mirror of
https://github.com/Luzifer/nginx-sso.git
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Knut Ahlers
c60f01d4a9
This enables to move secrets from the configuration file into the environment and source them through Go templating with `env` template function closes #78 Signed-off-by: Knut Ahlers <knut@ahlers.me>
114 lines
3.2 KiB
Go
114 lines
3.2 KiB
Go
package token
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import (
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"net/http"
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"strings"
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"github.com/Luzifer/go_helpers/v2/str"
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"github.com/Luzifer/nginx-sso/plugins"
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yaml "gopkg.in/yaml.v3"
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)
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type AuthToken struct {
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Tokens map[string]string `yaml:"tokens"`
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Groups map[string][]string `yaml:"groups"`
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}
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func New() *AuthToken {
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return &AuthToken{}
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}
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// AuthenticatorID needs to return an unique string to identify
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// this special authenticator
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func (a AuthToken) AuthenticatorID() string { return "token" }
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// Configure loads the configuration for the Authenticator from the
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// global config.yaml file which is passed as a byte-slice.
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// If no configuration for the Authenticator is supplied the function
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// needs to return the plugins.ErrProviderUnconfigured
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func (a *AuthToken) Configure(yamlSource []byte) error {
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envelope := struct {
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Providers struct {
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Token *AuthToken `yaml:"token"`
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} `yaml:"providers"`
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}{}
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if err := yaml.Unmarshal(yamlSource, &envelope); err != nil {
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return err
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}
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if envelope.Providers.Token == nil {
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return plugins.ErrProviderUnconfigured
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}
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a.Tokens = envelope.Providers.Token.Tokens
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a.Groups = envelope.Providers.Token.Groups
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return nil
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}
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// DetectUser is used to detect a user without a login form from
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// a cookie, header or other methods
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// If no user was detected the plugins.ErrNoValidUserFound needs to be
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// returned
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func (a AuthToken) DetectUser(res http.ResponseWriter, r *http.Request) (string, []string, error) {
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authHeader := r.Header.Get("Authorization")
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if !strings.HasPrefix(authHeader, "Token ") {
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return "", nil, plugins.ErrNoValidUserFound
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}
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tmp := strings.SplitN(authHeader, " ", 2)
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suppliedToken := tmp[1]
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var (
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user, token string
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userFound bool
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)
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for user, token = range a.Tokens {
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if token == suppliedToken {
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userFound = true
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break
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}
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}
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if !userFound {
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return "", nil, plugins.ErrNoValidUserFound
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}
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groups := []string{}
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for group, users := range a.Groups {
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if str.StringInSlice(user, users) {
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groups = append(groups, group)
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}
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}
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return user, groups, nil
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}
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// Login is called when the user submits the login form and needs
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// to authenticate the user or throw an error. If the user has
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// successfully logged in the persistent cookie should be written
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// in order to use DetectUser for the next login.
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// If the user did not login correctly the plugins.ErrNoValidUserFound
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// needs to be returned
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func (a AuthToken) Login(res http.ResponseWriter, r *http.Request) (string, []plugins.MFAConfig, error) {
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return "", nil, plugins.ErrNoValidUserFound
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}
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// LoginFields needs to return the fields required for this login
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// method. If no login using this method is possible the function
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// needs to return nil.
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func (a AuthToken) LoginFields() []plugins.LoginField { return nil }
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// Logout is called when the user visits the logout endpoint and
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// needs to destroy any persistent stored cookies
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func (a AuthToken) Logout(res http.ResponseWriter, r *http.Request) error { return nil }
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// SupportsMFA returns the MFA detection capabilities of the login
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// provider. If the provider can provide mfaConfig objects from its
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// configuration return true. If this is true the login interface
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// will display an additional field for this provider for the user
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// to fill in their MFA token.
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func (a AuthToken) SupportsMFA() bool { return false }
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