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input.c
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input.c
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/*
* honggfuzz - file operations
* -----------------------------------------
*
* Author: Robert Swiecki <[email protected]>
*
* Copyright 2010-2020 by Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied. See the License for the specific language governing
* permissions and limitations under the License.
*
*/
#include "input.h"
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/queue.h>
#include <sys/stat.h>
#include <unistd.h>
#include "fuzz.h"
#include "libhfcommon/common.h"
#include "libhfcommon/files.h"
#include "libhfcommon/log.h"
#include "libhfcommon/util.h"
#include "mangle.h"
#include "subproc.h"
void input_setSize(run_t* run, size_t sz) {
if (run->dynfile->size == sz) {
return;
}
if (sz > run->global->mutate.maxInputSz) {
PLOG_F("Too large size requested: %zu > maxSize: %zu", sz, run->global->mutate.maxInputSz);
}
/* ftruncate of a mmaped file fails under CygWin, it's also painfully slow under MacOS X */
#if !defined(__CYGWIN__) && !defined(_HF_ARCH_DARWIN)
if (TEMP_FAILURE_RETRY(ftruncate(run->dynfile->fd, sz)) == -1) {
PLOG_W("ftruncate(run->dynfile->fd=%d, sz=%zu)", run->dynfile->fd, sz);
}
#endif /* !defined(__CYGWIN__) && !defined(_HF_ARCH_DARWIN) */
run->dynfile->size = sz;
}
bool input_getDirStatsAndRewind(honggfuzz_t* hfuzz) {
rewinddir(hfuzz->io.inputDirPtr);
size_t fileCnt = 0U;
for (;;) {
errno = 0;
struct dirent* entry = readdir(hfuzz->io.inputDirPtr);
if (entry == NULL && errno == EINTR) {
continue;
}
if (entry == NULL && errno != 0) {
PLOG_W("readdir('%s')", hfuzz->io.inputDir);
return false;
}
if (entry == NULL) {
break;
}
char path[PATH_MAX];
snprintf(path, sizeof(path), "%s/%s", hfuzz->io.inputDir, entry->d_name);
LOG_D("Analyzing file '%s'", path);
struct stat st;
if (stat(path, &st) == -1) {
LOG_W("Couldn't stat() the '%s' file", path);
continue;
}
if (!S_ISREG(st.st_mode)) {
LOG_D("'%s' is not a regular file, skipping", path);
continue;
}
if (hfuzz->io.maxFileSz && st.st_size > (off_t)hfuzz->io.maxFileSz) {
LOG_D("File '%s' is bigger than maximal defined file size (-F): %" PRIu64 " > %zu",
path, (uint64_t)st.st_size, hfuzz->io.maxFileSz);
}
if ((size_t)st.st_size > hfuzz->mutate.maxInputSz) {
hfuzz->mutate.maxInputSz = st.st_size;
}
fileCnt++;
}
ATOMIC_SET(hfuzz->io.fileCnt, fileCnt);
if (hfuzz->io.maxFileSz) {
hfuzz->mutate.maxInputSz = hfuzz->io.maxFileSz;
} else if (hfuzz->mutate.maxInputSz < _HF_INPUT_DEFAULT_SIZE) {
hfuzz->mutate.maxInputSz = _HF_INPUT_DEFAULT_SIZE;
} else if (hfuzz->mutate.maxInputSz > _HF_INPUT_MAX_SIZE) {
hfuzz->mutate.maxInputSz = _HF_INPUT_MAX_SIZE;
}
if (hfuzz->io.fileCnt == 0U) {
LOG_W("No usable files in the input directory '%s'", hfuzz->io.inputDir);
}
LOG_D("Analyzed '%s' directory: maxInputSz:%zu, number of usable files:%zu", hfuzz->io.inputDir,
hfuzz->mutate.maxInputSz, hfuzz->io.fileCnt);
rewinddir(hfuzz->io.inputDirPtr);
return true;
}
bool input_getNext(run_t* run, char fname[PATH_MAX], bool rewind) {
MX_SCOPED_LOCK(&run->global->mutex.input);
if (run->global->io.fileCnt == 0U) {
LOG_W("No useful files in the input directory");
return false;
}
for (;;) {
errno = 0;
struct dirent* entry = readdir(run->global->io.inputDirPtr);
