Implement login-with-device

20 files changed, 842 insertions, 8 deletions

diff --git a/migrations/mysql/2023-06-17-200424_create_auth_requests_table/down.sql b/migrations/mysql/2023-06-17-200424_create_auth_requests_table/down.sql
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/migrations/mysql/2023-06-17-200424_create_auth_requests_table/down.sql
diff --git a/migrations/mysql/2023-06-17-200424_create_auth_requests_table/up.sql b/migrations/mysql/2023-06-17-200424_create_auth_requests_table/up.sql
new file mode 100644
index 00000000..2366c3b9
--- /dev/null
+++ b/migrations/mysql/2023-06-17-200424_create_auth_requests_table/up.sql
@@ -0,0 +1,19 @@
+CREATE TABLE auth_requests (
+	uuid            CHAR(36) NOT NULL PRIMARY KEY,
+	user_uuid	    CHAR(36) NOT NULL,
+	organization_uuid           CHAR(36),
+	request_device_identifier         CHAR(36) NOT NULL,
+	device_type         INTEGER NOT NULL,
+	request_ip         TEXT NOT NULL,
+	response_device_id         CHAR(36),
+	access_code         TEXT NOT NULL,
+	public_key         TEXT NOT NULL,
+	enc_key         TEXT NOT NULL,
+	master_password_hash         TEXT NOT NULL,
+	approved         BOOLEAN,
+	creation_date         DATETIME NOT NULL,
+	response_date         DATETIME,
+	authentication_date         DATETIME,
+	FOREIGN KEY(user_uuid) REFERENCES users(uuid),
+	FOREIGN KEY(organization_uuid) REFERENCES organizations(uuid)
+);
\ No newline at end of file
diff --git a/migrations/postgresql/2023-06-17-200424_create_auth_requests_table/down.sql b/migrations/postgresql/2023-06-17-200424_create_auth_requests_table/down.sql
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/migrations/postgresql/2023-06-17-200424_create_auth_requests_table/down.sql
diff --git a/migrations/postgresql/2023-06-17-200424_create_auth_requests_table/up.sql b/migrations/postgresql/2023-06-17-200424_create_auth_requests_table/up.sql
new file mode 100644
index 00000000..8d495e72
--- /dev/null
+++ b/migrations/postgresql/2023-06-17-200424_create_auth_requests_table/up.sql
@@ -0,0 +1,19 @@
+CREATE TABLE auth_requests (
+	uuid            CHAR(36) NOT NULL PRIMARY KEY,
+	user_uuid	    CHAR(36) NOT NULL,
+	organization_uuid           CHAR(36),
+	request_device_identifier         CHAR(36) NOT NULL,
+	device_type         INTEGER NOT NULL,
+	request_ip         TEXT NOT NULL,
+	response_device_id         CHAR(36),
+	access_code         TEXT NOT NULL,
+	public_key         TEXT NOT NULL,
+	enc_key         TEXT NOT NULL,
+	master_password_hash         TEXT NOT NULL,
+	approved         BOOLEAN,
+	creation_date         TIMESTAMP NOT NULL,
+	response_date         TIMESTAMP,
+	authentication_date         TIMESTAMP,
+	FOREIGN KEY(user_uuid) REFERENCES users(uuid),
+	FOREIGN KEY(organization_uuid) REFERENCES organizations(uuid)
+);
\ No newline at end of file
diff --git a/migrations/sqlite/2023-06-17-200424_create_auth_requests_table/down.sql b/migrations/sqlite/2023-06-17-200424_create_auth_requests_table/down.sql
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/migrations/sqlite/2023-06-17-200424_create_auth_requests_table/down.sql
diff --git a/migrations/sqlite/2023-06-17-200424_create_auth_requests_table/up.sql b/migrations/sqlite/2023-06-17-200424_create_auth_requests_table/up.sql
new file mode 100644
index 00000000..f16922ec
--- /dev/null
+++ b/migrations/sqlite/2023-06-17-200424_create_auth_requests_table/up.sql
@@ -0,0 +1,19 @@
+CREATE TABLE auth_requests (
+	uuid            TEXT NOT NULL PRIMARY KEY,
+	user_uuid	    TEXT NOT NULL,
+	organization_uuid           TEXT,
+	request_device_identifier         TEXT NOT NULL,
+	device_type         INTEGER NOT NULL,
+	request_ip         TEXT NOT NULL,
+	response_device_id         TEXT,
+	access_code         TEXT NOT NULL,
+	public_key         TEXT NOT NULL,
+	enc_key         TEXT NOT NULL,
+	master_password_hash         TEXT NOT NULL,
+	approved         BOOLEAN,
+	creation_date         DATETIME NOT NULL,
+	response_date         DATETIME,
+	authentication_date         DATETIME,
+	FOREIGN KEY(user_uuid) REFERENCES users(uuid),
+	FOREIGN KEY(organization_uuid) REFERENCES organizations(uuid)
+);
\ No newline at end of file
diff --git a/src/api/core/accounts.rs b/src/api/core/accounts.rs
index 6c7d8ed5..3feccd80 100644
--- a/src/api/core/accounts.rs
+++ b/src/api/core/accounts.rs
@@ -1,13 +1,14 @@
+use crate::db::DbPool;
 use chrono::Utc;
 use rocket::serde::json::Json;
 use serde_json::Value;
 
 use crate::{
     api::{
-        core::log_user_event, register_push_device, unregister_push_device, EmptyResult, JsonResult, JsonUpcase,
-        Notify, NumberOrString, PasswordData, UpdateType,
+        core::log_user_event, register_push_device, unregister_push_device, AnonymousNotify, EmptyResult, JsonResult,
+        JsonUpcase, Notify, NumberOrString, PasswordData, UpdateType,
     },
-    auth::{decode_delete, decode_invite, decode_verify_email, Headers},
+    auth::{decode_delete, decode_invite, decode_verify_email, ClientHeaders, Headers},
     crypto,
     db::{models::*, DbConn},
     mail, CONFIG,
@@ -51,6 +52,11 @@ pub fn routes() -> Vec<rocket::Route> {
         put_device_token,
         put_clear_device_token,
         post_clear_device_token,
+        post_auth_request,
+        get_auth_request,
+        put_auth_request,
+        get_auth_request_response,
+        get_auth_requests,
     ]
 }
 
