417 lines
17 KiB
Bash
Executable file
417 lines
17 KiB
Bash
Executable file
#!/bin/bash
|
|
|
|
FILELOGLEVEL=DEBUG
|
|
DEFAULT_SOCKET_REMOTE=~/.ssh/ssh_from_remote_auth_sock
|
|
. $(dirname $0)/../logging
|
|
# loggerfactory
|
|
LANG=C
|
|
|
|
usage(){
|
|
cat << EOF
|
|
|
|
Usage: $(basename $0) [[-c]|[--create-only]]|[[-t]|[--token-only]]|[[-k]|[--key-only]]|[[-r]|[-f]|[--readd]|[--force]] [<ssh-identity>]
|
|
|
|
If started only with <ssh-identity>, the script looks up in configured identity-path \$SSH_IDENTITIES_DIR (${SSH_IDENTITIES_DIR}) if it can find a directory named after <ssh-identity>.
|
|
If no <ssh_identity> is given, the identity is set to \$SSH_DEFAULT_IDENTITY ($SSH_DEFAULT_IDENTITY) configured via Environment.
|
|
IF \$SSH_DEFAULT_IDENTITY is also not set, default is the SSH_DEFAULT_IDENTITY
|
|
|
|
The output is the name of the file, where ssh-agent infomations are hold to load it to current shell for further actions.
|
|
Use "$ eval \$(<outputfilenam>)", if you want to load the SSH_AUTH_SOCK and SSH_AGENT_PID in current shell or shorter "$ loadagent [<ssh_identity>]"
|
|
|
|
-c|--create-only Create or restart only the agent. Do not load any
|
|
key or token in it.
|
|
The Output is used for loading the agent in the current
|
|
shell. (loadagent <identity>)
|
|
-t|--token-only To add or renew only configured pkcs11-hardware-token
|
|
configured in ${SSH_IDENTITIES_DIR}/<ssh-identity>,
|
|
just use this.
|
|
-k|--key-only To add or renew only configured keys configured in
|
|
${SSH_IDENTITIES_DIR}/<ssh-identity>, just use this.
|
|
-r|-f|--readd-token|--force remove all in ${SSH_IDENTITIES_DIR}/<ssh-identity>
|
|
configured keys and tokens and readd them again.
|
|
Depends on -t an -k Option to select wheter only
|
|
keys or tokens only. If no -t and -k is given, all
|
|
keys and token are removed and readded again.
|
|
Just to be asked for password again, if you plugged off
|
|
hardware-token and plugged it in again.
|
|
--rm|--remove remove keys and token instead of adding them.
|
|
-h|--info Show this info
|
|
|
|
|
|
EOF
|
|
}
|
|
|
|
create_filenamebase() {
|
|
printf "%s" "${ssh_identity}-$(hostname)"
|
|
}
|
|
|
|
create_agentfilename() {
|
|
printf "%s" "${SSH_AGENTS_DIR}/agent-$(create_filenamebase)"
|
|
}
|
|
|
|
create_socketfilename() {
|
|
printf "%s" "${SSH_AGENT_SOCKETS_DIR}/socket-$(create_filenamebase)"
|
|
}
|
|
|
|
ssh_runinagent() {
|
|
|
|
local SSH_AUTH_SOCK
|
|
local SSH_AGENT_PID
|
|
local PKCS11_MODULE
|
|
local agentfile
|
|
local command
|
|
local agentfile=${1}
|
|
shift
|
|
local sshcommand=${@}
|
|
|
|
logdebug "agentfile: ${agentfile}"
|
|
logtrace "run command »$sshcommand« in agent $agentfile"
|
|
if [ -e "$agentfile" ]; then
|
|
#/bin/sh -c "unset SSH_AUTH_SOCK SSH_AGENT_PID PKCS11_MODULE; eval $(<$agentfile) >/dev/null 2>&1; echo SSH_AUTH_SOCK ${SSH_AUTH_SOCK:-not set} >&2; $sshcommand"
|
|
#unset SSH_AUTH_SOCK SSH_AGENT_PID PKCS11_MODULE
|
|
. $agentfile >/dev/null
|
|
logdebug "SSH_AUTH_SOCK: ${SSH_AUTH_SOCK:-not set}"
|
|
logdebug "SSH_AGENT_PID: ${SSH_AGENT_PID:-not set}"
|
|
logdebug "PKCS11_MODULE: ${PKCS11_MODULE:-not set}"
|
|
$sshcommand
|
|
ret=$?
