Example #1
0
func main() {
	server := osin.NewServer(osin.NewServerConfig(), example.NewTestStorage())
	server.AccessTokenGen = &AccessTokenGenJWT{privatekey, publickey}

	// Authorization code endpoint
	http.HandleFunc("/authorize", func(w http.ResponseWriter, r *http.Request) {
		resp := server.NewResponse()
		defer resp.Close()

		if ar := server.HandleAuthorizeRequest(resp, r); ar != nil {
			if !example.HandleLoginPage(ar, w, r) {
				return
			}
			ar.Authorized = true
			server.FinishAuthorizeRequest(resp, r, ar)
		}
		if resp.IsError && resp.InternalError != nil {
			fmt.Printf("ERROR: %s\n", resp.InternalError)
		}
		osin.OutputJSON(resp, w, r)
	})

	// Access token endpoint
	http.HandleFunc("/token", func(w http.ResponseWriter, r *http.Request) {
		resp := server.NewResponse()
		defer resp.Close()

		if ar := server.HandleAccessRequest(resp, r); ar != nil {
			ar.Authorized = true
			server.FinishAccessRequest(resp, r, ar)
		}
		if resp.IsError && resp.InternalError != nil {
			fmt.Printf("ERROR: %s\n", resp.InternalError)
		}
		osin.OutputJSON(resp, w, r)
	})

	// Information endpoint
	http.HandleFunc("/info", func(w http.ResponseWriter, r *http.Request) {
		resp := server.NewResponse()
		defer resp.Close()

		if ir := server.HandleInfoRequest(resp, r); ir != nil {
			server.FinishInfoRequest(resp, r, ir)
		}
		osin.OutputJSON(resp, w, r)
	})

	// Application home endpoint
	http.HandleFunc("/app", func(w http.ResponseWriter, r *http.Request) {
		w.Write([]byte("<html><body>"))
		w.Write([]byte(fmt.Sprintf("<a href=\"/authorize?response_type=code&client_id=1234&state=xyz&scope=everything&redirect_uri=%s\">Login</a><br/>", url.QueryEscape("http://localhost:14000/appauth/code"))))
		w.Write([]byte("</body></html>"))
	})

	// Application destination - CODE
	http.HandleFunc("/appauth/code", func(w http.ResponseWriter, r *http.Request) {
		r.ParseForm()

		code := r.Form.Get("code")

		w.Write([]byte("<html><body>"))
		w.Write([]byte("APP AUTH - CODE<br/>"))
		defer w.Write([]byte("</body></html>"))

		if code == "" {
			w.Write([]byte("Nothing to do"))
			return
		}

		jr := make(map[string]interface{})

		// build access code url
		aurl := fmt.Sprintf("/token?grant_type=authorization_code&client_id=1234&state=xyz&redirect_uri=%s&code=%s",
			url.QueryEscape("http://localhost:14000/appauth/code"), url.QueryEscape(code))

		// if parse, download and parse json
		if r.Form.Get("doparse") == "1" {
			err := example.DownloadAccessToken(fmt.Sprintf("http://localhost:14000%s", aurl),
				&osin.BasicAuth{"1234", "aabbccdd"}, jr)
			if err != nil {
				w.Write([]byte(err.Error()))
				w.Write([]byte("<br/>"))
			}
		}

		// show json error
		if erd, ok := jr["error"]; ok {
			w.Write([]byte(fmt.Sprintf("ERROR: %s<br/>\n", erd)))
		}

		// show json access token
		if at, ok := jr["access_token"]; ok {
			w.Write([]byte(fmt.Sprintf("ACCESS TOKEN: %s<br/>\n", at)))
		}

		w.Write([]byte(fmt.Sprintf("FULL RESULT: %+v<br/>\n", jr)))

		// output links
		w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Goto Token URL</a><br/>", aurl)))

		cururl := *r.URL
		curq := cururl.Query()
		curq.Add("doparse", "1")
		cururl.RawQuery = curq.Encode()
		w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Download Token</a><br/>", cururl.String())))
	})

	http.ListenAndServe(":14000", nil)
}
Example #2
0
func main() {
	sconfig := osin.NewServerConfig()
	sconfig.AllowedAuthorizeTypes = osin.AllowedAuthorizeType{osin.CODE, osin.TOKEN}
	sconfig.AllowedAccessTypes = osin.AllowedAccessType{osin.AUTHORIZATION_CODE,
		osin.REFRESH_TOKEN, osin.PASSWORD, osin.CLIENT_CREDENTIALS, osin.ASSERTION}
	sconfig.AllowGetAccessRequest = true
	sconfig.AllowClientSecretInParams = true
	server := osin.NewServer(sconfig, example.NewTestStorage())

