8 use crate::site::FederatedInstances;
9 use itertools::Itertools;
10 use lemmy_db_schema::{
11 newtypes::{CommunityId, LocalUserId, PersonId, PostId},
15 email_verification::{EmailVerification, EmailVerificationForm},
16 password_reset_request::PasswordResetRequest,
17 person_block::PersonBlock,
18 post::{Post, PostRead, PostReadForm},
19 registration_application::RegistrationApplication,
23 traits::{ApubActor, Crud, Readable},
27 comment_view::CommentQueryBuilder,
28 local_user_view::{LocalUserSettingsView, LocalUserView},
30 use lemmy_db_views_actor::{
31 community_moderator_view::CommunityModeratorView,
32 community_person_ban_view::CommunityPersonBanView,
33 community_view::CommunityView,
38 settings::structs::{FederationConfig, Settings},
39 utils::generate_random_string,
45 pub async fn blocking<F, T>(pool: &DbPool, f: F) -> Result<T, LemmyError>
47 F: FnOnce(&diesel::PgConnection) -> T + Send + 'static,
50 let pool = pool.clone();
51 let blocking_span = tracing::info_span!("blocking operation");
52 let res = actix_web::web::block(move || {
53 let entered = blocking_span.enter();
54 let conn = pool.get()?;
57 Ok(res) as Result<T, LemmyError>
64 #[tracing::instrument(skip_all)]
65 pub async fn is_mod_or_admin(
68 community_id: CommunityId,
69 ) -> Result<(), LemmyError> {
70 let is_mod_or_admin = blocking(pool, move |conn| {
71 CommunityView::is_mod_or_admin(conn, person_id, community_id)
75 return Err(LemmyError::from_message("not_a_mod_or_admin"));
80 pub fn is_admin(local_user_view: &LocalUserView) -> Result<(), LemmyError> {
81 if !local_user_view.person.admin {
82 return Err(LemmyError::from_message("not_an_admin"));
87 #[tracing::instrument(skip_all)]
88 pub async fn get_post(post_id: PostId, pool: &DbPool) -> Result<Post, LemmyError> {
89 blocking(pool, move |conn| Post::read(conn, post_id))
91 .map_err(|e| LemmyError::from_error_message(e, "couldnt_find_post"))
94 #[tracing::instrument(skip_all)]
95 pub async fn mark_post_as_read(
99 ) -> Result<PostRead, LemmyError> {
100 let post_read_form = PostReadForm { post_id, person_id };
102 blocking(pool, move |conn| {
103 PostRead::mark_as_read(conn, &post_read_form)
106 .map_err(|e| LemmyError::from_error_message(e, "couldnt_mark_post_as_read"))
109 #[tracing::instrument(skip_all)]
110 pub async fn mark_post_as_unread(
114 ) -> Result<usize, LemmyError> {
115 let post_read_form = PostReadForm { post_id, person_id };
117 blocking(pool, move |conn| {
118 PostRead::mark_as_unread(conn, &post_read_form)
121 .map_err(|e| LemmyError::from_error_message(e, "couldnt_mark_post_as_read"))
124 #[tracing::instrument(skip_all)]
125 pub async fn get_local_user_view_from_jwt(
129 ) -> Result<LocalUserView, LemmyError> {
130 let claims = Claims::decode(jwt, &secret.jwt_secret)
131 .map_err(|e| e.with_message("not_logged_in"))?
133 let local_user_id = LocalUserId(claims.sub);
134 let local_user_view =
135 blocking(pool, move |conn| LocalUserView::read(conn, local_user_id)).await??;
136 // Check for a site ban
137 if local_user_view.person.is_banned() {
138 return Err(LemmyError::from_message("site_ban"));
141 // Check for user deletion
142 if local_user_view.person.deleted {
143 return Err(LemmyError::from_message("deleted"));
146 check_validator_time(&local_user_view.local_user.validator_time, &claims)?;
151 /// Checks if user's token was issued before user's password reset.
