]> granicus.if.org Git - postgresql/commitdiff
there, that's fixed
authorMarc G. Fournier <scrappy@hub.org>
Wed, 19 Mar 1997 02:13:27 +0000 (02:13 +0000)
committerMarc G. Fournier <scrappy@hub.org>
Wed, 19 Mar 1997 02:13:27 +0000 (02:13 +0000)
src/backend/port/inet_aton.c [new file with mode: 0644]
src/backend/port/inet_aton.h [new file with mode: 0644]

diff --git a/src/backend/port/inet_aton.c b/src/backend/port/inet_aton.c
new file mode 100644 (file)
index 0000000..37c11b6
--- /dev/null
@@ -0,0 +1,142 @@
+/*
+ *
+ *  This inet_aton() function was taken from the GNU C library and
+ *  incorporated into Postgres for those systems which do not have this
+ *  routine in their standard C libraries.
+ *
+ *  The function was been extracted whole from the file inet_aton.c in
+ *  Release 5.3.12 of the Linux C library, which is derived from the
+ *  GNU C library, by Bryan Henderson in October 1996.  The copyright
+ *  notice from that file is below.
+ */
+
+/*
+ * 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.  */
+
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <ctype.h>
+#include "inet_aton.h"
+
+/*
+ * 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 u_long val;
+       register int base, n;
+       register char c;
+       u_int parts[4];
+       register u_int *pp = parts;
+
+       for (;;) {
+               /*
+                * Collect number up to ``.''.
+                * Values are specified as for C:
+                * 0x=hex, 0=octal, other=decimal.
+                */
+               val = 0; base = 10;
+               if (*cp == '0') {
+                       if (*++cp == 'x' || *cp == 'X')
+                               base = 16, cp++;
+                       else
+                               base = 8;
+               }
+               while ((c = *cp) != '\0') {
+                       if (isascii(c) && isdigit(c)) {
+                               val = (val * base) + (c - '0');
+                               cp++;
+                               continue;
+                       }
+                       if (base == 16 && isascii(c) && isxdigit(c)) {
+                               val = (val << 4) + 
+                                       (c + 10 - (islower(c) ? 'a' : 'A'));
+                               cp++;
+                               continue;
+                       }
+                       break;
+               }
+               if (*cp == '.') {
+                       /*
+                        * 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 > 0xff)
+                               return (0);
+                       *pp++ = val, cp++;
+               } else
+                       break;
+       }
+       /*
+        * Check for trailing characters.
+        */
+       if (*cp && (!isascii(*cp) || !isspace(*cp)))
+               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 > 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);
+}
diff --git a/src/backend/port/inet_aton.h b/src/backend/port/inet_aton.h
new file mode 100644 (file)
index 0000000..6909bd2
--- /dev/null
@@ -0,0 +1,2 @@
+int
+inet_aton(const char *cp, struct in_addr *addr);