request-tracker4 4.2.12-5 / config

#!/bin/sh

set -e

RTVER=4
RT=request-tracker${RTVER}

write_readconfig_script ()
{
    # this Perl script is embedded here because the .config 
    # will be run before the new version is unpacked, so we
    # can't ship the script in the .deb

    READ_CONFIG_SCRIPT=$(mktemp -t ${RT}-readconfig.XXXXXXXX) || exit 1
    chmod 755 $READ_CONFIG_SCRIPT
    cat > $READ_CONFIG_SCRIPT <<'EOF'
#!/usr/bin/perl -w
use strict;
no strict 'refs';

# This script reads in the current RT configuration
# and outputs shell code that sets corresponding shell 
# variables.
#
# It is used by the maintainer scripts of RT
# to get default values for debconf prompts.
#
# When invoked without any options, the script will output 
# dbconfig-common related variables for use by dbconfig-load-include(1).
#
# When invoked with the '-s' option, the script will output
# the rest of the variables needed used by the maintainer scripts.

# Copyright 2007 Niko Tyni <ntyni@iki.fi>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.  You may also can
# redistribute it and/or modify it under the terms of the Perl
# Artistic License.

use Getopt::Std;

my %opts;
getopts('s', \%opts) or die("Usage: $0 [-s]");
my $dbconfig_mode = not exists $opts{s};

# Note the order; if somebody has overridden RT.pm,
# we should honor that
use lib "/usr/local/share/request-tracker4/lib";
use lib "/usr/share/request-tracker4/lib";

use RT;

# the correspondence between the RT variables and
# their names in the shell
my %site_names = (
    rtname              => "RT_SITE_rtname",
    Organization        => "RT_SITE_organization",
    CorrespondAddress   => "RT_SITE_correspondaddress",
    CommentAddress      => "RT_SITE_commentaddress",
    WebPath             => "RT_SITE_webpath",
    WebBaseURL          => "RT_SITE_webbaseurl",
);

# the special dbconfig-load-include(1) variables
my %db_names = (
    DatabaseType        => "dbc_dbtype",
    DatabaseHost        => "dbc_dbserver",
    DatabaseUser        => "dbc_dbuser",
    DatabasePassword    => "dbc_dbpass",
    DatabaseName        => "dbc_dbname",
    DatabasePort        => "dbc_dbport",
);

# map from dbconfig-common database types to their names as known by RT
my %typemap = reverse (
    mysql   => 'mysql',
    pgsql   => 'Pg',
    sqlite3 => 'SQLite',
);

# Read in the configuration
RT::LoadConfig();

# and output the relevant parts of it
if ($dbconfig_mode) {
    for my $var (keys %db_names) {
        my $val = ${"RT::$var"} || "";
        my $varname = $db_names{$var};
        $val = $typemap{$val} || "" if $varname eq "dbc_dbtype";
        print qq($varname="$val"\n);
    }
} else {
    for my $var (sort keys %site_names) {
        my $val = ${"RT::$var"} || "EMPTY_PLACEHOLDER_VALUE";
        my $varname = $site_names{$var};
        print qq($varname="$val"\n);
    }
}

EOF
# end of the embedded Perl script
} # write_readconfig_script()

# start of the actual command flow

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

db_version 2.0
db_capb backup

hostname="$(hostname -f || true)"
hostname="${hostname:-$(hostname)}"

# sane startup defaults
RT_SITE_DEFAULT_webpath=/rt
RT_SITE_DEFAULT_webbaseurl=http://${hostname}
RT_SITE_DEFAULT_rtname=rt.${hostname}
RT_SITE_DEFAULT_organization=${hostname}
RT_SITE_DEFAULT_correspondaddress="rt@${hostname}"

# we always create this to be on the safe side
# from now on, $READ_CONFIG_SCRIPT is set
write_readconfig_script

# is this an old installation?
if [ -e /etc/${RT}/RT_SiteConfig.pm ]
then
    if [ "$1" = "configure" ] && [ ! -f /usr/share/${RT}/lib/RT.pm ]
    then
        # it's an old installation, but not unpacked, ie. it was removed
        # but not purged in the meantime
        # the only sane thing to do is to exit now and retry when we're
        # re-run from the postinst script
        echo "${RT}.config: cannot read the old configuration file yet, postponing configuration." 1>&2
        rm $READ_CONFIG_SCRIPT
        exit 0
    fi
    if [ ! -x "$READ_CONFIG_SCRIPT" ] 
    then
        echo "Creating temporary script for loading old configuration failed." 1>&2
        exit 1
    fi

    # read in the existing configuration for default values
    eval $($READ_CONFIG_SCRIPT -s)

    # are we expected to handle the configuration file permissions?

    # if this is an old installation but the permissions aren't what
    # we expect, we don't want to handle them 
    if [ "root:www-data" != \
          $(stat -c %U:%G /etc/${RT}/RT_SiteConfig.pm) ] \
    || [ "640" != \
          $(stat -c %a    /etc/${RT}/RT_SiteConfig.pm) ] 
    then
        db_set ${RT}/handle-siteconfig-permissions false
    fi
fi

# now, default to handling the configuration file permissions
db_get ${RT}/handle-siteconfig-permissions
if [ -z "$RET" ]
then
    db_set ${RT}/handle-siteconfig-permissions true
fi

