X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=src%2Fmonkeysphere-host;h=c454354f5b60fd1e85d541401021d25614cd5045;hb=e71c7bb4dff26178f714cd0fcdbb3058effa4066;hp=19ab5fcf8e7c84c72c13cff342b0c30872b524c9;hpb=7d4b4815db8ba2f6f984a18a90b50032cf9158ba;p=monkeysphere.git diff --git a/src/monkeysphere-host b/src/monkeysphere-host index 19ab5fc..c454354 100755 --- a/src/monkeysphere-host +++ b/src/monkeysphere-host @@ -3,27 +3,37 @@ # monkeysphere-host: Monkeysphere host admin tool # # The monkeysphere scripts are written by: -# Jameson Rollins +# Jameson Rollins # Jamie McClelland # Daniel Kahn Gillmor +# Micah Anderson # -# They are Copyright 2008, and are all released under the GPL, version 3 -# or later. +# They are Copyright 2008-2009, and are all released under the GPL, +# version 3 or later. ######################################################################## +set -e + +# set the pipefail option so pipelines fail on first command failure +set -o pipefail + PGRM=$(basename $0) SYSSHAREDIR=${MONKEYSPHERE_SYSSHAREDIR:-"/usr/share/monkeysphere"} export SYSSHAREDIR . "${SYSSHAREDIR}/common" || exit 1 -SYSDATADIR=${MONKEYSPHERE_SYSDATADIR:-"/var/lib/monkeysphere/host"} +SYSDATADIR=${MONKEYSPHERE_SYSDATADIR:-"/var/lib/monkeysphere"} export SYSDATADIR -# monkeysphere temp directory, in sysdatadir to enable atomic moves of -# authorized_keys files -MSTMPDIR="${SYSDATADIR}/tmp" -export MSTMPDIR +# sharedir for host functions +MHSHAREDIR="${SYSSHAREDIR}/mh" + +# datadir for host functions +MHDATADIR="${SYSDATADIR}/host" + +# host pub key files +HOST_KEY_FILE="${SYSDATADIR}/ssh_host_rsa_key.pub.gpg" # UTC date in ISO 8601 format if needed DATE=$(date -u '+%FT%T') @@ -44,119 +54,195 @@ usage: $PGRM [options] [args] Monkeysphere host admin tool. subcommands: + import-key (i) FILE NAME[:PORT] import existing ssh key to gpg show-key (s) output all host key information - extend-key (e) EXPIRE extend host key expiration + publish-key (p) publish host key to keyserver + set-expire (e) [EXPIRE] set host key expiration add-hostname (n+) NAME[:PORT] add hostname user ID to host key revoke-hostname (n-) NAME[:PORT] revoke hostname user ID - add-revoker (o) FINGERPRINT add a revoker to the host key - revoke-key (r) revoke host key - publish-key (p) publish server host key to keyserver - - expert - import-key (i) NAME[:PORT] import existing ssh key to gpg - --keyfile (-f) FILE key file to import - --expire (-e) EXPIRE date to expire - gen-key (g) NAME[:PORT] generate gpg key for the host - --length (-l) BITS key length in bits (2048) - --expire (-e) EXPIRE date to expire - --revoker (-r) FINGERPRINT add a revoker - diagnostics (d) monkeysphere host status + add-revoker (r+) [KEYID|FILE] add a revoker to the host key + revoke-key generate and/or publish revocation + certificate for host key version (v) show version number help (h,?) this help +See ${PGRM}(8) for more info. EOF } -# function to run command as monkeysphere user -su_monkeysphere_user() { - # if the current user is the monkeysphere user, then just eval - # command - if [ $(id -un) = "$MONKEYSPHERE_USER" ] ; then - eval "$@" +# function to interact with the gpg keyring +gpg_host() { + GNUPGHOME="$GNUPGHOME_HOST" gpg --no-greeting --quiet --no-tty "$@" +} + +# command to list the info about the host key, in colon format, to +# stdout +gpg_host_list() { + gpg_host --list-keys --with-colons --fixed-list-mode \ + --with-fingerprint --with-fingerprint \ + "0x${HOST_FINGERPRINT}!" + +} + +# command for edit key scripts, takes scripts on stdin +gpg_host_edit() { + gpg_host --command-fd 0 --edit-key "0x${HOST_FINGERPRINT}!" "$@" +} + +# export the host public key to the monkeysphere gpg pub key file +update_gpg_pub_file() { + log debug "updating openpgp public key file '$HOST_KEY_FILE'..." + gpg_host --export --armor --export-options export-minimal \ + "0x${HOST_FINGERPRINT}!" > "$HOST_KEY_FILE" +} - # otherwise su command as monkeysphere user +# load the host fingerprint into the fingerprint variable, using the +# export gpg pub key file +# FIXME: this seems much less than ideal, with all this temp keyring +# stuff. is there a way we can do this without having to create temp +# files? what if we stored the fingerprint in MHDATADIR/fingerprint? +load_fingerprint() { + if [ -f "$HOST_KEY_FILE" ] ; then + HOST_FINGERPRINT=$( \ + (FUBAR=$(mktemp -d) && export GNUPGHOME="$FUBAR" \ + && gpg --quiet --import \ + && gpg --quiet --list-keys --with-colons --with-fingerprint \ + && rm -rf "$FUBAR") <"$HOST_KEY_FILE" \ + | grep '^fpr:' | cut -d: -f10 ) else - su "$MONKEYSPHERE_USER" -c "$@" + failure "host key gpg pub file not found." fi } -# function to interact with the host gnupg keyring -gpg_host() { - local returnCode - - GNUPGHOME="$GNUPGHOME_HOST" - export GNUPGHOME - - # NOTE: we supress this warning because we need the monkeysphere - # user to be able to read the host pubring. we realize this might - # be problematic, but it's the simplest solution, without too much - # loss of security. - gpg --no-permission-warning "$@" - returnCode="$?" - - # always reset the permissions on the host pubring so that the - # monkeysphere user can read the trust signatures - chgrp "$MONKEYSPHERE_USER" "${GNUPGHOME_HOST}/pubring.gpg" - chmod g+r "${GNUPGHOME_HOST}/pubring.gpg" - - return "$returnCode" +# load the host fingerprint into the fingerprint variable, using the +# gpg host secret key +load_fingerprint_secret() { + HOST_FINGERPRINT=$( \ + gpg_host --list-secret-key --with-colons --with-fingerprint \ + | grep '^fpr:' | cut -d: -f10 ) } -# output just key fingerprint -fingerprint_server_key() { - # set the pipefail option so functions fails if can't read sec key - set -o pipefail +# fail if host key present +check_host_key() { + [ ! -s "$HOST_KEY_FILE" ] \ + || failure "An OpenPGP host key already exists." +} - gpg_host --list-secret-keys --fingerprint \ - --with-colons --fixed-list-mode 2> /dev/null | \ - grep '^fpr:' | head -1 | cut -d: -f10 2>/dev/null +# fail if host key not present +check_host_no_key() { + [ -s "$HOST_KEY_FILE" ] \ + || failure "You don't appear to have a Monkeysphere host key on this server. +Please run 'monkeysphere-host