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/*
Unix SMB/CIFS implementation.
Main SMB server routines
Copyright (C) Andrew Tridgell 1992-1998
Copyright (C) Martin Pool 2002
Copyright (C) Jelmer Vernooij 2002-2003
Copyright (C) Volker Lendecke 1993-2007
Copyright (C) Jeremy Allison 1993-2007
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 "smbd/smbd.h"
#include "smbd/globals.h"
#include "nt_printing.h"
#include "printing/pcap.h"
#include "printing/load.h"
#include "auth.h"
#include "messages.h"
#include "lib/param/loadparm.h"
static bool snum_is_shared_printer(int snum)
{
return (lp_browseable(snum) && lp_snum_ok(snum) && lp_print_ok(snum));
}
/**
* @brief Purge stale printers and reload from pre-populated pcap cache.
*
* This function should normally only be called as a callback on a successful
* pcap_cache_reload() or after a MSG_PRINTER_CAP message is received.
*
* This function can cause DELETION of printers and drivers from our registry,
* so calling it on a failed pcap reload may REMOVE permanently all printers
* and drivers.
*
* @param[in] ev The event context.
*
* @param[in] msg_ctx The messaging context.
*/
void delete_and_reload_printers(struct tevent_context *ev,
struct messaging_context *msg_ctx)
{
struct auth_session_info *session_info = NULL;
struct spoolss_PrinterInfo2 *pinfo2 = NULL;
int n_services;
int pnum;
int snum;
const char *pname;
const char *sname;
NTSTATUS status;
/* Get pcap printers updated */
load_printers(ev, msg_ctx);
n_services = lp_numservices();
pnum = lp_servicenumber(PRINTERS_NAME);
DEBUG(10, ("reloading printer services from pcap cache\n"));
status = make_session_info_system(talloc_tos(), &session_info);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(3, ("reload_printers: "
"Could not create system session_info\n"));
/* can't remove stale printers before we
* are fully initilized */
return;
}
/*
* Add default config for printers added to smb.conf file and remove
* stale printers
*/
for (snum = 0; snum < n_services; snum++) {
/* avoid removing PRINTERS_NAME */
if (snum == pnum) {
continue;
}
/* skip no-printer services */
if (!snum_is_shared_printer(snum)) {
continue;
}
sname = lp_const_servicename(snum);
pname = lp_printername(session_info, snum);
/* check printer, but avoid removing non-autoloaded printers */
if (lp_autoloaded(snum) && !pcap_printername_ok(pname)) {
DEBUG(3, ("removing stale printer %s\n", pname));
if (is_printer_published(session_info, session_info,
msg_ctx,
NULL,
lp_servicename(session_info,
snum),
&pinfo2)) {
nt_printer_publish(session_info,
session_info,
msg_ctx,
pinfo2,
DSPRINT_UNPUBLISH);
TALLOC_FREE(pinfo2);
}
nt_printer_remove(session_info, session_info, msg_ctx,
pname);
lp_killservice(snum);
} else {
DEBUG(8, ("Adding default registry entry for printer "
"[%s], if it doesn't exist.\n", sname));
nt_printer_add(session_info, session_info, msg_ctx,
sname);
}
}
/* Make sure deleted printers are gone */
load_printers(ev, msg_ctx);
TALLOC_FREE(session_info);
}
/****************************************************************************
Reload the services file.
**************************************************************************/
bool reload_services(struct smbd_server_connection *sconn,
bool (*snumused) (struct smbd_server_connection *, int),
bool test)
{
bool ret;
if (lp_loaded()) {
char *fname = lp_configfile(talloc_tos());
if (file_exist(fname) &&
!strcsequal(fname, get_dyn_CONFIGFILE())) {
set_dyn_CONFIGFILE(fname);
test = False;
}
TALLOC_FREE(fname);
}
reopen_logs();
if (test && !lp_file_list_changed())
return(True);
lp_killunused(sconn, snumused);
ret = lp_load(get_dyn_CONFIGFILE(),
false, /* global only */
false, /* save defaults */
true, /* add_ipc */
true); /* initialize globals */
/* perhaps the config filename is now set */
if (!test) {
reload_services(sconn, snumused, true);
}
reopen_logs();
load_interfaces();
if (sconn != NULL) {
set_socket_options(sconn->sock, "SO_KEEPALIVE");
set_socket_options(sconn->sock, lp_socket_options());
}
mangle_reset_cache();
reset_stat_cache();
/* this forces service parameters to be flushed */
set_current_service(NULL,0,True);
return(ret);
}
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