|
|
else
|
|
logwarning "agentfile not existent"
|
|
ret=99
|
|
fi
|
|
|
|
return $ret
|
|
|
|
}
|
|
|
|
set_and_load_identity_config() {
|
|
|
|
# check if idendity directory an file config exists in it.
|
|
# if it exist, source it
|
|
#ssh_identity="${1}"
|
|
ssh_identity_dir="${SSH_IDENTITIES_DIR}/${ssh_identity}"
|
|
loginfo "ssh-identity: ${ssh_identity}"
|
|
loginfo "ssh-identity_dir: ${ssh_identity_dir}"
|
|
if [ -d ${ssh_identity_dir} ]; then
|
|
loginfo "Directory identity-dir ${ssh_identity_dir} exists. Use it"
|
|
else
|
|
logwarning "Directory identity-dir ${ssh_identity_dir} does not exist. Use default-config"
|
|
ssh_identity=default
|
|
ssh_identity_dir="${SSH_IDENTITIES_DIR}/${ssh_identity}"
|
|
fi
|
|
|
|
if [ -e "${ssh_identity_dir}/config" ]; then
|
|
logdebug "source ${ssh_identity_dir}/config"
|
|
unset SSH_AUTH_SOCK SSH_AGENT_PID PKCS11_MODULE SSH_AGENT_ALLOW_FROM_REMOTE SSH_ADD_OPTION
|
|
. "${ssh_identity_dir}/config"
|
|
fi
|
|
|
|
}
|
|
|
|
start_or_restart_local_agent() {
|
|
if [ -e "${ssh_agentfile}" ]
|
|
then
|
|
logdebug "agentfile ${ssh_agentfile} exists"
|
|
eval $(<$ssh_agentfile) >/dev/null 2>&1
|
|
logdebug "SSH_AUTH_SOCK: ${SSH_AUTH_SOCK:-not set}"
|
|
logdebug "SSH_AGENT_PID: ${SSH_AGENT_PID:-not set}"
|
|
logdebug "PKCS11_MODULE: ${PKCS11_MODULE:-not set}"
|
|
for i in $(pgrep -f ${SSH_AUTH_SOCK})
|
|
do
|
|
logdebug "$(stat ${SSH_AUTH_SOCK})"
|
|
logdebug "found pid: $i"
|
|
logdebug "is SSH_AGENT_PID set?" [ -n "${SSH_AGENT_PID:+x}" ]
|
|
logdebug "is $SSH_AGENT_PID same as found pid $i:" [ $i -eq ${SSH_AGENT_PID} ]
|
|
${REMOTE_UNUSED_AGENTS:-false} && { [ -n "${SSH_AGENT_PID:+x}" ] && [ $i -eq ${SSH_AGENT_PID} ] || { logwarning "kill unused ssh-agent with pid $i"; kill $i; }; }
|
|
done
|
|
if [ -e ${ssh_socketfile} ]
|
|
then
|
|
case $(pgrep -f ${SSH_AUTH_SOCK}|wc -l) in
|
|
0)
|
|
logdebug "no ssh-agents for file ${ssh_socketfile}"
|
|
ret=3
|
|
;;
|
|
1)
|
|
logdebug "one running agent for file ${ssh_socketfile}. Use it"
|
|
msg="$(ssh_runinagent $ssh_agentfile "ssh-add -v -l 2>&1")"
|
|
ret=$?
|
|
logdebug "SSH_AUTH_SOCK: $SSH_AUTH_SOCK"
|
|
;;
|
|
*)
|
|
logdebug "more than one ssh-agents for file ${ssh_socketfile}"
|
|
return 3
|
|
;;
|
|
esac
|
|
else
|
|
logdebug "remove socketfile: $( rm -v -f "$ssh_socketfile" )"
|
|
msg="$(ssh_runinagent $ssh_agentfile "ssh-add -v -l 2>&1")"
|
|
ret=$?