	// Authorization code endpoint
	http.HandleFunc("/authorize", func(w http.ResponseWriter, r *http.Request) {
		resp := server.NewResponse()
		defer resp.Close()

		if ar := server.HandleAuthorizeRequest(resp, r); ar != nil {
			if !example.HandleLoginPage(ar, w, r) {
				return
			}
			ar.UserData = struct{ Login string }{Login: "******"}
			ar.Authorized = true
			server.FinishAuthorizeRequest(resp, r, ar)
		}
		if resp.IsError && resp.InternalError != nil {
			fmt.Printf("ERROR: %s\n", resp.InternalError)
		}
		if !resp.IsError {
			resp.Output["custom_parameter"] = 187723
		}
		osin.OutputJSON(resp, w, r)
	})

	// Access token endpoint
	http.HandleFunc("/token", func(w http.ResponseWriter, r *http.Request) {
		resp := server.NewResponse()
		defer resp.Close()

		if ar := server.HandleAccessRequest(resp, r); ar != nil {
			switch ar.Type {
			case osin.AUTHORIZATION_CODE:
				ar.Authorized = true
			case osin.REFRESH_TOKEN:
				ar.Authorized = true
			case osin.PASSWORD:
				if ar.Username == "test" && ar.Password == "test" {
					ar.Authorized = true
				}
			case osin.CLIENT_CREDENTIALS:
				ar.Authorized = true
			case osin.ASSERTION:
				if ar.AssertionType == "urn:osin.example.complete" && ar.Assertion == "osin.data" {
					ar.Authorized = true
				}
			}
			server.FinishAccessRequest(resp, r, ar)
		}
		if resp.IsError && resp.InternalError != nil {
			fmt.Printf("ERROR: %s\n", resp.InternalError)
		}
		if !resp.IsError {
			resp.Output["custom_parameter"] = 19923
		}
		osin.OutputJSON(resp, w, r)
	})

	// Information endpoint
	http.HandleFunc("/info", func(w http.ResponseWriter, r *http.Request) {
		resp := server.NewResponse()
		defer resp.Close()

		if ir := server.HandleInfoRequest(resp, r); ir != nil {
			server.FinishInfoRequest(resp, r, ir)
		}
		osin.OutputJSON(resp, w, r)
	})

	// Application home endpoint
	http.HandleFunc("/app", func(w http.ResponseWriter, r *http.Request) {
		w.Write([]byte("<html><body>"))

		w.Write([]byte(fmt.Sprintf("<a href=\"/authorize?response_type=code&client_id=1234&state=xyz&scope=everything&redirect_uri=%s\">Code</a><br/>", url.QueryEscape("http://localhost:14000/appauth/code"))))
		w.Write([]byte(fmt.Sprintf("<a href=\"/authorize?response_type=token&client_id=1234&state=xyz&scope=everything&redirect_uri=%s\">Implict</a><br/>", url.QueryEscape("http://localhost:14000/appauth/token"))))
		w.Write([]byte(fmt.Sprintf("<a href=\"/appauth/password\">Password</a><br/>")))
		w.Write([]byte(fmt.Sprintf("<a href=\"/appauth/client_credentials\">Client Credentials</a><br/>")))
		w.Write([]byte(fmt.Sprintf("<a href=\"/appauth/assertion\">Assertion</a><br/>")))

		w.Write([]byte("</body></html>"))
	})

	// Application destination - CODE
	http.HandleFunc("/appauth/code", func(w http.ResponseWriter, r *http.Request) {
		r.ParseForm()

		code := r.Form.Get("code")

		w.Write([]byte("<html><body>"))
		w.Write([]byte("APP AUTH - CODE<br/>"))
		defer w.Write([]byte("</body></html>"))

		if code == "" {
			w.Write([]byte("Nothing to do"))
			return
		}

		jr := make(map[string]interface{})

		// build access code url
		aurl := fmt.Sprintf("/token?grant_type=authorization_code&client_id=1234&client_secret=aabbccdd&state=xyz&redirect_uri=%s&code=%s",
			url.QueryEscape("http://localhost:14000/appauth/code"), url.QueryEscape(code))