if (entry == NULL && errno == EINTR) {
continue;
}
if (entry == NULL && errno != 0) {
PLOG_W("readdir_r('%s')", run->global->io.inputDir);
return false;
}
if (entry == NULL && !rewind) {
return false;
}
if (entry == NULL && rewind) {
rewinddir(run->global->io.inputDirPtr);
continue;
}
char path[PATH_MAX];
snprintf(path, PATH_MAX, "%s/%s", run->global->io.inputDir, entry->d_name);
struct stat st;
if (stat(path, &st) == -1) {
LOG_W("Couldn't stat() the '%s' file", path);
continue;
}
if (!S_ISREG(st.st_mode)) {
LOG_D("'%s' is not a regular file, skipping", path);
continue;
}
snprintf(fname, PATH_MAX, "%s", entry->d_name);
return true;
}
}
bool input_init(honggfuzz_t* hfuzz) {
hfuzz->io.fileCnt = 0U;
if (!hfuzz->io.inputDir) {
LOG_W("No input file/dir specified");
return false;
}
int dir_fd = TEMP_FAILURE_RETRY(open(hfuzz->io.inputDir, O_DIRECTORY | O_RDONLY | O_CLOEXEC));
if (dir_fd == -1) {
PLOG_W("open('%s', O_DIRECTORY|O_RDONLY|O_CLOEXEC)", hfuzz->io.inputDir);
return false;
}
if ((hfuzz->io.inputDirPtr = fdopendir(dir_fd)) == NULL) {
PLOG_W("fdopendir(dir='%s', fd=%d)", hfuzz->io.inputDir, dir_fd);
close(dir_fd);
return false;
}
if (!input_getDirStatsAndRewind(hfuzz)) {
hfuzz->io.fileCnt = 0U;
LOG_W("input_getDirStatsAndRewind('%s')", hfuzz->io.inputDir);
return false;
}
return true;
}
bool input_parseDictionary(honggfuzz_t* hfuzz) {
LOG_I("Parsing dictionary file '%s'", hfuzz->mutate.dictionaryFile);
FILE* fDict = fopen(hfuzz->mutate.dictionaryFile, "rb");
if (fDict == NULL) {
PLOG_W("Couldn't open '%s' - R/O mode", hfuzz->mutate.dictionaryFile);
return false;
}
defer {
fclose(fDict);
};
char* lineptr = NULL;
size_t n = 0;
defer {
free(lineptr);
};
for (;;) {
ssize_t len = getdelim(&lineptr, &n, '\n', fDict);
if (len == -1) {
break;
}
if (hfuzz->mutate.dictionaryCnt == ARRAYSIZE(hfuzz->mutate.dictionary)) {
LOG_W("Maximum number of dictionary entries '%zu' alread loaded. Skipping the rest",
ARRAYSIZE(hfuzz->mutate.dictionary));
break;
}
if (len > 1 && lineptr[len - 1] == '\n') {
lineptr[len - 1] = '\0';
len--;
}
if (lineptr[0] == '#') {
continue;
}
if (lineptr[0] == '\n') {
continue;
}
if (lineptr[0] == '\0') {
continue;
}
const char* start = strchr(lineptr, '"');
char* end = strrchr(lineptr, '"');
if (!start || !end) {
LOG_W("Malformed dictionary line '%s', skipping", lineptr);
continue;
}
if ((uintptr_t)start == (uintptr_t)end) {
LOG_W("Malformed dictionary line '%s', skipping", lineptr);
continue;
}
*end = '\0';
char bufv[1025] = {};
if (sscanf(&start[1], "%1024c", bufv) != 1) {
LOG_W("Malformed dictionary line '%s', skipping", lineptr);
continue;
}
LOG_D("Parsing dictionary word: '%s'", bufv);
len = util_decodeCString(bufv);
size_t dictEntry = ATOMIC_POST_INC(hfuzz->mutate.dictionaryCnt);
len = HF_MIN((size_t)len, sizeof(hfuzz->mutate.dictionary[dictEntry].val));
memcpy(hfuzz->mutate.dictionary[dictEntry].val, bufv, len);
hfuzz->mutate.dictionary[dictEntry].len = len;
LOG_D("Dictionary: loaded word: '%s' (len=%zd)", bufv, len);
}
LOG_I("Loaded %zu words from the dictionary '%s'", hfuzz->mutate.dictionaryCnt,
hfuzz->mutate.dictionaryFile);
return true;
}
bool input_parseBlacklist(honggfuzz_t* hfuzz) {
FILE* fBl = fopen(hfuzz->feedback.blocklistFile, "rb");
if (fBl == NULL) {
PLOG_W("Couldn't open '%s' - R/O mode", hfuzz->feedback.blocklistFile);
