source: rtems/cpukit/libnetworking/libc/inet_addr.c @ bab5c5fa

4.104.11
Last change on this file since bab5c5fa was bab5c5fa, checked in by Joel Sherrill <joel.sherrill@…>, on Mar 12, 2010 at 4:26:16 PM

2010-03-12 Joel Sherrill <joel.sherrill@…>

  • ftpd/ftpd.c, httpd/asp.c, httpd/ejparse.c, httpd/emfdb.c, httpd/misc.c, httpd/um.c, httpd/webs.c, httpd/websuemf.c, libfs/src/dosfs/msdos_dir.c, libfs/src/dosfs/msdos_format.c, libfs/src/dosfs/msdos_misc.c, libfs/src/nfsclient/src/nfs.c, libmisc/capture/capture-cli.c, libmisc/monitor/mon-network.c, libmisc/shell/hexdump-odsyntax.c, libmisc/shell/main_ifconfig.c, libmisc/shell/shell.c, libmisc/shell/shell_makeargs.c, libmisc/uuid/parse.c, libnetworking/libc/gethostbydns.c, libnetworking/libc/gethostbyht.c, libnetworking/libc/gethostnamadr.c, libnetworking/libc/getnetnamadr.c, libnetworking/libc/inet_addr.c, libnetworking/libc/inet_network.c, libnetworking/libc/res_debug.c, libnetworking/libc/res_init.c, libnetworking/libc/res_query.c, libnetworking/rtems/rtems_mii_ioctl.c, score/src/objectgetnameasstring.c: Readdress use of ctype methods per recommendation from D.J. Delorie on the newlib mailing list. We should pass an unsigned char into these methods.
  • Property mode set to 100644
File size: 5.3 KB
Line 
1/*
2 * ++Copyright++ 1983, 1990, 1993
3 * -
4 * Copyright (c) 1983, 1990, 1993
5 *    The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *      This product includes software developed by the University of
18 *      California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 * -
35 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
36 *
37 * Permission to use, copy, modify, and distribute this software for any
38 * purpose with or without fee is hereby granted, provided that the above
39 * copyright notice and this permission notice appear in all copies, and that
40 * the name of Digital Equipment Corporation not be used in advertising or
41 * publicity pertaining to distribution of the document or software without
42 * specific, written prior permission.
43 *
44 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
45 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
46 * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
47 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
48 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
49 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
50 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
51 * SOFTWARE.
52 * -
53 * --Copyright--
54 */
55
56#if HAVE_CONFIG_H
57#include "config.h"
58#endif
59
60#include <sys/param.h>
61#include <netinet/in.h>
62#include <arpa/inet.h>
63#include <ctype.h>
64
65/*
66 * ASCII internet address interpretation routine.
67 * The value returned is in network order.
68 */
69in_addr_t
70inet_addr(
71        const char *cp)
72{
73        struct in_addr val;
74
75        if (inet_aton(cp, &val))
76                return (val.s_addr);
77        return (INADDR_NONE);
78}
79
80/*
81 * Check whether "cp" is a valid ASCII representation
82 * of an Internet address and convert to a binary address.
83 * Returns 1 if the address is valid, 0 if not.
84 * This replaces inet_addr, the return value from which
85 * cannot distinguish between failure and a local broadcast address.
86 */
87int
88inet_aton(
89        const char *cp,
90        struct in_addr *addr)
91{
92        in_addr_t val;
93        register int base, n;
94        register char c;
95        uint32_t parts[4];
96        register uint32_t *pp = parts;
97
98        c = *cp;
99        for (;;) {
100                /*
101                 * Collect number up to ``.''.
102                 * Values are specified as for C:
103                 * 0x=hex, 0=octal, isdigit=decimal.
104                 */
105                if (!isdigit((unsigned char)c))
106                        return (0);
107                val = 0; base = 10;
108                if (c == '0') {
109                        c = *++cp;
110                        if (c == 'x' || c == 'X')
111                                base = 16, c = *++cp;
112                        else
113                                base = 8;
114                }
115                for (;;) {
116                        if (isascii((unsigned char)c) && isdigit((unsigned char)c)) {
117                                val = (val * base) + (c - '0');
118                                c = *++cp;
119                        } else if (base == 16 && isascii((unsigned char)c) && isxdigit((unsigned char)c)) {
120                                val = (val << 4) |
121                                        (c + 10 - (islower((unsigned char)c) ? 'a' : 'A'));
122                                c = *++cp;
123                        } else
124                                break;
125                }
126                if (c == '.') {
127                        /*
128                         * Internet format:
129                         *      a.b.c.d
130                         *      a.b.c   (with c treated as 16 bits)
131                         *      a.b     (with b treated as 24 bits)
132                         */
133                        if (pp >= parts + 3)
134                                return (0);
135                        *pp++ = val;
136                        c = *++cp;
137                } else
138                        break;
139        }
140        /*
141         * Check for trailing characters.
142         */
143        if (c != '\0' && (!isascii((unsigned char)c) || !isspace((unsigned char)c)))
144                return (0);
145        /*
146         * Concoct the address according to
147         * the number of parts specified.
148         */
149        n = pp - parts + 1;
150        switch (n) {
151
152        case 0:
153                return (0);             /* initial nondigit */
154
155        case 1:                         /* a -- 32 bits */
156                break;
157
158        case 2:                         /* a.b -- 8.24 bits */
159                if (val > 0xffffff)
160                        return (0);
161                val |= parts[0] << 24;
162                break;
163
164        case 3:                         /* a.b.c -- 8.8.16 bits */
165                if (val > 0xffff)
166                        return (0);
167                val |= (parts[0] << 24) | (parts[1] << 16);
168                break;
169
170        case 4:                         /* a.b.c.d -- 8.8.8.8 bits */
171                if (val > 0xff)
172                        return (0);
173                val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8);
174                break;
175        }
176        if (addr != NULL)
177                addr->s_addr = htonl(val);
178        return (1);
179}
Note: See TracBrowser for help on using the repository browser.