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afl-showmap fix

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This commit is contained in:
van Hauser
2020-02-05 17:33:02 +01:00
parent 599f78a4bd
commit 1edc392194
6 changed files with 91 additions and 73 deletions
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100
src/afl-showmap.c
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@ -77,7 +77,7 @@ u8 uses_asan;
u8* trace_bits; /* SHM with instrumentation bitmap */
u8 *out_file, /* Trace output file */
*stdin_file, /* stdin file */
*stdin_file, /* stdin file */
*in_dir, /* input folder */
*doc_path, /* Path to docs */
*at_file; /* Substitution string for @@ */
@ -89,8 +89,7 @@ u32 exec_tmout; /* Exec timeout (ms) */
static u32 total, highest; /* tuple content information */
static u32 in_len, /* Input data length */
arg_offset,
total_execs; /* Total number of execs */
arg_offset, total_execs; /* Total number of execs */
u64 mem_limit = MEM_LIMIT; /* Memory limit (MB) */
@ -169,7 +168,7 @@ static void at_exit_handler(void) {
/* Write results. */
static u32 write_results_to_file(u8 *out_file) {
static u32 write_results_to_file(u8* out_file) {
s32 fd;
u32 i, ret = 0;
@ -243,7 +242,7 @@ static u32 write_results_to_file(u8 *out_file) {
static u32 write_results(void) {
return write_results_to_file(out_file);
}
/* Write output file. */
@ -272,16 +271,10 @@ static s32 write_to_file(u8* path, u8* mem, u32 len) {
static void write_to_testcase(void* mem, u32 len) {
if (use_stdin) {
lseek(out_fd, 0, SEEK_SET);
ck_write(out_fd, mem, len, out_file);
if (ftruncate(out_fd, len)) PFATAL("ftruncate() failed");
lseek(out_fd, 0, SEEK_SET);
}
lseek(out_fd, 0, SEEK_SET);
ck_write(out_fd, mem, len, out_file);
if (ftruncate(out_fd, len)) PFATAL("ftruncate() failed");
lseek(out_fd, 0, SEEK_SET);
}
@ -383,14 +376,15 @@ static u8 run_target_forkserver(char** argv, u8* mem, u32 len) {
/* Read initial file. */
u32 read_file(u8 *in_file) {
u32 read_file(u8* in_file) {
struct stat st;
s32 fd = open(in_file, O_RDONLY);
if (fd < 0) WARNF("Unable to open '%s'", in_file);
if (fstat(fd, &st) || !st.st_size) WARNF("Zero-sized input file '%s'.", in_file);
if (fstat(fd, &st) || !st.st_size)
WARNF("Zero-sized input file '%s'.", in_file);
in_len = st.st_size;
in_data = ck_alloc_nozero(in_len);
@ -399,9 +393,10 @@ u32 read_file(u8 *in_file) {
close(fd);
//OKF("Read %u byte%s from '%s'.", in_len, in_len == 1 ? "" : "s", in_file);
// OKF("Read %u byte%s from '%s'.", in_len, in_len == 1 ? "" : "s", in_file);
return in_len;
}
/* Execute target application. */
@ -643,7 +638,8 @@ static void usage(u8* argv0) {
"Other settings:\n\n"
" -i dir - process all files in this directory, -o must be a directory\n"
" -i dir - process all files in this directory, -o must be a "
"directory\n"
" and each bitmap will be written there individually.\n"
" -q - sink program's output and don't show messages\n"
" -e - show edge coverage only, ignore hit counts\n"
@ -900,18 +896,17 @@ int main(int argc, char** argv) {
}
if (in_dir) {
if (in_dir) {
if (at_file) PFATAL("Options -A and -i are mutually exclusive");
at_file = "@@";
}
detect_file_args(argv + optind, at_file);
detect_file_args(argv + optind, "");
for (i = optind; i < argc; i++)
if (strcmp(argv[i], "@@") == 0)
arg_offset = i;
if (strcmp(argv[i], "@@") == 0) arg_offset = i;
if (qemu_mode) {
@ -926,10 +921,10 @@ int main(int argc, char** argv) {
if (in_dir) {
DIR *dir_in, *dir_out;
DIR * dir_in, *dir_out;
struct dirent* dir_ent;
int done = 0;
u8 infile[4096], outfile[4096];
int done = 0;
u8 infile[4096], outfile[4096];
dev_null_fd = open("/dev/null", O_RDWR);
if (dev_null_fd < 0) PFATAL("Unable to open /dev/null");
@ -940,44 +935,56 @@ int main(int argc, char** argv) {
if (mkdir(out_file, 0700))
PFATAL("cannot create output directory %s", out_file);
if (arg_offset) argv[arg_offset] = infile;
else {
u8* use_dir = ".";
u8* use_dir = ".";
if (access(use_dir, R_OK | W_OK | X_OK)) {
if (access(use_dir, R_OK | W_OK | X_OK)) {
use_dir = getenv("TMPDIR");
if (!use_dir) use_dir = "/tmp";
use_dir = getenv("TMPDIR");
if (!use_dir) use_dir = "/tmp";
}
}
stdin_file = alloc_printf("%s/.afl-tmin-temp-%u", use_dir, getpid());
unlink(stdin_file);
atexit(at_exit_handler);
out_fd = open(stdin_file, O_RDWR | O_CREAT | O_EXCL, 0600);
if (out_fd < 0) PFATAL("Unable to create '%s'", out_file);
if (arg_offset) argv[arg_offset] = stdin_file;
if (getenv("AFL_DEBUG")) {
int i = optind;
SAYF(cMGN "[D]" cRST " %s:", target_path);
while (argv[i] != NULL)
SAYF(" \"%s\"", argv[i++]);
SAYF("\n");
SAYF(cMGN "[D]" cRST " %d - %d = %d, %s\n", arg_offset, optind,
arg_offset - optind, infile);
stdin_file = alloc_printf("%s/.afl-tmin-temp-%u", use_dir, getpid());
unlink(stdin_file);
atexit(at_exit_handler);
out_fd = open(stdin_file, O_RDWR | O_CREAT | O_EXCL, 0600);
if (out_fd < 0) PFATAL("Unable to create '%s'", out_file);
}
init_forkserver(use_argv);
while (done == 0 && (dir_ent = readdir(dir_in))) {
if (dir_ent->d_name[0] == '.') continue; // skip anything that starts with '.'
if (dir_ent->d_type != DT_REG) continue; // only regular files
if (dir_ent->d_name[0] == '.')
continue; // skip anything that starts with '.'
if (dir_ent->d_type != DT_REG) continue; // only regular files
snprintf(infile, sizeof(infile), "%s/%s", in_dir, dir_ent->d_name);
snprintf(outfile, sizeof(outfile), "%s/%s", out_file, dir_ent->d_name);
if (read_file(infile)) {
run_target_forkserver(use_argv, in_data, in_len);
ck_free(in_data);
tcnt = write_results_to_file(outfile);
}
}
if (!quiet_mode) OKF("Processed %u input files.", total_execs);
} else {
@ -998,3 +1005,4 @@ int main(int argc, char** argv) {
exit(child_crashed * 2 + child_timed_out);
}