@@ -996,3 +1002,211 @@ async fn put_clear_device_token(uuid: &str, mut conn: DbConn) -> EmptyResult {
 async fn post_clear_device_token(uuid: &str, conn: DbConn) -> EmptyResult {
     put_clear_device_token(uuid, conn).await
 }
+
+#[derive(Debug, Deserialize)]
+#[allow(non_snake_case)]
+struct AuthRequestRequest {
+    accessCode: String,
+    deviceIdentifier: String,
+    email: String,
+    publicKey: String,
+    #[serde(alias = "type")]
+    _type: i32,
+}
+
+#[post("/auth-requests", data = "<data>")]
+async fn post_auth_request(
+    data: Json<AuthRequestRequest>,
+    headers: ClientHeaders,
+    mut conn: DbConn,
+    nt: Notify<'_>,
+) -> JsonResult {
+    let data = data.into_inner();
+
+    let user = match User::find_by_mail(&data.email, &mut conn).await {
+        Some(user) => user,
+        None => {
+            err!("AuthRequest doesn't exist")
+        }
+    };
+
+    let mut auth_request = AuthRequest::new(
+        user.uuid.clone(),
+        data.deviceIdentifier.clone(),
+        headers.device_type,
+        headers.ip.ip.to_string(),
+        data.accessCode,
+        data.publicKey,
+    );
+    auth_request.save(&mut conn).await?;
+
+    nt.send_auth_request(&user.uuid, &auth_request.uuid, &data.deviceIdentifier, &mut conn).await;
+
+    Ok(Json(json!({
+        "id": auth_request.uuid,
+        "publicKey": auth_request.public_key,
+        "requestDeviceType": DeviceType::from_i32(auth_request.device_type).to_string(),
+        "requestIpAddress": auth_request.request_ip,
+        "key": null,
+        "masterPasswordHash": null,
+        "creationDate": auth_request.creation_date.and_utc(),
+        "responseDate": null,
+        "requestApproved": false,
+        "origin": CONFIG.domain_origin(),
+        "object": "auth-request"
+    })))
+}
+
+#[get("/auth-requests/<uuid>")]
+async fn get_auth_request(uuid: &str, mut conn: DbConn) -> JsonResult {
+    let auth_request = match AuthRequest::find_by_uuid(uuid, &mut conn).await {
+        Some(auth_request) => auth_request,
+        None => {
+            err!("AuthRequest doesn't exist")
+        }
+    };
+
+    let response_date_utc = auth_request.response_date.map(|response_date| response_date.and_utc());
+
+    Ok(Json(json!(
+        {
+            "id": uuid,
+            "publicKey": auth_request.public_key,
+            "requestDeviceType": DeviceType::from_i32(auth_request.device_type).to_string(),
+            "requestIpAddress": auth_request.request_ip,
+            "key": auth_request.enc_key,
+            "masterPasswordHash": auth_request.master_password_hash,
+            "creationDate": auth_request.creation_date.and_utc(),
+            "responseDate": response_date_utc,
+            "requestApproved": auth_request.approved,
+            "origin": CONFIG.domain_origin(),
+            "object":"auth-request"
+        }
+    )))
+}
+
+#[derive(Debug, Deserialize)]
+#[allow(non_snake_case)]
+struct AuthResponseRequest {
+    deviceIdentifier: String,
+    key: String,
+    masterPasswordHash: String,
+    requestApproved: bool,
+}
+
+#[put("/auth-requests/<uuid>", data = "<data>")]
+async fn put_auth_request(
+    uuid: &str,
+    data: Json<AuthResponseRequest>,
+    mut conn: DbConn,
+    ant: AnonymousNotify<'_>,
+    nt: Notify<'_>,
+) -> JsonResult {
+    let data = data.into_inner();
+    let mut auth_request: AuthRequest = match AuthRequest::find_by_uuid(uuid, &mut conn).await {
+        Some(auth_request) => auth_request,
+        None => {
+            err!("AuthRequest doesn't exist")
+        }
+    };
+
+    auth_request.approved = Some(data.requestApproved);
+    auth_request.enc_key = data.key;
+    auth_request.master_password_hash = data.masterPasswordHash;
+    auth_request.response_device_id = Some(data.deviceIdentifier.clone());
+    auth_request.save(&mut conn).await?;
+
+    if auth_request.approved.unwrap_or(false) {
+        ant.send_auth_response(&auth_request.user_uuid, &auth_request.uuid).await;
+        nt.send_auth_response(&auth_request.user_uuid, &auth_request.uuid, data.deviceIdentifier, &mut conn).await;
+    }
+
+    let response_date_utc = auth_request.response_date.map(|response_date| response_date.and_utc());
+
+    Ok(Json(json!(
+        {
+            "id": uuid,
+            "publicKey": auth_request.public_key,
+            "requestDeviceType": DeviceType::from_i32(auth_request.device_type).to_string(),
+            "requestIpAddress": auth_request.request_ip,
+            "key": auth_request.enc_key,
+            "masterPasswordHash": auth_request.master_password_hash,
+            "creationDate": auth_request.creation_date.and_utc(),
+            "responseDate": response_date_utc,
+            "requestApproved": auth_request.approved,
+            "origin": CONFIG.domain_origin(),
+            "object":"auth-request"
+        }
+    )))
+}
+
+#[get("/auth-requests/<uuid>/response?<code>")]
+async fn get_auth_request_response(uuid: &str, code: &str, mut conn: DbConn) -> JsonResult {
+    let auth_request = match AuthRequest::find_by_uuid(uuid, &mut conn).await {
+        Some(auth_request) => auth_request,
+        None => {
+            err!("AuthRequest doesn't exist")
+        }
+    };
+
+    if !auth_request.check_access_code(code) {
+        err!("Access code invalid doesn't exist")
+    }
+
+    let response_date_utc = auth_request.response_date.map(|response_date| response_date.and_utc());
+
+    Ok(Json(json!(
+        {
+            "id": uuid,
+            "publicKey": auth_request.public_key,
+            "requestDeviceType": DeviceType::from_i32(auth_request.device_type).to_string(),
+            "requestIpAddress": auth_request.request_ip,
+            "key": auth_request.enc_key,
+            "masterPasswordHash": auth_request.master_password_hash,
+            "creationDate": auth_request.creation_date.and_utc(),
+            "responseDate": response_date_utc,
+            "requestApproved": auth_request.approved,
+            "origin": CONFIG.domain_origin(),
+            "object":"auth-request"
+        }
+    )))
+}
+
+#[get("/auth-requests")]
+async fn get_auth_requests(headers: Headers, mut conn: DbConn) -> JsonResult {
+    let auth_requests = AuthRequest::find_by_user(&headers.user.uuid, &mut conn).await;
+
+    Ok(Json(json!({
+        "data": auth_requests
+            .iter()
+            .filter(|request| request.approved.is_none())
+            .map(|request| {
+            let response_date_utc = request.response_date.map(|response_date| response_date.and_utc());
+
+            json!({
+                "id": request.uuid,
+                "publicKey": request.public_key,
+                "requestDeviceType": DeviceType::from_i32(request.device_type).to_string(),
+                "requestIpAddress": request.request_ip,
+                "key": request.enc_key,
+                "masterPasswordHash": request.master_password_hash,
+                "creationDate": request.creation_date.and_utc(),
+                "responseDate": response_date_utc,
+                "requestApproved": request.approved,
+                "origin": CONFIG.domain_origin(),
+                "object":"auth-request"
+            })
+        }).collect::<Vec<Value>>(),
+        "continuationToken": null,
+        "object": "list"
+    })))
+}
+
+pub async fn purge_auth_requests(pool: DbPool) {
+    debug!("Purging auth requests");
+    if let Ok(mut conn) = pool.get().await {
+        AuthRequest::purge_expired_auth_requests(&mut conn).await;
+    } else {
+        error!("Failed to get DB connection while purging trashed ciphers")
+    }
+}
diff --git a/src/api/core/mod.rs b/src/api/core/mod.rs
index f7e912cf..f1424688 100644
--- a/src/api/core/mod.rs
+++ b/src/api/core/mod.rs
@@ -8,6 +8,7 @@ mod public;
 mod sends;
 pub mod two_factor;
 
