Adding temporary bans. Fixes #1423 (#1999)

* Adding temporary bans. Fixes #1423

* Adding ban_expires to person

* Fix clippy

* Removing ban_expires from federated fields.

* Trying to add expires to blockcommunity apub.

crates/api/src/community.rs

@@ -214,6 +214,7 @@ impl Perform for BanFromCommunity {
 
     let community_id = data.community_id;
     let banned_person_id = data.person_id;
+    let expires = data.expires.map(naive_from_unix);
 
     // Verify that only mods or admins can ban
     is_mod_or_admin(context.pool(), local_user_view.person.id, community_id).await?;
@@ -221,6 +222,7 @@ impl Perform for BanFromCommunity {
     let community_user_ban_form = CommunityPersonBanForm {
       community_id: data.community_id,
       person_id: data.person_id,
+      expires: Some(expires),
     };
 
     let community: ApubCommunity = blocking(context.pool(), move |conn: &'_ _| {
@@ -257,6 +259,7 @@ impl Perform for BanFromCommunity {
         &community,
         &banned_person,
         &local_user_view.person.clone().into(),
+        expires,
         context,
       )
       .await?;
@@ -304,9 +307,6 @@ impl Perform for BanFromCommunity {
     }
 
     // Mod tables
-    // TODO eventually do correct expires
-    let expires = data.expires.map(naive_from_unix);
-
     let form = ModBanFromCommunityForm {
       mod_person_id: local_user_view.person.id,
       other_person_id: data.person_id,

crates/api/src/local_user.rs

@@ -256,6 +256,7 @@ impl Perform for SaveUserSettings {
       shared_inbox_url: None,
       matrix_user_id,
       bot_account,
+      ban_expires: None,
     };
 
     blocking(context.pool(), move |conn| {
@@ -452,7 +453,9 @@ impl Perform for BanPerson {
 
     let ban = data.ban;
     let banned_person_id = data.person_id;
-    let ban_person = move |conn: &'_ _| Person::ban_person(conn, banned_person_id, ban);
+    let expires = data.expires.map(naive_from_unix);
+
+    let ban_person = move |conn: &'_ _| Person::ban_person(conn, banned_person_id, ban, expires);
     blocking(context.pool(), ban_person)
       .await?
       .map_err(LemmyError::from)
@@ -495,8 +498,6 @@ impl Perform for BanPerson {
     }
 
     // Mod tables
-    let expires = data.expires.map(naive_from_unix);
-
     let form = ModBanForm {
       mod_person_id: local_user_view.person.id,
       other_person_id: data.person_id,

crates/api_common/src/lib.rs

@@ -132,7 +132,7 @@ pub async fn get_local_user_view_from_jwt(
   let local_user_view =
     blocking(pool, move |conn| LocalUserView::read(conn, local_user_id)).await??;
   // Check for a site ban
-  if local_user_view.person.banned {
+  if local_user_view.person.is_banned() {
     return Err(LemmyError::from_message("site_ban"));
   }
 
@@ -187,7 +187,7 @@ pub async fn get_local_user_settings_view_from_jwt(
   })
   .await??;
   // Check for a site ban
-  if local_user_view.person.banned {
+  if local_user_view.person.is_banned() {
     return Err(LemmyError::from_message("site_ban"));
   }
 

crates/apub/assets/lemmy/activities/community/block_user.json

@@ -9,5 +9,6 @@
   ],
   "target": "http://enterprise.lemmy.ml/c/main",
   "type": "Block",
+  "expires": "2021-11-01T12:23:50.151874+00:00",
   "id": "http://enterprise.lemmy.ml/activities/block/5d42fffb-0903-4625-86d4-0b39bb344fc2"
 }

