4 # Copyright (C) 2002-2003 Jan Kratochvil <project-PerlMail@jankratochvil.net>
6 # This program is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 2 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 use vars qw($VERSION);
22 $VERSION=do { my @r=(q$Revision$=~/\d+/g); sprintf "%d.".("%03d"x$#r),@r; };
29 Sys::Syslog::openlog("perlmail","pid","mail");
31 sub syslogging_on_save
33 push @syslogging_stack,$SIG{"__WARN__"},$SIG{"__DIE__" };
34 $SIG{"__WARN__"}=sub { Sys::Syslog::syslog("warning","WARN: %s",$_[0]); }; # disabled: print STDERR $_[0];
35 $SIG{"__DIE__" }=sub { Sys::Syslog::syslog("crit" ,"DIE: %s" ,$_[0]); };
38 sub syslogging_restore
40 $SIG{"__DIE__" }=pop @syslogging_stack;
41 $SIG{"__WARN__"}=pop @syslogging_stack;
48 use lib $ENV{"PERLMAIL_BASEDIR"} || File::Basename::dirname($0);
53 use Mail::Audit qw(MAPS);
55 use Carp qw(cluck confess);
56 use POSIX qw(WIFEXITED WEXITSTATUS WIFSIGNALED WTERMSIG WIFSTOPPED WSTOPSIG);
57 require POSIX; # for ceil
60 require Mail::Address;
63 require HTML::Entities;
65 require Lingua::EN::Squeeze;
67 require HTTP::Cookies;
68 require HTTP::Request;
69 require LWP::UserAgent;
70 use URI::Escape 'uri_escape';
74 our($Message,@AuditStored,$DoBell);
75 my %alternates_host; # from @alternates_host
76 my %dnsbl_whitelist; # from @dnsbl_whitelist
78 # from RedHat "procmail-3.22-5"
79 # /i should be only $procmailFROM_DAEMON but how it can hurt to /i all?
80 our $procmailTO_ =qr'^((Original-)?(Resent-)?(To|Cc|Bcc)|(X-Envelope|Apparently(-Resent)?)-To):(.*[^-a-zA-Z0-9_.])?'mio;
81 our $procmailTO =qr'^((Original-)?(Resent-)?(To|Cc|Bcc)|(X-Envelope|Apparently(-Resent)?)-To):(.*[^a-zA-Z])?'mio;
82 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;
83 $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;
84 # perl-5.8.0 does not cope w/original FROM_MAILER on the third '?' character
85 # Thus we did '([^>]*[^(.%@a-z0-9])?' -> '[^>]*\b', I hope it is somehow similiar
86 # 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;
89 my $opt_smstest; # 1 or $smscount
99 syslogging_restore(); # This is more a debugging session
104 die "Invalid 'From ' line: $_" if $message eq "" && !/^From /;
105 if (!$opt_single && /^From / && $message) {
111 process $message if $message;
115 # FIXME: separate 'perlmail'-transfer together with perlmail-submit away
118 die "Excessive arguments" if @ARGV;
120 IO::Handle::autoflush STDOUT 1;
125 confess "Unexpected EOF" if !defined $length;
126 confess "Missing EOL" if $length!~s/\n$//s;
127 exit 0 if $length eq "BYE";
128 confess "Unrecognized length: $length" if $length!~/^\d+$/;
131 $length==($_=read STDIN,$message,$length) or confess "Got $_ out of required $length bytes";
132 $length==length $message or confess "False read return ".length($message)." instead of $length";
134 local *STDOUT; # FIXME: fd's inherited by spawned processes are not closed this way!
135 local *STDERR; # FIXME: fd's inherited by spawned processes are not closed this way!
