mirror of
https://github.com/go-gitea/gitea.git
synced 2024-08-22 04:23:25 +02:00
* add discord auth * add vendor for discord * fix syntax error * make fmt * update version of goth in use * update markbates/goth
211 lines
5.5 KiB
Go
211 lines
5.5 KiB
Go
// Package discord implements the OAuth2 protocol for authenticating users through Discord.
|
|
// This package can be used as a reference implementation of an OAuth2 provider for Discord.
|
|
package discord
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/json"
|
|
"io"
|
|
"io/ioutil"
|
|
|
|
"github.com/markbates/goth"
|
|
"golang.org/x/oauth2"
|
|
|
|
"fmt"
|
|
"net/http"
|
|
)
|
|
|
|
const (
|
|
authURL string = "https://discordapp.com/api/oauth2/authorize"
|
|
tokenURL string = "https://discordapp.com/api/oauth2/token"
|
|
userEndpoint string = "https://discordapp.com/api/users/@me"
|
|
)
|
|
|
|
const (
|
|
// allows /users/@me without email
|
|
ScopeIdentify string = "identify"
|
|
// enables /users/@me to return an email
|
|
ScopeEmail string = "email"
|
|
// allows /users/@me/connections to return linked Twitch and YouTube accounts
|
|
ScopeConnections string = "connections"
|
|
// allows /users/@me/guilds to return basic information about all of a user's guilds
|
|
ScopeGuilds string = "guilds"
|
|
// allows /invites/{invite.id} to be used for joining a user's guild
|
|
ScopeJoinGuild string = "guilds.join"
|
|
// allows your app to join users to a group dm
|
|
ScopeGroupDMjoin string = "gdm.join"
|
|
// for oauth2 bots, this puts the bot in the user's selected guild by default
|
|
ScopeBot string = "bot"
|
|
// this generates a webhook that is returned in the oauth token response for authorization code grants
|
|
ScopeWebhook string = "webhook.incoming"
|
|
)
|
|
|
|
// New creates a new Discord provider, and sets up important connection details.
|
|
// You should always call `discord.New` to get a new Provider. Never try to create
|
|
// one manually.
|
|
func New(clientKey string, secret string, callbackURL string, scopes ...string) *Provider {
|
|
p := &Provider{
|
|
ClientKey: clientKey,
|
|
Secret: secret,
|
|
CallbackURL: callbackURL,
|
|
providerName: "discord",
|
|
}
|
|
p.config = newConfig(p, scopes)
|
|
return p
|
|
}
|
|
|
|
// Provider is the implementation of `goth.Provider` for accessing Discord
|
|
type Provider struct {
|
|
ClientKey string
|
|
Secret string
|
|
CallbackURL string
|
|
HTTPClient *http.Client
|
|
config *oauth2.Config
|
|
providerName string
|
|
}
|
|
|
|
// Name gets the name used to retrieve this provider.
|
|
func (p *Provider) Name() string {
|
|
return p.providerName
|
|
}
|
|
|
|
// SetName is to update the name of the provider (needed in case of multiple providers of 1 type)
|
|
func (p *Provider) SetName(name string) {
|
|
p.providerName = name
|
|
}
|
|
|
|
func (p *Provider) Client() *http.Client {
|
|
return goth.HTTPClientWithFallBack(p.HTTPClient)
|
|
}
|
|
|
|
// Debug is no-op for the Discord package.
|
|
func (p *Provider) Debug(debug bool) {}
|
|
|
|
// BeginAuth asks Discord for an authentication end-point.
|
|
func (p *Provider) BeginAuth(state string) (goth.Session, error) {
|
|
|
|
url := p.config.AuthCodeURL(state, oauth2.AccessTypeOnline)
|
|
|
|
s := &Session{
|
|
AuthURL: url,
|
|
}
|
|
return s, nil
|
|
}
|
|
|
|
// FetchUser will go to Discord and access basic info about the user.
