JSch with RoboVM

[Mahmoud Ghonim]

Dear

I'm using JSch api in my project to uploading files on my sftp  So I need to know if it will be compiled on  RoboVM or not  in case not Please tell me about how can I upload my files by method can I compile it by RoboVM.

that's JSch Documentation http://epaul.github.io/jsch-documentation/javadoc/com/jcraft/jsch/UserInfo.html.

Thanks & Regards 

 

 

[Niklas Therning]

From searching stackoverflow it seems like JSch works on Android which means it will quite likely work on RoboVM as well. Please give it a try and let us know what happens.

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[Mahmoud Ghonim]

I tried to use the Sftp example in my own code, for sending a file to a remote server.
But I'm getting this error on the session.connect():

Session.connect: java.security.NoSuchAlgorithmException: DH KeyPairGenerator not available

com.jcraft.Session.connect(Session.java)

 

 

 

[Niklas Therning]

(CC:ing the RoboVM mailing list as well. Please use "reply all" to keep this on the list.)

That kind of error probably means that the classes implementing that algorithm aren't linked in. Try to add

<foceLinkClasses>

  <pattern>**</pattern>

</forceLinkClasses>

to your robovm.xml and see if that works better. This makes sure that everything in the classpath is linked in, even classes not referenced by your app code. It will result in a large executable so you will probably want to make that pattern more specific but using the ** pattern will at least tell you whether JSch works at all with RoboVM.

On Thu, Oct 9, 2014 at 4:21 PM, Mahmoud Ghonim <eng.mahm...@gmail.com> wrote:

I tried to use the Sftp example in my own code, for sending a file to a remote server But I'm getting this error on the session.connect():

 

java.security.NoSuchAlgorithmException: DH KeyPairGenerator not available

java.lang.NullPointerException

Please help

[Mahmoud Ghonim]

when I insert this pattern 

<foceLinkClasses>

<pattern>**</pattern>

</forceLinkClasses>

 error occured and I couldn't run my ios project

 

then I tried to use another api could u please tell my which api can I use to upload or download files to SFTP

[Niklas Therning]

The opening tag is incorrect. foce -> force

<forceLinkClasses>

  <pattern>**</pattern>

</forceLinkClasses>

If you post your complete robovm.xml here we can help you with any errors you might have in it.

--

[Mahmoud Ghonim]

Dear Niklas ,

 

Error Message:

 com.jcraft.jsch.JSchException: Session.connect: java.security.NoSuchAlgorithmException: KeyPairGenerator DH implementation not found

at com.jcraft.jsch.Session.connect(Session.java)

at com.jcraft.jsch.Session.connect(Session.java)

at com.nnaass.experimental.db.Uploading.<init>(Uploading.java)

at com.nnaass.experimental.db.DB.create(DB.java)

at com.badlogic.gdx.backends.iosrobovm.IOSGraphics.draw(IOSGraphics.java)

at com.badlogic.gdx.backends.iosrobovm.IOSGraphics$1.draw(IOSGraphics.java)

at org.robovm.apple.uikit.UIView.$cb$drawRect$(UIView.java)

at org.robovm.apple.uikit.UIApplication.main(Native Method)

at org.robovm.apple.uikit.UIApplication.main(UIApplication.java)

at com.nnaass.experimental.db.IOSLauncher.main(IOSLauncher.java)

 

 Robovm.xml

 <forceLinkClasses>

    <pattern>com.badlogic.gdx.scenes.scene2d.ui.*</pattern>

    <pattern>com.badlogic.gdx.physics.bullet.**</pattern>

    <pattern>com.android.okhttp.HttpHandler</pattern>

    <pattern>com.android.okhttp.HttpsHandler</pattern>

    <pattern>com.android.org.conscrypt.**</pattern>

    <pattern>com.android.org.bouncycastle.jce.provider.BouncyCastleProvider</pattern>

    <pattern>com.android.org.bouncycastle.jcajce.provider.keystore.BC$Mappings</pattern>

    <pattern>com.android.org.bouncycastle.jcajce.provider.keystore.bc.BcKeyStoreSpi</pattern>

    <pattern>com.android.org.bouncycastle.jcajce.provider.keystore.bc.BcKeyStoreSpi$Std</pattern>

    <pattern>com.android.org.bouncycastle.jce.provider.PKIXCertPathValidatorSpi</pattern>

