mkdir -p $(DESTDIR)$(PREFIX)/share/doc/monkeysphere
install src/monkeysphere src/keytrans/openpgp2ssh src/keytrans/pem2openpgp $(DESTDIR)$(PREFIX)/bin
install src/monkeysphere-host src/monkeysphere-authentication $(DESTDIR)$(PREFIX)/sbin
- install -m 0644 src/common $(DESTDIR)$(PREFIX)/share/monkeysphere
- install -m 0644 src/subcommands/m/* $(DESTDIR)$(PREFIX)/share/monkeysphere/m
- install -m 0644 src/subcommands/mh/* $(DESTDIR)$(PREFIX)/share/monkeysphere/mh
- install -m 0644 src/subcommands/ma/* $(DESTDIR)$(PREFIX)/share/monkeysphere/ma
+ install -m 0644 src/share/common $(DESTDIR)$(PREFIX)/share/monkeysphere
+ install -m 0644 src/share/m/* $(DESTDIR)$(PREFIX)/share/monkeysphere/m
+ install -m 0644 src/share/mh/* $(DESTDIR)$(PREFIX)/share/monkeysphere/mh
+ install -m 0644 src/share/ma/* $(DESTDIR)$(PREFIX)/share/monkeysphere/ma
install doc/* $(DESTDIR)$(PREFIX)/share/doc/monkeysphere
install -m 0644 etc/monkeysphere.conf $(DESTDIR)$(ETCPREFIX)/etc/monkeysphere/monkeysphere.conf$(ETCSUFFIX)
install -m 0644 etc/monkeysphere-host.conf $(DESTDIR)$(ETCPREFIX)/etc/monkeysphere/monkeysphere-host.conf$(ETCSUFFIX)
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# Shared sh functions for the monkeysphere
-#
-# Written by
-# Jameson Rollins <jrollins@finestructure.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# Copyright 2008, released under the GPL, version 3 or later
-
-# all-caps variables are meant to be user supplied (ie. from config
-# file) and are considered global
-
-########################################################################
-### COMMON VARIABLES
-
-# managed directories
-SYSCONFIGDIR=${MONKEYSPHERE_SYSCONFIGDIR:-"/etc/monkeysphere"}
-export SYSCONFIGDIR
-
-# monkeysphere version
-VERSION=__VERSION__
-
-########################################################################
-### UTILITY FUNCTIONS
-
-# failure function. exits with code 255, unless specified otherwise.
-failure() {
- [ "$1" ] && echo "$1" >&2
- exit ${2:-'255'}
-}
-
-# write output to stderr based on specified LOG_LEVEL the first
-# parameter is the priority of the output, and everything else is what
-# is echoed to stderr
-log() {
- local priority
- local level
- local output
- local alllevels
- local found=
-
- # don't include SILENT in alllevels: it's handled separately
- # list in decreasing verbosity (all caps).
- # separate with $IFS explicitly, since we do some fancy footwork
- # elsewhere.
- alllevels="DEBUG${IFS}VERBOSE${IFS}INFO${IFS}ERROR"
-
- # translate lowers to uppers in global log level
- LOG_LEVEL=$(echo "$LOG_LEVEL" | tr "[:lower:]" "[:upper:]")
-
- # just go ahead and return if the log level is silent
- if [ "$LOG_LEVEL" = 'SILENT' ] ; then
- return
- fi
-
- for level in $alllevels ; do
- if [ "$LOG_LEVEL" = "$level" ] ; then
- found=true
- fi
- done
- if [ -z "$found" ] ; then
- # default to INFO:
- LOG_LEVEL=INFO
- fi
-
- # get priority from first parameter, translating all lower to
- # uppers
- priority=$(echo "$1" | tr "[:lower:]" "[:upper:]")
- shift
-
- # scan over available levels
- for level in $alllevels ; do
- # output if the log level matches, set output to true
- # this will output for all subsequent loops as well.
- if [ "$LOG_LEVEL" = "$level" ] ; then
- output=true
- fi
- if [ "$priority" = "$level" -a "$output" = 'true' ] ; then
- echo -n "ms: " >&2
- echo "$@" >&2
- fi
- done
-}
-
-# cut out all comments(#) and blank lines from standard input
-meat() {
- grep -v -e "^[[:space:]]*#" -e '^$' "$1"
-}
-
-# cut a specified line from standard input
-cutline() {
- head --line="$1" "$2" | tail -1
-}
-
-# this is a wrapper for doing lock functions.
-#
-# it lets us depend on either lockfile-progs (preferred) or procmail's
-# lockfile, and should
-lock() {
- local use_lockfileprogs=true
- local action="$1"
- local file="$2"
-
- if ! ( which lockfile-create >/dev/null 2>/dev/null ) ; then
- if ! ( which lockfile >/dev/null ); then
- failure "Neither lockfile-create nor lockfile are in the path!"
- fi
- use_lockfileprogs=
- fi
-
- case "$action" in
- create)
- if [ -n "$use_lockfileprogs" ] ; then
- lockfile-create "$file" || failure "unable to lock '$file'"
- else
- lockfile -r 20 "${file}.lock" || failure "unable to lock '$file'"
- fi
- ;;
- touch)
- if [ -n "$use_lockfileprogs" ] ; then
- lockfile-touch --oneshot "$file"
- else
- : Nothing to do here
- fi
- ;;
- remove)
- if [ -n "$use_lockfileprogs" ] ; then
- lockfile-remove "$file"
- else
- rm -f "${file}.lock"
- fi
- ;;
- *)
- failure "bad argument for lock subfunction '$action'"
- esac
-}
-
-
-# for portability, between gnu date and BSD date.
-# arguments should be: number longunits format
-
-# e.g. advance_date 20 seconds +%F
-advance_date() {
- local gnutry
- local number="$1"
- local longunits="$2"
- local format="$3"
- local shortunits
-
- # try things the GNU way first
- if date -d "$number $longunits" "$format" >/dev/null 2>&1; then
- date -d "$number $longunits" "$format"
- else
- # otherwise, convert to (a limited version of) BSD date syntax:
- case "$longunits" in
- years)
- shortunits=y
- ;;
- months)
- shortunits=m
- ;;
- weeks)
- shortunits=w
- ;;
- days)
- shortunits=d
- ;;
- hours)
- shortunits=H
- ;;
- minutes)
- shortunits=M
- ;;
- seconds)
- shortunits=S
- ;;
- *)
- # this is a longshot, and will likely fail; oh well.
- shortunits="$longunits"
- esac
- date "-v+${number}${shortunits}" "$format"
- fi
-}
-
-
-# check that characters are in a string (in an AND fashion).
-# used for checking key capability
-# check_capability capability a [b...]
-check_capability() {
- local usage
- local capcheck
-
- usage="$1"
- shift 1
-
- for capcheck ; do
- if echo "$usage" | grep -q -v "$capcheck" ; then
- return 1
- fi
- done
- return 0
-}
-
-# hash of a file
-file_hash() {
- md5sum "$1" 2> /dev/null
-}
-
-# convert escaped characters in pipeline from gpg output back into
-# original character
-# FIXME: undo all escape character translation in with-colons gpg
-# output
-gpg_unescape() {
- sed 's/\\x3a/:/g'
-}
-
-# convert nasty chars into gpg-friendly form in pipeline
-# FIXME: escape everything, not just colons!
-gpg_escape() {
- sed 's/:/\\x3a/g'
-}
-
-# prompt for GPG-formatted expiration, and emit result on stdout
-get_gpg_expiration() {
- local keyExpire
-
- keyExpire="$1"
-
- if [ -z "$keyExpire" ]; then
- cat >&2 <<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 "$keyExpire" ] ; do
- read -p "Key is valid for? (0) " keyExpire
- if ! test_gpg_expire ${keyExpire:=0} ; then
- echo "invalid value" >&2
- unset keyExpire
- fi
- done
- elif ! test_gpg_expire "$keyExpire" ; then
- failure "invalid key expiration value '$keyExpire'."
- fi
-
- echo "$keyExpire"
-}
-
-passphrase_prompt() {
- local prompt="$1"
- local fifo="$2"
- local PASS
-
- if [ "$DISPLAY" ] && which "${SSH_ASKPASS:-ssh-askpass}" >/dev/null; then
- "${SSH_ASKPASS:-ssh-askpass}" "$prompt" > "$fifo"
- else
- read -s -p "$prompt" PASS
- # Uses the builtin echo, so should not put the passphrase into
- # the process table. I think. --dkg
- echo "$PASS" > "$fifo"
- fi
-}
-
-test_gnu_dummy_s2k_extension() {
-
-# this block contains a demonstration private key that has had the
-# primary key stripped out using the GNU S2K extension known as
-# "gnu-dummy" (see /usr/share/doc/gnupg/DETAILS.gz). The subkey is
-# present in cleartext, however.
-
-# openpgp2ssh will be able to deal with this based on whether the
-# local copy of GnuTLS contains read_s2k support that can handle it.
-
-# read up on that here:
-
-# http://lists.gnu.org/archive/html/gnutls-devel/2008-08/msg00005.html
-
-echo "
------BEGIN PGP PRIVATE KEY BLOCK-----
-Version: GnuPG v1.4.9 (GNU/Linux)
-
-lQCVBEO3YdABBACRqqEnucag4+vyZny2M67Pai5+5suIRRvY+Ly8Ms5MvgCi3EVV
-xT05O/+0ShiRaf+QicCOFrhbU9PZzzU+seEvkeW2UCu4dQfILkmj+HBEIltGnHr3
-G0yegHj5pnqrcezERURf2e17gGFWX91cXB9Cm721FPXczuKraphKwCA9PwARAQAB
-/gNlAkdOVQG0OURlbW9uc3RyYXRpb24gS2V5IGZvciBTMksgR05VIGV4dGVuc2lv
-biAxMDAxIC0tIGdudS1kdW1teYi8BBMBAgAmBQJDt2HQAhsDBQkB4TOABgsJCAcD
-AgQVAggDBBYCAwECHgECF4AACgkQQZUwSa4UDezTOQP/TMQXUVrWzHYZGopoPZ2+
-ZS3qddiznBHsgb7MGYg1KlTiVJSroDUBCHIUJvdQKZV9zrzrFl47D07x6hGyUPHV
-aZXvuITW8t1o5MMHkCy3pmJ2KgfDvdUxrBvLfgPMICA4c6zA0mWquee43syEW9NY
-g3q61iPlQwD1J1kX1wlimLCdAdgEQ7dh0AEEANAwa63zlQbuy1Meliy8otwiOa+a
-mH6pxxUgUNggjyjO5qx+rl25mMjvGIRX4/L1QwIBXJBVi3SgvJW1COZxZqBYqj9U
-8HVT07mWKFEDf0rZLeUE2jTm16cF9fcW4DQhW+sfYm+hi2sY3HeMuwlUBK9KHfW2
-+bGeDzVZ4pqfUEudABEBAAEAA/0bemib+wxub9IyVFUp7nPobjQC83qxLSNzrGI/
-RHzgu/5CQi4tfLOnwbcQsLELfker2hYnjsLrT9PURqK4F7udrWEoZ1I1LymOtLG/
-4tNZ7Mnul3wRC2tCn7FKx8sGJwGh/3li8vZ6ALVJAyOia5TZ/buX0+QZzt6+hPKk
-7MU1WQIA4bUBjtrsqDwro94DvPj3/jBnMZbXr6WZIItLNeVDUcM8oHL807Am97K1
-ueO/f6v1sGAHG6lVPTmtekqPSTWBfwIA7CGFvEyvSALfB8NUa6jtk27NCiw0csql
-kuhCmwXGMVOiryKEfegkIahf2bAd/gnWHPrpWp7bUE20v8YoW22I4wIAhnm5Wr5Q
-Sy7EHDUxmJm5TzadFp9gq08qNzHBpXSYXXJ3JuWcL1/awUqp3tE1I6zZ0hZ38Ia6
-SdBMN88idnhDPqPoiKUEGAECAA8FAkO3YdACGyAFCQHhM4AACgkQQZUwSa4UDezm
-vQP/ZhK+2ly9oI2z7ZcNC/BJRch0/ybQ3haahII8pXXmOThpZohr/LUgoWgCZdXg
-vP6yiszNk2tIs8KphCAw7Lw/qzDC2hEORjWO4f46qk73RAgSqG/GyzI4ltWiDhqn
-vnQCFl3+QFSe4zinqykHnLwGPMXv428d/ZjkIc2ju8dRsn4=
-=CR5w
------END PGP PRIVATE KEY BLOCK-----
-" | openpgp2ssh 4129E89D17C1D591 >/dev/null 2>/dev/null
-
-}
-
-# remove all lines with specified string from specified file
-remove_line() {
- local file
- local string
- local tempfile
-
- file="$1"
- string="$2"
-
- if [ -z "$file" -o -z "$string" ] ; then
- return 1
- fi
-
- if [ ! -e "$file" ] ; then
- return 1
- fi
-
- # if the string is in the file...
- if grep -q -F "$string" "$file" 2> /dev/null ; then
- tempfile=$(mktemp "${file}.XXXXXXX") || \
- failure "Unable to make temp file '${file}.XXXXXXX'"
-
- # remove the line with the string, and return 0
- grep -v -F "$string" "$file" >"$tempfile"
- cat "$tempfile" > "$file"
- rm "$tempfile"
- return 0
- # otherwise return 1
- else
- return 1
- fi
-}
-
-# remove all lines with MonkeySphere strings in file
-remove_monkeysphere_lines() {
- local file
- local tempfile
-
- file="$1"
-
- if [ -z "$file" ] ; then
- return 1
- fi
-
- if [ ! -e "$file" ] ; then
- return 1
- fi
-
- tempfile=$(mktemp "${file}.XXXXXXX") || \
- failure "Could not make temporary file '${file}.XXXXXXX'."
-
- egrep -v '^MonkeySphere[[:digit:]]{4}(-[[:digit:]]{2}){2}T[[:digit:]]{2}(:[[:digit:]]{2}){2}$' \
- "$file" >"$tempfile"
- cat "$tempfile" > "$file"
- rm "$tempfile"
-}
-
-# translate ssh-style path variables %h and %u
-translate_ssh_variables() {
- local uname
- local home
-
- uname="$1"
- path="$2"
-
- # get the user's home directory
- userHome=$(getent passwd "$uname" | cut -d: -f6)
-
- # translate '%u' to user name
- path=${path/\%u/"$uname"}
- # translate '%h' to user home directory
- path=${path/\%h/"$userHome"}
-
- echo "$path"
-}
-
-# test that a string to conforms to GPG's expiration format
-test_gpg_expire() {
- echo "$1" | egrep -q "^[0-9]+[mwy]?$"
-}
-
-# check that a file is properly owned, and that all it's parent
-# directories are not group/other writable
-check_key_file_permissions() {
- local uname
- local path
- local stat
- local access
- local gAccess
- local oAccess
-
- # function to check that the given permission corresponds to writability
- is_write() {
- [ "$1" = "w" ]
- }
-
- uname="$1"
- path="$2"
-
- # return 255 if cannot stat file
- if ! stat=$(ls -ld "$path" 2>/dev/null) ; then
- log error "could not stat path '$path'."
- return 255
- fi
-
- owner=$(echo "$stat" | awk '{ print $3 }')
- gAccess=$(echo "$stat" | cut -c6)
- oAccess=$(echo "$stat" | cut -c9)
-
- # return 1 if path has invalid owner
- if [ "$owner" != "$uname" -a "$owner" != 'root' ] ; then
- log error "improper ownership on path '$path'."
- return 1
- fi
-
- # return 2 if path has group or other writability
- if is_write "$gAccess" || is_write "$oAccess" ; then
- log error "improper group or other writability on path '$path'."
- return 2
- fi
-
- # return zero if all clear, or go to next path
- if [ "$path" = '/' ] ; then
- return 0
- else
- check_key_file_permissions "$uname" $(dirname "$path")
- fi
-}
-
-### CONVERSION UTILITIES
-
-# output the ssh key for a given key ID
-gpg2ssh() {
- local keyID
-
- keyID="$1"
-
- gpg --export "$keyID" | openpgp2ssh "$keyID" 2> /dev/null
-}
-
-# output known_hosts line from ssh key
-ssh2known_hosts() {
- local host
- local key
-
- host="$1"
- key="$2"
-
- echo -n "$host "
- echo -n "$key" | tr -d '\n'
- echo " MonkeySphere${DATE}"
-}
-
-# output authorized_keys line from ssh key
-ssh2authorized_keys() {
- local userID
- local key
-
- userID="$1"
- key="$2"
-
- echo -n "$key" | tr -d '\n'
- echo " MonkeySphere${DATE} ${userID}"
-}
-
-# convert key from gpg to ssh known_hosts format
-gpg2known_hosts() {
- local host
- local keyID
-
- host="$1"
- keyID="$2"
-
- # NOTE: it seems that ssh-keygen -R removes all comment fields from
- # all lines in the known_hosts file. why?
- # NOTE: just in case, the COMMENT can be matched with the
- # following regexp:
- # '^MonkeySphere[[:digit:]]{4}(-[[:digit:]]{2}){2}T[[:digit:]]{2}(:[[:digit:]]{2}){2}$'
- echo -n "$host "
- gpg2ssh "$keyID" | tr -d '\n'
- echo " MonkeySphere${DATE}"
-}
-
-# convert key from gpg to ssh authorized_keys format
-gpg2authorized_keys() {
- local userID
- local keyID
-
- userID="$1"
- keyID="$2"
-
- # NOTE: just in case, the COMMENT can be matched with the
- # following regexp:
- # '^MonkeySphere[[:digit:]]{4}(-[[:digit:]]{2}){2}T[[:digit:]]{2}(:[[:digit:]]{2}){2}$'
- gpg2ssh "$keyID" | tr -d '\n'
- echo " MonkeySphere${DATE} ${userID}"
-}
-
-### GPG UTILITIES
-
-# retrieve all keys with given user id from keyserver
-# FIXME: need to figure out how to retrieve all matching keys
-# (not just first N (5 in this case))
-gpg_fetch_userid() {
- local userID
- local returnCode
-
- if [ "$CHECK_KEYSERVER" != 'true' ] ; then
- return 0
- fi
-
- userID="$1"
-
- log verbose " checking keyserver $KEYSERVER... "
- echo 1,2,3,4,5 | \
- gpg --quiet --batch --with-colons \
- --command-fd 0 --keyserver "$KEYSERVER" \
- --search ="$userID" > /dev/null 2>&1
- returnCode="$?"
