Index: src/backend/libpq/auth.c
===================================================================
RCS file: /projects/cvsroot/pgsql/src/backend/libpq/auth.c,v
retrieving revision 1.167
diff -c -r1.167 auth.c
*** src/backend/libpq/auth.c	1 Aug 2008 11:41:12 -0000	1.167
--- src/backend/libpq/auth.c	12 Sep 2008 03:51:29 -0000
***************
*** 197,202 ****
--- 197,203 ----
  auth_failed(Port *port, int status)
  {
  	const char *errstr;
+ 	const char *hintstr;
  
  	/*
  	 * If we failed due to EOF from client, just quit; there's no point in
***************
*** 215,259 ****
  	{
  		case uaReject:
  			errstr = gettext_noop("authentication failed for user \"%s\": host rejected");
  			break;
  		case uaKrb5:
  			errstr = gettext_noop("Kerberos 5 authentication failed for user \"%s\"");
  			break;
  		case uaGSS:
  			errstr = gettext_noop("GSSAPI authentication failed for user \"%s\"");
  			break;
  		case uaSSPI:
  			errstr = gettext_noop("SSPI authentication failed for user \"%s\"");
  			break;
  		case uaTrust:
  			errstr = gettext_noop("\"trust\" authentication failed for user \"%s\"");
  			break;
  		case uaIdent:
  			errstr = gettext_noop("Ident authentication failed for user \"%s\"");
  			break;
  		case uaMD5:
  		case uaCrypt:
  		case uaPassword:
  			errstr = gettext_noop("password authentication failed for user \"%s\"");
  			break;
  #ifdef USE_PAM
  		case uaPAM:
  			errstr = gettext_noop("PAM authentication failed for user \"%s\"");
  			break;
  #endif   /* USE_PAM */
  #ifdef USE_LDAP
  		case uaLDAP:
  			errstr = gettext_noop("LDAP authentication failed for user \"%s\"");
  			break;
  #endif   /* USE_LDAP */
  		default:
  			errstr = gettext_noop("authentication failed for user \"%s\": invalid authentication method");
  			break;
  	}
  
  	ereport(FATAL,
  			(errcode(ERRCODE_INVALID_AUTHORIZATION_SPECIFICATION),
! 			 errmsg(errstr, port->user_name)));
  	/* doesn't return */
  }
  
--- 216,271 ----
  	{
  		case uaReject:
  			errstr = gettext_noop("authentication failed for user \"%s\": host rejected");
+ 			hintstr = gettext_noop("http://www.postgresql.org/docs/current/static/auth-methods.html");
  			break;
  		case uaKrb5:
  			errstr = gettext_noop("Kerberos 5 authentication failed for user \"%s\"");
+ 			hintstr = gettext_noop("http://www.postgresql.org/docs/current/static/auth-methods.html#GSSAPI-AUTH");
  			break;
  		case uaGSS:
  			errstr = gettext_noop("GSSAPI authentication failed for user \"%s\"");
+ 			hintstr = gettext_noop("http://www.postgresql.org/docs/current/static/auth-methods.html#GSSAPI-AUTH");
  			break;
  		case uaSSPI:
  			errstr = gettext_noop("SSPI authentication failed for user \"%s\"");
+ 			hintstr = gettext_noop("http://www.postgresql.org/docs/current/static/auth-methods.html#SSPI-AUTH");
  			break;
  		case uaTrust:
  			errstr = gettext_noop("\"trust\" authentication failed for user \"%s\"");
+ 			hintstr = gettext_noop("http://www.postgresql.org/docs/current/static/auth-methods.html#TRUST-AUTH");
  			break;
  		case uaIdent:
  			errstr = gettext_noop("Ident authentication failed for user \"%s\"");
+ 			hintstr = gettext_noop("http://www.postgresql.org/docs/current/static/client-authentication.html#AUTH-IDENT");
  			break;
  		case uaMD5:
  		case uaCrypt:
  		case uaPassword:
  			errstr = gettext_noop("password authentication failed for user \"%s\"");
+ 			hintstr = gettext_noop("http://www.postgresql.org/docs/current/static/auth-methods.html#AUTH-PASSWORD");
  			break;
  #ifdef USE_PAM
  		case uaPAM:
  			errstr = gettext_noop("PAM authentication failed for user \"%s\"");
+ 			hintstr = gettext_noop("http://www.postgresql.org/docs/current/static/auth-methods.html#AUTH-PAM");
  			break;
  #endif   /* USE_PAM */
  #ifdef USE_LDAP
  		case uaLDAP:
  			errstr = gettext_noop("LDAP authentication failed for user \"%s\"");
+ 			hintstr = gettext_noop("http://www.postgresql.org/docs/current/static/auth-methods.html#AUTH-PAM");
  			break;
  #endif   /* USE_LDAP */
  		default:
  			errstr = gettext_noop("authentication failed for user \"%s\": invalid authentication method");
+ 			hintstr = gettext_noop("http://www.postgresql.org/docs/current/static/auth-methods.html");
  			break;
  	}
  
  	ereport(FATAL,
  			(errcode(ERRCODE_INVALID_AUTHORIZATION_SPECIFICATION),
! 			 errmsg(errstr, port->user_name),
! 			 errhint(hintstr)));
  	/* doesn't return */
  }