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Posted to dev@mina.apache.org by "uttamgupta (via GitHub)" <gi...@apache.org> on 2025/04/02 18:46:37 UTC
[I] Throws exception if home folder doesn't exist. [mina-sshd]
uttamgupta opened a new issue, #717:
URL: https://github.com/apache/mina-sshd/issues/717
### Version
2.14.0
### Bug description
In our environment, few users don't have home folder and it set to /dev/null . But SshClient tries to read config file and it throws exception.
Although it expects exception NoSuchFileException. see code snippet from file FileSnapshot.java
`public static FileSnapshot save(Path file, LinkOption... options) throws IOException {
BasicFileAttributes attributes = null;
Instant now = Instant.now();
try {
attributes = Files.readAttributes(file, BasicFileAttributes.class, options);
} catch (NoSuchFileException e) {
return NO_FILE;
}
if (attributes == null) {
return NO_FILE;
}
return new FileSnapshot(now, attributes.lastModifiedTime(), attributes.size(), attributes.fileKey());
}`
### Actual behavior
```
java.nio.file.FileSystemException: /dev/null/.ssh/config: Not a directory
at java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:100)
at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:106)
at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111)
at java.base/sun.nio.fs.UnixFileAttributeViews$Basic.readAttributes(UnixFileAttributeViews.java:55)
at java.base/sun.nio.fs.UnixFileSystemProvider.readAttributes(UnixFileSystemProvider.java:171)
at java.base/java.nio.file.Files.readAttributes(Files.java:1853)
at org.apache.sshd.common.util.io.FileSnapshot.save(FileSnapshot.java:145)
at org.apache.sshd.common.util.io.ModifiableFileWatcher.checkReloadRequired(ModifiableFileWatcher.java:109)
at org.apache.sshd.client.config.hosts.ConfigFileHostEntryResolver.resolveEffectiveResolver(ConfigFileHostEntryResolver.java:79)
at org.apache.sshd.client.config.hosts.ConfigFileHostEntryResolver.resolveEffectiveHost(ConfigFileHostEntryResolver.java:59)
at org.apache.sshd.client.SshClient.resolveHost(SshClient.java:735)
at org.apache.sshd.client.SshClient.connect(SshClient.java:543)
at org.apache.sshd.client.session.ClientSessionCreator.connect(ClientSessionCreator.java:74)
at org.apache.sshd.client.session.ClientSessionCreator.connect(ClientSessionCreator.java:57)
```
### Expected behavior
I think it should also expect "Not a directory" .
### Relevant log output
```Shell
```
### Other information
_No response_
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Re: [I] Throws exception if home folder doesn't exist. [mina-sshd]
Posted by "uttamgupta (via GitHub)" <gi...@apache.org>.
uttamgupta closed issue #717: Throws exception if home folder doesn't exist.
URL: https://github.com/apache/mina-sshd/issues/717
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Re: [I] Throws exception if home folder doesn't exist. [mina-sshd]
Posted by "tomaswolf (via GitHub)" <gi...@apache.org>.
tomaswolf commented on issue #717:
URL: https://github.com/apache/mina-sshd/issues/717#issuecomment-2773449887
If you don't have a home directory then don't use a `ConfigFileHostEntryResolver`. Configure your own.
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Re: [I] Throws exception if home folder doesn't exist. [mina-sshd]
Posted by "uttamgupta (via GitHub)" <gi...@apache.org>.
uttamgupta commented on issue #717:
URL: https://github.com/apache/mina-sshd/issues/717#issuecomment-2773595044
> ConfigFileHostEntryResolver
Thanks I have tested with my sample code and it worked -
`public class CustomConfigFileHostEntryResolver implements HostConfigEntryResolver {
@Override
public HostConfigEntry resolveEffectiveHost(String host, int port, SocketAddress localAddress, String username, String proxyJump, AttributeRepository context) throws IOException {
return null;
}
}`
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