-
- # if the user is the monkeysphere user, then update the
- # monkeysphere user's trustdb
- if [ $(id -un) = "$MONKEYSPHERE_USER" ] ; then
- gpg_authentication "--check-trustdb" > /dev/null 2>&1
- fi
-
- return "$returnCode"
-}
-
-########################################################################
-### PROCESSING FUNCTIONS
-
-# userid and key policy checking
-# the following checks policy on the returned keys
-# - checks that full key has appropriate valididy (u|f)
-# - checks key has specified capability (REQUIRED_*_KEY_CAPABILITY)
-# - checks that requested user ID has appropriate validity
-# (see /usr/share/doc/gnupg/DETAILS.gz)
-# output is one line for every found key, in the following format:
-#
-# flag:sshKey
-#
-# "flag" is an acceptability flag, 0 = ok, 1 = bad
-# "sshKey" is the translated gpg key
-#
-# all log output must go to stderr, as stdout is used to pass the
-# flag:sshKey to the calling function.
-#
-# expects global variable: "MODE"
-process_user_id() {
- local userID
- local requiredCapability
- local requiredPubCapability
- local gpgOut
- local type
- local validity
- local keyid
- local uidfpr
- local usage
- local keyOK
- local uidOK
- local lastKey
- local lastKeyOK
- local fingerprint
-
- userID="$1"
-
- # set the required key capability based on the mode
- if [ "$MODE" = 'known_hosts' ] ; then
- requiredCapability="$REQUIRED_HOST_KEY_CAPABILITY"
- elif [ "$MODE" = 'authorized_keys' ] ; then
- requiredCapability="$REQUIRED_USER_KEY_CAPABILITY"
- fi
- requiredPubCapability=$(echo "$requiredCapability" | tr "[:lower:]" "[:upper:]")
-
- # fetch the user ID if necessary/requested
- gpg_fetch_userid "$userID"
-
- # output gpg info for (exact) userid and store
- gpgOut=$(gpg --list-key --fixed-list-mode --with-colon \
- --with-fingerprint --with-fingerprint \
- ="$userID" 2>/dev/null)
-
- # if the gpg query return code is not 0, return 1
- if [ "$?" -ne 0 ] ; then
- log verbose " no primary keys found."
- return 1
- fi
-
- # loop over all lines in the gpg output and process.
- echo "$gpgOut" | cut -d: -f1,2,5,10,12 | \
- while IFS=: read -r type validity keyid uidfpr usage ; do
- # process based on record type
- case $type in
- 'pub') # primary keys
- # new key, wipe the slate
- keyOK=
- uidOK=
- lastKey=pub
- lastKeyOK=
- fingerprint=
-
- log verbose " primary key found: $keyid"
-
- # if overall key is not valid, skip
- if [ "$validity" != 'u' -a "$validity" != 'f' ] ; then
- log debug " - unacceptable primary key validity ($validity)."
- continue
- fi
- # if overall key is disabled, skip
- if check_capability "$usage" 'D' ; then
- log debug " - key disabled."
- continue
- fi
- # if overall key capability is not ok, skip
- if ! check_capability "$usage" $requiredPubCapability ; then
- log debug " - unacceptable primary key capability ($usage)."
- continue
- fi
-
- # mark overall key as ok
- keyOK=true
-
- # mark primary key as ok if capability is ok
- if check_capability "$usage" $requiredCapability ; then
- lastKeyOK=true
- fi
- ;;
- 'uid') # user ids
- if [ "$lastKey" != pub ] ; then
- log verbose " ! got a user ID after a sub key?! user IDs should only follow primary keys!"
- continue
- fi
- # if an acceptable user ID was already found, skip
- if [ "$uidOK" = 'true' ] ; then
- continue
- fi
- # if the user ID does matches...
- if [ "$(echo "$uidfpr" | gpg_unescape)" = "$userID" ] ; then
- # and the user ID validity is ok
- if [ "$validity" = 'u' -o "$validity" = 'f' ] ; then
- # mark user ID acceptable
- uidOK=true
- else
- log debug " - unacceptable user ID validity ($validity)."
- fi
- else
- continue
- fi
-
- # output a line for the primary key
- # 0 = ok, 1 = bad
- if [ "$keyOK" -a "$uidOK" -a "$lastKeyOK" ] ; then
- log verbose " * acceptable primary key."
- if [ -z "$sshKey" ] ; then
- log error " ! primary key could not be translated (not RSA or DSA?)."
- else
- echo "0:${sshKey}"
- fi
- else
- log debug " - unacceptable primary key."
- if [ -z "$sshKey" ] ; then
- log debug " ! primary key could not be translated (not RSA or DSA?)."
- else
- echo "1:${sshKey}"
- fi
- fi
- ;;
- 'sub') # sub keys
- # unset acceptability of last key
- lastKey=sub
- lastKeyOK=
- fingerprint=
-
- # don't bother with sub keys if the primary key is not valid
- if [ "$keyOK" != true ] ; then
- continue
- fi
-
- # don't bother with sub keys if no user ID is acceptable:
- if [ "$uidOK" != true ] ; then
- continue
- fi
-
- # if sub key validity is not ok, skip
- if [ "$validity" != 'u' -a "$validity" != 'f' ] ; then
- log debug " - unacceptable sub key validity ($validity)."
- continue
- fi
- # if sub key capability is not ok, skip
- if ! check_capability "$usage" $requiredCapability ; then
- log debug " - unacceptable sub key capability ($usage)."
- continue
- fi
-
- # mark sub key as ok
- lastKeyOK=true
- ;;
- 'fpr') # key fingerprint
- fingerprint="$uidfpr"
-
- sshKey=$(gpg2ssh "$fingerprint")
-
- # if the last key was the pub key, skip
- if [ "$lastKey" = pub ] ; then
- continue
- fi
-
- # output a line for the sub key
- # 0 = ok, 1 = bad
- if [ "$keyOK" -a "$uidOK" -a "$lastKeyOK" ] ; then
- log verbose " * acceptable sub key."
- if [ -z "$sshKey" ] ; then
- log error " ! sub key could not be translated (not RSA or DSA?)."
- else
- echo "0:${sshKey}"
- fi
- else
- log debug " - unacceptable sub key."
- if [ -z "$sshKey" ] ; then
- log debug " ! sub key could not be translated (not RSA or DSA?)."
- else
- echo "1:${sshKey}"
- fi
- fi
- ;;
- esac
- done | sort -t: -k1 -n -r
- # NOTE: this last sort is important so that the "good" keys (key
- # flag '0') come last. This is so that they take precedence when
- # being processed in the key files over "bad" keys (key flag '1')
-}
-
-# process a single host in the known_host file
-process_host_known_hosts() {
- local host
- local userID
- local noKey=
- local nKeys
- local nKeysOK
- local ok
- local sshKey
- local tmpfile
-
- host="$1"
- userID="ssh://${host}"
-
- log verbose "processing: $host"
-
- nKeys=0
- nKeysOK=0
-
- IFS=$'\n'
- for line in $(process_user_id "${userID}") ; do
- # note that key was found
- nKeys=$((nKeys+1))
-
- ok=$(echo "$line" | cut -d: -f1)
- sshKey=$(echo "$line" | cut -d: -f2)
-
- if [ -z "$sshKey" ] ; then
- continue
- fi
-
- # remove any old host key line, and note if removed nothing is
- # removed
- remove_line "$KNOWN_HOSTS" "$sshKey" || noKey=true
-
- # if key OK, add new host line
- if [ "$ok" -eq '0' ] ; then
- # note that key was found ok
- nKeysOK=$((nKeysOK+1))
-
- # hash if specified
- if [ "$HASH_KNOWN_HOSTS" = 'true' ] ; then
- # FIXME: this is really hackish cause ssh-keygen won't
- # hash from stdin to stdout
- tmpfile=$(mktemp ${TMPDIR:-/tmp}/tmp.XXXXXXXXXX)
- ssh2known_hosts "$host" "$sshKey" > "$tmpfile"
- ssh-keygen -H -f "$tmpfile" 2> /dev/null
- cat "$tmpfile" >> "$KNOWN_HOSTS"
- rm -f "$tmpfile" "${tmpfile}.old"
- else
- ssh2known_hosts "$host" "$sshKey" >> "$KNOWN_HOSTS"
- fi
-
- # log if this is a new key to the known_hosts file
- if [ "$noKey" ] ; then
- log info "* new key for $host added to known_hosts file."
- fi
- fi
- done
-
- # if at least one key was found...
- if [ "$nKeys" -gt 0 ] ; then
- # if ok keys were found, return 0
- if [ "$nKeysOK" -gt 0 ] ; then
- return 0
- # else return 2
- else
- return 2
- fi
- # if no keys were found, return 1
- else
- return 1
- fi
-}
-
-# update the known_hosts file for a set of hosts listed on command
-# line
-update_known_hosts() {
- local nHosts
- local nHostsOK
- local nHostsBAD
- local fileCheck
- local host
-
- # the number of hosts specified on command line
- nHosts="$#"
-
- nHostsOK=0
- nHostsBAD=0
-
- # create a lockfile on known_hosts:
- lock create "$KNOWN_HOSTS"
- # FIXME: we're discarding any pre-existing EXIT trap; is this bad?
- trap "lock remove $KNOWN_HOSTS" EXIT
-
- # note pre update file checksum
- fileCheck="$(file_hash "$KNOWN_HOSTS")"
-
- for host ; do
- # process the host
- process_host_known_hosts "$host"
- # note the result
- case "$?" in
- 0)
- nHostsOK=$((nHostsOK+1))
- ;;
- 2)
- nHostsBAD=$((nHostsBAD+1))
- ;;
- esac
-
- # touch the lockfile, for good measure.
- lock touch "$KNOWN_HOSTS"
- done
-
- # remove the lockfile and the trap
- lock remove "$KNOWN_HOSTS"
- trap - EXIT
-
- # note if the known_hosts file was updated
- if [ "$(file_hash "$KNOWN_HOSTS")" != "$fileCheck" ] ; then
- log debug "known_hosts file updated."
- fi
-
- # if an acceptable host was found, return 0
- if [ "$nHostsOK" -gt 0 ] ; then
- return 0
- # else if no ok hosts were found...
- else
- # if no bad host were found then no hosts were found at all,
- # and return 1
- if [ "$nHostsBAD" -eq 0 ] ; then
- return 1
- # else if at least one bad host was found, return 2
- else
- return 2
- fi
- fi
-}
-
-# process hosts from a known_hosts file
-process_known_hosts() {
- local hosts
-
- log debug "processing known_hosts file..."
-
- hosts=$(meat "$KNOWN_HOSTS" | cut -d ' ' -f 1 | grep -v '^|.*$' | tr , ' ' | tr '\n' ' ')
-
- if [ -z "$hosts" ] ; then
- log debug "no hosts to process."
- return
- fi
-
- # take all the hosts from the known_hosts file (first
- # field), grep out all the hashed hosts (lines starting
- # with '|')...
- update_known_hosts $hosts
-}
-
-# process uids for the authorized_keys file
-process_uid_authorized_keys() {
- local userID
- local nKeys
- local nKeysOK
- local ok
- local sshKey
-
- userID="$1"
-
- log verbose "processing: $userID"
-
- nKeys=0
- nKeysOK=0
-
- IFS=$'\n'
- for line in $(process_user_id "$userID") ; do
- # note that key was found
- nKeys=$((nKeys+1))
-
- ok=$(echo "$line" | cut -d: -f1)
- sshKey=$(echo "$line" | cut -d: -f2)
-
- if [ -z "$sshKey" ] ; then
- continue
- fi
-
- # remove the old host key line
- remove_line "$AUTHORIZED_KEYS" "$sshKey"
-
- # if key OK, add new host line
- if [ "$ok" -eq '0' ] ; then
- # note that key was found ok
- nKeysOK=$((nKeysOK+1))
-
- ssh2authorized_keys "$userID" "$sshKey" >> "$AUTHORIZED_KEYS"
- fi
- done
-
- # if at least one key was found...
- if [ "$nKeys" -gt 0 ] ; then
- # if ok keys were found, return 0
- if [ "$nKeysOK" -gt 0 ] ; then
- return 0
- # else return 2
- else
- return 2
- fi
- # if no keys were found, return 1
- else
- return 1
- fi
-}
-
-# update the authorized_keys files from a list of user IDs on command
-# line
-update_authorized_keys() {
- local userID
- local nIDs
- local nIDsOK
- local nIDsBAD
- local fileCheck
-
- # the number of ids specified on command line
- nIDs="$#"
-
- nIDsOK=0
- nIDsBAD=0
-
- # create a lockfile on authorized_keys
- lock create "$AUTHORIZED_KEYS"
- # FIXME: we're discarding any pre-existing EXIT trap; is this bad?
- trap "lock remove $AUTHORIZED_KEYS" EXIT
-
- # note pre update file checksum
- fileCheck="$(file_hash "$AUTHORIZED_KEYS")"
-
- # remove any monkeysphere lines from authorized_keys file
- remove_monkeysphere_lines "$AUTHORIZED_KEYS"
-
- for userID ; do
- # process the user ID, change return code if key not found for
- # user ID
- process_uid_authorized_keys "$userID"
-
- # note the result
- case "$?" in
- 0)
- nIDsOK=$((nIDsOK+1))
- ;;
- 2)
- nIDsBAD=$((nIDsBAD+1))
- ;;
- esac
-
- # touch the lockfile, for good measure.
- lock touch "$AUTHORIZED_KEYS"
- done
-
- # remove the lockfile and the trap
- lock remove "$AUTHORIZED_KEYS"
- trap - EXIT
-
- # note if the authorized_keys file was updated
- if [ "$(file_hash "$AUTHORIZED_KEYS")" != "$fileCheck" ] ; then
- log debug "authorized_keys file updated."
- fi
-
- # if an acceptable id was found, return 0
- if [ "$nIDsOK" -gt 0 ] ; then
- return 0
- # else if no ok ids were found...
- else
- # if no bad ids were found then no ids were found at all, and
- # return 1
- if [ "$nIDsBAD" -eq 0 ] ; then
- return 1
- # else if at least one bad id was found, return 2
- else
- return 2
- fi
- fi
-}
-
-# process an authorized_user_ids file for authorized_keys
-process_authorized_user_ids() {
- local line
- local nline
- local userIDs
-
- authorizedUserIDs="$1"
-
- log debug "processing authorized_user_ids file..."
-
- if ! meat "$authorizedUserIDs" > /dev/null ; then
- log debug " no user IDs to process."
- return
- fi
-
- nline=0
-
- # extract user IDs from authorized_user_ids file
- IFS=$'\n'
- for line in $(meat "$authorizedUserIDs") ; do
- userIDs["$nline"]="$line"
- nline=$((nline+1))
- done
-
- update_authorized_keys "${userIDs[@]}"
-}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Shared sh functions for the monkeysphere
+#
+# Written by
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# Copyright 2008, released under the GPL, version 3 or later
+
+# all-caps variables are meant to be user supplied (ie. from config
+# file) and are considered global
+
+########################################################################
+### COMMON VARIABLES
+
+# managed directories
+SYSCONFIGDIR=${MONKEYSPHERE_SYSCONFIGDIR:-"/etc/monkeysphere"}
+export SYSCONFIGDIR
+
+# monkeysphere version
+VERSION=__VERSION__
+
+########################################################################
+### UTILITY FUNCTIONS
+
+# failure function. exits with code 255, unless specified otherwise.
+failure() {
+ [ "$1" ] && echo "$1" >&2
+ exit ${2:-'255'}
+}
+
+# write output to stderr based on specified LOG_LEVEL the first
+# parameter is the priority of the output, and everything else is what
+# is echoed to stderr
+log() {
+ local priority
+ local level
+ local output
+ local alllevels
+ local found=
+
+ # don't include SILENT in alllevels: it's handled separately
+ # list in decreasing verbosity (all caps).
+ # separate with $IFS explicitly, since we do some fancy footwork
+ # elsewhere.
+ alllevels="DEBUG${IFS}VERBOSE${IFS}INFO${IFS}ERROR"
+
+ # translate lowers to uppers in global log level
+ LOG_LEVEL=$(echo "$LOG_LEVEL" | tr "[:lower:]" "[:upper:]")
+
+ # just go ahead and return if the log level is silent
+ if [ "$LOG_LEVEL" = 'SILENT' ] ; then
+ return
+ fi
+
+ for level in $alllevels ; do
+ if [ "$LOG_LEVEL" = "$level" ] ; then
+ found=true
+ fi
+ done
+ if [ -z "$found" ] ; then
+ # default to INFO:
+ LOG_LEVEL=INFO
+ fi
+
+ # get priority from first parameter, translating all lower to
+ # uppers
+ priority=$(echo "$1" | tr "[:lower:]" "[:upper:]")
+ shift
+
+ # scan over available levels
+ for level in $alllevels ; do
+ # output if the log level matches, set output to true
+ # this will output for all subsequent loops as well.
+ if [ "$LOG_LEVEL" = "$level" ] ; then
+ output=true
+ fi
+ if [ "$priority" = "$level" -a "$output" = 'true' ] ; then
+ echo -n "ms: " >&2
+ echo "$@" >&2
+ fi
+ done
+}
+
+# cut out all comments(#) and blank lines from standard input
+meat() {
+ grep -v -e "^[[:space:]]*#" -e '^$' "$1"
+}
+
+# cut a specified line from standard input
+cutline() {
+ head --line="$1" "$2" | tail -1
+}
+
+# this is a wrapper for doing lock functions.
+#
+# it lets us depend on either lockfile-progs (preferred) or procmail's
+# lockfile, and should
+lock() {
+ local use_lockfileprogs=true
+ local action="$1"
+ local file="$2"
+
+ if ! ( which lockfile-create >/dev/null 2>/dev/null ) ; then
+ if ! ( which lockfile >/dev/null ); then
+ failure "Neither lockfile-create nor lockfile are in the path!"
+ fi
+ use_lockfileprogs=
+ fi
+
+ case "$action" in
+ create)
+ if [ -n "$use_lockfileprogs" ] ; then
+ lockfile-create "$file" || failure "unable to lock '$file'"
+ else
+ lockfile -r 20 "${file}.lock" || failure "unable to lock '$file'"
+ fi
+ ;;
+ touch)
+ if [ -n "$use_lockfileprogs" ] ; then
+ lockfile-touch --oneshot "$file"
+ else
+ : Nothing to do here
+ fi
+ ;;
+ remove)
+ if [ -n "$use_lockfileprogs" ] ; then
+ lockfile-remove "$file"
+ else
+ rm -f "${file}.lock"
+ fi
+ ;;
+ *)
+ failure "bad argument for lock subfunction '$action'"
+ esac
+}
+
+
+# for portability, between gnu date and BSD date.