# override the debconf database with the existing configuration
for i in rtname organization webpath webbaseurl \
         correspondaddress commentaddress
do
    unset value default
    eval value=\"$(echo \${RT_SITE_$i})\"
    eval default=\"$(echo \${RT_SITE_DEFAULT_$i})\"
    if [ -n "$value" ]; then
        if [ "$value" = "EMPTY_PLACEHOLDER_VALUE" ]; then
            value="";
        fi;
        db_set ${RT}/$i "${value}"
        # as the value was set in the configuration file, 
        # mark the question as seen
        db_fset ${RT}/$i seen true
    else
        db_get ${RT}/$i
        if [ -z "$RET" ]; then
            db_set ${RT}/$i "${default}"
        fi
    fi
done

# ask the questions
STATE=1
set +e
while true
do
    case "$STATE" in
    1)
        db_input high ${RT}/rtname
        ;;
    2)
        db_input medium ${RT}/organization
        ;;
    3)
        db_input high ${RT}/handle-siteconfig-permissions
        ;;
    4)
        # This should possibly be in -apache2
        db_input medium ${RT}/webbaseurl
        ;;
    5)
        # This should possibly be in -apache2
        db_input medium ${RT}/webpath
        ;;
    6)
        # This should possibly be in -clients
        db_input medium ${RT}/correspondaddress
        ;;
    7)
        db_get ${RT}/commentaddress
        if [ -z "$RET" ]
        then
            # default to the correspond address with -comment appended
            db_get ${RT}/correspondaddress
            ADDRESS="$(echo "$RET" | sed s/@/-comment@/)"
            db_set ${RT}/commentaddress "$ADDRESS"
        fi
        db_input medium ${RT}/commentaddress
        ;;
    8)
        db_input medium ${RT}/install-cronjobs
        ;;
    *)
        break # exit the 'while' loop
        ;;
    esac
    if db_go
    then
        STATE=$(($STATE + 1))
    else
        STATE=$(($STATE - 1))
    fi
done
if [ $STATE -eq 0 ]
then
    # user backed up from the first question
    # leave the package unconfigured
    exit 10
fi
set -e

# source dbconfig-common library
if [ -f /usr/share/dbconfig-common/dpkg/config ]; then
    # supported database types

    # we only take the installed -db-* packages into
    # account on new installs or upgrades from an unconfigured state
    
    if [ -z "$2" ]
    then
        dbc_dbtypes=""
        for dbtype in sqlite3 pgsql mysql
        do
            case "$dbtype" in
            mysql)
                pkg=rt${RTVER}-db-mysql
                ;;
            pgsql)
                pkg=rt${RTVER}-db-postgresql
                ;;
            sqlite3)
                pkg=rt${RTVER}-db-sqlite
                ;;
            esac
            if dpkg-query -W -f='${Status}\n' $pkg 2>/dev/null | \
               grep -q '^install \| installed$' || \
               ( db_get ${pkg}/available && [ "$RET" = "true" ] ); then
                dbc_dbtypes="${dbc_dbtypes}, $dbtype"
            fi
            dbc_dbtypes=$(echo $dbc_dbtypes | sed 's/^, //')
        done
    else
        dbc_dbtypes="sqlite3, pgsql, mysql"
    fi
    if [ -z "$dbc_dbtypes" ]
    then
        # no -db-* packages preconfigured yet
        #
        # either apt feeds the list to dpkg-preconfigure in the
        # wrong order (unlikely), or dpkg-preconfigure was called
        # manually
        #
        # in either case, the only sane thing to do is to exit now and
        # retry when we're re-run from the postinst script
        echo "${RT}.config: no rt${RTVER}-db-* package is being installed? postponing configuration." 1>&2
        rm $READ_CONFIG_SCRIPT
        exit 0
    fi

    # we want a password that can be put in the configuration file
	dbc_authmethod_user="password"

    # some default values
    dbc_dbuser="rtuser"
    dbc_dbname="rtdb"

    # this makes dbconfig-common import an existing configuration when
    # upgrading from a pre-dbconfig-common version
    #
    # note that we're calling the same script as the general upgrade logic
    # above, but without the '-s' argument, so that the script will
    # return the database related configuration
	dbc_load_include=exec:$READ_CONFIG_SCRIPT

    # all ready, let's go
	. /usr/share/dbconfig-common/dpkg/config
	dbc_go ${RT} $@

    db_get ${RT}/dbconfig-install
    DBC_INSTALL=$RET
    if [ -n "$2" ]; then
        DBC_INSTALL="false"
    fi
    db_get ${RT}/dbconfig-reinstall
    DBC_REINSTALL=$RET
    if [ "$DBC_INSTALL" = "true" -o "$DBC_REINSTALL" = "true" ]; then
        while true; do
            if db_input high ${RT}/initial-root-password; then
                db_go
            else
                if [ $? -eq 30 ]; then
                    break
                else
                    exit $?
                fi
            fi
            db_get ${RT}/initial-root-password
            if [ -n "$RET" ]; then
                PW_LENGTH=$(expr length "$RET")
                # This is only the default $MinimumPasswordLength which could
                # in theory be overridden by the user by this point, but we'll
                # ignore this edge case for now; it'll be trapped later.
                # Let's just say that we don't support passwords shorter than
                # this
                if [ "$PW_LENGTH" -ge 5 ]; then
                    break
                fi
            fi
        done
    fi
fi
 
rm $READ_CONFIG_SCRIPT