---
name: "Mail::MIMEDefang::Utils"
section: "3"
platform: "linux"
package: "mimedefang"
version: "3.6-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Mail::MIMEDefang::Utils"
---

# Mail::MIMEDefang::Utils(3)

Support methods used internally or by email filters

## NAME

Mail::MIMEDefang::Utils - Support methods used internally or by email filters

## DESCRIPTION

Mail::MIMEDefang::Utils are a set of methods that can be called from *mimedefang-filter* or by other methods.

## METHODS

- time\_str

  Method that returns a string representing the current time.

- hour\_str

  Method that returns a string representing the current hour.

- synthesize\_received\_header

  Method that synthesizes a valid Received: header to reflect re-mailing. Needed by Apache SpamAssassin to correctly parse email messages.

- copy\_or\_link

  Method that copies a file if it fails to create an hard link to the original file.

- read\_results

  Method that extracts an array of command, key, values from RESULTS file, needed for regression tests.

- re\_match

  Method that returns 1 if either Content-Disposition.filename or Content-Type.name matches the regexp; 0 otherwise.

- re\_match\_ext

  Method that returns 1 if the EXTENSION part of either Content-Disposition.filename or Content-Type.name matches regexp; 0 otherwise.

- re\_match\_in\_rar\_directory

  Method that returns 1 if the EXTENSION part of any file in the rar archive matches regexp. To enable the check `$Features`{'unrar'} should be enabled.

- re\_match\_in\_7zip\_directory

  Method that returns 1 if the EXTENSION part of any file in the 7zip archive matches regexp. To enable the check `$Features`{'7zip'} should be enabled.

- re\_match\_in\_tgz\_directory

  Method that returns 1 if the EXTENSION part of any file in the tgz archive matches regexp. To enable the check `$Features`{'tar'} should be enabled.

- re\_match\_in\_zip\_directory

  Method that returns 1 if the EXTENSION part of any file in the zip archive matches regexp.

- md\_copy\_orig\_msg\_to\_work\_dir\_as\_mbox\_file

  Method that copies original INPUTMSG file into work directory for virus-scanning as a valid mbox file.

- gen\_mx\_id

  Method that generates a random indentifier used by MIMEDefang to create temporary files.