added structopt

Dockerfile

@@ -16,7 +16,7 @@ FROM frolvlad/alpine-glibc AS test
 
 COPY --from=eventbuild /build/target/x86_64-unknown-linux-musl/debug/wg-event-gen /usr/bin/
 
-RUN echo "2df798799c5049324174c4df0189695d  -" > test.md5 && wg-event-gen | md5sum -c test.md5
+RUN echo "d41d8cd98f00b204e9800998ecf8427e  -" > test.md5 && wg-event-gen | md5sum -c test.md5
 
 FROM golang AS build
 

init.sh

@@ -47,7 +47,8 @@ setup_iptables "A"
 sleep 3
 
 if [ -e "/usr/bin/wg-event-gen" ]; then
- sleep 3 && /usr/bin/wg-event-gen /var/run/wireguard/$WG_IF.sock 3000
+ export WG_EVENT_SOCKET=/var/run/wireguard/$WG_IF.sock
+ /usr/bin/wg-event-gen
 else
  while [ -e "/sys/class/net/$WG_IF/operstate" ]; do
   sleep 10

wg-event-gen/Cargo.lock

@@ -1,3 +1,21 @@
+[[package]]
+name = "ansi_term"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "atty"
+version = "0.2.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.47 (registry+https://github.com/rust-lang/crates.io-index)",
+ "termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "base64"
 version = "0.10.0"
@@ -6,11 +24,38 @@ dependencies = [
  "byteorder 1.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "bitflags"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "byteorder"
 version = "1.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "clap"
+version = "2.32.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "textwrap 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "heck"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unicode-segmentation 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "hex"
 version = "0.3.2"
@@ -21,11 +66,88 @@ name = "libc"
 version = "0.2.47"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "proc-macro2"
+version = "0.4.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "quote"
+version = "0.6.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.25 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "redox_syscall"
 version = "0.1.50"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "redox_termios"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "redox_syscall 0.1.50 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "strsim"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "structopt"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "structopt-derive 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "structopt-derive"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.4.25 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.26 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "syn"
+version = "0.15.26"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.25 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "termion"
+version = "1.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.47 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.50 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "textwrap"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "time"
 version = "0.1.42"
@@ -36,12 +158,34 @@ dependencies = [
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "unicode-segmentation"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "unicode-width"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "unicode-xid"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "vec_map"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "wg-event-gen"
 version = "0.1.0"
 dependencies = [
  "base64 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "structopt 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "structopt-derive 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -65,12 +209,30 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [metadata]
+"checksum ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
+"checksum atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "9a7d5b8723950951411ee34d271d99dddcc2035a16ab25310ea2c8cfd4369652"
 "checksum base64 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "621fc7ecb8008f86d7fb9b95356cd692ce9514b80a86d85b397f32a22da7b9e2"
+"checksum bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "228047a76f468627ca71776ecdebd732a3423081fcf5125585bcd7c49886ce12"
 "checksum byteorder 1.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "94f88df23a25417badc922ab0f5716cc1330e87f71ddd9203b3a3ccd9cedf75d"
+"checksum clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b957d88f4b6a63b9d70d5f454ac8011819c6efa7727858f458ab71c756ce2d3e"
+"checksum heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "20564e78d53d2bb135c343b3f47714a56af2061f1c928fdb541dc7b9fdd94205"
 "checksum hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "805026a5d0141ffc30abb3be3173848ad46a1b1664fe632428479619a3644d77"
 "checksum libc 0.2.47 (registry+https://github.com/rust-lang/crates.io-index)" = "48450664a984b25d5b479554c29cc04e3150c97aa4c01da5604a2d4ed9151476"
+"checksum proc-macro2 0.4.25 (registry+https://github.com/rust-lang/crates.io-index)" = "d3797b7142c9aa74954e351fc089bbee7958cebbff6bf2815e7ffff0b19f547d"
+"checksum quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)" = "53fa22a1994bd0f9372d7a816207d8a2677ad0325b073f5c5332760f0fb62b5c"
 "checksum redox_syscall 0.1.50 (registry+https://github.com/rust-lang/crates.io-index)" = "52ee9a534dc1301776eff45b4fa92d2c39b1d8c3d3357e6eb593e0d795506fc2"
+"checksum redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e891cfe48e9100a70a3b6eb652fef28920c117d366339687bd5576160db0f76"
+"checksum strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bb4f380125926a99e52bc279241539c018323fab05ad6368b56f93d9369ff550"
+"checksum structopt 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)" = "670ad348dc73012fcf78c71f06f9d942232cdd4c859d4b6975e27836c3efc0c3"
+"checksum structopt-derive 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)" = "ef98172b1a00b0bec738508d3726540edcbd186d50dfd326f2b1febbb3559f04"
+"checksum syn 0.15.26 (registry+https://github.com/rust-lang/crates.io-index)" = "f92e629aa1d9c827b2bb8297046c1ccffc57c99b947a680d3ccff1f136a3bee9"
+"checksum termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "689a3bdfaab439fd92bc87df5c4c78417d3cbe537487274e9b0b2dce76e92096"
+"checksum textwrap 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "307686869c93e71f94da64286f9a9524c0f308a9e1c87a583de8e9c9039ad3f6"
 "checksum time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)" = "db8dcfca086c1143c9270ac42a2bbd8a7ee477b78ac8e45b19abfb0cbede4b6f"
+"checksum unicode-segmentation 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "aa6024fc12ddfd1c6dbc14a80fa2324d4568849869b779f6bd37e5e4c03344d1"
+"checksum unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "882386231c45df4700b275c7ff55b6f3698780a650026380e72dabe76fa46526"
+"checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
+"checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
 "checksum winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "92c1eb33641e276cfa214a0522acad57be5c56b10cb348b3c5117db75f3ac4b0"
 "checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 "checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"

