Fix bug #5372. With a large CUPS installation with a remote server, contacting

the server when searching for a name for the location and comment fields can
take so much time the client times out. When searching for a name we don't
use these fields anyway, so add a function get_a_printer_search() which
doesn't contact the CUPS server.
Jeremy.
(This used to be commit 92d9f20852d5384e92a93dd0b051034718840ca8)

2 files changed, 45 insertions, 12 deletions

diff --git a/source3/printing/nt_printing.c b/source3/printing/nt_printing.c
index 68b035962f..7b03a32fa8 100644
--- a/source3/printing/nt_printing.c
+++ b/source3/printing/nt_printing.c
@@ -3973,7 +3973,11 @@ static void map_to_os2_driver(fstring drivername)
 /****************************************************************************
  Get a default printer info 2 struct.
 ****************************************************************************/
-static WERROR get_a_printer_2_default(NT_PRINTER_INFO_LEVEL_2 *info, const char *servername, const char* sharename)
+
+static WERROR get_a_printer_2_default(NT_PRINTER_INFO_LEVEL_2 *info,
+				const char *servername,
+				const char* sharename,
+				bool get_loc_com)
 {
 	int snum = lp_servicenumber(sharename);
 
@@ -4000,7 +4004,7 @@ static WERROR get_a_printer_2_default(NT_PRINTER_INFO_LEVEL_2 *info, const char
 	fstrcpy(info->datatype, "RAW");
 
 #ifdef HAVE_CUPS
-	if ( (enum printing_types)lp_printing(snum) == PRINT_CUPS ) {		
+	if (get_loc_com && (enum printing_types)lp_printing(snum) == PRINT_CUPS ) {		
 		/* Pull the location and comment strings from cups if we don't
 		   already have one */
 		if ( !strlen(info->location) || !strlen(info->comment) )
@@ -4049,7 +4053,11 @@ fail:
 
 /****************************************************************************
 ****************************************************************************/
-static WERROR get_a_printer_2(NT_PRINTER_INFO_LEVEL_2 *info, const char *servername, const char *sharename)
+
+static WERROR get_a_printer_2(NT_PRINTER_INFO_LEVEL_2 *info,
+				const char *servername,
+				const char *sharename,
+				bool get_loc_com)
 {
 	int len = 0;
 	int snum = lp_servicenumber(sharename);
@@ -4062,7 +4070,8 @@ static WERROR get_a_printer_2(NT_PRINTER_INFO_LEVEL_2 *info, const char *servern
 
 	dbuf = tdb_fetch(tdb_printers, kbuf);
 	if (!dbuf.dptr) {
-		return get_a_printer_2_default(info, servername, sharename);
+		return get_a_printer_2_default(info, servername,
+					sharename, get_loc_com);
 	}
 
 	len += tdb_unpack(dbuf.dptr+len, dbuf.dsize-len, "dddddddddddfffffPfffff",
@@ -4110,7 +4119,7 @@ static WERROR get_a_printer_2(NT_PRINTER_INFO_LEVEL_2 *info, const char *servern
 	fstrcpy(info->printername, printername);
 
 #ifdef HAVE_CUPS
-	if ( (enum printing_types)lp_printing(snum) == PRINT_CUPS ) {		
+	if (get_loc_com && (enum printing_types)lp_printing(snum) == PRINT_CUPS ) {
 		/* Pull the location and comment strings from cups if we don't
 		   already have one */
 		if ( !strlen(info->location) || !strlen(info->comment) )
@@ -4694,8 +4703,8 @@ WERROR save_driver_init(NT_PRINTER_INFO_LEVEL *printer, uint32 level, uint8 *dat
 
 ****************************************************************************/
 
-WERROR get_a_printer( Printer_entry *print_hnd, NT_PRINTER_INFO_LEVEL **pp_printer, uint32 level, 
-			const char *sharename)
+static WERROR get_a_printer_internal( Printer_entry *print_hnd, NT_PRINTER_INFO_LEVEL **pp_printer, uint32 level, 
+			const char *sharename, bool get_loc_com)
 {
 	WERROR result;
 	fstring servername;
@@ -4723,11 +4732,11 @@ WERROR get_a_printer( Printer_entry *print_hnd, NT_PRINTER_INFO_LEVEL **pp_print
 						    sizeof(servername)-1 );
 			}
 
-			result = get_a_printer_2( (*pp_printer)->info_2, servername, sharename );
-	
-			
+			result = get_a_printer_2( (*pp_printer)->info_2,
+					servername, sharename, get_loc_com);
+
 			/* we have a new printer now.  Save it with this handle */
-			
+
 			if ( !W_ERROR_IS_OK(result) ) {
 				TALLOC_FREE( *pp_printer );
 				DEBUG(10,("get_a_printer: [%s] level %u returning %s\n", 
@@ -4747,6 +4756,24 @@ WERROR get_a_printer( Printer_entry *print_hnd, NT_PRINTER_INFO_LEVEL **pp_print
 	return WERR_OK;
 }
 
+WERROR get_a_printer( Printer_entry *print_hnd,
+			NT_PRINTER_INFO_LEVEL **pp_printer,
+			uint32 level,
+			const char *sharename)
+{
+	return get_a_printer_internal(print_hnd, pp_printer, level,
+					sharename, true);
+}
+
+WERROR get_a_printer_search( Printer_entry *print_hnd,
+			NT_PRINTER_INFO_LEVEL **pp_printer,
+			uint32 level,
+			const char *sharename)
+{
+	return get_a_printer_internal(print_hnd, pp_printer, level,
+					sharename, false);
+}
+
 /****************************************************************************
  Deletes a NT_PRINTER_INFO_LEVEL struct.
 ****************************************************************************/
diff --git a/source3/rpc_server/srv_spoolss_nt.c b/source3/rpc_server/srv_spoolss_nt.c
index 403beb6782..7788e763fa 100644
--- a/source3/rpc_server/srv_spoolss_nt.c
+++ b/source3/rpc_server/srv_spoolss_nt.c
@@ -521,7 +521,13 @@ static bool set_printer_hnd_name(Printer_entry *Printer, char *handlename)
 		fstrcpy(sname, lp_servicename(snum));
 
 		printer = NULL;
-		result = get_a_printer( NULL, &printer, 2, sname );
+
+		/* This call doesn't fill in the location or comment from
+		 * a CUPS server for efficiency with large numbers of printers.
+		 * JRA.
+		 */
+
+		result = get_a_printer_search( NULL, &printer, 2, sname );
 		if ( !W_ERROR_IS_OK(result) ) {
 			DEBUG(0,("set_printer_hnd_name: failed to lookup printer [%s] -- result [%s]\n",
 				sname, dos_errstr(result)));