+pub use accounts::purge_auth_requests;
 pub use ciphers::{purge_trashed_ciphers, CipherData, CipherSyncData, CipherSyncType};
 pub use emergency_access::{emergency_notification_reminder_job, emergency_request_timeout_job};
 pub use events::{event_cleanup_job, log_event, log_user_event};
diff --git a/src/api/identity.rs b/src/api/identity.rs
index 048ac17d..8dbb78f6 100644
--- a/src/api/identity.rs
+++ b/src/api/identity.rs
@@ -155,7 +155,27 @@ async fn _password_login(
 
     // Check password
     let password = data.password.as_ref().unwrap();
-    if !user.check_valid_password(password) {
+    if let Some(auth_request_uuid) = data.auth_request.clone() {
+        if let Some(auth_request) = AuthRequest::find_by_uuid(auth_request_uuid.as_str(), conn).await {
+            if !auth_request.check_access_code(password) {
+                err!(
+                    "Username or access code is incorrect. Try again",
+                    format!("IP: {}. Username: {}.", ip.ip, username),
+                    ErrorEvent {
+                        event: EventType::UserFailedLogIn,
+                    }
+                )
+            }
+        } else {
+            err!(
+                "Auth request not found. Try again.",
+                format!("IP: {}. Username: {}.", ip.ip, username),
+                ErrorEvent {
+                    event: EventType::UserFailedLogIn,
+                }
+            )
+        }
+    } else if !user.check_valid_password(password) {
         err!(
             "Username or password is incorrect. Try again",
             format!("IP: {}. Username: {}.", ip.ip, username),
@@ -646,6 +666,8 @@ struct ConnectData {
     #[field(name = uncased("two_factor_remember"))]
     #[field(name = uncased("twofactorremember"))]
     two_factor_remember: Option<i32>,
+    #[field(name = uncased("authrequest"))]
+    auth_request: Option<String>,
 }
 
 fn _check_is_some<T>(value: &Option<T>, msg: &str) -> EmptyResult {
diff --git a/src/api/mod.rs b/src/api/mod.rs
index f3f79210..fd181fda 100644
--- a/src/api/mod.rs
+++ b/src/api/mod.rs
@@ -13,6 +13,7 @@ pub use crate::api::{
     admin::catchers as admin_catchers,
     admin::routes as admin_routes,
     core::catchers as core_catchers,
+    core::purge_auth_requests,
     core::purge_sends,
     core::purge_trashed_ciphers,
     core::routes as core_routes,
@@ -22,7 +23,7 @@ pub use crate::api::{
     icons::routes as icons_routes,
     identity::routes as identity_routes,
     notifications::routes as notifications_routes,
-    notifications::{start_notification_server, Notify, UpdateType},
+    notifications::{start_notification_server, AnonymousNotify, Notify, UpdateType, WS_ANONYMOUS_SUBSCRIPTIONS},
     push::{
         push_cipher_update, push_folder_update, push_logout, push_send_update, push_user_update, register_push_device,
         unregister_push_device,
diff --git a/src/api/notifications.rs b/src/api/notifications.rs
index 5a073723..7e76021b 100644
--- a/src/api/notifications.rs
+++ b/src/api/notifications.rs
@@ -36,10 +36,19 @@ static WS_USERS: Lazy<Arc<WebSocketUsers>> = Lazy::new(|| {
     })
 });
 
