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=head1 NAME |
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|
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Message::Field::MsgID --- Perl module for Message-ID |
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of Internet messages |
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|
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=head1 DESCRIPTION |
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|
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This module supports C<msg-id> defined by RFC 2822. |
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Message-ID generating algorithm suggested by |
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draft-ietf-usefor-msg-id-alt-00 is also supported. |
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|
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=cut |
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|
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package Message::Field::MsgID; |
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use strict; |
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use vars qw(@ISA %REG $VERSION); |
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$VERSION=do{my @r=(q$Revision: 1.6 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r}; |
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require Message::Util; |
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require Message::Field::Structured; |
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push @ISA, qw(Message::Field::Structured); |
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|
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use overload '""' => sub { $_[0]->stringify }, |
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fallback => 1; |
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|
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*REG = \%Message::Util::REG; |
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## Inherited: comment, quoted_string, domain_literal |
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## WSP, FWS, phrase, NON_atom |
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## msg_id |
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## M_quoted_string |
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|
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=head1 CONSTRUCTORS |
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|
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The following methods construct new objects: |
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|
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=over 4 |
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|
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=cut |
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|
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## Initialize of this class -- called by constructors |
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sub _init ($;%) { |
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my $self = shift; |
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my %options = @_; |
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my %DEFAULT = ( |
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-encoding_after_encode => 'unknown-8bit', |
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-encoding_before_decode => 'unknown-8bit', |
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#field_param_name |
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#field_name |
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#format |
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-hash_name => '%none', |
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#hook_encode_string |
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#hook_decode_string |
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-software_name => 'MFMpm', |
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-software_name_hash => '%none', |
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-validate => 0, |
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); |
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$self->SUPER::_init (%DEFAULT, %options); |
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} |
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|
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=item $m = Message::Field::MsgID->new ([%options]) |
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|
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Constructs a new object. You might pass some options as parameters |
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to the constructor. |
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|
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=cut |
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|
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sub new ($;%) { |
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my $self = shift->SUPER::new (@_); |
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my %option = @_; |
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if ($option{id_left} && $option{id_right}) { |
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$self->{id_left} = $option{id_left}; |
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$self->{id_right} = $option{id_right}; |
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} elsif ($option{addr_spec} |
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|| (($option{fqdn} || $option{ip_address} || $option{uucp}) |
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&& ($option{login}))) { |
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$self->_newid (\%option); |
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} |
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$self; |
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} |
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|
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sub parse ($;$%) { |
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my $class = shift; |
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my $self = bless {}, $class; |
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my $body = shift; my @c; |
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$self->_init (@_); |
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($body, @c) = $self->Message::Util::delete_comment_to_array ($body); |
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|
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$body = Message::Util::remove_wsp ($body); |
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if ($body =~ /$REG{M_addr_spec}/) { |
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my %s = &{$self->{option}->{hook_decode_string}} ($self, |
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Message::Util::unquote_quoted_string ($1), type => 'quoted-string'); |
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$self->{id_left} = $s{value}; |
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#my %s = &{$self->{option}->{hook_decode_string}} ($self, |
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# Message::Util::unquote_if_domain_literal ($2), type => 'domain'); |
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#$self->{id_right} = $s{value}; |
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$self->{id_right} = $2; |
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} |
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|
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$self; |
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} |
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|
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sub _newid ($\%) { |
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my $self = shift; |
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my $o = shift; |
