Allow kerberos name and username case sensitivity to be specified from

configure

@@ -869,7 +869,7 @@ Optional Packages:
   --with-python           build Python modules (PL/Python)
   --with-krb4             build with Kerberos 4 support
   --with-krb5             build with Kerberos 5 support
-  --with-krb-srvnam=NAME  name of the service principal in Kerberos [postgres]
+  --with-krb-srvnam=NAME  name of the default service principal in Kerberos [postgres]
   --with-pam              build with PAM support
   --with-bonjour          build with Bonjour support
   --with-openssl          build with OpenSSL support

configure.in

@@ -1,5 +1,5 @@
 dnl Process this file with autoconf to produce a configure script.
-dnl $PostgreSQL: pgsql/configure.in,v 1.411 2005/05/15 00:26:18 momjian Exp $
+dnl $PostgreSQL: pgsql/configure.in,v 1.412 2005/06/04 20:42:41 momjian Exp $
 dnl
 dnl Developers, please strive to achieve this order:
 dnl
@@ -447,11 +447,11 @@ AC_SUBST(krb_srvtab)
 # Kerberos configuration parameters
 #
 PGAC_ARG_REQ(with, krb-srvnam,
-             [  --with-krb-srvnam=NAME  name of the service principal in Kerberos [[postgres]]],
+             [  --with-krb-srvnam=NAME  name of the default service principal in Kerberos [[postgres]]],
              [],
              [with_krb_srvnam="postgres"])
 AC_DEFINE_UNQUOTED([PG_KRB_SRVNAM], ["$with_krb_srvnam"],
-                   [Define to the name of the PostgreSQL service principal in Kerberos. (--with-krb-srvnam=NAME)])
+                   [Define to the name of the default PostgreSQL service principal in Kerberos. (--with-krb-srvnam=NAME)])
 
 
 #

doc/src/sgml/client-auth.sgml

@@ -1,5 +1,5 @@
 <!--
-$PostgreSQL: pgsql/doc/src/sgml/client-auth.sgml,v 1.79 2005/04/27 20:11:07 momjian Exp $
+$PostgreSQL: pgsql/doc/src/sgml/client-auth.sgml,v 1.80 2005/06/04 20:42:41 momjian Exp $
 -->
 
 <chapter id="client-authentication">
@@ -617,7 +617,7 @@ local   db1,db2,@demodbs  all                         md5
     quite complex (yet powerful). The 
     <ulink url="http://www.nrl.navy.mil/CCS/people/kenh/kerberos-faq.html">
     Kerberos <acronym>FAQ</></ulink> or 
-    <ulink url="ftp://athena-dist.mit.edu">MIT Project Athena</ulink>
+    <ulink url="http://web.mit.edu/kerberos/www/">MIT Kerberos page</ulink>
     can be a good starting point for exploration.
     Several sources for <productname>Kerberos</> distributions exist.
    </para>
@@ -626,23 +626,29 @@ local   db1,db2,@demodbs  all                         md5
     While <productname>PostgreSQL</> supports both Kerberos 4 and 
     Kerberos 5, only Kerberos 5 is recommended.  Kerberos 4 is
     considered insecure and no longer recommended for general
-    use.
+    use. Only one version of Kerberos can be supported in any one
-   </para>
+		build, and support must be enabled at build time. See
-
+		<xref linkend="installation"> for more information.
-   <para>
-    In order to use <productname>Kerberos</>, support for it must be
-    enabled at build time.  See <xref linkend="installation"> for more
-    information.  Both Kerberos 4 and 5 are supported, but only one
-    version can be supported in any one build.
    </para>
 