152 pub fn check_validator_time(
153 validator_time: &chrono::NaiveDateTime,
155 ) -> Result<(), LemmyError> {
156 let user_validation_time = validator_time.timestamp();
157 if user_validation_time > claims.iat {
158 Err(LemmyError::from_message("not_logged_in"))
164 #[tracing::instrument(skip_all)]
165 pub async fn get_local_user_view_from_jwt_opt(
166 jwt: Option<&Sensitive<String>>,
169 ) -> Result<Option<LocalUserView>, LemmyError> {
171 Some(jwt) => Ok(Some(get_local_user_view_from_jwt(jwt, pool, secret).await?)),
176 #[tracing::instrument(skip_all)]
177 pub async fn get_local_user_settings_view_from_jwt(
178 jwt: &Sensitive<String>,
181 ) -> Result<LocalUserSettingsView, LemmyError> {
182 let claims = Claims::decode(jwt.as_ref(), &secret.jwt_secret)
183 .map_err(|e| e.with_message("not_logged_in"))?
185 let local_user_id = LocalUserId(claims.sub);
186 let local_user_view = blocking(pool, move |conn| {
187 LocalUserSettingsView::read(conn, local_user_id)
190 // Check for a site ban
191 if local_user_view.person.is_banned() {
192 return Err(LemmyError::from_message("site_ban"));
195 check_validator_time(&local_user_view.local_user.validator_time, &claims)?;
200 #[tracing::instrument(skip_all)]
201 pub async fn get_local_user_settings_view_from_jwt_opt(
202 jwt: Option<&Sensitive<String>>,
205 ) -> Result<Option<LocalUserSettingsView>, LemmyError> {
207 Some(jwt) => Ok(Some(
208 get_local_user_settings_view_from_jwt(jwt, pool, secret).await?,
214 #[tracing::instrument(skip_all)]
215 pub async fn check_community_ban(
217 community_id: CommunityId,
219 ) -> Result<(), LemmyError> {
221 move |conn: &'_ _| CommunityPersonBanView::get(conn, person_id, community_id).is_ok();
222 if blocking(pool, is_banned).await? {
223 Err(LemmyError::from_message("community_ban"))
229 #[tracing::instrument(skip_all)]
230 pub async fn check_community_deleted_or_removed(
231 community_id: CommunityId,
233 ) -> Result<(), LemmyError> {
234 let community = blocking(pool, move |conn| Community::read(conn, community_id))
236 .map_err(|e| LemmyError::from_error_message(e, "couldnt_find_community"))?;
237 if community.deleted || community.removed {
238 Err(LemmyError::from_message("deleted"))
244 pub fn check_post_deleted_or_removed(post: &Post) -> Result<(), LemmyError> {
245 if post.deleted || post.removed {
246 Err(LemmyError::from_message("deleted"))
252 #[tracing::instrument(skip_all)]
253 pub async fn check_person_block(
255 potential_blocker_id: PersonId,
257 ) -> Result<(), LemmyError> {
258 let is_blocked = move |conn: &'_ _| PersonBlock::read(conn, potential_blocker_id, my_id).is_ok();
259 if blocking(pool, is_blocked).await? {
260 Err(LemmyError::from_message("person_block"))
266 #[tracing::instrument(skip_all)]
267 pub async fn check_downvotes_enabled(score: i16, pool: &DbPool) -> Result<(), LemmyError> {
269 let site = blocking(pool, Site::read_local_site).await??;
270 if !site.enable_downvotes {
271 return Err(LemmyError::from_message("downvotes_disabled"));
277 #[tracing::instrument(skip_all)]
278 pub async fn check_private_instance(
279 local_user_view: &Option<LocalUserView>,
281 ) -> Result<(), LemmyError> {
282 if local_user_view.is_none() {
283 let site = blocking(pool, Site::read_local_site).await?;
285 // The site might not be set up yet
286 if let Ok(site) = site {
287 if site.private_instance {
288 return Err(LemmyError::from_message("instance_is_private"));
295 #[tracing::instrument(skip_all)]
296 pub async fn build_federated_instances(
298 federation_config: &FederationConfig,
300 ) -> Result<Option<FederatedInstances>, LemmyError> {
301 let federation = federation_config.to_owned();
302 if federation.enabled {
303 let distinct_communities = blocking(pool, move |conn| {
304 Community::distinct_federated_communities(conn)
308 let allowed = federation.allowed_instances;
309 let blocked = federation.blocked_instances;
311 let mut linked = distinct_communities
313 .map(|actor_id| Ok(actor_id.host_str().unwrap_or("").to_string()))
314 .collect::<Result<Vec<String>, LemmyError>>()?;
316 if let Some(allowed) = allowed.as_ref() {
317 linked.extend_from_slice(allowed);
320 if let Some(blocked) = blocked.as_ref() {
321 linked.retain(|a| !blocked.contains(a) && !a.eq(hostname));
324 // Sort and remove dupes
325 linked.sort_unstable();
328 Ok(Some(FederatedInstances {
338 /// Checks the password length
339 pub fn password_length_check(pass: &str) -> Result<(), LemmyError> {
340 if !(10..=60).contains(&pass.len()) {
