- Avoids copying std::shared_ptr when lifetime of the RuleMessage
is controlled by the caller.
- The RuleMessage instance is created in RuleWithActions::evaluate and
then used to call the overloaded version of this method that is
specialized by subclasses.
- Once the call to the overloaded method returns, the std::shared_ptr
is destroyed as it's not stored by any of the callers, so it can
be replaced with a stack variable and avoid paying the cost of
copying the std::shared_ptr (and its control block that is
guaranteed to be thread-safe and thus is not a straightforward
pointer copy)
- Introduced RuleMessage::reset because this is required by
RuleWithActions::performLogging when it's not the 'last log', the rule
has multimatch and it's to be logged.
- The current version is creating allocating another instance of
RuleMessage on the heap to copy the Rule & Transaction related state
while all the other members in the RuleMessage are set to their
default values.
- The new version leverages the existent, unused and incomplete
function 'clean' (renamed as 'reset') to do this on the current
instance.
- Notice that the current code preserves the value of m_saveMessage,
so 'reset' provides an argument for the caller to control whether
this member should be reinitialized.
- Leverage delegating constructor to avoid code duplication between the
two available Transaction constructors.
- The constructor without 'id' argument delegates to the one that
receives it by providing `nullptr` as a value, which is used to
flag that an id needs to be generated.
- Simplified constructor by removing member initialization where the
default constructor will be invoked.
- Because the lifetime of the RuleMessage instances do not extend beyond
the lifetime of the enclosing RuleWithActions & Transaction,
RuleMessage can just reference it and simplify its definition.
- Additionally, make the references const to show that it doesn't modify it.
- Replace RuleMessage copy constructor with default implementations.
- Removed unused RuleMessage assignment operator (which cannot be implemented
now that it has reference members).
- Removed constructor from RuleMessage pointer.
- Addressed Sonarcloud suggestions: Do not use the constructor's
initializer list for data member "xxx". Use the in-class initializer
instead.
- The previous version of this function was doing three strdup copies
to parse the pm content. The updated version only copies the value
once (in order not to modify the Operator's m_param member variable),
and then performs the updates inline.
- Binary parsing was broken because digits were not compared as
characters.
- Fail parsing when an invalid hex character is found.
- Error message in parse_pm_content would reference freed memory if
accessed by caller. Removed anyway because it was unused.
- Some of the Transformation classes would initialize their Action's
action_kind using the default (using Transformation constructor
without an action_kind parameter).
- Others, however, would use that constructor and initialize action_kind
manually in their constructor, but setting the default value
(RunTimeBeforeMatchAttemptKind = 1), which was redundant.
- Removed unused Transformation constructor to specify action_kind.
- Converted Action::Kind into an 'enum class' to require using the enum
constants (instead of integer values, which are difficult to track in
the codebase and change)
- This function already expects these arguments not to be null pointers,
doesn't validate them and just dereference them.
- In order to make this explicit and enforced by the compiler, they're
now passed as references.
- utils::urldecode_nonstrict_inplace decodes inplace so key & value,
which are values returned by utils::string::ssplit_pair can be
just be modified and do not need to be copied.
- Updated signature of utils::urldecode_nonstrict_inplace, as its
two callers already have std::string values.
- Use std::string in UrlEncode transformation, instead of manually
memory management. This avoids an additional copy after completing
encoding by just swapping the encoded value and the input.
- Removed inplace helper function from the class, as it's only
referenced by the implementation.
- Validate buffer size before accessing data. The previous
implementation would only check that there was a character available
in the buffer but could continue processing/reading characters from
an hex representation without checking bounds.
- Removed inplace & mytolower helper functions from the class, as
they're only referenced by the implementation.
- Removed duplicate VALID_HEX & ISODIGIT macros, already in
src/utils/string.h.
- Renamed Transformation::evaluate to Transformation::transform to avoid
confusion with Action's overload methods.
- Updated Transformation::transform signature to receive the value by
reference and perform the transformation inline, if possible.
- Some transformations still need to use a temporary std::string to
perform their work, and then copy the result back.
- Made Transformation::transform methods const and updated Transaction
parameter to be const.
- Transaction parameter could not be removed because it's used by just
a single transformation, UrlDecodeUni.
- Removed std::string Action::evaluate(const std::string &exp,
Transaction *transaction); which was only implemented by
Transformation but was not used from the base class, but only after
downcasting to Transformation, so it can just be declared there (and
not pollute other actions with a default member implementation -that
does nothing- which is never called).
