1 #include <stdint.h>
2 #include <stdio.h>
3 #include <stdlib.h>
4
5 #include "testinput.h"
6
7 /**
8 * Main procedure for standalone fuzzing engine.
9 *
10 * Reads filenames from the argument array. For each filename, read the file
11 * into memory and then call the fuzzing interface with the data.
12 */
main(int argc,char ** argv)13 int main(int argc, char **argv)
14 {
15 int ii;
16 for(ii = 1; ii < argc; ii++)
17 {
18 FILE *infile;
19 printf("[%s] ", argv[ii]);
20
21 /* Try and open the file. */
22 infile = fopen(argv[ii], "rb");
23 if(infile)
24 {
25 uint8_t *buffer = NULL;
26 size_t buffer_len;
27
28 printf("Opened.. ");
29
30 /* Get the length of the file. */
31 fseek(infile, 0L, SEEK_END);
32 buffer_len = ftell(infile);
33
34 /* Reset the file indicator to the beginning of the file. */
35 fseek(infile, 0L, SEEK_SET);
36
37 /* Allocate a buffer for the file contents. */
38 buffer = (uint8_t *)calloc(buffer_len, sizeof(uint8_t));
39 if(buffer)
40 {
41 size_t result;
42
43 /* Read all the text from the file into the buffer. */
44 result = fread(buffer, sizeof(uint8_t), buffer_len, infile);
45
46 if (result == buffer_len)
47 {
48 printf("Read %zu bytes, fuzzing.. ", buffer_len);
49 /* Call the fuzzer with the data. */
50 LLVMFuzzerTestOneInput(buffer, buffer_len);
51
52 printf("complete !!");
53 }
54 else
55 {
56 fprintf(stderr,
57 "Failed to read %zu bytes (result %zu)\n",
58 buffer_len,
59 result);
60 }
61
62 /* Free the buffer as it's no longer needed. */
63 free(buffer);
64 buffer = NULL;
65 }
66 else
67 {
68 fprintf(stderr,
69 "[%s] Failed to allocate %zu bytes \n",
70 argv[ii],
71 buffer_len);
72 }
73
74 /* Close the file as it's no longer needed. */
75 fclose(infile);
76 infile = NULL;
77 }
78 else
79 {
80 /* Failed to open the file. Maybe wrong name or wrong permissions? */
81 fprintf(stderr, "[%s] Open failed. \n", argv[ii]);
82 }
83
84 printf("\n");
85 }
86 }
87