-use crate::site::FederatedInstances;
-use lemmy_db_schema::{
- newtypes::{CommunityId, LocalUserId, PersonId, PostId},
- source::{
- community::Community,
- email_verification::{EmailVerification, EmailVerificationForm},
- password_reset_request::PasswordResetRequest,
- person_block::PersonBlock,
- post::{Post, PostRead, PostReadForm},
- registration_application::RegistrationApplication,
- secret::Secret,
- site::Site,
- },
- traits::{Crud, Readable},
- DbPool,
-};
-use lemmy_db_views::local_user_view::{LocalUserSettingsView, LocalUserView};
-use lemmy_db_views_actor::{
- community_person_ban_view::CommunityPersonBanView,
- community_view::CommunityView,
-};
-use lemmy_utils::{
- claims::Claims,
- email::send_email,
- settings::structs::{FederationConfig, Settings},
- utils::generate_random_string,
- LemmyError,
- Sensitive,
-};
-use url::Url;
-
-pub async fn blocking<F, T>(pool: &DbPool, f: F) -> Result<T, LemmyError>
-where
- F: FnOnce(&diesel::PgConnection) -> T + Send + 'static,
- T: Send + 'static,
-{
- let pool = pool.clone();
- let blocking_span = tracing::info_span!("blocking operation");
- let res = actix_web::web::block(move || {
- let entered = blocking_span.enter();
- let conn = pool.get()?;
- let res = (f)(&conn);
- drop(entered);
- Ok(res) as Result<T, LemmyError>
- })
- .await?;
-
- res
-}
-
-#[tracing::instrument(skip_all)]
-pub async fn is_mod_or_admin(
- pool: &DbPool,
- person_id: PersonId,
- community_id: CommunityId,
-) -> Result<(), LemmyError> {
- let is_mod_or_admin = blocking(pool, move |conn| {
- CommunityView::is_mod_or_admin(conn, person_id, community_id)
- })
- .await?;
- if !is_mod_or_admin {
- return Err(LemmyError::from_message("not_a_mod_or_admin"));
- }
- Ok(())
-}
-
-pub fn is_admin(local_user_view: &LocalUserView) -> Result<(), LemmyError> {
- if !local_user_view.person.admin {
- return Err(LemmyError::from_message("not_an_admin"));
- }
- Ok(())
-}
-
-#[tracing::instrument(skip_all)]
-pub async fn get_post(post_id: PostId, pool: &DbPool) -> Result<Post, LemmyError> {
- blocking(pool, move |conn| Post::read(conn, post_id))
- .await?
- .map_err(LemmyError::from)
- .map_err(|e| e.with_message("couldnt_find_post"))
-}
-
-#[tracing::instrument(skip_all)]
-pub async fn mark_post_as_read(
- person_id: PersonId,
- post_id: PostId,
- pool: &DbPool,
-) -> Result<PostRead, LemmyError> {
- let post_read_form = PostReadForm { post_id, person_id };
-
- blocking(pool, move |conn| {
- PostRead::mark_as_read(conn, &post_read_form)
- })
- .await?
- .map_err(LemmyError::from)
- .map_err(|e| e.with_message("couldnt_mark_post_as_read"))
-}
-
-#[tracing::instrument(skip_all)]
-pub async fn mark_post_as_unread(
- person_id: PersonId,
- post_id: PostId,
- pool: &DbPool,
-) -> Result<usize, LemmyError> {
- let post_read_form = PostReadForm { post_id, person_id };
-
- blocking(pool, move |conn| {
- PostRead::mark_as_unread(conn, &post_read_form)
- })
- .await?
- .map_err(LemmyError::from)
- .map_err(|e| e.with_message("couldnt_mark_post_as_read"))
-}
-
-#[tracing::instrument(skip_all)]
-pub async fn get_local_user_view_from_jwt(
- jwt: &str,
- pool: &DbPool,
- secret: &Secret,
-) -> Result<LocalUserView, LemmyError> {
- let claims = Claims::decode(jwt, &secret.jwt_secret)
- .map_err(LemmyError::from)
- .map_err(|e| e.with_message("not_logged_in"))?
