perlmail-accept

   1 #! /usr/bin/perl
   2 #
   3 # $Id$
   4
   5 use vars qw($VERSION);
   6 $VERSION=do { my @r=(q$Revision$=~/\d+/g); sprintf "%d.".("%03d"x$#r),@r; };
   7 use strict;
   8 use warnings;
   9
  10
  11 INIT {
  12         require Sys::Syslog;
  13         Sys::Syslog::openlog("lacemail","pid","mail");
  14         my @syslogging_stack;
  15         sub syslogging_on_save
  16         {
  17                 push @syslogging_stack,$SIG{"__WARN__"},$SIG{"__DIE__" };
  18                 $SIG{"__WARN__"}=sub { Sys::Syslog::syslog("warning","WARN: %s",$_[0]); };      # disabled: print STDERR $_[0];
  19                 $SIG{"__DIE__" }=sub { Sys::Syslog::syslog("crit"   ,"DIE: %s" ,$_[0]); };
  20         }
  21         syslogging_on_save();
  22         sub syslogging_restore
  23         {
  24                 $SIG{"__DIE__" }=pop @syslogging_stack;
  25                 $SIG{"__WARN__"}=pop @syslogging_stack;
  26         }
  27         }
  28
  29
  30 use Mail::Audit qw(MAPS);
  31 require IO::Handle;
  32 use Carp qw(cluck confess);
  33 use POSIX qw(WIFEXITED WEXITSTATUS WIFSIGNALED WTERMSIG WIFSTOPPED WSTOPSIG);
  34 require POSIX;  # for ceil
  35 use User::Utmp;
  36 require File::Basename;
  37 use Getopt::Long;
  38 require Mail::Address;
  39 require MIME::Words;
  40 require Cz::Cstocs;
  41 require HTML::Entities;
  42 require MIME::Head;
  43 require Lingua::EN::Squeeze;
  44 require Mail::Mailer;
  45 require HTTP::Cookies;
  46 require HTTP::Request;
  47 require LWP::UserAgent;
  48 use URI::Escape 'uri_escape';
  49
  50
  51 my $HOME="/home/lace";
  52 my $Mail="$HOME/Mail";
  53 my @ValidUsers=qw(root lace short kratochvil _local);
  54 my $IdleMax=60;
  55 my $MaxBodySMS=0x1000;  # max bytes to pass to Lingua::EN::Squeeze
  56 my $SMSmailError='short+err@ucw.cz';
  57 my $SMSwebRcpt='00420602431329';
  58 my $SMSmailRcpt=$SMSwebRcpt.'@sms.eurotel.cz';
  59 my $SMScontact='<short@ucw.cz>';
  60
  61 our($Message,$Audit,@AuditStored,$store_ignore,$store_ignorenewmail,$store_profile,$DoBell);
  62 our(%audit_profile,@sms_squeezes,@alternates_host);     # imported
  63 my %alternates_host;    # from @alternates_host
  64
  65 # from RedHat "procmail-3.22-5"
  66 # /i should be only $procmailFROM_DAEMON but how it can hurt to /i all?
  67 our $procmailTO_        =qr'^((Original-)?(Resent-)?(To|Cc|Bcc)|(X-Envelope|Apparently(-Resent)?)-To):(.*[^-a-zA-Z0-9_.])?'mio;
  68 our $procmailTO         =qr'^((Original-)?(Resent-)?(To|Cc|Bcc)|(X-Envelope|Apparently(-Resent)?)-To):(.*[^a-zA-Z])?'mio;
  69 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;
  70 our $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;
  71 # perl-5.8.0 does not cope w/original FROM_MAILER on the third '?' character
  72 # Thus we did '([^>]*[^(.%@a-z0-9])?' -> '[^>]*\b', I hope it is somehow similiar
  73 # 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;
  74
  75 my $opt_mode;
  76 my $opt_smstest;        # 1 or $smscount
  77 my $opt_idle;
  78 my $opt_dry;
  79
  80
  81 sub process;
  82
  83 sub stdin
  84 {
  85         syslogging_restore();   # This is more a debugging session
  86         local $/="\n";
  87         my $message="";
  88         local $_;
  89         while (<>) {
  90                 die "Invalid 'From ' line: $_" if $message eq "" && !/^From /;
  91                 if (/^From / && $message) {
  92                         process $message;
  93                         $message="";
  94                         }
  95                 $message.=$_;
  96                 }
  97         process $message if $message;
  98         exit 0;
  99 }
 100
 101 # FIXME: separate 'lacemail'-transfer together with lacemail-submit away
 102 sub inetd
 103 {
 104         die "Excessive arguments" if @ARGV;
 105
 106         IO::Handle::autoflush STDOUT 1;
 107
 108         while (1) {
 109                 local $/="\n";
 110                 my $length=<STDIN>;
