How to modify post request content using mod_perl

How to modify post request content using mod_perl's filter/handler?

I can read request content in PerlResponseHandler but how do I "attach" modified content back into request?

Also, I don't want to do this in PerlResponseHandler as I want requested resource to handle response generation part.

Any help will be appreciated.

Thanks.

Solution

if you add use Apache2::RequestIO and from my ($r) = @_; you can do a $r->print();

a PerlResponseHandler can not modify request data, but even if it could what would be the point. Only a PerlInputFilterHandler can do that as it filters input before it gets to a response.

The only thing after a response handler is the Output Filters, Log Handler, and the Cleanup Handler.

package MyFilter;

use strict;

use base qw(Apache::Filter);
use Apache2::Const qw(OK);

sub handler: FilterRequestHandler {
  my ($f) = @_;
  while($f->read(my $buf, 1024)) {
    # do something with $buf
    $f->print($buf);
  }
  return OK;
}

1;

Important to know, that you will get data in chunks. When you read you may or may not get the whole posted in a single call.