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#! /bin/sh
##
## Command file to handle external webserver and proxy
## apache2 and tinyproxy.
##
## %CopyrightBegin%
##
## Copyright Ericsson AB 2012. All Rights Reserved.
##
## The contents of this file are subject to the Erlang Public License,
## Version 1.1, (the "License"); you may not use this file except in
## compliance with the License. You should have received a copy of the
## Erlang Public License along with this software. If not, it can be
## retrieved online at http://www.erlang.org/.
##
## Software distributed under the License is distributed on an "AS IS"
## basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
## the License for the specific language governing rights and limitations
## under the License.
##
## %CopyrightEnd%
##
## Author: Raimo Niskanen, Erlang/OTP
#
PATH=/usr/local/bin:/usr/local/sbin:/bin:/usr/bin:/sbin:/usr/sbin
SHELL=/bin/sh
unset CDPATH ENV BASH_ENV
IFS='
'
APACHE_MODS_AVAILABLE_DIR="/etc/apache2/mods-available"
MODS="authz_host.load mime.conf mime.load ssl.conf ssl.load"
APACHE_HTTP_PORT=8080
APACHE_HTTPS_PORT=8443
APACHE_SERVER_NAME=localhost
export APACHE_HTTP_PORT APACHE_HTTPS_PORT APACHE_SERVER_NAME
PROXY_SERVER_NAME=localhost
PROXY_PORT=8000
export PROXY_SERVER_NAME PROXY_PORT
# All stdout goes to the calling erlang port, therefore
# these helpers push all side info to stderr.
status () { echo "$@"; }
info () { echo "$@" 1>&2; }
die () { REASON="$?"; status "$@"; exit "$REASON"; }
cmd () { "$@" 1>&2; }
silent () { "$@" 1>/dev/null 2>&1; }
wait_for_pidfile () {
PIDFILE="${1:?Missing argument: PidFile}"
for t in 1 1 1 2 2 3 3 3 4; do
PID="`head -1 "$1" 2>/dev/null`" && [ :"$PID" != : ] && break
sleep $t
done
[ :"$PID" = : ] && die ":ERROR:No or empty PidFile: $1"
info "Started $PIDFILE[$PID]."
}
kill_and_wait () {
PID_FILE="${1:?Missing argument: PidFile}"
if [ -f "$PID_FILE" ]; then
PID="`head -1 "$PID_FILE" 2>/dev/null`"
[ :"$PID" = : ] && \
info "Empty Pid file: $1"
info "Stopping $1 [$PID]..."
shift
case :"${1:?Missing argument: kill command}" in
:kill)
[ :"$PID" = : ] || cmd kill "$PID";;
:*)
cmd "$@";;
esac
wait "$PID"
for t in 1 1 1 2; do
sleep $t
[ -e "$PID_FILE" ] || break
done
silent rm "$PID_FILE"
else
info "No pid file: $1"
fi
}
PRIV_DIR="`pwd`"
DATA_DIR="`dirname "$0"`"
DATA_DIR="`cd "$DATA_DIR" && pwd`"
silent type apache2ctl || \
die ":SKIP: Can not find apache2ctl."
silent type tinyproxy || \
die ":SKIP: Can not find tinyproxy."
[ -d "$APACHE_MODS_AVAILABLE_DIR" ] || \
die ":SKIP:Can not locate modules dir $APACHE_MODS_AVAILABLE_DIR."
silent mkdir apache2 tinyproxy
cd apache2 || \
die ":ERROR:Can not cd to apache2"
CWD="`pwd`"
(cd ../tinyproxy) || \
die ":ERROR:Can not cd to ../tinyproxy"
unset APACHE_HTTPD APACHE_LYNX APACHE_STATUSURL
## apache2ctl envvars variables
APACHE_CONFDIR="$DATA_DIR/apache2"
[ -f "$APACHE_CONFDIR"/apache2.conf ] || \
die ":SKIP:No config file: $APACHE_CONFDIR/apache2.conf."
APACHE_RUN_USER=`id | sed 's/^uid=[0-9]\{1,\}(\([^)]*\)).*/\1/'`
APACHE_RUN_GROUP=`id | sed 's/.*[ ]gid=[0-9]\{1,\}(\([^)]*\)).*/\1/'`
APACHE_RUN_DIR="$CWD/run"
APACHE_PID_FILE="$APACHE_RUN_DIR/pid"
APACHE_LOCK_DIR="$CWD/lock"
APACHE_LOG_DIR="$CWD/log"
export APACHE_CONFDIR APACHE_RUN_USER APACHE_RUN_GROUP
export APACHE_RUN_DIR APACHE_PID_FILE
export APACHE_LOCK_DIR APACHE_LOG_DIR
silent cmd mkdir "$APACHE_CONFDIR"
silent cmd mkdir "$APACHE_RUN_DIR" "$APACHE_LOCK_DIR" "$APACHE_LOG_DIR"
## Our apache2.conf additional variables
APACHE_MODS_DIR="$CWD/mods"
APACHE_DOCROOT="$APACHE_CONFDIR/htdocs"
APACHE_CERTS_DIR="$PRIV_DIR"
export APACHE_MODS_DIR APACHE_DOCROOT APACHE_CERTS_DIR
[ -d "$APACHE_MODS_DIR" ] || {
cmd mkdir "$APACHE_MODS_DIR"
for MOD in $MODS; do
cmd ln -s "$APACHE_MODS_AVAILABLE_DIR/$MOD" "$APACHE_MODS_DIR" || {
die ":ERROR:ln of apache 2 module $MOD failed"
}
done
}
case :"${1:?}" in
:start)
info "Starting apache2..."
cmd apache2ctl start
[ $? = 0 ] || \
die ":ERROR: apache2 did not start."
wait_for_pidfile "$APACHE_PID_FILE"
info "Starting tinyproxy..."
cmd cd ../tinyproxy || \
die ":ERROR:Can not cd to `pwd`/../tinyproxy"
cat >tinyproxy.conf <<EOF
Port $PROXY_PORT
Listen 127.0.0.1
BindSame yes
Timeout 600
DefaultErrorFile "default.html"
Logfile "tinyproxy.log"
PidFile "tinyproxy.pid"
MaxClients 100
MinSpareServers 2
MaxSpareServers 8
StartServers 2
MaxRequestsPerChild 0
ViaProxyName "tinyproxy"
ConnectPort $APACHE_HTTPS_PORT
EOF
(tinyproxy -d -c tinyproxy.conf 1>/dev/null 2>&1 </dev/null &)&
wait_for_pidfile tinyproxy.pid
status ":STARTED:$PROXY_SERVER_NAME:$PROXY_PORT|\
$APACHE_SERVER_NAME:$APACHE_HTTP_PORT:$APACHE_HTTPS_PORT"
exit 0
;;
:stop)
kill_and_wait ../tinyproxy/tinyproxy.pid kill
kill_and_wait "$APACHE_PID_FILE" apache2ctl stop
status ":STOPPED:"
exit 0
;;
:apache2ctl)
shift
cmd apache2ctl ${1+"$@"}
exit
;;
:*)
(exit 1); die ":ERROR: I do not know of command '$1'."
;;
esac
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