standaloneengine.c File Reference

#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include "fuzz.h"

Go to the source code of this file.

Functions
int	main (int argc, char **argv)

Function Documentation

main()

int main	(	int	argc,
		char **	argv
	)

Main procedure for standalone fuzzing engine.

Reads filenames from the argument array. For each filename, read the file into memory and then call the fuzzing interface with the data.

Definition at line 13 of file standaloneengine.c.

{
  int ii;
  for(ii = 1; ii < argc; ii++)
  {
    FILE *infile;
    printf("[%s] ", argv[ii]);
 
    /* Try and open the file. */
    infile = fopen(argv[ii], "rb");
    if(infile)
    {
      uint8_t *buffer = NULL;
      size_t buffer_len;
 
      printf("Opened.. ");
 
      /* Get the length of the file. */
      fseek(infile, 0L, SEEK_END);
      buffer_len = ftell(infile);
 
      /* Reset the file indicator to the beginning of the file. */
      fseek(infile, 0L, SEEK_SET);
 
      /* Allocate a buffer for the file contents. */
      buffer = (uint8_t *)calloc(buffer_len, sizeof(uint8_t));
      if(buffer)
      {
        /* Read all the text from the file into the buffer. */
        fread(buffer, sizeof(uint8_t), buffer_len, infile);
        printf("Read %zu bytes, fuzzing.. ", buffer_len);
 
        /* Call the fuzzer with the data. */
        LLVMFuzzerTestOneInput(buffer, buffer_len);
 
        printf("complete !!");
 
        /* Free the buffer as it's no longer needed. */
        free(buffer);
        buffer = NULL;
      }
      else
      {
        fprintf(stderr,
                "[%s] Failed to allocate %zu bytes \n",
                argv[ii],
                buffer_len);
      }
 
      /* Close the file as it's no longer needed. */
      fclose(infile);
      infile = NULL;
    }
    else
    {
      /* Failed to open the file. Maybe wrong name or wrong permissions? */
      fprintf(stderr, "[%s] Open failed. \n", argv[ii]);
    }
 
    printf("\n");
  }
}

References argv, calloc(), benchmark::FILE, free(), L, LLVMFuzzerTestOneInput(), NULL, printf(), SEEK_END, and SEEK_SET.