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     Ok(Some(FederatedInstances {
 322       linked,
 323       allowed,
 324       blocked,
 325     }))
 326   } else {
 327     Ok(None)
 328   }
 329 }
 330
 331 /// Checks the password length
 332 pub fn password_length_check(pass: &str) -> Result<(), LemmyError> {
 333   if !(10..=60).contains(&pass.chars().count()) {
 334     Err(LemmyError::from_message("invalid_password"))
 335   } else {
 336     Ok(())
 337   }
 338 }
 339
 340 /// Checks the site description length
 341 pub fn site_description_length_check(description: &str) -> Result<(), LemmyError> {
 342   if description.len() > 150 {
 343     Err(LemmyError::from_message("site_description_length_overflow"))
 344   } else {
 345     Ok(())
 346   }
 347 }
 348
 349 /// Checks for a honeypot. If this field is filled, fail the rest of the function
 350 pub fn honeypot_check(honeypot: &Option<String>) -> Result<(), LemmyError> {
 351   if honeypot.is_some() && honeypot != &Some(String::new()) {
 352     Err(LemmyError::from_message("honeypot_fail"))
 353   } else {
 354     Ok(())
 355   }
 356 }
 357
 358 pub fn send_email_to_user(
 359   local_user_view: &LocalUserView,
 360   subject: &str,
 361   body: &str,
 362   settings: &Settings,
 363 ) {
 364   if local_user_view.person.banned || !local_user_view.local_user.send_notifications_to_email {
 365     return;
 366   }
 367
 368   if let Some(user_email) = &local_user_view.local_user.email {
 369     match send_email(
 370       subject,
 371       user_email,
 372       &local_user_view.person.name,
 373       body,
 374       settings,
 375     ) {
 376       Ok(_o) => _o,
 377       Err(e) => warn!("{}", e),
 378     };
 379   }
 380 }
 381
 382 pub async fn send_password_reset_email(
 383   user: &LocalUserView,
 384   pool: &DbPool,
 385   settings: &Settings,
 386 ) -> Result<(), LemmyError> {
 387   // Generate a random token
 388   let token = uuid::Uuid::new_v4().to_string();
 389
 390   // Insert the row
 391   let token2 = token.clone();
 392   let local_user_id = user.local_user.id;
 393   PasswordResetRequest::create_token(pool, local_user_id, &token2).await?;
 394
 395   let email = &user.local_user.email.clone().expect("email");
 396   let lang = get_interface_language(user);
 397   let subject = &lang.password_reset_subject(&user.person.name);
 398   let protocol_and_hostname = settings.get_protocol_and_hostname();
 399   let reset_link = format!("{}/password_change/{}", protocol_and_hostname, &token);
 400   let body = &lang.password_reset_body(reset_link, &user.person.name);
 401   send_email(subject, email, &user.person.name, body, settings)
 402 }
 403
 404 /// Send a verification email
 405 pub async fn send_verification_email(
 406   user: &LocalUserView,
 407   new_email: &str,
 408   pool: &DbPool,
 409   settings: &Settings,
 410 ) -> Result<(), LemmyError> {
 411   let form = EmailVerificationForm {
 412     local_user_id: user.local_user.id,
 413     email: new_email.to_string(),
 414     verification_token: uuid::Uuid::new_v4().to_string(),
 415   };
 416   let verify_link = format!(
 417     "{}/verify_email/{}",
 418     settings.get_protocol_and_hostname(),
 419     &form.verification_token
 420   );
 421   EmailVerification::create(pool, &form).await?;
 422
 423   let lang = get_interface_language(user);
 424   let subject = lang.verify_email_subject(&settings.hostname);
 425   let body = lang.verify_email_body(&settings.hostname, &user.person.name, verify_link);
 426   send_email(&subject, new_email, &user.person.name, &body, settings)?;
 427
 428   Ok(())
 429 }
 430
 431 pub fn send_email_verification_success(
 432   user: &LocalUserView,
 433   settings: &Settings,
 434 ) -> Result<(), LemmyError> {
