....................................../////.===Shadow-Here===./////................................................ > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < ------------------------------------------------------------------------------------------------------------------- /////////////////////////////////////////////////////////////////////////////////////////////////////////////////// RIFF¤ WEBPVP8 ˜ ðÑ *ôô>‘HŸK¥¤"§£±¨àð enü¹%½_F‘åè¿2ºQú³íªú`N¿­3ÿƒügµJžaÿ¯ÿ°~¼ÎùnúîÞÖô•òíôÁÉß®Sm¥Ü/ ‡ó˜f£Ùà<˜„xëJ¢Ù€SO3x<ªÔ©4¿+ç¶A`q@Ì“Úñè™ÍÿJÌ´ª-˜ÆtÊÛL]Ïq*‘Ý”ì#ŸÌÏãY]@ê`¿ /ªfkØB4·®£ó z—Üw¥Pxù–ÞLШKÇN¾AkÙTf½è'‰g gÆv›Øuh~ a˜Z— ïj*á¥t d£“uÒ ¨`K˜¹ßþ]b>˜]_ÏÔ6W—è2r4x•íÖ…"ƒÖNîä!¦å Ú}ýxGøÌ —@ ;ÆÚŠ=ɾ1ý8lªË¥ô ^yf®Œ¢u&2©nÙÇ›ñÂñŒ³ aPo['½»øFùà­+4ê“$!lövlüÞ=;N®3ð‚õ›DÉKòÞ>ÄÍ ¥ˆuߤ#ˆ$6ù™¥îŠ‡y’ÍB¼ çxÛ;X"WL£R÷͝*ó-¶Zu}º.s¸sšXqù–DþÿvªhüïwyŸ ¯é³lÀ:KCûÄ£Ëá\…­ ~—ýóî ¼ûûÜTÓüÇy…ŽÆvc»¾×U ñ¸žþоP÷¦ó:Ò¨¨5;Ð#&#ÖúñläÿÁœ GxÉ­/ñ‡áQðìYÉtÒwŽ¼GÔ´zàÒò ð*ëzƒ•4~H]Ø‹f ñÓÈñ`NåWçs'ÆÏW^ø¹!XžµmQ5ÃËoLœÎ: ÞËÍ¥J ù…î èo£ßPÎñ¶ž8.Œ]ʵ~5›ÙË-ù*8ÙÖß±~ ©¹rÓê‚j¶d¸{^Q'˜±Crß ÚH—#¥¥QlÀ×ëã‡DÜ«èî þ&Çæžî;ŽÏºò6ÒLÃXy&ZŒ'j‚¢Ù€IßÚù+–MGi‰*jE€‘JcÜ ÓÌ EÏÚj]o˜ Þr <¾U ûŪæÍ/šÝH¥˜b”¼ ÁñßX GP›ï2›4WŠÏà×£…íÓk†¦H·ÅíMh–*nó÷à]ÁjCº€b7<ب‹¨5車bp2:Á[UªM„QŒçiNMa#<5›áËó¸HýÊ"…×Éw¹¦ì2º–x<›»a±¸3Weü®FÝ⑱ö–î–³|LPÈ~çð~Çå‡|º kD¢µÏàÆAI %1À% ¹Ò – ”ϝS¦‰4&¶£°à Öý”û_Ò Áw°A«Å€?mÇÛgHÉ/8)á¾ÛìáöŽP í¨PŸNÙµº¦‡§Ùš"ÿ«>+ªÕ`Ê÷‡‚ß Õû˜þãÇ-PÍ.¾XV‘€ dÜ"þ4¹ ±Oú‘©t¥¦FªÄÃÄ•b‚znýu½—#cDs˜ÃiÑOˆñ×QO=*IAÊ,¶ŽZƒ;‡wøXè%EÐk:F±Ú” .Ѽ+Áu&Ç`."pÈÉw o&¿dE6‘’EqTuK@Ì¥ã™À(Êk(h‰,H}RÀIXÛš3µ1©_OqÚÒJAñ$ÊÙÜ;D3çŒ[þùœh¬Ã³™ö6ç†NY".Ú‰ï[ªŸŒ '²Ð öø_¨ÂÉ9u鶳ÒŠõTàîMØ#û¯gN‡bÙ놚X„ö …ÉeüÌ^J ‹€.