crates/api_common/src/utils.rs

   1 use crate::{request::purge_image_from_pictrs, sensitive::Sensitive, site::FederatedInstances};
   2 use anyhow::Context;
   3 use chrono::NaiveDateTime;
   4 use lemmy_db_schema::{
   5   impls::person::is_banned,
   6   newtypes::{CommunityId, DbUrl, LocalUserId, PersonId, PostId},
   7   source::{
   8     comment::{Comment, CommentUpdateForm},
   9     community::{Community, CommunityUpdateForm},
  10     email_verification::{EmailVerification, EmailVerificationForm},
  11     instance::Instance,
  12     local_site::{LocalSite, RegistrationMode},
  13     local_site_rate_limit::LocalSiteRateLimit,
  14     password_reset_request::PasswordResetRequest,
  15     person::{Person, PersonUpdateForm},
  16     person_block::PersonBlock,
  17     post::{Post, PostRead, PostReadForm},
  18     registration_application::RegistrationApplication,
  19     secret::Secret,
  20   },
  21   traits::{Crud, Readable},
  22   utils::DbPool,
  23   ListingType,
  24 };
  25 use lemmy_db_views::{
  26   comment_view::CommentQuery,
  27   structs::{LocalUserSettingsView, LocalUserView},
  28 };
  29 use lemmy_db_views_actor::structs::{
  30   CommunityModeratorView,
  31   CommunityPersonBanView,
  32   CommunityView,
  33 };
  34 use lemmy_utils::{
  35   claims::Claims,
  36   email::{send_email, translations::Lang},
  37   error::LemmyError,
  38   location_info,
  39   rate_limit::RateLimitConfig,
  40   settings::structs::Settings,
  41   utils::{build_slur_regex, generate_random_string},
  42 };
  43 use regex::Regex;
  44 use reqwest_middleware::ClientWithMiddleware;
  45 use rosetta_i18n::{Language, LanguageId};
  46 use std::str::FromStr;
  47 use tracing::warn;
  48 use url::{ParseError, Url};
  49
  50 #[tracing::instrument(skip_all)]
  51 pub async fn is_mod_or_admin(
  52   pool: &DbPool,
  53   person_id: PersonId,
  54   community_id: CommunityId,
  55 ) -> Result<(), LemmyError> {
  56   let is_mod_or_admin = CommunityView::is_mod_or_admin(pool, person_id, community_id).await?;
  57   if !is_mod_or_admin {
  58     return Err(LemmyError::from_message("not_a_mod_or_admin"));
  59   }
  60   Ok(())
  61 }
  62
  63 pub fn is_admin(local_user_view: &LocalUserView) -> Result<(), LemmyError> {
  64   if !local_user_view.person.admin {
  65     return Err(LemmyError::from_message("not_an_admin"));
  66   }
  67   Ok(())
  68 }
  69
  70 #[tracing::instrument(skip_all)]
  71 pub async fn get_post(post_id: PostId, pool: &DbPool) -> Result<Post, LemmyError> {
  72   Post::read(pool, post_id)
  73     .await
  74     .map_err(|e| LemmyError::from_error_message(e, "couldnt_find_post"))
  75 }
  76
  77 #[tracing::instrument(skip_all)]
  78 pub async fn mark_post_as_read(
  79   person_id: PersonId,
  80   post_id: PostId,
  81   pool: &DbPool,
  82 ) -> Result<PostRead, LemmyError> {
  83   let post_read_form = PostReadForm { post_id, person_id };
  84
  85   PostRead::mark_as_read(pool, &post_read_form)
  86     .await
  87     .map_err(|e| LemmyError::from_error_message(e, "couldnt_mark_post_as_read"))
  88 }
  89
  90 #[tracing::instrument(skip_all)]
  91 pub async fn mark_post_as_unread(
  92   person_id: PersonId,
  93   post_id: PostId,
  94   pool: &DbPool,
  95 ) -> Result<usize, LemmyError> {
  96   let post_read_form = PostReadForm { post_id, person_id };
  97
  98   PostRead::mark_as_unread(pool, &post_read_form)
  99     .await
 100     .map_err(|e| LemmyError::from_error_message(e, "couldnt_mark_post_as_read"))
 101 }
 102
 103 #[tracing::instrument(skip_all)]
 104 pub async fn get_local_user_view_from_jwt(
 105   jwt: &str,
 106   pool: &DbPool,
 107   secret: &Secret,
 108 ) -> Result<LocalUserView, LemmyError> {
 109   let claims = Claims::decode(jwt, &secret.jwt_secret)
 110     .map_err(|e| e.with_message("not_logged_in"))?
