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/*
Unix SMB/Netbios implementation.
SPOOLSS Daemon
Copyright (C) Simo Sorce 2010
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 "serverid.h"
#include "smbd/smbd.h"
#include "messages.h"
#include "include/printing.h"
#include "printing/nt_printing_migrate.h"
#include "ntdomain.h"
#include "librpc/gen_ndr/srv_winreg.h"
#include "librpc/gen_ndr/srv_spoolss.h"
#include "rpc_server/rpc_server.h"
#include "rpc_server/rpc_ep_setup.h"
#include "rpc_server/spoolss/srv_spoolss_nt.h"
#define SPOOLSS_PIPE_NAME "spoolss"
#define DAEMON_NAME "spoolssd"
void start_spoolssd(struct tevent_context *ev_ctx,
struct messaging_context *msg_ctx);
static void spoolss_reopen_logs(void)
{
char *lfile = lp_logfile();
int rc;
if (lfile == NULL || lfile[0] == '\0') {
rc = asprintf(&lfile, "%s/log.%s", get_dyn_LOGFILEBASE(), DAEMON_NAME);
if (rc > 0) {
lp_set_logfile(lfile);
SAFE_FREE(lfile);
}
} else {
if (strstr(lfile, DAEMON_NAME) == NULL) {
rc = asprintf(&lfile, "%s.%s", lp_logfile(), DAEMON_NAME);
if (rc > 0) {
lp_set_logfile(lfile);
SAFE_FREE(lfile);
}
}
}
reopen_logs();
}
static void smb_conf_updated(struct messaging_context *msg,
void *private_data,
uint32_t msg_type,
struct server_id server_id,
DATA_BLOB *data)
{
struct tevent_context *ev_ctx = talloc_get_type_abort(private_data,
struct tevent_context);
DEBUG(10, ("Got message saying smb.conf was updated. Reloading.\n"));
change_to_root_user();
reload_printers(ev_ctx, msg);
spoolss_reopen_logs();
}
static void spoolss_sig_term_handler(struct tevent_context *ev,
struct tevent_signal *se,
int signum,
int count,
void *siginfo,
void *private_data)
{
exit_server_cleanly("termination signal");
}
static void spoolss_setup_sig_term_handler(struct tevent_context *ev_ctx)
{
struct tevent_signal *se;
se = tevent_add_signal(ev_ctx,
ev_ctx,
SIGTERM, 0,
spoolss_sig_term_handler,
NULL);
if (!se) {
exit_server("failed to setup SIGTERM handler");
}
}
static void spoolss_sig_hup_handler(struct tevent_context *ev,
struct tevent_signal *se,
int signum,
int count,
void *siginfo,
void *private_data)
{
struct messaging_context *msg_ctx = talloc_get_type_abort(private_data,
struct messaging_context);
change_to_root_user();
DEBUG(1,("Reloading printers after SIGHUP\n"));
reload_printers(ev, msg_ctx);
spoolss_reopen_logs();
}
static void spoolss_setup_sig_hup_handler(struct tevent_context *ev_ctx,
struct messaging_context *msg_ctx)
{
struct tevent_signal *se;
se = tevent_add_signal(ev_ctx,
ev_ctx,
SIGHUP, 0,
spoolss_sig_hup_handler,
msg_ctx);
if (!se) {
exit_server("failed to setup SIGHUP handler");
}
}
static bool spoolss_init_cb(void *ptr)
{
struct messaging_context *msg_ctx = talloc_get_type_abort(
ptr, struct messaging_context);
return nt_printing_tdb_migrate(msg_ctx);
}
static bool spoolss_shutdown_cb(void *ptr)
{
srv_spoolss_cleanup();
return true;
}
void start_spoolssd(struct tevent_context *ev_ctx,
struct messaging_context *msg_ctx)
{
struct rpc_srv_callbacks spoolss_cb;
pid_t pid;
NTSTATUS status;
int ret;
DEBUG(1, ("Forking SPOOLSS Daemon\n"));
pid = sys_fork();
if (pid == -1) {
DEBUG(0, ("Failed to fork SPOOLSS [%s], aborting ...\n",
strerror(errno)));
exit(1);
}
if (pid) {
/* parent */
return;
}
/* child */
close_low_fds(false);
status = reinit_after_fork(msg_ctx,
ev_ctx,
procid_self(), true);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("reinit_after_fork() failed\n"));
smb_panic("reinit_after_fork() failed");
}
spoolss_reopen_logs();
spoolss_setup_sig_term_handler(ev_ctx);
spoolss_setup_sig_hup_handler(ev_ctx, msg_ctx);
if (!serverid_register(procid_self(),
FLAG_MSG_GENERAL|FLAG_MSG_SMBD
|FLAG_MSG_PRINT_GENERAL)) {
exit(1);
}
if (!locking_init()) {
exit(1);
}
messaging_register(msg_ctx, NULL,
MSG_PRINTER_UPDATE, print_queue_receive);
messaging_register(msg_ctx, ev_ctx,
MSG_SMB_CONF_UPDATED, smb_conf_updated);
/*
* Initialize spoolss with an init function to convert printers first.
* static_init_rpc will try to initialize the spoolss server too but you
* can't register it twice.
*/
spoolss_cb.init = spoolss_init_cb;
spoolss_cb.shutdown = spoolss_shutdown_cb;
spoolss_cb.private_data = msg_ctx;
status = rpc_winreg_init(NULL);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Failed to register winreg rpc inteface! (%s)\n",
nt_errstr(status)));
exit(1);
}
status = rpc_spoolss_init(&spoolss_cb);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Failed to register spoolss rpc inteface! (%s)\n",
nt_errstr(status)));
exit(1);
}
if (!setup_named_pipe_socket(SPOOLSS_PIPE_NAME, ev_ctx)) {
exit(1);
}
status = rpc_ep_setup_register(ev_ctx, msg_ctx, &ndr_table_spoolss, NULL, 0);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Failed to register spoolss endpoint! (%s)\n",
nt_errstr(status)));
exit(1);
}
DEBUG(1, ("SPOOLSS Daemon Started (%d)\n", getpid()));
/* loop forever */
ret = tevent_loop_wait(ev_ctx);
/* should not be reached */
DEBUG(0,("background_queue: tevent_loop_wait() exited with %d - %s\n",
ret, (ret == 0) ? "out of events" : strerror(errno)));
exit(1);
}
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