perlmail-accept

   1 #! /usr/bin/perl
   2 #
   3 #       $Id$
   4 # Copyright (C) 2002-2003 Jan Kratochvil <project-PerlMail@jankratochvil.net>
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 2 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19
  20
  21 use vars qw($VERSION);
  22 $VERSION=do { my @r=(q$Revision$=~/\d+/g); sprintf "%d.".("%03d"x$#r),@r; };
  23 use strict;
  24 use warnings;
  25
  26
  27 INIT {
  28         require Sys::Syslog;
  29         Sys::Syslog::openlog("perlmail","pid","mail");
  30         my @syslogging_stack;
  31         sub syslogging_on_save
  32         {
  33                 push @syslogging_stack,$SIG{"__WARN__"},$SIG{"__DIE__" };
  34                 $SIG{"__WARN__"}=sub { Sys::Syslog::syslog("warning","WARN: %s",$_[0]); };      # disabled: print STDERR $_[0];
  35                 $SIG{"__DIE__" }=sub { Sys::Syslog::syslog("crit"   ,"DIE: %s" ,$_[0]); };
  36         }
  37         syslogging_on_save();
  38         sub syslogging_restore
  39         {
  40                 $SIG{"__DIE__" }=pop @syslogging_stack;
  41                 $SIG{"__WARN__"}=pop @syslogging_stack;
  42         }
  43         }
  44
  45
  46 use File::Basename;
  47 BEGIN {
  48         use lib $ENV{"PERLMAIL_BASEDIR"} || File::Basename::dirname($0);
  49         use PerlMail::Config;
  50         use PerlMail::Lib;
  51         }
  52
  53 use Mail::Audit qw(MAPS);
  54 require IO::Handle;
  55 use Carp qw(cluck confess);
  56 use POSIX qw(WIFEXITED WEXITSTATUS WIFSIGNALED WTERMSIG WIFSTOPPED WSTOPSIG);
  57 require POSIX;  # for ceil
  58 use User::Utmp;
  59 use Getopt::Long;
  60 require Mail::Address;
  61 require MIME::Words;
  62 require Cz::Cstocs;
  63 require HTML::Entities;
  64 require MIME::Head;
  65 require Lingua::EN::Squeeze;
  66 require Mail::Mailer;
  67 require HTTP::Cookies;
  68 require HTTP::Request;
  69 require LWP::UserAgent;
  70 use URI::Escape 'uri_escape';
  71 require WWW::SMS;
  72 require Authen::SASL;   # Sanity check for &Net::SMTP::auth
  73 use MIME::Base64;
  74
  75
  76 our($Message,@AuditStored,$DoBell);
  77 my %alternates_host;    # from @alternates_host
  78 my %dnsbl_whitelist;    # from @dnsbl_whitelist
  79
  80 # from RedHat "procmail-3.22-5"
  81 # /i should be only $procmailFROM_DAEMON but how it can hurt to /i all?
