Sign up/in/out and authentication.

backend/src/db.rs

@@ -2,14 +2,15 @@ use std::{fmt::Display, fs::{self, File}, path::Path, io::Read};
 
 use itertools::Itertools;
 use chrono::{prelude::*, Duration};
-use rusqlite::{params, Params, OptionalExtension};
+use rusqlite::{named_params, OptionalExtension, params, Params};
 use r2d2::Pool;
 use r2d2_sqlite::SqliteConnectionManager;
 use rand::distributions::{Alphanumeric, DistString};
 
 use crate::consts;
-use crate::hash::hash;
+use crate::hash::{hash, verify_password};
 use crate::model;
+use crate::user::*;
 
 const CURRENT_DB_VERSION: u32 = 1;
 
@@ -50,20 +51,22 @@ pub enum SignUpResult {
 
 #[derive(Debug)]
 pub enum ValidationResult {
+    UnknownUser,
     ValidationExpired,
-    OK,
+    Ok(String, i32), // Returns token and user id.
 }
 
 #[derive(Debug)]
 pub enum SignInResult {
-    NotValidToken,
-    OK,
+    UserNotFound,
+    PasswordsDontMatch,
+    Ok(String, i32), // Returns token and user id.
 }
 
 #[derive(Debug)]
 pub enum AuthenticationResult {
     NotValidToken,
-    OK,
+    Ok(i32), // Returns user id.
 }
 
 #[derive(Clone)]
@@ -92,6 +95,13 @@ impl Connection {
         Self::create_connection(SqliteConnectionManager::file(file))
     }
 
+    fn create_connection(manager: SqliteConnectionManager) -> Result<Connection> {;
+        let pool = r2d2::Pool::new(manager).unwrap();
+        let connection = Connection { pool };
+        connection.create_or_update()?;
+        Ok(connection)
+    }
+
     /// Called after the connection has been established for creating or updating the database.
     /// The 'Version' table tracks the current state of the database.
     fn create_or_update(&self) -> Result<()> {
@@ -111,7 +121,7 @@ impl Connection {
             }
         };
 
-        while Connection::update_to_next_version(version, &tx)? {
+        while Self::update_to_next_version(version, &tx)? {
             version += 1;
         }
 
@@ -120,13 +130,6 @@ impl Connection {
         Ok(())
     }
 
-    fn create_connection(manager: SqliteConnectionManager) -> Result<Connection> {;
-        let pool = r2d2::Pool::new(manager).unwrap();
-        let connection = Connection { pool };
-        connection.create_or_update()?;
-        Ok(connection)
-    }
-
     fn update_to_next_version(current_version: u32, tx: &rusqlite::Transaction) -> Result<bool> {
         let next_version = current_version + 1;
 
@@ -191,6 +194,17 @@ impl Connection {
         }).map_err(DBError::from)
     }
 
+    pub fn get_user_login_info(&self, token: &str) -> Result<UserLoginInfo> {
+        let con = self.pool.get()?;
+        con.query_row("SELECT [last_login_datetime], [ip], [user_agent] FROM [UserLoginToken] WHERE [token] = ?1", [token], |r| {
+            Ok(UserLoginInfo {
+                last_login_datetime: r.get("last_login_datetime")?,
+                ip: r.get("ip")?,
+                user_agent: r.get("user_agent")?,
+            })
+        }).map_err(DBError::from)
+    }
+
     ///
     pub fn sign_up(&self, password: &str, email: &str) -> Result<SignUpResult> {
         self.sign_up_with_given_time(password, email, Utc::now())
@@ -223,20 +237,79 @@ impl Connection {
         Ok(SignUpResult::UserCreatedWaitingForValidation(token))
     }
 
-    pub fn validation(&self, token: &str, validation_time: Duration) -> Result<ValidationResult> {
-        todo!()
+    pub fn validation(&self, token: &str, validation_time: Duration, ip: &str, user_agent: &str) -> Result<ValidationResult> {
+        let mut con = self.pool.get()?;
+        let tx = con.transaction()?;
+        let user_id =
+            match tx.query_row("SELECT [id], [creation_datetime] FROM [User] WHERE [validation_token] = ?1", [token], |r| {
+                Ok((r.get::<&str, i32>("id")?, r.get::<&str, DateTime<Utc>>("creation_datetime")?))
+            }).optional()? {
+                Some((id, creation_datetime)) => {
+                    if Utc::now() - creation_datetime > validation_time {
+                        return Ok(ValidationResult::ValidationExpired)
+                    }
+                    tx.execute("UPDATE [User] SET [validation_token] = NULL WHERE [id] = ?1", [id])?;
+                    id
+                },
+                None => {
+                    return Ok(ValidationResult::UnknownUser)
+                },
+            };
+        let token = Connection::create_login_token(&tx, user_id, ip, user_agent)?;
+        tx.commit()?;
+        Ok(ValidationResult::Ok(token, user_id))
     }
 
