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|
#!/bin/bash
set -e
. /usr/share/debconf/confmodule
# This is taken from the package libnss-mdns and edited to do the same thing
# but for GNS insteand of mdns. try to insert gns entries to the "hosts" line
# in /etc/nsswitch.conf to automatically enable nss-gns support; do not change
# the configuration if the "hosts" line already references some gns lookups
insert_gns() {
echo -n "Checking NSS setup..."
# abort if /etc/nsswitch.conf does not exist
if ! [ -e /etc/nsswitch.conf ]; then
echo "Could not find /etc/nsswitch.conf."
return 1
fi
perl -i -pe '
sub insert {
# this also splits on tab
my @bits=split(" ", shift);
# do not break configuration if the "hosts" line already references gns
if (grep { $_ eq "gns"} @bits) {
return join " ", @bits;
}
# change "dns" or "resolve", whichever comes first, into
# "gns [NOTFOUND=return] dns"
foreach my $bit (@bits) {
if ($bit eq "dns") {
$bit = "gns [NOTFOUND=return] $bit";
last;
}
}
return join " ", @bits;
}
s/^(hosts:\s+)(.*)/$1.insert($2)/e;
' /etc/nsswitch.conf
echo " done."
}
case "${1}" in
configure)
db_version 2.0
db_get gnunet-systempeer/username
_USERNAME="${RET:-gnunet}"
db_get gnunet-systempeer/groupname
_GROUPNAME="${RET:-gnunet}"
db_get gnunet-systempeer/autostart
_AUTOSTART="${RET}" # boolean
db_get gnunet-dns/libnsswitch
_LIBNSSWITCH="${RET}" # boolean
db_get gnunet-user/proxy
_PROXY="${RET}" # boolean
db_stop
CONFIG_FILE="/etc/default/gnunet"
# Read default values
GNUNET_HOME="/var/lib/gnunet"
eval $(grep GNUNET_HOME /etc/gnunet.conf | tr -d '[:blank:]')
# Creating gnunet group if needed
if ! getent group ${_GROUPNAME} > /dev/null
then
echo -n "Creating new GNUnet group ${_GROUPNAME}:"
addgroup --quiet --system ${_GROUPNAME}
echo " done."
fi
# Creating gnunet user if needed
if ! getent passwd ${_USERNAME} > /dev/null
then
echo -n "Creating new GNUnet user ${_USERNAME}:"
adduser --quiet --system --ingroup ${_GROUPNAME} --home ${GNUNET_HOME} ${_USERNAME}
echo " done."
fi
# Add a special secured group
GNUNETDNS_GROUP="gnunetdns"
# Creating gnunetdns group if needed
if ! getent group ${GNUNETDNS_GROUP} > /dev/null
then
echo -n "Creating new secured GNUnet group ${GNUNETDNS_GROUP}:"
addgroup --quiet --system ${GNUNETDNS_GROUP}
echo " done."
fi
# Copy the libnss_gns files to the libnss directory
if ${_LIBNSSWITCH}
then
echo "Editing /etc/nsswitch.conf to use GNS before DNS"
# $2 equals the currently installed version if it exists
if [ -z "$2" ]; then
# first install: setup the recommended configuration (unless
# nsswitch.conf already contains mdns entries)
insert_gns
if [ "$?" -gt 0 ]; then
echo "nsswitch does not exist on this system"
fi
fi
echo " done."
fi
# # Change the proxy settings for Firefox and Chromium if desired
# if ${_PROXY}
# then
# mkdir -p /etc/X11/xinit/xinitrc.d/
#cat > "/etc/X11/xinit/xinitrc.d/80-gnunet-user-services" << "EOF"
##!/bin/bash
#systemctl --user daemon-reload
#systemctl --user start gnunet-user
#systemctl --user enable gnunet-user
#user=$(whoami)
#gnunet_proxy=$(gnunet-config -c /etc/skel/.config/gnunet.conf -s gns-proxy | grep 'IMMEDIATE_START = YES')
