From: Bruce Momjian <bruce@momjian.us>
Date: Wed, 21 Oct 1998 16:06:50 +0000 (+0000)
Subject: New CIDR type and fixed INET type, from D'Arcy.
X-Git-Tag: REL6_4_2~169
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=858a3b570ab4e402e7b0b8f383237ad4a5d13c41;p=postgresql

New CIDR type and fixed INET type, from D'Arcy.
---

diff --git a/src/backend/utils/adt/inet.c b/src/backend/utils/adt/inet.c
index 9313245e53..d096c664d3 100644
--- a/src/backend/utils/adt/inet.c
+++ b/src/backend/utils/adt/inet.c
@@ -1,9 +1,9 @@
 /*
- *	PostgreSQL type definitions for the INET type.  This
+ *	PostgreSQL type definitions for the INET type.	This
  *	is for IP V4 CIDR notation, but prepared for V6: just
  *	add the necessary bits where the comments indicate.
  *
- *	$Id: inet.c,v 1.8 1998/10/21 04:25:25 momjian Exp $
+ *	$Id: inet.c,v 1.9 1998/10/21 16:06:45 momjian Exp $
  *	Jon Postel RIP 16 Oct 1998
  */
 
@@ -22,7 +22,7 @@
 #include <utils/builtins.h>
 #include <utils/inet.h>
 
-static int v4bitncmp(unsigned int a1, unsigned int a2, int bits);
+static int	v4bitncmp(unsigned int a1, unsigned int a2, int bits);
 
 /*
  *	Access macros.	Add IPV6 support.
@@ -37,11 +37,14 @@ static int v4bitncmp(unsigned int a1, unsigned int a2, int bits);
 #define ip_bits(inetptr) \
 	(((inet_struct *)VARDATA(inetptr))->bits)
 
+#define ip_type(inetptr) \
+	(((inet_struct *)VARDATA(inetptr))->type)
+
 #define ip_v4addr(inetptr) \
 	(((inet_struct *)VARDATA(inetptr))->addr.ipv4_addr)
 
 /*
- *	IP address reader.
+ *	INET address reader.
  */
 
 inet *
@@ -70,11 +73,12 @@ inet_in(char *src)
 		+ ((char *) &ip_v4addr(dst) - (char *) VARDATA(dst))
 		+ ip_addrsize(dst);
 	ip_bits(dst) = bits;
+	ip_type(dst) = 0;
 	return (dst);
 }
 
 /*
- *	IP address output function.
+ *	INET address output function.
  */
 
 char *
@@ -99,6 +103,8 @@ inet_out(inet *src)
 		elog(ERROR, "unknown address family (%d)", ip_family(src));
 		return (NULL);
 	}
+	if (ip_type(src) == 0 && ip_bits(src) == 32 && (dst = strchr(tmp, '/')) != NULL)
+		*dst = 0;
 	dst = palloc(strlen(tmp) + 1);
 	if (dst == NULL)
 	{
@@ -109,6 +115,39 @@ inet_out(inet *src)
 	return (dst);
 }
 
+/*
+ *	CIDR uses all of INET's funcs, just has a separate input func.
+ */
+
+inet *
+cidr_in(char *src)
+{
+	int			bits;
+	inet	   *dst;
+
+	dst = palloc(VARHDRSZ + sizeof(inet_struct));
+	if (dst == NULL)
+	{
+		elog(ERROR, "unable to allocate memory in cidr_in()");
+		return (NULL);
+	}
+	/* First, try for an IP V4 address: */
+	ip_family(dst) = AF_INET;
+	bits = inet_net_pton(ip_family(dst), src, &ip_v4addr(dst), ip_addrsize(dst));
+	if ((bits < 0) || (bits > 32))
+	{
+		/* Go for an IPV6 address here, before faulting out: */
+		elog(ERROR, "could not parse \"%s\"", src);
+		pfree(dst);
+		return (NULL);
+	}
+	VARSIZE(dst) = VARHDRSZ
+		+ ((char *) &ip_v4addr(dst) - (char *) VARDATA(dst))
+		+ ip_addrsize(dst);
+	ip_bits(dst) = bits;
+	return (dst);
+}
+
 /*
  *	Boolean tests for magnitude.  Add V4/V6 testing!
  */
@@ -267,20 +306,23 @@ inet_cmp(inet *a1, inet *a2)
 }
 
 text *
-inet_netmask(inet *ip)
+inet_host(inet *ip)
 {
-	text       *ret;
-	int         len;
+	text	   *ret;
+	int			len;
 	char	   *ptr,
 				tmp[sizeof("255.255.255.255/32")];
 
