X-Git-Url: http://git.jankratochvil.net/?p=PerlMail.git;a=blobdiff_plain;f=perlmail-accept;h=3432acb7d094afd6508523254e3715e30d3177f1;hp=30e7833254fcf66aef09b191937c0445db69a28a;hb=851de39e0b19fb4bd49c386e0da048e987110b72;hpb=9d03569bd26dfb0f54f21063445fc9d28ed1c4d3 diff --git a/perlmail-accept b/perlmail-accept index 30e7833..3432acb 100755 --- a/perlmail-accept +++ b/perlmail-accept @@ -1,6 +1,22 @@ #! /usr/bin/perl -# -# $Id$ +# +# $Id$ +# Copyright (C) 2002-2003 Jan Kratochvil +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + use vars qw($VERSION); $VERSION=do { my @r=(q$Revision$=~/\d+/g); sprintf "%d.".("%03d"x$#r),@r; }; @@ -31,6 +47,7 @@ use File::Basename; BEGIN { use lib $ENV{"PERLMAIL_BASEDIR"} || File::Basename::dirname($0); use PerlMail::Config; + use PerlMail::Lib; } use Mail::Audit qw(MAPS); @@ -52,10 +69,13 @@ require HTTP::Request; require LWP::UserAgent; use URI::Escape 'uri_escape'; require WWW::SMS; +require Authen::SASL; # Sanity check for &Net::SMTP::auth +use MIME::Base64; +use IPC::Open3; +use POSIX ":sys_wait_h"; -our($Message,$Audit,@AuditStored,$store_ignore,$store_ignorenewmail,$store_profile,$DoBell); -our(%audit_profile,@sms_squeezes,@alternates_host,@dnsbl_whitelist); # imported +our($Message,@AuditStored,$DoBell); my %alternates_host; # from @alternates_host my %dnsbl_whitelist; # from @dnsbl_whitelist @@ -64,7 +84,7 @@ my %dnsbl_whitelist; # from @dnsbl_whitelist our $procmailTO_ =qr'^((Original-)?(Resent-)?(To|Cc|Bcc)|(X-Envelope|Apparently(-Resent)?)-To):(.*[^-a-zA-Z0-9_.])?'mio; our $procmailTO =qr'^((Original-)?(Resent-)?(To|Cc|Bcc)|(X-Envelope|Apparently(-Resent)?)-To):(.*[^a-zA-Z])?'mio; 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; -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; +$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; # perl-5.8.0 does not cope w/original FROM_MAILER on the third '?' character # Thus we did '([^>]*[^(.%@a-z0-9])?' -> '[^>]*\b', I hope it is somehow similiar # 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; @@ -73,6 +93,7 @@ my $opt_mode; my $opt_smstest; # 1 or $smscount my $opt_idle; my $opt_dry; +my $opt_single; sub process; @@ -85,7 +106,7 @@ sub stdin local $_; while (<>) { die "Invalid 'From ' line: $_" if $message eq "" && !/^From /; - if (/^From / && $message) { + if (!$opt_single && /^From / && $message) { process $message; $message=""; } @@ -114,8 +135,10 @@ sub inetd $length==($_=read STDIN,$message,$length) or confess "Got $_ out of required $length bytes"; $length==length $message or confess "False read return ".length($message)." instead of $length"; { - local *STDOUT; - local *STDERR; + # Do not: local *STDOUT; # FIXME: fd's inherited by spawned processes are not closed this way! + # local *STDERR; # FIXME: fd's inherited by spawned processes are not closed this way! + # as IPC::Open3 and IPC::Open2 will not redirect the output + # and send it to the original socket instead! local $DoBell=0; process $message; if ($DoBell) { @@ -297,7 +320,7 @@ sub smssend { my($ignorenewmail,$smscount,%args)=@_; - my $text=audit_sms( + my $text=PerlMail::Config::audit_sms( "subject"=>unmime($Audit->subject()), "from"=>[ Mail::Address->parse(unmime($Audit->from())) ], "body"=>substr(body_simple(),0,$MaxBodySMS*(1+0.25*$smscount)), @@ -425,7 +448,7 @@ sub write_message { my($folder)=@_; - return if $opt_dry; + return 1 if $opt_dry; # simulate OK local *F; open F,">>$folder" or do { warn "Append \"$folder\": $!"; return 