1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#include <errno.h>
#include <fcntl.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include "fuzz.h"
#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
#include <dirent.h>
static void
test_one_file(const char *filename) {
int fd;
struct stat st;
char *data;
ssize_t n;
if ((fd = open(filename, O_RDONLY)) == -1) {
fprintf(stderr, "Failed to open %s: %s\n", filename,
strerror(errno));
return;
}
if (fstat(fd, &st) != 0) {
fprintf(stderr, "Failed to stat %s: %s\n", filename,
strerror(errno));
goto closefd;
}
data = malloc(st.st_size);
n = read(fd, data, st.st_size);
if (n == st.st_size) {
printf("testing %zd bytes from %s\n", n, filename);
fflush(stdout);
LLVMFuzzerTestOneInput((const uint8_t *)data, n);
fflush(stderr);
} else {
if (n < 0) {
fprintf(stderr,
"Failed to read %zd bytes from %s: %s\n",
(ssize_t)st.st_size, filename, strerror(errno));
} else {
fprintf(stderr,
"Failed to read %zd bytes from %s, got %zd\n",
(ssize_t)st.st_size, filename, n);
}
}
free(data);
closefd:
close(fd);
}
static void
test_all_from(const char *dirname) {
DIR *dirp;
struct dirent *dp;
dirp = opendir(dirname);
if (dirp == NULL) {
return;
}
while ((dp = readdir(dirp)) != NULL) {
char filename[strlen(dirname) + strlen(dp->d_name) + 2];
if (dp->d_name[0] == '.') {
continue;
}
snprintf(filename, sizeof(filename), "%s/%s", dirname,
dp->d_name);
test_one_file(filename);
}
closedir(dirp);
}
int
main(int argc, char **argv) {
int ret;
char corpusdir[PATH_MAX];
const char *target = strrchr(argv[0], '/');
ret = LLVMFuzzerInitialize(&argc, &argv);
if (ret != 0) {
fprintf(stderr, "LLVMFuzzerInitialize failure: %d\n", ret);
return 1;
}
if (argv[1] != NULL && strcmp(argv[1], "-d") == 0) {
debug = true;
argv++;
argc--;
}
if (argv[1] != NULL) {
while (argv[1] != NULL) {
test_one_file(argv[1]);
argv++;
argc--;
}
POST(argc);
return (0);
}
target = (target != NULL) ? target + 1 : argv[0];
if (strncmp(target, "lt-", 3) == 0) {
target += 3;
}
snprintf(corpusdir, sizeof(corpusdir), FUZZDIR "/%s.in", target);
test_all_from(corpusdir);
return (0);
}
#elif __AFL_COMPILER
int
main(int argc, char **argv) {
int ret;
unsigned char buf[64 * 1024];
LLVMFuzzerInitialize(&argc, &argv);
if (ret != 0) {
fprintf(stderr, "LLVMFuzzerInitialize failure: %d\n", ret);
return 1;
}
#ifdef __AFL_LOOP
while (__AFL_LOOP(10000)) { /* only works with afl-clang-fast */
#else /* ifdef __AFL_LOOP */
{
#endif /* ifdef __AFL_LOOP */
ret = fread(buf, 1, sizeof(buf), stdin);
if (ret < 0) {
return (0);
}
LLVMFuzzerTestOneInput(buf, ret);
}
return (0);
}
#endif /* FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION */
|