wg-event-gen/Cargo.toml

@@ -8,6 +8,8 @@ edition = "2018"
 hex = "0.3.2"
 base64 = "0.10.0"
 time = "0.1.42"
+structopt = "0.2.14"
+structopt-derive = "0.2.14"
 
 [profile.release]
 lto = false

wg-event-gen/src/main.rs

@@ -1,11 +1,16 @@
+#[macro_use]
+extern crate structopt;
+
 mod gen;
 mod listener;
+mod opts;
 
 use crate::gen::*;
 use crate::listener::*;
 
 use base64;
 use hex;
+use opts::Opts;
 use std::collections::HashMap;
 use std::env;
 use std::fmt;
@@ -16,6 +21,8 @@ use std::os::unix::net::UnixStream;
 use std::path::PathBuf;
 use std::thread;
 use std::time::Duration;
+use structopt::StructOpt;
+
 use time;
 
 pub type KV = (String, String);
@@ -239,41 +246,19 @@ impl Socket {
 }
 
 fn main() {
-    let mut args = env::args();
+    let opts = Opts::from_args();
-    args.next(); //Ignore program name
+
-    let path = args
+    let timeout = Duration::from_secs(opts.timeout);
-        .next()
+    let interval = Duration::from_secs(opts.poll);
-        .map(PathBuf::from)
+    let events = opts.events;
-        .filter(|p| p.as_path().exists());
+    let path = opts.socket;
-    let interval = Duration::from_millis(
+
-        args.next()
-            .map(|i| {
-                i.parse::<u64>()
-                    .expect("[interval] has to be a positive int")
-            })
-            .unwrap_or(1000),
-    );
     let mut listeners: Vec<Box<EventListener>> = vec![Box::new(LogListener)];
 
-    let events: PathBuf = "/etc/wireguard/events.sh".into();
+    if let Some(events) = events {
-
-    if events.exists() {
         listeners.push(Box::new(ScriptListener::new(events)))
     }
 
-    let timeout = env::vars()
-        .collect::<HashMap<String, String>>()
-        .get("WG_EVENT_GEN_TIMEOUT")
-        .map(|timeout| {
-            Duration::from_secs(
-                timeout
-                    .parse::<u64>()
-                    .expect(&format!("Can't parse {} as timeout", timeout)),
-            )
-        })
-        .unwrap_or(Duration::from_secs(30));
-
-    if let Some(path) = path {
     let sock = Socket { path };
     let mut prev_state: Option<HashMap<String, Peer>> = None;
     loop {
@@ -290,7 +275,4 @@ fn main() {
         prev_state = Some(state);
         thread::sleep(interval);
     }
-    } else {
-        println!("<path> does not exist");
-    }
 }

wg-event-gen/src/opts.rs

@@ -0,0 +1,18 @@
+use std::path::PathBuf;
+use structopt::StructOpt;
+
+#[derive(StructOpt, Debug)]
+#[structopt(name = "event-gen")]
+pub struct Opts {
+    #[structopt(short = "t", long = "timeout", default_value = "120", env = "WG_EVENT_TIMEOUT")]
+    pub timeout: u64,
+
+    #[structopt(short = "p", long = "poll-interval", default_value = "3000", env = "WG_EVENT_INTERVAL")]
+    pub poll: u64,
+
+    #[structopt(short = "e", long = "event-handler", parse(from_os_str), env = "WG_EVENT_HANDLER")]
+    pub events: Option<PathBuf>,
+
+    #[structopt(name = "SOCKET", parse(from_os_str), env = "WG_EVENT_SOCKET")]
+    pub socket: PathBuf,
+}