crates/apub/src/activities/community/block_user.rs

@@ -12,6 +12,7 @@ use crate::{
   protocol::activities::community::block_user::BlockUserFromCommunity,
 };
 use activitystreams_kinds::{activity::BlockType, public};
+use chrono::NaiveDateTime;
 use lemmy_api_common::blocking;
 use lemmy_apub_lib::{
   data::Data,
@@ -27,7 +28,7 @@ use lemmy_db_schema::{
   },
   traits::{Bannable, Followable},
 };
-use lemmy_utils::LemmyError;
+use lemmy_utils::{utils::convert_datetime, LemmyError};
 use lemmy_websocket::LemmyContext;
 
 impl BlockUserFromCommunity {
@@ -35,6 +36,7 @@ impl BlockUserFromCommunity {
     community: &ApubCommunity,
     target: &ApubPerson,
     actor: &ApubPerson,
+    expires: Option<NaiveDateTime>,
     context: &LemmyContext,
   ) -> Result<BlockUserFromCommunity, LemmyError> {
     Ok(BlockUserFromCommunity {
@@ -48,6 +50,7 @@ impl BlockUserFromCommunity {
         BlockType::Block,
         &context.settings().get_protocol_and_hostname(),
       )?,
+      expires: expires.map(convert_datetime),
       unparsed: Default::default(),
     })
   }
@@ -57,9 +60,10 @@ impl BlockUserFromCommunity {
     community: &ApubCommunity,
     target: &ApubPerson,
     actor: &ApubPerson,
+    expires: Option<NaiveDateTime>,
     context: &LemmyContext,
   ) -> Result<(), LemmyError> {
-    let block = BlockUserFromCommunity::new(community, target, actor, context)?;
+    let block = BlockUserFromCommunity::new(community, target, actor, expires, context)?;
     let block_id = block.id.clone();
 
     let activity = AnnouncableActivities::BlockUserFromCommunity(block);
@@ -101,6 +105,7 @@ impl ActivityHandler for BlockUserFromCommunity {
     let community_user_ban_form = CommunityPersonBanForm {
       community_id: community.id,
       person_id: blocked_user.id,
+      expires: Some(self.expires.map(|u| u.naive_local())),
     };
 
     blocking(context.pool(), move |conn: &'_ _| {

crates/apub/src/activities/community/undo_block_user.rs

@@ -36,7 +36,7 @@ impl UndoBlockUserFromCommunity {
     actor: &ApubPerson,
     context: &LemmyContext,
   ) -> Result<(), LemmyError> {
-    let block = BlockUserFromCommunity::new(community, target, actor, context)?;
+    let block = BlockUserFromCommunity::new(community, target, actor, None, context)?;
 
     let id = generate_activity_id(
       UndoType::Undo,
@@ -93,6 +93,7 @@ impl ActivityHandler for UndoBlockUserFromCommunity {
     let community_user_ban_form = CommunityPersonBanForm {
       community_id: community.id,
       person_id: blocked_user.id,
+      expires: None,
     };
 
     blocking(context.pool(), move |conn: &'_ _| {

crates/apub/src/objects/person.rs

@@ -149,6 +149,7 @@ impl ApubObject for ApubPerson {
       name: person.preferred_username,
       display_name: Some(person.name),
       banned: None,
+      ban_expires: None,
       deleted: None,
       avatar: Some(person.icon.map(|i| i.url.into())),
       banner: Some(person.image.map(|i| i.url.into())),

crates/apub/src/protocol/activities/community/block_user.rs

@@ -3,6 +3,7 @@ use crate::{
   protocol::Unparsed,
 };
 use activitystreams_kinds::activity::BlockType;
+use chrono::{DateTime, FixedOffset};
 use lemmy_apub_lib::object_id::ObjectId;
 use serde::{Deserialize, Serialize};
 use url::Url;
@@ -22,4 +23,5 @@ pub struct BlockUserFromCommunity {
   pub(crate) id: Url,
   #[serde(flatten)]
   pub(crate) unparsed: Unparsed,
+  pub(crate) expires: Option<DateTime<FixedOffset>>,
 }

crates/db_schema/src/impls/community.rs

@@ -225,6 +225,9 @@ impl Bannable for CommunityPersonBan {
     use crate::schema::community_person_ban::dsl::*;
     insert_into(community_person_ban)
       .values(community_person_ban_form)
+      .on_conflict((community_id, person_id))
+      .do_update()
+      .set(community_person_ban_form)
       .get_result::<Self>(conn)
   }
 
