1 /*
2 * Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 * https://www.openssl.org/source/license.html
8 * or in the file LICENSE in the source distribution.
9 */
10
11 /*
12 * Given a list of files, run each of them through the fuzzer. Note that
13 * failure will be indicated by some kind of crash. Switching on things like
14 * asan improves the test.
15 */
16
17 #include <stdio.h>
18 #include <stdlib.h>
19 #include <string.h>
20 #include <sys/stat.h>
21 #include <openssl/crypto.h>
22 #include "fuzzer.h"
23 #include "internal/o_dir.h"
24
25 #if defined(_WIN32) && defined(_MAX_PATH) && !defined(PATH_MAX)
26 # define PATH_MAX _MAX_PATH
27 #endif
28
29 #ifndef PATH_MAX
30 # define PATH_MAX 4096
31 #endif
32
33 # if !defined(S_ISREG)
34 # define S_ISREG(m) ((m) & S_IFREG)
35 # endif
36
testfile(const char * pathname)37 static void testfile(const char *pathname)
38 {
39 struct stat st;
40 FILE *f;
41 unsigned char *buf;
42 size_t s;
43
44 if (stat(pathname, &st) < 0 || !S_ISREG(st.st_mode))
45 return;
46 printf("# %s\n", pathname);
47 fflush(stdout);
48 f = fopen(pathname, "rb");
49 if (f == NULL)
50 return;
51 buf = malloc(st.st_size);
52 if (buf != NULL) {
53 s = fread(buf, 1, st.st_size, f);
54 OPENSSL_assert(s == (size_t)st.st_size);
55 FuzzerTestOneInput(buf, s);
56 free(buf);
57 }
58 fclose(f);
59 }
60
main(int argc,char ** argv)61 int main(int argc, char **argv) {
62 int n;
63
64 FuzzerInitialize(&argc, &argv);
65
66 for (n = 1; n < argc; ++n) {
67 size_t dirname_len = strlen(argv[n]);
68 const char *filename = NULL;
69 char *pathname = NULL;
70 OPENSSL_DIR_CTX *ctx = NULL;
71 int wasdir = 0;
72
73 /*
74 * We start with trying to read the given path as a directory.
75 */
76 while ((filename = OPENSSL_DIR_read(&ctx, argv[n])) != NULL) {
77 wasdir = 1;
78 if (pathname == NULL) {
79 pathname = malloc(PATH_MAX);
80 if (pathname == NULL)
81 break;
82 strcpy(pathname, argv[n]);
83 #ifdef __VMS
84 if (strchr(":<]", pathname[dirname_len - 1]) == NULL)
85 #endif
86 pathname[dirname_len++] = '/';
87 pathname[dirname_len] = '\0';
88 }
89 strcpy(pathname + dirname_len, filename);
90 testfile(pathname);
91 }
92 OPENSSL_DIR_end(&ctx);
93
94 /* If it wasn't a directory, treat it as a file instead */
95 if (!wasdir)
96 testfile(argv[n]);
97
98 free(pathname);
99 }
100
101 FuzzerCleanup();
102
103 return 0;
104 }
105
