This commit adds a new transform -- pcrexform -- that applies a regular
expression to the transformation buffer. If an expression was captured,
that is output to the transformation buffer. Otherwise, the
transformation buffer is unchanged.
This commit adds support for transform-specific options. During Setup,
transforms have the signature string available for options detection.
When a transform detects an option, it should convert the option into an
internal format and supply a pointer to this format as the last argument
to DetectSignatureAddTransform.
Transforms that support options must provide a function in their
Sigmatch table entry. When the transform is freed, a pointer to the
internal format of the option is passed to this function.
- Fix relative_offset keyword option to be relative in regards to the
last content match
- Change relative_offset to int32_t with bounds check to allow the full
range of the packet buffer size (uint16_t)
- Added checks for over/underflows
- Changed the offset type to uint16_t because the offset is applied to
the payload length, which is a uint16_t
- Adjusted test cases to work relative to the content match
- Added test case to verify bounds
Clang's build in travis-ci is actually failing because of this error:
output-json-alert.c:476:40: error: missing field 'state_index' initializer
[-Werror,-Wmissing-field-initializers]
JsonBuilderMark mark = { 0 };
Previously a single handle to the FlowStream (which is used to program
flows to the card) was shared between the threads. This resulted
in contention between the threads where sometimes programming the flow would
silently fail.
For example, to use suricata-verify pr #239:
suricata-verify-pr: 239
Also update the pull request template to contain the available
parameters that can be set.
This is to prepare for JsonBuilder conversion where we can't
overwrite an already set value. Here we prepare the addresses
to be logged in a struct, overwite with XFF if needed, then
log.
Convert alert Eve logging JsonBuilder. Currently
makes heavy use of JsonBuilder being able to log Jansson's json_t
which is a temporary measure until all protocols loggers can be
converted to JsonBuilder.
New functions that replace Jansson versions with JsonBuilder
variations use "Eve" instead of "JSON".
JsonBuilder is a Rust module for creating JSON output. Unlike
Jansson, the final JSON string is built up as items are added,
instead of building up an object tree and rendering it when
done.
The idea is to create a more efficient JSON serializer instead
of a flexible one.
Update the source/target logging to use the cached address info
instead of fetching it from the constructed json_t object.
This is required for migration to JsonBuilder which does not
have the ability to retrieve already set fields.
Currently the flow logger also logs app_proto information,
but not to the flow object, but instead to the root object
of the log record.
Refactor into 2 separate methods, one for the app_proto
and one for the flow, to make this more clear, as well
as make it easier to refactor for JsonBuilder as JsonBuilder
can only write to the currently open object.