-use super::{push_cipher_update, push_folder_update, push_logout, push_send_update, push_user_update};
+pub static WS_ANONYMOUS_SUBSCRIPTIONS: Lazy<Arc<AnonymousWebSocketSubscriptions>> = Lazy::new(|| {
+    Arc::new(AnonymousWebSocketSubscriptions {
+        map: Arc::new(dashmap::DashMap::new()),
+    })
+});
+
+use super::{
+    push::push_auth_request, push::push_auth_response, push_cipher_update, push_folder_update, push_logout,
+    push_send_update, push_user_update,
+};
 
 pub fn routes() -> Vec<Route> {
-    routes![websockets_hub]
+    routes![websockets_hub, anonymous_websockets_hub]
 }
 
 #[derive(FromForm, Debug)]
@@ -74,6 +83,29 @@ impl Drop for WSEntryMapGuard {
     }
 }
 
+struct WSAnonymousEntryMapGuard {
+    subscriptions: Arc<AnonymousWebSocketSubscriptions>,
+    token: String,
+    addr: IpAddr,
+}
+
+impl WSAnonymousEntryMapGuard {
+    fn new(subscriptions: Arc<AnonymousWebSocketSubscriptions>, token: String, addr: IpAddr) -> Self {
+        Self {
+            subscriptions,
+            token,
+            addr,
+        }
+    }
+}
+
+impl Drop for WSAnonymousEntryMapGuard {
+    fn drop(&mut self) {
+        info!("Closing WS connection from {}", self.addr);
+        self.subscriptions.map.remove(&self.token);
+    }
+}
+
 #[get("/hub?<data..>")]
 fn websockets_hub<'r>(
     ws: rocket_ws::WebSocket,
@@ -144,6 +176,72 @@ fn websockets_hub<'r>(
     })
 }
 
+#[get("/anonymous-hub?<token..>")]
+fn anonymous_websockets_hub<'r>(
+    ws: rocket_ws::WebSocket,
+    token: String,
+    ip: ClientIp,
+) -> Result<rocket_ws::Stream!['r], Error> {
+    let addr = ip.ip;
+    info!("Accepting Anonymous Rocket WS connection from {addr}");
+
+    let (mut rx, guard) = {
+        let subscriptions = Arc::clone(&WS_ANONYMOUS_SUBSCRIPTIONS);
+
+        // Add a channel to send messages to this client to the map
+        let (tx, rx) = tokio::sync::mpsc::channel::<Message>(100);
+        subscriptions.map.insert(token.clone(), tx);
+
+        // Once the guard goes out of scope, the connection will have been closed and the entry will be deleted from the map
+        (rx, WSAnonymousEntryMapGuard::new(subscriptions, token, addr))
+    };
+
+    Ok({
+        rocket_ws::Stream! { ws => {
+            let mut ws = ws;
+            let _guard = guard;
+            let mut interval = tokio::time::interval(Duration::from_secs(15));
+            loop {
+                tokio::select! {
+                    res = ws.next() =>  {
+                        match res {
+                            Some(Ok(message)) => {
+                                match message {
+                                    // Respond to any pings
+                                    Message::Ping(ping) => yield Message::Pong(ping),
+                                    Message::Pong(_) => {/* Ignored */},
+
+                                    // We should receive an initial message with the protocol and version, and we will reply to it
+                                    Message::Text(ref message) => {
+                                        let msg = message.strip_suffix(RECORD_SEPARATOR as char).unwrap_or(message);
+
+                                        if serde_json::from_str(msg).ok() == Some(INITIAL_MESSAGE) {
+                                            yield Message::binary(INITIAL_RESPONSE);
+                                            continue;
+                                        }
+                                    }
+                                    // Just echo anything else the client sends
+                                    _ => yield message,
+                                }
+                            }
+                            _ => break,
+                        }
+                    }
+
+                    res = rx.recv() => {
+                        match res {
+                            Some(res) => yield res,
+                            None => break,
+                        }
+                    }
+
+                    _ = interval.tick() => yield Message::Ping(create_ping())
+                }
+            }
+        }}
+    })
+}
+
 //
 // Websockets server
 //
@@ -352,6 +450,69 @@ impl WebSocketUsers {
             push_send_update(ut, send, acting_device_uuid, conn).await;
         }
     }
+
+    pub async fn send_auth_request(
+        &self,
+        user_uuid: &String,
+        auth_request_uuid: &String,
+        acting_device_uuid: &String,
+        conn: &mut DbConn,
+    ) {
+        let data = create_update(
+            vec![("Id".into(), auth_request_uuid.clone().into()), ("UserId".into(), user_uuid.clone().into())],
+            UpdateType::AuthRequest,
+            Some(acting_device_uuid.to_string()),
+        );
+        self.send_update(user_uuid, &data).await;
+
+        if CONFIG.push_enabled() {
+            push_auth_request(user_uuid.to_string(), auth_request_uuid.to_string(), conn).await;
+        }
+    }
+
+    pub async fn send_auth_response(
+        &self,
+        user_uuid: &String,
+        auth_response_uuid: &str,
+        approving_device_uuid: String,
+        conn: &mut DbConn,
+    ) {
+        let data = create_update(
+            vec![("Id".into(), auth_response_uuid.to_owned().into()), ("UserId".into(), user_uuid.clone().into())],
+            UpdateType::AuthRequestResponse,
+            approving_device_uuid.clone().into(),
+        );
+        self.send_update(auth_response_uuid, &data).await;
+
+        if CONFIG.push_enabled() {
+            push_auth_response(user_uuid.to_string(), auth_response_uuid.to_string(), approving_device_uuid, conn)
+                .await;
+        }
+    }
+}
+
+#[derive(Clone)]
+pub struct AnonymousWebSocketSubscriptions {
+    map: Arc<dashmap::DashMap<String, Sender<Message>>>,
+}
+
+impl AnonymousWebSocketSubscriptions {
+    async fn send_update(&self, token: &str, data: &[u8]) {
+        if let Some(sender) = self.map.get(token).map(|v| v.clone()) {
+            if let Err(e) = sender.send(Message::binary(data)).await {
+                error!("Error sending WS update {e}");
+            }
+        }
+    }
+
+    pub async fn send_auth_response(&self, user_uuid: &String, auth_response_uuid: &str) {
+        let data = create_anonymous_update(
+            vec![("Id".into(), auth_response_uuid.to_owned().into()), ("UserId".into(), user_uuid.clone().into())],
+            UpdateType::AuthRequestResponse,
+            user_uuid.to_string(),
+        );
+        self.send_update(auth_response_uuid, &data).await;
+    }
 }
 