 435   let email = &user.local_user.email.clone().expect("email");
 436   let lang = get_interface_language(user);
 437   let subject = &lang.email_verified_subject(&user.person.actor_id);
 438   let body = &lang.email_verified_body();
 439   send_email(subject, email, &user.person.name, body, settings)
 440 }
 441
 442 pub fn get_interface_language(user: &LocalUserView) -> Lang {
 443   lang_str_to_lang(&user.local_user.interface_language)
 444 }
 445
 446 pub fn get_interface_language_from_settings(user: &LocalUserView) -> Lang {
 447   lang_str_to_lang(&user.local_user.interface_language)
 448 }
 449
 450 fn lang_str_to_lang(lang: &str) -> Lang {
 451   let lang_id = LanguageId::new(lang);
 452   Lang::from_language_id(&lang_id).unwrap_or_else(|| {
 453     let en = LanguageId::new("en");
 454     Lang::from_language_id(&en).expect("default language")
 455   })
 456 }
 457
 458 pub fn local_site_rate_limit_to_rate_limit_config(
 459   local_site_rate_limit: &LocalSiteRateLimit,
 460 ) -> RateLimitConfig {
 461   let l = local_site_rate_limit;
 462   RateLimitConfig {
 463     message: l.message,
 464     message_per_second: l.message_per_second,
 465     post: l.post,
 466     post_per_second: l.post_per_second,
 467     register: l.register,
 468     register_per_second: l.register_per_second,
 469     image: l.image,
 470     image_per_second: l.image_per_second,
 471     comment: l.comment,
 472     comment_per_second: l.comment_per_second,
 473     search: l.search,
 474     search_per_second: l.search_per_second,
 475   }
 476 }
 477
 478 pub fn local_site_to_slur_regex(local_site: &LocalSite) -> Option<Regex> {
 479   build_slur_regex(local_site.slur_filter_regex.as_deref())
 480 }
 481
 482 pub fn local_site_opt_to_slur_regex(local_site: &Option<LocalSite>) -> Option<Regex> {
 483   local_site
 484     .as_ref()
 485     .map(local_site_to_slur_regex)
 486     .unwrap_or(None)
 487 }
 488
 489 pub fn send_application_approved_email(
 490   user: &LocalUserView,
 491   settings: &Settings,
 492 ) -> Result<(), LemmyError> {
 493   let email = &user.local_user.email.clone().expect("email");
 494   let lang = get_interface_language(user);
 495   let subject = lang.registration_approved_subject(&user.person.actor_id);
 496   let body = lang.registration_approved_body(&settings.hostname);
 497   send_email(&subject, email, &user.person.name, &body, settings)
 498 }
 499
 500 /// Send a new applicant email notification to all admins
 501 pub async fn send_new_applicant_email_to_admins(
 502   applicant_username: &str,
 503   pool: &DbPool,
 504   settings: &Settings,
 505 ) -> Result<(), LemmyError> {
 506   // Collect the admins with emails
 507   let admins = LocalUserView::list_admins_with_emails(pool).await?;
 508
 509   let applications_link = &format!(
 510     "{}/registration_applications",
 511     settings.get_protocol_and_hostname(),
 512   );
 513
 514   for admin in &admins {
 515     let email = &admin.local_user.email.clone().expect("email");
 516     let lang = get_interface_language_from_settings(admin);
 517     let subject = lang.new_application_subject(&settings.hostname, applicant_username);
 518     let body = lang.new_application_body(applications_link);
 519     send_email(&subject, email, &admin.person.name, &body, settings)?;
 520   }
 521   Ok(())
 522 }
 523
 524 /// Send a report to all admins
 525 pub async fn send_new_report_email_to_admins(
 526   reporter_username: &str,
 527   reported_username: &str,
 528   pool: &DbPool,
 529   settings: &Settings,
 530 ) -> Result<(), LemmyError> {
 531   // Collect the admins with emails
 532   let admins = LocalUserView::list_admins_with_emails(pool).await?;
 533
 534   let reports_link = &format!("{}/reports", settings.get_protocol_and_hostname(),);
 535
