NAME

Mail::SPF::MacroString - SPF record macro string class

SYNOPSIS

Providing the expansion context early

    use Mail::SPF::MacroString;

    my $macrostring = Mail::SPF::MacroString->new(
        text    => '%{ir}.%{v}._spf.%{d2}',
        server  => $server,
        request => $request
    );

    my $expanded = $macrostring->expand;

Providing the expansion context late

    use Mail::SPF::MacroString;

    my $macrostring = Mail::SPF::MacroString->new(
        text    => '%{ir}.%{v}._spf.%{d2}'
    );

    my $expanded1 = $macrostring->expand($server, $request1);

    $macrostring->context($server, $request2);
    my $expanded2 = $macrostring->expand;

DESCRIPTION

An object of class Mail::SPF::MacroString represents a macro string that can be expanded to a plain string in the context of an SPF request.

Constructor

The following constructor is provided:

new(%options): returns Mail::SPF::MacroString: Creates a new SPF record macro string object.
%options is a list of key/value pairs representing any of the following options:

text: Required. The unexpanded text of the new macro string.
server: The Mail::SPF::Server object that is to be used when expanding the macro string. A server object need not be attached statically to the macro string; it can be specified dynamically when calling the "expand" method.
request: The Mail::SPF::Request object that is to be used when expanding the macro string. A request object need not be attached statically to the macro string; it can be specified dynamically when calling the "expand" method.
is_explanation: A boolean denoting whether the macro string is an explanation string obtained via an "exp" modifier. If true, the "c", "r", and "t" macros may appear in the macro string, otherwise they may not, and if they do, a Mail::SPF::EInvalidMacro exception will be thrown when the macro string is expanded. Defaults to false.

Instance methods

The following instance methods are provided:

text: returns string: Returns the unexpanded text of the macro string.
context($server, $request): throws Mail::SPF::EOptionRequired: Attaches the given Mail::SPF::Server and Mail::SPF::Request objects as the context for the macro string.
expand: returns string; throws Mail::SPF::EMacroExpansionCtxRequired, Mail::SPF::EInvalidMacroString, Mail::SPF::Result::PermError
expand($server, $request): returns string; throws Mail::SPF::EMacroExpansionCtxRequired, Mail::SPF::EInvalidMacroString, Mail::SPF::Result::PermError: Expands the text of the macro string using either the context specified through an earlier call to the "context()" method, or the given context, and returns the resulting string. See RFC 4408, 8, for how macros are expanded.
is_explanation: returns boolean: Returns true if the macro string is an explanation string obtained via an "exp" modifier. See the description of the "new" constructor's "is_explanation" option.
stringify: returns string: Returns the expanded text of the macro string if a context is attached to the object. Returns the unexpanded text otherwise. You can simply use a Mail::SPF::MacroString object as a string for the same effect, see "OVERLOADING".

OVERLOADING

If a Mail::SPF::MacroString object is used as a string, the "stringify" method is used to convert the object into a string.

AUTHORS

Julian Mehnle <julian@mehnle.net>, Shevek <cpan@anarres.org>