0; }; { @@ -449,8 +472,11 @@ my($message)=@_; local $_=$_; my $save_=$_; + $message=~s/(\n)(From )/$1>$2/sg; local $Message=$message; - local $Audit=Mail::Audit->new( + # Cannot call 'local' for our-imported variable: + my $Audit_save=$Audit; + $Audit=Mail::Audit->new( "emergency"=>"$Mail/emergency", "data"=>[map("$_\n",split("\n",$message))], "log"=>"$HOME/.perlmail.log", @@ -459,43 +485,47 @@ my($message)=@_; local @AuditStored=(); do { smssend 0,$opt_smstest; return; } if $opt_smstest; write_message("$Mail/input") or die; - audit(); + PerlMail::Config::audit(); warn 'Corrupted $_, repaired' if defined($save_)!=defined($_) || (defined($_) && $save_ ne $_); + # restore: + $Audit=$Audit_save; } # utility functions: +sub _spamchildcode +{ +my($err,$isspam)=@_; + + $err=$? if !defined $err; + return undef() if !WIFEXITED($?); + return undef() if WIFSIGNALED($?); + return undef() if WIFSTOPPED($?); + return $isspam||1 if WEXITSTATUS($?); # is-spam + return 0; # not-spam +} + # return: true (error-message or "1") if is spam -sub razor2 +sub spamassassin { - # razor-check has exit code 1 if NOT spam, code 0 if IS spam +my($cmd)=@_; + + $cmd||="$HOME/bin/spamassassin --exit-code"; + # spamassassin has exit code 1 if IS spam, code 0 if NOT spam local *CHILD; - local $SIG{"PIPE"}=sub { warn "razor2 gave me SIGPIPE: broken pipe"; }; + local $SIG{"PIPE"}=sub { warn "spamassassin gave me SIGPIPE: broken pipe"; }; # prevent Razor2's: Can't call method "log" on unblessed reference at Razor2/Client/Agent.pm line 212. local $ENV{"HOME"}=$HOME; - open CHILD,'|' - .'('.'(razor-check 2>&1;echo >&3 $?)' - .'|sed "s/^/razor-check: /"' - .'|logger -t "perlmail['.$$.']" -p mail.crit' - .') 3>&1' - .'|exit `cat`' + # 2>/dev/null to prevent error messages to corrupt inetd() output of perlmail-accept(1) + open CHILD,"|$cmd --mbox >/dev/null 2>/dev/null" or return 0; print CHILD $Message; - my $return; - { - local $/=undef(); - $return= || 1; - } close CHILD; - return undef() if !WIFEXITED($?); - return undef() if WIFSIGNALED($?); - return undef() if WIFSTOPPED($?); - return undef() if WEXITSTATUS($?); - return $return; # is-spam + return _spamchildcode; } # NOTE: returns undef() if !wantarray and the first header is unrecognized -# Returns also hosts +# Returns always HOST:IP pair(s). sub Received_for { my @r=(); @@ -512,96 +542,72 @@ sub Received_for # Extended Mail::Audit::MAPS # $domain,$full,[$timeout] +# Returns false if valid, code if spam detected. sub dnsbl { my($domain,$full,$timeout)=@_; $timeout||=30; # sec $Mail::Audit::MAPS::host=$domain; - my @hosts=map({ s/^.*://; "[$_]"; } # strip DNS part - grep({ /^([^:@]*):/ # $1 is DNS name, $' is IP address - && !$alternates_host{$1} # leave only foreign hosts - && !$dnsbl_whitelist{$'}; } (Received_for())) - ); - splice @hosts,1 if !$full && @hosts; # "&& @hosts" to prevent: WARN: splice() offset past end of array - { - package My::Audit::Faked; - sub received { return @{$_[0]->{"received"}}; } - } - my $self_faked={ - "received"=>[@hosts], - }; - bless $self_faked,"My::Audit::Faked"; - return Mail::Audit::rblcheck($self_faked,$timeout); -} - -our %muttrc_pending=(); -sub muttrc -{ -my($muttrc)=@_; - - $muttrc||="$HOME/.muttrc"; - $muttrc=~s/^\~/$HOME/; - do { warn "Looping muttrc, ignoring: $muttrc"; return (); } if $muttrc_pending{$muttrc}; - local $muttrc_pending{$muttrc}=1; - local *MUTTRC; - open MUTTRC,$muttrc or do { warn "open \"$muttrc\": $!"; return (); }; - local $/="\n"; - local $_; - my @r=(); - # far emulation mutt/init.c/mutt_parse_rc_line() - while () { - s/^[\s;]*//s; - s/[#;].