Christian Leiner created SSHD-749:
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Summary: SFTP client sends wrong open flags for protocol version 4
Key: SSHD-749
URL: https://issues.apache.org/jira/browse/SSHD-749
Project: MINA SSHD
Issue Type: Bug
Affects Versions: 1.4.0
Reporter: Christian Leiner
Attachments: AbstractSftpClient_open_flags.patch,
SftpVersionsTest_open_flags.patch
While trying to create a file on a remote server using {{SftpClient}}, I always
received {{SSH_FX_NO_SUCH_FILE}}. However, there were no problems with the
server when using another client.
Debugging the issue, I discovered that {{AbstractSftpClient.open()}} doesn't
handle the {{OpenMode}} options according to the spec when using protocol
version 4 (https://tools.ietf.org/html/draft-ietf-secsh-filexfer-04) and
diverges from SSHD's server implementation as well (i.e.
{{SftpSubsystem.doOpen()}}).
I have attached a test case to reproduce the problem
({{SftpVersionsTest_open_flags.patch}}). There's also a simple patch that
should fix the issue ({{AbstractSftpClient_open_flags.patch}}).
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