		// if parse, download and parse json
		if r.Form.Get("doparse") == "1" {
			err := example.DownloadAccessToken(fmt.Sprintf("http://localhost:14000%s", aurl),
				&osin.BasicAuth{"1234", "aabbccdd"}, jr)
			if err != nil {
				w.Write([]byte(err.Error()))
				w.Write([]byte("<br/>"))
			}
		}

		// show json error
		if erd, ok := jr["error"]; ok {
			w.Write([]byte(fmt.Sprintf("ERROR: %s<br/>\n", erd)))
		}

		// show json access token
		if at, ok := jr["access_token"]; ok {
			w.Write([]byte(fmt.Sprintf("ACCESS TOKEN: %s<br/>\n", at)))
		}

		w.Write([]byte(fmt.Sprintf("FULL RESULT: %+v<br/>\n", jr)))

		// output links
		w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Goto Token URL</a><br/>", aurl)))

		cururl := *r.URL
		curq := cururl.Query()
		curq.Add("doparse", "1")
		cururl.RawQuery = curq.Encode()
		w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Download Token</a><br/>", cururl.String())))

		if rt, ok := jr["refresh_token"]; ok {
			rurl := fmt.Sprintf("/appauth/refresh?code=%s", rt)
			w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Refresh Token</a><br/>", rurl)))
		}

		if at, ok := jr["access_token"]; ok {
			rurl := fmt.Sprintf("/appauth/info?code=%s", at)
			w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Info</a><br/>", rurl)))
		}
	})

	// Application destination - TOKEN
	http.HandleFunc("/appauth/token", func(w http.ResponseWriter, r *http.Request) {
		r.ParseForm()

		w.Write([]byte("<html><body>"))
		w.Write([]byte("APP AUTH - TOKEN<br/>"))

		w.Write([]byte("Response data in fragment - not acessible via server - Nothing to do"))

		w.Write([]byte("</body></html>"))
	})

	// Application destination - PASSWORD
	http.HandleFunc("/appauth/password", func(w http.ResponseWriter, r *http.Request) {
		r.ParseForm()

		w.Write([]byte("<html><body>"))
		w.Write([]byte("APP AUTH - PASSWORD<br/>"))

		jr := make(map[string]interface{})

		// build access code url
		aurl := fmt.Sprintf("/token?grant_type=password&scope=everything&username=%s&password=%s",
			"test", "test")

		// download token
		err := example.DownloadAccessToken(fmt.Sprintf("http://localhost:14000%s", aurl),
			&osin.BasicAuth{Username: "******", Password: "******"}, jr)
		if err != nil {
			w.Write([]byte(err.Error()))
			w.Write([]byte("<br/>"))
		}

		// show json error
		if erd, ok := jr["error"]; ok {
			w.Write([]byte(fmt.Sprintf("ERROR: %s<br/>\n", erd)))
		}

		// show json access token
		if at, ok := jr["access_token"]; ok {
			w.Write([]byte(fmt.Sprintf("ACCESS TOKEN: %s<br/>\n", at)))
		}

		w.Write([]byte(fmt.Sprintf("FULL RESULT: %+v<br/>\n", jr)))

		if rt, ok := jr["refresh_token"]; ok {
			rurl := fmt.Sprintf("/appauth/refresh?code=%s", rt)
			w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Refresh Token</a><br/>", rurl)))
		}

		if at, ok := jr["access_token"]; ok {
			rurl := fmt.Sprintf("/appauth/info?code=%s", at)
			w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Info</a><br/>", rurl)))
		}

		w.Write([]byte("</body></html>"))
	})

	// Application destination - CLIENT_CREDENTIALS
	http.HandleFunc("/appauth/client_credentials", func(w http.ResponseWriter, r *http.Request) {
		r.ParseForm()

		w.Write([]byte("<html><body>"))
		w.Write([]byte("APP AUTH - CLIENT CREDENTIALS<br/>"))

		jr := make(map[string]interface{})

		// build access code url
		aurl := fmt.Sprintf("/token?grant_type=client_credentials")

		// download token
		err := example.DownloadAccessToken(fmt.Sprintf("http://localhost:14000%s", aurl),
			&osin.BasicAuth{Username: "******", Password: "******"}, jr)
		if err != nil {
			w.Write([]byte(err.Error()))
			w.Write([]byte("<br/>"))
		}

		// show json error
		if erd, ok := jr["error"]; ok {
			w.Write([]byte(fmt.Sprintf("ERROR: %s<br/>\n", erd)))
		}

