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//! Shows basic usage of users and permissions.
use std::time::Duration;
use bonsaidb::client::url::Url;
use bonsaidb::client::AsyncClient;
use bonsaidb::core::admin::{PermissionGroup, Role};
use bonsaidb::core::connection::{
AsyncStorageConnection, Authentication, AuthenticationMethod, SensitiveString,
};
use bonsaidb::core::permissions::bonsai::{
BonsaiAction, DatabaseAction, DocumentAction, ServerAction,
use bonsaidb::core::permissions::{Permissions, Statement};
use bonsaidb::core::schema::{InsertError, SerializedCollection};
use bonsaidb::local::config::Builder;
use bonsaidb::server::{Server, ServerConfiguration};
mod support;
use support::schema::Shape;
#[tokio::main]
async fn main() -> anyhow::Result<()> {
drop(env_logger::try_init());
let server = setup_server().await?;
// This example shows off basic user authentication as well as the ability
// to assume roles. The server will be configured to only allow connected
// users the ability to authenticate. All other usage will result in
// PermissionDenied errors.
//
// We will create a user that belongs to a PermissionGroup that gives it the
// ability to insert and read documents, but not delete them. This example
// will demonstrate how to authenticate as the user, and shows how
// permission is denied before authentication but is allowed on the
// authenticated client.
// The other bit of setup we are going to do is create an administrators
// group that the user belongs to. This permission group will allow the user
// to assume any identity (user or role) in BonsaiDb. We are going to show
// how to use this to escalate privileges by creating a "superuser" Role,
// which belongs to a "superusers" group that grants all privileges.
// This example will finish by using the authenticated client to assume the
// Superuser role and delete the record we inserted. While this is a complex
// setup, it is a powerful pattern in Role Based Access Control which can
// help protect users from accidentally performing a dangerous operation.
// Create a database user, or get its ID if it already existed.
let user_id = match server.create_user("ecton").await {
Ok(id) => {
// Set the user's password.
server
.set_user_password("ecton", SensitiveString::from("hunter2"))
.await?;
id
}
Err(bonsaidb::core::Error::UniqueKeyViolation {
existing_document, ..
}) => existing_document.id.deserialize()?,
Err(other) => anyhow::bail!(other),
// Create an basic-users permission group, or get its ID if it already existed.
let admin = server.admin().await;
let users_group_id = match (PermissionGroup {
name: String::from("basic-users"),
statements: vec![Statement::for_any()
.allowing(&BonsaiAction::Database(DatabaseAction::Document(
DocumentAction::Insert,
)))
DocumentAction::Get,
)))],
.push_into_async(&admin)
.await)
{
Ok(doc) => doc.header.id,
Err(InsertError {
error:
bonsaidb::core::Error::UniqueKeyViolation {
},
..
// Make our user a member of the basic-users group.
.add_permission_group_to_user(user_id, users_group_id)
// Create an superusers group, which has all permissions
let superusers_group_id = match (PermissionGroup {
name: String::from("superusers"),
statements: vec![Statement::allow_all_for_any_resource()],
let superuser_role_id = match (Role {
name: String::from("superuser"),
groups: vec![superusers_group_id],
let administrators_group_id = match (PermissionGroup {
name: String::from("administrators"),
statements: vec![
Statement::for_any().allowing(&BonsaiAction::Server(ServerAction::AssumeIdentity))
],
// Make our user a member of the administrators group.
.add_permission_group_to_user(user_id, administrators_group_id)
// Give a moment for the listeners to start.
tokio::time::sleep(Duration::from_millis(10)).await;
let client = AsyncClient::build(Url::parse("bonsaidb://localhost")?)
.with_certificate(
.certificate_chain()
.await?
.into_end_entity_certificate(),
)
.build()?;
let db = client.database::<Shape>("my-database").await?;
// Before authenticating, inserting a shape shouldn't work.
match Shape::new(3).push_into_async(&db).await {
error: bonsaidb::core::Error::PermissionDenied(denied),
}) => {
log::info!(
"Permission was correctly denied before logging in: {:?}",
denied
);
_ => unreachable!("permission shouldn't be allowed"),
// Now, log in and try again.
let authenticated_client = client
.authenticate(Authentication::password(
"ecton",
SensitiveString(String::from("hunter2")),
)?)
let db = authenticated_client
.database::<Shape>("my-database")
let shape_doc = Shape::new(3).push_into_async(&db).await?;
println!("Successully inserted document {shape_doc:?}");
// The "basic-users" group and "administrators" groups do not give
// permission to delete documents:
assert!(matches!(
shape_doc.delete_async(&db).await.unwrap_err(),
bonsaidb::core::Error::PermissionDenied { .. }
));
// But we can assume the Superuser role to delete the document:
let as_superuser =
Role::assume_identity_async(superuser_role_id, &authenticated_client).await?;
shape_doc
.delete_async(&as_superuser.database::<Shape>("my-database").await?)
// Shut the server down gracefully (or forcefully after 5 seconds).
server.shutdown(Some(Duration::from_secs(5))).await?;
Ok(())
async fn setup_server() -> anyhow::Result<Server> {
let server = Server::open(
ServerConfiguration::new("users-server-data.bonsaidb")
.default_permissions(Permissions::from(
Statement::for_any()
.allowing(&BonsaiAction::Server(ServerAction::Connect))
.allowing(&BonsaiAction::Server(ServerAction::Authenticate(
AuthenticationMethod::PasswordHash,
))),
))
.with_schema::<Shape>()?,
if server.certificate_chain().await.is_err() {
server.install_self_signed_certificate(true).await?;
server.create_database::<Shape>("my-database", true).await?;
// Spawn our QUIC-based protocol listener.
let task_server = server.clone();
tokio::spawn(async move { task_server.listen_on(5645).await });
Ok(server)
#[test]
fn runs() {
main().unwrap();