 111                 confess "Unexpected EOF" if !defined $length;
 112                 confess "Missing EOL" if $length!~s/\n$//s;
 113                 exit 0 if $length eq "BYE";
 114                 confess "Unrecognized length: $length" if $length!~/^\d+$/;
 115                 my $message;
 116                 local $_;
 117                 $length==($_=read STDIN,$message,$length) or confess "Got $_ out of required $length bytes";
 118                 $length==length $message or confess "False read return ".length($message)." instead of $length";
 119                 {
 120                         local *STDOUT;
 121                         local *STDERR;
 122                         local $DoBell=0;
 123                         process $message;
 124                         if ($DoBell) {
 125                                 bell() or warn "Unable to BELL";
 126                                 }
 127                         }
 128                 print STDOUT "1";
 129                 }
 130         die "NOTREACHED";
 131 }
 132
 133 sub bell
 134 {
 135         local *BELL;
 136         open BELL,">/dev/tty11" or return 0;
 137         print BELL "\x07";
 138         close BELL or return 0;
 139         return 1;
 140 }
 141
 142 sub useridle
 143 {
 144         my %valid_users=map(($_=>1),@ValidUsers);
 145         my($idlebest,$linebest);
 146         for my $utmp (User::Utmp::getut(),{ "ut_line"=>"psaux" }) {
 147                 local $_;
 148                 next if defined($_=$utmp->{"ut_type"}) && $_!=User::Utmp::USER_PROCESS;
 149                 next if defined($_=$utmp->{"ut_user"}) && !$valid_users{$_};
 150                 my $line="/dev/".$utmp->{"ut_line"};
 151                 my $atime=(stat $line)[8];
 152                 my $what="user \"".($utmp->{"ut_user"} || "<local>")."\", line \"$line\"";
 153                 warn "Unable to stat $what" and next if !$atime;
 154                 my $idle=time()-$atime;
 155                 warn "atime in future for $what" and next if $idle<0;
 156                 next if $idle>$IdleMax;
 157                 next if defined $idlebest && $idlebest<=$idle;
 158                 $idlebest=$idle;
 159                 $linebest=$line;
 160                 }
 161         return !wantarray() ? $idlebest : ($idlebest,$linebest);
 162 }
 163
 164 # return only the very (recursive) first part
 165 sub body_first
 166 {
 167         return $Audit if !$Audit->is_mime();
 168         my $first=$Audit;
 169         local $_;
 170         $first=$_ while $_=$first->parts(0);
 171         return $first;
 172 }
 173
 174 sub mimehead
 175 {
 176 my($part)=@_;
 177
 178         return $Audit->is_mime() ? $part->head()
 179                         : MIME::Head->new([ split "\n",$Audit->head()->as_string() ])
 180                         ;
 181 }
 182
 183 sub mimebody
 184 {
 185 my($part)=@_;
 186
 187         # be vary cautious here as most of $part methods will encode it!
 188         return join "",@{$Audit->body()} if !$Audit->is_mime();
 189         my $bodyhandle=$part->bodyhandle();
 190         # If MIME is corrupted we don't get bodyhandle() for this part
 191         # It may occur when "boundary" is specified by header but no such boundary is found in the body
 192         return $bodyhandle->as_string() if $bodyhandle;
 193         warn "MIME corrupted, adapting";
 194         return $part->body_as_string();
 195 }
 196
 197 sub mime_type
 198 {
 199 my($part)=@_;
 200
 201         return $Audit->is_mime() ? $part->effective_type() : mimehead($part)->mime_type();
 202 }
 203
 204 sub body_simple
 205 {
 206         my $first=body_first();
 207         my $r=mimebody($first);
 208         my $mime_type=mime_type($first);
 209            if ($mime_type eq "text/html") {
 210                 # HTML::FormatText just does a useless text layouts
 211                 # PerlIO::via::StripHTML probably needs PerlIO input (?)
