lsflib/tools/dump.c
author Markus Bröker <mbroeker@largo.dyndns.tv>
Tue, 13 Oct 2009 19:03:36 +0200
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Compont Literals in C aka Anonymous arrays committer: Markus Bröker <mbroeker@largo.homelinux.org>
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/**
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 * lsflib/tools/dump.c
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 * Copyright (C) 2008 Markus Broeker
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 */
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <string.h>
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#include <unistd.h>
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#include <getopt.h>
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#include <bits.h>
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int main (int argc, char **argv)
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{
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    int fd;;
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    int len;
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    int i;
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    char buffer[81];
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    char key = 0xf3;
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    int use_BINARY, use_NOT, use_HEX, use_XOR;
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    use_XOR = use_HEX = use_BINARY = use_NOT = *buffer = 0;
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    while ((i = getopt (argc, argv, "bhnk:x?")) >= 0) {
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        switch (i) {
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        case 'b':
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            use_BINARY = 1;
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            break;
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        case 'h':
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            use_HEX = 1;
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            break;
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        case 'k':
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            key = atoi (optarg);
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            break;
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        case 'n':
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            use_NOT = 1;
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            break;
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        case 'x':
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            use_XOR = 1;
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            break;
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        case '?':
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            printf ("Usage: %s [ -b|-h|-n|-x|-? ] [ file ]\n", argv[0]);
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            printf ("b: binary\nh: hex\nn: not\nx: xor\n");
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            printf ("If no filename is given, stdin is assumed\n");
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            return 0;
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        }
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    }
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    if (optind == argc)
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        fd = fileno (stdin);
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    else {
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        if ((fd = open (argv[optind], O_RDONLY)) == -1) {
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            perror ("OPEN");
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            return EXIT_SUCCESS;
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        }
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    }
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    while ((len = read (fd, buffer, 1)) > 0) {
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        buffer[len] = 0;
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        if (use_BINARY && use_XOR && use_NOT) {
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            bindump (not (xor (buffer, key)), BITS);
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        } else if (use_BINARY && use_XOR) {
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            bindump (xor (buffer, key), BITS);
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        } else if (use_BINARY && use_NOT) {
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            bindump (not (buffer), BITS);
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        } else if (use_BINARY) {
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            bindump (buffer, BITS);
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        } else if (use_HEX && use_XOR && use_NOT) {
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            hexdump (not (xor (buffer, key)), len);
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        } else if (use_HEX && use_XOR) {
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            hexdump (xor (buffer, key), len);
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        } else if (use_HEX && use_NOT) {
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            hexdump (not (buffer), len);
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        } else if (use_HEX) {
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            hexdump (buffer, len);
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        } else if (use_XOR && use_NOT) {
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            printf ("%s", not (xor (buffer, key)));
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        } else if (use_XOR) {
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            printf ("%s", xor (buffer, key));
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        } else if (use_NOT) {
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            printf ("%s", not (buffer));
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        } else
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            printf ("%s", buffer);
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    }
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    close (fd);
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    return 0;
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}