From: Dessalines <tyhou13@gmx.com>
Date: Thu, 24 Sep 2020 14:14:09 +0000 (-0500)
Subject: Merge remote-tracking branch 'yerba/main' into main
X-Git-Url: http://these/git/%22https:/join-lemmy.org/%22%7B%7D/static/%7BelementUrl%7D?a=commitdiff_plain;h=4de80dc29d51cd1003c46d617e3b6b873db99d61;p=lemmy.git

Merge remote-tracking branch 'yerba/main' into main
---

4de80dc29d51cd1003c46d617e3b6b873db99d61
diff --cc lemmy_api/src/lib.rs
index 00000000,905075b8..11ec4b34
mode 000000,100644..100644
--- a/lemmy_api/src/lib.rs
+++ b/lemmy_api/src/lib.rs
@@@ -1,0 -1,509 +1,539 @@@
+ use crate::claims::Claims;
+ use actix_web::{web, web::Data};
+ use anyhow::anyhow;
+ use lemmy_db::{
+   community::Community,
+   community_view::CommunityUserBanView,
+   post::Post,
+   user::User_,
+   Crud,
+   DbPool,
+ };
+ use lemmy_structs::{blocking, comment::*, community::*, post::*, site::*, user::*};
+ use lemmy_utils::{
+   apub::get_apub_protocol_string,
+   request::{retry, RecvError},
+   settings::Settings,
+   APIError,
+   ConnectionId,
+   LemmyError,
+ };
+ use lemmy_websocket::{serialize_websocket_message, LemmyContext, UserOperation};
+ use log::error;
+ use percent_encoding::{utf8_percent_encode, NON_ALPHANUMERIC};
+ use reqwest::Client;
+ use serde::Deserialize;
+ use std::process::Command;
++use url::Url;
+ 
+ pub mod claims;
+ pub mod comment;
+ pub mod community;
+ pub mod post;
+ pub mod site;
+ pub mod user;
+ pub mod version;
+ 
+ #[async_trait::async_trait(?Send)]
+ pub trait Perform {
+   type Response: serde::ser::Serialize + Send;
+ 
+   async fn perform(
+     &self,
+     context: &Data<LemmyContext>,
+     websocket_id: Option<ConnectionId>,
+   ) -> Result<Self::Response, LemmyError>;
+ }
+ 
+ pub(in crate) async fn is_mod_or_admin(
+   pool: &DbPool,
+   user_id: i32,
+   community_id: i32,
+ ) -> Result<(), LemmyError> {
+   let is_mod_or_admin = blocking(pool, move |conn| {
+     Community::is_mod_or_admin(conn, user_id, community_id)
+   })
+   .await?;
+   if !is_mod_or_admin {
+     return Err(APIError::err("not_a_mod_or_admin").into());
+   }
+   Ok(())
+ }
+ pub async fn is_admin(pool: &DbPool, user_id: i32) -> Result<(), LemmyError> {
+   let user = blocking(pool, move |conn| User_::read(conn, user_id)).await??;
+   if !user.admin {
+     return Err(APIError::err("not_an_admin").into());
+   }
+   Ok(())
+ }
+ 
+ pub(in crate) async fn get_post(post_id: i32, pool: &DbPool) -> Result<Post, LemmyError> {
+   match blocking(pool, move |conn| Post::read(conn, post_id)).await? {
+     Ok(post) => Ok(post),
+     Err(_e) => Err(APIError::err("couldnt_find_post").into()),
+   }
+ }
+ 
+ pub(in crate) async fn get_user_from_jwt(jwt: &str, pool: &DbPool) -> Result<User_, LemmyError> {
+   let claims = match Claims::decode(&jwt) {
+     Ok(claims) => claims.claims,
+     Err(_e) => return Err(APIError::err("not_logged_in").into()),
+   };
+   let user_id = claims.id;
+   let user = blocking(pool, move |conn| User_::read(conn, user_id)).await??;
+   // Check for a site ban
+   if user.banned {
+     return Err(APIError::err("site_ban").into());
+   }
+   Ok(user)
+ }
+ 
+ pub(in crate) async fn get_user_from_jwt_opt(
+   jwt: &Option<String>,
+   pool: &DbPool,
+ ) -> Result<Option<User_>, LemmyError> {
+   match jwt {
+     Some(jwt) => Ok(Some(get_user_from_jwt(jwt, pool).await?)),
+     None => Ok(None),
+   }
+ }
+ 
+ pub(in crate) async fn check_community_ban(
+   user_id: i32,
+   community_id: i32,
+   pool: &DbPool,
+ ) -> Result<(), LemmyError> {
+   let is_banned = move |conn: &'_ _| CommunityUserBanView::get(conn, user_id, community_id).is_ok();
+   if blocking(pool, is_banned).await? {
+     Err(APIError::err("community_ban").into())
+   } else {
+     Ok(())
+   }
+ }
+ 
++pub(in crate) async fn linked_instances(pool: &DbPool) -> Result<Vec<String>, LemmyError> {
++  let mut instances: Vec<String> = Vec::new();
