Changes have been made in Git for this ticket:

Bug #9972: Fix viewing linked attachments

  4 files changed, 12 insertions(+), 5 deletions(-)
http://git.horde.org/horde-git/-/commit/a874ce8a6ee5dfe27dd871fbea5508a0ff9d7c9b

Hello,

There is a problem with H4 and linked attachment.

This is not fixed en GIT version:
http://git.horde.org/co.php/imp/attachment.php?rt=horde-git&ws=1&r=8cc572d2fc648758a682d4a19742c50bcb36e62e

The link sent is http://address/imp/attachment.php?u=mail&t=timestamp&f=file

(i can confirm it with imp/lib/Compose.php file: 
http://git.horde.org/co.php/imp/lib/Compose.php?rt=horde-git&ws=1&r=22d8cbacb6182e2c36745e794696340337e2d93f lines 
2449->2463)

and the expected is user_name=mail&time_stamp=timestamp&filename=file




Solution could be:

imp/attachment.php (add lines between line 30 and line 31)
$vars->mail_user = $vars->u;
$vars->time_stamp = $vars->t;
$vars->file_name = $vars->f;

also there is a bug in line 31:
if (!$vars->mail_user || !$vars->$time_stamp || !$vars->file_name) {

$vars->time_stamp instead of $vars->$time_stamp




Furthermore, there is a problem sending a mail when attachment is downloaded

Solution could be:

imp/attachment.php
Change line 107: $msg->send($mail_address, $msg_headers);
with line: $msg->send($mail_address, $msg_headers, 
$GLOBALS['injector']->getInstance('IMP_Mail'));