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|
extern crate rlua;
use std::fmt;
use self::rlua::prelude::*;
use irc::client::prelude::*;
use irc::error::Error as IrcError;
use std::sync::Mutex;
use plugin::*;
mod database;
use self::database::Database;
static LUA_SANDBOX: &'static str = include_str!("sandbox.lua");
#[derive(PluginName)]
pub struct Factoids<T: Database> {
factoids: Mutex<T>,
}
macro_rules! try_lock {
( $m:expr ) => {
match $m.lock() {
Ok(guard) => guard,
Err(poisoned) => poisoned.into_inner(),
}
}
}
impl<T: Database> Factoids<T> {
pub fn new(db: T) -> Factoids<T> {
Factoids { factoids: Mutex::new(db) }
}
fn add(&self, server: &IrcServer, command: &mut PluginCommand) -> Result<(), IrcError> {
if command.tokens.len() < 2 {
return self.invalid_command(server, command);
}
let name = command.tokens.remove(0);
try_lock!(self.factoids)
.insert(&name, &command.tokens.join(" "));
server.send_notice(&command.source, "Successfully added")
}
fn get(&self, server: &IrcServer, command: &PluginCommand) -> Result<(), IrcError> {
if command.tokens.len() < 1 {
self.invalid_command(server, command)
} else {
let name = &command.tokens[0];
let factoids = try_lock!(self.factoids);
let factoid = match factoids.get(name) {
Some(v) => v,
None => return self.invalid_command(server, command),
};
server.send_privmsg(&command.target, &format!("{}: {}", name, factoid))
}
}
fn exec(&self, server: &IrcServer, mut command: PluginCommand) -> Result<(), IrcError> {
if command.tokens.len() < 1 {
self.invalid_command(server, &command)
} else {
let name = command.tokens.remove(0);
let factoids = try_lock!(self.factoids);
let factoid = match factoids.get(&name) {
Some(v) => v,
None => return self.invalid_command(server, &command),
};
let value = if factoid.starts_with(">") {
let factoid = String::from(&factoid[1..]);
if factoid.starts_with(">") {
factoid
} else {
match self.run_lua(&name, &factoid, &command) {
Ok(v) => v,
Err(e) => format!("{}", e),
}
}
} else {
factoid
};
server.send_privmsg(&command.target, &value)
}
}
fn run_lua(&self,
name: &str,
code: &str,
command: &PluginCommand)
-> Result<String, rlua::Error> {
let args = command
.tokens
.iter()
.filter(|x| !x.is_empty())
.map(ToOwned::to_owned)
.collect::<Vec<String>>();
let lua = Lua::new();
let globals = lua.globals();
globals.set("factoid", lua.load(code, Some(name))?)?;
globals.set("args", args)?;
globals.set("input", command.tokens.join(" "))?;
globals.set("user", command.source.clone())?;
globals.set("channel", command.target.clone())?;
globals.set("output", lua.create_table())?;
lua.exec::<()>(LUA_SANDBOX, Some(name))?;
let output: Vec<String> = globals.get::<_, Vec<String>>("output")?;
Ok(output.join("|").replace("\n", "|"))
}
fn invalid_command(&self, server: &IrcServer, command: &PluginCommand) -> Result<(), IrcError> {
server.send_notice(&command.source, "Invalid Command")
}
}
impl<T: Database> Plugin for Factoids<T> {
fn is_allowed(&self, _: &IrcServer, message: &Message) -> bool {
match message.command {
Command::PRIVMSG(_, ref content) => content.starts_with('!'),
_ => false,
}
}
fn execute(&self, server: &IrcServer, message: &Message) -> Result<(), IrcError> {
if let Command::PRIVMSG(_, mut content) = message.command.clone() {
content.remove(0);
let t: Vec<String> = content.split(' ').map(ToOwned::to_owned).collect();
let c = PluginCommand {
source: message.source_nickname().unwrap().to_string(),
target: message.response_target().unwrap().to_string(),
tokens: t,
};
self.exec(server, c)
} else {
Ok(())
}
}
fn command(&self, server: &IrcServer, mut command: PluginCommand) -> Result<(), IrcError> {
if command.tokens.is_empty() {
return self.invalid_command(server, &command);
}
let sub_command = command.tokens.remove(0);
match sub_command.as_ref() {
"add" => self.add(server, &mut command),
"get" => self.get(server, &command),
"exec" => self.exec(server, command),
_ => self.invalid_command(server, &command),
}
}
}
impl<T: Database> fmt::Debug for Factoids<T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "Factoids {{ ... }}")
}
}
|