 212                 $r=~s/<[^>]*>//gs;
 213                 $r=HTML::Entities::decode($r);
 214                 # FIXME: detect charset from <meta> tag: "Content-type: text/html; charset=<???>"
 215                 }
 216         elsif ($mime_type eq "application/pgp-encrypted"
 217                && (my $filename=mimehead($first)->mime_attr("Content-Disposition.filename"))
 218                ) {
 219                 # first part contains just "Version: 1" as of GnuPG v1.0.4 (GNU/Linux)
 220                 $r="pgp($filename)";
 221                 }
 222         if ((my $charset=mimehead($first)->mime_attr("Content-Type.charset"))) {
 223                 my $cstocs=Cz::Cstocs->new($charset,"ascii");
 224                 $r=&$cstocs($r) if $cstocs;     # charset may be unknown
 225                 }
 226         return $r;
 227 }
 228
 229 sub parts_linear
 230 {
 231 my($part)=@_;
 232
 233         return $Audit if !$part && !$Audit->is_mime();
 234         $part||=$Audit;
 235         # don't use '!$part->parts()' as even 0-parts-multiparts are still multiparts
 236         return $part if $part->bodyhandle();
 237         return map { (parts_linear($_)); } $part->parts();
 238 }
 239
 240 sub smsbuild
 241 {
 242 my($smsi,$smscount)=@_;
 243
 244         return "$smsi/$smscount:" if $smscount>1;
 245         return "";
 246 }
 247
 248 # FIXME: rewrite &send_cz_eurotel properly by own code
 249 # patch for http://kiwi.ms.mff.cuni.cz/%7Etom/programming/src/sendsms.tar.gz/sendsms.pl
 250 my $agent=LWP::UserAgent->new();
 251 $agent->agent("LaceMail $VERSION; contact=$SMScontact; ");
 252 my($request1,$response1);       # for &send_cz_eurotel
 253 my($name,$value,$type,$disabled,$q2);
 254
 255 # &send_cz_eurotel returns: error
 256 # BEGIN http://kiwi.ms.mff.cuni.cz/%7Etom/programming/src/sendsms.tar.gz/sendsms.pl
 257 sub parse_inputs
 258 {
 259         my ($resp) = @_;
 260         my @inputs;
 261         my $ct;
 262         my @c;
 263         $ct=$resp->content();
 264
 265         @c=split '>', $ct;
 266         grep {
 267            if (/(<input|<select|<textarea)([^<>]*)(>|$)/i) {
 268              my $txt=$2, $name="", $value="", $type="x", $disabled=0;
 269              my $ipoc;
 270              if ($txt =~ /type="([^"]*)"/i) { $type=$1; }
 271              elsif ($txt =~ /type=([^" ]*)[ >]/i) { $type=$1; }
 272              if ($txt =~ /name="([^"]*)"/i) { $name=$1; }
 273              elsif ($txt =~ /name=([^" ]*)[ >]/i) { $name=$1; }
 274              if ($txt =~ /value="([^"]*)"/i) { $value=$1; }
 275              elsif ($txt =~ /value=([^" ]*)[ >]/i) { $value=$1; }
 276              if ($txt =~ /disabled/i) { $disabled=1; }
 277              if ($name ne "" && $type ne "" && $type ne "button" && ! $disabled)
 278              {
 279                $ipoc=$#inputs;
 280                $inputs[$ipoc+1][0]=$name;
 281                $inputs[$ipoc+1][1]=$value;
 282              }
 283            }
 284         0; } @c;
 285         return @inputs;
 286 }
 287
 288 sub make_query
 289 {
 290         my (@inputs) = @_;
 291
 292         my $i;
 293         my $query = "";
 294
 295         for ($i=0; $i<=$#inputs; $i++)
 296         {
 297           my($q1, $q2);
 298           if ($i>0) { $query="$query&"; }
 299           $q1=uri_escape($inputs[$i][0]);
 300           $q2=uri_escape($inputs[$i][1]);
 301           $query="$query$q1=$q2";
 302         }
 303
 304         #change @ and space back
 305         $query=~ s/%20/+/g;
 306         $query=~ s/%40/@/g;
 307         return $query;
 308 }
 309
 310 sub send_cz_eurotel
 311 {
 312         my ($id,$text,$mail,$directd) = @_;
 313         my $src_url = "http://www2.eurotel.cz/sms/index.html";
 314         my @inputs;
 315         my $query = "";
 316         my $cookie = HTTP::Cookies->new;
 317         my $pref;
 318
 319         #check if correct number
 320         if (substr($id,0,5)!="00420") { return -1; }
 321         $pref=substr($id,5,3);
 322         if (!($pref eq "601" || $pref eq "602" || $pref eq "606" || $pref eq "607"  || ($pref ge "720" && $pref le "729"))) { return -1; }
 323
 324         #get form page, extract cookies
 325         $request1=new HTTP::Request('GET', "$src_url?n_pagestyle=new");
 326         $response1=$agent->request($request1);
 327         if ($response1->code != 200) { return -3; }
