[PATCH 105/114] Add implementation of inet_aton function for Phoenix.

[Jakub Sejdak <jakub dot sejdak at phoesys dot com>]

From: Kuba Sejdak <jakub.sejdak@phoesys.com>

---
 newlib/libc/sys/phoenix/net/inet_aton.c | 166 ++++++++++++++++++++++++++++++++
 1 file changed, 166 insertions(+)
 create mode 100644 newlib/libc/sys/phoenix/net/inet_aton.c

diff --git a/newlib/libc/sys/phoenix/net/inet_aton.c b/newlib/libc/sys/phoenix/net/inet_aton.c
new file mode 100644
index 0000000..f595e87
--- /dev/null
+++ b/newlib/libc/sys/phoenix/net/inet_aton.c
@@ -0,0 +1,166 @@
+/*	$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.
+ * 
+ * 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.
+ * -
+ * --Copyright--
+ */
+
+/* Copied from Linux, modified for Phoenix-RTOS. */
+
+#include <arpa/inet.h>
+#include <ctype.h>
+#include <errno.h>
+#include <stdlib.h>
+
+int inet_aton(const char *cp, struct in_addr *inp)
+{
+	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 (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 */
+		}
+	}
+
+	/*
+	 * Concoct the address according to
+	 * the number of parts specified.
+	 */
+
+	switch (n) {
+	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 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 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 (inp != NULL)
+		inp->s_addr = htonl(val);
+
+	return 1;
+}
-- 
2.5.0