* ruby/gemspec: resolve simple #{s.name}/#{s.version} interpolation
Reported in anchore/syft#4720: scanning projects that depend on gems
like formatador leaks literal Ruby interpolation into the emitted
SBOM, e.g.
"externalReferences": [
{ "url": "https://github.com/geemus/#{s.name}", "type": "website" }
]
because formatador.gemspec uses
s.homepage = "https://github.com/geemus/#{s.name}"
and parseGemSpecEntries reads the file as plain text instead of
evaluating it. The interpolation leaks through the captured homepage
field and on into any externalReferences entry the cataloger produces.
Dependency Track then rejects the whole BOM because '{' and '}' are
not valid IRI-reference characters (RFC 3987).
Add a post-parse pass that substitutes the common interpolation forms
(#{s.name}, #{gem.name}, #{name}, and the matching #{*.version}
variants) in captured string fields using values already parsed from
the same gemspec. Anything still containing '#{' after best-effort
substitution is an unresolvable Ruby expression, and for URL-like
fields (currently just homepage) we drop the field entirely so the
SBOM is always schema-valid; callers would rather miss a homepage URL
than emit one that breaks downstream tools.
Adds testdata/formatador.gemspec, a minimal real-world gemspec using
the #{s.name} pattern, plus a new parser test asserting that the
homepage field comes out fully resolved.
Fixes#4720
Signed-off-by: Sai Asish Y <say.apm35@gmail.com>
Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>
* improve test cases
Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>
---------
Signed-off-by: Sai Asish Y <say.apm35@gmail.com>
Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>
Co-authored-by: Alex Goodman <wagoodman@users.noreply.github.com>
Sai Asish YandAlex Goodman