33 lines
718 B
C
33 lines
718 B
C
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/*
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* ZMap Copyright 2013 Regents of the University of Michigan
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy
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* of the License at http://www.apache.org/licenses/LICENSE-2.0
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*/
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#include "random.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <errno.h>
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#include "logger.h"
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#define RANDSRC "/dev/urandom"
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int random_bytes(void *dst, size_t n)
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{
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FILE *f = fopen(RANDSRC, "rb");
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if (!f) {
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log_fatal("random", "unable to read /dev/urandom: %s",
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strerror(errno));
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}
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size_t r = fread(dst, n, 1, f);
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fclose(f);
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if (r < 1) {
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return 0;
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}
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return 1;
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}
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