1SLAPO-ACCESSLOG(5) File Formats Manual SLAPO-ACCESSLOG(5)
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6 slapo-accesslog - Access Logging overlay to slapd
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9 /etc/openldap/slapd.conf
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12 The Access Logging overlay can be used to record all accesses to a
13 given backend database on another database. This allows all of the ac‐
14 tivity on a given database to be reviewed using arbitrary LDAP queries,
15 instead of just logging to local flat text files. Configuration options
16 are available for selecting a subset of operation types to log, and to
17 automatically prune older log records from the logging database. Log
18 records are stored with audit schema (see below) to assure their read‐
19 ability whether viewed as LDIF or in raw form.
20
22 These slapd.conf options apply to the Access Logging overlay. They
23 should appear after the overlay directive.
24 logdb <suffix>
26 Specify the suffix of a database to be used for storing the log
27 records. The specified database must be defined elsewhere in
28 the configuration and must support an ordered return of results
29 such as slapd-mdb(5) The access controls on the log database
30 should prevent general access. The suffix entry of the log data‐
31 base will be created automatically by this overlay. The log en‐
32 tries will be generated as the immediate children of the suffix
33 entry.
34 logops <operations>
36 Specify which types of operations to log. The valid operation
37 types are abandon, add, bind, compare, delete, extended, modify,
38 modrdn, search, and unbind. Aliases for common sets of opera‐
39 tions are also available:
40 writes add, delete, modify, modrdn
42 reads compare, search
44 session
46 abandon, bind, unbind
47 all all operations
49 logbase <operations> <baseDN>
51 Specify a set of operations that will only be logged if they oc‐
52 cur under a specific subtree of the database. The operation
53 types are as above for the logops setting, and delimited by a
54 '|' character.
55 logold <filter>
57 Specify a filter for matching against Deleted and Modified en‐
58 tries. If the entry matches the filter, the old contents of the
59 entry will be logged along with the current request.
60 logoldattr <attr> ...
62 Specify a list of attributes whose old contents are always
63 logged in Modify and ModRDN requests that match any of the fil‐
64 ters configured in logold. Usually only the contents of at‐
65 tributes that were actually modified will be logged; by default
66 no old attributes are logged for ModRDN requests.
67 logpurge <age> <interval>
69 Specify the maximum age for log entries to be retained in the
70 database, and how often to scan the database for old entries.
71 Both the age and interval are specified as a time span in days,
72 hours, minutes, and seconds. The time format is [ddd+]hh:mm[:ss]
73 i.e., the days and seconds components are optional but hours and
74 minutes are required. Except for days, which can be up to 5 dig‐
75 its, each numeric field must be exactly two digits. For example
76 logpurge 2+00:00 1+00:00
77 would specify that the log database should be scanned every day
78 for old entries, and entries older than two days should be
79 deleted. When using a log database that supports ordered index‐
80 ing on generalizedTime attributes, specifying an eq index on the
81 reqStart attribute will greatly benefit the performance of the
82 purge operation.
83 logsuccess TRUE | FALSE
85 If set to TRUE then log records will only be generated for suc‐
86 cessful requests, i.e., requests that produce a result code of 0
87 (LDAP_SUCCESS). If FALSE, log records are generated for all re‐
88 quests whether they succeed or not. The default is FALSE.
89
92 database mdb
93 suffix dc=example,dc=com
94 ...
95 overlay accesslog
96 logdb cn=log
97 logops writes reads
98 logbase search|compare ou=testing,dc=example,dc=com
99 logold (objectclass=person)
100 database mdb
102 suffix cn=log
103 ...
104 index reqStart eq
105 access to *
106 by dn.base="cn=admin,dc=example,dc=com" read
107
110 The accesslog overlay utilizes the "audit" schema described herein.
111 This schema is specifically designed for accesslog auditing and is not
112 intended to be used otherwise. It is also noted that the schema de‐
113 scribed here is a work in progress, and hence subject to change without
114 notice. The schema is loaded automatically by the overlay.
115 The schema includes a number of object classes and associated attribute
117 types as described below.
118 The root entry of the underlying accesslog database makes use of the
120 auditContainer class which is as follows:
121 ( 1.3.6.1.4.1.4203.666.11.5.2.0
123 NAME 'auditContainer'
124 DESC 'AuditLog container'
125 SUP top STRUCTURAL
126 MAY ( cn $ reqStart $ reqEnd ) )
127 There is a basic auditObject class from which two additional classes,
129 auditReadObject and auditWriteObject are derived. Object classes for
130 each type of LDAP operation are further derived from these classes.
