xref: /illumos-gate/usr/src/lib/smbsrv/libsmb/common/smb_cfg.c (revision 0153d828c132fdb1a17c11b99386a3d1b87994cf)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
23  * Copyright 2020 Tintri by DDN, Inc. All rights reserved.
24  * Copyright 2020 RackTop Systems, Inc.
25  */
26 
27 /*
28  * CIFS configuration management library
29  */
30 
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <unistd.h>
34 #include <synch.h>
35 #include <string.h>
36 #include <strings.h>
37 #include <syslog.h>
38 #include <netdb.h>
39 #include <ctype.h>
40 #include <sys/types.h>
41 #include <libscf.h>
42 #include <assert.h>
43 #include <uuid/uuid.h>
44 #include <smbsrv/libsmb.h>
45 
46 typedef struct smb_cfg_param {
47 	smb_cfg_id_t sc_id;
48 	char *sc_name;
49 	int sc_type;
50 	uint32_t sc_flags;
51 } smb_cfg_param_t;
52 
53 struct str_val {
54 	char *str;
55 	uint32_t val;
56 };
57 
58 /*
59  * config parameter flags
60  */
61 #define	SMB_CF_PROTECTED	0x01
62 #define	SMB_CF_EXEC		0x02
63 
64 /* idmap SMF fmri and Property Group */
65 #define	IDMAP_FMRI_PREFIX		"system/idmap"
66 #define	MACHINE_SID			"machine_sid"
67 #define	MACHINE_UUID			"machine_uuid"
68 #define	IDMAP_DOMAIN			"domain_name"
69 #define	IDMAP_PREF_DC			"preferred_dc"
70 #define	IDMAP_SITE_NAME			"site_name"
71 #define	IDMAP_PG_NAME			"config"
72 
73 #define	SMB_SECMODE_WORKGRP_STR		"workgroup"
74 #define	SMB_SECMODE_DOMAIN_STR		"domain"
75 
76 #define	SMB_ENC_LEN	1024
77 #define	SMB_DEC_LEN	256
78 
79 static char *b64_data =
80 	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
81 
82 static smb_cfg_param_t smb_cfg_table[] =
83 {
84 	{SMB_CI_VERSION, "sv_version", SCF_TYPE_ASTRING, 0},
85 
86 	/* Oplock configuration, Kernel Only */
87 	{SMB_CI_OPLOCK_ENABLE, "oplock_enable", SCF_TYPE_BOOLEAN, 0},
88 
89 	/* Autohome configuration */
90 	{SMB_CI_AUTOHOME_MAP, "autohome_map", SCF_TYPE_ASTRING, 0},
91 
92 	/* Domain/PDC configuration */
93 	{SMB_CI_DOMAIN_SID, "domain_sid", SCF_TYPE_ASTRING, 0},
94 	{SMB_CI_DOMAIN_MEMB, "domain_member", SCF_TYPE_BOOLEAN, 0},
95 	{SMB_CI_DOMAIN_NAME, "domain_name", SCF_TYPE_ASTRING, 0},
96 	{SMB_CI_DOMAIN_FQDN, "fqdn", SCF_TYPE_ASTRING, 0},
97 	{SMB_CI_DOMAIN_FOREST, "forest", SCF_TYPE_ASTRING, 0},
98 	{SMB_CI_DOMAIN_GUID, "domain_guid", SCF_TYPE_ASTRING, 0},
99 	{SMB_CI_DOMAIN_SRV, "pdc", SCF_TYPE_ASTRING, 0},
100 
101 	/* WINS configuration */
102 	{SMB_CI_WINS_SRV1, "wins_server_1", SCF_TYPE_ASTRING, 0},
103 	{SMB_CI_WINS_SRV2, "wins_server_2", SCF_TYPE_ASTRING, 0},
104 	{SMB_CI_WINS_EXCL, "wins_exclude", SCF_TYPE_ASTRING, 0},
105 
106 	/* Kmod specific configuration */
107 	{SMB_CI_MAX_WORKERS, "max_workers", SCF_TYPE_INTEGER, 0},
108 	{SMB_CI_MAX_CONNECTIONS, "max_connections", SCF_TYPE_INTEGER, 0},
109 	{SMB_CI_KEEPALIVE, "keep_alive", SCF_TYPE_INTEGER, 0},
110 	{SMB_CI_RESTRICT_ANON, "restrict_anonymous", SCF_TYPE_BOOLEAN, 0},
111 
112 	{SMB_CI_SIGNING_ENABLE, "signing_enabled", SCF_TYPE_BOOLEAN, 0},
113 	{SMB_CI_SIGNING_REQD, "signing_required", SCF_TYPE_BOOLEAN, 0},
114 
115 	/* Kmod tuning configuration */
116 	{SMB_CI_SYNC_ENABLE, "sync_enable", SCF_TYPE_BOOLEAN, 0},
117 
118 	/* SMBd configuration */
119 	{SMB_CI_SECURITY, "security", SCF_TYPE_ASTRING, 0},
120 	{SMB_CI_NETBIOS_ENABLE, "netbios_enable", SCF_TYPE_BOOLEAN, 0},
121 	{SMB_CI_NBSCOPE, "netbios_scope", SCF_TYPE_ASTRING, 0},
122 	{SMB_CI_SYS_CMNT, "system_comment", SCF_TYPE_ASTRING, 0},
123 	{SMB_CI_LM_LEVEL, "lmauth_level", SCF_TYPE_INTEGER, 0},
124 
125 	/* ADS Configuration */
126 	{SMB_CI_ADS_SITE, "ads_site", SCF_TYPE_ASTRING, 0},
127 
128 	/* Dynamic DNS */
129 	{SMB_CI_DYNDNS_ENABLE, "ddns_enable", SCF_TYPE_BOOLEAN, 0},
130 
131 	{SMB_CI_MACHINE_PASSWD, "machine_passwd", SCF_TYPE_ASTRING,
132 	    SMB_CF_PROTECTED},
133 
134 	{SMB_CI_MACHINE_UUID, "machine_uuid", SCF_TYPE_ASTRING, 0},
135 	{SMB_CI_KPASSWD_SRV, "kpasswd_server", SCF_TYPE_ASTRING, 0},
136 	{SMB_CI_KPASSWD_DOMAIN, "kpasswd_domain", SCF_TYPE_ASTRING, 0},
137 	{SMB_CI_KPASSWD_SEQNUM, "kpasswd_seqnum", SCF_TYPE_INTEGER, 0},
138 	{SMB_CI_NETLOGON_SEQNUM, "netlogon_seqnum", SCF_TYPE_INTEGER, 0},
139 	{SMB_CI_IPV6_ENABLE, "ipv6_enable", SCF_TYPE_BOOLEAN, 0},
140 	{SMB_CI_PRINT_ENABLE, "print_enable", SCF_TYPE_BOOLEAN, 0},
141 	{SMB_CI_MAP, "map", SCF_TYPE_ASTRING, SMB_CF_EXEC},
142 	{SMB_CI_UNMAP, "unmap", SCF_TYPE_ASTRING, SMB_CF_EXEC},
143 	{SMB_CI_DISPOSITION, "disposition", SCF_TYPE_ASTRING, SMB_CF_EXEC},
144 	{SMB_CI_DFS_STDROOT_NUM, "dfs_stdroot_num", SCF_TYPE_INTEGER, 0},
145 	{SMB_CI_TRAVERSE_MOUNTS, "traverse_mounts", SCF_TYPE_BOOLEAN, 0},
146 	{SMB_CI_SMB2_ENABLE_OLD, "smb2_enable", SCF_TYPE_BOOLEAN, 0},
147 	{SMB_CI_INITIAL_CREDITS, "initial_credits", SCF_TYPE_INTEGER, 0},
148 	{SMB_CI_MAXIMUM_CREDITS, "maximum_credits", SCF_TYPE_INTEGER, 0},
149 	{SMB_CI_MAX_PROTOCOL, "max_protocol", SCF_TYPE_ASTRING, 0},
150 	{SMB_CI_ENCRYPT, "encrypt", SCF_TYPE_ASTRING, 0},
151 	{SMB_CI_MIN_PROTOCOL, "min_protocol", SCF_TYPE_ASTRING, 0},
152 	{SMB_CI_BYPASS_TRAVERSE_CHECKING,
153 	    "bypass_traverse_checking", SCF_TYPE_BOOLEAN, 0},
154 	{SMB_CI_ENCRYPT_CIPHER, "encrypt_cipher", SCF_TYPE_ASTRING, 0},
155 	{SMB_CI_NETLOGON_FLAGS, "netlogon_flags", SCF_TYPE_INTEGER, 0},
156 
157 	/* SMB_CI_MAX */
158 };
159 
160 /*
161  * We store the max SMB protocol version in SMF as a string,
162  * (for convenience of svccfg etc) but the programmatic get/set
163  * interfaces use the numeric form.