œ$Æ)βÄeæW#óüßĺŸ€ ÀzwV 9oä»f4V*uB «Ë†¹ì¯žR霓æHXa=&“I4K;¯ç‹h×·"UŠ~<•â•ªVêª&ÍSÃÆÅ?ÔqÎ*mTM ˜›µwêd#[C¡©§‘D<©àb†–ÁœøvH/,í:¯( ²£|4-„Æövv„Yͼ™^Á$ˆ„¢Û[6yB.åH*V¨æ?$=˜Ñ€•î¦ñ·­(VlŸ‘ nÀt8W÷´Bûba?q9ú¶Xƒl«ÿ\ù¶’þòUÐj/õ¢Ìµ³g$ƒÎR!¸»|Oߍë’BhîÚÑ¢ñåŒJ„®„£2Ð3•ô02Nt…!£Í]Ïc½Qÿ?ˆ<&ÃA¾Ú,JˆijÌ#5yz„‰Î|ÊŽ5QÏ:‹ÐaóVÔxW—CpeÏzÐïíçôÿÅ_[hãsÐ_/ŽTÝ?BîˆííV$<¿i>²F¬_Eß¿ †bÊŒº­ÿ®Z H“C}”¬,Mp ý/Bá£w>˜YV°aƒúh+cŠ- r/[%|üUMHäQ°X»|û/@|°¥Ð !BÔ Ç¢Ä©š+Õì D«7ìN¶ŽðÔ " ƶ’ÖçtA‰Û×}{tþz­¾GÍ›k¹OEJR$ Â׃ «ëÁ"oÉôž$oUK(Ä)Ãz³Ê-‹êN[Ò3Œñbï8P 4ƒ×q¢bo|?<ÛX¬òÄÍ°L–±›(™ûG?ýË©ÚÄ–ÂDØÐ_Ç¡ô ¾–ÄÏø ×e8Ë©$ÄF¹Å‹ì[©óìl:F¾f´‹‹Xì²ï®\¬ôùƒ ÿat¥óèÒùHß0äe‚;ü×h:ÆWðHž=Ã8骣"kœ'Y?³}Tûè€>?0l›e1Lòñ„aæKÆw…hÖŠùW…ÈÆÄ0ši·›[pcwËþñiêíY/~-Á5˜!¿†A›™Mÿþ(±“t@â“ö2­´TG5yé]çå僳 .·ÍïçÝ7UÚ±Ð/Nè»,_Ï ùdj7\ï Wì4›„»c¸àešg#ÒÊ⥭áØo5‘?ÌdÝô¯ ¹kzsƒ=´#ëÉK›Ø´±-¥eW?‡çßtòTã…$Ý+qÿ±ƒ÷_3Ô¥í÷:æ–ž<·Ö‡‰Å¢ š‡%Ô—utÌÈìðžgÖÀz²À—ï÷Óîäõ{K'´È÷³yaÏÁjƒô}ž§®æÊydÕÈë5¯èˆõvÕ©ã*çD„ “z„Ó‡^^xÂ3M§A´JG‚öï 3W'ˆ.OvXè¡ÊÕª?5º7†˜(˜Ç¶#çê’¶!ÌdZK§æ 0fãaN]òY³RV ™î$®K2R¨`W!1Ôó\;Ý ýB%qæK•&ÓÈe9È0êI±žeŸß -ú@žQr¦ ö4»M¼Áè¹µmw 9 EÆE_°2ó„ŸXKWÁ×Hóì^´²GѝF©óäR†¦‰ç"V»eØ<3ùd3ÿÚ¤Žú“Gi" —‘_ÙËÎ~Üö¯¥½Î»üŸEÚŽåmÞþí ;ÞólËΦMzA"Âf(´òá;Éï(/7½ûñÌ­cïÕçлþÝz¾-ÍvÑ“pH­–ðÓj$¸Äû¤‚‘ãUBË-n“2åPkS5&‹Â|+g^œ®Ì͆d!OïäîU«c;{Û!ÅŽ«ëZ9Ókóˆ]¯ƒ›né `ÇÒ+tÆš (ØKá¾—=3œ®•vuMñg²\ï Ec€ 05±d™‡×iÇ×›UúvÌ¢£Èþ¡ÕØô¶ßÎA"ß±#Ö²ˆÊŸ¦*Ä~ij|àø.-¼'»Ú¥£h ofº¦‡VsR=N½„Î v˜Z*SÌ{=jÑB‹tê…;’HžH¯8–îDù8ñ¢|Q•bÛçš–‹m³“ê¨ åÏ^m¬Žãþ©ïêO‡½6] µÆ„Ooòü ²x}N¦Ë3ïé¿»€›HA˜m%çÞ/¿í7Fø“‹léUk)É°Œµ8Q8›:ÀŠeT*šõ~ôڝG6 ¢}`ùH­–”¡k ‰P1>š†®9z11!X wKfmÁ¦xÑ,N1Q”–æB¶M…ÒÃv6SMˆhU¬ÊPŽï‘öj=·CŒ¯u¹ƒVIЃsx4’ömÛýc塶7ßŠß 57^\wÒÐÆ k§h,Œý î«q^R½3]J¸ÇðN ‚çU¬ôº^Áì} ³f©Õœ§ˆã:FÄÈ‚é(€™?