- .claims;
- let local_user_id = LocalUserId(claims.sub);
- let local_user_view =
- blocking(pool, move |conn| LocalUserView::read(conn, local_user_id)).await??;
- // Check for a site ban
- if local_user_view.person.banned {
- return Err(LemmyError::from_message("site_ban"));
- }
-
- // Check for user deletion
- if local_user_view.person.deleted {
- return Err(LemmyError::from_message("deleted"));
- }
-
- check_validator_time(&local_user_view.local_user.validator_time, &claims)?;
-
- Ok(local_user_view)
-}
-
-/// Checks if user's token was issued before user's password reset.
-pub fn check_validator_time(
- validator_time: &chrono::NaiveDateTime,
- claims: &Claims,
-) -> Result<(), LemmyError> {
- let user_validation_time = validator_time.timestamp();
- if user_validation_time > claims.iat {
- Err(LemmyError::from_message("not_logged_in"))
- } else {
- Ok(())
- }
-}
-
-#[tracing::instrument(skip_all)]
-pub async fn get_local_user_view_from_jwt_opt(
- jwt: Option<&Sensitive<String>>,
- pool: &DbPool,
- secret: &Secret,
-) -> Result<Option<LocalUserView>, LemmyError> {
- match jwt {
- Some(jwt) => Ok(Some(get_local_user_view_from_jwt(jwt, pool, secret).await?)),
- None => Ok(None),
- }
-}
-
-#[tracing::instrument(skip_all)]
-pub async fn get_local_user_settings_view_from_jwt(
- jwt: &Sensitive<String>,
- pool: &DbPool,
- secret: &Secret,
-) -> Result<LocalUserSettingsView, LemmyError> {
- let claims = Claims::decode(jwt.as_ref(), &secret.jwt_secret)
- .map_err(LemmyError::from)
- .map_err(|e| e.with_message("not_logged_in"))?
- .claims;
- let local_user_id = LocalUserId(claims.sub);
- let local_user_view = blocking(pool, move |conn| {
- LocalUserSettingsView::read(conn, local_user_id)
- })
- .await??;
- // Check for a site ban
- if local_user_view.person.banned {
- return Err(LemmyError::from_message("site_ban"));
- }
-
- check_validator_time(&local_user_view.local_user.validator_time, &claims)?;
-
- Ok(local_user_view)
-}
-
-#[tracing::instrument(skip_all)]
-pub async fn get_local_user_settings_view_from_jwt_opt(
- jwt: Option<&Sensitive<String>>,
- pool: &DbPool,
- secret: &Secret,
-) -> Result<Option<LocalUserSettingsView>, LemmyError> {
- match jwt {
- Some(jwt) => Ok(Some(
- get_local_user_settings_view_from_jwt(jwt, pool, secret).await?,
- )),
- None => Ok(None),
- }
-}
-
-#[tracing::instrument(skip_all)]
-pub async fn check_community_ban(
- person_id: PersonId,
- community_id: CommunityId,
- pool: &DbPool,
-) -> Result<(), LemmyError> {
- let is_banned =
- move |conn: &'_ _| CommunityPersonBanView::get(conn, person_id, community_id).is_ok();
- if blocking(pool, is_banned).await? {
- Err(LemmyError::from_message("community_ban"))
- } else {
- Ok(())
- }
-}
-
-#[tracing::instrument(skip_all)]
-pub async fn check_community_deleted_or_removed(
- community_id: CommunityId,
- pool: &DbPool,
-) -> Result<(), LemmyError> {
- let community = blocking(pool, move |conn| Community::read(conn, community_id))
- .await?
