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, CommunityModerator, CommunityUpdateForm},
  10     email_verification::{EmailVerification, EmailVerificationForm},
  11     instance::Instance,
  12     local_site::LocalSite,
  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   RegistrationMode,
  24 };
  25 use lemmy_db_views::{comment_view::CommentQuery, structs::LocalUserView};
  26 use lemmy_db_views_actor::structs::{
  27   CommunityModeratorView,
  28   CommunityPersonBanView,
  29   CommunityView,
  30   PersonView,
  31 };
  32 use lemmy_utils::{
  33   claims::Claims,
  34   email::{send_email, translations::Lang},
  35   error::LemmyError,
  36   location_info,
  37   rate_limit::RateLimitConfig,
  38   settings::structs::Settings,
  39   utils::slurs::build_slur_regex,
  40 };
  41 use regex::Regex;
  42 use reqwest_middleware::ClientWithMiddleware;
  43 use rosetta_i18n::{Language, LanguageId};
  44 use tracing::warn;
  45 use url::{ParseError, Url};
  46
  47 #[tracing::instrument(skip_all)]
  48 pub async fn is_mod_or_admin(
  49   pool: &DbPool,
  50   person_id: PersonId,
  51   community_id: CommunityId,
  52 ) -> Result<(), LemmyError> {
  53   let is_mod_or_admin = CommunityView::is_mod_or_admin(pool, person_id, community_id).await?;
  54   if !is_mod_or_admin {
  55     return Err(LemmyError::from_message("not_a_mod_or_admin"));
  56   }
  57   Ok(())
  58 }
  59
  60 #[tracing::instrument(skip_all)]
  61 pub async fn is_mod_or_admin_opt(
  62   pool: &DbPool,
  63   local_user_view: Option<&LocalUserView>,
  64   community_id: Option<CommunityId>,
  65 ) -> Result<(), LemmyError> {
  66   if let Some(local_user_view) = local_user_view {
  67     if let Some(community_id) = community_id {
  68       is_mod_or_admin(pool, local_user_view.person.id, community_id).await
  69     } else {
  70       is_admin(local_user_view)
  71     }
  72   } else {
  73     Err(LemmyError::from_message("not_a_mod_or_admin"))
  74   }
  75 }
  76
  77 pub async fn is_top_admin(pool: &DbPool, person_id: PersonId) -> Result<(), LemmyError> {
  78   let admins = PersonView::admins(pool).await?;
  79   let top_admin = admins
  80     .first()
  81     .ok_or_else(|| LemmyError::from_message("no admins"))?;
  82
  83   if top_admin.person.id != person_id {
  84     return Err(LemmyError::from_message("not_top_admin"));
  85   }
  86   Ok(())
  87 }
  88
  89 pub fn is_admin(local_user_view: &LocalUserView) -> Result<(), LemmyError> {
  90   if !local_user_view.person.admin {
  91     return Err(LemmyError::from_message("not_an_admin"));
  92   }
  93   Ok(())
  94 }
  95
  96 pub fn is_top_mod(
  97   local_user_view: &LocalUserView,
  98   community_mods: &[CommunityModeratorView],
  99 ) -> Result<(), LemmyError> {
 100   if local_user_view.person.id
 101     != community_mods
 102       .first()
 103       .map(|cm| cm.moderator.id)
 104       .unwrap_or(PersonId(0))
 105   {
 106     return Err(LemmyError::from_message("not_top_mod"));
 107   }
 108   Ok(())
 109 }
 110
 111 #[tracing::instrument(skip_all)]