 111     .claims;
 112   let local_user_id = LocalUserId(claims.sub);
 113   let local_user_view = LocalUserView::read(pool, local_user_id).await?;
 114   check_user_valid(
 115     local_user_view.person.banned,
 116     local_user_view.person.ban_expires,
 117     local_user_view.person.deleted,
 118   )?;
 119
 120   check_validator_time(&local_user_view.local_user.validator_time, &claims)?;
 121
 122   Ok(local_user_view)
 123 }
 124
 125 /// Checks if user's token was issued before user's password reset.
 126 pub fn check_validator_time(
 127   validator_time: &NaiveDateTime,
 128   claims: &Claims,
 129 ) -> Result<(), LemmyError> {
 130   let user_validation_time = validator_time.timestamp();
 131   if user_validation_time > claims.iat {
 132     Err(LemmyError::from_message("not_logged_in"))
 133   } else {
 134     Ok(())
 135   }
 136 }
 137
 138 #[tracing::instrument(skip_all)]
 139 pub async fn get_local_user_view_from_jwt_opt(
 140   jwt: Option<&Sensitive<String>>,
 141   pool: &DbPool,
 142   secret: &Secret,
 143 ) -> Result<Option<LocalUserView>, LemmyError> {
 144   match jwt {
 145     Some(jwt) => Ok(Some(get_local_user_view_from_jwt(jwt, pool, secret).await?)),
 146     None => Ok(None),
 147   }
 148 }
 149
 150 #[tracing::instrument(skip_all)]
 151 pub async fn get_local_user_settings_view_from_jwt_opt(
 152   jwt: Option<&Sensitive<String>>,
 153   pool: &DbPool,
 154   secret: &Secret,
 155 ) -> Result<Option<LocalUserSettingsView>, LemmyError> {
 156   match jwt {
 157     Some(jwt) => {
 158       let claims = Claims::decode(jwt.as_ref(), &secret.jwt_secret)
 159         .map_err(|e| e.with_message("not_logged_in"))?
 160         .claims;
 161       let local_user_id = LocalUserId(claims.sub);
 162       let local_user_view = LocalUserSettingsView::read(pool, local_user_id).await?;
 163       check_user_valid(
 164         local_user_view.person.banned,
 165         local_user_view.person.ban_expires,
 166         local_user_view.person.deleted,
 167       )?;
 168
 169       check_validator_time(&local_user_view.local_user.validator_time, &claims)?;
 170
 171       Ok(Some(local_user_view))
 172     }
 173     None => Ok(None),
 174   }
 175 }
 176 pub fn check_user_valid(
 177   banned: bool,
 178   ban_expires: Option<NaiveDateTime>,
 179   deleted: bool,
 180 ) -> Result<(), LemmyError> {
 181   // Check for a site ban
 182   if is_banned(banned, ban_expires) {
 183     return Err(LemmyError::from_message("site_ban"));
 184   }
 185
 186   // check for account deletion
 187   if deleted {
 188     return Err(LemmyError::from_message("deleted"));
 189   }
 190
 191   Ok(())
 192 }
 193
 194 #[tracing::instrument(skip_all)]
 195 pub async fn check_community_ban(
 196   person_id: PersonId,
 197   community_id: CommunityId,
 198   pool: &DbPool,
 199 ) -> Result<(), LemmyError> {
 200   let is_banned = CommunityPersonBanView::get(pool, person_id, community_id)
 201     .await
 202     .is_ok();
 203   if is_banned {
 204     Err(LemmyError::from_message("community_ban"))
 205   } else {
 206     Ok(())
 207   }
 208 }
 209
 210 #[tracing::instrument(skip_all)]
 211 pub async fn check_community_deleted_or_removed(
 212   community_id: CommunityId,
 213   pool: &DbPool,
 214 ) -> Result<(), LemmyError> {
 215   let community = Community::read(pool, community_id)
 216     .await
 217     .map_err(|e| LemmyError::from_error_message(e, "couldnt_find_community"))?;
 218   if community.deleted || community.removed {
 219     Err(LemmyError::from_message("deleted"))
 220   } else {
 221     Ok(())
 222   }
 223 }
 224