    <para>
     <productname>PostgreSQL</> operates like a normal Kerberos service.
     The name of the service principal is
-    <literal><replaceable>servicename</>/<replaceable>hostname</>@<replaceable>realm</></literal>, where
+    <literal><replaceable>servicename</>/<replaceable>hostname</>@<replaceable>realm</></literal>.
-    <replaceable>servicename</> is <literal>postgres</literal> (unless a
+	 </para>
-    different service name was selected at configure time with
+	  <para>
-    <literal>./configure --with-krb-srvnam=whatever</>).
+    <replaceable>servicename</> can be set on the server side using the
+    <xref linkend="guc-krb-srvname"> configuration parameter, and on the
+    client side using the krbsrvname connection parameter. (See also <xref linkend="libpq-connect">.). The installation default can be changed from the default
+		<literal>postgres</literal> at build time using 
+    <literal>./configure --with-krb-srvnam=whatever</>). In most environments,
+		this parameter never needs to be changed. However, to support multiple
+		<productname>PostgreSQL</> installations on the same host it is necessary.
+		Some Kerberos implementations may also require a different service name,
+		such as Microsoft Active Directory which requires the service name
+		to be in uppercase (<literal>POSTGRES</literal>).
+	 </para>
+	 <para>
     <replaceable>hostname</> is the fully qualified host name of the
     server machine. The service principal's realm is the preferred realm
     of the server machine.
@@ -658,12 +664,12 @@ local   db1,db2,@demodbs  all                         md5
    </para>
 
    <para>
-    Make sure that your server key file is readable (and preferably
+    Make sure that your server keytab file is readable (and preferably
     only readable) by the <productname>PostgreSQL</productname> server
     account.  (See also <xref linkend="postgres-user">.) The location
     of the key file is specified by the <xref
     linkend="guc-krb-server-keyfile"> configuration
-    parameter. (See also <xref linkend="runtime-config">.) The default
+    parameter. The default
     is <filename>/etc/srvtab</> if you are using Kerberos 4 and
     <filename>/usr/local/pgsql/etc/krb5.keytab</> (or whichever
     directory was specified as <varname>sysconfdir</> at build time)
@@ -671,12 +677,13 @@ local   db1,db2,@demodbs  all                         md5
    </para>
 
    <para>
-    To generate the keytab file, use for example (with version 5)
+	  The keytab file is generated in the Kerberos system, see the 
+		Kerberos documentation for details. The following example is 
+		for MIT-compatible Kerberos 5 implementations:
 <screen>
 <prompt>kadmin% </><userinput>ank -randkey postgres/server.my.domain.org</>
 <prompt>kadmin% </><userinput>ktadd -k krb5.keytab postgres/server.my.domain.org</>
 </screen>
-    Read the <productname>Kerberos</> documentation for details.
    </para>
 
    <para>

doc/src/sgml/installation.sgml

@@ -1,4 +1,4 @@
-<!-- $PostgreSQL: pgsql/doc/src/sgml/installation.sgml,v 1.233 2005/05/15 00:26:18 momjian Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/installation.sgml,v 1.234 2005/06/04 20:42:41 momjian Exp $ -->
 
 <chapter id="installation">
  <title><![%standalone-include[<productname>PostgreSQL</>]]>
@@ -816,8 +816,8 @@ su - postgres
        <term><option>--with-krb-srvnam=<replaceable>NAME</></option></term>
        <listitem>
         <para>
-         The name of the Kerberos service principal.
+         The default name of the Kerberos service principal.
-         <literal>postgres</literal> is the default. There's probably no
+         <literal>postgres</literal> is the default. There's usually no
          reason to change this.
         </para>
        </listitem>

doc/src/sgml/libpq.sgml

@@ -1,5 +1,5 @@
 <!--
-$PostgreSQL: pgsql/doc/src/sgml/libpq.sgml,v 1.181 2005/05/30 19:32:44 momjian Exp $
+$PostgreSQL: pgsql/doc/src/sgml/libpq.sgml,v 1.182 2005/06/04 20:42:41 momjian Exp $
 -->
 