*$//s; - s/\s*$//s; - next if !/^(\S+)\s*/s; - if ($1 eq "source") { - $_=$'; - do { warn "Wrong 'source' parameters at $muttrc:$.: $_"; next; } if !/^\S+$/; - push @r,muttrc($_); - next; + for my $host (Received_for()) { + next if $host!~/^([^:@]*):/; + my $ip=$'; + # $1 is DNS name, $ip is IP address + next if $alternates_host{$1}; # leave only foreign hosts + next if $dnsbl_whitelist{$ip}; + { + package My::Audit::Faked; + sub received { return @{$_[0]->{"received"}}; } } - push @r,$_; + my $self_faked={ + "received"=>["[$ip]"], + }; + bless $self_faked,"My::Audit::Faked"; + my $code=Mail::Audit::rblcheck($self_faked,$timeout); + next if !$code; + # Some 0.0.0.0 etc. found for , see: &Mail::Audit::MAPS::_checkit + # Do not: $code!='1 Invalid IP address ' + # as it causes warn. + return $code if $code ne '1 Invalid IP address '; + return if !$full; } - close MUTTRC or warn "close \"$muttrc\": $!"; - return wantarray() ? @r : join("",map("$_\n",@r)); -} - -my %mutteval_charmap=( # WARNING: Don't use "" or "0" here, see below for "|| warn"! - '\\'=>"\\", - 'r'=>"\r", - 'n'=>"\n", - 't'=>"\t", - 'f'=>"\f", - 'e'=>"\e", - ); -# mutt/init.c/mutt_extract_token() -sub mutteval -{ - local $_=$_[0]; - return $_ if !s/^"//; - do { warn "Missing trailing quote in: $_"; return $_; } if !s/"$//; - s/\\(.)/$mutteval_charmap{$1} || warn "Undefined '\\$1' sequence in: $_";/ges; - return $_; } -sub muttrc_get -{ -my(@headers)=@_; - - my @r=map({ (ref $_ ? $_ : qr/^\s*set\s+\Q$_\E\s*=\s*(.*?)\s*$/si); } @headers); - my %r=map(($_=>undef()),@r); - for (muttrc()) { - for my $ritem (@r) { - /$ritem/si or next; - $r{$ritem}=mutteval $1; - } - } - for my $var (grep { !defined($r{$_}) } @r) { - warn "Variable '$var' not found in muttrc"; - return undef(); - } - return wantarray() ? %r : $r{$r[0]}; +# Returns true if IS virus; the message will contain the virus name +sub clamscan +{ +my($cmd)=@_; + + $cmd||='clamscan --no-summary -'; + # clamscan has exit code 1 if IS virus , code 0 if NOT virus + # Do not use IPC::Open2 as it would try to use our STDERR which is not valid by: local *STDERR; + local(*WR,*RD,*ERR); + local $SIG{"PIPE"}=sub { warn "clamscan '$cmd' gave me SIGPIPE: broken pipe"; }; + my $pid=open3(\*WR,\*RD,\*ERR,$cmd.' 2>&1') + or do { cluck "IPC::Open3 $cmd: $!"; return 0; }; + print WR $Message; + close WR or do { cluck "close WR of $cmd: $!"; return 0; }; + my $status=do { local $/=undef(); ; }; + close RD or do { cluck "close RD of $cmd: $!"; return 0; }; + # Do not: $status.=do { local $/=undef(); ; }; + # close ERR or do { cluck "close ERR of $cmd: $!"; return 0; }; + # (FIXME) as it causes: Use of uninitialized value in + # waitpid fills $? for: &_spamchildcode + local $SIG{"ALRM"}=sub { warn "Timeout $clamscan_waitpid_timeout sec waiting for child $cmd"; }; + alarm $clamscan_waitpid_timeout; + # Do not: WNOHANG + # as it would not be enough for clamscan(1) even after all close-s above. + my $pidcheck=waitpid($pid,0); + alarm 0; + my $err=$?; + $pidcheck && $pidcheck==$pid + or do { cluck "waitpid for $cmd returned $pidcheck!=$pid"; return 0; }; + $status=~s/^stdin: //mg; + # Prevent: LibClamAV Warning: PGP encoded attachment not scanned + $status=~s/^.*\bwarning:.