 328         $cookie->extract_cookies($response1);
 329
 330         #parse the form
 331         @inputs=parse_inputs($response1);
 332
 333         #fill the form
 334         $inputs[2][1]=substr($id,5,3);
 335         $inputs[3][1]=substr($id,8,6);
 336         $inputs[4][1]=$mail;
 337
 338         #direct display
 339         $inputs[6][1]="sms";
 340         $inputs[6][1]="show" if ($directd>0);
 341
 342         $inputs[7][1]=$text;
 343
 344 #       for ($i=0; $i<=$#inputs; $i++) { print "[$i] $inputs[$i][0] $inputs[$i][1]\n"; }
 345
 346         #make query
 347         $query=make_query(@inputs);
 348
 349         #POST the form
 350         my $header = new HTTP::Headers(
 351                 'Content-Length' => length($query),
 352                 'Content-Type' => 'application/x-www-form-urlencoded',
 353                 'Accept' => '*/*',
 354                 'Referer' => $src_url
 355         );
 356         my $request2 = new HTTP::Request('POST',$src_url, $header, $query);
 357         $cookie->add_cookie_header($request2);
 358         my $response2 = $agent->request($request2);
 359
 360         if ($response2->code != 200) { return -3; }
 361
 362         #check for success
 363         if ($response2->content() !~ /byla.*odesl.*na na SMS centrum/)
 364         {
 365           return -2;
 366         }
 367         return 0;
 368 }
 369 # END http://kiwi.ms.mff.cuni.cz/%7Etom/programming/src/sendsms.tar.gz/sendsms.pl
 370
 371 sub smslens
 372 {
 373 my($ignorenewmail,$smscount,%args)=@_;
 374
 375         return map({
 376                         my $l=160;
 377                         if (!$ignorenewmail) {  # send by mail
 378                                 $l-=length("Z emailu $SMSmailError: ");
 379                                 $l-=length(smsbuild($_,$smscount));
 380                                 }
 381                         else {  # send by web
 382                                 $l-=length("Z WWW x/5: ");
 383                                 $l-=length(smsbuild($_,POSIX::ceil($smscount/5)));
 384                                 }
 385                         $l;
 386                         } (0..$smscount-1));
 387 }
 388
 389 sub smssend_web
 390 {
 391 my($squeezed,$smscount,@lens)=@_;
 392
 393         $smscount=POSIX::ceil($smscount/5);
 394         for my $smsi (0..$smscount-1) {
 395                 my $len=$lens[$smsi];
 396                 $squeezed=~/^.{0,$len}/s;
 397                 my $frag=$&;
 398                 $squeezed=$';
 399                 return 0 if send_cz_eurotel($SMSwebRcpt,$frag,"",0);
 400                 }
 401         return 1;
 402 }
 403
 404 sub smssend_mail
 405 {
 406 my($squeezed,$smscount,@lens)=@_;
 407
 408         my $recalclen=0;
 409         for ($smscount=0;$recalclen<length $squeezed;$smscount++) {
 410                 $recalclen+=$lens[$smscount];
 411                 }
 412         for my $smsi (0..$smscount-1) {
 413                 my $len=$lens[$smsi];
 414                 $squeezed=~/^.{0,$len}/s;
 415                 my $frag=$&;
 416                 $squeezed=$';
 417                 my $mail=Mail::Mailer->new("sendmail","-f","$SMSmailError");
 418                 $mail->open({
 419                                 "To"=>$SMSmailRcpt,
 420                                 "From"=>$SMSmailError,  # no longer displayed anyway
 421                                 "X-LaceMail-Version"=>$VERSION,
 422                                 "X-LaceMail-Contact"=>$SMScontact,
 423                                 });
 424                 print $mail smsbuild($smsi,$smscount).$frag."\n";
 425                 # FIXME: check errors
 426                 $mail->close();
 427                 }
 428         return 1;
 429 }
 430
 431 sub smssend
 432 {
 433 my($ignorenewmail,$smscount,%args)=@_;
 434
 435         my $text=audit_sms(
 436                         "subject"=>unmime($Audit->subject()),
 437                         "from"=>[ Mail::Address->parse(unmime($Audit->from())) ],
 438                         "body"=>substr(body_simple(),0,$MaxBodySMS*(1+0.25*$smscount)),
 439                         %args);
 440         my $texthead="";
 441         ($texthead,$text)=@$text if ref $text;
 442         do { print "$texthead\n$text\n"; return; } if $opt_smstest;
 443         my @lens=smslens($ignorenewmail,$smscount,%args);
 444         my $maxlen=0;