+	if (ip_type(ip))
+	{
+		elog(ERROR, "CIDR type has no host part");
+		return NULL;
+	}
+
 	if (ip_family(ip) == AF_INET)
 	{
 		/* It's an IP V4 address: */
-		int addr = htonl((-1 << (32 - ip_bits(ip))) & 0xffffffff);
-
-		/* a little wasteful by why reinvent the wheel? */
-		if (inet_net_ntop(AF_INET, &addr, 32, tmp, sizeof(tmp)) < 0)
+		if (inet_net_ntop(AF_INET, &ip_v4addr(ip), 32, tmp, sizeof(tmp)) < 0)
 		{
 			elog(ERROR, "unable to print netmask (%s)", strerror(errno));
 			return (NULL);
@@ -298,7 +340,7 @@ inet_netmask(inet *ip)
 	ret = palloc(len);
 	if (ret == NULL)
 	{
-		elog(ERROR, "unable to allocate memory in inet_netmask()");
+		elog(ERROR, "unable to allocate memory in inet_host()");
 		return (NULL);
 	}
 	VARSIZE(ret) = len;
@@ -307,7 +349,7 @@ inet_netmask(inet *ip)
 }
 
 int4
-inet_masklen(inet *ip)
+inet_netmasklen(inet *ip)
 {
 	return ip_bits(ip);
 }
@@ -315,15 +357,16 @@ inet_masklen(inet *ip)
 text *
 inet_broadcast(inet *ip)
 {
-	text       *ret;
-	int         len;
+	text	   *ret;
+	int			len;
 	char	   *ptr,
 				tmp[sizeof("255.255.255.255/32")] = "Hello";
 
 	if (ip_family(ip) == AF_INET)
 	{
 		/* It's an IP V4 address: */
-		int addr = htonl(ntohl(ip_v4addr(ip)) | (0xffffffff >> ip_bits(ip)));
+		int			addr = htonl(ntohl(ip_v4addr(ip)) | (0xffffffff >> ip_bits(ip)));
+
 		/* int addr = htonl(ip_v4addr(ip) | (0xffffffff >> ip_bits(ip))); */
 
 		if (inet_net_ntop(AF_INET, &addr, 32, tmp, sizeof(tmp)) < 0)
@@ -352,6 +395,45 @@ inet_broadcast(inet *ip)
 	return (ret);
 }
 
+text *
+inet_netmask(inet *ip)
+{
+	text	   *ret;
+	int			len;
+	char	   *ptr,
+				tmp[sizeof("255.255.255.255/32")];
+
+	if (ip_family(ip) == AF_INET)
+	{
+		/* It's an IP V4 address: */
+		int			addr = htonl((-1 << (32 - ip_bits(ip))) & 0xffffffff);
+
+		if (inet_net_ntop(AF_INET, &addr, 32, tmp, sizeof(tmp)) < 0)
+		{
+			elog(ERROR, "unable to print netmask (%s)", strerror(errno));
+			return (NULL);
+		}
+	}
+	else
+	{
+		/* Go for an IPV6 address here, before faulting out: */
+		elog(ERROR, "unknown address family (%d)", ip_family(ip));
+		return (NULL);
+	}
+	if ((ptr = strchr(tmp, '/')) != NULL)
+		*ptr = 0;
+	len = VARHDRSZ + strlen(tmp);
+	ret = palloc(len);
+	if (ret == NULL)
+	{
+		elog(ERROR, "unable to allocate memory in inet_netmask()");
+		return (NULL);
+	}
+	VARSIZE(ret) = len;
+	strcpy(VARDATA(ret), tmp);
+	return (ret);
+}
+
 /*
  *	Bitwise comparison for V4 addresses.  Add V6 implementation!
  */
@@ -372,4 +454,3 @@ v4bitncmp(unsigned int a1, unsigned int a2, int bits)
 		return (1);
 	return (0);
 }
-
diff --git a/src/include/catalog/pg_opclass.h b/src/include/catalog/pg_opclass.h
index 94186e469c..d342cd6c52 100644
--- a/src/include/catalog/pg_opclass.h
+++ b/src/include/catalog/pg_opclass.h
@@ -7,7 +7,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: pg_opclass.h,v 1.13 1998/10/08 00:19:38 momjian Exp $
+ * $Id: pg_opclass.h,v 1.14 1998/10/21 16:06:46 momjian Exp $
  *
  * NOTES
  *	  the genbki.sh script reads this file and generates .bki
@@ -111,5 +111,7 @@ DATA(insert OID = 810  (	macaddr_ops   829   ));
 DESCR("");
 DATA(insert OID = 935  (	inet_ops   869   ));
 DESCR("");
+DATA(insert OID = 652  (	inet_ops   650   ));
+DESCR("");
 