  82 our $procmailTO_        =qr'^((Original-)?(Resent-)?(To|Cc|Bcc)|(X-Envelope|Apparently(-Resent)?)-To):(.*[^-a-zA-Z0-9_.])?'mio;
  83 our $procmailTO         =qr'^((Original-)?(Resent-)?(To|Cc|Bcc)|(X-Envelope|Apparently(-Resent)?)-To):(.*[^a-zA-Z])?'mio;
  84 our $procmailFROM_DAEMON=qr'^(Mailing-List:|Precedence:.*(junk|bulk|list)|To: Multiple recipients of |(((Resent-)?(From|Sender)|X-Envelope-From):|>?From )([^>]*[^(.%@a-z0-9])?(Post(ma?(st(e?r)?|n)|office)|(send)?Mail(er)?|daemon|m(mdf|ajordomo)|n?uucp|LIST(SERV|proc)|NETSERV|o(wner|ps)|r(e(quest|sponse)|oot)|b(ounce|bs\.smtp)|echo|mirror|s(erv(ices?|er)|mtp(error)?|ystem)|A(dmin(istrator)?|MMGR|utoanswer))(([^).!:a-z0-9][-_a-z0-9]*)?[%@>        ][^<)]*(\(.*\).*)?)?$([^>]|$))'mio;
  85 $procmailFROM_MAILER=qr'^(((Resent-)?(From|Sender)|X-Envelope-From):|>?From )[^>]*\b(Post(ma(st(er)?|n)|office)|(send)?Mail(er)?|daemon|mmdf|n?uucp|ops|r(esponse|oot)|(bbs\.)?smtp(error)?|s(erv(ices?|er)|ystem)|A(dmin(istrator)?|MMGR))(([^).!:a-z0-9][-_a-z0-9]*)?[%@>      ][^<)]*(\(.*\).*)?)?$([^>]|$)'mio;
  86 # perl-5.8.0 does not cope w/original FROM_MAILER on the third '?' character
  87 # Thus we did '([^>]*[^(.%@a-z0-9])?' -> '[^>]*\b', I hope it is somehow similiar
  88 # original FROM_MAILER  =qr'^(((Resent-)?(From|Sender)|X-Envelope-From):|>?From )([^>]*[^(.%@a-z0-9])?(Post(ma(st(er)?|n)|office)|(send)?Mail(er)?|daemon|mmdf|n?uucp|ops|r(esponse|oot)|(bbs\.)?smtp(error)?|s(erv(ices?|er)|ystem)|A(dmin(istrator)?|MMGR))(([^).!:a-z0-9][-_a-z0-9]*)?[%@>    ][^<)]*(\(.*\).*)?)?$([^>]|$)'mio;
  89
  90 my $opt_mode;
  91 my $opt_smstest;        # 1 or $smscount
  92 my $opt_idle;
  93 my $opt_dry;
  94 my $opt_single;
  95
  96
  97 sub process;
  98
  99 sub stdin
 100 {
 101         syslogging_restore();   # This is more a debugging session
 102         local $/="\n";
 103         my $message="";
 104         local $_;
 105         while (<>) {
 106                 die "Invalid 'From ' line: $_" if $message eq "" && !/^From /;
 107                 if (!$opt_single && /^From / && $message) {
 108                         process $message;
 109                         $message="";
 110                         }
 111                 $message.=$_;
 112                 }
 113         process $message if $message;
 114         exit 0;
 115 }
 116
 117 # FIXME: separate 'perlmail'-transfer together with perlmail-submit away
 118 sub inetd
 119 {
 120         die "Excessive arguments" if @ARGV;
 121
 122         IO::Handle::autoflush STDOUT 1;
 123
 124         while (1) {
 125                 local $/="\n";
 126                 my $length=<STDIN>;
 127                 confess "Unexpected EOF" if !defined $length;
 128                 confess "Missing EOL" if $length!~s/\n$//s;
 129                 exit 0 if $length eq "BYE";
 130                 confess "Unrecognized length: $length" if $length!~/^\d+$/;
 131                 my $message;
 132                 local $_;
 133                 $length==($_=read STDIN,$message,$length) or confess "Got $_ out of required $length bytes";
 134                 $length==length $message or confess "False read return ".length($message)." instead of $length";
 135                 {
 136                         local *STDOUT;  # FIXME: fd's inherited by spawned processes are not closed this way!
 137                         local *STDERR;  # FIXME: fd's inherited by spawned processes are not closed this way!