*\n//img; + $status=~s/\n$//; + return $status if $status ne "OK" && $status; + return _spamchildcode $err,$status; } sub muttrc_aliases @@ -618,20 +624,6 @@ sub muttrc_aliases return %r; } -# FIXME: Unify -# BEGIN perlmail-sendmail -# return: Mail::Address instance or undef() -sub parseone -{ -my($line)=@_; - - return undef() if !defined $line; - my @r=Mail::Address->parse($line); - warn "Got ".scalar(@r)." addresses while wanting just one; when parsing: $line" if 1!=@r; - return $r[0]; -} -# END perlmail-sendmail - # FIXME: host may get multiple recipients and thus not showing "for <...>" # FIXME: muttrc_get("from") is too strict sub store_muttrc_alternates @@ -647,15 +639,10 @@ my($prefix,$profile)=@_; if $From!~/$alternates/si; for my $for (reverse Received_for()) { $for=~s/:.*$//; # strip IP address here - if ($Fromobj->user() ne "prog-mutt") { - next if lc($for) eq lc($From); - } - else { - my $forobj=parseone $for; - if ($forobj && $forobj->host()) { - # it is 'for' our primary address - next if lc($forobj->host()) eq lc($Fromobj->host()); # or 'return'? shouldn't matter - } + my $forobj=parseone $for; + if ($forobj && $forobj->host()) { + # it is 'for' our primary address + next if lc($forobj->host()) eq lc($Fromobj->host()); # or 'return'? shouldn't matter } next if !$alternates_host{lc $for} && $for!~/$alternatesre/si; store "$prefix\L$for",($profile || []); @@ -728,6 +715,63 @@ my($header,$map)=@_; $Audit->replace_header($header,$text); } +# LMTP engine: +use Net::Cmd qw(CMD_OK CMD_MORE); +{ + package My::Net::SMTP::LMTP; + require Net::SMTP; + our @ISA=qw(Net::SMTP); + use Net::SMTP; + use Net::Cmd qw(CMD_OK); + use Carp qw(confess cluck); + + # Do not: sub _HELO + # as it would not set {'net_smtp_esmtp'} + sub _EHLO { shift->command("LHLO", @_)->response() == CMD_OK } + + sub clucked + { + my($self,$func,@args)=@_; + + do { return $_ if defined $_; } for $self->$func(@args); + cluck $func; + return; + } +} + + +sub lmtp_deliver +{ +my($admin_user,$admin_pwd,$user_from,$user_to)=@_; + + my $lmtp=My::Net::SMTP::LMTP->clucked("new","localhost","Port"=>"lmtp", +# "Debug"=>1, + ) or return; + bless $lmtp,"My::Net::SMTP::LMTP"; +# Prevent: +# due to: +# $lmtp->auth(Authen::SASL->new( +# "mechanism"=>"PLAIN", +# "callback"=>{ +# "user"=>$admin_user, +# "pass"=>$admin_pwd, +# # Prevent: "authname"=>$admin_user +# # as it causes: DIE: Unknown callback: 'authname'. (user|auth|language|pass) +# })); + # FIXME: Authentication hack: + $lmtp->command("AUTH PLAIN")->response()==CMD_MORE + or do { cluck "auth announce"; return; }; + $lmtp->clucked("command",encode_base64($user_from."\x00".$admin_user."\x00".$admin_pwd)) or return; + $lmtp->clucked("mail",$user_from) or return; + $lmtp->clucked("to",$user_to) or return; + $lmtp->clucked("data"); # Do not: or return; + # Prevent: 554 5.6.0 Message contains invalid header + (my $data=$Message)=~s/\AFrom .*\r?\n//; + $lmtp->clucked("datasend",$data) or return; + $lmtp->clucked("dataend") or return; + $lmtp->clucked("quit") or return; +} + # MAIN @@ -735,6 +779,7 @@ $Getopt::Long::ignorecase=0; die "GetOptions error" if !Getopt::Long::GetOptions( "inetd" ,sub { $opt_mode=\&inetd; }, "stdin" ,sub { $opt_mode=\&stdin; }, + "single!" ,\$opt_single, "dry" ,\$opt_dry, "smstest:s",sub { $opt_mode=\&stdin; $opt_smstest=($_[1] || 1); }, "idle!" ,\$opt_idle, @@ -744,7 +789,6 @@ die "GetOptions error" if !Getopt::Long::GetOptions( # "Excessive arguments" checked in &inetd die "Missing mode" if !$opt_mode; -PerlMail::Config::audit_init(); %alternates_host=map((lc($_)=>1),@alternates_host); %dnsbl_whitelist=map(( $_ =>1),@dnsbl_whitelist);