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token_user.go
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token_user.go
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/*
* Copyright © 2015-2018 Aeneas Rekkas <aeneas+oss@aeneas.io>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @author Aeneas Rekkas <aeneas+oss@aeneas.io>
* @copyright 2015-2018 Aeneas Rekkas <aeneas+oss@aeneas.io>
* @license Apache-2.0
*/
package cmd
import (
"context"
"crypto/tls"
"fmt"
"net/http"
"net/url"
"os"
"strconv"
"strings"
"time"
"github.com/julienschmidt/httprouter"
"github.com/ory/go-convenience/urlx"
"github.com/ory/hydra/pkg"
"github.com/ory/hydra/rand/sequence"
"github.com/spf13/cobra"
"github.com/toqueteos/webbrowser"
"golang.org/x/oauth2"
)
// tokenUserCmd represents the token command
var tokenUserCmd = &cobra.Command{
Use: "user",
Short: "Starts a web server that initiates and handles OAuth 2.0 requests",
Long: ``,
Run: func(cmd *cobra.Command, args []string) {
ctx := context.Background()
if ok, _ := cmd.Flags().GetBool("skip-tls-verify"); ok {
// fmt.Println("Warning: Skipping TLS Certificate Verification.")
ctx = context.WithValue(context.Background(), oauth2.HTTPClient, &http.Client{Transport: &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
}})
}
port, _ := cmd.Flags().GetInt("port")
scopes, _ := cmd.Flags().GetStringSlice("scope")
prompt, _ := cmd.Flags().GetStringSlice("prompt")
maxAge, _ := cmd.Flags().GetInt("max-age")
redirectUrl, _ := cmd.Flags().GetString("redirect")
backend, _ := cmd.Flags().GetString("token-url")
frontend, _ := cmd.Flags().GetString("auth-url")
clientID, _ := cmd.Flags().GetString("client-id")
clientSecret, _ := cmd.Flags().GetString("client-secret")
if clientID == "" || clientSecret == "" {
fmt.Print(cmd.UsageString())
fmt.Println("Please provide a Client ID and Client Secret using flags --client-id and --client-secret, or environment variables OAUTH2_CLIENT_ID and OAUTH2_CLIENT_SECRET.")
return
}
serverLocation := fmt.Sprintf("http://127.0.0.1:%d/", port)
if redirectUrl == "" {
redirectUrl = serverLocation + "callback"
}
if backend == "" {
bu, err := url.Parse(c.GetClusterURLWithoutTailingSlashOrFail(cmd))
pkg.Must(err, `Unable to parse cluster url ("%s"): %s`, c.GetClusterURLWithoutTailingSlashOrFail(cmd), err)
backend = urlx.AppendPaths(bu, "/oauth2/token").String()
}
if frontend == "" {
fu, err := url.Parse(c.GetClusterURLWithoutTailingSlashOrFail(cmd))
pkg.Must(err, `Unable to parse cluster url ("%s"): %s`, c.GetClusterURLWithoutTailingSlashOrFail(cmd), err)
frontend = urlx.AppendPaths(fu, "/oauth2/auth").String()
}
conf := oauth2.Config{
ClientID: clientID,
ClientSecret: clientSecret,
Endpoint: oauth2.Endpoint{
TokenURL: backend,
AuthURL: frontend,
},
RedirectURL: redirectUrl,
Scopes: scopes,
}
state, err := sequence.RuneSequence(24, sequence.AlphaLower)
pkg.Must(err, "Could not generate random state: %s", err)
nonce, err := sequence.RuneSequence(24, sequence.AlphaLower)
pkg.Must(err, "Could not generate random state: %s", err)
authCodeURL := conf.AuthCodeURL(string(state)) + "&nonce=" + string(nonce) + "&prompt=" + strings.Join(prompt, "+") + "&max_age=" + strconv.Itoa(maxAge)
if ok, _ := cmd.Flags().GetBool("no-open"); !ok {
webbrowser.Open(serverLocation)
}
fmt.Println("Setting up home route on " + serverLocation)
fmt.Println("Setting up callback listener on " + serverLocation + "callback")
fmt.Println("Press ctrl + c on Linux / Windows or cmd + c on OSX to end the process.")