- .map_err(LemmyError::from)
- .map_err(|e| e.with_message("couldnt_find_community"))?;
- if community.deleted || community.removed {
- Err(LemmyError::from_message("deleted"))
- } else {
- Ok(())
- }
-}
-
-pub fn check_post_deleted_or_removed(post: &Post) -> Result<(), LemmyError> {
- if post.deleted || post.removed {
- Err(LemmyError::from_message("deleted"))
- } else {
- Ok(())
- }
-}
-
-#[tracing::instrument(skip_all)]
-pub async fn check_person_block(
- my_id: PersonId,
- potential_blocker_id: PersonId,
- pool: &DbPool,
-) -> Result<(), LemmyError> {
- let is_blocked = move |conn: &'_ _| PersonBlock::read(conn, potential_blocker_id, my_id).is_ok();
- if blocking(pool, is_blocked).await? {
- Err(LemmyError::from_message("person_block"))
- } else {
- Ok(())
- }
-}
-
-#[tracing::instrument(skip_all)]
-pub async fn check_downvotes_enabled(score: i16, pool: &DbPool) -> Result<(), LemmyError> {
- if score == -1 {
- let site = blocking(pool, Site::read_simple).await??;
- if !site.enable_downvotes {
- return Err(LemmyError::from_message("downvotes_disabled"));
- }
- }
- Ok(())
-}
-
-#[tracing::instrument(skip_all)]
-pub async fn check_private_instance(
- local_user_view: &Option<LocalUserView>,
- pool: &DbPool,
-) -> Result<(), LemmyError> {
- if local_user_view.is_none() {
- let site = blocking(pool, Site::read_simple).await??;
- if site.private_instance {
- return Err(LemmyError::from_message("instance_is_private"));
- }
- }
- Ok(())
-}
-
-#[tracing::instrument(skip_all)]
-pub async fn build_federated_instances(
- pool: &DbPool,
- federation_config: &FederationConfig,
- hostname: &str,
-) -> Result<Option<FederatedInstances>, LemmyError> {
- let federation = federation_config.to_owned();
- if federation.enabled {
- let distinct_communities = blocking(pool, move |conn| {
- Community::distinct_federated_communities(conn)
- })
- .await??;
-
- let allowed = federation.allowed_instances;
- let blocked = federation.blocked_instances;
-
- let mut linked = distinct_communities
- .iter()
- .map(|actor_id| Ok(Url::parse(actor_id)?.host_str().unwrap_or("").to_string()))
- .collect::<Result<Vec<String>, LemmyError>>()?;
-
- if let Some(allowed) = allowed.as_ref() {
- linked.extend_from_slice(allowed);
- }
-
- if let Some(blocked) = blocked.as_ref() {
- linked.retain(|a| !blocked.contains(a) && !a.eq(hostname));
- }
-
- // Sort and remove dupes
- linked.sort_unstable();
- linked.dedup();
-
- Ok(Some(FederatedInstances {
- linked,
- allowed,
- blocked,
- }))
- } else {
- Ok(None)
- }
-}
-
-/// Checks the password length
-pub fn password_length_check(pass: &str) -> Result<(), LemmyError> {
- if !(10..=60).contains(&pass.len()) {
- Err(LemmyError::from_message("invalid_password"))
- } else {
- Ok(())
- }
-}
-
-/// Checks the site description length
-pub fn site_description_length_check(description: &str) -> Result<(), LemmyError> {
- if description.len() > 150 {
- Err(LemmyError::from_message("site_description_length_overflow"))
- } else {
- Ok(())
- }
-}
-
-/// Checks for a honeypot. If this field is filled, fail the rest of the function
-pub fn honeypot_check(honeypot: &Option<String>) -> Result<(), LemmyError> {
- if honeypot.is_some() {
- Err(LemmyError::from_message("honeypot_fail"))
- } else {
- Ok(())
- }
-}
-
-pub fn send_email_to_user(
- local_user_view: &LocalUserView,
- subject_text: &str,
- body_text: &str,
- comment_content: &str,
- settings: &Settings,
-) {
- if local_user_view.person.banned || !local_user_view.local_user.send_notifications_to_email {
- return;
- }
-
- if let Some(user_email) = &local_user_view.local_user.email {
- let subject = &format!(
- "{} - {} {}",
- subject_text, settings.hostname, local_user_view.person.name,
- );
- let html = &format!(
- "<h1>{}</h1><br><div>{} - {}</div><br><a href={}/inbox>inbox</a>",
- body_text,
- local_user_view.person.name,
- comment_content,
- settings.get_protocol_and_hostname()
- );
- match send_email(
- subject,
- user_email,
- &local_user_view.person.name,
- html,
- settings,
