Libc-320.tar.gz

[apple/libc.git] / net / FreeBSD / inet_network.c

diff --git a/net/FreeBSD/inet_network.c b/net/FreeBSD/inet_network.c
new file mode 100644 (file)
index 0000000..92ff831
--- /dev/null
+++ b/net/FreeBSD/inet_network.c
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 1983, 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)inet_network.c     8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/lib/libc/net/inet_network.c,v 1.9 2002/03/22 21:52:29 obrien Exp $");
+
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <ctype.h>
+
+/*
+ * Internet network address interpretation routine.
+ * The library routines call this routine to interpret
+ * network numbers.
+ */
+in_addr_t
+inet_network(cp)
+       const char *cp;
+{
+       in_addr_t val, base, n;
+       char c;
+       in_addr_t parts[4], *pp = parts;
+       int i;
+
+again:
+       val = 0; base = 10;
+       if (*cp == '0')
+               base = 8, cp++;
+       if (*cp == 'x' || *cp == 'X')
+               base = 16, cp++;
+       while ((c = *cp) != 0) {
+               if (isdigit((unsigned char)c)) {
+                       val = (val * base) + (c - '0');
+                       cp++;
+                       continue;
+               }
+               if (base == 16 && isxdigit((unsigned char)c)) {
+                       val = (val << 4) + (c + 10 - (islower((unsigned char)c) ? 'a' : 'A'));
+                       cp++;
+                       continue;
+               }
+               break;
+       }
+       if (*cp == '.') {
+               if (pp >= parts + 3)
+                       return (INADDR_NONE);
+               *pp++ = val, cp++;
+               goto again;
+       }
+       if (*cp && !isspace((unsigned char)*cp))
+               return (INADDR_NONE);
+       *pp++ = val;
+       n = pp - parts;
+       for (val = 0, i = 0; i < n; i++) {
+               val <<= 8;
+               val |= parts[i] & 0xff;
+       }
+       return (val);
+}
+
+/*
+ * Weak aliases for applications that use certain private entry points,
+ * and fail to include <arpa/inet.h>.
+ */
+#undef inet_network
+__weak_reference(__inet_network, inet_network);