import-key...' first." } -# function to check for host secret key -check_host_keyring() { - fingerprint_server_key >/dev/null \ - || failure "You don't appear to have a Monkeysphere host key on this server. Please run 'monkeysphere-server gen-key' first." +# output the index of a user ID on the host key +# return 1 if user ID not found +find_host_userid() { + local userID="$1" + local tmpuidMatch + local line + + # match to only ultimately trusted user IDs + tmpuidMatch="u:$(echo $userID | gpg_escape)" + + # find the index of the requsted user ID + # NOTE: this is based on circumstantial evidence that the order of + # this output is the appropriate index + line=$(gpg_host_list | egrep '^(uid|uat):' | cut -f2,10 -d: | \ + grep -n -x -F "$tmpuidMatch" 2>/dev/null) + + if [ "$line" ] ; then + echo ${line%%:*} + return 0 + else + return 1 + fi +} + +# show info about the host key +show_key() { + local GNUPGHOME + local TMPSSH + local revokers + + # tmp gpghome dir + export GNUPGHOME=$(msmktempdir) + + # trap to remove tmp dir if break + trap "rm -rf $GNUPGHOME" EXIT + + # import the host key into the tmp dir + gpg --quiet --import <"$HOST_KEY_FILE" + + # create the ssh key + TMPSSH="$GNUPGHOME"/ssh_host_key_rsa_pub + openpgp2ssh <"$HOST_KEY_FILE" 2>/dev/null >"$TMPSSH" + + # get the gpg fingerprint + HOST_FINGERPRINT=$(gpg --quiet --list-keys --with-colons --with-fingerprint \ + | grep '^fpr:' | cut -d: -f10 ) + + # list the host key info + # FIXME: make no-show-keyring work so we don't have to do the grep'ing + # FIXME: can we show uid validity somehow? + gpg --list-keys --fingerprint \ + --list-options show-unusable-uids 2>/dev/null \ + | grep -v "^${GNUPGHOME}/pubring.gpg$" \ + | egrep -v '^-+$' + + # list revokers, if there are any + revokers=$(gpg --list-keys --with-colons --fixed-list-mode \ + | awk -F: '/^rvk:/{ print $10 }' ) + if [ "$revokers" ] ; then + echo "The following keys are allowed to revoke this host key:" + for key in $revokers ; do + echo "revoker: $key" + done + echo + fi + + # list the pgp fingerprint + echo "OpenPGP fingerprint: $HOST_FINGERPRINT" + + # list the ssh fingerprint + echo -n "ssh fingerprint: " + ssh-keygen -l -f "$TMPSSH" | awk '{ print $1, $2, $4 }' + + # remove the tmp file + trap - EXIT + rm -rf "$GNUPGHOME" } ######################################################################## # MAIN ######################################################################## -# unset variables that should be defined only in config file -unset KEYSERVER -unset AUTHORIZED_USER_IDS -unset RAW_AUTHORIZED_KEYS -unset MONKEYSPHERE_USER - # load configuration file -[ -e ${MONKEYSPHERE_SERVER_CONFIG:="${SYSCONFIGDIR}/monkeysphere-server.conf"} ] && . "$MONKEYSPHERE_SERVER_CONFIG" +[ -e ${MONKEYSPHERE_HOST_CONFIG:="${SYSCONFIGDIR}/monkeysphere-host.conf"} ] \ + && . "$MONKEYSPHERE_HOST_CONFIG" # set empty config variable with ones from the environment, or with # defaults -LOG_LEVEL=${MONKEYSPHERE_LOG_LEVEL:=${LOG_LEVEL:="INFO"}} -KEYSERVER=${MONKEYSPHERE_KEYSERVER:=${KEYSERVER:="pool.sks-keyservers.net"}} -AUTHORIZED_USER_IDS=${MONKEYSPHERE_AUTHORIZED_USER_IDS:=${AUTHORIZED_USER_IDS:="%h/.monkeysphere/authorized_user_ids"}} -RAW_AUTHORIZED_KEYS=${MONKEYSPHERE_RAW_AUTHORIZED_KEYS:=${RAW_AUTHORIZED_KEYS:="%h/.ssh/authorized_keys"}} -MONKEYSPHERE_USER=${MONKEYSPHERE_MONKEYSPHERE_USER:=${MONKEYSPHERE_USER:="monkeysphere"}} +LOG_LEVEL=${MONKEYSPHERE_LOG_LEVEL:=$LOG_LEVEL} +KEYSERVER=${MONKEYSPHERE_KEYSERVER:=$KEYSERVER} +CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:=$CHECK_KEYSERVER} +MONKEYSPHERE_USER=${MONKEYSPHERE_MONKEYSPHERE_USER:=$MONKEYSPHERE_USER} +PROMPT=${MONKEYSPHERE_PROMPT:=$PROMPT} # other variables -CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:="true"} -REQUIRED_USER_KEY_CAPABILITY=${MONKEYSPHERE_REQUIRED_USER_KEY_CAPABILITY:="a"} -GNUPGHOME_HOST=${MONKEYSPHERE_GNUPGHOME_HOST:="${SYSDATADIR}/gnupg-host"} -GNUPGHOME_AUTHENTICATION=${MONKEYSPHERE_GNUPGHOME_AUTHENTICATION:="${SYSDATADIR}/gnupg-authentication"} +GNUPGHOME_HOST=${MONKEYSPHERE_GNUPGHOME_HOST:="${MHDATADIR}"} # export variables needed in su invocation export DATE -export MODE -export MONKEYSPHERE_USER export LOG_LEVEL export KEYSERVER export CHECK_KEYSERVER -export REQUIRED_USER_KEY_CAPABILITY +export MONKEYSPHERE_USER +export PROMPT export GNUPGHOME_HOST -export GNUPGHOME_AUTHENTICATION export GNUPGHOME +export HOST_FINGERPRINT # get subcommand COMMAND="$1" @@ -164,66 +250,72 @@ COMMAND="$1" shift case $COMMAND in + 'import-key'|'i') + check_host_key + source "${MHSHAREDIR}/import_key" + import_key "$@" + ;; + 'show-key'|'show'|'s') - show_server_key + check_host_no_key + show_key ;; - 'extend-key'|'e') - check_host_keyring - extend_key "$@" + 'set-expire'|'extend-key'|'e') + check_host_no_key + load_fingerprint + source "${MHSHAREDIR}/set_expire" + set_expire "$@" ;; 'add-hostname'|'add-name'|'n+') - check_host_keyring + check_host_no_key + load_fingerprint + source "${MHSHAREDIR}/add_hostname" add_hostname "$@" ;; 'revoke-hostname'|'revoke-name'|'n-') - check_host_keyring + check_host_no_key + load_fingerprint + source "${MHSHAREDIR}/revoke_hostname" revoke_hostname "$@" ;; - 'add-revoker'|'o') - check_host_keyring + 'add-revoker'|'r+') + check_host_no_key + load_fingerprint + source "${MHSHAREDIR}/add_revoker" add_revoker "$@" ;; - 'revoke-key'|'r') - check_host_keyring + 'revoke-key') + check_host_no_key + load_fingerprint + source "${MHSHAREDIR}/revoke_key" revoke_key "$@" ;; 'publish-key'|'publish'|'p') - check_host_keyring - publish_server_key + check_host_no_key + load_fingerprint + source "${MHSHAREDIR}/publish_key" + publish_key ;; - 'expert'|'e') - check_user - SUBCOMMAND="$1" - shift - case "$SUBCOMMAND" in - 'import-key'|'i') - import_key "$@" - ;; - - 'gen-key'|'g') - gen_key "$@" - ;; - - 'diagnostics'|'d') - diagnostics - ;; - - *) - failure "Unknown expert subcommand: '$COMMAND' -Type '$PGRM help' for usage." - ;; - esac + 'diagnostics'|'d') + load_fingerprint + source "${MHSHAREDIR}/diagnostics" + diagnostics + ;; + + 'update-gpg-pub-file') + load_fingerprint_secret + update_gpg_pub_file ;; 'version'|'v') - echo "$VERSION" + version ;; '--help'|'help'|'-h'|'h'|'?')