anonymous-functions, their closures, can now be sent over broker.
In order to send an anonymous function the receiver must have parsed
a definition of the functon, but it need not to have been evaluated.
See testing/btest/language/closure-sending.zeek for an example of how
this can be done.
This also sends their closures as well as the closures of regular
functions.
* 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
For broker.log and cluster.log: there was a race condition. A worker's
first IOSource that it processes is potentially Broker if there were
no packets available yet and thread scheduling happens to work out
such that network connections (inside CAF threads) become established
before we enter the main I/O loop. Such peering establishments would
generate logs with timestamp 0 as there was not yet any code path
taken that would update network_time.
For reporter.log: any non-worker (packet-processing) node would just
unnecessarily use a timestamp of 0 for their reporter messages.
- rotate_file
- rotate_file_by_name
- calc_next_rotate
These still have use-cases even though no longer used for our logging
functionality. E.g. rotate_file_by_name may be used to rotate
pcap dump files.
Also the log_rotate_base_time option was marked deprecated, but still
used in the new logging framework.
Currently, creating a StringVal from a std::string did not work with
data that contains \0 characters. This easy fix changes this - and
should also lead to a small speed increase for code using this
constructor.
This obviously means that more data might copied now in some cases that
were previously cut off at the first 0-byte. Our test-suite did not
reveal any such cases.
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
The default value of an ID is now truly the one used to initialize it,
unaltered by any subsequent redefs.
Redefs are now shown separately, along with the expression that
modifies the ID's value.
* 'paraglob' of https://github.com/ZekeMedley/zeek:
Add leak test to paraglob.
Catch paraglob serialization errors in DoClone.
Update paraglob serialization.
Stop execution on paraglob error.
Update paraglob submodule
Change C++11 detection in paraglob.
Make paraglob serializable and copyable.
Initial paraglob integration.
I made a bunch of small changes:
* paraglob now deals better with \0 characters
* I rolled back the changes to Binary Serialization format,
* there were some small formatting issue
* the error output was slightly unsafe
* build_unique is now in util.h.
and perhaps a few more small things.
* origin/topic/timw/171-deprecation-warnings:
GH-171: support warning messages alongside deprecated attributes
Made a minor tweak to give a better error message when using
&deprecated= with something other than a string literal expression.
* '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
This allows anonymous functions in Zeek to capture their closures.
they do so by creating a copy of their enclosing frame and joining
that with their own frame.
There is no way to specify what specific items to capture from the
closure like C++, nor is there a nonlocal keyword like Python.
Attemptying to declare a local variable that has already been caught
by the closure will error nicely. At the worst this is an inconvenience
for people who are using lambdas which use the same variable names
as their closures.
As a result of functions copying their enclosing frames there is no
way for a function with a closure to reach back up and modify the
state of the frame that it was created in. This lets functions that
generate functions work as expected. The function can reach back and
modify its copy of the frame that it is captured in though.
Implementation wise this is done by creating two new subclasses in
Zeek. The first is a LambdaExpression which can be thought of as a
function generator. It gathers all of the ingredients for a function
at parse time, and then when evaluated creats a new version of that
function with the frame it is being evaluated in as a closure. The
second subclass is a ClosureFrame. This acts for most intents and
purposes like a regular Frame, but it routes lookups of values to its
closure as needed.