++
++  if Settings::get().federation.enabled {
++    let distinct_communities = blocking(pool, move |conn| {
++      Community::distinct_federated_communities(conn)
++    })
++    .await??;
++
++    instances = distinct_communities
++      .iter()
++      .map(|actor_id| Ok(Url::parse(actor_id)?.host_str().unwrap_or("").to_string()))
++      .collect::<Result<Vec<String>, LemmyError>>()?;
++
++    instances.append(&mut Settings::get().get_allowed_instances());
++    instances.retain(|a| {
++      !Settings::get().get_blocked_instances().contains(a)
++        && !a.eq("")
++        && !a.eq(&Settings::get().hostname)
++    });
++
++    // Sort and remove dupes
++    instances.sort_unstable();
++    instances.dedup();
++  }
++
++  Ok(instances)
++}
++
+ pub async fn match_websocket_operation(
+   context: LemmyContext,
+   id: ConnectionId,
+   op: UserOperation,
+   data: &str,
+ ) -> Result<String, LemmyError> {
+   match op {
+     // User ops
+     UserOperation::Login => do_websocket_operation::<Login>(context, id, op, data).await,
+     UserOperation::Register => do_websocket_operation::<Register>(context, id, op, data).await,
+     UserOperation::GetCaptcha => do_websocket_operation::<GetCaptcha>(context, id, op, data).await,
+     UserOperation::GetUserDetails => {
+       do_websocket_operation::<GetUserDetails>(context, id, op, data).await
+     }
+     UserOperation::GetReplies => do_websocket_operation::<GetReplies>(context, id, op, data).await,
+     UserOperation::AddAdmin => do_websocket_operation::<AddAdmin>(context, id, op, data).await,
+     UserOperation::BanUser => do_websocket_operation::<BanUser>(context, id, op, data).await,
+     UserOperation::GetUserMentions => {
+       do_websocket_operation::<GetUserMentions>(context, id, op, data).await
+     }
+     UserOperation::MarkUserMentionAsRead => {
+       do_websocket_operation::<MarkUserMentionAsRead>(context, id, op, data).await
+     }
+     UserOperation::MarkAllAsRead => {
+       do_websocket_operation::<MarkAllAsRead>(context, id, op, data).await
+     }
+     UserOperation::DeleteAccount => {
+       do_websocket_operation::<DeleteAccount>(context, id, op, data).await
+     }
+     UserOperation::PasswordReset => {
+       do_websocket_operation::<PasswordReset>(context, id, op, data).await
+     }
+     UserOperation::PasswordChange => {
+       do_websocket_operation::<PasswordChange>(context, id, op, data).await
+     }
+     UserOperation::UserJoin => do_websocket_operation::<UserJoin>(context, id, op, data).await,
+     UserOperation::PostJoin => do_websocket_operation::<PostJoin>(context, id, op, data).await,
+     UserOperation::CommunityJoin => {
+       do_websocket_operation::<CommunityJoin>(context, id, op, data).await
+     }
+     UserOperation::SaveUserSettings => {
+       do_websocket_operation::<SaveUserSettings>(context, id, op, data).await
+     }
+ 
+     // Private Message ops
+     UserOperation::CreatePrivateMessage => {
+       do_websocket_operation::<CreatePrivateMessage>(context, id, op, data).await
+     }
+     UserOperation::EditPrivateMessage => {
+       do_websocket_operation::<EditPrivateMessage>(context, id, op, data).await
+     }
+     UserOperation::DeletePrivateMessage => {
+       do_websocket_operation::<DeletePrivateMessage>(context, id, op, data).await
+     }
+     UserOperation::MarkPrivateMessageAsRead => {
+       do_websocket_operation::<MarkPrivateMessageAsRead>(context, id, op, data).await
+     }
+     UserOperation::GetPrivateMessages => {
+       do_websocket_operation::<GetPrivateMessages>(context, id, op, data).await
+     }
+ 
+     // Site ops
+     UserOperation::GetModlog => do_websocket_operation::<GetModlog>(context, id, op, data).await,
+     UserOperation::CreateSite => do_websocket_operation::<CreateSite>(context, id, op, data).await,
+     UserOperation::EditSite => do_websocket_operation::<EditSite>(context, id, op, data).await,
