xref: /onnv-gate/usr/src/lib/libast/common/string/fmtip4.c (revision 12068:08a39a083754)
14887Schin /***********************************************************************
24887Schin *                                                                      *
34887Schin *               This software is part of the ast package               *
4*12068SRoger.Faulkner@Oracle.COM *          Copyright (c) 1985-2010 AT&T Intellectual Property          *
54887Schin *                      and is licensed under the                       *
64887Schin *                  Common Public License, Version 1.0                  *
78462SApril.Chin@Sun.COM *                    by AT&T Intellectual Property                     *
84887Schin *                                                                      *
94887Schin *                A copy of the License is available at                 *
104887Schin *            http://www.opensource.org/licenses/cpl1.0.txt             *
114887Schin *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
124887Schin *                                                                      *
134887Schin *              Information and Software Systems Research               *
144887Schin *                            AT&T Research                             *
154887Schin *                           Florham Park NJ                            *
164887Schin *                                                                      *
174887Schin *                 Glenn Fowler <gsf@research.att.com>                  *
184887Schin *                  David Korn <dgk@research.att.com>                   *
194887Schin *                   Phong Vo <kpv@research.att.com>                    *
204887Schin *                                                                      *
214887Schin ***********************************************************************/
224887Schin #pragma prototyped
234887Schin 
244887Schin #include <ast.h>
254887Schin 
264887Schin /*
274887Schin  * format 4 byte local byte order ip address
284887Schin  * and optional prefix bits (if 0 <= bits <= 32)
294887Schin  */
304887Schin 
314887Schin char*
fmtip4(register uint32_t addr,int bits)324887Schin fmtip4(register uint32_t addr, int bits)
334887Schin {
344887Schin 	char*	buf;
354887Schin 	int	z;
364887Schin 	int	i;
374887Schin 
384887Schin 	buf = fmtbuf(z = 20);
394887Schin 	i = sfsprintf(buf, z, "%d.%d.%d.%d", (addr>>24)&0xff, (addr>>16)&0xff, (addr>>8)&0xff, (addr)&0xff);
404887Schin 	if (bits >= 0 && bits <= 32)
414887Schin 		sfsprintf(buf + i, z - i, "/%d", bits);
424887Schin 	return buf;
434887Schin }
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