 #endif	 /* PG_OPCLASS_H */
diff --git a/src/include/catalog/pg_operator.h b/src/include/catalog/pg_operator.h
index 14166d5aef..53bdfc73ef 100644
--- a/src/include/catalog/pg_operator.h
+++ b/src/include/catalog/pg_operator.h
@@ -7,7 +7,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: pg_operator.h,v 1.40 1998/10/08 00:19:39 momjian Exp $
+ * $Id: pg_operator.h,v 1.41 1998/10/21 16:06:46 momjian Exp $
  *
  * NOTES
  *	  the genbki.sh script reads this file and generates .bki
@@ -643,7 +643,7 @@ DATA(insert OID = 1223 (  "<="	   PGUID 0 b t f 829 829	 16 1225 1224 0 0 macadd
 DATA(insert OID = 1224 (  ">"	   PGUID 0 b t f 829 829	 16 1222 1223 0 0 macaddr_gt intltsel intltjoinsel ));
 DATA(insert OID = 1225 (  ">="	   PGUID 0 b t f 829 829	 16 1223 1222 0 0 macaddr_ge intltsel intltjoinsel ));
 
-/* IP type */
+/* INET type */
 DATA(insert OID = 1201 (  "="	   PGUID 0 b t t 869 869	 16 1201 1202 0 0 inet_eq eqsel eqjoinsel ));
 DATA(insert OID = 1202 (  "<>"	   PGUID 0 b t f 869 869	 16 1202 1201 0 0 inet_ne neqsel neqjoinsel ));
 DATA(insert OID = 1203 (  "<"	   PGUID 0 b t f 869 869	 16 1205 1206 0 0 inet_lt intltsel intltjoinsel ));
@@ -655,6 +655,18 @@ DATA(insert OID = 932  (  "<<="	   PGUID 0 b t f 869 869     16 934  933  0 0 in
 DATA(insert OID = 933  (  ">>"	   PGUID 0 b t f 869 869     16 931  932  0 0 inet_sup intltsel intltjoinsel ));
 DATA(insert OID = 934  (  ">>="	   PGUID 0 b t f 869 869     16 932  931  0 0 inet_supeq intltsel intltjoinsel ));
 
+/* CIDR type */
+DATA(insert OID = 820 (  "="	   PGUID 0 b t t 650 650	 16 820 821 0 0 inet_eq eqsel eqjoinsel ));
+DATA(insert OID = 821 (  "<>"	   PGUID 0 b t f 650 650	 16 821 820 0 0 inet_ne neqsel neqjoinsel ));
+DATA(insert OID = 822 (  "<"	   PGUID 0 b t f 650 650	 16 824 825 0 0 inet_lt intltsel intltjoinsel ));
+DATA(insert OID = 823 (  "<="	   PGUID 0 b t f 650 650	 16 825 824 0 0 inet_le intltsel intltjoinsel ));
+DATA(insert OID = 824 (  ">"	   PGUID 0 b t f 650 650	 16 822 823 0 0 inet_gt intltsel intltjoinsel ));
+DATA(insert OID = 825 (  ">="	   PGUID 0 b t f 650 650	 16 823 822 0 0 inet_ge intltsel intltjoinsel ));
+DATA(insert OID = 826  (  "<<"	   PGUID 0 b t f 650 650     16 828 1004  0 0 inet_sub intltsel intltjoinsel ));
+DATA(insert OID = 827  (  "<<="	   PGUID 0 b t f 650 650     16 1004 828  0 0 inet_subeq intltsel intltjoinsel ));
+DATA(insert OID = 828  (  ">>"	   PGUID 0 b t f 650 650     16 826  827  0 0 inet_sup intltsel intltjoinsel ));
+DATA(insert OID = 1004  (  ">>="   PGUID 0 b t f 650 650     16 827  826  0 0 inet_supeq intltsel intltjoinsel ));
+
 
