login form ok

login/.gitignore

@@ -0,0 +1 @@
+login

login/login.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"io/ioutil"
+	"net/http"
+)
+
+func checkLogin(username, password string) (bool, error) {
+	j, err := json.Marshal(map[string]string{
+		"username": username,
+		"password": password,
+	})
+	if err != nil {
+		return false, err
+	}
+
+	resp, err := http.Post(URLLogin, "application/json", bytes.NewReader(j))
+	if err != nil {
+		return false, err
+	}
+
+	if resp.StatusCode != http.StatusOK {
+		cnt, _ := ioutil.ReadAll(resp.Body)
+		return false, errors.New(string(cnt))
+	}
+
+	return true, nil
+}

login/main.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	gc "github.com/rthornton128/goncurses"
+)
+
+const URLLogin = "http://127.0.0.1:8081/login"
+
+func goLogin(stdscr *gc.Window, in chan gc.Key) (string, bool) {
+	username, password := login(stdscr, in)
+
+	validator := make(chan error)
+	go func(username, password string, progress chan error) {
+		_, err := checkLogin(username, password)
+		progress <- err
+	}(username, password, validator)
+
+	if connection(stdscr, in, validator) {
+		return username, true
+	} else {
+		return goLogin(stdscr, in)
+	}
+}
+
+func main() {
+	stdscr, _ := gc.Init()
+	defer gc.End()
+
+	// Set main properties
+	gc.Cursor(0)
+	gc.StartColor()
+	gc.Raw(true)
+	gc.Echo(false)
+	stdscr.Keypad(true)
+
+	// Define colors
+	gc.InitPair(1, gc.C_WHITE, gc.C_BLUE)
+	gc.InitPair(2, gc.C_GREEN, gc.C_BLACK)
+	gc.InitPair(3, gc.C_CYAN, gc.C_BLACK)
+	gc.InitPair(4, gc.C_RED, gc.C_BLACK)
+
+	// Register pressed key through channel
+	in := make(chan gc.Key)
+	go func(w *gc.Window, ch chan<- gc.Key) {
+		for {
+			ch <- w.GetChar()
+		}
+	}(stdscr, in)
+
+	// Run!
+	if username, ok := goLogin(stdscr, in); ok {
+		okreboot(stdscr, username)
+	}
+}

