mirror of
https://github.com/vx3r/wg-gen-web.git
synced 2024-11-04 17:31:17 +00:00
100 lines
2.3 KiB
Go
100 lines
2.3 KiB
Go
package oauth2oidc
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import (
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"context"
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"fmt"
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"github.com/coreos/go-oidc"
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log "github.com/sirupsen/logrus"
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"gitlab.127-0-0-1.fr/vx3r/wg-gen-web/model"
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"golang.org/x/oauth2"
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"os"
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)
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type Oauth2idc struct{}
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var (
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oauth2Config *oauth2.Config
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oidcProvider *oidc.Provider
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oidcIDTokenVerifier *oidc.IDTokenVerifier
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)
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// Setup validate provider
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func (o *Oauth2idc) Setup() error {
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var err error
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oidcProvider, err = oidc.NewProvider(context.TODO(), os.Getenv("OAUTH2_PROVIDER"))
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if err != nil {
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return err
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}
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oidcIDTokenVerifier = oidcProvider.Verifier(&oidc.Config{
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ClientID: os.Getenv("OAUTH2_CLIENT_ID"),
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})
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oauth2Config = &oauth2.Config{
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ClientID: os.Getenv("OAUTH2_CLIENT_ID"),
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ClientSecret: os.Getenv("OAUTH2_CLIENT_SECRET"),
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RedirectURL: os.Getenv("OAUTH2_REDIRECT_URL"),
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Scopes: []string{oidc.ScopeOpenID, "profile", "email"},
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Endpoint: oidcProvider.Endpoint(),
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}
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return nil
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}
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// CodeUrl get url to redirect client for auth
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func (o *Oauth2idc) CodeUrl(state string) string {
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return oauth2Config.AuthCodeURL(state)
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}
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// Exchange exchange code for Oauth2 token
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func (o *Oauth2idc) Exchange(code string) (*oauth2.Token, error) {
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oauth2Token, err := oauth2Config.Exchange(context.TODO(), code)
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if err != nil {
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return nil, err
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}
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return oauth2Token, nil
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}
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// UserInfo get token user
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func (o *Oauth2idc) UserInfo(oauth2Token *oauth2.Token) (*model.User, error) {
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rawIDToken, ok := oauth2Token.Extra("id_token").(string)
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if !ok {
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return nil, fmt.Errorf("no id_token field in oauth2 token")
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}
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iDToken, err := oidcIDTokenVerifier.Verify(context.TODO(), rawIDToken)
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if err != nil {
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return nil, err
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}
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userInfo, err := oidcProvider.UserInfo(context.TODO(), oauth2.StaticTokenSource(oauth2Token))
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if err != nil {
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return nil, err
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}
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// ID Token payload is just JSON
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var claims map[string]interface{}
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if err := userInfo.Claims(&claims); err != nil {
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return nil, fmt.Errorf("failed to get id token claims: %s", err)
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}
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// get some infos about user
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user := &model.User{}
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user.Sub = userInfo.Subject
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user.Email = userInfo.Email
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user.Profile = userInfo.Profile
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if v, found := claims["name"]; found && v != nil {
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user.Name = v.(string)
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} else {
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log.Error("name not found in user info claims")
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}
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user.Issuer = iDToken.Issuer
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user.IssuedAt = iDToken.IssuedAt
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return user, nil
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}
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