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fix: improve fluent-bit binary detection regex pattern (#3701)

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* fix: improve fluent-bit binary detection regex pattern

This fixes issue #3133 by updating the regex pattern for fluent-bit binary detection
to better handle ANSI escape sequences and multiple null bytes between the version
string and "Fluent Bit" text. The change also makes the %s format specifier optional,
supporting all variations in fluent-bit binary signatures.

Signed-off-by: Alan Pope <alan.pope@anchore.com>

* test: add fluent-bit 1.7.0-dev-3 test fixture for issue #3133

Signed-off-by: Alan Pope <alan.pope@anchore.com>

---------

Signed-off-by: Alan Pope <alan.pope@anchore.com>
This commit is contained in:
Alan Pope
2025-03-07 14:56:37 +00:00
committed by GitHub
parent 7571f8dfba
commit c687b7bfa5
4 changed files with 20 additions and 1 deletions
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syft/pkg/cataloger/binary/classifiers.go
+2 -1
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@@ -572,7 +572,8 @@ func DefaultClassifiers() []Classifier {
// [NUL]3.0.2[NUL]%sFluent Bit
// [NUL]2.2.3[NUL]Fluent Bit
// [NUL]2.2.1[NUL][NUL][NUL]Fluent Bit
`\x00(?P<version>[0-9]+\.[0-9]+\.[0-9]+)\x00[^\d]*Fluent`,
// [NUL]1.7.0[NUL]\x1b[1m[NUL]%sFluent Bit (versions 1.7.0-dev-3 through 1.7.0-dev-9 and 1.7.0-rc4 through 1.7.0-rc8)
`\x00(?P<version>[0-9]+\.[0-9]+\.[0-9]+)\x00(\x1b\[1m\x00|\x00\x00)?(%s)?Fluent`,
),
Package: "fluent-bit",
PURL: mustPURL("pkg:github/fluent/fluent-bit@version"),