298 lines
12 KiB
Bash
Executable file
298 lines
12 KiB
Bash
Executable file
#!/bin/bash
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#type -t logerror >/dev/null || logerror() {echo blubb; }
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if type -t logerror > /dev/null| grep -q 'function'; then
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echo there is a logerror function
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else
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echo there is NO logerror function
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logerror () {
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echo "$1" >&2
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}
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fi
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usage(){
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cat << EOF
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Usage: ssh-agent-start-or-restart [[-c]|[--create-only]]|[[-t]|[--token-only]]|[[-k]|[--key-only]]|[[-r]|[-f]|[--readd]|[--force]] [<ssh-identity>]
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If started only with <ssh-identity>, the script looks up in configured identity-path \$SSH_IDENTITIES_DIR (${SSH_IDENTITIES_DIR}) if it can find a directory named after <ssh-identity>.
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If no <ssh_identity> is given, the identity is set to \$SSH_DEFAULT_IDENTITY ($SSH_DEFAULT_IDENTITY) configured via Environment.
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IF \$SSH_DEFAULT_IDENTITY is also not set, default is the SSH_DEFAULT_IDENTITY
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The output is the name of the file, where ssh-agent infomations are hold to load it to current shell for further actions.
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Use "$ eval \$(<outputfilenam>)", if you want to load the SSH_AUTH_SOCK and SSH_AGENT_PID in current shell or shorter "$ loadagent [<ssh_identity>]"
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-c|--create-only Create or restart only the agent. Do not load any
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key or token in it.
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The Output is used for loading the agent in the current
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shell. (loadagent <identity>)
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-t|--token-only To add or renew only configured pkcs11-hardware-token
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configured in ${SSH_IDENTITIES_DIR}/<ssh-identity>,
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just use this.
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-k|--key-only To add or renew only configured keys configured in
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${SSH_IDENTITIES_DIR}/<ssh-identity>, just use this.
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-r|-f|--readd-token|--force remove all in ${SSH_IDENTITIES_DIR}/<ssh-identity>
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configured keys and tokens and readd them again.
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Depends on -t an -k Option to select wheter only
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keys or tokens only. If no -t and -k is given, all
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keys and token are removed and readded again.
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Just to be asked for password again, if you plugged off
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hardware-token and plugged it in again.
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--rm|--remove remove keys and token instead of adding them.
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-h|--info Show this info
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EOF
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}
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createonly=false
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tokenonly=false
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readd=false
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keyonly=false
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remove=false
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while :; do
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case $1 in
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-c|--create-only)
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createonly=true
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shift
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;;
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-t|--token-only)
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tokenonly=true
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shift
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;;
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-k|--key-only)
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keyonly=true
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shift
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;;
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-r|-f|--readd-token|--force)
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readd=true
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shift
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;;
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--rm|--remove)
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remove=true
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shift
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;;
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-h|--info)
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usage
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exit 0
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;;
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-*)
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echo "Unknown urgument: »$1«"
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exit 1
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;;
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*)
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#ssh_identity=${1-${SSH_DEFAULT_IDENTITY}}
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ssh_identity=${1}
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break
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;;
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esac
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done
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SCRIPTENTRY
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[ -z "${SSH_IDENTITIES_DIR+x}" ] && { SSH_IDENTITIES_DIR="${SSH_IDENTITIES_DEFAULT_DIR-${HOME}/.ssh/identities}"; export SSH_IDENTITIES_DIR; }
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[ -z "${SSH_AGENTS_DIR+x}" ] && { SSH_AGENTS_DIR=${SSH_AGENTS_DEFAULT_DIR-~/.ssh/agents}; export SSH_AGENTS_DIR; }
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[ -z "${SSH_AGENT_SOCKETS_DIR+x}" ] && { SSH_AGENT_SOCKETS_DIR=${SSH_AGENT_SOCKETS_DEFAULT_DIR-~/.ssh/agents}; export SSH_AGENT_SOCKETS_DIR; }
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[ -z "${SSH_AGENT_OPTIONS+x}" ] && { SSH_AGENT_OPTIONS=${SSH_AGENT_DEFAULT_OPTIONS--t 7200 }; export SSH_AGENT_OPTIONS; }
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logdebug "SSH_AGENTS_DIR: $SSH_AGENTS_DIR" >&2
