Loading...
net/FreeBSD/inet_addr.c /dev/null Libc-583
--- /dev/null
+++ Libc/Libc-583/net/FreeBSD/inet_addr.c
@@ -0,0 +1,215 @@
+/*
+ * 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.
+ * 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.
+ */
+
+/*
+ * 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.
+ */
+
+#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 $";
+#endif /* LIBC_SCCS and not lint */
+#include <sys/cdefs.h>
+__FBSDID("$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>
+#include <sys/param.h>
+
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <ctype.h>
+
+#include "port_after.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) {
+	struct in_addr val;
+
+	if (inet_aton(cp, &val))
+		return (val.s_addr);
+	return (INADDR_NONE);
+}
+
+/*%
+ * 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.
+		 */
+		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 ;
+			}
+		}
+		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)
+			return (0);
+		val |= parts[0] << 24;
+		break;
+
+	case 3:				/*%< a.b.c -- 8.8.16 bits */
+		if (val > 0xffffU)
+			return (0);
+		val |= (parts[0] << 24) | (parts[1] << 16);
+		break;
+
+	case 4:				/*%< a.b.c.d -- 8.8.8.8 bits */
+		if (val > 0xffU)
+			return (0);
+		val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8);
+		break;
+	}
+	if (addr != NULL)
+		addr->s_addr = htonl(val);
+	return (1);
+}
+
+/*
+ * Weak aliases for applications that use certain private entry points,
+ * and fail to include <arpa/inet.h>.
+ */
+#undef inet_addr
+__weak_reference(__inet_addr, inet_addr);
+#undef inet_aton
+__weak_reference(__inet_aton, inet_aton);
+
+/*! \file */