e7f439bc2f
Convert capture file regex search to PCRE2.
...
Replace the use of the obsolete GRegex with PCRE2.
Fixes a crash reported in issue #17500 .
2022-07-27 11:21:03 +00:00
47348ae598
dfilter: Add support for literal strings with null bytes
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Before:
Filter: frame matches "abc\x00def"
dftest: \x00 (NUL byte) cannot be used with a regular string.
frame matches "abc\x00def"
^~~~
Filter: _ws.ftypes.string == "a string with a \0 byte"
dftest: \0 (NUL byte) cannot be used with a regular string.
_ws.ftypes.string == "a string with a \0 byte"
^~
After:
Filter: frame matches "abc\x00def"
Syntax tree:
0 TEST_MATCHES:
1 FIELD(frame)
1 PCRE(abc\0def)
Instructions:
00000 READ_TREE frame -> reg#0
00001 IF_FALSE_GOTO 3
00002 ANY_MATCHES reg#0 matches abc\0def
00003 RETURN
Filter: _ws.ftypes.string == "a string with a \0 byte"
Syntax tree:
0 TEST_ANY_EQ:
1 FIELD(_ws.ftypes.string)
1 FVALUE("a string with a \0 byte" <FT_STRING>)
Instructions:
00000 READ_TREE _ws.ftypes.string -> reg#0
00001 IF_FALSE_GOTO 3
00002 ANY_EQ reg#0 == "a string with a \0 byte" <FT_STRING>
00003 RETURN
Fixes issue #16156 .
2022-06-21 15:10:08 +00:00
de103394fe
dfilter: Make regex matches case insensitive by default
2022-06-08 12:17:22 +01:00
36d5aad962
wsutil: Split ws_regex_matches() into two functions
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Split ws_regex_matches() into two functions with better semantics
and remove the WS_REGEX_ZERO_TERMINATED symbol.
ws_regex_matches() matches zero terminated strings.
ws_regex_matches_length() matches a string length in code units.
2021-12-21 00:40:02 +00:00
fb0e1a4907
regex: Remove requirement for ssize_t
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The type ssize_t is not available on Windows. Because this is
used in the public API we must provide a definition for it.
To avoid having to add a header to fix this use a size_t in
the API instead, and assign SIZE_MAX to represent a null
terminated string.
2021-12-13 23:57:32 +00:00
b30a2112e8
regex: Prefer C99/POSIX types
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Replace 'gssize' with 'ssize_t'.
Add a CMake configure check for ssize_t.
Fix missing "config.h" includes.
2021-11-15 02:41:59 +00:00
b59980bbff
regex: Add a diagnostic message
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Add a debug log message if pcre2_match() errors out.
Minor optimization with the use of pcre2_match_data_create().
Minor cleanup.
2021-11-14 23:05:53 +00:00
274531820a
Move regex code to wsutil
2021-11-14 21:00:59 +00:00
João Valverde