1 /*
2    Unix SMB/CIFS mplementation.
3    DSDB schema header
4 
5    Copyright (C) Stefan Metzmacher <metze@samba.org> 2006
6 
7    This program is free software; you can redistribute it and/or modify
8    it under the terms of the GNU General Public License as published by
9    the Free Software Foundation; either version 3 of the License, or
10    (at your option) any later version.
11 
12    This program is distributed in the hope that it will be useful,
13    but WITHOUT ANY WARRANTY; without even the implied warranty of
14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15    GNU General Public License for more details.
16 
17    You should have received a copy of the GNU General Public License
18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
19 
20 */
21 
22 #ifndef _DSDB_SCHEMA_H
23 #define _DSDB_SCHEMA_H
24 
25 #include "prefixmap.h"
26 
27 enum dsdb_dn_format {
28 	DSDB_NORMAL_DN,
29 	DSDB_BINARY_DN,
30 	DSDB_STRING_DN,
31 	DSDB_INVALID_DN
32 };
33 
34 
35 struct dsdb_attribute;
36 struct dsdb_class;
37 struct dsdb_schema;
38 struct dsdb_dn;
39 
40 struct dsdb_syntax_ctx {
41 	struct ldb_context *ldb;
42 	const struct dsdb_schema *schema;
43 
44 	/* set when converting objects under Schema NC */
45 	bool is_schema_nc;
46 
47 	/* remote prefixMap to be used for drsuapi_to_ldb conversions */
48 	const struct dsdb_schema_prefixmap *pfm_remote;
49 };
50 
51 
52 struct dsdb_syntax {
53 	const char *name;
54 	const char *ldap_oid;
55 	uint32_t oMSyntax;
56 	struct ldb_val oMObjectClass;
57 	const char *attributeSyntax_oid;
58 	const char *equality;
59 	const char *substring;
60 	const char *comment;
61 	const char *ldb_syntax;
62 
63 	WERROR (*drsuapi_to_ldb)(const struct dsdb_syntax_ctx *ctx,
64 				 const struct dsdb_attribute *attr,
65 				 const struct drsuapi_DsReplicaAttribute *in,
66 				 TALLOC_CTX *mem_ctx,
67 				 struct ldb_message_element *out);
68 	WERROR (*ldb_to_drsuapi)(const struct dsdb_syntax_ctx *ctx,
69 				 const struct dsdb_attribute *attr,
70 				 const struct ldb_message_element *in,
71 				 TALLOC_CTX *mem_ctx,
72 				 struct drsuapi_DsReplicaAttribute *out);
73 	WERROR (*validate_ldb)(const struct dsdb_syntax_ctx *ctx,
74 			       const struct dsdb_attribute *attr,
75 			       const struct ldb_message_element *in);
76 	bool auto_normalise;
77 	bool userParameters; /* Indicates the syntax userParameters should be forced to */
78 };
79 
80 struct dsdb_attribute {
81 	struct dsdb_attribute *prev, *next;
82 
83 	const char *cn;
84 	const char *lDAPDisplayName;
85 	const char *attributeID_oid;
86 	uint32_t attributeID_id;
87 	struct GUID schemaIDGUID;
88 	uint32_t mAPIID;
89 	uint32_t msDS_IntId;
90 
91 	struct GUID attributeSecurityGUID;
92 	struct GUID objectGUID;
93 
94 	uint32_t searchFlags;
95 	uint32_t systemFlags;
96 	bool isMemberOfPartialAttributeSet;
97 	uint32_t linkID;
98 
99 	const char *attributeSyntax_oid;
100 	uint32_t attributeSyntax_id;
101 	uint32_t oMSyntax;
102 	struct ldb_val oMObjectClass;
103 
104 	bool isSingleValued;
105 	uint32_t *rangeLower;
106 	uint32_t *rangeUpper;
107 	bool extendedCharsAllowed;
108 
109 	uint32_t schemaFlagsEx;
110 	struct ldb_val msDs_Schema_Extensions;
111 
112 	bool showInAdvancedViewOnly;
113 	const char *adminDisplayName;
114 	const char *adminDescription;
115 	const char *classDisplayName;
116 	bool isEphemeral;
117 	bool isDefunct;
118 	bool systemOnly;
119 
120 	bool one_way_link;
121 	enum dsdb_dn_format dn_format;
122 
123 	/* internal stuff */
124 	const struct dsdb_syntax *syntax;
125 	const struct ldb_schema_attribute *ldb_schema_attribute;
126 };
127 
128 struct dsdb_class {
129 	struct dsdb_class *prev, *next;
130 
131 	const char *cn;
132 	const char *lDAPDisplayName;
133 	const char *governsID_oid;
134 	uint32_t governsID_id;
135 	struct GUID schemaIDGUID;
136 	struct GUID objectGUID;
137 