|
|
fi
|
|
logdebug "ret: $ret"
|
|
#msg="$(ssh-add -l 2>&1)"
|
|
logtrace "Output from check for running agent: $msg"
|
|
case $ret in
|
|
0)
|
|
logdebug "agent is running"
|
|
;;
|
|
1)
|
|
logdebug "agent is running, but:"
|
|
logwarning "$msg"
|
|
;;
|
|
2|3|99)
|
|
logdebug "former agent is not running -> start it"
|
|
logdebug "remove socketfile: $( rm -v -f "$ssh_socketfile" )"
|
|
logdebug "remove agentfile: $( rm -v -f "$ssh_agentfile" )"
|
|
#logdebug "$(ssh-agent -k)"
|
|
logdebug "SSH_AGENT_OPTIONS: $SSH_AGENT_OPTIONS"
|
|
logtrace "$(ssh-agent -a $ssh_socketfile ${SSH_AGENT_OPTIONS} > $ssh_agentfile )"
|
|
logdebug "PKCS11_MODULE: ${PKCS11_MODULE:-not set}"
|
|
sed '/^PKCS11_MODULE/d' ${ssh_agentfile}
|
|
[ -n "${PKCS11_MODULE:+x}" ] && logdebug "add PKCS11_MODULE to ${ssh_agentfile}"
|
|
[ -n "${PKCS11_MODULE:+x}" ] && echo "PKCS11_MODULE=$PKCS11_MODULE; export PKCS11_MODULE" >> ${ssh_agentfile}
|
|
logdebug "agent started"
|
|
;;
|
|
4)
|
|
logdebug "this is strange"
|
|
;;
|
|
esac
|
|
else
|
|
logdebug "ssh_agentfile ${ssh_agentfile} does not exist"
|
|
logdebug "remove socketfile: $( rm -v -f "$ssh_socketfile" )"
|
|
logdebug "remove agentfile: $( rm -v -f "$ssh_agentfile" )"
|
|
logdebug "SSH_AGENT_OPTIONS: $SSH_AGENT_OPTIONS"
|
|
logtrace "$(ssh-agent -a $ssh_socketfile ${SSH_AGENT_OPTIONS} > $ssh_agentfile )"
|
|
logdebug "PKCS11_MODULE: ${PKCS11_MODULE:-not set}"
|
|
sed '/^PKCS11_MODULE/d' ${ssh_agentfile}
|
|
[ -n "${PKCS11_MODULE:+x}" ] && logdebug "add PKCS11_MODULE to ${ssh_agentfile}"
|
|
[ -n "${PKCS11_MODULE:+x}" ] && echo "PKCS11_MODULE=$PKCS11_MODULE; export PKCS11_MODULE" >> ${ssh_agentfile}
|
|
logdebug "agent started"
|
|
fi
|
|
|
|
}
|
|
|
|
|
|
check_and_link_socket() {
|
|
|
|
if ${SSH_AGENT_ALLOW_FROM_REMOTE:-false}
|
|
then
|
|
logdebug "Remote agent allowed."