 /*
  * function prototypes
diff --git a/src/include/catalog/pg_proc.h b/src/include/catalog/pg_proc.h
index 1be26d5891..ae17cf1a1b 100644
--- a/src/include/catalog/pg_proc.h
+++ b/src/include/catalog/pg_proc.h
@@ -6,7 +6,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: pg_proc.h,v 1.74 1998/10/20 23:03:19 momjian Exp $
+ * $Id: pg_proc.h,v 1.75 1998/10/21 16:06:47 momjian Exp $
  *
  * NOTES
  *	  The script catalog/genbki.sh reads this file and generates .bki
@@ -2068,12 +2068,17 @@ DESCR("less-equal-greater");
 DATA(insert OID = 837 (  macaddr_manuf	   PGUID 11 f t f 1 f 25 "829" 100 0 0 100  foo bar ));
 DESCR("MAC manufacturer");
 
-/* for ip type support */
+/* for inet type support */
 DATA(insert OID = 910 (  inet_in			PGUID 11 f t f 1 f 869 "0" 100 0 0 100	foo bar ));
 DESCR("(internal)");
 DATA(insert OID = 911 (  inet_out			PGUID 11 f t f 1 f 23 "0" 100 0 0 100  foo bar ));
 DESCR("(internal)");
 
+/* for cidr type support */
+DATA(insert OID = 1267 (  cidr_in           PGUID 11 f t f 1 f 650 "0" 100 0 0 100  foo bar ));
+DESCR("(internal)");
+
+/* these are used for both inet and cidr */
 DATA(insert OID = 920 (  inet_eq		   PGUID 11 f t f 2 f 16 "869 869" 100 0 0 100  foo bar ));
 DESCR("equal");
 DATA(insert OID = 921 (  inet_lt		   PGUID 11 f t f 2 f 16 "869 869" 100 0 0 100  foo bar ));
@@ -2097,12 +2102,36 @@ DESCR("is-supernet");
 DATA(insert OID = 930 (  inet_supeq  	   PGUID 11 f t f 2 f 16 "869 869" 100 0 0 100  foo bar ));
 DESCR("is-supernet-or-equal");
 
+/* inet/cidr base versions */
 DATA(insert OID = 940 (  inet_netmask		PGUID 11 f t f 1 f 25 "869" 100 0 0 100  foo bar ));
 DESCR("netmask of inet address");
-DATA(insert OID = 941 (  inet_masklen		PGUID 11 f t f 1 f 23 "869" 100 0 0 100  foo bar ));
+DATA(insert OID = 941 (  inet_netmasklen	PGUID 11 f t f 1 f 23 "869" 100 0 0 100  foo bar ));
 DESCR("netmask length");
 DATA(insert OID = 945 (  inet_broadcast		PGUID 11 f t f 1 f 25 "869" 100 0 0 100  foo bar ));
 DESCR("broadcast address");
+DATA(insert OID = 682 (  inet_host			PGUID 11 f t f 1 f 25 "869" 100 0 0 100  foo bar ));
+DESCR("host address");
+
+/* inet versions */
+DATA(insert OID = 940 (  netmask		PGUID 14 f t f 1 f 25 "869" 100 0 0 100  "select inet_netmask($1)" - ));
+DESCR("netmask of address");
+DATA(insert OID = 941 (  netmasklen		PGUID 14 f t f 1 f 23 "869" 100 0 0 100  "select inet_netmasklen($1)" - ));
+DESCR("netmask length");
+DATA(insert OID = 945 (  broadcast		PGUID 14 f t f 1 f 25 "869" 100 0 0 100  "select inet_broadcast($1)" - ));
+DESCR("broadcast address");
+DATA(insert OID = 682 (  host			PGUID 14 f t f 1 f 25 "869" 100 0 0 100  "select inet_host($1)" - ));
+DESCR("host address");
+
+/* cidr versions */
+DATA(insert OID = 940 (  netmask		PGUID 14 f t f 1 f 25 "650" 100 0 0 100  "select inet_netmask($1)" - ));
+DESCR("netmask of address");
+DATA(insert OID = 941 (  netmasklen		PGUID 14 f t f 1 f 23 "650" 100 0 0 100  "select inet_netmasklen($1)" - ));
+DESCR("netmask length");
+DATA(insert OID = 945 (  broadcast		PGUID 14 f t f 1 f 25 "650" 100 0 0 100  "select inet_broadcast($1)" - ));
+DESCR("broadcast address");
+DATA(insert OID = 682 (  host			PGUID 14 f t f 1 f 25 "650" 100 0 0 100  "select inet_host($1)" - ));
+DESCR("host address");
+
 