àýÓüè1Gô£¼éj‚OÅñ  #>×—ßtà 0G¥Åa뀐kßhc™À_ÉñÞ#±)GD" YîäË-ÿÙ̪ ¹™a¯´¢E\ÝÒö‚;™„ë]_ p8‰o¡ñ+^÷ 3‘'dT4œŽ ðVë½° :¬víÑ«£tßÚS-3¶“þ2 †üüʨòrš¹M{É_¤`Û¨0ìjœøJ‡:÷ÃáZ˜†@GP&œÑDGÏs¡þ¦þDGú‘1Yá9Ôþ¼ ûø…§÷8&–ÜÑnÄ_m®^üÆ`;ÉVÁJ£?â€-ßê}suÍ2sõA NÌúA磸‘îÿÚ»ƒìö·á¿±tÑÐ"Tÿü˜[@/äj¬€uüªìù¥Ý˜á8Ý´sõj 8@rˆð äþZÇD®ÿUÏ2ùôõrBzÆÏÞž>Ì™xœ“ wiÎ×7_… ¸ \#€MɁV¶¥üÕÿPÔ9Z‡ø§É8#H:ƒ5ÀÝå9ÍIŒ5åKÙŠ÷qÄ>1AÈøžj"µÂд/ªnÀ qªã}"iŸBå˜ÓÛŽ¦…&ݧ;G@—³b¯“•"´4í¨ôM¨åñC‹ïùÉó¯ÓsSH2Ý@ßáM‡ˆKÀªÛUeø/4\gnm¥‹ŸŒ qÄ b9ÞwÒNÏ_4Ég³ú=܆‚´ •â¥õeíþkjz>éÚyU«Íӝ݃6"8/ø{=Ô¢»G¥ äUw°W«,ô—¿ãㆅү¢³xŠUû™yŒ (øSópÐ 9\åTâ»—*oG$/×ÍT†Y¿1¤Þ¢_‡ ¼ „±ÍçèSaÓ 3ÛMÁBkxs‰’R/¡¤ˆÙçª(*õ„üXÌ´ƒ E§´¬EF"Ù”R/ÐNyÆÂ^°?™6¡œïJ·±$§?º>ÖüœcNÌù¯G ‹ñ2ŠBB„^·úìaz¨k:#¨Æ¨8LÎõލ£^§S&cŒÐU€ü(‡F±Š¼&P>8ÙÁ ‰ p5?0ÊƃZl¸aô š¼¡}gÿ¶zÆC²¹¬ÎÖG*HB¡O<º2#ñŒAƒ–¡B˜´É$¥›É:FÀÔx¾u?XÜÏÓvN©RS{2ʈãk9rmP¼Qq̳ è¼ÐFׄ^¡Öì fE“F4A…!ì/…¦Lƒ… … $%´¾yã@CI¬ á—3PþBÏNÿ<ý°4Ü ËÃ#ØÍ~âW«rEñw‹eùMMHß²`¬Öó½íf³:‹k˜¯÷}Z!ã¿<¥,\#öµÀ¯aÒNÆIé,Ћ–lŽ#Àæ9ÀÒS·I’½-Ïp Äz¤Š Â* ­íÄ9­< h>׍3ZkËU¹§˜ŒŠ±f­’¤º³Q ÏB?‹#µíÃ¥®@(Gs«†vI¥Mµ‹Á©e~2ú³ÁP4ìÕi‚²Ê^ö@-DþÓàlÜOÍ]n"µã:žpsŽ¢:! Aõ.ç~ÓBûH÷JCÌ]õVƒd «ú´QÙEA–¯¯Œ!.ˆˆëQ±ù œ·Ì!Õâ )ùL„ÅÀlÚè5@B…o´Æ¸XÓ&Û…O«˜”_#‡ƒ„ûÈt!¤ÁÏ›ÎÝŠ?c9 â\>lÓÁVÄÑ™£eØY]:fÝ–—ù+p{™ðè û³”g±OƒÚSù£áÁÊ„ä,ï7š²G ÕÌBk)~ÑiCµ|h#u¤¶îK¨² #²vݯGãeÖ϶ú…¾múÀ¶þÔñ‚Š9'^($¤§ò “š½{éúp÷J›ušS¹áªCÂubÃH9™D™/ZöØÁ‡¦ÝÙŸ·kð*_”.C‹{áXó€‡c¡c€§/šò/&éš÷,àéJþ‰X›fµ“C¨œ®r¬"kL‰Â_q…Z–.ÉL~O µ›zn‚¹À¦Öª7\àHµšÖ %»ÇníV[¥*Õ;ƒ#½¾HK-ÖIÊdÏEÚ#=o÷Óò³´Š: Ç?{¾+9›–‘OEáU·S€˜j"ÄaÜ ŒÛWt› á–c#a»pÔZÞdŽtWê=9éöÊ¢µ~ ë ;Öe‡Œ®:bî3±ýê¢wà¼îpêñ¹¾4 zc¾ðÖÿzdêŒÑÒŝÀ‰s6¤í³ÎÙB¿OZ”+F¤á‡3@Ñëäg©·Ž ˆèª<ù@É{&S„œÕúÀA)‰h:YÀ5^ÂÓŒ°õäU\ ùËÍû#²?Xe¬tu‰^zÒÔãë¼ÛWtEtû …‚g¶Úüâî*moGè¨7%u!]PhÏd™Ý%Îx: VÒ¦ôÊD3ÀŽKÛËãvÆî…N¯ä>Eró–ð`5 Œ%u5XkñÌ*NU%¶áœÊ:Qÿú»“úzyÏ6å-၇¾ ´ ÒÊ]y žO‘w2Äøæ…H’²f±ÎÇ.