 225 pub fn check_post_deleted_or_removed(post: &Post) -> Result<(), LemmyError> {
 226   if post.deleted || post.removed {
 227     Err(LemmyError::from_message("deleted"))
 228   } else {
 229     Ok(())
 230   }
 231 }
 232
 233 #[tracing::instrument(skip_all)]
 234 pub async fn check_person_block(
 235   my_id: PersonId,
 236   potential_blocker_id: PersonId,
 237   pool: &DbPool,
 238 ) -> Result<(), LemmyError> {
 239   let is_blocked = PersonBlock::read(pool, potential_blocker_id, my_id)
 240     .await
 241     .is_ok();
 242   if is_blocked {
 243     Err(LemmyError::from_message("person_block"))
 244   } else {
 245     Ok(())
 246   }
 247 }
 248
 249 #[tracing::instrument(skip_all)]
 250 pub fn check_downvotes_enabled(score: i16, local_site: &LocalSite) -> Result<(), LemmyError> {
 251   if score == -1 && !local_site.enable_downvotes {
 252     return Err(LemmyError::from_message("downvotes_disabled"));
 253   }
 254   Ok(())
 255 }
 256
 257 #[tracing::instrument(skip_all)]
 258 pub fn check_private_instance(
 259   local_user_view: &Option<LocalUserView>,
 260   local_site: &LocalSite,
 261 ) -> Result<(), LemmyError> {
 262   if local_user_view.is_none() && local_site.private_instance {
 263     return Err(LemmyError::from_message("instance_is_private"));
 264   }
 265   Ok(())
 266 }
 267
 268 #[tracing::instrument(skip_all)]
 269 pub async fn build_federated_instances(
 270   local_site: &LocalSite,
 271   pool: &DbPool,
 272 ) -> Result<Option<FederatedInstances>, LemmyError> {
 273   if local_site.federation_enabled {
 274     // TODO I hate that this requires 3 queries
 275     let linked = Instance::linked(pool).await?;
 276     let allowed = Instance::allowlist(pool).await?;
 277     let blocked = Instance::blocklist(pool).await?;
 278
 279     // These can return empty vectors, so convert them to options
 280     let allowed = (!allowed.is_empty()).then_some(allowed);
 281     let blocked = (!blocked.is_empty()).then_some(blocked);
 282
 283     Ok(Some(FederatedInstances {
 284       linked,
 285       allowed,
 286       blocked,
 287     }))
 288   } else {
 289     Ok(None)
 290   }
 291 }
 292
 293 /// Checks the password length
 294 pub fn password_length_check(pass: &str) -> Result<(), LemmyError> {
 295   if !(10..=60).contains(&pass.chars().count()) {
 296     Err(LemmyError::from_message("invalid_password"))
 297   } else {
 298     Ok(())
 299   }
 300 }
 301
 302 /// Checks the site description length
 303 pub fn site_description_length_check(description: &str) -> Result<(), LemmyError> {
 304   if description.len() > 150 {
 305     Err(LemmyError::from_message("site_description_length_overflow"))
 306   } else {
 307     Ok(())
 308   }
 309 }
 310
 311 /// Checks for a honeypot. If this field is filled, fail the rest of the function
 312 pub fn honeypot_check(honeypot: &Option<String>) -> Result<(), LemmyError> {
 313   if honeypot.is_some() && honeypot != &Some(String::new()) {
 314     Err(LemmyError::from_message("honeypot_fail"))
 315   } else {
 316     Ok(())
 317   }
 318 }
 319
 320 pub fn send_email_to_user(
 321   local_user_view: &LocalUserView,
 322   subject: &str,
 323   body: &str,
 324   settings: &Settings,
 325 ) {
 326   if local_user_view.person.banned || !local_user_view.local_user.send_notifications_to_email {
 327     return;
 328   }
 329
 330   if let Some(user_email) = &local_user_view.local_user.email {
 331     match send_email(
 332       subject,
 333       user_email,
 334       &local_user_view.person.name,
 335       body,
 336       settings,
 337     ) {