+     UserOperation::GetSite => do_websocket_operation::<GetSite>(context, id, op, data).await,
+     UserOperation::GetSiteConfig => {
+       do_websocket_operation::<GetSiteConfig>(context, id, op, data).await
+     }
+     UserOperation::SaveSiteConfig => {
+       do_websocket_operation::<SaveSiteConfig>(context, id, op, data).await
+     }
+     UserOperation::Search => do_websocket_operation::<Search>(context, id, op, data).await,
+     UserOperation::TransferCommunity => {
+       do_websocket_operation::<TransferCommunity>(context, id, op, data).await
+     }
+     UserOperation::TransferSite => {
+       do_websocket_operation::<TransferSite>(context, id, op, data).await
+     }
+     UserOperation::ListCategories => {
+       do_websocket_operation::<ListCategories>(context, id, op, data).await
+     }
+ 
+     // Community ops
+     UserOperation::GetCommunity => {
+       do_websocket_operation::<GetCommunity>(context, id, op, data).await
+     }
+     UserOperation::ListCommunities => {
+       do_websocket_operation::<ListCommunities>(context, id, op, data).await
+     }
+     UserOperation::CreateCommunity => {
+       do_websocket_operation::<CreateCommunity>(context, id, op, data).await
+     }
+     UserOperation::EditCommunity => {
+       do_websocket_operation::<EditCommunity>(context, id, op, data).await
+     }
+     UserOperation::DeleteCommunity => {
+       do_websocket_operation::<DeleteCommunity>(context, id, op, data).await
+     }
+     UserOperation::RemoveCommunity => {
+       do_websocket_operation::<RemoveCommunity>(context, id, op, data).await
+     }
+     UserOperation::FollowCommunity => {
+       do_websocket_operation::<FollowCommunity>(context, id, op, data).await
+     }
+     UserOperation::GetFollowedCommunities => {
+       do_websocket_operation::<GetFollowedCommunities>(context, id, op, data).await
+     }
+     UserOperation::BanFromCommunity => {
+       do_websocket_operation::<BanFromCommunity>(context, id, op, data).await
+     }
+     UserOperation::AddModToCommunity => {
+       do_websocket_operation::<AddModToCommunity>(context, id, op, data).await
+     }
+ 
+     // Post ops
+     UserOperation::CreatePost => do_websocket_operation::<CreatePost>(context, id, op, data).await,
+     UserOperation::GetPost => do_websocket_operation::<GetPost>(context, id, op, data).await,
+     UserOperation::GetPosts => do_websocket_operation::<GetPosts>(context, id, op, data).await,
+     UserOperation::EditPost => do_websocket_operation::<EditPost>(context, id, op, data).await,
+     UserOperation::DeletePost => do_websocket_operation::<DeletePost>(context, id, op, data).await,
+     UserOperation::RemovePost => do_websocket_operation::<RemovePost>(context, id, op, data).await,
+     UserOperation::LockPost => do_websocket_operation::<LockPost>(context, id, op, data).await,
+     UserOperation::StickyPost => do_websocket_operation::<StickyPost>(context, id, op, data).await,
+     UserOperation::CreatePostLike => {
+       do_websocket_operation::<CreatePostLike>(context, id, op, data).await
+     }
+     UserOperation::SavePost => do_websocket_operation::<SavePost>(context, id, op, data).await,
+ 
+     // Comment ops
+     UserOperation::CreateComment => {
+       do_websocket_operation::<CreateComment>(context, id, op, data).await
+     }
+     UserOperation::EditComment => {
+       do_websocket_operation::<EditComment>(context, id, op, data).await
+     }
+     UserOperation::DeleteComment => {
+       do_websocket_operation::<DeleteComment>(context, id, op, data).await
+     }
+     UserOperation::RemoveComment => {
+       do_websocket_operation::<RemoveComment>(context, id, op, data).await
+     }
+     UserOperation::MarkCommentAsRead => {
+       do_websocket_operation::<MarkCommentAsRead>(context, id, op, data).await
+     }
