3 files changed, 160 insertions, 0 deletions
diff --git a/builder/modules.d/conf-tgz/hooks/fetch-config-tgz.sh b/builder/modules.d/conf-tgz/hooks/fetch-config-tgz.sh
new file mode 100755
index 00000000..8c3bed23
--- /dev/null
+++ b/builder/modules.d/conf-tgz/hooks/fetch-config-tgz.sh
@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+# -*- coding: utf-8 -*-
+
+source '/usr/lib/rebash/core.sh'
+core.import exceptions
+core.import logging
+type emergency_shell >/dev/null 2>&1 || source /lib/dracut-lib.sh
+
+exceptions.try
+{
+    logging.set_commands_level debug
+    logging.set_level debug
+    # NOTE: "getarg" raises an exception so deactivate exceptions for now.
+    exceptions.deactivate
+    slx_server="$(getarg slxsrv=)"
+    slx_server_base="$(getarg slxbase=)"
+    exceptions.activate
+
+    logging.info "Download config.tgz from '${slx_server}'..."
+    IFS_backup="$IFS"
+    IFS=','
+    for host in ${slx_server}; do
+        logging.info "Trying host \"$host\"."
+        if wget --timeout 5 \
+            "http://${host}/${slx_server_base}/config.tgz" \
+            --output-document "/etc/config.tgz"
+        then
+            break
+        fi
+    done
+    IFS="$IFS_backup"
+
+    if [[ ! -e "/etc/config.tgz" ]]; then
+        logging.warn "Downloading 'config.tgz' from '${slx_server}' failed. Return code: $return_code"
+        exit 1
+    fi
+}
+exceptions.catch
+{
+    logging.error "$exceptions_last_traceback"
+    emergency_shell "error in ${BASH_SOURCE[0]}"
+}
diff --git a/builder/modules.d/conf-tgz/hooks/unpack-config-tgz.sh b/builder/modules.d/conf-tgz/hooks/unpack-config-tgz.sh
new file mode 100755
index 00000000..083fbc6e
--- /dev/null
+++ b/builder/modules.d/conf-tgz/hooks/unpack-config-tgz.sh
@@ -0,0 +1,72 @@
+#!/usr/bin/env bash
+# -*- coding: utf-8 -*-
+
+source '/usr/lib/rebash/core.sh'
+core.import exceptions
+core.import logging
+type emergency_shell >/dev/null 2>&1 || source /lib/dracut-lib.sh
+
+# this module unpacks the config.tgz
+temporary_extract_directory="$(mktemp -d)"
+exceptions.try
+{
+    logging.set_commands_level debug
+    logging.set_level debug
+    exceptions.activate
+    if [[ -e "/etc/config.tgz" ]]; then
+        tar --extract --preserve-permissions \
+            --file="/etc/config.tgz" \
+            --directory="$temporary_extract_directory"
+    fi
+}
+exceptions.catch
+{
+    logging.error "Failed to extract '/etc/config.tgz' to '$temporary_extract_directory'."
+    logging.error "$exceptions_last_traceback"
+    emergency_shell "error in ${BASH_SOURCE[0]}"
+}
+# extracted to temporary directory, now check for SLX_LOCAL_CONFIGURATION
+source "/etc/openslx"
+exceptions.try
+{
+    logging.set_commands_level debug
+    logging.set_level debug
+    exceptions.activate
+    if [[ -z "$SLX_LOCAL_CONFIGURATION" ]]; then
+        logging.warn "SLX_LOCAL_CONFIGURATION is not set in '/etc/openslx'."
+        exit 0
+    fi
+    if [[ ! -d "${temporary_extract_directory}/openslx-configs/${SLX_LOCAL_CONFIGURATION}" ]]; then
+        logging.warn "SLX_LOCAL_CONFIGURATION is set but no corresponding folder found in '/etc/config.tgz'."
+        exit 0
+    fi
+    # still here? then process to merge the localized configuration files with the common files.
+    cd "${temporary_extract_directory}/openslx-configs/${SLX_LOCAL_CONFIGURATION}"
+    tar --create --preserve-permissions * | tar --extract --preserve-permissions --directory "${temporary_extract_directory}"
+}
+exceptions.catch
+{
+    # errors here are not critical, so no emergency shell
+    logging.error "Failed to merge local configuration files for '$SLX_LOCAL_CONFIGURATION'."
+    logging.error "$exceptions_last_traceback"
+    emergency_shell "error in ${BASH_SOURCE[0]}"
+}
+
+# now just copy everything from the temporary_extract_directory to the future root
+exceptions.try
+{
+    logging.set_commands_level debug
+    logging.set_level debug
+    exceptions.activate
+    cd "${temporary_extract_directory}"
+    # purge openslx-configs/
+    rm -rf "openslx-configs"
+    tar --create --preserve-permissions * | tar --extract --preserve-permissions --directory "${NEWROOT}"
+}
+exceptions.catch
+{
+    # errors here are not critical, so no emergency shell
+    logging.error "Failed to copy extracted configuration files to '$NEWROOT'."
+    logging.error "$exceptions_last_traceback"
+    emergency_shell "error in ${BASH_SOURCE[0]}"
+}
diff --git a/builder/modules.d/conf-tgz/module-setup.sh b/builder/modules.d/conf-tgz/module-setup.sh
new file mode 100755
index 00000000..946344bf
--- /dev/null
+++ b/builder/modules.d/conf-tgz/module-setup.sh
@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+# -*- coding: utf-8 -*-
+
+source "$(cd "$(dirname "${BASH_SOURCE[0]}")" && cd '../' && \
+    cd *'dnbd3-rootfs/scripts/rebash' && pwd)/core.sh"
+core.import exceptions
+core.import logging
+
+check() {
+    local __doc__='
+    Checks whether needed assumptions are satisfied.
+
+    Example:
+
+    `check`
+    '
+
+    # Here we could build our package file.
+
+    # Tell dracut that this module should only be included if it is required
+    # explicitly.
+    return 255
+}
+depends() {
+    local __doc__='
+    Outputs all dependent dracut modules to make this module work.
+
+    >>> depends
+    +doc_test_contains
+    base
+    '
+    echo base
+}
+install() {
+    local __doc__='
+    Copies all needed files into the initramfs image and registers all needed
+    dracut hooks.
+
+    Example:
+
+    `install`
+    '
+    inst_hook pre-mount 10 "$moddir/hooks/fetch-config-tgz.sh"
+    inst_hook pre-pivot 10 "$moddir/hooks/unpack-config-tgz.sh"
+    inst_multiple tar wget mktemp
+}