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/* $OpenBSD: print.c,v 1.11 2016/02/06 23:50:10 krw Exp $ */ |
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/* Turn data structures into printable text. */ |
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/* |
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* Copyright (c) 1995, 1996, 1997, 1998 The Internet Software Consortium. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of The Internet Software Consortium nor the names |
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* of its contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND |
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* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, |
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* This software has been written for the Internet Software Consortium |
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* by Ted Lemon <mellon@fugue.com> in cooperation with Vixie |
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* Enterprises. To learn more about the Internet Software Consortium, |
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* see ``http://www.vix.com/isc''. To learn more about Vixie |
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* Enterprises, see ``http://www.vix.com''. |
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*/ |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <net/if.h> |
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#include <netinet/in.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include "dhcp.h" |
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#include "tree.h" |
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#include "dhcpd.h" |
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char * |
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print_hw_addr(int htype, int hlen, unsigned char *data) |
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{ |
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static char habuf[49]; |
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int i, j, slen = sizeof(habuf); |
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char *s = habuf; |
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if (htype == 0 || hlen == 0) { |
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bad: |
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strlcpy(habuf, "<null>", sizeof habuf); |
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return habuf; |
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} |
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for (i = 0; i < hlen; i++) { |
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j = snprintf(s, slen, "%02x", data[i]); |
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if (j <= 0 || j >= slen) |
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goto bad; |
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j = strlen(s); |
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s += j; |
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slen -= (j + 1); |
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*s++ = ':'; |
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} |
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*--s = '\0'; |
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return habuf; |
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} |