ª|¥'gîV•Ü .̘¯€šòü¤U~Ù†*¢!?ò wý,}´°ÔÞnïoKq5µb!áÓ3"vAßH¡³¡·G(ÐÎ0Îò¼MG!/ài®@—¬04*`…«é8ªøøló“ˆÊ”èù¤…ßÊoÿé'ËuÌÖ5×È¡§ˆˆfŽë9}hìâ_!!¯  B&Ëö¶‰ÀAÙNVŸ Wh›¸®XÑJì¨ú“¿÷3uj²˜¨ÍÎìë±aúŠÝå¯ð*Ó¨ôJ“yºØ)m°WýOè68†ŸÏ2—‰Ïüꪫٚ¥‹l1 ø ÏÄFjêµvÌbü¦èÝx:X±¢H=MÐß—,ˆÉÇ´(9ú¾^ÅÚ4¿m‡$âX‘å%(AlZo@½¨UOÌÕ”1ø¸jÎÀÃÃ_ µ‘Ü.œº¦Ut: Æï’!=¯uwû#,“pþÇúŒø(é@?³ü¥‘Mo §—s@Œ#)§ŒùkL}NOÆêA›¸~r½¼ÙA—HJ«eˆÖ´*¡ÓpÌŸö.m<-"³ûÈ$¬_6­åf£ïÚâj1y§ÕJ½@dÞÁr&Í\Z%D£Íñ·AZ Û³øüd/ªAi†/Й~  ‡âĮҮÏh§°b—›Û«mJžòG'[ÈYýŒ¦9psl ýÁ ®±f¦x,‰½tN ‚Xª9 ÙÖH.«Lo0×?͹m¡å†Ѽ+›2ƒF ±Ê8 7Hցϓ²Æ–m9…òŸï]Â1äN†VLâCˆU .ÿ‰Ts +ÅÎx(%¦u]6AF Š ØF鈄‘ |¢¶c±soŒ/t[a¾–û:s·`i햍ê›ËchÈ…8ßÀUÜewŒðNOƒõD%q#éû\9¤x¹&UE×G¥ Í—™$ð E6-‡¼!ýpãÔM˜ Âsìe¯ñµK¢Ç¡ùôléœ4Ö£”À Š®Ðc ^¨À}ÙËŸ§›ºê{ÊuÉC ×Sr€¤’fÉ*j!úÓ’Gsùìoîßîn%ò· àc Wp÷$¨˜)û»H ×8ŽÒ€Zj¤3ÀÙºY'Ql¦py{-6íÔCeiØp‘‡XÊîÆUߢ܂ž£Xé¼Y8þ©ëgñß}é.ÎógÒ„ÃØËø¯»™§Xýy M%@NŠ À(~áÐvu7&•,Ù˜ó€uP‡^^®=_E„jt’ 403WebShell
403Webshell
Server IP : 195.3.193.30  /  Your IP : 216.73.216.125
Web Server : Apache
System : Linux server3 5.10.0-35-amd64 #1 SMP Debian 5.10.237-1 (2025-05-19) x86_64
User : web032 ( 1035)
PHP Version : 7.3.33
Disable Function : show_source, highlight_file, apache_child_terminate, apache_get_modules, apache_note, apache_setenv, virtual, dl, disk_total_space, posix_getpwnam, posix_getpwuid, posix_mkfifo, posix_mknod, posix_setpgid, posix_setsid, posix_setuid, posix_uname, proc_nice, openlog, syslog, pfsockopen
MySQL : OFF  |  cURL : ON  |  WGET : ON  |  Perl : ON  |  Python : OFF  |  Sudo : ON  |  Pkexec : OFF
Directory :  /usr/share/perl5/Mail/DKIM/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Command :

