SSH_KEYGEN="/usr/bin/ssh-keygen"
SSH_ADD="/usr/bin/ssh-add"

export SSH_KEYGEN SSH_ADD

IDENTITY_FILE="${HOME}/.ssh/ident"
SSH_AGENT_FILE="${HOME}/.ssh/agent.info"

GPG_TTY=$(tty)

export IDENTITY_FILE SSH_AGENT_FILE GPG_TTY

alias ssh_init_github="ssh-add ${HOME}/.ssh/ident-github ${HOME}/.ssh/getcred_github.sh"

function ssh-keygen() {
	local ident="${1:-${IDENTITY_FILE}}"
	${SSH_KEYGEN} -f "${ident}" "$@"
}

function ssh-add() {
	local ident="${1}"
	local ask_pass ident_file

	if [[ "${ident}" ]]
	then
		ask_pass="${HOME}/.ssh/getcred_${ident}.sh"
		ident_file="${HOME}/.ssh/ident-${ident}"
	else
		ask_pass="${HOME}/.ssh/getcred.sh"
		ident_file="${HOME}/.ssh/ident"
	fi

	if [[ '-' != "${ident:0:1}" ]]
	then
		DISPLAY=:0.0 SSH_ASKPASS="${ask_pass}" \
			${SSH_ADD} ${ident_file} 2>/dev/null </dev/null
	else
		${SSH_ADD} "$@"
	fi
}

function ssh-init-agent() {
	local CAT="/bin/cat"
	local PS="/bin/ps"
	local ECHO="/bin/echo"
	local SSH_AGENT="/usr/bin/ssh-agent"

	[[ -e "${SSH_AGENT_FILE}" ]] && eval `${CAT} "${SSH_AGENT_FILE}"` >/dev/null

	if [[ "x" != x${SSH_AGENT_PID} ]]
	then
		if [[ "ssh-agent" = "`${PS} -p ${SSH_AGENT_PID} -o comm=`" ]]
		then
			return
		fi
	fi

	${ECHO} -n "start ssh-agent ... "
	${SSH_AGENT} >"${SSH_AGENT_FILE}"
	if [[ 0 -eq $? ]]
	then
		eval `${CAT} "${SSH_AGENT_FILE}"` >/dev/null
		${ECHO} "OK"
		ssh-add
	else
		${ECHO} "FAILED"
	fi
}

function gpg-init-agent() {
	local AWK="/usr/bin/awk"
	local SED="/bin/sed"
	local LSOF="/usr/bin/lsof"
	local CAT="/bin/cat"
	local PS="/bin/ps"
	local ECHO="/bin/echo"
	local CUT="/usr/bin/cut"
	local GPG_AGENT="/usr/bin/gpg-agent"
	local GPG_AGENT_ARGS="--daemon --allow-preset-passphrase"
	local GPG_PRESET="/usr/libexec/gpg-preset-passphrase"
	local CREDDIR="${1}"
	local KEYGRIP="D17D6099DA4F7CF580991F6525BAC9DB841C9B30"
	local SUBKEYGRIP="BE4A9914142B488736792B9CBE01AE3A94D96E7A"

	export GPG_AGENT_SOCK="${RUNDIR}/gnupg/S.gpg-agent"
	local SOCK_OPEN_PID="$(test -e "${GPG_AGENT_SOCK}" &&\
		${LSOF} -F p ${GPG_AGENT_SOCK} | sed '/p/s/^.//;te;d;:e')"

	GPG_AGENT_PID="$(${PS} -h -U ${USER} -o pid -o comm |\
		${AWK} '/gpg-agent/{print $1}')"

	if [[ "${SOCK_OPEN_PID}" && ${GPG_AGENT_PID} == ${SOCK_OPEN_PID} ]]
	then
		return
	else
		${ECHO} -n "start gpg-agent ... "
		eval ${GPG_AGENT} ${GPG_AGENT_ARGS}
		if [[ 0 -eq $? ]]
		then
			${CAT} "${CREDDIR}/gpg.pw" | ${GPG_PRESET} --preset ${KEYGRIP}
			${CAT} "${CREDDIR}/gpg.pw" | ${GPG_PRESET} --preset ${SUBKEYGRIP}
			${ECHO} "OK"
			export GPG_AGENT_PID="$(${PS} -h -U ${USER} -o pid -o comm |\
				${AWK} '/gpg-agent/{print $1}')"
		else
			${ECHO} "FAILED"
		fi
	fi
}

# vim: set ft=sh ts=4 sw=4: