136 lines
3.8 KiB
Rust
136 lines
3.8 KiB
Rust
use crate::utils::vec_to_string::convert_to_vec_string;
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use serde::Deserialize;
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use serde_json::Value;
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use std::fs::File;
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use std::io::Read;
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#[derive(Deserialize, Debug)]
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pub struct Forwarding {
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from: String,
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to: String,
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#[serde(rename = "doReverse")]
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do_reverse: bool,
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}
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impl Forwarding {
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pub fn new(from: String, to: String, do_reverse: bool) -> Forwarding {
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Forwarding {
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from,
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to,
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do_reverse,
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}
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}
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pub fn from_json(json: &Value) -> Forwarding {
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let object_forwarding = json.as_object().expect("Error parsing forwarding");
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let from = object_forwarding
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.get("from")
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.unwrap()
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.as_str()
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.expect("Error parsing from field");
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let to = object_forwarding
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.get("to")
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.unwrap()
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.as_str()
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.expect("Error parsing to field");
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let do_reverse = object_forwarding
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.get("doReverse")
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.unwrap()
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.as_bool()
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.expect("Error parsing doReverse field");
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Forwarding::new(from.to_string(), to.to_string(), do_reverse)
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}
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}
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#[derive(Deserialize)]
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pub struct Config {
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#[serde(rename = "serverAddr")]
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server_addr: String,
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blacklist: Vec<String>,
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forwarding: Vec<Forwarding>,
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}
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impl Config {
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pub fn new(server_addr: String, blacklist: Vec<String>, forwarding: Vec<Forwarding>) -> Config {
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Config {
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server_addr,
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blacklist,
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forwarding,
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}
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}
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fn read_config_file(file_name: String) -> String {
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let mut file = File::open(file_name)
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.expect("Error opening config.json file. Go to the readme file and paste the example.");
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let mut buf = String::new();
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file.read_to_string(&mut buf)
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.expect("Error reading config file content.");
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buf
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}
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fn parse_buffer(buf: &str) -> serde_json::Map<String, Value> {
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let json: Value = serde_json::from_str(buf).expect("Error parsing config file");
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let object_data = json.as_object().expect("Error parsing config file.");
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object_data.clone()
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}
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fn parse_forwarding(str_forwarding: &Vec<Value>) -> Vec<Forwarding> {
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let mut vec_forwarding = Vec::new();
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for json_forwarding in str_forwarding {
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vec_forwarding.push(Forwarding::from_json(json_forwarding));
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}
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vec_forwarding
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}
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pub fn from_json(file_name: String) -> Config {
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let buf = Config::read_config_file(file_name);
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let object_data = Self::parse_buffer(&buf);
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let server_addr = object_data
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.get("serverAddr")
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.unwrap()
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.as_str()
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.unwrap()
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.to_string();
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let blacklist = object_data.get("blacklist").unwrap().as_array().unwrap();
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let str_blacklist = convert_to_vec_string(blacklist);
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let raw_forwarding = object_data
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.get("forwarding")
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.unwrap()
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.as_array()
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.expect("Error parsing forwarding.");
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let forwardings = Self::parse_forwarding(raw_forwarding);
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Config::new(server_addr, str_blacklist, forwardings)
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}
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pub fn addr_is_blacklisted(&self, addr: &String) -> bool {
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self.blacklist.contains(addr)
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}
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pub fn is_forwarded(&self, addr: String) -> Option<String> {
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for elem_forwarding in &self.forwarding {
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if elem_forwarding.from == addr {
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return Some(elem_forwarding.to.clone());
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} else if elem_forwarding.do_reverse && elem_forwarding.to == addr {
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return Some(elem_forwarding.from.clone());
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}
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}
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None
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}
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pub fn get_server_addr(&self) -> String {
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self.server_addr.to_string()
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}
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}
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