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76 lines
2.0 KiB
76 lines
2.0 KiB
package goth
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import (
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"context"
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"fmt"
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"net/http"
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"golang.org/x/oauth2"
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)
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// Provider needs to be implemented for each 3rd party authentication provider
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// e.g. Facebook, Twitter, etc...
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type Provider interface {
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Name() string
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SetName(name string)
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BeginAuth(state string) (Session, error)
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UnmarshalSession(string) (Session, error)
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FetchUser(Session) (User, error)
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Debug(bool)
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RefreshToken(refreshToken string) (*oauth2.Token, error) //Get new access token based on the refresh token
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RefreshTokenAvailable() bool //Refresh token is provided by auth provider or not
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}
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const NoAuthUrlErrorMessage = "an AuthURL has not been set"
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// Providers is list of known/available providers.
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type Providers map[string]Provider
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var providers = Providers{}
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// UseProviders adds a list of available providers for use with Goth.
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// Can be called multiple times. If you pass the same provider more
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// than once, the last will be used.
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func UseProviders(viders ...Provider) {
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for _, provider := range viders {
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providers[provider.Name()] = provider
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}
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}
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// GetProviders returns a list of all the providers currently in use.
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func GetProviders() Providers {
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return providers
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}
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// GetProvider returns a previously created provider. If Goth has not
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// been told to use the named provider it will return an error.
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func GetProvider(name string) (Provider, error) {
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provider := providers[name]
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if provider == nil {
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return nil, fmt.Errorf("no provider for %s exists", name)
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}
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return provider, nil
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}
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// ClearProviders will remove all providers currently in use.
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// This is useful, mostly, for testing purposes.
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func ClearProviders() {
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providers = Providers{}
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}
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// ContextForClient provides a context for use with oauth2.
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func ContextForClient(h *http.Client) context.Context {
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if h == nil {
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return oauth2.NoContext
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}
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return context.WithValue(oauth2.NoContext, oauth2.HTTPClient, h)
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}
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// HTTPClientWithFallBack to be used in all fetch operations.
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func HTTPClientWithFallBack(h *http.Client) *http.Client {
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if h != nil {
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return h
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}
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return http.DefaultClient
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}
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