Hello,

> On 18 Nov 2021, at 12:03, Leo Hofmann <hofmann(a)leo-andres.de> wrote:
> 
> Hi,
> 
> It is possible to refresh the log output frequently without reloading the entire page, by using Javascript/Ajax:
> https://www.w3schools.com/js/js_ajax_intro.asp
> 
> I'm pretty sure we could create a nice log output with Javascript. If you like, I can try to implement this :)

Generally I am absolutely for this, because this would much nicer. The ultimate solution would be use web sockets and have the log streamed to the browser without any polling.

However, I am not sure whether this is the biggest priority right now. Depending on how much work this is and if we can “fit it in” I wouldn’t object.

-Michael

> 
> Best regards,
> Leo
> 
> Am 16.11.2021 um 19:36 schrieb Stefan Schantl:
>> Hello Bernhard,
>> 
>> thanks for pointing this out.
>> 
>> The "page refresh" is defined and performed by the following line:
>> 
>>>> &Header::openbox( 'Waiting', 1, "<meta http-equiv='refresh'
>> content='10;'>" ); <<
>> 
>> This kind of refresh logic is untouched and worked well since many
>> years. The "http-equiv" tells the browser to do a refresh of the page
>> and the content contains the amount in seconds to wait. (See more
>> here: https://www.w3schools.com/tags/att_meta_http_equiv.asp)
>> 
>> I didn't noticed any problems with Firefox as browser on various
>> linux distros.
>> 
>> A very easy test would be to decrease the time interval (minimum is
>> "1") to force more periodic page reloads and check if the log output go
>> further.
>> 
>> If everything works well we may need to think about a new interval
>> value because 10 seconds nowadays may be to long for the high speed
>> hardware out there.
>> 
>> Best regards,
>> 
>> -Stefan
>>> Hello Stefan,
>>> 
>>> the logs are only displayed once ( the last 20 lines ).
>>> The aim of the change was a refreshing of this log to show the
>>> progress
>>> of the pakfire function, if I remember right.
>>> I tried to implement this, but with no success. :(
>>> 
>>> - Bernhard
>>> 
>>> Am 16.11.2021 um 05:47 schrieb Stefan Schantl:
>>>> Hello Bernhard,
>>>> 
>>>> thanks for testing and your feedback.
>>>>> Reviewed-by: Bernhard Bitsch <bbitsch(a)ipfire.org>
>>>>> Tested-by: Bernhard Bitsch <bbitsch(a)ipfire.org>
>>>>> 
>>>>> Okay, the old behaviour is reinstalled. Remains the problem with
>>>>> the
>>>>> page reload.
>>>> I'm sorry I do not exactly understand which problem do you mean
>>>> here -
>>>> please provide some more details.
>>>> 
>>>> A big thanks in advance,
>>>> 
>>>> -Stefan
>>>> 
>>>>> Am 15.11.2021 um 21:23 schrieb Stefan Schantl:
>>>>>> Trying to get rid of the system backpipe check if a pakfire is
>>>>>> running
>>>>>> does not work very well. It simply makes the code more complex
>>>>>> and
>>>>>> only introduced some new problems.
>>>>>> 
>>>>>> This commit switches back to the old logic which worked well in
>>>>>> the
>>>>>> past.
>>>>>> 
>>>>>> Signed-off-by: Stefan Schantl <stefan.schantl(a)ipfire.org>
>>>>>> ---
>>>>>>    html/cgi-bin/pakfire.cgi | 57 +++++++-----------------------
>>>>>> -----
>>>>>> -----
>>>>>>    1 file changed, 10 insertions(+), 47 deletions(-)
>>>>>> 
>>>>>> diff --git a/html/cgi-bin/pakfire.cgi b/html/cgi-
>>>>>> bin/pakfire.cgi
>>>>>> index f2381f031..4d6eee284 100644
>>>>>> --- a/html/cgi-bin/pakfire.cgi
>>>>>> +++ b/html/cgi-bin/pakfire.cgi
>>>>>> @@ -44,8 +44,6 @@ $cgiparams{'VALID'} = '';
>>>>>>    $cgiparams{'INSPAKS'} = '';
>>>>>>    $cgiparams{'DELPAKS'} = '';
>>>>>>    -my $page_lock;
>>>>>> -
>>>>>>    sub refreshpage{&Header::openbox( 'Waiting', 1, "<meta http-
>>>>>> equiv='refresh' content='1;'>" );print "<center><img
>>>>>> src='/images/clock.gif' alt='' /><br/><font
>>>>>> color='red'>$Lang::tr{'pagerefresh'}</font></center>";&Header::
>>>>>> clos
>>>>>> ebox();}
>>>>>>        &Header::getcgihash(\%cgiparams);
>>>>>> @@ -59,9 +57,8 @@ sub refreshpage{&Header::openbox( 'Waiting',
>>>>>> 1,
>>>>>> "<meta http-equiv='refresh' cont
>>>>>>    if (($cgiparams{'ACTION'} eq 'install') && (! -e
>>>>>> $Pakfire::lockfile)) {
>>>>>>          my @pkgs = split(/\|/, $cgiparams{'INSPAKS'});
>>>>>>          if ("$cgiparams{'FORCE'}" eq "on") {
>>>>>> -               # Lock the page.
>>>>>> -               $page_lock = "1";