 112 pub async fn get_post(post_id: PostId, pool: &DbPool) -> Result<Post, LemmyError> {
 113   Post::read(pool, post_id)
 114     .await
 115     .map_err(|e| LemmyError::from_error_message(e, "couldnt_find_post"))
 116 }
 117
 118 #[tracing::instrument(skip_all)]
 119 pub async fn mark_post_as_read(
 120   person_id: PersonId,
 121   post_id: PostId,
 122   pool: &DbPool,
 123 ) -> Result<PostRead, LemmyError> {
 124   let post_read_form = PostReadForm { post_id, person_id };
 125
 126   PostRead::mark_as_read(pool, &post_read_form)
 127     .await
 128     .map_err(|e| LemmyError::from_error_message(e, "couldnt_mark_post_as_read"))
 129 }
 130
 131 #[tracing::instrument(skip_all)]
 132 pub async fn mark_post_as_unread(
 133   person_id: PersonId,
 134   post_id: PostId,
 135   pool: &DbPool,
 136 ) -> Result<usize, LemmyError> {
 137   let post_read_form = PostReadForm { post_id, person_id };
 138
 139   PostRead::mark_as_unread(pool, &post_read_form)
 140     .await
 141     .map_err(|e| LemmyError::from_error_message(e, "couldnt_mark_post_as_read"))
 142 }
 143
 144 // TODO: this should simply take LemmyContext as param
 145 #[tracing::instrument(skip_all)]
 146 pub async fn get_local_user_view_from_jwt(
 147   jwt: &str,
 148   pool: &DbPool,
 149   secret: &Secret,
 150 ) -> Result<LocalUserView, LemmyError> {
 151   let claims = Claims::decode(jwt, &secret.jwt_secret)
 152     .map_err(|e| e.with_message("not_logged_in"))?
 153     .claims;
 154   let local_user_id = LocalUserId(claims.sub);
 155   let local_user_view = LocalUserView::read(pool, local_user_id).await?;
 156   check_user_valid(
 157     local_user_view.person.banned,
 158     local_user_view.person.ban_expires,
 159     local_user_view.person.deleted,
 160   )?;
 161
 162   check_validator_time(&local_user_view.local_user.validator_time, &claims)?;
 163
 164   Ok(local_user_view)
 165 }
 166
 167 /// Checks if user's token was issued before user's password reset.
 168 pub fn check_validator_time(
 169   validator_time: &NaiveDateTime,
 170   claims: &Claims,
 171 ) -> Result<(), LemmyError> {
 172   let user_validation_time = validator_time.timestamp();
 173   if user_validation_time > claims.iat {
 174     Err(LemmyError::from_message("not_logged_in"))
 175   } else {
 176     Ok(())
 177   }
 178 }
 179
 180 #[tracing::instrument(skip_all)]
 181 pub async fn get_local_user_view_from_jwt_opt(
 182   jwt: Option<&Sensitive<String>>,
 183   pool: &DbPool,
 184   secret: &Secret,
 185 ) -> Result<Option<LocalUserView>, LemmyError> {
 186   match jwt {
 187     Some(jwt) => Ok(Some(get_local_user_view_from_jwt(jwt, pool, secret).await?)),
 188     None => Ok(None),
 189   }
 190 }
 191
 192 #[tracing::instrument(skip_all)]
 193 pub async fn get_local_user_settings_view_from_jwt_opt(
 194   jwt: Option<&Sensitive<String>>,
 195   pool: &DbPool,
 196   secret: &Secret,
 197 ) -> Result<Option<LocalUserView>, LemmyError> {
 198   match jwt {
 199     Some(jwt) => {
 200       let claims = Claims::decode(jwt.as_ref(), &secret.jwt_secret)
 201         .map_err(|e| e.with_message("not_logged_in"))?