 /* Message Structure
@@ -387,6 +548,24 @@ fn create_update(payload: Vec<(Value, Value)>, ut: UpdateType, acting_device_uui
     serialize(value)
 }
 
+fn create_anonymous_update(payload: Vec<(Value, Value)>, ut: UpdateType, user_id: String) -> Vec<u8> {
+    use rmpv::Value as V;
+
+    let value = V::Array(vec![
+        1.into(),
+        V::Map(vec![]),
+        V::Nil,
+        "AuthRequestResponseRecieved".into(),
+        V::Array(vec![V::Map(vec![
+            ("Type".into(), (ut as i32).into()),
+            ("Payload".into(), payload.into()),
+            ("UserId".into(), user_id.into()),
+        ])]),
+    ]);
+
+    serialize(value)
+}
+
 fn create_ping() -> Vec<u8> {
     serialize(Value::Array(vec![6.into()]))
 }
@@ -420,6 +599,7 @@ pub enum UpdateType {
 }
 
 pub type Notify<'a> = &'a rocket::State<Arc<WebSocketUsers>>;
+pub type AnonymousNotify<'a> = &'a rocket::State<Arc<AnonymousWebSocketSubscriptions>>;
 
 pub fn start_notification_server() -> Arc<WebSocketUsers> {
     let users = Arc::clone(&WS_USERS);
diff --git a/src/api/push.rs b/src/api/push.rs
index da9255a6..e6a931e6 100644
--- a/src/api/push.rs
+++ b/src/api/push.rs
@@ -255,3 +255,40 @@ async fn send_to_push_relay(notification_data: Value) {
         error!("An error occured while sending a send update to the push relay: {}", e);
     };
 }
+
+pub async fn push_auth_request(user_uuid: String, auth_request_uuid: String, conn: &mut crate::db::DbConn) {
+    if Device::check_user_has_push_device(user_uuid.as_str(), conn).await {
+        tokio::task::spawn(send_to_push_relay(json!({
+            "userId": user_uuid,
+            "organizationId": (),
+            "deviceId": null,
+            "identifier": null,
+            "type": UpdateType::AuthRequest as i32,
+            "payload": {
+                "id": auth_request_uuid,
+                "userId": user_uuid,
+            }
+        })));
+    }
+}
+
+pub async fn push_auth_response(
+    user_uuid: String,
+    auth_request_uuid: String,
+    approving_device_uuid: String,
+    conn: &mut crate::db::DbConn,
+) {
+    if Device::check_user_has_push_device(user_uuid.as_str(), conn).await {
+        tokio::task::spawn(send_to_push_relay(json!({
+            "userId": user_uuid,
+            "organizationId": (),
+            "deviceId": approving_device_uuid,
+            "identifier": approving_device_uuid,
+            "type": UpdateType::AuthRequestResponse as i32,
+            "payload": {
+                "id": auth_request_uuid,
+                "userId": user_uuid,
+            }
+        })));
+    }
+}
diff --git a/src/config.rs b/src/config.rs
index 1173afb9..d54b356b 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -409,6 +409,10 @@ make_config! {
         /// Event cleanup schedule |> Cron schedule of the job that cleans old events from the event table.
         /// Defaults to daily. Set blank to disable this job.
         event_cleanup_schedule:   String, false,  def,    "0 10 0 * * *".to_string();
+        /// Auth Request cleanup schedule |> Cron schedule of the job that cleans old auth requests from the auth request.
+        /// Defaults to every minute. Set blank to disable this job.
+        auth_request_purge_schedule:   String, false,  def,    "30 * * * * *".to_string();
+
     },
 
     /// General settings
@@ -893,6 +897,10 @@ fn validate_config(cfg: &ConfigItems) -> Result<(), Error> {
         err!("`EVENT_CLEANUP_SCHEDULE` is not a valid cron expression")
     }
 
