ubuntu-phone team mailing list archive

[Mike Sheldon <mike@xxxxxxxxxxxxx>]

Hi Mathjis,

 Have you added the "networking" policy group to your app armor
permissions? I'm using XHR in Podbird for fetching RSS feeds and it
works without any issues.

Cheers,
 Mike.

On Wed, 2016-02-03 at 04:32 +0100, Mathijs Veen wrote:
> hello everyone
> 
> I was working on an app that makes use of xmlhttp requests.
> xmlhttprequest (XHR) is supported in qt qml since way back when. Both
> GET and POST.  I have a working testapp that runs fine on the
> desktop. But it fails when it is deployed to my phone. It seems
> apparmor does not allow it:
> 
> Loading module: 'libubuntu_application_api_touch_mirclient.so.3.0.0'
> QNetworkManagerInterface::QNetworkManagerInterface(QObject*)
> propsReply "An AppArmor policy prevents this sender from sending this
> message to this recipient; type="method_call", sender=":1.862"
> (uid=32011 pid=23829 comm="/usr/lib/arm-linux
> -gnueabihf/qt5/bin/qmlscene Main")
> interface="org.freedesktop.DBus.Properties" member="GetAll" error
> name="(unset)" requested_reply="0"
> destination="org.freedesktop.NetworkManager" (uid=0 pid=1698
> comm="NetworkManager ")"
> QNetworkManagerInterface::QNetworkManagerInterface(QObject*) nmReply
> "An AppArmor policy prevents this sender from sending this message to
> this recipient; type="method_call", sender=":1.862" (uid=32011
> pid=23829 comm="/usr/lib/arm-linux-gnueabihf/qt5/bin/qmlscene Main")
> interface="org.freedesktop.NetworkManager" member="GetDevices" error
> name="(unset)" requested_reply="0"
> destination="org.freedesktop.NetworkManager" (uid=0 pid=1698
> comm="NetworkManager ")"
> "Object path cannot be empty"
> 
> syslog, however does not show any apparmor=DENIED lines, but contains
> this for my app:
> 
> Feb  3 03:10:07 ubuntu-phablet kernel: [56478.996203] type=1400
> audit(1454465407.330:1757): apparmor="STATUS"
> operation="profile_replace" profile="unconfined"
> name="tstxhttp.matv1_tstxhttp_0.1" pid=27998 comm="apparmor_parser"
> 
> not sure what that means exactly though.
> 
> 
> On irc I was advised to do a bug report. However, knowing that this
> has been a known issue for quite some time and at least one
> longstanding lp-bug exists, I thought I would ask here first what I
> ought to do.
> 
> - On this mailinglist a previous discussion is here:
> https://lists.launchpad.net/ubuntu-phone/msg14407.html
> 
> But it is left unconcluded.
> 
> 
> -the only related bug that I know of is this:
> https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/
> 1404188
> 
> Now I do not know much about apparmor but I far as I understand the
> discussion, jdstrand is basically saying that the phone trust model
> makes it so that for an app like mine to work, it would have to
> expose networkmanager directly to 'untrusted' apps, which could also
> expose unwanted things like mac address and such things to those
> apps.
> 
> It is suggested that using connectivity-api could help. But I dont
> quite see how, in scenario's like mine. Also, that bug is still
> marked as unresolved.
> 
> 
> So my question is: Whats the status of this? Should I or should I not
> be expecting XHR to work (now or in the future) on the phone?
> (Somehow, it seems kinda weird that an app on 'touch' can not use
> such a common api when any app on any desktop can).
> 
> Should I perhaps do a new bug report?
> 
> 
> Please advise,
> 
> cheers
> 
> Mathijs
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