| 1 | #!/bin/sh |
| 2 | ### BEGIN INIT INFO |
| 3 | # Provides: ashd |
| 4 | # Required-Start: $local_fs $remote_fs $network $syslog |
| 5 | # Required-Stop: $local_fs $remote_fs $network $syslog |
| 6 | # Default-Start: 2 3 4 5 |
| 7 | # Default-Stop: 0 1 6 |
| 8 | # Short-Description: The ashd HTTP server |
| 9 | ### END INIT INFO |
| 10 | |
| 11 | set -e |
| 12 | |
| 13 | . /lib/lsb/init-functions |
| 14 | |
| 15 | PATH=/usr/local/bin:/usr/local/sbin:$PATH |
| 16 | HTPARSER="$(which htparser || true)" |
| 17 | PIDFILE=/var/run/ashd.pid |
| 18 | GRACE_PERIOD=10 |
| 19 | USER=nobody |
| 20 | CHROOT=/var/tmp |
| 21 | PORTSPEC="plain" |
| 22 | ROOTSPEC="dirplex /srv/www" |
| 23 | [ -r /etc/default/locale ] && . /etc/default/locale |
| 24 | [ -r /etc/default/ashd ] && . /etc/default/ashd |
| 25 | [ -x "$HTPARSER" ] || exit 0 |
| 26 | |
| 27 | start() { |
| 28 | export LANG |
| 29 | log_daemon_msg "Starting HTTP server" "ashd" |
| 30 | if start-stop-daemon -S -p "$PIDFILE" -qa "$HTPARSER" -- -Sf -p "$PIDFILE" -u "$USER" -r "$CHROOT" $PORTSPEC -- $ROOTSPEC; then |
| 31 | log_success_msg |
| 32 | else |
| 33 | log_end_msg $? |
| 34 | fi |
| 35 | } |
| 36 | |
| 37 | kill_wholly() { |
| 38 | start-stop-daemon -K -p "$PIDFILE" -qx "$HTPARSER" |
| 39 | } |
| 40 | |
| 41 | kill_listen() { |
| 42 | pid=$(cat "$PIDFILE" 2>/dev/null || true) |
| 43 | if [ -z "$pid" ]; then |
| 44 | log_failure_msg "no pid file" |
| 45 | return 1 |
| 46 | fi |
| 47 | if ! kill -0 "$pid"; then |
| 48 | log_failure_msg "invalid saved pid" |
| 49 | return 1 |
| 50 | fi |
| 51 | log_progress_msg "listen" |
| 52 | kill -TERM "$pid" |
| 53 | for try in 0 1 2 3 4 5; do |
| 54 | sleep $try |
| 55 | case "$(wc -l <"$PIDFILE")" in |
| 56 | 1) continue ;; |
| 57 | 0|2) return 0 ;; |
| 58 | *) |
| 59 | log_failure_msg "could not parse pid file" |
| 60 | return 1 |
| 61 | ;; |
| 62 | esac |
| 63 | done |
| 64 | log_failure_msg "htparser did not stop listening, killing it completely" |
| 65 | kill_wholly |
| 66 | start-stop-daemon -K -p "$PIDFILE" -qx "$HTPARSER" |
| 67 | return 1 |
| 68 | } |
| 69 | |
| 70 | stop_listen() { |
| 71 | log_daemon_msg "Stopping HTTP server" "ashd" |
| 72 | kill_listen |
| 73 | log_end_msg $? |
| 74 | } |
| 75 | |
| 76 | stop_gracefully() { |
| 77 | log_daemon_msg "Stopping HTTP server" "ashd" |
| 78 | if ! kill_listen ; then |
| 79 | log_end_msg $? |
| 80 | return 1 |
| 81 | fi |
| 82 | pid=$(cat "$PIDFILE" 2>/dev/null || true) |
| 83 | if kill -0 "$pid" 2>/dev/null; then |
| 84 | log_progress_msg "waiting for remaining connections..." |
| 85 | for try in $(seq "$GRACE_PERIOD"); do |
| 86 | sleep 1 |
| 87 | if ! kill -0 "$pid" 2>/dev/null; then |
| 88 | log_success_msg |
| 89 | return 0 |
| 90 | fi |
| 91 | done |
| 92 | else |
| 93 | log_success_msg |
| 94 | return 0 |
| 95 | fi |
| 96 | log_progress_msg "terminating remaining connections" |
| 97 | if kill_wholly; then |
| 98 | log_success_msg |
| 99 | else |
| 100 | log_end_msg $? |
| 101 | fi |
| 102 | } |
| 103 | |
| 104 | case "$1" in |
| 105 | start) |
| 106 | start |
| 107 | ;; |
| 108 | stop) |
| 109 | stop_gracefully |
| 110 | ;; |
| 111 | restart) |
| 112 | stop_listen |
| 113 | # Truncate PID file to allow start-stop-daemon to work despite remaining connections. |
| 114 | >"$PIDFILE" |
| 115 | start |
| 116 | ;; |
| 117 | esac |
| 118 | |
| 119 | exit 0 |