 445         $maxlen+=$_ for (@lens);
 446         my $squeezed;
 447         for my $squeeze (@sms_squeezes) {
 448                 local $_;
 449                  Lingua::EN::Squeeze::SqueezeControl($_)    if defined ($_=$squeeze->{"SqueezeControl"});
 450                 $Lingua::EN::Squeeze::SQZ_OPTIMIZE_LEVEL or 1;  # prevent: Name "$_" used only once: possible typo
 451                 $Lingua::EN::Squeeze::SQZ_OPTIMIZE_LEVEL=$_ if defined ($_=$squeeze->{"SQZ_OPTIMIZE_LEVEL"});
 452                 $squeezed=Lingua::EN::Squeeze::SqueezeText($text);
 453                 chomp $squeezed;
 454                 last if $maxlen>=length($texthead.$squeezed);
 455                 }
 456         $squeezed=substr $texthead.$squeezed,0,$maxlen; # strip if we passed thru last for() above
 457         my $recalclen=0;
 458         for ($smscount=0;$recalclen<length $squeezed;$smscount++) {
 459                 $recalclen+=$lens[$smscount];
 460                 }
 461         my $func=($ignorenewmail ? \&smssend_web : \&smssend_mail);
 462         &$func($squeezed,$smscount,@lens);
 463 }
 464
 465 sub smssend_tryall
 466 {
 467 my($ignorenewmail,@args)=@_;
 468
 469         return if !$opt_smstest && !$opt_idle && defined useridle();
 470         local $_;
 471         return $_ if                     $_=smssend(1,@args);   # web
 472         return $_ if !$ignorenewmail && ($_=smssend(0,@args));  # mail
 473         warn "Unable to SMSsend the mail";
 474         return 0;
 475 }
 476
 477 sub cut
 478 {
 479         local $_=$_[0];
 480         return "<???>" if !defined($_) || /^\s*$/s;
 481         s/^\s*//s;
 482         s/\s*$//s;
 483         return $_ if length($_)<128;
 484         return substr($_,0,128)."...";
 485 }
 486
 487 our $profile_eval_depth=0;
 488 # ($name || @$name)
 489 sub profile_eval
 490 {
 491 my($name)=@_;
 492
 493         die "Nesting profile: $name" if 0x10<=(local $profile_eval_depth=$profile_eval_depth+1);
 494         return @$name if ref $name;
 495         die "Profile not found: $name" if !exists $audit_profile{$name};
 496         my @this=@{$audit_profile{$name}};
 497         return (profile_eval($'),@this[1..$#this]) if $this[0] && $this[0]=~/^=/;
 498         return @this;
 499 }
 500
 501 sub address_show
 502 {
 503 my($text)=@_;
 504
 505         return join(",",map({ $_->name() or $_->address(); } Mail::Address->parse($text)));
 506 }
 507
 508 sub unmime
 509 {
 510 my($text)=@_;
 511
 512         return join "",map({
 513                         my $cstocs;
 514                         for (${$_}[1],"iso-8859-2") {
 515                                 last if $_ && ($cstocs=Cz::Cstocs->new($_,"ascii"));
 516                                 }
 517                         &$cstocs(${$_}[0]);
 518                         } MIME::Words::decode_mimewords($text));
 519 }
 520
 521 # $folder: "$folder; comment"
 522 # $profile as profile_eval($name)
 523 sub store
 524 {
 525 my($folder,$profile,%args)=@_;
 526
 527         $profile=$store_profile if !$profile;
 528         my %do=map({ (!/=/ ? ($_=>1) : ($`=>$')); } profile_eval($profile));
 529         Sys::Syslog::syslog("info","%s%s%s: %s: %s",
 530                                         (!$opt_dry ? "" : "--dry: "),
 531                                         (!$store_ignore ? "" : "IGNORED[$store_ignore]: "),
 532                                         map({ cut($_); } $folder,address_show(unmime($Audit->from())),unmime($Audit->subject())),
 533                                         )
 534                         if $do{"syslog"} || $opt_dry;
 535         $folder=~s/;.*$//s;
 536         $folder="$Mail/".$' if $folder=~/^=/;
 537         push @AuditStored,$folder if $do{"did"};
 538         return if $store_ignore || $opt_dry;
 539         $DoBell++ if $do{"bell"};
 540         write_message($folder);
 541         smssend_tryall $store_ignorenewmail,$do{"sms"},%args if $do{"sms"};
 542 }
 543
 544 our $did_last=0;
 545
 546 # no &$funcref=>did smth in this block
 547 # &$funcref,@funcargs
 548 sub did
 549 {
 550 my($funcref,@funcargs)=@_;
 551
 552         return @AuditStored!=$did_last if !$funcref;
 553         local $did_last=@AuditStored;
 554         &$funcref(@funcargs);
 555         return @AuditStored!=$did_last;
 556 }
 557
 558 # Never use Mail::Audit->store() as it will reformat MIME bodies and possibly corrupt OpenPGP!
