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On Tue, 19 Jan 2010, Johan Lundberg wrote:
Primary, follow the advice of Dave and move your check into filter().
During this phase the module variables (globally defined varables
in mimedefang-filter) are shared, hence, you can prepare the check in
filter_begin(), e.g. open log file, prepare the condition when to search
for the pattern, do the subject check etc, and end it in filter_end(),
e.g close the log file.
If you read INPUTMSG directly, you have to deal with MIME encoding etc,
hence, I would go the filter() route.
BTW: because multiple MIMEDefang processes may run simultaneously,
you might loose log info. You should use Syslog.
sub filter_end {
*snip* *snip*
# Search for "pattern" in the mail body
# and prepend subject with [See Me].
my $sender = $entity->head->get('From',0);
Well, there is $Sender, which is the envelope MAIL FROM, which probably
differs from the header. BTW: There is probably no From header.
if ($sender =~ /examp...@example\.com/) {
I guess, you want to check anchored regex:
if ($sender =~ /\A(examp...@example\.com|..)\z/) {
my $subject = $entity->head->get('Subject',0);
Already in $Subject
if ($subject =~ /pattern/i) {
print INFO "Subject hit: Subject changed!\n";
action_change_header('Subject', "[See Me]$subject");
} else {
my $body = $entity->bodyhandle;
I'm not sure, if this works with multipart MIME messages, at least
you would need some checks.
my $IO = $body->open("r");
while (defined($_ = $IO->getline)) {
if (/pattern/i) {
print INFO "Body hit: Subject changed!\n";
print INFO "Body line: $_\n";
action_change_header('Subject', "[See Me]$subject");
last;
}
BTW: If you use SpamAssassin, you can create your own rule, score it with
"0.0" - so the SPAM score is not changed - and check the matched rules for
your one.
Regards,
- --
Steffen Kaiser
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