fmt.Printf("If your browser does not open automatically, navigate to:\n\n\t%s\n\n", serverLocation)
r := httprouter.New()
server := &http.Server{Addr: fmt.Sprintf(":%d", port), Handler: r}
var shutdown = func() {
time.Sleep(time.Second * 1)
ctx, _ := context.WithTimeout(context.Background(), time.Second*5)
server.Shutdown(ctx)
}
r.GET("/", func(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
w.Write([]byte(fmt.Sprintf(`
<html><head></head><body>
<h1>Welcome to the example OAuth 2.0 Consumer</h1>
<p>This example requests an OAuth 2.0 Access, Refresh, and OpenID Connect ID Token from the OAuth 2.0 Server (ORY Hydra). To initiate the flow, click the "Authorize Application" button.</p>
<p><a href="%s">Authorize application</a></p>
</body>
`, authCodeURL)))
})
r.GET("/callback", func(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
if len(r.URL.Query().Get("error")) > 0 {
fmt.Printf("Got error: %s\n", r.URL.Query().Get("error_description"))
w.WriteHeader(http.StatusInternalServerError)
fmt.Fprintf(w, "<html><body><h1>An error occurred</h1><h2>%s</h2><p>%s</p><p>%s</p></body></html>", r.URL.Query().Get("error"), r.URL.Query().Get("error_description"), r.URL.Query().Get("error_debug"))
go shutdown()
return
}
if r.URL.Query().Get("state") != string(state) {
fmt.Printf("States do not match. Expected %s, got %s\n", string(state), r.URL.Query().Get("state"))
w.WriteHeader(http.StatusInternalServerError)
fmt.Fprintf(w, "<html><body><h1>An error occurred</h1><h2>%s</h2><p>%s</p></body></html>", "States do not match", "Expected state "+string(state)+" but got "+r.URL.Query().Get("state"))
go shutdown()
return
}
code := r.URL.Query().Get("code")
token, err := conf.Exchange(ctx, code)
if err != nil {
fmt.Printf("Unable to exchange code for token: %s\n", err)
w.WriteHeader(http.StatusInternalServerError)
fmt.Fprintf(w, "<html><body><h1>An error occurred</h1><p>%s</p></body></html>", err)
go shutdown()
return
}
fmt.Printf("Access Token:\n\t%s\n", token.AccessToken)
fmt.Printf("Refresh Token:\n\t%s\n\n", token.RefreshToken)
fmt.Printf("Expires in:\n\t%s\n\n", token.Expiry)
w.Write([]byte(fmt.Sprintf(`
<html><head></head><body>
<ul>
<li>Access Token: <code>%s</code></li>
<li>Refresh Token: <code>%s</code></li>
<li>Expires in: <code>%s</code></li>
`, token.AccessToken, token.RefreshToken, token.Expiry)))
idt := token.Extra("id_token")
if idt != nil {
w.Write([]byte(fmt.Sprintf(`<li>ID Token: <code>%s</code></li>`, idt)))
fmt.Printf("ID Token:\n\t%s\n\n", idt)
}
w.Write([]byte("</ul></body></html>"))
go shutdown()
})
server.ListenAndServe()
},
}
func init() {
tokenCmd.AddCommand(tokenUserCmd)
tokenUserCmd.Flags().Bool("no-open", false, "Do not open the browser window automatically")
tokenUserCmd.Flags().IntP("port", "p", 4446, "The port on which the server should run")
tokenUserCmd.Flags().StringSlice("scope", []string{"offline", "openid"}, "Request OAuth2 scope")
tokenUserCmd.Flags().StringSlice("prompt", []string{}, "Set the OpenID Connect prompt parameter")
tokenUserCmd.Flags().Int("max-age", 0, "Set the OpenID Connect max_age parameter")
tokenUserCmd.Flags().String("client-id", os.Getenv("OAUTH2_CLIENT_ID"), "Use the provided OAuth 2.0 Client ID, defaults to environment variable OAUTH2_CLIENT_ID")
tokenUserCmd.Flags().String("client-secret", os.Getenv("OAUTH2_CLIENT_SECRET"), "Use the provided OAuth 2.0 Client Secret, defaults to environment variable OAUTH2_CLIENT_SECRET")
tokenUserCmd.Flags().String("redirect", "", "Force a redirect url")
tokenUserCmd.Flags().String("auth-url", "", "Usually it is enough to specify the `endpoint` flag, but if you want to force the authorization url, use this flag")
tokenUserCmd.Flags().String("token-url", "", "Usually it is enough to specify the `endpoint` flag, but if you want to force the token url, use this flag")
tokenUserCmd.PersistentFlags().String("endpoint", os.Getenv("HYDRA_URL"), "Set the URL where ORY Hydra is hosted, defaults to environment variable HYDRA_URL")
}