  <chapter id="libpq">
@@ -279,6 +279,18 @@ PGconn *PQconnectdb(const char *conninfo);
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>krbsrvname</literal></term>
+     <listitem>
+      <para>
+       Kerberos service name to use when authenticating with Kerberos 4 or 5.
+       This must match the service name specified in the server
+       configuration for Kerberos authentication to succeed. (See also
+			 <xref linkend="kerberos-auth">.)
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>service</literal></term>
      <listitem>
@@ -3770,6 +3782,15 @@ setting, and is only available if
 </listitem>
 <listitem>
 <para>
+<indexterm>
+ <primary><envar>PGKRBSRVNAME</envar></primary>
+</indexterm>
+<envar>PGKRBSRVNAME</envar> sets the Kerberos service name to use when
+authenticating with Kerberos 4 or 5.
+</para>
+</listitem>
+<listitem>
+<para>
 <indexterm>
  <primary><envar>PGCONNECT_TIMEOUT</envar></primary>
 </indexterm>

doc/src/sgml/runtime.sgml

@@ -1,5 +1,5 @@
 <!--
-$PostgreSQL: pgsql/doc/src/sgml/runtime.sgml,v 1.321 2005/05/25 02:56:15 neilc Exp $
+$PostgreSQL: pgsql/doc/src/sgml/runtime.sgml,v 1.322 2005/06/04 20:42:41 momjian Exp $
 -->
 
 <chapter Id="runtime">
@@ -955,11 +955,39 @@ SET ENABLE_SEQSCAN TO OFF;
       <listitem>
        <para>
         Sets the location of the Kerberos server key file. See
-        <xref linkend="kerberos-auth"> for details.
+        <xref linkend="kerberos-auth"> for details. This parameter
+		can only be set at server start.
        </para>
       </listitem>
      </varlistentry>
 
+     <varlistentry id="guc-krb-srvname" xreflabel="krb_srvname">
+      <term><varname>krb_srvname</varname> (<type>string</type>)</term>
+      <indexterm>
+       <primary><varname>krb_srvname</> configuration parameter</primary>
+      </indexterm>
+      <listitem>
+       <para>
+        Sets the Kerberos service name. See <xref linkend="kerberos-auth">
+        for details. This parameter can only be set at server start.
+       </para>
+      </listitem>
+     </varlistentry>
+
+	 <varlistentry id="guc-krb-caseins-users" xreflabel="krb_caseins_users">
+	  <term><varname>krb_caseins_users</varname> (<type>boolean</type>)</term>
+	  <indexterm>
+	   <primary><varname>krb_caseins_users</varname> configuration parameter</primary>
+      </indexterm>
+	  <listitem>
+	   <para>
+	    Sets if Kerberos usernames should be treated case-insensitive.
+		The default is off (case sensitive). This parameter can only be
+		set at server start.
+       </para>
+	  </listitem>
+	 </varlistentry>
+
      <varlistentry id="guc-db-user-namespace" xreflabel="db_user_namespace">
       <term><varname>db_user_namespace</varname> (<type>boolean</type>)</term>
       <indexterm>

src/backend/libpq/auth.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/libpq/auth.c,v 1.123 2005/02/22 04:35:57 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/backend/libpq/auth.c,v 1.124 2005/06/04 20:42:42 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -41,6 +41,8 @@ static char *recv_password_packet(Port *port);
 static int	recv_and_check_password_packet(Port *port);
 
 char	   *pg_krb_server_keyfile;
+char       *pg_krb_srvnam;
+bool		pg_krb_caseins_users;
 
 #ifdef USE_PAM
 #ifdef HAVE_PAM_PAM_APPL_H
@@ -99,7 +101,7 @@ pg_krb4_recvauth(Port *port)
 	status = krb_recvauth(krbopts,
 						  port->sock,
 						  &clttkt,
-						  PG_KRB_SRVNAM,
+						  pg_krb_srvnam,
 						  instance,
 						  &port->raddr.in,
 						  &port->laddr.in,
@@ -219,16 +221,16 @@ pg_krb5_init(void)
 		return STATUS_ERROR;
 	}
 
