mirror of
https://github.com/redlib-org/redlib.git
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8bb247af3b
* Added support for quarantined subreddits * Added confirmation wall for quarantined subreddits * Added quarantine walls to other routes and fixed case issue * Correct obsolete use of cookie() * Refactor param() and quarantine() Co-authored-by: Spike <19519553+spikecodes@users.noreply.github.com>
362 lines
11 KiB
Rust
362 lines
11 KiB
Rust
// CRATES
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use crate::esc;
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use crate::utils::{catch_random, error, format_num, format_url, param, redirect, rewrite_urls, setting, template, val, Post, Preferences, Subreddit};
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use crate::{client::json, server::ResponseExt, RequestExt};
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use askama::Template;
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use cookie::Cookie;
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use hyper::{Body, Request, Response};
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use time::{Duration, OffsetDateTime};
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// STRUCTS
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#[derive(Template)]
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#[template(path = "subreddit.html", escape = "none")]
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struct SubredditTemplate {
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sub: Subreddit,
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posts: Vec<Post>,
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sort: (String, String),
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ends: (String, String),
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prefs: Preferences,
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url: String,
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}
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#[derive(Template)]
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#[template(path = "wiki.html", escape = "none")]
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struct WikiTemplate {
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sub: String,
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wiki: String,
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page: String,
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prefs: Preferences,
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}
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#[derive(Template)]
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#[template(path = "wall.html", escape = "none")]
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struct WallTemplate {
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title: String,
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sub: String,
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msg: String,
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prefs: Preferences,
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url: String,
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}
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// SERVICES
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pub async fn community(req: Request<Body>) -> Result<Response<Body>, String> {
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// Build Reddit API path
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let root = req.uri().path() == "/";
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let subscribed = setting(&req, "subscriptions");
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let front_page = setting(&req, "front_page");
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let post_sort = req.cookie("post_sort").map_or_else(|| "hot".to_string(), |c| c.value().to_string());
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let sort = req.param("sort").unwrap_or_else(|| req.param("id").unwrap_or(post_sort));
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let sub = req.param("sub").unwrap_or(if front_page == "default" || front_page.is_empty() {
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if subscribed.is_empty() {
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"popular".to_string()
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} else {
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subscribed.to_owned()
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}
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} else {
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front_page.to_owned()
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});
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let quarantined = can_access_quarantine(&req, &sub) || root;
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// Handle random subreddits
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if let Ok(random) = catch_random(&sub, "").await {
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return Ok(random);
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}
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if req.param("sub").is_some() && sub.starts_with("u_") {
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return Ok(redirect(["/user/", &sub[2..]].concat()));
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}
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let path = format!("/r/{}/{}.json?{}&raw_json=1", sub, sort, req.uri().query().unwrap_or_default());
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match Post::fetch(&path, String::new(), quarantined).await {
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Ok((posts, after)) => {
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// If you can get subreddit posts, also request subreddit metadata
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let sub = if !sub.contains('+') && sub != subscribed && sub != "popular" && sub != "all" {
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// Regular subreddit
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subreddit(&sub, quarantined).await.unwrap_or_default()
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} else if sub == subscribed {
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// Subscription feed
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if req.uri().path().starts_with("/r/") {
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subreddit(&sub, quarantined).await.unwrap_or_default()
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} else {
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Subreddit::default()
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}
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} else if sub.contains('+') {
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// Multireddit
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Subreddit {
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name: sub,
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..Subreddit::default()
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}
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} else {
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Subreddit::default()
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};
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let url = String::from(req.uri().path_and_query().map_or("", |val| val.as_str()));
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template(SubredditTemplate {
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sub,
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posts,
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sort: (sort, param(&path, "t").unwrap_or_default()),
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ends: (param(&path, "after").unwrap_or_default(), after),
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prefs: Preferences::new(req),
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url,
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})
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}
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Err(msg) => match msg.as_str() {
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"quarantined" => quarantine(req, sub),
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"private" => error(req, format!("r/{} is a private community", sub)).await,
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"banned" => error(req, format!("r/{} has been banned from Reddit", sub)).await,
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_ => error(req, msg).await,
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},
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}
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}
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pub fn quarantine(req: Request<Body>, sub: String) -> Result<Response<Body>, String> {
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let wall = WallTemplate {
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title: format!("r/{} is quarantined", sub),
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msg: "Please click the button below to continue to this subreddit.".to_string(),
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url: req.uri().to_string(),
