1SLAPO-ACCESSLOG(5) File Formats Manual SLAPO-ACCESSLOG(5)
2
6 slapo-accesslog - Access Logging overlay to slapd
7
9 /etc/openldap/slapd.conf
10
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. The access controls on the log database
29 should prevent general access. The suffix entry of the log data‐
30 base will be created automatically by this overlay. The log en‐
31 tries will be generated as the immediate children of the suffix
32 entry.
33 logops <operations>
35 Specify which types of operations to log. The valid operation
36 types are abandon, add, bind, compare, delete, extended, modify,
37 modrdn, search, and unbind. Aliases for common sets of opera‐
38 tions are also available:
39 writes add, delete, modify, modrdn
41 reads compare, search
43 session
45 abandon, bind, unbind
46 all all operations
48 logbase <operations> <baseDN>
50 Specify a set of operations that will only be logged if they oc‐
51 cur under a specific subtree of the database. The operation
52 types are as above for the logops setting, and delimited by a
53 '|' character.
54 logold <filter>
56 Specify a filter for matching against Deleted and Modified en‐
57 tries. If the entry matches the filter, the old contents of the
58 entry will be logged along with the current request.
59 logoldattr <attr> ...
61 Specify a list of attributes whose old contents are always
62 logged in Modify and ModRDN requests. Usually only the contents
63 of attributes that were actually modified will be logged; by de‐
64 fault no old attributes are logged for ModRDN requests.
65 logpurge <age> <interval>
67 Specify the maximum age for log entries to be retained in the
68 database, and how often to scan the database for old entries.
69 Both the age and interval are specified as a time span in days,
70 hours, minutes, and seconds. The time format is [ddd+]hh:mm[:ss]
71 i.e., the days and seconds components are optional but hours and
72 minutes are required. Except for days, which can be up to 5 dig‐
73 its, each numeric field must be exactly two digits. For example
74 logpurge 2+00:00 1+00:00
75 would specify that the log database should be scanned every day
76 for old entries, and entries older than two days should be
77 deleted. When using a log database that supports ordered index‐
78 ing on generalizedTime attributes, specifying an eq index on the
79 reqStart attribute will greatly benefit the performance of the
80 purge operation.
81 logsuccess TRUE | FALSE
83 If set to TRUE then log records will only be generated for suc‐
84 cessful requests, i.e., requests that produce a result code of 0
85 (LDAP_SUCCESS). If FALSE, log records are generated for all re‐
86 quests whether they succeed or not. The default is FALSE.
87
90 database bdb
91 suffix dc=example,dc=com
92 ...
93 overlay accesslog
94 logdb cn=log
95 logops writes reads
96 logbase search|compare ou=testing,dc=example,dc=com
97 logold (objectclass=person)
98 database bdb
100 suffix cn=log
101 ...
102 index reqStart eq
103 access to *
104 by dn.base="cn=admin,dc=example,dc=com" read
105
108 The accesslog overlay utilizes the "audit" schema described herein.
109 This schema is specifically designed for accesslog auditing and is not
110 intended to be used otherwise. It is also noted that the schema de‐
111 scribed here is a work in progress, and hence subject to change without
112 notice. The schema is loaded automatically by the overlay.
113 The schema includes a number of object classes and associated attribute
115 types as described below.
116 There is a basic auditObject class from which two additional classes,
118 auditReadObject and auditWriteObject are derived. Object classes for
119 each type of LDAP operation are further derived from these classes.
120 This object class hierarchy is designed to allow flexible yet efficient
121 searches of the log based on either a specific operation type's class,
122 or on more general classifications. The definition of the auditObject
123 class is as follows:
124 ( 1.3.6.1.4.1.4203.666.11.5.2.1
126 NAME 'auditObject'
127 DESC 'OpenLDAP request auditing'
128 SUP top STRUCTURAL
129 MUST ( reqStart $ reqType $ reqSession )
130 MAY ( reqDN $ reqAuthzID $ reqControls $ reqRespControls $
131 reqEnd $ reqResult $ reqMessage $ reqReferral ) )
132 Note that all of the OIDs used in the logging schema currently reside
134 under the OpenLDAP Experimental branch. It is anticipated that they
135 will migrate to a Standard branch in the future.