 338       Ok(_o) => _o,
 339       Err(e) => warn!("{}", e),
 340     };
 341   }
 342 }
 343
 344 pub async fn send_password_reset_email(
 345   user: &LocalUserView,
 346   pool: &DbPool,
 347   settings: &Settings,
 348 ) -> Result<(), LemmyError> {
 349   // Generate a random token
 350   let token = generate_random_string();
 351
 352   // Insert the row
 353   let token2 = token.clone();
 354   let local_user_id = user.local_user.id;
 355   PasswordResetRequest::create_token(pool, local_user_id, &token2).await?;
 356
 357   let email = &user.local_user.email.clone().expect("email");
 358   let lang = get_interface_language(user);
 359   let subject = &lang.password_reset_subject(&user.person.name);
 360   let protocol_and_hostname = settings.get_protocol_and_hostname();
 361   let reset_link = format!("{}/password_change/{}", protocol_and_hostname, &token);
 362   let body = &lang.password_reset_body(reset_link, &user.person.name);
 363   send_email(subject, email, &user.person.name, body, settings)
 364 }
 365
 366 /// Send a verification email
 367 pub async fn send_verification_email(
 368   user: &LocalUserView,
 369   new_email: &str,
 370   pool: &DbPool,
 371   settings: &Settings,
 372 ) -> Result<(), LemmyError> {
 373   let form = EmailVerificationForm {
 374     local_user_id: user.local_user.id,
 375     email: new_email.to_string(),
 376     verification_token: generate_random_string(),
 377   };
 378   let verify_link = format!(
 379     "{}/verify_email/{}",
 380     settings.get_protocol_and_hostname(),
 381     &form.verification_token
 382   );
 383   EmailVerification::create(pool, &form).await?;
 384
 385   let lang = get_interface_language(user);
 386   let subject = lang.verify_email_subject(&settings.hostname);
 387   let body = lang.verify_email_body(&settings.hostname, &user.person.name, verify_link);
 388   send_email(&subject, new_email, &user.person.name, &body, settings)?;
 389
 390   Ok(())
 391 }
 392
 393 pub fn send_email_verification_success(
 394   user: &LocalUserView,
 395   settings: &Settings,
 396 ) -> Result<(), LemmyError> {
 397   let email = &user.local_user.email.clone().expect("email");
 398   let lang = get_interface_language(user);
 399   let subject = &lang.email_verified_subject(&user.person.actor_id);
 400   let body = &lang.email_verified_body();
 401   send_email(subject, email, &user.person.name, body, settings)
 402 }
 403
 404 pub fn get_interface_language(user: &LocalUserView) -> Lang {
 405   lang_str_to_lang(&user.local_user.interface_language)
 406 }
 407
 408 pub fn get_interface_language_from_settings(user: &LocalUserSettingsView) -> Lang {
 409   lang_str_to_lang(&user.local_user.interface_language)
 410 }
 411
 412 fn lang_str_to_lang(lang: &str) -> Lang {
 413   let lang_id = LanguageId::new(lang);
 414   Lang::from_language_id(&lang_id).unwrap_or_else(|| {
 415     let en = LanguageId::new("en");
 416     Lang::from_language_id(&en).expect("default language")
 417   })
 418 }
 419
 420 pub fn local_site_rate_limit_to_rate_limit_config(
 421   local_site_rate_limit: &LocalSiteRateLimit,
 422 ) -> RateLimitConfig {
 423   let l = local_site_rate_limit;
 424   RateLimitConfig {
 425     message: l.message,
 426     message_per_second: l.message_per_second,
 427     post: l.post,
 428     post_per_second: l.post_per_second,
 429     register: l.register,
 430     register_per_second: l.register_per_second,
 431     image: l.image,
 432     image_per_second: l.image_per_second,
 433     comment: l.comment,
 434     comment_per_second: l.comment_per_second,
 435     search: l.search,