164  *
165  * The numeric values are as defined in the [MS-SMB2] spec.
166  * except for how we represent "1" (for SMB1) which is an
167  * arbitrary value below SMB2_VERS_BASE.
168  */
169 static struct str_val
170 smb_versions[] = {
171 	{ "3.11",	SMB_VERS_3_11 },
172 	{ "3.02",	SMB_VERS_3_02 },
173 	{ "3.0",	SMB_VERS_3_0 },
174 	{ "2.1",	SMB_VERS_2_1 },
175 	{ "2.002",	SMB_VERS_2_002 },
176 	{ "1",		SMB_VERS_1 },
177 	{ NULL,		0 }
178 };
179 
180 /*
181  * Supported encryption ciphers.
182  */
183 static struct str_val
184 smb31_encrypt_ciphers[] = {
185 	{ "aes128-ccm",	SMB3_CIPHER_AES128_CCM },	/* SMB 3.x */
186 	{ "aes128-gcm",	SMB3_CIPHER_AES128_GCM },	/* SMB 3.1.1 */
187 	{ NULL,		0 }
188 };
189 
190 static smb_cfg_param_t *smb_config_getent(smb_cfg_id_t);
191 
192 static boolean_t smb_is_base64(unsigned char c);
193 static char *smb_base64_encode(char *str_to_encode);
194 static char *smb_base64_decode(char *encoded_str);
195 static int smb_config_get_idmap_preferred_dc(char *, int);
196 static int smb_config_set_idmap_preferred_dc(char *);
197 static int smb_config_get_idmap_site_name(char *, int);
198 static int smb_config_set_idmap_site_name(char *);
199 
200 static uint32_t
201 smb_convert_version_str(const char *version)
202 {
203 	uint32_t dialect = 0;
204 	int i;
205 
206 	for (i = 0; smb_versions[i].str != NULL; i++) {
207 		if (strcmp(version, smb_versions[i].str) == 0)
208 			dialect = smb_versions[i].val;
209 	}
210 
211 	return (dialect);
212 }
213 
214 char *
215 smb_config_getname(smb_cfg_id_t id)
216 {
217 	smb_cfg_param_t *cfg;
218 	cfg = smb_config_getent(id);
219 	return (cfg->sc_name);
220 }
221 
222 static boolean_t
223 smb_is_base64(unsigned char c)
224 {
225 	return (isalnum(c) || (c == '+') || (c == '/'));
226 }
227 
228 /*
229  * smb_base64_encode
230  *
231  * Encode a string using base64 algorithm.
232  * Caller should free the returned buffer when done.
233  */
234 static char *
235 smb_base64_encode(char *str_to_encode)
236 {
237 	int ret_cnt = 0;
238 	int i = 0, j = 0;
239 	char arr_3[3], arr_4[4];
240 	int len = strlen(str_to_encode);
241 	char *ret = malloc(SMB_ENC_LEN);
242 
243 	if (ret == NULL) {
244 		return (NULL);
245 	}
246 
247 	while (len--) {
248 		arr_3[i++] = *(str_to_encode++);
249 		if (i == 3) {
250 			arr_4[0] = (arr_3[0] & 0xfc) >> 2;
251 			arr_4[1] = ((arr_3[0] & 0x03) << 4) +
252 			    ((arr_3[1] & 0xf0) >> 4);
253 			arr_4[2] = ((arr_3[1] & 0x0f) << 2) +
254 			    ((arr_3[2] & 0xc0) >> 6);
255 			arr_4[3] = arr_3[2] & 0x3f;
256 
257 			for (i = 0; i < 4; i++)
258 				ret[ret_cnt++] = b64_data[arr_4[i]];
259 			i = 0;
260 		}
261 	}
262 
263 	if (i) {
264 		for (j = i; j < 3; j++)
265 			arr_3[j] = '\0';
266 
267 		arr_4[0] = (arr_3[0] & 0xfc) >> 2;
268 		arr_4[1] = ((arr_3[0] & 0x03) << 4) +
269 		    ((arr_3[1] & 0xf0) >> 4);
270 		arr_4[2] = ((arr_3[1] & 0x0f) << 2) +
271 		    ((arr_3[2] & 0xc0) >> 6);
272 		arr_4[3] = arr_3[2] & 0x3f;
273 
274 		for (j = 0; j < (i + 1); j++)
275 			ret[ret_cnt++] = b64_data[arr_4[j]];
276 
277 		while (i++ < 3)
278 			ret[ret_cnt++] = '=';
279 	}
280 
281 	ret[ret_cnt++] = '\0';
282 	return (ret);
283 }
284 
285 /*
286  * smb_base64_decode
287  *
288  * Decode using base64 algorithm.
289  * Caller should free the returned buffer when done.
