X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=src%2Fmonkeysphere;h=a25fd6a64257a780fc6628842f119218a1f198ee;hb=5fadec09dcd44c4dcad657a0f3d96878b592b77b;hp=f279d86395a249b5169df2fd9d26fa30b1aceb90;hpb=4793624c65673268128fb0146cd9bd1b3cfeb6c4;p=monkeysphere.git

diff --git a/src/monkeysphere b/src/monkeysphere
index f279d86..a25fd6a 100755
--- a/src/monkeysphere
+++ b/src/monkeysphere
@@ -1,20 +1,28 @@
-#!/bin/sh
+#!/bin/bash
+
+# monkeysphere: MonkeySphere client tool
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@fifthhorseman.net>
+#
+# They are Copyright 2008, and are all released under the GPL, version 3
+# or later.
 
 ########################################################################
 PGRM=$(basename $0)
 
-SHAREDIR=${SHAREDIR:-"/usr/share/monkeysphere"}
-export SHAREDIR
-. "${SHAREDIR}/common"
-
-GLOBAL_CONFIG=${GLOBAL_CONFIG:-"${ETC}"/monkeysphere.conf}
-[ -r "$GLOBAL_CONFIG" ] && . "$GLOBAL_CONFIG"
+SHARE=${MONKEYSPHERE_SHARE:-"/usr/share/monkeysphere"}
+export SHARE
+. "${SHARE}/common" || exit 1
 
 # date in UTF format if needed
 DATE=$(date -u '+%FT%T')
 
 # unset some environment variables that could screw things up
-GREP_OPTIONS=
+unset GREP_OPTIONS
+
+# default return code
+RETURN=0
 
 ########################################################################
 # FUNCTIONS
@@ -22,125 +30,217 @@ GREP_OPTIONS=
 
 usage() {
 cat <<EOF
-usage: $PGRM <subcommand> [args]
-Monkeysphere client tool.
+usage: $PGRM <subcommand> [options] [args]
+MonkeySphere client tool.
 
 subcommands:
-  update-known-hosts (k) [HOST]...           update known_hosts file
-  update-authorized-keys (a)                 update authorized_keys file
-  update-userid (u) [USERID]...              add/update userid to
-                                               authorized_user_ids
-  help (h,?)                                 this help
+  update-known_hosts (k) [HOST]...  update known_hosts file
+  update-authorized_keys (a)        update authorized_keys file
+  gen-subkey (g) KEYID              generate an 'a' capable subkey
+    -l|--length BITS                  key length in bits (2048)
+    -e|--expire EXPIRE                date to expire
+  help (h,?)                        this help
 
 EOF
 }
 
+# generate a subkey with the 'a' usage flags set
+# FIXME: this needs some tweaking to clean it up
+gen_subkey(){
+    local keyID
+    local gpgOut
+    local userID
+
+    keyID="$1"
+
+    gpgOut=$(gpg --quiet --fixed-list-mode --list-keys --with-colons \
+	"$keyID" 2> /dev/null)
+
+    # fail if there only "tru" lines are output from gpg, which
+    # indicates the key was not found.
+    if [ -z "$(echo "$gpgOut" | grep -v '^tru:')" ] ; then
+	failure "Key ID '$keyID' not found."
+    fi
+
+    # fail if multiple pub lines are returned, which means the id given
+    # is not unique
+    if [ $(echo "$gpgOut" | grep '^pub:' | wc -l) -gt '1' ] ; then
+	failure "Key ID '$keyID' is not unique."
+    fi
+
+    # prompt if an authentication subkey already exists
+    if echo "$gpgOut" | egrep "^(pub|sub):" | cut -d: -f 12 | grep -q a ; then
+	echo "An authentication subkey already exists for key '$keyID'."
+	read -p "Are you sure you would like to generate another one? (y/N) " OK; OK=${OK:N}
+	if [ "${OK/y/Y}" != 'Y' ] ; then
+	    failure "aborting."
+	fi
+    fi
+
+    # set subkey defaults
+    KEY_TYPE="RSA"
+    KEY_LENGTH=${KEY_LENGTH:-}
+    KEY_USAGE="auth"
+    # prompt about key expiration if not specified
+    if [ -z "$KEY_EXPIRE" ] ; then
+	cat <<EOF
+Please specify how long the key should be valid.
+         0 = key does not expire
+      <n>  = key expires in n days
+      <n>w = key expires in n weeks
+      <n>m = key expires in n months
+      <n>y = key expires in n years
+EOF
+	while [ -z "$KEY_EXPIRE" ] ; do
+	    read -p "Key is valid for? (0) " KEY_EXPIRE
+	    if ! test_gpg_expire ${KEY_EXPIRE:=0} ; then
+		echo "invalid value"
+		unset KEY_EXPIRE
+	    fi
+	done
+    elif ! test_gpg_expire "$KEY_EXPIRE" ; then
+	failure "invalid key expiration value '$KEY_EXPIRE'."
+    fi
+
+    # generate the list of commands that will be passed to edit-key
+    editCommands=$(cat <<EOF
+addkey
+7
+S
+E
+A
+Q
+$KEY_LENGTH
+$KEY_EXPIRE
+save
+EOF
+)
+
+    log "generating subkey..."
+    echo "$editCommands" | gpg --expert --command-fd 0 --edit-key "$keyID"
+    log "done."
+}
+
 ########################################################################
 # MAIN
 ########################################################################
 
