[Sugar-devel] Web activities on XO-4
James Cameron
quozl at laptop.org
Thu Sep 19 18:46:21 EDT 2013
I just love sockets.
But that seems wrong to me; to open a socket to get a port number and
then shut it down. Presumably later code would open another socket
and bind it to the port?
If you truly need to do it that way, there's one more thing to add
before the call to bind():
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
This is so that the same port number can be re-used shortly
afterwards. Otherwise the later code would see an address in use
error.
On Thu, Sep 19, 2013 at 08:56:31AM -0300, Gonzalo Odiard wrote:
> A free port can be get using:
>
> # Get a free socket
> sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0)
> sock.bind(('', 0))
> sock.listen(socket.SOMAXCONN)
> _ipaddr, self.port = sock.getsockname()
> sock.shutdown(socket.SHUT_RDWR)
> logging.error('Using port %d', self.port)
>
> Should be good use 0.0.0.0 as ip instead of localhost, to avoid [1]
> To serve the files python already have HTTPServer.
>
> Gonzalo
>
> [1] http://dev.laptop.org/ticket/12479
>
>
> On Wed, Sep 18, 2013 at 9:39 PM, Daniel Narvaez <dwnarvaez at gmail.com> wrote:
>
> Just a directory. It needs to be one server per activity though, so that
> the different port gives us a different origin.
>
>
> On 18 September 2013 23:32, Gonzalo Odiard <gonzalo at laptop.org> wrote:
>
> Ok. Thanks.
> The web server need have something special or just serve a directory is
> enough?
>
> Gonzalo
>
>
> On Wed, Sep 18, 2013 at 6:22 PM, Daniel Narvaez <dwnarvaez at gmail.com>
> wrote:
>
> Well, there are several html features which depend on each activity
> having their own origin, for example local storage.
>
>
> On Wednesday, 18 September 2013, Gonzalo Odiard wrote:
>
> No, why is needed use a local web server instead of
> the use of the proposed solution (use '
> enable-file-access-from-file-uris' )
>
> Gonzalo
>
>
> On Wed, Sep 18, 2013 at 6:06 PM, Daniel Narvaez <
> dwnarvaez at gmail.com> wrote:
>
> You mean why the http server would be a problem?
>
>
> On Wednesday, 18 September 2013, Gonzalo Odiard wrote:
>
> This is for the potential security risk of opening
> files outside of the activity directory,
> or because can be a problem with different activities
> running at the same time
> or multiple instances of the same activity?
>
> Gonzalo
>
>
> On Wed, Sep 18, 2013 at 5:46 PM, Daniel Narvaez <
> dwnarvaez at gmail.com> wrote:
>
> You could put an http server in the activity...
> Sucks but I'm not sure there is a better way :/
>
>
> On Wednesday, 18 September 2013, Manuel Quiñones
> wrote:
>
> I finally got web activities working on XO-4,
> in the AU build
> published yesterday [1] . I did it by
> modifying webactivities.py to
> use WebKitGTK1 instead of v2. The changes are:
>
> https://github.com/manuq/sugar-toolkit-gtk3-1/
> compare/webacts-webkit1
>
> I tried it with Gears Activity v3, and is
> working. It stores the data
> and the metadata. So it is communicating with
> the shell just fine.
>
> The touchscreen is not responding very well, at
> least in this
> activity. I can tap buttons, but I can barely
> drag to move a gear or
> to draw one. The dragging seems to be
> cancelled in the middle of the
> action. Mouse input works fine.
>
> Also as expected, the icons look small in the
> XO screen because I need
> to adapt the theme. But that is an easy one,
> just changing the
> CEL_SIZE variable in the LESS file to create
> another CSS for the XO
> screen DPI, and adding a CSS media query
> selector to the HTML. I'll
> provide a patch to sugar-web-template and will
> update my web
> activities.
>
> The inspector is not working, it does not
> display. It shoud display
> by Ctrl+Shift+I or by right-click -> "Inspect
> element". There is no
> error in the logs and the API is there [2], but
> nothing is happening.
> Surprisingly, JavaScript console logs go to the
> activity log. We are
> missing that in master.
>
> I managed to keep the activity:// scheme that
> we need for the
> same-origin policy, but I still had to add the
> setting
> 'enable-file-access-from-file-uris' to
> workaround the cross-site
> requests. I can't find a way to register the
> URI scheme in WK1, so I
> added a big FIXME.
>
> [1] http://build.laptop.org.au/xo/os/sugar-100/
> build-21/
> [2] http://webkitgtk.org/reference/webkitgtk/
> stable/WebKitWebInspector.html
>
>
> --
> .. manuq ..
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>
>
> --
> Daniel Narvaez
>
>
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>
>
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>
> --
> Daniel Narvaez
>
>
>
>
>
>
> --
> Daniel Narvaez
>
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>
>
>
>
>
> --
> Daniel Narvaez
>
>
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--
James Cameron
http://quozl.linux.org.au/
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