 138                         local $DoBell=0;
 139                         process $message;
 140                         if ($DoBell) {
 141                                 bell() or warn "Unable to BELL";
 142                                 }
 143                         }
 144                 print STDOUT "1";
 145                 }
 146         die "NOTREACHED";
 147 }
 148
 149 sub bell
 150 {
 151         local *BELL;
 152         open BELL,">/dev/tty11" or return 0;
 153         print BELL "\x07";
 154         close BELL or return 0;
 155         return 1;
 156 }
 157
 158 sub useridle
 159 {
 160         return 0 if ! -e "$HOME/away";
 161         my %valid_users=map(($_=>1),@ValidUsers);
 162         my($idlebest,$linebest);
 163         for my $utmp (User::Utmp::getut(),{ "ut_line"=>"psaux" }) {
 164                 local $_;
 165                 next if defined($_=$utmp->{"ut_type"}) && $_!=User::Utmp::USER_PROCESS;
 166                 next if defined($_=$utmp->{"ut_user"}) && !$valid_users{$_};
 167                 my $line="/dev/".$utmp->{"ut_line"};
 168                 my $atime=(stat $line)[8];
 169                 my $what="user \"".($utmp->{"ut_user"} || "<local>")."\", line \"$line\"";
 170                 warn "Unable to stat $what" and next if !$atime;
 171                 my $idle=time()-$atime;
 172                 warn "atime in future for $what" and next if $idle<0;
 173                 next if $idle>$IdleMax;
 174                 next if defined $idlebest && $idlebest<=$idle;
 175                 $idlebest=$idle;
 176                 $linebest=$line;
 177                 }
 178         return !wantarray() ? $idlebest : ($idlebest,$linebest);
 179 }
 180
 181 # return only the very (recursive) first part
 182 sub body_first
 183 {
 184         return $Audit if !$Audit->is_mime();
 185         my $first=$Audit;
 186         local $_;
 187         $first=$_ while $_=$first->parts(0);
 188         return $first;
 189 }
 190
 191 sub mimehead
 192 {
 193 my($part)=@_;
 194
 195         return $Audit->is_mime() ? $part->head()
 196                         : MIME::Head->new([ split "\n",$Audit->head()->as_string() ])
 197                         ;
 198 }
 199
 200 sub mimebody
 201 {
 202 my($part)=@_;
 203
 204         # be vary cautious here as most of $part methods will encode it!
 205         return join "",@{$Audit->body()} if !$Audit->is_mime();
 206         my $bodyhandle=$part->bodyhandle();
 207         # If MIME is corrupted we don't get bodyhandle() for this part
 208         # It may occur when "boundary" is specified by header but no such boundary is found in the body
 209         return $bodyhandle->as_string() if $bodyhandle;
 210         warn "MIME corrupted, adapting";
 211         return $part->body_as_string();
 212 }
 213
 214 sub mime_type
 215 {
 216 my($part)=@_;
 217
 218         return $Audit->is_mime() ? $part->effective_type() : mimehead($part)->mime_type();
 219 }
 220
 221 sub body_simple
 222 {
 223         my $first=body_first();
 224         my $r=mimebody($first);
 225         my $mime_type=mime_type($first);
 226            if ($mime_type eq "text/html") {
 227                 # HTML::FormatText just does a useless text layouts
 228                 # PerlIO::via::StripHTML probably needs PerlIO input (?)
 229                 $r=~s/<[^>]*>//gs;
 230                 $r=HTML::Entities::decode($r);
 231                 # FIXME: detect charset from <meta> tag: "Content-type: text/html; charset=<???>"
 232                 }
 233         elsif ($mime_type eq "application/pgp-encrypted"
 234                && (my $filename=mimehead($first)->mime_attr("Content-Disposition.filename"))
 235                ) {
 236                 # first part contains just "Version: 1" as of GnuPG v1.0.4 (GNU/Linux)
 237                 $r="pgp($filename)";
 238                 }
 239         if ((my $charset=mimehead($first)->mime_attr("Content-Type.charset"))) {
 240                 my $cstocs=Cz::Cstocs->new($charset,"ascii");
 241                 $r=&$cstocs($r) if $cstocs;     # charset may be unknown
 242                 }
 243         return $r;
 244 }
 245
 246 sub parts_linear
 247 {
 248 my($part)=@_;
 249
 250         return $Audit if !$part && !$Audit->is_mime();
 251         $part||=$Audit;
 252         # don't use '!$part->parts()' as even 0-parts-multiparts are still multiparts
 253         return $part if $part->bodyhandle();
 254         return map { (parts_linear($_)); } $part->parts();
 255 }
 256
 257 sub smsbuild
 258 {
 259 my($smsi,$smscount)=@_;
 260
 261         return "$smsi/$smscount:" if $smscount>1;
 262         return "";
 263 }
 264
 265 sub smslens
 266 {
 267 my($ignorenewmail,$smscount,%args)=@_;
 268
 269         return map({
 270                         my $l=160;
 271                         if (!$ignorenewmail) {  # send by mail
 272                                 $l-=length("Z emailu FIXME SMSmailError: ");
 273                                 $l-=length(smsbuild($_,$smscount));
 274                                 }
 275                         else {  # send by web
 276                                 $l-=6;  # 154 is the max length before split; why?
