6 $VERSION=do { my @r=(q$Revision$=~/\d+/g); sprintf "%d.".("%03d"x$#r),@r; };
13 Sys::Syslog::openlog("lacemail","pid","mail");
15 sub syslogging_on_save
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]); };
22 sub syslogging_restore
24 $SIG{"__DIE__" }=pop @syslogging_stack;
25 $SIG{"__WARN__"}=pop @syslogging_stack;
30 use Mail::Audit qw(MAPS);
32 use Carp qw(cluck confess);
33 use POSIX qw(WIFEXITED WEXITSTATUS WIFSIGNALED WTERMSIG WIFSTOPPED WSTOPSIG);
34 require POSIX; # for ceil
36 require File::Basename;
38 require Mail::Address;
41 require HTML::Entities;
43 require Lingua::EN::Squeeze;
45 require HTTP::Cookies;
46 require HTTP::Request;
47 require LWP::UserAgent;
48 use URI::Escape 'uri_escape';
52 my $HOME="/home/lace";
53 my $Mail="$HOME/Mail";
54 my @ValidUsers=qw(root lace short kratochvil _local);
56 my $MaxBodySMS=0x1000; # max bytes to pass to Lingua::EN::Squeeze
57 my $SMSmailError='short+err@ucw.cz';
58 my @SMSwebRcpt=qw(420 602 431329);
59 my $SMSwebRcpt_username="lace2";
60 my $SMScontact='<short@ucw.cz>';
62 our($Message,$Audit,@AuditStored,$store_ignore,$store_ignorenewmail,$store_profile,$DoBell);
63 our(%audit_profile,@sms_squeezes,@alternates_host,@dnsbl_whitelist); # imported
64 my %alternates_host; # from @alternates_host
65 my %dnsbl_whitelist; # from @dnsbl_whitelist
67 # from RedHat "procmail-3.22-5"
68 # /i should be only $procmailFROM_DAEMON but how it can hurt to /i all?
69 our $procmailTO_ =qr'^((Original-)?(Resent-)?(To|Cc|Bcc)|(X-Envelope|Apparently(-Resent)?)-To):(.*[^-a-zA-Z0-9_.])?'mio;
70 our $procmailTO =qr'^((Original-)?(Resent-)?(To|Cc|Bcc)|(X-Envelope|Apparently(-Resent)?)-To):(.*[^a-zA-Z])?'mio;
71 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;
72 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;
73 # perl-5.8.0 does not cope w/original FROM_MAILER on the third '?' character
74 # Thus we did '([^>]*[^(.%@a-z0-9])?' -> '[^>]*\b', I hope it is somehow similiar
75 # 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;
78 my $opt_smstest; # 1 or $smscount
87 syslogging_restore(); # This is more a debugging session
92 die "Invalid 'From ' line: $_" if $message eq "" && !/^From /;
93 if (/^From / && $message) {
99 process $message if $message;
103 # FIXME: separate 'lacemail'-transfer together with lacemail-submit away
106 die "Excessive arguments" if @ARGV;
108 IO::Handle::autoflush STDOUT 1;
113 confess "Unexpected EOF" if !defined $length;
114 confess "Missing EOL" if $length!~s/\n$//s;
115 exit 0 if $length eq "BYE";
116 confess "Unrecognized length: $length" if $length!~/^\d+$/;
119 $length==($_=read STDIN,$message,$length) or confess "Got $_ out of required $length bytes";
120 $length==length $message or confess "False read return ".length($message)." instead of $length";
127 bell() or warn "Unable to BELL";
138 open BELL,">/dev/tty11" or return 0;
140 close BELL or return 0;
146 return 0 if ! -e "$HOME/away";
147 my %valid_users=map(($_=>1),@ValidUsers);
148 my($idlebest,$linebest);
149 for my $utmp (User::Utmp::getut(),{ "ut_line"=>"psaux" }) {
151 next if defined($_=$utmp->{"ut_type"}) && $_!=User::Utmp::USER_PROCESS;
152 next if defined($_=$utmp->{"ut_user"}) && !$valid_users{$_};
153 my $line="/dev/".$utmp->{"ut_line"};
154 my $atime=(stat $line)[8];
155 my $what="user \"".($utmp->{"ut_user"} || "<local>")."\", line \"$line\"";
156 warn "Unable to stat $what" and next if !$atime;
157 my $idle=time()-$atime;
158 warn "atime in future for $what" and next if $idle<0;
159 next if $idle>$IdleMax;
160 next if defined $idlebest && $idlebest<=$idle;
164 return !wantarray() ? $idlebest : ($idlebest,$linebest);
167 # return only the very (recursive) first part
170 return $Audit if !$Audit->is_mime();
173 $first=$_ while $_=$first->parts(0);
181 return $Audit->is_mime() ? $part->head()
182 : MIME::Head->new([ split "\n",$Audit->head()->as_string() ])
190 # be vary cautious here as most of $part methods will encode it!