 559 sub write_message
 560 {
 561 my($folder)=@_;
 562
 563         return if $opt_dry;
 564         local *F;
 565         open F,">>$folder" or do { warn "Append \"$folder\": $!"; return 0; };
 566         {
 567                 local $_;
 568                 ($_=Mail::Audit::audit_get_lock(\*F,$folder)) and do { warn "Lock \"$folder\": $!"; last; };
 569                 seek F,0,IO::Handle::SEEK_END or do { warn "Seek-end \"$folder\": $!"; last; };
 570                 # FIXME: Check for '^From ' to not to rely on our network peer
 571                 print F $Message or do { warn "Write to \"$folder\": $!"; last; };
 572                 do { print F "\n"; warn "Missing trailing newline, fixed"; } if $Message!~/\n$/s;
 573                 close F or do { warn "Close \"$folder\""; last; };
 574                 return 1;       # OK
 575                 }
 576         warn "MAIL DROPPED for folder: $folder";
 577         close F;
 578         return 0;       # failed
 579 }
 580
 581 sub process
 582 {
 583 my($message)=@_;
 584
 585         local $_=$_;
 586         my $save_=$_;
 587         local $Message=$message;
 588         local $Audit=Mail::Audit->new(
 589                         "emergency"=>"$Mail/emergency",
 590                         "data"=>[map("$_\n",split("\n",$message))],
 591                         "log"=>"$HOME/.lacemail.log",
 592                         "loglevel"=>99,
 593                         );
 594         local @AuditStored=();
 595         do { smssend 0,$opt_smstest; return; } if $opt_smstest;
 596         write_message("$Mail/input");
 597         audit();
 598         warn 'Corrupted $_, repaired' if defined($save_)!=defined($_) || (defined($_) && $save_ ne $_);
 599 }
 600
 601 # utility functions:
 602
 603 # return: true (error-message or "1") if is spam
 604 sub razor2
 605 {
 606         # razor-check has exit code 1 if NOT spam, code 0 if IS spam
 607         local *CHILD;
 608         local $SIG{"PIPE"}=sub { warn "razor2 gave me SIGPIPE: broken pipe"; };
 609         # prevent Razor2's: Can't call method "log" on unblessed reference at Razor2/Client/Agent.pm line 212.
 610         local $ENV{"HOME"}=$HOME;
 611         open CHILD,'|'
 612                                         .'('.'(razor-check 2>&1;echo >&3 $?)'
 613                                                         .'|sed "s/^/razor-check: /"'
 614                                                         .'|logger -t "lacemail['.$$.']" -p mail.crit'
 615                                                         .') 3>&1'
 616                                         .'|exit `cat`'
 617                         or return 0;
 618         print CHILD $Message;
 619         my $return;
 620         {
 621                 local $/=undef();
 622                 $return=<CHILD> || 1;
 623                 }
 624         close CHILD;
 625         return undef() if !WIFEXITED($?);
 626         return undef() if  WIFSIGNALED($?);
 627         return undef() if  WIFSTOPPED($?);
 628         return undef() if WEXITSTATUS($?);
 629         return $return; # is-spam
 630 }
 631
 632 # NOTE: returns undef() if !wantarray and the first header is unrecognized
 633 # Returns also hosts
 634 sub Received_for
 635 {
 636         my @r=();
 637         for my $hdr ($Audit->head->get("Received")) {
 638                 my($for)=($hdr=~/\bfor\s+\<?(\S+)\>?\b/);
 639                 return $for if !wantarray();
 640                 push @r,$for if $for;
 641                 my($from,$fromaddr)=($hdr=~/\bfrom\s+(?:(\S+)\b.*?)??\[((?:\d{1,3}\.){3}\d{1,3})\]/);
 642                 $from=$fromaddr if !defined $from;
 643                 push @r,"$from:$fromaddr" if $from;
 644                 }
 645         return @r;
 646 }
 647
 648 # Extended Mail::Audit::MAPS
 649 # $domain,$full,[$timeout]
 650 sub dnsbl
 651 {
 652 my($domain,$full,$timeout)=@_;
 653
 654         $timeout||=30;  # sec
 655         $Mail::Audit::MAPS::host=$domain;
 656         my @hosts=map({ s/^.*://; "[$_]"; }     # strip DNS part
 657                         grep({ /^([^:@]*):/ && !$alternates_host{$1}; } (Received_for()))       # leave only foreign hosts
 658                         );
 659         splice @hosts,1 if !$full && @hosts;    # "&& @hosts" to prevent: WARN: splice() offset past end of array
 660         {
 661                 package My::Audit::Faked;