return false;
}
defer {
fclose(fBl);
};
char* lineptr = NULL;
/* lineptr can be NULL, but it's fine for free() */
defer {
free(lineptr);
};
size_t n = 0;
for (;;) {
if (getline(&lineptr, &n, fBl) == -1) {
break;
}
if ((hfuzz->feedback.blocklist = util_Realloc(hfuzz->feedback.blocklist,
(hfuzz->feedback.blocklistCnt + 1) * sizeof(hfuzz->feedback.blocklist[0]))) ==
NULL) {
PLOG_W("realloc failed (sz=%zu)",
(hfuzz->feedback.blocklistCnt + 1) * sizeof(hfuzz->feedback.blocklist[0]));
return false;
}
hfuzz->feedback.blocklist[hfuzz->feedback.blocklistCnt] = strtoull(lineptr, 0, 16);
LOG_D("Blacklist: loaded %'" PRIu64 "'",
hfuzz->feedback.blocklist[hfuzz->feedback.blocklistCnt]);
/* Verify entries are sorted so we can use interpolation search */
if (hfuzz->feedback.blocklistCnt >= 1) {
if (hfuzz->feedback.blocklist[hfuzz->feedback.blocklistCnt - 1] >
hfuzz->feedback.blocklist[hfuzz->feedback.blocklistCnt]) {
LOG_F("Blacklist file not sorted. Use 'tools/createStackBlacklist.sh' to sort "
"records");
return false;
}
}
hfuzz->feedback.blocklistCnt += 1;
}
if (hfuzz->feedback.blocklistCnt > 0) {
LOG_I("Loaded %zu stack hash(es) from the blocklist file", hfuzz->feedback.blocklistCnt);
} else {
LOG_F("Empty stack hashes blocklist file '%s'", hfuzz->feedback.blocklistFile);
}
return true;
}
static void input_generateFileName(dynfile_t* dynfile, const char* dir, char fname[PATH_MAX]) {
uint64_t crc64f = util_CRC64(dynfile->data, dynfile->size);
uint64_t crc64r = util_CRC64Rev(dynfile->data, dynfile->size);
if (dir) {
snprintf(fname, PATH_MAX, "%s/%016" PRIx64 "%016" PRIx64 ".%08" PRIx32 ".honggfuzz.cov",
dir, crc64f, crc64r, (uint32_t)dynfile->size);
} else {
snprintf(fname, PATH_MAX, "%016" PRIx64 "%016" PRIx64 ".%08" PRIx32 ".honggfuzz.cov",
crc64f, crc64r, (uint32_t)dynfile->size);
}
}
bool input_writeCovFile(const char* dir, dynfile_t* dynfile) {
char fname[PATH_MAX];
input_generateFileName(dynfile, dir, fname);
if (files_exists(fname)) {
LOG_D("File '%s' already exists in the output corpus directory '%s'", fname, dir);
return true;
}
LOG_D("Adding file '%s' to the corpus directory '%s'", fname, dir);
if (!files_writeBufToFile(
fname, dynfile->data, dynfile->size, O_WRONLY | O_CREAT | O_EXCL | O_CLOEXEC)) {
LOG_W("Couldn't write buffer to file '%s' (sz=%zu)", fname, dynfile->size);
return false;
}
return true;
}
/* true if item1 is bigger than item2 */
static bool input_cmpCov(dynfile_t* item1, dynfile_t* item2) {
for (size_t j = 0; j < ARRAYSIZE(item1->cov); j++) {
if (item1->cov[j] > item2->cov[j]) {
return true;
}
if (item1->cov[j] < item2->cov[j]) {
return false;
}
}
/* Both are equal */
return false;
}
#define TAILQ_FOREACH_HF(var, head, field) \
for ((var) = TAILQ_FIRST((head)); (var); (var) = TAILQ_NEXT((var), field))
void input_addDynamicInput(run_t* run) {
ATOMIC_SET(run->global->timing.lastCovUpdate, time(NULL));
dynfile_t* dynfile = (dynfile_t*)util_Calloc(sizeof(dynfile_t));
dynfile->size = run->dynfile->size;
dynfile->timeExecUSecs = util_timeNowUSecs() - run->timeStartedUSecs;
dynfile->data = (uint8_t*)util_AllocCopy(run->dynfile->data, run->dynfile->size);
dynfile->src = run->dynfile->src;
memcpy(dynfile->cov, run->dynfile->cov, sizeof(dynfile->cov));
if (run->dynfile->src) {
ATOMIC_POST_INC(run->dynfile->src->refs);
}
dynfile->phase = fuzz_getState(run->global);