 436     search_per_second: l.search_per_second,
 437   }
 438 }
 439
 440 pub fn local_site_to_slur_regex(local_site: &LocalSite) -> Option<Regex> {
 441   build_slur_regex(local_site.slur_filter_regex.as_deref())
 442 }
 443
 444 pub fn local_site_opt_to_slur_regex(local_site: &Option<LocalSite>) -> Option<Regex> {
 445   local_site
 446     .as_ref()
 447     .map(local_site_to_slur_regex)
 448     .unwrap_or(None)
 449 }
 450
 451 pub fn send_application_approved_email(
 452   user: &LocalUserView,
 453   settings: &Settings,
 454 ) -> Result<(), LemmyError> {
 455   let email = &user.local_user.email.clone().expect("email");
 456   let lang = get_interface_language(user);
 457   let subject = lang.registration_approved_subject(&user.person.actor_id);
 458   let body = lang.registration_approved_body(&settings.hostname);
 459   send_email(&subject, email, &user.person.name, &body, settings)
 460 }
 461
 462 /// Send a new applicant email notification to all admins
 463 pub async fn send_new_applicant_email_to_admins(
 464   applicant_username: &str,
 465   pool: &DbPool,
 466   settings: &Settings,
 467 ) -> Result<(), LemmyError> {
 468   // Collect the admins with emails
 469   let admins = LocalUserSettingsView::list_admins_with_emails(pool).await?;
 470
 471   let applications_link = &format!(
 472     "{}/registration_applications",
 473     settings.get_protocol_and_hostname(),
 474   );
 475
 476   for admin in &admins {
 477     let email = &admin.local_user.email.clone().expect("email");
 478     let lang = get_interface_language_from_settings(admin);
 479     let subject = lang.new_application_subject(&settings.hostname, applicant_username);
 480     let body = lang.new_application_body(applications_link);
 481     send_email(&subject, email, &admin.person.name, &body, settings)?;
 482   }
 483   Ok(())
 484 }
 485
 486 /// Send a report to all admins
 487 pub async fn send_new_report_email_to_admins(
 488   reporter_username: &str,
 489   reported_username: &str,
 490   pool: &DbPool,
 491   settings: &Settings,
 492 ) -> Result<(), LemmyError> {
 493   // Collect the admins with emails
 494   let admins = LocalUserSettingsView::list_admins_with_emails(pool).await?;
 495
 496   let reports_link = &format!("{}/reports", settings.get_protocol_and_hostname(),);
 497
 498   for admin in &admins {
 499     let email = &admin.local_user.email.clone().expect("email");
 500     let lang = get_interface_language_from_settings(admin);
 501     let subject = lang.new_report_subject(&settings.hostname, reporter_username, reported_username);
 502     let body = lang.new_report_body(reports_link);
 503     send_email(&subject, email, &admin.person.name, &body, settings)?;
 504   }
 505   Ok(())
 506 }
 507
 508 pub async fn check_registration_application(
 509   local_user_view: &LocalUserView,
 510   local_site: &LocalSite,
 511   pool: &DbPool,
 512 ) -> Result<(), LemmyError> {
 513   if local_site.registration_mode == RegistrationMode::RequireApplication
 514     && !local_user_view.local_user.accepted_application
 515     && !local_user_view.person.admin
 516   {
 517     // Fetch the registration, see if its denied
 518     let local_user_id = local_user_view.local_user.id;
 519     let registration = RegistrationApplication::find_by_local_user_id(pool, local_user_id).await?;
 520     if let Some(deny_reason) = registration.deny_reason {
 521       let lang = get_interface_language(local_user_view);
 522       let registration_denied_message = format!("{}: {}", lang.registration_denied(), &deny_reason);