 662                 sub received { return @{$_[0]->{"received"}}; }
 663                 }
 664         my $self_faked={
 665                         "received"=>[@hosts],
 666                         };
 667         bless $self_faked,"My::Audit::Faked";
 668         return Mail::Audit::rblcheck($self_faked,$timeout);
 669 }
 670
 671 our %muttrc_pending=();
 672 sub muttrc
 673 {
 674 my($muttrc)=@_;
 675
 676         $muttrc||="$HOME/.muttrc";
 677         $muttrc=~s/^\~/$HOME/;
 678         do { warn "Looping muttrc, ignoring: $muttrc"; return (); } if $muttrc_pending{$muttrc};
 679         local $muttrc_pending{$muttrc}=1;
 680         local *MUTTRC;
 681         open MUTTRC,$muttrc or do { warn "open \"$muttrc\": $!"; return (); };
 682         local $/="\n";
 683         local $_;
 684         my @r=();
 685         # far emulation mutt/init.c/mutt_parse_rc_line()
 686         while (<MUTTRC>) {
 687                 s/^[\s;]*//s;
 688                 s/[#;].*$//s;
 689                 s/\s*$//s;
 690                 next if !/^(\S+)\s*/s;
 691                 if ($1 eq "source") {
 692                         $_=$';
 693                         do { warn "Wrong 'source' parameters at $muttrc:$.: $_"; next; } if !/^\S+$/;
 694                         push @r,muttrc($_);
 695                         next;
 696                         }
 697                 push @r,$_;
 698                 }
 699         close MUTTRC or warn "close \"$muttrc\": $!";
 700         return wantarray() ? @r : join("",map("$_\n",@r));
 701 }
 702
 703 my %mutteval_charmap=(          # WARNING: Don't use "" or "0" here, see below for "|| warn"!
 704                 '\\'=>"\\",
 705                 'r'=>"\r",
 706                 'n'=>"\n",
 707                 't'=>"\t",
 708                 'f'=>"\f",
 709                 'e'=>"\e",
 710                 );
 711 # mutt/init.c/mutt_extract_token()
 712 sub mutteval
 713 {
 714         local $_=$_[0];
 715         return $_ if !s/^"//;
 716         do { warn "Missing trailing quote in: $_"; return $_; } if !s/"$//;
 717         s/\\(.)/$mutteval_charmap{$1} || warn "Undefined '\\$1' sequence in: $_";/ges;
 718         return $_;
 719 }
 720
 721 sub muttrc_get
 722 {
 723 my(@headers)=@_;
 724
 725         my @r=map({ (ref $_ ? $_ : qr/^\s*set\s+\Q$_\E\s*=\s*(.*?)\s*$/si); } @headers);
 726         my %r=map(($_=>undef()),@r);
 727         for (muttrc()) {
 728                 for my $ritem (@r) {
 729                         /$ritem/si or next;
 730                         $r{$ritem}=mutteval $1;
 731                         }
 732                 }
 733         for my $var (grep { !defined($r{$_}) } @r) {
 734                 warn "Variable '$var' not found in muttrc";
 735                 return undef();
 736                 }
 737         return wantarray() ? %r : $r{$r[0]};
 738 }
 739
 740 sub muttrc_aliases
 741 {
 742         my %r=();
 743         for (muttrc()) {
 744                 next if !(my $key=(/^alias\s+(\S+)\s+/)[0]);
 745                 for my $addrobj (Mail::Address->parse($')) {
 746                         my $addr=$addrobj->address();
 747                         my $ref=\$r{"\L$addr"};
 748                         $$ref=$key if !$$ref;   # use always the first occurence to prefer nicks
 749                         }
 750                 }
 751         return %r;
 752 }
 753
 754 # FIXME: Unify
 755 # BEGIN lacemail-sendmail
 756 # return: Mail::Address instance or undef()
 757 sub parseone
 758 {
 759 my($line)=@_;
 760
 761         return undef() if !defined $line;
 762         my @r=Mail::Address->parse($line);
 763         warn "Got ".scalar(@r)." addresses while wanting just one; when parsing: $line" if 1!=@r;
 764         return $r[0];
 765 }
 766 # END lacemail-sendmail
 767
 768 # FIXME: host may get multiple recipients and thus not showing "for <...>"
 769 # FIXME: muttrc_get("from") is too strict
 770 sub store_muttrc_alternates
 771 {
 772 my($prefix,$profile)=@_;
 773
 774         my $alternates=muttrc_get("alternates") or return;
 775         my $alternatesre=qr/$alternates/si;
 776         my $From=muttrc_get("from") or return;
 777         my $Fromre=qr/^\Q$From\E$/si;
 778         my $Fromobj=parseone $From or return;
 779         warn "'From' \"$From\" not matched by 'alternates': $alternatesre"
 780                         if $From!~/$alternates/si;
 781         for my $for (reverse Received_for()) {