+# arguments should be: number longunits format
+
+# e.g. advance_date 20 seconds +%F
+advance_date() {
+ local gnutry
+ local number="$1"
+ local longunits="$2"
+ local format="$3"
+ local shortunits
+
+ # try things the GNU way first
+ if date -d "$number $longunits" "$format" >/dev/null 2>&1; then
+ date -d "$number $longunits" "$format"
+ else
+ # otherwise, convert to (a limited version of) BSD date syntax:
+ case "$longunits" in
+ years)
+ shortunits=y
+ ;;
+ months)
+ shortunits=m
+ ;;
+ weeks)
+ shortunits=w
+ ;;
+ days)
+ shortunits=d
+ ;;
+ hours)
+ shortunits=H
+ ;;
+ minutes)
+ shortunits=M
+ ;;
+ seconds)
+ shortunits=S
+ ;;
+ *)
+ # this is a longshot, and will likely fail; oh well.
+ shortunits="$longunits"
+ esac
+ date "-v+${number}${shortunits}" "$format"
+ fi
+}
+
+
+# check that characters are in a string (in an AND fashion).
+# used for checking key capability
+# check_capability capability a [b...]
+check_capability() {
+ local usage
+ local capcheck
+
+ usage="$1"
+ shift 1
+
+ for capcheck ; do
+ if echo "$usage" | grep -q -v "$capcheck" ; then
+ return 1
+ fi
+ done
+ return 0
+}
+
+# hash of a file
+file_hash() {
+ md5sum "$1" 2> /dev/null
+}
+
+# convert escaped characters in pipeline from gpg output back into
+# original character
+# FIXME: undo all escape character translation in with-colons gpg
+# output
+gpg_unescape() {
+ sed 's/\\x3a/:/g'
+}
+
+# convert nasty chars into gpg-friendly form in pipeline
+# FIXME: escape everything, not just colons!
+gpg_escape() {
+ sed 's/:/\\x3a/g'
+}
+
+# prompt for GPG-formatted expiration, and emit result on stdout
+get_gpg_expiration() {
+ local keyExpire
+
+ keyExpire="$1"
+
+ if [ -z "$keyExpire" ]; then
+ cat >&2 <<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 "$keyExpire" ] ; do
+ read -p "Key is valid for? (0) " keyExpire
+ if ! test_gpg_expire ${keyExpire:=0} ; then
+ echo "invalid value" >&2
+ unset keyExpire
+ fi
+ done
+ elif ! test_gpg_expire "$keyExpire" ; then
+ failure "invalid key expiration value '$keyExpire'."
+ fi
+
+ echo "$keyExpire"
+}
+
+passphrase_prompt() {
+ local prompt="$1"
+ local fifo="$2"
+ local PASS
+
+ if [ "$DISPLAY" ] && which "${SSH_ASKPASS:-ssh-askpass}" >/dev/null; then
+ "${SSH_ASKPASS:-ssh-askpass}" "$prompt" > "$fifo"
+ else
+ read -s -p "$prompt" PASS
+ # Uses the builtin echo, so should not put the passphrase into
+ # the process table. I think. --dkg
+ echo "$PASS" > "$fifo"
+ fi
+}
+
+test_gnu_dummy_s2k_extension() {
+
+# this block contains a demonstration private key that has had the
+# primary key stripped out using the GNU S2K extension known as
+# "gnu-dummy" (see /usr/share/doc/gnupg/DETAILS.gz). The subkey is
+# present in cleartext, however.
+
+# openpgp2ssh will be able to deal with this based on whether the
+# local copy of GnuTLS contains read_s2k support that can handle it.
+
+# read up on that here:
+
+# http://lists.gnu.org/archive/html/gnutls-devel/2008-08/msg00005.html
+
+echo "
+-----BEGIN PGP PRIVATE KEY BLOCK-----
+Version: GnuPG v1.4.9 (GNU/Linux)
+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+=CR5w
+-----END PGP PRIVATE KEY BLOCK-----
+" | openpgp2ssh 4129E89D17C1D591 >/dev/null 2>/dev/null
+
+}
+
+# remove all lines with specified string from specified file
+remove_line() {
+ local file
+ local string
+ local tempfile
+
+ file="$1"
+ string="$2"
+
+ if [ -z "$file" -o -z "$string" ] ; then
+ return 1
+ fi
+
+ if [ ! -e "$file" ] ; then
+ return 1
+ fi
+
+ # if the string is in the file...
+ if grep -q -F "$string" "$file" 2> /dev/null ; then
+ tempfile=$(mktemp "${file}.XXXXXXX") || \
+ failure "Unable to make temp file '${file}.XXXXXXX'"
+
+ # remove the line with the string, and return 0
+ grep -v -F "$string" "$file" >"$tempfile"
+ cat "$tempfile" > "$file"
+ rm "$tempfile"
+ return 0
+ # otherwise return 1
+ else
+ return 1
+ fi
+}
+
+# remove all lines with MonkeySphere strings in file
+remove_monkeysphere_lines() {
+ local file
+ local tempfile
+
+ file="$1"
+
+ if [ -z "$file" ] ; then
+ return 1
+ fi
+
+ if [ ! -e "$file" ] ; then
+ return 1
+ fi
+
+ tempfile=$(mktemp "${file}.XXXXXXX") || \
+ failure "Could not make temporary file '${file}.XXXXXXX'."
+
+ egrep -v '^MonkeySphere[[:digit:]]{4}(-[[:digit:]]{2}){2}T[[:digit:]]{2}(:[[:digit:]]{2}){2}$' \
+ "$file" >"$tempfile"
+ cat "$tempfile" > "$file"
+ rm "$tempfile"
+}
+
+# translate ssh-style path variables %h and %u
+translate_ssh_variables() {
+ local uname
+ local home
+
+ uname="$1"
+ path="$2"
+
+ # get the user's home directory
+ userHome=$(getent passwd "$uname" | cut -d: -f6)
+
+ # translate '%u' to user name
+ path=${path/\%u/"$uname"}
+ # translate '%h' to user home directory
+ path=${path/\%h/"$userHome"}
+
+ echo "$path"
+}
+
+# test that a string to conforms to GPG's expiration format
+test_gpg_expire() {
+ echo "$1" | egrep -q "^[0-9]+[mwy]?$"
+}
+
+# check that a file is properly owned, and that all it's parent
+# directories are not group/other writable
+check_key_file_permissions() {
+ local uname
+ local path
+ local stat
+ local access
+ local gAccess
+ local oAccess
+
+ # function to check that the given permission corresponds to writability
+ is_write() {
+ [ "$1" = "w" ]
+ }
+
+ uname="$1"
+ path="$2"
+
+ # return 255 if cannot stat file
+ if ! stat=$(ls -ld "$path" 2>/dev/null) ; then
+ log error "could not stat path '$path'."
+ return 255
+ fi
+
+ owner=$(echo "$stat" | awk '{ print $3 }')
+ gAccess=$(echo "$stat" | cut -c6)
+ oAccess=$(echo "$stat" | cut -c9)
+
+ # return 1 if path has invalid owner
+ if [ "$owner" != "$uname" -a "$owner" != 'root' ] ; then
+ log error "improper ownership on path '$path'."
+ return 1
+ fi
+
+ # return 2 if path has group or other writability
+ if is_write "$gAccess" || is_write "$oAccess" ; then
+ log error "improper group or other writability on path '$path'."
+ return 2
+ fi
+
+ # return zero if all clear, or go to next path
+ if [ "$path" = '/' ] ; then
+ return 0
+ else
+ check_key_file_permissions "$uname" $(dirname "$path")
+ fi
+}
+
+### CONVERSION UTILITIES
+
+# output the ssh key for a given key ID
+gpg2ssh() {
+ local keyID
+
+ keyID="$1"
+
+ gpg --export "$keyID" | openpgp2ssh "$keyID" 2> /dev/null
+}
+
+# output known_hosts line from ssh key
+ssh2known_hosts() {
+ local host
+ local key
+
+ host="$1"
+ key="$2"
+
+ echo -n "$host "
+ echo -n "$key" | tr -d '\n'
+ echo " MonkeySphere${DATE}"
+}
+
+# output authorized_keys line from ssh key
+ssh2authorized_keys() {
+ local userID
+ local key
+
+ userID="$1"
+ key="$2"
+
+ echo -n "$key" | tr -d '\n'
+ echo " MonkeySphere${DATE} ${userID}"
+}
+
+# convert key from gpg to ssh known_hosts format
+gpg2known_hosts() {
+ local host
+ local keyID
+
+ host="$1"
+ keyID="$2"
+
+ # NOTE: it seems that ssh-keygen -R removes all comment fields from
+ # all lines in the known_hosts file. why?
+ # NOTE: just in case, the COMMENT can be matched with the
+ # following regexp:
+ # '^MonkeySphere[[:digit:]]{4}(-[[:digit:]]{2}){2}T[[:digit:]]{2}(:[[:digit:]]{2}){2}$'
+ echo -n "$host "
+ gpg2ssh "$keyID" | tr -d '\n'
+ echo " MonkeySphere${DATE}"
+}
+
+# convert key from gpg to ssh authorized_keys format
+gpg2authorized_keys() {
+ local userID
+ local keyID
+
+ userID="$1"
+ keyID="$2"
+
+ # NOTE: just in case, the COMMENT can be matched with the
+ # following regexp:
+ # '^MonkeySphere[[:digit:]]{4}(-[[:digit:]]{2}){2}T[[:digit:]]{2}(:[[:digit:]]{2}){2}$'
+ gpg2ssh "$keyID" | tr -d '\n'
+ echo " MonkeySphere${DATE} ${userID}"
+}
+
+### GPG UTILITIES
+
+# retrieve all keys with given user id from keyserver
+# FIXME: need to figure out how to retrieve all matching keys
+# (not just first N (5 in this case))
+gpg_fetch_userid() {
+ local userID
+ local returnCode
+
+ if [ "$CHECK_KEYSERVER" != 'true' ] ; then
+ return 0
+ fi
+
+ userID="$1"
+
+ log verbose " checking keyserver $KEYSERVER... "
+ echo 1,2,3,4,5 | \
+ gpg --quiet --batch --with-colons \
+ --command-fd 0 --keyserver "$KEYSERVER" \
+ --search ="$userID" > /dev/null 2>&1
+ returnCode="$?"
+
+ # if the user is the monkeysphere user, then update the
+ # monkeysphere user's trustdb
+ if [ $(id -un) = "$MONKEYSPHERE_USER" ] ; then
+ gpg_authentication "--check-trustdb" > /dev/null 2>&1
+ fi
+
+ return "$returnCode"
+}
+
+########################################################################
+### PROCESSING FUNCTIONS
+
+# userid and key policy checking
+# the following checks policy on the returned keys
+# - checks that full key has appropriate valididy (u|f)
+# - checks key has specified capability (REQUIRED_*_KEY_CAPABILITY)
+# - checks that requested user ID has appropriate validity
+# (see /usr/share/doc/gnupg/DETAILS.gz)
+# output is one line for every found key, in the following format:
+#
+# flag:sshKey
+#
+# "flag" is an acceptability flag, 0 = ok, 1 = bad
+# "sshKey" is the translated gpg key
+#
+# all log output must go to stderr, as stdout is used to pass the
+# flag:sshKey to the calling function.
+#
+# expects global variable: "MODE"
+process_user_id() {
+ local userID
+ local requiredCapability
+ local requiredPubCapability
+ local gpgOut
+ local type
+ local validity
+ local keyid
+ local uidfpr
+ local usage
+ local keyOK
+ local uidOK
+ local lastKey
+ local lastKeyOK
+ local fingerprint
+
+ userID="$1"
+
+ # set the required key capability based on the mode
+ if [ "$MODE" = 'known_hosts' ] ; then
+ requiredCapability="$REQUIRED_HOST_KEY_CAPABILITY"
+ elif [ "$MODE" = 'authorized_keys' ] ; then
+ requiredCapability="$REQUIRED_USER_KEY_CAPABILITY"
+ fi
+ requiredPubCapability=$(echo "$requiredCapability" | tr "[:lower:]" "[:upper:]")
+
+ # fetch the user ID if necessary/requested
+ gpg_fetch_userid "$userID"
+
+ # output gpg info for (exact) userid and store
+ gpgOut=$(gpg --list-key --fixed-list-mode --with-colon \
+ --with-fingerprint --with-fingerprint \
+ ="$userID" 2>/dev/null)
+
+ # if the gpg query return code is not 0, return 1
+ if [ "$?" -ne 0 ] ; then
+ log verbose " no primary keys found."
+ return 1
+ fi
+
+ # loop over all lines in the gpg output and process.
+ echo "$gpgOut" | cut -d: -f1,2,5,10,12 | \
+ while IFS=: read -r type validity keyid uidfpr usage ; do
+ # process based on record type
+ case $type in
+ 'pub') # primary keys
+ # new key, wipe the slate
+ keyOK=
+ uidOK=
+ lastKey=pub
+ lastKeyOK=
+ fingerprint=
+
+ log verbose " primary key found: $keyid"
+
+ # if overall key is not valid, skip
+ if [ "$validity" != 'u' -a "$validity" != 'f' ] ; then
+ log debug " - unacceptable primary key validity ($validity)."
+ continue
+ fi
+ # if overall key is disabled, skip
+ if check_capability "$usage" 'D' ; then
+ log debug " - key disabled."
+ continue
+ fi
+ # if overall key capability is not ok, skip
+ if ! check_capability "$usage" $requiredPubCapability ; then
+ log debug " - unacceptable primary key capability ($usage)."
+ continue
+ fi
+
+ # mark overall key as ok
+ keyOK=true
+
+ # mark primary key as ok if capability is ok
+ if check_capability "$usage" $requiredCapability ; then
+ lastKeyOK=true
+ fi
+ ;;
+ 'uid') # user ids
+ if [ "$lastKey" != pub ] ; then
+ log verbose " ! got a user ID after a sub key?! user IDs should only follow primary keys!"
+ continue
+ fi
+ # if an acceptable user ID was already found, skip
+ if [ "$uidOK" = 'true' ] ; then
+ continue
+ fi
+ # if the user ID does matches...
+ if [ "$(echo "$uidfpr" | gpg_unescape)" = "$userID" ] ; then
+ # and the user ID validity is ok
+ if [ "$validity" = 'u' -o "$validity" = 'f' ] ; then
+ # mark user ID acceptable
+ uidOK=true
+ else
+ log debug " - unacceptable user ID validity ($validity)."
+ fi
+ else
+ continue
+ fi
+
+ # output a line for the primary key
+ # 0 = ok, 1 = bad
+ if [ "$keyOK" -a "$uidOK" -a "$lastKeyOK" ] ; then
+ log verbose " * acceptable primary key."
+ if [ -z "$sshKey" ] ; then
+ log error " ! primary key could not be translated (not RSA or DSA?)."
+ else
+ echo "0:${sshKey}"
+ fi
+ else
+ log debug " - unacceptable primary key."
+ if [ -z "$sshKey" ] ; then
+ log debug " ! primary key could not be translated (not RSA or DSA?)."
+ else
+ echo "1:${sshKey}"
+ fi
+ fi
+ ;;
+ 'sub') # sub keys
+ # unset acceptability of last key
+ lastKey=sub
+ lastKeyOK=
+ fingerprint=
+
+ # don't bother with sub keys if the primary key is not valid
+ if [ "$keyOK" != true ] ; then
+ continue
+ fi
+
+ # don't bother with sub keys if no user ID is acceptable:
+ if [ "$uidOK" != true ] ; then
+ continue
+ fi
+
+ # if sub key validity is not ok, skip
+ if [ "$validity" != 'u' -a "$validity" != 'f' ] ; then
+ log debug " - unacceptable sub key validity ($validity)."
+ continue
+ fi
+ # if sub key capability is not ok, skip
+ if ! check_capability "$usage" $requiredCapability ; then
+ log debug " - unacceptable sub key capability ($usage)."
+ continue
+ fi
+
+ # mark sub key as ok
+ lastKeyOK=true
+ ;;
+ 'fpr') # key fingerprint
+ fingerprint="$uidfpr"
+
+ sshKey=$(gpg2ssh "$fingerprint")
+
+ # if the last key was the pub key, skip
+ if [ "$lastKey" = pub ] ; then
+ continue
+ fi
+
+ # output a line for the sub key
+ # 0 = ok, 1 = bad
+ if [ "$keyOK" -a "$uidOK" -a "$lastKeyOK" ] ; then
+ log verbose " * acceptable sub key."
+ if [ -z "$sshKey" ] ; then
+ log error " ! sub key could not be translated (not RSA or DSA?)."
+ else
+ echo "0:${sshKey}"
+ fi
+ else
+ log debug " - unacceptable sub key."
+ if [ -z "$sshKey" ] ; then
+ log debug " ! sub key could not be translated (not RSA or DSA?)."
+ else
+ echo "1:${sshKey}"
+ fi
+ fi
+ ;;
+ esac
+ done | sort -t: -k1 -n -r
+ # NOTE: this last sort is important so that the "good" keys (key
+ # flag '0') come last. This is so that they take precedence when
+ # being processed in the key files over "bad" keys (key flag '1')
+}
+
+# process a single host in the known_host file
+process_host_known_hosts() {
+ local host
+ local userID
+ local noKey=
+ local nKeys
+ local nKeysOK
+ local ok
+ local sshKey
+ local tmpfile
+
+ host="$1"
+ userID="ssh://${host}"
+
+ log verbose "processing: $host"
+
+ nKeys=0
+ nKeysOK=0
+
+ IFS=$'\n'
+ for line in $(process_user_id "${userID}") ; do
+ # note that key was found
+ nKeys=$((nKeys+1))
+
+ ok=$(echo "$line" | cut -d: -f1)
+ sshKey=$(echo "$line" | cut -d: -f2)
+
+ if [ -z "$sshKey" ] ; then
+ continue
+ fi
+
+ # remove any old host key line, and note if removed nothing is
+ # removed
+ remove_line "$KNOWN_HOSTS" "$sshKey" || noKey=true
+
+ # if key OK, add new host line
+ if [ "$ok" -eq '0' ] ; then
+ # note that key was found ok
+ nKeysOK=$((nKeysOK+1))
+
+ # hash if specified
+ if [ "$HASH_KNOWN_HOSTS" = 'true' ] ; then
+ # FIXME: this is really hackish cause ssh-keygen won't
+ # hash from stdin to stdout
+ tmpfile=$(mktemp ${TMPDIR:-/tmp}/tmp.XXXXXXXXXX)
+ ssh2known_hosts "$host" "$sshKey" > "$tmpfile"
+ ssh-keygen -H -f "$tmpfile" 2> /dev/null
+ cat "$tmpfile" >> "$KNOWN_HOSTS"
+ rm -f "$tmpfile" "${tmpfile}.old"
+ else
+ ssh2known_hosts "$host" "$sshKey" >> "$KNOWN_HOSTS"
+ fi
+
+ # log if this is a new key to the known_hosts file
+ if [ "$noKey" ] ; then
+ log info "* new key for $host added to known_hosts file."