 277                                 }
 278                         $l;
 279                         } (0..$smscount-1));
 280 }
 281
 282 sub smssend_web
 283 {
 284 my($squeezed,$smscount,@lens)=@_;
 285
 286         $smscount=POSIX::ceil($smscount/5);
 287         for my $smsi (0..$smscount-1) {
 288                 my $len=$lens[$smsi];
 289                 $squeezed=~/^.{0,$len}/s;
 290                 my $frag=$&;
 291                 $squeezed=$';
 292                 return 0 if 3!=@SMSwebRcpt;
 293                 local *F;
 294                 open F,"$HOME/priv/WWW-SMS-$SMSwebRcpt_username.pwd" or return 0;
 295                 my $pwd=<F>;
 296                 chomp $pwd;
 297                 close F;
 298                 my $sms=WWW::SMS->new(@SMSwebRcpt,$frag,"username"=>$SMSwebRcpt_username,"passwd"=>$pwd);
 299                 for ($sms->gateways("sorted"=>"reliability")) {
 300                         last if $sms->send($_);
 301                         Sys::Syslog::syslog("warning","Web SMS send failed: %s",$WWW::SMS::Error);
 302                         my $void=$WWW::SMS::Error;      # Prevent: Name "WWW::SMS::Error" used only once
 303                         }
 304                 }
 305         return 1;
 306 }
 307
 308 sub smssend_mail
 309 {
 310 my($squeezed,$smscount,@lens)=@_;
 311
 312         return 0;
 313 }
 314
 315 sub smssend
 316 {
 317 my($ignorenewmail,$smscount,%args)=@_;
 318
 319         my $text=PerlMail::Config::audit_sms(
 320                         "subject"=>unmime($Audit->subject()),
 321                         "from"=>[ Mail::Address->parse(unmime($Audit->from())) ],
 322                         "body"=>substr(body_simple(),0,$MaxBodySMS*(1+0.25*$smscount)),
 323                         %args);
 324         my $texthead="";
 325         ($texthead,$text)=@$text if ref $text;
 326         do { print "$texthead\n$text\n"; return; } if $opt_smstest;
 327         my @lens=smslens($ignorenewmail,$smscount,%args);
 328         my $maxlen=0;
 329         $maxlen+=$_ for (@lens);
 330         my $squeezed;
 331         for my $squeeze (@sms_squeezes) {
 332                 local $_;
 333                  Lingua::EN::Squeeze::SqueezeControl($_)    if defined ($_=$squeeze->{"SqueezeControl"});
 334                 $Lingua::EN::Squeeze::SQZ_OPTIMIZE_LEVEL or 1;  # prevent: Name "$_" used only once: possible typo
 335                 $Lingua::EN::Squeeze::SQZ_OPTIMIZE_LEVEL=$_ if defined ($_=$squeeze->{"SQZ_OPTIMIZE_LEVEL"});
 336                 $squeezed=Lingua::EN::Squeeze::SqueezeText($text);
 337                 chomp $squeezed;
 338                 last if $maxlen>=length($texthead.$squeezed);
 339                 }
 340         $squeezed=substr $texthead.$squeezed,0,$maxlen; # strip if we passed thru last for() above
 341         my $recalclen=0;
 342         for ($smscount=0;$recalclen<length $squeezed;$smscount++) {
 343                 $recalclen+=$lens[$smscount];
 344                 }
 345         my $func=($ignorenewmail ? \&smssend_web : \&smssend_mail);
 346         &$func($squeezed,$smscount,@lens);
 347 }
 348
 349 sub smssend_tryall
 350 {
 351 my($ignorenewmail,@args)=@_;
 352
