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-rw-r--r--docker/netiquette/src/injector/iptables.mjs53
-rw-r--r--docker/netiquette/src/injector/upnp.mjs0
2 files changed, 53 insertions, 0 deletions
diff --git a/docker/netiquette/src/injector/iptables.mjs b/docker/netiquette/src/injector/iptables.mjs
new file mode 100644
index 0000000..584b560
--- /dev/null
+++ b/docker/netiquette/src/injector/iptables.mjs
@@ -0,0 +1,53 @@
+'use strict'
+
+let l;
+export default l = async (path, readFile, exec, log) => {
+
+ const load_static_rules = async path =>
+ (await readFile(path, 'utf-8'))
+ .split('\n')
+ .filter(e => e)
+
+ const get_current_rules = async () =>
+ (await exec('iptables -S INPUT'))
+ .stdout
+ .split('\n')
+ .filter(e => e.match(/^-A INPUT/g))
+
+ const compute_rules_to_add = (current, target) =>
+ target.filter(r => !current.includes(r))
+
+ const compute_rules_to_del = (current, target) =>
+ current
+ .filter(r => !target.includes(r))
+ .map(r => r.replace(/^-A INPUT/g, '-D INPUT'))
+
+ const update_rules = async (current, target) =>
+ await Promise.all([
+ ...compute_rules_to_del(current, target),
+ ...compute_rules_to_add(current, target)
+ ].map(r => exec(`iptables ${r}`)))
+
+ const build_target_rules = (tag_list) =>
+ tag_list
+ .map(t => /^public_port=(\d+)(-(\d+))?\/(udp|tcp)/g.exec(t))
+ .filter(t => t)
+ .map(t => new Object({ start: t[1], stop: t[3], protocol: t[4] }))
+ .map(t => t.stop
+ ? `-A INPUT -p ${t.protocol} --match multiport --dports ${t.start}:${t.stop} -j ACCEPT`
+ : `-A INPUT -p ${t.protocol} --dport ${t.start} -j ACCEPT`)
+
+ const do_log = (tag_list, r) => {
+ //log('[iptables]', tag_list)
+ log(`[iptables] ran ${r.length} commands`)
+ }
+
+ const static_rules = path ? await load_static_rules(path) : []
+ log(`[iptables] initialized with ${static_rules.length} static rules`)
+ return async tag_list =>
+ do_log(
+ tag_list,
+ await update_rules(
+ await get_current_rules(),
+ [...static_rules, ...build_target_rules(tag_list)]))
+}
diff --git a/docker/netiquette/src/injector/upnp.mjs b/docker/netiquette/src/injector/upnp.mjs
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/docker/netiquette/src/injector/upnp.mjs