+ fi
+ fi
+ done
+
+ # if at least one key was found...
+ if [ "$nKeys" -gt 0 ] ; then
+ # if ok keys were found, return 0
+ if [ "$nKeysOK" -gt 0 ] ; then
+ return 0
+ # else return 2
+ else
+ return 2
+ fi
+ # if no keys were found, return 1
+ else
+ return 1
+ fi
+}
+
+# update the known_hosts file for a set of hosts listed on command
+# line
+update_known_hosts() {
+ local nHosts
+ local nHostsOK
+ local nHostsBAD
+ local fileCheck
+ local host
+
+ # the number of hosts specified on command line
+ nHosts="$#"
+
+ nHostsOK=0
+ nHostsBAD=0
+
+ # create a lockfile on known_hosts:
+ lock create "$KNOWN_HOSTS"
+ # FIXME: we're discarding any pre-existing EXIT trap; is this bad?
+ trap "lock remove $KNOWN_HOSTS" EXIT
+
+ # note pre update file checksum
+ fileCheck="$(file_hash "$KNOWN_HOSTS")"
+
+ for host ; do
+ # process the host
+ process_host_known_hosts "$host"
+ # note the result
+ case "$?" in
+ 0)
+ nHostsOK=$((nHostsOK+1))
+ ;;
+ 2)
+ nHostsBAD=$((nHostsBAD+1))
+ ;;
+ esac
+
+ # touch the lockfile, for good measure.
+ lock touch "$KNOWN_HOSTS"
+ done
+
+ # remove the lockfile and the trap
+ lock remove "$KNOWN_HOSTS"
+ trap - EXIT
+
+ # note if the known_hosts file was updated
+ if [ "$(file_hash "$KNOWN_HOSTS")" != "$fileCheck" ] ; then
+ log debug "known_hosts file updated."
+ fi
+
+ # if an acceptable host was found, return 0
+ if [ "$nHostsOK" -gt 0 ] ; then
+ return 0
+ # else if no ok hosts were found...
+ else
+ # if no bad host were found then no hosts were found at all,
+ # and return 1
+ if [ "$nHostsBAD" -eq 0 ] ; then
+ return 1
+ # else if at least one bad host was found, return 2
+ else
+ return 2
+ fi
+ fi
+}
+
+# process hosts from a known_hosts file
+process_known_hosts() {
+ local hosts
+
+ log debug "processing known_hosts file..."
+
+ hosts=$(meat "$KNOWN_HOSTS" | cut -d ' ' -f 1 | grep -v '^|.*$' | tr , ' ' | tr '\n' ' ')
+
+ if [ -z "$hosts" ] ; then
+ log debug "no hosts to process."
+ return
+ fi
+
+ # take all the hosts from the known_hosts file (first
+ # field), grep out all the hashed hosts (lines starting
+ # with '|')...
+ update_known_hosts $hosts
+}
+
+# process uids for the authorized_keys file
+process_uid_authorized_keys() {
+ local userID
+ local nKeys
+ local nKeysOK
+ local ok
+ local sshKey
+
+ userID="$1"
+
+ log verbose "processing: $userID"
+
+ nKeys=0
+ nKeysOK=0
+
+ IFS=$'\n'
+ for line in $(process_user_id "$userID") ; do
+ # note that key was found
+ nKeys=$((nKeys+1))
+
+ ok=$(echo "$line" | cut -d: -f1)
+ sshKey=$(echo "$line" | cut -d: -f2)
+
+ if [ -z "$sshKey" ] ; then
+ continue
+ fi
+
+ # remove the old host key line
+ remove_line "$AUTHORIZED_KEYS" "$sshKey"
+
+ # if key OK, add new host line
+ if [ "$ok" -eq '0' ] ; then
+ # note that key was found ok
+ nKeysOK=$((nKeysOK+1))
+
+ ssh2authorized_keys "$userID" "$sshKey" >> "$AUTHORIZED_KEYS"
+ fi
+ done
+
+ # if at least one key was found...
+ if [ "$nKeys" -gt 0 ] ; then
+ # if ok keys were found, return 0
+ if [ "$nKeysOK" -gt 0 ] ; then
+ return 0
+ # else return 2
+ else
+ return 2
+ fi
+ # if no keys were found, return 1
+ else
+ return 1
+ fi
+}
+
+# update the authorized_keys files from a list of user IDs on command
+# line
+update_authorized_keys() {
+ local userID
+ local nIDs
+ local nIDsOK
+ local nIDsBAD
+ local fileCheck
+
+ # the number of ids specified on command line
+ nIDs="$#"
+
+ nIDsOK=0
+ nIDsBAD=0
+
+ # create a lockfile on authorized_keys
+ lock create "$AUTHORIZED_KEYS"
+ # FIXME: we're discarding any pre-existing EXIT trap; is this bad?
+ trap "lock remove $AUTHORIZED_KEYS" EXIT
+
+ # note pre update file checksum
+ fileCheck="$(file_hash "$AUTHORIZED_KEYS")"
+
+ # remove any monkeysphere lines from authorized_keys file
+ remove_monkeysphere_lines "$AUTHORIZED_KEYS"
+
+ for userID ; do
+ # process the user ID, change return code if key not found for
+ # user ID
+ process_uid_authorized_keys "$userID"
+
+ # note the result
+ case "$?" in
+ 0)
+ nIDsOK=$((nIDsOK+1))
+ ;;
+ 2)
+ nIDsBAD=$((nIDsBAD+1))
+ ;;
+ esac
+
+ # touch the lockfile, for good measure.
+ lock touch "$AUTHORIZED_KEYS"
+ done
+
+ # remove the lockfile and the trap
+ lock remove "$AUTHORIZED_KEYS"
+ trap - EXIT
+
+ # note if the authorized_keys file was updated
+ if [ "$(file_hash "$AUTHORIZED_KEYS")" != "$fileCheck" ] ; then
+ log debug "authorized_keys file updated."
+ fi
+
+ # if an acceptable id was found, return 0
+ if [ "$nIDsOK" -gt 0 ] ; then
+ return 0
+ # else if no ok ids were found...
+ else
+ # if no bad ids were found then no ids were found at all, and
+ # return 1
+ if [ "$nIDsBAD" -eq 0 ] ; then
+ return 1
+ # else if at least one bad id was found, return 2
+ else
+ return 2
+ fi
+ fi
+}
+
+# process an authorized_user_ids file for authorized_keys
+process_authorized_user_ids() {
+ local line
+ local nline
+ local userIDs
+
+ authorizedUserIDs="$1"
+
+ log debug "processing authorized_user_ids file..."
+
+ if ! meat "$authorizedUserIDs" > /dev/null ; then
+ log debug " no user IDs to process."
+ return
+ fi
+
+ nline=0
+
+ # extract user IDs from authorized_user_ids file
+ IFS=$'\n'
+ for line in $(meat "$authorizedUserIDs") ; do
+ userIDs["$nline"]="$line"
+ nline=$((nline+1))
+ done
+
+ update_authorized_keys "${userIDs[@]}"
+}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere gen-subkey subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+# 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."
+}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere import-subkey subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+# 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 "$fifoDir"
+ wait
+ log verbose "done."
+}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# monkeysphere-ssh-proxycommand: MonkeySphere ssh ProxyCommand hook
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+# This is meant to be run as an ssh ProxyCommand to initiate a
+# monkeysphere known_hosts update before an ssh connection to host is
+# established. Can be added to ~/.ssh/config as follows:
+# ProxyCommand monkeysphere-ssh-proxycommand %h %p
+
+ssh_proxycommand() {
+
+# "marginal case" ouput in the case that there is not a full
+# validation path to the host
+output_no_valid_key() {
+ local sshKeyOffered
+ local userID
+ local type
+ local validity
+ local keyid
+ local uidfpr
+ local usage
+ local sshKeyGPG
+ local tmpkey
+ local sshFingerprint
+ local gpgSigOut
+
+ userID="ssh://${HOSTP}"
+
+ log "-------------------- Monkeysphere warning -------------------"
+ log "Monkeysphere found OpenPGP keys for this hostname, but none had full validity."
+
+ # retrieve the actual ssh key
+ sshKeyOffered=$(ssh-keyscan -t rsa -p "$PORT" "$HOST" 2>/dev/null | awk '{ print $2, $3 }')
+ # FIXME: should we do any checks for failed keyscans, eg. host not
+ # found?
+
+ # get the gpg info for userid
+ gpgOut=$(gpg --list-key --fixed-list-mode --with-colon \
+ --with-fingerprint --with-fingerprint \
+ ="$userID" 2>/dev/null)
+
+ # find all 'pub' and 'sub' lines in the gpg output, which each
+ # represent a retrieved key for the user ID
+ echo "$gpgOut" | cut -d: -f1,2,5,10,12 | \
+ while IFS=: read -r type validity keyid uidfpr usage ; do
+ case $type in
+ 'pub'|'sub')
+ # get the ssh key of the gpg key
+ sshKeyGPG=$(gpg2ssh "$keyid")
+
+ # if one of keys found matches the one offered by the
+ # host, then output info
+ if [ "$sshKeyGPG" = "$sshKeyOffered" ] ; then
+ log "An OpenPGP key matching the ssh key offered by the host was found:"
+ log
+
+ # do some crazy "Here Strings" redirection to get the key to
+ # ssh-keygen, since it doesn't read from stdin cleanly
+ sshFingerprint=$(ssh-keygen -l -f /dev/stdin \
+ <<<$(echo "$sshKeyGPG") | \
+ awk '{ print $2 }')
+
+ # get the sigs for the matching key
+ gpgSigOut=$(gpg --check-sigs \
+ --list-options show-uid-validity \
+ "$keyid")
+
+ # output the sigs, but only those on the user ID
+ # we are looking for
+ echo "$gpgSigOut" | awk '
+{
+if (match($0,"^pub")) { print; }
+if (match($0,"^uid")) { ok=0; }
+if (match($0,"^uid.*'$userID'$")) { ok=1; print; }
+if (ok) { if (match($0,"^sig")) { print; } }
+}
+' >&2
+ log
+
+ # output the other user IDs for reference
+ if (echo "$gpgSigOut" | grep "^uid" | grep -v -q "$userID") ; then
+ log "Other user IDs on this key:"
+ echo "$gpgSigOut" | grep "^uid" | grep -v "$userID" >&2
+ log
+ fi
+
+ # output ssh fingerprint
+ log "RSA key fingerprint is ${sshFingerprint}."
+
+ # this whole process is in a "while read"
+ # subshell. the only way to get information out
+ # of the subshell is to change the return code.
+ # therefore we return 1 here to indicate that a
+ # matching gpg key was found for the ssh key
+ # offered by the host
+ return 1
+ fi
+ ;;
+ esac
+ done
+
+ # if no key match was made (and the "while read" subshell returned
+ # 1) output how many keys were found
+ if (($? != 1)) ; then
+ log "None of the found keys matched the key offered by the host."
+ log "Run the following command for more info about the found keys:"
+ log "gpg --check-sigs --list-options show-uid-validity =${userID}"
+ # FIXME: should we do anything extra here if the retrieved
+ # host key is actually in the known_hosts file and the ssh
+ # connection will succeed? Should the user be warned?
+ # prompted?
+ fi
+
+ log "-------------------- ssh continues below --------------------"
+}
+
+########################################################################
+
+# export the monkeysphere log level
+export MONKEYSPHERE_LOG_LEVEL
+
+if [ "$1" = '--no-connect' ] ; then
+ NO_CONNECT='true'
+ shift 1
+fi
+
+HOST="$1"
+PORT="$2"
+
+if [ -z "$HOST" ] ; then
+ log "Host not specified."
+ usage
+ exit 255
+fi
+if [ -z "$PORT" ] ; then
+ PORT=22
+fi
+
+# set the host URI
+if [ "$PORT" != '22' ] ; then
+ HOSTP="${HOST}:${PORT}"
+else
+ HOSTP="${HOST}"
+fi
+URI="ssh://${HOSTP}"
+
+# specify keyserver checking. the behavior of this proxy command is
+# intentionally different than that of running monkeyesphere normally,
+# and keyserver checking is intentionally done under certain
+# circumstances. This can be overridden by setting the
+# MONKEYSPHERE_CHECK_KEYSERVER environment variable.
+
+# if the host is in the gpg keyring...
+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 "$HOST" 2>/dev/null)
+
+ if [ "$hostKey" ] ; then
+ # 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
+# set and export the variable for use by monkeysphere
+MONKEYSPHERE_CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:="$CHECK_KEYSERVER"}
+export MONKEYSPHERE_CHECK_KEYSERVER
+
+# update the known_hosts file for the host
+monkeysphere update-known_hosts "$HOSTP"
+
+# output on depending on the return of the update-known_hosts
+# subcommand, which is (ultimately) the return code of the
+# update_known_hosts function in common
+case $? in
+ 0)
+ # acceptable host key found so continue to ssh
+ true
+ ;;
+ 1)
+ # no hosts at all found so also continue (drop through to
+ # regular ssh host verification)
+ true
+ ;;
+ 2)
+ # at least one *bad* host key (and no good host keys) was
+ # found, so output some usefull information
+ output_no_valid_key
+ ;;
+ *)
+ # anything else drop through
+ true
+ ;;
+esac
+
+# FIXME: what about the case where monkeysphere successfully finds a
+# valid key for the host and adds it to the known_hosts file, but a
+# different non-monkeysphere key for the host already exists in the
+# known_hosts, and it is this non-ms key that is offered by the host?
+# monkeysphere will succeed, and the ssh connection will succeed, and
+# the user will be left with the impression that they are dealing with
+# a OpenPGP/PKI host key when in fact they are not. should we use
+# ssh-keyscan to compare the keys first?
+
+# exec a netcat passthrough to host for the ssh connection
+if [ -z "$NO_CONNECT" ] ; then
+ 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
+
+}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere subkey-to-ssh-agent subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+# try to add all authentication subkeys to the agent
+
+subkey_to_ssh_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 [ "$sshaddresponse" = "2" ]; then
+ failure "Could not connect to ssh-agent"
+ fi
+
+ # get list of secret keys (to work around bug
+ # https://bugs.g10code.com/gnupg/issue945):
+ secretkeys=$(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"
+}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere authentication add-certifier subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+# retrieve key from web of trust, import it into the host keyring, and
+# ltsign the key in the host keyring so that it may certify other keys
+
+add_certifier() {
+
+local domain
+local trust
+local depth
+local keyID
+local fingerprint
+local ltsignCommand
+local trustval
+
+# set default values for trust depth and domain
+domain=
+trust=full
+depth=1
+
+# get options
+while true ; do
+ case "$1" in
+ -n|--domain)
+ domain="$2"
+ shift 2
+ ;;
+ -t|--trust)
+ trust="$2"
+ shift 2
+ ;;
+ -d|--depth)
+ depth="$2"
+ shift 2
+ ;;
+ *)
+ if [ "$(echo "$1" | cut -c 1)" = '-' ] ; then
+ failure "Unknown option '$1'.
+Type '$PGRM help' for usage."
+ fi
+ break
+ ;;
+ esac
+done
+
+keyID="$1"
+if [ -z "$keyID" ] ; then
+ failure "You must specify the key ID of a key to add, or specify a file to read the key from."
+fi
+if [ -f "$keyID" ] ; then
+ echo "Reading key from file '$keyID':"
+ importinfo=$(gpg_sphere "--import" < "$keyID" 2>&1) || failure "could not read key from '$keyID'"
+ # FIXME: if this is tried when the key database is not
+ # up-to-date, i got these errors (using set -x):
+
+ # ++ su -m monkeysphere -c '\''gpg --import'\''
+ # Warning: using insecure memory!
+ # gpg: key D21739E9: public key "Daniel Kahn Gillmor <dkg@fifthhorseman.net>" imported
+ # gpg: Total number processed: 1
+ # gpg: imported: 1 (RSA: 1)
+ # gpg: can'\''t create `/var/monkeysphere/gnupg-host/pubring.gpg.tmp'\'': Permission denied
+ # gpg: failed to rebuild keyring cache: Permission denied
+ # gpg: 3 marginal(s) needed, 1 complete(s) needed, PGP trust model
+ # gpg: depth: 0 valid: 1 signed: 0 trust: 0-, 0q, 0n, 0m, 0f, 1u
+ # gpg: next trustdb check due at 2009-01-10'
+ # + failure 'could not read key from '\''/root/dkg.gpg'\'''
+ # + echo 'could not read key from '\''/root/dkg.gpg'\'''
+
+ keyID=$(echo "$importinfo" | grep '^gpg: key ' | cut -f2 -d: | cut -f3 -d\ )
+ if [ -z "$keyID" ] || [ $(echo "$keyID" | wc -l) -ne 1 ] ; then
+ failure "Expected there to be a single gpg key in the file."
+ fi
+else
+ # get the key from the key server
+ gpg_sphere "--keyserver $KEYSERVER --recv-key '0x${keyID}!'" || failure "Could not receive a key with this ID from the '$KEYSERVER' keyserver."
+fi
+
+export keyID
+
+# get the full fingerprint of a key ID
+fingerprint=$(gpg_sphere "--list-key --with-colons --with-fingerprint 0x${keyID}!" | \
+ grep '^fpr:' | grep "$keyID" | cut -d: -f10)
+
+if [ -z "$fingerprint" ] ; then
+ failure "Key '$keyID' not found."
+fi
+
+echo
+echo "key found:"
+gpg_sphere "--fingerprint 0x${fingerprint}!"
+
+echo "Are you sure you want to add the above key as a"
+read -p "certifier of users on this system? (y/N) " OK; OK=${OK:-N}
+if [ "${OK/y/Y}" != 'Y' ] ; then
+ failure "Identity certifier not added."
+fi
+
+# export the key to the host keyring
+gpg_sphere "--export 0x${fingerprint}!" | gpg_core --import
+
+if [ "$trust" = marginal ]; then
+ trustval=1
+elif [ "$trust" = full ]; then
+ trustval=2
+else
+ failure "Trust value requested ('$trust') was unclear (only 'marginal' or 'full' are supported)."