#
## Enable GNS proxy for new users informed by /etc/skel.
#if [ "$gnunet_proxy" ]; then
#
# # Calculate user specific port
# port=$((8000+$(id -u $user)))
#
# gnunet-config -c $HOME/.config/gnunet.conf \
# --section=gns-proxy \
# --option=OPTIONS \
# --value="-p $port"
#
# # Firefox
# defaultprofile=$(ls $HOME/.mozilla/firefox/*.default)
# if [ ! "$defaultprofile" ];then
# timeout 3s firefox --headless # dirty: create profile if not existent
# fi
# for ffprofile in $HOME/.mozilla/firefox/*.*/; do
# js=$ffprofile/user.js
# if [ -f "$js" ]; then
# sed -i '/Preferences for using the GNU Name System/d' "$js"
# sed -i '/network.proxy.socks/d' "$js"
# sed -i '/network.proxy.socks_port/d' "$js"
# sed -i '/network.proxy.socks_remote_dns/d' "$js"
# sed -i '/network.proxy.type/d' "$js"
# fi
# echo "// Preferences for using the GNU Name System" >> "$js"
# echo "user_pref(\"network.proxy.socks\", \"localhost\");" >> "$js"
# echo "user_pref(\"network.proxy.socks_port\", $port);" >> "$js"
# echo "user_pref(\"network.proxy.socks_remote_dns\", true);" >> "$js"
# echo "user_pref(\"network.proxy.type\", 1);" >> "$js"
# done
#
# # Chromium
# profile="$HOME/.profile"
# if [ -f "$profile" ]; then
# sed -i '/CHROMIUM_USER_FLAGS/d' "$profile"
# fi
# echo "export CHROMIUM_USER_FLAGS=--proxy-server=socks5://localhost:$port" \
# >> "$profile"
#fi
#
## Create/Renew GNS certificate authority (CA) per user.
#gnunet-gns-proxy-setup-ca
#EOF
# fi
# Update files and directories permissions.
# Assuming default values, this *should* not be changed.
echo -n "Updating files and directories permissions:"
chown -R ${_USERNAME}:${_GROUPNAME} /var/log/gnunetd
chown -R ${_USERNAME}:${_GROUPNAME} ${GNUNET_HOME}
# Secure access to the data directory
chmod 0700 "${GNUNET_HOME}" || true
# Restrict access on setuid binaries
for file in /usr/bin/gnunet-helper-exit \
/usr/bin/gnunet-helper-nat-client \
/usr/bin/gnunet-helper-nat-server \
/usr/bin/gnunet-helper-transport-bluetooth \
/usr/bin/gnunet-helper-transport-wlan \
/usr/bin/gnunet-helper-vpn
do
# only do something when no setting exists
if ! dpkg-statoverride --list $file >/dev/null 2>&1 && [ -e $file ]
then
chown root:${_GROUPNAME} $file
chmod 4750 $file
fi
done
if ! dpkg-statoverride --list /usr/bin/gnunet-helper-dns >/dev/null 2>&1 \
&& [ -e /usr/bin/gnunet-helper-dns ]
then
chown root:${GNUNETDNS_GROUP} /usr/bin/gnunet-helper-dns
chmod 4750 /usr/bin/gnunet-helper-dns
fi
if ! dpkg-statoverride --list /usr/bin/gnunet-service-dns >/dev/null 2>&1 \
&& [ -e /usr/bin/gnunet-service-dns ]
then
chown ${_USERNAME}:${GNUNETDNS_GROUP} /usr/bin/gnunet-service-dns
chmod 2750 /usr/bin/gnunet-service-dns
fi
echo " done."
# Writing new values to configuration file
echo -n "Writing new configuration file:"
CONFIG_NEW=$(tempfile)
cat > "${CONFIG_NEW}" <<EOF
# This file controls the behaviour of the GNUnet init script.
# It will be parsed as a shell script.
# please do not edit by hand, use 'dpkg-reconfigure gnunet-systempeer'.
GNUNET_USER=${_USERNAME}
GNUNET_GROUP=${_GROUPNAME}
GNUNET_AUTOSTART="${_AUTOSTART}"
EOF
cp -f "${CONFIG_NEW}" "${CONFIG_FILE}"
echo " done."
# Cleaning
rm -f "${CONFIG_NEW}"
echo "All done."
;;
abort-upgrade|abort-remove|abort-deconfigure)
;;
*)
echo "postinst called with unknown argument \`${1}'" >&2
exit 1
;;
esac
#DEBHELPER#
exit 0
|