191 return join "",@{$Audit->body()} if !$Audit->is_mime();
192 my $bodyhandle=$part->bodyhandle();
193 # If MIME is corrupted we don't get bodyhandle() for this part
194 # It may occur when "boundary" is specified by header but no such boundary is found in the body
195 return $bodyhandle->as_string() if $bodyhandle;
196 warn "MIME corrupted, adapting";
197 return $part->body_as_string();
204 return $Audit->is_mime() ? $part->effective_type() : mimehead($part)->mime_type();
209 my $first=body_first();
210 my $r=mimebody($first);
211 my $mime_type=mime_type($first);
212 if ($mime_type eq "text/html") {
213 # HTML::FormatText just does a useless text layouts
214 # PerlIO::via::StripHTML probably needs PerlIO input (?)
216 $r=HTML::Entities::decode($r);
217 # FIXME: detect charset from <meta> tag: "Content-type: text/html; charset=<???>"
219 elsif ($mime_type eq "application/pgp-encrypted"
220 && (my $filename=mimehead($first)->mime_attr("Content-Disposition.filename"))
222 # first part contains just "Version: 1" as of GnuPG v1.0.4 (GNU/Linux)
225 if ((my $charset=mimehead($first)->mime_attr("Content-Type.charset"))) {
226 my $cstocs=Cz::Cstocs->new($charset,"ascii");
227 $r=&$cstocs($r) if $cstocs; # charset may be unknown
236 return $Audit if !$part && !$Audit->is_mime();
238 # don't use '!$part->parts()' as even 0-parts-multiparts are still multiparts
239 return $part if $part->bodyhandle();
240 return map { (parts_linear($_)); } $part->parts();
245 my($smsi,$smscount)=@_;
247 return "$smsi/$smscount:" if $smscount>1;
253 my($ignorenewmail,$smscount,%args)=@_;
257 if (!$ignorenewmail) { # send by mail
258 $l-=length("Z emailu $SMSmailError: ");
259 $l-=length(smsbuild($_,$smscount));
262 $l-=6; # 154 is the max length before split; why?
270 my($squeezed,$smscount,@lens)=@_;
272 $smscount=POSIX::ceil($smscount/5);
273 for my $smsi (0..$smscount-1) {
274 my $len=$lens[$smsi];
275 $squeezed=~/^.{0,$len}/s;
278 return 0 if 3!=@SMSwebRcpt;
280 open F,"$HOME/priv/WWW-SMS-$SMSwebRcpt_username.pwd" or return 0;
284 my $sms=WWW::SMS->new(@SMSwebRcpt,$frag,"username"=>$SMSwebRcpt_username,"passwd"=>$pwd);
285 for ($sms->gateways("sorted"=>"reliability")) {
286 last if $sms->send($_);
287 Sys::Syslog::syslog("warning","Web SMS send failed: %s",$WWW::SMS::Error);
288 my $void=$WWW::SMS::Error; # Prevent: Name "WWW::SMS::Error" used only once
296 my($squeezed,$smscount,@lens)=@_;
303 my($ignorenewmail,$smscount,%args)=@_;
306 "subject"=>unmime($Audit->subject()),
307 "from"=>[ Mail::Address->parse(unmime($Audit->from())) ],
308 "body"=>substr(body_simple(),0,$MaxBodySMS*(1+0.25*$smscount)),
311 ($texthead,$text)=@$text if ref $text;
312 do { print "$texthead\n$text\n"; return; } if $opt_smstest;
313 my @lens=smslens($ignorenewmail,$smscount,%args);
315 $maxlen+=$_ for (@lens);
317 for my $squeeze (@sms_squeezes) {
319 Lingua::EN::Squeeze::SqueezeControl($_) if defined ($_=$squeeze->{"SqueezeControl"});
320 $Lingua::EN::Squeeze::SQZ_OPTIMIZE_LEVEL or 1; # prevent: Name "$_" used only once: possible typo
321 $Lingua::EN::Squeeze::SQZ_OPTIMIZE_LEVEL=$_ if defined ($_=$squeeze->{"SQZ_OPTIMIZE_LEVEL"});
322 $squeezed=Lingua::EN::Squeeze::SqueezeText($text);
324 last if $maxlen>=length($texthead.$squeezed);
326 $squeezed=substr $texthead.$squeezed,0,$maxlen; # strip if we passed thru last for() above
328 for ($smscount=0;$recalclen<length $squeezed;$smscount++) {
329 $recalclen+=$lens[$smscount];
