grafana/grafana-kiosk

package kiosk

import (
    "context"
    "log"
    "os"
    "strings"
    "time"

    "github.com/chromedp/chromedp"
    "github.com/chromedp/chromedp/kb"
)

// GrafanaKioskLocal creates a chrome-based kiosk using a local grafana-server account.
func GrafanaKioskLocal(cfg *Config, messages chan string) {
    dir, err := os.MkdirTemp(os.TempDir(), "chromedp-kiosk")
    if err != nil {
        panic(err)
    }

    log.Println("Using temp dir:", dir)
    defer os.RemoveAll(dir)

    opts := generateExecutorOptions(dir, cfg)

    allocCtx, cancel := chromedp.NewExecAllocator(context.Background(), opts...)
    defer cancel()

    // also set up a custom logger
    taskCtx, cancel := chromedp.NewContext(allocCtx, chromedp.WithLogf(log.Printf))
    defer cancel()

    listenChromeEvents(taskCtx, cfg, targetCrashed)

    // ensure that the browser process is started
    if err := chromedp.Run(taskCtx); err != nil {
        panic(err)
    }

    var generatedURL = GenerateURL(cfg.Target.URL, cfg.General.Mode, cfg.General.AutoFit, cfg.Target.IsPlayList)

    log.Println("Navigating to ", generatedURL)
    /*
        Launch chrome and login with local user account

        name=user, type=text
        id=inputPassword, type=password, name=password
    */
    // Give browser time to load
    log.Printf("Sleeping %d MS before navigating to url", cfg.General.PageLoadDelayMS)
    time.Sleep(time.Duration(cfg.General.PageLoadDelayMS) * time.Millisecond)

    if cfg.GoAuth.AutoLogin {
        // if AutoLogin is set, get the base URL and append the local login bypass before navigating to the full url
        startIndex := strings.Index(cfg.Target.URL, "://") + 3
        endIndex := strings.Index(cfg.Target.URL[startIndex:], "/") + startIndex
        baseURL := cfg.Target.URL[:endIndex]
        bypassURL := baseURL + "/login/local"

        log.Println("Bypassing Azure AD autoLogin at ", bypassURL)

        if err := chromedp.Run(taskCtx,
            chromedp.Navigate(bypassURL),
            chromedp.WaitVisible(`//input[@name="user"]`, chromedp.BySearch),
            chromedp.SendKeys(`//input[@name="user"]`, cfg.Target.Username, chromedp.BySearch),
            chromedp.SendKeys(`//input[@name="password"]`, cfg.Target.Password+kb.Enter, chromedp.BySearch),
            chromedp.WaitVisible(`//img[@alt="User avatar"]`, chromedp.BySearch),
            chromedp.Navigate(generatedURL),
        ); err != nil {
            panic(err)
        }
    } else {
        if err := chromedp.Run(taskCtx,
            chromedp.Navigate(generatedURL),
            chromedp.WaitVisible(`//input[@name="user"]`, chromedp.BySearch),
            chromedp.SendKeys(`//input[@name="user"]`, cfg.Target.Username, chromedp.BySearch),
            chromedp.SendKeys(`//input[@name="password"]`, cfg.Target.Password+kb.Enter, chromedp.BySearch),
        ); err != nil {
            panic(err)
        }
    }

    // blocking wait
    for {
        messageFromChrome := <-messages
        if err := chromedp.Run(taskCtx,
            chromedp.Navigate(generatedURL),
        ); err != nil {
            panic(err)
        }
        log.Println("Chromium output:", messageFromChrome)
    }
}