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go-micro/auth/auth.go
ben-toogood 9a7a65f05e
Auth Provider (#1309)
* auth provider mock interface

* Auth Provider Options

* Implement API Server Auth Package

* Add weh utils

* Add Login URL

* Auth Provider Options

* Add auth provider scope and setting token in cookie

* Remove auth_login_url flag

Co-authored-by: Asim Aslam <asim@aslam.me>
Co-authored-by: Ben Toogood <ben@micro.mu>
2020-03-07 11:06:57 +00:00

101 lines
2.6 KiB
Go

// Package auth provides authentication and authorization capability
package auth
import (
"context"
"encoding/json"
"time"
"github.com/micro/go-micro/v2/metadata"
)
// Auth providers authentication and authorization
type Auth interface {
// Init the auth package
Init(opts ...Option) error
// Options returns the options set
Options() Options
// Generate a new auth Account
Generate(id string, opts ...GenerateOption) (*Account, error)
// Revoke an authorization Account
Revoke(token string) error
// Verify an account token
Verify(token string) (*Account, error)
// String returns the implementation
String() string
}
// Resource is an entity such as a user or
type Resource struct {
// Name of the resource
Name string
// Type of resource, e.g.
Type string
}
// Role an account has
type Role struct {
// Name of the role
Name string
// The resource it has access
// TODO: potentially remove
Resource *Resource
}
// Account provided by an auth provider
type Account struct {
// ID of the account (UUIDV4, email or username)
Id string `json:"id"`
// Token used to authenticate
Token string `json:"token"`
// Time of Account creation
Created time.Time `json:"created"`
// Time of Account expiry
Expiry time.Time `json:"expiry"`
// Roles associated with the Account
Roles []*Role `json:"roles"`
// Any other associated metadata
Metadata map[string]string `json:"metadata"`
}
const (
// MetadataKey is the key used when storing the account
// in metadata
MetadataKey = "auth-account"
// CookieName is the name of the cookie which stores the
// auth token
CookieName = "micro-token"
)
// AccountFromContext gets the account from the context, which
// is set by the auth wrapper at the start of a call. If the account
// is not set, a nil account will be returned. The error is only returned
// when there was a problem retrieving an account
func AccountFromContext(ctx context.Context) (*Account, error) {
str, ok := metadata.Get(ctx, MetadataKey)
// there was no account set
if !ok {
return nil, nil
}
var acc *Account
// metadata is stored as a string, so unmarshal to an account
if err := json.Unmarshal([]byte(str), &acc); err != nil {
return nil, err
}
return acc, nil
}
// ContextWithAccount sets the account in the context
func ContextWithAccount(ctx context.Context, account *Account) (context.Context, error) {
// metadata is stored as a string, so marshal to bytes
bytes, err := json.Marshal(account)
if err != nil {
return ctx, err
}
// generate a new context with the MetadataKey set
return metadata.Set(ctx, MetadataKey, string(bytes)), nil
}