331 my $func=($ignorenewmail ? \&smssend_web : \&smssend_mail);
332 &$func($squeezed,$smscount,@lens);
337 my($ignorenewmail,@args)=@_;
339 return if !$opt_smstest && !$opt_idle && defined useridle();
341 return $_ if $_=smssend(1,@args); # web
342 return $_ if !$ignorenewmail && ($_=smssend(0,@args)); # mail
343 warn "Unable to SMSsend the mail";
350 return "<???>" if !defined($_) || /^\s*$/s;
353 return $_ if length($_)<128;
354 return substr($_,0,128)."...";
357 our $profile_eval_depth=0;
363 die "Nesting profile: $name" if 0x10<=(local $profile_eval_depth=$profile_eval_depth+1);
364 return @$name if ref $name;
365 die "Profile not found: $name" if !exists $audit_profile{$name};
366 my @this=@{$audit_profile{$name}};
367 return (profile_eval($'),@this[1..$#this]) if $this[0] && $this[0]=~/^=/;
375 return join(",",map({ $_->name() or $_->address(); } Mail::Address->parse($text)));
384 for (${$_}[1],"iso-8859-2") {
385 last if $_ && ($cstocs=Cz::Cstocs->new($_,"ascii"));
388 } MIME::Words::decode_mimewords($text));
391 # $folder: "$folder; comment"
392 # $profile as profile_eval($name)
395 my($folder,$profile,%args)=@_;
397 $profile=$store_profile if !$profile;
398 my %do=map({ (!/=/ ? ($_=>1) : ($`=>$')); } profile_eval($profile));
399 Sys::Syslog::syslog("info","%s%s%s: %s: %s",
400 (!$opt_dry ? "" : "--dry: "),
401 (!$store_ignore ? "" : "IGNORED[$store_ignore]: "),
402 map({ cut($_); } $folder,address_show(unmime($Audit->from())),unmime($Audit->subject())),
404 if $do{"syslog"} || $opt_dry;
406 $folder="$Mail/".$' if $folder=~/^=/;
407 push @AuditStored,$folder if $do{"did"};
408 return if $store_ignore || $opt_dry;
409 $DoBell++ if $do{"bell"};
410 write_message($folder) or die;
411 smssend_tryall $store_ignorenewmail,$do{"sms"},%args if $do{"sms"};
416 # no &$funcref=>did smth in this block
417 # &$funcref,@funcargs
420 my($funcref,@funcargs)=@_;
422 return @AuditStored!=$did_last if !$funcref;
423 local $did_last=@AuditStored;
424 &$funcref(@funcargs);
425 return @AuditStored!=$did_last;
428 # Never use Mail::Audit->store() as it will reformat MIME bodies and possibly corrupt OpenPGP!
435 open F,">>$folder" or do { warn "Append \"$folder\": $!"; return 0; };
438 ($_=Mail::Audit::audit_get_lock(\*F,$folder)) and do { warn "Lock \"$folder\": $!"; last; };
439 seek F,0,IO::Handle::SEEK_END or do { warn "Seek-end \"$folder\": $!"; last; };
440 # FIXME: Check for '^From ' to not to rely on our network peer
441 print F $Message or do { warn "Write to \"$folder\": $!"; last; };
442 do { print F "\n"; warn "Missing trailing newline, fixed"; } if $Message!~/\n$/s;
443 close F or do { warn "Close \"$folder\""; last; };
446 warn "MAIL DROPPED for folder: $folder";
457 local $Message=$message;
458 local $Audit=Mail::Audit->new(
459 "emergency"=>"$Mail/emergency",
460 "data"=>[map("$_\n",split("\n",$message))],
461 "log"=>"$HOME/.lacemail.log",
464 local @AuditStored=();
465 do { smssend 0,$opt_smstest; return; } if $opt_smstest;
466 write_message("$Mail/input") or die;
468 warn 'Corrupted $_, repaired' if defined($save_)!=defined($_) || (defined($_) && $save_ ne $_);
473 # return: true (error-message or "1") if is spam
476 # razor-check has exit code 1 if NOT spam, code 0 if IS spam
478 local $SIG{"PIPE"}=sub { warn "razor2 gave me SIGPIPE: broken pipe"; };
479 # prevent Razor2's: Can't call method "log" on unblessed reference at Razor2/Client/Agent.pm line 212.