- ) {
- Ok(_o) => _o,
- Err(e) => tracing::error!("{}", e),
- };
- }
-}
-
-pub async fn send_password_reset_email(
- local_user_view: &LocalUserView,
- pool: &DbPool,
- settings: &Settings,
-) -> Result<(), LemmyError> {
- // Generate a random token
- let token = generate_random_string();
-
- // Insert the row
- let token2 = token.clone();
- let local_user_id = local_user_view.local_user.id;
- blocking(pool, move |conn| {
- PasswordResetRequest::create_token(conn, local_user_id, &token2)
- })
- .await??;
-
- let email = &local_user_view.local_user.email.to_owned().expect("email");
- let subject = &format!("Password reset for {}", local_user_view.person.name);
- let protocol_and_hostname = settings.get_protocol_and_hostname();
- 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);
- send_email(subject, email, &local_user_view.person.name, html, settings)
-}
-
-/// Send a verification email
-pub async fn send_verification_email(
- local_user_id: LocalUserId,
- new_email: &str,
- username: &str,
- pool: &DbPool,
- settings: &Settings,
-) -> Result<(), LemmyError> {
- let form = EmailVerificationForm {
- local_user_id,
- email: new_email.to_string(),
- verification_token: generate_random_string(),
- };
- let verify_link = format!(
- "{}/verify_email/{}",
- settings.get_protocol_and_hostname(),
- &form.verification_token
- );
- blocking(pool, move |conn| EmailVerification::create(conn, &form)).await??;
-
- let subject = format!("Verify your email address for {}", settings.hostname);
- let body = format!(
- concat!(
- "Please click the link below to verify your email address ",
- "for the account @{}@{}. Ignore this email if the account isn't yours.<br><br>",
- "<a href=\"{}\">Verify your email</a>"
- ),
- username, settings.hostname, verify_link
- );
- send_email(&subject, new_email, username, &body, settings)?;
-
- Ok(())
-}
-
-pub fn send_email_verification_success(
- local_user_view: &LocalUserView,
- settings: &Settings,
-) -> Result<(), LemmyError> {
- let email = &local_user_view.local_user.email.to_owned().expect("email");
- let subject = &format!("Email verified for {}", local_user_view.person.actor_id);
- let html = "Your email has been verified.";
- send_email(subject, email, &local_user_view.person.name, html, settings)
-}
-
-pub fn send_application_approved_email(
- local_user_view: &LocalUserView,
- settings: &Settings,
-) -> Result<(), LemmyError> {
- let email = &local_user_view.local_user.email.to_owned().expect("email");
- let subject = &format!(
- "Registration approved for {}",
- local_user_view.person.actor_id
- );
- let html = &format!(
- "Your registration application has been approved. Welcome to {}!",
- settings.hostname
- );
- send_email(subject, email, &local_user_view.person.name, html, settings)
-}
-
-pub async fn check_registration_application(
- site: &Site,
- local_user_view: &LocalUserView,
- pool: &DbPool,
-) -> Result<(), LemmyError> {
- if site.require_application
- && !local_user_view.local_user.accepted_application
- && !local_user_view.person.admin
- {
- // Fetch the registration, see if its denied
- let local_user_id = local_user_view.local_user.id;
- let registration = blocking(pool, move |conn| {
- RegistrationApplication::find_by_local_user_id(conn, local_user_id)
- })
- .await??;
- if registration.deny_reason.is_some() {
- return Err(LemmyError::from_message("registration_denied"));
- } else {
- return Err(LemmyError::from_message("registration_application_pending"));
- }
- }
- Ok(())
-}
-
-/// TODO this check should be removed after https://github.com/LemmyNet/lemmy/issues/868 is done.
-pub async fn check_private_instance_and_federation_enabled(
- pool: &DbPool,
- settings: &Settings,
-) -> Result<(), LemmyError> {
- let site_opt = blocking(pool, Site::read_simple).await?;
-
- if let Ok(site) = site_opt {
- if site.private_instance && settings.federation.enabled {
- return Err(LemmyError::from_message(
- "Cannot have both private instance and federation enabled.",
- ));
- }
- }
- Ok(())
-}