+    if !cfg.auth_request_purge_schedule.is_empty() && cfg.auth_request_purge_schedule.parse::<Schedule>().is_err() {
+        err!("`AUTH_REQUEST_PURGE_SCHEDULE` is not a valid cron expression")
+    }
+
     if !cfg.disable_admin_token {
         match cfg.admin_token.as_ref() {
             Some(t) if t.starts_with("$argon2") => {
diff --git a/src/db/models/auth_request.rs b/src/db/models/auth_request.rs
new file mode 100644
index 00000000..0b129ac1
--- /dev/null
+++ b/src/db/models/auth_request.rs
@@ -0,0 +1,148 @@
+use crate::crypto::ct_eq;
+use chrono::{NaiveDateTime, Utc};
+
+db_object! {
+    #[derive(Debug, Identifiable, Queryable, Insertable, AsChangeset, Deserialize, Serialize)]
+    #[diesel(table_name = auth_requests)]
+    #[diesel(treat_none_as_null = true)]
+    #[diesel(primary_key(uuid))]
+    pub struct AuthRequest {
+        pub uuid: String,
+        pub user_uuid: String,
+        pub organization_uuid: Option<String>,
+
+        pub request_device_identifier: String,
+        pub device_type: i32,  // https://github.com/bitwarden/server/blob/master/src/Core/Enums/DeviceType.cs
+
+        pub request_ip: String,
+        pub response_device_id: Option<String>,
+
+        pub access_code: String,
+        pub public_key: String,
+
+        pub enc_key: String,
+
+        pub master_password_hash: String,
+        pub approved: Option<bool>,
+        pub creation_date: NaiveDateTime,
+        pub response_date: Option<NaiveDateTime>,
+
+        pub authentication_date: Option<NaiveDateTime>,
+    }
+}
+
+impl AuthRequest {
+    pub fn new(
+        user_uuid: String,
+        request_device_identifier: String,
+        device_type: i32,
+        request_ip: String,
+        access_code: String,
+        public_key: String,
+    ) -> Self {
+        let now = Utc::now().naive_utc();
+
+        Self {
+            uuid: crate::util::get_uuid(),
+            user_uuid,
+            organization_uuid: None,
+
+            request_device_identifier,
+            device_type,
+            request_ip,
+            response_device_id: None,
+            access_code,
+            public_key,
+            enc_key: String::new(),
+            master_password_hash: String::new(),
+            approved: None,
+            creation_date: now,
+            response_date: None,
+            authentication_date: None,
+        }
+    }
+}
+
+use crate::db::DbConn;
+
+use crate::api::EmptyResult;
+use crate::error::MapResult;
+
+impl AuthRequest {
+    pub async fn save(&mut self, conn: &mut DbConn) -> EmptyResult {
+        db_run! { conn:
+            sqlite, mysql {
+                match diesel::replace_into(auth_requests::table)
+                    .values(AuthRequestDb::to_db(self))
+                    .execute(conn)
+                {
+                    Ok(_) => Ok(()),
+                    // Record already exists and causes a Foreign Key Violation because replace_into() wants to delete the record first.
+                    Err(diesel::result::Error::DatabaseError(diesel::result::DatabaseErrorKind::ForeignKeyViolation, _)) => {
+                        diesel::update(auth_requests::table)
+                            .filter(auth_requests::uuid.eq(&self.uuid))
+                            .set(AuthRequestDb::to_db(self))
+                            .execute(conn)
+                            .map_res("Error auth_request")
+                    }
+                    Err(e) => Err(e.into()),
+                }.map_res("Error auth_request")
+            }
+            postgresql {
+                let value = AuthRequestDb::to_db(self);
+                diesel::insert_into(auth_requests::table)
+                    .values(&value)
+                    .on_conflict(auth_requests::uuid)
+                    .do_update()
+                    .set(&value)
+                    .execute(conn)
+                    .map_res("Error saving auth_request")
+            }
+        }
+    }
+
+    pub async fn find_by_uuid(uuid: &str, conn: &mut DbConn) -> Option<Self> {
+        db_run! {conn: {
+            auth_requests::table
+                .filter(auth_requests::uuid.eq(uuid))
+                .first::<AuthRequestDb>(conn)
+                .ok()
+                .from_db()
+        }}
+    }
+
+    pub async fn find_by_user(user_uuid: &str, conn: &mut DbConn) -> Vec<Self> {
+        db_run! {conn: {
+            auth_requests::table
+                .filter(auth_requests::user_uuid.eq(user_uuid))
+                .load::<AuthRequestDb>(conn).expect("Error loading auth_requests").from_db()
+        }}
+    }
+
+    pub async fn find_created_before(dt: &NaiveDateTime, conn: &mut DbConn) -> Vec<Self> {
+        db_run! {conn: {
+            auth_requests::table
+                .filter(auth_requests::creation_date.lt(dt))
+                .load::<AuthRequestDb>(conn).expect("Error loading auth_requests").from_db()
+        }}
+    }
+
+    pub async fn delete(&self, conn: &mut DbConn) -> EmptyResult {
+        db_run! { conn: {
+            diesel::delete(auth_requests::table.filter(auth_requests::uuid.eq(&self.uuid)))
+                .execute(conn)
+                .map_res("Error deleting auth request")
+        }}
+    }
+
+    pub fn check_access_code(&self, access_code: &str) -> bool {
+        ct_eq(&self.access_code, access_code)
+    }
+
+    pub async fn purge_expired_auth_requests(conn: &mut DbConn) {
+        let expiry_time = Utc::now().naive_utc() - chrono::Duration::minutes(5); //after 5 minutes, clients reject the request
+        for auth_request in Self::find_created_before(&expiry_time, conn).await {
+            auth_request.delete(conn).await.ok();
+        }
+    }
+}
diff --git a/src/db/models/device.rs b/src/db/models/device.rs
index 78519737..b80b47a1 100644
--- a/src/db/models/device.rs
+++ b/src/db/models/device.rs
@@ -1,6 +1,7 @@
 use chrono::{NaiveDateTime, Utc};
 
 use crate::{crypto, CONFIG};
+use core::fmt;
 
