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samba-mirror/source3/printing/load.c
Volker Lendecke c2b8cf05c3 s3:printing: Move pcap_cache_loaded() to load.c
A future patch will remove the PRINTING dependency from smbd, but in
delete_and_reload_printers() we still reference it.

Maybe at some later stage we can remove reload_printers() overall, we
don't really need to load the full printer list into every smbd. All
we need is to load them on-demand for explicit listing functions, but
there we can throw them away again. And when someone connects to the
printer, we can also load them on demand.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2021-12-10 14:02:30 +00:00

110 lines
2.7 KiB
C

/*
Unix SMB/CIFS implementation.
load printer lists
Copyright (C) Andrew Tridgell 1992-2000
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "printing/pcap.h"
#include "printing/printer_list.h"
#include "printing/load.h"
#include "lib/param/loadparm.h"
/***************************************************************************
auto-load some homes and printer services
***************************************************************************/
static void add_auto_printers(void)
{
const struct loadparm_substitution *lp_sub =
loadparm_s3_global_substitution();
const char *p;
int pnum = lp_servicenumber(PRINTERS_NAME);
char *str;
char *saveptr;
char *auto_serv = NULL;
if (pnum < 0)
if (process_registry_service(PRINTERS_NAME))
pnum = lp_servicenumber(PRINTERS_NAME);
if (pnum < 0)
return;
auto_serv = lp_auto_services(talloc_tos(), lp_sub);
str = SMB_STRDUP(auto_serv);
TALLOC_FREE(auto_serv);
if (str == NULL) {
return;
}
for (p = strtok_r(str, LIST_SEP, &saveptr); p;
p = strtok_r(NULL, LIST_SEP, &saveptr)) {
if (lp_servicenumber(p) >= 0)
continue;
if (printer_list_printername_exists(p))
lp_add_printer(p, pnum);
}
SAFE_FREE(str);
}
/***************************************************************************
load automatic printer services from pre-populated pcap cache
***************************************************************************/
void load_printers(void)
{
NTSTATUS status;
if (!pcap_cache_loaded(NULL)) {
return;
}
add_auto_printers();
if (!lp_load_printers()) {
return;
}
/*
* Do not add printers from pcap, if we don't have a [printers] share.
*/
if (lp_servicenumber(PRINTERS_NAME) < 0) {
return;
}
status = printer_list_read_run_fn(lp_add_one_printer, NULL);
if (!NT_STATUS_IS_OK(status)) {
DBG_NOTICE("printer_list_read_run_fn failed: %s\n",
nt_errstr(status));
}
}
bool pcap_cache_loaded(time_t *_last_change)
{
NTSTATUS status;
time_t last;
status = printer_list_get_last_refresh(&last);
if (!NT_STATUS_IS_OK(status)) {
return false;
}
if (_last_change != NULL) {
*_last_change = last;
}
return true;
}