Adds the ability for persistent modules to read a configuration file
that can be used to control their behavior.
In some cases, we may want a persistent module to be configurable. A new
configuration variable PERSISTCONFIGDIR has been added which indicates a
directory the agent will look in for persistent module configs. When the
agent starts a persistent module, it will determine if modulename.cfg
exists in the config directory; if so the agent will load the config and
send it to the newly executed module, which it will read on stdin. The
module can then read this configuration, and configure itself as needed
before it begins it's primary execution functions.
Modules specify the configuration format within the module code itself,
so each module that makes use of this can have it's own configuration
parameters.
EPM (extra privacy mode) is an agent option that if enabled, will
inform modules they should apply additional masking on returned results.
For example, by default if the file module matches a search, the name of
the matching file will be returned. With this enabled, it may inform the
investigator that something on the system matched, but will not provide
meta-data.
If any proxies have been configured, try those first before attempting
direct connections. This also adds specifying proxies in the agent
config file, where as before they were only compile time options in the
built-in configuration.
Resolves#249
It's possible over the course of the process lifetime on a workstation
that address or other environment information can change. This adds
support for periodic refreshes of current environment information from
the system.
This commit also requires modifying the way we pass the Context around
the agent, from a copy to using a pointer so the changes made in the
refresh routine are visible.
Closes#205
If an error ocurred during configLoad function, it might not use the
builtin conf, but a half-overwritten one. This change defers the
Config overwrite until all the error-sensitive functions are called.
Aaron Meihm
Andres Hermosilla
jboyer2012
Rob Murtha
Marco Vanotti
Julien Vehent