3 # monkeysphere-ssh-proxycommand: MonkeySphere ssh ProxyCommand hook
5 # The monkeysphere scripts are written by:
6 # Jameson Rollins <jrollins@fifthhorseman.net>
8 # They are Copyright 2008, and are all released under the GPL, version 3
11 # This is meant to be run as an ssh ProxyCommand to initiate a
12 # monkeysphere known_hosts update before an ssh connection to host is
13 # established. Can be added to ~/.ssh/config as follows:
14 # ProxyCommand monkeysphere-ssh-proxycommand %h %p
18 usage: ssh -o ProxyCommand="$(basename $0) %h %p" ...
26 if [ "$1" = '--no-connect' ] ; then
34 if [ -z "$HOST" ] ; then
35 log "host must be specified."
39 if [ -z "$PORT" ] ; then
40 log "port must be specified."
47 if [ "$PORT" != '22' ] ; then
51 # if the host is in the gpg keyring...
52 if gpg --list-key ="${URI}" 2>&1 >/dev/null ; then
53 # do not check the keyserver
54 CHECK_KEYSERVER="false"
55 # if the host is NOT in the keyring...
57 # if the host key is found in the known_hosts file...
58 # FIXME: this only works for default known_hosts location
59 hostKey=$(ssh-keygen -F "$HOST")
60 if [ "$hostKey" ] ; then
61 # if the check keyserver variable is NOT set to true...
62 if [ "$CHECK_KEYSERVER" != 'true' ] ; then
63 # schedule a keyserver check for host at a later time
64 echo "monkeysphere update-known_hosts $HOST" | at noon
66 # if the host key is not found in the known_hosts file...
69 CHECK_KEYSERVER="true"
72 export CHECK_KEYSERVER
74 # update the known_hosts file for the host
75 monkeysphere update-known_hosts "$HOST"
77 # exec a netcat passthrough to host for the ssh connection
78 if [ -z "$NO_CONNECT" ] ; then
79 exec nc "$HOST" "$PORT"