290  */
291 static char *
292 smb_base64_decode(char *encoded_str)
293 {
294 	int len = strlen(encoded_str);
295 	int i = 0, j = 0;
296 	int en_ind = 0;
297 	char arr_4[4], arr_3[3];
298 	int ret_cnt = 0;
299 	char *ret = malloc(SMB_DEC_LEN);
300 	char *p;
301 
302 	if (ret == NULL) {
303 		return (NULL);
304 	}
305 
306 	while (len-- && (encoded_str[en_ind] != '=') &&
307 	    smb_is_base64(encoded_str[en_ind])) {
308 		arr_4[i++] = encoded_str[en_ind];
309 		en_ind++;
310 		if (i == 4) {
311 			for (i = 0; i < 4; i++) {
312 				if ((p = strchr(b64_data, arr_4[i])) == NULL)
313 					return (NULL);
314 
315 				arr_4[i] = (int)(p - b64_data);
316 			}
317 
318 			arr_3[0] = (arr_4[0] << 2) +
319 			    ((arr_4[1] & 0x30) >> 4);
320 			arr_3[1] = ((arr_4[1] & 0xf) << 4) +
321 			    ((arr_4[2] & 0x3c) >> 2);
322 			arr_3[2] = ((arr_4[2] & 0x3) << 6) +
323 			    arr_4[3];
324 
325 			for (i = 0; i < 3; i++)
326 				ret[ret_cnt++] = arr_3[i];
327 
328 			i = 0;
329 		}
330 	}
331 
332 	if (i) {
333 		for (j = i; j < 4; j++)
334 			arr_4[j] = 0;
335 
336 		for (j = 0; j < 4; j++) {
337 			if ((p = strchr(b64_data, arr_4[j])) == NULL)
338 				return (NULL);
339 
340 			arr_4[j] = (int)(p - b64_data);
341 		}
342 		arr_3[0] = (arr_4[0] << 2) +
343 		    ((arr_4[1] & 0x30) >> 4);
344 		arr_3[1] = ((arr_4[1] & 0xf) << 4) +
345 		    ((arr_4[2] & 0x3c) >> 2);
346 		arr_3[2] = ((arr_4[2] & 0x3) << 6) +
347 		    arr_4[3];
348 		for (j = 0; j < (i - 1); j++)
349 			ret[ret_cnt++] = arr_3[j];
350 	}
351 
352 	ret[ret_cnt++] = '\0';
353 	return (ret);
354 }
355 
356 static char *
357 smb_config_getenv_generic(char *name, char *svc_fmri_prefix, char *svc_propgrp)
358 {
359 	smb_scfhandle_t *handle;
360 	char *value;
361 
362 	if ((value = malloc(MAX_VALUE_BUFLEN * sizeof (char))) == NULL)
363 		return (NULL);
364 
365 	handle = smb_smf_scf_init(svc_fmri_prefix);
366 	if (handle == NULL) {
367 		free(value);
368 		return (NULL);
369 	}
370 
371 	(void) smb_smf_create_service_pgroup(handle, svc_propgrp);
372 
373 	if (smb_smf_get_string_property(handle, name, value,
374 	    sizeof (char) * MAX_VALUE_BUFLEN) != 0) {
375 		smb_smf_scf_fini(handle);
376 		free(value);
377 		return (NULL);
378 	}
379 
380 	smb_smf_scf_fini(handle);
381 	return (value);
382 
383 }
384 
385 static int
386 smb_config_setenv_generic(char *svc_fmri_prefix, char *svc_propgrp,
387     char *name, char *value)
388 {
389 	smb_scfhandle_t *handle = NULL;
390 	int rc = 0;
391 
392 
393 	handle = smb_smf_scf_init(svc_fmri_prefix);
394 	if (handle == NULL) {
395 		return (1);
396 	}
397 
398 	(void) smb_smf_create_service_pgroup(handle, svc_propgrp);
399 
400 	if (smb_smf_start_transaction(handle) != SMBD_SMF_OK) {
401 		smb_smf_scf_fini(handle);
402 		return (1);
403 	}
404 
405 	if (smb_smf_set_string_property(handle, name, value) != SMBD_SMF_OK)
406 		rc = 1;
407 
408 	if (smb_smf_end_transaction(handle) != SMBD_SMF_OK)
409 		rc = 1;
410 
411 	smb_smf_scf_fini(handle);
412 	return (rc);
413 }
414 
415 /*
416  * smb_config_getstr
417  *
418  * Fetch the specified string configuration item from SMF
419  */
420 int
421 smb_config_getstr(smb_cfg_id_t id, char *cbuf, int bufsz)
422 {
423 	smb_scfhandle_t *handle;
424 	smb_cfg_param_t *cfg;
425 	int rc = SMBD_SMF_OK;
426 	char *pg;
427 	char protbuf[SMB_ENC_LEN];
428 	char *tmp;
429 
430 	*cbuf = '\0';
431 	cfg = smb_config_getent(id);
432 	assert(cfg->sc_type == SCF_TYPE_ASTRING);
433 
434 	if (id == SMB_CI_ADS_SITE)
435 		return (smb_config_get_idmap_site_name(cbuf, bufsz));
436 	if (id == SMB_CI_DOMAIN_SRV)
437 		return (smb_config_get_idmap_preferred_dc(cbuf, bufsz));
438 
439 	handle = smb_smf_scf_init(SMBD_FMRI_PREFIX);
440 	if (handle == NULL)
441 		return (SMBD_SMF_SYSTEM_ERR);
442 
443 	if (cfg->sc_flags & SMB_CF_PROTECTED) {
444 		if ((rc = smb_smf_create_service_pgroup(handle,
445 		    SMBD_PROTECTED_PG_NAME)) != SMBD_SMF_OK)
446 			goto error;
447 
448 		if ((rc = smb_smf_get_string_property(handle, cfg->sc_name,
449 		    protbuf, sizeof (protbuf))) != SMBD_SMF_OK)
450 			goto error;
451 
452 		if (*protbuf != '\0') {
453 			tmp = smb_base64_decode(protbuf);
454 			(void) strlcpy(cbuf, tmp, bufsz);
455 			free(tmp);
456 		}
457 	} else {
458 		pg = (cfg->sc_flags & SMB_CF_EXEC) ? SMBD_EXEC_PG_NAME :
459 		    SMBD_PG_NAME;
460 		rc = smb_smf_create_service_pgroup(handle, pg);
461 		if (rc == SMBD_SMF_OK)
462 			rc = smb_smf_get_string_property(handle, cfg->sc_name,
463 			    cbuf, bufsz);
464 	}
465 
466 error:
467 	smb_smf_scf_fini(handle);
468 	return (rc);
469 }
470 
471 /*
472  * Translate the value of an astring SMF property into a binary
473  * IP address. If the value is neither a valid IPv4 nor IPv6
474  * address, attempt to look it up as a hostname using the
475  * configured address type.