-    pub fn sign_in(&self, password: &str, email: String) -> Result<SignInResult> {
-        todo!()
+    pub fn sign_in(&self, password: &str, email: &str, ip: &str, user_agent: &str) -> Result<SignInResult> {
+        let mut con = self.pool.get()?;
+        let tx = con.transaction()?;
+        match tx.query_row("SELECT [id], [password] FROM [User] WHERE [email] = ?1", [email], |r| {
+            Ok((r.get::<&str, i32>("id")?, r.get::<&str, String>("password")?))
+        }).optional()? {
+            Some((id, stored_password)) => {
+                if verify_password(password, &stored_password).map_err(DBError::from_dyn_error)? {
+                    let token = Connection::create_login_token(&tx, id, ip, user_agent)?;
+                    tx.commit()?;
+                    Ok(SignInResult::Ok(token, id))
+                } else {
+                    Ok(SignInResult::PasswordsDontMatch)
+                }
+            },
+            None => {
+                Ok(SignInResult::UserNotFound)
+            },
+        }
     }
 
-    pub fn authentication(&self, token: &str) -> Result<AuthenticationResult> {
-        todo!()
+    pub fn authentication(&self, token: &str, ip: &str, user_agent: &str) -> Result<AuthenticationResult> {
+        let mut con = self.pool.get()?;
+        let tx = con.transaction()?;
+        match tx.query_row("SELECT [id], [user_id] FROM [UserLoginToken] WHERE [token] = ?1", [token], |r| {
+            Ok((r.get::<&str, i32>("id")?, r.get::<&str, i32>("user_id")?))
+        }).optional()? {
+            Some((login_id, user_id)) => {
+                tx.execute("UPDATE [UserLoginToken] SET [last_login_datetime] = ?2, [ip] = ?3, [user_agent] = ?4 WHERE [id] = ?1", params![login_id, Utc::now(), ip, user_agent])?;
+                tx.commit()?;
+                Ok(AuthenticationResult::Ok(user_id))
+            },
+            None =>
+                Ok(AuthenticationResult::NotValidToken)
+        }
     }
 
-    pub fn logout(&self, token: &str) -> Result<()> {
-        todo!()
+    pub fn sign_out(&self, token: &str) -> Result<()> {
+        let mut con = self.pool.get()?;
+        let tx = con.transaction()?;
+        match tx.query_row("SELECT [id] FROM [UserLoginToken] WHERE [token] = ?1", [token], |r| {
+            Ok(r.get::<&str, i32>("id")?)
+        }).optional()? {
+            Some(login_id) => {
+                tx.execute("DELETE FROM [UserLoginToken] WHERE [id] = ?1", params![login_id])?;
+                tx.commit()?
+            },
+            None => (),
+        }
+        Ok(())
     }
 
     /// Execute a given SQL file.
@@ -252,6 +325,13 @@ impl Connection {
         let con = self.pool.get()?;
         con.execute(sql, params).map_err(DBError::from)
     }
+
+    // Return the token.
+    fn create_login_token(tx: &rusqlite::Transaction, user_id: i32, ip: &str, user_agent: &str) -> Result<String> {
+        let token = generate_token();
+        tx.execute("INSERT INTO [UserLoginToken] ([user_id], [last_login_datetime], [token], [ip], [user_agent]) VALUES (?1, ?2, ?3, ?4, ?5)", params![user_id, Utc::now(), token, ip, user_agent])?;
+        Ok(token)
+    }
 }
 
 fn load_sql_file<P: AsRef<Path> + Display>(sql_file: P) -> Result<String> {
@@ -301,16 +381,185 @@ mod tests {
 