@@ -383,6 +386,7 @@ mod tests {
     let community_person_ban_form = CommunityPersonBanForm {
       community_id: inserted_community.id,
       person_id: inserted_person.id,
+      expires: None,
     };
 
     let inserted_community_person_ban =
@@ -393,6 +397,7 @@ mod tests {
       community_id: inserted_community.id,
       person_id: inserted_person.id,
       published: inserted_community_person_ban.published,
+      expires: None,
     };
 
     let read_community = Community::read(&conn, inserted_community.id).unwrap();

crates/db_schema/src/impls/person.rs

@@ -3,7 +3,7 @@ use crate::{
   naive_now,
   newtypes::{DbUrl, PersonId},
   schema::person::dsl::*,
-  source::person::{Person, PersonForm},
+  source::person::{Person, PersonForm, PersonSafe},
   traits::Crud,
 };
 use diesel::{dsl::*, result::Error, ExpressionMethods, PgConnection, QueryDsl, RunQueryDsl};
@@ -30,6 +30,7 @@ mod safe_type {
     matrix_user_id,
     admin,
     bot_account,
+    ban_expires,
   );
 
   impl ToSafe for Person {
@@ -53,6 +54,7 @@ mod safe_type {
         matrix_user_id,
         admin,
         bot_account,
+        ban_expires,
       )
     }
   }
@@ -79,6 +81,7 @@ mod safe_type_alias_1 {
     matrix_user_id,
     admin,
     bot_account,
+    ban_expires,
   );
 
   impl ToSafe for PersonAlias1 {
@@ -102,6 +105,7 @@ mod safe_type_alias_1 {
         matrix_user_id,
         admin,
         bot_account,
+        ban_expires,
       )
     }
   }
@@ -128,6 +132,7 @@ mod safe_type_alias_2 {
     matrix_user_id,
     admin,
     bot_account,
+    ban_expires,
   );
 
   impl ToSafe for PersonAlias2 {
@@ -151,6 +156,7 @@ mod safe_type_alias_2 {
         matrix_user_id,
         admin,
         bot_account,
+        ban_expires,
       )
     }
   }
@@ -179,9 +185,14 @@ impl Crud for Person {
 }
 
 impl Person {
-  pub fn ban_person(conn: &PgConnection, person_id: PersonId, ban: bool) -> Result<Self, Error> {
+  pub fn ban_person(
+    conn: &PgConnection,
+    person_id: PersonId,
+    ban: bool,
+    expires: Option<chrono::NaiveDateTime>,
+  ) -> Result<Self, Error> {
     diesel::update(person.find(person_id))
-      .set(banned.eq(ban))
+      .set((banned.eq(ban), ban_expires.eq(expires)))
       .get_result::<Self>(conn)
   }
 
@@ -259,6 +270,24 @@ impl Person {
       .set(deleted.eq(new_deleted))
       .get_result::<Self>(conn)
   }
+
+  pub fn is_banned(&self) -> bool {
+    is_banned(self.banned, self.ban_expires)
+  }
+}
+
+impl PersonSafe {
+  pub fn is_banned(&self) -> bool {
+    is_banned(self.banned, self.ban_expires)
+  }
+}
+
+fn is_banned(banned_: bool, expires: Option<chrono::NaiveDateTime>) -> bool {
+  if let Some(expires) = expires {
+    banned_ && expires.gt(&naive_now())
+  } else {
+    banned_
+  }
 }
 
