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#!/usr/bin/perl |
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|
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# ========================================================================== |
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# |
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# recieveMail v0.04 |
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# a simple mail filter done in perl with CPAN-module "Mail::Audit" |
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# |
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# |
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# 2002-11-09, joko@netfrag.org |
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# + recieveMail now can run globally (/etc/mail/smrsh!) |
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# + $HOME is taken from $ENV{HOME} or $ENV{PWD} |
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# + rules are taken from $HOME/Mail/.rules.pm |
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# + fallback mechanism(s) |
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# + bugfixes |
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# |
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# 2002-10-14, joko@netfrag.org |
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# + $LOGFILE is used now (recievemail.log) |
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# + tracing (uses $LOGFILE) |
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# + checks delivery path for existance, |
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# changes $LOGFILE if needed |
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# |
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# 2002-07-17, joko@netfrag.org |
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# + added filtering by target (destination-routing) |
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# (looks in "to", "cc" and "bcc") |
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# |
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# 2001-12-05, joko@netfrag.org |
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# + initial internal release |
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# |
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# |
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# TODO: |
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# - more sophisticated filtering |
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# - configuration-comfort (use perl-arrays and -hashes for rule-declaration) |
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# - Html-Gui to add/edit/remove rules |
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# - rule base located in LDAP (local delivery routing) |
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# - completely hide away regex-stuff and provide simpler wildcarding |
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# - hide needed quoting of dots (.) and ats (@) in addresses |
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# - provide: beginsWith(string), endsWith(string), beginsAt(string, pos|regex) |
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# - this could become a CPAN-module sometimes (?): |
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# - "String"-Object to be inherited from gives these methods to you |
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# - examples: |
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# - routeTo("mbox:/path/to/mbox") if $to->beginsWith("hello"); |
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# - routeTo("fax:+4930123456") if $subject->contains("gatefax"); |
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# - metadata: |
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# - add some info about the context we are running in: |
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# - console |
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# - sendmail/normal |
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# - sendmail/smrsh |
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# - add some info about the user we are doing this for: |
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# - username |
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# - home-directory |
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# |
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# ========================================================================== |
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|
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use strict; |
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# don't use warnings; |
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|
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use Mail::Audit; |
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use Data::Dumper; |
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use Getopt::Long; |
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|
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|
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# - - - - - - - - - - - - - - - - - - - - |
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# options |
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# - - - - - - - - - - - - - - - - - - - - |
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my $opt_base = ''; |
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my $opt_rulesfile = ''; |
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GetOptions( |
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'base=s' => \$opt_base, |
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'rules=s' => \$opt_rulesfile, |
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); |
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$opt_base ||= $ENV{HOME}; |
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$opt_base ||= $ENV{PWD}; |
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|
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|
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# - - - - - - - - - - - - - - - - - - - - |
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# |
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# targets |
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# |
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# declare and initialize some variables |
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# these are mostly base paths |
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# mail should be delivered to |
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# |
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# - - - - - - - - - - - - - - - - - - - - |
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#my $HOME = "/home/joko/virtual/joko_mail"; |
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my $USER = $ENV{USER}; |
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my $HOME = $opt_base; |
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my $MAILDIR = "$HOME/Mail"; |
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my $LOGFILE = "$MAILDIR/recievemail.log"; |
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my $RULESFILE = "$MAILDIR/.rules.pm"; |
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my $LOCKFILE = "$HOME/.procmail.lockfile"; |
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my $DEFAULT = "$MAILDIR/Inbox"; |
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my $DEBUG = 0; |
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my $TRACE = 1; |
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my $VERBOSE = 1; |
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|
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# override settings |
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# override $RULESFILE if given as option on the command line |
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$RULESFILE = $opt_rulesfile if ($opt_rulesfile); |
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# change logfile |
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$LOGFILE = "recievemail-emerg.log" if (! -e $MAILDIR); |
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|
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|
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# - - - - - - - - - - - - - - - - - - - - |
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# main |
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# - - - - - - - - - - - - - - - - - - - - |
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|
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# "jump" into processing of new incoming mail and get a "handler" to this mail |
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my $incoming = Mail::Audit->new; |
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|
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# 0.a. pre flight tracing |
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if ($TRACE) { |
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s2f("Mail from " . gchomp($incoming->from) . " to " . gchomp($incoming->to)); |
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s2f("Subject: " . gchomp($incoming->subject)); |
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} |
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|
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# 0.b. pre flight checks |
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|
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# TODO: check if $HOME is empty |
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|
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# check if $HOME exists |
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if (! -e $MAILDIR) { |