341 Err(LemmyError::from_message("invalid_password"))
347 /// Checks the site description length
348 pub fn site_description_length_check(description: &str) -> Result<(), LemmyError> {
349 if description.len() > 150 {
350 Err(LemmyError::from_message("site_description_length_overflow"))
356 /// Checks for a honeypot. If this field is filled, fail the rest of the function
357 pub fn honeypot_check(honeypot: &Option<String>) -> Result<(), LemmyError> {
358 if honeypot.is_some() {
359 Err(LemmyError::from_message("honeypot_fail"))
365 pub fn send_email_to_user(
366 local_user_view: &LocalUserView,
369 comment_content: &str,
372 if local_user_view.person.banned || !local_user_view.local_user.send_notifications_to_email {
376 if let Some(user_email) = &local_user_view.local_user.email {
377 let subject = &format!(
379 subject_text, settings.hostname, local_user_view.person.name,
382 "<h1>{}</h1><br><div>{} - {}</div><br><a href={}/inbox>inbox</a>",
384 local_user_view.person.name,
386 settings.get_protocol_and_hostname()
391 &local_user_view.person.name,
396 Err(e) => tracing::error!("{}", e),
401 pub async fn send_password_reset_email(
402 local_user_view: &LocalUserView,
405 ) -> Result<(), LemmyError> {
406 // Generate a random token
407 let token = generate_random_string();
410 let token2 = token.clone();
411 let local_user_id = local_user_view.local_user.id;
412 blocking(pool, move |conn| {
413 PasswordResetRequest::create_token(conn, local_user_id, &token2)
417 let email = &local_user_view.local_user.email.to_owned().expect("email");
418 let subject = &format!("Password reset for {}", local_user_view.person.name);
419 let protocol_and_hostname = settings.get_protocol_and_hostname();
420 let html = &format!("<h1>Password Reset Request for {}</h1><br><a href={}/password_change/{}>Click here to reset your password</a>", local_user_view.person.name, protocol_and_hostname, &token);
421 send_email(subject, email, &local_user_view.person.name, html, settings)
424 /// Send a verification email
425 pub async fn send_verification_email(
426 local_user_id: LocalUserId,
431 ) -> Result<(), LemmyError> {
432 let form = EmailVerificationForm {
434 email: new_email.to_string(),
435 verification_token: generate_random_string(),
437 let verify_link = format!(
438 "{}/verify_email/{}",
439 settings.get_protocol_and_hostname(),
440 &form.verification_token
442 blocking(pool, move |conn| EmailVerification::create(conn, &form)).await??;
444 let subject = format!("Verify your email address for {}", settings.hostname);
447 "Please click the link below to verify your email address ",
448 "for the account @{}@{}. Ignore this email if the account isn't yours.<br><br>",
449 "<a href=\"{}\">Verify your email</a>"
451 username, settings.hostname, verify_link
453 send_email(&subject, new_email, username, &body, settings)?;
458 pub fn send_email_verification_success(
459 local_user_view: &LocalUserView,
461 ) -> Result<(), LemmyError> {
462 let email = &local_user_view.local_user.email.to_owned().expect("email");
463 let subject = &format!("Email verified for {}", local_user_view.person.actor_id);
464 let html = "Your email has been verified.";
465 send_email(subject, email, &local_user_view.person.name, html, settings)
468 pub fn send_application_approved_email(
469 local_user_view: &LocalUserView,
471 ) -> Result<(), LemmyError> {
472 let email = &local_user_view.local_user.email.to_owned().expect("email");
473 let subject = &format!(
474 "Registration approved for {}",
475 local_user_view.person.actor_id
478 "Your registration application has been approved. Welcome to {}!",
481 send_email(subject, email, &local_user_view.person.name, html, settings)
484 pub async fn check_registration_application(
486 local_user_view: &LocalUserView,
488 ) -> Result<(), LemmyError> {
489 if site.require_application
490 && !local_user_view.local_user.accepted_application
491 && !local_user_view.person.admin
493 // Fetch the registration, see if its denied
494 let local_user_id = local_user_view.local_user.id;
495 let registration = blocking(pool, move |conn| {
496 RegistrationApplication::find_by_local_user_id(conn, local_user_id)
499 if registration.deny_reason.is_some() {
500 return Err(LemmyError::from_message("registration_denied"));
502 return Err(LemmyError::from_message("registration_application_pending"));
508 /// TODO this check should be removed after https://github.com/LemmyNet/lemmy/issues/868 is done.
