Merge 9b3a3d0977 into 1973a65635

feat(dev): change default npm dev script to device mode and add wrapper script to set environment variable and proxy signal api (#157 )
feat: use the api url from device config (#161 )
2025-02-17 16:37:37 +01:00 · 2025-02-17 16:29:42 +01:00 · 2025-02-17 11:34:38 +01:00 · 2025-02-17 11:02:28 +01:00 · 2025-02-17 11:00:28 +01:00 · 2025-01-03 11:41:57 +01:00
32 changed files with 685 additions and 111 deletions
--- a/13
+++ b/13
@ -1,12 +1,21 @@
+BRANCH    ?= $(shell git rev-parse --abbrev-ref HEAD)
+BUILDDATE ?= $(shell date --iso-8601=seconds)
+REVISION  ?= $(shell git rev-parse HEAD)
 VERSION_DEV := 0.3.5-dev$(shell date +%Y%m%d%H%M)
 VERSION := 0.3.4

+GO_LDFLAGS := \
+  -s -w \
+  -X github.com/prometheus/common/version.Branch=$(BRANCH) \
+  -X github.com/prometheus/common/version.BuildDate=$(BUILDDATE) \
+  -X github.com/prometheus/common/version.Revision=$(REVISION)
+
 hash_resource:
 	@shasum -a 256 resource/jetkvm_native | cut -d ' ' -f 1 > resource/jetkvm_native.sha256

 build_dev: hash_resource
 	@echo "Building..."
-	GOOS=linux GOARCH=arm GOARM=7 go build -ldflags="-s -w -X kvm.builtAppVersion=$(VERSION_DEV)" -o bin/jetkvm_app cmd/main.go
+	GOOS=linux GOARCH=arm GOARM=7 go build -ldflags="$(GO_LDFLAGS) -X kvm.builtAppVersion=$(VERSION_DEV)" -o bin/jetkvm_app cmd/main.go

 frontend:
 	cd ui && npm ci && npm run build:device
@ -19,7 +28,7 @@ dev_release: build_dev

 build_release: frontend hash_resource
 	@echo "Building release..."
-	GOOS=linux GOARCH=arm GOARM=7 go build -ldflags="-s -w -X kvm.builtAppVersion=$(VERSION)" -o bin/jetkvm_app cmd/main.go
+	GOOS=linux GOARCH=arm GOARM=7 go build -ldflags="$(GO_LDFLAGS) -X kvm.builtAppVersion=$(VERSION)" -o bin/jetkvm_app cmd/main.go

 release:
 	@if rclone lsf r2://jetkvm-update/app/$(VERSION)/ | grep -q "jetkvm_app"; then \
--- a/config.go
+++ b/config.go
@ -23,6 +23,9 @@ type Config struct {
 	LocalAuthMode        string            `json:"localAuthMode"` //TODO: fix it with migration
 	WakeOnLanDevices     []WakeOnLanDevice `json:"wake_on_lan_devices"`
 	EdidString        string            `json:"hdmi_edid_string"`
+  DisplayMaxBrightness int               `json:"display_max_brightness"`
+	DisplayDimAfterSec   int               `json:"display_dim_after_sec"`
+	DisplayOffAfterSec   int               `json:"display_off_after_sec"`
 }

 const configPath = "/userdata/kvm_config.json"
@ -30,6 +33,9 @@ const configPath = "/userdata/kvm_config.json"
 var defaultConfig = &Config{
 	CloudURL:             "https://api.jetkvm.com",
 	AutoUpdateEnabled:    true, // Set a default value
+	DisplayMaxBrightness: 64,
+	DisplayDimAfterSec:   120,  // 2 minutes
+	DisplayOffAfterSec:   1800, // 30 minutes
 }

 var config *Config
--- a/display.go
+++ b/display.go
@ -1,12 +1,26 @@
 package kvm

 import (
+	"errors"
 	"fmt"
 	"log"
+	"os"
+	"strconv"
 	"time"
 )

 var currentScreen = "ui_Boot_Screen"
+var backlightState = 0 // 0 - NORMAL, 1 - DIMMED, 2 - OFF
+
+var (
+	dimTicker *time.Ticker
+	offTicker *time.Ticker
+)
+
+const (
+	touchscreenDevice     string = "/dev/input/event1"
+	backlightControlClass string = "/sys/class/backlight/backlight/brightness"
+)

 func switchToScreen(screen string) {
 	_, err := CallCtrlAction("lv_scr_load", map[string]interface{}{"obj": screen})
@ -65,6 +79,7 @@ func requestDisplayUpdate() {
 		return
 	}
 	go func() {
+		wakeDisplay(false)
 		fmt.Println("display updating........................")
 		//TODO: only run once regardless how many pending updates
 		updateDisplay()
@ -83,6 +98,156 @@ func updateStaticContents() {
 	updateLabelIfChanged("ui_Status_Content_Device_Id_Content_Label", GetDeviceID())
 }

