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c95784dc Ondřej Fibich
#!/bin/bash
# FreenetIS-dhcp DEB: actions after installing of package

set -e
. /usr/share/debconf/confmodule

NAME=freenetis-dhcp
CONFIGFILE=/etc/freenetis/freenetis-dhcp.conf

# Quit if config file is missing.
if [ ! -e $CONFIGFILE ]; then
echo "$CONFIGFILE not founded!"
exit 1
fi

. $CONFIGFILE

url_regex='(https?|ftp|file)://[-A-Za-z0-9\+&@#/%?=~_|!:,.;]*[-A-Za-z0-9\+&@#/%=~_|]'

# Substitute in the values from the debconf db.
# There are obvious optimizations possible here.
# The cp before the sed ensures we do not mess up
# the config file’s ownership and permissions.

db_get freenetis-dhcp/path_freenetis
PATH_FN="$RET"

db_get freenetis-dhcp/device_id
DEVICE_ID="$RET"

db_get freenetis-dhcp/timeout
TIMEOUT="$RET"

# check path
if [ -z "$PATH_FN" ]; then
echo "Empty path to FreenetIS instance, configuration failed!"
exit 3
fi

# check path format
if [[ ! "$PATH_FN" =~ $url_regex ]]; then
echo "Wrong format of the path to FreenetIS instance, configuration failed!"
exit 3
fi

# check device ID
if [[ ! "$DEVICE_ID" =~ ^[0-9]+$ ]] || [ $DEVICE_ID -lt 1 ]; then
echo "Wrong configuration (ID not set properly), configuration failed!" 1>&2
exit 1
fi

# check timeout ID
if [[ ! "$TIMEOUT" =~ ^[0-9]+$ ]] || [ $TIMEOUT -lt 1 ]; then
echo "Wrong configuration (TIMEOUT not set properly), configuration failed!" 1>&2
exit 1
fi

cp -a -f $CONFIGFILE $CONFIGFILE.tmp

# If the admin deleted or commented some variables but then set
# them via debconf, (re-)add them to the conffile.

test -z "$PATH_FN" || grep -Eq '^ *PATH_FN=' $CONFIGFILE || echo "PATH_FN=" >> $CONFIGFILE
test -z "$DEVICE_ID" || grep -Eq '^ *DEVICE_ID=' $CONFIGFILE || echo "DEVICE_ID=" >> $CONFIGFILE
test -z "$TIMEOUT" || grep -Eq '^ *TIMEOUT=' $CONFIGFILE || echo "TIMEOUT=" >> $CONFIGFILE

PATH_FN_ESCAPED="${PATH_FN//\//\\/}"
DEVICE_ID_ESCAPED="${DEVICE_ID//\//\\/}"
TIMEOUT_ESCAPED="${TIMEOUT//\//\\/}"

sed -e "s/^ *PATH_FN=.*/PATH_FN=\"$PATH_FN_ESCAPED\"/" \
-e "s/^ *DEVICE_ID=.*/DEVICE_ID=\"$DEVICE_ID_ESCAPED\"/" \
-e "s/^ *TIMEOUT=.*/TIMEOUT=\"$TIMEOUT_ESCAPED\"/" < $CONFIGFILE > $CONFIGFILE.tmp

mv -f $CONFIGFILE.tmp $CONFIGFILE

# Make post install things

# 1) Startup at boot

# set on fire after boot
update-rc.d freenetis-dhcp defaults

exit 0