|
|
func (p *Provider) FetchUser(session goth.Session) (goth.User, error) {
|
|
|
|
s := session.(*Session)
|
|
|
|
user := goth.User{
|
|
AccessToken: s.AccessToken,
|
|
Provider: p.Name(),
|
|
RefreshToken: s.RefreshToken,
|
|
ExpiresAt: s.ExpiresAt,
|
|
}
|
|
|
|
if user.AccessToken == "" {
|
|
// data is not yet retrieved since accessToken is still empty
|
|
return user, fmt.Errorf("%s cannot get user information without accessToken", p.providerName)
|
|
}
|
|
|
|
req, err := http.NewRequest("GET", userEndpoint, nil)
|
|
if err != nil {
|
|
return user, err
|
|
}
|
|
req.Header.Set("Accept", "application/json")
|
|
req.Header.Set("Authorization", "Bearer "+s.AccessToken)
|
|
resp, err := p.Client().Do(req)
|
|
if err != nil {
|
|
if resp != nil {
|
|
resp.Body.Close()
|
|
}
|
|
return user, err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
if resp.StatusCode != http.StatusOK {
|
|
return user, fmt.Errorf("%s responded with a %d trying to fetch user information", p.providerName, resp.StatusCode)
|
|
}
|
|
|
|
bits, err := ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
|
return user, err
|
|
}
|
|
|
|
err = json.NewDecoder(bytes.NewReader(bits)).Decode(&user.RawData)
|
|
if err != nil {
|
|
return user, err
|
|
}
|
|
|
|
err = userFromReader(bytes.NewReader(bits), &user)
|
|
if err != nil {
|
|
return user, err
|
|
}
|
|
|
|
return user, err
|
|
}
|
|
|
|
func userFromReader(r io.Reader, user *goth.User) error {
|
|
u := struct {
|
|
Name string `json:"username"`
|
|
Email string `json:"email"`
|
|
AvatarID string `json:"avatar"`
|
|
MFAEnabled bool `json:"mfa_enabled"`
|
|
Discriminator string `json:"discriminator"`
|
|
Verified bool `json:"verified"`
|
|
ID string `json:"id"`
|
|
}{}
|
|
|
|
err := json.NewDecoder(r).Decode(&u)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
user.Name = u.Name
|
|
user.Email = u.Email
|
|
user.AvatarURL = "https://media.discordapp.net/avatars/" + u.ID + "/" + u.AvatarID + ".jpg"
|
|
user.UserID = u.ID
|
|
|
|
return nil
|
|
}
|
|
|
|
func newConfig(p *Provider, scopes []string) *oauth2.Config {
|
|
c := &oauth2.Config{
|
|
ClientID: p.ClientKey,
|
|
ClientSecret: p.Secret,
|
|
RedirectURL: p.CallbackURL,
|
|
Endpoint: oauth2.Endpoint{
|
|
AuthURL: authURL,
|
|
TokenURL: tokenURL,
|
|
},
|
|
Scopes: []string{},
|
|
}
|
|
|
|
if len(scopes) > 0 {
|
|
for _, scope := range scopes {
|
|
c.Scopes = append(c.Scopes, scope)
|
|
}
|
|
} else {
|
|
c.Scopes = []string{ScopeIdentify}
|
|
}
|
|
|
|
return c
|
|
}
|
|
|
|
//RefreshTokenAvailable refresh token is provided by auth provider or not
|
|
func (p *Provider) RefreshTokenAvailable() bool {
|
|
return true
|
|
}
|
|
|
|
//RefreshToken get new access token based on the refresh token
|
|
func (p *Provider) RefreshToken(refreshToken string) (*oauth2.Token, error) {
|
|
token := &oauth2.Token{RefreshToken: refreshToken}
|
|
ts := p.config.TokenSource(oauth2.NoContext, token)
|
|
newToken, err := ts.Token()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return newToken, err
|
|
}
|