 202         .claims;
 203       let local_user_id = LocalUserId(claims.sub);
 204       let local_user_view = LocalUserView::read(pool, local_user_id).await?;
 205       check_user_valid(
 206         local_user_view.person.banned,
 207         local_user_view.person.ban_expires,
 208         local_user_view.person.deleted,
 209       )?;
 210
 211       check_validator_time(&local_user_view.local_user.validator_time, &claims)?;
 212
 213       Ok(Some(local_user_view))
 214     }
 215     None => Ok(None),
 216   }
 217 }
 218 pub fn check_user_valid(
 219   banned: bool,
 220   ban_expires: Option<NaiveDateTime>,
 221   deleted: bool,
 222 ) -> Result<(), LemmyError> {
 223   // Check for a site ban
 224   if is_banned(banned, ban_expires) {
 225     return Err(LemmyError::from_message("site_ban"));
 226   }
 227
 228   // check for account deletion
 229   if deleted {
 230     return Err(LemmyError::from_message("deleted"));
 231   }
 232
 233   Ok(())
 234 }
 235
 236 #[tracing::instrument(skip_all)]
 237 pub async fn check_community_ban(
 238   person_id: PersonId,
 239   community_id: CommunityId,
 240   pool: &DbPool,
 241 ) -> Result<(), LemmyError> {
 242   let is_banned = CommunityPersonBanView::get(pool, person_id, community_id)
 243     .await
 244     .is_ok();
 245   if is_banned {
 246     Err(LemmyError::from_message("community_ban"))
 247   } else {
 248     Ok(())
 249   }
 250 }
 251
 252 #[tracing::instrument(skip_all)]
 253 pub async fn check_community_deleted_or_removed(
 254   community_id: CommunityId,
 255   pool: &DbPool,
 256 ) -> Result<(), LemmyError> {
 257   let community = Community::read(pool, community_id)
 258     .await
 259     .map_err(|e| LemmyError::from_error_message(e, "couldnt_find_community"))?;
 260   if community.deleted || community.removed {
 261     Err(LemmyError::from_message("deleted"))
 262   } else {
 263     Ok(())
 264   }
 265 }
 266
 267 pub fn check_post_deleted_or_removed(post: &Post) -> Result<(), LemmyError> {
 268   if post.deleted || post.removed {
 269     Err(LemmyError::from_message("deleted"))
 270   } else {
 271     Ok(())
 272   }
 273 }
 274
 275 #[tracing::instrument(skip_all)]
 276 pub async fn check_person_block(
 277   my_id: PersonId,
 278   potential_blocker_id: PersonId,
 279   pool: &DbPool,
 280 ) -> Result<(), LemmyError> {
 281   let is_blocked = PersonBlock::read(pool, potential_blocker_id, my_id)
 282     .await
 283     .is_ok();
 284   if is_blocked {
 285     Err(LemmyError::from_message("person_block"))
 286   } else {
 287     Ok(())
 288   }
 289 }
 290
 291 #[tracing::instrument(skip_all)]
 292 pub fn check_downvotes_enabled(score: i16, local_site: &LocalSite) -> Result<(), LemmyError> {
 293   if score == -1 && !local_site.enable_downvotes {
 294     return Err(LemmyError::from_message("downvotes_disabled"));
 295   }
 296   Ok(())
 297 }
 298
 299 #[tracing::instrument(skip_all)]
 300 pub fn check_private_instance(
 301   local_user_view: &Option<LocalUserView>,
 302   local_site: &LocalSite,
 303 ) -> Result<(), LemmyError> {
 304   if local_user_view.is_none() && local_site.private_instance {
 305     return Err(LemmyError::from_message("instance_is_private"));
 306   }
 307   Ok(())
 308 }
 309
 310 #[tracing::instrument(skip_all)]
 311 pub async fn build_federated_instances(
 312   local_site: &LocalSite,
 313   pool: &DbPool,
 314 ) -> Result<Option<FederatedInstances>, LemmyError> {
 315   if local_site.federation_enabled {
 316     // TODO I hate that this requires 3 queries
 317     let linked = Instance::linked(pool).await?;
 318     let allowed = Instance::allowlist(pool).await?;
 319     let blocked = Instance::blocklist(pool).await?;
 320
 321     // These can return empty vectors, so convert them to options