+# unset variables that should be defined only in config file
+unset KEYSERVER
+unset CHECK_KEYSERVER
+unset KNOWN_HOSTS
+unset HASH_KNOWN_HOSTS
+unset AUTHORIZED_KEYS
+
+# load global config
+[ -r "${ETC}/monkeysphere.conf" ] && . "${ETC}/monkeysphere.conf"
+
+# set monkeysphere home directory
+MONKEYSPHERE_HOME=${MONKEYSPHERE_HOME:="${HOME}/.config/monkeysphere"}
+mkdir -p -m 0700 "$MONKEYSPHERE_HOME"
+
+# load local config
+[ -e ${MONKEYSPHERE_CONFIG:="${MONKEYSPHERE_HOME}/monkeysphere.conf"} ] && . "$MONKEYSPHERE_CONFIG"
+
+# set empty config variables with ones from the environment, or from
+# config file, or with defaults
+GNUPGHOME=${MONKEYSPHERE_GNUPGHOME:=${GNUPGHOME:="${HOME}/.gnupg"}}
+KEYSERVER=${MONKEYSPHERE_KEYSERVER:=${KEYSERVER:="subkeys.pgp.net"}}
+CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:=${CHECK_KEYSERVER:="true"}}
+KNOWN_HOSTS=${MONKEYSPHERE_KNOWN_HOSTS:=${KNOWN_HOSTS:="${HOME}/.ssh/known_hosts"}}
+HASH_KNOWN_HOSTS=${MONKEYSPHERE_HASH_KNOWN_HOSTS:=${HASH_KNOWN_HOSTS:="true"}}
+AUTHORIZED_KEYS=${MONKEYSPHERE_AUTHORIZED_KEYS:=${AUTHORIZED_KEYS:="${HOME}/.ssh/authorized_keys"}}
+
+# other variables not in config file
+AUTHORIZED_USER_IDS=${MONKEYSPHERE_AUTHORIZED_USER_IDS:="${MONKEYSPHERE_HOME}/authorized_user_ids"}
+REQUIRED_HOST_KEY_CAPABILITY=${MONKEYSPHERE_REQUIRED_HOST_KEY_CAPABILITY:="a"}
+REQUIRED_USER_KEY_CAPABILITY=${MONKEYSPHERE_REQUIRED_USER_KEY_CAPABILITY:="a"}
+
+# export GNUPGHOME and make sure gpg home exists with proper
+# permissions
+export GNUPGHOME
+mkdir -p -m 0700 "$GNUPGHOME"
+
+# get subcommand
 COMMAND="$1"
 [ "$COMMAND" ] || failure "Type '$PGRM help' for usage."
 shift
 
-# set ms home directory
-MS_HOME=${MS_HOME:-"$HOME"/.config/monkeysphere}
+# unset option variables
+unset KEY_LENGTH
+unset KEY_EXPIRE
 
-# load configuration file
-MS_CONF=${MS_CONF:-"$MS_HOME"/monkeysphere.conf}
-[ -e "$MS_CONF" ] && . "$MS_CONF"
+# get options for key generation and add-certifier functions
+TEMP=$(getopt -o l:e: -l length:,expire: -n "$PGRM" -- "$@")
 
-# set empty config variable with defaults
-AUTHORIZED_USER_IDS=${AUTHORIZED_USER_IDS:-"$MS_HOME"/authorized_user_ids}
-GNUPGHOME=${GNUPGHOME:-"$HOME"/.gnupg}
-KEYSERVER=${KEYSERVER:-subkeys.pgp.net}
-REQUIRED_KEY_CAPABILITY=${REQUIRED_KEY_CAPABILITY:-"e a"}
-USER_CONTROLLED_AUTHORIZED_KEYS=${USER_CONTROLLED_AUTHORIZED_KEYS:-%h/.ssh/authorized_keys}
-USER_KNOWN_HOSTS=${USER_KNOWN_HOSTS:-"$HOME"/.ssh/known_hosts}
-HASH_KNOWN_HOSTS=${HASH_KNOWN_HOSTS:-}
+if [ $? != 0 ] ; then
+    usage
+    exit 1
+fi
 
-export GNUPGHOME
+# Note the quotes around `$TEMP': they are essential!
+eval set -- "$TEMP"
 