 782                 $for=~s/:.*$//; # strip IP address here
 783                 if ($Fromobj->user() ne "prog-mutt") {
 784                         next if lc($for) eq lc($From);
 785                         }
 786                 else {
 787                         my $forobj=parseone $for;
 788                         if ($forobj && $forobj->host()) {
 789                                 # it is 'for' our primary address
 790                                 next if lc($forobj->host()) eq lc($Fromobj->host());    # or 'return'? shouldn't matter
 791                                 }
 792                         }
 793                 next if !$alternates_host{lc $for} && $for!~/$alternatesre/si;
 794                 store "$prefix\L$for",($profile || []);
 795                 return;
 796                 }
 797 }
 798
 799 # $header: ref CODE
 800 # $header: !ref => $Audit->get($header)
 801 # $maybeaddress: qr/regex/i
 802 # $maybeaddress: "string"
 803 # $maybeaddress: "<Regexp:regex>"       # hack :-(
 804 # $maybeaddress: "<user@host>"
 805 # $maybeaddress: "<user@>"
 806 # $maybeaddress: "<@host>"
 807 sub _headercore
 808 {
 809 my($re,$justone,$header,$maybeaddress)=@_;
 810
 811         if (ref $header) {
 812                 $header=join(",",&$header());
 813                 }
 814         else {
 815                 $header=$Audit->get($header);
 816                 }
 817         return 0 if !$header;
 818         return $header=~/$maybeaddress/i if "Regexp" eq ref $maybeaddress;
 819         return $header=~/$re/i if !defined(my $want=($maybeaddress=~/^\<(.*)\>$/)[0]);
 820         my @parsed=Mail::Address->parse($header);
 821         warn "'mailto:' forbidden in pattern: $want" if $want=~/^\Qmailto:\E/;
 822         return 0 if $justone && 1!=@parsed;
 823         return grep {
 824                            if ($want=~/^Regexp:/)
 825                                 { $_->address()=~/$'/i; }
 826                         elsif ($want=~/\@$/)
 827                                 { $_->user()   =~/^(?:\Qmailto:\E)?\Q$`\E/i; }
 828                         elsif ($want=~/^\@/)
 829                                 { $_->host()   =~/^\Q$'\E/i; }
 830                         else
 831                                 { $_->address()=~/^(?:\Qmailto:\E)?\Q$want\E/i; }
 832                         } @parsed;
 833 }
 834
 835 sub headerhas
 836 {
 837 my($header,$substr)=@_;
 838
 839         return _headercore(qr/\Q$substr\E/i,0,$header,$substr);
 840 }
 841
 842 sub headeris
 843 {
 844 my($header,$string)=@_;
 845
 846         return _headercore(qr/\Q$string\E/i,1,$header,$string);
 847 }
 848
 849 # $header,%$map
 850 sub header_remap
 851 {
 852 my($header,$map)=@_;
 853
 854         my $text=$Audit->get($header);
 855         my $orig=$text;
 856         while (my($from,$to)=each(%$map)) {
 857                 $text=~s/\b\Q$from\E\b/$to/gsi;
 858                 }
 859         return if $text eq $orig;
 860         $Audit->put_header("X-LaceMail-header_remap-$header",$orig);
 861         $Audit->replace_header($header,$text);
 862 }
 863
 864
 865 # MAIN
 866
 867 my $basedir=File::Basename::dirname($0);
 868 $Getopt::Long::ignorecase=0;
 869 die "GetOptions error" if !Getopt::Long::GetOptions(
 870                   "inetd"    ,sub { $opt_mode=\&inetd; },
 871                   "stdin"    ,sub { $opt_mode=\&stdin; },
 872                   "dry"      ,\$opt_dry,
 873                   "smstest:s",sub { $opt_mode=\&stdin; $opt_smstest=($_[1] || 1); },
 874                   "idle!"    ,\$opt_idle,
 875                   "idletest" ,sub { syslogging_restore(); print((defined($_=useridle()) ? $_ : "<undef>")."\n"); exit 0; },
 876                   "muttrc"   ,sub { syslogging_restore(); print scalar muttrc(); exit 0; },
 877                 "d|basedir=s",\&basedir,
 878                 );
 879 # "Excessive arguments" checked in &inetd
 880 die "Missing mode" if !$opt_mode;
 881
 882 my $filenameMyAudit="$basedir/My-Audit.pm";
 883 open AUDIT,$filenameMyAudit or die "open \"$filenameMyAudit\": $!";
 884 {
 885         local $/=undef();
 886         eval <AUDIT> or die "eval \"$filenameMyAudit\": $@";
 887         audit_init();
 888         %alternates_host=map((lc($_)=>1),@alternates_host);
 889         }
 890 close AUDIT or warn "close \"$filenameMyAudit\": $!";
 891
 892 &$opt_mode();
 893 die "NOTREACHED";