139 bell() or warn "Unable to BELL";
150 open BELL,">/dev/tty11" or return 0;
152 close BELL or return 0;
158 return 0 if ! -e "$HOME/away";
159 my %valid_users=map(($_=>1),@ValidUsers);
160 my($idlebest,$linebest);
161 for my $utmp (User::Utmp::getut(),{ "ut_line"=>"psaux" }) {
163 next if defined($_=$utmp->{"ut_type"}) && $_!=User::Utmp::USER_PROCESS;
164 next if defined($_=$utmp->{"ut_user"}) && !$valid_users{$_};
165 my $line="/dev/".$utmp->{"ut_line"};
166 my $atime=(stat $line)[8];
167 my $what="user \"".($utmp->{"ut_user"} || "<local>")."\", line \"$line\"";
168 warn "Unable to stat $what" and next if !$atime;
169 my $idle=time()-$atime;
170 warn "atime in future for $what" and next if $idle<0;
171 next if $idle>$IdleMax;
172 next if defined $idlebest && $idlebest<=$idle;
176 return !wantarray() ? $idlebest : ($idlebest,$linebest);
179 # return only the very (recursive) first part
182 return $Audit if !$Audit->is_mime();
185 $first=$_ while $_=$first->parts(0);
193 return $Audit->is_mime() ? $part->head()
194 : MIME::Head->new([ split "\n",$Audit->head()->as_string() ])
202 # be vary cautious here as most of $part methods will encode it!
203 return join "",@{$Audit->body()} if !$Audit->is_mime();
204 my $bodyhandle=$part->bodyhandle();
205 # If MIME is corrupted we don't get bodyhandle() for this part
206 # It may occur when "boundary" is specified by header but no such boundary is found in the body
207 return $bodyhandle->as_string() if $bodyhandle;
208 warn "MIME corrupted, adapting";
209 return $part->body_as_string();
216 return $Audit->is_mime() ? $part->effective_type() : mimehead($part)->mime_type();
221 my $first=body_first();
222 my $r=mimebody($first);
223 my $mime_type=mime_type($first);
224 if ($mime_type eq "text/html") {
225 # HTML::FormatText just does a useless text layouts
226 # PerlIO::via::StripHTML probably needs PerlIO input (?)
228 $r=HTML::Entities::decode($r);
229 # FIXME: detect charset from <meta> tag: "Content-type: text/html; charset=<???>"
231 elsif ($mime_type eq "application/pgp-encrypted"
232 && (my $filename=mimehead($first)->mime_attr("Content-Disposition.filename"))
234 # first part contains just "Version: 1" as of GnuPG v1.0.4 (GNU/Linux)
237 if ((my $charset=mimehead($first)->mime_attr("Content-Type.charset"))) {
238 my $cstocs=Cz::Cstocs->new($charset,"ascii");
239 $r=&$cstocs($r) if $cstocs; # charset may be unknown
248 return $Audit if !$part && !$Audit->is_mime();
250 # don't use '!$part->parts()' as even 0-parts-multiparts are still multiparts
251 return $part if $part->bodyhandle();
252 return map { (parts_linear($_)); } $part->parts();
257 my($smsi,$smscount)=@_;
259 return "$smsi/$smscount:" if $smscount>1;
265 my($ignorenewmail,$smscount,%args)=@_;
269 if (!$ignorenewmail) { # send by mail
270 $l-=length("Z emailu FIXME SMSmailError: ");
271 $l-=length(smsbuild($_,$smscount));
274 $l-=6; # 154 is the max length before split; why?