     #[test]
     fn sign_up_to_an_unvalidated_already_existing_user() -> Result<()> {
-        todo!()
+        let connection = Connection::new_in_memory()?;
+        let token = generate_token();
+        connection.execute_sql("
+            INSERT INTO [User] ([id], [email], [name], [password], [creation_datetime], [validation_token])
+                VALUES (
+                    1,
+                    'paul@test.org',
+                    'paul',
+                    '$argon2id$v=19$m=4096,t=3,p=1$1vtXcacYjUHZxMrN6b2Xng$wW8Z59MIoMcsIljnjHmxn3EBcc5ymEySZPUVXHlRxcY',
+                    0,
+                    :token
+                );", named_params! { ":token": token })?;
+        match connection.sign_up("12345", "paul@test.org")? {
+            SignUpResult::UserCreatedWaitingForValidation(_) => (), // Nominal case.
+            other => panic!("{:?}", other),
+        }
+        Ok(())
     }
 
+    #[test]
     fn sign_up_then_send_validation_at_time() -> Result<()> {
-        todo!()
+        let connection = Connection::new_in_memory()?;
+        let validation_token =
+            match connection.sign_up("12345", "paul@test.org")? {
+                SignUpResult::UserCreatedWaitingForValidation(token) => token, // Nominal case.
+                other => panic!("{:?}", other),
+            };
+        match connection.validation(&validation_token, Duration::hours(1), "127.0.0.1", "Mozilla/5.0")? {
+            ValidationResult::Ok(_, _) => (), // Nominal case.
+            other => panic!("{:?}", other),
+        }
+        Ok(())
     }
 
+    #[test]
     fn sign_up_then_send_validation_too_late() -> Result<()> {
-        todo!()
+        let connection = Connection::new_in_memory()?;
+        let validation_token =
+            match connection.sign_up_with_given_time("12345", "paul@test.org", Utc::now() - Duration::days(1))? {
+                SignUpResult::UserCreatedWaitingForValidation(token) => token, // Nominal case.
+                other => panic!("{:?}", other),
+            };
+        match connection.validation(&validation_token, Duration::hours(1), "127.0.0.1", "Mozilla/5.0")? {
+            ValidationResult::ValidationExpired => (), // Nominal case.
+            other => panic!("{:?}", other),
+        }
+        Ok(())
     }
 
