55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
/*
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* convert binary form of subnet description to text
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* Copyright (C) 2000 Henry Spencer.
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*
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Library General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/lgpl.txt>.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
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* License for more details.
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*/
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#include "internal.h"
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#include "freeswan.h"
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/*
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- subnettot - convert subnet to text "addr/bitcount"
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*/
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size_t /* space needed for full conversion */
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subnettot(sub, format, dst, dstlen)
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const ip_subnet *sub;
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int format; /* character */
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char *dst; /* need not be valid if dstlen is 0 */
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size_t dstlen;
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{
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size_t len;
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size_t rest;
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char *p;
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switch (format) {
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case 0:
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break;
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default:
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return 0;
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break;
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}
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len = addrtot(&sub->addr, format, dst, dstlen);
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if (len < dstlen) {
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dst[len - 1] = '/';
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p = dst + len;
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rest = dstlen - len;
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} else {
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p = NULL;
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rest = 0;
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}
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len += ultoa((unsigned long)sub->maskbits, 10, p, rest);
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return len;
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}
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