feat: generic oauth

internal/providers/generic.go

@@ -0,0 +1,35 @@
+package providers
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+)
+
+type GenericUserInfoResponse struct {
+	Email string `json:"email"`
+}
+
+func GetGenericEmail(client *http.Client, url string) (string, error) {
+	res, resErr := client.Get(url)
+
+	if resErr != nil {
+		return "", resErr
+	}
+
+	body, bodyErr := io.ReadAll(res.Body)
+
+	if bodyErr != nil {
+		return "", bodyErr
+	}
+
+	var user GenericUserInfoResponse
+
+	jsonErr := json.Unmarshal(body, &user)
+
+	if jsonErr != nil {
+		return "", jsonErr
+	}
+
+	return user.Email, nil
+}

internal/providers/github.go

@@ -7,12 +7,12 @@ import (
 	"net/http"
 )
 
-type GithubEmailsResponse []struct {
-	Email string `json:"email"`
-	Primary bool `json:"primary"`
+type GithubUserInfoResponse []struct {
+	Email   string `json:"email"`
+	Primary bool   `json:"primary"`
 }
 
-func GithubScopes() ([]string) {
+func GithubScopes() []string {
 	return []string{"user:email"}
 }
 
@@ -29,7 +29,7 @@ func GetGithubEmail(client *http.Client) (string, error) {
 		return "", bodyErr
 	}
 
-	var emails GithubEmailsResponse
+	var emails GithubUserInfoResponse
 
 	jsonErr := json.Unmarshal(body, &emails)
 
@@ -44,4 +44,4 @@ func GetGithubEmail(client *http.Client) (string, error) {
 	}
 
 	return "", errors.New("no primary email found")
-}
+}

internal/providers/google.go

@@ -6,7 +6,7 @@ import (
 	"net/http"
 )
 
-type GoogleUserinfoResponse struct {
+type GoogleUserInfoResponse struct {
 	Email string `json:"email"`
 }
 
@@ -27,7 +27,7 @@ func GetGoogleEmail(client *http.Client) (string, error) {
 		return "", bodyErr
 	}
 
-	var user GoogleUserinfoResponse
+	var user GoogleUserInfoResponse
 
 	jsonErr := json.Unmarshal(body, &user)
 

internal/providers/providers.go

@@ -17,10 +17,10 @@ func NewProviders(config types.OAuthConfig) *Providers {
 }
 
 type Providers struct {
-	Config    types.OAuthConfig
-	Github    *oauth.OAuth
-	Google    *oauth.OAuth
-	Microsoft *oauth.OAuth
+	Config  types.OAuthConfig
+	Github  *oauth.OAuth
+	Google  *oauth.OAuth
+	Generic *oauth.OAuth
 }
 
 func (providers *Providers) Init() {
@@ -46,6 +46,20 @@ func (providers *Providers) Init() {
 		})
 		providers.Google.Init()
 	}
+	if providers.Config.GenericClientId != "" && providers.Config.GenericClientSecret != "" {
+		log.Info().Msg("Initializing Generic OAuth")
+		providers.Generic = oauth.NewOAuth(oauth2.Config{
+			ClientID:     providers.Config.GenericClientId,
+			ClientSecret: providers.Config.GenericClientSecret,
+			RedirectURL:  fmt.Sprintf("%s/api/oauth/callback/generic", providers.Config.AppURL),
+			Scopes:       []string{providers.Config.GenericScopes},
+			Endpoint: oauth2.Endpoint{
+				AuthURL:  providers.Config.GenericAuthURL,
+				TokenURL: providers.Config.GenericTokenURL,
+			},
+		})
+		providers.Generic.Init()
+	}
 }
 
 func (providers *Providers) GetProvider(provider string) *oauth.OAuth {
@@ -54,6 +68,8 @@ func (providers *Providers) GetProvider(provider string) *oauth.OAuth {
 		return providers.Github
 	case "google":
 		return providers.Google
+	case "generic":
+		return providers.Generic
 	default:
 		return nil
 	}
@@ -81,6 +97,16 @@ func (providers *Providers) GetUser(provider string) (string, error) {
 			return "", emailErr
 		}
 		return email, nil
+	case "generic":
+		if providers.Generic == nil {
+			return "", nil
+		}
+		client := providers.Generic.GetClient()
+		email, emailErr := GetGenericEmail(client, providers.Config.GenericUserInfoURL)
+		if emailErr != nil {
+			return "", emailErr
+		}
+		return email, nil
 	default:
 		return "", nil
 	}
@@ -94,5 +120,8 @@ func (provider *Providers) GetConfiguredProviders() []string {
 	if provider.Google != nil {
 		providers = append(providers, "google")
 	}
+	if provider.Generic != nil {
+		providers = append(providers, "generic")
+	}
 	return providers
 }