136 An overview of the attributes follows: reqStart and reqEnd provide the
138 start and end time of the operation, respectively. They use general‐
139 izedTime syntax. The reqStart attribute is also used as the RDN for
140 each log entry.
141 The reqType attribute is a simple string containing the type of opera‐
143 tion being logged, e.g. add, delete, search, etc. For extended opera‐
144 tions, the type also includes the OID of the extended operation, e.g.
145 extended(1.1.1.1)
146 The reqSession attribute is an implementation-specific identifier that
148 is common to all the operations associated with the same LDAP session.
149 Currently this is slapd's internal connection ID, stored in decimal.
150 The reqDN attribute is the distinguishedName of the target of the oper‐
152 ation. E.g., for a Bind request, this is the Bind DN. For an Add re‐
153 quest, this is the DN of the entry being added. For a Search request,
154 this is the base DN of the search.
155 The reqAuthzID attribute is the distinguishedName of the user that per‐
157 formed the operation. This will usually be the same name as was estab‐
158 lished at the start of a session by a Bind request (if any) but may be
159 altered in various circumstances.
160 The reqControls and reqRespControls attributes carry any controls sent
162 by the client on the request and returned by the server in the re‐
163 sponse, respectively. The attribute values are just uninterpreted octet
164 strings.
165 The reqResult attribute is the numeric LDAP result code of the opera‐
167 tion, indicating either success or a particular LDAP error code. An er‐
168 ror code may be accompanied by a text error message which will be
169 recorded in the reqMessage attribute.
170 The reqReferral attribute carries any referrals that were returned with
172 the result of the request.
173 Operation-specific classes are defined with additional attributes to
175 carry all of the relevant parameters associated with the operation:
176 ( 1.3.6.1.4.1.4203.666.11.5.2.4
179 NAME 'auditAbandon'
180 DESC 'Abandon operation'
181 SUP auditObject STRUCTURAL
182 MUST reqId )
183 For the Abandon operation the reqId attribute contains the message ID
185 of the request that was abandoned.
186 ( 1.3.6.1.4.1.4203.666.11.5.2.5
189 NAME 'auditAdd'
190 DESC 'Add operation'
191 SUP auditWriteObject STRUCTURAL
192 MUST reqMod )
193 The Add class inherits from the auditWriteObject class. The Add and
195 Modify classes are very similar. The reqMod attribute carries all of
196 the attributes of the original entry being added. (Or in the case of a
197 Modify operation, all of the modifications being performed.) The values
198 are formatted as
199 attribute:<+|-|=|#> [ value]
200 Where '+' indicates an Add of a value, '-' for Delete, '=' for Replace,
201 and '#' for Increment. In an Add operation, all of the reqMod values
202 will have the '+' designator.
203 ( 1.3.6.1.4.1.4203.666.11.5.2.6
205 NAME 'auditBind'
206 DESC 'Bind operation'
207 SUP auditObject STRUCTURAL
208 MUST ( reqVersion $ reqMethod ) )
209 The Bind class includes the reqVersion attribute which contains the
211 LDAP protocol version specified in the Bind as well as the reqMethod
212 attribute which contains the Bind Method used in the Bind. This will be
213 the string SIMPLE for LDAP Simple Binds or SASL(<mech>) for SASL Binds.
214 Note that unless configured as a global overlay, only Simple Binds us‐
215 ing DNs that reside in the current database will be logged.
216 ( 1.3.6.1.4.1.4203.666.11.5.2.7
219 NAME 'auditCompare'
220 DESC 'Compare operation'
221 SUP auditObject STRUCTURAL
222 MUST reqAssertion )
223 For the Compare operation the reqAssertion attribute carries the Attri‐
225 bute Value Assertion used in the compare request.