|
|
if [ -e ${DEFAULT_SOCKET_REMOTE} ]
|
|
then
|
|
logdebug "Link remote socket to ${ssh_socketfile}"
|
|
ln -f -s $(readlink -f ${DEFAULT_SOCKET_REMOTE}) ${ssh_socketfile}
|
|
[ -e ~/.ssh/p11m ] && . ~/.ssh/p11m
|
|
logdebug "Write new agentfile ${ssh_agentfile}"
|
|
cat << EOF > ${ssh_agentfile}
|
|
SSH_AUTH_SOCK=$ssh_socketfile; export SSH_AUTH_SOCK;
|
|
${P11M:+PKCS11_MODULE=${P11M}; export PKCS11_MODULE}
|
|
EOF
|
|
else
|
|
logdebug "Use local agent"
|
|
start_or_restart_local_agent
|
|
fi
|
|
else
|
|
logdebug "Only local agent allowed"
|
|
loginfo "SSH_AUTH_SOCK=${SSH_AUTH_SOCK} and ssh_agentfile=${ssh_agentfile}"
|
|
if [ -e ${ssh_agentfile} -a $(grep SSH_AUTH_SOCK ${ssh_agentfile} >/dev/null; echo $?) -eq 0 ]
|
|
then
|
|
logdebug "agentfile exists"
|
|
else
|
|
logdebug "agentfile is missing -> kill all ssh-agents for socket"
|
|
pkill -f ${ssh_socketfile}
|
|
fi
|
|
if [ -L ${ssh_socketfile} ]
|
|
then
|
|
logdebug "${ssh_socketfile} is symlinked to $(readlink -f ${ssh_socketfile}). Remove it"
|
|
rm ${ssh_socketfile}
|
|
else
|
|
if [ -e ${ssh_socketfile} -a $(pgrep -f ${ssh_socketfile} >/dev/null 2>&2; echo $?) ]
|
|
then
|
|
logdebug "Socket and agent for ${ssh_socketfile} are up and a running agent exist. Use it"
|
|
else
|
|
logdebug "No agent for socket ${ssh_socketfile} or socket does not exist, remove both if possible"
|
|
rm -f ${ssh_socketfile}
|
|
pkill -f ${ssh_socketfile}
|
|
fi
|
|
|
|
fi
|
|
start_or_restart_local_agent
|
|
fi
|
|
|
|
}
|
|
|
|
check_pubkeys_and_certs() {
|
|
|
|
for pubkey in $(ls ${SSH_IDENTITIES_DIR}/${ssh_identity}/id_*|grep "pub$\|public$"|grep -v "cert.pub"); do
|
|
if $( ls ${pubkey%.pub} 1>/dev/null 2>&1);then
|
|
logdebug "pubkey with privkey: ${pubkey} | ${pubkey%.pub}"
|
|
else
|
|
logdebug "pubkey without privkey: $pubkey"
|
|
pubkeysonly+=($pubkey)
|
|
fi
|
|
if [ -e "${pubkey%.pub}-cert.pub" ]; then
|
|
cert_exp_date=$(ssh-keygen -L -f "${pubkey%.pub}-cert.pub"|awk '$1 == "Valid:"{print $5}')
|
|
[ $(date +%s -d $cert_exp_date) -gt $(date +%s -d NOW) ] \
|
|
|| logwarning "CERTIFICATE IS NOT VALID ANYMORE: ${pubkey%.pub}-cert.pub"
|
|
[ $(date +%s -d $cert_exp_date) -lt $(date +%s -d "$SSH_CERT_VALIDITY_WARN_SEC") ] \
|
|
&& logwarning "CERTIFICATE expires in $(echo "scale=0; ( `date -d $cert_exp_date +%s` - `date -d now +%s`) / (24*3600)" | bc -l) days: ${pubkey%.pub}-cert.pub"
|
|
fi
|
|
logwarning "$(ssh-add -T ${pubkey})"
|
|
done
|
|
|
|
|
|
}
|
|
|
|
load_or_reload_identities() {
|
|
# If DISPLAY is set, ssh-add calls ssh-askpass, and if its in remote-terminal, it wont work
|
|
# So remember and unset DISPLAY, and set it at the end again, if it was set before
|
|
[ $DISPLAY ] && local DISPLAY_ORIG=$DISPLAY
|
|
[ $DISPLAY ] && logtrace "unset DISPLAY: $DISPLAY"
