Re: Bug#934082: elpa-notmuch: Shows remote images even when requested not to

Re: Bug#934082: elpa-notmuch: Shows remote images even when requested not to

[David Bremner]

[-- Attachment #1: Type: text/plain, Size: 1386 bytes --]

Andreas Kloeckner <inform@tiker.net> writes:

> Package: elpa-notmuch
> Version: 0.29.1-2
> Severity: normal
>
> Dear Maintainer,
>
> With the specified version of the package, and emacs of the following
> version:
>
> Versions of packages emacs25 depends on:
> ii  emacs-gtk  1:26.1+1-3.2
>
> when I view the message given in this file:
>
> https://ssl.tiker.net/nextcloud/index.php/s/QyBrSP6Etn8rmGn
>
> notmuch requests and shows remote images (in this case, the Facebook and
> Twitter icons) even despite the fact that I have the following
> 'customize' setting active:
>
> Hide Notmuch Show Text/Html Blocked Images: Value Menu Regexp: .*
>     State : SAVED and set.
>    Remote images that have URLs matching this regexp will be blocked.
>
> which I understand as "no remote images should ever be loaded".
>
> I'd be much obliged for any help. Thanks!
>
> Andreas
>

Your interpretation of that variable sounds about right (fwiw, '.'
should work as well as '.*'). On the other hand when I view that message
with the default settings I don't see any images. You can duplicate my
experiment with

1) emacs -q
2) M-x package-initialize
3) M-x notmuch

s subject:galerkin<return>

I suspect the outcome depends on the setting of html viewer, but please
let us know what you discover.