282 my($squeezed,$smscount,@lens)=@_;
284 $smscount=POSIX::ceil($smscount/5);
285 for my $smsi (0..$smscount-1) {
286 my $len=$lens[$smsi];
287 $squeezed=~/^.{0,$len}/s;
290 return 0 if 3!=@SMSwebRcpt;
292 open F,"$HOME/priv/WWW-SMS-$SMSwebRcpt_username.pwd" or return 0;
296 my $sms=WWW::SMS->new(@SMSwebRcpt,$frag,"username"=>$SMSwebRcpt_username,"passwd"=>$pwd);
297 for ($sms->gateways("sorted"=>"reliability")) {
298 last if $sms->send($_);
299 Sys::Syslog::syslog("warning","Web SMS send failed: %s",$WWW::SMS::Error);
300 my $void=$WWW::SMS::Error; # Prevent: Name "WWW::SMS::Error" used only once
308 my($squeezed,$smscount,@lens)=@_;
315 my($ignorenewmail,$smscount,%args)=@_;
317 my $text=PerlMail::Config::audit_sms(
318 "subject"=>unmime($Audit->subject()),
319 "from"=>[ Mail::Address->parse(unmime($Audit->from())) ],
320 "body"=>substr(body_simple(),0,$MaxBodySMS*(1+0.25*$smscount)),
323 ($texthead,$text)=@$text if ref $text;
324 do { print "$texthead\n$text\n"; return; } if $opt_smstest;
325 my @lens=smslens($ignorenewmail,$smscount,%args);
327 $maxlen+=$_ for (@lens);
329 for my $squeeze (@sms_squeezes) {
331 Lingua::EN::Squeeze::SqueezeControl($_) if defined ($_=$squeeze->{"SqueezeControl"});
332 $Lingua::EN::Squeeze::SQZ_OPTIMIZE_LEVEL or 1; # prevent: Name "$_" used only once: possible typo
333 $Lingua::EN::Squeeze::SQZ_OPTIMIZE_LEVEL=$_ if defined ($_=$squeeze->{"SQZ_OPTIMIZE_LEVEL"});
334 $squeezed=Lingua::EN::Squeeze::SqueezeText($text);
336 last if $maxlen>=length($texthead.$squeezed);
338 $squeezed=substr $texthead.$squeezed,0,$maxlen; # strip if we passed thru last for() above
340 for ($smscount=0;$recalclen<length $squeezed;$smscount++) {
341 $recalclen+=$lens[$smscount];
343 my $func=($ignorenewmail ? \&smssend_web : \&smssend_mail);
344 &$func($squeezed,$smscount,@lens);
349 my($ignorenewmail,@args)=@_;
351 return if !$opt_smstest && !$opt_idle && defined useridle();
353 return $_ if $_=smssend(1,@args); # web
354 return $_ if !$ignorenewmail && ($_=smssend(0,@args)); # mail
355 warn "Unable to SMSsend the mail";
362 return "<???>" if !defined($_) || /^\s*$/s;
365 return $_ if length($_)<128;
366 return substr($_,0,128)."...";
369 our $profile_eval_depth=0;
375 die "Nesting profile: $name" if 0x10<=(local $profile_eval_depth=$profile_eval_depth+1);
376 return @$name if ref $name;
377 die "Profile not found: $name" if !exists $audit_profile{$name};
378 my @this=@{$audit_profile{$name}};
379 return (profile_eval($'),@this[1..$#this]) if $this[0] && $this[0]=~/^=/;
387 return join(",",map({ $_->name() or $_->address(); } Mail::Address->parse($text)));
396 for (${$_}[1],"iso-8859-2") {
397 last if $_ && ($cstocs=Cz::Cstocs->new($_,"ascii"));
400 } MIME::Words::decode_mimewords($text));
403 # $folder: "$folder; comment"
404 # $profile as profile_eval($name)
407 my($folder,$profile,%args)=@_;
409 $profile=$store_profile if !$profile;
410 my %do=map({ (!/=/ ? ($_=>1) : ($`=>$')); } profile_eval($profile));
411 Sys::Syslog::syslog("info","%s%s%s: %s: %s",
412 (!$opt_dry ? "" : "--dry: "),
413 (!$store_ignore ? "" : "IGNORED[$store_ignore]: "),
414 map({ cut($_); } $folder,address_show(unmime($Audit->from())),unmime($Audit->subject())),
416 if $do{"syslog"} || $opt_dry;
418 $folder="$Mail/".$' if $folder=~/^=/;
419 push @AuditStored,$folder if $do{"did"};
420 return if $store_ignore || $opt_dry;
421 $DoBell++ if $do{"bell"};
422 write_message($folder) or die;
423 smssend_tryall $store_ignorenewmail,$do{"sms"},%args if $do{"sms"};
428 # no &$funcref=>did smth in this block
429 # &$funcref,@funcargs
432 my($funcref,@funcargs)=@_;
434 return @AuditStored!=$did_last if !$funcref;
435 local $did_last=@AuditStored;
436 &$funcref(@funcargs);
437 return @AuditStored!=$did_last;
440 # Never use Mail::Audit->store() as it will reformat MIME bodies and possibly corrupt OpenPGP!