 322     let allowed = (!allowed.is_empty()).then_some(allowed);
 323     let blocked = (!blocked.is_empty()).then_some(blocked);
 324
 325     Ok(Some(FederatedInstances {
 326       linked,
 327       allowed,
 328       blocked,
 329     }))
 330   } else {
 331     Ok(None)
 332   }
 333 }
 334
 335 /// Checks the password length
 336 pub fn password_length_check(pass: &str) -> Result<(), LemmyError> {
 337   if !(10..=60).contains(&pass.chars().count()) {
 338     Err(LemmyError::from_message("invalid_password"))
 339   } else {
 340     Ok(())
 341   }
 342 }
 343
 344 /// Checks the site description length
 345 pub fn site_description_length_check(description: &str) -> Result<(), LemmyError> {
 346   if description.len() > 150 {
 347     Err(LemmyError::from_message("site_description_length_overflow"))
 348   } else {
 349     Ok(())
 350   }
 351 }
 352
 353 /// Checks for a honeypot. If this field is filled, fail the rest of the function
 354 pub fn honeypot_check(honeypot: &Option<String>) -> Result<(), LemmyError> {
 355   if honeypot.is_some() && honeypot != &Some(String::new()) {
 356     Err(LemmyError::from_message("honeypot_fail"))
 357   } else {
 358     Ok(())
 359   }
 360 }
 361
 362 pub fn send_email_to_user(
 363   local_user_view: &LocalUserView,
 364   subject: &str,
 365   body: &str,
 366   settings: &Settings,
 367 ) {
 368   if local_user_view.person.banned || !local_user_view.local_user.send_notifications_to_email {
 369     return;
 370   }
 371
 372   if let Some(user_email) = &local_user_view.local_user.email {
 373     match send_email(
 374       subject,
 375       user_email,
 376       &local_user_view.person.name,
 377       body,
 378       settings,
 379     ) {
 380       Ok(_o) => _o,
 381       Err(e) => warn!("{}", e),
 382     };
 383   }
 384 }
 385
 386 pub async fn send_password_reset_email(
 387   user: &LocalUserView,
 388   pool: &DbPool,
 389   settings: &Settings,
 390 ) -> Result<(), LemmyError> {
 391   // Generate a random token
 392   let token = uuid::Uuid::new_v4().to_string();
 393
 394   // Insert the row
 395   let token2 = token.clone();
 396   let local_user_id = user.local_user.id;
 397   PasswordResetRequest::create_token(pool, local_user_id, &token2).await?;
 398
 399   let email = &user.local_user.email.clone().expect("email");
 400   let lang = get_interface_language(user);
 401   let subject = &lang.password_reset_subject(&user.person.name);
 402   let protocol_and_hostname = settings.get_protocol_and_hostname();
 403   let reset_link = format!("{}/password_change/{}", protocol_and_hostname, &token);
 404   let body = &lang.password_reset_body(reset_link, &user.person.name);
 405   send_email(subject, email, &user.person.name, body, settings)
 406 }
 407
 408 /// Send a verification email
 409 pub async fn send_verification_email(
 410   user: &LocalUserView,
 411   new_email: &str,
 412   pool: &DbPool,
 413   settings: &Settings,
 414 ) -> Result<(), LemmyError> {
 415   let form = EmailVerificationForm {
 416     local_user_id: user.local_user.id,
 417     email: new_email.to_string(),
 418     verification_token: uuid::Uuid::new_v4().to_string(),
 419   };
 420   let verify_link = format!(
 421     "{}/verify_email/{}",
 422     settings.get_protocol_and_hostname(),
 423     &form.verification_token
 424   );
 425   EmailVerification::create(pool, &form).await?;
 426
 427   let lang = get_interface_language(user);
 428   let subject = lang.verify_email_subject(&settings.hostname);
 429   let body = lang.verify_email_body(&settings.hostname, &user.person.name, verify_link);
 430   send_email(&subject, new_email, &user.person.name, &body, settings)?;
 431
 432   Ok(())
 433 }
 434
 435 pub fn send_email_verification_success(
 436   user: &LocalUserView,
 437   settings: &Settings,
