFuzzObs The fuzzing observer handle. + * @param phFuzzCtx Where to store the handle to the fuzzing context on success. + * + * @note The fuzzing context handle should be released with RTFuzzCtxRelease() when not used anymore. + */ +RTDECL(int) RTFuzzObsQueryCtx(RTFUZZOBS hFuzzObs, PRTFUZZCTX phFuzzCtx); + +/** + * Queries the current statistics for the given fuzzing observer. + * + * @returns IPRT status code. + * @param hFuzzObs The fuzzing observer handle. + * @param pStats Where to store the statistics to. + */ +RTDECL(int) RTFuzzObsQueryStats(RTFUZZOBS hFuzzObs, PRTFUZZOBSSTATS pStats); + +/** + * Sets the temp directory for the given fuzzing observer. + * + * @returns IPRT status code. + * @param hFuzzObs The fuzzing observer handle. + * @param pszTmp The temp directory path. + */ +RTDECL(int) RTFuzzObsSetTmpDirectory(RTFUZZOBS hFuzzObs, const char *pszTmp); + +/** + * Sets the directory to store results to. + * + * @returns IPRT status code. + * @param hFuzzObs The fuzzing observer handle. + * @param pszResults The path to store the results. + */ +RTDECL(int) RTFuzzObsSetResultDirectory(RTFUZZOBS hFuzzObs, const char *pszResults); + +/** + * Sets the binary to run for each fuzzed input. + * + * @returns IPRT status code. + * @param hFuzzObs The fuzzing observer handle. + * @param pszBinary The binary path. + * @param enmInputChan The input channel to use. + */ +RTDECL(int) RTFuzzObsSetTestBinary(RTFUZZOBS hFuzzObs, const char *pszBinary, RTFUZZOBSINPUTCHAN enmInputChan); + +/** + * Sets additional arguments to run the binary with. + * + * @returns IPRT status code. + * @param hFuzzObs The fuzzing observer handle. + * @param papszArgs Pointer to the array of arguments. + * @param cArgs Number of arguments. + */ +RTDECL(int) RTFuzzObsSetTestBinaryArgs(RTFUZZOBS hFuzzObs, const char * const *papszArgs, unsigned cArgs); + +/** + * Starts fuzzing the set binary. + * + * @returns IPRT status code. + * @param hFuzzObs The fuzzing observer handle. + * @param cProcs Number of processes to run simulteanously, + * 0 will create as many processes as there are CPUs available. + */ +RTDECL(int) RTFuzzObsExecStart(RTFUZZOBS hFuzzObs, uint32_t cProcs); + +/** + * Stops the fuzzing process. + * + * @returns IPRT status code. + * @param hFuzzObs The fuzzing observer handle. + */ +RTDECL(int) RTFuzzObsExecStop(RTFUZZOBS hFuzzObs); + + +/** + * A fuzzing master program. + * + * @returns Program exit code. + * + * @param cArgs The number of arguments. + * @param papszArgs The argument vector. (Note that this may be + * reordered, so the memory must be writable.) + */ +RTR3DECL(RTEXITCODE) RTFuzzCmdMaster(unsigned cArgs, char **papszArgs); + + +/** + * Client input consumption callback. + * + * @returns IPRT status code. + * @retval VINF_SUCCESS the fuzzed code accepted the input. + * @retval VERR_* the client rejected the input while parsing it. + * @param pvBuf The buffer containing the input data. + * @param cbBuf Size of the buffer in bytes. + * @param pvUser Opaque user data. + */ +typedef DECLCALLBACK(int) FNFUZZCLIENTCONSUME(const void *pvBuf, size_t cbBuf, void *pvUser); +/** Pointer to a client consumption callback. */ +typedef FNFUZZCLIENTCONSUME *PFNFUZZCLIENTCONSUME; + +/** + * A fuzzing client program for more efficient fuzzing. + * + * @returns Program exit code. + * + * @param cArgs The number of arguments. + * @param papszArgs The argument vector. (Note that this may be + * reordered, so the memory must be writable.) + * @param pfnConsume Input data consumption callback. + * @param pvUser Opaque user data to pass to the callback. + */ +RTR3DECL(RTEXITCODE) RTFuzzCmdFuzzingClient(unsigned cArgs, char **papszArgs, PFNFUZZCLIENTCONSUME pfnConsume, void *pvUser); +/** @} */ + +RT_C_DECLS_END + +#endif /* !IPRT_INCLUDED_fuzz_h */ + |