chore: some debug log messages

plugins/rcpt_mysql

@@ -0,0 +1,255 @@
+use Qpsmtpd::Constants;
+use DBI;
+
+
+#
+# called when initializing the plugin 
+#
+sub init {
+    my ($self, $qp, %args) = @_;
+
+    # some default values
+    $self->{database} = "mail";
+    $self->{host} = "localhost";
+    $self->{port} = "3306";
+    $self->{user} = undef;
+    $self->{pass} = undef;
+    $self->{rawquery}= undef;
+
+    # the cache timeout in seconds
+    $self->{cacheTimeout} = 500; #seconds
+
+    # a map for caching database repsonses
+    # done on a per email basis
+    $self->{cache} = {};
+
+    # parse the configuration file
+    $self->parseConfig();
+
+    $self->createQuery();
+
+    $self->createDSN();
+}
+
+sub createDSN 
+{
+    my $self = shift;
+   #my $dsn = "DBI:mysql:database=$database;host=$hostname;port=$port";
+    my $dsn = "DBI:MariaDB:database=" . $self->{database} . ";host=" . $self->{host} . ";port=" . $self->{port};
+    $self->{dsn} = $dsn;
+
+    # try to parse the dsn to ensure it is valid
+    my @data = DBI->parse_dsn($self->{dsn});
+
+    if (@data == 0)
+    {
+         $self->log(LOGERROR, "DSN " .  $self->{dsn} . " not valid");
+         $self->{dsn}="";
+    }
+
+    $self->log(LOGDEBUG, "created DSN " . $self->{dsn});
+}
+
+sub createQuery
+{
+    my $self = shift;
+
+    #
+    # !u the user part of the rcpt
+    # !d the domain part of the rcpt
+
+    my @params;
+    my @variables = split /!/,$self->{rawquery};
+
+    for my $v (@variables)
+    {
+        if ($v eq "u")
+        {
+            push(@params,"user");
+        }
+        elsif ($v eq "d")
+        {
+            push(@params,"domain")
+        }
+    }
+
+    $self->{sqlparams}=\@params;
+
+    my $query = $self->{rawquery};
+    $query =~s/!u/?/g;
+    $query =~s/!d/?/g;
+
+    $self->{sqlquery}=$query;
+
+    $self->log(LOGDEBUG, "created query " . $self->{sqlquery});
+}
+
+sub prepareParams
+{
+    my $self = shift;
+    my $recipient = shift;
+
+    my @params;
+
+    for my $p (@params)
+    {
+        if ($p eq "user")
+        {
+            push(@params,$recipient->user);
+        }
+        elsif($p eq "domain")
+        {
+           push(@params,$recipient->user); 
+        }
+    }
+
+    return @params;
+}
+
+sub parseConfig 
+{
+    my $self = shift;
+
+    # parse the configuration file of this plugin line by line
+    my @config = $self->qp->config('rcpt_mysql');
+
+    for my $line (@config)
+    {
+        $self->log(LOGDEBUG, "config line " . $line);
+        my @value = split /:=/, $line;
+
+        my $key = lc($value[0]);
+
+        if ( $key eq "database")
+        {
+            $self->{database} = $value[1];
+        }
+        elsif ( $key eq "host")
+        {
+            $self->{host} = $value[1];
+        }
+        elsif ( $key eq "user")
+        {
+            $self->{user} = $value[1];
+        }
+        elsif ( $key eq "pass")
+        {
+            $self->{pass} = $value[1];
+        }
+        elsif ( $key eq "port")
+        {
+            $self->{port} = $value[1];
+        }
+        elsif ( $key eq "cachetimeout")
+        {
+            $self->{cacheTimeout} = $value[1];
+        }
+        elsif ( $key eq "pass")
+        {
+            $self->{pass} = $value[1];
+        }
+        elsif ( $key eq "query")
+        {
+            $self->{rawquery} = $value[1];
+        }
+        else 
+        {
+            warn("Key \"" . $key . "\" is an unknown configuration option");
+        }
+
+    }
+
+}
+
+sub askCache 
+{
+    my $self      = shift;
+    my $recipient = shift;
+    
+    # combine to a normal recipient
+    my $rcpt = lc $recipient->user . '@' . lc $recipient->host;
+
+    # check if there is something in the cache for this recipient
+    if ($self->{cache}->{$rcpt} && $self->{cache}->{$rcpt}->{time}-time() <= $self->{cacheTimeout}) {
+        if ($self->{cache}->{$rcpt}->{hit} == 0 )
+        {
+            return DECLINED;
+        }
+        else 
+        {
+            return OK;
+        }
+    }
+
+    return undef;
+}
+
+sub askDatabase 
+{
+    my $self        = shift;
+    my $recipient   = shift;
+    
+    $self->log(LOGDEBUG, "asking database for: $recipient ");
+
+    if (length($self->{dsn}) == 0)
+    {
+        $self->log(LOGERROR, "DSN not valid not checking recipient in database");
+        return DECLINED;
+    }
+
+    my $dsn = $self->{dsn};
+    my $dbh         = DBI->connect($dsn, $self->{user}, $self->{pass}, { RaiseError => 0});
+
+    if ($dbh->err())
+    {
+        $self->log(LOGERROR, "error connecting to DB: " . $dbh->errstr());
+        return DECLINED;
+    }
+
+    my $sth = $dbh->prepare($self->{sqlquery});
+    if ($sth->err())
+    {
+        $self->log(LOGERROR, "error preparing query: " . $sth->errstr());
+        return DECLINED ;
+    }
+
+    $sth->execute($self->prepareParams($recipient));
+
+    my $ret = DECLINED;
+
+    if ($sth->rows > 0)
+    {
+        $ret = OK;
+    }
+
+    return $ret;
+}
+
+#
+# plugin hook called if rcpt_to is issued within the smtp session
+#
+sub rcpt_to {
+    my ($self, $transaction, $recipient) = @_;
+
+    # some basic validations
+    $self->log(LOGDEBUG, "missing recipient host or recipient user (" . $recipient->host . "/" . $recipient->user . ")") unless  $recipient->host && $recipient->user;
+    return DECLINED unless $recipient->host && $recipient->user;
+
+    # ask the cache for results
+    my $cacheResult = $self->askCache($recipient);
+    return $cacheResult if defined($cacheResult);
+
+    # ask the database for results
+    return $self->askDatabase($recipient);    
+}
+
+#
+# called for registering all the hooks
+#
+sub register {
+    my ($self, $qp, %args) = @_;
+    
+    
+    $self->register_hook("rcpt", "rcpt_to");
+    
+}

plugins/registry.txt

@@ -55,6 +55,8 @@
 605	rcpt_ok						rok		rcpok
 608	bogus_bounce				bog		bogus		check_bogus_bounce
 609	greylisting					gry		greyl
+610 rcpt_mysql                  rmy     rcmys
+
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