From 33b85ff0de0e5d50ce820d115d1f9e3699e2aaef Mon Sep 17 00:00:00 2001
From: Franziska Kunsmann <hi@kunsmann.eu>
Date: Fri, 8 Jan 2021 16:10:44 +0100
Subject: [PATCH] bundles/transmission: add bundle, add to home.downloadhelper

---
 bundles/transmission/items.py    | 21 +++++++++
 bundles/transmission/metadata.py | 79 ++++++++++++++++++++++++++++++++
 nodes/home/downloadhelper.py     | 10 ++++
 3 files changed, 110 insertions(+)
 create mode 100644 bundles/transmission/items.py
 create mode 100644 bundles/transmission/metadata.py

diff --git a/bundles/transmission/items.py b/bundles/transmission/items.py
new file mode 100644
index 0000000..f00b1ca
--- /dev/null
+++ b/bundles/transmission/items.py
@@ -0,0 +1,21 @@
+from bundlewrap.metadata import metadata_to_json
+
+# transmission overwrites this on a restart. As of 2021-01 there's no
+# way of disabling that.
+files = {
+    '/etc/transmission-daemon/settings.json': {
+        'content': metadata_to_json(node.metadata['transmission']['config']),
+        'mode': '0444',
+        'triggers': {
+            'svc_systemd:transmission-daemon:reload',
+        },
+    },
+}
+
+svc_systemd = {
+    'transmission-daemon': {
+        'needs': {
+            'pkg_apt:transmission-daemon',
+        },
+    },
+}
diff --git a/bundles/transmission/metadata.py b/bundles/transmission/metadata.py
new file mode 100644
index 0000000..7e63c33
--- /dev/null
+++ b/bundles/transmission/metadata.py
@@ -0,0 +1,79 @@
+defaults = {
+    'apt': {
+        'packages': {
+            'transmission-daemon': {},
+            'transmission-remote-cli': {},
+        },
+    },
+    'icinga2_api': {
+        'transmission': {
+            'services': {
+                'TRANSMISSION PROCESS': {
+                    'command_on_monitored_host': '/usr/lib/nagios/plugins/check_procs -a transmission-daemon -c 1:',
+                },
+            },
+        },
+    },
+    'transmission': {
+        'config': {
+            'message-level': 2,
+            'peer-port': 51413,
+            'port-forwarding-enabled': False,
+            'rename-partial-files': True,
+            'rpc-authentication-required': False,
+            'rpc-bind-address': '0.0.0.0',
+            'rpc-enabled': True,
+            'rpc-host-whitelist-enabled': False,
+            'rpc-port': 9091,
+            'rpc-url': '/transmission/',
+            'rpc-whitelist-enabled': False,
+            'start-added-torrents': True,
+        },
+    },
+}
+
+
+@metadata_reactor.provides(
+    'iptables/bundle_rules/transmission',
+)
+def iptables(metadata):
+    interfaces = metadata.get('transmission/webinterface-on-interfaces', set())
+    iptables = []
+
+    iptables.append('iptables_both -A INPUT -p udp --dport {} -j ACCEPT'.format(
+        metadata.get('transmission/config/peer-port'),
+    ))
+
+    for iface in sorted(interfaces):
+        iptables.append('iptables_both -A INPUT -i {} -p tcp --dport {} -j ACCEPT'.format(
+            iface,
+            metadata.get('transmission/config/rpc-port'),
+        ))
+
+    return {
+        'iptables': {
+            'bundle_rules': {
+                'transmission': iptables,
+            },
+        },
+    }
+
+
+@metadata_reactor.provides(
+    'icinga2_api/transmission/services',
+)
+def icinga_web(metadata):
+    port = metadata.get('transmission/config/rpc-port')
+    path = metadata.get('transmission/config/rpc-url')
+
+    return {
+        'icinga2_api': {
+            'transmission': {
+                'services': {
+                    'TRANSMISSION WEB INTERFACE': {
+                        'command_on_monitored_host': f'/usr/local/share/icinga/plugins/check_http_url_for_string http://127.0.0.1:{port}{path} "Transmission"',
+                    },
+                },
+            },
+        },
+    }
diff --git a/nodes/home/downloadhelper.py b/nodes/home/downloadhelper.py
index 108ff1c..cbd73cc 100644
--- a/nodes/home/downloadhelper.py
+++ b/nodes/home/downloadhelper.py
@@ -3,6 +3,7 @@ nodes['home.downloadhelper'] = {
     'bundles': {
         'iptables',
         'nfs-client',
+        'transmission',
     },
     'groups': {
         'debian-buster',
@@ -40,5 +41,14 @@ nodes['home.downloadhelper'] = {
                 },
             },
         },
+        'transmission': {
+            'config': {
+                'download-dir': '/mnt/nas',
+                'download-queue-size': 10,
+            },
+            'webinterface-on-interfaces': {
+                'enp1s0.42',
+            },
+        },
     },
 }