81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
/*
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* Copyright (c) 2017 Stephen Heumann
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* This file is a template for computing file checksums with the various
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* different hash functions from lib65816hash. This should be #included
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* from another file after HASH_FUNCTION is defined to the name of the
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* hash function to use and the corresponding header is included.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <time.h>
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#define join(a,b) a##b
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#define concat(a,b) join(a,b)
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unsigned char buf[0x8000ul];
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int main(int argc, char **argv) {
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struct concat(HASH_FUNCTION,_context) ctx;
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FILE *file;
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size_t count;
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int i, n;
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#ifdef RANDOMIZE_READ_SIZE
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srand(time(NULL));
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#endif
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if (argc < 2) {
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fprintf(stderr, "Usage: %s filename ...\n", argv[0]);
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return EXIT_FAILURE;
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}
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for (n = 1; n < argc; n++) {
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file = fopen(argv[n], "rb");
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if (file == NULL) {
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perror(argv[n]);
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return EXIT_FAILURE;
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}
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concat(HASH_FUNCTION,_init)(&ctx);
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do {
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#ifdef RANDOMIZE_READ_SIZE
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count = (rand() & 0x7FFF) + 1;
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#else
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count = 0x8000ul;
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#endif
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count = fread(buf, 1, count, file);
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concat(HASH_FUNCTION,_update)(&ctx, buf, count);
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} while (count != 0);
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if (ferror(file)) {
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fprintf(stderr, "Error reading file\n");
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}
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fclose(file);
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concat(HASH_FUNCTION,_finalize)(&ctx);
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for (i = 0; i < sizeof(ctx.hash); i++) {
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printf("%02x", ctx.hash[i]);
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}
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printf(" %s\n", argv[n]);
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}
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return 0;
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}
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