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squid -- confusing results on empty acl declarations


Applying an empty ACL list results in unexpected behavior: anything will match an empty ACL list. For example,

The meaning of the configuration gets very confusing when we encounter empty ACLs such as

acl something src "/path/to/empty_file.txt"
http_access allow something somewhere

gets parsed (with warnings) as

http_access allow somwhere

And similarily if you are using proxy_auth acls without having any auth schemes defined.



portaudit: squid -- confusing results on empty acl declarations

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Oliver Eikemeier <>