| Vishal Bhoj | 82c8071 | 2015-12-15 21:13:33 +0530 | [diff] [blame^] | 1 | /*
|
| 2 | * Copyright (c) 1996 by Internet Software Consortium.
|
| 3 | *
|
| 4 | * Permission to use, copy, modify, and distribute this software for any
|
| 5 | * purpose with or without fee is hereby granted, provided that the above
|
| 6 | * copyright notice and this permission notice appear in all copies.
|
| 7 | *
|
| 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
|
| 9 | * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
|
| 10 | * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
|
| 11 | * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
|
| 12 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
|
| 13 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
|
| 14 | * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
|
| 15 | * SOFTWARE.
|
| 16 | */
|
| 17 |
|
| 18 | /*
|
| 19 | * Portions copyright (c) 1999, 2000
|
| 20 | * Intel Corporation.
|
| 21 | * All rights reserved.
|
| 22 | *
|
| 23 | * Redistribution and use in source and binary forms, with or without
|
| 24 | * modification, are permitted provided that the following conditions
|
| 25 | * are met:
|
| 26 | *
|
| 27 | * 1. Redistributions of source code must retain the above copyright
|
| 28 | * notice, this list of conditions and the following disclaimer.
|
| 29 | *
|
| 30 | * 2. Redistributions in binary form must reproduce the above copyright
|
| 31 | * notice, this list of conditions and the following disclaimer in the
|
| 32 | * documentation and/or other materials provided with the distribution.
|
| 33 | *
|
| 34 | * 3. All advertising materials mentioning features or use of this software
|
| 35 | * must display the following acknowledgement:
|
| 36 | *
|
| 37 | * This product includes software developed by Intel Corporation and
|
| 38 | * its contributors.
|
| 39 | *
|
| 40 | * 4. Neither the name of Intel Corporation or its contributors may be
|
| 41 | * used to endorse or promote products derived from this software
|
| 42 | * without specific prior written permission.
|
| 43 | *
|
| 44 | * THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION AND CONTRIBUTORS ``AS IS''
|
| 45 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
| 46 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
| 47 | * ARE DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION OR CONTRIBUTORS BE
|
| 48 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
| 49 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
| 50 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
| 51 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
| 52 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
| 53 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
|
| 54 | * THE POSSIBILITY OF SUCH DAMAGE.
|
| 55 | *
|
| 56 | */
|
| 57 |
|
| 58 | #if defined(LIBC_SCCS) && !defined(lint)
|
| 59 | static const char orig_rcsid[] = "From Id: inet_neta.c,v 8.2 1996/08/08 06:54:44 vixie Exp";
|
| 60 | static const char rcsid[] = "$Id: inet_neta.c,v 1.1.1.1 2003/11/19 01:51:29 kyu3 Exp $";
|
| 61 | #endif
|
| 62 |
|
| 63 | #include <sys/types.h>
|
| 64 | #include <sys/socket.h>
|
| 65 | #include <netinet/in.h>
|
| 66 | #include <arpa/inet.h>
|
| 67 |
|
| 68 | #include <errno.h>
|
| 69 | #include <stdio.h>
|
| 70 | #include <string.h>
|
| 71 |
|
| 72 | #ifdef SPRINTF_CHAR
|
| 73 | # define SPRINTF(x) strlen(sprintf/**/x)
|
| 74 | #else
|
| 75 | # define SPRINTF(x) ((size_t)sprintf x)
|
| 76 | #endif
|
| 77 |
|
| 78 | /*
|
| 79 | * char *
|
| 80 | * inet_neta(src, dst, size)
|
| 81 | * format a u_long network number into presentation format.
|
| 82 | * return:
|
| 83 | * pointer to dst, or NULL if an error occurred (check errno).
|
| 84 | * note:
|
| 85 | * format of ``src'' is as for inet_network().
|
| 86 | * author:
|
| 87 | * Paul Vixie (ISC), July 1996
|
| 88 | */
|
| 89 | char *
|
| 90 | inet_neta(
|
| 91 | u_long src,
|
| 92 | char *dst,
|
| 93 | size_t size
|
| 94 | )
|
| 95 | {
|
| 96 | char *odst = dst;
|
| 97 | char *tp;
|
| 98 |
|
| 99 | while (src & 0xffffffff) {
|
| 100 | u_char b = (u_char)((src & 0xff000000) >> 24);
|
| 101 |
|
| 102 | src <<= 8;
|
| 103 | if (b) {
|
| 104 | if (size < sizeof "255.")
|
| 105 | goto emsgsize;
|
| 106 | tp = dst;
|
| 107 | dst += SPRINTF((dst, "%u", b));
|
| 108 | if (src != 0L) {
|
| 109 | *dst++ = '.';
|
| 110 | *dst = '\0';
|
| 111 | }
|
| 112 | size -= (size_t)(dst - tp);
|
| 113 | }
|
| 114 | }
|
| 115 | if (dst == odst) {
|
| 116 | if (size < sizeof "0.0.0.0")
|
| 117 | goto emsgsize;
|
| 118 | strcpy(dst, "0.0.0.0");
|
| 119 | }
|
| 120 | return (odst);
|
| 121 |
|
| 122 | emsgsize:
|
| 123 | errno = EMSGSIZE;
|
| 124 | return (NULL);
|
| 125 | }
|