--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nspr/pr/src/misc/praton.c	Mon Jul 28 10:47:06 2014 +0200
@@ -0,0 +1,198 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/*******************************************************************************
+ * The following function pr_inet_aton is based on the BSD function inet_aton
+ * with some modifications. The license and copyright notices applying to this
+ * function appear below. Modifications are also according to the license below.
+ ******************************************************************************/
+
+#include "prnetdb.h"
+
+/*
+ * 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.
+ */
+
+#define XX 127
+static const unsigned char index_hex[256] = {
+    XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
+    XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
+    XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
+     0, 1, 2, 3,  4, 5, 6, 7,  8, 9,XX,XX, XX,XX,XX,XX,
+    XX,10,11,12, 13,14,15,XX, XX,XX,XX,XX, XX,XX,XX,XX,
+    XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
+    XX,10,11,12, 13,14,15,XX, XX,XX,XX,XX, XX,XX,XX,XX,
+    XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
+    XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
+    XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
+    XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
+    XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
+    XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
+    XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
+    XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
+    XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX,
+};
+
+static PRBool _isdigit(char c) { return c >= '0' && c <= '9'; }
+static PRBool _isxdigit(char c) { return index_hex[(unsigned char) c] != XX; }
+static PRBool _isspace(char c) { return c == ' ' || (c >= '\t' && c <= '\r'); }
+#undef XX
+
+int
+pr_inet_aton(const char *cp, PRUint32 *addr)
+{
+    PRUint32 val;
+    int base, n;
+    char c;
+    PRUint8 parts[4];
+    PRUint8 *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(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 (_isdigit(c)) {
+                if (base == 8 && (c == '8' || c == '9'))
+                    return (0);
+                val = (val * base) + (c - '0');
+                c = *++cp;
+                digit = 1;
+            } else if (base == 16 && _isxdigit(c)) {
+                val = (val << 4) + index_hex[(unsigned char) c];
+                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' && !_isspace(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;
+    }
+    *addr = PR_htonl(val);
+    return (1);
+}
+