-	retval = krb5_sname_to_principal(pg_krb5_context, NULL, PG_KRB_SRVNAM,
+	retval = krb5_sname_to_principal(pg_krb5_context, NULL, pg_krb_srvnam,
 									 KRB5_NT_SRV_HST, &pg_krb5_server);
 	if (retval)
 	{
 		ereport(LOG,
 		 (errmsg("Kerberos sname_to_principal(\"%s\") returned error %d",
-				 PG_KRB_SRVNAM, retval)));
+				 pg_krb_srvnam, retval)));
 		com_err("postgres", retval,
 				"while getting server principal for service \"%s\"",
-				PG_KRB_SRVNAM);
+				pg_krb_srvnam);
 		krb5_kt_close(pg_krb5_context, pg_krb5_keytab);
 		krb5_free_context(pg_krb5_context);
 		return STATUS_ERROR;
@@ -264,7 +266,7 @@ pg_krb5_recvauth(Port *port)
 		return ret;
 
 	retval = krb5_recvauth(pg_krb5_context, &auth_context,
-						   (krb5_pointer) & port->sock, PG_KRB_SRVNAM,
+						   (krb5_pointer) & port->sock, "postgres",
 						   pg_krb5_server, 0, pg_krb5_keytab, &ticket);
 	if (retval)
 	{
@@ -303,7 +305,11 @@ pg_krb5_recvauth(Port *port)
 	}
 
 	kusername = pg_an_to_ln(kusername);
-	if (strncmp(port->user_name, kusername, SM_DATABASE_USER))
+	if (pg_krb_caseins_users)
+		ret = strncasecmp(port->user_name, kusername, SM_DATABASE_USER);
+	else
+		ret = strncmp(port->user_name, kusername, SM_DATABASE_USER);
+	if (ret)
 	{
 		ereport(LOG,
 				(errmsg("unexpected Kerberos user name received from client (received \"%s\", expected \"%s\")",

src/backend/utils/misc/guc.c

@@ -10,7 +10,7 @@
  * Written by Peter Eisentraut <peter_e@gmx.net>.
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.263 2005/05/27 18:33:30 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.264 2005/06/04 20:42:42 momjian Exp $
  *
  *--------------------------------------------------------------------
  */
@@ -63,6 +63,9 @@
 #ifndef PG_KRB_SRVTAB
 #define PG_KRB_SRVTAB ""
 #endif
+#ifndef PG_KRB_SRVNAM
+#define PG_KRB_SRVNAM ""
+#endif
 
 #define CONFIG_FILENAME	"postgresql.conf"
 #define HBA_FILENAME	"pg_hba.conf"
@@ -860,6 +863,15 @@ static struct config_bool ConfigureNamesBool[] =
 #endif
 	},
 
+	{
+		{"krb_caseins_users", PGC_POSTMASTER, CONN_AUTH_SECURITY,
+			gettext_noop("Sets if Kerberos user names should be treated case insensitive."),
+			NULL
+		},
+		&pg_krb_caseins_users,
+		false, NULL, NULL
+	},
+
 	/* End-of-list marker */
 	{
 		{NULL, 0, 0, NULL, NULL}, NULL, false, NULL, NULL
@@ -1572,6 +1584,15 @@ static struct config_string ConfigureNamesString[] =
 		PG_KRB_SRVTAB, NULL, NULL
 	},
 
+	{
+		{"krb_srvname", PGC_POSTMASTER, CONN_AUTH_SECURITY,
+			gettext_noop("Sets the name of the Kerberos service."),
+			NULL
+		},
+		&pg_krb_srvnam,
+		PG_KRB_SRVNAM, NULL, NULL
+	},
+
 	{
 		{"bonjour_name", PGC_POSTMASTER, CONN_AUTH_SETTINGS,
 			gettext_noop("Sets the Bonjour broadcast service name."),

src/backend/utils/misc/postgresql.conf.sample

@@ -64,8 +64,11 @@
 #authentication_timeout = 60	# 1-600, in seconds
 #ssl = false
 #password_encryption = true
-#krb_server_keyfile = ''
 #db_user_namespace = false
+# Kerberos
+#krb_server_keyfile = ''
+#krb_caseins_users = false
+#krb_srvname = 'postgres'
 
 
 #---------------------------------------------------------------------------

src/include/libpq/auth.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/libpq/auth.h,v 1.26 2004/12/31 22:03:32 pgsql Exp $
+ * $PostgreSQL: pgsql/src/include/libpq/auth.h,v 1.27 2005/06/04 20:42:42 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -27,5 +27,7 @@ extern void ClientAuthentication(Port *port);
 #define PG_KRB5_VERSION "PGVER5.1"
 
 extern char *pg_krb_server_keyfile;
+extern char *pg_krb_srvnam;
+extern bool pg_krb_caseins_users;
 