 536   for admin in &admins {
 537     let email = &admin.local_user.email.clone().expect("email");
 538     let lang = get_interface_language_from_settings(admin);
 539     let subject = lang.new_report_subject(&settings.hostname, reporter_username, reported_username);
 540     let body = lang.new_report_body(reports_link);
 541     send_email(&subject, email, &admin.person.name, &body, settings)?;
 542   }
 543   Ok(())
 544 }
 545
 546 pub async fn check_registration_application(
 547   local_user_view: &LocalUserView,
 548   local_site: &LocalSite,
 549   pool: &DbPool,
 550 ) -> Result<(), LemmyError> {
 551   if local_site.registration_mode == RegistrationMode::RequireApplication
 552     && !local_user_view.local_user.accepted_application
 553     && !local_user_view.person.admin
 554   {
 555     // Fetch the registration, see if its denied
 556     let local_user_id = local_user_view.local_user.id;
 557     let registration = RegistrationApplication::find_by_local_user_id(pool, local_user_id).await?;
 558     if let Some(deny_reason) = registration.deny_reason {
 559       let lang = get_interface_language(local_user_view);
 560       let registration_denied_message = format!("{}: {}", lang.registration_denied(), &deny_reason);
 561       return Err(LemmyError::from_message(&registration_denied_message));
 562     } else {
 563       return Err(LemmyError::from_message("registration_application_pending"));
 564     }
 565   }
 566   Ok(())
 567 }
 568
 569 pub fn check_private_instance_and_federation_enabled(
 570   local_site: &LocalSite,
 571 ) -> Result<(), LemmyError> {
 572   if local_site.private_instance && local_site.federation_enabled {
 573     return Err(LemmyError::from_message(
 574       "Cannot have both private instance and federation enabled.",
 575     ));
 576   }
 577   Ok(())
 578 }
 579
 580 pub async fn purge_image_posts_for_person(
 581   banned_person_id: PersonId,
 582   pool: &DbPool,
 583   settings: &Settings,
 584   client: &ClientWithMiddleware,
 585 ) -> Result<(), LemmyError> {
 586   let posts = Post::fetch_pictrs_posts_for_creator(pool, banned_person_id).await?;
 587   for post in posts {
 588     if let Some(url) = post.url {
 589       purge_image_from_pictrs(client, settings, &url).await.ok();
 590     }
 591     if let Some(thumbnail_url) = post.thumbnail_url {
 592       purge_image_from_pictrs(client, settings, &thumbnail_url)
 593         .await
 594         .ok();
 595     }
 596   }
 597
 598   Post::remove_pictrs_post_images_and_thumbnails_for_creator(pool, banned_person_id).await?;
 599
 600   Ok(())
 601 }
 602
 603 pub async fn purge_image_posts_for_community(
 604   banned_community_id: CommunityId,
 605   pool: &DbPool,
 606   settings: &Settings,
 607   client: &ClientWithMiddleware,
 608 ) -> Result<(), LemmyError> {
 609   let posts = Post::fetch_pictrs_posts_for_community(pool, banned_community_id).await?;
 610   for post in posts {
 611     if let Some(url) = post.url {
 612       purge_image_from_pictrs(client, settings, &url).await.ok();
 613     }
 614     if let Some(thumbnail_url) = post.thumbnail_url {
 615       purge_image_from_pictrs(client, settings, &thumbnail_url)
 616         .await
 617         .ok();
 618     }
 619   }
 620
 621   Post::remove_pictrs_post_images_and_thumbnails_for_community(pool, banned_community_id).await?;
 622
 623   Ok(())
 624 }
 625
 626 pub async fn remove_user_data(
 627   banned_person_id: PersonId,
 628   pool: &DbPool,
 629   settings: &Settings,
 630   client: &ClientWithMiddleware,
 631 ) -> Result<(), LemmyError> {
 632   // Purge user images
 633   let person = Person::read(pool, banned_person_id).await?;
 634   if let Some(avatar) = person.avatar {
 635     purge_image_from_pictrs(client, settings, &avatar)
