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