/
client.go
132 lines (113 loc) · 2.99 KB
/
client.go
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package main
import (
"context"
"encoding/json"
"fmt"
"io"
"log"
"net/http"
"time"
"golang.org/x/oauth2"
"golang.org/x/oauth2/clientcredentials"
)
const (
authServerURL = "http://localhost:9096"
)
var (
config = oauth2.Config{
ClientID: "222222",
ClientSecret: "22222222",
Scopes: []string{"all"},
RedirectURL: "http://localhost:9094/oauth2",
Endpoint: oauth2.Endpoint{
AuthURL: authServerURL + "/authorize",
TokenURL: authServerURL + "/token",
},
}
globalToken *oauth2.Token // Non-concurrent security
)
func main() {
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
u := config.AuthCodeURL("xyz")
http.Redirect(w, r, u, http.StatusFound)
})
http.HandleFunc("/oauth2", func(w http.ResponseWriter, r *http.Request) {
r.ParseForm()
state := r.Form.Get("state")
if state != "xyz" {
http.Error(w, "State invalid", http.StatusBadRequest)
return
}
code := r.Form.Get("code")
if code == "" {
http.Error(w, "Code not found", http.StatusBadRequest)
return
}
token, err := config.Exchange(context.Background(), code)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
globalToken = token
e := json.NewEncoder(w)
e.SetIndent("", " ")
e.Encode(token)
})
http.HandleFunc("/refresh", func(w http.ResponseWriter, r *http.Request) {
if globalToken == nil {
http.Redirect(w, r, "/", http.StatusFound)
return
}
globalToken.Expiry = time.Now()
token, err := config.TokenSource(context.Background(), globalToken).Token()
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
globalToken = token
e := json.NewEncoder(w)
e.SetIndent("", " ")
e.Encode(token)
})
http.HandleFunc("/try", func(w http.ResponseWriter, r *http.Request) {
if globalToken == nil {
http.Redirect(w, r, "/", http.StatusFound)
return
}
resp, err := http.Get(fmt.Sprintf("%s/test?access_token=%s", authServerURL, globalToken.AccessToken))
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
defer resp.Body.Close()
io.Copy(w, resp.Body)
})
http.HandleFunc("/pwd", func(w http.ResponseWriter, r *http.Request) {
token, err := config.PasswordCredentialsToken(context.Background(), "test", "test")
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
globalToken = token
e := json.NewEncoder(w)
e.SetIndent("", " ")
e.Encode(token)
})
http.HandleFunc("/client", func(w http.ResponseWriter, r *http.Request) {
cfg := clientcredentials.Config{
ClientID: config.ClientID,
ClientSecret: config.ClientSecret,
TokenURL: config.Endpoint.TokenURL,
}
token, err := cfg.Token(context.Background())
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
e := json.NewEncoder(w)
e.SetIndent("", " ")
e.Encode(token)
})
log.Println("Client is running at 9094 port.")
log.Fatal(http.ListenAndServe(":9094", nil))
}