476  */
477 int
478 smb_config_getip(smb_cfg_id_t sc_id, smb_inaddr_t *ipaddr)
479 {
480 	int rc, error;
481 	int a_family;
482 	char ipstr[MAXHOSTNAMELEN];
483 	struct hostent *h;
484 	smb_cfg_param_t *cfg;
485 
486 	if (ipaddr == NULL)
487 		return (SMBD_SMF_INVALID_ARG);
488 
489 	bzero(ipaddr, sizeof (smb_inaddr_t));
490 	rc = smb_config_getstr(sc_id, ipstr, sizeof (ipstr));
491 	if (rc == SMBD_SMF_OK) {
492 		if (*ipstr == '\0')
493 			return (SMBD_SMF_INVALID_ARG);
494 
495 		if (inet_pton(AF_INET, ipstr, &ipaddr->a_ipv4) == 1) {
496 			ipaddr->a_family = AF_INET;
497 			return (SMBD_SMF_OK);
498 		}
499 
500 		if (inet_pton(AF_INET6, ipstr, &ipaddr->a_ipv6) == 1) {
501 			ipaddr->a_family = AF_INET6;
502 			return (SMBD_SMF_OK);
503 		}
504 
505 		/*
506 		 * The value is neither an IPv4 nor IPv6 address;
507 		 * so check if it's a hostname.
508 		 */
509 		a_family = smb_config_getbool(SMB_CI_IPV6_ENABLE) ?
510 		    AF_INET6 : AF_INET;
511 		h = getipnodebyname(ipstr, a_family, AI_DEFAULT,
512 		    &error);
513 		if (h != NULL) {
514 			bcopy(*(h->h_addr_list), &ipaddr->a_ip,
515 			    h->h_length);
516 			ipaddr->a_family = a_family;
517 			freehostent(h);
518 			rc = SMBD_SMF_OK;
519 		} else {
520 			cfg = smb_config_getent(sc_id);
521 			syslog(LOG_ERR, "smbd/%s: %s unable to get %s "
522 			    "address: %d", cfg->sc_name, ipstr,
523 			    a_family == AF_INET ?  "IPv4" : "IPv6", error);
524 			rc = SMBD_SMF_INVALID_ARG;
525 		}
526 	}
527 
528 	return (rc);
529 }
530 
531 /*
532  * smb_config_getnum
533  *
534  * Returns the value of a numeric config param.
535  */
536 int
537 smb_config_getnum(smb_cfg_id_t id, int64_t *cint)
538 {
539 	smb_scfhandle_t *handle;
540 	smb_cfg_param_t *cfg;
541 	int rc = SMBD_SMF_OK;
542 
543 	*cint = 0;
544 	cfg = smb_config_getent(id);
545 	assert(cfg->sc_type == SCF_TYPE_INTEGER);
546 
547 	handle = smb_smf_scf_init(SMBD_FMRI_PREFIX);
548 	if (handle == NULL)
549 		return (SMBD_SMF_SYSTEM_ERR);
550 
551 	rc = smb_smf_create_service_pgroup(handle, SMBD_PG_NAME);
552 	if (rc == SMBD_SMF_OK)
553 		rc = smb_smf_get_integer_property(handle, cfg->sc_name, cint);
554 	smb_smf_scf_fini(handle);
555 
556 	return (rc);
557 }
558 
559 /*
560  * smb_config_getbool
561  *
562  * Returns the value of a boolean config param.
563  */
564 boolean_t
565 smb_config_getbool(smb_cfg_id_t id)
566 {
567 	smb_scfhandle_t *handle;
568 	smb_cfg_param_t *cfg;
569 	int rc = SMBD_SMF_OK;
570 	uint8_t vbool;
571 
572 	cfg = smb_config_getent(id);
573 	assert(cfg->sc_type == SCF_TYPE_BOOLEAN);
574 
575 	handle = smb_smf_scf_init(SMBD_FMRI_PREFIX);
576 	if (handle == NULL)
577 		return (B_FALSE);
578 
579 	rc = smb_smf_create_service_pgroup(handle, SMBD_PG_NAME);
580 	if (rc == SMBD_SMF_OK)
581 		rc = smb_smf_get_boolean_property(handle, cfg->sc_name, &vbool);
582 	smb_smf_scf_fini(handle);
583 
584 	return ((rc == SMBD_SMF_OK) ? (vbool == 1) : B_FALSE);
585 }
586 
587 /*
588  * smb_config_get
589  *
590  * This function returns the value of the requested config
591  * iterm regardless of its type in string format. This should
592  * be used when the config item type is not known by the caller.
593  */
594 int
595 smb_config_get(smb_cfg_id_t id, char *cbuf, int bufsz)
596 {
597 	smb_cfg_param_t *cfg;
598 	int64_t cint;
599 	int rc;
600 
601 	cfg = smb_config_getent(id);
602 	switch (cfg->sc_type) {
603 	case SCF_TYPE_ASTRING:
604 		return (smb_config_getstr(id, cbuf, bufsz));
605 
606 	case SCF_TYPE_INTEGER:
607 		rc = smb_config_getnum(id, &cint);
608 		if (rc == SMBD_SMF_OK)
609 			(void) snprintf(cbuf, bufsz, "%lld", cint);
610 		return (rc);
611 
612 	case SCF_TYPE_BOOLEAN:
613 		if (smb_config_getbool(id))
614 			(void) strlcpy(cbuf, "true", bufsz);
615 		else
616 			(void) strlcpy(cbuf, "false", bufsz);
617 		return (SMBD_SMF_OK);
618 	}
619 
620 	return (SMBD_SMF_INVALID_ARG);
621 }
622 
623 /*
624  * smb_config_setstr
625  *
626  * Set the specified config param with the given
627  * value.
628  */
629 int
630 smb_config_setstr(smb_cfg_id_t id, char *value)
631 {
632 	smb_scfhandle_t *handle;
633 	smb_cfg_param_t *cfg;
634 	int rc = SMBD_SMF_OK;
635 	boolean_t protected;
636 	char *tmp = NULL;
637 	char *pg;
638 
639 	cfg = smb_config_getent(id);
640 	assert(cfg->sc_type == SCF_TYPE_ASTRING);
641 
642 	if (id == SMB_CI_ADS_SITE)
643 		return (smb_config_set_idmap_site_name(value));
644 	if (id == SMB_CI_DOMAIN_SRV)
645 		return (smb_config_set_idmap_preferred_dc(value));
646 
647 	protected = B_FALSE;
648 
649 	switch (cfg->sc_flags) {
650 	case SMB_CF_PROTECTED:
651 		protected = B_TRUE;
652 		pg = SMBD_PROTECTED_PG_NAME;
653 		break;
654 	case SMB_CF_EXEC:
655 		pg = SMBD_EXEC_PG_NAME;
656 		break;
657 	default:
658 		pg = SMBD_PG_NAME;
659 		break;
660 	}
661 
662 	handle = smb_smf_scf_init(SMBD_FMRI_PREFIX);
663 	if (handle == NULL)
664 		return (SMBD_SMF_SYSTEM_ERR);
665 
666 	rc = smb_smf_create_service_pgroup(handle, pg);
667 	if (rc == SMBD_SMF_OK)
668 		rc = smb_smf_start_transaction(handle);
669 
670 	if (rc != SMBD_SMF_OK) {
671 		smb_smf_scf_fini(handle);
672 		return (rc);
673 	}
674 
675 	if (protected && value && (*value != '\0')) {
676 		if ((tmp = smb_base64_encode(value)) == NULL) {
677 			(void) smb_smf_end_transaction(handle);
678 			smb_smf_scf_fini(handle);
679 			return (SMBD_SMF_NO_MEMORY);
680 		}
681 
682 		value = tmp;
683 	}
684 
685 	/*
686 	 * We don't want people who care enough about protecting their data
687 	 * by requiring encryption to accidentally expose their data
688 	 * by lowering the protocol, so prevent them from going below 3.0
689 	 * if encryption is required.
