#!/bin/sh
# postinst script for phpbb3
# By Jeroen van Wolffelaar <jeroen@wolffelaar.nl> and J.M. Roth <jmroth@iip.lu>
#
# possible calls: configure, abort-upgrade, abort-remove, abort-deconfigure

set -e

if [ "$PB3DEBUG" = "maint" ]; then
  echo "[maint] $0 $@" >&2
  dbc_debug=true
fi
if [ "$PB3DEBUG" = "sh" ]; then
  set -x
fi

randminmax () {
    local min=$1
    local max=$2
    local var=0
    while ([ "$var" -le $min ] || [ "$var" -ge $max ]); do
        var=$(dd if=/dev/urandom count=1 2>/dev/null | cksum | cut -c1-2)
    done
    echo $var
}


if [ "$1" = "configure" ]; then

    ## libraries
    . /usr/share/phpbb3/maint-libs/webapps-config
    . /usr/share/phpbb3/maint-libs/dbapps-lib

    . /usr/share/debconf/confmodule # calls phpbb3.config
    . /usr/share/dbconfig-common/dpkg/postinst
    db_version 2.0

# have to do this here since we cannot convert from a directory
# to a link by simple means between versions
    ln -fs /var/lib/phpbb3/images /usr/share/phpbb3/www/

## set random background for captcha (J.M.Roth 2010)
    RANDX=$(randminmax 10 25)
    RANDY=$(randminmax 5 25)
    DBCCP=/usr/share/dbconfig-common/data/phpbb3
    cp -a /usr/share/phpbb3/dbconfig-common/data/phpbb3 /usr/share/dbconfig-common/data/
    for i in mysql pgsql sqlite; do
        sed -i "s/@DEB_CAPTCHA_X_RAND@/${RANDX}/" $DBCCP/install/$i
        sed -i "s/@DEB_CAPTCHA_Y_RAND@/${RANDY}/" $DBCCP/install/$i
    done

    UCF=ucf

## DATABASE SETUP
    dbc_generate_include="php:/etc/phpbb3/database.inc.php"
    dbc_generate_include_owner="root:www-data"
    dbc_generate_include_perms="0640"
# for sqlite: make sure that the database is readable for the webserver
    dbc_dbfile_owner="root:www-data"
    dbc_dbfile_perms="0660"

dc_dbg

    if ! dbc_go phpbb3 $@ ; then
        echo 'Automatic configuration using dbconfig-common failed!'
    else
        postgres_update_seqs
# act on the provided admin password
        if dc_true phpbb3/dbconfig-install ; then
            pass=$(dc_get phpbb3/admin-pass)
            if [ -n "$pass" ] ; then
                echo "Setting admin password" >&2
                run_sql "UPDATE phpbb_users SET user_password='$(_md5 $pass)' WHERE username='admin';"
                if [ "$ERR" != "fail" ] && [ "${DEBIAN_FRONTEND}" = "noninteractive" ]; then
                    echo "Admin password set to $pass" >&2
                fi
            fi
            dc_forget phpbb3/admin-pass
            dc_forget phpbb3/admin-pass-confirm
        fi
    fi

dc_dbg

# /etc/apache2/conf.d/phpbb3.conf symlink moved to /etc/apache2/conf-available
    if dpkg --compare-versions "$2" lt-nl "3.0.11-5"; then
        [ -L /etc/apache2/conf.d/phpbb3.conf ] && rm /etc/apache2/conf.d/phpbb3.conf
    fi

## WEBSERVER SETUP
# initially inspired from phpmyadmin's postinst
    webservers=$(dc_get phpbb3/httpd)
    reload=""

    # determine inexistant, removed, added and non-changed webservers
    webservers_old_tmp=$(dc_get phpbb3/httpd-old)
    db_reset phpbb3/httpd-old
    db_unregister phpbb3/httpd-old
    # remove servers from list that don't exist anymore anyhow
    # db_reset in phpbb3.config should have sufficed
    #webservers_old=""
    #for ow in $webservers_old_tmp; do
    #    ow=${ow%,}
    #    for aw in $AVAILABLE_WEBSERVERS; do
    #        aw=${aw%,}
    #        if [ "$ow" = "$aw" ] ; then
    #            webservers_old="$webservers_old $ow"
    #            break
    #        fi
    #    done
    #done
    # find removed servers (elements from old list not in new list)
    for ow in $webservers_old_tmp; do
        ow=${ow%,}
        for w in $webservers; do
            w=${w%,}
            [ "$ow" = "$w" ] && continue 2
        done
        reload="$reload $ow"
    done
    # find added servers (elements from new list not in old list)
    for w in $webservers; do
        w=${w%,}
        for ow in $webservers_old_tmp; do
            ow=${ow%,}
            [ "$ow" = "$w" ] && continue 2
        done
        reload="$reload $w"
    done
    # if we're all but reconfigured,
    # everything that is selected has to be reloaded anyhow
    if [ -z "$DEBCONF_RECONFIGURE" ] ; then
        for webserver in $webservers; do
            webserver=${webserver%,}
            reload="$reload $webserver"
        done
    fi

    ## to correctly account for the case in which
    ## webservers have been chosen to be NO LONGER configured
    ## (e.g. via dpkg-reconfigure)
    # first, remove all symlinks
    purge_webserver_config phpbb3 all 50
    # then restore all selected configs
    for webserver in $webservers; do
        webserver=${webserver%,}
        test -x /usr/sbin/$webserver || continue
        $UCF --debconf-ok --three-way /usr/share/phpbb3/webserver-examples/$webserver.conf /etc/phpbb3/$webserver.conf
        ucfr phpbb3 /etc/phpbb3/$webserver.conf
        install_webserver_config phpbb3 $webserver 50
    done
    # finally reload the changed servers
    for r in $reload; do
        reload_webserver phpbb3 $r
    done

    if [ ! -h /usr/share/phpbb3/www/install-* ]; then
	ln -s /usr/share/phpbb3/install /usr/share/phpbb3/www/install-$(</dev/urandom tr -dc A-NP-Za-km-z0-9 | head -c 10)
    fi

# set permissions that are appropriate for multisite too
    chgrp www-data /var/lib/phpbb3/images/avatars/upload
    chmod g=wx,o= /var/lib/phpbb3/images/avatars/upload
    chmod 0755 /var/lib/phpbb3/images/ranks
    chgrp -R www-data /var/cache/phpbb3/cache
    for i in $(find /var/cache/phpbb3/cache -type d); do
	chmod g=rwx,o= $i
    done
    chgrp www-data /var/lib/phpbb3/files
    chmod g=wx,o= /var/lib/phpbb3/files
    chgrp www-data /var/lib/phpbb3/store
    chmod g=wx,o= /var/lib/phpbb3/store
fi

# Replace example directory with symlink
# cannot be dropped before Jessie gets released
docdir="/usr/share/doc/phpbb3/examples"
if [ -d $docdir ] && [ ! -L $docdir ]; then
    if rmdir $docdir 2>/dev/null; then
        ln -sf ../../phpbb3/webserver-examples $docdir
    fi
fi

#DEBHELPER#