+     UserOperation::SaveComment => {
+       do_websocket_operation::<SaveComment>(context, id, op, data).await
+     }
+     UserOperation::GetComments => {
+       do_websocket_operation::<GetComments>(context, id, op, data).await
+     }
+     UserOperation::CreateCommentLike => {
+       do_websocket_operation::<CreateCommentLike>(context, id, op, data).await
+     }
+   }
+ }
+ 
+ async fn do_websocket_operation<'a, 'b, Data>(
+   context: LemmyContext,
+   id: ConnectionId,
+   op: UserOperation,
+   data: &str,
+ ) -> Result<String, LemmyError>
+ where
+   for<'de> Data: Deserialize<'de> + 'a,
+   Data: Perform,
+ {
+   let parsed_data: Data = serde_json::from_str(&data)?;
+   let res = parsed_data
+     .perform(&web::Data::new(context), Some(id))
+     .await?;
+   serialize_websocket_message(&op, &res)
+ }
+ 
+ pub(crate) fn captcha_espeak_wav_base64(captcha: &str) -> Result<String, LemmyError> {
+   let mut built_text = String::new();
+ 
+   // Building proper speech text for espeak
+   for mut c in captcha.chars() {
+     let new_str = if c.is_alphabetic() {
+       if c.is_lowercase() {
+         c.make_ascii_uppercase();
+         format!("lower case {} ... ", c)
+       } else {
+         c.make_ascii_uppercase();
+         format!("capital {} ... ", c)
+       }
+     } else {
+       format!("{} ...", c)
+     };
+ 
+     built_text.push_str(&new_str);
+   }
+ 
+   espeak_wav_base64(&built_text)
+ }
+ 
+ pub(crate) fn espeak_wav_base64(text: &str) -> Result<String, LemmyError> {
+   // Make a temp file path
+   let uuid = uuid::Uuid::new_v4().to_string();
+   let file_path = format!("/tmp/lemmy_espeak_{}.wav", &uuid);
+ 
+   // Write the wav file
+   Command::new("espeak")
+     .arg("-w")
+     .arg(&file_path)
+     .arg(text)
+     .status()?;
+ 
+   // Read the wav file bytes
+   let bytes = std::fs::read(&file_path)?;
+ 
+   // Delete the file
+   std::fs::remove_file(file_path)?;
+ 
+   // Convert to base64
+   let base64 = base64::encode(bytes);
+ 
+   Ok(base64)
+ }
+ 
+ #[derive(Deserialize, Debug)]
+ pub(crate) struct IframelyResponse {
+   title: Option<String>,
+   description: Option<String>,
+   thumbnail_url: Option<String>,
+   html: Option<String>,
+ }
+ 
+ pub(crate) async fn fetch_iframely(
+   client: &Client,
+   url: &str,
+ ) -> Result<IframelyResponse, LemmyError> {
+   let fetch_url = format!("http://iframely/oembed?url={}", url);
+ 
+   let response = retry(|| client.get(&fetch_url).send()).await?;
+ 
+   let res: IframelyResponse = response
+     .json()
+     .await
+     .map_err(|e| RecvError(e.to_string()))?;
+   Ok(res)
+ }
+ 
+ #[derive(Deserialize, Debug, Clone)]
+ pub(crate) struct PictrsResponse {
+   files: Vec<PictrsFile>,
+   msg: String,
+ }
+ 
+ #[derive(Deserialize, Debug, Clone)]
+ pub(crate) struct PictrsFile {
+   file: String,
+   delete_token: String,
+ }
+ 
+ pub(crate) async fn fetch_pictrs(
+   client: &Client,
+   image_url: &str,
+ ) -> Result<PictrsResponse, LemmyError> {
+   is_image_content_type(client, image_url).await?;
+ 
+   let fetch_url = format!(
+     "http://pictrs:8080/image/download?url={}",
+     utf8_percent_encode(image_url, NON_ALPHANUMERIC) // TODO this might not be needed
+   );
+ 
+   let response = retry(|| client.get(&fetch_url).send()).await?;
+ 
+   let response: PictrsResponse = response
+     .json()
+     .await
+     .map_err(|e| RecvError(e.to_string()))?;
+ 
+   if response.msg == "ok" {
+     Ok(response)
+   } else {
+     Err(anyhow!("{}", &response.msg).into())
+   }
+ }
+ 
+ async fn fetch_iframely_and_pictrs_data(
+   client: &Client,
+   url: Option<String>,
+ ) -> (
+   Option<String>,
+   Option<String>,
+   Option<String>,
+   Option<String>,
+ ) {
+   match &url {
+     Some(url) => {
+       // Fetch iframely data
+       let (iframely_title, iframely_description, iframely_thumbnail_url, iframely_html) =