-# stagging locations
-hostKeysCacheDir="$MS_HOME"/host_keys
-userKeysCacheDir="$MS_HOME"/user_keys
-msAuthorizedKeys="$MS_HOME"/authorized_keys
-
-# make sure gpg home exists with proper permissions
-mkdir -p -m 0700 "$GNUPGHOME"
+while true ; do
+    case "$1" in
+	-l|--length)
+	    KEY_LENGTH="$2"
+	    shift 2
+	    ;;
+	-e|--expire)
+	    KEY_EXPIRE="$2"
+	    shift 2
+	    ;;
+	--)
+	    shift
+	    ;;
+        *)
+            break
+            ;;
+    esac
+done
 
 case $COMMAND in
-    'update-known-hosts'|'k')
+    'update-known_hosts'|'update-known-hosts'|'k')
 	MODE='known_hosts'
 
-        # touch the known_hosts file to make sure it exists
-	touch "$USER_KNOWN_HOSTS"
-
         # if hosts are specified on the command line, process just
         # those hosts
 	if [ "$1" ] ; then
-            for host ; do
-		process_host "$host" "$hostKeysCacheDir"
-	    done
+	    update_known_hosts "$@"
+	    RETURN="$?"
 
-        # otherwise, if no hosts are specified, process the user
-        # known_hosts file
+        # otherwise, if no hosts are specified, process every host
+        # in the user's known_hosts file
 	else
-	    if [ ! -s "$USER_KNOWN_HOSTS" ] ; then
-		failure "known_hosts file '$USER_KNOWN_HOSTS' is empty."
+	    if [ ! -s "$KNOWN_HOSTS" ] ; then
+		failure "known_hosts file '$KNOWN_HOSTS' is empty or does not exist."
 	    fi
-	    log "processing known_hosts file..."
-	    process_known_hosts "$USER_KNOWN_HOSTS" "$hostKeysCacheDir"
+
+	    process_known_hosts
+	    RETURN="$?"
 	fi
 	;;
 
-    'update-authorized-keys'|'a')
+    'update-authorized_keys'|'update-authorized-keys'|'a')
 	MODE='authorized_keys'
 
-	log "processing authorized_user_ids file..."
-
-        # make sure authorized_user_ids file exists
+        # fail if the authorized_user_ids file is empty
 	if [ ! -s "$AUTHORIZED_USER_IDS" ] ; then
-	    log "authorized_user_ids file is empty or does not exist."
-	    exit
+	    failure "$AUTHORIZED_USER_IDS is empty or does not exist."
 	fi
 
-	process_authorized_ids "$AUTHORIZED_USER_IDS" "$userKeysCacheDir"
-
-        # write output key file
-	log "writing monkeysphere authorized_keys file... "
-	touch "$msAuthorizedKeys"
-	if [ "$(ls "$userKeysCacheDir")" ] ; then
-	    log -n "adding gpg keys... "
-	    cat "$userKeysCacheDir"/* > "$msAuthorizedKeys"
-	    echo "done."
-	else
-	log "no gpg keys to add."
-	fi
-	if [ "$USER_CONTROLLED_AUTHORIZED_KEYS" ] ; then
-	    userAuthorizedKeys=${USER_CONTROLLED_AUTHORIZED_KEYS/\%h/"$HOME"}
-	    if [ -s "$userAuthorizedKeys" ] ; then
-		log -n "adding user authorized_keys file... "
-		cat "$userAuthorizedKeys" >> "$msAuthorizedKeys"
-		echo "done."
-	    fi
-	fi
-	log "monkeysphere authorized_keys file generated:"
-	log "$msAuthorizedKeys"
+	# process authorized_user_ids file
+	process_authorized_user_ids "$AUTHORIZED_USER_IDS"
+	RETURN="$?"
 	;;
 
-    'update-userid'|'u')
-	if [ -z "$1" ] ; then
-	    failure "you must specify at least one userid."
+    'gen-subkey'|'g')
+	keyID="$1"
+	if [ -z "$keyID" ] ; then
+	    failure "You must specify the key ID of your primary key."
 	fi
-	for userID ; do
-	    if ! grep -q "^${userID}\$" "$AUTHORIZED_USER_IDS" ; then
-		log "userid '$userID' not in authorized_user_ids file."
-		continue
-	    fi
-	    log "processing user id: '$userID'"
-	    process_user_id "$userID" "$userKeysCacheDir" > /dev/null
-	done
+	gen_subkey "$keyID"
 	;;
 
     'help'|'h'|'?')
@@ -149,6 +249,8 @@ case $COMMAND in
 
     *)
         failure "Unknown command: '$COMMAND'
-Type 'cereal-admin help' for usage."
+Type '$PGRM help' for usage."
         ;;
 esac
+
+exit "$RETURN"