source: debian/i2p.postinst @ b6fab82

#!/bin/sh  -e

I2PHOME=/var/lib/i2p
I2P=/usr/share/i2p
I2PUSER=i2psvc

conffile="/etc/default/i2p"

update_config_file()
{
        db_field=$1
        config_field=$2
  
        RET=false
        db_get $db_field
        if [ -n "$RET" ] ; then
                if grep -q "^$config_field" $conffile ; then 
                        # keep any admin changes, while replacing the variable content
                        sed "s/^[ ]*$config_field=\".*\"/$config_field=\"$RET\"/" < $conffile > $conffile.new &&  
                        mv $conffile.new $conffile
                else
                        echo "$config_field=\"$RET\"" >> $conffile
                fi  
        fi  
}

# Source debconf library -- we have a Depends line
# to make sure it is there...
. /usr/share/debconf/confmodule
db_version 2.0


case "$1" in
        configure|reconfigure)
                if [ -f $conffile ] ; then
                        sed -i -e 's/^[ ]*STARTI2P/RUN_DAEMON/g' $conffile
                        if ! grep -q RUN_DAEMON $conffile ; then
                                cat << EOF >> $conffile
# I2P daemon. If set to true, I2P will start automatically
# when your computer boots.
RUN_DAEMON="false"
EOF
                        fi
                        if ! grep -q I2PUSER $conffile ; then
                                cat << EOF >> $conffile
# The user that runs the I2P daemon. By default this is set to i2psvc.
# You may want to change this to use a manually installed I2P profile.
I2PUSER="i2psvc"
EOF
                        fi
                else
                        cat << EOF >> $conffile
# Defaults for i2p initscript (/etc/init.d/i2p)
# This is a posix shell fragment

# [automatically edited by postinst, do not change line format ]
# Run 'dpkg-reconfigure -plow i2p' to change these values.

# I2P daemon. If set to true, i2p will start automatically when 
# the computer boots
RUN_DAEMON="false"

# The user that runs the I2P daemon. By default this is set to i2psvc.
# You may want to change this to use a manually installed I2P profile.
I2PUSER="i2psvc"
EOF
                fi
        update_config_file i2p/daemon   RUN_DAEMON
        update_config_file i2p/user     I2PUSER

        migrate_existing_user(){
                # Adjust the user/group in /etc/passwd, mainly for upgrades from old packages that didn't
                # create $I2PUSER as a system group/user
                usermod -c "I2P Router Daemon" -m -d $I2PHOME -g $I2PUSER -s "/bin/false" \
                        -l $I2PUSER -e 1 > /dev/null 2>&1
                echo "Existing user migrated, home directory moved to $I2PHOME"
        }

        # Create user and group as a system user.
        adduser --system --quiet --group --home $I2PHOME $I2PUSER || migrate_existing_user

        [ -d /var/log/i2p ] || mkdir -m0750 /var/log/i2p
        chown -f -R $I2PUSER:adm /var/log/i2p

        # Has someone set the permissions with dpkg-statoverride? If so, obey them.
        if ! dpkg-statoverride --list $I2PHOME > /dev/null 2>&1
        then
                chown -f -R $I2PUSER:$I2PUSER $I2PHOME
                chmod -f u=rwx,g=rxs,o= $I2PHOME
        fi

        ##if ! dpkg-statoverride --list $I2P > /dev/null
        ##then
        ##      chown -f -R $I2PUSER:$I2PUSER $I2P
        ##fi  

        db_stop
;;
abort-upgrade|abort-remove|abort-deconfigure)
        echo "Aborting upgrade"
        exit 0
        ;;
*)
        echo "postinst called with unknown argument \`$1'" >&2
                exit 0
                ;;
esac
        
#DEBHELPER#

exit 0