All the best,

David

P.S. In case the URL is not durable, I'm attaching the message in question


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Subject: intitle:"discontinuous galerkin" - new results
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<!doctype html><html xmlns=3D"http://www.w3.org/1999/xhtml" xmlns:o=3D"urn:=
schemas-microsoft-com:office:office"><head><!--[if gte mso 9]><xml><o:Offic=
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;}}</style></head><body><!--[if gte mso 9]><table cellpadding=3D"0" cellspa=
cing=3D"0" border=3D"0"><tr><td style=3D"width:600px"><![endif]--><div styl=
e=3D"font-family:arial,sans-serif;font-size:13px;line-height:16px;color:#22=
2;width:100%;max-width:600px"><h3 style=3D"font-weight:normal;margin:0;font=
-size:17px;line-height:20px;"><a href=3D"http://scholar.google.com/scholar_=
url?url=3Dhttps://www.sciencedirect.com/science/article/pii/S03770427193034=
37&amp;hl=3Den&amp;sa=3DX&amp;d=3D9222642871868013544&amp;scisig=3DAAGBfm3I=
Hl7UyTjMHOY7Seac24wm8mu8pA&amp;nossl=3D1&amp;oi=3Dscholaralrt&amp;hist=3Dy9=
_vR9YAAAAJ:17743408003912531268:AAGBfm2ie58E1eRXxYl0R6E3nn-dlaashg" class=
=3D"gse_alrt_title" style=3D"font-size:17px;color:#1a0dab">Multiscale hybri=
dizable <b>discontinuous Galerkin </b>method for elliptic problems in perfo=
rated domains</a></h3><div style=3D"color:#006621">K Cho, M Moon=C2=A0- Jou=
rnal of Computational and Applied Mathematics, 2019</div><div class=3D"gse_=
alrt_sni">We propose a multiscale hybridizable <b>discontinuous Galerkin </=
b>method in perforated <br>domains. Perforations may have various shapes an=
d sizes. Following Generalized <br>Multiscale Finite Element method, local =
snapshot spaces are constructed by solving=C2=A0=E2=80=A6</div><div style=
=3D"width:auto"><table cellpadding=3D"0" cellspacing=3D"0" border=3D"0"><tb=
ody><tr><td style=3D"padding-right:4px;mso-padding-alt:4px 16px 0 0;"><a hr=
ef=3D"http://scholar.google.com/scholar_share?hl=3Den&amp;oi=3Dscholaralrt&=
amp;ss=3Dtw&amp;url=3Dhttps://www.sciencedirect.com/science/article/pii/S03=
77042719303437&amp;rt=3DMultiscale+hybridizable+discontinuous+Galerkin+meth=
od+for+elliptic+problems+in+perforated+domains&amp;scisig=3DAAGBfm1Yr4oAKEp=
lXHH2AY3o-pEGMsnV8g" style=3D"text-decoration:none;display:inline-block;pad=
ding:4px 8px 4px 0;mso-padding-alt:0;"><img alt=3D"Twitter" src=3D"http://s=
cholar.google.com/intl/en/scholar/images/1x/tw-32.png" border=3D"0" height=
=3D"16" width=3D"16" style=3D"vertical-align:top"></a></td><td style=3D"pad=
ding-right:4px;mso-padding-alt:4px 16px 0 0;"><a href=3D"http://scholar.goo=
gle.com/scholar_share?hl=3Den&amp;oi=3Dscholaralrt&amp;ss=3Dfb&amp;url=3Dht=
tps://www.sciencedirect.com/science/article/pii/S0377042719303437&amp;rt=3D=
Multiscale+hybridizable+discontinuous+Galerkin+method+for+elliptic+problems=
+in+perforated+domains&amp;scisig=3DAAGBfm1Yr4oAKEplXHH2AY3o-pEGMsnV8g" sty=
le=3D"text-decoration:none;display:inline-block;padding:4px 8px;mso-padding=
-alt:0"><img alt=3D"Facebook" src=3D"http://scholar.google.com/intl/en/scho=
lar/images/1x/fb-32.png" border=3D"0" height=3D"16" width=3D"16" style=3D"v=
ertical-align:top"></a></td></tr></tbody></table></div><br><h3 style=3D"fon=
t-weight:normal;margin:0;font-size:17px;line-height:20px;"><a href=3D"http:=
//scholar.google.com/scholar_url?url=3Dhttp://congress.cimne.com/iga2019/ad=
min/files/fileabstract/a214.pdf&amp;hl=3Den&amp;sa=3DX&amp;d=3D153370534435=
86414985&amp;scisig=3DAAGBfm3D_15tBDGWfEKhIFgTbHikCr1JBw&amp;nossl=3D1&amp;=
oi=3Dscholaralrt&amp;hist=3Dy9_vR9YAAAAJ:17743408003912531268:AAGBfm2ie58E1=
eRXxYl0R6E3nn-dlaashg" class=3D"gse_alrt_title" style=3D"font-size:17px;col=
or:#1a0dab">An Arbitrary Lagrangian Eulerian Formulation for Isogeometric <=
b>Discontinuous Galerkin </b>Schemes</a></h3><div style=3D"color:#006621">S=
 Pezzano, R Duvigneau</div><div class=3D"gse_alrt_sni">In this work the Iso=
geometric <b>Discontinuous Galerkin </b>[1] method for solving <br>hyperbol=
ic conservation laws is extended to time dependent geometries using an <br>=
Arbitrary Lagrangian Eulerian (ALE) approach. Among the various ALE formula=
tions=C2=A0=E2=80=A6</div><div style=3D"width:auto"><table cellpadding=3D"0=
" cellspacing=3D"0" border=3D"0"><tbody><tr><td style=3D"padding-right:4px;=
mso-padding-alt:4px 16px 0 0;"><a href=3D"http://scholar.google.com/scholar=
_share?hl=3Den&amp;oi=3Dscholaralrt&amp;ss=3Dtw&amp;url=3Dhttp://congress.c=
imne.com/iga2019/admin/files/fileabstract/a214.pdf&amp;rt=3DAn+Arbitrary+La=
grangian+Eulerian+Formulation+for+Isogeometric+Discontinuous+Galerkin+Schem=