480 local $ENV{"HOME"}=$HOME;
482 .'('.'(razor-check 2>&1;echo >&3 $?)'
483 .'|sed "s/^/razor-check: /"'
484 .'|logger -t "lacemail['.$$.']" -p mail.crit'
488 print CHILD $Message;
492 $return=<CHILD> || 1;
495 return undef() if !WIFEXITED($?);
496 return undef() if WIFSIGNALED($?);
497 return undef() if WIFSTOPPED($?);
498 return undef() if WEXITSTATUS($?);
499 return $return; # is-spam
502 # NOTE: returns undef() if !wantarray and the first header is unrecognized
507 for my $hdr ($Audit->head->get("Received")) {
508 my($for)=($hdr=~/\bfor\s+\<?(\S+)\>?\b/);
509 return $for if !wantarray();
510 push @r,$for if $for;
511 my($from,$fromaddr)=($hdr=~/\bfrom\s+(?:(\S+)\b.*?)??\[((?:\d{1,3}\.){3}\d{1,3})\]/);
512 $from=$fromaddr if !defined $from;
513 push @r,"$from:$fromaddr" if $from;
518 # Extended Mail::Audit::MAPS
519 # $domain,$full,[$timeout]
522 my($domain,$full,$timeout)=@_;
525 $Mail::Audit::MAPS::host=$domain;
526 my @hosts=map({ s/^.*://; "[$_]"; } # strip DNS part
527 grep({ /^([^:@]*):/ # $1 is DNS name, $' is IP address
528 && !$alternates_host{$1} # leave only foreign hosts
529 && !$dnsbl_whitelist{$'}; } (Received_for()))
531 splice @hosts,1 if !$full && @hosts; # "&& @hosts" to prevent: WARN: splice() offset past end of array
533 package My::Audit::Faked;
534 sub received { return @{$_[0]->{"received"}}; }
537 "received"=>[@hosts],
539 bless $self_faked,"My::Audit::Faked";
540 return Mail::Audit::rblcheck($self_faked,$timeout);
543 our %muttrc_pending=();
548 $muttrc||="$HOME/.muttrc";
549 $muttrc=~s/^\~/$HOME/;
550 do { warn "Looping muttrc, ignoring: $muttrc"; return (); } if $muttrc_pending{$muttrc};
551 local $muttrc_pending{$muttrc}=1;
553 open MUTTRC,$muttrc or do { warn "open \"$muttrc\": $!"; return (); };
557 # far emulation mutt/init.c/mutt_parse_rc_line()
562 next if !/^(\S+)\s*/s;
563 if ($1 eq "source") {
565 do { warn "Wrong 'source' parameters at $muttrc:$.: $_"; next; } if !/^\S+$/;
571 close MUTTRC or warn "close \"$muttrc\": $!";
572 return wantarray() ? @r : join("",map("$_\n",@r));
575 my %mutteval_charmap=( # WARNING: Don't use "" or "0" here, see below for "|| warn"!