 #[cfg(test)]
@@ -298,6 +327,7 @@ mod tests {
       inbox_url: inserted_person.inbox_url.to_owned(),
       shared_inbox_url: None,
       matrix_user_id: None,
+      ban_expires: None,
     };
 
     let read_person = Person::read(&conn, inserted_person.id).unwrap();

crates/db_schema/src/schema.rs

@@ -136,6 +136,7 @@ table! {
         community_id -> Int4,
         person_id -> Int4,
         published -> Timestamp,
+        expires -> Nullable<Timestamp>,
     }
 }
 
@@ -304,6 +305,7 @@ table! {
         matrix_user_id -> Nullable<Text>,
         admin -> Bool,
         bot_account -> Bool,
+        ban_expires -> Nullable<Timestamp>,
     }
 }
 
@@ -529,6 +531,7 @@ table! {
         matrix_user_id -> Nullable<Text>,
         admin -> Bool,
         bot_account -> Bool,
+        ban_expires -> Nullable<Timestamp>,
     }
 }
 
@@ -554,6 +557,7 @@ table! {
         matrix_user_id -> Nullable<Text>,
         admin -> Bool,
         bot_account -> Bool,
+        ban_expires -> Nullable<Timestamp>,
     }
 }
 

crates/db_schema/src/source/community.rs

@@ -95,6 +95,7 @@ pub struct CommunityPersonBan {
   pub community_id: CommunityId,
   pub person_id: PersonId,
   pub published: chrono::NaiveDateTime,
+  pub expires: Option<chrono::NaiveDateTime>,
 }
 
 #[derive(Insertable, AsChangeset, Clone)]
@@ -102,6 +103,7 @@ pub struct CommunityPersonBan {
 pub struct CommunityPersonBanForm {
   pub community_id: CommunityId,
   pub person_id: PersonId,
+  pub expires: Option<Option<chrono::NaiveDateTime>>,
 }
 
 #[derive(Identifiable, Queryable, Associations, PartialEq, Debug)]

crates/db_schema/src/source/person.rs

@@ -27,6 +27,7 @@ pub struct Person {
   pub matrix_user_id: Option<String>,
   pub admin: bool,
   pub bot_account: bool,
+  pub ban_expires: Option<chrono::NaiveDateTime>,
 }
 
 /// A safe representation of person, without the sensitive info
@@ -50,6 +51,7 @@ pub struct PersonSafe {
   pub matrix_user_id: Option<String>,
   pub admin: bool,
   pub bot_account: bool,
+  pub ban_expires: Option<chrono::NaiveDateTime>,
 }
 
 #[derive(Clone, Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize)]
@@ -75,6 +77,7 @@ pub struct PersonAlias1 {
   pub matrix_user_id: Option<String>,
   pub admin: bool,
   pub bot_account: bool,
+  pub ban_expires: Option<chrono::NaiveDateTime>,
 }
 
 #[derive(Clone, Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize)]
@@ -97,6 +100,7 @@ pub struct PersonSafeAlias1 {
   pub matrix_user_id: Option<String>,
   pub admin: bool,
   pub bot_account: bool,
+  pub ban_expires: Option<chrono::NaiveDateTime>,
 }
 
 #[derive(Clone, Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize)]
@@ -122,6 +126,7 @@ pub struct PersonAlias2 {
   pub matrix_user_id: Option<String>,
   pub admin: bool,
   pub bot_account: bool,
+  pub ban_expires: Option<chrono::NaiveDateTime>,
 }
 
 #[derive(Clone, Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize)]
@@ -144,6 +149,7 @@ pub struct PersonSafeAlias2 {
   pub matrix_user_id: Option<String>,
   pub admin: bool,
   pub bot_account: bool,
+  pub ban_expires: Option<chrono::NaiveDateTime>,
 }
 