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sub,
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prefs: Preferences::new(req),
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};
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Ok(
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Response::builder()
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.status(403)
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.header("content-type", "text/html")
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.body(wall.render().unwrap_or_default().into())
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.unwrap_or_default(),
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)
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}
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pub async fn add_quarantine_exception(req: Request<Body>) -> Result<Response<Body>, String> {
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let subreddit = req.param("sub").ok_or("Invalid URL")?;
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let redir = param(&format!("?{}", req.uri().query().unwrap_or_default()), "redir").ok_or("Invalid URL")?;
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let mut res = redirect(redir.to_owned());
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res.insert_cookie(
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Cookie::build(&format!("allow_quaran_{}", subreddit.to_lowercase()), "true")
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.path("/")
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.http_only(true)
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.expires(cookie::Expiration::Session)
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.finish(),
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);
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Ok(res)
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}
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pub fn can_access_quarantine(req: &Request<Body>, sub: &str) -> bool {
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// Determine if the subreddit can be accessed
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setting(&req, &format!("allow_quaran_{}", sub.to_lowercase())).parse().unwrap_or_default()
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}
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// Sub or unsub by setting subscription cookie using response "Set-Cookie" header
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pub async fn subscriptions(req: Request<Body>) -> Result<Response<Body>, String> {
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let sub = req.param("sub").unwrap_or_default();
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// Handle random subreddits
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if sub == "random" || sub == "randnsfw" {
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return Err("Can't subscribe to random subreddit!".to_string());
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}
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let query = req.uri().query().unwrap_or_default().to_string();
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let action: Vec<String> = req.uri().path().split('/').map(String::from).collect();
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let mut sub_list = Preferences::new(req).subscriptions;
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// Retrieve list of posts for these subreddits to extract display names
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let posts = json(format!("/r/{}/hot.json?raw_json=1", sub), true).await?;
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let display_lookup: Vec<(String, &str)> = posts["data"]["children"]
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.as_array()
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.map(|list| {
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list
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.iter()
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.map(|post| {
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let display_name = post["data"]["subreddit"].as_str().unwrap_or_default();
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(display_name.to_lowercase(), display_name)
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})
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.collect::<Vec<_>>()
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})
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.unwrap_or_default();
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// Find each subreddit name (separated by '+') in sub parameter
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for part in sub.split('+') {
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// Retrieve display name for the subreddit
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let display;
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let part = if let Some(&(_, display)) = display_lookup.iter().find(|x| x.0 == part.to_lowercase()) {
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// This is already known, doesn't require seperate request
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display
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} else {
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// This subreddit display name isn't known, retrieve it
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let path: String = format!("/r/{}/about.json?raw_json=1", part);
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display = json(path, true).await?;
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display["data"]["display_name"].as_str().ok_or_else(|| "Failed to query subreddit name".to_string())?
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};
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// Modify sub list based on action
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if action.contains(&"subscribe".to_string()) && !sub_list.contains(&part.to_owned()) {
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// Add each sub name to the subscribed list
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sub_list.push(part.to_owned());
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// Reorder sub names alphabettically
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sub_list.sort_by_key(|a| a.to_lowercase())
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} else if action.contains(&"unsubscribe".to_string()) {
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// Remove sub name from subscribed list
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sub_list.retain(|s| s != part);
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}
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}
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// Redirect back to subreddit
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// check for redirect parameter if unsubscribing from outside sidebar
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let path = match param(&format!("?{}", query), "redirect") {
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Some(redirect_path) => format!("/{}/", redirect_path),
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None => format!("/r/{}", sub)
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};
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let mut res = redirect(path);
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// Delete cookie if empty, else set
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if sub_list.is_empty() {
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res.remove_cookie("subscriptions".to_string());
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} else {
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res.insert_cookie(
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Cookie::build("subscriptions", sub_list.join("+"))
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.path("/")
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.http_only(true)
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.expires(OffsetDateTime::now_utc() + Duration::weeks(52))
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.finish(),
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);
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}
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Ok(res)
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}
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pub async fn wiki(req: Request<Body>) -> Result<Response<Body>, String> {
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let sub = req.param("sub").unwrap_or_else(|| "reddit.com".to_string());
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let quarantined = can_access_quarantine(&req, &sub);
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// Handle random subreddits
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if let Ok(random) = catch_random(&sub, "/wiki").await {
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return Ok(random);
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}
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let page = req.param("page").unwrap_or_else(|| "index".to_string());