|
|
[ $DISPLAY ] && unset DISPLAY
|
|
|
|
logdebug " ssh_idendity=${ssh_identity}"
|
|
logdebug "Now load all identities for ${ssh_identity} from ${ssh_identity_dir}"
|
|
logdebug "PKCS11_MODULE: ${PKCS11_MODULE:-not set}"
|
|
local fingerprint
|
|
declare -a fingerprints
|
|
local pubkeysonly
|
|
declare -a pubkeysonly
|
|
fingerprints=( $(ssh-add -l|awk '{print $2}') )
|
|
logdebug "fingerprints from loaded keys before action:"
|
|
for f in ${fingerprints[@]};do
|
|
logdebug "$f"
|
|
done
|
|
for key in $(ls ${SSH_IDENTITIES_DIR}/${ssh_identity}/id_*|grep -v "pub$\|so$\|config$\|public$"); do
|
|
fingerprint=$(ssh-keygen -l -f $key|awk '{print $2}')
|
|
if [[ ${fingerprints[*]} =~ "$fingerprint" ]]; then
|
|
logdebug "key: $(basename $key) (with fp $fingerprint) is loaded"
|
|
else
|
|
logdebug "key: $key is not loaded -> load it"
|
|
logdebug "$(ssh-add ${SSH_ADD_OPTIONS} ${key} 2>&1)"
|
|
fi
|
|
done
|
|
for pubkey in $(ls ${SSH_IDENTITIES_DIR}/${ssh_identity}/id_*|grep "pub$\|public$"|grep -v "cert.pub"); do
|
|
if $( ls ${pubkey%.pub} 1>/dev/null 2>&1);then
|
|
logdebug "pubkey with privkey: ${pubkey} | ${pubkey%.pub}"
|
|
logdebug "$(ssh-add -T ${pubkey} || ssh-add ${pubkey})"
|
|
else
|
|
logdebug "pubkey without privkey: $pubkey"
|
|
pubkeysonly+=($pubkey)
|
|
fi
|
|
if [ -e "${pubkey%.pub}-cert.pub" ]; then
|
|
cert_exp_date=$(ssh-keygen -L -f "${pubkey%.pub}-cert.pub"|awk '$1 == "Valid:"{print $5}')
|
|
[ $(date +%s -d $cert_exp_date) -gt $(date +%s -d NOW) ] \
|
|
|| logwarning "CERTIFICATE IS NOT VALID ANYMORE: ${pubkey%.pub}-cert.pub"
|
|
[ $(date +%s -d $cert_exp_date) -lt $(date +%s -d "$SSH_CERT_VALIDITY_WARN_SEC") ] \
|
|
&& logwarning "CERTIFICATE expires in $(echo "scale=0; ( `date -d $cert_exp_date +%s` - `date -d now +%s`) / (24*3600)" | bc -l) days: ${pubkey%.pub}-cert.pub"
|
|
fi
|
|
done
|
|
for pubkey in ${pubkeysonly[@]}
|
|
do
|
|
logdebug "Pubkey: ${pubkey}"
|
|
logdebug " SSH_AUTH_SOCK=${SSH_AUTH_SOCK}"
|
|
ssh-add -T ${pubkey} >/dev/null
|
|
if [ $? -gt 0 ]
|
|
then
|
|
logdebug "Pubkey ${pubkey} is not usable"
|
|
if [ -n "${PKCS11_MODULE:+x}" ]
|
|
then
|
|
logdebug "PKCS11_MODULE is set ${PKCS11_MODULE:-not set}"
|
|
logdebug "$(ssh-add -e $PKCS11_MODULE)" && logdebug "$(ssh-add -s $PKCS11_MODULE)"
|
|
else
|
|
logdebug "No PKCS11_MODULE defined"
|
|
fi
|
|
else
|
|
logdebug "Pubkey ${pubkey} is usable"
|
|
if [ -n "${PKCS11_MODULE:+x}" ]
|
|
then
|
|
logdebug "PKCS11_MODULE is set ${PKCS11_MODULE:-not set}"
|
|
else
|
|
logdebug "No PKCS11_MODULE defined"
|
|
fi
|
|
fi
|
|
done
|
|
|
|
|
|
[ $DISPLAY_ORIG ] && logtrace "reset DISPLAY=$DISPLAY_ORIG"
|
|
[ $DISPLAY_ORIG ] && export DISPLAY=$DISPLAY_ORIG
|
|
|
|
}
|
|
|
|
##################################################
|
|