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logdebug "SSH_AGENT_SOCKETS_DIR: $SSH_AGENT_SOCKETS_DIR" >&2
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logdebug "SSH_IDENTITIES_DIR: $SSH_IDENTITIES_DIR" >&2
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logdebug "ssh-identität: ${ssh_identity}" >&2
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[ -z "${SSH_AGENTS_DIR-x}" ] || mkdir -vp "$SSH_AGENTS_DIR"
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[ -z "${SSH_AGENT_SOCKETS_DIR-x}" ] || mkdir -vp "$SSH_AGENT_SOCKETS_DIR"
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[ -z "${SSH_IDENTITIES_DIR-x}" ] || mkdir -vp "$SSH_IDENTITIES_DIR"
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agent-start-or-restart () {
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ENTRY
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local ssh_identity
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local agentfile
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local agentsocket
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local ret
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if [ -n "${1+x}" ]; then
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ssh_identity="${1}"
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identitydir=${SSH_IDENTITIES_DIR}/${ssh_identity}
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loginfo "ssh-identität: ${ssh_identity}" >&2
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if [ -d ${identitydir} ]; then
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[ -e "${identitydir}/config" ] && . "${identitydir}/config"
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agentfile="${SSH_AGENTS_DIR}/agent-${ssh_identity}-$(hostname)"
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agentsocket="${SSH_AGENT_SOCKETS_DIR}/socket-${ssh_identity}-$(hostname)"
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logtrace "agentfile: $agentfile" >&2
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logtrace "agentsocket: $agentsocket" >&2
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logdebug "SSH_AGENT_OPTIONS: $SSH_AGENT_OPTIONS"
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if (! $keyonly && ! $tokenonly ) && $remove ; then
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loginfo "delete keys and tokens in ssh-agent $agentsocket"
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loginfo "$(ssh-runinagent $agentfile ssh-add -D 2>&1)"
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createonly=true
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else
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if [ -e $agentfile ]; then
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local msg
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# TODO make in runinagent
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msg="$(/bin/sh -c "unset SSH_AUTH_SOCK SSH_AGENT_PID; . $agentfile >/dev/null 2>&1; ssh-add -l 2>&1")"
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local ret=$?
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logtrace "$msg"
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case $ret in
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0)
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loginfo "agent is running" >&2
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;;
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1)
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loginfo "agent is running, but:" >&2
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logwarn "$msg"
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;;
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2)
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loginfo "former agent is not running -> start it" >&2
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[ -e $agentsocket ] && { logdebug -n "remove socketfile: $( rm -v "$agentsocket" )"; }
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logdebug "$(ssh-agent -a $agentsocket ${SSH_AGENT_OPTIONS} > $agentfile )"
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loginfo "agent started" >&2
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;;
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esac
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else
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loginfo "agent did not exist -> create it" >&2
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logdebug "ssh-agent -a $agentsocket \> $agentfile"
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logdebug "$(ssh-agent -a $agentsocket $SSH_AGENT_OPTIONS > $agentfile )"
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loginfo "agent started" >&2
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fi
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fi
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logdebug "ssh-agent for identity »$ssh_identity«: $agentfile"
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$createonly && logdebug "current loaded keys after action:
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$(ssh-runinagent $agentfile ssh-add -l)"
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echo $agentfile
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ret=0
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else
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logwarn "ssh-identity »$ssh_identity« is not configured. Please create $identitydir and add keys"
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ret=2
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fi
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else
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if which gnome-keyring-daemon >/dev/null 2>&1; then
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loginfo "no identity given -> gnome-keyrings ssh-agent"
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agentfile="${SSH_AGENTS_DIR}/agent-gnome_session-$(hostname)"
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agentsocket="${SSH_AGENT_SOCKETS_DIR}/socket-gnome-session-$(hostname)"
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gnome-keyring-daemon -s > $agentfile
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logdebug "$(cat $agentfile)"
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logdebug "ssh-agent for identity »$ssh_identity«: $agentfile"
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# logdebug "currently loaded keys after action:
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#$(ssh-runinagent $agentfile ssh-add -l)"
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echo $agentfile
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ret=0
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else
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logwarn "no identity given -> exit"
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ret=1
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fi
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fi
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EXIT
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return $ret
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}
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agent-load-identity-keys () {
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ENTRY
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local ssh_identity
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local agentfile
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local agentsocket
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local fingerprints