 523       return Err(LemmyError::from_message(&registration_denied_message));
 524     } else {
 525       return Err(LemmyError::from_message("registration_application_pending"));
 526     }
 527   }
 528   Ok(())
 529 }
 530
 531 pub fn check_private_instance_and_federation_enabled(
 532   local_site: &LocalSite,
 533 ) -> Result<(), LemmyError> {
 534   if local_site.private_instance && local_site.federation_enabled {
 535     return Err(LemmyError::from_message(
 536       "Cannot have both private instance and federation enabled.",
 537     ));
 538   }
 539   Ok(())
 540 }
 541
 542 pub async fn purge_image_posts_for_person(
 543   banned_person_id: PersonId,
 544   pool: &DbPool,
 545   settings: &Settings,
 546   client: &ClientWithMiddleware,
 547 ) -> Result<(), LemmyError> {
 548   let posts = Post::fetch_pictrs_posts_for_creator(pool, banned_person_id).await?;
 549   for post in posts {
 550     if let Some(url) = post.url {
 551       purge_image_from_pictrs(client, settings, &url).await.ok();
 552     }
 553     if let Some(thumbnail_url) = post.thumbnail_url {
 554       purge_image_from_pictrs(client, settings, &thumbnail_url)
 555         .await
 556         .ok();
 557     }
 558   }
 559
 560   Post::remove_pictrs_post_images_and_thumbnails_for_creator(pool, banned_person_id).await?;
 561
 562   Ok(())
 563 }
 564
 565 pub async fn purge_image_posts_for_community(
 566   banned_community_id: CommunityId,
 567   pool: &DbPool,
 568   settings: &Settings,
 569   client: &ClientWithMiddleware,
 570 ) -> Result<(), LemmyError> {
 571   let posts = Post::fetch_pictrs_posts_for_community(pool, banned_community_id).await?;
 572   for post in posts {
 573     if let Some(url) = post.url {
 574       purge_image_from_pictrs(client, settings, &url).await.ok();
 575     }
 576     if let Some(thumbnail_url) = post.thumbnail_url {
 577       purge_image_from_pictrs(client, settings, &thumbnail_url)
 578         .await
 579         .ok();
 580     }
 581   }
 582
 583   Post::remove_pictrs_post_images_and_thumbnails_for_community(pool, banned_community_id).await?;
 584
 585   Ok(())
 586 }
 587
 588 pub async fn remove_user_data(
 589   banned_person_id: PersonId,
 590   pool: &DbPool,
 591   settings: &Settings,
 592   client: &ClientWithMiddleware,
 593 ) -> Result<(), LemmyError> {
 594   // Purge user images
 595   let person = Person::read(pool, banned_person_id).await?;
 596   if let Some(avatar) = person.avatar {
 597     purge_image_from_pictrs(client, settings, &avatar)
 598       .await
 599       .ok();
 600   }
 601   if let Some(banner) = person.banner {
 602     purge_image_from_pictrs(client, settings, &banner)
 603       .await
 604       .ok();
 605   }
 606
 607   // Update the fields to None
 608   Person::update(
 609     pool,
 610     banned_person_id,
 611     &PersonUpdateForm::builder()
 612       .avatar(Some(None))
 613       .banner(Some(None))
 614       .build(),
 615   )
 616   .await?;
 617
 618   // Posts
 619   Post::update_removed_for_creator(pool, banned_person_id, None, true).await?;
 620
 621   // Purge image posts
 622   purge_image_posts_for_person(banned_person_id, pool, settings, client).await?;
 623
 624   // Communities
 625   // Remove all communities where they're the top mod
 626   // for now, remove the communities manually
 627   let first_mod_communities = CommunityModeratorView::get_community_first_mods(pool).await?;
 628
 629   // Filter to only this banned users top communities
 630   let banned_user_first_communities: Vec<CommunityModeratorView> = first_mod_communities
 631     .into_iter()
