xref: /xnu-10002.41.9/libkern/net/inet_ntoa.c (revision 699cd48037512bf4380799317ca44ca453c82f57)
1*699cd480SApple OSS Distributions /*-
2*699cd480SApple OSS Distributions  * Copyright 1994, 1995 Massachusetts Institute of Technology
3*699cd480SApple OSS Distributions  *
4*699cd480SApple OSS Distributions  * Permission to use, copy, modify, and distribute this software and
5*699cd480SApple OSS Distributions  * its documentation for any purpose and without fee is hereby
6*699cd480SApple OSS Distributions  * granted, provided that both the above copyright notice and this
7*699cd480SApple OSS Distributions  * permission notice appear in all copies, that both the above
8*699cd480SApple OSS Distributions  * copyright notice and this permission notice appear in all
9*699cd480SApple OSS Distributions  * supporting documentation, and that the name of M.I.T. not be used
10*699cd480SApple OSS Distributions  * in advertising or publicity pertaining to distribution of the
11*699cd480SApple OSS Distributions  * software without specific, written prior permission.  M.I.T. makes
12*699cd480SApple OSS Distributions  * no representations about the suitability of this software for any
13*699cd480SApple OSS Distributions  * purpose.  It is provided "as is" without express or implied
14*699cd480SApple OSS Distributions  * warranty.
15*699cd480SApple OSS Distributions  *
16*699cd480SApple OSS Distributions  * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''.  M.I.T. DISCLAIMS
17*699cd480SApple OSS Distributions  * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
18*699cd480SApple OSS Distributions  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19*699cd480SApple OSS Distributions  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
20*699cd480SApple OSS Distributions  * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21*699cd480SApple OSS Distributions  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22*699cd480SApple OSS Distributions  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
23*699cd480SApple OSS Distributions  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24*699cd480SApple OSS Distributions  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25*699cd480SApple OSS Distributions  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
26*699cd480SApple OSS Distributions  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27*699cd480SApple OSS Distributions  * SUCH DAMAGE.
28*699cd480SApple OSS Distributions  */
29*699cd480SApple OSS Distributions #include <sys/param.h>
30*699cd480SApple OSS Distributions #include <sys/systm.h>
31*699cd480SApple OSS Distributions 
32*699cd480SApple OSS Distributions #include <netinet/in.h>
33*699cd480SApple OSS Distributions 
34*699cd480SApple OSS Distributions char *
inet_ntoa(struct in_addr ina)35*699cd480SApple OSS Distributions inet_ntoa(struct in_addr ina)
36*699cd480SApple OSS Distributions {
37*699cd480SApple OSS Distributions 	static char buf[4 * sizeof "123"];
38*699cd480SApple OSS Distributions 	unsigned char *ucp = (unsigned char *)&ina;
39*699cd480SApple OSS Distributions 
40*699cd480SApple OSS Distributions 	snprintf(buf, sizeof(buf), "%d.%d.%d.%d",
41*699cd480SApple OSS Distributions 	    ucp[0] & 0xff,
42*699cd480SApple OSS Distributions 	    ucp[1] & 0xff,
43*699cd480SApple OSS Distributions 	    ucp[2] & 0xff,
44*699cd480SApple OSS Distributions 	    ucp[3] & 0xff);
45*699cd480SApple OSS Distributions 	return buf;
46*699cd480SApple OSS Distributions }
47*699cd480SApple OSS Distributions 
48*699cd480SApple OSS Distributions char *
inet_ntoa_r(struct in_addr ina,char * buf,size_t buflen)49*699cd480SApple OSS Distributions inet_ntoa_r(struct in_addr ina, char *buf, size_t buflen)
50*699cd480SApple OSS Distributions {
51*699cd480SApple OSS Distributions 	unsigned char *ucp = (unsigned char *)&ina;
52*699cd480SApple OSS Distributions 
53*699cd480SApple OSS Distributions 	snprintf(buf, buflen, "%d.%d.%d.%d",
54*699cd480SApple OSS Distributions 	    ucp[0] & 0xff,
55*699cd480SApple OSS Distributions 	    ucp[1] & 0xff,
56*699cd480SApple OSS Distributions 	    ucp[2] & 0xff,
57*699cd480SApple OSS Distributions 	    ucp[3] & 0xff);
58*699cd480SApple OSS Distributions 	return buf;
59*699cd480SApple OSS Distributions }
60