hex.c

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/*
 * hex.c
 *
 * Copyright (c) 2001 Dug Song <dugsong@monkey.org>
 *
 * $Id: hex.c,v 1.6 2004/03/28 17:38:18 dugsong Exp $
 */

#include "config.h"

#include <sys/types.h>

#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include "dnet.h"
#include "aton.h"
#include "mod.h"

void
hex_usage(void)
{
        fprintf(stderr, "Usage: dnet hex <string> ...\n");
        exit(1);
}

int
hex_main(int argc, char *argv[])
{
        char buf[IP_LEN_MAX], *p = buf;
        int c, len;
        
        if (argc == 1 || *(argv[1]) == '-')
                hex_usage();
        
        for (c = 1; c < argc; c++) {
                if ((len = fmt_aton(argv[c], (u_char *)argv[c])) < 0)
                        hex_usage();
                
                if (write(STDOUT_FILENO, argv[c], len) != len)
                        err(1, "write");
        }
        if (!isatty(STDIN_FILENO)) {
                len = sizeof(buf);
                while ((c = read(STDIN_FILENO, p, len)) > 0) {
                        p += c;
                        len -= c;
                }
                len = p - buf;
                if (write(STDOUT_FILENO, buf, len) != len)
                        err(1, "write");
        }                                  
        return (0);
}

struct mod mod_hex = {
        "hex",
        MOD_TYPE_DATA,
        hex_main
};

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