SCRIPTENTRY
|
|
|
|
createonly=false
|
|
tokenonly=false
|
|
readd=false
|
|
keyonly=false
|
|
remove=false
|
|
while :; do
|
|
case $1 in
|
|
-c|--create-only)
|
|
createonly=true
|
|
shift
|
|
;;
|
|
-h|--info)
|
|
usage
|
|
exit 0
|
|
;;
|
|
-*)
|
|
echo "Unknown urgument: »$1«" >&2
|
|
exit 1
|
|
;;
|
|
*)
|
|
#ssh_identity=${1-${SSH_DEFAULT_IDENTITY}}
|
|
ssh_identity=${1}
|
|
break
|
|
;;
|
|
esac
|
|
done
|
|
[ -z "${SSH_IDENTITIES_DIR+x}" ] && { SSH_IDENTITIES_DIR="${SSH_IDENTITIES_DEFAULT_DIR-${HOME}/.ssh/identities}"; export SSH_IDENTITIES_DIR; }
|
|
[ -z "${SSH_AGENTS_DIR+x}" ] && { SSH_AGENTS_DIR=${SSH_AGENTS_DEFAULT_DIR-~/.ssh/agents}; export SSH_AGENTS_DIR; }
|
|
[ -z "${SSH_AGENT_SOCKETS_DIR+x}" ] && { SSH_AGENT_SOCKETS_DIR=${SSH_AGENT_SOCKETS_DEFAULT_DIR-~/.ssh/agents}; export SSH_AGENT_SOCKETS_DIR; }
|
|
[ -z "${SSH_AGENT_OPTIONS+x}" ] && { SSH_AGENT_OPTIONS=${SSH_AGENT_DEFAULT_OPTIONS--t 7200 }; export SSH_AGENT_OPTIONS; }
|
|
logtrace " SSH_AGENTS_DIR: $SSH_AGENTS_DIR"
|
|
logtrace "SSH_AGENT_SOCKETS_DIR: $SSH_AGENT_SOCKETS_DIR"
|
|
logtrace " SSH_IDENTITIES_DIR: $SSH_IDENTITIES_DIR"
|
|
[ -z "${SSH_AGENTS_DIR-x}" ] || mkdir -vp "$SSH_AGENTS_DIR"
|
|
[ -z "${SSH_AGENT_SOCKETS_DIR-x}" ] || mkdir -vp "$SSH_AGENT_SOCKETS_DIR"
|
|
[ -z "${SSH_IDENTITIES_DIR-x}" ] || mkdir -vp "$SSH_IDENTITIES_DIR"
|
|
logdebug "ssh_idendity: ${ssh_identity}"
|
|
|
|
unset SSH_AUTH_SOCK SSH_AGENT_PID PKCS11_MODULE SSH_AGENT_ALLOW_FROM_REMOTE
|
|
|
|
ssh_agentfile=$(create_agentfilename)
|
|
ssh_socketfile=$(create_socketfilename)
|
|
|
|
set_and_load_identity_config ${ssh_identity}
|
|
sed -i -e '/PKCS11_MODULE/d' ${ssh_agentfile}
|
|
if [ -n ${PKCS11_MODULE:+x} ]
|
|
then
|
|
echo "PKCS11_MODULE=${PKCS11_MODULE}; export PKCS11_MODULE" >> ${ssh_agentfile}
|
|
fi
|
|
[ -e $ssh_agentfile ] && eval $(<${ssh_agentfile}) >/dev/null
|
|
logdebug " PKCS11_MODULE=${PKCS11_MODULE:-not set}"
|
|
|
|
logdebug " SSH_ADD_OPTIONS=${SSH_ADD_OPTIONS:-not set}"
|
|
logdebug "SSH_AGENT_ALLOW_FROM_REMOTE=${SSH_AGENT_ALLOW_FROM_REMOTE:-false}"
|
|
logdebug " PKCS11_MODULE=${PKCS11_MODULE:-not set}"
|
|
logdebug " P11M=${P11M:-not set}"
|
|
logdebug " SSH_AUTH_SOCK=${SSH_AUTH_SOCK:-not set}"
|
|
logdebug " SSH_AUTH_SOCK_REMOTE=${SSH_AUTH_SOCK_REMOTE:-not set}"
|
|
logdebug " ssh_idendity=${ssh_identity}"
|
|
|
|
check_and_link_socket
|
|
logdebug "SSH_AGENT_FILE=${ssh_agentfile}"
|
|
logdebug " SSH_AGENT_PID=${SSH_AGENT_PID}"
|
|
logdebug " SSH_AUTH_SOCK=${SSH_AUTH_SOCK}"
|
|
logdebug " ssh_idendity=${ssh_identity}"
|
|
$createonly || load_or_reload_identities
|
|
$createonly && printf "%s" "${ssh_agentfile}"
|
|
logtrace "cat ${ssh_agentfile}
|
|
$(cat ${ssh_agentfile})"
|
|
|
|
|
|
SCRIPTEXIT
|
|
loginfo "return with $res"
|
|
exit $res
|