Add isc_inet_aton() and a check to use system inet_aton()

configure

 #! /bin/sh
 
-# From configure.in Revision: 1.9 
+# From configure.in Revision: 1.10 
 
 # Guess values for system-dependent variables and create Makefiles.
 # Generated automatically using autoconf version 2.12 
@@ -1421,11 +1421,66 @@ ISC_EXTRA_OBJS="$ISC_EXTRA_OBJS inet_ntop.o"
 EOF
 
 
+fi
+
+echo $ac_n "checking for inet_aton""... $ac_c" 1>&6
+echo "configure:1428: checking for inet_aton" >&5
+if eval "test \"`echo '$''{'ac_cv_func_inet_aton'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1433 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char inet_aton(); below.  */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char inet_aton();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_inet_aton) || defined (__stub___inet_aton)
+choke me
+#else
+inet_aton();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:1456: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_func_inet_aton=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_func_inet_aton=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'inet_aton`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+  :
+else
+  echo "$ac_t""no" 1>&6
+ISC_EXTRA_OBJS="$ISC_EXTRA_OBJS inet_aton.o"
+	       
+	       cat >> confdefs.h <<\EOF
+#define NEED_INET_ATON 1
+EOF
+
+
 fi
 
 
 echo $ac_n "checking whether ${MAKE-make} sets \${MAKE}""... $ac_c" 1>&6
-echo "configure:1429: checking whether ${MAKE-make} sets \${MAKE}" >&5
+echo "configure:1484: checking whether ${MAKE-make} sets \${MAKE}" >&5
 set dummy ${MAKE-make}; ac_make=`echo "$2" | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_prog_make_${ac_make}_set'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1454,7 +1509,7 @@ fi
 # Extract the first word of "ranlib", so it can be a program name with args.
 set dummy ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1458: checking for $ac_word" >&5
+echo "configure:1513: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1491,7 +1546,7 @@ fi
 # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
 # ./install, which can be erroneously created by make from ./install.sh.
 echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6
-echo "configure:1495: checking for a BSD compatible install" >&5
+echo "configure:1550: checking for a BSD compatible install" >&5
 if test -z "$INSTALL"; then
 if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6

configure.in

 
-AC_REVISION($Revision: 1.10 $)
+AC_REVISION($Revision: 1.11 $)
 
 AC_INIT(lib/dns/name.c)
 AC_CONFIG_HEADER(config.h)
@@ -29,6 +29,11 @@ AC_CHECK_FUNC(inet_ntop, ,
 	       AC_SUBST(ISC_EXTRA_OBJS)
 	       AC_DEFINE(NEED_INET_NTOP)]
 )
+AC_CHECK_FUNC(inet_aton, ,
+	      [ISC_EXTRA_OBJS="$ISC_EXTRA_OBJS inet_aton.o"
+	       AC_SUBST(ISC_EXTRA_OBJS)
+	       AC_DEFINE(NEED_INET_ATON)]
+)
 
 AC_PROG_MAKE_SET
 AC_PROG_RANLIB

lib/dns/rdata/in_1/a_1.c

@@ -15,7 +15,7 @@
  * SOFTWARE.
  */
 
- /* $Id: a_1.c,v 1.8 1999/01/22 05:02:49 marka Exp $ */
+ /* $Id: a_1.c,v 1.9 1999/01/30 04:27:47 explorer Exp $ */
 
 #ifndef RDATA_IN_1_A_1_H
 #define RDATA_IN_1_A_1_H
@@ -46,7 +46,7 @@ fromtext_in_a(dns_rdataclass_t class, dns_rdatatype_t type,
 
 	RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
 
-	if (inet_aton(token.value.as_pointer , &addr) != 1)
+	if (isc_inet_aton(token.value.as_pointer, &addr) != 1)
 		return (DNS_R_UNEXPECTED);
 	isc_buffer_available(target, &region);
 	if (region.length < 4)

lib/dns/rdata/in_1/a_1.h

@@ -15,7 +15,7 @@
  * SOFTWARE.
  */
 
- /* $Id: a_1.h,v 1.8 1999/01/22 05:02:49 marka Exp $ */
+ /* $Id: a_1.h,v 1.9 1999/01/30 04:27:47 explorer Exp $ */
 
 #ifndef RDATA_IN_1_A_1_H
 #define RDATA_IN_1_A_1_H
@@ -46,7 +46,7 @@ fromtext_in_a(dns_rdataclass_t class, dns_rdatatype_t type,
 
 	RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
 
-	if (inet_aton(token.value.as_pointer , &addr) != 1)
+	if (isc_inet_aton(token.value.as_pointer, &addr) != 1)
 		return (DNS_R_UNEXPECTED);
 	isc_buffer_available(target, &region);
 	if (region.length < 4)

lib/dns/rdata/in_1/wks_11.c

@@ -15,7 +15,7 @@
  * SOFTWARE.
  */
 
- /* $Id: wks_11.c,v 1.4 1999/01/22 05:02:49 marka Exp $ */
+ /* $Id: wks_11.c,v 1.5 1999/01/30 04:27:47 explorer Exp $ */
 