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$$o{addr_spec} = Message::Util::remove_wsp ($$o{addr_spec}); |
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if ($$o{addr_spec} =~ /$REG{M_addr_spec}/) { |
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$$o{login} = $1; $$o{fqdn} = $2; |
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} |
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if ($self->{option}->{validate} && $$o{fqdn} =~ |
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/[.@](example\.(?:com|org|net)|localdomain|localhost|example|invalid|arpa)$/) { |
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Carp::croak "Msg-ID generation: invalid TLD of FQDN: .$1"; |
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} |
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if (!$$o{fqdn} && $$o{ip_address}) { |
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if ($self->{option}->{validate} |
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&& $$o{ip_address}=~/([0-9]+)\.([0-9]+)\.([0-9]+)\.([0-9]+)/){ |
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my ($c1, $c2, $c3, $c4) = ($1, $2, $3, $4); |
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Carp::croak "Msg-ID generation: invalid IPv4 address: $c1.$c2.$c3.$c4" |
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## See [IANAREG] and draft-iana-special-ipv4 |
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if ($c1 == 0) ## "this" network |
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|| ($c1 == 10) ## private [RFC1918] |
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|| ($c1 == 127) ## loopback |
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|| ($c1 == 169 && $c2 == 254) ## "link local" |
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|| ($c1 == 172 && 16 <= $c2 && $c2 < 32) ## private [RFC1918] |
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|| ($c1 == 192 && (($c2 == 0 && $c3 == 2) ## "TEST-NET" |
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|| ($c2 == 88 && $c3 == 99) ## 6to4 anycast [RFC3068] |
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|| ($c2 == 168))) ## private [RFC1918] |
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|| ($c1 == 198 && ($c2 == 18 || $c2 == 19)) ## benchmark [RFC2544] |
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|| ($c1 >= 224); ## class D,E [RFC3171] |
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} |
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$$o{fqdn} ||= '['.$$o{ip_address}.']'; |
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} |
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if (!$$o{fqdn} && $$o{uucp}) { |
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$$o{uucp} .= '.uucp' if $self->{option}->{validate} && $$o{uucp} !~ /\.uucp/i; |
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$$o{fqdn} = $$o{uucp}; |
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} |
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Carp::croak "Msg-ID generation: no FQDN" |
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if $self->{option}->{validate} && !$$o{fqdn}; |
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|
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$self->{id_right} = $$o{fqdn}; |
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|
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Carp::croak "Msg-ID generation: no 'login'" |
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if $self->{option}->{validate} && !$$o{login}; |
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$$o{login} = $self->_hash ($$o{login}, $self->{option}->{hash_name}); |
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|
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my @s = ('0'..'9','a'..'z','-','=','_'); |
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my @t = ('0'..'9','a'..'z'); |
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my $unique = $t[rand @t].$s[rand @s].$s[rand @s].$s[rand @s].'.'; |
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$unique .= join ('.', $self->_base39 (time), $self->_base39 ($$), |
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$self->_hash ($self->{option}->{software_name}, |
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$self->{option}->{software_name_hash})); |
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$self->{id_left} = $unique |
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.'%'.($self->{option}->{hash_name} ne '%none'? |
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$self->_hash ($self->{option}->{hash_name}, '%none') .'%': '') |
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.$$o{login} |
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.($$o{subject_changed}? '-_-': ''); |
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|
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$self; |
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} |
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|
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sub _hash ($$;$$) { |
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my $self = shift; |
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my ($str, $hash_name, $add_unsafe) = (shift, lc shift, shift); |
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$add_unsafe ||= qr#[/.=\x09\x20]#; |
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undef $hash_name if $hash_name eq '%none'; |
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if ($hash_name eq 'md5') { |
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eval {require Digest::MD5} or Carp::croak "Msg-ID generation: $@"; |
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$str = Digest::MD5::md5_base64 ($str); |
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} elsif ($hash_name eq 'sha1') { |
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eval {require Digest::SHA1} or Carp::croak "Msg-ID generation: $@"; |
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$str = Digest::SHA1::sha1_base64 ($str); |
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} elsif ($hash_name eq 'md2') { |
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eval {require Digest::MD2} or Carp::croak "Msg-ID generation: $@"; |
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$str = Digest::MD2::md2_base64 ($str); |
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} elsif ($hash_name eq 'crypt') { |
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my @s = ('0'..'9','A'..'Z','a'..'z'); |
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my $salt = crypt('foobar', '$1$ab$') eq '$1$ab$uAP8qWqcFs3q.Gfl5PkL2.'? |
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'$1$'.join('', map($s[rand @s], 1..8)).'$': $s[rand @s].$s[rand @s]; |
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$str = crypt ($str, $salt); |
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} |
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$str =~ s#($add_unsafe)#sprintf('=%02X', ord($1))#ge; |
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$str =~ s/($REG{NON_atext_dot})/sprintf('=%02X', ord($1))/ge; |
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$str; |
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} |
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|
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sub _base39 ($$) { |
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my $self = shift; |
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my $number = shift; |
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my @digit = ('0'..'9','a'..'z','-','=','_'); |
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my $ret = ''; |
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|
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my ($rem); |
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while ($number > 0) { |
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$rem = $number % @digit; |
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$ret = $digit[ $rem ].$ret; |
