--- /dev/null
+/* $OpenBSD: inet_addr.c,v 1.6 1999/05/03 22:31:14 yanick 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--
+ */
+
+#include "config.h"
+
+#if !defined(HAVE_INET_ATON)
+
+#if defined(LIBC_SCCS) && !defined(lint)
+#if 0
+static char sccsid[] = "@(#)inet_addr.c 8.1 (Berkeley) 6/17/93";
+static char rcsid[] = "$From: inet_addr.c,v 8.5 1996/08/05 08:31:35 vixie Exp $";
+#else
+static char rcsid[] = "$OpenBSD: inet_addr.c,v 1.6 1999/05/03 22:31:14 yanick Exp $";
+#endif
+#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>
+
+#if 0
+/*
+ * Ascii internet address interpretation routine.
+ * The value returned is in network order.
+ */
+in_addr_t
+inet_addr(cp)
+ register const char *cp;
+{
+ struct in_addr val;
+
+ if (inet_aton(cp, &val))
+ return (val.s_addr);
+ return (INADDR_NONE);
+}
+#endif
+
+/*
+ * 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)
+{
+ register in_addr_t val;
+ register int base, n;
+ register char c;
+ unsigned int parts[4];
+ register unsigned int *pp = parts;
+
+ 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;
+ if (c == '0') {
+ c = *++cp;
+ if (c == 'x' || c == 'X')
+ base = 16, c = *++cp;
+ else
+ base = 8;
+ }
+ for (;;) {
+ if (isascii(c) && isdigit(c)) {
+ val = (val * base) + (c - '0');
+ c = *++cp;
+ } else if (base == 16 && isascii(c) && isxdigit(c)) {
+ val = (val << 4) |
+ (c + 10 - (islower(c) ? 'a' : 'A'));
+ c = *++cp;
+ } 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)
+ return (0);
+ *pp++ = val;
+ c = *++cp;
+ } else
+ break;
+ }
+ /*
+ * Check for trailing characters.
+ */
+ if (c != '\0' && (!isascii(c) || !isspace(c)))
+ return (0);
+ /*
+ * Concoct the address according to
+ * the number of parts specified.
+ */
+ n = pp - parts + 1;
+ switch (n) {
+
+ case 0:
+ return (0); /* initial nondigit */
+
+ case 1: /* a -- 32 bits */
+ break;
+
+ case 2: /* 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 > 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 > 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)
+ addr->s_addr = htonl(val);
+ return (1);
+}
+
+#endif /* !defined(HAVE_INET_ATON) */
andersk / openssh.git / commitdiff
