crash displying a pdf file

[kellnerp]

Steps to reproduce

1. Create pdf file using pdflatex in Nextcloud folder on Ubuntu 18.04
2. Open said pdf file in Android on Samsung Galaxy Note 4
3. Crash

Expected behaviour

• Tell us what should happen
  Pdf file should display

Actual behaviour

• Tell us what happens
  Flashes pdf as a text file then complains of internal error then crashes.

Environment data

Android version:
6.01
Device model:
SM-N916S
Stock or customized system:
STOCK
Nextcloud app version:
3.10.0
Nextcloud server version:
17

Logs

Web server error log

N/A```
Insert your webserver log here

#### Nextcloud log (data/nextcloud.log)
N/A```
Insert your Nextcloud log here

************ CAUSE OF ERROR ************

javax.net.ssl.SSLPeerUnverifiedException: Hostname 45.x.x.x not verified:
    certificate: sha256/xxxxxxxxxcc
    DN: 1.2.840.113549.1.9.1=#16166b656c6c6e6572704065617274686c696e6b2e6e6574,CN=45.x.x.x,O=xx,L=xxx,ST=xx,C=xx
    subjectAltNames: []
at okhttp3.internal.connection.RealConnection.connectTls(RealConnection.java:334)
at okhttp3.internal.connection.RealConnection.establishProtocol(RealConnection.java:284)
at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:169)
at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:258)
at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:135)
at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:114)
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:127)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:257)
at okhttp3.RealCall.execute(RealCall.java:93)
at com.nextcloud.common.OkHttpMethodBase.execute(OkHttpMethodBase.kt:126)
at com.nextcloud.common.NextcloudClient.execute(NextcloudClient.kt:67)
at com.owncloud.android.lib.resources.activities.GetActivitiesRemoteOperation.run(GetActivitiesRemoteOperation.java:131)
at com.nextcloud.common.NextcloudClient.execute(NextcloudClient.kt:63)
at com.owncloud.android.ui.fragment.FileDetailActivitiesFragment.lambda$fetchAndSetData$5$FileDetailActivitiesFragment(FileDetailActivitiesFragment.java:331)
at com.owncloud.android.ui.fragment.-$$Lambda$FileDetailActivitiesFragment$N7POe6TZvoGcuV2qP-niPxY_7t4.run(lambda)
at java.lang.Thread.run(Thread.java:818)

************ APP INFORMATION ************
ID: com.nextcloud.client
Version: 30100090
Build flavor: gplay

************ DEVICE INFORMATION ************
Brand: samsung
Device: tre3calteskt
Model: SM-N916S
Id: MMB29K
Product: tre3calteskt

************ FIRMWARE ************
SDK: 23
Release: 6.0.1
Incremental: N916SKSU2DSA1




Sent from my Samsung device
**NOTE:** Be super sure to remove sensitive data like passwords, note that everybody can look here! You can use the Issue Template application to prefill some of the required information: https://apps.nextcloud.com/apps/issuetemplate

[kellnerp]

Nextcloud server has no domain name, only ip address with snakeoil certificate.
Pdf file was downloaded and could be read. But not initially by app.

[avalx]

I have the same problem, not only PDF but other files as well (odt, doc for example). And sometimes it only happens the first time I try to download/open a file, when I restart the client and try to open the same file everything works OK.

Here is my log:

`************ CAUSE OF ERROR ************

javax.net.ssl.SSLPeerUnverifiedException: Hostname www.sever.lan not verified:
certificate: sha256/8rVpiCZXpVMIfGLFWCMdA5VYGvzX/ZS3DoPf9Bmo7Ac=
DN: 1.2.840.113549.1.9.1=#160e726f6f744073657665722e6c616e,CN=www.sever.lan,OU=Sever Web Server,O=AVAL d.o.o.,ST=Slovenia,C=SI
subjectAltNames: []
at okhttp3.internal.connection.RealConnection.connectTls(RealConnection.java:334)
at okhttp3.internal.connection.RealConnection.establishProtocol(RealConnection.java:284)
at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:169)
at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:258)
at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:135)
at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:114)
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:127)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:257)
at okhttp3.RealCall.execute(RealCall.java:93)
at com.nextcloud.common.OkHttpMethodBase.execute(OkHttpMethodBase.kt:126)
at com.nextcloud.common.NextcloudClient.execute(NextcloudClient.kt:67)
at com.owncloud.android.lib.resources.activities.GetActivitiesRemoteOperation.run(GetActivitiesRemoteOperation.java:131)
at com.nextcloud.common.NextcloudClient.execute(NextcloudClient.kt:63)
at com.owncloud.android.ui.fragment.FileDetailActivitiesFragment.lambda$fetchAndSetData$5$FileDetailActivitiesFragment(FileDetailActivitiesFragment.java:331)
at com.owncloud.android.ui.fragment.-$$Lambda$FileDetailActivitiesFragment$N7POe6TZvoGcuV2qP-niPxY_7t4.run(lambda)
at java.lang.Thread.run(Thread.java:818)

