Respect IP ban expiry times

Cargo.lock

@@ -225,6 +225,19 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chrono"
+version = "0.4.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "670ad68c9088c2a963aaa298cb369688cf3f9465ce5e2d4ca10e6e0098a1ce73"
+dependencies = [
+ "libc",
+ "num-integer",
+ "num-traits",
+ "time",
+ "winapi",
+]
+
 [[package]]
 name = "clap"
 version = "3.0.0-beta.5"
@@ -640,6 +653,7 @@ version = "0.2.0"
 dependencies = [
  "anyhow",
  "bytes",
+ "chrono",
  "clap",
  "colored",
  "derive_builder",
@@ -774,6 +788,25 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "num-integer"
+version = "0.1.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2cc698a63b549a70bc047073d2949cce27cd1c7b0a4a862d08a8031bc2801db"
+dependencies = [
+ "autocfg 1.0.1",
+ "num-traits",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a64b1ec5cda2586e284722486d802acf1f7dbdc623e2bfc57e65ca1cd099290"
+dependencies = [
+ "autocfg 1.0.1",
+]
+
 [[package]]
 name = "num_cpus"
 version = "1.13.0"
@@ -1242,6 +1275,16 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "time"
+version = "0.1.43"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438"
+dependencies = [
+ "libc",
+ "winapi",
+]
+
 [[package]]
 name = "tokio"
 version = "1.14.0"

Cargo.toml

@@ -47,6 +47,7 @@ serde = "1.0"
 serde_json = "1.0"
 shlex = "1.1"
 thiserror = "1.0"
+chrono = "0.4"
 tokio = { version = "1", default-features = false, features = ["rt-multi-thread", "io-util", "net", "macros", "time", "process", "signal", "sync"] }
 toml = "0.5"
 version-compare = "0.1"

src/mc/ban.rs

@@ -4,11 +4,15 @@ use std::fs;
 use std::net::IpAddr;
 use std::path::Path;
 
+use chrono::{DateTime, Utc};
 use serde::Deserialize;
 
 /// File name.
 pub const FILE: &str = "banned-ips.json";
 
+/// The forever expiry literal.
+const EXPIRY_FOREVER: &str = "forever";
+
 /// List of banned IPs.
 #[derive(Debug, Default)]
 pub struct BannedIps {
@@ -56,8 +60,21 @@ pub struct BannedIp {
 impl BannedIp {
     /// Check if this entry is currently banned.
     pub fn is_banned(&self) -> bool {
-        // TODO: check expiry date here!
-        true
+        // If expiry is forever, the user is banned
+        if self.expires.trim().to_lowercase() == EXPIRY_FOREVER {
+            return true;
+        }
+
+        // Parse expiry time, check if it has passed
+        let expiry = match DateTime::parse_from_str(&self.expires, "%Y-%m-%d %H:%M:%S %z") {
+            Ok(expiry) => expiry,
+            Err(err) => {
+                error!(target: "lazymc", "Failed to parse ban expiry '{}', assuming still banned: {}", self.expires, err);
+                return true;
+            }
+        };
+
+        expiry > Utc::now()
     }
 }