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#
# Common functions, used from dpkg scripts
#

genRandomPassword()
{
    cat /dev/urandom | tr -dc _A-Z-a-z-0-9 | head -c33
}

readOrCreatePasswords()
{
    BACULAPWFILE=/etc/bacula/common_default_passwords
    if [ -f $BACULAPWFILE ]; then
        . $BACULAPWFILE
    fi

if [ -z "$DIRPASSWD" -o -z "$DIRMPASSWD" -o -z "$SDPASSWD" -o \
         -z "$SDMPASSWD" -o -z "$FDPASSWD" -o -z "$FDMPASSWD" ] ; then
        # Create the passwords.
        DIRPASSWD=`genRandomPassword`
        DIRMPASSWD=`genRandomPassword`
        SDPASSWD=`genRandomPassword`
        SDMPASSWD=`genRandomPassword`
        FDPASSWD=`genRandomPassword`
        FDMPASSWD=`genRandomPassword`

# Save the passwords.
        echo "# " > $BACULAPWFILE
        chown root:root $BACULAPWFILE
        chmod 0600 $BACULAPWFILE
        cat >>$BACULAPWFILE <<EOF
# This file holds defaults for new Bacula packages installed on this system.
# It is used only when you install a new Bacula package, and can be
# safely removed at any time.

DIRPASSWD=$DIRPASSWD
DIRMPASSWD=$DIRMPASSWD
SDPASSWD=$SDPASSWD
SDMPASSWD=$SDMPASSWD
FDPASSWD=$FDPASSWD
FDMPASSWD=$FDMPASSWD
EOF
    fi
}

#
# Function for substitute variables into template
# Usage: substitute <template> <output>
#
# will replace all occurance of XXX_var_XXX to value of environment variable `var'
#

substitute() {
  local TEMPLATE DEST HOSTNAME SUBST_VARIABLES SEDCMD
  TEMPLATE="$1"
  DEST="$2"

HOSTNAME="${HOSTNAME:-`hostname --fqdn 2>/dev/null || hostname`}"

SUBST_VARIABLES="${SUBST_VARIABLES:-HOSTNAME DBNAME DBUSER DBPASS \
    DIRPASSWD DIRMPASSWD SDPASSWD SDMPASSWD FDPASSWD FDMPASSWD}"

SEDCMD="sed"
  for var in $SUBST_VARIABLES; do
    value=$(eval echo "\$$var" |sed -e 's/[\/&]/\\&/g')
    SEDCMD="$SEDCMD -e s/XXX_${var}_XXX/$value/g"
  done

$SEDCMD "$TEMPLATE" >"$DEST"
}

#
# Function for check if config already registered by the same package for 
# other database type.
# Usage: config_from_other_dbtype <package> <config>
#

config_from_other_dbtype() {
  local PACKAGE CONFIG base_package_name regex
  PACKAGE="$1"
  CONFIG="$2"

ucfq -w "$CONFIG" |egrep -q "$regex"
}

#
# Function for install config file from template
# Usage: install_config <package> <config name> [ <template> ]
#
# use substitute() for generate config
# use config_from_other_dbtype() for force reregister file with ucf
# install and register generated file with ucf
#

install_config() {
  local PACKAGE CONFIG OLD_VERSION TEMPLATEa tempfile
  PACKAGE="$1"
  if [ $# -ge 3 ]; then
    TEMPLATE="$2"
    CONFIG="$3"
  else
    TEMPLATE="/usr/share/bacula-common/defconfig/$(basename '$CONFIG')"
    CONFIG="$3"
  fi
  tempfile=`tempfile`

dpkg_conffile_md5sum="$(dpkg-query -W -f='${Conffiles}' \"$PACKAGE\" \
    2>/dev/null |sed -ne "\' $CONFIG ' { s/ obsolete$//; s/.* //; p }")"

if [ -n "$dpkg_conffile_md5sum" ]; then
    echo "$dpkg_conffile_md5sum default" >"$tempfile.md5sum"
  fi

if [ -f "$TEMPLATE.md5sum" ]; then
    cat "$TEMPLATE.md5sum" >>"$tempfile.md5sum"
  fi

substitute "$TEMPLATE" "$tempfile"
  ucf --debconf-ok --three-way "$tempfile" "$CONFIG"

