import ballerina/http;

listener http:Listener securedEP = new(9090,
    secureSocket = {
        key: {
            certFile: "../resource/path/to/public.crt",
            keyFile: "../resource/path/to/private.key"
        }
    }
);

// The service can be secured with Basic auth and can be authorized optionally.
// Using Basic auth with the file user store can be enabled by setting the
// `http:FileUserStoreConfig` configurations.
// Authorization is based on scopes. A scope maps to one or more groups.
// Authorization can be enabled by setting the `string|string[]` type
// configurations.
@http:ServiceConfig {
    auth: [
        {
            fileUserStoreConfig: {},
            scopes: ["admin"]
        }
    ]
}
service /foo on securedEP {

    // It is optional to override the authentication and authorization
    // configurations at the resource levels. Otherwise, the service auth
    // configurations will be applied automatically to the resources as well.
    resource function get bar() returns string {
        return "Hello, World!";
    }
}

Service - Basic Auth File User Store

An HTTP service/resource can be secured using Basic auth and optionally by enforcing authorization. Then, it validates the Basic auth token sent in the Authorization header against the provided configurations. This reads data from a file, which has a TOML format. This stores the usernames, passwords for authentication, and scopes for authorization.
Ballerina uses the concept of scopes for authorization. A resource declared in a service can be bound to one/more scope(s).
In the authorization phase, the scopes of the service/resource are compared against the scope included in the user store for at least one match between the two sets.
Config.toml has defined three users - alice, ldclakmal and eve. Each user has a password and optionally assigned scopes as an array.

For more information on the underlying module, see the Auth module.

import ballerina/http;
listener http:Listener securedEP = new(9090,
    secureSocket = {
        key: {
            certFile: "../resource/path/to/public.crt",
            keyFile: "../resource/path/to/private.key"
        }
    }
);
@http:ServiceConfig {
    auth: [
        {
            fileUserStoreConfig: {},
            scopes: ["admin"]
        }
    ]
}
service /foo on securedEP {

The service can be secured with Basic auth and can be authorized optionally. Using Basic auth with the file user store can be enabled by setting the http:FileUserStoreConfig configurations. Authorization is based on scopes. A scope maps to one or more groups. Authorization can be enabled by setting the string|string[] type configurations.

    resource function get bar() returns string {
        return "Hello, World!";
    }
}

It is optional to override the authentication and authorization configurations at the resource levels. Otherwise, the service auth configurations will be applied automatically to the resources as well.

[[ballerina.auth.users]]
username="alice"
password="alice@123"
scopes=["developer"]
[[ballerina.auth.users]]
username="ldclakmal"
password="ldclakmal@123"
scopes=["developer", "admin"]
[[ballerina.auth.users]]
username="eve"
password="eve@123"
# As a prerequisite, ensure that the `Config.toml` file is populated correctly
# with the user information.
echo '[["ballerina.auth.users"]]
username="alice"
password="password1"
scopes=["scope1"]
[["ballerina.auth.users"]]
username="bob"
password="password2"
scopes=["scope2", "scope3"]' > Config.toml
# You may need to change the certificate file path and private key file path.
bal run http_service_basic_auth_file_user_store.bal
[ballerina/http] started HTTPS/WSS listener 0.0.0.0:9090