* Clarify docs of raw_alignment
* Set Go and Rust string encoding for binary string search.
* Add detailed doxygen about string search in bin plugins.
* Add the number string code points as detail to string search hits.
* Add helper to check if string encoding needs scanning.
* Add helper to generate a string wildcard pattern.
The pattern is supposed to match any human readable string.
Before the string search refactor there was no explicit definition
what characters mark the end of a string and which ones don't.
This pattern should match strings of the old interpretation.
* Enable the RzBin plugin to search strings with direct matching instead of scanning.
This significantly speeds up the string search when a binary is opened.
The prerequisite is that the plugin specifies the string encoding.
* Enforce UTF-8 for initial string search.
* Add custom string search for PE files.
* Clean up and document rz_utf8_encode
* Don't demote explicit UTF-8 encoding to ASCII.
* Increase min JIT stack size due to not reproducable search results.
* Simplify wildcard regex pattern.
* Add speed up search for unaligned buffers and string encodings.
The new search mode adjusts the buffer's data (swap endianness, fix alignment)
so the buffer can be searched with PCRE2 without scanning.
It also enables RzRegexMulti opbjects to have their own JIT stack.
This makes them usable in a thread safe manner.
* Fix regex compilation on big endian systems
* Update the scanning check (UTF needs no scanning anymore).
* Make checks against defined Unicode points optional
* Allow to decode UTF-16 without writing the result.
* Remove PCRE2_NO_UTF_CHECK as default, since it can lead to undefined behavior.
* First refactor regex to support utf16 and utf32
* Add UTF-16-BE encoding function
* Add UTF-8 counting helper functions.
- One for counting the number of Unicode code points.
- The other to get the number of bytes required to represent the given UTF-8 string in UTF-16.
* Remove unused code
* Add UTF-8 to UTF-16 conversion function.
* Add type annotations
* Implement utf8 to utf32 string conversion
* Add UTF-16/32 versions of all other necessary regex functions for str search.
* Another regex refactor for utf16/32
* Add UTF16/32 regex matching tests.
* Implement still segfaulting (possibly JIT double usage) regex search.
* Duplicate match_first functions to reduce necessary branch predictions.
* Reduce number of required branches for encoding UTF16/32 to one.
* Duplicate match_all_internal functions to reduce necessary branch predictions.
* Fix too early free
* Only allocate match vector when needed.
* Fix: use code point size of buffer.
* Add missing return
* Normalize pointers to UTF16/32 strings to use proper code point with
* Also replace spaces with in utf16/32
* Add an additional host endian tests for UTF16/32 string encodings.
* Ensure thread savety.
JIT compiled patterns need to be owned by a single thread.
For the search we need to clone it.
JIT matching structures are optionally cloned as well.
* Enforce NO_UTF_CHECK in regex search.
This improves performance and currently is
default because we always match on binary data.
* Fix matching of UTF strings which are not suported by direct buffer matching.
PCRE2 only supports matching against memory which is aligned
to a code point width of the encoding.
These changes prevent taking the fast (direct matching with PCRE2) path
and use the slow string search path if the alignment doesn't match
the UTF string encoding.
To not complicate the change and additional alignment member
is added to each searched string in the search collection.
* Create search hit description on the stack
* Unset complete JIT matching if user provided custom jflags.
* Document what passing NULL to copy function pointers does.
* Replace the retarded idea of tracking offsets with a hashmap with a linear buffer.
This improves performance something like 10x.
* Remove const for the non-JIT builds.
* Remove additional flags for skip checking.
It is not needed because each decoded character is checked for printablity below anyways.
* Enfore no setup of IO mem with 0xff
* Fix: Set JIT complete flag for multi regex patterns
* Fix heap.
* Add note about worsed performance path.
* Fix unit test with string terminated by undefined code point.
* Run clang-format
* Fix order of arguments
* Add warning about string search with encoding=guess to tests.
* Fix string lengths, they no longer count the final invalid code point.
* Fix endian macro on Windows
* Fix NULL dereference
* Fix number tests
* Use endianness check not dependent on stdbit
* Fix type annotations.
* Reintroduce rz_str_len_utf8char
* Fix command description.
* Fix and unify RZ_SYS_ENDIAN macros.
- Don't allow unhandled architectures anymore.
- Check endianness for Sparc and PPC using non GCC/Clang compilers.
- Fix several endianness checks using the value instead of the macros.
* Fix tests
* Apply review comments.
- rz_regex_new_bytes() doesn't set the UTF flag and allows to match raw bytes.
- rz_regex_match_all_overlap() also matches overlapping results.
- rz_regex_parse_flag_desc() parses a string of characters and returns regex flags according to the chars in it.
* Replace OpenBSD regex library with PCRE2.
PCRE2 has way better performance than the OpenBSD
library (something around 20 times faster).
The following flags are enabled for every pattern:
- PCRE2_UTF
- PCRE2_MATCH_INVALID_UTF
- PCRE2_NO_UTF_CHECK
All the others are optional.
Changes made:
- Adds PCRE2 as subproject.
- Changes the API away from POSIX to PCRE2.
- Edits many regex patterns because:
- ' ' is skipped in patterns, if the EXTENDED flag is set for matching. '\s' must be set now.
- '.' doesn't match newlines by default.
- Changes the API so matches and their groups are bundled into PVectors.
- Moves the regex component to rz_util.
* Fix cross build - add copy of PCRE2 dependecy
Meson currently doesn't support subprojects to be native and non-native at the same time.
See: https://github.com/mesonbuild/meson/issues/10947
Unfortunately, sdb depends on rz_util which in turn depends on PCRE2.
Excluding PCRE2 from the native build makes linking of rz_util not possible anymore.
Adding it, will make Meson complain that the dependencies cannot be mixed.
Hence, we compile a copy of PCRE2 for the native build if required.