 353         return if !$opt_smstest && !$opt_idle && defined useridle();
 354         local $_;
 355         return $_ if                     $_=smssend(1,@args);   # web
 356         return $_ if !$ignorenewmail && ($_=smssend(0,@args));  # mail
 357         warn "Unable to SMSsend the mail";
 358         return 0;
 359 }
 360
 361 sub cut
 362 {
 363         local $_=$_[0];
 364         return "<???>" if !defined($_) || /^\s*$/s;
 365         s/^\s*//s;
 366         s/\s*$//s;
 367         return $_ if length($_)<128;
 368         return substr($_,0,128)."...";
 369 }
 370
 371 our $profile_eval_depth=0;
 372 # ($name || @$name)
 373 sub profile_eval
 374 {
 375 my($name)=@_;
 376
 377         die "Nesting profile: $name" if 0x10<=(local $profile_eval_depth=$profile_eval_depth+1);
 378         return @$name if ref $name;
 379         die "Profile not found: $name" if !exists $audit_profile{$name};
 380         my @this=@{$audit_profile{$name}};
 381         return (profile_eval($'),@this[1..$#this]) if $this[0] && $this[0]=~/^=/;
 382         return @this;
 383 }
 384
 385 sub address_show
 386 {
 387 my($text)=@_;
 388
 389         return join(",",map({ $_->name() or $_->address(); } Mail::Address->parse($text)));
 390 }
 391
 392 sub unmime
 393 {
 394 my($text)=@_;
 395
 396         return join "",map({
 397                         my $cstocs;
 398                         for (${$_}[1],"iso-8859-2") {
 399                                 last if $_ && ($cstocs=Cz::Cstocs->new($_,"ascii"));
 400                                 }
 401                         &$cstocs(${$_}[0]);
 402                         } MIME::Words::decode_mimewords($text));
 403 }
 404
 405 # $folder: "$folder; comment"
 406 # $profile as profile_eval($name)
 407 sub store
 408 {
 409 my($folder,$profile,%args)=@_;
 410
 411         $profile=$store_profile if !$profile;
 412         my %do=map({ (!/=/ ? ($_=>1) : ($`=>$')); } profile_eval($profile));
 413         Sys::Syslog::syslog("info","%s%s%s: %s: %s",
 414                                         (!$opt_dry ? "" : "--dry: "),
 415                                         (!$store_ignore ? "" : "IGNORED[$store_ignore]: "),
 416                                         map({ cut($_); } $folder,address_show(unmime($Audit->from())),unmime($Audit->subject())),
 417                                         )
 418                         if $do{"syslog"} || $opt_dry;
 419         $folder=~s/;.*$//s;
 420         $folder="$Mail/".$' if $folder=~/^=/;
 421         push @AuditStored,$folder if $do{"did"};
 422         return if $store_ignore || $opt_dry;
 423         $DoBell++ if $do{"bell"};
 424         write_message($folder) or die;
 425         smssend_tryall $store_ignorenewmail,$do{"sms"},%args if $do{"sms"};
 426 }
 427
 428 our $did_last=0;
 429
 430 # no &$funcref=>did smth in this block
 431 # &$funcref,@funcargs
 432 sub did
 433 {
 434 my($funcref,@funcargs)=@_;
 435
 436         return @AuditStored!=$did_last if !$funcref;
 437         local $did_last=@AuditStored;
 438         &$funcref(@funcargs);
 439         return @AuditStored!=$did_last;
 440 }
 441
 442 # Never use Mail::Audit->store() as it will reformat MIME bodies and possibly corrupt OpenPGP!