es&amp;scisig=3DAAGBfm23nT1WVM4DidjuNf53fW60y00lmw" style=3D"text-decoratio=
n:none;display:inline-block;padding:4px 8px 4px 0;mso-padding-alt:0;"><img =
alt=3D"Twitter" src=3D"http://scholar.google.com/intl/en/scholar/images/1x/=
tw-32.png" border=3D"0" height=3D"16" width=3D"16" style=3D"vertical-align:=
top"></a></td><td style=3D"padding-right:4px;mso-padding-alt:4px 16px 0 0;"=
><a href=3D"http://scholar.google.com/scholar_share?hl=3Den&amp;oi=3Dschola=
ralrt&amp;ss=3Dfb&amp;url=3Dhttp://congress.cimne.com/iga2019/admin/files/f=
ileabstract/a214.pdf&amp;rt=3DAn+Arbitrary+Lagrangian+Eulerian+Formulation+=
for+Isogeometric+Discontinuous+Galerkin+Schemes&amp;scisig=3DAAGBfm23nT1WVM=
4DidjuNf53fW60y00lmw" style=3D"text-decoration:none;display:inline-block;pa=
dding:4px 8px;mso-padding-alt:0"><img alt=3D"Facebook" src=3D"http://schola=
r.google.com/intl/en/scholar/images/1x/fb-32.png" border=3D"0" height=3D"16=
" width=3D"16" style=3D"vertical-align:top"></a></td></tr></tbody></table><=
/div><br><h3 style=3D"font-weight:normal;margin:0;font-size:17px;line-heigh=
t:20px;"><a href=3D"http://scholar.google.com/scholar_url?url=3Dhttp://cong=
ress.cimne.com/iga2019/admin/files/fileabstract/a197.pdf&amp;hl=3Den&amp;sa=
=3DX&amp;d=3D11420218679413567025&amp;scisig=3DAAGBfm3q_EhUxa2JRDFl6YPXctUs=
05VWqg&amp;nossl=3D1&amp;oi=3Dscholaralrt&amp;hist=3Dy9_vR9YAAAAJ:177434080=
03912531268:AAGBfm2ie58E1eRXxYl0R6E3nn-dlaashg" class=3D"gse_alrt_title" st=
yle=3D"font-size:17px;color:#1a0dab">Shape Sensitivity Analysis for Hyperbo=
lic Systems using an Isogeometric <b>Discontinuous Galerkin </b>Method</a><=
/h3><div style=3D"color:#006621">M Stauffert, R Duvigneau</div><div class=
=3D"gse_alrt_sni">The framework of this work is the Isogeometric <b>Discont=
inuous Galerkin </b>(IDG) method, <br>presented in [1], which relies on the=
 coupling of a <b>Discontinuous Galerkin </b>formulation <br>and NURBS repr=
esentations. This methodology allows to solve partial differential=C2=A0=E2=
=80=A6</div><div style=3D"width:auto"><table cellpadding=3D"0" cellspacing=
=3D"0" border=3D"0"><tbody><tr><td style=3D"padding-right:4px;mso-padding-a=
lt:4px 16px 0 0;"><a href=3D"http://scholar.google.com/scholar_share?hl=3De=
n&amp;oi=3Dscholaralrt&amp;ss=3Dtw&amp;url=3Dhttp://congress.cimne.com/iga2=
019/admin/files/fileabstract/a197.pdf&amp;rt=3DShape+Sensitivity+Analysis+f=
or+Hyperbolic+Systems+using+an+Isogeometric+Discontinuous+Galerkin+Method&a=
mp;scisig=3DAAGBfm33SjYlPgIWozgZnPQywZnZJO3lxA" style=3D"text-decoration:no=
ne;display:inline-block;padding:4px 8px 4px 0;mso-padding-alt:0;"><img alt=
=3D"Twitter" src=3D"http://scholar.google.com/intl/en/scholar/images/1x/tw-=
32.png" border=3D"0" height=3D"16" width=3D"16" style=3D"vertical-align:top=
"></a></td><td style=3D"padding-right:4px;mso-padding-alt:4px 16px 0 0;"><a=
 href=3D"http://scholar.google.com/scholar_share?hl=3Den&amp;oi=3Dscholaral=
rt&amp;ss=3Dfb&amp;url=3Dhttp://congress.cimne.com/iga2019/admin/files/file=
abstract/a197.pdf&amp;rt=3DShape+Sensitivity+Analysis+for+Hyperbolic+System=
s+using+an+Isogeometric+Discontinuous+Galerkin+Method&amp;scisig=3DAAGBfm33=
SjYlPgIWozgZnPQywZnZJO3lxA" style=3D"text-decoration:none;display:inline-bl=
ock;padding:4px 8px;mso-padding-alt:0"><img alt=3D"Facebook" src=3D"http://=
scholar.google.com/intl/en/scholar/images/1x/fb-32.png" border=3D"0" height=
=3D"16" width=3D"16" style=3D"vertical-align:top"></a></td></tr></tbody></t=
able></div><br><h3 style=3D"font-weight:normal;margin:0;font-size:17px;line=
-height:20px;"><a href=3D"http://scholar.google.com/scholar_url?url=3Dhttp:=
//congress.cimne.com/iga2019/admin/files/fileabstract/a206.pdf&amp;hl=3Den&=
amp;sa=3DX&amp;d=3D11456305957596265494&amp;scisig=3DAAGBfm0utF7FCmBU1PKa_4=
g8_-gbMI1rWg&amp;nossl=3D1&amp;oi=3Dscholaralrt&amp;hist=3Dy9_vR9YAAAAJ:177=
43408003912531268:AAGBfm2ie58E1eRXxYl0R6E3nn-dlaashg" class=3D"gse_alrt_tit=
le" style=3D"font-size:17px;color:#1a0dab">Adaptive Refinement for Compress=
ible Flow Analysis using an Isogeometric <b>Discontinuous Galerkin </b>Meth=
od</a></h3><div style=3D"color:#006621">R Duvigneau, A Jaeschke, M M=C3=B6l=
ler, M M=C3=B6ller=E2=80=A6</div><div class=3D"gse_alrt_sni">This work aims=
 at developping an efficient isogeometric approach to simulate <br>compress=
ible flows including shocks. The use of the classical isogeometric analysis=
 <br>method based on a finite-element formulation [1] is tedious in this co=
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Re: Bug#934082: elpa-notmuch: Shows remote images even when requested not to

