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package main | |
import ( | |
"encoding/json" | |
"io/ioutil" | |
"log" | |
"net/http" | |
) | |
type loginSchema struct { | |
Username string `json:"username"` | |
Password string `json:"password"` | |
} | |
// Return `true`, nil if given user and password exist in database. | |
func loginUser(username string, password string) (bool, error) {...} | |
func loginHandler(w http.ResponseWriter, r *http.Request) { | |
if r.Method != http.MethodPost { | |
w.WriteHeader(405) // Return 405 Method Not Allowed. | |
return | |
} | |
// Read request body. | |
body, _ := ioutil.ReadAll(r.Body) | |
// Parse body as json. | |
var schema loginSchema | |
json.Unmarshal(body, &schema) | |
ok, _ := loginUser(schema.Username, schema.Password) | |
if !ok { | |
w.WriteHeader(401) // Wrong password or username, Return 401. | |
} else { | |
w.WriteHeader(200) // Successfully logged in. | |
} | |
} | |
func main() { | |
http.HandleFunc("/login/", loginHandler) | |
log.Fatal(http.ListenAndServe(":8080", nil)) | |
} |
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