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