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