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/*
* Unix SMB/CIFS implementation.
*
* SMBD RPC service callbacks
*
* Copyright (c) 2011 Andreas Schneider <asn@samba.org>
*
* 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 "ntdomain.h"
#include "messages.h"
#include "lib/util/util_process.h"
#include "librpc/rpc/dcerpc_ep.h"
#include "../librpc/gen_ndr/srv_epmapper.h"
#include "rpc_server/rpc_server.h"
#include "rpc_server/rpc_sock_helper.h"
#include "rpc_server/epmapper/srv_epmapper.h"
#define DAEMON_NAME "epmd"
void start_epmd(struct tevent_context *ev_ctx,
struct messaging_context *msg_ctx);
static void epmd_reopen_logs(void)
{
char *lfile = lp_logfile(talloc_tos());
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(talloc_tos()), DAEMON_NAME);
if (rc > 0) {
lp_set_logfile(lfile);
SAFE_FREE(lfile);
}
}
}
reopen_logs();
}
static void epmd_smb_conf_updated(struct messaging_context *msg,
void *private_data,
uint32_t msg_type,
struct server_id server_id,
DATA_BLOB *data)
{
DEBUG(10, ("Got message saying smb.conf was updated. Reloading.\n"));
change_to_root_user();
epmd_reopen_logs();
}
static void epmd_sig_term_handler(struct tevent_context *ev,
struct tevent_signal *se,
int signum,
int count,
void *siginfo,
void *private_data)
{
rpc_epmapper_shutdown();
exit_server_cleanly("termination signal");
}
static void epmd_setup_sig_term_handler(struct tevent_context *ev_ctx)
{
struct tevent_signal *se;
se = tevent_add_signal(ev_ctx,
ev_ctx,
SIGTERM, 0,
epmd_sig_term_handler,
NULL);
if (se == NULL) {
exit_server("failed to setup SIGTERM handler");
}
}
static void epmd_sig_hup_handler(struct tevent_context *ev,
struct tevent_signal *se,
int signum,
int count,
void *siginfo,
void *private_data)
{
change_to_root_user();
DEBUG(1,("Reloading printers after SIGHUP\n"));
epmd_reopen_logs();
}
static void epmd_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,
epmd_sig_hup_handler,
msg_ctx);
if (se == NULL) {
exit_server("failed to setup SIGHUP handler");
}
}
static bool epmapper_shutdown_cb(void *ptr) {
srv_epmapper_cleanup();
return true;
}
void start_epmd(struct tevent_context *ev_ctx,
struct messaging_context *msg_ctx)
{
struct rpc_srv_callbacks epmapper_cb;
NTSTATUS status;
pid_t pid;
bool ok;
int rc;
epmapper_cb.init = NULL;
epmapper_cb.shutdown = epmapper_shutdown_cb;
epmapper_cb.private_data = NULL;
DEBUG(1, ("Forking Endpoint Mapper Daemon\n"));
pid = fork();
if (pid == -1) {
DEBUG(0, ("Failed to fork Endpoint Mapper [%s], aborting ...\n",
strerror(errno)));
exit(1);
}
if (pid) {
/* parent */
return;
}
status = reinit_after_fork(msg_ctx,
ev_ctx,
true);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("reinit_after_fork() failed\n"));
smb_panic("reinit_after_fork() failed");
}
prctl_set_comment("epmd");
epmd_reopen_logs();
epmd_setup_sig_term_handler(ev_ctx);
epmd_setup_sig_hup_handler(ev_ctx, msg_ctx);
ok = serverid_register(messaging_server_id(msg_ctx),
FLAG_MSG_GENERAL |
FLAG_MSG_PRINT_GENERAL);
if (!ok) {
DEBUG(0, ("Failed to register serverid in epmd!\n"));
exit(1);
}
messaging_register(msg_ctx,
ev_ctx,
MSG_SMB_CONF_UPDATED,
epmd_smb_conf_updated);
status = rpc_epmapper_init(&epmapper_cb);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Failed to register epmd rpc inteface! (%s)\n",
nt_errstr(status)));
exit(1);
}
status = rpc_setup_tcpip_sockets(ev_ctx,
msg_ctx,
&ndr_table_epmapper,
NULL,
135);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Failed to open epmd tcpip sockets!\n"));
exit(1);
}
ok = setup_dcerpc_ncalrpc_socket(ev_ctx,
msg_ctx,
"EPMAPPER",
srv_epmapper_delete_endpoints);
if (!ok) {
DEBUG(0, ("Failed to open epmd ncalrpc pipe!\n"));
exit(1);
}
ok = setup_named_pipe_socket("epmapper", ev_ctx, msg_ctx);
if (!ok) {
DEBUG(0, ("Failed to open epmd named pipe!\n"));
exit(1);
}
DEBUG(1, ("Endpoint Mapper Daemon Started (%u)\n", (unsigned int)getpid()));
/* loop forever */
rc = tevent_loop_wait(ev_ctx);
/* should not be reached */
DEBUG(0,("background_queue: tevent_loop_wait() exited with %d - %s\n",
rc, (rc == 0) ? "out of events" : strerror(errno)));
exit(1);
}
/* vim: set ts=8 sw=8 noet cindent ft=c.doxygen: */
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