131 This object class hierarchy is designed to allow flexible yet efficient
132 searches of the log based on either a specific operation type's class,
133 or on more general classifications. The definition of the auditObject
134 class is as follows:
135 ( 1.3.6.1.4.1.4203.666.11.5.2.1
137 NAME 'auditObject'
138 DESC 'OpenLDAP request auditing'
139 SUP top STRUCTURAL
140 MUST ( reqStart $ reqType $ reqSession )
141 MAY ( reqDN $ reqAuthzID $ reqControls $ reqRespControls $
142 reqEnd $ reqResult $ reqMessage $ reqReferral $ reqEntryU‐
143 UID ) )
144 Note that all of the OIDs used in the logging schema currently reside
146 under the OpenLDAP Experimental branch. It is anticipated that they
147 will migrate to a Standard branch in the future.
148 An overview of the attributes follows: reqStart and reqEnd provide the
150 start and end time of the operation, respectively. They use general‐
151 izedTime syntax. The reqStart attribute is also used as the RDN for
152 each log entry.
153 The reqType attribute is a simple string containing the type of opera‐
155 tion being logged, e.g. add, delete, search, etc. For extended opera‐
156 tions, the type also includes the OID of the extended operation, e.g.
157 extended(1.1.1.1)
158 The reqSession attribute is an implementation-specific identifier that
160 is common to all the operations associated with the same LDAP session.
161 Currently this is slapd's internal connection ID, stored in decimal.
162 The reqDN attribute is the distinguishedName of the target of the oper‐
164 ation. E.g., for a Bind request, this is the Bind DN. For an Add re‐
165 quest, this is the DN of the entry being added. For a Search request,
166 this is the base DN of the search.
167 The reqAuthzID attribute is the distinguishedName of the user that per‐
169 formed the operation. This will usually be the same name as was estab‐
170 lished at the start of a session by a Bind request (if any) but may be
171 altered in various circumstances.
172 The reqControls and reqRespControls attributes carry any controls sent
174 by the client on the request and returned by the server in the re‐
175 sponse, respectively. The attribute values are just uninterpreted octet
176 strings.
177 The reqResult attribute is the numeric LDAP result code of the opera‐
179 tion, indicating either success or a particular LDAP error code. An er‐
180 ror code may be accompanied by a text error message which will be
181 recorded in the reqMessage attribute.
182 The reqReferral attribute carries any referrals that were returned with
184 the result of the request.
185 The reqEntryUUID attribute records the entryUUID attribute of the entry
187 operated on, for an Add request, this is the entryUUID of the newly
188 created entry.
189 Operation-specific classes are defined with additional attributes to
191 carry all of the relevant parameters associated with the operation:
192 ( 1.3.6.1.4.1.4203.666.11.5.2.4
195 NAME 'auditAbandon'
196 DESC 'Abandon operation'
197 SUP auditObject STRUCTURAL
198 MUST reqId )
199 For the Abandon operation the reqId attribute contains the message ID
201 of the request that was abandoned.
202 ( 1.3.6.1.4.1.4203.666.11.5.2.5
205 NAME 'auditAdd'
206 DESC 'Add operation'
207 SUP auditWriteObject STRUCTURAL
208 MUST reqMod )
209 The Add class inherits from the auditWriteObject class. The Add and
211 Modify classes are very similar. The reqMod attribute carries all of
212 the attributes of the original entry being added. (Or in the case of a
213 Modify operation, all of the modifications being performed.) The values
214 are formatted as
215 attribute:<+|-|=|#> [ value]
216 Where '+' indicates an Add of a value, '-' for Delete, '=' for Replace,
217 and '#' for Increment. In an Add operation, all of the reqMod values
218 will have the '+' designator.
219 ( 1.3.6.1.4.1.4203.666.11.5.2.6
221 NAME 'auditBind'
222 DESC 'Bind operation'
223 SUP auditObject STRUCTURAL
224 MUST ( reqVersion $ reqMethod ) )
225 The Bind class includes the reqVersion attribute which contains the
227 LDAP protocol version specified in the Bind as well as the reqMethod
228 attribute which contains the Bind Method used in the Bind. This will be
229 the string SIMPLE for LDAP Simple Binds or SASL(<mech>) for SASL Binds.
230 Note that unless configured as a global overlay, only Simple Binds us‐
231 ing DNs that reside in the current database will be logged.
