Support "samehost" and "samenet" specifications in pg_hba.conf,

by enumerating the machine's IP interfaces to look for a match.

Stef Walter

3 files changed, 112 insertions, 0 deletions

diff --git a/src/tools/ifaddrs/Makefile b/src/tools/ifaddrs/Makefile
new file mode 100644
index 0000000000..6f5df48556
--- /dev/null
+++ b/src/tools/ifaddrs/Makefile
@@ -0,0 +1,27 @@
+#-------------------------------------------------------------------------
+#
+# Makefile for src/tools/ifaddrs
+#
+# Copyright (c) 2003-2009, PostgreSQL Global Development Group
+#
+# $PostgreSQL: pgsql/src/tools/ifaddrs/Makefile,v 1.1 2009/10/01 01:58:58 tgl Exp $
+#
+#-------------------------------------------------------------------------
+
+subdir = src/tools/ifaddrs
+top_builddir = ../../..
+include $(top_builddir)/src/Makefile.global
+
+libpq_backend_dir = $(top_builddir)/src/backend/libpq
+
+override CPPFLAGS := -I$(libpq_backend_dir) $(CPPFLAGS)
+
+OBJS = test_ifaddrs.o
+
+all: test_ifaddrs
+
+test_ifaddrs: test_ifaddrs.o $(libpq_backend_dir)/ip.o
+	$(CC) $(CFLAGS) test_ifaddrs.o $(libpq_backend_dir)/ip.o $(LDFLAGS) $(LIBS) -o $@$(X)
+
+clean distclean maintainer-clean:
+	rm -f test_ifaddrs$(X) $(OBJS)
diff --git a/src/tools/ifaddrs/README b/src/tools/ifaddrs/README
new file mode 100644
index 0000000000..9b0bd58517
--- /dev/null
+++ b/src/tools/ifaddrs/README
@@ -0,0 +1,12 @@
+$PostgreSQL: pgsql/src/tools/ifaddrs/README,v 1.1 2009/10/01 01:58:58 tgl Exp $
+
+test_ifaddrs
+============
+
+This program prints the addresses and netmasks of all the IPv4 and IPv6
+interfaces on the local machine.  It is useful for testing that this
+functionality works on various platforms.  If "samehost" and "samenet"
+in pg_hba.conf don't seem to work right, run this program to see what
+is happening.
+
+Usage:	test_ifaddrs
diff --git a/src/tools/ifaddrs/test_ifaddrs.c b/src/tools/ifaddrs/test_ifaddrs.c
new file mode 100644
index 0000000000..78013106cc
--- /dev/null
+++ b/src/tools/ifaddrs/test_ifaddrs.c
@@ -0,0 +1,73 @@
+/*
+ * $PostgreSQL: pgsql/src/tools/ifaddrs/test_ifaddrs.c,v 1.1 2009/10/01 01:58:58 tgl Exp $
+ *
+ *
+ *	test_ifaddrs.c
+ *		test pg_foreach_ifaddr()
+ */
+
+#include "postgres.h"
+
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+
+#include "libpq/ip.h"
+
+
+static void
+print_addr(struct sockaddr *addr)
+{
+	char buffer[256];
+	int ret, len;
+
+	switch (addr->sa_family)
+	{
+		case AF_INET:
+			len = sizeof(struct sockaddr_in);
+			break;
+#ifdef HAVE_IPV6
+		case AF_INET6:
+			len = sizeof(struct sockaddr_in6);
+			break;
+#endif
+		default:
+			len = sizeof(struct sockaddr_storage);
+			break;
+	}
+
+	ret = getnameinfo(addr, len, buffer, sizeof(buffer), NULL, 0,
+					  NI_NUMERICHOST);
+	if (ret != 0)
+		printf("[unknown: family %d]", addr->sa_family);
+	else
+		printf("%s", buffer);
+}
+
+static void
+callback(struct sockaddr *addr, struct sockaddr *mask, void *unused)
+{
+	printf("addr: ");
+	print_addr(addr);
+	printf("  mask: ");
+	print_addr(mask);
+	printf("\n");
+}
+
+int
+main(int argc, char *argv[])
+{
+#ifdef WIN32
+	WSADATA wsaData;
+
+	if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)
+	{
+		fprintf(stderr, "WSAStartup failed\n");
+		return 1;
+	}
+#endif
+
+	if (pg_foreach_ifaddr(callback, NULL) < 0)
+		fprintf(stderr, "pg_foreach_ifaddr failed: %s\n", strerror(errno));
+	return 0;
+}