690 	 * Also, ensure that max_protocol >= min_protocol.
691 	 */
692 	if (id == SMB_CI_MAX_PROTOCOL) {
693 		smb_cfg_val_t encrypt;
694 		uint32_t min;
695 		uint32_t val;
696 
697 		encrypt = smb_config_get_require(SMB_CI_ENCRYPT);
698 		min = smb_config_get_min_protocol();
699 		val = smb_convert_version_str(value);
700 
701 		if (encrypt == SMB_CONFIG_REQUIRED &&
702 		    val < SMB_VERS_3_0) {
703 			syslog(LOG_ERR, "Cannot set smbd/max_protocol below 3.0"
704 			    " while smbd/encrypt == required.");
705 			rc = SMBD_SMF_INVALID_ARG;
706 		} else if (val < min) {
707 			syslog(LOG_ERR, "Cannot set smbd/max_protocol to less"
708 			    " than smbd/min_protocol.");
709 			rc = SMBD_SMF_INVALID_ARG;
710 		}
711 	} else if (id == SMB_CI_MIN_PROTOCOL) {
712 		uint32_t max;
713 		uint32_t val;
714 
715 		max = smb_config_get_max_protocol();
716 		val = smb_convert_version_str(value);
717 
718 		if (val > max) {
719 			syslog(LOG_ERR, "Cannot set smbd/min_protocol to more"
720 			    " than smbd/max_protocol.");
721 			rc = SMBD_SMF_INVALID_ARG;
722 		}
723 	}
724 
725 	if (rc == SMBD_SMF_OK) {
726 		rc = smb_smf_set_string_property(handle, cfg->sc_name, value);
727 	}
728 
729 	free(tmp);
730 	(void) smb_smf_end_transaction(handle);
731 	smb_smf_scf_fini(handle);
732 	return (rc);
733 }
734 
735 /*
736  * smb_config_setnum
737  *
738  * Sets a numeric configuration iterm
739  */
740 int
741 smb_config_setnum(smb_cfg_id_t id, int64_t value)
742 {
743 	smb_scfhandle_t *handle;
744 	smb_cfg_param_t *cfg;
745 	int rc = SMBD_SMF_OK;
746 
747 	cfg = smb_config_getent(id);
748 	assert(cfg->sc_type == SCF_TYPE_INTEGER);
749 
750 	handle = smb_smf_scf_init(SMBD_FMRI_PREFIX);
751 	if (handle == NULL)
752 		return (SMBD_SMF_SYSTEM_ERR);
753 
754 	rc = smb_smf_create_service_pgroup(handle, SMBD_PG_NAME);
755 	if (rc == SMBD_SMF_OK)
756 		rc = smb_smf_start_transaction(handle);
757 
758 	if (rc != SMBD_SMF_OK) {
759 		smb_smf_scf_fini(handle);
760 		return (rc);
761 	}
762 
763 	rc = smb_smf_set_integer_property(handle, cfg->sc_name, value);
764 
765 	(void) smb_smf_end_transaction(handle);
766 	smb_smf_scf_fini(handle);
767 	return (rc);
768 }
769 
770 /*
771  * smb_config_setbool
772  *
773  * Sets a boolean configuration iterm
774  */
775 int
776 smb_config_setbool(smb_cfg_id_t id, boolean_t value)
777 {
778 	smb_scfhandle_t *handle;
779 	smb_cfg_param_t *cfg;
780 	int rc = SMBD_SMF_OK;
781 
782 	cfg = smb_config_getent(id);
783 	assert(cfg->sc_type == SCF_TYPE_BOOLEAN);
784 
785 	handle = smb_smf_scf_init(SMBD_FMRI_PREFIX);
786 	if (handle == NULL)
787 		return (SMBD_SMF_SYSTEM_ERR);
788 
789 	rc = smb_smf_create_service_pgroup(handle, SMBD_PG_NAME);
790 	if (rc == SMBD_SMF_OK)
791 		rc = smb_smf_start_transaction(handle);
792 
793 	if (rc != SMBD_SMF_OK) {
794 		smb_smf_scf_fini(handle);
795 		return (rc);
796 	}
797 
798 	rc = smb_smf_set_boolean_property(handle, cfg->sc_name, value);
799 
800 	(void) smb_smf_end_transaction(handle);
801 	smb_smf_scf_fini(handle);
802 	return (rc);
803 }
804 
805 /*
806  * smb_config_set
807  *
808  * This function sets the value of the specified config
809  * iterm regardless of its type in string format. This should
810  * be used when the config item type is not known by the caller.
811  */
812 int
813 smb_config_set(smb_cfg_id_t id, char *value)
814 {
815 	smb_cfg_param_t *cfg;
816 	int64_t cint;
817 
818 	cfg = smb_config_getent(id);
819 	switch (cfg->sc_type) {
820 	case SCF_TYPE_ASTRING:
821 		return (smb_config_setstr(id, value));
822 
823 	case SCF_TYPE_INTEGER:
824 		cint = atoi(value);
825 		return (smb_config_setnum(id, cint));
826 
827 	case SCF_TYPE_BOOLEAN:
828 		return (smb_config_setbool(id, strcasecmp(value, "true") == 0));
829 	}
830 
831 	return (SMBD_SMF_INVALID_ARG);
832 }
833 
834 int
835 smb_config_get_debug()
836 {
837 	int64_t val64;
838 	int val = 0;	/* default */
839 	smb_scfhandle_t *handle = NULL;
840 
841 	handle = smb_smf_scf_init(SMBD_FMRI_PREFIX);
842 	if (handle == NULL) {
843 		return (val);
844 	}
845 
846 	if (smb_smf_create_service_pgroup(handle,
847 	    SMBD_PG_NAME) != SMBD_SMF_OK) {
848 		smb_smf_scf_fini(handle);
849 		return (val);
850 	}
851 
852 	if (smb_smf_get_integer_property(handle, "debug", &val64) != 0) {
853 		smb_smf_scf_fini(handle);
854 		return (val);
855 	}
856 	val = (int)val64;
857 
858 	smb_smf_scf_fini(handle);
859 
860 	return (val);
861 }
862 
863 uint8_t
864 smb_config_get_fg_flag()
865 {
866 	uint8_t run_fg = 0; /* Default is to run in daemon mode */
867 	smb_scfhandle_t *handle = NULL;
868 
869 	handle = smb_smf_scf_init(SMBD_FMRI_PREFIX);
870 	if (handle == NULL) {
871 		return (run_fg);
872 	}
873 
874 	if (smb_smf_create_service_pgroup(handle,
875 	    SMBD_PG_NAME) != SMBD_SMF_OK) {
876 		smb_smf_scf_fini(handle);
877 		return (run_fg);
878 	}
879 
880 	if (smb_smf_get_boolean_property(handle, "run_fg", &run_fg) != 0) {
881 		smb_smf_scf_fini(handle);
882 		return (run_fg);
883 	}
884 
885 	smb_smf_scf_fini(handle);
886 
887 	return (run_fg);
888 }
889 
890 /*
891  * smb_config_get_ads_enable
892  *
893  * Returns value of the "config/use_ads" parameter
894  * from the IDMAP SMF configuration repository.
