[SSHD-700] SSHD does not suppot agent forwarding for XShell and XAgent

• Type: New Feature
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.2.0
• Fix Version/s: 1.7.0
• Environment: Windows 10 and CentOS 7; XShell 5.0
• Assignee: Lyor Goldstein
• Reporter: Li Fangning
• Created: 25/Sep/16 14:39
• Updated: 16/Jul/17 23:50
• Resolved: 16/Jul/17 08:04

Description

I use MINA SSHD for both server side and client side:

SSH client --> MINA SSHD Server - MINA SSHD Client --> Target Linux Server

I use XShell (http://www.netsarang.com/) as SSH client, and use XAgent with XShell for target server authentication (Public Key Access with Agent Forwarding).
I have tried PuTTY (with pagent), SecureCRT, and openssh client in linux, they are all passed. But when I try XShell with XAgent, the agent forwarding phase is failed.

When I check the debug log and source code of MINA SSHD, I find that SSHD only handle the "[e-mail]" request type (in org.apache.sshd.server.channel.ChannelSession#handleInternalRequest), which is OK for PuTTY, SecureCRT and openssh client. But XShell send a "auth-agent-req" request (without "@openssh.com"), so SSHD not handle the request.
I have try to change the source code, add "auth-agent-req" to the "switch-case" in handleInternalRequest, but the authentication is blocked.

I have attached my code, please help me solve the problem.

Thanks a lot.

Issue Links

• links to: GitHub Pull Request #34