138 	uint32_t objectClassCategory;
139 	const char *rDNAttID;
140 	const char *defaultObjectCategory;
141 
142 	const char *subClassOf;
143 
144 	const char **systemAuxiliaryClass;
145 	const char **systemPossSuperiors;
146 	const char **systemMustContain;
147 	const char **systemMayContain;
148 
149 	const char **auxiliaryClass;
150 	const char **possSuperiors;
151 	const char **mustContain;
152 	const char **mayContain;
153 	const char **possibleInferiors;
154 	const char **systemPossibleInferiors;
155 
156 	const char *defaultSecurityDescriptor;
157 
158 	uint32_t schemaFlagsEx;
159 	uint32_t systemFlags;
160 	struct ldb_val msDs_Schema_Extensions;
161 
162 	bool showInAdvancedViewOnly;
163 	const char *adminDisplayName;
164 	const char *adminDescription;
165 	const char *classDisplayName;
166 	bool defaultHidingValue;
167 	bool isDefunct;
168 	bool systemOnly;
169 
170 	uint32_t subClassOf_id;
171 	uint32_t *systemAuxiliaryClass_ids;
172 	uint32_t *auxiliaryClass_ids;
173 	uint32_t *systemMayContain_ids;
174 	uint32_t *systemMustContain_ids;
175 	uint32_t *possSuperiors_ids;
176 	uint32_t *mustContain_ids;
177 	uint32_t *mayContain_ids;
178 	uint32_t *systemPossSuperiors_ids;
179 
180 	/* An ordered index showing how this subClass fits into the
181 	 * subClass tree.  that is, an objectclass that is not
182 	 * subClassOf anything is 0 (just in case), and top is 1, and
183 	 * subClasses of top are 2, subclasses of those classes are
184 	 * 3 */
185 	uint32_t subClass_order;
186 
187 	struct {
188 		const char **supclasses;
189 		const char **subclasses;
190 		const char **subclasses_direct;
191 		const char **posssuperiors;
192 	} tmp;
193 };
194 
195 enum schema_set_enum {
196 	SCHEMA_MEMORY_ONLY = 0,
197 	SCHEMA_WRITE = 1,
198 	SCHEMA_COMPARE = 2,
199 };
200 
201 /**
202  * data stored in schemaInfo attribute
203  */
204 struct dsdb_schema_info {
205 	uint32_t 	revision;
206 	struct GUID	invocation_id;
207 };
208 
209 
210 struct dsdb_schema {
211 	struct dsdb_schema_prefixmap *prefixmap;
212 
213 	/*
214 	 * the last element of the prefix mapping table isn't a oid,
215 	 * it starts with 0xFF and has 21 bytes and is maybe a schema
216 	 * version number
217 	 *
218 	 * this is the content of the schemaInfo attribute of the
219 	 * Schema-Partition head object.
220 	 */
221 	struct dsdb_schema_info *schema_info;
222 
223 	struct dsdb_attribute *attributes;
224 	struct dsdb_class *classes;
225 
226 	struct dsdb_attribute **attributes_to_remove;
227 	uint32_t attributes_to_remove_size;
228 	struct dsdb_class **classes_to_remove;
229 	uint32_t classes_to_remove_size;
230 
231 	/* lists of classes sorted by various attributes, for faster
232 	   access */
233 	uint32_t num_classes;
234 	struct dsdb_class **classes_by_lDAPDisplayName;
235 	struct dsdb_class **classes_by_governsID_id;
236 	struct dsdb_class **classes_by_governsID_oid;
237 	struct dsdb_class **classes_by_cn;
238 
239 	/* lists of attributes sorted by various fields */
240 	uint32_t num_attributes;
241 	struct dsdb_attribute **attributes_by_lDAPDisplayName;
242 	struct dsdb_attribute **attributes_by_attributeID_id;
243 	struct dsdb_attribute **attributes_by_attributeID_oid;
244 	struct dsdb_attribute **attributes_by_linkID;
245 	uint32_t num_int_id_attr;
246 	struct dsdb_attribute **attributes_by_msDS_IntId;
247 
248 	struct {
249 		bool we_are_master;
250 		bool update_allowed;
251 		struct ldb_dn *master_dn;
252 	} fsmo;
253 
254 	/* Was this schema loaded from ldb (if so, then we will reload it when we detect a change in ldb) */
255 	bool refresh_in_progress;
256 	time_t ts_last_change;
257 	/* This 'opaque' is stored in the metadata and is used to check if the currently
258 	 * loaded schema needs a reload because another process has signaled that it has been
259 	 * requested to reload the schema (either due through DRS or via the schemaUpdateNow).