232 ( 1.3.6.1.4.1.4203.666.11.5.2.7
235 NAME 'auditCompare'
236 DESC 'Compare operation'
237 SUP auditObject STRUCTURAL
238 MUST reqAssertion )
239 For the Compare operation the reqAssertion attribute carries the Attri‐
241 bute Value Assertion used in the compare request.
242 ( 1.3.6.1.4.1.4203.666.11.5.2.8
245 NAME 'auditDelete'
246 DESC 'Delete operation'
247 SUP auditWriteObject STRUCTURAL
248 MAY reqOld )
249 The Delete operation needs no further parameters. However, the reqOld
251 attribute may optionally be used to record the contents of the entry
252 prior to its deletion. The values are formatted as
253 attribute: value
254 The reqOld attribute is only populated if the entry being deleted
255 matches the configured logold filter.
256 ( 1.3.6.1.4.1.4203.666.11.5.2.9
259 NAME 'auditModify'
260 DESC 'Modify operation'
261 SUP auditWriteObject STRUCTURAL
262 MAY ( reqOld $ reqMod ) )
263 The Modify operation contains a description of modifications in the re‐
265 qMod attribute, which was already described above in the Add operation.
266 It may optionally contain the previous contents of any modified at‐
267 tributes in the reqOld attribute, using the same format as described
268 above for the Delete operation. The reqOld attribute is only populated
269 if the entry being modified matches the configured logold filter.
270 ( 1.3.6.1.4.1.4203.666.11.5.2.10
273 NAME 'auditModRDN'
274 DESC 'ModRDN operation'
275 SUP auditWriteObject STRUCTURAL
276 MUST ( reqNewRDN $ reqDeleteOldRDN )
277 MAY ( reqNewSuperior $ reqMod $ reqOld ) )
278 The ModRDN class uses the reqNewRDN attribute to carry the new RDN of
280 the request. The reqDeleteOldRDN attribute is a Boolean value showing
281 TRUE if the old RDN was deleted from the entry, or FALSE if the old RDN
282 was preserved. The reqNewSuperior attribute carries the DN of the new
283 parent entry if the request specified the new parent. The reqOld at‐
284 tribute is only populated if the entry being modified matches the con‐
285 figured logold filter and contains attributes in the logoldattr list.
286 ( 1.3.6.1.4.1.4203.666.11.5.2.11
289 NAME 'auditSearch'
290 DESC 'Search operation'
291 SUP auditReadObject STRUCTURAL
292 MUST ( reqScope $ reqDerefAliases $ reqAttrsOnly )
293 MAY ( reqFilter $ reqAttr $ reqEntries $ reqSizeLimit $
294 reqTimeLimit ) )
295 For the Search class the reqScope attribute contains the scope of the
297 original search request, using the values specified for the LDAP URL
298 format. I.e. base, one, sub, or subord. The reqDerefAliases attribute
299 is one of never, finding, searching, or always, denoting how aliases
300 will be processed during the search. The reqAttrsOnly attribute is a
301 Boolean value showing TRUE if only attribute names were requested, or
302 FALSE if attributes and their values were requested. The reqFilter at‐
303 tribute carries the filter used in the search request. The reqAttr at‐
304 tribute lists the requested attributes if specific attributes were re‐
305 quested. The reqEntries attribute is the integer count of how many en‐
306 tries were returned by this search request. The reqSizeLimit and req‐
307 TimeLimit attributes indicate what limits were requested on the search
308 operation.
309 ( 1.3.6.1.4.1.4203.666.11.5.2.12
312 NAME 'auditExtended'
313 DESC 'Extended operation'
314 SUP auditObject STRUCTURAL
315 MAY reqData )
316 The Extended class represents an LDAP Extended Operation. As noted
318 above, the actual OID of the operation is included in the reqType at‐
319 tribute of the parent class. If any optional data was provided with the
320 request, it will be contained in the reqData attribute as an uninter‐
321 preted octet string.
322
325 The Access Log implemented by this overlay may be used for a variety of
326 other tasks, e.g. as a ChangeLog for a replication mechanism, as well
327 as for security/audit logging purposes.
328
331 /etc/openldap/slapd.conf
332 default slapd configuration file
333
335 slapd.conf(5), slapd-config(5).
336
339 This module was written in 2005 by Howard Chu of Symas Corporation.
340OpenLDAP 2.6.3 2022/07/14 SLAPO-ACCESSLOG(5)