 #endif   /* AUTH_H */

src/include/pg_config.h.in

@@ -602,7 +602,7 @@
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 
-/* Define to the name of the PostgreSQL service principal in Kerberos.
+/* Define to the name of the default PostgreSQL service principal in Kerberos.
    (--with-krb-srvnam=NAME) */
 #undef PG_KRB_SRVNAM
 
@@ -635,6 +635,9 @@
 /* Define to 1 to build with assertion checks. (--enable-cassert) */
 #undef USE_ASSERT_CHECKING
 
+/* Define to 1 to build with Bonjour support. (--with-bonjour) */
+#undef USE_BONJOUR
+
 /* Define to 1 if you want 64-bit integer timestamp and interval support.
    (--enable-integer-datetimes) */
 #undef USE_INTEGER_DATETIMES
@@ -645,9 +648,6 @@
 /* Define to 1 to build with PAM support. (--with-pam) */
 #undef USE_PAM
 
-/* Define to 1 to build with Bonjour support. (--with-bonjour) */
-#undef USE_BONJOUR
-
 /* Use replacement snprintf() functions. */
 #undef USE_SNPRINTF
 

src/interfaces/libpq/fe-auth.c

@@ -10,7 +10,7 @@
  * exceed INITIAL_EXPBUFFER_SIZE (currently 256 bytes).
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/interfaces/libpq/fe-auth.c,v 1.100 2005/03/25 00:34:28 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/interfaces/libpq/fe-auth.c,v 1.101 2005/06/04 20:42:43 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -196,7 +196,8 @@ static int
 pg_krb4_sendauth(char *PQerrormsg, int sock,
 				 struct sockaddr_in * laddr,
 				 struct sockaddr_in * raddr,
-				 const char *hostname)
+				 const char *hostname, 
+				 const char *servicename)
 {
 	long		krbopts = 0;	/* one-way authentication */
 	KTEXT_ST	clttkt;
@@ -216,7 +217,7 @@ pg_krb4_sendauth(char *PQerrormsg, int sock,
 	status = krb_sendauth(krbopts,
 						  sock,
 						  &clttkt,
-						  PG_KRB_SRVNAM,
+						  servicename,
 						  hostname,
 						  realm,
 						  (u_long) 0,
@@ -260,6 +261,10 @@ pg_krb4_sendauth(char *PQerrormsg, int sock,
  *	   provide an aname mapping database...it may be a better idea to use
  *	   krb5_an_to_ln, except that it punts if multiple components are found,
  *	   and we can't afford to punt.
+ *
+ * For WIN32, convert username to lowercase because the Win32 kerberos library
+ * generates tickets with the username as the user entered it instead of as
+ * it is entered in the directory.
  */
 static char *
 pg_an_to_ln(char *aname)
@@ -268,6 +273,11 @@ pg_an_to_ln(char *aname)
 
 	if ((p = strchr(aname, '/')) || (p = strchr(aname, '@')))
 		*p = '\0';
+#ifdef WIN32
+	for (p = aname; *p ; p++)
+		*p = pg_tolower(*p);
+#endif
+
 	return aname;
 }
 
@@ -360,7 +370,7 @@ pg_krb5_authname(char *PQerrormsg)
  *					   the server
  */
 static int
-pg_krb5_sendauth(char *PQerrormsg, int sock, const char *hostname)
+pg_krb5_sendauth(char *PQerrormsg, int sock, const char *hostname, const char *servicename)
 {
 	krb5_error_code retval;
 	int			ret;
@@ -379,7 +389,7 @@ pg_krb5_sendauth(char *PQerrormsg, int sock, const char *hostname)
 	if (ret != STATUS_OK)
 		return ret;
 