    <pattern>com.android.org.bouncycastle.crypto.digests.AndroidDigestFactoryOpenSSL</pattern>

    <pattern>org.apache.harmony.security.provider.cert.DRLCertFactory</pattern>

    <pattern>org.apache.harmony.security.provider.crypto.CryptoProvider</pattern>

    <pattern>org.sqlite.JDBC</pattern>

    <pattern>org.sqlite.JDBC</pattern>

    <pattern>SQLite.JDBC2z.*</pattern>

    <pattern>org.h2.Driver</pattern>

    <pattern>SQLite.JDBCDriver.*</pattern>

<pattern>com.jcraft.jsch.jce.Random</pattern>

<pattern>com.jcraft.jsch.jce.AES128CTR</pattern>

<pattern>com.jcraft.jsch.jce.AES256CBC</pattern>

<pattern>com.jcraft.jsch.jce.AES192CBC</pattern>

<pattern>com.jcraft.jsch.jce.AES128CBC</pattern>

<pattern>com.jcraft.jsch.jce.TripleDESCTR</pattern>

<pattern>com.jcraft.jsch.jce.DH</pattern>

<pattern>com.jcraft.jsch.DHG14</pattern>

<pattern>com.jcraft.jsch.DHG1</pattern>

<pattern>com.jcraft.jsch.jce.SHA1</pattern>

<pattern>com.jcraft.jsch.jce.**</pattern>

<pattern>java.util.logging.ConsoleHandler</pattern>

<pattern>java.util.logging.SimpleFormatter</pattern>

<pattern>org.apache.commons.vfs2.**</pattern>

<pattern>com.jcraft.jsch.**</pattern>   

  </forceLinkClasses>

When I removed all pattern and  put  <pattern>**</pattern> Error Message Occured

[Mahmoud Ghonim]

That's a problem occurred during I put <pattern>**</pattern>

if I remove all pattern and set this pattern only

 

<forceLinkClasses>

<pattern>**</pattern> only this pattern

 </forceLinkClasses>

or added it to my pattern

 

<forceLinkClasses>

<pattern>**</pattern>

    <pattern>com.badlogic.gdx.scenes.scene2d.ui.*</pattern>

    <pattern>com.badlogic.gdx.physics.bullet.**</pattern>

    <pattern>com.android.okhttp.HttpHandler</pattern>

    <pattern>com.android.okhttp.HttpsHandler</pattern>

    <pattern>com.android.org.conscrypt.**</pattern>

 </forceLinkClasses>

 

 

 

 

[Mahmoud Ghonim]

Note I tried to run this code on desktop and it was working with no errors

 

[Niklas Therning]

We would need to see the Eclipse log file after you get this error. There should be more info there about what happens, like a stacktrace. You should find this log file in <workspacedir>/.metadata/.log. Please only post the relevant pieces of that log file as it can be quite big.

On Sun, Oct 12, 2014 at 12:52 PM, Mahmoud Ghonim <eng.mahm...@gmail.com> wrote:

Note I tried to run this code on desktop and it was working with no errors

 

--

[Mahmoud Ghonim]

Dear Niklas,

I need any API that allowing file transferring and can compiled on Robovm.

Please Help

[Niklas Therning]

Add to your robovm.xml

<forceLinkClasses>

  <pattern>org.apache.commons.vfs.provider.local.DefaultLocalFileProvider</pattern>

</forceLinkClasses>

Do this whenever you get a ClassNotFoundException.

On Wed, Oct 15, 2014 at 2:39 PM, Mahmoud Ghonim <eng.mahm...@gmail.com> wrote:

All needed Jars commons-codec-1.3.jar commons-httpclient-3.1.jar commons-logging-1.0.4.jar commons-net-2.0.jar commons-vfs-2.0.jar jsch-0.1.41.jar zehon_file_transfer-1.1.6.jar bcprov-jdk15-1.43.jar zehon_file_transfer-1.1.6.jar

org.apache.commons.vfs.FileSystemException: Could not load VFS configuration from "jar:file:/Users/system/Library/Developer/CoreSimulator/Devices/7F38CA9E-1431-4D36-9032-0361184795B1/data/Containers/Bundle/Application/336F323C-A0CD-4D0B-9DB8-800CBA002E9F/IOSLauncher.app/lib/commons-vfs-2.0.jar!/org/apache/commons/vfs/impl/providers.xml".

