#!/bin/sh

set -e

# Source debconf library.
. /usr/share/debconf/confmodule

CONFIGFILE="/etc/alternc/local.sh"

update_var() {
    local question
    local var
    question="$1"
    var="$2"
    db_get "$question"
    if [ ! -z "$RET" ]; then
        grep -Eq "^ *$var=" $CONFIGFILE || echo "$var=" >> $CONFIGFILE
        SED_SCRIPT="$SED_SCRIPT;s\\^ *$var=.*\\$var=\"$RET\"\\"
    fi
}

# summary of how this script can be called:
#        * <postinst> `configure' <most-recently-configured-version>
#        * <old-postinst> `abort-upgrade' <new version>
#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
#          <new-version>
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package
#
# quoting from the policy:
#     Any necessary prompting should almost always be confined to the
#     post-installation script, and should be protected with a conditional
#     so that unnecessary prompting doesn't happen if a package's
#     installation fails and the `postinst' is called with `abort-upgrade',
#     `abort-remove' or `abort-deconfigure'.

case "$1" in
  configure)

    # Create AlternC Panel user for web server
    if ! getent group alterncpanel; then
        addgroup --system --gid 1999 alterncpanel
    fi
    if ! getent passwd alterncpanel; then
        adduser --system --home "/etc/alternc/.alterncpanel" \
            --disabled-password --uid 1999 --ingroup alterncpanel alterncpanel
    fi

    # ajoute l'user postfix au groupe sasl
    adduser --quiet postfix sasl

    # corriger les permissions du chroot
    mkdir -p /var/spool/postfix/var/run/saslauthd || true
    dpkg-statoverride --quiet --update --add root sasl 710 /var/spool/postfix/var/run/saslauthd  || true

    # build local.sh if it does not exist
    if [ ! -f $CONFIGFILE ]; then
        cat > $CONFIGFILE <<EOF
#!/bin/sh
#
# AlternC - Web Hosting System - Configuration
# This file will be modified on package configuration
# (e.g. upgrade or dpkg-reconfigure alternc)

# Hosting service name
HOSTING=""

# Primary hostname for this box (will be used to access the management panel)
FQDN=""

# Public IP
PUBLIC_IP=""

# Internal IP
# (most of the time, should be equal to PUBLIC_IP, unless you are behind
# firewall doing address translation)
INTERNAL_IP=""

# Monitoring IP or network (will be allowed to access Apache status)
MONITOR_IP=""

# Primary DNS hostname
NS1_HOSTNAME=""

# Secondary DNS hostname
NS2_HOSTNAME=""

# Mail server hostname
DEFAULT_MX=""

# Note: MySQL username/password configuration now stored in /etc/alternc/my.cnf

# quels clients mysql sont permis (%, localhost, etc)
MYSQL_CLIENT=""

# Folder holding data (used for quota management)
ALTERNC_LOC=""

# the type of backup created by the sql backup script
# valid options are "rotate" (newsyslog-style) or "date" (suffix is the date)
SQLBACKUP_TYPE=""

# overwrite existing files when backing up
SQLBACKUP_OVERWRITE=""
EOF

        chown root:www-data $CONFIGFILE
        chmod 640 $CONFIGFILE
    fi

    # Update local.sh
    # 1. use cp to keep permissions
    # 2. add missing variable to local.sh
    # 3. use sed to set variables with current values
    echo "Updating $CONFIGFILE"
    cp -a -f $CONFIGFILE $CONFIGFILE.tmp
    # SED_SCRIPT will be modified by update_var
    SED_SCRIPT=""
    update_var alternc-slave/hostingname HOSTING
    update_var alternc-slave/desktopname FQDN 
    update_var alternc-slave/public_ip PUBLIC_IP
    update_var alternc-slave/internal_ip INTERNAL_IP
    update_var alternc-slave/monitor_ip MONITOR_IP
    update_var alternc-slave/ns1 NS1_HOSTNAME
    update_var alternc-slave/ns2 NS2_HOSTNAME
    update_var alternc-slave/default_mx DEFAULT_MX 
    update_var alternc-slave/mysql/client MYSQL_CLIENT 
    update_var alternc-slave/sql/backup_type SQLBACKUP_TYPE
    update_var alternc-slave/sql/backup_overwrite SQLBACKUP_OVERWRITE
    update_var alternc-slave/alternc_location ALTERNC_LOC
    sed -e "$SED_SCRIPT" < $CONFIGFILE > $CONFIGFILE.tmp
    mv -f $CONFIGFILE.tmp $CONFIGFILE

    if [ -e $CONFIGFILE ]; then
      # source local.sh variables
      . $CONFIGFILE
    fi

    if grep -q alternc-mergelog /etc/passwd ; then
        echo "Reusing the alternc-mergelog account as a generic alternc account"
        # the uid is ugly. we should request allocation from
        # base-passwd instead
        usermod --uid 342 --shell /bin/rbash --login alternc alternc-mergelog
        # this is a separate step otherwise usermod will look for
        # files to chown in /var/alternc, which takes a long time
        usermod --home $ALTERNC_LOC alternc
    fi
    if [ -d /var/run/alternc-mergelog/.ssh ]; then
        echo "Cleaning up old alternc-mergelog home"
        mv /var/run/alternc-mergelog/.ssh $ALTERNC_LOC/.ssh && rmdir /var/run/alternc-mergelog
    fi
    if ! grep -q alternc /etc/passwd ; then
        echo "Creating alternc account"
        # this uid is ugly. we should request allocation from
        # base-password instead
        adduser --quiet --system --uid 342 --home $ALTERNC_LOC --shell /bin/rbash --ingroup adm alternc
    fi

    echo "config phpmyadmin"
    include_str='include("/etc/alternc/phpmyadmin.inc.php")'
    pma_config=/etc/phpmyadmin/config.inc.php
    if ! grep -e "$include_str" $pma_config > /dev/null 2>&1; then
        echo "<?php $include_str ?>" >> $pma_config
    fi

    if ! grep -q '## ALTERNC START' /etc/sudoers; then
        # XXX: this is not proper locking
        if [ -e /etc/sudoers.tmp ]; then
            echo "sudoers file being edited, aborting"
            exit 1
        else
            cp /etc/sudoers /etc/sudoers.tmp
            cat >> /etc/sudoers.tmp <<EOF
## ALTERNC START
## do not change anything between those lines
alternc ALL=NOPASSWD: /usr/sbin/invoke-rc.d apache reload
alternc ALL=NOPASSWD: /usr/sbin/invoke-rc.d apache2 reload
alternc ALL=NOPASSWD: /usr/sbin/rndc reload *
alternc ALL=NOPASSWD: /usr/sbin/rndc reload
## ALTERNC END
EOF
            mv /etc/sudoers.tmp /etc/sudoers
        fi
    fi

    # important: postinst gele sans ca
    db_stop

    echo "running alternc.install"
    alternc.install -s
    ;;

    abort-upgrade|abort-remove|abort-deconfigure)

    ;;

    *)
        echo "postinst called with unknown argument \`$1'" >&2
        exit 1
    ;;

esac

# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.

#DEBHELPER#

exit 0

# vim: et sw=4