260 	 */
261 	uint64_t metadata_usn;
262 
263 	/* Should the syntax handlers in this case handle all incoming OIDs automatically, assigning them as an OID if no text name is known? */
264 	bool relax_OID_conversions;
265 
266 	/*
267 	 * we're currently trying to construct a working_schema
268 	 * in order to replicate the schema partition.
269 	 *
270 	 * We use this in order to avoid temporary failure DEBUG messages
271 	 */
272 	bool resolving_in_progress;
273 };
274 
275 #define DSDB_SCHEMA_COMMON_ATTRS			\
276 	        "objectClass",				\
277 		"cn",				        \
278 		"lDAPDisplayName",			\
279 		"schemaIDGUID",				\
280 		"objectGUID",				\
281 		"systemFlags",				\
282 		"schemaFlagsEx",			\
283 		"msDs-Schema-Extensions",		\
284 		"showInAdvancedViewOnly",		\
285 		"adminDisplayName",			\
286 		"adminDescription",			\
287 		"isDefunct",				\
288 		"systemOnly"
289 
290 #define DSDB_SCHEMA_ATTR_ATTRS				\
291 	        "attributeID",				\
292 		"msDS-IntId",				\
293 		"mAPIID",				\
294 		"attributeSecurityGUID",		\
295 		"searchFlags",				\
296 		"isMemberOfPartialAttributeSet",	\
297 		"linkID",				\
298 		"attributeSyntax",			\
299 		"oMSyntax",				\
300 		"oMObjectClass",			\
301 		"isSingleValued",			\
302 		"rangeLower",				\
303 		"rangeUpper",				\
304 		"extendedCharsAllowed",			\
305 		"classDisplayName",			\
306 		"isEphemeral"
307 
308 #define DSDB_SCHEMA_CLASS_ATTRS				\
309                 "governsID",				\
310 		"objectClassCategory",			\
311 		"rDNAttID",				\
312 		"defaultObjectCategory",		\
313 		"subClassOf",				\
314 		"systemAuxiliaryClass",			\
315 		"auxiliaryClass",			\
316 		"systemMustContain",			\
317 		"systemMayContain",			\
318 		"mustContain",				\
319 		"mayContain",				\
320 		"systemPossSuperiors",			\
321 		"possSuperiors",			\
322 		"defaultSecurityDescriptor",		\
323 		"classDisplayName",			\
324 		"defaultHidingValue"
325 
326 enum dsdb_attr_list_query {
327 	DSDB_SCHEMA_ALL_MAY,
328 	DSDB_SCHEMA_ALL_MUST,
329 	DSDB_SCHEMA_SYS_MAY,
330 	DSDB_SCHEMA_SYS_MUST,
331 	DSDB_SCHEMA_MAY,
332 	DSDB_SCHEMA_MUST,
333 	DSDB_SCHEMA_ALL
334 };
335 
336 enum dsdb_schema_convert_target {
337 	TARGET_OPENLDAP,
338 	TARGET_FEDORA_DS,
339 	TARGET_AD_SCHEMA_SUBENTRY
340 };
341 
342 struct ldb_module;
343 
344 typedef struct dsdb_schema *(*dsdb_schema_refresh_fn)(struct ldb_module *module,
345 						      struct tevent_context *ev,
346 						      struct dsdb_schema *schema, bool is_global_schema);
347 #include "dsdb/schema/proto.h"
348 
349 #endif /* _DSDB_SCHEMA_H */
350