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flotte-user-management/src/database/users.rs

192 lines
6.7 KiB
Rust

// flotte-user-management server for managing users, roles and permissions
// Copyright (C) 2020 trivernis
// See LICENSE for more information
use std::sync::Arc;
use parking_lot::Mutex;
use zeroize::{Zeroize, Zeroizing};
use crate::database::models::UserRecord;
use crate::database::tokens::{SessionTokens, TokenStore};
use crate::database::user_roles::UserRoles;
use crate::database::{DatabaseResult, PostgresPool, Table};
use crate::utils::error::DBError;
use crate::utils::{create_salt, hash_password};
/// Table that stores users with their email addresses and hashed passwords
#[derive(Clone)]
pub struct Users {
pool: PostgresPool,
user_roles: UserRoles,
token_store: Arc<Mutex<TokenStore>>,
}
impl Table for Users {
fn new(pool: PostgresPool) -> Self {
Self {
user_roles: UserRoles::new(PostgresPool::clone(&pool)),
pool,
token_store: Arc::new(Mutex::new(TokenStore::new())),
}
}
fn init(&self) -> DatabaseResult<()> {
self.pool.get()?.batch_execute(
"CREATE TABLE IF NOT EXISTS users (
id SERIAL PRIMARY KEY,
name VARCHAR(255) NOT NULL,
email VARCHAR(255) UNIQUE NOT NULL,
password_hash BYTEA NOT NULL,
salt BYTEA NOT NULL
);",
)?;
Ok(())
}
}
impl Users {
/// Creates a new user and returns an error if the user already exists.
/// When creating the user first a salt is generated, then the password is hashed
/// with BCrypt and the given salt. The salt and the hashed password are then stored into the database
pub fn create_user(
&self,
name: String,
email: String,
password: String,
) -> DatabaseResult<UserRecord> {
let mut connection = self.pool.get()?;
let mut password = Zeroizing::new(password);
log::trace!("Creating user {} with email {}", name, email);
if !connection
.query("SELECT email FROM users WHERE email = $1", &[&email])?
.is_empty()
{
log::trace!("Failed to create user: Record exists!");
return Err(DBError::RecordExists);
}
let salt = Zeroizing::new(create_salt());
let pw_hash =
hash_password(password.as_bytes(), &*salt).map_err(|e| DBError::GenericError(e))?;
password.zeroize();
let row = connection.query_one("
INSERT INTO users (name, email, password_hash, salt) VALUES ($1, $2, $3, $4) RETURNING *;
", &[&name, &email, &pw_hash.to_vec(), &salt.to_vec()])?;
Ok(UserRecord::from_ordered_row(&row))
}
/// Creates new tokens for a user login that can be used by services
/// that need those tokens to verify a user login
pub fn create_tokens(
&self,
email: &String,
password: &String,
) -> DatabaseResult<SessionTokens> {
if self.validate_login(&email, password)? {
let mut connection = self.pool.get()?;
let row = connection.query_one("SELECT id FROM users WHERE email = $1", &[&email])?;
let id: i32 = row.get(0);
let tokens = SessionTokens::new(id);
tokens.store(&mut self.token_store.lock())?;
Ok(tokens)
} else {
Err(DBError::GenericError("Invalid password".to_string()))
}
}
/// Validates a request token and returns if it's valid and the
/// ttl of the token
pub fn validate_request_token(&self, token: &String) -> DatabaseResult<(bool, i32)> {
let mut store = self.token_store.lock();
let entry = store.get_by_request_token(&token);
if let Some(entry) = entry {
Ok((true, entry.request_ttl()))
} else {
Ok((false, -1))
}
}
/// Validates a refresh token and returns if it's valid and the ttl
pub fn validate_refresh_token(&self, token: &String) -> DatabaseResult<(bool, i32)> {
let mut store = self.token_store.lock();
let entry = store.get_by_refresh_token(&token);
if let Some(entry) = entry {
Ok((true, entry.refresh_ttl()))
} else {
Ok((false, -1))
}
}
/// Returns a new request token for a given refresh token
/// if the refresh token is valid
pub fn refresh_tokens(&self, refresh_token: &String) -> DatabaseResult<SessionTokens> {
let mut token_store = self.token_store.lock();
let tokens = token_store.get_by_refresh_token(refresh_token);
if let Some(mut tokens) = tokens.and_then(|t| SessionTokens::from_entry(t)) {
tokens.refresh();
tokens.store(&mut token_store)?;
Ok(tokens)
} else {
Err(DBError::GenericError("Invalid refresh token!".to_string()))
}
}
pub fn delete_tokens(&self, request_token: &String) -> DatabaseResult<bool> {
let mut token_store = self.token_store.lock();
let tokens = token_store.get_by_request_token(request_token);
if let Some(tokens) = tokens {
tokens.invalidate();
Ok(true)
} else {
Err(DBError::GenericError("Invalid request token!".to_string()))
}
}
/// Returns if the user has the given permission
pub fn has_permission(&self, id: i32, permission: &str) -> DatabaseResult<bool> {
let mut connection = self.pool.get()?;
let row = connection.query_opt(
"\
SELECT * FROM user_roles, role_permissions, permissions
WHERE user_roles.user_id = $1
AND user_roles.role_id = role_permissions.role_id
AND role_permissions.permission_id = permissions.id
AND permissions.name = $2
LIMIT 1
",
&[&id, &permission],
)?;
Ok(row.is_some())
}
/// Validates the login data of the user by creating the hash for the given password
/// and comparing it with the database entry
fn validate_login(&self, email: &String, password: &String) -> DatabaseResult<bool> {
let mut connection = self.pool.get()?;
let row = connection
.query_opt(
"SELECT password_hash, salt FROM users WHERE email = $1",
&[&email],
)?
.ok_or(DBError::GenericError(format!(
"No user with the email '{}' found",
&email
)))?;
let original_pw_hash: Zeroizing<Vec<u8>> = Zeroizing::new(row.get(0));
let salt: Zeroizing<Vec<u8>> = Zeroizing::new(row.get(1));
let pw_hash =
hash_password(password.as_bytes(), &*salt).map_err(|e| DBError::GenericError(e))?;
Ok(pw_hash == *original_pw_hash.as_slice())
}
}