445 return 1 if $opt_dry; # simulate OK
447 open F,">>$folder" or do { warn "Append \"$folder\": $!"; return 0; };
450 ($_=Mail::Audit::audit_get_lock(\*F,$folder)) and do { warn "Lock \"$folder\": $!"; last; };
451 seek F,0,IO::Handle::SEEK_END or do { warn "Seek-end \"$folder\": $!"; last; };
452 # FIXME: Check for '^From ' to not to rely on our network peer
453 print F $Message or do { warn "Write to \"$folder\": $!"; last; };
454 do { print F "\n"; warn "Missing trailing newline, fixed"; } if $Message!~/\n$/s;
455 close F or do { warn "Close \"$folder\""; last; };
458 warn "MAIL DROPPED for folder: $folder";
469 $message=~s/(\n)(From )/$1>$2/sg;
470 local $Message=$message;
471 # Cannot call 'local' for our-imported variable:
472 my $Audit_save=$Audit;
473 $Audit=Mail::Audit->new(
474 "emergency"=>"$Mail/emergency",
475 "data"=>[map("$_\n",split("\n",$message))],
476 "log"=>"$HOME/.perlmail.log",
479 local @AuditStored=();
480 do { smssend 0,$opt_smstest; return; } if $opt_smstest;
481 write_message("$Mail/input") or die;
482 PerlMail::Config::audit();
483 warn 'Corrupted $_, repaired' if defined($save_)!=defined($_) || (defined($_) && $save_ ne $_);
490 # return: true (error-message or "1") if is spam
495 $cmd||="$HOME/bin/spamassassin --exit-code";
496 # spamassassin has exit code 1 if IS spam, code 0 if NOT spam
498 local $SIG{"PIPE"}=sub { warn "spamassassin gave me SIGPIPE: broken pipe"; };
499 # prevent Razor2's: Can't call method "log" on unblessed reference at Razor2/Client/Agent.pm line 212.
500 local $ENV{"HOME"}=$HOME;
501 # 2>/dev/null to prevent error messages to corrupt inetd() output of perlmail-accept(1)
502 open CHILD,"|$cmd --mbox >/dev/null 2>/dev/null"
504 print CHILD $Message;
505 my $return=close CHILD;
506 return undef() if !WIFEXITED($?);
507 return undef() if WIFSIGNALED($?);
508 return undef() if WIFSTOPPED($?);
509 return 1 if WEXITSTATUS($?); # is-spam
513 # NOTE: returns undef() if !wantarray and the first header is unrecognized
518 for my $hdr ($Audit->head->get("Received")) {
519 my($for)=($hdr=~/\bfor\s+\<?(\S+)\>?\b/);
520 return $for if !wantarray();
521 push @r,$for if $for;
522 my($from,$fromaddr)=($hdr=~/\bfrom\s+(?:(\S+)\b.*?)??\[((?:\d{1,3}\.){3}\d{1,3})\]/);
523 $from=$fromaddr if !defined $from;
524 push @r,"$from:$fromaddr" if $from;
529 # Extended Mail::Audit::MAPS
530 # $domain,$full,[$timeout]
533 my($domain,$full,$timeout)=@_;
536 $Mail::Audit::MAPS::host=$domain;
537 my @hosts=map({ s/^.*://; "[$_]"; } # strip DNS part
538 grep({ /^([^:@]*):/ # $1 is DNS name, $' is IP address
539 && !$alternates_host{$1} # leave only foreign hosts
540 && !$dnsbl_whitelist{$'}; } (Received_for()))
542 splice @hosts,1 if !$full && @hosts; # "&& @hosts" to prevent: WARN: splice() offset past end of array
544 package My::Audit::Faked;
545 sub received { return @{$_[0]->{"received"}}; }
548 "received"=>[@hosts],
550 bless $self_faked,"My::Audit::Faked";
551 return Mail::Audit::rblcheck($self_faked,$timeout);
558 next if !(my $key=(/^alias\s+(\S+)\s+/)[0]);