input_generateFileName(dynfile, NULL, dynfile->path);
MX_SCOPED_RWLOCK_WRITE(&run->global->mutex.dynfileq);
dynfile->idx = ATOMIC_PRE_INC(run->global->io.dynfileqCnt);
run->global->feedback.maxCov[0] = HF_MAX(run->global->feedback.maxCov[0], dynfile->cov[0]);
run->global->feedback.maxCov[1] = HF_MAX(run->global->feedback.maxCov[1], dynfile->cov[1]);
run->global->feedback.maxCov[2] = HF_MAX(run->global->feedback.maxCov[2], dynfile->cov[2]);
run->global->feedback.maxCov[3] = HF_MAX(run->global->feedback.maxCov[3], dynfile->cov[3]);
run->global->io.dynfileqMaxSz = HF_MAX(run->global->io.dynfileqMaxSz, dynfile->size);
/* Sort it by coverage - put better coverage earlier in the list */
dynfile_t* iter = NULL;
TAILQ_FOREACH_HF (iter, &run->global->io.dynfileq, pointers) {
if (input_cmpCov(dynfile, iter)) {
TAILQ_INSERT_BEFORE(iter, dynfile, pointers);
break;
}
}
if (iter == NULL) {
TAILQ_INSERT_TAIL(&run->global->io.dynfileq, dynfile, pointers);
}
if (run->global->socketFuzzer.enabled) {
/* Don't add coverage data to files in socketFuzzer mode */
return;
}
const char* outDir =
run->global->io.outputDir ? run->global->io.outputDir : run->global->io.inputDir;
if (!input_writeCovFile(outDir, dynfile)) {
LOG_E("Couldn't save the coverage data to '%s'", run->global->io.outputDir);
}
/* No need to add files to the new coverage dir, if it's not the main phase */
if (fuzz_getState(run->global) != _HF_STATE_DYNAMIC_MAIN) {
return;
}
ATOMIC_POST_INC(run->global->io.newUnitsAdded);
if (run->global->io.covDirNew && !input_writeCovFile(run->global->io.covDirNew, dynfile)) {
LOG_E("Couldn't save the new coverage data to '%s'", run->global->io.covDirNew);
}
}
bool input_inDynamicCorpus(run_t* run, const char* fname) {
MX_SCOPED_RWLOCK_WRITE(&run->global->mutex.dynfileq);
dynfile_t* iter = NULL;
TAILQ_FOREACH_HF (iter, &run->global->io.dynfileq, pointers) {
if (strncmp(iter->path, fname, PATH_MAX) == 0) {
return true;
}
}
return false;
}
static inline int input_speedFactor(run_t* run, dynfile_t* dynfile) {
/* Slower the input, lower the chance of it being tested */
uint64_t avg_usecs_per_input =
((uint64_t)(time(NULL) - run->global->timing.timeStart) * 1000000);
avg_usecs_per_input /= ATOMIC_GET(run->global->cnts.mutationsCnt);
avg_usecs_per_input /= run->global->threads.threadsMax;
/* Cap both vals to 1us-1s */
avg_usecs_per_input = HF_CAP(avg_usecs_per_input, 1U, 1000000U);
uint64_t sample_usecs = HF_CAP(dynfile->timeExecUSecs, 1U, 1000000U);
if (sample_usecs >= avg_usecs_per_input) {
return (int)(sample_usecs / avg_usecs_per_input);
} else {
return -(int)(avg_usecs_per_input / sample_usecs);
}
}
static inline int input_skipFactor(run_t* run, dynfile_t* dynfile, int* speed_factor) {
int penalty = 0;
#if 1
{
*speed_factor = HF_CAP(input_speedFactor(run, dynfile), -10, 5);
penalty += *speed_factor;
}
#endif
#if 0
{
/* Inputs with lower total coverage -> lower chance of being tested */
static const int scaleMap[200] = {
[95 ... 199] = -10,
[80 ... 94] = -2,
[50 ... 79] = 0,
[11 ... 49] = 1,
[0 ... 10] = 2,
};
uint64_t maxCov0 = ATOMIC_GET(run->global->feedback.maxCov[0]);
if (maxCov0) {
const unsigned percentile = (dynfile->cov[0] * 100) / maxCov0;
penalty += scaleMap[percentile];
}
}
#endif
#if 1
{
/* Older inputs -> lower chance of being tested */
static const int scaleMap[200] = {
