Issue 131: Mingw mtn ssh-agent support should be taught to work with Cygwin ssh-agent

Reported by Stephen Leake, Jan 12, 2011

Steps to reproduce the problem:
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1. cmd$ ssh-agent bash
2. bash$ mtn ssh_agent_add

Expected result:
----------------
mtn should add private key to running ssh-agent session

Actual results:
---------------
mtn reports 'no ssh-agent is available'

Output of `mtn version --full`: 1.0dev
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this does work with cygwin mtn and cygwin ssh-agent, and with Debian 
mtn and Debian ssh-agent.

The problem is in win32/ssh_agent_platform.cc. It uses Win32 
FindWindow to find a running instance of "Pageant", which 
is the ssh-agent for PuTTY, a popular implementation of ssh on 
Windows.

It should also search for the cygwin ssh-agent parent process, using 
env vars SSH_AUTH_SOCK and SSH_AGENT_PID. This requires Unix 
sockets, which may not be available in MinGW.

Comment 1 by Stephen Leake, Jan 12, 2011

a little more detail; the current Win32 implementation uses Win32 
window messages to communicate with the ssh-agent process. The 
standard ssh-agent uses Unix sockets.

Comment 2 by Thomas Keller, Feb 21, 2011

re-tag, clarify summary

Labels: Type:Feature Request ~~Type:wish~~
Summary: Mingw mtn ssh-agent support should be taught to work with Cygwin ssh-agent

monotone

Issue 131: Mingw mtn ssh-agent support should be taught to work with Cygwin ssh-agent