		// show json access token
		if at, ok := jr["access_token"]; ok {
			w.Write([]byte(fmt.Sprintf("ACCESS TOKEN: %s<br/>\n", at)))
		}

		w.Write([]byte(fmt.Sprintf("FULL RESULT: %+v<br/>\n", jr)))

		if rt, ok := jr["refresh_token"]; ok {
			rurl := fmt.Sprintf("/appauth/refresh?code=%s", rt)
			w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Refresh Token</a><br/>", rurl)))
		}

		if at, ok := jr["access_token"]; ok {
			rurl := fmt.Sprintf("/appauth/info?code=%s", at)
			w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Info</a><br/>", rurl)))
		}

		w.Write([]byte("</body></html>"))
	})

	// Application destination - ASSERTION
	http.HandleFunc("/appauth/assertion", func(w http.ResponseWriter, r *http.Request) {
		r.ParseForm()

		w.Write([]byte("<html><body>"))
		w.Write([]byte("APP AUTH - ASSERTION<br/>"))

		jr := make(map[string]interface{})

		// build access code url
		aurl := fmt.Sprintf("/token?grant_type=assertion&assertion_type=urn:osin.example.complete&assertion=osin.data")

		// download token
		err := example.DownloadAccessToken(fmt.Sprintf("http://localhost:14000%s", aurl),
			&osin.BasicAuth{Username: "******", Password: "******"}, jr)
		if err != nil {
			w.Write([]byte(err.Error()))
			w.Write([]byte("<br/>"))
		}

		// show json error
		if erd, ok := jr["error"]; ok {
			w.Write([]byte(fmt.Sprintf("ERROR: %s<br/>\n", erd)))
		}

		// show json access token
		if at, ok := jr["access_token"]; ok {
			w.Write([]byte(fmt.Sprintf("ACCESS TOKEN: %s<br/>\n", at)))
		}

		w.Write([]byte(fmt.Sprintf("FULL RESULT: %+v<br/>\n", jr)))

		if rt, ok := jr["refresh_token"]; ok {
			rurl := fmt.Sprintf("/appauth/refresh?code=%s", rt)
			w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Refresh Token</a><br/>", rurl)))
		}

		if at, ok := jr["access_token"]; ok {
			rurl := fmt.Sprintf("/appauth/info?code=%s", at)
			w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Info</a><br/>", rurl)))
		}

		w.Write([]byte("</body></html>"))
	})

	// Application destination - REFRESH
	http.HandleFunc("/appauth/refresh", func(w http.ResponseWriter, r *http.Request) {
		r.ParseForm()

		w.Write([]byte("<html><body>"))
		w.Write([]byte("APP AUTH - REFRESH<br/>"))
		defer w.Write([]byte("</body></html>"))

		code := r.Form.Get("code")

		if code == "" {
			w.Write([]byte("Nothing to do"))
			return
		}

		jr := make(map[string]interface{})

		// build access code url
		aurl := fmt.Sprintf("/token?grant_type=refresh_token&refresh_token=%s", url.QueryEscape(code))

		// download token
		err := example.DownloadAccessToken(fmt.Sprintf("http://localhost:14000%s", aurl),
			&osin.BasicAuth{Username: "******", Password: "******"}, jr)
		if err != nil {
			w.Write([]byte(err.Error()))
			w.Write([]byte("<br/>"))
		}

		// show json error
		if erd, ok := jr["error"]; ok {
			w.Write([]byte(fmt.Sprintf("ERROR: %s<br/>\n", erd)))
		}

		// show json access token
		if at, ok := jr["access_token"]; ok {
			w.Write([]byte(fmt.Sprintf("ACCESS TOKEN: %s<br/>\n", at)))
		}

		w.Write([]byte(fmt.Sprintf("FULL RESULT: %+v<br/>\n", jr)))

		if rt, ok := jr["refresh_token"]; ok {
			rurl := fmt.Sprintf("/appauth/refresh?code=%s", rt)
			w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Refresh Token</a><br/>", rurl)))
		}

		if at, ok := jr["access_token"]; ok {
			rurl := fmt.Sprintf("/appauth/info?code=%s", at)
			w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Info</a><br/>", rurl)))
		}
	})

	// Application destination - INFO
	http.HandleFunc("/appauth/info", func(w http.ResponseWriter, r *http.Request) {
		r.ParseForm()

		w.Write([]byte("<html><body>"))
		w.Write([]byte("APP AUTH - INFO<br/>"))
		defer w.Write([]byte("</body></html>"))

		code := r.Form.Get("code")

		if code == "" {
			w.Write([]byte("Nothing to do"))
			return
		}

		jr := make(map[string]interface{})