-	retval = krb5_sname_to_principal(pg_krb5_context, hostname, PG_KRB_SRVNAM,
+	retval = krb5_sname_to_principal(pg_krb5_context, hostname, servicename,
 									 KRB5_NT_SRV_HST, &server);
 	if (retval)
 	{
@@ -405,7 +415,7 @@ pg_krb5_sendauth(char *PQerrormsg, int sock, const char *hostname)
 	}
 
 	retval = krb5_sendauth(pg_krb5_context, &auth_context,
-						   (krb5_pointer) & sock, PG_KRB_SRVNAM,
+						   (krb5_pointer) & sock, "postgres",
 						   pg_krb5_client, server,
 						   AP_OPTS_MUTUAL_REQUIRED,
 						   NULL, 0,		/* no creds, use ccache instead */
@@ -602,7 +612,7 @@ fe_sendauth(AuthRequest areq, PGconn *conn, const char *hostname,
 			if (pg_krb4_sendauth(PQerrormsg, conn->sock,
 							   (struct sockaddr_in *) & conn->laddr.addr,
 							   (struct sockaddr_in *) & conn->raddr.addr,
-								 hostname) != STATUS_OK)
+								 hostname, conn->krbsrvname) != STATUS_OK)
 			{
 				/* PQerrormsg already filled in */
 				pgunlock_thread();
@@ -620,7 +630,7 @@ fe_sendauth(AuthRequest areq, PGconn *conn, const char *hostname,
 #ifdef KRB5
 			pglock_thread();
 			if (pg_krb5_sendauth(PQerrormsg, conn->sock,
-								 hostname) != STATUS_OK)
+								 hostname, conn->krbsrvname) != STATUS_OK)
 			{
 				/* PQerrormsg already filled in */
 				pgunlock_thread();

src/interfaces/libpq/fe-connect.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/interfaces/libpq/fe-connect.c,v 1.306 2005/05/05 16:40:42 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/interfaces/libpq/fe-connect.c,v 1.307 2005/06/04 20:42:43 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -170,6 +170,12 @@ static const PQconninfoOption PQconninfoOptions[] = {
 	{"sslmode", "PGSSLMODE", DefaultSSLMode, NULL,
 	"SSL-Mode", "", 8},			/* sizeof("disable") == 8 */
 
+#if defined(KRB4) || defined(KRB5)
+	/* Kerberos authentication supports specifying the service name */
+	{"krbsrvname", "PGKRBSRVNAME", PG_KRB_SRVNAM, NULL,
+	 "Kerberos-service-name", "", 20},
+#endif
+
 	/* Terminating entry --- MUST BE LAST */
 	{NULL, NULL, NULL, NULL,
 	NULL, NULL, 0}
@@ -393,6 +399,10 @@ connectOptions1(PGconn *conn, const char *conninfo)
 		conn->sslmode = strdup("require");
 	}
 #endif
+#if defined(KRB4) || defined(KRB5)
+	tmp = conninfo_getval(connOptions, "krbsrvname");
+	conn->krbsrvname = tmp ? strdup(tmp) : NULL;
+#endif
 
 	/*
 	 * Free the option info - all is in conn now
@@ -2074,6 +2084,10 @@ freePGconn(PGconn *conn)
 		free(conn->pgpass);
 	if (conn->sslmode)
 		free(conn->sslmode);
+#if defined(KRB4) || defined(KRB5)
+	if (conn->krbsrvname)
+		free(conn->krbsrvname);
+#endif
 	/* Note that conn->Pfdebug is not ours to close or free */
 	notify = conn->notifyHead;
 	while (notify != NULL)

src/interfaces/libpq/libpq-int.h

@@ -12,7 +12,7 @@
  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/interfaces/libpq/libpq-int.h,v 1.100 2005/01/06 00:59:47 tgl Exp $
+ * $PostgreSQL: pgsql/src/interfaces/libpq/libpq-int.h,v 1.101 2005/06/04 20:42:43 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -261,6 +261,9 @@ struct pg_conn
 	char	   *pguser;			/* Postgres username and password, if any */
 	char	   *pgpass;
 	char	   *sslmode;		/* SSL mode (require,prefer,allow,disable) */
+#if defined(KRB5) || defined(KRB4)
+	char       *krbsrvname;     /* Kerberos service name */
+#endif
 
 	/* Optional file to write trace info to */
 	FILE	   *Pfdebug;