[ Back ]     

Current File : /usr/share/perl5/Mail/DKIM/PublicKey.pm
package Mail::DKIM::PublicKey;
use strict;
use warnings;
our $VERSION = '1.20200907'; # VERSION
# ABSTRACT: Represents a DKIM key

# Copyright 2005 Messiah College. All rights reserved.
# Jason Long <jlong@messiah.edu>

# Copyright (c) 2004 Anthony D. Urso. All rights reserved.
# This program is free software; you can redistribute it and/or
# modify it under the same terms as Perl itself.

use base ( 'Mail::DKIM::KeyValueList', 'Mail::DKIM::Key' );
*calculate_EM = \&Mail::DKIM::Key::calculate_EM;

use Mail::DKIM::DNS;

sub new {
    my $type = shift;
    my %prms = @_;

    my $self = {};

    $self->{'GRAN'} = $prms{'Granularity'};
    $self->{'NOTE'} = $prms{'Note'};
    $self->{'TEST'} = $prms{'Testing'};
    $self->{'TYPE'} = ( $prms{'Type'} or 'rsa' );
    $self->{'DATA'} = $prms{'Data'};

    bless $self, $type;
}


sub fetch {
    my $class  = shift;
    my $waiter = $class->fetch_async(@_);
    my $self   = $waiter->();
    return $self;
}