895  *
896  */
897 boolean_t
898 smb_config_get_ads_enable(void)
899 {
900 	smb_scfhandle_t *handle = NULL;
901 	uint8_t vbool;
902 	int rc = 0;
903 
904 	handle = smb_smf_scf_init(IDMAP_FMRI_PREFIX);
905 	if (handle == NULL)
906 		return (B_FALSE);
907 
908 	rc = smb_smf_create_service_pgroup(handle, IDMAP_PG_NAME);
909 	if (rc == SMBD_SMF_OK)
910 		rc = smb_smf_get_boolean_property(handle, "use_ads", &vbool);
911 	smb_smf_scf_fini(handle);
912 
913 	return ((rc == SMBD_SMF_OK) ? (vbool == 1) : B_TRUE);
914 }
915 
916 /*
917  * smb_config_get_localsid
918  *
919  * Returns value of the "config/machine_sid" parameter
920  * from the IDMAP SMF configuration repository.
921  * Result is allocated; caller should free.
922  */
923 char *
924 smb_config_get_localsid(void)
925 {
926 	return (smb_config_getenv_generic(MACHINE_SID, IDMAP_FMRI_PREFIX,
927 	    IDMAP_PG_NAME));
928 }
929 
930 /*
931  * smb_config_get_localuuid
932  *
933  * Returns value of the "config/machine_uuid" parameter
934  * from the IDMAP SMF configuration repository.
935  *
936  */
937 int
938 smb_config_get_localuuid(uuid_t uu)
939 {
940 	char *s;
941 
942 	uuid_clear(uu);
943 	s = smb_config_getenv_generic(MACHINE_UUID, IDMAP_FMRI_PREFIX,
944 	    IDMAP_PG_NAME);
945 	if (s == NULL)
946 		return (-1);
947 
948 	if (uuid_parse(s, uu) < 0) {
949 		free(s);
950 		return (-1);
951 	}
952 
953 	return (0);
954 }
955 
956 static int
957 smb_config_get_idmap_preferred_dc(char *cbuf, int bufsz)
958 {
959 	char *s;
960 	int len, rc = -1;
961 
962 	s = smb_config_getenv_generic(IDMAP_PREF_DC,
963 	    IDMAP_FMRI_PREFIX, IDMAP_PG_NAME);
964 	if (s != NULL) {
965 		len = strlcpy(cbuf, s, bufsz);
966 		if (len < bufsz)
967 			rc = 0;
968 		free(s);
969 	}
970 	return (rc);
971 }
972 
973 static int
974 smb_config_set_idmap_preferred_dc(char *value)
975 {
976 	return (smb_config_setenv_generic(IDMAP_FMRI_PREFIX, IDMAP_PG_NAME,
977 	    IDMAP_PREF_DC, value));
978 }
979 
980 static int
981 smb_config_get_idmap_site_name(char *cbuf, int bufsz)
982 {
983 	char *s;
984 	int len, rc = -1;
985 
986 	s = smb_config_getenv_generic(IDMAP_SITE_NAME,
987 	    IDMAP_FMRI_PREFIX, IDMAP_PG_NAME);
988 	if (s != NULL) {
989 		len = strlcpy(cbuf, s, bufsz);
990 		if (len < bufsz)
991 			rc = 0;
992 		free(s);
993 	}
994 	return (rc);
995 }
996 
997 static int
998 smb_config_set_idmap_site_name(char *value)
999 {
1000 	return (smb_config_setenv_generic(IDMAP_FMRI_PREFIX, IDMAP_PG_NAME,
1001 	    IDMAP_SITE_NAME, value));
1002 }
1003 
1004 /*
1005  * smb_config_set_idmap_domain
1006  *
1007  * Set the "config/domain_name" parameter from IDMAP SMF repository.
1008  */
1009 int
1010 smb_config_set_idmap_domain(char *value)
1011 {
1012 	return (smb_config_setenv_generic(IDMAP_FMRI_PREFIX, IDMAP_PG_NAME,
1013 	    IDMAP_DOMAIN, value));
1014 }
1015 
1016 /*
1017  * smb_config_refresh_idmap
1018  *
1019  * Refresh IDMAP SMF service after making changes to its configuration.
1020  */
1021 int
1022 smb_config_refresh_idmap(void)
1023 {
1024 	char instance[32];
1025 
1026 	(void) snprintf(instance, sizeof (instance), "%s:default",
1027 	    IDMAP_FMRI_PREFIX);
1028 	return (smf_refresh_instance(instance));
1029 }
1030 
1031 int
1032 smb_config_secmode_fromstr(char *secmode)
1033 {
1034 	if (secmode == NULL)
1035 		return (SMB_SECMODE_WORKGRP);
1036 
1037 	if (strcasecmp(secmode, SMB_SECMODE_DOMAIN_STR) == 0)
1038 		return (SMB_SECMODE_DOMAIN);
1039 
1040 	return (SMB_SECMODE_WORKGRP);
1041 }
1042 
1043 char *
1044 smb_config_secmode_tostr(int secmode)
1045 {
1046 	if (secmode == SMB_SECMODE_DOMAIN)
1047 		return (SMB_SECMODE_DOMAIN_STR);
1048 
1049 	return (SMB_SECMODE_WORKGRP_STR);
1050 }
1051 
1052 int
1053 smb_config_get_secmode()
1054 {
1055 	char p[16];
1056 
1057 	(void) smb_config_getstr(SMB_CI_SECURITY, p, sizeof (p));
1058 	return (smb_config_secmode_fromstr(p));
1059 }
1060 
1061 int
1062 smb_config_set_secmode(int secmode)
1063 {
1064 	char *p;
1065 
1066 	p = smb_config_secmode_tostr(secmode);
1067 	return (smb_config_setstr(SMB_CI_SECURITY, p));
1068 }
1069 
1070 void
1071 smb_config_getdomaininfo(char *domain, char *fqdn, char *sid, char *forest,
1072     char *guid)
1073 {
1074 	if (domain)
1075 		(void) smb_config_getstr(SMB_CI_DOMAIN_NAME, domain,
1076 		    NETBIOS_NAME_SZ);
1077 
1078 	if (fqdn)
1079 		(void) smb_config_getstr(SMB_CI_DOMAIN_FQDN, fqdn,
1080 		    MAXHOSTNAMELEN);
1081 
1082 	if (sid)
1083 		(void) smb_config_getstr(SMB_CI_DOMAIN_SID, sid,
1084 		    SMB_SID_STRSZ);
1085 
1086 	if (forest)
1087 		(void) smb_config_getstr(SMB_CI_DOMAIN_FOREST, forest,
1088 		    MAXHOSTNAMELEN);
1089 
1090 	if (guid)
1091 		(void) smb_config_getstr(SMB_CI_DOMAIN_GUID, guid,
1092 		    UUID_PRINTABLE_STRING_LENGTH);
1093 }
1094 
1095 void
1096 smb_config_setdomaininfo(char *domain, char *fqdn, char *sid, char *forest,
1097     char *guid)
1098 {
1099 	if (domain)
1100 		(void) smb_config_setstr(SMB_CI_DOMAIN_NAME, domain);
1101 	if (fqdn)
1102 		(void) smb_config_setstr(SMB_CI_DOMAIN_FQDN, fqdn);
1103 	if (sid)
1104 		(void) smb_config_setstr(SMB_CI_DOMAIN_SID, sid);
1105 	if (forest)
1106 		(void) smb_config_setstr(SMB_CI_DOMAIN_FOREST, forest);
1107 	if (guid)
1108 		(void) smb_config_setstr(SMB_CI_DOMAIN_GUID, guid);
1109 }
1110 
1111 /*
1112  * The version stored in SMF in string format as N.N where
1113  * N is a number defined by Microsoft. The first number represents
1114  * the major version and the second number is the minor version.
