upload ... new feature

upload ... new feature

[Hans Hagen via ntg-context]

Hi,

This time the lmtx upload has a (for some maybe) interesting new 
features: runtime pdf encryption.

context
    --ownerpassword=foo
   [--userpassword=bar]
   [--permissions="see context --help --expert"]

One can also use the document banner line, like:

% ownerpassword="foo" userpassword="" permissions="print,extract,quality"

Now, this is a feature that relies on the viewer to deal properly with 
it as we only support the not depricated method (why bother with the old 
stuff).

acrobat  : it took some effort (and trial and error) to make that one 
happy but it seems to work ok

summatra : the one i use, it works ok in the latest greatest (i use 
3.3.13418)

mutool   : okay but sometimes with a warning (i have a workearound but 
not enabled it because i consider it to be a bug)

qpdf     : happy but check gives a permissions warning (understandable 
as that is a real mess)

firefox  : opens ok in the latest version (pdf.js)

chrome   : can't handle the revision level we use (the rest is 
depricated so i consider it a lack of feature for now)

edge     : idem

okular   : my (windows) version is too old

xpdf     : not up to it yet

foxit    : (i never use it, but tried ... it's code seems to be what is 
used in chrome) doesn't work with this revision

I would be surprised if the native apple viewer works but I can't test that.

Given earlier pdf threads, I wanna check with Michal Vlasák what can be 
improved.

Performance is okay, the luametatex manual takes 1% more runtime and 
that's within the runtime measurement margin that I use. I didn't test 
with external images yet but will do that so don't expection yet. It 
will probably take a few months to reach a stable state anyway. (But ... 
afaiks tikz pdf generation, which is also somewhat alien to context, 
seems to work).

Hopefully I didn't mess up the unrelated code,

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
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Re: upload ... new feature

[Taco Hoekwater via ntg-context]

> On 10 Dec 2021, at 11:46, Hans Hagen via ntg-context <ntg-context@ntg.nl> wrote:
> 
> Hi,
> 
> This time the lmtx upload has a (for some maybe) interesting new features: runtime pdf encryption.
> 
> 
> I would be surprised if the native apple viewer works but I can't test that.

Apple Preview works without any problems, with a quick test.

It forces a popup dialog for “user password” on opening when that is set, and with 

  context .. --permissions="-print”

it shows an "owner password" dialog before allowing to print

— 
Taco Hoekwater              E: taco@bittext.nl
genderfluid (all pronouns)



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Re: upload ... new feature

[Pablo Rodriguez via ntg-context]

On 12/10/21 11:46 AM, Hans Hagen via ntg-context wrote:
> Hi,
>
> This time the lmtx upload has a (for some maybe) interesting new
> features: runtime pdf encryption.
>
> context
>     --ownerpassword=foo
>    [--userpassword=bar]
>    [--permissions="see context --help --expert"]

Many thanks for the new feature, Hans.

I’m afraid I’m not getting anything different.

Here is the source:

  \nopdfcompression
  \starttext
  \null
  \stoptext

"context --purgeall --userpassword=foo a" outputs
https://pdf.ousia.tk/enc.pdf.

"context --purgeall a" outputs https://pdf.ousia.tk/non-enc.pdf.

MuPDF-GL version 1.19 shows no encryption at all.

I wonder whether there has been an LMTX update or something else that
I’m missing (Linux64).

Many thanks for your help,

Pablo
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___________________________________________________________________________________

Re: upload ... new feature

[Hans Hagen via ntg-context]

On 12/10/2021 6:04 PM, Pablo Rodriguez via ntg-context wrote:
> On 12/10/21 11:46 AM, Hans Hagen via ntg-context wrote:
>> Hi,
>>
>> This time the lmtx upload has a (for some maybe) interesting new
>> features: runtime pdf encryption.
>>
>> context
>>      --ownerpassword=foo
>>     [--userpassword=bar]
>>     [--permissions="see context --help --expert"]
> 
> Many thanks for the new feature, Hans.
> 
> I’m afraid I’m not getting anything different.
> 
> Here is the source:
> 
>    \nopdfcompression
>    \starttext
>    \null
>    \stoptext
> 
> "context --purgeall --userpassword=foo a" outputs
> https://pdf.ousia.tk/enc.pdf.
> 
> "context --purgeall a" outputs https://pdf.ousia.tk/non-enc.pdf.
> 
> MuPDF-GL version 1.19 shows no encryption at all.
> 
> I wonder whether there has been an LMTX update or something else that
> I’m missing (Linux64).
> 
> Many thanks for your help,
ownerpassword is mandate

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
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___________________________________________________________________________________

Re: upload ... new feature

[Pablo Rodriguez via ntg-context]

On 12/10/21 6:37 PM, Hans Hagen via ntg-context wrote:
> On 12/10/2021 6:04 PM, Pablo Rodriguez via ntg-context wrote:
>> [...]
>> I’m afraid I’m not getting anything different.
>> [...]
>> I wonder whether there has been an LMTX update or something else that
>> I’m missing (Linux64).
>
> ownerpassword is mandate.

Everything is clear now and it works as expected.

Many thanks for your help,

Pablo


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