+// setDisplayBrightness sets /sys/class/backlight/backlight/brightness to alter
+// the backlight brightness of the JetKVM hardware's display.
+func setDisplayBrightness(brightness int) error {
+	// NOTE: The actual maximum value for this is 255, but out-of-the-box, the value is set to 64.
+	// The maximum set here is set to 100 to reduce the risk of drawing too much power (and besides, 255 is very bright!).
+	if brightness > 100 || brightness < 0 {
+		return errors.New("brightness value out of bounds, must be between 0 and 100")
+	}
+
+	// Check the display backlight class is available
+	if _, err := os.Stat(backlightControlClass); errors.Is(err, os.ErrNotExist) {
+		return errors.New("brightness value cannot be set, possibly not running on JetKVM hardware")
+	}
+
+	// Set the value
+	bs := []byte(strconv.Itoa(brightness))
+	err := os.WriteFile(backlightControlClass, bs, 0644)
+	if err != nil {
+		return err
+	}
+
+	fmt.Printf("display: set brightness to %v\n", brightness)
+	return nil
+}
+
+// tick_displayDim() is called when when dim ticker expires, it simply reduces the brightness
+// of the display by half of the max brightness.
+func tick_displayDim() {
+	err := setDisplayBrightness(config.DisplayMaxBrightness / 2)
+	if err != nil {
+		fmt.Printf("display: failed to dim display: %s\n", err)
+	}
+
+	dimTicker.Stop()
+
+	backlightState = 1
+}
+
+// tick_displayOff() is called when the off ticker expires, it turns off the display
+// by setting the brightness to zero.
+func tick_displayOff() {
+	err := setDisplayBrightness(0)
+	if err != nil {
+		fmt.Printf("display: failed to turn off display: %s\n", err)
+	}
+
+	offTicker.Stop()
+
+	backlightState = 2
+}
+
+// wakeDisplay sets the display brightness back to config.DisplayMaxBrightness and stores the time the display
+// last woke, ready for displayTimeoutTick to put the display back in the dim/off states.
+// Set force to true to skip the backlight state check, this should be done if altering the tickers.
+func wakeDisplay(force bool) {
+	if backlightState == 0 && !force {
+		return
+	}
+
+	// Don't try to wake up if the display is turned off.
+	if config.DisplayMaxBrightness == 0 {
+		return
+	}
+
+	err := setDisplayBrightness(config.DisplayMaxBrightness)
+	if err != nil {
+		fmt.Printf("display wake failed, %s\n", err)
+	}
+
+	if config.DisplayDimAfterSec != 0 {
+		dimTicker.Reset(time.Duration(config.DisplayDimAfterSec) * time.Second)
+	}
+
+	if config.DisplayOffAfterSec != 0 {
+		offTicker.Reset(time.Duration(config.DisplayOffAfterSec) * time.Second)
+	}
+	backlightState = 0
+}
+
+// watchTsEvents monitors the touchscreen for events and simply calls wakeDisplay() to ensure the
+// touchscreen interface still works even with LCD dimming/off.
+// TODO: This is quite a hack, really we should be getting an event from jetkvm_native, or the whole display backlight