1115  * Current defined values can be found here in 'ver_table'.
1116  *
1117  * This function reads the SMF string value and converts it to
1118  * two numbers returned in the given 'version' structure.
1119  * Current default version number is 5.0 which is for Windows 2000.
1120  */
1121 void
1122 smb_config_get_version(smb_version_t *version)
1123 {
1124 	smb_version_t tmpver;
1125 	char verstr[SMB_VERSTR_LEN];
1126 	char *p;
1127 	int rc, i;
1128 	static smb_version_t ver_table [] = {
1129 		{ 0, SMB_MAJOR_NT,	SMB_MINOR_NT,		1381,	0 },
1130 		{ 0, SMB_MAJOR_2000,	SMB_MINOR_2000,		2195,	0 },
1131 		{ 0, SMB_MAJOR_XP,	SMB_MINOR_XP,		2196,	0 },
1132 		{ 0, SMB_MAJOR_2003,	SMB_MINOR_2003,		2196,	0 },
1133 		{ 0, SMB_MAJOR_VISTA,	SMB_MINOR_VISTA,	6000,	0 },
1134 		{ 0, SMB_MAJOR_2008,	SMB_MINOR_2008,		6000,	0 },
1135 		{ 0, SMB_MAJOR_2008R2,	SMB_MINOR_2008R2,	7007,	0 },
1136 		{ 0, SMB_MAJOR_7,	SMB_MINOR_7,		7007,	0 }
1137 	};
1138 
1139 	*version = ver_table[1];
1140 	version->sv_size = sizeof (smb_version_t);
1141 
1142 	rc = smb_config_getstr(SMB_CI_VERSION, verstr, sizeof (verstr));
1143 	if (rc != SMBD_SMF_OK)
1144 		return;
1145 
1146 	if ((p = strchr(verstr, '.')) == NULL)
1147 		return;
1148 
1149 	*p = '\0';
1150 	tmpver.sv_major = (uint8_t)atoi(verstr);
1151 	tmpver.sv_minor = (uint8_t)atoi(p + 1);
1152 
1153 	for (i = 0; i < sizeof (ver_table)/sizeof (ver_table[0]); ++i) {
1154 		if ((tmpver.sv_major == ver_table[i].sv_major) &&
1155 		    (tmpver.sv_minor == ver_table[i].sv_minor)) {
1156 			*version = ver_table[i];
1157 			version->sv_size = sizeof (smb_version_t);
1158 			break;
1159 		}
1160 	}
1161 }
1162 
1163 /*
1164  * Reads share exec script properties
1165  */
1166 uint32_t
1167 smb_config_get_execinfo(char *map, char *unmap, size_t bufsz)
1168 {
1169 	char buf[MAXPATHLEN];
1170 	uint32_t flags = 0;
1171 
1172 	if (map == NULL) {
1173 		map = buf;
1174 		bufsz = MAXPATHLEN;
1175 	}
1176 
1177 	*map = '\0';
1178 	(void) smb_config_getstr(SMB_CI_MAP, map, bufsz);
1179 	if (*map != '\0')
1180 		flags |= SMB_EXEC_MAP;
1181 
1182 	if (unmap == NULL) {
1183 		unmap = buf;
1184 		bufsz = MAXPATHLEN;
1185 	}
1186 
1187 	*unmap = '\0';
1188 	(void) smb_config_getstr(SMB_CI_UNMAP, unmap, bufsz);
1189 	if (*unmap != '\0')
1190 		flags |= SMB_EXEC_UNMAP;
1191 
1192 	*buf = '\0';
1193 	(void) smb_config_getstr(SMB_CI_DISPOSITION, buf, sizeof (buf));
1194 	if (*buf != '\0')
1195 		if (strcasecmp(buf, SMB_EXEC_DISP_TERMINATE) == 0)
1196 			flags |= SMB_EXEC_TERM;
1197 
1198 	return (flags);
1199 }
1200 
1201 static smb_cfg_param_t *
1202 smb_config_getent(smb_cfg_id_t id)
1203 {
1204 	int i;
1205 
1206 	for (i = 0; i < SMB_CI_MAX; i++)
1207 		if (smb_cfg_table[i].sc_id == id)
1208 			return (&smb_cfg_table[id]);
1209 
1210 	assert(0);
1211 	return (NULL);
1212 }
1213 
1214 static uint32_t
1215 smb_config_get_protocol(smb_cfg_id_t id, char *name, uint32_t default_val)
1216 {
1217 	char str[SMB_VERSTR_LEN];
1218 	int rc;
1219 	uint32_t val;
1220 
1221 	rc = smb_config_getstr(id, str, sizeof (str));
1222 	if (rc == SMBD_SMF_OK) {
1223 		val = smb_convert_version_str(str);
1224 		if (val != 0)
1225 			return (val);
1226 		if (str[0] != '\0') {
1227 			syslog(LOG_ERR, "smbd/%s value invalid: %s", name, str);
1228 		}
1229 	}
1230 
1231 	return (default_val);
1232 }
1233 
1234 /*
1235  * The service manifest has empty values by default for min_protocol and
1236  * max_protocol. The expectation is that when those values are empty, we don't
1237  * constrain the range of supported protocol versions (and allow use of the
1238  * whole range that we implement). For that reason, this should usually be the
1239  * highest protocol version we implement.
