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webserver.go
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webserver.go
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package main
import (
"fmt"
"io/ioutil"
"log"
"net/http"
"path"
"strings"
"time"
"github.com/gorilla/mux"
)
/////////////////////////////// STATIC FILE SERVE
type FileHandler struct {
baseFolder string
}
func (ah FileHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
// Updated to pass ah.appContext as a parameter to our handler type.
status := 200
file := path.Join(path.Dir(ah.baseFolder), r.URL.Path)
data, err := ioutil.ReadFile(file)
if err != nil {
fmt.Println(err.Error())
status = http.StatusNotFound
} else {
w.Write(data)
}
if err != nil {
log.Printf("HTTP %d: %q", status, err)
switch status {
case http.StatusNotFound:
http.NotFound(w, r)
// And if we wanted a friendlier error page:
// err := ah.renderTemplate(w, "http_404.tmpl", nil)
case http.StatusInternalServerError:
http.Error(w, http.StatusText(status), status)
default:
http.Error(w, http.StatusText(status), status)
}
}
}
// ServeStatic serves static files
func ServeStatic(baseDirectory string) FileHandler {
result := FileHandler{baseDirectory}
return result
}
// HandleRequest Creates a handler to handle web requests
func HandleRequest(RequestHandler http.HandlerFunc) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
RequestHandler.ServeHTTP(w, r)
})
}
// HomePageHandler handles homepage requests
func HomePageHandler(w http.ResponseWriter, r *http.Request) {
//vars := mux.Vars(r)
err := writeFile("/index.html", w)
if err != nil {
fmt.Println(err.Error())
}
fmt.Println("Served Home Page")
}
// DashboardPageHandler handles homepage requests
func DashboardPageHandler(w http.ResponseWriter, r *http.Request) {
//vars := mux.Vars(r)
writeFile("/dashboard.html", w)
user, _, _ := r.BasicAuth()
w.Write([]byte("<script>var userName = '" + user + "';</script>"))
fmt.Println("Served Dashboard Page")
}
// LoginPageHandler handles login events
func LoginPageHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
var err error
w.WriteHeader(http.StatusOK)
if r.Method == "POST" {
if vars["username"] == "" || vars["password"] == "" {
writeFile("/login.html", w)
w.Write([]byte("<script>var errorMessageData = 'Failed To Login';</script>"))
fmt.Println("Failed login")
return
}
if v, ok := UserTable[vars["username"]]; ok {
// found a user
fmt.Println("User found testing password")
if !v.CheckPassword(vars["password"]) {
fmt.Println("Failed to validate password")
writeFile("/login.html", w)
w.Write([]byte("<script>var errorMessageData = 'Failed Login - user or password incorrect';</script>"))
return
}
// they are good, lets redirect to the logged in page
securityCookie := &http.Cookie{}
securityCookie.Expires = time.Now().Add(time.Hour * time.Duration(1))
securityCookie.Domain = r.URL.Host
securityCookie.Value, _ = Encrypt("SECURE-" + vars["username"] + "/" + fmt.Sprint(time.Now().Second()))
securityCookie.Name = "session"
http.SetCookie(w, securityCookie)
http.Redirect(w, r, "/dashboard.html", http.StatusTemporaryRedirect)
}
fmt.Println("Failed to locate user")
err = writeFile("/login.html", w)
if err == nil {
w.Write([]byte("<script>var errorMessageData = 'Failed Login - user or password incorrect';</script>"))
}
} else {
writeFile("/login.html", w)
w.Write([]byte("<script>var errorMessageData = '';</script>"))
}
}
func writeFile(filename string, w http.ResponseWriter) error {
if strings.Contains(strings.ToLower(filename), "html") {
w.Header().Add("Content-Type", "text/html")
}
result, err := ioutil.ReadFile("html" + filename)
if err != nil {
w.WriteHeader(404)
return err
}
w.Write(result)
return nil
}