This caps size of payload strings within mqtt_publish events and
mqtt_publish.log files. A new "payload_len" field in the log file
shows the real payload size in cases where it may have been truncated.
This also required updating a test that required a root-certificate that
was removed from the Mozilla store - the test now directly includes that
specific root-cert.
Now, in addition to setting thresholds for bytes and packet, one can set
a threshold for connection duration. Note that the threshold event is
only raised once the next packet in the connection is seen.
This also fixes a small pre-existing bug, in which a bunch of warnings
were raised if someone just used the lower-level functions without going
through the higher-level scripting API.
* origin/topic/seth/mqtt:
Bug fixes and test baseline updates
Fix an issue with bro_init -> zeek_init
MQTT Analyzer heavily updated and ported from the analyzer originally by Supriya Kumar
Adjustments during merge:
* Minor whitespace cleanups
* Some bro to zeek renaming
* Fixed the parsing of unsubscribe messages to generate an event for each topic
* origin/topic/dev/non-ascii-logging:
Removed Policy Script for UTF-8 Logs
Commented out UTF-8 Script in Test All Policy
Minor Style Tweak
Use getNumBytesForUTF8 method to determine number of bytes
Added Jon's test cases as unit tests
Prioritizes escaping predefined Escape Sequences over Unescaping UTF-8 Sequences
Added additional check to confirm anything unescaping is a multibyte UTF-8 sequence, addressing the test case Jon brought up
Added optional script and redef bool to enable utf-8 in ASCII logs
Initial Commit, removed std::isprint check to escape
Made minor code format and logic adjustments during merge.
This analyzer generates three logs to fully display what is happening over the MQTT connection.
- mqtt_connect.log
- mqtt_subscribe.log
- mqtt_publish.log
At this time it only supports MQTT 3.1 and 3.1.1
* origin/topic/timw/cleaner-utf8:
GHI-486: Switch over to using LLVM utf8-checking code to better validate characters
I addressed a buffer over-read during the merge and added test-cases for
it.
This allows one to tune the number of protocol violations to tolerate
from any given analyzer type before just disabling a given instance
of it.
Also removes the "disabled_aids" field from the DPD::Info record
since it serves no purpose: in this case, calling disable_analyzer
multiple times for the same analyzer is a no-op.
* origin/topic/timw/150-to-json:
Update submodules for JSON work
Update unit tests for JSON logger to match new output
Modify JSON log writer to use the external JSON library
Update unit test output to match json.zeek being deprecated and slight format changes to JSON output
Add proper JSON serialization via C++, deprecate json.zeek
Add new method for escaping UTF8 strings for JSON output
Move do_sub method from zeek.bif to StringVal class method
Move record_fields method from zeek.bif to Val class method
Add ToStdString method for StringVal
In the past they were processed on the manager - which requires big
records to be sent around.
This has a potential of incompatibilities if someone relied on global
state for notice processing.
GH-214
* 'rdp_client_cluster_data' of https://github.com/neslog/zeek:
Fixing types.
Correcting types.
Removing misc data from Client Cluster data trying to assign values.
Adding options field to RDP::ClientChannelDef Adding Client Cluster Data
Adjustments:
- Reformatting
- Added comments
- Changed the REDIRECTED_SESSIONID_FIELD_VALID field to a bool
Only used in one event, without any way to use the opaque for anything
else. At this point this just seems like a complication that has no
reason to be there.
* 'ntp-rewrite' of https://github.com/mauropalumbo75/zeek: (25 commits)
update tests baseline
Apply requested changes: - file dpd.sig and TODO comments for signature protocol detection removed - missing doc field filled in events.bif - rename OpCode and ReqCode fields into op_code and req_code respectively - removed unnecessary child method in NTP.h/.cc - main.zeek and ntp-protocol.pac reformatted
minor changes in the documentation
fix some initializations
fix wrong assignment of control key_id/crypto_checksum
code clean up
add extension fields parsing
add extended mac field with 20 byte digest (+4 byte key id)
update tests and add a new one for key_id and mac
fix auth field (key_id and mac) in standard and control msg
remove old NTP record in init-bare.zeek
fix key_id and digest (WIP)
fix wrong Assign with reference_id
add tests for ntp protocol (finished)
add tests for ntp protocol (WIP)
fix problem with time vals
add ntp records to init-bare.zeek
update ntp analyzer to val_mgr
extend and refact script-side of NTP analyzer
extend and refactor several fields
...
SPF response records are identical to TXT records in structure, and
can be parsed and interpreted the same way. However, they have a
different RR type, so they would generate weird events and not be
parsed by Zeek before this change.
Even though they're the same as TXT records from a protocol stance, I
created a new event type (dns_SPF_reply), and call the records out as
SPF in the logs, instead of as TXT records, since the distinction
could be important for detection purposes.
SPF records have been obsoleted, but continue to be seen in the wild.
* 'rdp_client_security' of https://github.com/neslog/zeek:
Adding comments specific to client security data in record definition.
Cleaning up indentations and return true.
Adding record to init-bare
Adding client_security_data to the analyzer.
I added a unit test.
By using a consistent timestamp. That avoids rare chances of sqlite
output from rounding the current time into such a form that happens
to bypass the timestamp canonifier script (whenever it happened to
land on a whole or tenth second).
* "bro_is_terminating" is now "zeek_is_terminating"
* "bro_version" is now "zeek_version"
The old function names still exist for now, but are deprecated.
These are no longer loaded by default due to the performance impact they
cause simply by being loaded (they have event handlers for commonly
generated events) and they aren't generally useful enough to justify it.
* 'master' of https://github.com/ZekeMedley/zeek:
Use the right delete and improve the leak test. Increases the size of the table being loaded in the pattern leak test and uses the right delete method.
Fix formatting.
Fix memory leak and add test.
Add pattern support to input framework.
This one adds a separate new case that has to be parsed differently - if
a hello-retry-request is sent, only the namedgroup is sent - without the
additional key material.
Support for the legacy extension is retained.