559 for my $addrobj (Mail::Address->parse($')) {
560 my $addr=$addrobj->address();
561 my $ref=\$r{"\L$addr"};
562 $$ref=$key if !$$ref; # use always the first occurence to prefer nicks
568 # FIXME: host may get multiple recipients and thus not showing "for <...>"
569 # FIXME: muttrc_get("from") is too strict
570 sub store_muttrc_alternates
572 my($prefix,$profile)=@_;
574 my $alternates=muttrc_get("alternates") or return;
575 my $alternatesre=qr/$alternates/si;
576 my $From=muttrc_get("from") or return;
577 my $Fromre=qr/^\Q$From\E$/si;
578 my $Fromobj=parseone $From or return;
579 warn "'From' \"$From\" not matched by 'alternates': $alternatesre"
580 if $From!~/$alternates/si;
581 for my $for (reverse Received_for()) {
582 $for=~s/:.*$//; # strip IP address here
583 my $forobj=parseone $for;
584 if ($forobj && $forobj->host()) {
585 # it is 'for' our primary address
586 next if lc($forobj->host()) eq lc($Fromobj->host()); # or 'return'? shouldn't matter
588 next if !$alternates_host{lc $for} && $for!~/$alternatesre/si;
589 store "$prefix\L$for",($profile || []);
595 # $header: !ref => $Audit->get($header)
596 # $maybeaddress: qr/regex/i
597 # $maybeaddress: "string"
598 # $maybeaddress: "<Regexp:regex>" # hack :-(
599 # $maybeaddress: "<user@host>"
600 # $maybeaddress: "<user@>"
601 # $maybeaddress: "<@host>"
604 my($re,$justone,$header,$maybeaddress)=@_;
607 $header=join(",",&$header());
610 $header=$Audit->get($header);
612 return 0 if !$header;
613 return $header=~/$maybeaddress/i if "Regexp" eq ref $maybeaddress;
614 return $header=~/$re/i if !defined(my $want=($maybeaddress=~/^\<(.*)\>$/)[0]);
615 my @parsed=Mail::Address->parse($header);
616 warn "'mailto:' forbidden in pattern: $want" if $want=~/^\Qmailto:\E/;
617 return 0 if $justone && 1!=@parsed;
619 if ($want=~/^Regexp:/)
620 { $_->address()=~/$'/i; }
622 { $_->user() =~/^(?:\Qmailto:\E)?\Q$`\E/i; }
624 { $_->host() =~/^\Q$'\E/i; }
626 { $_->address()=~/^(?:\Qmailto:\E)?\Q$want\E/i; }
632 my($header,$substr)=@_;
634 return _headercore(qr/\Q$substr\E/i,0,$header,$substr);
639 my($header,$string)=@_;
641 return _headercore(qr/\Q$string\E/i,1,$header,$string);
649 my $text=$Audit->get($header);
651 while (my($from,$to)=each(%$map)) {
652 $text=~s/\b\Q$from\E\b/$to/gsi;
654 return if $text eq $orig;
655 $Audit->put_header("X-PerlMail-header_remap-$header",$orig);
656 $Audit->replace_header($header,$text);
662 $Getopt::Long::ignorecase=0;
663 die "GetOptions error" if !Getopt::Long::GetOptions(
664 "inetd" ,sub { $opt_mode=\&inetd; },
665 "stdin" ,sub { $opt_mode=\&stdin; },
666 "single!" ,\$opt_single,
668 "smstest:s",sub { $opt_mode=\&stdin; $opt_smstest=($_[1] || 1); },
670 "idletest" ,sub { syslogging_restore(); print((defined($_=useridle()) ? $_ : "<undef>")."\n"); exit 0; },
671 "muttrc" ,sub { syslogging_restore(); print scalar muttrc(); exit 0; },
673 # "Excessive arguments" checked in &inetd
674 die "Missing mode" if !$opt_mode;
676 %alternates_host=map((lc($_)=>1),@alternates_host);
677 %dnsbl_whitelist=map(( $_ =>1),@dnsbl_whitelist);