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--- Libc/Libc-583/net/FreeBSD/inet_addr.c
+++ Libc/Libc-320/net/FreeBSD/inet_addr.c
@@ -1,4 +1,8 @@
+/* $KAME: inet_addr.c,v 1.5 2001/08/20 02:32:40 itojun Exp $ */
+
/*
+ * ++Copyright++ 1983, 1990, 1993
+ * -
* Copyright (c) 1983, 1990, 1993
* The Regents of the University of California. All rights reserved.
*
@@ -10,6 +14,10 @@
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
@@ -25,9 +33,7 @@
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
- */
-
-/*
+ * -
* Portions Copyright (c) 1993 by Digital Equipment Corporation.
*
* Permission to use, copy, modify, and distribute this software for any
@@ -45,50 +51,34 @@
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
- */
-
-/*
- * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
- * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
- * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ * -
+ * --Copyright--
*/
#if defined(LIBC_SCCS) && !defined(lint)
-static const char sccsid[] = "@(#)inet_addr.c 8.1 (Berkeley) 6/17/93";
-static const char rcsid[] = "$Id: inet_addr.c,v 1.4.18.1 2005/04/27 05:00:52 sra Exp $";
+static char sccsid[] = "@(#)inet_addr.c 8.1 (Berkeley) 6/17/93";
#endif /* LIBC_SCCS and not lint */
#include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/inet/inet_addr.c,v 1.4 2007/06/03 17:20:26 ume Exp $");
-
-#include "port_before.h"
-
-#include <sys/types.h>
+__FBSDID("$FreeBSD: src/lib/libc/net/inet_addr.c,v 1.16 2002/04/19 04:46:20 suz Exp $");
+
#include <sys/param.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <ctype.h>
-
-#include "port_after.h"
-
-/*%
- * Ascii internet address interpretation routine.
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+
+/*
+ * ASCII internet address interpretation routine.
* The value returned is in network order.
*/
in_addr_t /* XXX should be struct in_addr :( */
-inet_addr(const char *cp) {
+inet_addr(cp)
+ const char *cp;
+{
struct in_addr val;
if (inet_aton(cp, &val))
@@ -96,108 +86,105 @@
return (INADDR_NONE);
}
-/*%
- * Check whether "cp" is a valid ascii representation
+/*
+ * Check whether "cp" is a valid ASCII representation
* of an Internet address and convert to a binary address.
* Returns 1 if the address is valid, 0 if not.
* This replaces inet_addr, the return value from which
* cannot distinguish between failure and a local broadcast address.
*/
int
-inet_aton(const char *cp, struct in_addr *addr) {
- u_long val;
- int base, n;
- char c;
- u_int8_t parts[4];
- u_int8_t *pp = parts;
- int digit;
-
- c = *cp;
- for (;;) {
- /*
- * Collect number up to ``.''.
- * Values are specified as for C:
- * 0x=hex, 0=octal, isdigit=decimal.
+inet_aton(cp, addr)
+ const char *cp;
+ struct in_addr *addr;
+{
+ u_long parts[4];
+ in_addr_t val;
+ char *c;
+ char *endptr;
+ int gotend, n;
+
+ c = (char *)cp;
+ n = 0;
+ /*
+ * Run through the string, grabbing numbers until
+ * the end of the string, or some error
+ */
+ gotend = 0;
+ while (!gotend) {
+ errno = 0;
+ val = strtoul(c, &endptr, 0);
+
+ if (errno == ERANGE) /* Fail completely if it overflowed. */
+ return (0);
+
+ /*
+ * If the whole string is invalid, endptr will equal
+ * c.. this way we can make sure someone hasn't
+ * gone '.12' or something which would get past
+ * the next check.
*/
- if (!isdigit((unsigned char)c))
- return (0);
- val = 0; base = 10; digit = 0;
- if (c == '0') {
- c = *++cp;
- if (c == 'x' || c == 'X')
- base = 16, c = *++cp;
- else {
- base = 8;
- digit = 1 ;
- }
+ if (endptr == c)
+ return (0);
+ parts[n] = val;
+ c = endptr;
+
+ /* Check the next character past the previous number's end */
+ switch (*c) {
+ case '.' :
+ /* Make sure we only do 3 dots .. */
+ if (n == 3) /* Whoops. Quit. */
+ return (0);
+ n++;
+ c++;
+ break;
+
+ case '\0':
+ gotend = 1;
+ break;
+
+ default:
+ if (isspace((unsigned char)*c)) {
+ gotend = 1;
+ break;
+ } else
+ return (0); /* Invalid character, so fail */
}
- for (;;) {
- if (isascii(c) && isdigit((unsigned char)c)) {
- if (base == 8 && (c == '8' || c == '9'))
- return (0);
- val = (val * base) + (c - '0');
- c = *++cp;
- digit = 1;
- } else if (base == 16 && isascii(c) &&
- isxdigit((unsigned char)c)) {
- val = (val << 4) |
- (c + 10 - (islower((unsigned char)c) ? 'a' : 'A'));
- c = *++cp;
- digit = 1;
- } else
- break;
- }
- if (c == '.') {
- /*
- * Internet format:
- * a.b.c.d
- * a.b.c (with c treated as 16 bits)
- * a.b (with b treated as 24 bits)
- */
- if (pp >= parts + 3 || val > 0xffU)
- return (0);
- *pp++ = val;
- c = *++cp;
- } else
- break;
+
}
- /*
- * Check for trailing characters.
- */
- if (c != '\0' && (!isascii(c) || !isspace((unsigned char)c)))
- return (0);
- /*
- * Did we get a valid digit?
- */
- if (!digit)
- return (0);
+
/*
* Concoct the address according to
* the number of parts specified.
*/
- n = pp - parts + 1;
+
switch (n) {
- case 1: /*%< a -- 32 bits */
- break;
-
- case 2: /*%< a.b -- 8.24 bits */
- if (val > 0xffffffU)
+ case 0: /* a -- 32 bits */
+ /*
+ * Nothing is necessary here. Overflow checking was
+ * already done in strtoul().
+ */
+ break;
+ case 1: /* a.b -- 8.24 bits */
+ if (val > 0xffffff || parts[0] > 0xff)
return (0);
val |= parts[0] << 24;
break;
- case 3: /*%< a.b.c -- 8.8.16 bits */
- if (val > 0xffffU)
+ case 2: /* a.b.c -- 8.8.16 bits */
+ if (val > 0xffff || parts[0] > 0xff || parts[1] > 0xff)
return (0);
val |= (parts[0] << 24) | (parts[1] << 16);
break;
- case 4: /*%< a.b.c.d -- 8.8.8.8 bits */
- if (val > 0xffU)
+ case 3: /* a.b.c.d -- 8.8.8.8 bits */
+ if (val > 0xff || parts[0] > 0xff || parts[1] > 0xff ||
+ parts[2] > 0xff)
return (0);
val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8);
break;
}
+
if (addr != NULL)
addr->s_addr = htonl(val);
return (1);
@@ -211,5 +198,3 @@
__weak_reference(__inet_addr, inet_addr);
#undef inet_aton
__weak_reference(__inet_aton, inet_aton);
-
-/*! \file */