583 # mutt/init.c/mutt_extract_token()
587 return $_ if !s/^"//;
588 do { warn "Missing trailing quote in: $_"; return $_; } if !s/"$//;
589 s/\\(.)/$mutteval_charmap{$1} || warn "Undefined '\\$1' sequence in: $_";/ges;
597 my @r=map({ (ref $_ ? $_ : qr/^\s*set\s+\Q$_\E\s*=\s*(.*?)\s*$/si); } @headers);
598 my %r=map(($_=>undef()),@r);
602 $r{$ritem}=mutteval $1;
605 for my $var (grep { !defined($r{$_}) } @r) {
606 warn "Variable '$var' not found in muttrc";
609 return wantarray() ? %r : $r{$r[0]};
616 next if !(my $key=(/^alias\s+(\S+)\s+/)[0]);
617 for my $addrobj (Mail::Address->parse($')) {
618 my $addr=$addrobj->address();
619 my $ref=\$r{"\L$addr"};
620 $$ref=$key if !$$ref; # use always the first occurence to prefer nicks
627 # BEGIN lacemail-sendmail
628 # return: Mail::Address instance or undef()
633 return undef() if !defined $line;
634 my @r=Mail::Address->parse($line);
635 warn "Got ".scalar(@r)." addresses while wanting just one; when parsing: $line" if 1!=@r;
638 # END lacemail-sendmail
640 # FIXME: host may get multiple recipients and thus not showing "for <...>"
641 # FIXME: muttrc_get("from") is too strict
642 sub store_muttrc_alternates
644 my($prefix,$profile)=@_;
646 my $alternates=muttrc_get("alternates") or return;
647 my $alternatesre=qr/$alternates/si;
648 my $From=muttrc_get("from") or return;
649 my $Fromre=qr/^\Q$From\E$/si;
650 my $Fromobj=parseone $From or return;
651 warn "'From' \"$From\" not matched by 'alternates': $alternatesre"
652 if $From!~/$alternates/si;
653 for my $for (reverse Received_for()) {
654 $for=~s/:.*$//; # strip IP address here
655 if ($Fromobj->user() ne "prog-mutt") {
656 next if lc($for) eq lc($From);
659 my $forobj=parseone $for;
660 if ($forobj && $forobj->host()) {
661 # it is 'for' our primary address
662 next if lc($forobj->host()) eq lc($Fromobj->host()); # or 'return'? shouldn't matter
665 next if !$alternates_host{lc $for} && $for!~/$alternatesre/si;
666 store "$prefix\L$for",($profile || []);
672 # $header: !ref => $Audit->get($header)
673 # $maybeaddress: qr/regex/i
674 # $maybeaddress: "string"
675 # $maybeaddress: "<Regexp:regex>" # hack :-(
676 # $maybeaddress: "<user@host>"
677 # $maybeaddress: "<user@>"
678 # $maybeaddress: "<@host>"
681 my($re,$justone,$header,$maybeaddress)=@_;
684 $header=join(",",&$header());
687 $header=$Audit->get($header);
689 return 0 if !$header;
690 return $header=~/$maybeaddress/i if "Regexp" eq ref $maybeaddress;
691 return $header=~/$re/i if !defined(my $want=($maybeaddress=~/^\<(.*)\>$/)[0]);
692 my @parsed=Mail::Address->parse($header);
693 warn "'mailto:' forbidden in pattern: $want" if $want=~/^\Qmailto:\E/;
694 return 0 if $justone && 1!=@parsed;
696 if ($want=~/^Regexp:/)
697 { $_->address()=~/$'/i; }
699 { $_->user() =~/^(?:\Qmailto:\E)?\Q$`\E/i; }
701 { $_->host() =~/^\Q$'\E/i; }
703 { $_->address()=~/^(?:\Qmailto:\E)?\Q$want\E/i; }
709 my($header,$substr)=@_;
711 return _headercore(qr/\Q$substr\E/i,0,$header,$substr);
716 my($header,$string)=@_;
718 return _headercore(qr/\Q$string\E/i,1,$header,$string);
726 my $text=$Audit->get($header);
728 while (my($from,$to)=each(%$map)) {
729 $text=~s/\b\Q$from\E\b/$to/gsi;
731 return if $text eq $orig;
732 $Audit->put_header("X-LaceMail-header_remap-$header",$orig);
733 $Audit->replace_header($header,$text);
739 my $basedir=File::Basename::dirname($0);
740 $Getopt::Long::ignorecase=0;
741 die "GetOptions error" if !Getopt::Long::GetOptions(
742 "inetd" ,sub { $opt_mode=\&inetd; },
743 "stdin" ,sub { $opt_mode=\&stdin; },
745 "smstest:s",sub { $opt_mode=\&stdin; $opt_smstest=($_[1] || 1); },
747 "idletest" ,sub { syslogging_restore(); print((defined($_=useridle()) ? $_ : "<undef>")."\n"); exit 0; },
748 "muttrc" ,sub { syslogging_restore(); print scalar muttrc(); exit 0; },
749 "d|basedir=s",\&basedir,
751 # "Excessive arguments" checked in &inetd
752 die "Missing mode" if !$opt_mode;
754 my $filenameMyAudit="$basedir/My-Audit.pm";
755 open AUDIT,$filenameMyAudit or die "open \"$filenameMyAudit\": $!";
758 eval <AUDIT> or die "eval \"$filenameMyAudit\": $@";
760 %alternates_host=map((lc($_)=>1),@alternates_host);
761 %dnsbl_whitelist=map(( $_ =>1),@dnsbl_whitelist);
763 close AUDIT or warn "close \"$filenameMyAudit\": $!";