[Andreas Kloeckner]

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Hi David,

David Bremner <david@tethera.net> writes:
> Your interpretation of that variable sounds about right (fwiw, '.'
> should work as well as '.*'). On the other hand when I view that message
> with the default settings I don't see any images. You can duplicate my
> experiment with
>
> 1) emacs -q
> 2) M-x package-initialize
> 3) M-x notmuch
>
> s subject:galerkin<return>
>
> I suspect the outcome depends on the setting of html viewer, but please
> let us know what you discover.

Thanks for getting back to me! It turns out that your idea with the HTML
viewer (`mm-text-html-renderer`) was spot-on. I had that set to 'w3m',
and reverting it to the default (`shr`) not only renders faster and more
nicely, it also removes the undesired privacy problem of fetching remote
images.

When the image loading happened, I had w3m 0.5.3-37 and w3m-el-snapshot
1.4.632+0.20190731-1 (both via Debian packages) installed.

Thank you for your help!
Andreas

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Re: Bug#934082: elpa-notmuch: Shows remote images even when requested not to

[David Bremner]

Andreas Kloeckner <inform@tiker.net> writes:

> Thanks for getting back to me! It turns out that your idea with the HTML
> viewer (`mm-text-html-renderer`) was spot-on. I had that set to 'w3m',
> and reverting it to the default (`shr`) not only renders faster and more
> nicely, it also removes the undesired privacy problem of fetching remote
> images.
>

Great.

Dear Notmuch people, should we document this issue somehow? Maybe even
try to detect it with customize?

David

Re: Bug#934082: elpa-notmuch: Shows remote images even when requested not to

[Rollins, Jameson]

On Wed, Aug 07 2019, David Bremner <david@tethera.net> wrote:
> Dear Notmuch people, should we document this issue somehow? Maybe even
> try to detect it with customize?

I would certainly appreciate some guarantee that my mail viewer was not
contacting the internet when I view mail.  I'm not sure how that could
be accomplished though, without simply auditing all the relevant
components.

jamie.