+         match fetch_iframely(client, url).await {
+           Ok(res) => (res.title, res.description, res.thumbnail_url, res.html),
+           Err(e) => {
+             error!("iframely err: {}", e);
+             (None, None, None, None)
+           }
+         };
+ 
+       // Fetch pictrs thumbnail
+       let pictrs_hash = match iframely_thumbnail_url {
+         Some(iframely_thumbnail_url) => match fetch_pictrs(client, &iframely_thumbnail_url).await {
+           Ok(res) => Some(res.files[0].file.to_owned()),
+           Err(e) => {
+             error!("pictrs err: {}", e);
+             None
+           }
+         },
+         // Try to generate a small thumbnail if iframely is not supported
+         None => match fetch_pictrs(client, &url).await {
+           Ok(res) => Some(res.files[0].file.to_owned()),
+           Err(e) => {
+             error!("pictrs err: {}", e);
+             None
+           }
+         },
+       };
+ 
+       // The full urls are necessary for federation
+       let pictrs_thumbnail = if let Some(pictrs_hash) = pictrs_hash {
+         Some(format!(
+           "{}://{}/pictrs/image/{}",
+           get_apub_protocol_string(),
+           Settings::get().hostname,
+           pictrs_hash
+         ))
+       } else {
+         None
+       };
+ 
+       (
+         iframely_title,
+         iframely_description,
+         iframely_html,
+         pictrs_thumbnail,
+       )
+     }
+     None => (None, None, None, None),
+   }
+ }
+ 
+ pub(crate) async fn is_image_content_type(client: &Client, test: &str) -> Result<(), LemmyError> {
+   let response = retry(|| client.get(test).send()).await?;
+ 
+   if response
+     .headers()
+     .get("Content-Type")
+     .ok_or_else(|| anyhow!("No Content-Type header"))?
+     .to_str()?
+     .starts_with("image/")
+   {
+     Ok(())
+   } else {
+     Err(anyhow!("Not an image type.").into())
+   }
+ }
+ 
+ #[cfg(test)]
+ mod tests {
+   use crate::{captcha_espeak_wav_base64, is_image_content_type};
+ 
+   #[test]
+   fn test_image() {
+     actix_rt::System::new("tset_image").block_on(async move {
+       let client = reqwest::Client::default();
+       assert!(is_image_content_type(&client, "https://1734811051.rsc.cdn77.org/data/images/full/365645/as-virus-kills-navajos-in-their-homes-tribal-women-provide-lifeline.jpg?w=600?w=650").await.is_ok());
+       assert!(is_image_content_type(&client,
+                                     "https://twitter.com/BenjaminNorton/status/1259922424272957440?s=20"
+       )
+         .await.is_err()
+       );
+     });
+   }
+ 
+   #[test]
+   fn test_espeak() {
+     assert!(captcha_espeak_wav_base64("WxRt2l").is_ok())
+   }
+ 
+   // These helped with testing
+   // #[test]
+   // fn test_iframely() {
+   //   let res = fetch_iframely(client, "https://www.redspark.nu/?p=15341").await;
+   //   assert!(res.is_ok());
+   // }
+ 
+   // #[test]
+   // fn test_pictshare() {
+   //   let res = fetch_pictshare("https://upload.wikimedia.org/wikipedia/en/2/27/The_Mandalorian_logo.jpg");
+   //   assert!(res.is_ok());
+   //   let res_other = fetch_pictshare("https://upload.wikimedia.org/wikipedia/en/2/27/The_Mandalorian_logo.jpgaoeu");
+   //   assert!(res_other.is_err());
+   // }
+ }
diff --cc lemmy_api/src/site.rs
index e9a0d659,9db838ff..34bdd096
--- a/lemmy_api/src/site.rs
+++ b/lemmy_api/src/site.rs
@@@ -1,11 -1,7 +1,14 @@@
 -use crate::{get_user_from_jwt, get_user_from_jwt_opt, is_admin, version, Perform};
 +use crate::{
-   api::{get_user_from_jwt, get_user_from_jwt_opt, is_admin, linked_instances, Perform},
-   apub::fetcher::search_by_apub_id,
++  get_user_from_jwt,
++  get_user_from_jwt_opt,
++  is_admin,
++  linked_instances,
 +  version,
-   LemmyContext,
++  Perform,
 +};
  use actix_web::web::Data;
  use anyhow::Context;
+ use lemmy_apub::fetcher::search_by_apub_id;
  use lemmy_db::{
    category::*,
    comment_view::*,