Re: [exim] Empty variable expansion in header

2021-04-04 Thread Leonhardt,Christian via Exim-users 
On 2021-04-02 10:55, Jeremy Harris wrote:
> I suggest appending to your variable in the MIME ACL, generating a
> list of dodgy file names seen.  Then if non-empty in the DATA ACL, add the 
> header
> there (once).

Hi Jeremy,

thank you for pointing me in this direction.
With
---
set acl_m_block1= $mime_filename $acl_m_block1
---
and a conditional add_header during the DATA ACL it is working now.
---
X-Test-Suspicious: test.xls test.ppt test.leotest
---
Greetings
Leo

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Re: [exim] Empty variable expansion in header

2021-04-02 Thread Jeremy Harris via Exim-users 

On 01/04/2021 21:55, Leonhardt,Christian via Exim-users wrote:

---
2021-04-01 22:15:27 1lS3ix-0008Rl-IC LEO: We found an extension (test.ppt) that 
we dont trust. Setting acl_m_block1 for later processing
2021-04-01 22:15:27 1lS3ix-0008Rl-IC LEO: We found an extension (test.leotest) 
that we dont trust. Setting acl_m_block1 for later processing
2021-04-01 22:15:27 1lS3ix-0008Rl-IC LEO: We found an extension (test.xls) that 
we dont trust. Setting acl_m_block1 for later processing
---

But in the MUA mailbox one occurrence is always missing in the header.

---
X-Test-Suspicious:
X-Test-Suspicious: test.ppt
X-Test-Suspicious: test.leotest
---

Sending just one suspicious attachment always results in an empty 
"X-Test-Suspicious:"
What am I doing wrong here?


Trying to add the same header multiple times.  Per the ACL docs chapter,
section 24:

"Further header lines may be accumulated during the DATA and MIME ACLs,
after which they are added to the message, again with duplicates suppressed".

- so you've probably found a bug too; that deduplication isn't working right.
  Please raise a bug for that.

I suggest appending to your variable in the MIME ACL, generating a
list of dodgy file names seen.  Then if non-empty in the DATA ACL, add the 
header
there (once).
--
Cheers,
  Jeremy

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