+// control should be hoisted up to jetkvm_native.
+func watchTsEvents() {
+	ts, err := os.OpenFile(touchscreenDevice, os.O_RDONLY, 0666)
+	if err != nil {
+		fmt.Printf("display: failed to open touchscreen device: %s\n", err)
+		return
+	}
+
+	defer ts.Close()
+
+	// This buffer is set to 24 bytes as that's the normal size of events on /dev/input
+	// Reference: https://www.kernel.org/doc/Documentation/input/input.txt
+	// This could potentially be set higher, to require multiple events to wake the display.
+	buf := make([]byte, 24)
+	for {
+		_, err := ts.Read(buf)
+		if err != nil {
+			fmt.Printf("display: failed to read from touchscreen device: %s\n", err)
+			return
+		}
+
+		wakeDisplay(false)
+	}
+}
+
+// startBacklightTickers starts the two tickers for dimming and switching off the display
+// if they're not already set. This is done separately to the init routine as the "never dim"
+// option has the value set to zero, but time.NewTicker only accept positive values.
+func startBacklightTickers() {
+	LoadConfig()
+	// Don't start the tickers if the display is switched off.
+	// Set the display to off if that's the case.
+	if config.DisplayMaxBrightness == 0 {
+		setDisplayBrightness(0)
+		return
+	}
+
+	if dimTicker == nil && config.DisplayDimAfterSec != 0 {
+		fmt.Printf("display: dim_ticker has started\n")
+		dimTicker = time.NewTicker(time.Duration(config.DisplayDimAfterSec) * time.Second)
+		defer dimTicker.Stop()
+
+		go func() {
+			for {
+				select {
+				case <-dimTicker.C:
+					tick_displayDim()
+				}
+			}
+		}()
+	}
+
+	if offTicker == nil && config.DisplayOffAfterSec != 0 {
+		fmt.Printf("display: off_ticker has started\n")
+		offTicker = time.NewTicker(time.Duration(config.DisplayOffAfterSec) * time.Second)
+		defer offTicker.Stop()
+
+		go func() {
+			for {
+				select {
+				case <-offTicker.C:
+					tick_displayOff()
+				}
+			}
+		}()
+	}
+}
+
 func init() {
 	go func() {
 		waitCtrlClientConnected()
@ -91,6 +256,10 @@ func init() {
 		updateStaticContents()
 		displayInited = true
 		fmt.Println("display inited")
+		startBacklightTickers()
+		wakeDisplay(true)
 		requestDisplayUpdate()
 	}()
+
+	go watchTsEvents()
 }
--- a/go.mod
+++ b/go.mod
@ -14,22 +14,27 @@ require (
 	github.com/google/uuid v1.6.0
 	github.com/gwatts/rootcerts v0.0.0-20240401182218-3ab9db955caf
 	github.com/hanwen/go-fuse/v2 v2.5.1
+	github.com/hashicorp/go-envparse v0.1.0
 	github.com/openstadia/go-usb-gadget v0.0.0-20231115171102-aebd56bbb965
 	github.com/pion/logging v0.2.2
 	github.com/pion/mdns/v2 v2.0.7
 	github.com/pion/webrtc/v4 v4.0.0
 	github.com/pojntfx/go-nbd v0.3.2
+	github.com/prometheus/client_golang v1.20.5
+	github.com/prometheus/common v0.61.0
 	github.com/psanford/httpreadat v0.1.0
 	github.com/vishvananda/netlink v1.3.0
-	golang.org/x/crypto v0.28.0
-	golang.org/x/net v0.30.0
+	golang.org/x/crypto v0.30.0
+	golang.org/x/net v0.32.0
 )

