smbd_door_server.c revision dc20a3024900c47dd2ee44b9707e6df38f7d62a5
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* SMBd door server
*/
#include <door.h>
#include <errno.h>
#include <syslog.h>
#include <unistd.h>
#include <stdio.h>
#include <synch.h>
#include <string.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <pthread.h>
#include <syslog.h>
#include <assert.h>
#include <alloca.h>
#include <smbsrv/libsmb.h>
#include <smbsrv/libsmbns.h>
#include <smbsrv/libsmbrdr.h>
#include <smbsrv/smb_common_door.h>
static int smb_door_fildes = -1;
static mutex_t smb_doorsrv_mutex;
void smb_srv_door(void *, char *, size_t, door_desc_t *, uint_t);
extern uint32_t smbd_join(smb_joininfo_t *);
/*
* smb_doorsrv_start
*
* Start the SMBd door service.
* Returns 0 on success. Otherwise, -1.
*/
int
smb_doorsrv_start()
{
int newfd;
(void) mutex_lock(&smb_doorsrv_mutex);
if (smb_door_fildes != -1) {
syslog(LOG_ERR, "smb_doorsrv_start: duplicate");
(void) mutex_unlock(&smb_doorsrv_mutex);
return (0);
}
if ((smb_door_fildes = door_create(smb_srv_door,
SMBD_DOOR_COOKIE, DOOR_UNREF)) < 0) {
syslog(LOG_ERR, "smb_doorsrv_start: door_create failed %s",
strerror(errno));
(void) mutex_unlock(&smb_doorsrv_mutex);
return (-1);
}
(void) unlink(SMBD_DOOR_NAME);
if ((newfd = creat(SMBD_DOOR_NAME, 0644)) < 0) {
syslog(LOG_ERR, "smb_doorsrv_start: open failed %s",
strerror(errno));
(void) door_revoke(smb_door_fildes);
smb_door_fildes = -1;
(void) mutex_unlock(&smb_doorsrv_mutex);
return (-1);
}
(void) close(newfd);
(void) fdetach(SMBD_DOOR_NAME);
if (fattach(smb_door_fildes, SMBD_DOOR_NAME) < 0) {
syslog(LOG_ERR, "smb_doorsrv_start: fattach failed %s",
strerror(errno));
(void) door_revoke(smb_door_fildes);
smb_door_fildes = -1;
(void) mutex_unlock(&smb_doorsrv_mutex);
return (-1);
}
(void) mutex_unlock(&smb_doorsrv_mutex);
return (0);
}
/*
* smb_doorsrv_stop
*
* Stop the smbd door service.
*/
void
smb_doorsrv_stop(void)
{
(void) mutex_lock(&smb_doorsrv_mutex);
if (smb_door_fildes != -1) {
(void) fdetach(SMBD_DOOR_NAME);
(void) door_revoke(smb_door_fildes);
smb_door_fildes = -1;
}
(void) mutex_unlock(&smb_doorsrv_mutex);
}
/*
* smb_srv_door
*
*/
/*ARGSUSED*/
void
smb_srv_door(void *cookie, char *ptr, size_t size, door_desc_t *dp,
uint_t n_desc)
{
int req_type, rc;
char *buf;
int buflen;
unsigned int used;
smb_dr_ctx_t *dec_ctx;
smb_dr_ctx_t *enc_ctx;
unsigned int dec_status;
unsigned int enc_status;
char *domain;
char *user;
char *passwd;
smb_joininfo_t jdi;
dec_ctx = smb_dr_decode_start(ptr, size);
if (dec_ctx == 0)
return;
req_type = smb_dr_get_uint32(dec_ctx);
buflen = SMBD_DOOR_SIZE;
if ((buf = alloca(buflen)) == NULL) {
syslog(LOG_ERR, "SmbdDoorSrv: resource shortage");
(void) smb_dr_decode_finish(dec_ctx);
return;
}
enc_ctx = smb_dr_encode_start(buf, buflen);
if (enc_ctx == 0) {
syslog(LOG_ERR, "SmbdDoorSrv: encode start failed");
(void) smb_dr_decode_finish(dec_ctx);
return;
}
switch (req_type) {
case SMBD_DOOR_PARAM_GET: {
smb_cfg_id_t id;
char value[MAX_VALUE_BUFLEN];
id = smb_dr_get_uint32(dec_ctx);
dec_status = smb_dr_decode_finish(dec_ctx);
if (dec_status != 0)
goto decode_error;
(void) smb_config_getstr(id, value, sizeof (value));
smb_dr_put_int32(enc_ctx, SMBD_DOOR_SRV_SUCCESS);
smb_dr_put_string(enc_ctx, value);
break;
}
case SMBD_DOOR_PARAM_SET: {
smb_cfg_id_t id;
char *value = NULL;
id = smb_dr_get_uint32(dec_ctx);
value = smb_dr_get_string(dec_ctx);
dec_status = smb_dr_decode_finish(dec_ctx);
if (dec_status != 0) {
smb_dr_free_string(value);
goto decode_error;
}
if (smb_config_setstr(id, value) == SMBD_SMF_OK)
smb_dr_put_int32(enc_ctx, SMBD_DOOR_SRV_SUCCESS);
else
smb_dr_put_int32(enc_ctx, SMBD_DOOR_SRV_ERROR);
smb_dr_free_string(value);
break;
}
case SMBD_DOOR_NETBIOS_RECONFIG: {
smb_netbios_name_reconfig();
smb_dr_put_int32(enc_ctx, SMBD_DOOR_SRV_SUCCESS);
break;
}
case SMBD_DOOR_JOIN:
jdi.mode = smb_dr_get_uint32(dec_ctx);
domain = smb_dr_get_string(dec_ctx);
user = smb_dr_get_string(dec_ctx);
passwd = smb_dr_get_string(dec_ctx);
dec_status = smb_dr_decode_finish(dec_ctx);
if (dec_status != 0 ||
domain == 0 || user == 0 || passwd == 0) {
smb_dr_free_string(domain);
smb_dr_free_string(user);
smb_dr_free_string(passwd);
goto decode_error;
}
(void) strlcpy(jdi.domain_name, domain,
sizeof (jdi.domain_name));
(void) strlcpy(jdi.domain_username, user,
sizeof (jdi.domain_username));
(void) strlcpy(jdi.domain_passwd, passwd,
sizeof (jdi.domain_passwd));
smb_dr_free_string(domain);
smb_dr_free_string(user);
smb_dr_free_string(passwd);
rc = smbd_join(&jdi);
smb_dr_put_int32(enc_ctx, SMBD_DOOR_SRV_SUCCESS);
smb_dr_put_int32(enc_ctx, rc);
break;
default:
goto decode_error;
}
if ((enc_status = smb_dr_encode_finish(enc_ctx, &used)) != 0)
goto encode_error;
(void) door_return(buf, used, NULL, 0);
return;
decode_error:
(void) smb_dr_put_int32(enc_ctx, SMBD_DOOR_SRV_ERROR);
(void) smb_dr_put_uint32(enc_ctx, dec_status);
(void) smb_dr_encode_finish(enc_ctx, &used);
(void) door_return(buf, used, NULL, 0);
return;
encode_error:
enc_ctx = smb_dr_encode_start(buf, buflen);
(void) smb_dr_put_int32(enc_ctx, SMBD_DOOR_SRV_ERROR);
(void) smb_dr_put_uint32(enc_ctx, enc_status);
(void) smb_dr_encode_finish(enc_ctx, &used);
(void) door_return(buf, used, NULL, 0);
}