existing core code. Add OK hook.
* lib/Qpsmtpd.pm
(init_logger): replaced with log_level()
(load_logging): NEW - load logging plugins without calling log()
(log_level): NEW - set/get global $LogLevel scalar
(log): now just a wrapper for varlog(); called only by core code
(varlog): initializes logging if not already done, calls logging plugins
in turn and falls back to interal logging unless plugins OK or DECLINED
(_load_plugins): only display "Loading plugin" when actually loading one
(run_hooks): load logging plugins without calling log(); add OK hook as
else of the DENY* case
(spool_dir): use global $Spool_dir scalar to cache location
* lib/Qpsmtpd/Plugin.pm
(%hooks): add "logging" and "ok"
(register_hook): add local _hook to object cache
(log): call varlog() with additional parameters hook and plugin_name
except for logging hook
(compile): add accessor sub for local _hook scalar
* lib/Qpsmtpd/SMTP.pm
(mail, rcpt): change loglevel to LOGALERT instead of LOGWARN for from/to
* qpsmtpd-forkserver
(REAPER): use package ::log() instead of warn()
(main): defer calling log until $plugin_loader has been initialized
(log): call logging using the $plugin_loader object
* plugins/logging/warn
NEW: sample plugin which replicates the core logging functionality
* plugins/logging/devnull
NEW: sample plugin which logs nothing (for testing multiple logging
plugin functionality)
* config.sample/logging
sample configuration file for logging plugins
* plugins/virus/uvscan
plugins/virus/clamav
Increase loglevel for non-serious warnings to LOGWARN from LOGERROR
git-svn-id: https://svn.perl.org/qpsmtpd/trunk@398 958fd67b-6ff1-0310-b445-bb7760255be9