 443 sub write_message
 444 {
 445 my($folder)=@_;
 446
 447         return 1 if $opt_dry;   # simulate OK
 448         local *F;
 449         open F,">>$folder" or do { warn "Append \"$folder\": $!"; return 0; };
 450         {
 451                 local $_;
 452                 ($_=Mail::Audit::audit_get_lock(\*F,$folder)) and do { warn "Lock \"$folder\": $!"; last; };
 453                 seek F,0,IO::Handle::SEEK_END or do { warn "Seek-end \"$folder\": $!"; last; };
 454                 # FIXME: Check for '^From ' to not to rely on our network peer
 455                 print F $Message or do { warn "Write to \"$folder\": $!"; last; };
 456                 do { print F "\n"; warn "Missing trailing newline, fixed"; } if $Message!~/\n$/s;
 457                 close F or do { warn "Close \"$folder\""; last; };
 458                 return 1;       # OK
 459                 }
 460         warn "MAIL DROPPED for folder: $folder";
 461         close F;
 462         return 0;       # failed
 463 }
 464
 465 sub process
 466 {
 467 my($message)=@_;
 468
 469         local $_=$_;
 470         my $save_=$_;
 471         $message=~s/(\n)(From )/$1>$2/sg;
 472         local $Message=$message;
 473         # Cannot call 'local' for our-imported variable:
 474         my $Audit_save=$Audit;
 475         $Audit=Mail::Audit->new(
 476                         "emergency"=>"$Mail/emergency",
 477                         "data"=>[map("$_\n",split("\n",$message))],
 478                         "log"=>"$HOME/.perlmail.log",
 479                         "loglevel"=>99,
 480                         );
 481         local @AuditStored=();
 482         do { smssend 0,$opt_smstest; return; } if $opt_smstest;
 483         write_message("$Mail/input") or die;
 484         PerlMail::Config::audit();
 485         warn 'Corrupted $_, repaired' if defined($save_)!=defined($_) || (defined($_) && $save_ ne $_);
 486         # restore:
 487         $Audit=$Audit_save;
 488 }
 489
 490 # utility functions:
 491
 492 # return: true (error-message or "1") if is spam
 493 sub spamassassin
 494 {
 495 my($cmd)=@_;
 496
 497         $cmd||="$HOME/bin/spamassassin --exit-code";
 498         # spamassassin has exit code 1 if IS spam, code 0 if NOT spam
 499         local *CHILD;
 500         local $SIG{"PIPE"}=sub { warn "spamassassin gave me SIGPIPE: broken pipe"; };
 501         # prevent Razor2's: Can't call method "log" on unblessed reference at Razor2/Client/Agent.pm line 212.
 502         local $ENV{"HOME"}=$HOME;
 503         # 2>/dev/null to prevent error messages to corrupt inetd() output of perlmail-accept(1)
 504         open CHILD,"|$cmd --mbox >/dev/null 2>/dev/null"
 505                         or return 0;
 506         print CHILD $Message;
 507         my $return=close CHILD;
 508         return undef() if !WIFEXITED($?);
 509         return undef() if  WIFSIGNALED($?);
 510         return undef() if  WIFSTOPPED($?);
 511         return 1       if  WEXITSTATUS($?);     # is-spam
 512         return 0;       # not-spam
 513 }
 514
 515 # NOTE: returns undef() if !wantarray and the first header is unrecognized
 516 # Returns also hosts
 517 sub Received_for
 518 {
 519         my @r=();
 520         for my $hdr ($Audit->head->get("Received")) {
 521                 my($for)=($hdr=~/\bfor\s+\<?(\S+)\>?\b/);
 522                 return $for if !wantarray();
 523                 push @r,$for if $for;
 524                 my($from,$fromaddr)=($hdr=~/\bfrom\s+(?:(\S+)\b.*?)??\[((?:\d{1,3}\.){3}\d{1,3})\]/);
 525                 $from=$fromaddr if !defined $from;
 526                 push @r,"$from:$fromaddr" if $from;
 527                 }
 528         return @r;
 529 }
 530
 531 # Extended Mail::Audit::MAPS
 532 # $domain,$full,[$timeout]
 533 sub dnsbl
 534 {
 535 my($domain,$full,$timeout)=@_;
 536
 537         $timeout||=30;  # sec
 538         $Mail::Audit::MAPS::host=$domain;
 539         my @hosts=map({ s/^.*://; "[$_]"; }     # strip DNS part
 540                         grep({ /^([^:@]*):/     # $1 is DNS name, $' is IP address
