break out subfunctions from monkeysphere command

1 files changed, 8 insertions, 257 deletions

diff --git a/src/monkeysphere b/src/monkeysphere
index 46abf6f..bce0072 100755
--- a/src/monkeysphere
+++ b/src/monkeysphere
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-# monkeysphere: MonkeySphere client tool
+# monkeysphere: Monkeysphere client tool
 #
 # The monkeysphere scripts are written by:
 # Jameson Rollins <jrollins@fifthhorseman.net>
@@ -18,6 +18,9 @@ SYSSHAREDIR=${MONKEYSPHERE_SYSSHAREDIR:-"/usr/share/monkeysphere"}
 export SYSSHAREDIR
 . "${SYSSHAREDIR}/common" || exit 1
 
+# sharedir for host functions
+MSHAREDIR="${SYSSHAREDIR}/m"
+
 # UTC date in ISO 8601 format if needed
 DATE=$(date -u '+%FT%T')
 
@@ -56,261 +59,6 @@ subcommands:
 EOF
 }
 
-# import an existing ssh key as a gpg subkey
-import_subkey() {
-    local keyFile="~/.ssh/id_rsa"
-    local keyExpire
-    local keyID
-    local gpgOut
-    local userID
-
-    # get options
-    while true ; do
-	case "$1" in
-	    -f|--keyfile)
-		keyFile="$2"
-		shift 2
-		;;
-	    -e|--expire)
-		keyExpire="$2"
-		shift 2
-		;;
-	    *)
-		if [ "$(echo "$1" | cut -c 1)" = '-' ] ; then
-		    failure "Unknown option '$1'.
-Type '$PGRM help' for usage."
-		fi
-		break
-		;;
-	esac
-    done
-
-    log verbose "importing ssh key..."
-    fifoDir=$(mktemp -d ${TMPDIR:-/tmp}/tmp.XXXXXXXXXX)
-    (umask 077 && mkfifo "$fifoDir/pass")
-    ssh2openpgp | gpg --passphrase-fd 3 3< "$fifoDir/pass" --expert --command-fd 0 --import &
-
-    passphrase_prompt  "Please enter your passphrase for $keyID: " "$fifoDir/pass"
-
-    rm -rf "$fifoDir"
-    wait
-    log verbose "done."
-}
-
-# generate a subkey with the 'a' usage flags set
-gen_subkey(){
-    local keyLength
-    local keyExpire
-    local keyID
-    local gpgOut
-    local userID
-
-    # get options
-    while true ; do
-	case "$1" in
-	    -l|--length)
-		keyLength="$2"
-		shift 2
-		;;
-	    -e|--expire)
-		keyExpire="$2"
-		shift 2
-		;;
-	    *)
-		if [ "$(echo "$1" | cut -c 1)" = '-' ] ; then
-		    failure "Unknown option '$1'.
-Type '$PGRM help' for usage."
-		fi
-		break
-		;;
-	esac
-    done
-
-    case "$#" in
-	0)
-	    gpgSecOut=$(gpg --quiet --fixed-list-mode --list-secret-keys --with-colons 2>/dev/null | egrep '^sec:')
-	    ;;
-	1)
-	    gpgSecOut=$(gpg --quiet --fixed-list-mode --list-secret-keys --with-colons "$1" | egrep '^sec:') || failure
-	    ;;
-	*)
-	    failure "You must specify only a single primary key ID."
-	    ;;
-    esac
-
-    # check that only a single secret key was found
-    case $(echo "$gpgSecOut" | grep -c '^sec:') in
-	0)
-	    failure "No secret keys found.  Create an OpenPGP key with the following command:
- gpg --gen-key"
-	    ;;
-	1)
-	    keyID=$(echo "$gpgSecOut" | cut -d: -f5)
-	    ;;
-	*)
-	    echo "Multiple primary secret keys found:"
-	    echo "$gpgSecOut" | cut -d: -f5
-	    failure "Please specify which primary key to use."
-	    ;;
-    esac
-
-    # check that a valid authentication key does not already exist
-    IFS=$'\n'
-    for line in $(gpg --quiet --fixed-list-mode --list-keys --with-colons "$keyID") ; do
-	type=$(echo "$line" | cut -d: -f1)
-	validity=$(echo "$line" | cut -d: -f2)
-	usage=$(echo "$line" | cut -d: -f12)
-
-	# look at keys only
-	if [ "$type" != 'pub' -a "$type" != 'sub' ] ; then
-	    continue
-	fi
-	# check for authentication capability
-	if ! check_capability "$usage" 'a' ; then
-	    continue
-	fi
-	# if authentication key is valid, prompt to continue
-	if [ "$validity" = 'u' ] ; then
-	    echo "A valid authentication key already exists for primary key '$keyID'."
-	    read -p "Are you sure you would like to generate another one? (y/N) " OK; OK=${OK:N}
-	    if [ "${OK/y/Y}" != 'Y' ] ; then
-		failure "aborting."
-	    fi
-	    break
-	fi
-    done
-
-    # set subkey defaults
-    # prompt about key expiration if not specified
-    keyExpire=$(get_gpg_expiration "$keyExpire")
-
-    # generate the list of commands that will be passed to edit-key
-    editCommands=$(cat <<EOF
-addkey
-7
-S
-E
-A
-Q
-$keyLength
-$keyExpire
-save
-EOF
-)
-
-    log verbose "generating subkey..."
-    fifoDir=$(mktemp -d ${TMPDIR:-/tmp}/tmp.XXXXXXXXXX)
-    (umask 077 && mkfifo "$fifoDir/pass")
-    echo "$editCommands" | gpg --passphrase-fd 3 3< "$fifoDir/pass" --expert --command-fd 0 --edit-key "$keyID" &
