Ubuntu Manpage: Mail::SPF::Request

Provided by: libmail-spf-perl_3.20240206-1_all

NAME

       Mail::SPF::Request - SPF request class

SYNOPSIS

           use Mail::SPF;

           my $request = Mail::SPF::Request->new(
               versions    => [1, 2],              # optional
               scope       => 'mfrom',             # or 'helo', 'pra'
               identity    => 'fred@example.com',
               ip_address  => '192.168.0.1',
               helo_identity                       # optional,
                           => 'mta.example.com'    #   for %{h} macro expansion
           );

           my @versions    = $request->versions;
           my $scope       = $request->scope;
           my $authority_domain
                           = $request->authority_domain;
           my $identity    = $request->identity;   # 'localpart@domain' or 'domain'
           my $domain      = $request->domain;
           my $localpart   = $request->localpart;
           my $ip_address  = $request->ip_address;     # IPv4 or IPv6 address
           my $ip_address_v6                           # native IPv6 address or
                           = $request->ip_address_v6;  #   IPv4-mapped IPv6 address
           my $helo_identity                           # additional HELO identity
                           = $request->helo_identity;  #   for non-HELO scopes

           my $record      = $request->record;
               # the record selected during processing of the request, may be undef

           $request->state(field => 'value');
           my $value = $request->state('field');

DESCRIPTION

An object of class Mail::SPF::Request represents an SPF request.

Constructors
The following constructors are provided:

new(%options): returns Mail::SPF::Request
Creates a new SPF request object. The request is considered the root-request for any subsequent sub-
requests (see the "new_sub_request" constructor).

%options is a list of key/value pairs representing any of the following options:

versions
A reference to an array of integers listing the versions of SPF records that may be used for the
SPF check. Only those record versions that cover the desired scope will actually be used. At
least one applicable version must be specified. For a single record version, a simple scalar may
be specified instead of an array-ref. Defaults to all versions that cover the desired scope (see
below); defaults to [1, 2] for the default scope of 'mfrom'.

The following versions are supported:

1 Use "v=spf1" records.

2 Use "spf2.0" records.

Example: A value of 1 (or [1]) means that only "v=spf1" records should be used for the SPF
check. If at the same time a scope of 'pra' is specified, a Mail::SPF::EInvalidScope exception
will be thrown as "v=spf1" records do not cover the PRA scope.

scope
A string denoting the authorization scope of the identity that should be checked. Defaults to
'mfrom'. The following scope values are supported:

'helo'
The given identity is the "HELO" parameter of an SMTP transaction (RFC 2821) and should be
checked against SPF records that cover the "helo" scope ("v=spf1"). See the SPFv1
specification (RFC 4408) for the formal definition of the "HELO" scope.

'mfrom'
The given identity is the "MAIL FROM" parameter of an SMTP transaction (RFC 2821), and should
be checked against SPF records that cover the "mfrom" scope ("v=spf1" and "spf2.0/mfrom").
See the SPFv1 specification (RFC 4408) for the formal definition of the "MAIL FROM" scope.

Note: In the case of an empty "MAIL FROM" SMTP transaction parameter ("MAIL FROM:<>"), you
should perform a check with the "helo" scope instead.

'pra'
The given identity is the "Purported Responsible Address" of an internet message (RFC 2822)
and should be checked against SPF records that cover the "pra" scope ("spf2.0/pra"). See the
PRA specification (RFC 4407) for the formal definition of the PRA scope.

authority_domain
A string denoting the domain name that should be queried for sender policy records. Defaults to
the domain of the "identity" option. There is usually no need to specify the "authority_domain"
option.

identity
Required. A string denoting the sender identity whose authorization should be checked. This is
a domain name for the "helo" scope, and an e-mail address for the "mfrom" and "pra" scopes.

Note: An empty identity must not be passed. In the case of an empty "MAIL FROM" SMTP
transaction parameter, you should perform a check with the "helo" scope instead.

ip_address
Required for checks with the "helo", "mfrom", and "pra" scopes. Either a string or a NetAddr::IP
object denoting the IP address of the host claiming the identity that is being checked. Can be
either an IPv4 or an IPv6 address. An IPv4-mapped IPv6 address (e.g. '::ffff:192.168.0.1') is
treated as an IPv4 address.

helo_identity
A string denoting the "HELO" SMTP transaction parameter in the case that the main identity is of
a scope other than "helo". This identity is then used merely for the expansion of "%{h}" macros
during the policy evaluation of the main identity. Defaults to undef, which will be expanded to
'unknown'. If the main identity is of the "helo" scope, this option is unused.

new_sub_request(%options): returns Mail::SPF::Request
Must be invoked on an existing request object. Creates a new sub-request object by cloning the
invoked request, which is then considered the new request's super-request. Any specified options
(see the "new" constructor) override the parameters of the super-request. There is usually no need
to specify any options besides the "authority_domain" option.

Instance methods
The following instance methods are provided:

root_request: returns Mail::SPF::Request
Returns the root of the request's chain of super-requests. Specifically, returns the request itself
if it has no super-requests.

super_request: returns Mail::SPF::Request
Returns the super-request of the request, or undef if there is none.

versions: returns list of string
Returns a list of the SPF record versions that are used for request. See the description of the
"new" constructor's "versions" option.

scope: returns string
Returns the scope of the request. See the description of the "new" constructor's "scope" option.

authority_domain: returns string
Returns the authority domain of the request. See the description of the "new" constructor's
"authority_domain" option.

identity: returns string
Returns the identity of the request. See the description of the "new" constructor's "identity"
option.

domain: returns string
Returns the identity domain of the request. See the description of the "new" constructor's
"identity" option.

localpart: returns string
Returns the identity localpart of the request. See the description of the "new" constructor's
"identity" option.

ip_address: returns NetAddr::IP
Returns the IP address of the request as a NetAddr::IP object. See the description of the "new"
constructor's "ip_address" option.

ip_address_v6: returns NetAddr::IP
Like the "ip_address" method, however, an IPv4 address is returned as an IPv4-mapped IPv6 address
(e.g. '::ffff:192.168.0.1') to facilitate uniform processing.

helo_identity: returns string
Returns the "HELO" SMTP transaction parameter of the request. See the description of the "new"
constructor's "helo_identity" option.

record: returns Mail::SPF::Record
Returns the SPF record selected during the processing of the request, or undef if there is none.

state($field): returns anything
state($field, $value): returns anything
Provides an interface for storing temporary state information with the request object. This is
primarily meant to be used internally by Mail::SPF::Server and other Mail::SPF classes.

If $value is specified, stores it in a state field named $field. Returns the current (new) value of
the state field named $field. This method may be used as an lvalue.

AUTHORS

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

NAME

SYNOPSIS

DESCRIPTION

SEE ALSO

AUTHORS