Provided by: libmail-spf-perl_3.20240923-1_all 
NAME
Mail::SPF::Result - SPF result class
VERSION
version 3.20240923
SYNOPSIS
For the general usage of Mail::SPF::Result objects in code that calls Mail::SPF, see Mail::SPF. For the
detailed interface of Mail::SPF::Result and its derivatives, see below.
Throwing results
package Mail::SPF::Foo;
use Error ':try';
use Mail::SPF::Result;
sub foo {
if (...) {
$server->throw_result('pass', $request)
}
else {
$server->throw_result('permerror', $request, 'Invalid foo');
}
}
Catching results
package Mail::SPF::Bar;
use Error ':try';
use Mail::SPF::Foo;
try {
Mail::SPF::Foo->foo();
}
catch Mail::SPF::Result with {
my ($result) = @_;
...
};
Using results
my $result_name = $result->name;
my $result_code = $result->code;
my $request = $result->request;
my $local_exp = $result->local_explanation;
my $authority_exp = $result->authority_explanation
if $result->can('authority_explanation');
my $spf_header = $result->received_spf_header;
DESCRIPTION
An object of class Mail::SPF::Result represents the result of an SPF request.
There is usually no need to construct an SPF result object directly using the "new" constructor.
Instead, use the "throw" class method to signal to the calling code that a definite SPF result has been
determined. In other words, use Mail::SPF::Result and its derivatives just like exceptions. See Error
or "eval" in perlfunc for how to handle exceptions in Perl.
Constructor
The following constructor is provided:
new($server, $request): returns Mail::SPF::Result
new($server, $request, $text): returns Mail::SPF::Result
Creates a new SPF result object and associates the given Mail::SPF::Server and Mail::SPF::Request
objects with it. An optional result text may be specified.
Class methods
The following class methods are provided:
throw($server, $request): throws Mail::SPF::Result
throw($server, $request, $text): throws Mail::SPF::Result
Throws a new SPF result object, associating the given Mail::SPF::Server and Mail::SPF::Request
objects with it. An optional result text may be specified.
Note: Do not write code invoking "throw" on literal result class names as this would ignore any
derivative result classes provided by Mail::SPF extension modules. Invoke the "throw_result" method
on a Mail::SPF::Server object instead.
name: returns string
Abstract. Returns the result name of the result class (or object). For classes of the
Mail::SPF::Result::* hierarchy, this roughly corresponds to the trailing part of the class name. For
example, returns "neutral-by-default" if invoked on Mail::SPF::Result::NeutralByDefault. Also see
the "code" method. This method may also be used as an instance method.
This method must be implemented by sub-classes of Mail::SPF::Result for which the result name differs
from the result code.
class: returns class
class($name): returns class
Maps the given result name to the corresponding Mail::SPF::Result::* class, or returns the result
base class (the class on which it is invoked) if no result name is given. If an unknown result name
is specified, returns undef.
isa_by_name($name): returns boolean
If the class (or object) on which this method is invoked represents the given result name (or a
derivative name), returns true. Returns false otherwise. This method may also be used as an
instance method.
For example, "Mail::SPF::Result::NeutralByDefault->isa_by_name('neutral')" returns true.
code: returns string
Abstract. Returns the basic SPF result code ("pass", "fail", "softfail", "neutral", "none", "error",
"permerror", "temperror") of the result class on which it is invoked. All valid result codes are
valid result names as well, the reverse however does not apply. This method may also be used as an
instance method.
This method is abstract and must be implemented by sub-classes of Mail::SPF::Result.
is_code($code): returns boolean
If the class (or object) on which this method is invoked represents the given result code, returns
true. Returns false otherwise. This method may also be used as an instance method.
Note: The "isa_by_name" method provides a superset of this method's functionality.
received_spf_header_name: returns string
Returns 'Received-SPF' as the field name for "Received-SPF" header fields. This method should be
overridden by Mail::SPF extension modules that provide non-standard features (such as local policy)
with the capacity to dilute the purity of SPF results, in order not to deceive users of the header
field into mistaking it as an indication of a natural SPF result.
Instance methods
The following instance methods are provided:
throw: throws Mail::SPF::Result
throw($server, $request): throws Mail::SPF::Result
throw($server, $request, $text): throws Mail::SPF::Result
Re-throws an existing SPF result object. If Mail::SPF::Server and Mail::SPF::Request objects are
specified, associates them with the result object, replacing the prior server and request objects.
If a result text is specified as well, overrides the prior result text.
server: returns Mail::SPF::Server
Returns the Mail::SPF server object that produced the result at hand.
request: returns Mail::SPF::Request
Returns the SPF request that led to the result at hand.
text: returns string
Returns the text message of the result object.
stringify: returns string
Returns the result's name and text message formatted as a string. You can simply use a
Mail::SPF::Result object as a string for the same effect, see "OVERLOADING".
local_explanation: returns string; throws Mail::SPF::EDNSError, Mail::SPF::EInvalidMacroString
Returns a locally generated explanation for the result.
The local explanation is prefixed with the authority domain whose sender policy is responsible for
the result. If the responsible sender policy referred to another domain's policy (using the
"include" mechanism or the "redirect" modifier), that other domain which is directly responsible for
the result is also included in the local explanation's head. For example:
example.com: <local-explanation>
The authority domain "example.com"'s sender policy is directly responsible for the result.
example.com ... other.example.org: <local-explanation>
The authority domain "example.com" (directly or indirectly) referred to the domain
"other.example.org", whose sender policy then led to the result.
received_spf_header: returns string
Returns a string containing an appropriate "Received-SPF" header field for the result object. The
header field is not line-wrapped and contains no trailing newline character.
OVERLOADING
If a Mail::SPF::Result object is used as a string, the "stringify" method is used to convert the object
into a string.
RESULT CLASSES
The following result classes are provided:
• Mail::SPF::Result::Pass
• Mail::SPF::Result::Fail
• Mail::SPF::Result::SoftFail
• Mail::SPF::Result::Neutral
• Mail::SPF::Result::NeutralByDefault
This is a special case of the "neutral" result that is thrown as a default when "falling off" the
end of the record during evaluation. See RFC 4408, 4.7.
• Mail::SPF::Result::None
• Mail::SPF::Result::Error
• Mail::SPF::Result::PermError
• Mail::SPF::Result::TempError
The following result classes have additional functionality:
Mail::SPF::Result::Fail
The following additional instance method is provided:
authority_explanation: returns string; throws Mail::SPF::EDNSError, Mail::SPF::EInvalidMacroString
Returns the authority domain's explanation for the result. Be aware that the authority domain
may be a malicious party and thus the authority explanation should not be trusted blindly. See
RFC 4408, 10.5, for a detailed discussion of this issue.
SEE ALSO
Mail::SPF, Mail::SPF::Server, Error, "eval" in perlfunc
<http://tools.ietf.org/html/rfc4408>
For availability, support, and license information, see the README file included with Mail::SPF.
AUTHORS
Julian Mehnle <julian@mehnle.net>
perl v5.40.0 2024-09-23 Mail::SPF::Result(3pm)