		// build access code url
		aurl := fmt.Sprintf("/info?code=%s", url.QueryEscape(code))

		// download token
		err := example.DownloadAccessToken(fmt.Sprintf("http://localhost:14000%s", aurl),
			&osin.BasicAuth{Username: "******", Password: "******"}, jr)
		if err != nil {
			w.Write([]byte(err.Error()))
			w.Write([]byte("<br/>"))
		}

		// show json error
		if erd, ok := jr["error"]; ok {
			w.Write([]byte(fmt.Sprintf("ERROR: %s<br/>\n", erd)))
		}

		// show json access token
		if at, ok := jr["access_token"]; ok {
			w.Write([]byte(fmt.Sprintf("ACCESS TOKEN: %s<br/>\n", at)))
		}

		w.Write([]byte(fmt.Sprintf("FULL RESULT: %+v<br/>\n", jr)))

		if rt, ok := jr["refresh_token"]; ok {
			rurl := fmt.Sprintf("/appauth/refresh?code=%s", rt)
			w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Refresh Token</a><br/>", rurl)))
		}
	})

	http.ListenAndServe(":14000", nil)
}
Example #3
0
func main() {
	// create http muxes
	serverhttp := http.NewServeMux()
	clienthttp := http.NewServeMux()

	// create server
	config := osin.NewServerConfig()
	sstorage := example.NewTestStorage()
	sstorage.SetClient("1234", &osin.DefaultClient{
		Id:          "1234",
		Secret:      "aabbccdd",
		RedirectUri: "http://localhost:14001/appauth",
	})
	server := osin.NewServer(config, sstorage)

	// create client
	cliconfig := &osincli.ClientConfig{
		ClientId:     "1234",
		ClientSecret: "aabbccdd",
		AuthorizeUrl: "http://localhost:14000/authorize",
		TokenUrl:     "http://localhost:14000/token",
		RedirectUrl:  "http://localhost:14001/appauth",
	}
	client, err := osincli.NewClient(cliconfig)
	if err != nil {
		panic(err)
	}

	// create a new request to generate the url
	areq := client.NewAuthorizeRequest(osincli.CODE)

	// SERVER

	// Authorization code endpoint
	serverhttp.HandleFunc("/authorize", func(w http.ResponseWriter, r *http.Request) {
		resp := server.NewResponse()
		defer resp.Close()

		if ar := server.HandleAuthorizeRequest(resp, r); ar != nil {
			if !example.HandleLoginPage(ar, w, r) {
				return
			}
			ar.Authorized = true
			server.FinishAuthorizeRequest(resp, r, ar)
		}
		if resp.IsError && resp.InternalError != nil {
			fmt.Printf("ERROR: %s\n", resp.InternalError)
		}
		osin.OutputJSON(resp, w, r)
	})

	// Access token endpoint
	serverhttp.HandleFunc("/token", func(w http.ResponseWriter, r *http.Request) {
		resp := server.NewResponse()
		defer resp.Close()

		if ar := server.HandleAccessRequest(resp, r); ar != nil {
			ar.Authorized = true
			server.FinishAccessRequest(resp, r, ar)
		}
		if resp.IsError && resp.InternalError != nil {
			fmt.Printf("ERROR: %s\n", resp.InternalError)
		}
		osin.OutputJSON(resp, w, r)
	})

	// Information endpoint
	serverhttp.HandleFunc("/info", func(w http.ResponseWriter, r *http.Request) {
		resp := server.NewResponse()
		defer resp.Close()

		if ir := server.HandleInfoRequest(resp, r); ir != nil {
			server.FinishInfoRequest(resp, r, ir)
		}
		osin.OutputJSON(resp, w, r)
	})

	// CLIENT

	// Home
	clienthttp.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		u := areq.GetAuthorizeUrl()

		w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Login</a>", u.String())))
	})

	// Auth endpoint
	clienthttp.HandleFunc("/appauth", func(w http.ResponseWriter, r *http.Request) {
		// parse a token request
		areqdata, err := areq.HandleRequest(r)
		if err != nil {
			w.Write([]byte(fmt.Sprintf("ERROR: %s\n", err)))
			return
		}

		treq := client.NewAccessRequest(osincli.AUTHORIZATION_CODE, areqdata)

		// show access request url (for debugging only)
		u2 := treq.GetTokenUrl()
		w.Write([]byte(fmt.Sprintf("Access token URL: %s\n", u2.String())))