 #[derive(Insertable, AsChangeset, Clone, Default)]
@@ -168,4 +174,5 @@ pub struct PersonForm {
   pub matrix_user_id: Option<Option<String>>,
   pub admin: Option<bool>,
   pub bot_account: Option<bool>,
+  pub ban_expires: Option<Option<chrono::NaiveDateTime>>,
 }

crates/db_views/src/comment_report_view.rs

@@ -1,4 +1,4 @@
-use diesel::{result::Error, *};
+use diesel::{dsl::*, result::Error, *};
 use lemmy_db_schema::{
   aggregates::comment_aggregates::CommentAggregates,
   limit_and_offset,
@@ -88,7 +88,12 @@ impl CommentReportView {
         community_person_ban::table.on(
           community::id
             .eq(community_person_ban::community_id)
-            .and(community_person_ban::person_id.eq(comment::creator_id)),
+            .and(community_person_ban::person_id.eq(comment::creator_id))
+            .and(
+              community_person_ban::expires
+                .is_null()
+                .or(community_person_ban::expires.gt(now)),
+            ),
         ),
       )
       .left_join(
@@ -229,7 +234,12 @@ impl<'a> CommentReportQueryBuilder<'a> {
         community_person_ban::table.on(
           community::id
             .eq(community_person_ban::community_id)
-            .and(community_person_ban::person_id.eq(comment::creator_id)),
+            .and(community_person_ban::person_id.eq(comment::creator_id))
+            .and(
+              community_person_ban::expires
+                .is_null()
+                .or(community_person_ban::expires.gt(now)),
+            ),
         ),
       )
       .left_join(
@@ -444,6 +454,7 @@ mod tests {
         inbox_url: inserted_jessica.inbox_url.to_owned(),
         shared_inbox_url: None,
         matrix_user_id: None,
+        ban_expires: None,
       },
       comment_creator: PersonSafeAlias1 {
         id: inserted_timmy.id,
@@ -463,6 +474,7 @@ mod tests {
         inbox_url: inserted_timmy.inbox_url.to_owned(),
         shared_inbox_url: None,
         matrix_user_id: None,
+        ban_expires: None,
       },
       creator_banned_from_community: false,
       counts: CommentAggregates {
@@ -499,6 +511,7 @@ mod tests {
       inbox_url: inserted_sara.inbox_url.to_owned(),
       shared_inbox_url: None,
       matrix_user_id: None,
+      ban_expires: None,
     };
 
     // Do a batch read of timmys reports
@@ -554,6 +567,7 @@ mod tests {
       inbox_url: inserted_timmy.inbox_url.to_owned(),
       shared_inbox_url: None,
       matrix_user_id: None,
+      ban_expires: None,
     });
 
     assert_eq!(

crates/db_views/src/comment_view.rs

@@ -1,4 +1,4 @@
-use diesel::{result::Error, *};
+use diesel::{dsl::*, result::Error, *};
 use lemmy_db_schema::{
   aggregates::comment_aggregates::CommentAggregates,
   functions::hot_rank,
@@ -98,7 +98,12 @@ impl CommentView {
         community_person_ban::table.on(
           community::id
             .eq(community_person_ban::community_id)
-            .and(community_person_ban::person_id.eq(comment::creator_id)),
+            .and(community_person_ban::person_id.eq(comment::creator_id))
+            .and(
+              community_person_ban::expires
+                .is_null()
+                .or(community_person_ban::expires.gt(now)),
+            ),
         ),
       )
       .left_join(
@@ -345,7 +350,12 @@ impl<'a> CommentQueryBuilder<'a> {
         community_person_ban::table.on(
           community::id
             .eq(community_person_ban::community_id)
-            .and(community_person_ban::person_id.eq(comment::creator_id)),
+            .and(community_person_ban::person_id.eq(comment::creator_id))
+            .and(
+              community_person_ban::expires
+                .is_null()
+                .or(community_person_ban::expires.gt(now)),
+            ),
         ),
       )
       .left_join(
@@ -646,6 +656,7 @@ mod tests {
         inbox_url: inserted_person.inbox_url.to_owned(),
         shared_inbox_url: None,
         matrix_user_id: None,
+        ban_expires: None,
       },
       recipient: None,
       post: Post {