509 pub async fn check_private_instance_and_federation_enabled(
512 ) -> Result<(), LemmyError> {
513 let site_opt = blocking(pool, Site::read_local_site).await?;
515 if let Ok(site) = site_opt {
516 if site.private_instance && settings.federation.enabled {
517 return Err(LemmyError::from_message(
518 "Cannot have both private instance and federation enabled.",
525 /// Resolve actor identifier (eg `!news@example.com`) from local database to avoid network requests.
526 /// This only works for local actors, and remote actors which were previously fetched (so it doesnt
527 /// trigger any new fetch).
528 #[tracing::instrument(skip_all)]
529 pub async fn resolve_actor_identifier<Actor>(
532 ) -> Result<Actor, LemmyError>
534 Actor: ApubActor + Send + 'static,
537 if identifier.contains('@') {
538 let (name, domain) = identifier
541 .expect("invalid query");
542 let name = name.to_string();
543 let domain = format!("{}://{}", Settings::get().get_protocol_string(), domain);
545 blocking(pool, move |conn| {
546 Actor::read_from_name_and_domain(conn, &name, &domain)
553 let identifier = identifier.to_string();
554 Ok(blocking(pool, move |conn| Actor::read_from_name(conn, &identifier)).await??)
558 pub async fn remove_user_data(banned_person_id: PersonId, pool: &DbPool) -> Result<(), LemmyError> {
560 blocking(pool, move |conn: &'_ _| {
561 Post::update_removed_for_creator(conn, banned_person_id, None, true)
566 // Remove all communities where they're the top mod
567 // for now, remove the communities manually
568 let first_mod_communities = blocking(pool, move |conn: &'_ _| {
569 CommunityModeratorView::get_community_first_mods(conn)
573 // Filter to only this banned users top communities
574 let banned_user_first_communities: Vec<CommunityModeratorView> = first_mod_communities
576 .filter(|fmc| fmc.moderator.id == banned_person_id)
579 for first_mod_community in banned_user_first_communities {
580 blocking(pool, move |conn: &'_ _| {
581 Community::update_removed(conn, first_mod_community.community.id, true)
587 blocking(pool, move |conn: &'_ _| {
588 Comment::update_removed_for_creator(conn, banned_person_id, true)
595 pub async fn remove_user_data_in_community(
596 community_id: CommunityId,
597 banned_person_id: PersonId,
599 ) -> Result<(), LemmyError> {
601 blocking(pool, move |conn| {
602 Post::update_removed_for_creator(conn, banned_person_id, Some(community_id), true)
607 // TODO Diesel doesn't allow updates with joins, so this has to be a loop
608 let comments = blocking(pool, move |conn| {
609 CommentQueryBuilder::create(conn)
610 .creator_id(banned_person_id)
611 .community_id(community_id)
612 .limit(std::i64::MAX)
617 for comment_view in &comments {
618 let comment_id = comment_view.comment.id;
619 blocking(pool, move |conn| {
620 Comment::update_removed(conn, comment_id, true)
628 pub fn check_image_has_local_domain(url: &Option<String>) -> Result<(), LemmyError> {
629 if let Some(url) = url {
630 let settings = Settings::get();
631 let url = Url::parse(url)?;
632 let domain = url.domain().expect("url has domain");
633 if domain != settings.hostname {
634 return Err(LemmyError::from_message("image_not_local"));