 438 ) -> Result<(), LemmyError> {
 439   let email = &user.local_user.email.clone().expect("email");
 440   let lang = get_interface_language(user);
 441   let subject = &lang.email_verified_subject(&user.person.actor_id);
 442   let body = &lang.email_verified_body();
 443   send_email(subject, email, &user.person.name, body, settings)
 444 }
 445
 446 pub fn get_interface_language(user: &LocalUserView) -> Lang {
 447   lang_str_to_lang(&user.local_user.interface_language)
 448 }
 449
 450 pub fn get_interface_language_from_settings(user: &LocalUserView) -> Lang {
 451   lang_str_to_lang(&user.local_user.interface_language)
 452 }
 453
 454 fn lang_str_to_lang(lang: &str) -> Lang {
 455   let lang_id = LanguageId::new(lang);
 456   Lang::from_language_id(&lang_id).unwrap_or_else(|| {
 457     let en = LanguageId::new("en");
 458     Lang::from_language_id(&en).expect("default language")
 459   })
 460 }
 461
 462 pub fn local_site_rate_limit_to_rate_limit_config(
 463   local_site_rate_limit: &LocalSiteRateLimit,
 464 ) -> RateLimitConfig {
 465   let l = local_site_rate_limit;
 466   RateLimitConfig {
 467     message: l.message,
 468     message_per_second: l.message_per_second,
 469     post: l.post,
 470     post_per_second: l.post_per_second,
 471     register: l.register,
 472     register_per_second: l.register_per_second,
 473     image: l.image,
 474     image_per_second: l.image_per_second,
 475     comment: l.comment,
 476     comment_per_second: l.comment_per_second,
 477     search: l.search,
 478     search_per_second: l.search_per_second,
 479   }
 480 }
 481
 482 pub fn local_site_to_slur_regex(local_site: &LocalSite) -> Option<Regex> {
 483   build_slur_regex(local_site.slur_filter_regex.as_deref())
 484 }
 485
 486 pub fn local_site_opt_to_slur_regex(local_site: &Option<LocalSite>) -> Option<Regex> {
 487   local_site
 488     .as_ref()
 489     .map(local_site_to_slur_regex)
 490     .unwrap_or(None)
 491 }
 492
 493 pub fn send_application_approved_email(
 494   user: &LocalUserView,
 495   settings: &Settings,
 496 ) -> Result<(), LemmyError> {
 497   let email = &user.local_user.email.clone().expect("email");
 498   let lang = get_interface_language(user);
 499   let subject = lang.registration_approved_subject(&user.person.actor_id);
 500   let body = lang.registration_approved_body(&settings.hostname);
 501   send_email(&subject, email, &user.person.name, &body, settings)
 502 }
 503
 504 /// Send a new applicant email notification to all admins
 505 pub async fn send_new_applicant_email_to_admins(
 506   applicant_username: &str,
 507   pool: &DbPool,
 508   settings: &Settings,
 509 ) -> Result<(), LemmyError> {
 510   // Collect the admins with emails
 511   let admins = LocalUserView::list_admins_with_emails(pool).await?;
 512
 513   let applications_link = &format!(
 514     "{}/registration_applications",
 515     settings.get_protocol_and_hostname(),
 516   );
 517
 518   for admin in &admins {
 519     let email = &admin.local_user.email.clone().expect("email");
 520     let lang = get_interface_language_from_settings(admin);
 521     let subject = lang.new_application_subject(&settings.hostname, applicant_username);
 522     let body = lang.new_application_body(applications_link);
 523     send_email(&subject, email, &admin.person.name, &body, settings)?;
 524   }
 525   Ok(())
 526 }
 527
 528 /// Send a report to all admins
 529 pub async fn send_new_report_email_to_admins(
 530   reporter_username: &str,
 531   reported_username: &str,
 532   pool: &DbPool,
 533   settings: &Settings,
 534 ) -> Result<(), LemmyError> {
 535   // Collect the admins with emails
 536   let admins = LocalUserView::list_admins_with_emails(pool).await?;
 537
 538   let reports_link = &format!("{}/reports", settings.get_protocol_and_hostname(),);
