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The broxygen-generated files now live in the git repo, have tests that check that they are up-to-date, and a script to re-generate them on-demand.
195 lines
7.1 KiB
ReStructuredText
195 lines
7.1 KiB
ReStructuredText
:tocdepth: 3
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policy/protocols/ssl/known-certs.bro
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====================================
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.. bro:namespace:: Known
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Log information about certificates while attempting to avoid duplicate
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logging.
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:Namespace: Known
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:Imports: :doc:`base/files/x509 </scripts/base/files/x509/index>`, :doc:`base/frameworks/cluster </scripts/base/frameworks/cluster/index>`, :doc:`base/protocols/ssl </scripts/base/protocols/ssl/index>`, :doc:`base/utils/directions-and-hosts.bro </scripts/base/utils/directions-and-hosts.bro>`
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Summary
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~~~~~~~
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Runtime Options
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###############
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============================================================================ ===================================================================
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:bro:id:`Known::cert_store_expiry`: :bro:type:`interval` :bro:attr:`&redef` The expiry interval of new entries in :bro:see:`Known::cert_store`.
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:bro:id:`Known::cert_store_timeout`: :bro:type:`interval` :bro:attr:`&redef` The timeout interval to use for operations against
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:bro:see:`Known::cert_store`.
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:bro:id:`Known::cert_tracking`: :bro:type:`Host` :bro:attr:`&redef` The certificates whose existence should be logged and tracked.
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============================================================================ ===================================================================
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Redefinable Options
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###################
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======================================================================= ==============================================================
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:bro:id:`Known::cert_store_name`: :bro:type:`string` :bro:attr:`&redef` The Broker topic name to use for :bro:see:`Known::cert_store`.
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:bro:id:`Known::use_cert_store`: :bro:type:`bool` :bro:attr:`&redef` Toggles between different implementations of this script.
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======================================================================= ==============================================================
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State Variables
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###############
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=================================================================================================== ====================================================================
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:bro:id:`Known::cert_store`: :bro:type:`Cluster::StoreInfo` Holds the set of all known certificates.
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:bro:id:`Known::certs`: :bro:type:`set` :bro:attr:`&create_expire` = ``1.0 day`` :bro:attr:`&redef` The set of all known certificates to store for preventing duplicate
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logging.
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=================================================================================================== ====================================================================
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Types
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#####
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======================================================= =
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:bro:type:`Known::AddrCertHashPair`: :bro:type:`record`
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:bro:type:`Known::CertsInfo`: :bro:type:`record`
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======================================================= =
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Redefinitions
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#############
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===================================== =
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:bro:type:`Log::ID`: :bro:type:`enum`
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===================================== =
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Events
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######
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=================================================== =====================================================================
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:bro:id:`Known::log_known_certs`: :bro:type:`event` Event that can be handled to access the loggable record as it is sent
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on to the logging framework.
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=================================================== =====================================================================
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Detailed Interface
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~~~~~~~~~~~~~~~~~~
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Runtime Options
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###############
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.. bro:id:: Known::cert_store_expiry
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:Type: :bro:type:`interval`
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:Attributes: :bro:attr:`&redef`
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:Default: ``1.0 day``
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The expiry interval of new entries in :bro:see:`Known::cert_store`.
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This also changes the interval at which certs get logged.
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.. bro:id:: Known::cert_store_timeout
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:Type: :bro:type:`interval`
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:Attributes: :bro:attr:`&redef`
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:Default: ``15.0 secs``
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The timeout interval to use for operations against
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:bro:see:`Known::cert_store`.
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.. bro:id:: Known::cert_tracking
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:Type: :bro:type:`Host`
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:Attributes: :bro:attr:`&redef`
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:Default: ``ALL_HOSTS``
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The certificates whose existence should be logged and tracked.
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Choices are: LOCAL_HOSTS, REMOTE_HOSTS, ALL_HOSTS, NO_HOSTS.
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Redefinable Options
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###################
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.. bro:id:: Known::cert_store_name
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:Type: :bro:type:`string`
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:Attributes: :bro:attr:`&redef`
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:Default: ``"bro/known/certs"``
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The Broker topic name to use for :bro:see:`Known::cert_store`.
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.. bro:id:: Known::use_cert_store
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:Type: :bro:type:`bool`
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:Attributes: :bro:attr:`&redef`
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:Default: ``T``
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Toggles between different implementations of this script.
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When true, use a Broker data store, else use a regular Bro set
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with keys uniformly distributed over proxy nodes in cluster
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operation.
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State Variables
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###############
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.. bro:id:: Known::cert_store
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:Type: :bro:type:`Cluster::StoreInfo`
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:Default:
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::
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{
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name=<uninitialized>
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store=<uninitialized>
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master_node=""
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master=F
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backend=Broker::MEMORY
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options=[sqlite=[path=""], rocksdb=[path=""]]
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clone_resync_interval=10.0 secs
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clone_stale_interval=5.0 mins
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clone_mutation_buffer_interval=2.0 mins
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}
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Holds the set of all known certificates. Keys in the store are of
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type :bro:type:`Known::AddrCertHashPair` and their associated value is
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always the boolean value of "true".
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.. bro:id:: Known::certs
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:Type: :bro:type:`set` [:bro:type:`addr`, :bro:type:`string`]
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:Attributes: :bro:attr:`&create_expire` = ``1.0 day`` :bro:attr:`&redef`
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:Default: ``{}``
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The set of all known certificates to store for preventing duplicate
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logging. It can also be used from other scripts to
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inspect if a certificate has been seen in use. The string value
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in the set is for storing the DER formatted certificate' SHA1 hash.
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In cluster operation, this set is uniformly distributed across
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proxy nodes.
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Types
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#####
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.. bro:type:: Known::AddrCertHashPair
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:Type: :bro:type:`record`
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host: :bro:type:`addr`
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hash: :bro:type:`string`
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.. bro:type:: Known::CertsInfo
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:Type: :bro:type:`record`
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ts: :bro:type:`time` :bro:attr:`&log`
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The timestamp when the certificate was detected.
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host: :bro:type:`addr` :bro:attr:`&log`
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The address that offered the certificate.
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port_num: :bro:type:`port` :bro:attr:`&log` :bro:attr:`&optional`
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If the certificate was handed out by a server, this is the
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port that the server was listening on.
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subject: :bro:type:`string` :bro:attr:`&log` :bro:attr:`&optional`
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Certificate subject.
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issuer_subject: :bro:type:`string` :bro:attr:`&log` :bro:attr:`&optional`
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Certificate issuer subject.
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serial: :bro:type:`string` :bro:attr:`&log` :bro:attr:`&optional`
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Serial number for the certificate.
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Events
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######
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.. bro:id:: Known::log_known_certs
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:Type: :bro:type:`event` (rec: :bro:type:`Known::CertsInfo`)
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Event that can be handled to access the loggable record as it is sent
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on to the logging framework.
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