login/windows.go

@@ -0,0 +1,246 @@
+package main
+
+import (
+	"strings"
+	"time"
+	gc "github.com/rthornton128/goncurses"
+)
+
+func login(stdscr *gc.Window, in chan gc.Key) (username , password string) {
+	gc.Cursor(1)
+	stdscr.Clear()
+
+	// Initialize the fields and Set field options
+	fields := make([]*gc.Field, 3)
+	fields[0], _ = gc.NewField(1, 15, 2, 18, 0, 0)
+	defer fields[0].Free()
+	fields[0].SetBackground(gc.A_UNDERLINE)
+	fields[0].SetOptionsOff(gc.FO_AUTOSKIP)
+
+	fields[1], _ = gc.NewField(1, 15, 4, 18, 0, 0)
+	defer fields[1].Free()
+	fields[1].SetBackground(gc.A_UNDERLINE)
+	fields[1].SetOptionsOff(gc.FO_PUBLIC)
+	fields[1].SetOptionsOff(gc.FO_AUTOSKIP)
+
+	fields[2], _ = gc.NewField(1, 11, 7, 14, 0, 0)
+	defer fields[2].Free()
+	fields[2].SetBuffer("< Connect >")
+	fields[2].SetBackground(gc.ColorPair(1))
+	fields[2].SetOptionsOff(gc.FO_EDIT)
+	fields[2].SetOptionsOff(gc.FO_AUTOSKIP)
+
+	// Create the form and post it
+	form, _ := gc.NewForm(fields)
+	defer form.Free()
+
+	// Create the window to be associated with the form
+	rows, cols := stdscr.MaxYX()
+	height, width := 14, 40
+	y, x := (rows-height)/2, (cols-width)/2
+
+	mainwin, _ := gc.NewWindow(height, width, y, x)
+	defer mainwin.Delete()
+	defer mainwin.Erase()
+	mainwin.Keypad(true)
+
+	// Set main window and sub window
+	form.SetWindow(mainwin)
+	form.SetSub(mainwin.Derived(8, 38, 3, 1))
+
+	// Print a border around the main window and print a title
+	mainwin.Box(0, 0)
+
+	y, x = mainwin.MaxYX()
+	title := "SRS ADLIN - Login"
+	mainwin.ColorOn(2)
+	mainwin.MovePrint(1, (x/2)-(len(title)/2), title)
+	mainwin.ColorOff(1)
+	mainwin.MoveAddChar(2, 0, gc.ACS_LTEE)
+	mainwin.HLine(2, 1, gc.ACS_HLINE, x-2)
+	mainwin.MoveAddChar(2, x-1, gc.ACS_RTEE)
+	stdscr.Refresh()
+
+	form.Post()
+	defer form.UnPost()
+
+	mainwin.MovePrint(5, 6, "Login:")
+	mainwin.MovePrint(7, 6, "Password:")
+
+	form.Driver(gc.REQ_FIRST_FIELD)
+
+	stdscr.Refresh()
+	mainwin.Refresh()
+
+login:
+	for {
+		select {
+		case ch := <- in:
+			switch ch {
+			case gc.KEY_DOWN, gc.KEY_TAB:
+				form.Driver(gc.REQ_NEXT_FIELD)
+				form.Driver(gc.REQ_END_LINE)
+			case gc.KEY_UP:
+				form.Driver(gc.REQ_PREV_FIELD)
+				form.Driver(gc.REQ_END_LINE)
+			case gc.KEY_BACKSPACE:
+				form.Driver(gc.REQ_CLR_FIELD)
+			case gc.KEY_RETURN:
+				form.Driver(gc.REQ_NEXT_FIELD)
+				form.Driver(gc.REQ_END_LINE)
+				if len(strings.TrimSpace(fields[0].Buffer())) > 0 && len(strings.TrimSpace(fields[1].Buffer())) > 0 {
+					break login
+				}
+			default:
+				form.Driver(ch)
+			}
+		}
+		mainwin.Refresh()
+	}
+
+	username = strings.TrimSpace(fields[0].Buffer())
+	password = strings.TrimSpace(fields[1].Buffer())
+
+	return
+}
+
+func connection(stdscr *gc.Window, in chan gc.Key, validator chan error) (canContinue bool) {
+	gc.Cursor(0)
+	stdscr.Clear()
+
+	// Create the window to be associated with the form
+	rows, cols := stdscr.MaxYX()
+	height, width := 10, 60
+	y, x := (rows-height)/2, (cols-width)/2
+
+	mainwin, _ := gc.NewWindow(height, width, y, x)
+	defer mainwin.Delete()
+	mainwin.Keypad(true)
+
+	// Print a border around the main window and print a title
+	mainwin.Box(0, 0)
+
+	y, x = mainwin.MaxYX()
+	title := "SRS ADLIN - Login"
+	mainwin.ColorOn(2)
+	mainwin.MovePrint(1, (x/2)-(len(title)/2), title)
+	mainwin.ColorOff(2)
+	mainwin.MoveAddChar(2, 0, gc.ACS_LTEE)
+	mainwin.HLine(2, 1, gc.ACS_HLINE, x-2)
+	mainwin.MoveAddChar(2, x-1, gc.ACS_RTEE)
+	stdscr.Refresh()
+
+	mainwin.MovePrint(4, 4, "  Please wait...")
+	mainwin.ColorOn(3)
+	mainwin.MovePrint(6, 2, "Connecting to login server...")
+	mainwin.ColorOff(3)
+
+	stdscr.Refresh()
+	mainwin.Refresh()
+
+	ticker := time.NewTicker(time.Millisecond * 150)
+
+	rotPos := 0
+loginloop:
+	for {
+		select {
+		case ch := <- in:
+			if gc.Char(ch) == gc.Char('r') {
+				break loginloop
+			}
+		case e := <- validator:
+			if e == nil {
+				canContinue = true
+				break loginloop
+			} else {
+				mainwin.ColorOn(4)
+				mainwin.MovePrint(4, 2, e.Error())
+				mainwin.ColorOff(4)
+				ticker.Stop()
+
+				mainwin.MovePrint(6, 2, "    Press any key to retry   ")
+				mainwin.Refresh()
+				<- in
+
+				break loginloop
+			}
+		case <- ticker.C:
+			switch rotPos += 1; rotPos {
+			case 0,4:
+				mainwin.MovePrint(4, 4, "|")
+			case 1,5:
+				mainwin.MovePrint(4, 4, "/")
+			case 2,6:
+				mainwin.MovePrint(4, 4, "-")
+			case 3,7:
+				mainwin.MovePrint(4, 4, "\\")
+			default:
+				mainwin.MovePrint(4, 4, "|")
+				rotPos = 0
+			}
+		}
+		mainwin.Refresh()
+	}
+	ticker.Stop()
+
+	return
+}
+
+func okreboot(stdscr *gc.Window, login string) {
+	gc.Cursor(0)
+	stdscr.Clear()
+
+	// Create the window to be associated with the form
+	rows, cols := stdscr.MaxYX()
+	height, width := 14, 42
+	y, x := (rows-height)/2, (cols-width)/2
+
+	mainwin, _ := gc.NewWindow(height, width, y, x)
+	defer mainwin.Delete()
+	mainwin.Keypad(true)
+
+	// Print a border around the main window and print a title
+	mainwin.Box(0, 0)
+
+	y, x = mainwin.MaxYX()
+	title := "SRS ADLIN"
+	mainwin.ColorOn(2)
+	mainwin.MovePrint(1, (x/2)-(len(title)/2), title)
+	mainwin.ColorOff(2)
+	mainwin.MoveAddChar(2, 0, gc.ACS_LTEE)
+	mainwin.HLine(2, 1, gc.ACS_HLINE, x-2)
+	mainwin.MoveAddChar(2, x-1, gc.ACS_RTEE)
+	stdscr.Refresh()
+
+	mainwin.ColorOn(2)
+	mainwin.MovePrint(4, 2, "You are now successfully logged in as: ")
+	mainwin.ColorOff(2)
+	mainwin.ColorOn(3)
+	mainwin.MovePrint(5, (x/2)-(len(login)/2), login)
+	mainwin.ColorOff(3)
+
+	mainwin.MovePrint(8, 2, "Your computer will automatically")
+	mainwin.MovePrint(9, 2, "reboot in a few seconds...")
+
+	mainwin.MovePrint(11, 2, "|------------------------------------|")
+
+	stdscr.Refresh()
+	mainwin.Refresh()
+
+	ticker := time.NewTicker(time.Millisecond * 98)
+
+	pos := 0
+rebootloop:
+	for {
+		select {
+		case <- ticker.C:
+			mainwin.MovePrint(11, 3 + pos, "*")
+			pos += 1
+			if pos > 36 {
+				break rebootloop
+			}
+		}
+		mainwin.Refresh()
+	}
+	ticker.Stop()
+}