#~Local domain matching; returns /user@FQDN|user/ if address
#~   is local to Majordomo host ($whereami). Uses RegExp only if local.

#=============================================================================
# ADDRESS LOOKUP CUSTOMIZATIONS
#=============================================================================
# %siteaddr is an array which defines the prompts (with suitable local
# examples) associated with the opening form input.
#
# siteaddr() is an address-mapping function used to tie an address [or
# possibly name] to a set of address regexp's. These regexp's will be
# used to determine list membership.
#
# by_siteaddr() is a address-comparison function used for the sorting of
# subscriber addresses.
#-----------------------------------------------------------------------------

%siteaddr = (
	'prompt',"Your E-Mail Address",
	'browse',"<B>Enter your e-mail address:</B>
		(e.g.: \"jdoe\@host.dom.ain\")",
);

#-----------------------------------------------------------------------------
# siteaddr()
#
# Function should return a 3-tuple list:
#   user:     given "real name" of user
#   address:  preferred address of user
#   pattern:  regexp of address patterns to match
#
# The "pattern" regexp enables MajorCool to identify list members even if
# they may be subscribed with multiple addresses.
#
sub siteaddr {
	local($target) = @_;
	# weed out bogus attempts
	&send_error("<$target> is not a valid e-mail address.")
		unless &valid_addr($target);
	#
	# valid_addr() only checks for filenames, pipes, -args, and
	# other potential mail security problems. It does nothing to
	# prevent syntactially incorrect addresses from being used. If
	# you want to do a little more checking, consider using this
	# regexp contributed by <karsten@zora.nadir.org> to check
	# for user@host.dom.ain address formats. Or invent your own.
	#
	# $target =~
	#   /([\w-\.]+)@(([\w-\.]+\.)?[a-z]([\w-]{0,62}[\w])\.([a-z]){2,3})$/i;
	# &send_error("$target is not a valid e-mail address.")
	# 	unless $1 && $2;
	# 	
        local($lhs,@rhs) = split(/[!%@]/, $target);
        &send_error("<$target> is not a valid e-mail address.")
                unless $lhs ne "" && $#rhs >= 0;
	return ($target, $target, "") if @rhs[0] !~ /^$whereami$/i;
	# no regexp spoofs of user-id
	&send_error("Bad user-id format.")
		unless $lhs =~ /^([\-\w\d\._]+)$/;
	local($regex) = "^$target\$";
	$regex .= "|^$lhs\$";
	$regex =~ s/\./\\./g;	# periods are real, not meta
	return ($target, $target, $regex);
}

#-----------------------------------------------------------------------------
# by_siteaddr()
#
# Function should return {-1,0,+1} depending on the comparison of the
# two array elements.
#
sub by_siteaddr {
	$a cmp $b;
}

1;	# keep require happy