at org.apache.commons.vfs.impl.StandardFileSystemManager.configure(StandardFileSystemManager.java)

at org.apache.commons.vfs.impl.StandardFileSystemManager.init(StandardFileSystemManager.java)

at com.nnaass.experimental.db.Zehon.<init>(Zehon.java)

at com.nnaass.experimental.db.DB.create(DB.java)

at com.badlogic.gdx.backends.iosrobovm.IOSGraphics.draw(IOSGraphics.java)

at com.badlogic.gdx.backends.iosrobovm.IOSGraphics$1.draw(IOSGraphics.java)

at org.robovm.apple.uikit.UIView.$cb$drawRect$(UIView.java)

at org.robovm.apple.uikit.UIApplication.main(Native Method)

at org.robovm.apple.uikit.UIApplication.main(UIApplication.java)

at com.nnaass.experimental.db.IOSLauncher.main(IOSLauncher.java)

Caused by: org.apache.commons.vfs.FileSystemException: Could not create file provider of class "org.apache.commons.vfs.provider.local.DefaultLocalFileProvider".

at org.apache.commons.vfs.impl.StandardFileSystemManager.createInstance(StandardFileSystemManager.java)

at org.apache.commons.vfs.impl.StandardFileSystemManager.addProvider(StandardFileSystemManager.java)

at org.apache.commons.vfs.impl.StandardFileSystemManager.configure(StandardFileSystemManager.java)

... 10 more

Caused by: java.lang.ClassNotFoundException: org.apache.commons.vfs.provider.local.DefaultLocalFileProvider

at java.lang.VMClassLoader.findClassInClasspathForLoader(Native Method)

at java.lang.PathClassLoader.findClass(PathClassLoader.java)

at java.lang.ClassLoader.loadClass(ClassLoader.java)

at java.lang.ClassLoader.loadClass(ClassLoader.java)

... 13 more

[Mahmoud Ghonim]

after I put it

com.zehon.exception.FileTransferException: org.apache.commons.vfs.FileSystemException: Could not create a file system manager of class "org.apache.commons.vfs.impl.StandardFileSystemManager".

at com.zehon.FileTransferClient.resourceExist(FileTransferClient.java)

at com.zehon.FileTransferClient.fileExists(FileTransferClient.java)

at com.zehon.sftp.SFTPClient.fileExists(SFTPClient.java)

at com.zehon.sftp.SFTP.fileExists(SFTP.java)

at com.nnaass.experimental.db.Zehon.<init>(Zehon.java)

at com.nnaass.experimental.db.DB.create(DB.java)

at com.badlogic.gdx.backends.iosrobovm.IOSGraphics.draw(IOSGraphics.java)

at com.badlogic.gdx.backends.iosrobovm.IOSGraphics$1.draw(IOSGraphics.java)

at org.robovm.apple.uikit.UIView.$cb$drawRect$(UIView.java)

at org.robovm.apple.uikit.UIApplication.main(Native Method)

at org.robovm.apple.uikit.UIApplication.main(UIApplication.java)

at com.nnaass.experimental.db.IOSLauncher.main(IOSLauncher.java)

Caused by: org.apache.commons.vfs.FileSystemException: Could not create a file system manager of class "org.apache.commons.vfs.impl.StandardFileSystemManager".

at org.apache.commons.vfs.VFS.createManager(VFS.java)

at org.apache.commons.vfs.VFS.getManager(VFS.java)

at com.zehon.FileTransferClient.getFileObject(FileTransferClient.java)

... 12 more

Caused by: org.apache.commons.vfs.FileSystemException: Could not load VFS configuration from "jar:file:/Users/system/Library/Developer/CoreSimulator/Devices/7F38CA9E-1431-4D36-9032-0361184795B1/data/Containers/Bundle/Application/15240C07-4B7A-4491-A940-EB613D0A5980/IOSLauncher.app/lib/commons-vfs-2.0.jar!/org/apache/commons/vfs/impl/providers.xml".

at org.apache.commons.vfs.impl.StandardFileSystemManager.configure(StandardFileSystemManager.java)

at org.apache.commons.vfs.impl.StandardFileSystemManager.init(StandardFileSystemManager.java)

at java.lang.reflect.Method.internalInvoke(Native Method)

at java.lang.reflect.Method.invoke(Method.java)

