fix(client): Handle invalid reddit response of base URL location

Author: sigaloid

src/client.rs

@@ -3,6 +3,7 @@ use cached::proc_macro::cached;
 use futures_lite::future::block_on;
 use futures_lite::{future::Boxed, FutureExt};
 use hyper::client::HttpConnector;
+use hyper::header::HeaderValue;
 use hyper::{body, body::Buf, client, header, Body, Client, Method, Request, Response, Uri};
 use hyper_rustls::HttpsConnector;
 use libflate::gzip;
@@ -21,6 +22,7 @@ use crate::server::RequestExt;
 use crate::utils::format_url;
 
 const REDDIT_URL_BASE: &str = "https://oauth.reddit.com";
+const ALTERNATIVE_REDDIT_URL_BASE: &str = "https://www.reddit.com";
 
 pub static CLIENT: Lazy<Client<HttpsConnector<HttpConnector>>> = Lazy::new(|| {
 	let https = hyper_rustls::HttpsConnectorBuilder::new()
@@ -221,12 +223,13 @@ fn request(method: &'static Method, path: String, redirect: bool, quarantine: bo
 						if !redirect {
 							return Ok(response);
 						};
-
+						let location_header = response.headers().get(header::LOCATION);
+						if location_header == Some(&HeaderValue::from_static("https://www.reddit.com/")) {
+							return Err("Reddit response was invalid".to_string());
+						}
 						return request(
 							method,
-							response
-								.headers()
-								.get(header::LOCATION)
+							location_header
 								.map(|val| {
 									// We need to make adjustments to the URI
 									// we get back from Reddit. Namely, we
@@ -239,7 +242,11 @@ fn request(method: &'static Method, path: String, redirect: bool, quarantine: bo
 									//     required.
 									//
 									//     2. Percent-encode the path.
-									let new_path = percent_encode(val.as_bytes(), CONTROLS).to_string().trim_start_matches(REDDIT_URL_BASE).to_string();
+									let new_path = percent_encode(val.as_bytes(), CONTROLS)
+										.to_string()
+										.trim_start_matches(REDDIT_URL_BASE)
+										.trim_start_matches(ALTERNATIVE_REDDIT_URL_BASE)
+										.to_string();
 									format!("{new_path}{}raw_json=1", if new_path.contains('?') { "&" } else { "?" })
 								})
 								.unwrap_or_default()
@@ -298,7 +305,7 @@ fn request(method: &'static Method, path: String, redirect: bool, quarantine: bo
 					}
 				}
 				Err(e) => {
-					dbg_msg!("{} {}: {}", method, path, e);
+					dbg_msg!("{method} {REDDIT_URL_BASE}{path}: {}", e);
 
 					Err(e.to_string())
 				}