keychain patch (2)

[Karl M]

Hi All...

I made a small patch to keychain, so that it creates an additional
pid file named ~/ssh-agent.cmd
The only difference between this and the previous version is that the file 
created is ~/ssh-agent.cmd instead of ~/ssh-agent.bat so it is a bit less 
obtrusive. I couldn't do a ~/.ssh-agent-cmd file because the call mechanism 
in cmd.exe handles it differently (uses a different shell instead of the 
same shell).

This allows non-cygwin ssh-aware programs (such as unison) to take
advantage of the keychain functionality. The new file can be used
from a windows command script by
@echo off
call bash --login /dev/null
call C:\Cygwin\home\kmoerder\ssh-agent.cmd
unison-2.9.1
The call to bash invokes the keychain in the .profile to get the keys ready 
then the call to ssh-agent.cmd defines the env variables for non-cygwin 
ssh-aware programs (such as unison).

Thanks,

...Karl

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--- keychain    2003-03-16 11:30:55.000000000 -0800
+++ /bin/keychain       2003-03-16 11:13:53.000000000 -0800
@@ -17,20 +17,22 @@
# simultaneously (only works if lockfile from the procmail package is
# available.
hostname=`uname -n`
if [ -z "`echo [EMAIL PROTECTED] | grep '\-\-local'`" ]
then
        pidf="${HOME}/.ssh-agent-${hostname}"
        cshpidf="${HOME}/.ssh-agent-csh-${hostname}"
+       batpidf="${HOME}/ssh-agent${hostname}.cmd"
        lockf="${HOME}/.keychain-lock-${hostname}"
else
        pidf="${HOME}/.ssh-agent"
        cshpidf="${HOME}/.ssh-agent-csh"
+       batpidf="${HOME}/ssh-agent.cmd"
        lockf="${HOME}/.keychain-lock"
fi
# perform lock if we have lockfile available
if type lockfile >/dev/null 2>&1; then
        lockfile -1 -r 30 -l 35 -s 2 "$lockf"
        if [ $? != 0 ]; then
                echo "Error: Couldn't get lock" >&2
@@ -83,17 +85,17 @@
#End special cygwin version
mypids=`ps $psopts 2>/dev/null | grep "[s]sh-agent" | awk '{print $2}'` > 
/dev/null 2>&1

if [ -n "`echo $* | grep '\-\-stop'`" ] || [ -n "`echo $* | grep '\-k'`" ]
then
	# --stop tells keychain to kill the existing ssh-agent(s), then exit
	kill $mypids > /dev/null 2>&1
-	rm -f "${pidf}" "${cshpidf}" "$lockf" 2> /dev/null
+	rm -f "${pidf}" "${cshpidf}" "${batpidf}" "$lockf" 2> /dev/null
	#`whoami` (rather than the $LOGNAME var) gives us the euid rather than the 
uid (what we want)
	if [ "$quiet_mode" = "no" ]
	then
		echo $E " ${GREEN}*${OFF} All ssh-agent(s) started by" `whoami` "are now 
stopped."
		echo
	fi
	exit 0
fi
@@ -219,25 +221,29 @@
		kill $mypids > /dev/null 2>&1
	fi
	if [ "$quiet_mode" = "no" ]
	then
		echo $E " ${GREEN}*${OFF} All previously running ssh-agent(s) have been 
stopped."
		echo $E " ${GREEN}*${OFF} Initializing ${pidf} file..."
	fi
	# "> pidf" doesn't work ash.  But it should work with any sh-compatible 
shell
-	> "$pidf" || { echo "$0: Cannot create ${pidf}; exiting." 1>&2; rm -f 
"$pidf" "$cshpidf" "$lockf" 2> /dev/null; exit 1; }
+	> "$pidf" || { echo "$0: Cannot create ${pidf}; exiting." 1>&2; rm -f 
"$pidf" "$cshpidf" "$batpidf" "$lockf" 2> /dev/null; exit 1; }
	[ "$quiet_mode" = "no" ] && echo $E " ${GREEN}*${OFF} Initializing 
${cshpidf} file..."
-	> "$cshpidf" || { echo "$0: Cannot create ${cshpidf}; exiting." 1>&2; rm 
-f "$pidf" "$cshpidf" "$lockf" 2> /dev/null; exit 1; }
-	chmod 0600 "$pidf" "$cshpidf"
+	> "$cshpidf" || { echo "$0: Cannot create ${cshpidf}; exiting." 1>&2; rm 
-f "$pidf" "$cshpidf" "$batpidf" "$lockf" 2> /dev/null; exit 1; }
+	[ "$quiet_mode" = "no" ] && echo $E " ${GREEN}*${OFF} Initializing 
${batpidf} file..."
+	> "$batpidf" || { echo "$0: Cannot create ${batpidf}; exiting." 1>&2; rm 
-f "$pidf" "$cshpidf" "$batpidf" "$lockf" 2> /dev/null; exit 1; }
+	chmod 0600 "$pidf" "$cshpidf" "$batpidf"
	[ "$quiet_mode" = "no" ] && echo $E " ${GREEN}*${OFF} Starting new 
ssh-agent"
	nohup ssh-agent -s | grep -v 'Agent pid' > "$pidf"
	. "$pidf"
	echo "setenv SSH_AUTH_SOCK $SSH_AUTH_SOCK;" > "$cshpidf"
	echo "setenv SSH_AGENT_PID $SSH_AGENT_PID;" >> "$cshpidf"
+	echo "@set SSH_AUTH_SOCK=$SSH_AUTH_SOCK" > "$batpidf"
+	echo "@set SSH_AGENT_PID=$SSH_AGENT_PID" >> "$batpidf"
fi

if [ -n "`echo $* | grep '\-\-clear'`" ]
then
        echo $E " ${GREEN}*${OFF} \c"
        ssh-add -D
fi


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