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let path: String = format!("/r/{}/wiki/{}.json?raw_json=1", sub, page);
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match json(path, quarantined).await {
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Ok(response) => template(WikiTemplate {
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sub,
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wiki: rewrite_urls(response["data"]["content_html"].as_str().unwrap_or("<h3>Wiki not found</h3>")),
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page,
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prefs: Preferences::new(req),
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}),
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Err(msg) => {
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if msg == "quarantined" {
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quarantine(req, sub)
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} else {
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error(req, msg).await
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}
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}
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}
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}
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pub async fn sidebar(req: Request<Body>) -> Result<Response<Body>, String> {
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let sub = req.param("sub").unwrap_or_else(|| "reddit.com".to_string());
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let quarantined = can_access_quarantine(&req, &sub);
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// Handle random subreddits
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if let Ok(random) = catch_random(&sub, "/about/sidebar").await {
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return Ok(random);
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}
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// Build the Reddit JSON API url
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let path: String = format!("/r/{}/about.json?raw_json=1", sub);
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// Send a request to the url
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match json(path, quarantined).await {
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// If success, receive JSON in response
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Ok(response) => template(WikiTemplate {
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wiki: format!(
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"{}<hr><h1>Moderators</h1><br><ul>{}</ul>",
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rewrite_urls(&val(&response, "description_html").replace("\\", "")),
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moderators(&sub, quarantined).await?.join(""),
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),
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sub,
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page: "Sidebar".to_string(),
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prefs: Preferences::new(req),
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}),
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Err(msg) => {
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if msg == "quarantined" {
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quarantine(req, sub)
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} else {
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error(req, msg).await
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}
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}
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}
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}
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pub async fn moderators(sub: &str, quarantined: bool) -> Result<Vec<String>, String> {
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// Retrieve and format the html for the moderators list
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Ok(
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moderators_list(sub, quarantined)
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.await?
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.iter()
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.map(|m| format!("<li><a style=\"color: var(--accent)\" href=\"/u/{name}\">{name}</a></li>", name = m))
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.collect(),
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)
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}
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async fn moderators_list(sub: &str, quarantined: bool) -> Result<Vec<String>, String> {
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// Build the moderator list URL
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let path: String = format!("/r/{}/about/moderators.json?raw_json=1", sub);
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// Retrieve response
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let response = json(path, quarantined).await?["data"]["children"].clone();
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Ok(
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// Traverse json tree and format into list of strings
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response
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.as_array()
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.unwrap_or(&Vec::new())
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.iter()
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.filter_map(|moderator| {
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let name = moderator["name"].as_str().unwrap_or_default();
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if name.is_empty() {
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None
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} else {
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Some(name.to_string())
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}
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})
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.collect::<Vec<_>>(),
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)
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}
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// SUBREDDIT
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async fn subreddit(sub: &str, quarantined: bool) -> Result<Subreddit, String> {
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// Build the Reddit JSON API url
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let path: String = format!("/r/{}/about.json?raw_json=1", sub);
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// Send a request to the url
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match json(path, quarantined).await {
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// If success, receive JSON in response
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Ok(res) => {
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// Metadata regarding the subreddit
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let members: i64 = res["data"]["subscribers"].as_u64().unwrap_or_default() as i64;
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let active: i64 = res["data"]["accounts_active"].as_u64().unwrap_or_default() as i64;
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// Fetch subreddit icon either from the community_icon or icon_img value
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let community_icon: &str = res["data"]["community_icon"].as_str().unwrap_or_default();
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let icon = if community_icon.is_empty() { val(&res, "icon_img") } else { community_icon.to_string() };
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let sub = Subreddit {
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name: esc!(&res, "display_name"),
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title: esc!(&res, "title"),
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description: esc!(&res, "public_description"),
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info: rewrite_urls(&val(&res, "description_html").replace("\\", "")),
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moderators: moderators_list(sub, quarantined).await?,
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icon: format_url(&icon),
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members: format_num(members),
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active: format_num(active),
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wiki: res["data"]["wiki_enabled"].as_bool().unwrap_or_default(),
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};
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Ok(sub)
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}
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// If the Reddit API returns an error, exit this function
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Err(msg) => return Err(msg),
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}
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}
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