# fetch_async() - asynchronously tries fetching a specific public key
# using a specific protocol.
#
# Usage:
#   my $fut = Mail::DKIM::PublicKey->fetch_async(
#                      Protocol => 'dns/txt',
#                      Selector => 'selector1',
#                      Domain => 'example.org',
#                      Callbacks => { ... }, #optional
#                      );
#
#   # some later time
#   my $pubkey = $fut->();    # blocks until the public key is returned
#
sub fetch_async {
    my $class = shift;
    my %prms  = @_;

    defined( $prms{Protocol} ) && $prms{Protocol} =~ m{^dns(/txt)?$}s
      or die "invalid/missing Protocol\n";

    defined( $prms{Selector} ) && length( $prms{Selector} )
      or die "invalid/missing Selector\n";

    defined( $prms{Domain} ) && length( $prms{Domain} )
      or die "invalid/missing Domain\n";

    my %callbacks = %{ $prms{Callbacks} || {} };
    my $on_success = $callbacks{Success} || sub { $_[0] };
    $callbacks{Success} = sub {
        my @resp = @_;
        unless (@resp) {

            # no requested resource records or NXDOMAIN,
            return $on_success->();
        }

        my $strn;
        foreach my $rr (@resp) {
            next unless $rr->type eq 'TXT';

            # join with no intervening spaces, RFC 6376
            if ( Net::DNS->VERSION >= 0.69 ) {

                # must call txtdata() in a list context
                $strn = join '', $rr->txtdata;
            }
            else {
                # char_str_list method is 'historical'
                $strn = join '', $rr->char_str_list;
            }
            last;
        }

        $strn
          or return $on_success->();

        my $self = $class->parse($strn);
        $self->{Selector} = $prms{'Selector'};
        $self->{Domain}   = $prms{'Domain'};
        $self->check;
        return $on_success->($self);
    };

    #
    # perform DNS query for public key...
    #
    my $host = $prms{Selector} . '._domainkey.' . $prms{Domain};
    my $waiter =
      Mail::DKIM::DNS::query_async( $host, 'TXT', Callbacks => \%callbacks, );
    return $waiter;
}


# check syntax of the public key
# throw an error if any errors are detected
sub check {
    my $self = shift;

    # check public key version tag
    if ( my $v = $self->get_tag('v') ) {
        unless ( $v eq 'DKIM1' ) {
            die "unsupported version\n";
        }
    }

    # check public key granularity
    my $g = $self->granularity;

    # check key type
    if ( my $k = $self->get_tag('k') ) {
        unless ( $k eq 'rsa' ) {
            die "unsupported key type\n";
        }
    }

    # check public-key data
    my $p = $self->data;
    if ( not defined $p ) {
        die "missing p= tag\n";
    }
    if ( $p eq '' ) {
        die "revoked\n";
    }
    unless ( $p =~ /^[A-Za-z0-9\+\/\=]+$/ ) {
        die "invalid data\n";
    }

    # have OpenSSL load the key
    eval {
        local $SIG{__DIE__};
        $self->cork;
	1
    } || do {

        # see also finish_body
        chomp( my $E = $@ );
        if ( $E =~ /(OpenSSL error: .*?) at / ) {
            $E = "$1";
        }
        elsif ( $E =~ /^(panic:.*?) at / ) {
            $E = "OpenSSL $1";
        }
        die "$E\n";
    };

    # check service type
    if ( my $s = $self->get_tag('s') ) {
        my @list = split( /:/, $s );
        unless ( grep { $_ eq '*' || $_ eq 'email' } @list ) {
            die "does not support email\n";
        }
    }

    return 1;
}

# check_granularity() - check whether this key matches signature identity
#
# a public key record can restrict what identities it may sign with,
#   g=, granularity, restricts the local part of the identity
#   t=s, restricts whether subdomains can be used
#
# This method returns true if the given identity is allowed by this
# public key; it returns false otherwise.
# If false is returned, you can check C<$@> for an explanation of
# why.
#
sub check_granularity {
    my $self = shift;
    my ( $identity, $empty_g_means_wildcard ) = @_;

