Re: [Interest] Qt Android app crashing on Android 6.0 -

Jason H Tue, 03 Nov 2015 06:46:33 -0800

You need to consult a lawyer.

But a basic overview is: it is illegal in some countries to publish software that uses strong crypto in some other countries. For example it is illegal (in most situations) in the USA to distribute strong-crypto products in Iran. There are weaker "export compliant" encryption (just a much smaller key size) that you can use in those countries. There also may be exceptions if the information being protected is of a medical nature. However, I cannot advise on your specific situation. The easy thing would be to limit your app to not be distributed in the export-restricted countries. That is also not advice but may be an option depending on your situation.

Sent: Tuesday, November 03, 2015 at 6:50 AM
From: "Nuno Santos" <nunosan...@imaginando.pt>
To: "Turunen Tuukka" <tuukka.turu...@theqtcompany.com>
Cc: "interest@qt-project.org" <interest@qt-project.org>
Subject: Re: [Interest] Qt Android app crashing on Android 6.0 -

I’m trying to add shared openssl support to my Qt app.

I’m currently following the instructions available on Qt documentation page and it says the following:

Note: You must consider enabling/disabling the SSL features based on the legal restrictions in the region where your application is available.

I’m completely in the dark here and if someone with more experience with this could give me some light, that would be awesome.

My SSL needs are basically for making https requests to websites.

Does anyone has an idea of what are the minimum features that needed to be enabled for this to happen?

Does that minimum set of features has legal problems?

Thanks in advance,

Regards,

Nuno Santos

On 26 Oct 2015, at 13:29, Turunen Tuukka <tuukka.turu...@theqtcompany.com> wrote:

Hi,

When we have been running Android 6 and itse development versions we have not experienced such crashes. The crash you sent is in libcrypto.so though, which is not part of the Android NDK, so if you're using the system version, you're a bit on your own. As we've said in our documentation, you have to bundle OpenSSL with your application if you want to make sure it works with future versions of Android. That said, one of our developers recently tested a Qt example that uses OpenSSL as well, and that also works fine on Android 6.0.

Here's the docs about OpenSSL: http://doc.qt.io/qt-5/opensslsupport.html

Once you have narrowed this down, please make a bug report.

Yours,

Tuukka

-----Original Message-----
From: interest-bounces+tuukka.turunen=theqtcompany....@qt-project.org
[mailto:interest-bounces+tuukka.turunen=theqtcompany.com@qt-
project.org] On Behalf Of Nuno Santos
Sent: maanantaina 26. lokakuuta 2015 11.06
To: interest <interest@qt-project.org>
Subject: [Interest] Qt Android app crashing on Android 6.0 -

Hi,

My users are reporting crashes on Android 6.0 when trying to start the app.

Below is what I got from Google Developer Console. Does anyone know what
is happening here? Is anyone having the same problem?

What can I do to address this?

Thanks in advance,

Regards,

Nuno

*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** Build
fingerprint: 'google/volantis/flounder:6.0/MRA58K/2256973:user/release-
keys'
Revision: '0'
ABI: 'arm'
pid: 2307, tid: 2397, name: QtThread >>> com.imaginando.lk <<< signal 11
(SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x8
   r0 00000008 r1 00000000 r2 00000000 r3 00000002
   r4 ac6026c8 r5 ac935680 r6 00000000 r7 00000008
   r8 00000001 r9 de12f518 sl ac93583c fp ac6930a8
   ip f69fd9b0 sp de12f4b8 lr f69c1a59 pc f6fa0542 cpsr 40030030

backtrace:
   #00 pc 00042542 /system/lib/libc.so (pthread_rwlock_wrlock+1)
   #01 pc 0005fa55 /system/lib/libcrypto.so (CRYPTO_MUTEX_lock_write+2)
   #02 pc 000640ff /system/lib/libcrypto.so (X509_STORE_add_cert+62)
   #03 pc 00073579 /data/app/com.imaginando.lk-
1/lib/arm/libQt5Network.so
   #04 pc 0006f069 /data/app/com.imaginando.lk-
1/lib/arm/libQt5Network.so
   #05 pc 00070bf1 /data/app/com.imaginando.lk-
1/lib/arm/libQt5Network.so
   #06 pc 000718bf /data/app/com.imaginando.lk-
1/lib/arm/libQt5Network.so
   #07 pc 0006aa15 /data/app/com.imaginando.lk-
1/lib/arm/libQt5Network.so (QSslSocket::startClientEncryption()+116)
   #08 pc 0006b1cd /data/app/com.imaginando.lk-
1/lib/arm/libQt5Network.so
   #09 pc 001cd2b7 /data/app/com.imaginando.lk-1/lib/arm/libQt5Core.so
(QMetaObject::activate(QObject*, int, int, void**)+1146)
   #10 pc 0005e9c3 /data/app/com.imaginando.lk-
1/lib/arm/libQt5Network.so
   #11 pc 00060b31 /data/app/com.imaginando.lk-
1/lib/arm/libQt5Network.so
   #12 pc 00059951 /data/app/com.imaginando.lk-
1/lib/arm/libQt5Network.so
   #13 pc 000640d3 /data/app/com.imaginando.lk-
1/lib/arm/libQt5Network.so
   #14 pc 001ae739 /data/app/com.imaginando.lk-1/lib/arm/libQt5Core.so
(QCoreApplicationPrivate::notify_helper(QObject*, QEvent*)+40)
   #15 pc 001ae767 /data/app/com.imaginando.lk-1/lib/arm/libQt5Core.so
(QCoreApplication::notify(QObject*, QEvent*)+42)
   #16 pc 001ae583 /data/app/com.imaginando.lk-1/lib/arm/libQt5Core.so
(QCoreApplication::notifyInternal(QObject*, QEvent*)+62)
   #17 pc 001e412d /data/app/com.imaginando.lk-1/lib/arm/libQt5Core.so
(QEventDispatcherUNIX::activateSocketNotifiers()+128)
   #18 pc 001e42e9 /data/app/com.imaginando.lk-1/lib/arm/libQt5Core.so
(QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEvents
Flag>, timespec*)+408)
   #19 pc 001e44ff /data/app/com.imaginando.lk-1/lib/arm/libQt5Core.so
(QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFl
ag>)+178)
   #20 pc 001ad6a7 /data/app/com.imaginando.lk-1/lib/arm/libQt5Core.so
(QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)+14)
   #21 pc 001add87 /data/app/com.imaginando.lk-1/lib/arm/libQt5Core.so
(QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)+226)
   #22 pc 000751f1 /data/app/com.imaginando.lk-1/lib/arm/libQt5Core.so
(QThread::exec()+84)
   #23 pc 00077899 /data/app/com.imaginando.lk-1/lib/arm/libQt5Core.so
   #24 pc 00041537 /system/lib/libc.so (__pthread_start(void*)+30)
   #25 pc 0001918b /system/lib/libc.so (__start_thread+6)

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Re: [Interest] Qt Android app crashing on Android 6.0 -

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