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$number = ($number - $rem) / @digit; |
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} |
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$ret; |
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} |
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|
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sub generate ($%) { |
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my $self = shift; |
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my %parameter = @_; |
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for (grep {/^-/} keys %parameter) {$parameter{substr ($_, 1)} = $parameter{$_}} |
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$self->_newid (\%parameter); |
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} |
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|
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sub id_left ($) { |
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my $self = shift; |
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my %e = &{$self->{option}->{hook_encode_string}} ($self, |
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$self->{id_left}, type => 'local-part'); |
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Message::Util::quote_unsafe_string ($e{value}, |
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unsafe_regex => qr/$REG{NON_atext_dot}|^\.|\.$/); |
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} |
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sub id_right ($) { |
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my $self = shift; |
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#my %e = &{$self->{option}->{hook_encode_string}} ($self, |
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# $self->{id_right}, type => 'domain'); |
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#Message::Util::quote_unsafe_domain ($e{value}); |
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Message::Util::quote_unsafe_domain ($self->{id_right}); |
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} |
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sub content ($) { |
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my $self = shift; |
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my ($l, $r) = ($self->id_left, $self->id_right); |
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sprintf '%s@%s', $l, $r if $l && $r; |
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} |
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*id = \&content; |
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|
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sub stringify ($;%) { |
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my $self = shift; |
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my ($l, $r) = ($self->id_left, $self->id_right); |
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sprintf '<%s@%s>', $l, $r if $l && $r; |
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} |
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*as_string = \&stringify; |
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|
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=head1 EXAMPLE |
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|
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use Message::Field::MsgID; |
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my $from = 'foo@bar.example'; |
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my $login = 'my-login-name'; |
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my $domain = 'foo.bar.example'; |
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my $ipv4 = '192.168.0.1'; |
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my %mid; |
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$mid{no_crypt} = new Message::Field::MsgID |
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addr_spec => $from, -validate => 0; |
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$mid{md5} = new Message::Field::MsgID |
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login => $login, ip_address => $ipv4, |
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-hash_name => 'md5', -validate => 0; |
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$mid{sha1} = new Message::Field::MsgID |
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login => $login, fqdn => $domain, subject_changed => 1, |
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-hash_name => 'sha1', -validate => 0; |
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for (keys %mid) { |
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print $_, ":\t", $mid{$_}, "\n"; |
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} |
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# sha1: <t-9.bbxkfu.xsem.MFMMpm%sha1%9pnH2R6iN8KSIMby+dPU0i3M8RU-_-@foo.bar.example> |
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# md5: <7fu.bbxkfu.xsem.MFMMpm%md5%eBpd+12mupwxZBc6kMWR9g@[192.168.0.1]> |
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# no_crypt: <3vy.bbxkfu.xsem.MFMMpm%foo@bar.example> |
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|
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## IMPORTANT NOTE: This example uses -validate option with |
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## '0' (does not validate) value since it uses example (invalid) |
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## resource names, such as 'foo.bar.example'. Usually, this option |
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## shall not be used (and default value = '1' = does validate |
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## should be used). |
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|
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=head1 SEE ALSO |
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|
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RFC 822 E<lt>urn:ietf:rfc:822E<gt>, RFC 2822 E<lt>urn:ietf:rfc:2822E<gt> |
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|
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RFC 850 E<lt>urn:ietf:rfc:850E<gt>, RFC 1036 E<lt>urn:ietf:rfc:1036E<gt>, |
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son-of-RFC1036, draft-ietf-usefor-article-06.txt |
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E<lt>urn:ietf:id:draft-ietf-usefor-article-06E<gt> |
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|
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draft-ietf-usefor-message-id-01.txt |
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E<lt>urn:ietf:id:draft-ietf-usefor-message-id-01E<gt> |
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|
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draft-ietf-usefor-msg-id-alt-00.txt |
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E<lt>urn:ietf:id:draft-ietf-usefor-msg-id-alt-00E<gt> |
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|
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=head1 LICENSE |
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|
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Copyright 2002 wakaba E<lt>w@suika.fam.cxE<gt>. |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; see the file COPYING. If not, write to |
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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Boston, MA 02111-1307, USA. |
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|
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=head1 CHANGE |
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|
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See F<ChangeLog>. |
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$Date: 2002/06/09 11:08:28 $ |
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|
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=cut |
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|
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