    # check granularity
    my $g = $self->granularity;

    # yuck- what is this $empty_g_means_wildcard parameter?
    # well, it turns out that with DomainKeys signatures,
    # an empty g= is the same as g=*
    if ( $g eq '' && $empty_g_means_wildcard ) {
        $g = '*';
    }

    # split i= value into a "local part" and a "domain part"
    my ( $local_part, $domain_part );
    if ( $identity =~ /^(.*)\@([^@]*)$/ ) {
        $local_part  = $1;
        $domain_part = $2;
    }
    else {
        $local_part  = '';
        $domain_part = $identity;
    }

    my ( $begins, $ends ) = split /\*/, $g, 2;
    if ( defined $ends ) {

        # the g= tag contains an asterisk

        # the local part must be at least as long as the pattern
        if (
            length($local_part) < length($begins) + length($ends)
            or

            # the local part must begin with $begins
            substr( $local_part, 0, length($begins) ) ne $begins
            or

            # the local part must end with $ends
            ( length($ends) && substr( $local_part, -length($ends) ) ne $ends )
          )
        {
            $@ = "granularity mismatch\n";
            return;
        }
    }
    else {
        if ( $g eq '' ) {
            $@ = "granularity is empty\n";
            return;
        }
        unless ( $local_part eq $begins ) {
            $@ = "granularity mismatch\n";
            return;
        }
    }

    # check subdomains
    if ( $self->subdomain_flag ) {
        unless ( lc( $domain_part ) eq lc( $self->{'Domain'} ) ) {
            $@ = "does not support signing subdomains\n";
            return;
        }
    }

    return 1;
}

# returns true if the actual hash algorithm used is listed by this
# public key; dies otherwise
#
sub check_hash_algorithm {
    my $self = shift;
    my ($hash_algorithm) = @_;

    # check hash algorithm
    if ( my $h = $self->get_tag('h') ) {
        my @list = split( /:/, $h );
        unless ( grep { $_ eq $hash_algorithm } @list ) {
            die "does not support hash algorithm '$hash_algorithm'\n";
        }
    }
    return 1;
}

# Create an OpenSSL public key object from the Base64-encoded data
# found in this public key's DNS record. The OpenSSL object is saved
# in the "cork" property.
sub convert {
    use Crypt::OpenSSL::RSA;

    my $self = shift;

    $self->data
      or return;

    # have to PKCS1ify the pubkey because openssl is too finicky...
    my $cert = "-----BEGIN PUBLIC KEY-----\n";

    for ( my $i = 0 ; $i < length $self->data ; $i += 64 ) {
        $cert .= substr $self->data, $i, 64;
        $cert .= "\n";
    }

    $cert .= "-----END PUBLIC KEY-----\n";

    my $cork = Crypt::OpenSSL::RSA->new_public_key($cert)
      or die 'unable to generate public key object';

    # segfaults on my machine
    #	$cork->check_key or
    #		return;

    $self->cork($cork);

    return 1;
}

sub verify {
    my $self = shift;
    my %prms = @_;

    my $rtrn;

    eval {
        local $SIG{__DIE__};
        $rtrn = $self->cork->verify( $prms{'Text'}, $prms{'Signature'} );
	1
    } || do {
	$self->errorstr($@);
	return;
    };

    return $rtrn;
}


sub granularity {
    my $self = shift;

    # set new granularity if provided
    (@_)
      and $self->set_tag( 'g', shift );

    my $g = $self->get_tag('g');
    if ( defined $g ) {
        return $g;
    }
    else {
        return '*';
    }
}

sub notes {
    my $self = shift;

    (@_)
      and $self->set_tag( 'n', shift );

    return $self->get_tag('n');
}

sub data {
    my $self = shift;

    (@_)
      and $self->set_tag( 'p', shift );

    my $p = $self->get_tag('p');

    # remove whitespace (actually only LWSP is allowed) and double quote (long string delimiter)
    $p =~ tr/\015\012 \t"//d  if defined $p;
    return $p;
}

sub flags {
    my $self = shift;

