We now pass a pointer to the context where necessary. There are a
few cases where we need to request the context from sudoers via
sudoers_get_context() for the plugin API functions. If the plugin
API was able to pass around a closure pointer this would not be
necessary.
We just need a way for the policy (and visudo) to override the
default sudoers path. This adds a getter to be used in file.c when
sudoers is first opened.
The hook can be used to log parser errors (sudoers module) or keep
track of which files have an error (visudo).
Previously, we only kept track of a single parse error.
This setting is an argument to the sudoers plugin, similar to how
sudoers_file, sudoers_mode, sudoers_uid, etc. are implemented.
The default value is true.
Previously we needed to include headers required by the various
sudo*h files. Now those files are more self-sufficient and we
should only include headers needed by code in the various .c files.
o The parse tree is now passed to the alias, match and defaults functions.
o The nss API has been changed so that the nss parse() function returns
a pointer to a struct sudoers_parse_tree which will be filled in
by the getdefs() and query() functions.
in a per-nss list of userspecs and defaults instead of using separate
lookup and list functions. This makes it possible to have a single
implementation of the code for sudoers lookup and listing.