 636       .await
 637       .ok();
 638   }
 639   if let Some(banner) = person.banner {
 640     purge_image_from_pictrs(client, settings, &banner)
 641       .await
 642       .ok();
 643   }
 644
 645   // Update the fields to None
 646   Person::update(
 647     pool,
 648     banned_person_id,
 649     &PersonUpdateForm::builder()
 650       .avatar(Some(None))
 651       .banner(Some(None))
 652       .build(),
 653   )
 654   .await?;
 655
 656   // Posts
 657   Post::update_removed_for_creator(pool, banned_person_id, None, true).await?;
 658
 659   // Purge image posts
 660   purge_image_posts_for_person(banned_person_id, pool, settings, client).await?;
 661
 662   // Communities
 663   // Remove all communities where they're the top mod
 664   // for now, remove the communities manually
 665   let first_mod_communities = CommunityModeratorView::get_community_first_mods(pool).await?;
 666
 667   // Filter to only this banned users top communities
 668   let banned_user_first_communities: Vec<CommunityModeratorView> = first_mod_communities
 669     .into_iter()
 670     .filter(|fmc| fmc.moderator.id == banned_person_id)
 671     .collect();
 672
 673   for first_mod_community in banned_user_first_communities {
 674     let community_id = first_mod_community.community.id;
 675     Community::update(
 676       pool,
 677       community_id,
 678       &CommunityUpdateForm::builder().removed(Some(true)).build(),
 679     )
 680     .await?;
 681
 682     // Delete the community images
 683     if let Some(icon) = first_mod_community.community.icon {
 684       purge_image_from_pictrs(client, settings, &icon).await.ok();
 685     }
 686     if let Some(banner) = first_mod_community.community.banner {
 687       purge_image_from_pictrs(client, settings, &banner)
 688         .await
 689         .ok();
 690     }
 691     // Update the fields to None
 692     Community::update(
 693       pool,
 694       community_id,
 695       &CommunityUpdateForm::builder()
 696         .icon(Some(None))
 697         .banner(Some(None))
 698         .build(),
 699     )
 700     .await?;
 701   }
 702
 703   // Comments
 704   Comment::update_removed_for_creator(pool, banned_person_id, true).await?;
 705
 706   Ok(())
 707 }
 708
 709 pub async fn remove_user_data_in_community(
 710   community_id: CommunityId,
 711   banned_person_id: PersonId,
 712   pool: &DbPool,
 713 ) -> Result<(), LemmyError> {
 714   // Posts
 715   Post::update_removed_for_creator(pool, banned_person_id, Some(community_id), true).await?;
 716
 717   // Comments
 718   // TODO Diesel doesn't allow updates with joins, so this has to be a loop
 719   let comments = CommentQuery::builder()
 720     .pool(pool)
 721     .creator_id(Some(banned_person_id))
 722     .community_id(Some(community_id))
 723     .limit(Some(i64::MAX))
 724     .build()
 725     .list()
 726     .await?;
 727
 728   for comment_view in &comments {
 729     let comment_id = comment_view.comment.id;
 730     Comment::update(
 731       pool,
 732       comment_id,
 733       &CommentUpdateForm::builder().removed(Some(true)).build(),
 734     )
 735     .await?;
 736   }
 737
 738   Ok(())
 739 }
 740
 741 pub async fn delete_user_account(
 742   person_id: PersonId,
 743   pool: &DbPool,
 744   settings: &Settings,
 745   client: &ClientWithMiddleware,
 746 ) -> Result<(), LemmyError> {
 747   // Delete their images
 748   let person = Person::read(pool, person_id).await?;
 749   if let Some(avatar) = person.avatar {
 750     purge_image_from_pictrs(client, settings, &avatar)
 751       .await
 752       .ok();
 753   }
 754   if let Some(banner) = person.banner {
 755     purge_image_from_pictrs(client, settings, &banner)
 756       .await
 757       .ok();
 758   }
