1#@!#!123s

: / var / lib / dpkg / info /
Filename : cloud-init-base.config
back
#!/bin/sh

set -e

# shellcheck source=/dev/null
. /usr/share/debconf/confmodule

get_yaml_list() {
    # get_yaml_list(file, key, def): return a comma delimited list with the value
    # for the yaml array defined in 'key' from 'file'. if not found , return 'def'
    # only really supports 'key: [ en1, en2 ]' or 'key: [en1, en2]' formats.
    local file="$1" key="$2" default="$3"
    [ -f "$file" ] || return 1
    # strip all whitespace, delete lines not matching key:,
    # strip key: and [] and replace ',' with ', '
    # shellcheck disable=SC2026
    RET="$(sed -e "s/\s//g" -e "/^$key:/"'!'d \
               -e "s/$key:\[//" -e "s/]//" -e "s/,/, /g" "$file")"
    [ -n "$RET" ] || RET="$default"
}

# Migrate a debconf value from cloud-init/* to cloud-init-base/*
#
# Arguments:
#   Name of the debconf question
migrate_debconf_to_cloud_init_base() {
    local old="cloud-init/$1" new="cloud-init-base/$1"
    if db_get "$new"; then
        if db_get "$old" && [ -n "$RET" ]; then
            # Unset cloud-init/* because cloud-init-base can't unregister
            # cloud-init debconf values. db_set exits 0 but makes no debconf
            # changes.
            echo "Clearing ignored debconf value ${old}" 1>&2 || :
            db_set "$old" "" || :
        fi
    elif db_get "$old" && [ -n "$RET" ]; then
        echo "Migrating debconf value ${old} to ${new}" 1>&2 || :
        db_set "$new" "$RET"
        # Debconf cloud-init-base/* values override cloud-init/* values.
        # Unset cloud-init/* because cloud-init-base can't unregister cloud-init
        # debconf values. db_set exits 0 but makes no debconf changes.
        db_set "$old" "" || :
    fi
}

# old_dpkg_cfg is very old file that is no longer read by cloud-init.
# it gets re-named to cloud.cfg.d/90_dpkg.cfg in the preinst.
dpkg_cfg="/etc/cloud/cloud.cfg.d/90_dpkg.cfg"
old_dpkg_cfg="/etc/cloud/distro.cfg"
if [ -f "${old_dpkg_cfg}" ] && [ ! -f "$dpkg_cfg" ]; then
    dpkg_cfg="${old_dpkg_cfg}"
   echo "WARN: reading value from ${old_dpkg_cfg}" 1>&2
fi

# This handles the upgrade path from cloud-init to cloud-init-base.
# 24.04 is the last LTS series to be released with cloud-init, so this code
# can be removed in 26.10, to ensure the upgrade path from 24.04->26.04 is
# not broken.
migrate_debconf_to_cloud_init_base datasources

if [ -f "$dpkg_cfg" ]; then
    if get_yaml_list "$dpkg_cfg" datasource_list NOTFOUND &&
        val="$RET" && [ "$val" != "NOTFOUND" ]; then
        db_set cloud-init-base/datasources "$val"
    else
        echo "WARN: failed to read datasource_list from $dpkg_cfg" 1>&2
    fi
fi

db_input low cloud-init-base/datasources || true
db_go

exit 0