 632     .filter(|fmc| fmc.moderator.id == banned_person_id)
 633     .collect();
 634
 635   for first_mod_community in banned_user_first_communities {
 636     let community_id = first_mod_community.community.id;
 637     Community::update(
 638       pool,
 639       community_id,
 640       &CommunityUpdateForm::builder().removed(Some(true)).build(),
 641     )
 642     .await?;
 643
 644     // Delete the community images
 645     if let Some(icon) = first_mod_community.community.icon {
 646       purge_image_from_pictrs(client, settings, &icon).await.ok();
 647     }
 648     if let Some(banner) = first_mod_community.community.banner {
 649       purge_image_from_pictrs(client, settings, &banner)
 650         .await
 651         .ok();
 652     }
 653     // Update the fields to None
 654     Community::update(
 655       pool,
 656       community_id,
 657       &CommunityUpdateForm::builder()
 658         .icon(Some(None))
 659         .banner(Some(None))
 660         .build(),
 661     )
 662     .await?;
 663   }
 664
 665   // Comments
 666   Comment::update_removed_for_creator(pool, banned_person_id, true).await?;
 667
 668   Ok(())
 669 }
 670
 671 pub async fn remove_user_data_in_community(
 672   community_id: CommunityId,
 673   banned_person_id: PersonId,
 674   pool: &DbPool,
 675 ) -> Result<(), LemmyError> {
 676   // Posts
 677   Post::update_removed_for_creator(pool, banned_person_id, Some(community_id), true).await?;
 678
 679   // Comments
 680   // TODO Diesel doesn't allow updates with joins, so this has to be a loop
 681   let comments = CommentQuery::builder()
 682     .pool(pool)
 683     .creator_id(Some(banned_person_id))
 684     .community_id(Some(community_id))
 685     .limit(Some(i64::MAX))
 686     .build()
 687     .list()
 688     .await?;
 689
 690   for comment_view in &comments {
 691     let comment_id = comment_view.comment.id;
 692     Comment::update(
 693       pool,
 694       comment_id,
 695       &CommentUpdateForm::builder().removed(Some(true)).build(),
 696     )
 697     .await?;
 698   }
 699
 700   Ok(())
 701 }
 702
 703 pub async fn delete_user_account(
 704   person_id: PersonId,
 705   pool: &DbPool,
 706   settings: &Settings,
 707   client: &ClientWithMiddleware,
 708 ) -> Result<(), LemmyError> {
 709   // Delete their images
 710   let person = Person::read(pool, person_id).await?;
 711   if let Some(avatar) = person.avatar {
 712     purge_image_from_pictrs(client, settings, &avatar)
 713       .await
 714       .ok();
 715   }
 716   if let Some(banner) = person.banner {
 717     purge_image_from_pictrs(client, settings, &banner)
 718       .await
 719       .ok();
 720   }
 721   // No need to update avatar and banner, those are handled in Person::delete_account
 722
 723   // Comments
 724   Comment::permadelete_for_creator(pool, person_id)
 725     .await
 726     .map_err(|e| LemmyError::from_error_message(e, "couldnt_update_comment"))?;
 727
 728   // Posts
 729   Post::permadelete_for_creator(pool, person_id)
 730     .await
 731     .map_err(|e| LemmyError::from_error_message(e, "couldnt_update_post"))?;
 732
 733   // Purge image posts
 734   purge_image_posts_for_person(person_id, pool, settings, client).await?;
 735
 736   Person::delete_account(pool, person_id).await?;
 737
 738   Ok(())
 739 }
 740
 741 pub fn listing_type_with_site_default(
 742   listing_type: Option<ListingType>,
 743   local_site: &LocalSite,
 744 ) -> Result<ListingType, LemmyError> {
 745   Ok(listing_type.unwrap_or(ListingType::from_str(
 746     &local_site.default_post_listing_type,
 747   )?))
