Merge pull request 'Added an internal bot that can remove encryption for specific nicks' (#5) from dev-laptop into main

Reviewed-on: #5

Cargo.toml

@@ -10,7 +10,7 @@ argparse = "0.2.2"
 base64 = "0.21.4"
 dirs = "5.0.1"
 eyre = "0.6.8"
-ircparser = "0.2.1"
+ircparser = { git = "https://forgejo.vanten-s.com/vanten-s/ircparser" }
 openssl = "0.10"
 pgp = "0.10.2"
 rand = "0.8.5"

src/client_handler.rs

@@ -1,10 +1,41 @@
 use crate::helpers::bytes_to_privmsg_base64;
-use crate::{encryption, helpers};
+use crate::{encryption, helpers, State};
 use eyre::Result;
 use pgp::{Deserializable, SignedPublicKey};
 use std::collections::HashMap;
 use std::sync::mpsc::{Receiver, Sender};
 
+#[derive(Debug)]
+struct InvalidCommand;
+
+impl std::fmt::Display for InvalidCommand {
+    fn fmt(&self, _f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        Ok(())
+    }
+}
+
+impl std::error::Error for InvalidCommand {}
+
+fn parse_bouncer_command(message: String, state: &mut State) -> Result<()> {
+    macro_rules! unwrap_option {
+        ($t:expr) => {
+            match $t {
+                Some(val) => val,
+                None => return Err(InvalidCommand.into()),
+            }
+        };
+    }
+
+    let mut splitted = message.split(' ');
+    match unwrap_option!(splitted.next()) {
+        "ALLOW_UNENCRYPTED" => state
+            .nicks_without_encryption
+            .push(unwrap_option!(splitted.next()).to_string().to_lowercase()),
+        _ => return Err(InvalidCommand.into()),
+    };
+    Ok(())
+}
+
 pub fn handle_message_from_client(
     recieved: &str,
     public_key: &Vec<u8>,
@@ -14,10 +45,34 @@ pub fn handle_message_from_client(
     writer_channel_rx: &Receiver<String>,
     listener_channel_tx: &Sender<String>,
     _listener_channel_rx: &Receiver<String>,
+    state: &mut State,
 ) -> Result<()> {
-    let command = &ircparser::parse(recieved).expect("Got an invalid IRC instruction")[0];
+    let mut recieved = recieved.to_string();
+
+    if recieved.split(' ').count() == 1 {
+        recieved += " ";
+    }
+
+    let parsed = ircparser::parse(&recieved);
+    let command = match parsed {
+        Ok(val) => val[0].clone(),
+        Err(_) => {
+            writer_channel_tx.send(recieved)?;
+            return Ok(());
+        }
+    };
 
     if command.command == "PRIVMSG" && !command.params[0].starts_with('#') {
+        if command.params[0] == "BOUNCER" {
+            return parse_bouncer_command(command.params[1].clone(), state);
+        }
+        if state
+            .nicks_without_encryption
+            .contains(&command.params[0].to_lowercase())
+        {
+            writer_channel_tx.send(recieved)?;
+            return Ok(());
+        }
         let other = &command.params[0];
 
         if !keys.contains_key(other) {

src/helpers.rs

@@ -3,7 +3,7 @@ use eyre::Result;
 use std::sync::mpsc::{self, Receiver, Sender};
 
 #[derive(Debug)]
-struct IrcParseError;
+pub struct IrcParseError;
 
 impl std::fmt::Display for IrcParseError {
     fn fmt(&self, _: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
@@ -35,6 +35,22 @@ macro_rules! unwrap_or_return_option {
     };
 }
 
+pub struct State {
+    pub nicks_without_encryption: Vec<String>,
+}
+
+impl State {
+    pub fn new() -> Self {
+        State {
+            nicks_without_encryption: vec![
+                "nickserv".to_string(),
+                "chanserv".to_string(),
+                "hostserv".to_string(),
+            ],
+        }
+    }
+}
+
 fn forward(
     message: String,
     stream: &Sender<String>,

src/main.rs

@@ -1,6 +1,7 @@
 use argparse::{ArgumentParser, Store};
 use dirs::config_local_dir;
 use eyre::Result;
+use helpers::State;
 use pgp::{Deserializable, SignedPublicKey, SignedSecretKey};
 use std::collections::HashMap;
 use std::fs;
@@ -81,7 +82,11 @@ fn main() -> Result<()> {
 
     let tmp_port = port.clone();
     thread::spawn(move || {
-        listener_server::listen_to_client(listener_channel_send_tx, listener_channel_recv_rx, tmp_port)
+        listener_server::listen_to_client(
+            listener_channel_send_tx,
+            listener_channel_recv_rx,
+            tmp_port,
+        )
     });
     let tmp_port = server_port.clone();
     let tmp_server = server.clone();
@@ -95,6 +100,7 @@ fn main() -> Result<()> {
     });
 
     let mut keys: HashMap<String, SignedPublicKey> = HashMap::new();
+    let mut state = State::new();
 
     loop {
         match listener_channel_rx.try_recv() {
@@ -108,6 +114,7 @@ fn main() -> Result<()> {
                     &writer_channel_rx,
                     &listener_channel_tx,
                     &listener_channel_rx,
+                    &mut state,
                 );
             }
             Err(error) => match error {
@@ -129,6 +136,7 @@ fn main() -> Result<()> {
                     &writer_channel_rx,
                     &listener_channel_tx,
                     &listener_channel_rx,
+                    &mut state,
                 );
             }
             Err(error) => match error {

src/server_handler.rs

@@ -1,5 +1,6 @@
 use crate::unwrap_or_return_option;
 use crate::unwrap_or_return_result;
+use crate::State;
 use crate::{encryption, helpers};
 use eyre::Result;
 use pgp::{Deserializable, SignedPublicKey, SignedSecretKey};
@@ -25,15 +26,20 @@ pub fn handle_message_from_server(
     writer_channel_rx: &Receiver<String>,
     listener_channel_tx: &Sender<String>,
     _listener_channel_rx: &Receiver<String>,
+    state: &mut State,
 ) -> Result<()> {
     let recieved_parsed = &unwrap_or_return_result!(ircparser::parse(recieved))[0];
 
+    let default_reciever = String::new();
+
+    let reciever = match recieved_parsed.params.get(0) {
+        Some(val) => val,
+        None => &default_reciever,
+    };
+
     if recieved_parsed.command != "PRIVMSG"
-        || recieved_parsed
+        || reciever.starts_with('#')
-            .params
+        || state.nicks_without_encryption.contains(&reciever)
-            .get(0)
-            .unwrap_or(&String::new())
-            .starts_with('#')
     {
         forward(recieved, listener_channel_tx, server)?;
         return Ok(());