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declare -a fingerprints
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local fingerprint
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local tokenfingerprint
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if [ -n "${1+x}" ]; then
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ssh_identity="${1}"
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identitydir=${SSH_IDENTITIES_DIR}/${ssh_identity}
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if [ -d ${identitydir} ]; then
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[ -e "${identitydir}/config" ] && . "${identitydir}/config"
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agentfile="${SSH_AGENTS_DIR}/agent-${ssh_identity}-$(hostname)"
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agentsocket="${SSH_AGENT_SOCKETS_DIR}/socket-${ssh_identity}-$(hostname)"
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logdebug "SSH_ADD_OPTIONS: $SSH_ADD_OPTIONS"
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logtrace "agentfile: $agentfile" >&2
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logtrace "agentsocket: $agentsocket" >&2
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logtrace "identitydir: $identitydir"
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fingerprints=( $(ssh-runinagent $agentfile "ssh-add -l|awk '{print \$2}'") )
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logdebug "fingerprints from loaded keys before action:"
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for f in ${fingerprints[*]};do
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logdebug "$f"
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done
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if ! $tokenonly ; then
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for key in $(ls ${SSH_IDENTITIES_DIR}/${ssh_identity}/id_*|grep -v "pub$\|so$\|config$\|public$"); do
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fingerprint=$(ssh-keygen -l -f $key|awk '{print $2}')
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if [[ ${fingerprints[*]} =~ "$fingerprint" ]]; then
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logdebug "key: $(basename $key) (with fp $fingerprint) is loaded" >&2
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if $readd || $remove ; then
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$readd && logwarn "re-add key $key" >&2
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$remove && logwarn "remove key $key" >&2
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loginfo "$(ssh-runinagent $agentfile ssh-add ${SSH_ADD_OPTIONS} -d ${key} 2>&1)"
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$remove || loginfo "$(ssh-runinagent $agentfile ssh-add ${SSH_ADD_OPTIONS} ${key} 2>&1)"
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fi
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else
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logwarn "key: $key is not loaded -> load it" >&2
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#loginfo "$(ssh-runinagent $agentfile ssh-add ${SSH_ADD_OPTIONS} -d ${key} 2>&1)"
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$remove || loginfo "$(ssh-runinagent $agentfile ssh-add ${SSH_ADD_OPTIONS} ${key} 2>&1)"
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fi
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done
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fi
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if ! $keyonly ; then
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for key in $(ls ${SSH_IDENTITIES_DIR}/${ssh_identity}/*|grep "\.so$"); do
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tokenfingerprint="$(ssh-keygen -l -D $key|tr -s ' '|awk '{print $2}')"
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if [[ ${fingerprints[*]} =~ "$tokenfingerprint" ]]; then
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logdebug "token: $key ($fingerprint) is loaded" >&2
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if $readd || $remove ; then
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$readd && logwarn "re-add token $key" >&2
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$remove && logwarn "remove token $key" >&2
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loginfo "$(ssh-runinagent $agentfile ssh-add ${SSH_ADD_OPTIONS} -e ${key} 2>&1)"
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$remove || loginfo "$(ssh-runinagent $agentfile ssh-add ${SSH_ADD_OPTIONS} -s ${key} 2>&1)"
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fi
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else
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logwarn "token: $key is not loaded -> load it" >&2
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loginfo "$(ssh-runinagent $agentfile ssh-add ${SSH_ADD_OPTIONS} -e ${key} 2>&1)"
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$remove || loginfo "$(ssh-runinagent $agentfile ssh-add ${SSH_ADD_OPTIONS} -s ${key} 2>&1)"
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fi
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done
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fi
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logdebug "currently loaded keys after action:
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$(ssh-runinagent $agentfile ssh-add -l)"
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else
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logwarn "ssh-identity $ssh_identity is not configured. Please create $identitydir and add keys"
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fi
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fi
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EXIT
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}
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ssh-runinagent () {
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ENTRY
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local agentfile
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local command
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local agentfile=${1}
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shift
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local sshcommand=${@}
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logtrace "run command »$sshcommand« in agent $agentfile" >&2
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if [ -e "$agentfile" ]; then
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/bin/sh -c "unset SSH_AUTH_SOCK SSH_AGENT_PID; . $agentfile >/dev/null 2>/dev/null; $sshcommand"
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ret=$?
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else
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logwarn "agentfile not existent" >&2
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ret=99
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fi
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EXIT
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return $ret
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}
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agent-start-or-restart $ssh_identity
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! $createonly && agent-load-identity-keys $ssh_identity
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SCRIPTEXIT
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exit $?
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