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my $msg = "delivery failed, base directory $MAILDIR does not exist"; |
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report($msg); |
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accept_spool(); |
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} |
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|
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# 1. include rules or fallback |
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# check if $RULESFILE exists |
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if (-f $RULESFILE) { |
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report("loading rules from \"$RULESFILE\""); |
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require $RULESFILE; |
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} else { |
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#die("$RULESFILE doesn't exist"); |
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report("configured rulesfile \"$RULESFILE\" doesn't exist"); |
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accept_spool(); |
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} |
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|
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# 2. export required stuff to rules namespace |
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export_symbols(); |
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|
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# 3. run dispatcher |
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report("running \"rules::dispatch\""); |
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rules::dispatch(); |
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|
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# 4. dispatcher didn't do anything |
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report("dispatcher could not apply any filter, using default delivery"); |
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|
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# the default-handler: simply accept all mails and route them to "/var/spool/mail" |
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# $incoming->accept(); |
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|
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# if you want to reject all mails coming through to here, do a ... |
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# $incoming->reject; |
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|
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# catch all mails and route them to a "DEFAULT"-inbox |
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jaccept($DEFAULT); |
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|
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|
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|
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|
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|
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# - - - - - - - - - - - - - - - - - - - - |
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# tracing & reporting |
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# - - - - - - - - - - - - - - - - - - - - |
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sub s2f { |
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my $str = shift; |
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open(FH, '>>' . $LOGFILE); |
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print FH $str, "\n"; |
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close(FH); |
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} |
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|
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sub report { |
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my $msg = shift; |
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# TODO: tracing, debugging |
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|
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print $msg, "\n" if $VERBOSE; |
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if ($TRACE) { |
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s2f($msg); |
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} |
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|
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} |
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|
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# - - - - - - - - - - - - - - - - - - - - |
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# processing mail |
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# - - - - - - - - - - - - - - - - - - - - |
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|
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sub compareTarget { |
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my $pattern = shift; |
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my $ok = 0; |
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$ok = 1 if ($incoming->to =~ m/$pattern/); |
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$ok = 1 if ($incoming->cc =~ m/$pattern/); |
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$ok = 1 if ($incoming->bcc =~ m/$pattern/); |
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return $ok; |
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} |
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|
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sub jaccept { |
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my $deliver_to = shift; |
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|
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report("delivering to: $deliver_to"); |
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|
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# check deliver_to path |
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if (! -e $deliver_to) { |
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report("deliver_to path \"$deliver_to\" doesn't exist"); |
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accept_spool(); |
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return; |
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} |
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|
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$incoming->accept($deliver_to); |
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} |
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|
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sub accept_spool { |
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my $path = "/var/spool/mail/$USER"; |
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report("defaulting to spool delivery ($path)"); |
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$incoming->accept($path); |
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} |
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|
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|
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# - - - - - - - - - - - - - - - - - - - - |
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# helper functions |
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# - - - - - - - - - - - - - - - - - - - - |
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|
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sub get_coderef { |
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my $codepack = shift; |
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my $method = shift; |
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$codepack || return '[error]'; |
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$method ||= ''; |
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$method && ($codepack .= '::'); |
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return eval '\&' . $codepack . $method . ';'; |
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} |
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|
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sub export_symbols { |
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# my $callpack = 'rules'; |
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# my @EXPORT = qw( incoming subject MAILDIR jaccept ); |
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# foreach my $sym (@EXPORT) { |
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no strict 'refs'; |
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# *{"${callpack}::$sym"} = get_coderef('main', $sym); |
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# } |
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{ |
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no strict 'refs'; |
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*{"rules::jaccept"} = get_coderef('main', 'jaccept'); |
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*{"rules::report"} = get_coderef('main', 'report'); |
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*{"rules::compareTarget"} = get_coderef('main', 'compareTarget'); |
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} |
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$rules::MAILDIR = $MAILDIR; |
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$rules::incoming = $incoming; |
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} |
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|
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sub gchomp { |
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my $str = shift; |
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chomp($str); |
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return $str; |
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} |
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