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 [ "$1" = '--no-connect' ] ; then
34 MS_HOME=${MS_HOME:-"${HOME}/.config/monkeysphere"}
36 if [ -z "$HOST" ] ; then
37 log "host must be specified."
41 if [ -z "$PORT" ] ; then
42 log "port must be specified."
49 if [ "$PORT" != '22' ] ; then
53 # if the host is in the gpg keyring...
54 if gpg --list-key ="${URI}" 2>&1 >/dev/null ; then
55 # do not check the keyserver
56 CHECK_KEYSERVER="false"
57 # if the host is NOT in the keyring...
59 # if the host key is found in the known_hosts file...
60 # FIXME: this only works for default known_hosts location
61 hostKey=$(ssh-keygen -F "$HOST")
62 if [ "$hostKey" ] ; then
63 # do not check the keyserver
64 # FIXME: more nuanced checking should be done here to properly
65 # take into consideration hosts that join monkeysphere by
66 # converting an existing and known ssh key
67 CHECK_KEYSERVER="false"
69 # if the host key is not found in the known_hosts file...
72 CHECK_KEYSERVER="true"
75 export CHECK_KEYSERVER
77 # update the known_hosts file for the host
78 monkeysphere update-known_hosts "$HOST"
80 # exec a netcat passthrough to host for the ssh connection
81 if [ -z "$NO_CONNECT" ] ; then
82 exec nc "$HOST" "$PORT"