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#!/bin/bash
#-----------------------------------------------------------------------------
I2P_USER="i2p"
WRAPPER_CMD="/usr/bin/java-service-wrapper"
WRAPPER_CONF="/opt/i2p/wrapper.config"
PIDDIR="/run/i2p"
PIDFILE="$PIDDIR/i2p.pid"
TIMEOUT=30
#-----------------------------------------------------------------------------
fail() {
printf "\e[1;31m>>> ERROR:\033[0m %s\n" "$*"
exit 1
}
debug() {
printf "\e[1;33m>>> DEBUG:\033[0m %s\n" "$*"
}
check_user() {
if [[ "$(id -un)" != "$I2P_USER" ]]; then
#debug "current user: $(id -un) dropping to user: $I2P_USER"
if [[ ! -d "$PIDDIR" ]]; then
mkdir -p "$PIDDIR"
chown ${I2P_USER}:${I2P_USER} "$PIDDIR"
fi
SCRIPT_PATH="$(cd $(dirname $0) && pwd)/$(basename $0)"
su - "$I2P_USER" -c "${SCRIPT_PATH} $@"
exit $?
fi
}
init_vars() {
[[ ! -r "$WRAPPER_CONF" ]] &&
fail "Unable to read \$WRAPPER_CONF: ${WRAPPER_CONF}"
[[ ! -x "$WRAPPER_CMD" ]] &&
fail "Unable to find or execute \$WRAPPER_CMD: ${WRAPPER_CMD}"
[[ ! $(grep -E ^I2P_USER $0) && "$EUID" = "0" ]] &&
fail "Attempting to start as root! Please edit $(basename $0) and set the variable \$I2P_USER"
[[ "$(id -un "$I2P_USER")" != "$I2P_USER" ]] &&
fail "\$I2P_USER does not exist: $I2P_USER"
COMMAND_LINE="\"$WRAPPER_CMD\" \"$WRAPPER_CONF\" wrapper.syslog.ident=\"i2prouter\" wrapper.name=\"i2prouter\""
}
get_wrapper_pid() {
pgrep -u "$I2P_USER" -f 'wrapper.name=i2prouter'
}
get_pid() {
pgrep -u "$I2P_USER" -f 'jar'
}
check_if_running() {
unset pid
if [[ -f "$PIDFILE" ]]; then
if [[ -r "$PIDFILE" ]]; then
pid=$(cat "$PIDFILE")
#debug "pid:$pid get_pid:$(get_pid)"
if [[ ! "$pid" ]]; then
pid=$(get_pid)
if [[ ! "$pid" ]]; then
echo "Removing stale pid file: $PIDFILE"
rm -f "$PIDFILE"
fi
else
[[ "$pid" != "$(get_pid)" ]] &&
fail "\$PIDFILE $PIDFILE differs from what is actually running!"
fi
else
fail "Cannot read \$PIDFILE: $PIDFILE"
fi
fi
}
_console() {
if [[ ! "$pid" ]]; then
trap '' INT QUIT
eval $COMMAND_LINE
[[ $? != 0 ]] && fail "Failed to launch the wrapper!"
else
echo "I2P Service is already running"
fi
}
_start() {
if [[ ! "$pid" ]]; then
echo -n "Starting I2P Service"
COMMAND_LINE+=" wrapper.daemonize=TRUE"
eval $COMMAND_LINE
[[ $? != 0 ]] && fail "Failed to launch the wrapper!"
i=0
while [[ ! "$pid" || $i < $TIMEOUT ]]; do
echo -n "."
sleep 1
check_if_running
((i++))
done
[[ $(get_pid) ]] &&
echo " done (pid $pid)" || fail "timeout: Failed to start wrapper!"
else
echo "I2P Service is already running"
fi
}
_restart() {
[[ "$pid" ]] &&
kill -USR1 $(get_wrapper_pid) || echo "I2P Service is not running"
}
_stop() {
if [[ "$pid" ]]; then
echo -n "Stopping I2P Service"
kill -TERM "$pid"
[[ $? != 0 ]] && fail "Unable to stop I2P Service: kill -TERM $pid"
i=0
while [[ "$pid" || $i > $TIMEOUT ]]; do
echo -n "."
sleep 1
[[ ! $(get_pid) ]] && unset pid
((i++))
done
if [[ "$pid" ]]; then
fail "timeout: Failed to stop wrapper! (pid: $pid)"
else
echo " done"
[[ "$1" = 'start' ]] && _start
fi
else
echo "I2P Service is not running."
fi
}
_graceful() {
if [[ "$pid" ]]; then
echo "Stopping I2P Service gracefully..."
kill -HUP "$pid"
[[ $? != 0 ]] && fail "Unable to stop I2P Service."
else
echo "I2P Service is not running."
fi
}
_status() {
[[ "$pid" ]] &&
echo "I2P Service is running: PID:$pid" || echo "I2P Service is not running."
}
_dump() {
if [[ "$pid" ]]; then
echo "Dumping threads..."
kill -QUIT "$pid"
[[ $? != 0 ]] &&
fail "Failed to dump threads" || echo "Thread Dump is available in wrapper.log"
else
echo "I2P Service is not running."
fi
}
#-----------------------------------------------------------------------------
check_user "$@"
init_vars
check_if_running
case "$1" in
'console') _console
;;
'start') _start
;;
'stop') _stop
;;
'graceful') _graceful
;;
'restart') _restart
;;
'status') _status
;;
'dump') _dump
;;
*) echo "Usage: $(basename $0) [command]"
echo
echo "Commands:"
echo " console Launch in the current console"
echo " start Start in the background as a daemon process"
echo " stop Stop if running as a daemon or in another console"
echo " graceful Stop gracefully, may take up to 11 minutes for all tunnels to close"
echo " restart Restart the JVM"
echo " status Query the current status"
echo " dump Request a Java thread dump if running"
echo
;;
esac
exit 0
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