[98 ... 199] = -20,
[91 ... 97] = -2,
[81 ... 90] = -1,
[71 ... 80] = 0,
[41 ... 70] = 1,
[0 ... 40] = 2,
};
if (dynfile->phase == _HF_STATE_DYNAMIC_MAIN) {
const unsigned percentile = (dynfile->idx * 100) / run->global->io.dynfileqCnt;
penalty += scaleMap[percentile];
}
}
#endif
#if 1
{
/* If the input wasn't source of other inputs so far, make it less likely to be tested */
penalty += HF_CAP((2 - (int)dynfile->refs), -10, 2);
}
#endif
#if 1
{
/* Add penalty for the input being too big - 0 is for 1kB inputs */
if (dynfile->size > 0) {
penalty += HF_CAP(((int)util_Log2(dynfile->size) - 10), -5, 5);
}
}
#endif
return penalty;
}
bool input_prepareDynamicInput(run_t* run, bool needs_mangle) {
if (ATOMIC_GET(run->global->io.dynfileqCnt) == 0) {
LOG_F("The dynamic file corpus is empty. This shouldn't happen");
}
int speed_factor = 0;
for (;;) {
MX_SCOPED_RWLOCK_WRITE(&run->global->mutex.dynfileq);
if (run->global->io.dynfileqCurrent == NULL) {
run->global->io.dynfileqCurrent = TAILQ_FIRST(&run->global->io.dynfileq);
}
if (run->triesLeft) {
run->triesLeft--;
break;
}
run->current = run->global->io.dynfileqCurrent;
run->global->io.dynfileqCurrent = TAILQ_NEXT(run->global->io.dynfileqCurrent, pointers);
int skip_factor = input_skipFactor(run, run->current, &speed_factor);
if (skip_factor <= 0) {
run->triesLeft = -(skip_factor);
break;
}
if ((util_rnd64() % skip_factor) == 0) {
break;
}
}
input_setSize(run, run->current->size);
run->dynfile->idx = run->current->idx;
run->dynfile->timeExecUSecs = run->current->timeExecUSecs;
run->dynfile->src = run->current;
run->dynfile->refs = 0;
run->dynfile->phase = fuzz_getState(run->global);
memcpy(run->dynfile->cov, run->current->cov, sizeof(run->dynfile->cov));
snprintf(run->dynfile->path, sizeof(run->dynfile->path), "%s", run->current->path);
memcpy(run->dynfile->data, run->current->data, run->current->size);
if (needs_mangle) {
mangle_mangleContent(run, speed_factor);
}
return true;
}
const uint8_t* input_getRandomInputAsBuf(run_t* run, size_t* len) {
if (run->global->feedback.dynFileMethod == _HF_DYNFILE_NONE) {
LOG_W(
"The dynamic input queue is empty because no instrumentation mode (-x) was requested");
*len = 0;
return NULL;
}
if (ATOMIC_GET(run->global->io.dynfileqCnt) == 0) {
*len = 0;
return NULL;
}
dynfile_t* current = NULL;
{
MX_SCOPED_RWLOCK_WRITE(&run->global->mutex.dynfileq);
if (run->global->io.dynfileq2Current == NULL) {
run->global->io.dynfileq2Current = TAILQ_FIRST(&run->global->io.dynfileq);
}
current = run->global->io.dynfileq2Current;
run->global->io.dynfileq2Current = TAILQ_NEXT(run->global->io.dynfileq2Current, pointers);
}
*len = current->size;
return current->data;
}
static bool input_shouldReadNewFile(run_t* run) {
if (fuzz_getState(run->global) != _HF_STATE_DYNAMIC_DRY_RUN) {
input_setSize(run, run->global->mutate.maxInputSz);
return true;
}
if (!run->staticFileTryMore) {
run->staticFileTryMore = true;
/* Start with 4 bytes, increase the size in following iterations */
input_setSize(run, HF_MIN(4U, run->global->mutate.maxInputSz));
return true;
}
/* Increase size of the current file by a factor of 2, and return it instead of a new file */
size_t newsz = run->dynfile->size * 2;
if (newsz >= run->global->mutate.maxInputSz) {
/* That's the largest size for this specific file that will be ever used */