 
 /*
diff --git a/src/include/catalog/pg_type.h b/src/include/catalog/pg_type.h
index 64118e3e9d..03a90370ac 100644
--- a/src/include/catalog/pg_type.h
+++ b/src/include/catalog/pg_type.h
@@ -7,7 +7,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: pg_type.h,v 1.49 1998/10/08 00:19:42 momjian Exp $
+ * $Id: pg_type.h,v 1.50 1998/10/21 16:06:48 momjian Exp $
  *
  * NOTES
  *	  the genbki.sh script reads this file and generates .bki
@@ -301,7 +301,9 @@ DATA(insert OID = 791 (  _money    PGUID  -1 -1 f b t \054 0  790 array_in array
 DATA(insert OID = 829 ( macaddr	   PGUID  6 -1 f b t \054 0	0 macaddr_in macaddr_out macaddr_in macaddr_out i _null_ ));
 DESCR("MAC address");
 DATA(insert OID = 869 ( inet	   PGUID  -1 -1 f b t \054 0 0 inet_in inet_out inet_in inet_out i _null_ ));
-DESCR("IP address");
+DESCR("Host address");
+DATA(insert OID = 650 ( cidr	   PGUID  -1 -1 f b t \054 0 0 cidr_in inet_out cidr_in inet_out i _null_ ));
+DESCR("Network address");
 
 /* OIDS 900 - 999 */
 
@@ -340,6 +342,7 @@ DESCR("access control list");
 DATA(insert OID = 1034 (  _aclitem	 PGUID -1 -1 f b t \054 0 1033 array_in array_out array_in array_out i _null_ ));
 DATA(insert OID = 1040 (  _macaddr   PGUID -1 -1 f b t \054 0  829 array_in array_out array_in array_out i _null_ ));
 DATA(insert OID = 1041 (  _inet    PGUID -1 -1 f b t \054 0  869 array_in array_out array_in array_out i _null_ ));
+DATA(insert OID = 651  (  _cidr    PGUID -1 -1 f b t \054 0  650 array_in array_out array_in array_out i _null_ ));
 DATA(insert OID = 1042 ( bpchar		 PGUID -1  -1 f b t \054 0	18 bpcharin bpcharout bpcharin bpcharout i _null_ ));
 DESCR("blank-padded characters, length specifed when created");
 #define BPCHAROID		1042
diff --git a/src/include/utils/builtins.h b/src/include/utils/builtins.h
index 9d9989a7c9..f6048b76b6 100644
--- a/src/include/utils/builtins.h
+++ b/src/include/utils/builtins.h
@@ -6,7 +6,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: builtins.h,v 1.62 1998/10/20 23:03:20 momjian Exp $
+ * $Id: builtins.h,v 1.63 1998/10/21 16:06:49 momjian Exp $
  *
  * NOTES
  *	  This should normally only be included by fmgr.h.
@@ -518,6 +518,9 @@ int inet_net_pton(int af, const char *src, void *dst, size_t size);
 char *inet_cidr_ntop(int af, const void *src, size_t len, int bits, char *dst, size_t size);
 int inet_cidr_pton(int af, const void *src, void *dst, size_t size, int *used);
 
+/* cidr.c */
+inet	   *cidr_in(char *str);
+
 /* inet.c */
 inet	   *inet_in(char *str);
 char	   *inet_out(inet * addr);
@@ -534,8 +537,9 @@ bool		inet_supeq(inet * a1, inet * a2);
 int4		inet_cmp(inet * a1, inet * a2);
 
 text	   *inet_netmask(inet * addr);
-int4		inet_masklen(inet * addr);
+int4		inet_netmasklen(inet * addr);
 text	   *inet_broadcast(inet * addr);
+text	   *inet_host(inet * addr);
 
 
 /* mac.c */
diff --git a/src/include/utils/inet.h b/src/include/utils/inet.h
index 5b5546ffbf..ea87c6a5c5 100644
--- a/src/include/utils/inet.h
+++ b/src/include/utils/inet.h
@@ -6,7 +6,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: inet.h,v 1.1 1998/10/08 00:19:45 momjian Exp $
+ * $Id: inet.h,v 1.2 1998/10/21 16:06:50 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -21,6 +21,7 @@ typedef struct
 {
 	unsigned char family;
 	unsigned char bits;
+	unsigned char type;
 	union
 	{
 		unsigned int	ipv4_addr;	/* network byte order */