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Posted to dev@mina.apache.org by GitBox <gi...@apache.org> on 2022/12/20 19:27:39 UTC
[GitHub] [mina-sshd] ThanasisBarekas opened a new issue, #296: [Support Request] Read only VirtualFileSystemFactory
ThanasisBarekas opened a new issue, #296:
URL: https://github.com/apache/mina-sshd/issues/296
Hello,
Is it possible to create a read only VirtualFileSystemFactory ? if yes can you please share an example ?
Thank you,
Thanasis
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[GitHub] [mina-sshd] tomaswolf commented on issue #296: [Support Request] Read only VirtualFileSystemFactory
Posted by GitBox <gi...@apache.org>.
tomaswolf commented on issue #296:
URL: https://github.com/apache/mina-sshd/issues/296#issuecomment-1360277406
I looked at that a while ago myself in the context of [Gerrit issue 15944](https://bugs.chromium.org/p/gerrit/issues/detail?id=15944). I didn't see immediately how to do that. Perhaps someone more knowledgeable with FileSystems can chime in here.
To enforce read-only SFTP access, another approach might be using a `org.apache.sshd.contrib.server.subsystem.sftp.SimpleAccessControlSftpEventListener.READ_ONLY_ACCESSOR`. Something like
```
SftpSubsystemFactory.Builder builder = new SftpSubsystemFactory.Builder();
builder.addSftpEventListener(SimpleAccessControlSftpEventListener.READ_ONLY_ACCESSOR);
server.setSubsystemFactories(Collections.singletonList(builder.build())); // Actually, add the SFTP factory to whatever other factories there are.
server.setFileSystemFactory(new VirtualFileSystemFactory(rootPath));
```
Otherwise look at `org.apache.sshd.common.file.root.RootedFileSystem`. It does have an `isReadOnly()` method. It might perhaps be necessary to override more methods to make it truly read-only, and you'd need a provider for it, and probably override parts of the `VirtualFileSystemFactory` to use your own read-only filesystem implementation.
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