From 017efafe9baaa5c542082136d584bd391487e0f8 Mon Sep 17 00:00:00 2001
From: Teo Mrnjavac <teo@kde.org>
Date: Fri, 13 May 2016 16:10:32 +0200
Subject: [PATCH] New luksopenswaphookcfg module to set up openswap
 configuration.

---
 .../luksopenswaphookcfg.conf                  |  2 +
 src/modules/luksopenswaphookcfg/main.py       | 73 +++++++++++++++++++
 src/modules/luksopenswaphookcfg/module.desc   |  5 ++
 3 files changed, 80 insertions(+)
 create mode 100644 src/modules/luksopenswaphookcfg/luksopenswaphookcfg.conf
 create mode 100644 src/modules/luksopenswaphookcfg/main.py
 create mode 100644 src/modules/luksopenswaphookcfg/module.desc

diff --git a/src/modules/luksopenswaphookcfg/luksopenswaphookcfg.conf b/src/modules/luksopenswaphookcfg/luksopenswaphookcfg.conf
new file mode 100644
index 000000000..886867f8d
--- /dev/null
+++ b/src/modules/luksopenswaphookcfg/luksopenswaphookcfg.conf
@@ -0,0 +1,2 @@
+---
+configFilePath: /etc/openswap.conf
diff --git a/src/modules/luksopenswaphookcfg/main.py b/src/modules/luksopenswaphookcfg/main.py
new file mode 100644
index 000000000..77686f65e
--- /dev/null
+++ b/src/modules/luksopenswaphookcfg/main.py
@@ -0,0 +1,73 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# === This file is part of Calamares - <http://github.com/calamares> ===
+#
+#   Copyright 2016, Teo Mrnjavac <teo@kde.org>
+#
+#   Calamares 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 3 of the License, or
+#   (at your option) any later version.
+#
+#   Calamares is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with Calamares. If not, see <http://www.gnu.org/licenses/>.
+
+import libcalamares
+
+
+def write_openswap_conf(partitions, openswap_conf_path):
+    swap_outer_uuid = ""
+    swap_mapper_name = ""
+    mountable_keyfile_device = ""
+
+    for partition in partitions:
+        if partition["fs"] == "linuxswap" and "luksMapperName" in partition:
+            swap_outer_uuid = partition["luksUuid"]
+            swap_mapper_name = partition["luksMapperName"]
+
+        elif partition["mountPoint"] == "/" and "luksMapperName" in partition:
+            mountable_keyfile_device = "/dev/mapper/{!s}".format(partition["luksMapperName"])
+
+    if not mountable_keyfile_device or not swap_outer_uuid:
+        return None
+
+    swap_device_path = "/dev/disk/by-uuid/{!s}".format(swap_outer_uuid)
+
+    lines = []
+    with open(openswap_conf_path, 'r') as openswap_file:
+        lines = [x.strip() for x in openswap_file.readlines()]
+
+    for i in range(len(lines)):
+        if lines[i].startswith("swap_device"):
+            lines[i] = "swap_device={!s}".format(swap_device_path)
+
+        elif lines[i].startswith("crypt_swap_name"):
+            lines[i] = "crypt_swap_name={!s}".format(swap_mapper_name)
+
+        elif lines[i].startswith("keyfile_device"):
+            lines[i] = "keyfile_device={!s}".format(mountable_keyfile_device)
+
+        elif lines[i].startswith("keyfile_filename"):
+            lines[i] = "keyfile_filename=crypto_keyfile.bin"
+
+    with open(openswap_conf_path, 'w') as openswap_file:
+        openswap_file.write("\n".join(lines) + "\n")
+
+    return None
+
+
+def run():
+    """
+    This module sets up the openswap hook for a resumable encrypted swap.
+    :return:
+    """
+
+    openswap_conf_path = libcalamares.job.configuration["configFilePath"]
+    partitions = libcalamares.globalstorage.value["partitions"]
+    return write_openswap_conf(partitions, openswap_conf_path)
diff --git a/src/modules/luksopenswaphookcfg/module.desc b/src/modules/luksopenswaphookcfg/module.desc
new file mode 100644
index 000000000..53f8b7c39
--- /dev/null
+++ b/src/modules/luksopenswaphookcfg/module.desc
@@ -0,0 +1,5 @@
+---
+type:       "job"
+name:       "luksopenswaphookcfg"
+interface:  "python"
+script:     "main.py"