+fi
+
+# ltsign command
+# NOTE: *all* user IDs will be ltsigned
+ltsignCommand=$(cat <<EOF
+ltsign
+y
+$trustval
+$depth
+$domain
+y
+save
+EOF
+ )
+
+# ltsign the key
+if echo "$ltsignCommand" | \
+ gpg_core --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
+
+ # update the trustdb for the authentication keyring
+ gpg_sphere "--check-trustdb"
+
+ echo
+ echo "Identity certifier added."
+else
+ failure "Problem adding identify certifier."
+fi
+
+}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere authentication diagnostics subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+# check on the status and validity of the key and public certificates
+
+diagnostics() {
+
+local seckey
+local keysfound
+local curdate
+local warnwindow
+local warndate
+local create
+local expire
+local uid
+local fingerprint
+local badhostkeys
+local sshd_config
+local problemsfound=0
+
+# FIXME: what's the correct, cross-platform answer?
+sshd_config=/etc/ssh/sshd_config
+seckey=$(gpg_host --list-secret-keys --fingerprint --with-colons --fixed-list-mode)
+keysfound=$(echo "$seckey" | grep -c ^sec:)
+curdate=$(date +%s)
+# warn when anything is 2 months away from expiration
+warnwindow='2 months'
+warndate=$(advance_date $warnwindow +%s)
+
+if ! id monkeysphere >/dev/null ; then
+ echo "! No monkeysphere user found! Please create a monkeysphere system user with bash as its shell."
+ problemsfound=$(($problemsfound+1))
+fi
+
+if ! [ -d "$SYSDATADIR" ] ; then
+ echo "! no $SYSDATADIR directory found. Please create it."
+ problemsfound=$(($problemsfound+1))
+fi
+
+echo "Checking host GPG key..."
+if (( "$keysfound" < 1 )); then
+ echo "! No host key found."
+ echo " - Recommendation: run 'monkeysphere-server gen-key'"
+ problemsfound=$(($problemsfound+1))
+elif (( "$keysfound" > 1 )); then
+ echo "! More than one host key found?"
+ # FIXME: recommend a way to resolve this
+ problemsfound=$(($problemsfound+1))
+else
+ create=$(echo "$seckey" | grep ^sec: | cut -f6 -d:)
+ expire=$(echo "$seckey" | grep ^sec: | cut -f7 -d:)
+ fingerprint=$(echo "$seckey" | grep ^fpr: | head -n1 | cut -f10 -d:)
+ # check for key expiration:
+ if [ "$expire" ]; then
+ if (( "$expire" < "$curdate" )); then
+ echo "! Host key is expired."
+ echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
+ problemsfound=$(($problemsfound+1))
+ elif (( "$expire" < "$warndate" )); then
+ echo "! Host key expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
+ echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
+ problemsfound=$(($problemsfound+1))
+ fi
+ fi
+
+ # and weirdnesses:
+ if [ "$create" ] && (( "$create" > "$curdate" )); then
+ echo "! Host key was created in the future(?!). Is your clock correct?"
+ echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ # check for UserID expiration:
+ echo "$seckey" | grep ^uid: | cut -d: -f6,7,10 | \
+ while IFS=: read create expire uid ; do
+ # FIXME: should we be doing any checking on the form
+ # of the User ID? Should we be unmangling it somehow?
+
+ if [ "$create" ] && (( "$create" > "$curdate" )); then
+ echo "! User ID '$uid' was created in the future(?!). Is your clock correct?"
+ echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
+ problemsfound=$(($problemsfound+1))
+ fi
+ if [ "$expire" ] ; then
+ if (( "$expire" < "$curdate" )); then
+ echo "! User ID '$uid' is expired."
+ # FIXME: recommend a way to resolve this
+ problemsfound=$(($problemsfound+1))
+ elif (( "$expire" < "$warndate" )); then
+ echo "! User ID '$uid' expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
+ # FIXME: recommend a way to resolve this
+ problemsfound=$(($problemsfound+1))
+ fi
+ fi
+ done
+
+# FIXME: verify that the host key is properly published to the
+# keyservers (do this with the non-privileged user)
+
+# FIXME: check that there are valid, non-expired certifying signatures
+# attached to the host key after fetching from the public keyserver
+# (do this with the non-privileged user as well)
+
+# FIXME: propose adding a revoker to the host key if none exist (do we
+# have a way to do that after key generation?)
+
+ # Ensure that the ssh_host_rsa_key file is present and non-empty:
+ echo
+ echo "Checking host SSH key..."
+ if [ ! -s "${SYSDATADIR}/ssh_host_rsa_key" ] ; then
+ echo "! The host key as prepared for SSH (${SYSDATADIR}/ssh_host_rsa_key) is missing or empty."
+ problemsfound=$(($problemsfound+1))
+ else
+ if [ $(ls -l "${SYSDATADIR}/ssh_host_rsa_key" | cut -f1 -d\ ) != '-rw-------' ] ; then
+ echo "! Permissions seem wrong for ${SYSDATADIR}/ssh_host_rsa_key -- should be 0600."
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ # propose changes needed for sshd_config (if any)
+ if ! grep -q "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$" "$sshd_config"; then
+ echo "! $sshd_config does not point to the monkeysphere host key (${SYSDATADIR}/ssh_host_rsa_key)."
+ echo " - Recommendation: add a line to $sshd_config: 'HostKey ${SYSDATADIR}/ssh_host_rsa_key'"
+ problemsfound=$(($problemsfound+1))
+ fi
+ if badhostkeys=$(grep -i '^HostKey' "$sshd_config" | grep -v "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$") ; then
+ echo "! $sshd_config refers to some non-monkeysphere host keys:"
+ echo "$badhostkeys"
+ echo " - Recommendation: remove the above HostKey lines from $sshd_config"
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ # FIXME: test (with ssh-keyscan?) that the running ssh
+ # daemon is actually offering the monkeysphere host key.
+
+ fi
+fi
+
+# FIXME: look at the ownership/privileges of the various keyrings,
+# directories housing them, etc (what should those values be? can
+# we make them as minimal as possible?)
+
+# FIXME: look to see that the ownertrust rules are set properly on the
+# authentication keyring
+
+# FIXME: make sure that at least one identity certifier exists
+
+# FIXME: look at the timestamps on the monkeysphere-generated
+# authorized_keys files -- warn if they seem out-of-date.
+
+# FIXME: check for a cronjob that updates monkeysphere-generated
+# authorized_keys?
+
+echo
+echo "Checking for MonkeySphere-enabled public-key authentication for users ..."
+# Ensure that User ID authentication is enabled:
+if ! grep -q "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$" "$sshd_config"; then
+ echo "! $sshd_config does not point to monkeysphere authorized keys."
+ echo " - Recommendation: add a line to $sshd_config: 'AuthorizedKeysFile ${SYSDATADIR}/authorized_keys/%u'"
+ problemsfound=$(($problemsfound+1))
+fi
+if badauthorizedkeys=$(grep -i '^AuthorizedKeysFile' "$sshd_config" | grep -v "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$") ; then
+ echo "! $sshd_config refers to non-monkeysphere authorized_keys files:"
+ echo "$badauthorizedkeys"
+ echo " - Recommendation: remove the above AuthorizedKeysFile lines from $sshd_config"
+ problemsfound=$(($problemsfound+1))
+fi
+
+if [ "$problemsfound" -gt 0 ]; then
+ echo "When the above $problemsfound issue"$(if [ "$problemsfound" -eq 1 ] ; then echo " is" ; else echo "s are" ; fi)" resolved, please re-run:"
+ echo " monkeysphere-server diagnostics"
+else
+ echo "Everything seems to be in order!"
+fi
+
+}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere authentication list-certifiers subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@fifthhorseman.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+# list the host certifiers
+
+list_certifiers() {
+
+local keys
+local key
+
+# find trusted keys in authentication keychain
+keys=$(gpg_sphere "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-keys --with-colons --fingerprint" | \
+ grep ^pub: | cut -d: -f2,5 | egrep '^(u|f):' | cut -d: -f2)
+
+# output keys
+for key in $keys ; do
+ gpg_sphere "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key --fingerprint $key"
+done
+
+}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere authentication remove-certifier subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+# delete a certifiers key from the host keyring
+
+remove_certifier() {
+
+local keyID
+local fingerprint
+
+keyID="$1"
+if [ -z "$keyID" ] ; then
+ failure "You must specify the key ID of a key to remove."
+fi
+
+if gpg_sphere "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key 0x${keyID}!" ; then
+ read -p "Really remove above listed identity certifier? (y/N) " OK; OK=${OK:-N}
+ if [ "${OK/y/Y}" != 'Y' ] ; then
+ failure "Identity certifier not removed."
+ fi
+else
+ failure
+fi
+
+# delete the requested key
+if gpg_sphere "--delete-key --batch --yes 0x${keyID}!" ; then
+ # delete key from host keyring as well
+ gpg_core --delete-key --batch --yes "0x${keyID}!"
+
+ # update the trustdb for the authentication keyring
+ gpg_sphere "--check-trustdb"
+
+ echo
+ echo "Identity certifier removed."
+else
+ failure "Problem removing identity certifier."
+fi
+
+}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere authentication update-users subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+update_users() {
+
+local unames
+local uname
+local authorizedKeysDir
+local authorizedUserIDs
+
+if [ "$1" ] ; then
+ # get users from command line
+ unames="$@"
+else
+ # or just look at all users if none specified
+ unames=$(getent passwd | cut -d: -f1)
+fi
+
+RETURN=0
+
+# set mode
+MODE="authorized_keys"
+
+# set gnupg home
+GNUPGHOME="$GNUPGHOME_SPHERE"
+
+# the authorized_keys directory
+authorizedKeysDir="${SYSDATADIR}/authentication/authorized_keys"
+
+# check to see if the gpg trust database has been initialized
+if [ ! -s "${GNUPGHOME}/trustdb.gpg" ] ; then
+ failure "GNUPG trust database uninitialized. Please see MONKEYSPHERE-SERVER(8)."
+fi
+
+# make sure the authorized_keys directory exists
+mkdir -p "${authorizedKeysDir}"
+
+# loop over users
+for uname in $unames ; do
+ # check all specified users exist
+ if ! id "$uname" >/dev/null ; then
+ log error "----- unknown user '$uname' -----"
+ continue
+ fi
+
+ log verbose "----- user: $uname -----"
+
+ # make temporary directory
+ TMPLOC=$(mktemp -d ${MATMPDIR}/tmp.XXXXXXXXXX) || failure "Could not create temporary directory!"
+
+ # trap to delete temporary directory on exit
+ trap "rm -rf $TMPLOC" EXIT
+
+ # create temporary authorized_user_ids file
+ TMP_AUTHORIZED_USER_IDS="${TMPLOC}/authorized_user_ids"
+ touch "$TMP_AUTHORIZED_USER_IDS"
+
+ # create temporary authorized_keys file
+ AUTHORIZED_KEYS="${TMPLOC}/authorized_keys"
+ touch "$AUTHORIZED_KEYS"
+
+ # set restrictive permissions on the temporary files
+ # FIXME: is there a better way to do this?
+ chmod 0700 "$TMPLOC"
+ chmod 0600 "$AUTHORIZED_KEYS"
+ chmod 0600 "$TMP_AUTHORIZED_USER_IDS"
+ chown -R "$MONKEYSPHERE_USER" "$TMPLOC"
+
+ # process authorized_user_ids file
+ log debug "checking for authorized_user_ids..."
+ # translating ssh-style path variables
+ authorizedUserIDs=$(translate_ssh_variables "$uname" "$AUTHORIZED_USER_IDS")
+ if [ -s "$authorizedUserIDs" ] ; then
+ # check permissions on the authorized_user_ids file path
+ if check_key_file_permissions "$uname" "$authorizedUserIDs" ; then
+ # copy user authorized_user_ids file to temporary
+ # location
+ cat "$authorizedUserIDs" > "$TMP_AUTHORIZED_USER_IDS"
+
+ # export needed variables
+ export AUTHORIZED_KEYS
+ export TMP_AUTHORIZED_USER_IDS
+
+ # process authorized_user_ids file, as monkeysphere user
+ su_monkeysphere_user \
+ ". ${SYSSHAREDIR}/common; process_authorized_user_ids $TMP_AUTHORIZED_USER_IDS"
+ RETURN="$?"
+ else
+ log debug "not processing authorized_user_ids."
+ fi
+ else
+ log debug "empty or absent authorized_user_ids file."
+ fi
+
+ # add user-controlled authorized_keys file if specified translate
+ # ssh-style path variables
+ rawAuthorizedKeys=$(translate_ssh_variables "$uname" "$RAW_AUTHORIZED_KEYS")
+ if [ "$rawAuthorizedKeys" != 'none' ] ; then
+ log debug "checking for raw authorized_keys..."
+ if [ -s "$rawAuthorizedKeys" ] ; then
+ # check permissions on the authorized_keys file path
+ if check_key_file_permissions "$uname" "$rawAuthorizedKeys" ; then
+ log verbose "adding raw authorized_keys file... "
+ cat "$rawAuthorizedKeys" >> "$AUTHORIZED_KEYS"
+ else
+ log debug "not adding raw authorized_keys file."
+ fi
+ else
+ log debug "empty or absent authorized_keys file."
+ fi
+ fi
+
+ # move the new authorized_keys file into place
+ if [ -s "$AUTHORIZED_KEYS" ] ; then
+ # openssh appears to check the contents of the authorized_keys
+ # file as the user in question, so the file must be readable
+ # by that user at least.
+
+ # but in general, we don't want the user tampering with this
+ # file directly, so we'll adopt this approach: Own the file by
+ # the monkeysphere-server invoker (usually root, but should be
+ # the same uid that sshd is launched as); change the group of
+ # the file so that members of the user's group can read it.
+
+ # FIXME: is there a better way to do this?
+ chown $(whoami) "$AUTHORIZED_KEYS" && \
+ chgrp $(id -g "$uname") "$AUTHORIZED_KEYS" && \
+ chmod g+r "$AUTHORIZED_KEYS" && \
+ mv -f "$AUTHORIZED_KEYS" "${authorizedKeysDir}/${uname}" || \
+ {
+ log error "Failed to install authorized_keys for '$uname'!"
+ rm -f "${authorizedKeysDir}/${uname}"
+ # indicate that there has been a failure:
+ RETURN=1
+ }
+ else
+ rm -f "${authorizedKeysDir}/${uname}"
+ fi
+
+ # unset the trap
+ trap - EXIT
+
+ # destroy temporary directory
+ rm -rf "$TMPLOC"
+done
+
+}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere host add-hostname subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+# add hostname user ID to server key
+
+add_hostname() {
+
+local userID
+local fingerprint
+local tmpuidMatch
+local line
+local adduidCommand
+
+if [ -z "$1" ] ; then
+ failure "You must specify a hostname to add."
+fi
+
+userID="ssh://${1}"
+
+fingerprint=$(fingerprint_server_key)
+
+# match to only ultimately trusted user IDs
+tmpuidMatch="u:$(echo $userID | gpg_escape)"
+
+# find the index of the requsted user ID
+# NOTE: this is based on circumstantial evidence that the order of
+# this output is the appropriate index
+if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
+ | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
+ failure "Host userID '$userID' already exists."
+fi
+
+echo "The following user ID will be added to the host key:"
+echo " $userID"
+read -p "Are you sure you would like to add this user ID? (y/N) " OK; OK=${OK:=N}
+if [ ${OK/y/Y} != 'Y' ] ; then
+ failure "User ID not added."
+fi
+
+# edit-key script command to add user ID
+adduidCommand=$(cat <<EOF
+adduid
+$userID
+
+
+save
+EOF
+)
+
+# execute edit-key script
+if echo "$adduidCommand" | \
+ gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
+
+ show_key
+
+ echo
+ echo "NOTE: User ID added to key, but key not published."
+ echo "Run '$PGRM publish-key' to publish the new user ID."
+else
+ failure "Problem adding user ID."
+fi
+
+}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere host add-revoker subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008, and are all released under the GPL, version 3
+# or later.
+
+# add a revoker to the host key
+
+add_revoker() {
+
+# FIXME: implement!
+failure "not implemented yet!"
+
+}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere host diagnostics subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+# check on the status and validity of the key and public certificates
+
+diagnostics() {
+
+local seckey
+local keysfound
+local curdate
+local warnwindow
+local warndate
+local create
+local expire
+local uid
+local fingerprint
+local badhostkeys
+local sshd_config
+local problemsfound=0
+
+# FIXME: what's the correct, cross-platform answer?
+sshd_config=/etc/ssh/sshd_config
+seckey=$(gpg_host --list-secret-keys --fingerprint --with-colons --fixed-list-mode)
+keysfound=$(echo "$seckey" | grep -c ^sec:)
+curdate=$(date +%s)
+# warn when anything is 2 months away from expiration
+warnwindow='2 months'
+warndate=$(advance_date $warnwindow +%s)
+
+if ! id monkeysphere >/dev/null ; then
+ echo "! No monkeysphere user found! Please create a monkeysphere system user with bash as its shell."
+ problemsfound=$(($problemsfound+1))
+fi
+
+if ! [ -d "$SYSDATADIR" ] ; then
+ echo "! no $SYSDATADIR directory found. Please create it."
+ problemsfound=$(($problemsfound+1))
+fi
+
+echo "Checking host GPG key..."
+if (( "$keysfound" < 1 )); then
+ echo "! No host key found."
+ echo " - Recommendation: run 'monkeysphere-server gen-key'"
+ problemsfound=$(($problemsfound+1))
+elif (( "$keysfound" > 1 )); then
+ echo "! More than one host key found?"
+ # FIXME: recommend a way to resolve this
+ problemsfound=$(($problemsfound+1))
+else
+ create=$(echo "$seckey" | grep ^sec: | cut -f6 -d:)
+ expire=$(echo "$seckey" | grep ^sec: | cut -f7 -d:)
+ fingerprint=$(echo "$seckey" | grep ^fpr: | head -n1 | cut -f10 -d:)
+ # check for key expiration:
+ if [ "$expire" ]; then
+ if (( "$expire" < "$curdate" )); then
+ echo "! Host key is expired."
+ echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
+ problemsfound=$(($problemsfound+1))
+ elif (( "$expire" < "$warndate" )); then
+ echo "! Host key expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
+ echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
+ problemsfound=$(($problemsfound+1))
+ fi
+ fi
+
+ # and weirdnesses:
+ if [ "$create" ] && (( "$create" > "$curdate" )); then
+ echo "! Host key was created in the future(?!). Is your clock correct?"
+ echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ # check for UserID expiration:
+ echo "$seckey" | grep ^uid: | cut -d: -f6,7,10 | \
+ while IFS=: read create expire uid ; do
+ # FIXME: should we be doing any checking on the form
+ # of the User ID? Should we be unmangling it somehow?
+
+ if [ "$create" ] && (( "$create" > "$curdate" )); then
+ echo "! User ID '$uid' was created in the future(?!). Is your clock correct?"
+ echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
+ problemsfound=$(($problemsfound+1))
+ fi
+ if [ "$expire" ] ; then
+ if (( "$expire" < "$curdate" )); then
+ echo "! User ID '$uid' is expired."
+ # FIXME: recommend a way to resolve this
+ problemsfound=$(($problemsfound+1))
+ elif (( "$expire" < "$warndate" )); then
+ echo "! User ID '$uid' expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
+ # FIXME: recommend a way to resolve this
+ problemsfound=$(($problemsfound+1))
+ fi
+ fi
+ done
+
+# FIXME: verify that the host key is properly published to the
+# keyservers (do this with the non-privileged user)
+
+# FIXME: check that there are valid, non-expired certifying signatures
+# attached to the host key after fetching from the public keyserver
+# (do this with the non-privileged user as well)
+
+# FIXME: propose adding a revoker to the host key if none exist (do we
+# have a way to do that after key generation?)
+
+ # Ensure that the ssh_host_rsa_key file is present and non-empty:
+ echo
+ echo "Checking host SSH key..."
+ if [ ! -s "${SYSDATADIR}/ssh_host_rsa_key" ] ; then
+ echo "! The host key as prepared for SSH (${SYSDATADIR}/ssh_host_rsa_key) is missing or empty."
+ problemsfound=$(($problemsfound+1))
+ else
+ if [ $(ls -l "${SYSDATADIR}/ssh_host_rsa_key" | cut -f1 -d\ ) != '-rw-------' ] ; then
+ echo "! Permissions seem wrong for ${SYSDATADIR}/ssh_host_rsa_key -- should be 0600."
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ # propose changes needed for sshd_config (if any)
+ if ! grep -q "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$" "$sshd_config"; then
+ echo "! $sshd_config does not point to the monkeysphere host key (${SYSDATADIR}/ssh_host_rsa_key)."
+ echo " - Recommendation: add a line to $sshd_config: 'HostKey ${SYSDATADIR}/ssh_host_rsa_key'"
+ problemsfound=$(($problemsfound+1))
+ fi
+ if badhostkeys=$(grep -i '^HostKey' "$sshd_config" | grep -v "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$") ; then
+ echo "! $sshd_config refers to some non-monkeysphere host keys:"
+ echo "$badhostkeys"
+ echo " - Recommendation: remove the above HostKey lines from $sshd_config"
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ # FIXME: test (with ssh-keyscan?) that the running ssh
+ # daemon is actually offering the monkeysphere host key.
+
+ fi
+fi
+
+# FIXME: look at the ownership/privileges of the various keyrings,
+# directories housing them, etc (what should those values be? can
+# we make them as minimal as possible?)
+
+# FIXME: look to see that the ownertrust rules are set properly on the
+# authentication keyring
+
+# FIXME: make sure that at least one identity certifier exists
+
+# FIXME: look at the timestamps on the monkeysphere-generated
+# authorized_keys files -- warn if they seem out-of-date.
+
+# FIXME: check for a cronjob that updates monkeysphere-generated
+# authorized_keys?
+
+echo
+echo "Checking for MonkeySphere-enabled public-key authentication for users ..."
+# Ensure that User ID authentication is enabled:
+if ! grep -q "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$" "$sshd_config"; then
+ echo "! $sshd_config does not point to monkeysphere authorized keys."
+ echo " - Recommendation: add a line to $sshd_config: 'AuthorizedKeysFile ${SYSDATADIR}/authorized_keys/%u'"
+ problemsfound=$(($problemsfound+1))
+fi
+if badauthorizedkeys=$(grep -i '^AuthorizedKeysFile' "$sshd_config" | grep -v "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$") ; then
+ echo "! $sshd_config refers to non-monkeysphere authorized_keys files:"
+ echo "$badauthorizedkeys"
+ echo " - Recommendation: remove the above AuthorizedKeysFile lines from $sshd_config"
+ problemsfound=$(($problemsfound+1))
+fi
+
+if [ "$problemsfound" -gt 0 ]; then
+ echo "When the above $problemsfound issue"$(if [ "$problemsfound" -eq 1 ] ; then echo " is" ; else echo "s are" ; fi)" resolved, please re-run:"
+ echo " monkeysphere-server diagnostics"
+else
+ echo "Everything seems to be in order!"
+fi
+
+}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere host extend-key subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+# extend the lifetime of a host key:
+
+extend_key() {
+
+local fpr=$(fingerprint_server_key)
+local extendTo="$1"
+
+# get the new expiration date
+extendTo=$(get_gpg_expiration "$extendTo")
+
+gpg_host --quiet --command-fd 0 --edit-key "$fpr" <<EOF
+expire
+$extendTo
+save
+EOF
+
+echo
+echo "NOTE: Host key expiration date adjusted, but not yet published."
+echo "Run '$PGRM publish-key' to publish the new expiration date."
+
+}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere host gen-key subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+gen_key() {
+
+local keyType="RSA"
+local keyLength="2048"
+local keyUsage="auth"
+local keyExpire
+local hostName=$(hostname -f)
+local userID
+local keyParameters
+local fingerprint
+
+# check for presense of secret key
+# FIXME: is this the proper test to be doing here?
+fingerprint_server_key >/dev/null \
+ && failure "An OpenPGP host key already exists."
+
+# 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
+ hostName="$1"
+ shift;
+ break
+ ;;
+ esac
+done
+
+userID="ssh://${hostName}"
+
+# prompt about key expiration if not specified
+keyExpire=$(get_gpg_expiration "$keyExpire")
+
+# set key parameters
+keyParameters=\
+"Key-Type: $keyType
+Key-Length: $keyLength
+Key-Usage: $keyUsage
+Name-Real: $userID
+Expire-Date: $keyExpire"
+
+echo "The following key parameters will be used for the host private key:"
+echo "$keyParameters"
+
+read -p "Generate key? (Y/n) " OK; OK=${OK:=Y}
+if [ ${OK/y/Y} != 'Y' ] ; then
+ failure "aborting."
+fi
+
+# add commit command
+# must include blank line!
+keyParameters=\
+"${keyParameters}
+
+%commit
+%echo done"
+
+log verbose "generating host key..."
+echo "$keyParameters" | gpg_host --batch --gen-key
+
+# find the key fingerprint of the newly generated key
+fingerprint=$(fingerprint_server_key)
+
+# export host ownertrust to authentication keyring
+log verbose "setting ultimate owner trust for host key..."
+echo "${fingerprint}:6:" | gpg_authentication "--import-ownertrust"
+
+# translate the private key to ssh format, and export to a file
+# for sshs usage.
+# NOTE: assumes that the primary key is the proper key to use
+(umask 077 && \
+ gpg_host --export-secret-key "$fingerprint" | \
+ openpgp2ssh "$fingerprint" > "${SYSDATADIR}/ssh_host_rsa_key")
+log info "SSH host private key output to file: ${SYSDATADIR}/ssh_host_rsa_key"
+ssh-keygen -y -f "${SYSDATADIR}/ssh_host_rsa_key" > "${SYSDATADIR}/ssh_host_rsa_key.pub"
+log info "SSH host public key output to file: ${SYSDATADIR}/ssh_host_rsa_key.pub"
+gpg_authentication "--export-options export-minimal --armor --export 0x${fingerprint}\!" > "${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
+log info "SSH host public key in OpenPGP form: ${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
+
+# show info about new key
+show_key
+
+}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere host import-key subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009 and are all released under the GPL,
+# version 3 or later.
+
+import_key() {
+
+local hostName=$(hostname -f)
+local keyFile="/etc/ssh/ssh_host_rsa_key"
+local keyExpire
+local userID
+
+# check for presense of secret key
+# FIXME: is this the proper test to be doing here?
+fingerprint_server_key >/dev/null \
+ && failure "An OpenPGP host key already exists."
+
+# 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
+ hostName="$1"
+ shift
+ ;;
+ break
+ ;;
+ esac
+done
+
+if [ ! -f "$keyFile" ] ; then
+ failure "SSH secret key file '$keyFile' not found."
+fi
+
+userID="ssh://${hostName}"
+
+# prompt about key expiration if not specified
+keyExpire=$(get_gpg_expiration "$keyExpire")
+
+echo "The following key parameters will be used for the host private key:"
+echo "Import: $keyFile"
+echo "Name-Real: $userID"
+echo "Expire-Date: $keyExpire"
+
+read -p "Import key? (Y/n) " OK; OK=${OK:=Y}
+if [ ${OK/y/Y} != 'Y' ] ; then
+ failure "aborting."
+fi
+
+log verbose "importing ssh key..."
+# translate ssh key to a private key
+(umask 077 && \
+ pem2openpgp "$userID" "$keyExpire" < "$sshKey" | gpg_host --import)
+
+# find the key fingerprint of the newly converted key
+fingerprint=$(fingerprint_server_key)
+
+# export host ownertrust to authentication keyring
+log verbose "setting ultimate owner trust for host key..."
+echo "${fingerprint}:6:" | gpg_host "--import-ownertrust"
+echo "${fingerprint}:6:" | gpg_authentication "--import-ownertrust"
+
+# export public key to file
+gpg_authentication "--export-options export-minimal --armor --export 0x${fingerprint}\!" > "${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
+log info "SSH host public key in OpenPGP form: ${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
+
+# show info about new key
+show_key
+
+}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere host publish-key subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL, version 3
+# or later.
+
+# publish server key to keyserver
+
+publish_key() {
+
+read -p "Really publish host key to $KEYSERVER? (y/N) " OK; OK=${OK:=N}
+if [ ${OK/y/Y} != 'Y' ] ; then
+ failure "key not published."
+fi
+
+# find the key fingerprint
+fingerprint=$(fingerprint_server_key)
+
+# publish host key
+# FIXME: need to define how to do this
+#gpg_authentication "--keyserver $KEYSERVER --send-keys '0x${fingerprint}!'"
+echo "not published!!!"
+
+}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere host revoke-hostname subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+# revoke hostname user ID from host key
+
+revoke_hostname() {
+
+local userID
+local fingerprint
+local tmpuidMatch
+local line
+local uidIndex
+local message
+local revuidCommand
+
+if [ -z "$1" ] ; then
+ failure "You must specify a hostname to revoke."
+fi
+
+echo "WARNING: There is a known bug in this function."
+echo "This function has been known to occasionally revoke the wrong user ID."
+echo "Please see the following bug report for more information:"
+echo "http://web.monkeysphere.info/bugs/revoke-hostname-revoking-wrong-userid/"
+read -p "Are you sure you would like to proceed? (y/N) " OK; OK=${OK:=N}
+if [ ${OK/y/Y} != 'Y' ] ; then
+ failure "aborting."
+fi
+
+userID="ssh://${1}"
+
+fingerprint=$(fingerprint_server_key)
+
+# match to only ultimately trusted user IDs
+tmpuidMatch="u:$(echo $userID | gpg_escape)"
+
+# find the index of the requsted user ID
+# NOTE: this is based on circumstantial evidence that the order of
+# this output is the appropriate index
+if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
+ | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
+ uidIndex=${line%%:*}
+else
+ failure "No non-revoked user ID '$userID' is found."
+fi
+
+echo "The following host key user ID will be revoked:"
+echo " $userID"
+read -p "Are you sure you would like to revoke this user ID? (y/N) " OK; OK=${OK:=N}
+if [ ${OK/y/Y} != 'Y' ] ; then
+ failure "User ID not revoked."
+fi
+
+message="Hostname removed by monkeysphere-server $DATE"
+
+# edit-key script command to revoke user ID
+revuidCommand=$(cat <<EOF
+$uidIndex
+revuid
+y
+4
+$message
+
+y
+save
+EOF
+ )
+
+# execute edit-key script
+if echo "$revuidCommand" | \
+ gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
+
+ show_key
+
+ echo
+ echo "NOTE: User ID revoked, but revocation not published."
+ echo "Run '$PGRM publish-key' to publish the revocation."
+else
+ failure "Problem revoking user ID."
+fi
+
+}
--- /dev/null
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere host revoke-key subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+# revoke host key
+
+revoke_key() {
+
+# FIXME: implement!
+failure "not implemented yet!"
+
+}
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# Monkeysphere gen-subkey subcommand
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@finestructure.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008-2009, and are all released under the GPL,
-# version 3 or later.
-
-# 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."
-}
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# Monkeysphere import-subkey subcommand
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@finestructure.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008-2009, and are all released under the GPL,
-# version 3 or later.
-
-# 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 "$fifoDir"
- wait
- log verbose "done."
-}
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# monkeysphere-ssh-proxycommand: MonkeySphere ssh ProxyCommand hook
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@finestructure.net>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008-2009, and are all released under the GPL,
-# version 3 or later.
-
-# This is meant to be run as an ssh ProxyCommand to initiate a
-# monkeysphere known_hosts update before an ssh connection to host is
-# established. Can be added to ~/.ssh/config as follows:
-# ProxyCommand monkeysphere-ssh-proxycommand %h %p
-
-ssh_proxycommand() {
-
-# "marginal case" ouput in the case that there is not a full
-# validation path to the host
-output_no_valid_key() {
- local sshKeyOffered
- local userID
- local type
- local validity
- local keyid
- local uidfpr
- local usage
- local sshKeyGPG
- local tmpkey
- local sshFingerprint
- local gpgSigOut
-
- userID="ssh://${HOSTP}"
-
- log "-------------------- Monkeysphere warning -------------------"
- log "Monkeysphere found OpenPGP keys for this hostname, but none had full validity."
-
- # retrieve the actual ssh key
- sshKeyOffered=$(ssh-keyscan -t rsa -p "$PORT" "$HOST" 2>/dev/null | awk '{ print $2, $3 }')
- # FIXME: should we do any checks for failed keyscans, eg. host not
- # found?
-
- # get the gpg info for userid
- gpgOut=$(gpg --list-key --fixed-list-mode --with-colon \
- --with-fingerprint --with-fingerprint \
- ="$userID" 2>/dev/null)
-
- # find all 'pub' and 'sub' lines in the gpg output, which each
- # represent a retrieved key for the user ID
- echo "$gpgOut" | cut -d: -f1,2,5,10,12 | \
- while IFS=: read -r type validity keyid uidfpr usage ; do
- case $type in
- 'pub'|'sub')
- # get the ssh key of the gpg key
- sshKeyGPG=$(gpg2ssh "$keyid")
-
- # if one of keys found matches the one offered by the
- # host, then output info
- if [ "$sshKeyGPG" = "$sshKeyOffered" ] ; then
- log "An OpenPGP key matching the ssh key offered by the host was found:"
- log
-
- # do some crazy "Here Strings" redirection to get the key to
- # ssh-keygen, since it doesn't read from stdin cleanly
- sshFingerprint=$(ssh-keygen -l -f /dev/stdin \
- <<<$(echo "$sshKeyGPG") | \
- awk '{ print $2 }')
-
- # get the sigs for the matching key
- gpgSigOut=$(gpg --check-sigs \
- --list-options show-uid-validity \
- "$keyid")
-
- # output the sigs, but only those on the user ID
- # we are looking for
- echo "$gpgSigOut" | awk '
-{
-if (match($0,"^pub")) { print; }
-if (match($0,"^uid")) { ok=0; }
-if (match($0,"^uid.*'$userID'$")) { ok=1; print; }
-if (ok) { if (match($0,"^sig")) { print; } }
-}
-' >&2
- log
-
- # output the other user IDs for reference
- if (echo "$gpgSigOut" | grep "^uid" | grep -v -q "$userID") ; then
- log "Other user IDs on this key:"
- echo "$gpgSigOut" | grep "^uid" | grep -v "$userID" >&2
- log
- fi
-
- # output ssh fingerprint
- log "RSA key fingerprint is ${sshFingerprint}."
-
- # this whole process is in a "while read"
- # subshell. the only way to get information out
- # of the subshell is to change the return code.
- # therefore we return 1 here to indicate that a
- # matching gpg key was found for the ssh key
- # offered by the host
- return 1
- fi
- ;;
- esac
- done
-
- # if no key match was made (and the "while read" subshell returned
- # 1) output how many keys were found
- if (($? != 1)) ; then
- log "None of the found keys matched the key offered by the host."
- log "Run the following command for more info about the found keys:"
- log "gpg --check-sigs --list-options show-uid-validity =${userID}"
- # FIXME: should we do anything extra here if the retrieved
- # host key is actually in the known_hosts file and the ssh
- # connection will succeed? Should the user be warned?
- # prompted?
- fi
-
- log "-------------------- ssh continues below --------------------"
-}
-
-########################################################################
-
-# export the monkeysphere log level
-export MONKEYSPHERE_LOG_LEVEL
-
-if [ "$1" = '--no-connect' ] ; then
- NO_CONNECT='true'
- shift 1
-fi
-
-HOST="$1"
-PORT="$2"
-
-if [ -z "$HOST" ] ; then
- log "Host not specified."
- usage
- exit 255
-fi
-if [ -z "$PORT" ] ; then
- PORT=22
-fi
-
-# set the host URI
-if [ "$PORT" != '22' ] ; then
- HOSTP="${HOST}:${PORT}"
-else
- HOSTP="${HOST}"
-fi
-URI="ssh://${HOSTP}"
-
-# specify keyserver checking. the behavior of this proxy command is
-# intentionally different than that of running monkeyesphere normally,
-# and keyserver checking is intentionally done under certain
-# circumstances. This can be overridden by setting the
-# MONKEYSPHERE_CHECK_KEYSERVER environment variable.
-
-# if the host is in the gpg keyring...
-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 "$HOST" 2>/dev/null)
-
- if [ "$hostKey" ] ; then
- # 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
-# set and export the variable for use by monkeysphere
-MONKEYSPHERE_CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:="$CHECK_KEYSERVER"}
-export MONKEYSPHERE_CHECK_KEYSERVER
-
-# update the known_hosts file for the host
-monkeysphere update-known_hosts "$HOSTP"
-
-# output on depending on the return of the update-known_hosts
-# subcommand, which is (ultimately) the return code of the
-# update_known_hosts function in common
-case $? in
- 0)
- # acceptable host key found so continue to ssh
- true
- ;;
- 1)
- # no hosts at all found so also continue (drop through to
- # regular ssh host verification)
- true
- ;;
- 2)
- # at least one *bad* host key (and no good host keys) was
- # found, so output some usefull information
- output_no_valid_key
- ;;
- *)
- # anything else drop through
- true
- ;;
-esac
-
-# FIXME: what about the case where monkeysphere successfully finds a
-# valid key for the host and adds it to the known_hosts file, but a
-# different non-monkeysphere key for the host already exists in the
-# known_hosts, and it is this non-ms key that is offered by the host?
