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.\" ========================================================================
.\"
.IX Title "Mail::SRS::Daemon 3"
.TH Mail::SRS::Daemon 3 "2004-06-24" "perl v5.16.3" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
Mail::SRS::Daemon \- modular daemon for Mail::SRS
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
my \f(CW$daemon\fR = new Mail::SRS::Daemon(
	SecretFile  => \f(CW$secretfile\fR,
	Separator   => \f(CW$separator\fR,
		);
\&\f(CW$daemon\fR\->\fIrun()\fR;
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The \s-1SRS\s0 daemon listens on a socket for \s-1SRS\s0 address transformation
requests. It transforms the addresses and returns the new addresses
on the socket.
.PP
It may be invoked from exim using ${readsocket ...}, and probably
from other MTAs as well. See http://www.anarres.org/projects/srs/
for examples.
.SH "METHODS"
.IX Header "METHODS"
.ie n .SS "$daemon = new Mail::SRS::Daemon(...)"
.el .SS "\f(CW$daemon\fP = new Mail::SRS::Daemon(...)"
.IX Subsection "$daemon = new Mail::SRS::Daemon(...)"
Construct a new Mail::SRS object and return it.  All parameters which
are valid for Mail::SRS are also valid for Mail::SRS::Daemon and will
be passed to the constructor of Mail::SRS verbatim. The exception to
this rule is the Secret parameter, which will be promoted to a list
and will have all secrets from SecretFile included. New parameters
are documented here. See Mail::SRS for the rest.
.ie n .IP "SecretFile => $string" 4
.el .IP "SecretFile => \f(CW$string\fR" 4
.IX Item "SecretFile => $string"
A file to read for secrets. Secrets are specified once per line. The
first specified secret is used for encoding. Secrets are written
one per line. Blank lines and lines starting with a # are ignored.
If Secret is not given, then the secret file must be nonempty.
.Sp
Secret will specify a primary secret and override SecretFile if both
are specified. However, secrets read from SecretFile still be used
for decoding if both are specified.
.ie n .IP "Socket => $socket" 4
.el .IP "Socket => \f(CW$socket\fR" 4
.IX Item "Socket => $socket"
An instance of IO::Socket, presumed to be a listening socket. This
may be provided in order to use a preexisting socket, rather than have
Mail::SRS::Daemon construct a new socket.
.ie n .SS "$daemon\->\fIrun()\fP"
.el .SS "\f(CW$daemon\fP\->\fIrun()\fP"
.IX Subsection "$daemon->run()"
Run the daemon. This method will never return. Errors and exceptions
are caught, and error messages are returned down the socket.
.SH "EXPORTS"
.IX Header "EXPORTS"
Given :all, this module exports the following variables.
.ie n .IP "$SRSSOCKET" 4
.el .IP "\f(CW$SRSSOCKET\fR" 4
.IX Item "$SRSSOCKET"
The filename of the default socket created by Mail::SRS::Daemon.
.SH "PROTOCOL"
.IX Header "PROTOCOL"
The daemon waits for a single line of text from the client, and will
respond with a single line. The lines are all of the form \*(L"\s-1COMMAND\s0
args...\*(R". Currently, two commands are supported: forward and reverse.
.PP
A forward request looks like:
.PP
.Vb 1
\&        FORWARD sender@source.com alias@forwarder.com
.Ve
.PP
A reverse request looks like:
.PP
.Vb 1
\&        REVERSE srs0+HHH=TT=domain=local\-part@forwarder.com
.Ve
.PP
In either case, the daemon will respond with either a translated
address, or a line starting \*(L"\s-1ERROR \*(R",\s0 followed by a message.
.SH "TODO"
.IX Header "TODO"
Add more daemon-related options, such as path to socket, or inet
socket address.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Mail::SRS, srsd, http://www.anarres.org/projects/srs/
.SH "AUTHOR"
.IX Header "AUTHOR"
.Vb 4
\&    Shevek
\&    CPAN ID: SHEVEK
\&    cpan@anarres.org
\&    http://www.anarres.org/projects/
.Ve
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright (c) 2004 Shevek. All rights reserved.
.PP
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.