-    //fn sign_up_then_send_validation_then_sign_in()
+    #[test]
+    fn sign_up_then_send_validation_with_bad_token() -> Result<()> {
+        let connection = Connection::new_in_memory()?;
+        let _validation_token =
+            match connection.sign_up("12345", "paul@test.org")? {
+                SignUpResult::UserCreatedWaitingForValidation(token) => token, // Nominal case.
+                other => panic!("{:?}", other),
+            };
+        let random_token = generate_token();
+        match connection.validation(&random_token, Duration::hours(1), "127.0.0.1", "Mozilla/5.0")? {
+            ValidationResult::UnknownUser => (), // Nominal case.
+            other => panic!("{:?}", other),
+        }
+        Ok(())
+    }
+
+    #[test]
+    fn sign_up_then_send_validation_then_sign_in() -> Result<()> {
+        let connection = Connection::new_in_memory()?;
+
+        let password = "12345";
+        let email = "paul@test.org";
+
+        // Sign up.
+        let validation_token =
+            match connection.sign_up(password, email)? {
+                SignUpResult::UserCreatedWaitingForValidation(token) => token, // Nominal case.
+                other => panic!("{:?}", other),
+            };
+
+        // Validation.
+        match connection.validation(&validation_token, Duration::hours(1), "127.0.0.1", "Mozilla/5.0")? {
+            ValidationResult::Ok(_, _) => (),
+            other => panic!("{:?}", other),
+        };
+
+        // Sign in.
+        match connection.sign_in(password, email, "127.0.0.1", "Mozilla/5.0")? {
+            SignInResult::Ok(_, _) => (), // Nominal case.
+            other => panic!("{:?}", other),
+        }
+
+        Ok(())
+    }
+
+    #[test]
+    fn sign_up_then_send_validation_then_authentication() -> Result<()> {
+        let connection = Connection::new_in_memory()?;
+
+        let password = "12345";
+        let email = "paul@test.org";
+
+        // Sign up.
+        let validation_token =
+            match connection.sign_up(password, email)? {
+                SignUpResult::UserCreatedWaitingForValidation(token) => token, // Nominal case.
+                other => panic!("{:?}", other),
+            };
+
+        // Validation.
+        let (authentication_token, user_id) = match connection.validation(&validation_token, Duration::hours(1), "127.0.0.1", "Mozilla")? {
+            ValidationResult::Ok(token, user_id) => (token, user_id),
+            other => panic!("{:?}", other),
+        };
+
+        // Check user login information.
+        let user_login_info_1 = connection.get_user_login_info(&authentication_token)?;
+        assert_eq!(user_login_info_1.ip, "127.0.0.1");
+        assert_eq!(user_login_info_1.user_agent, "Mozilla");
+
+        // Authentication.
+        let _user_id =
+            match connection.authentication(&authentication_token, "192.168.1.1", "Chrome")? {
+                AuthenticationResult::Ok(user_id) => user_id, // Nominal case.
+                other => panic!("{:?}", other),
+            };
+
+        // Check user login information.
+        let user_login_info_2 = connection.get_user_login_info(&authentication_token)?;
+        assert_eq!(user_login_info_2.ip, "192.168.1.1");
+        assert_eq!(user_login_info_2.user_agent, "Chrome");
+
+        Ok(())
+    }
+
+    #[test]
+    fn sign_up_then_send_validation_then_sign_out_then_sign_in() -> Result<()> {
+        let connection = Connection::new_in_memory()?;
+
+        let password = "12345";
+        let email = "paul@test.org";
+
+        // Sign up.
+        let validation_token =
+            match connection.sign_up(password, email)? {
+                SignUpResult::UserCreatedWaitingForValidation(token) => token, // Nominal case.
+                other => panic!("{:?}", other),
+            };
+
+        // Validation.
+        let (authentication_token_1, user_id_1) =
+            match connection.validation(&validation_token, Duration::hours(1), "127.0.0.1", "Mozilla")? {
+                ValidationResult::Ok(token, user_id) => (token, user_id),
+                other => panic!("{:?}", other),
+            };
+
+        // Check user login information.
+        let user_login_info_1 = connection.get_user_login_info(&authentication_token_1)?;
+        assert_eq!(user_login_info_1.ip, "127.0.0.1");
+        assert_eq!(user_login_info_1.user_agent, "Mozilla");
+
+        // Sign out.
+        connection.sign_out(&authentication_token_1)?;
+
+        // Sign in.
+        let (authentication_token_2, user_id_2) =
+            match connection.sign_in(password, email, "192.168.1.1", "Chrome")? {
+                SignInResult::Ok(token, user_id) => (token, user_id),
+                other => panic!("{:?}", other),
+            };
+
+        assert_eq!(user_id_1, user_id_2);
+        assert_ne!(authentication_token_1, authentication_token_2);
+
+        // Check user login information.
+        let user_login_info_2 = connection.get_user_login_info(&authentication_token_2)?;
+
+        assert_eq!(user_login_info_2.ip, "192.168.1.1");
+        assert_eq!(user_login_info_2.user_agent, "Chrome");
+
+        Ok(())
+    }
 }

backend/src/hash.rs

@@ -13,4 +13,34 @@ pub fn hash(password: &str) -> Result<String, Box<dyn std::error::Error>> {
     let salt = SaltString::generate(&mut OsRng);
     let argon2 = Argon2::default();
     argon2.hash_password(password.as_bytes(), &salt).map(|h| h.to_string()).map_err(|e| e.into())
+}
+
+pub fn verify_password(password: &str, hashed_password: &str) -> Result<bool, Box<dyn std::error::Error>> {
+    let argon2 = Argon2::default();
+    let parsed_hash = PasswordHash::new(hashed_password)?;
+    Ok(argon2.verify_password(password.as_bytes(), &parsed_hash).is_ok())
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn simple_case() -> Result<(), Box<dyn std::error::Error>> {
+        let password = "12345";
+        let hash = hash(password)?;
+        println!("hash: {}", &hash);
+        assert!(verify_password(password, &hash)?);
+        assert!(!verify_password("54321", &hash)?);
+        Ok(())
+    }
+
+    #[test]
+    fn password_with_special_characters() -> Result<(), Box<dyn std::error::Error>> {
+        let password = "éà ä_\\😺🎮🇨🇭";
+        let hash = hash(password)?;
+        println!("hash: {}", &hash);
+        assert!(verify_password(password, &hash)?);
+        Ok(())
+    }
 }

backend/src/main.rs

@@ -13,6 +13,7 @@ mod consts;
 mod db;
 mod hash;
 mod model;
+mod user;
 
 #[derive(Template)]
 #[template(path = "home.html")]

backend/src/user.rs

@@ -0,0 +1,11 @@
+use chrono::prelude::*;
+
+pub struct User {
+
+}
+
+pub struct UserLoginInfo {
+    pub last_login_datetime: DateTime<Utc>,
+    pub ip: String,
+    pub user_agent: String,
+}