Android: Android App Crash when clicking on a document file. (No online office installed)

[Beowulf2]

Steps to reproduce

1. Click in the app on a .doc file.
2. On the NextCloud Server Onlyoffice isn't install.
3. App crashes

Expected behaviour

• The file should open in an extern Office App on the Phone

Actual behaviour

• App crash

Environment data

Android version: 9

Device model: moto G6

Stock or customized system: Stock

Nextcloud app version: 3.10.0

Nextcloud server version: 17.0.2

Log

App Log

*** CAUSE OF ERROR ***

javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
at com.google.android.gms.org.conscrypt.ConscryptFileDescriptorSocket.startHandshake(:com.google.android.gms@[email protected] (100308-284611645):27)
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:764)
Caused by: java.security.cert.CertificateException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
at com.android.org.conscrypt.TrustManagerImpl.verifyChain(TrustManagerImpl.java:661)
at com.android.org.conscrypt.TrustManagerImpl.checkTrustedRecursive(TrustManagerImpl.java:539)
at com.android.org.conscrypt.TrustManagerImpl.checkTrusted(TrustManagerImpl.java:495)
at com.android.org.conscrypt.TrustManagerImpl.checkTrusted(TrustManagerImpl.java:418)
at com.android.org.conscrypt.TrustManagerImpl.getTrustedChainForServer(TrustManagerImpl.java:339)
at android.security.net.config.NetworkSecurityTrustManager.checkServerTrusted(NetworkSecurityTrustManager.java:94)
at android.security.net.config.RootTrustManager.checkServerTrusted(RootTrustManager.java:88)
at java.lang.reflect.Method.invoke(Native Method)
at com.google.android.gms.org.conscrypt.Platform.checkTrusted(:com.google.android.gms@[email protected] (100308-284611645):2)
at com.google.android.gms.org.conscrypt.Platform.checkServerTrusted(:com.google.android.gms@[email protected] (100308-284611645):1)
at com.google.android.gms.org.conscrypt.ConscryptFileDescriptorSocket.verifyCertificateChain(:com.google.android.gms@[email protected] (100308-284611645):7)
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@[email protected] (100308-284611645):6)
at com.google.android.gms.org.conscrypt.ConscryptFileDescriptorSocket.startHandshake(:com.google.android.gms@[email protected] (100308-284611645):14)
... 26 more
Caused by: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
... 40 more

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

*** DEVICE INFORMATION ***
Brand: motorola
Device: ali_n
Model: moto g(6)
Id: PPSS29.55-37-7-2
Product: ali_n

*** FIRMWARE ***
SDK: 28
Release: 9
Incremental: 924b9

[Beowulf2]

Ok it only crashes when the file isn't saved locale, when i download the file first and click then on it, it works fine.

[AndyScherzinger]

Duplicate of #5235

@Beowulf2 My guess: you are using self-signed SSL certificates?

[Beowulf2]

How can I fix the problem, because I use NextCloud only in the local network and with a VPN for access from outside so I cannot use another SSL certifikcat, or?

[Beowulf2]

And a lot of people use it like me and not everyone has this problem... Why?

[AndyScherzinger]

This issue needs to be fixed within the app in my opinion.

[Beowulf2]

So I can do nothing and must wait for an update?

[AndyScherzinger]

Don't know for sure, maybe @tobiasKaminsky knows.

[Beowulf2]

Ok now I have a SSL Certificat from letsencrypt and now the app work fine.

[AndyScherzinger]

Glad to hear, other than that there is a fix, that will be shipped with the upcoming bugfix release.