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// Copyright 2021 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package oauth2
import (
"net/url"
"sort"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"github.com/markbates/goth"
"github.com/markbates/goth/providers/bitbucket"
"github.com/markbates/goth/providers/discord"
"github.com/markbates/goth/providers/dropbox"
"github.com/markbates/goth/providers/facebook"
"github.com/markbates/goth/providers/gitea"
"github.com/markbates/goth/providers/github"
"github.com/markbates/goth/providers/gitlab"
"github.com/markbates/goth/providers/google"
"github.com/markbates/goth/providers/mastodon"
"github.com/markbates/goth/providers/nextcloud"
"github.com/markbates/goth/providers/openidConnect"
"github.com/markbates/goth/providers/twitter"
"github.com/markbates/goth/providers/yandex"
)
// Provider describes the display values of a single OAuth2 provider
type Provider struct {
Name string
DisplayName string
Image string
CustomURLMapping *CustomURLMapping
}
// Providers contains the map of registered OAuth2 providers in Gitea (based on goth)
// key is used to map the OAuth2Provider with the goth provider type (also in LoginSource.OAuth2Config.Provider)
// value is used to store display data
var Providers = map[string]Provider{
"bitbucket": {Name: "bitbucket", DisplayName: "Bitbucket", Image: "/assets/img/auth/bitbucket.png"},
"dropbox": {Name: "dropbox", DisplayName: "Dropbox", Image: "/assets/img/auth/dropbox.png"},
"facebook": {Name: "facebook", DisplayName: "Facebook", Image: "/assets/img/auth/facebook.png"},
"github": {
Name: "github", DisplayName: "GitHub", Image: "/assets/img/auth/github.png",
CustomURLMapping: &CustomURLMapping{
TokenURL: github.TokenURL,
AuthURL: github.AuthURL,
ProfileURL: github.ProfileURL,
EmailURL: github.EmailURL,
},
},
"gitlab": {
Name: "gitlab", DisplayName: "GitLab", Image: "/assets/img/auth/gitlab.png",
CustomURLMapping: &CustomURLMapping{
TokenURL: gitlab.TokenURL,
AuthURL: gitlab.AuthURL,
ProfileURL: gitlab.ProfileURL,
},
},
"gplus": {Name: "gplus", DisplayName: "Google", Image: "/assets/img/auth/google.png"},
"openidConnect": {Name: "openidConnect", DisplayName: "OpenID Connect", Image: "/assets/img/auth/openid_connect.svg"},
"twitter": {Name: "twitter", DisplayName: "Twitter", Image: "/assets/img/auth/twitter.png"},
"discord": {Name: "discord", DisplayName: "Discord", Image: "/assets/img/auth/discord.png"},
"gitea": {
Name: "gitea", DisplayName: "Gitea", Image: "/assets/img/auth/gitea.png",
CustomURLMapping: &CustomURLMapping{
TokenURL: gitea.TokenURL,
AuthURL: gitea.AuthURL,
ProfileURL: gitea.ProfileURL,
},
},
"nextcloud": {
Name: "nextcloud", DisplayName: "Nextcloud", Image: "/assets/img/auth/nextcloud.png",
CustomURLMapping: &CustomURLMapping{
TokenURL: nextcloud.TokenURL,
AuthURL: nextcloud.AuthURL,
ProfileURL: nextcloud.ProfileURL,
},
},
"yandex": {Name: "yandex", DisplayName: "Yandex", Image: "/assets/img/auth/yandex.png"},
"mastodon": {
Name: "mastodon", DisplayName: "Mastodon", Image: "/assets/img/auth/mastodon.png",
CustomURLMapping: &CustomURLMapping{
AuthURL: mastodon.InstanceURL,
},
},
}
// GetActiveOAuth2Providers returns the map of configured active OAuth2 providers
// key is used as technical name (like in the callbackURL)
// values to display
func GetActiveOAuth2Providers() ([]string, map[string]Provider, error) {
// Maybe also separate used and unused providers so we can force the registration of only 1 active provider for each type
loginSources, err := models.GetActiveOAuth2ProviderLoginSources()
if err != nil {
return nil, nil, err
}
var orderedKeys []string
providers := make(map[string]Provider)
for _, source := range loginSources {
prov := Providers[source.Cfg.(*Source).Provider]
if source.Cfg.(*Source).IconURL != "" {
prov.Image = source.Cfg.(*Source).IconURL
}
providers[source.Name] = prov
orderedKeys = append(orderedKeys, source.Name)
}
sort.Strings(orderedKeys)
return orderedKeys, providers, nil
}
// RegisterProvider register a OAuth2 provider in goth lib
func RegisterProvider(providerName, providerType, clientID, clientSecret, openIDConnectAutoDiscoveryURL string, customURLMapping *CustomURLMapping) error {
provider, err := createProvider(providerName, providerType, clientID, clientSecret, openIDConnectAutoDiscoveryURL, customURLMapping)
if err == nil && provider != nil {
goth.UseProviders(provider)
}
return err
}
// RemoveProvider removes the given OAuth2 provider from the goth lib
func RemoveProvider(providerName string) {