-# monkeysphere will succeed, and the ssh connection will succeed, and
-# the user will be left with the impression that they are dealing with
-# a OpenPGP/PKI host key when in fact they are not. should we use
-# ssh-keyscan to compare the keys first?
-
-# exec a netcat passthrough to host for the ssh connection
-if [ -z "$NO_CONNECT" ] ; then
- 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
-
-}
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# Monkeysphere subkey-to-ssh-agent subcommand
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@finestructure.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008-2009, and are all released under the GPL,
-# version 3 or later.
-
-# try to add all authentication subkeys to the agent
-
-subkey_to_ssh_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 [ "$sshaddresponse" = "2" ]; then
- failure "Could not connect to ssh-agent"
- fi
-
- # get list of secret keys (to work around bug
- # https://bugs.g10code.com/gnupg/issue945):
- secretkeys=$(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"
-}
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# Monkeysphere authentication add-certifier subcommand
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@finestructure.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008-2009, and are all released under the GPL,
-# version 3 or later.
-
-# retrieve key from web of trust, import it into the host keyring, and
-# ltsign the key in the host keyring so that it may certify other keys
-
-add_certifier() {
-
-local domain
-local trust
-local depth
-local keyID
-local fingerprint
-local ltsignCommand
-local trustval
-
-# set default values for trust depth and domain
-domain=
-trust=full
-depth=1
-
-# get options
-while true ; do
- case "$1" in
- -n|--domain)
- domain="$2"
- shift 2
- ;;
- -t|--trust)
- trust="$2"
- shift 2
- ;;
- -d|--depth)
- depth="$2"
- shift 2
- ;;
- *)
- if [ "$(echo "$1" | cut -c 1)" = '-' ] ; then
- failure "Unknown option '$1'.
-Type '$PGRM help' for usage."
- fi
- break
- ;;
- esac
-done
-
-keyID="$1"
-if [ -z "$keyID" ] ; then
- failure "You must specify the key ID of a key to add, or specify a file to read the key from."
-fi
-if [ -f "$keyID" ] ; then
- echo "Reading key from file '$keyID':"
- importinfo=$(gpg_sphere "--import" < "$keyID" 2>&1) || failure "could not read key from '$keyID'"
- # FIXME: if this is tried when the key database is not
- # up-to-date, i got these errors (using set -x):
-
- # ++ su -m monkeysphere -c '\''gpg --import'\''
- # Warning: using insecure memory!
- # gpg: key D21739E9: public key "Daniel Kahn Gillmor <dkg@fifthhorseman.net>" imported
- # gpg: Total number processed: 1
- # gpg: imported: 1 (RSA: 1)
- # gpg: can'\''t create `/var/monkeysphere/gnupg-host/pubring.gpg.tmp'\'': Permission denied
- # gpg: failed to rebuild keyring cache: Permission denied
- # gpg: 3 marginal(s) needed, 1 complete(s) needed, PGP trust model
- # gpg: depth: 0 valid: 1 signed: 0 trust: 0-, 0q, 0n, 0m, 0f, 1u
- # gpg: next trustdb check due at 2009-01-10'
- # + failure 'could not read key from '\''/root/dkg.gpg'\'''
- # + echo 'could not read key from '\''/root/dkg.gpg'\'''
-
- keyID=$(echo "$importinfo" | grep '^gpg: key ' | cut -f2 -d: | cut -f3 -d\ )
- if [ -z "$keyID" ] || [ $(echo "$keyID" | wc -l) -ne 1 ] ; then
- failure "Expected there to be a single gpg key in the file."
- fi
-else
- # get the key from the key server
- gpg_sphere "--keyserver $KEYSERVER --recv-key '0x${keyID}!'" || failure "Could not receive a key with this ID from the '$KEYSERVER' keyserver."
-fi
-
-export keyID
-
-# get the full fingerprint of a key ID
-fingerprint=$(gpg_sphere "--list-key --with-colons --with-fingerprint 0x${keyID}!" | \
- grep '^fpr:' | grep "$keyID" | cut -d: -f10)
-
-if [ -z "$fingerprint" ] ; then
- failure "Key '$keyID' not found."
-fi
-
-echo
-echo "key found:"
-gpg_sphere "--fingerprint 0x${fingerprint}!"
-
-echo "Are you sure you want to add the above key as a"
-read -p "certifier of users on this system? (y/N) " OK; OK=${OK:-N}
-if [ "${OK/y/Y}" != 'Y' ] ; then
- failure "Identity certifier not added."
-fi
-
-# export the key to the host keyring
-gpg_sphere "--export 0x${fingerprint}!" | gpg_core --import
-
-if [ "$trust" = marginal ]; then
- trustval=1
-elif [ "$trust" = full ]; then
- trustval=2
-else
- failure "Trust value requested ('$trust') was unclear (only 'marginal' or 'full' are supported)."
-fi
-
-# ltsign command
-# NOTE: *all* user IDs will be ltsigned
-ltsignCommand=$(cat <<EOF
-ltsign
-y
-$trustval
-$depth
-$domain
-y
-save
-EOF
- )
-
-# ltsign the key
-if echo "$ltsignCommand" | \
- gpg_core --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
-
- # update the trustdb for the authentication keyring
- gpg_sphere "--check-trustdb"
-
- echo
- echo "Identity certifier added."
-else
- failure "Problem adding identify certifier."
-fi
-
-}
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# Monkeysphere authentication diagnostics subcommand
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@finestructure.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008-2009, and are all released under the GPL,
-# version 3 or later.
-
-# check on the status and validity of the key and public certificates
-
-diagnostics() {
-
-local seckey
-local keysfound
-local curdate
-local warnwindow
-local warndate
-local create
-local expire
-local uid
-local fingerprint
-local badhostkeys
-local sshd_config
-local problemsfound=0
-
-# FIXME: what's the correct, cross-platform answer?
-sshd_config=/etc/ssh/sshd_config
-seckey=$(gpg_host --list-secret-keys --fingerprint --with-colons --fixed-list-mode)
-keysfound=$(echo "$seckey" | grep -c ^sec:)
-curdate=$(date +%s)
-# warn when anything is 2 months away from expiration
-warnwindow='2 months'
-warndate=$(advance_date $warnwindow +%s)
-
-if ! id monkeysphere >/dev/null ; then
- echo "! No monkeysphere user found! Please create a monkeysphere system user with bash as its shell."
- problemsfound=$(($problemsfound+1))
-fi
-
-if ! [ -d "$SYSDATADIR" ] ; then
- echo "! no $SYSDATADIR directory found. Please create it."
- problemsfound=$(($problemsfound+1))
-fi
-
-echo "Checking host GPG key..."
-if (( "$keysfound" < 1 )); then
- echo "! No host key found."
- echo " - Recommendation: run 'monkeysphere-server gen-key'"
- problemsfound=$(($problemsfound+1))
-elif (( "$keysfound" > 1 )); then
- echo "! More than one host key found?"
- # FIXME: recommend a way to resolve this
- problemsfound=$(($problemsfound+1))
-else
- create=$(echo "$seckey" | grep ^sec: | cut -f6 -d:)
- expire=$(echo "$seckey" | grep ^sec: | cut -f7 -d:)
- fingerprint=$(echo "$seckey" | grep ^fpr: | head -n1 | cut -f10 -d:)
- # check for key expiration:
- if [ "$expire" ]; then
- if (( "$expire" < "$curdate" )); then
- echo "! Host key is expired."
- echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
- problemsfound=$(($problemsfound+1))
- elif (( "$expire" < "$warndate" )); then
- echo "! Host key expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
- echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
- problemsfound=$(($problemsfound+1))
- fi
- fi
-
- # and weirdnesses:
- if [ "$create" ] && (( "$create" > "$curdate" )); then
- echo "! Host key was created in the future(?!). Is your clock correct?"
- echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
- problemsfound=$(($problemsfound+1))
- fi
-
- # check for UserID expiration:
- echo "$seckey" | grep ^uid: | cut -d: -f6,7,10 | \
- while IFS=: read create expire uid ; do
- # FIXME: should we be doing any checking on the form
- # of the User ID? Should we be unmangling it somehow?
-
- if [ "$create" ] && (( "$create" > "$curdate" )); then
- echo "! User ID '$uid' was created in the future(?!). Is your clock correct?"
- echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
- problemsfound=$(($problemsfound+1))
- fi
- if [ "$expire" ] ; then
- if (( "$expire" < "$curdate" )); then
- echo "! User ID '$uid' is expired."
- # FIXME: recommend a way to resolve this
- problemsfound=$(($problemsfound+1))
- elif (( "$expire" < "$warndate" )); then
- echo "! User ID '$uid' expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
- # FIXME: recommend a way to resolve this
- problemsfound=$(($problemsfound+1))
- fi
- fi
- done
-
-# FIXME: verify that the host key is properly published to the
-# keyservers (do this with the non-privileged user)
-
-# FIXME: check that there are valid, non-expired certifying signatures
-# attached to the host key after fetching from the public keyserver
-# (do this with the non-privileged user as well)
-
-# FIXME: propose adding a revoker to the host key if none exist (do we
-# have a way to do that after key generation?)
-
- # Ensure that the ssh_host_rsa_key file is present and non-empty:
- echo
- echo "Checking host SSH key..."
- if [ ! -s "${SYSDATADIR}/ssh_host_rsa_key" ] ; then
- echo "! The host key as prepared for SSH (${SYSDATADIR}/ssh_host_rsa_key) is missing or empty."
- problemsfound=$(($problemsfound+1))
- else
- if [ $(ls -l "${SYSDATADIR}/ssh_host_rsa_key" | cut -f1 -d\ ) != '-rw-------' ] ; then
- echo "! Permissions seem wrong for ${SYSDATADIR}/ssh_host_rsa_key -- should be 0600."
- problemsfound=$(($problemsfound+1))
- fi
-
- # propose changes needed for sshd_config (if any)
- if ! grep -q "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$" "$sshd_config"; then
- echo "! $sshd_config does not point to the monkeysphere host key (${SYSDATADIR}/ssh_host_rsa_key)."
- echo " - Recommendation: add a line to $sshd_config: 'HostKey ${SYSDATADIR}/ssh_host_rsa_key'"
- problemsfound=$(($problemsfound+1))
- fi
- if badhostkeys=$(grep -i '^HostKey' "$sshd_config" | grep -v "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$") ; then
- echo "! $sshd_config refers to some non-monkeysphere host keys:"
- echo "$badhostkeys"
- echo " - Recommendation: remove the above HostKey lines from $sshd_config"
- problemsfound=$(($problemsfound+1))
- fi
-
- # FIXME: test (with ssh-keyscan?) that the running ssh
- # daemon is actually offering the monkeysphere host key.
-
- fi
-fi
-
-# FIXME: look at the ownership/privileges of the various keyrings,
-# directories housing them, etc (what should those values be? can
-# we make them as minimal as possible?)
-
-# FIXME: look to see that the ownertrust rules are set properly on the
-# authentication keyring
-
-# FIXME: make sure that at least one identity certifier exists
-
-# FIXME: look at the timestamps on the monkeysphere-generated
-# authorized_keys files -- warn if they seem out-of-date.
-
-# FIXME: check for a cronjob that updates monkeysphere-generated
-# authorized_keys?
-
-echo
-echo "Checking for MonkeySphere-enabled public-key authentication for users ..."
-# Ensure that User ID authentication is enabled:
-if ! grep -q "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$" "$sshd_config"; then
- echo "! $sshd_config does not point to monkeysphere authorized keys."
- echo " - Recommendation: add a line to $sshd_config: 'AuthorizedKeysFile ${SYSDATADIR}/authorized_keys/%u'"
- problemsfound=$(($problemsfound+1))
-fi
-if badauthorizedkeys=$(grep -i '^AuthorizedKeysFile' "$sshd_config" | grep -v "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$") ; then
- echo "! $sshd_config refers to non-monkeysphere authorized_keys files:"
- echo "$badauthorizedkeys"
- echo " - Recommendation: remove the above AuthorizedKeysFile lines from $sshd_config"
- problemsfound=$(($problemsfound+1))
-fi
-
-if [ "$problemsfound" -gt 0 ]; then
- echo "When the above $problemsfound issue"$(if [ "$problemsfound" -eq 1 ] ; then echo " is" ; else echo "s are" ; fi)" resolved, please re-run:"
- echo " monkeysphere-server diagnostics"
-else
- echo "Everything seems to be in order!"
-fi
-
-}
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# Monkeysphere authentication list-certifiers subcommand
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@fifthhorseman.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008-2009, and are all released under the GPL,
-# version 3 or later.
-
-# list the host certifiers
-
-list_certifiers() {
-
-local keys
-local key
-
-# find trusted keys in authentication keychain
-keys=$(gpg_sphere "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-keys --with-colons --fingerprint" | \
- grep ^pub: | cut -d: -f2,5 | egrep '^(u|f):' | cut -d: -f2)
-
-# output keys
-for key in $keys ; do
- gpg_sphere "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key --fingerprint $key"
-done
-
-}
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# Monkeysphere authentication remove-certifier subcommand
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@finestructure.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008-2009, and are all released under the GPL,
-# version 3 or later.
-
-# delete a certifiers key from the host keyring
-
-remove_certifier() {
-
-local keyID
-local fingerprint
-
-keyID="$1"
-if [ -z "$keyID" ] ; then
- failure "You must specify the key ID of a key to remove."
-fi
-
-if gpg_sphere "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key 0x${keyID}!" ; then
- read -p "Really remove above listed identity certifier? (y/N) " OK; OK=${OK:-N}
- if [ "${OK/y/Y}" != 'Y' ] ; then
- failure "Identity certifier not removed."
- fi
-else
- failure
-fi
-
-# delete the requested key
-if gpg_sphere "--delete-key --batch --yes 0x${keyID}!" ; then
- # delete key from host keyring as well
- gpg_core --delete-key --batch --yes "0x${keyID}!"
-
- # update the trustdb for the authentication keyring
- gpg_sphere "--check-trustdb"
-
- echo
- echo "Identity certifier removed."
-else
- failure "Problem removing identity certifier."
-fi
-
-}
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# Monkeysphere authentication update-users subcommand
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@finestructure.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008-2009, and are all released under the GPL,
-# version 3 or later.
-
-update_users() {
-
-local unames
-local uname
-local authorizedKeysDir
-local authorizedUserIDs
-
-if [ "$1" ] ; then
- # get users from command line
- unames="$@"
-else
- # or just look at all users if none specified
- unames=$(getent passwd | cut -d: -f1)
-fi
-
-RETURN=0
-
-# set mode
-MODE="authorized_keys"
-
-# set gnupg home
-GNUPGHOME="$GNUPGHOME_SPHERE"
-
-# the authorized_keys directory
-authorizedKeysDir="${SYSDATADIR}/authentication/authorized_keys"
-
-# check to see if the gpg trust database has been initialized
-if [ ! -s "${GNUPGHOME}/trustdb.gpg" ] ; then
- failure "GNUPG trust database uninitialized. Please see MONKEYSPHERE-SERVER(8)."
-fi
-
-# make sure the authorized_keys directory exists
-mkdir -p "${authorizedKeysDir}"
-
-# loop over users
-for uname in $unames ; do
- # check all specified users exist
- if ! id "$uname" >/dev/null ; then
- log error "----- unknown user '$uname' -----"
- continue
- fi
-
- log verbose "----- user: $uname -----"
-
- # make temporary directory
- TMPLOC=$(mktemp -d ${MATMPDIR}/tmp.XXXXXXXXXX) || failure "Could not create temporary directory!"
-
- # trap to delete temporary directory on exit
- trap "rm -rf $TMPLOC" EXIT
-
- # create temporary authorized_user_ids file
- TMP_AUTHORIZED_USER_IDS="${TMPLOC}/authorized_user_ids"
- touch "$TMP_AUTHORIZED_USER_IDS"
-
- # create temporary authorized_keys file
- AUTHORIZED_KEYS="${TMPLOC}/authorized_keys"
- touch "$AUTHORIZED_KEYS"
-
- # set restrictive permissions on the temporary files
- # FIXME: is there a better way to do this?
- chmod 0700 "$TMPLOC"
- chmod 0600 "$AUTHORIZED_KEYS"
- chmod 0600 "$TMP_AUTHORIZED_USER_IDS"
- chown -R "$MONKEYSPHERE_USER" "$TMPLOC"
-
- # process authorized_user_ids file
- log debug "checking for authorized_user_ids..."
- # translating ssh-style path variables
- authorizedUserIDs=$(translate_ssh_variables "$uname" "$AUTHORIZED_USER_IDS")
- if [ -s "$authorizedUserIDs" ] ; then
- # check permissions on the authorized_user_ids file path
- if check_key_file_permissions "$uname" "$authorizedUserIDs" ; then
- # copy user authorized_user_ids file to temporary
- # location
- cat "$authorizedUserIDs" > "$TMP_AUTHORIZED_USER_IDS"
-
- # export needed variables
- export AUTHORIZED_KEYS
- export TMP_AUTHORIZED_USER_IDS
-
- # process authorized_user_ids file, as monkeysphere user
- su_monkeysphere_user \
- ". ${SYSSHAREDIR}/common; process_authorized_user_ids $TMP_AUTHORIZED_USER_IDS"
- RETURN="$?"
- else
- log debug "not processing authorized_user_ids."
- fi
- else
- log debug "empty or absent authorized_user_ids file."
- fi
-
- # add user-controlled authorized_keys file if specified translate
- # ssh-style path variables
- rawAuthorizedKeys=$(translate_ssh_variables "$uname" "$RAW_AUTHORIZED_KEYS")
- if [ "$rawAuthorizedKeys" != 'none' ] ; then
- log debug "checking for raw authorized_keys..."
- if [ -s "$rawAuthorizedKeys" ] ; then
- # check permissions on the authorized_keys file path
- if check_key_file_permissions "$uname" "$rawAuthorizedKeys" ; then
- log verbose "adding raw authorized_keys file... "
- cat "$rawAuthorizedKeys" >> "$AUTHORIZED_KEYS"
- else
- log debug "not adding raw authorized_keys file."
- fi
- else
- log debug "empty or absent authorized_keys file."
