use crate::{settings::Settings, APIError}; use actix_web::dev::ConnectionInfo; use chrono::{DateTime, FixedOffset, NaiveDateTime}; use itertools::Itertools; use rand::{distributions::Alphanumeric, thread_rng, Rng}; use regex::{Regex, RegexBuilder}; lazy_static! { static ref EMAIL_REGEX: Regex = Regex::new(r"^[a-zA-Z0-9.!#$%&’*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$").unwrap(); static ref SLUR_REGEX: Regex = RegexBuilder::new(r"(fag(g|got|tard)?\b|cock\s?sucker(s|ing)?|\bn(i|1)g(\b|g?(a|er)?(s|z)?)\b|mudslime?s?|kikes?|\bspi(c|k)s?\b|\bchinks?|gooks?|bitch(es|ing|y)?|whor(es?|ing)|\btr(a|@)nn?(y|ies?)|\b(b|re|r)tard(ed)?s?)").case_insensitive(true).build().unwrap(); static ref USERNAME_MATCHES_REGEX: Regex = Regex::new(r"/u/[a-zA-Z][0-9a-zA-Z_]*").unwrap(); // TODO keep this old one, it didn't work with port well tho // static ref MENTIONS_REGEX: Regex = Regex::new(r"@(?P[\w.]+)@(?P[a-zA-Z0-9._-]+\.[a-zA-Z0-9_-]+)").unwrap(); static ref MENTIONS_REGEX: Regex = Regex::new(r"@(?P[\w.]+)@(?P[a-zA-Z0-9._:-]+)").unwrap(); static ref VALID_USERNAME_REGEX: Regex = Regex::new(r"^[a-zA-Z0-9_]{3,20}$").unwrap(); static ref VALID_COMMUNITY_NAME_REGEX: Regex = Regex::new(r"^[a-z0-9_]{3,20}$").unwrap(); static ref VALID_POST_TITLE_REGEX: Regex = Regex::new(r".*\S.*").unwrap(); } pub fn naive_from_unix(time: i64) -> NaiveDateTime { NaiveDateTime::from_timestamp(time, 0) } pub fn convert_datetime(datetime: NaiveDateTime) -> DateTime { DateTime::::from_utc(datetime, FixedOffset::east(0)) } pub fn remove_slurs(test: &str) -> String { SLUR_REGEX.replace_all(test, "*removed*").to_string() } pub(crate) fn slur_check(test: &str) -> Result<(), Vec<&str>> { let mut matches: Vec<&str> = SLUR_REGEX.find_iter(test).map(|mat| mat.as_str()).collect(); // Unique matches.sort_unstable(); matches.dedup(); if matches.is_empty() { Ok(()) } else { Err(matches) } } pub fn check_slurs(text: &str) -> Result<(), APIError> { if let Err(slurs) = slur_check(text) { Err(APIError::err(&slurs_vec_to_str(slurs))) } else { Ok(()) } } pub fn check_slurs_opt(text: &Option) -> Result<(), APIError> { match text { Some(t) => check_slurs(t), None => Ok(()), } } pub(crate) fn slurs_vec_to_str(slurs: Vec<&str>) -> String { let start = "No slurs - "; let combined = &slurs.join(", "); [start, combined].concat() } pub fn generate_random_string() -> String { thread_rng() .sample_iter(&Alphanumeric) .map(char::from) .take(30) .collect() } pub fn markdown_to_html(text: &str) -> String { comrak::markdown_to_html(text, &comrak::ComrakOptions::default()) } // TODO nothing is done with community / group webfingers yet, so just ignore those for now #[derive(Clone, PartialEq, Eq, Hash)] pub struct MentionData { pub name: String, pub domain: String, } impl MentionData { pub fn is_local(&self) -> bool { Settings::get().hostname.eq(&self.domain) } pub fn full_name(&self) -> String { format!("@{}@{}", &self.name, &self.domain) } } pub fn scrape_text_for_mentions(text: &str) -> Vec { let mut out: Vec = Vec::new(); for caps in MENTIONS_REGEX.captures_iter(text) { out.push(MentionData { name: caps["name"].to_string(), domain: caps["domain"].to_string(), }); } out.into_iter().unique().collect() } pub fn is_valid_username(name: &str) -> bool { VALID_USERNAME_REGEX.is_match(name) } // Can't do a regex here, reverse lookarounds not supported pub fn is_valid_preferred_username(preferred_username: &str) -> bool { !preferred_username.starts_with('@') && preferred_username.chars().count() >= 3 && preferred_username.chars().count() <= 20 } pub fn is_valid_community_name(name: &str) -> bool { VALID_COMMUNITY_NAME_REGEX.is_match(name) } pub fn is_valid_post_title(title: &str) -> bool { VALID_POST_TITLE_REGEX.is_match(title) } pub fn get_ip(conn_info: &ConnectionInfo) -> String { conn_info .realip_remote_addr() .unwrap_or("127.0.0.1:12345") .split(':') .next() .unwrap_or("127.0.0.1") .to_string() }