>>>>>>                  &General::system_background("/usr/local/bin/pa
>>>>>> kfire
>>>>>> ", "install", "--non-interactive", "--no-colors", @pkgs);
>>>>>> +               sleep(1);
>>>>>>          } else {
>>>>>>                  &Header::openbox("100%", "center",
>>>>>> $Lang::tr{'request'});
>>>>>>                  my @output =
>>>>>> &General::system_output("/usr/local/bin/pakfire",
>>>>>> "resolvedeps", "-
>>>>>> -no-colors", @pkgs);
>>>>>> @@ -98,9 +95,8 @@ END
>>>>>>    } elsif (($cgiparams{'ACTION'} eq 'remove') && (! -e
>>>>>> $Pakfire::lockfile)) {
>>>>>>          my @pkgs = split(/\|/, $cgiparams{'DELPAKS'});
>>>>>>          if ("$cgiparams{'FORCE'}" eq "on") {
>>>>>> -               # Lock the page.
>>>>>> -               $page_lock = "1";
>>>>>>                  &General::system_background("/usr/local/bin/pa
>>>>>> kfire
>>>>>> ", "remove", "--non-interactive", "--no-colors", @pkgs);
>>>>>> +               sleep(1);
>>>>>>          } else {
>>>>>>                  &Header::openbox("100%", "center",
>>>>>> $Lang::tr{'request'});
>>>>>>                  my @output =
>>>>>> &General::system_output("/usr/local/bin/pakfire",
>>>>>> "resolvedeps", "-
>>>>>> -no-colors", @pkgs);
>>>>>> @@ -136,13 +132,11 @@ END
>>>>>>          }
>>>>>>        } elsif (($cgiparams{'ACTION'} eq 'update') && (! -e
>>>>>> $Pakfire::lockfile)) {
>>>>>> -       # Set variable to lock the page.
>>>>>> -       $page_lock = "1";
>>>>>>          &General::system_background("/usr/local/bin/pakfire",
>>>>>> "update", "--force", "--no-colors");
>>>>>> +       sleep(1);
>>>>>>    } elsif (($cgiparams{'ACTION'} eq 'upgrade') && (!-e
>>>>>> $Pakfire::lockfile)) {
>>>>>> -       # Lock the page.
>>>>>> -       $page_lock = "1";
>>>>>>          &General::system_background("/usr/local/bin/pakfire",
>>>>>> "upgrade", "-y", "--no-colors");
>>>>>> +       sleep(1);
>>>>>>    } elsif ($cgiparams{'ACTION'} eq "$Lang::tr{'save'}") {
>>>>>>          $pakfiresettings{"TREE"} = $cgiparams{"TREE"};
>>>>>>    @@ -156,6 +150,7 @@ END
>>>>>>                      # Update lists
>>>>>>                  &General::system_background("/usr/local/bin/pa
>>>>>> kfire
>>>>>> ", "update", "--force", "--no-colors");
>>>>>> +               sleep(1);
>>>>>>          }
>>>>>>    }
>>>>>>    @@ -177,44 +172,12 @@ if ($errormessage) {
>>>>>>          &Header::closebox();
>>>>>>    }
>>>>>>    -# Check if a page lock is required.
>>>>>> -if ($page_lock) {
>>>>>> -       &Header::openbox('Waiting', 1, ,);
>>>>>> -               print <<END;
>>>>>> -               <table>
>>>>>> -                       <tr>
>>>>>> -                               <td>
>>>>>> -                                       <img
>>>>>> src='/images/indicator.gif' alt='$Lang::tr{'active'}'
>>>>>> title='$Lang::tr{'active'}'>
>>>>>> -                               </td>
>>>>>> -
>>>>>> -                               <td>
>>>>>> -                                       $Lang::tr{'pakfire
>>>>>> working'}
>>>>>> -                               </td>
>>>>>> -                       </tr>
>>>>>> -               </table>
>>>>>> -END
>>>>>> -       &Header::closebox();
>>>>>> -
>>>>>> -       # Infinite loop to lock the page until pakfire lockfile
>>>>>> is
>>>>>> present.
>>>>>> -       while($page_lock) {
>>>>>> -               unless (-e $Pakfire::lockfile) {
>>>>>> -                       sleep(1);
>>>>>> -               } else {
>>>>>> -                       # Release page lock.
>>>>>> -                       undef($page_lock);
>>>>>> -
>>>>>> -                       # Break loop.
>>>>>> -                       last;
>>>>>> -               }
>>>>>> -       }
>>>>>> -
>>>>>> -       # Perform page reload.
>>>>>> -       print "<meta http-equiv='refresh' content='1;'>\n";
>>>>>> -       exit;
>>>>>> -}
>>>>>> +# Check if pakfire is already running.
>>>>>> +#
>>>>>> +# The system backpipe command is safe, because no user input
>>>>>> is
>>>>>> computed.
>>>>>> +my $pid = `pidof pakfire`;
>>>>>>    -# Check if pakfire is already running. In this case a lockfile
>>>>>> is
>>>>>> present.
>>>>>> -if (-e $Pakfire::lockfile) {
>>>>>> +if ($pid) {
>>>>>>          &Header::openbox( 'Waiting', 1, "<meta http-
>>>>>> equiv='refresh'
>>>>>> content='10;'>" );
>>>>>>          print <<END;
>>>>>>          <table>
>>>>>>