-
-    # FIXME: this needs to fail more gracefully if the passphrase is incorrect
-    passphrase_prompt  "Please enter your passphrase for $keyID: " "$fifoDir/pass"
-
-    rm -rf "$fifoDir"
-    wait
-    log verbose "done."
-}
-
-subkey_to_ssh_agent() {
-    # try to add all authentication subkeys to the agent:
-
-    local sshaddresponse
-    local secretkeys
-    local authsubkeys
-    local workingdir
-    local keysuccess
-    local subkey
-    local publine
-    local kname
-
-    if ! test_gnu_dummy_s2k_extension ; then
-	failure "Your version of GnuTLS does not seem capable of using with gpg's exported subkeys.
-You may want to consider patching or upgrading to GnuTLS 2.6 or later.
-
-For more details, see:
- http://lists.gnu.org/archive/html/gnutls-devel/2008-08/msg00005.html"
-    fi
-
-    # if there's no agent running, don't bother:
-    if [ -z "$SSH_AUTH_SOCK" ] || ! which ssh-add >/dev/null ; then
-	failure "No ssh-agent available."
-    fi
-
-    # and if it looks like it's running, but we can't actually talk to
-    # it, bail out:
-    ssh-add -l >/dev/null
-    sshaddresponse="$?"
-    if [ "$sshaddresponse" = "2" ]; then
-	failure "Could not connect to ssh-agent"
-    fi
-    
-    # get list of secret keys (to work around https://bugs.g10code.com/gnupg/issue945):
-    secretkeys=$(gpg --list-secret-keys --with-colons --fixed-list-mode --fingerprint | \
-	grep '^fpr:' | cut -f10 -d: | awk '{ print "0x" $1 "!" }')
-
-    if [ -z "$secretkeys" ]; then
-	failure "You have no secret keys in your keyring!
-You might want to run 'gpg --gen-key'."
-    fi
-    
-    authsubkeys=$(gpg --list-secret-keys --with-colons --fixed-list-mode \
-	--fingerprint --fingerprint $secretkeys | \
-	cut -f1,5,10,12 -d: | grep -A1 '^ssb:[^:]*::[^:]*a[^:]*$' | \
-	grep '^fpr::' | cut -f3 -d: | sort -u)
-
-    if [ -z "$authsubkeys" ]; then
-	failure "no authentication-capable subkeys available.
-You might want to 'monkeysphere gen-subkey'"
-    fi
-
-    workingdir=$(mktemp -d ${TMPDIR:-/tmp}/tmp.XXXXXXXXXX)
-    umask 077
-    mkfifo "$workingdir/passphrase"
-    keysuccess=1
-
-    # FIXME: we're currently allowing any other options to get passed
-    # through to ssh-add.  should we limit it to known ones?  For
-    # example: -d or -c and/or -t <lifetime> 
-
-    for subkey in $authsubkeys; do 
-	# choose a label by which this key will be known in the agent:
-	# we are labelling the key by User ID instead of by
-	# fingerprint, but filtering out all / characters to make sure
-	# the filename is legit.
-
-	primaryuid=$(gpg --with-colons --list-key "0x${subkey}!" | grep '^pub:' | cut -f10 -d: | tr -d /)
-
-	#kname="[monkeysphere] $primaryuid"
-	kname="$primaryuid"
-
-	if [ "$1" = '-d' ]; then
-	    # we're removing the subkey:
-	    gpg --export "0x${subkey}!" | openpgp2ssh "$subkey" > "$workingdir/$kname"
-	    (cd "$workingdir" && ssh-add -d "$kname")
-	else
-	    # we're adding the subkey:
-	    mkfifo "$workingdir/$kname"
-	    gpg --quiet --passphrase-fd 3 3<"$workingdir/passphrase" \
-		--export-options export-reset-subkey-passwd,export-minimal,no-export-attributes \
-		--export-secret-subkeys "0x${subkey}!" | openpgp2ssh "$subkey" > "$workingdir/$kname" &
-	    (cd "$workingdir" && DISPLAY=nosuchdisplay SSH_ASKPASS=/bin/false ssh-add "$@" "$kname" </dev/null )&
-
-	    passphrase_prompt "Enter passphrase for key $kname: " "$workingdir/passphrase"
-	    wait %2
-	fi
-	keysuccess="$?"
-
-	rm -f "$workingdir/$kname"
-    done
-
-    rm -rf "$workingdir"
-
-    # FIXME: sort out the return values: we're just returning the
-    # success or failure of the final authentication subkey in this
-    # case.  What if earlier ones failed?
-    exit "$keysuccess"
-}
-
 ########################################################################
 # MAIN
 ########################################################################
@@ -419,15 +167,18 @@ case $COMMAND in
 	;;
 
     'import-subkey'|'i')
+	source "${MSHAREDIR}/import-key"
 	import_key "$@"
 	;;
 
     'gen-subkey'|'g')
+	source "${MSHAREDIR}/import_key"
 	gen_subkey "$@"
 	;;
 
     'ssh-proxycommand'|'p')
-	ssh-proxycommand "$@"
+	source "${MSHAREDIR}/ssh_proxycommand"
+	ssh_proxycommand "$@"
 	;;
 
     'subkey-to-ssh-agent'|'s')