 539
 540   for admin in &admins {
 541     let email = &admin.local_user.email.clone().expect("email");
 542     let lang = get_interface_language_from_settings(admin);
 543     let subject = lang.new_report_subject(&settings.hostname, reporter_username, reported_username);
 544     let body = lang.new_report_body(reports_link);
 545     send_email(&subject, email, &admin.person.name, &body, settings)?;
 546   }
 547   Ok(())
 548 }
 549
 550 pub async fn check_registration_application(
 551   local_user_view: &LocalUserView,
 552   local_site: &LocalSite,
 553   pool: &DbPool,
 554 ) -> Result<(), LemmyError> {
 555   if local_site.registration_mode == RegistrationMode::RequireApplication
 556     && !local_user_view.local_user.accepted_application
 557     && !local_user_view.person.admin
 558   {
 559     // Fetch the registration, see if its denied
 560     let local_user_id = local_user_view.local_user.id;
 561     let registration = RegistrationApplication::find_by_local_user_id(pool, local_user_id).await?;
 562     if let Some(deny_reason) = registration.deny_reason {
 563       let lang = get_interface_language(local_user_view);
 564       let registration_denied_message = format!("{}: {}", lang.registration_denied(), &deny_reason);
 565       return Err(LemmyError::from_message(&registration_denied_message));
 566     } else {
 567       return Err(LemmyError::from_message("registration_application_pending"));
 568     }
 569   }
 570   Ok(())
 571 }
 572
 573 pub fn check_private_instance_and_federation_enabled(
 574   local_site: &LocalSite,
 575 ) -> Result<(), LemmyError> {
 576   if local_site.private_instance && local_site.federation_enabled {
 577     return Err(LemmyError::from_message(
 578       "Cannot have both private instance and federation enabled.",
 579     ));
 580   }
 581   Ok(())
 582 }
 583
 584 pub async fn purge_image_posts_for_person(
 585   banned_person_id: PersonId,
 586   pool: &DbPool,
 587   settings: &Settings,
 588   client: &ClientWithMiddleware,
 589 ) -> Result<(), LemmyError> {
 590   let posts = Post::fetch_pictrs_posts_for_creator(pool, banned_person_id).await?;
 591   for post in posts {
 592     if let Some(url) = post.url {
 593       purge_image_from_pictrs(client, settings, &url).await.ok();
 594     }
 595     if let Some(thumbnail_url) = post.thumbnail_url {
 596       purge_image_from_pictrs(client, settings, &thumbnail_url)
 597         .await
 598         .ok();
 599     }
 600   }
 601
 602   Post::remove_pictrs_post_images_and_thumbnails_for_creator(pool, banned_person_id).await?;
 603
 604   Ok(())
 605 }
 606
 607 pub async fn purge_image_posts_for_community(
 608   banned_community_id: CommunityId,
 609   pool: &DbPool,
 610   settings: &Settings,
 611   client: &ClientWithMiddleware,
 612 ) -> Result<(), LemmyError> {
 613   let posts = Post::fetch_pictrs_posts_for_community(pool, banned_community_id).await?;
 614   for post in posts {
 615     if let Some(url) = post.url {
 616       purge_image_from_pictrs(client, settings, &url).await.ok();
 617     }
 618     if let Some(thumbnail_url) = post.thumbnail_url {
 619       purge_image_from_pictrs(client, settings, &thumbnail_url)
 620         .await
 621         .ok();
 622     }
 623   }
 624
 625   Post::remove_pictrs_post_images_and_thumbnails_for_community(pool, banned_community_id).await?;
 626
 627   Ok(())
 628 }
 629
 630 pub async fn remove_user_data(
 631   banned_person_id: PersonId,
 632   pool: &DbPool,
 633   settings: &Settings,
 634   client: &ClientWithMiddleware,
 635 ) -> Result<(), LemmyError> {
 636   // Purge user images
 637   let person = Person::read(pool, banned_person_id).await?;
 638   if let Some(avatar) = person.avatar {
 639     purge_image_from_pictrs(client, settings, &avatar)