crates/db_views/src/post_report_view.rs

@@ -1,4 +1,4 @@
-use diesel::{result::Error, *};
+use diesel::{dsl::*, result::Error, *};
 use lemmy_db_schema::{
   aggregates::post_aggregates::PostAggregates,
   limit_and_offset,
@@ -79,7 +79,12 @@ impl PostReportView {
         community_person_ban::table.on(
           post::community_id
             .eq(community_person_ban::community_id)
-            .and(community_person_ban::person_id.eq(post::creator_id)),
+            .and(community_person_ban::person_id.eq(post::creator_id))
+            .and(
+              community_person_ban::expires
+                .is_null()
+                .or(community_person_ban::expires.gt(now)),
+            ),
         ),
       )
       .left_join(
@@ -209,7 +214,12 @@ impl<'a> PostReportQueryBuilder<'a> {
         community_person_ban::table.on(
           post::community_id
             .eq(community_person_ban::community_id)
-            .and(community_person_ban::person_id.eq(post::creator_id)),
+            .and(community_person_ban::person_id.eq(post::creator_id))
+            .and(
+              community_person_ban::expires
+                .is_null()
+                .or(community_person_ban::expires.gt(now)),
+            ),
         ),
       )
       .left_join(
@@ -422,6 +432,7 @@ mod tests {
         inbox_url: inserted_jessica.inbox_url.to_owned(),
         shared_inbox_url: None,
         matrix_user_id: None,
+        ban_expires: None,
       },
       post_creator: PersonSafeAlias1 {
         id: inserted_timmy.id,
@@ -441,6 +452,7 @@ mod tests {
         inbox_url: inserted_timmy.inbox_url.to_owned(),
         shared_inbox_url: None,
         matrix_user_id: None,
+        ban_expires: None,
       },
       creator_banned_from_community: false,
       my_vote: None,
@@ -482,6 +494,7 @@ mod tests {
       inbox_url: inserted_sara.inbox_url.to_owned(),
       shared_inbox_url: None,
       matrix_user_id: None,
+      ban_expires: None,
     };
 
     // Do a batch read of timmys reports
@@ -535,6 +548,7 @@ mod tests {
       inbox_url: inserted_timmy.inbox_url.to_owned(),
       shared_inbox_url: None,
       matrix_user_id: None,
+      ban_expires: None,
     });
 
     assert_eq!(

crates/db_views/src/post_view.rs

@@ -1,4 +1,4 @@
-use diesel::{pg::Pg, result::Error, *};
+use diesel::{dsl::*, pg::Pg, result::Error, *};
 use lemmy_db_schema::{
   aggregates::post_aggregates::PostAggregates,
   functions::hot_rank,
@@ -86,7 +86,12 @@ impl PostView {
         community_person_ban::table.on(
           post::community_id
             .eq(community_person_ban::community_id)
-            .and(community_person_ban::person_id.eq(post::creator_id)),
+            .and(community_person_ban::person_id.eq(post::creator_id))
+            .and(
+              community_person_ban::expires
+                .is_null()
+                .or(community_person_ban::expires.gt(now)),
+            ),
         ),
       )
       .inner_join(post_aggregates::table)
@@ -284,7 +289,12 @@ impl<'a> PostQueryBuilder<'a> {
         community_person_ban::table.on(
           post::community_id
             .eq(community_person_ban::community_id)
-            .and(community_person_ban::person_id.eq(post::creator_id)),
+            .and(community_person_ban::person_id.eq(post::creator_id))
+            .and(
+              community_person_ban::expires
+                .is_null()
+                .or(community_person_ban::expires.gt(now)),
+            ),
         ),
       )
       .inner_join(post_aggregates::table)
@@ -653,6 +663,7 @@ mod tests {
         inbox_url: inserted_person.inbox_url.to_owned(),
         shared_inbox_url: None,
         matrix_user_id: None,
+        ban_expires: None,
       },
       creator_banned_from_community: false,
       community: CommunitySafe {

