On Sat, Oct 08, 2022 at 12:06:52PM +0200, Jan Eden via Mutt-users wrote:
> On 2022-10-08 09:34, Chris Green wrote:
> > On Sat, Oct 08, 2022 at 10:25:29AM +0200, Jan Eden via Mutt-users wrote:
> > > Hi,
> > >
> > > I recently configured mutt on a Linux system, and cannot display HTML
> > > messages in the default browser. mailcap contains the following lines:
> > >
> > > text/html; open %s;
> > > text/html; w3m -I %{charset} -T text/html; copiousoutput
> > > application/pdf; open %s; copiousoutput
> > >
> > > w3m is used automatically (auto_view text/html), and PDF documents are
> > > opened correctly in evince.
> > >
> > > But when I try to open an HTML message manually, Firefox displays either
> > > a permission denied error (with AppArmor enabled), or a file not found
> > > error – both pointing to the message's filename.
> > >
> > > How can I allow Firefox to access and display the message?
> > >
> > I no longer use Firefox on my xubuntu system (I've moved to Vivaldi)
> > but I seem to remember that Firefox's security paranoia means that you
> > now have to explicitly configure to allow access to files on the local
> > system.
>
> With AppArmor disabled, Firefox tries to display the message, but cannot
> find the message file in /var/tmp/ – %s seems to point to that
> directory.
>
> In Firefox' settings, I did not find any parameter to keep the browser
> from accessing local files.
>
> > By 'manually' I presume you mean v[iew] the message parts and then
> > m[view-mailcap] the html.
>
> Yes.
>
When I view an HTML message like this the address is like:-
file:///srv/mutt/mutt-esprimo-1000-151542-10027422769961820949.html
I use a script (called via mailcap) to store the HTML message in that
directory.
So, in mailcap I have:-
text/html; /home/chris/bin/muttview %s html
... and muttview is:-
!/bin/bash
#
#
# muttview: script called by mutt via mailcap to view attachments
# and HTML e-mail (where lynx isn't good enough).
#
# The temporary file to be viewed is copied to directory
# /srv/mutt on esprimo if running locally or to the same place on the
# remote system if running via ssh. The copy to the remote system is
# done using rsync to an rsync daemon on t470 via a reverse tunnel
# set up when the ssh connection is made.
#
dir=/srv/mutt
fn=$1
if [ "$2" == "html" ]
then
mv $fn $fn.html
fn=$fn.html
fi
#
#
# if there's no DISPLAY variable then the viewer can't run, so skip the
whole thing
#
if [ -n "$DISPLAY" ]
then
if [ -n "$SSH_CLIENT" ]; then
#
#
# view on t470, files dropped into /srv/mutt there are
automatically displayed
#
export RSYNC_PASSWORD=brzmi
rsync $fn rsync://chris@localhost:50873/tv/$(basename $fn)
else
#
#
# running locally, copy to /srv/mutt and then select viewer on file
type
#
dest=$dir/$(basename $fn)
cp $fn $dest
shopt -s nocasematch
case $fn in
*.html)
$BROWSER file://$dest
;;
*.pdf)
atril $dest &
;;
*)
nomacs $dest >/dev/null 2>&1 &
;;
esac
fi
fi
#
#
# Clear out any old files left on esprimo by this script, doing it here
# saves adding a special crontab task (but a crontab task is needed on t470)
#
find $dir -mtime +7 -exec rm {} \;
You don't need the bit for remote viewing from my laptop, just the "running
locally"
bit.
--
Chris Green