 541                                         && !$alternates_host{$1}        # leave only foreign hosts
 542                                         && !$dnsbl_whitelist{$'}; } (Received_for()))
 543                         );
 544         splice @hosts,1 if !$full && @hosts;    # "&& @hosts" to prevent: WARN: splice() offset past end of array
 545         {
 546                 package My::Audit::Faked;
 547                 sub received { return @{$_[0]->{"received"}}; }
 548                 }
 549         my $self_faked={
 550                         "received"=>[@hosts],
 551                         };
 552         bless $self_faked,"My::Audit::Faked";
 553         return Mail::Audit::rblcheck($self_faked,$timeout);
 554 }
 555
 556 sub muttrc_aliases
 557 {
 558         my %r=();
 559         for (muttrc()) {
 560                 next if !(my $key=(/^alias\s+(\S+)\s+/)[0]);
 561                 for my $addrobj (Mail::Address->parse($')) {
 562                         my $addr=$addrobj->address();
 563                         my $ref=\$r{"\L$addr"};
 564                         $$ref=$key if !$$ref;   # use always the first occurence to prefer nicks
 565                         }
 566                 }
 567         return %r;
 568 }
 569
 570 # FIXME: host may get multiple recipients and thus not showing "for <...>"
 571 # FIXME: muttrc_get("from") is too strict
 572 sub store_muttrc_alternates
 573 {
 574 my($prefix,$profile)=@_;
 575
 576         my $alternates=muttrc_get("alternates") or return;
 577         my $alternatesre=qr/$alternates/si;
 578         my $From=muttrc_get("from") or return;
 579         my $Fromre=qr/^\Q$From\E$/si;
 580         my $Fromobj=parseone $From or return;
 581         warn "'From' \"$From\" not matched by 'alternates': $alternatesre"
 582                         if $From!~/$alternates/si;
 583         for my $for (reverse Received_for()) {
 584                 $for=~s/:.*$//; # strip IP address here
 585                 my $forobj=parseone $for;
 586                 if ($forobj && $forobj->host()) {
 587                         # it is 'for' our primary address
 588                         next if lc($forobj->host()) eq lc($Fromobj->host());    # or 'return'? shouldn't matter
 589                         }
 590                 next if !$alternates_host{lc $for} && $for!~/$alternatesre/si;
 591                 store "$prefix\L$for",($profile || []);
 592                 return;
 593                 }
 594 }
 595
 596 # $header: ref CODE
 597 # $header: !ref => $Audit->get($header)
 598 # $maybeaddress: qr/regex/i
 599 # $maybeaddress: "string"
 600 # $maybeaddress: "<Regexp:regex>"       # hack :-(
 601 # $maybeaddress: "<user@host>"
 602 # $maybeaddress: "<user@>"
 603 # $maybeaddress: "<@host>"
 604 sub _headercore
 605 {
 606 my($re,$justone,$header,$maybeaddress)=@_;
 607
 608         if (ref $header) {
 609                 $header=join(",",&$header());
 610                 }
 611         else {
 612                 $header=$Audit->get($header);
 613                 }
 614         return 0 if !$header;
 615         return $header=~/$maybeaddress/i if "Regexp" eq ref $maybeaddress;
 616         return $header=~/$re/i if !defined(my $want=($maybeaddress=~/^\<(.*)\>$/)[0]);
 617         my @parsed=Mail::Address->parse($header);
 618         warn "'mailto:' forbidden in pattern: $want" if $want=~/^\Qmailto:\E/;
 619         return 0 if $justone && 1!=@parsed;
 620         return grep {
 621                            if ($want=~/^Regexp:/)
 622                                 { $_->address()=~/$'/i; }
 623                         elsif ($want=~/\@$/)
 624                                 { $_->user()   =~/^(?:\Qmailto:\E)?\Q$`\E/i; }
 625                         elsif ($want=~/^\@/)
 626                                 { $_->host()   =~/^\Q$'\E/i; }
 627                         else
 628                                 { $_->address()=~/^(?:\Qmailto:\E)?\Q$want\E/i; }
 629                         } @parsed;
