switched monkeysphere-ssh-proxycommand to #!/bin/bash, as it has become more complex.

[monkeysphere.git] / src / monkeysphere-ssh-proxycommand

diff --git a/src/monkeysphere-ssh-proxycommand b/src/monkeysphere-ssh-proxycommand
index 4cbcd5138bda3a5904eb3741c5a64993c67d0484..cc81020327af0890fd26725b9715219414503bb5 100755 (executable)
--- a/src/monkeysphere-ssh-proxycommand
+++ b/src/monkeysphere-ssh-proxycommand
@@ -1,4 +1,4 @@
-#!/bin/sh -e
+#!/bin/bash
 
 # monkeysphere-ssh-proxycommand: MonkeySphere ssh ProxyCommand hook
 #
@@ -13,15 +13,22 @@
 # established.  Can be added to ~/.ssh/config as follows:
 #  ProxyCommand monkeysphere-ssh-proxycommand %h %p
 
+########################################################################
+SHARE=${MONKEYSPHERE_SHARE:-"/usr/share/monkeysphere"}
+. "${SHARE}/common" || exit 1
+
+########################################################################
+
 usage() {
 cat <<EOF >&2
 usage: ssh -o ProxyCommand="$(basename $0) %h %p" ...
 EOF
 }
 
-log() {
-    echo "$@" >&2
-}
+########################################################################
+
+# export the monkeysphere log level
+export MONKEYSPHERE_LOG_LEVEL
 
 if [ "$1" = '--no-connect' ] ; then
     NO_CONNECT='true'
@@ -31,50 +38,64 @@ fi
 HOST="$1"
 PORT="$2"
 
+MS_HOME=${MS_HOME:-"${HOME}/.config/monkeysphere"}
+
 if [ -z "$HOST" ] ; then
-    log "host must be specified."
+    echo "Host not specified." >&2
     usage
-    exit 1
+    exit 255
 fi
 if [ -z "$PORT" ] ; then
-    log "port must be specified."
-    usage
-    exit 1
+    PORT=22
 fi
 
 # set the host URI
-URI="ssh://${HOST}"
 if [ "$PORT" != '22' ] ; then
-    URI="${URI}:$PORT"
+    HOSTP="${HOST}:${PORT}"
+else
+    HOSTP="${HOST}"
 fi
+URI="ssh://${HOSTP}"
 
 # if the host is in the gpg keyring...
-if gpg --list-key ="${URI}" >/dev/null ; then
+if gpg --list-key ="${URI}" 2>&1 >/dev/null ; then
     # do not check the keyserver
     CHECK_KEYSERVER="false"
+
 # if the host is NOT in the keyring...
 else
     # if the host key is found in the known_hosts file...
     # FIXME: this only works for default known_hosts location
-    hostKey=$(ssh-keygen -F "$HOST")
+    hostKey=$(ssh-keygen -F "$HOST" 2>/dev/null)
+
     if [ "$hostKey" ] ; then
-       # if the check keyserver variable is NOT set to true...
-       if  [ "$CHECK_KEYSERVER" != 'true' ] ; then
-           # schedule a keyserver check for host at a later time
-           echo "monkeysphere update-known_hosts $HOST" | at noon
-       fi
+       # do not check the keyserver
+       # FIXME: more nuanced checking should be done here to properly
+       # take into consideration hosts that join monkeysphere by
+       # converting an existing and known ssh key
+       CHECK_KEYSERVER="false"
+
     # if the host key is not found in the known_hosts file...
     else
        # check the keyserver
        CHECK_KEYSERVER="true"
     fi
 fi
-export CHECK_KEYSERVER
+
+MONKEYSPHERE_CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:="$CHECK_KEYSERVER"}
+export MONKEYSPHERE_CHECK_KEYSERVER
 
 # update the known_hosts file for the host
-monkeysphere update-known_hosts "$HOST"
+monkeysphere update-known_hosts "$HOSTP"
 
 # exec a netcat passthrough to host for the ssh connection
 if [ -z "$NO_CONNECT" ] ; then
-    exec nc "$HOST" "$PORT"
+    if (which nc 2>/dev/null >/dev/null); then
+       exec nc "$HOST" "$PORT"
+    elif (which socat 2>/dev/null >/dev/null); then
+       exec socat STDIO "TCP:$HOST:$PORT"
+    else
+       echo "Neither netcat nor socat found -- could not complete monkeysphere-ssh-proxycommand connection to $HOST:$PORT" >&2
+       exit 255
+    fi
 fi