226 ( 1.3.6.1.4.1.4203.666.11.5.2.8
229 NAME 'auditDelete'
230 DESC 'Delete operation'
231 SUP auditWriteObject STRUCTURAL
232 MAY reqOld )
233 The Delete operation needs no further parameters. However, the reqOld
235 attribute may optionally be used to record the contents of the entry
236 prior to its deletion. The values are formatted as
237 attribute: value
238 The reqOld attribute is only populated if the entry being deleted
239 matches the configured logold filter.
240 ( 1.3.6.1.4.1.4203.666.11.5.2.9
243 NAME 'auditModify'
244 DESC 'Modify operation'
245 SUP auditWriteObject STRUCTURAL
246 MAY reqOld MUST reqMod )
247 The Modify operation contains a description of modifications in the re‐
249 qMod attribute, which was already described above in the Add operation.
250 It may optionally contain the previous contents of any modified at‐
251 tributes in the reqOld attribute, using the same format as described
252 above for the Delete operation. The reqOld attribute is only populated
253 if the entry being modified matches the configured logold filter.
254 ( 1.3.6.1.4.1.4203.666.11.5.2.10
257 NAME 'auditModRDN'
258 DESC 'ModRDN operation'
259 SUP auditWriteObject STRUCTURAL
260 MUST ( reqNewRDN $ reqDeleteOldRDN )
261 MAY ( reqNewSuperior $ reqOld ) )
262 The ModRDN class uses the reqNewRDN attribute to carry the new RDN of
264 the request. The reqDeleteOldRDN attribute is a Boolean value showing
265 TRUE if the old RDN was deleted from the entry, or FALSE if the old RDN
266 was preserved. The reqNewSuperior attribute carries the DN of the new
267 parent entry if the request specified the new parent. The reqOld at‐
268 tribute is only populated if the entry being modified matches the con‐
269 figured logold filter and contains attributes in the logoldattr list.
270 ( 1.3.6.1.4.1.4203.666.11.5.2.11
273 NAME 'auditSearch'
274 DESC 'Search operation'
275 SUP auditReadObject STRUCTURAL
276 MUST ( reqScope $ reqDerefAliases $ reqAttrsOnly )
277 MAY ( reqFilter $ reqAttr $ reqEntries $ reqSizeLimit $
278 reqTimeLimit ) )
279 For the Search class the reqScope attribute contains the scope of the
281 original search request, using the values specified for the LDAP URL
282 format. I.e. base, one, sub, or subord. The reqDerefAliases attribute
283 is one of never, finding, searching, or always, denoting how aliases
284 will be processed during the search. The reqAttrsOnly attribute is a
285 Boolean value showing TRUE if only attribute names were requested, or
286 FALSE if attributes and their values were requested. The reqFilter at‐
287 tribute carries the filter used in the search request. The reqAttr at‐
288 tribute lists the requested attributes if specific attributes were re‐
289 quested. The reqEntries attribute is the integer count of how many en‐
290 tries were returned by this search request. The reqSizeLimit and req‐
291 TimeLimit attributes indicate what limits were requested on the search
292 operation.
293 ( 1.3.6.1.4.1.4203.666.11.5.2.12
296 NAME 'auditExtended'
297 DESC 'Extended operation'
298 SUP auditObject STRUCTURAL
299 MAY reqData )
300 The Extended class represents an LDAP Extended Operation. As noted
302 above, the actual OID of the operation is included in the reqType at‐
303 tribute of the parent class. If any optional data was provided with the
304 request, it will be contained in the reqData attribute as an uninter‐
305 preted octet string.
306
309 The Access Log implemented by this overlay may be used for a variety of
310 other tasks, e.g. as a ChangeLog for a replication mechanism, as well
311 as for security/audit logging purposes.
312
315 /etc/openldap/slapd.conf
316 default slapd configuration file
317
319 slapd.conf(5), slapd-config(5).
320
323 This module was written in 2005 by Howard Chu of Symas Corporation.
324OpenLDAP 2021/06/03 SLAPO-ACCESSLOG(5)