 748 }
 749
 750 #[cfg(test)]
 751 mod tests {
 752   use crate::utils::{honeypot_check, password_length_check};
 753
 754   #[test]
 755   #[rustfmt::skip]
 756   fn password_length() {
 757     assert!(password_length_check("Õ¼¾°3yË,o¸ãtÌÈú|ÇÁÙAøüÒI©·¤(T]/ð>æºWæ[C¤bªWöaÃÎñ·{=û³&§½K/c").is_ok());
 758     assert!(password_length_check("1234567890").is_ok());
 759     assert!(password_length_check("short").is_err());
 760     assert!(password_length_check("looooooooooooooooooooooooooooooooooooooooooooooooooooooooooong").is_err());
 761   }
 762
 763   #[test]
 764   fn honeypot() {
 765     assert!(honeypot_check(&None).is_ok());
 766     assert!(honeypot_check(&Some(String::new())).is_ok());
 767     assert!(honeypot_check(&Some("1".to_string())).is_err());
 768     assert!(honeypot_check(&Some("message".to_string())).is_err());
 769   }
 770 }
 771
 772 pub enum EndpointType {
 773   Community,
 774   Person,
 775   Post,
 776   Comment,
 777   PrivateMessage,
 778 }
 779
 780 /// Generates an apub endpoint for a given domain, IE xyz.tld
 781 pub fn generate_local_apub_endpoint(
 782   endpoint_type: EndpointType,
 783   name: &str,
 784   domain: &str,
 785 ) -> Result<DbUrl, ParseError> {
 786   let point = match endpoint_type {
 787     EndpointType::Community => "c",
 788     EndpointType::Person => "u",
 789     EndpointType::Post => "post",
 790     EndpointType::Comment => "comment",
 791     EndpointType::PrivateMessage => "private_message",
 792   };
 793
 794   Ok(Url::parse(&format!("{domain}/{point}/{name}"))?.into())
 795 }
 796
 797 pub fn generate_followers_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
 798   Ok(Url::parse(&format!("{actor_id}/followers"))?.into())
 799 }
 800
 801 pub fn generate_inbox_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
 802   Ok(Url::parse(&format!("{actor_id}/inbox"))?.into())
 803 }
 804
 805 pub fn generate_site_inbox_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
 806   let mut actor_id: Url = actor_id.clone().into();
 807   actor_id.set_path("site_inbox");
 808   Ok(actor_id.into())
 809 }
 810
 811 pub fn generate_shared_inbox_url(actor_id: &DbUrl) -> Result<DbUrl, LemmyError> {
 812   let actor_id: Url = actor_id.clone().into();
 813   let url = format!(
 814     "{}://{}{}/inbox",
 815     &actor_id.scheme(),
 816     &actor_id.host_str().context(location_info!())?,
 817     if let Some(port) = actor_id.port() {
 818       format!(":{port}")
 819     } else {
 820       String::new()
 821     },
 822   );
 823   Ok(Url::parse(&url)?.into())
 824 }
 825
 826 pub fn generate_outbox_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
 827   Ok(Url::parse(&format!("{actor_id}/outbox"))?.into())
 828 }
 829
 830 pub fn generate_moderators_url(community_id: &DbUrl) -> Result<DbUrl, LemmyError> {
 831   Ok(Url::parse(&format!("{community_id}/moderators"))?.into())
 832 }