 640       .await
 641       .ok();
 642   }
 643   if let Some(banner) = person.banner {
 644     purge_image_from_pictrs(client, settings, &banner)
 645       .await
 646       .ok();
 647   }
 648
 649   // Update the fields to None
 650   Person::update(
 651     pool,
 652     banned_person_id,
 653     &PersonUpdateForm::builder()
 654       .avatar(Some(None))
 655       .banner(Some(None))
 656       .build(),
 657   )
 658   .await?;
 659
 660   // Posts
 661   Post::update_removed_for_creator(pool, banned_person_id, None, true).await?;
 662
 663   // Purge image posts
 664   purge_image_posts_for_person(banned_person_id, pool, settings, client).await?;
 665
 666   // Communities
 667   // Remove all communities where they're the top mod
 668   // for now, remove the communities manually
 669   let first_mod_communities = CommunityModeratorView::get_community_first_mods(pool).await?;
 670
 671   // Filter to only this banned users top communities
 672   let banned_user_first_communities: Vec<CommunityModeratorView> = first_mod_communities
 673     .into_iter()
 674     .filter(|fmc| fmc.moderator.id == banned_person_id)
 675     .collect();
 676
 677   for first_mod_community in banned_user_first_communities {
 678     let community_id = first_mod_community.community.id;
 679     Community::update(
 680       pool,
 681       community_id,
 682       &CommunityUpdateForm::builder().removed(Some(true)).build(),
 683     )
 684     .await?;
 685
 686     // Delete the community images
 687     if let Some(icon) = first_mod_community.community.icon {
 688       purge_image_from_pictrs(client, settings, &icon).await.ok();
 689     }
 690     if let Some(banner) = first_mod_community.community.banner {
 691       purge_image_from_pictrs(client, settings, &banner)
 692         .await
 693         .ok();
 694     }
 695     // Update the fields to None
 696     Community::update(
 697       pool,
 698       community_id,
 699       &CommunityUpdateForm::builder()
 700         .icon(Some(None))
 701         .banner(Some(None))
 702         .build(),
 703     )
 704     .await?;
 705   }
 706
 707   // Comments
 708   Comment::update_removed_for_creator(pool, banned_person_id, true).await?;
 709
 710   Ok(())
 711 }
 712
 713 pub async fn remove_user_data_in_community(
 714   community_id: CommunityId,
 715   banned_person_id: PersonId,
 716   pool: &DbPool,
 717 ) -> Result<(), LemmyError> {
 718   // Posts
 719   Post::update_removed_for_creator(pool, banned_person_id, Some(community_id), true).await?;
 720
 721   // Comments
 722   // TODO Diesel doesn't allow updates with joins, so this has to be a loop
 723   let comments = CommentQuery::builder()
 724     .pool(pool)
 725     .creator_id(Some(banned_person_id))
 726     .community_id(Some(community_id))
 727     .limit(Some(i64::MAX))
 728     .build()
 729     .list()
 730     .await?;
 731
 732   for comment_view in &comments {
 733     let comment_id = comment_view.comment.id;
 734     Comment::update(
 735       pool,
 736       comment_id,
 737       &CommentUpdateForm::builder().removed(Some(true)).build(),
 738     )
 739     .await?;
 740   }
 741
 742   Ok(())
 743 }
 744
 745 pub async fn delete_user_account(
 746   person_id: PersonId,
 747   pool: &DbPool,
 748   settings: &Settings,
 749   client: &ClientWithMiddleware,
 750 ) -> Result<(), LemmyError> {
 751   // Delete their images
 752   let person = Person::read(pool, person_id).await?;
 753   if let Some(avatar) = person.avatar {
 754     purge_image_from_pictrs(client, settings, &avatar)
 755       .await
 756       .ok();
 757   }
 758   if let Some(banner) = person.banner {
 759     purge_image_from_pictrs(client, settings, &banner)
 760       .await
 761       .ok();
 762   }