crates/db_views/src/registration_application_view.rs

@@ -290,6 +290,7 @@ mod tests {
         actor_id: inserted_sara_person.actor_id.to_owned(),
         local: true,
         banned: false,
+        ban_expires: None,
         deleted: false,
         admin: false,
         bot_account: false,
@@ -358,6 +359,7 @@ mod tests {
       actor_id: inserted_timmy_person.actor_id.to_owned(),
       local: true,
       banned: false,
+      ban_expires: None,
       deleted: false,
       admin: true,
       bot_account: false,

crates/db_views_actor/src/community_person_ban_view.rs

@@ -1,4 +1,4 @@
-use diesel::{result::Error, *};
+use diesel::{dsl::*, result::Error, *};
 use lemmy_db_schema::{
   newtypes::{CommunityId, PersonId},
   schema::{community, community_person_ban, person},
@@ -31,6 +31,11 @@ impl CommunityPersonBanView {
       ))
       .filter(community_person_ban::community_id.eq(from_community_id))
       .filter(community_person_ban::person_id.eq(from_person_id))
+      .filter(
+        community_person_ban::expires
+          .is_null()
+          .or(community_person_ban::expires.gt(now)),
+      )
       .order_by(community_person_ban::published)
       .first::<(CommunitySafe, PersonSafe)>(conn)?;
 

crates/db_views_actor/src/person_mention_view.rs

@@ -1,4 +1,4 @@
-use diesel::{result::Error, *};
+use diesel::{dsl::*, result::Error, *};
 use lemmy_db_schema::{
   aggregates::comment_aggregates::CommentAggregates,
   functions::hot_rank,
@@ -96,7 +96,12 @@ impl PersonMentionView {
         community_person_ban::table.on(
           community::id
             .eq(community_person_ban::community_id)
-            .and(community_person_ban::person_id.eq(comment::creator_id)),
+            .and(community_person_ban::person_id.eq(comment::creator_id))
+            .and(
+              community_person_ban::expires
+                .is_null()
+                .or(community_person_ban::expires.gt(now)),
+            ),
         ),
       )
       .left_join(
@@ -241,7 +246,12 @@ impl<'a> PersonMentionQueryBuilder<'a> {
         community_person_ban::table.on(
           community::id
             .eq(community_person_ban::community_id)
-            .and(community_person_ban::person_id.eq(comment::creator_id)),
+            .and(community_person_ban::person_id.eq(comment::creator_id))
+            .and(
+              community_person_ban::expires
+                .is_null()
+                .or(community_person_ban::expires.gt(now)),
+            ),
         ),
       )
       .left_join(

crates/db_views_actor/src/person_view.rs

@@ -44,7 +44,13 @@ impl PersonViewSafe {
     let banned = person::table
       .inner_join(person_aggregates::table)
       .select((Person::safe_columns_tuple(), person_aggregates::all_columns))
-      .filter(person::banned.eq(true))
+      .filter(
+        person::banned.eq(true).and(
+          person::ban_expires
+            .is_null()
+            .or(person::ban_expires.gt(now)),
+        ),
+      )
       .load::<PersonViewSafeTuple>(conn)?;
 
     Ok(Self::from_tuple_to_vec(banned))

migrations/2021-12-14-181537_add_temporary_bans/down.sql

@@ -0,0 +1,7 @@
+drop view person_alias_1, person_alias_2;
+
+alter table person drop column ban_expires;
+alter table community_person_ban drop column expires;
+
+create view person_alias_1 as select * from person;
+create view person_alias_2 as select * from person;

migrations/2021-12-14-181537_add_temporary_bans/up.sql

@@ -0,0 +1,8 @@
+-- Add ban_expires to person, community_person_ban
+alter table person add column ban_expires timestamp;
+alter table community_person_ban add column expires timestamp;
+
+drop view person_alias_1, person_alias_2;
+create view person_alias_1 as select * from person;
+create view person_alias_2 as select * from person;
+