		// exchange the authorize token for the access token
		ad, err := treq.GetToken()
		if err != nil {
			w.Write([]byte(fmt.Sprintf("ERROR: %s\n", err)))
			return
		}
		w.Write([]byte(fmt.Sprintf("Access token: %+v\n", ad)))
	})

	go http.ListenAndServe(":14001", clienthttp)
	http.ListenAndServe(":14000", serverhttp)
}
Example #4
0
func main() {
	config := osin.NewServerConfig()
	// goauth2 checks errors using status codes
	config.ErrorStatusCode = 401

	server := osin.NewServer(config, example.NewTestStorage())

	client := &oauth2.Config{
		ClientID:     "1234",
		ClientSecret: "aabbccdd",
		Endpoint: oauth2.Endpoint{
			AuthURL:  "http://localhost:14000/authorize",
			TokenURL: "http://localhost:14000/token",
		},
		RedirectURL: "http://localhost:14000/appauth/code",
	}

	// Authorization code endpoint
	http.HandleFunc("/authorize", func(w http.ResponseWriter, r *http.Request) {
		resp := server.NewResponse()
		defer resp.Close()

		if ar := server.HandleAuthorizeRequest(resp, r); ar != nil {
			if !example.HandleLoginPage(ar, w, r) {
				return
			}
			ar.Authorized = true
			server.FinishAuthorizeRequest(resp, r, ar)
		}
		if resp.IsError && resp.InternalError != nil {
			fmt.Printf("ERROR: %s\n", resp.InternalError)
		}
		osin.OutputJSON(resp, w, r)
	})

	// Access token endpoint
	http.HandleFunc("/token", func(w http.ResponseWriter, r *http.Request) {
		resp := server.NewResponse()
		defer resp.Close()

		if ar := server.HandleAccessRequest(resp, r); ar != nil {
			ar.Authorized = true
			server.FinishAccessRequest(resp, r, ar)
		}
		if resp.IsError && resp.InternalError != nil {
			fmt.Printf("ERROR: %s\n", resp.InternalError)
		}
		osin.OutputJSON(resp, w, r)
	})

	// Information endpoint
	http.HandleFunc("/info", func(w http.ResponseWriter, r *http.Request) {
		resp := server.NewResponse()
		defer resp.Close()

		if ir := server.HandleInfoRequest(resp, r); ir != nil {
			server.FinishInfoRequest(resp, r, ir)
		}
		osin.OutputJSON(resp, w, r)
	})

	// Application home endpoint
	http.HandleFunc("/app", func(w http.ResponseWriter, r *http.Request) {
		w.Write([]byte("<html><body>"))
		//w.Write([]byte(fmt.Sprintf("<a href=\"/authorize?response_type=code&client_id=1234&state=xyz&scope=everything&redirect_uri=%s\">Login</a><br/>", url.QueryEscape("http://localhost:14000/appauth/code"))))
		w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Login</a><br/>", client.AuthCodeURL(""))))
		w.Write([]byte("</body></html>"))
	})

	// Application destination - CODE
	http.HandleFunc("/appauth/code", func(w http.ResponseWriter, r *http.Request) {
		r.ParseForm()

		code := r.Form.Get("code")

		w.Write([]byte("<html><body>"))
		w.Write([]byte("APP AUTH - CODE<br/>"))
		defer w.Write([]byte("</body></html>"))

		if code == "" {
			w.Write([]byte("Nothing to do"))
			return
		}

		var jr *oauth2.Token
		var err error

		// if parse, download and parse json
		if r.Form.Get("doparse") == "1" {
			jr, err = client.Exchange(oauth2.NoContext, code)
			if err != nil {
				jr = nil
				w.Write([]byte(fmt.Sprintf("ERROR: %s<br/>\n", err)))
			}
		}

		// show json access token
		if jr != nil {
			w.Write([]byte(fmt.Sprintf("ACCESS TOKEN: %s<br/>\n", jr.AccessToken)))
			if jr.RefreshToken != "" {
				w.Write([]byte(fmt.Sprintf("REFRESH TOKEN: %s<br/>\n", jr.RefreshToken)))
			}
		}

		w.Write([]byte(fmt.Sprintf("FULL RESULT: %+v<br/>\n", jr)))

		cururl := *r.URL
		curq := cururl.Query()
		curq.Add("doparse", "1")
		cururl.RawQuery = curq.Encode()
		w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Download Token</a><br/>", cururl.String())))
	})

	http.ListenAndServe(":14000", nil)
}