 763   // No need to update avatar and banner, those are handled in Person::delete_account
 764
 765   // Comments
 766   Comment::permadelete_for_creator(pool, person_id)
 767     .await
 768     .map_err(|e| LemmyError::from_error_message(e, "couldnt_update_comment"))?;
 769
 770   // Posts
 771   Post::permadelete_for_creator(pool, person_id)
 772     .await
 773     .map_err(|e| LemmyError::from_error_message(e, "couldnt_update_post"))?;
 774
 775   // Purge image posts
 776   purge_image_posts_for_person(person_id, pool, settings, client).await?;
 777
 778   // Leave communities they mod
 779   CommunityModerator::leave_all_communities(pool, person_id).await?;
 780
 781   Person::delete_account(pool, person_id).await?;
 782
 783   Ok(())
 784 }
 785
 786 #[cfg(test)]
 787 mod tests {
 788   use crate::utils::{honeypot_check, password_length_check};
 789
 790   #[test]
 791   #[rustfmt::skip]
 792   fn password_length() {
 793     assert!(password_length_check("Õ¼¾°3yË,o¸ãtÌÈú|ÇÁÙAøüÒI©·¤(T]/ð>æºWæ[C¤bªWöaÃÎñ·{=û³&§½K/c").is_ok());
 794     assert!(password_length_check("1234567890").is_ok());
 795     assert!(password_length_check("short").is_err());
 796     assert!(password_length_check("looooooooooooooooooooooooooooooooooooooooooooooooooooooooooong").is_err());
 797   }
 798
 799   #[test]
 800   fn honeypot() {
 801     assert!(honeypot_check(&None).is_ok());
 802     assert!(honeypot_check(&Some(String::new())).is_ok());
 803     assert!(honeypot_check(&Some("1".to_string())).is_err());
 804     assert!(honeypot_check(&Some("message".to_string())).is_err());
 805   }
 806 }
 807
 808 pub enum EndpointType {
 809   Community,
 810   Person,
 811   Post,
 812   Comment,
 813   PrivateMessage,
 814 }
 815
 816 /// Generates an apub endpoint for a given domain, IE xyz.tld
 817 pub fn generate_local_apub_endpoint(
 818   endpoint_type: EndpointType,
 819   name: &str,
 820   domain: &str,
 821 ) -> Result<DbUrl, ParseError> {
 822   let point = match endpoint_type {
 823     EndpointType::Community => "c",
 824     EndpointType::Person => "u",
 825     EndpointType::Post => "post",
 826     EndpointType::Comment => "comment",
 827     EndpointType::PrivateMessage => "private_message",
 828   };
 829
 830   Ok(Url::parse(&format!("{domain}/{point}/{name}"))?.into())
 831 }
 832
 833 pub fn generate_followers_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
 834   Ok(Url::parse(&format!("{actor_id}/followers"))?.into())
 835 }
 836
 837 pub fn generate_inbox_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
 838   Ok(Url::parse(&format!("{actor_id}/inbox"))?.into())
 839 }
 840
 841 pub fn generate_site_inbox_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
 842   let mut actor_id: Url = actor_id.clone().into();
 843   actor_id.set_path("site_inbox");
 844   Ok(actor_id.into())
 845 }
 846
 847 pub fn generate_shared_inbox_url(actor_id: &DbUrl) -> Result<DbUrl, LemmyError> {
 848   let actor_id: Url = actor_id.clone().into();
 849   let url = format!(
 850     "{}://{}{}/inbox",
 851     &actor_id.scheme(),
 852     &actor_id.host_str().context(location_info!())?,
 853     if let Some(port) = actor_id.port() {
 854       format!(":{port}")
 855     } else {
 856       String::new()
 857     },
 858   );
 859   Ok(Url::parse(&url)?.into())
 860 }
 861
 862 pub fn generate_outbox_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
 863   Ok(Url::parse(&format!("{actor_id}/outbox"))?.into())
 864 }
 865
 866 pub fn generate_featured_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
 867   Ok(Url::parse(&format!("{actor_id}/featured"))?.into())
 868 }
 869
 870 pub fn generate_moderators_url(community_id: &DbUrl) -> Result<DbUrl, LemmyError> {
 871   Ok(Url::parse(&format!("{community_id}/moderators"))?.into())
 872 }