Re: Bug#934082: elpa-notmuch: Shows remote images even when requested not to

[David Bremner]

"Rollins, Jameson" <jrollins@caltech.edu> writes:

> On Wed, Aug 07 2019, David Bremner <david@tethera.net> wrote:
>> Dear Notmuch people, should we document this issue somehow? Maybe even
>> try to detect it with customize?
>
> I would certainly appreciate some guarantee that my mail viewer was not
> contacting the internet when I view mail.  I'm not sure how that could
> be accomplished though, without simply auditing all the relevant
> components.

I meant more specifically, the issue that this variable is only
effective if your html converter is the default shr

d

Re: Bug#934082: elpa-notmuch: Shows remote images even when requested not to

[Daniel Kahn Gillmor]

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On Thu 2019-08-08 09:45:06 -0300, David Bremner wrote:
> I meant more specifically, the issue that this variable is only
> effective if your html converter is the default shr

Yes, this should be clearly documented, presumably in the documentation
text about the variable.

It would be even nicer if there was some way to alert the user that they
have this set to a non-default value *and* they are not using shr, but i
haven't thought through the emacs interface well enough to understand
how one could offer such a warning in a usable, safe, non-annoying, and
actionable fashion.

     --dkg

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Re: Bug#934082: elpa-notmuch: Shows remote images even when requested not to

[Andreas Kloeckner]

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David Bremner <david@tethera.net> writes:

> Andreas Kloeckner <inform@tiker.net> writes:
>
>> Thanks for getting back to me! It turns out that your idea with the HTML
>> viewer (`mm-text-html-renderer`) was spot-on. I had that set to 'w3m',
>> and reverting it to the default (`shr`) not only renders faster and more
>> nicely, it also removes the undesired privacy problem of fetching remote
>> images.
>>
>
> Great.
>
> Dear Notmuch people, should we document this issue somehow? Maybe even
> try to detect it with customize?

One thing I wanted to emphasize is that this issue, as far as I can
tell, is a regression. I don't quite know what versions, but I do know
that previously remote content was not fetched when viewing a message.

Once again thanks for your help,
Andreas

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Re: Bug#934082: elpa-notmuch: Shows remote images even when requested not to

[Tomas Nordin]

Andreas Kloeckner <inform@tiker.net> writes:

> David Bremner <david@tethera.net> writes:
>
>> Andreas Kloeckner <inform@tiker.net> writes:
>>
>>> Thanks for getting back to me! It turns out that your idea with the HTML
>>> viewer (`mm-text-html-renderer`) was spot-on. I had that set to 'w3m',
>>> and reverting it to the default (`shr`) not only renders faster and more
>>> nicely, it also removes the undesired privacy problem of fetching remote
>>> images.
>>>
>>
>> Great.
>>
>> Dear Notmuch people, should we document this issue somehow? Maybe even
>> try to detect it with customize?
>
> One thing I wanted to emphasize is that this issue, as far as I can
> tell, is a regression. I don't quite know what versions, but I do know
> that previously remote content was not fetched when viewing a message.

I can join in that. I use w3m and it has a setting for this itself,
`w3m-default-display-inline-images`, being nil by default, meaning do
not show images. This is what I have. Still, after a rebuild of emacs I
have the same issue (as OP) when rendering html inline using notmuch,
images are downloaded and displayed.

I /think/ it started after the rebuild of emacs, but I am not 100% sure
this is the point of "regression", because I have also upgraded the w3m
package at some point. However, the not showing of images work as
expected during normal browsing of the internet with w3m.

I wonder if it is due to the w3m package or something else?

Best regards
--
Tomas

Re: Bug#934082: elpa-notmuch: Shows remote images even when requested not to

[David Bremner]

Tomas Nordin <tomasn@posteo.net> writes:

>
> I wonder if it is due to the w3m package or something else?
>

notmuch does not know anything about w3m, so I'm reasonably sure this is
not a notmuch problem aside from the doc problem I already mentioned: we
should probably say "if you don't use shr, you're on your own", in some
slightly more friendly way.