 db_object! {
     #[derive(Identifiable, Queryable, Insertable, AsChangeset)]
@@ -225,3 +226,90 @@ impl Device {
         }}
     }
 }
+
+pub enum DeviceType {
+    Android = 0,
+    Ios = 1,
+    ChromeExtension = 2,
+    FirefoxExtension = 3,
+    OperaExtension = 4,
+    EdgeExtension = 5,
+    WindowsDesktop = 6,
+    MacOsDesktop = 7,
+    LinuxDesktop = 8,
+    ChromeBrowser = 9,
+    FirefoxBrowser = 10,
+    OperaBrowser = 11,
+    EdgeBrowser = 12,
+    IEBrowser = 13,
+    UnknownBrowser = 14,
+    AndroidAmazon = 15,
+    Uwp = 16,
+    SafariBrowser = 17,
+    VivaldiBrowser = 18,
+    VivaldiExtension = 19,
+    SafariExtension = 20,
+    Sdk = 21,
+    Server = 22,
+}
+
+impl fmt::Display for DeviceType {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            DeviceType::Android => write!(f, "Android"),
+            DeviceType::Ios => write!(f, "iOS"),
+            DeviceType::ChromeExtension => write!(f, "Chrome Extension"),
+            DeviceType::FirefoxExtension => write!(f, "Firefox Extension"),
+            DeviceType::OperaExtension => write!(f, "Opera Extension"),
+            DeviceType::EdgeExtension => write!(f, "Edge Extension"),
+            DeviceType::WindowsDesktop => write!(f, "Windows Desktop"),
+            DeviceType::MacOsDesktop => write!(f, "MacOS Desktop"),
+            DeviceType::LinuxDesktop => write!(f, "Linux Desktop"),
+            DeviceType::ChromeBrowser => write!(f, "Chrome Browser"),
+            DeviceType::FirefoxBrowser => write!(f, "Firefox Browser"),
+            DeviceType::OperaBrowser => write!(f, "Opera Browser"),
+            DeviceType::EdgeBrowser => write!(f, "Edge Browser"),
+            DeviceType::IEBrowser => write!(f, "Internet Explorer"),
+            DeviceType::UnknownBrowser => write!(f, "Unknown Browser"),
+            DeviceType::AndroidAmazon => write!(f, "Android Amazon"),
+            DeviceType::Uwp => write!(f, "UWP"),
+            DeviceType::SafariBrowser => write!(f, "Safari Browser"),
+            DeviceType::VivaldiBrowser => write!(f, "Vivaldi Browser"),
+            DeviceType::VivaldiExtension => write!(f, "Vivaldi Extension"),
+            DeviceType::SafariExtension => write!(f, "Safari Extension"),
+            DeviceType::Sdk => write!(f, "SDK"),
+            DeviceType::Server => write!(f, "Server"),
+        }
+    }
+}
+
+impl DeviceType {
+    pub fn from_i32(value: i32) -> DeviceType {
+        match value {
+            0 => DeviceType::Android,
+            1 => DeviceType::Ios,
+            2 => DeviceType::ChromeExtension,
+            3 => DeviceType::FirefoxExtension,
+            4 => DeviceType::OperaExtension,
+            5 => DeviceType::EdgeExtension,
+            6 => DeviceType::WindowsDesktop,
+            7 => DeviceType::MacOsDesktop,
+            8 => DeviceType::LinuxDesktop,
+            9 => DeviceType::ChromeBrowser,
+            10 => DeviceType::FirefoxBrowser,
+            11 => DeviceType::OperaBrowser,
+            12 => DeviceType::EdgeBrowser,
+            13 => DeviceType::IEBrowser,
+            14 => DeviceType::UnknownBrowser,
+            15 => DeviceType::AndroidAmazon,
+            16 => DeviceType::Uwp,
+            17 => DeviceType::SafariBrowser,
+            18 => DeviceType::VivaldiBrowser,
+            19 => DeviceType::VivaldiExtension,
+            20 => DeviceType::SafariExtension,
+            21 => DeviceType::Sdk,
+            22 => DeviceType::Server,
+            _ => DeviceType::UnknownBrowser,
+        }
+    }
+}
diff --git a/src/db/models/mod.rs b/src/db/models/mod.rs
index 6cbde05f..0379141a 100644
--- a/src/db/models/mod.rs
+++ b/src/db/models/mod.rs
@@ -1,4 +1,5 @@
 mod attachment;
+mod auth_request;
 mod cipher;
 mod collection;
 mod device;
@@ -15,9 +16,10 @@ mod two_factor_incomplete;
 mod user;
 
 pub use self::attachment::Attachment;
+pub use self::auth_request::AuthRequest;
 pub use self::cipher::Cipher;
 pub use self::collection::{Collection, CollectionCipher, CollectionUser};
-pub use self::device::Device;
+pub use self::device::{Device, DeviceType};
 pub use self::emergency_access::{EmergencyAccess, EmergencyAccessStatus, EmergencyAccessType};
 pub use self::event::{Event, EventType};
 pub use self::favorite::Favorite;
diff --git a/src/db/schemas/mysql/schema.rs b/src/db/schemas/mysql/schema.rs
index 695d5bd7..c2b2c961 100644
--- a/src/db/schemas/mysql/schema.rs
+++ b/src/db/schemas/mysql/schema.rs
@@ -286,6 +286,26 @@ table! {
     }
 }
 