************ APP INFORMATION ************
ID: com.nextcloud.client
Version: 30100053
Build flavor: generic

************ DEVICE INFORMATION ************
Brand: Android
Device: espressowifi
Model: Galaxy Tab 2
Id: MOI10E
Product: espresso10wifixx

************ FIRMWARE ************
SDK: 23
Release: 6.0.1
Incremental: eng.andi.20190729.140516
`

I also noticed that this only happens when using the client with my local/internal NC server (signed with my own CA). Using the client with Disroot.org for example does not produce such errors.

[avalx]

Just to add another observation. This problem only occurs if I tap on the file I want to open. If on the other hand I tap on the 3 dot menu and choose "Download", the file is downloaded without errors and I can than open it normally.

[AndyScherzinger]

Cc @tobiasKaminsky and @ezaquarii for okhttp topic

[kellnerp]

Avalx. The behavior you mentioned has happened frequently, but the crashing and error report is new. Not just pdf, but videos.

[kellnerp]

Also text files cause this error until they have time to download.

[tobiasKaminsky]

Is this with self-signed certs?

[kellnerp]

I am using self signed certs. It is a private storage without domain name.
Nextcloud has always choked when trying to play or display anything forever. Only recently have these error dumps showed up.

[moviuro]

I have the same issue as otherwise reported on my own server https://sco.popho.be (TLS 1.3 only, Let's Encrypt certificate, nginx). Crash report below.

************ CAUSE OF ERROR ************

javax.net.ssl.SSLHandshakeException: Handshake failed
	at com.google.android.gms.org.conscrypt.ConscryptFileDescriptorSocket.startHandshake(:com.google.android.gms@20104037@20.1.04 (120400-288960190):38)
	at okhttp3.internal.connection.RealConnection.connectTls(RealConnection.java:320)
	at okhttp3.internal.connection.RealConnection.establishProtocol(RealConnection.java:284)
	at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:169)
	at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:258)
	at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:135)
	at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:114)
	at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
	at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
	at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
	at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:127)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
	at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:257)
	at okhttp3.RealCall.execute(RealCall.java:93)
	at com.nextcloud.common.OkHttpMethodBase.execute(OkHttpMethodBase.kt:126)
	at com.nextcloud.common.NextcloudClient.execute(NextcloudClient.kt:67)
	at com.owncloud.android.lib.resources.activities.GetActivitiesRemoteOperation.run(GetActivitiesRemoteOperation.java:131)
	at com.nextcloud.common.NextcloudClient.execute(NextcloudClient.kt:63)
	at com.owncloud.android.ui.fragment.FileDetailActivitiesFragment.lambda$fetchAndSetData$5$FileDetailActivitiesFragment(FileDetailActivitiesFragment.java:331)
	at com.owncloud.android.ui.fragment.-$$Lambda$FileDetailActivitiesFragment$N7POe6TZvoGcuV2qP-niPxY_7t4.run(Unknown Source:12)
	at java.lang.Thread.run(Thread.java:919)
Caused by: javax.net.ssl.SSLProtocolException: SSL handshake aborted: ssl=0x730a93b488: Failure in SSL library, usually a protocol error
error:1000042e:SSL routines:OPENSSL_internal:TLSV1_ALERT_PROTOCOL_VERSION (third_party/openssl/boringssl/src/ssl/tls_record.cc:592 0x730a81b808:0x00000001)
	at com.google.android.gms.org.conscrypt.NativeCrypto.SSL_do_handshake(Native Method)
	at com.google.android.gms.org.conscrypt.NativeSsl.doHandshake(:com.google.android.gms@20104037@20.1.04 (120400-288960190):6)
	at com.google.android.gms.org.conscrypt.ConscryptFileDescriptorSocket.startHandshake(:com.google.android.gms@20104037@20.1.04 (120400-288960190):14)
	... 26 more

************ APP INFORMATION ************
ID: com.nextcloud.client
Version: 30100090
Build flavor: gplay

************ DEVICE INFORMATION ************
Brand: Nokia
Device: B2N_sprout
Model: Nokia 7 plus
Id: QKQ1.190828.002
Product: Onyx_00WW

************ FIRMWARE ************
SDK: 29
Release: 10
Incremental: 00WW_4_10D

[kellnerp]

I have had this happen frequently since I first reported it. If I can download the file first then the error generally doesn't occur. Never had this problem with Dropbox. It streams anything streamable without complaint.