newsz = run->global->mutate.maxInputSz;
run->staticFileTryMore = false;
}
input_setSize(run, newsz);
return false;
}
bool input_prepareStaticFile(run_t* run, bool rewind, bool needs_mangle) {
if (input_shouldReadNewFile(run)) {
for (;;) {
if (!input_getNext(run, run->dynfile->path, /* rewind= */ rewind)) {
return false;
}
if (!needs_mangle || !input_inDynamicCorpus(run, run->dynfile->path)) {
LOG_D("Skipping '%s' as it's already in the dynamic corpus", run->dynfile->path);
break;
}
}
run->global->io.testedFileCnt++;
}
char path[PATH_MAX];
snprintf(path, sizeof(path), "%s/%s", run->global->io.inputDir, run->dynfile->path);
ssize_t fileSz = files_readFileToBufMax(path, run->dynfile->data, run->dynfile->size);
if (fileSz < 0) {
LOG_E("Couldn't read contents of '%s'", path);
return false;
}
if (run->staticFileTryMore && ((size_t)fileSz < run->dynfile->size)) {
/* The file is smaller than the requested size, no need to re-read it anymore */
run->staticFileTryMore = false;
}
input_setSize(run, fileSz);
util_memsetInline(run->dynfile->cov, '\0', sizeof(run->dynfile->cov));
run->dynfile->idx = 0;
run->dynfile->src = NULL;
run->dynfile->refs = 0;
run->dynfile->phase = fuzz_getState(run->global);
if (needs_mangle) {
mangle_mangleContent(run, /* slow_factor= */ 0);
}
return true;
}
bool input_removeStaticFile(const char* dir, const char* name) {
char path[PATH_MAX];
snprintf(path, sizeof(path), "%s/%s", dir, name);
if (unlink(path) == -1 && errno != EEXIST) {
PLOG_E("unlink('%s') failed", path);
return false;
}
return true;
}
bool input_prepareExternalFile(run_t* run) {
snprintf(run->dynfile->path, sizeof(run->dynfile->path), "[EXTERNAL]");
int fd = files_writeBufToTmpFile(run->global->io.workDir, (const uint8_t*)"", 0, 0);
if (fd == -1) {
LOG_E("Couldn't write input file to a temporary buffer");
return false;
}
defer {
close(fd);
};
char fname[PATH_MAX];
snprintf(fname, sizeof(fname), "/dev/fd/%d", fd);
const char* const argv[] = {run->global->exe.externalCommand, fname, NULL};
if (subproc_System(run, argv) != 0) {
LOG_E("Subprocess '%s' returned abnormally", run->global->exe.externalCommand);
return false;
}
LOG_D("Subporcess '%s' finished with success", run->global->exe.externalCommand);
input_setSize(run, run->global->mutate.maxInputSz);
ssize_t sz = files_readFromFdSeek(fd, run->dynfile->data, run->global->mutate.maxInputSz, 0);
if (sz == -1) {
LOG_E("Couldn't read file from fd=%d", fd);
return false;
}
input_setSize(run, (size_t)sz);
return true;
}
bool input_postProcessFile(run_t* run, const char* cmd) {
int fd =
files_writeBufToTmpFile(run->global->io.workDir, run->dynfile->data, run->dynfile->size, 0);
if (fd == -1) {
LOG_E("Couldn't write input file to a temporary buffer");
return false;
}
defer {
close(fd);
};
char fname[PATH_MAX];
snprintf(fname, sizeof(fname), "/dev/fd/%d", fd);
const char* const argv[] = {cmd, fname, NULL};
if (subproc_System(run, argv) != 0) {
LOG_E("Subprocess '%s' returned abnormally", cmd);
return false;
}
LOG_D("Subporcess '%s' finished with success", cmd);
input_setSize(run, run->global->mutate.maxInputSz);
ssize_t sz = files_readFromFdSeek(fd, run->dynfile->data, run->global->mutate.maxInputSz, 0);
if (sz == -1) {
LOG_E("Couldn't read file from fd=%d", fd);
return false;
}
input_setSize(run, (size_t)sz);
return true;
}