... 15 more

Caused by: org.apache.commons.vfs.FileSystemException: Could not create file provider of class "org.apache.commons.vfs.provider.zip.ZipFileProvider".

at org.apache.commons.vfs.impl.StandardFileSystemManager.createInstance(StandardFileSystemManager.java)

at org.apache.commons.vfs.impl.StandardFileSystemManager.addProvider(StandardFileSystemManager.java)

at org.apache.commons.vfs.impl.StandardFileSystemManager.configure(StandardFileSystemManager.java)

... 19 more

Caused by: java.lang.ClassNotFoundException: org.apache.commons.vfs.provider.zip.ZipFileProvider

at java.lang.VMClassLoader.findClassInClasspathForLoader(Native Method)

at java.lang.PathClassLoader.findClass(PathClassLoader.java)

at java.lang.ClassLoader.loadClass(ClassLoader.java)

at java.lang.ClassLoader.loadClass(ClassLoader.java)

... 22 more

 

[Niklas Therning]

Whenever you get a ClassNotFoundException you should try to add a pattern to your forceLinkClasses in your robovm.xml.

--

[Mahmoud Ghonim]

the code that I was wriiten

Boolean exist=SFTP.fileExists(SFTPWORKINGDIR, "1.png", SFTPHOST, SFTPUSER, SFTPPASS);
if(exist){
}

please help my I tried alot of api to transfer my files from,to sftp server but all depends on JSCH  but as you know that when I'm using JSCH error occurred

 com.jcraft.jsch.JSchException: Session.connect: java.security.NoSuchAlgorithmException: KeyPairGenerator DH implementation not found

at com.jcraft.jsch.Session.connect(Session.java)

at com.jcraft.jsch.Session.connect(Session.java)

at com.nnaass.experimental.db.Uploading.<init>(Uploading.java)

at com.nnaass.experimental.db.DB.create(DB.java)

[Mahmoud Ghonim]

 Dear Niklas,

I need to Resolve only this issue Please help  (JSCH API)

 

com.jcraft.jsch.JSchException: Session.connect: java.security.NoSuchAlgorithmException: KeyPairGenerator DH implementation not found

at com.jcraft.jsch.Session.connect(Session.java)

at com.jcraft.jsch.Session.connect(Session.java)

at com.nnaass.experimental.db.Uploading.<init>(Uploading.java)

at com.nnaass.experimental.db.DB.create(DB.java)

at com.badlogic.gdx.backends.iosrobovm.IOSGraphics.draw(IOSGraphics.java)

at com.badlogic.gdx.backends.iosrobovm.IOSGraphics$1.draw(IOSGraphics.java)

at org.robovm.apple.uikit.UIView.$cb$drawRect$(UIView.java)

at org.robovm.apple.uikit.UIApplication.main(Native Method)

at org.robovm.apple.uikit.UIApplication.main(UIApplication.java)

at com.nnaass.experimental.db.IOSLauncher.main(IOSLauncher.java)

and that's a good example for uploading files on sftp server if you want to try to help me for solving this Issue:

http://kodehelp.com/java-program-for-uploading-file-to-sftp-server/

[Niklas Therning]

Again, try

<forceLinkClasses>

  <pattern>**</pattern>

</forceLinkClasses>

in your robovm.xml. If that fails with an Eclipse error we need to see your Eclipse log file.

[Mahmoud Ghonim]

 tried to put

  <pattern>**</pattern>

but still have a problem 

eclipse log  eclipse Logfile

 

[Niklas Therning]

That looks like a bug in the RoboVM compiler. Please let me know where I can download the JAR file for the scp/sftp implementation you're using.

--

[Mahmoud Ghonim]

Dear Niklas,

You can download JSCH, Jzlib from Maven Repository; 

Download JSCH JAR file.

Download Jzlib Jar file.

How to use it JSCH tutorial.

Thanks & Regards

[Mahmoud Ghonim]

Dear Niklas,

Any updates.

[Mahmoud Ghonim]

Dear Niklas,

Any updates ?

[Niklas Therning]

I've know tried to compile all the class contained in the JSCH and
Jzlib jar files you linked to and I don't get any exception. They
happily compile with the latest version of RoboVM. Please retry with
the latest release (beta-01) or the latest nightly.

On Tue, Dec 9, 2014 at 8:43 AM, Mahmoud Ghonim
<eng.mahm...@gmail.com> wrote:
> Dear Niklas,
>
> Any updates ?