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/*
* Copyright(c) 2017-2019 Tim Ruehsen
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* This file is part of libtasn1.
*/
#include "../config.h"
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/stat.h>
#include "fuzzer.h"
#ifdef TEST_RUN
# include <dirent.h>
static int
test_single_file (const char *fname)
{
int fd, ret;
struct stat st;
uint8_t *data;
ssize_t n;
if ((fd = open (fname, O_RDONLY)) == -1)
{
fprintf (stderr, "Failed to open %s (%d)\n", fname, errno);
return -1;
}
if (fstat (fd, &st) != 0)
{
fprintf (stderr, "Failed to stat %d (%d)\n", fd, errno);
close (fd);
return -1;
}
data = malloc (st.st_size);
if ((n = read (fd, data, st.st_size)) == st.st_size)
{
printf ("testing %llu bytes from '%s'\n",
(unsigned long long) st.st_size, fname);
fflush (stdout);
LLVMFuzzerTestOneInput (data, st.st_size);
fflush (stderr);
ret = 0;
}
else
{
fprintf (stderr, "Failed to read %llu bytes from %s (%d), got %zd\n",
(unsigned long long) st.st_size, fname, errno, n);
ret = -1;
}
free (data);
close (fd);
return ret;
}
static void
test_all_from (const char *dirname)
{
DIR *dirp;
struct dirent *dp;
char fname[1024];
int len;
if ((dirp = opendir (dirname)))
{
while ((dp = readdir (dirp)))
{
if (*dp->d_name == '.')
continue;
len =
snprintf (fname, sizeof (fname), "%s/%s", dirname, dp->d_name);
if (len < 0 || len >= (int) sizeof (fname))
{
fprintf (stderr, "File name truncation: %s/%s\n", dirname,
dp->d_name);
continue;
}
int fd;
if ((fd = open (fname, O_RDONLY)) == -1)
{
fprintf (stderr, "Failed to open %s (%d)\n", fname, errno);
continue;
}
struct stat st;
if (fstat (fd, &st) != 0)
{
fprintf (stderr, "Failed to stat %d (%d)\n", fd, errno);
close (fd);
continue;
}
uint8_t *data = malloc (st.st_size);
ssize_t n;
if ((n = read (fd, data, st.st_size)) == st.st_size)
{
printf ("testing %llu bytes from '%s'\n",
(unsigned long long) st.st_size, fname);
LLVMFuzzerTestOneInput (data, st.st_size);
}
else
fprintf (stderr,
"Failed to read %llu bytes from %s (%d), got %d\n",
(unsigned long long) st.st_size, fname, errno, (int) n);
free (data);
close (fd);
}
closedir (dirp);
}
}
int
main (int argc, char **argv)
{
int len;
/* if VALGRIND testing is enabled, we have to call ourselves with valgrind checking */
if (argc == 1)
{
const char *valgrind = getenv ("TESTS_VALGRIND");
if (valgrind && *valgrind)
{
char cmd[1024]; /* avoid alloca / VLA / heap allocation */
len =
snprintf (cmd, sizeof (cmd), "TESTS_VALGRIND=" " %s %s", valgrind,
argv[0]);
if (len < 0 || len >= (int) sizeof (cmd))
return 1; /* failure on command truncation */
return system (cmd) != 0;
}
}
if (argc > 1)
return test_single_file (argv[1]);
const char *target = strrchr (argv[0], '/');
target = target ? target + 1 : argv[0];
char corporadir[1024]; /* avoid alloca / VLA / heap allocation */
len = snprintf (corporadir, sizeof (corporadir), SRCDIR "/%s.in", target);
if (len < 0 || len >= (int) sizeof (corporadir))
return 1; /* failure on file name truncation */
test_all_from (corporadir);
snprintf (corporadir, sizeof (corporadir), SRCDIR "/%s.repro", target);
test_all_from (corporadir);
return 0;
}
#else
# ifndef __AFL_LOOP
static int
__AFL_LOOP (int n)
{
static int first = 1;
if (first)
{
first = 0;
return 1;
}
return 0;
}
# endif
int
main (int argc, char **argv)
{
int ret;
unsigned char buf[64 * 1024];
while (__AFL_LOOP (10000))
{ // only works with afl-clang-fast
ret = fread (buf, 1, sizeof (buf), stdin);
if (ret < 0)
return 0;
LLVMFuzzerTestOneInput (buf, ret);
}
return 0;
}
#endif /* TEST_RUN */
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