 759   // No need to update avatar and banner, those are handled in Person::delete_account
 760
 761   // Comments
 762   Comment::permadelete_for_creator(pool, person_id)
 763     .await
 764     .map_err(|e| LemmyError::from_error_message(e, "couldnt_update_comment"))?;
 765
 766   // Posts
 767   Post::permadelete_for_creator(pool, person_id)
 768     .await
 769     .map_err(|e| LemmyError::from_error_message(e, "couldnt_update_post"))?;
 770
 771   // Purge image posts
 772   purge_image_posts_for_person(person_id, pool, settings, client).await?;
 773
 774   // Leave communities they mod
 775   CommunityModerator::leave_all_communities(pool, person_id).await?;
 776
 777   Person::delete_account(pool, person_id).await?;
 778
 779   Ok(())
 780 }
 781
 782 #[cfg(test)]
 783 mod tests {
 784   use crate::utils::{honeypot_check, password_length_check};
 785
 786   #[test]
 787   #[rustfmt::skip]
 788   fn password_length() {
 789     assert!(password_length_check("Õ¼¾°3yË,o¸ãtÌÈú|ÇÁÙAøüÒI©·¤(T]/ð>æºWæ[C¤bªWöaÃÎñ·{=û³&§½K/c").is_ok());
 790     assert!(password_length_check("1234567890").is_ok());
 791     assert!(password_length_check("short").is_err());
 792     assert!(password_length_check("looooooooooooooooooooooooooooooooooooooooooooooooooooooooooong").is_err());
 793   }
 794
 795   #[test]
 796   fn honeypot() {
 797     assert!(honeypot_check(&None).is_ok());
 798     assert!(honeypot_check(&Some(String::new())).is_ok());
 799     assert!(honeypot_check(&Some("1".to_string())).is_err());
 800     assert!(honeypot_check(&Some("message".to_string())).is_err());
 801   }
 802 }
 803
 804 pub enum EndpointType {
 805   Community,
 806   Person,
 807   Post,
 808   Comment,
 809   PrivateMessage,
 810 }
 811
 812 /// Generates an apub endpoint for a given domain, IE xyz.tld
 813 pub fn generate_local_apub_endpoint(
 814   endpoint_type: EndpointType,
 815   name: &str,
 816   domain: &str,
 817 ) -> Result<DbUrl, ParseError> {
 818   let point = match endpoint_type {
 819     EndpointType::Community => "c",
 820     EndpointType::Person => "u",
 821     EndpointType::Post => "post",
 822     EndpointType::Comment => "comment",
 823     EndpointType::PrivateMessage => "private_message",
 824   };
 825
 826   Ok(Url::parse(&format!("{domain}/{point}/{name}"))?.into())
 827 }
 828
 829 pub fn generate_followers_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
 830   Ok(Url::parse(&format!("{actor_id}/followers"))?.into())
 831 }
 832
 833 pub fn generate_inbox_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
 834   Ok(Url::parse(&format!("{actor_id}/inbox"))?.into())
 835 }
 836
 837 pub fn generate_site_inbox_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
 838   let mut actor_id: Url = actor_id.clone().into();
 839   actor_id.set_path("site_inbox");
 840   Ok(actor_id.into())
 841 }
 842
 843 pub fn generate_shared_inbox_url(actor_id: &DbUrl) -> Result<DbUrl, LemmyError> {
 844   let actor_id: Url = actor_id.clone().into();
 845   let url = format!(
 846     "{}://{}{}/inbox",
 847     &actor_id.scheme(),
 848     &actor_id.host_str().context(location_info!())?,
 849     if let Some(port) = actor_id.port() {
 850       format!(":{port}")
 851     } else {
 852       String::new()
 853     },
 854   );
 855   Ok(Url::parse(&url)?.into())
 856 }
 857
 858 pub fn generate_outbox_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
 859   Ok(Url::parse(&format!("{actor_id}/outbox"))?.into())
 860 }
 861
 862 pub fn generate_featured_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
 863   Ok(Url::parse(&format!("{actor_id}/featured"))?.into())
 864 }
 865
 866 pub fn generate_moderators_url(community_id: &DbUrl) -> Result<DbUrl, LemmyError> {
 867   Ok(Url::parse(&format!("{community_id}/moderators"))?.into())
 868 }