From 87298226d0033a2db699d5bb6b1e1dbd7960c04a Mon Sep 17 00:00:00 2001
From: Scott Lawrence <scott+git@ineffectivetheory.com>
Date: Wed, 27 Nov 2024 22:49:58 -0700
Subject: Removing socket on exit

---
 Cargo.lock      | 26 ++++++++++++++++++++++++++
 Cargo.toml      |  1 +
 src/forecast.rs | 24 ++++++++++++++++++++++++
 src/main.rs     | 23 ++++++++++++++++++-----
 4 files changed, 69 insertions(+), 5 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 1304ff4..b1b20b9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -121,6 +121,12 @@ version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49f1f14873335454500d59611f1cf4a4b0f786f9ac11f4312a78e4cf2566695b"
 
+[[package]]
+name = "libc"
+version = "0.2.166"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c2ccc108bbc0b1331bd061864e7cd823c0cab660bbe6970e66e2c0614decde36"
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.84"
@@ -176,6 +182,25 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "signal-hook"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8621587d4798caf8eb44879d42e56b9a93ea5dcd315a6487c357130095b62801"
+dependencies = [
+ "libc",
+ "signal-hook-registry",
+]
+
+[[package]]
+name = "signal-hook-registry"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a9e9e0b4211b72e7b8b6e85c807d36c212bdb33ea8587f7569562a84df5465b1"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "strsim"
 version = "0.11.1"
@@ -213,6 +238,7 @@ dependencies = [
  "cty",
  "serde",
  "serde_json",
+ "signal-hook",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index c9a0fe0..72b9cc0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,3 +10,4 @@ clap = { version = "4.5.4", features = ["derive"] }
 cty = { version = "0.2.2" }
 serde = { version = "1.0.203", features = ["derive"] }
 serde_json = { version = "1.0" }
+signal-hook = "0.3.17"
diff --git a/src/forecast.rs b/src/forecast.rs
index e69de29..5a71665 100644
--- a/src/forecast.rs
+++ b/src/forecast.rs
@@ -0,0 +1,24 @@
+/* Varanus
+ * forecast.rs: lightweight time-series forecasting
+ *
+ * Copyright (c) 2024  Scott Lawrence.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ * and associated documentation files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or
+ * substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+ * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+pub struct Forecast {
+}
+
diff --git a/src/main.rs b/src/main.rs
index fbb23e2..ccff659 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -19,11 +19,11 @@
  */
 
 /* TODO
- *
- * Remove socket file when daemon exits.
  *
  * Accept command-line arguments to query only part of JSON. (Maybe also a formatting string?)
  *
+ * Forecast
+ *
  */
 
 use std::error;
@@ -37,6 +37,9 @@ use std::time::{Duration,Instant,SystemTime};
 
 use clap::Parser;
 use serde::{Serialize,Deserialize};
+use signal_hook::{consts::SIGINT, iterator::Signals};
+
+mod forecast;
 
 #[derive(Default)]
 #[repr(C)]
@@ -180,10 +183,20 @@ impl Listener {
 
     fn listen(&self) {
         let state_mutex = Arc::clone(&self.state);
-        let sfn = self.file.clone();
+        let sfn1 = self.file.clone();
+        let sfn2 = self.file.clone();
+        spawn(move || {
+            match Signals::new([SIGINT]) {
+                Ok(mut signals) => for _sig in signals.forever() {
+                    let _ = remove_file(&sfn1);
+                    std::process::exit(0)
+                },
+                Err(_) => ()
+            }
+        });
         spawn(move || {
-            let _ = remove_file(&sfn);
-            let listener = UnixListener::bind(sfn).unwrap();
+            let _ = remove_file(&sfn2);
+            let listener = UnixListener::bind(sfn2).unwrap();
             loop {
                 match listener.accept() {
                     Ok((mut socket,accept)) => {
-- 
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