 #ifndef RDATA_IN_1_WKS_11_H
 #define RDATA_IN_1_WKS_11_H
@@ -59,7 +59,7 @@ fromtext_in_wks(dns_rdataclass_t class, dns_rdatatype_t type,
 	RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
 
 	isc_buffer_available(target, &region);
-	if (inet_aton(token.value.as_pointer , &addr) != 1)
+	if (isc_inet_aton(token.value.as_pointer, &addr) != 1)
 		return (DNS_R_BADDOTTEDQUAD);
 	if (region.length < 4)
 		return (DNS_R_NOSPACE);

lib/dns/rdata/in_1/wks_11.h

@@ -15,7 +15,7 @@
  * SOFTWARE.
  */
 
- /* $Id: wks_11.h,v 1.4 1999/01/22 05:02:49 marka Exp $ */
+ /* $Id: wks_11.h,v 1.5 1999/01/30 04:27:47 explorer Exp $ */
 
 #ifndef RDATA_IN_1_WKS_11_H
 #define RDATA_IN_1_WKS_11_H
@@ -59,7 +59,7 @@ fromtext_in_wks(dns_rdataclass_t class, dns_rdatatype_t type,
 	RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
 
 	isc_buffer_available(target, &region);
-	if (inet_aton(token.value.as_pointer , &addr) != 1)
+	if (isc_inet_aton(token.value.as_pointer, &addr) != 1)
 		return (DNS_R_BADDOTTEDQUAD);
 	if (region.length < 4)
 		return (DNS_R_NOSPACE);

lib/isc/include/isc/inet.h

@@ -33,4 +33,10 @@ char *isc_inet_ntop(int af, const void *src, char *dst, size_t size);
 #define isc_inet_ntop inet_ntop
 #endif
 
+#ifdef NEED_INET_ATON
+int isc_inet_aton(const char *cp, struct in_addr *addr);
+#else
+#define isc_inet_aton inet_aton
+#endif
+
 #endif /* ISC_INET_H */

lib/isc/inet_aton.c

+/*
+ * Copyright (c) 1983, 1990, 1993
+ *    The Regents of the University of California.  All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 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.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * 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
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies, and that
+ * the name of Digital Equipment Corporation not be used in advertising or
+ * publicity pertaining to distribution of the document or software without
+ * specific, written prior permission.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
+ * CORPORATION 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.
+ */
+
+/*
+ * 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)inet_addr.c	8.1 (Berkeley) 6/17/93";
+static char rcsid[] = "$Id: inet_aton.c,v 1.1 1999/01/30 04:27:48 explorer Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/param.h>
+
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <ctype.h>
+
+#include <isc/types.h>
+
+/* 
+ * 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)
+{
+	unsigned long val;
+	int base, n;
+	char c;
+	isc_uint8_t parts[4];
+	isc_uint8_t *pp = parts;
+	int digit;
+
+	c = *cp;
+	for (;;) {
+		/*
+		 * Collect number up to ``.''.
+		 * Values are specified as for C:
+		 * 0x=hex, 0=octal, isdigit=decimal.
+		 */
+		if (!isdigit(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 ;
+			}
+		}
+		for (;;) {
+			if (isascii(c) && isdigit(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(c)) {
+				val = (val << 4) |
+					(c + 10 - (islower(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 > 0xff)
+				return (0);
+			*pp++ = val;
+			c = *++cp;
+		} else
+			break;
+	}
+	/*
+	 * Check for trailing characters.
+	 */
+	if (c != '\0' && (!isascii(c) || !isspace(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 > 0xffffff)
+			return (0);
+		val |= parts[0] << 24;
+		break;
+
+	case 3:				/* a.b.c -- 8.8.16 bits */
+		if (val > 0xffff)
+			return (0);
+		val |= (parts[0] << 24) | (parts[1] << 16);
+		break;
+
+	case 4:				/* a.b.c.d -- 8.8.8.8 bits */
+		if (val > 0xff)
+			return (0);
+		val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8);
+		break;
+	}
+	if (addr != NULL)
+		addr->s_addr = htonl(val);
+
+	return (1);
+}

lib/isc/inet_ntop.c

@@ -16,7 +16,7 @@
  */
 
 #if defined(LIBC_SCCS) && !defined(lint)
-static char rcsid[] = "$Id: inet_ntop.c,v 1.1 1999/01/22 04:35:11 explorer Exp $";
+static char rcsid[] = "$Id: inet_ntop.c,v 1.2 1999/01/30 04:27:48 explorer Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <errno.h>
@@ -40,7 +40,9 @@ static char rcsid[] = "$Id: inet_ntop.c,v 1.1 1999/01/22 04:35:11 explorer Exp $
  */
 
 static const char *isc_inet_ntop4(const u_char *src, char *dst, size_t size);
+#ifdef AF_INET6
 static const char *isc_inet_ntop6(const u_char *src, char *dst, size_t size);
+#endif
 
 /* char *
  * isc_inet_ntop(af, src, dst, size)
@@ -56,8 +58,10 @@ isc_inet_ntop(int af, const void *src, char *dst, size_t size)
 	switch (af) {
 	case AF_INET:
 		return (isc_inet_ntop4(src, dst, size));
+#ifdef AF_INET6
 	case AF_INET6:
 		return (isc_inet_ntop6(src, dst, size));
+#endif
 	default:
 		errno = EAFNOSUPPORT;
 		return (NULL);
@@ -97,6 +101,7 @@ isc_inet_ntop4(const u_char *src, char *dst, size_t size)
  * author:
  *	Paul Vixie, 1996.
  */
+#ifdef AF_INET6
 static const char *
 isc_inet_ntop6(const u_char *src, char *dst, size_t size)
 {
@@ -185,3 +190,4 @@ isc_inet_ntop6(const u_char *src, char *dst, size_t size)
 	strcpy(dst, tmp);
 	return (dst);
 }
+#endif /* AF_INET6 */