# if config installed by the same package for other
  # database type, we need force reregister it.
  if config_from_other_dbtype "$PACKAGE" "$CONFIG"; then
    ucfr -f "$PACKAGE" "$CONFIG"
  else
    ucfr "$PACKAGE" "$CONFIG"
  fi

rm -f "$tempfile" "$tempfile.md5sum"
}

#
# Function for setup /etc/default/*
# Usage: call from postins script "setup_etc_default <package> $@"
#
# if there is fresh install, generate default /etc/default/* file
# if there is upgrade from old version, then set ENABLED=no if /etc/bacula/do_not_run present
# if there is upgrade from recent version, then preserve ENABLED, ARGS and CONFIG variables/
#
setup_etc_default() {
    local PACKAGE SERVICE ARGS DEFAULT_ARGS ENABLED CONFIG DEFAULTS tempfile
    PACKAGE="$1"

if [ "$2" != "configure" ]; then
        return
    fi

case "$1" in
        bacula-fd)
            SERVICE="bacula-fd"
            ARGS=""
            ;;
        bacula-sd)
            SERVICE="bacula-sd"
            ARGS="-u bacula -g tape"
            ;;
        bacula-director-pgsql|bacula-director-mysql|bacula-director-sqlite3)
            SERVICE="bacula-dir"
            ARGS="-u bacula -g bacula"
            if ucfq -w "/etc/default/bacula-dir" \
                |egrep -q '^[^:]*:bacula-director-(pgsql|mysql|sqlite3):'; then
                UCFR_ARGS="-f"
            fi
            ;;
        *)
            echo "setup_defaults: unknown package \"$1\"" >&2
            return
    esac

ENABLED="yes"
    CONFIG="/etc/bacula/$SERVICE.conf"
    DEFAULTS="/etc/default/$SERVICE"
    UCFR_ARGS="${UCFR_ARGS:-}"

if [ -n "$3" ]; then
        if dpkg --compare-versions "$3" lt "5.2.6+dfsg-1"; then
            if [ -f "/etc/bacula/do_not_run" ]; then
                ENABLED="no"
            fi
        else
            if [ -f "$DEFAULTS" ]; then
                ENABLED=$(. $DEFAULTS; echo $ENABLED)
                CONFIG=$(. $DEFAULTS; echo $CONFIG)
            fi
        fi
    fi

#db_get "$PACKAGE/disable-service"
    #if [ "$RET" = "true" ]; then
    #    ENABLED="no"
    #fi

tempfile=`tempfile`
    cat >"$tempfile" <<_EOF
# defaults file for $SERVICE

# Service can be disabled by setting
# ENABLED="no"
ENABLED="$ENABLED"

# Additional start arguments can be provided here
# ARGS="$ARGS"
ARGS="$ARGS"

# Default config file can be changed here
# CONFIG="/etc/bacula/$SERVICE.conf"
CONFIG="$CONFIG"
_EOF

ucf --debconf-ok "$tempfile" "$DEFAULTS"
    ucfr $UCFR_ARGS "$PACKAGE" "$DEFAULTS"
    rm -f "$tempfile"
}

check_and_fix_unsafe_director_password()
{
  local PACKAGE REGEX

PACKAGE="$1"