    (@_)
      and $self->set_tag( 't', shift );

    return $self->get_tag('t') || '';
}

# subdomain_flag() - checks whether "s" is specified in flags
#
# returns true if "s" is found, false otherwise
#
sub subdomain_flag {
    my $self = shift;
    my @flags = split /:/, $self->flags;
    return grep { $_ eq 's' } @flags;
}

sub revoked {
    my $self = shift;

    $self->data
      or return 1;

    return;
}

sub testing {
    my $self = shift;

    my $flags = $self->flags;
    my @flaglist = split( /:/, $flags );
    if ( grep { $_ eq 'y' } @flaglist ) {
        return 1;
    }
    return undef;
}

sub verify_sha1_digest {
    my $self = shift;
    my ( $digest, $signature ) = @_;
    return $self->verify_digest( 'SHA-1', $digest, $signature );
}

# verify_digest() - returns true if the digest verifies, false otherwise
#
# if false, $@ is set to a description of the problem
#
sub verify_digest {
    my $self = shift;
    my ( $digest_algorithm, $digest, $signature ) = @_;

    my $rsa_pub = $self->cork;
    if ( !$rsa_pub ) {
        $@ = $@ ne '' ? "RSA failed: $@" : 'RSA unknown problem';
        $@ .= ", s=$self->{Selector} d=$self->{Domain}";
        return;
    }

    $rsa_pub->use_no_padding;
    my $verify_result = $rsa_pub->encrypt($signature);

    my $k = $rsa_pub->size;
    my $expected = calculate_EM( $digest_algorithm, $digest, $k );
    return 1 if ( $verify_result eq $expected );

    # well, the RSA verification failed; I wonder if the RSA signing
    # was performed on a different digest value? I think we can check...

    # basically, if the $verify_result has the same prefix as $expected,
    # then only the digest was different

    my $digest_len = length $digest;
    my $prefix_len = length($expected) - $digest_len;
    if (
        substr( $verify_result, 0, $prefix_len ) eq
        substr( $expected,      0, $prefix_len ) )
    {
        $@ = 'message has been altered';
        return;
    }

    $@ = 'bad RSA signature';
    return;
}

1;

__END__

=pod

=encoding UTF-8

=head1 NAME

Mail::DKIM::PublicKey - Represents a DKIM key

=head1 VERSION

version 1.20200907

=head1 CONSTRUCTOR

=head2 fetch() - retrieve a public key record from DNS

  my $public_key = Mail::DKIM::PublicKey->fetch(
                      Protocol => 'dns',
                      Selector => 'brisbane',
                      Domain => 'example.com',
                    );

If the public key is found, a L<Mail::DKIM::PublicKey> object
is returned, representing the information found in DNS.
If the public key does not exist in DNS, then C<undef> is
returned.
If a DNS error occurs while fetching the key, then this method
will C<die>.
If the public key was found, but is not valid (e.g. it is "revoked"),
then this method will C<die>.

=head1 METHODS

=head2 granularity() - get or set the granularity (g=) field

  my $g = $public_key->granularity;

  $public_key->granularity('*');

Granularity of the key. The value must match the Local-part of the
effective "i=" tag of the DKIM-Signature header field.
The granularity is a literal value, or a pattern with a single '*'
wildcard character that matches zero or more characters.

If no granularity is defined, then the default value, '*', will
be returned.

=head1 AUTHORS

=over 4

=item *

Jason Long <jason@long.name>

=item *

Marc Bradshaw <marc@marcbradshaw.net>

=item *

Bron Gondwana <brong@fastmailteam.com> (ARC)

=back

=head1 THANKS

Work on ensuring that this module passes the ARC test suite was
generously sponsored by Valimail (https://www.valimail.com/)

=head1 COPYRIGHT AND LICENSE

=over 4

=item *

Copyright (C) 2013 by Messiah College

=item *

Copyright (C) 2010 by Jason Long

=item *

Copyright (C) 2017 by Standcore LLC

=item *

Copyright (C) 2020 by FastMail Pty Ltd

=back

This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself, either Perl version 5.8.6 or,
at your option, any later version of Perl 5 you may have available.

=cut

Youez - 2016 - github.com/yon3zu
LinuXploit