 630 }
 631
 632 sub headerhas
 633 {
 634 my($header,$substr)=@_;
 635
 636         return _headercore(qr/\Q$substr\E/i,0,$header,$substr);
 637 }
 638
 639 sub headeris
 640 {
 641 my($header,$string)=@_;
 642
 643         return _headercore(qr/\Q$string\E/i,1,$header,$string);
 644 }
 645
 646 # $header,%$map
 647 sub header_remap
 648 {
 649 my($header,$map)=@_;
 650
 651         my $text=$Audit->get($header);
 652         my $orig=$text;
 653         while (my($from,$to)=each(%$map)) {
 654                 $text=~s/\b\Q$from\E\b/$to/gsi;
 655                 }
 656         return if $text eq $orig;
 657         $Audit->put_header("X-PerlMail-header_remap-$header",$orig);
 658         $Audit->replace_header($header,$text);
 659 }
 660
 661 # LMTP engine:
 662 use Net::Cmd qw(CMD_OK CMD_MORE);
 663 {
 664         package My::Net::SMTP::LMTP;
 665         require Net::SMTP;
 666         our @ISA=qw(Net::SMTP);
 667         use Net::SMTP;
 668         use Net::Cmd qw(CMD_OK);
 669         use Carp qw(confess cluck);
 670
 671         # Do not: sub _HELO
 672         # as it would not set {'net_smtp_esmtp'}
 673         sub _EHLO { shift->command("LHLO", @_)->response()  == CMD_OK }
 674
 675         sub clucked
 676         {
 677         my($self,$func,@args)=@_;
 678
 679                 do { return $_ if defined $_; } for $self->$func(@args);
 680                 cluck $func;
 681                 return;
 682         }
 683 }
 684
 685
 686 sub lmtp_deliver
 687 {
 688 my($admin_user,$admin_pwd,$user_from,$user_to)=@_;
 689
 690         my $lmtp=My::Net::SMTP::LMTP->clucked("new","localhost","Port"=>"lmtp",
 691 #                       "Debug"=>1,
 692                         ) or return;
 693         bless $lmtp,"My::Net::SMTP::LMTP";
 694 # Prevent:
 695 # due to:
 696 #       $lmtp->auth(Authen::SASL->new(
 697 #                       "mechanism"=>"PLAIN",
 698 #                       "callback"=>{
 699 #                                       "user"=>$admin_user,
 700 #                                       "pass"=>$admin_pwd,
 701 #                                       # Prevent: "authname"=>$admin_user
 702 #                                       # as it causes: DIE: Unknown callback: 'authname'. (user|auth|language|pass)
 703 #                                       }));
 704         # FIXME: Authentication hack:
 705         $lmtp->command("AUTH PLAIN")->response()==CMD_MORE
 706                         or do { cluck "auth announce"; return; };
 707         $lmtp->clucked("command",encode_base64($user_from."\x00".$admin_user."\x00".$admin_pwd)) or return;
 708         $lmtp->clucked("mail",$user_from) or return;
 709         $lmtp->clucked("to",$user_to) or return;
 710         $lmtp->clucked("data"); # Do not: or return;
 711         # Prevent: 554 5.6.0 Message contains invalid header
 712         (my $data=$Message)=~s/\AFrom .*\r?\n//;
 713         $lmtp->clucked("datasend",$data) or return;
 714         $lmtp->clucked("dataend") or return;
 715         $lmtp->clucked("quit") or return;
 716 }
 717
 718
 719 # MAIN
 720
 721 $Getopt::Long::ignorecase=0;
 722 die "GetOptions error" if !Getopt::Long::GetOptions(
 723                   "inetd"    ,sub { $opt_mode=\&inetd; },
 724                   "stdin"    ,sub { $opt_mode=\&stdin; },
 725                   "single!"  ,\$opt_single,
 726                   "dry"      ,\$opt_dry,
 727                   "smstest:s",sub { $opt_mode=\&stdin; $opt_smstest=($_[1] || 1); },
 728                   "idle!"    ,\$opt_idle,
 729                   "idletest" ,sub { syslogging_restore(); print((defined($_=useridle()) ? $_ : "<undef>")."\n"); exit 0; },
 730                   "muttrc"   ,sub { syslogging_restore(); print scalar muttrc(); exit 0; },
 731                 );
 732 # "Excessive arguments" checked in &inetd
 733 die "Missing mode" if !$opt_mode;
 734
 735 %alternates_host=map((lc($_)=>1),@alternates_host);
 736 %dnsbl_whitelist=map((   $_ =>1),@dnsbl_whitelist);
 737
 738 &$opt_mode();
 739 die "NOTREACHED";