hooks/squid-deb-proxy-client

   1 #!/bin/sh
   2 #
   3 # Make the cloned container aware of squid-deb-proxy settings at start.
   4 #
   5 # Copyright ©  2014 Christopher Glass.
   6 #
   7 # This library is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License version 2, as
   9 # published by the Free Software Foundation.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License along
  17 # with this program; if not, write to the Free Software Foundation, Inc.,
  18 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19
  20 # When starting a container, inject the squid-deb-proxy-client proxy
  21 # address in the container's apt configuration.
  22 # This script should be added to templates as a pre-start script, such as:
  23 #lxc.hook.pre-start=/usr/share/lxc/hooks/squid-deb-proxy-client
  24
  25 discovery_script=/usr/share/squid-deb-proxy-client/apt-avahi-discover
  26 proxy_file=/etc/apt/apt.conf.d/50squid-deb-proxy
  27 container_proxy_file=$LXC_ROOTFS_PATH$proxy_file
  28
  29 if [ -f $proxy_file ]; then
  30     # The host has a proxy file - let's propagate the config to the guest.
  31     cat $proxy_file > $container_proxy_file
  32     exit 0
  33 fi
  34
  35 if [ ! -f $discovery_script ]; then
  36     # There is no squid-deb-proxy-client package installed. Do nothing.
  37     exit 0
  38 fi
  39
  40 proxy_line=$($discovery_script)  #XXX: Could be multiline?
  41
  42 if [ -n "$proxy_line" ]; then
  43     doc="# Detected at container start from the host's squid-deb-proxy-client"
  44     echo "Acquire::http::proxy \"$proxy_line\"; $doc" > $container_proxy_file
  45 else
  46     if [ -f $proxy_file ]; then
  47         rm $proxy_file
  48     fi
  49 fi
  50 exit 0