- fi
- fi
-
- # move the new authorized_keys file into place
- if [ -s "$AUTHORIZED_KEYS" ] ; then
- # openssh appears to check the contents of the authorized_keys
- # file as the user in question, so the file must be readable
- # by that user at least.
-
- # but in general, we don't want the user tampering with this
- # file directly, so we'll adopt this approach: Own the file by
- # the monkeysphere-server invoker (usually root, but should be
- # the same uid that sshd is launched as); change the group of
- # the file so that members of the user's group can read it.
-
- # FIXME: is there a better way to do this?
- chown $(whoami) "$AUTHORIZED_KEYS" && \
- chgrp $(id -g "$uname") "$AUTHORIZED_KEYS" && \
- chmod g+r "$AUTHORIZED_KEYS" && \
- mv -f "$AUTHORIZED_KEYS" "${authorizedKeysDir}/${uname}" || \
- {
- log error "Failed to install authorized_keys for '$uname'!"
- rm -f "${authorizedKeysDir}/${uname}"
- # indicate that there has been a failure:
- RETURN=1
- }
- else
- rm -f "${authorizedKeysDir}/${uname}"
- fi
-
- # unset the trap
- trap - EXIT
-
- # destroy temporary directory
- rm -rf "$TMPLOC"
-done
-
-}
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# Monkeysphere host add-hostname subcommand
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@finestructure.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008-2009, and are all released under the GPL,
-# version 3 or later.
-
-# add hostname user ID to server key
-
-add_hostname() {
-
-local userID
-local fingerprint
-local tmpuidMatch
-local line
-local adduidCommand
-
-if [ -z "$1" ] ; then
- failure "You must specify a hostname to add."
-fi
-
-userID="ssh://${1}"
-
-fingerprint=$(fingerprint_server_key)
-
-# match to only ultimately trusted user IDs
-tmpuidMatch="u:$(echo $userID | gpg_escape)"
-
-# find the index of the requsted user ID
-# NOTE: this is based on circumstantial evidence that the order of
-# this output is the appropriate index
-if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
- | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
- failure "Host userID '$userID' already exists."
-fi
-
-echo "The following user ID will be added to the host key:"
-echo " $userID"
-read -p "Are you sure you would like to add this user ID? (y/N) " OK; OK=${OK:=N}
-if [ ${OK/y/Y} != 'Y' ] ; then
- failure "User ID not added."
-fi
-
-# edit-key script command to add user ID
-adduidCommand=$(cat <<EOF
-adduid
-$userID
-
-
-save
-EOF
-)
-
-# execute edit-key script
-if echo "$adduidCommand" | \
- gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
-
- show_key
-
- echo
- echo "NOTE: User ID added to key, but key not published."
- echo "Run '$PGRM publish-key' to publish the new user ID."
-else
- failure "Problem adding user ID."
-fi
-
-}
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# Monkeysphere host add-revoker subcommand
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@finestructure.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008, and are all released under the GPL, version 3
-# or later.
-
-# add a revoker to the host key
-
-add_revoker() {
-
-# FIXME: implement!
-failure "not implemented yet!"
-
-}
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# Monkeysphere host diagnostics subcommand
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@finestructure.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008-2009, and are all released under the GPL,
-# version 3 or later.
-
-# check on the status and validity of the key and public certificates
-
-diagnostics() {
-
-local seckey
-local keysfound
-local curdate
-local warnwindow
-local warndate
-local create
-local expire
-local uid
-local fingerprint
-local badhostkeys
-local sshd_config
-local problemsfound=0
-
-# FIXME: what's the correct, cross-platform answer?
-sshd_config=/etc/ssh/sshd_config
-seckey=$(gpg_host --list-secret-keys --fingerprint --with-colons --fixed-list-mode)
-keysfound=$(echo "$seckey" | grep -c ^sec:)
-curdate=$(date +%s)
-# warn when anything is 2 months away from expiration
-warnwindow='2 months'
-warndate=$(advance_date $warnwindow +%s)
-
-if ! id monkeysphere >/dev/null ; then
- echo "! No monkeysphere user found! Please create a monkeysphere system user with bash as its shell."
- problemsfound=$(($problemsfound+1))
-fi
-
-if ! [ -d "$SYSDATADIR" ] ; then
- echo "! no $SYSDATADIR directory found. Please create it."
- problemsfound=$(($problemsfound+1))
-fi
-
-echo "Checking host GPG key..."
-if (( "$keysfound" < 1 )); then
- echo "! No host key found."
- echo " - Recommendation: run 'monkeysphere-server gen-key'"
- problemsfound=$(($problemsfound+1))
-elif (( "$keysfound" > 1 )); then
- echo "! More than one host key found?"
- # FIXME: recommend a way to resolve this
- problemsfound=$(($problemsfound+1))
-else
- create=$(echo "$seckey" | grep ^sec: | cut -f6 -d:)
- expire=$(echo "$seckey" | grep ^sec: | cut -f7 -d:)
- fingerprint=$(echo "$seckey" | grep ^fpr: | head -n1 | cut -f10 -d:)
- # check for key expiration:
- if [ "$expire" ]; then
- if (( "$expire" < "$curdate" )); then
- echo "! Host key is expired."
- echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
- problemsfound=$(($problemsfound+1))
- elif (( "$expire" < "$warndate" )); then
- echo "! Host key expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
- echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
- problemsfound=$(($problemsfound+1))
- fi
- fi
-
- # and weirdnesses:
- if [ "$create" ] && (( "$create" > "$curdate" )); then
- echo "! Host key was created in the future(?!). Is your clock correct?"
- echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
- problemsfound=$(($problemsfound+1))
- fi
-
- # check for UserID expiration:
- echo "$seckey" | grep ^uid: | cut -d: -f6,7,10 | \
- while IFS=: read create expire uid ; do
- # FIXME: should we be doing any checking on the form
- # of the User ID? Should we be unmangling it somehow?
-
- if [ "$create" ] && (( "$create" > "$curdate" )); then
- echo "! User ID '$uid' was created in the future(?!). Is your clock correct?"
- echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
- problemsfound=$(($problemsfound+1))
- fi
- if [ "$expire" ] ; then
- if (( "$expire" < "$curdate" )); then
- echo "! User ID '$uid' is expired."
- # FIXME: recommend a way to resolve this
- problemsfound=$(($problemsfound+1))
- elif (( "$expire" < "$warndate" )); then
- echo "! User ID '$uid' expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
- # FIXME: recommend a way to resolve this
- problemsfound=$(($problemsfound+1))
- fi
- fi
- done
-
-# FIXME: verify that the host key is properly published to the
-# keyservers (do this with the non-privileged user)
-
-# FIXME: check that there are valid, non-expired certifying signatures
-# attached to the host key after fetching from the public keyserver
-# (do this with the non-privileged user as well)
-
-# FIXME: propose adding a revoker to the host key if none exist (do we
-# have a way to do that after key generation?)
-
- # Ensure that the ssh_host_rsa_key file is present and non-empty:
- echo
- echo "Checking host SSH key..."
- if [ ! -s "${SYSDATADIR}/ssh_host_rsa_key" ] ; then
- echo "! The host key as prepared for SSH (${SYSDATADIR}/ssh_host_rsa_key) is missing or empty."
- problemsfound=$(($problemsfound+1))
- else
- if [ $(ls -l "${SYSDATADIR}/ssh_host_rsa_key" | cut -f1 -d\ ) != '-rw-------' ] ; then
- echo "! Permissions seem wrong for ${SYSDATADIR}/ssh_host_rsa_key -- should be 0600."
- problemsfound=$(($problemsfound+1))
- fi
-
- # propose changes needed for sshd_config (if any)
- if ! grep -q "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$" "$sshd_config"; then
- echo "! $sshd_config does not point to the monkeysphere host key (${SYSDATADIR}/ssh_host_rsa_key)."
- echo " - Recommendation: add a line to $sshd_config: 'HostKey ${SYSDATADIR}/ssh_host_rsa_key'"
- problemsfound=$(($problemsfound+1))
- fi
- if badhostkeys=$(grep -i '^HostKey' "$sshd_config" | grep -v "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$") ; then
- echo "! $sshd_config refers to some non-monkeysphere host keys:"
- echo "$badhostkeys"
- echo " - Recommendation: remove the above HostKey lines from $sshd_config"
- problemsfound=$(($problemsfound+1))
- fi
-
- # FIXME: test (with ssh-keyscan?) that the running ssh
- # daemon is actually offering the monkeysphere host key.
-
- fi
-fi
-
-# FIXME: look at the ownership/privileges of the various keyrings,
-# directories housing them, etc (what should those values be? can
-# we make them as minimal as possible?)
-
-# FIXME: look to see that the ownertrust rules are set properly on the
-# authentication keyring
-
-# FIXME: make sure that at least one identity certifier exists
-
-# FIXME: look at the timestamps on the monkeysphere-generated
-# authorized_keys files -- warn if they seem out-of-date.
-
-# FIXME: check for a cronjob that updates monkeysphere-generated
-# authorized_keys?
-
-echo
-echo "Checking for MonkeySphere-enabled public-key authentication for users ..."
-# Ensure that User ID authentication is enabled:
-if ! grep -q "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$" "$sshd_config"; then
- echo "! $sshd_config does not point to monkeysphere authorized keys."
- echo " - Recommendation: add a line to $sshd_config: 'AuthorizedKeysFile ${SYSDATADIR}/authorized_keys/%u'"
- problemsfound=$(($problemsfound+1))
-fi
-if badauthorizedkeys=$(grep -i '^AuthorizedKeysFile' "$sshd_config" | grep -v "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$") ; then
- echo "! $sshd_config refers to non-monkeysphere authorized_keys files:"
- echo "$badauthorizedkeys"
- echo " - Recommendation: remove the above AuthorizedKeysFile lines from $sshd_config"
- problemsfound=$(($problemsfound+1))
-fi
-
-if [ "$problemsfound" -gt 0 ]; then
- echo "When the above $problemsfound issue"$(if [ "$problemsfound" -eq 1 ] ; then echo " is" ; else echo "s are" ; fi)" resolved, please re-run:"
- echo " monkeysphere-server diagnostics"
-else
- echo "Everything seems to be in order!"
-fi
-
-}
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# Monkeysphere host extend-key subcommand
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@finestructure.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008-2009, and are all released under the GPL,
-# version 3 or later.
-
-# extend the lifetime of a host key:
-
-extend_key() {
-
-local fpr=$(fingerprint_server_key)
-local extendTo="$1"
-
-# get the new expiration date
-extendTo=$(get_gpg_expiration "$extendTo")
-
-gpg_host --quiet --command-fd 0 --edit-key "$fpr" <<EOF
-expire
-$extendTo
-save
-EOF
-
-echo
-echo "NOTE: Host key expiration date adjusted, but not yet published."
-echo "Run '$PGRM publish-key' to publish the new expiration date."
-
-}
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# Monkeysphere host gen-key subcommand
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@finestructure.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008-2009, and are all released under the GPL,
-# version 3 or later.
-
-gen_key() {
-
-local keyType="RSA"
-local keyLength="2048"
-local keyUsage="auth"
-local keyExpire
-local hostName=$(hostname -f)
-local userID
-local keyParameters
-local fingerprint
-
-# check for presense of secret key
-# FIXME: is this the proper test to be doing here?
-fingerprint_server_key >/dev/null \
- && failure "An OpenPGP host key already exists."
-
-# 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
- hostName="$1"
- shift;
- break
- ;;
- esac
-done
-
-userID="ssh://${hostName}"
-
-# prompt about key expiration if not specified
-keyExpire=$(get_gpg_expiration "$keyExpire")
-
-# set key parameters
-keyParameters=\
-"Key-Type: $keyType
-Key-Length: $keyLength
-Key-Usage: $keyUsage
-Name-Real: $userID
-Expire-Date: $keyExpire"
-
-echo "The following key parameters will be used for the host private key:"
-echo "$keyParameters"
-
-read -p "Generate key? (Y/n) " OK; OK=${OK:=Y}
-if [ ${OK/y/Y} != 'Y' ] ; then
- failure "aborting."
-fi
-
-# add commit command
-# must include blank line!
-keyParameters=\
-"${keyParameters}
-
-%commit
-%echo done"
-
-log verbose "generating host key..."
-echo "$keyParameters" | gpg_host --batch --gen-key
-
-# find the key fingerprint of the newly generated key
-fingerprint=$(fingerprint_server_key)
-
-# export host ownertrust to authentication keyring
-log verbose "setting ultimate owner trust for host key..."
-echo "${fingerprint}:6:" | gpg_authentication "--import-ownertrust"
-
-# translate the private key to ssh format, and export to a file
-# for sshs usage.
-# NOTE: assumes that the primary key is the proper key to use
-(umask 077 && \
- gpg_host --export-secret-key "$fingerprint" | \
- openpgp2ssh "$fingerprint" > "${SYSDATADIR}/ssh_host_rsa_key")
-log info "SSH host private key output to file: ${SYSDATADIR}/ssh_host_rsa_key"
-ssh-keygen -y -f "${SYSDATADIR}/ssh_host_rsa_key" > "${SYSDATADIR}/ssh_host_rsa_key.pub"
-log info "SSH host public key output to file: ${SYSDATADIR}/ssh_host_rsa_key.pub"
-gpg_authentication "--export-options export-minimal --armor --export 0x${fingerprint}\!" > "${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
-log info "SSH host public key in OpenPGP form: ${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
-
-# show info about new key
-show_key
-
-}
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# Monkeysphere host import-key subcommand
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@finestructure.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008-2009 and are all released under the GPL,
-# version 3 or later.
-
-import_key() {
-
-local hostName=$(hostname -f)
-local keyFile="/etc/ssh/ssh_host_rsa_key"
-local keyExpire
-local userID
-
-# check for presense of secret key
-# FIXME: is this the proper test to be doing here?
-fingerprint_server_key >/dev/null \
- && failure "An OpenPGP host key already exists."
-
-# 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
- hostName="$1"
- shift
- ;;
- break
- ;;
- esac
-done
-
-if [ ! -f "$keyFile" ] ; then
- failure "SSH secret key file '$keyFile' not found."
-fi
-
-userID="ssh://${hostName}"
-
-# prompt about key expiration if not specified
-keyExpire=$(get_gpg_expiration "$keyExpire")
-
-echo "The following key parameters will be used for the host private key:"
-echo "Import: $keyFile"
-echo "Name-Real: $userID"
-echo "Expire-Date: $keyExpire"
-
-read -p "Import key? (Y/n) " OK; OK=${OK:=Y}
-if [ ${OK/y/Y} != 'Y' ] ; then
- failure "aborting."
-fi
-
-log verbose "importing ssh key..."
-# translate ssh key to a private key
-(umask 077 && \
- pem2openpgp "$userID" "$keyExpire" < "$sshKey" | gpg_host --import)
-
-# find the key fingerprint of the newly converted key
-fingerprint=$(fingerprint_server_key)
-
-# export host ownertrust to authentication keyring
-log verbose "setting ultimate owner trust for host key..."
-echo "${fingerprint}:6:" | gpg_host "--import-ownertrust"
-echo "${fingerprint}:6:" | gpg_authentication "--import-ownertrust"
-
-# export public key to file
-gpg_authentication "--export-options export-minimal --armor --export 0x${fingerprint}\!" > "${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
-log info "SSH host public key in OpenPGP form: ${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
-
-# show info about new key
-show_key
-
-}
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# Monkeysphere host publish-key subcommand
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@finestructure.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008-2009, and are all released under the GPL, version 3
-# or later.
-
-# publish server key to keyserver
-
-publish_key() {
-
-read -p "Really publish host key to $KEYSERVER? (y/N) " OK; OK=${OK:=N}
-if [ ${OK/y/Y} != 'Y' ] ; then
- failure "key not published."
-fi
-
-# find the key fingerprint
-fingerprint=$(fingerprint_server_key)
-
-# publish host key
-# FIXME: need to define how to do this
-#gpg_authentication "--keyserver $KEYSERVER --send-keys '0x${fingerprint}!'"
-echo "not published!!!"
-
-}
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# Monkeysphere host revoke-hostname subcommand
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@finestructure.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008-2009, and are all released under the GPL,
-# version 3 or later.
-
-# revoke hostname user ID from host key
-
-revoke_hostname() {
-
-local userID
-local fingerprint
-local tmpuidMatch
-local line
-local uidIndex
-local message
-local revuidCommand
-
-if [ -z "$1" ] ; then
- failure "You must specify a hostname to revoke."
-fi
-
-echo "WARNING: There is a known bug in this function."
-echo "This function has been known to occasionally revoke the wrong user ID."
-echo "Please see the following bug report for more information:"
-echo "http://web.monkeysphere.info/bugs/revoke-hostname-revoking-wrong-userid/"
-read -p "Are you sure you would like to proceed? (y/N) " OK; OK=${OK:=N}
-if [ ${OK/y/Y} != 'Y' ] ; then
- failure "aborting."
-fi
-
-userID="ssh://${1}"
-
-fingerprint=$(fingerprint_server_key)
-
-# match to only ultimately trusted user IDs
-tmpuidMatch="u:$(echo $userID | gpg_escape)"
-
-# find the index of the requsted user ID
-# NOTE: this is based on circumstantial evidence that the order of
-# this output is the appropriate index
-if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
- | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
- uidIndex=${line%%:*}
-else
- failure "No non-revoked user ID '$userID' is found."
-fi
-
-echo "The following host key user ID will be revoked:"
-echo " $userID"
-read -p "Are you sure you would like to revoke this user ID? (y/N) " OK; OK=${OK:=N}
-if [ ${OK/y/Y} != 'Y' ] ; then
- failure "User ID not revoked."
-fi
-
-message="Hostname removed by monkeysphere-server $DATE"
-
-# edit-key script command to revoke user ID
-revuidCommand=$(cat <<EOF
-$uidIndex
-revuid
-y
-4
-$message
-
-y
-save
-EOF
- )
-
-# execute edit-key script
-if echo "$revuidCommand" | \
- gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
-
- show_key
-
- echo
- echo "NOTE: User ID revoked, but revocation not published."
- echo "Run '$PGRM publish-key' to publish the revocation."
-else
- failure "Problem revoking user ID."
-fi
-
-}
+++ /dev/null
-# -*-shell-script-*-
-# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
-
-# Monkeysphere host revoke-key subcommand
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@finestructure.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008-2009, and are all released under the GPL,
-# version 3 or later.
-
-# revoke host key
-
-revoke_key() {
-
-# FIXME: implement!
-failure "not implemented yet!"
-
-}
projects / monkeysphere.git / commitdiff