delete(goth.GetProviders(), providerName)
}
// ClearProviders clears all OAuth2 providers from the goth lib
func ClearProviders() {
goth.ClearProviders()
}
// used to create different types of goth providers
func createProvider(providerName, providerType, clientID, clientSecret, openIDConnectAutoDiscoveryURL string, customURLMapping *CustomURLMapping) (goth.Provider, error) {
callbackURL := setting.AppURL + "user/oauth2/" + url.PathEscape(providerName) + "/callback"
var provider goth.Provider
var err error
switch providerType {
case "bitbucket":
provider = bitbucket.New(clientID, clientSecret, callbackURL, "account")
case "dropbox":
provider = dropbox.New(clientID, clientSecret, callbackURL)
case "facebook":
provider = facebook.New(clientID, clientSecret, callbackURL, "email")
case "github":
authURL := github.AuthURL
tokenURL := github.TokenURL
profileURL := github.ProfileURL
emailURL := github.EmailURL
if customURLMapping != nil {
if len(customURLMapping.AuthURL) > 0 {
authURL = customURLMapping.AuthURL
}
if len(customURLMapping.TokenURL) > 0 {
tokenURL = customURLMapping.TokenURL
}
if len(customURLMapping.ProfileURL) > 0 {
profileURL = customURLMapping.ProfileURL
}
if len(customURLMapping.EmailURL) > 0 {
emailURL = customURLMapping.EmailURL
}
}
scopes := []string{}
if setting.OAuth2Client.EnableAutoRegistration {
scopes = append(scopes, "user:email")
}
provider = github.NewCustomisedURL(clientID, clientSecret, callbackURL, authURL, tokenURL, profileURL, emailURL, scopes...)
case "gitlab":
authURL := gitlab.AuthURL
tokenURL := gitlab.TokenURL
profileURL := gitlab.ProfileURL
if customURLMapping != nil {
if len(customURLMapping.AuthURL) > 0 {
authURL = customURLMapping.AuthURL
}
if len(customURLMapping.TokenURL) > 0 {
tokenURL = customURLMapping.TokenURL
}
if len(customURLMapping.ProfileURL) > 0 {
profileURL = customURLMapping.ProfileURL
}
}
provider = gitlab.NewCustomisedURL(clientID, clientSecret, callbackURL, authURL, tokenURL, profileURL, "read_user")
case "gplus": // named gplus due to legacy gplus -> google migration (Google killed Google+). This ensures old connections still work
scopes := []string{"email"}
if setting.OAuth2Client.UpdateAvatar || setting.OAuth2Client.EnableAutoRegistration {
scopes = append(scopes, "profile")
}
provider = google.New(clientID, clientSecret, callbackURL, scopes...)
case "openidConnect":
if provider, err = openidConnect.New(clientID, clientSecret, callbackURL, openIDConnectAutoDiscoveryURL, setting.OAuth2Client.OpenIDConnectScopes...); err != nil {
log.Warn("Failed to create OpenID Connect Provider with name '%s' with url '%s': %v", providerName, openIDConnectAutoDiscoveryURL, err)
}
case "twitter":
provider = twitter.NewAuthenticate(clientID, clientSecret, callbackURL)
case "discord":
provider = discord.New(clientID, clientSecret, callbackURL, discord.ScopeIdentify, discord.ScopeEmail)
case "gitea":
authURL := gitea.AuthURL
tokenURL := gitea.TokenURL
profileURL := gitea.ProfileURL
if customURLMapping != nil {
if len(customURLMapping.AuthURL) > 0 {
authURL = customURLMapping.AuthURL
}
if len(customURLMapping.TokenURL) > 0 {
tokenURL = customURLMapping.TokenURL
}
if len(customURLMapping.ProfileURL) > 0 {
profileURL = customURLMapping.ProfileURL
}
}
provider = gitea.NewCustomisedURL(clientID, clientSecret, callbackURL, authURL, tokenURL, profileURL)
case "nextcloud":
authURL := nextcloud.AuthURL
tokenURL := nextcloud.TokenURL
profileURL := nextcloud.ProfileURL
if customURLMapping != nil {
if len(customURLMapping.AuthURL) > 0 {
authURL = customURLMapping.AuthURL
}
if len(customURLMapping.TokenURL) > 0 {
tokenURL = customURLMapping.TokenURL
}
if len(customURLMapping.ProfileURL) > 0 {
profileURL = customURLMapping.ProfileURL
}
}
provider = nextcloud.NewCustomisedURL(clientID, clientSecret, callbackURL, authURL, tokenURL, profileURL)
case "yandex":
// See https://tech.yandex.com/passport/doc/dg/reference/response-docpage/
provider = yandex.New(clientID, clientSecret, callbackURL, "login:email", "login:info", "login:avatar")
case "mastodon":
instanceURL := mastodon.InstanceURL
if customURLMapping != nil && len(customURLMapping.AuthURL) > 0 {
instanceURL = customURLMapping.AuthURL
}
provider = mastodon.NewCustomisedURL(clientID, clientSecret, callbackURL, instanceURL)
}
// always set the name if provider is created so we can support multiple setups of 1 provider
if err == nil && provider != nil {
provider.SetName(providerName)
}
return provider, err
}
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