UnknownHostKey JSch

[tannymanny]

When running the gradle task i get this expcetion

What went wrong:
Execution failed for task ':cloneSomeRepo'.

org.eclipse.jgit.api.errors.InvalidRemoteException: Invalid remote: origin

my gradle task looks like

task cloneSomeRepo(type: com.palominolabs.gradle.task.git.clone.GitCloneTask) {
dir = file("../libToolkit_temp")
uri = 'https://@/.git'
treeish = 'master' // branch
}

[ajoberstar]

I would expect that JGit doesn't know how to handle this is a remote URL: https://@/.git.

[tannymanny]

Hi, sorry for the typo and thanks for your reply.

The URI is actually something like:
uri = "git@domain.com/path/repo.git"

My domain uses ssh verification. It works fine when I use the same uri for git cloning from commandline and other apps.

The new exception that I am getting now from the plugin is:

com.jcraft.jsch.JSchException: UnknownHostKey: domain.com RSA key fingerprint is 33:c0:e2:98:93:d2:a4:43:ec:98:60:5b:cd:ad:3b:b8

And I don't know where it is picking up that key fingerprint from.
This is not defined in my "known_hosts" file and also not the key I am using in the "id_rsa" files.

Do you know how i can fix this?

Thanks for the help

[tannymanny]

Here is the exception from the --stacktrace option

* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':cloneSomeRepo'.
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)
        at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)
        at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:64)
        at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
        at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:52)
        at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
        at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)
        at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
        at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:203)
        at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:185)
        at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:66)
        at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:50)
        at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54)
        at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40)
Caused by: org.gradle.internal.UncheckedException: com.jcraft.jsch.JSchException: UnknownHostKey: stash.cz.avg.com. RSA key fingerprint is 33:c0:e2:98:93:d2:a4:43:ec:98:60:5b
:cd:ad:3b:b8
        at org.gradle.internal.UncheckedException.throwAsUncheckedException(UncheckedException.java:45)
        at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:78)
        at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.doExecute(AnnotationProcessingTaskFactory.java:227)
        at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:220)
        at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:209)
        at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:585)
        at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:568)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
        ... 14 more
Caused by: com.jcraft.jsch.JSchException: UnknownHostKey: stash.cz.avg.com. RSA key fingerprint is 33:c0:e2:98:93:d2:a4:43:ec:98:60:5b:cd:ad:3b:b8
        at com.jcraft.jsch.Session.checkHost(Session.java:797)
        at com.jcraft.jsch.Session.connect(Session.java:342)
        at com.jcraft.jsch.Session.connect(Session.java:183)
        at com.jcraft.jsch.Session$connect.call(Unknown Source)
        at com.palominolabs.gradle.task.git.clone.SshAgentSshSessionFactory.getSession(SshAgentSshSessionFactory.groovy:64)
        at org.eclipse.jgit.transport.SshTransport.getSession(SshTransport.java:136)
        at org.eclipse.jgit.transport.TransportGitSsh$SshFetchConnection.<init>(TransportGitSsh.java:264)
        at org.eclipse.jgit.transport.TransportGitSsh.openFetch(TransportGitSsh.java:162)
        at org.eclipse.jgit.transport.FetchProcess.executeImp(FetchProcess.java:136)
        at org.eclipse.jgit.transport.FetchProcess.execute(FetchProcess.java:122)
        at org.eclipse.jgit.transport.Transport.fetch(Transport.java:1179)
        at org.eclipse.jgit.api.FetchCommand.call(FetchCommand.java:128)
        at org.eclipse.jgit.api.FetchCommand.call(FetchCommand.java:76)
        at java_util_concurrent_Callable$call.call(Unknown Source)
        at com.palominolabs.gradle.task.git.clone.GitCloneTask.setUpRepo(GitCloneTask.groovy:102)
        at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:75)
        ... 21 more

[ajoberstar]

So you're saying that's not the fingerprint of your actual host your remote URI points to?

If it is the right one, it just needs to be added to the known_hosts. If not, I'm a little unsure.

A workaround is to disable strict checking of hosts:

org.ajoberstar.grgit.auth.session.config.StrictHostKeyChecking=no

http://ajoberstar.org/grgit/docs/groovydoc/index.html?org/ajoberstar/grgit/auth/AuthConfig.html

[tannymanny]

Yes this fingerprint is NOT the one for my remote URI.

SO should i add this line in my task definition? :
org.ajoberstar.grgit.auth.session.config.StrictHostKeyChecking=no

[ajoberstar]

It seems concerning that you're seeing a different host key, but if you trust that its still connecting to the right thing, disabling is the workaround for now.

That would need to be added as a system property. So either:

./gradlew -Dorg.ajoberstar.grgit.auth.session.config.StrictHostKeyChecking=no ...

or in gradle.properties:

systemProp.org.ajoberstar.grgit.auth.session.config.StrictHostKeyChecking=no

[tannymanny]

Hi, thanks for your reply, but i am getting the same error even with StrictHostKeyChecking=no
It made no difference, i specified that in the gradle.properties file and also tried the commandline parameter. No idea where it is getting that key fingerprint from.

[ajoberstar]

Unfortuantely, not sure what to try next. This is probably related to the issues that have been reported in the past. There's some additional logging I could add, but I think it just needs more research into how JGit/JSch handle these host keys. In the near term I probably won't have a chance to do that, though certainly open to any feedback from someone who has the time.

[ajoberstar]

This is going to be more of a grgit problem, so I've opened ajoberstar/grgit#123.

[ajoberstar]

This should be resolved with 1.7.0, which will be out tonight.