#
  # There is a list of hardcoded bacula-dir passwords we need to change.
  # It is a passwords from versions 5.0.2-1, 5.0.2-1~bpo50+1, 5.0.2-2,
  # 5.0.2-2.1, 5.0.2-2.2, 5.0.2-2.2+b1, 5.0.2-2.2+squeeze1, 5.0.2-3, 5.0.3-1,
  # 5.0.3-1+b1, 5.0.3+dfsg-0.1
  #
  # 0Cv70F6pf01t6pB0opT4vQOnigDrR0v3L              1iEtM8qGBcbEox73tYcMslqh9FHZQWHM5
  # 2F9QsX5HXAhxMdF/lb9f7HH5kgO4/F6Y7qs4LBIYOIIc   2XfHt5qPm9p1VvoI85k4sxfONLOKyA7oL
  # 3W445fZe3Rx3RwowRaasfvqAXUwKWrR4               4hOvLQMC3HZyZ0VcbsOoPQ6vhGrbrvHDL
  # 4qByX84t7faibfxD34UltZ4qJ2USgj6                4QC2dWtqOtpXisWr6FkB6LlxCl5owtM6o
  # 5Q5f0KkIARGboVoAAEnqRZGKbTvR2b                 6irFJb1VuTw6nqMoJjhVHsPtDCTHMyOQHjQUF9Vk32ca
  # 6rAFCfK7IbMWPWrcLgji9qbo5sT212L8               6SH38Ric1fyQb6xZ2mdp2nAQtvOGZOLJq
  # 6wdMnDM4CT8TOW6VOsnSttg2ZsL5iRRn               9rfAm3BrNnS0vNPyQVW6GYH2xG6F1rT
  # 9UnjMj8qNDQyUL7YJpf6Ooe346e6o7VI               9XWwoB7f45Vb0wdLwXwd2RVEnhls7kuQa
  # a5Q9WkjZJrI6isbM1B3hrMIjc3jovayg4              aymIYMBgljG7OLD6mynJGsM6kaO1JiWQ
  # bP64DhKhdE3hFiwyt8ne5ZzWh9xjZvvCWvlB/SMJVtrp   BXROVXNeyF5no12LlPpoCtqSh1g3dHh7c
  # CDofAhw2nMZpsuNjjoe3sM4XtH3cB19bP              Cv70F6pf1t6pBopT4vQOnigDrR0v3L
  # DaQaoxNgWMA3lPCI5P8h23Q02Zacdm42G              e9kabod3EiTgx9qbNv4V5RjpF1HDjS9yx
  # EGNg0Zh0UDFJpO0eq69ol9R4Ig5Bni3Ly              FsrYgGJPETv7sjhhkfU9hfaUlMiov6ssB
  # GjZK2qGLHJakRp8j6hKxaZmqTsuwKB4nV              gyINS6bKThNm00a1n17m0by3YmI5Vfvmq
  # hpfaKNMc3FAb6sTSeBQj2rHFZiPoCPx5c              KLKnxeJ9fo9n7XX9l1rZ85gjexJyCW1R
  # LSI9O4UxSO4C68Sgog7i1UVoIDCX7GmB3              LTQ1ipXsaA6rhZaPqSaC6DNoPMML8L1f
  # qnjbN71J3NVcv8bCrxuTA6tQG695stXj               rcb82RMxnwMjJX0uPqswTPVPwZBtNviiI
  # rcCeojyNh8XzyE8noBO6G+u30ur+gIa1YtXPhnUMJ8jJ   S8jSXrIaGjucBQlFuEhmbp2jVEXf3r1v
  # ShT7MAwYr266OifJZexThUYHLg3F7dkgR              ToNS3inSon4o/Aqeg0xLEFhKcpftFvOtO+xvmS1oNzt5
  # tSLtGaKpfUumMeY83T2e0bRUvRdPCTynP              TtVEcetNhA2efDyQgHIHUdVObU5CdsI7WcodXdd+bynR
  # UwPG7aIXF7jQ8IGhQZNhdBc21sT3U9UGA              Uyd4tCavXf2oxjVdNAypHbcql0yW4tW
  # V06HqWef3HlWOrPhqcwNZSQpSvYdERgB               VFxkQ5mNv61q6uMncr2YjRpkE8sLQ9O
  # VMnjGGIe1ih6im48HGTouUi4H7ijV74A               wbdPn9gXYLn9PmQ2HiCm1VWHPMSsM5wF
  # XmOtJg1Adsxp8T73wtCAOKOUJ0r3pEF                ZFjFYMCU6HWWVxMNTQ10BmDUYvFrYwuwM
  # x9tkKeZdfDjSgJeD1lTarCa32yP8EsfwjSjsIuO9n/J7

if grep -Eq "$REGEX" "/etc/bacula/bacula-dir.conf"; then
    readOrCreatePasswords
    sed -i -Ee "s/$REGEX/Password = \"$(eval echo \"\$DIRPASSWD\" |sed -e 's/[\/&]/\\&/g')\"/" "/etc/bacula/bacula-dir.conf"

db_input high $PACKAGE/unsafe-director-password-was-changed || true
    db_go
  fi
}