+table! {
+    auth_requests  (uuid) {
+        uuid -> Text,
+        user_uuid -> Text,
+        organization_uuid -> Nullable<Text>,
+        request_device_identifier -> Text,
+        device_type -> Integer,
+        request_ip -> Text,
+        response_device_id -> Nullable<Text>,
+        access_code -> Text,
+        public_key -> Text,
+        enc_key -> Text,
+        master_password_hash -> Text,
+        approved -> Nullable<Bool>,
+        creation_date -> Timestamp,
+        response_date -> Nullable<Timestamp>,
+        authentication_date -> Nullable<Timestamp>,
+    }
+}
+
 joinable!(attachments -> ciphers (cipher_uuid));
 joinable!(ciphers -> organizations (organization_uuid));
 joinable!(ciphers -> users (user_uuid));
@@ -312,6 +332,7 @@ joinable!(groups_users -> groups (groups_uuid));
 joinable!(collections_groups -> collections (collections_uuid));
 joinable!(collections_groups -> groups (groups_uuid));
 joinable!(event -> users_organizations (uuid));
+joinable!(auth_requests -> users (user_uuid));
 
 allow_tables_to_appear_in_same_query!(
     attachments,
@@ -335,4 +356,5 @@ allow_tables_to_appear_in_same_query!(
     groups_users,
     collections_groups,
     event,
+    auth_requests,
 );
diff --git a/src/db/schemas/postgresql/schema.rs b/src/db/schemas/postgresql/schema.rs
index 766c03e7..4ae9e821 100644
--- a/src/db/schemas/postgresql/schema.rs
+++ b/src/db/schemas/postgresql/schema.rs
@@ -286,6 +286,26 @@ table! {
     }
 }
 
+table! {
+    auth_requests  (uuid) {
+        uuid -> Text,
+        user_uuid -> Text,
+        organization_uuid -> Nullable<Text>,
+        request_device_identifier -> Text,
+        device_type -> Integer,
+        request_ip -> Text,
+        response_device_id -> Nullable<Text>,
+        access_code -> Text,
+        public_key -> Text,
+        enc_key -> Text,
+        master_password_hash -> Text,
+        approved -> Nullable<Bool>,
+        creation_date -> Timestamp,
+        response_date -> Nullable<Timestamp>,
+        authentication_date -> Nullable<Timestamp>,
+    }
+}
+
 joinable!(attachments -> ciphers (cipher_uuid));
 joinable!(ciphers -> organizations (organization_uuid));
 joinable!(ciphers -> users (user_uuid));
@@ -312,6 +332,7 @@ joinable!(groups_users -> groups (groups_uuid));
 joinable!(collections_groups -> collections (collections_uuid));
 joinable!(collections_groups -> groups (groups_uuid));
 joinable!(event -> users_organizations (uuid));
+joinable!(auth_requests -> users (user_uuid));
 
 allow_tables_to_appear_in_same_query!(
     attachments,
@@ -335,4 +356,5 @@ allow_tables_to_appear_in_same_query!(
     groups_users,
     collections_groups,
     event,
+    auth_requests,
 );
diff --git a/src/db/schemas/sqlite/schema.rs b/src/db/schemas/sqlite/schema.rs
index 031ec7aa..62c04e91 100644
--- a/src/db/schemas/sqlite/schema.rs
+++ b/src/db/schemas/sqlite/schema.rs
@@ -286,6 +286,26 @@ table! {
     }
 }
 
+table! {
+    auth_requests  (uuid) {
+        uuid -> Text,
+        user_uuid -> Text,
+        organization_uuid -> Nullable<Text>,
+        request_device_identifier -> Text,
+        device_type -> Integer,
+        request_ip -> Text,
+        response_device_id -> Nullable<Text>,
+        access_code -> Text,
+        public_key -> Text,
+        enc_key -> Text,
+        master_password_hash -> Text,
+        approved -> Nullable<Bool>,
+        creation_date -> Timestamp,
+        response_date -> Nullable<Timestamp>,
+        authentication_date -> Nullable<Timestamp>,
+    }
+}
+
 joinable!(attachments -> ciphers (cipher_uuid));
 joinable!(ciphers -> organizations (organization_uuid));
 joinable!(ciphers -> users (user_uuid));
@@ -313,6 +333,7 @@ joinable!(groups_users -> groups (groups_uuid));
 joinable!(collections_groups -> collections (collections_uuid));
 joinable!(collections_groups -> groups (groups_uuid));
 joinable!(event -> users_organizations (uuid));
+joinable!(auth_requests -> users (user_uuid));
 
 allow_tables_to_appear_in_same_query!(
     attachments,
@@ -336,4 +357,5 @@ allow_tables_to_appear_in_same_query!(
     groups_users,
     collections_groups,
     event,
+    auth_requests,
 );
diff --git a/src/main.rs b/src/main.rs
index 29eccaea..33d802ee 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -82,9 +82,12 @@ mod mail;
 mod ratelimit;
 mod util;
 
+use crate::api::purge_auth_requests;
+use crate::api::WS_ANONYMOUS_SUBSCRIPTIONS;
 pub use config::CONFIG;
 pub use error::{Error, MapResult};
 use rocket::data::{Limits, ToByteUnit};
+use std::sync::Arc;
 pub use util::is_running_in_docker;
 
 #[rocket::main]
@@ -533,6 +536,7 @@ async fn launch_rocket(pool: db::DbPool, extra_debug: bool) -> Result<(), Error>
         .register([basepath, "/admin"].concat(), api::admin_catchers())
         .manage(pool)
         .manage(api::start_notification_server())
+        .manage(Arc::clone(&WS_ANONYMOUS_SUBSCRIPTIONS))
         .attach(util::AppHeaders())
         .attach(util::Cors())
         .attach(util::BetterLogging(extra_debug))
@@ -608,6 +612,12 @@ fn schedule_jobs(pool: db::DbPool) {
                 }));
             }
 
+            if !CONFIG.auth_request_purge_schedule().is_empty() {
+                sched.add(Job::new(CONFIG.auth_request_purge_schedule().parse().unwrap(), || {
+                    runtime.spawn(purge_auth_requests(pool.clone()));
+                }));
+            }
+
             // Cleanup the event table of records x days old.
             if CONFIG.org_events_enabled()
                 && !CONFIG.event_cleanup_schedule().is_empty()