--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/genericopenlibs/cstdlib/LPOSIX/ARPA.C Fri Jun 04 16:20:51 2010 +0100
@@ -0,0 +1,261 @@
+/* ARPA.C
+ *
+ * Portions Copyright (c) 1997-1999 Nokia Corporation and/or its subsidiary(-ies).
+ * All rights reserved.
+ */
+
+/*
+ * Implementation of the ARPA/INET.H functions, based on FreeBSD.
+ */
+
+/*
+ * 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.
+ * 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 <stdio_r.h>
+#include <netdb_r.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <libc/netinet/in.h>
+#include <libc/arpa/inet.h>
+
+
+/**
+Ascii internet address interpretation routine.
+@return The value returned is in network order.
+@param cp ascii representation of an Internet address
+*/
+EXPORT_C unsigned long 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.
+This replaces inet_addr, the return value from which
+cannot distinguish between failure and a local broadcast address.
+@return 1 if the address is valid, 0 if not.
+@param cp ascii representation of an Internet address
+@param addr internet address
+*/
+EXPORT_C int inet_aton(const char* cp, struct in_addr* addr)
+{
+ unsigned long val;
+ int base, n;
+ char c;
+ unsigned int parts[4];
+ 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);
+ if (val > 0xff) /* Check 8-bit a, b, c */
+ 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)
+ 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)
+ addr->s_addr = htonl(val);
+ return (1);
+}
+
+/*
+ * Convert network-format internet address
+ * to base 256 d.d.d.d representation.
+ */
+EXPORT_C char* _inet_ntoa_r(struct _reent* rp, struct in_addr in)
+{
+ unsigned char* p = (unsigned char *)∈
+ _sprintf_r(rp, rp->_tmpnam, "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
+ return rp->_tmpnam;
+}
+
+#ifndef _REENT_ONLY
+
+EXPORT_C char* inet_ntoa(struct in_addr in)
+{
+ return _inet_ntoa_r(_REENT,in);
+}
+
+#endif /* _REENT_ONLY */
+
+/**
+Return the local network address portion of an
+internet address; handles class a/b/c network
+number formats.
+@return the local network address portion of an
+internet address
+@param in
+*/
+EXPORT_C unsigned long inet_lnaof(struct in_addr in)
+{
+ register unsigned long i = ntohl(in.s_addr);
+
+ if (IN_CLASSA(i))
+ return ((i)&IN_CLASSA_HOST);
+ else if (IN_CLASSB(i))
+ return ((i)&IN_CLASSB_HOST);
+ else
+ return ((i)&IN_CLASSC_HOST);
+}
+
+/**
+@return the network number from an internet
+address; handles class a/b/c network #'s.
+@param in
+*/
+EXPORT_C unsigned long inet_netof(struct in_addr in)
+{
+ unsigned long i = ntohl(in.s_addr);
+
+ if (IN_CLASSA(i))
+ return (((i)&IN_CLASSA_NET) >> IN_CLASSA_NSHIFT);
+ else if (IN_CLASSB(i))
+ return (((i)&IN_CLASSB_NET) >> IN_CLASSB_NSHIFT);
+ else
+ return (((i)&IN_CLASSC_NET) >> IN_CLASSC_NSHIFT);
+}
+
+/** Formulate an Internet address from network + host.
+*/
+EXPORT_C struct in_addr inet_makeaddr(unsigned long net, unsigned long host)
+{
+ unsigned long addr;
+
+ if (net < IN_CLASSA_MAX)
+ addr = (net << IN_CLASSA_NSHIFT) | (host & IN_CLASSA_HOST);
+ else if (net < IN_CLASSB_MAX)
+ addr = (net << IN_CLASSB_NSHIFT) | (host & IN_CLASSB_HOST);
+ else if (net < IN_CLASSC_MAX)
+ addr = (net << IN_CLASSC_NSHIFT) | (host & IN_CLASSC_HOST);
+ else
+ addr = net | host;
+ addr = htonl(addr);
+ return (*(struct in_addr *)&addr);
+}
+