1240  */
1241 uint32_t max_protocol_default = SMB_VERS_3_11;
1242 
1243 uint32_t
1244 smb_config_get_max_protocol(void)
1245 {
1246 	uint32_t max;
1247 
1248 	max = smb_config_get_protocol(SMB_CI_MAX_PROTOCOL, "max_protocol",
1249 	    max_protocol_default);
1250 
1251 	return (max);
1252 }
1253 
1254 /*
1255  * This should eventually be SMB_VERS_2_BASE
1256  */
1257 uint32_t min_protocol_default = SMB_VERS_1;
1258 
1259 uint32_t
1260 smb_config_get_min_protocol(void)
1261 {
1262 	uint32_t min;
1263 
1264 	min = smb_config_get_protocol(SMB_CI_MIN_PROTOCOL, "min_protocol",
1265 	    min_protocol_default);
1266 
1267 	return (min);
1268 }
1269 
1270 int
1271 smb_config_check_protocol(char *value)
1272 {
1273 	if (smb_convert_version_str(value) != 0)
1274 		return (0);
1275 
1276 	return (-1);
1277 }
1278 
1279 /*
1280  * Only SMB 3.x supports encryption.
1281  * SMB 3.0.2 uses AES128-CCM only.
1282  * SMB 3.1.1 - AES128-CCM or AES128-GCM.
1283  */
1284 uint16_t
1285 smb31_config_get_encrypt_cipher(void)
1286 {
1287 	uint32_t max_proto = smb_config_get_max_protocol();
1288 	uint16_t cipher = SMB3_CIPHER_AES128_GCM; /* by default AES128-GCM */
1289 	char str[12];
1290 	int i;
1291 
1292 	if (max_proto < SMB_VERS_3_11)
1293 		return (SMB3_CIPHER_NONE);
1294 
1295 	/* SMB 3.1.1 */
1296 	if (smb_config_getstr(SMB_CI_ENCRYPT_CIPHER, str, sizeof (str))
1297 	    == SMBD_SMF_OK) {
1298 		for (i = 0; smb31_encrypt_ciphers[i].str != NULL; i++) {
1299 			if (strcmp(str, smb31_encrypt_ciphers[i].str) == 0)
1300 				cipher = smb31_encrypt_ciphers[i].val;
1301 		}
1302 	}
1303 
1304 	return (cipher);
1305 }
1306 
1307 /*
1308  * If smb2_enable is present and max_protocol is empty,
1309  * set max_protocol.  Delete smb2_enable.
1310  */
1311 static void
1312 upgrade_smb2_enable()
1313 {
1314 	smb_scfhandle_t *handle;
1315 	char *s2e_name = "smb2_enable";
1316 	char *s2e_sval;
1317 	uint8_t	s2e_bval;
1318 	char *maxp_name = "max_protocol";
1319 	char *maxp_sval;
1320 	char verstr[SMB_VERSTR_LEN];
1321 	int rc;
1322 
1323 	handle = smb_smf_scf_init(SMBD_FMRI_PREFIX);
1324 	if (handle == NULL)
1325 		return;
1326 	rc = smb_smf_create_service_pgroup(handle, SMBD_PG_NAME);
1327 	if (rc != SMBD_SMF_OK)
1328 		goto out;
1329 
1330 	/* Is there an "smb2_enable" property? */
1331 	rc = smb_smf_get_boolean_property(handle, s2e_name, &s2e_bval);
1332 	if (rc != SMBD_SMF_OK) {
1333 		syslog(LOG_DEBUG, "upgrade: smb2_enable not found");
1334 		goto out;
1335 	}
1336 
1337 	/*
1338 	 * We will try to delete the smb2_enable property, so we need
1339 	 * the transaction to start now, before we modify max_protocol
1340 	 */
1341 	if ((rc = smb_smf_start_transaction(handle)) != 0) {
1342 		syslog(LOG_DEBUG, "upgrade_smb2_enable: start trans (%d)", rc);
1343 		goto out;
1344 	}
1345 
1346 	/*
1347 	 * Old (smb2_enable) property exists.
1348 	 * Does the new one? (max_protocol)
1349 	 */
1350 	rc = smb_smf_get_string_property(handle, maxp_name,
1351 	    verstr, sizeof (verstr));
1352 	if (rc == SMBD_SMF_OK && !smb_config_check_protocol(verstr)) {
1353 		syslog(LOG_DEBUG, "upgrade: found %s = %s",
1354 		    maxp_name, verstr);
1355 		/* Leave existing max_protocol as we found it. */
1356 	} else {
1357 		/*
1358 		 * New property missing or invalid.
1359 		 * Upgrade from "smb2_enable".
1360 		 */
1361 		if (s2e_bval == 0) {
1362 			s2e_sval = "false";
1363 			maxp_sval = "1";
1364 		} else {
1365 			s2e_sval = "true";
1366 			maxp_sval = "2.1";
1367 		}
1368 		/*
1369 		 * Note: Need this in the same transaction as the
1370 		 * delete of smb2_enable below.
1371 		 */
1372 		rc = smb_smf_set_string_property(handle, maxp_name, maxp_sval);
1373 		if (rc != SMBD_SMF_OK) {
1374 			syslog(LOG_ERR, "failed to set smbd/%d (%d)",
1375 			    maxp_name, rc);
1376 			goto out;
1377 		}
1378 		syslog(LOG_INFO, "upgrade smbd/smb2_enable=%s "
1379 		    "converted to smbd/max_protocol=%s",
1380 		    s2e_sval, maxp_sval);
1381 	}
1382 
1383 	/*
1384 	 * Delete the old smb2_enable property.
1385 	 */
1386 	if ((rc = smb_smf_delete_property(handle, s2e_name)) != 0) {
1387 		syslog(LOG_DEBUG, "upgrade_smb2_enable: delete prop (%d)", rc);
1388 	} else if ((rc = smb_smf_end_transaction(handle)) != 0) {
1389 		syslog(LOG_DEBUG, "upgrade_smb2_enable: end trans (%d)", rc);
1390 	}
1391 	if (rc != 0) {
1392 		syslog(LOG_ERR, "failed to delete property smbd/%d (%d)",
1393 		    s2e_name, rc);
1394 	}
1395 
1396 out:
1397 	(void) smb_smf_end_transaction(handle);
1398 	smb_smf_scf_fini(handle);
1399 }
1400 
1401 
1402 /*
1403  * Run once at startup convert old SMF settings to current.
1404  */
1405 void
1406 smb_config_upgrade(void)
1407 {
1408 	upgrade_smb2_enable();
1409 }
1410 
1411 smb_cfg_val_t
1412 smb_config_get_require(smb_cfg_id_t id)
1413 {
1414 	int rc;
1415 	char str[sizeof ("required")];
1416 
1417 	rc = smb_config_getstr(id, str, sizeof (str));
1418 	if (rc != SMBD_SMF_OK)
1419 		return (SMB_CONFIG_DISABLED);
1420 
1421 	if (strncmp(str, "required", sizeof (str)) == 0)
1422 		return (SMB_CONFIG_REQUIRED);
1423 	if (strncmp(str, "enabled", sizeof (str)) == 0)
1424 		return (SMB_CONFIG_ENABLED);
1425 
1426 	return (SMB_CONFIG_DISABLED);
1427 }
1428