Some changes to help debug auth problems on lemmy.ml (#4220)

* Some changes to help debug auth problems on lemmy.ml

* fix

* clippy

config/defaults.hjson

@@ -98,4 +98,6 @@
   # Sets a response Access-Control-Allow-Origin CORS header
   # https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Access-Control-Allow-Origin
   cors_origin: "*"
+  # Always send cache-control: private header for api responses, avoid problems with wrong caching.
+  disable_cache_control: true
 }

crates/api/src/lib.rs

@@ -15,6 +15,7 @@ use lemmy_utils::{
 };
 use std::io::Cursor;
 use totp_rs::{Secret, TOTP};
+use tracing::log::warn;
 
 pub mod comment;
 pub mod comment_report;
@@ -84,6 +85,11 @@ pub fn read_auth_token(req: &HttpRequest) -> Result<Option<String>, LemmyError>
   else if let Some(cookie) = &req.cookie(AUTH_COOKIE_NAME) {
     Ok(Some(cookie.value().to_string()))
   }
+  // Read old auth cookie
+  else if let Some(cookie) = &req.cookie("jwt") {
+    warn!("Falling back to jwt cookie");
+    Ok(Some(cookie.value().to_string()))
+  }
   // Otherwise, there's no auth
   else {
     Ok(None)

crates/utils/src/settings/structs.rs

@@ -57,6 +57,9 @@ pub struct Settings {
   #[default(None)]
   #[doku(example = "*")]
   cors_origin: Option<String>,
+  /// Always send cache-control: private header for api responses, avoid problems with wrong caching.
+  #[default(None)]
+  pub disable_cache_control: Option<bool>,
 }
 
 impl Settings {

scripts/lint.sh

@@ -5,7 +5,7 @@ CWD="$(cd -P -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd -P)"
 
 cd $CWD/../
 
-cargo clippy --workspace --fix --allow-staged --allow-dirty --tests --all-targets --all-features -- -D warnings
+cargo clippy --workspace --fix --allow-staged --allow-dirty --tests --all-targets -- -D warnings
 
 # Format rust files
 cargo +nightly fmt

src/session_middleware.rs

@@ -11,6 +11,7 @@ use lemmy_api::{local_user_view_from_jwt, read_auth_token};
 use lemmy_api_common::context::LemmyContext;
 use reqwest::header::HeaderValue;
 use std::{future::ready, rc::Rc};
+use tracing::log::warn;
 
 #[derive(Clone)]
 pub struct SessionMiddleware {
@@ -71,8 +72,11 @@ where
         // TODO: this means it will be impossible to get any error message for invalid jwt. Need
         //       to add a separate endpoint for that.
         //       https://github.com/LemmyNet/lemmy/issues/3702
-        let local_user_view = local_user_view_from_jwt(jwt, &context).await.ok();
-        if let Some(local_user_view) = local_user_view {
+        let local_user_view = local_user_view_from_jwt(jwt, &context).await;
+        if let Err(e) = &local_user_view {
+          warn!("Failed to handle user login: {e}");
+        }
+        if let Ok(local_user_view) = local_user_view {
           req.extensions_mut().insert(local_user_view);
         }
       }
@@ -81,11 +85,14 @@ where
 
       // Add cache-control header. If user is authenticated, mark as private. Otherwise cache
       // up to one minute.
-      let cache_value = if jwt.is_some() {
+
+      let disable_cache = context.settings().disable_cache_control.unwrap_or(false);
+      let cache_value = if jwt.is_some() || disable_cache {
         "private"
       } else {
         "public, max-age=60"
       };
+
       res
         .headers_mut()
         .insert(CACHE_CONTROL, HeaderValue::from_static(cache_value));