/usr/share/common-lisp/source/cl+ssl/ is in cl-plus-ssl 20151218-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/common-lisp/source/cl+ssl/cl+ssl.asd
/usr/share/common-lisp/source/cl+ssl/src/
/usr/share/common-lisp/source/cl+ssl/src/bio.lisp
/usr/share/common-lisp/source/cl+ssl/src/conditions.lisp
/usr/share/common-lisp/source/cl+ssl/src/context.lisp
/usr/share/common-lisp/source/cl+ssl/src/ffi-buffer-all.lisp
/usr/share/common-lisp/source/cl+ssl/src/ffi-buffer-clisp.lisp
/usr/share/common-lisp/source/cl+ssl/src/ffi-buffer.lisp
/usr/share/common-lisp/source/cl+ssl/src/ffi.lisp
/usr/share/common-lisp/source/cl+ssl/src/package.lisp
/usr/share/common-lisp/source/cl+ssl/src/random.lisp
/usr/share/common-lisp/source/cl+ssl/src/reload.lisp
/usr/share/common-lisp/source/cl+ssl/src/streams.lisp