fix(caddyfile): guard snippet import cycles#8
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Add a cycle guard for Caddyfile snippet imports. Track snippet expansions with a hard cap (1000) and error on trivial self-imports in snippet bodies to prevent infinite recursion. Add tests for snippet self-import failure. Signed-off-by: Ville Vesilehto <ville@vesilehto.fi>
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yongtang
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Sep 19, 2025
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Add a cycle guard for Caddyfile snippet imports. Track snippet expansions with a hard cap (1000) and error on trivial self-imports in snippet bodies to prevent infinite recursion.
Add tests for snippet self-import, to validate the newly added failure state. Run the
TestSnippetImportCycletest againstmasterbranch and you will see it times out:Originally found in OSS-Fuzz issue #42486385 while fuzzing CoreDNS.
Once merged, could we publish a new release and bump the dependency in CoreDNS?