 replace github.com/pojntfx/go-nbd v0.3.2 => github.com/chemhack/go-nbd v0.0.0-20241006125820-59e45f5b1e7b

 require (
+	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/bytedance/sonic v1.11.6 // indirect
 	github.com/bytedance/sonic/loader v0.1.1 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/cloudwego/base64x v0.1.4 // indirect
 	github.com/cloudwego/iasm v0.2.0 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.3 // indirect
@ -40,12 +45,13 @@ require (
 	github.com/go-playground/validator/v10 v10.20.0 // indirect
 	github.com/goccy/go-json v0.10.2 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/compress v1.17.9 // indirect
 	github.com/klauspost/cpuid/v2 v2.2.7 // indirect
-	github.com/kr/pretty v0.3.0 // indirect
 	github.com/leodido/go-urn v1.4.0 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.2 // indirect
 	github.com/pilebones/go-udev v0.9.0 // indirect
 	github.com/pion/datachannel v1.5.9 // indirect
@ -61,16 +67,16 @@ require (
 	github.com/pion/stun/v3 v3.0.0 // indirect
 	github.com/pion/transport/v3 v3.0.7 // indirect
 	github.com/pion/turn/v4 v4.0.0 // indirect
-	github.com/rogpeppe/go-internal v1.8.0 // indirect
+	github.com/prometheus/client_model v0.6.1 // indirect
+	github.com/prometheus/procfs v0.15.1 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
 	github.com/ugorji/go/codec v1.2.12 // indirect
 	github.com/vishvananda/netns v0.0.4 // indirect
 	github.com/wlynxg/anet v0.0.5 // indirect
 	golang.org/x/arch v0.8.0 // indirect
-	golang.org/x/oauth2 v0.21.0 // indirect
-	golang.org/x/sys v0.26.0 // indirect
-	golang.org/x/text v0.19.0 // indirect
-	google.golang.org/protobuf v1.34.0 // indirect
-	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
+	golang.org/x/oauth2 v0.24.0 // indirect
+	golang.org/x/sys v0.28.0 // indirect
+	golang.org/x/text v0.21.0 // indirect
+	google.golang.org/protobuf v1.35.2 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
--- a/go.sum
+++ b/go.sum
@ -2,10 +2,14 @@ github.com/Masterminds/semver/v3 v3.3.0 h1:B8LGeaivUe71a5qox1ICM/JLl0NqZSW5CHyL+
 github.com/Masterminds/semver/v3 v3.3.0/go.mod h1:4V+yj/TJE1HU9XfppCwVMZq3I84lprf4nC11bSS5beM=
 github.com/beevik/ntp v1.3.1 h1:Y/srlT8L1yQr58kyPWFPZIxRL8ttx2SRIpVYJqZIlAM=
 github.com/beevik/ntp v1.3.1/go.mod h1:fT6PylBq86Tsq23ZMEe47b7QQrZfYBFPnpzt0a9kJxw=
+github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
+github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bytedance/sonic v1.11.6 h1:oUp34TzMlL+OY1OUWxHqsdkgC/Zfc85zGqw9siXjrc0=
 github.com/bytedance/sonic v1.11.6/go.mod h1:LysEHSvpvDySVdC2f87zGWf6CIKJcAvqab1ZaiQtds4=
 github.com/bytedance/sonic/loader v0.1.1 h1:c+e5Pt1k/cy5wMveRDyk2X4B9hF4g7an8N3zCYjJFNM=
 github.com/bytedance/sonic/loader v0.1.1/go.mod h1:ncP89zfokxS5LZrJxl5z0UJcsk4M4yY2JpfqGeCtNLU=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/chemhack/go-nbd v0.0.0-20241006125820-59e45f5b1e7b h1:dSbDgy72Y1sjLPWLv7vs0fMFuhMBMViiT9PJZiZWZNs=
 github.com/chemhack/go-nbd v0.0.0-20241006125820-59e45f5b1e7b/go.mod h1:SehHnbi2e8NiSAKby42Itm8SIoS7b+wAprsfPH3qgYk=
 github.com/cloudwego/base64x v0.1.4 h1:jwCgWpFanWmN8xoIUHa2rtzmkd5J2plF/dnLS6Xd/0Y=
@ -16,7 +20,6 @@ github.com/coder/websocket v1.8.12 h1:5bUXkEPPIbewrnkU8LTCLVaxi4N4J8ahufH2vlo4NA
 github.com/coder/websocket v1.8.12/go.mod h1:LNVeNrXQZfe5qhS9ALED3uA+l5pPqvwXg3CKoDBB2gs=
 github.com/coreos/go-oidc/v3 v3.11.0 h1:Ia3MxdwpSw702YW0xgfmP1GVCMA9aEFWu12XUZ3/OtI=
 github.com/coreos/go-oidc/v3 v3.11.0/go.mod h1:gE3LgjOgFoHi9a4ce4/tJczr0Ai2/BoDhf0r5lltWI0=
-github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/creack/pty v1.1.23 h1:4M6+isWdcStXEf15G/RbrMPOQj1dZ7HPZCGwE4kOeP0=
 github.com/creack/pty v1.1.23/go.mod h1:08sCNb52WyoAwi2QDyzUCTgcvVFhUzewun7wtTfvcwE=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@ -40,8 +43,8 @@ github.com/go-playground/validator/v10 v10.20.0 h1:K9ISHbSaI0lyB2eWMPJo+kOS/FBEx
 github.com/go-playground/validator/v10 v10.20.0/go.mod h1:dbuPbCMFw/DrkbEynArYaCwl3amGuJotoKCe95atGMM=
 github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU=
 github.com/goccy/go-json v0.10.2/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I=
-github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
-github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
@ -49,22 +52,26 @@ github.com/gwatts/rootcerts v0.0.0-20240401182218-3ab9db955caf h1:JO6ISZIvEUitto
 github.com/gwatts/rootcerts v0.0.0-20240401182218-3ab9db955caf/go.mod h1:5Kt9XkWvkGi2OHOq0QsGxebHmhCcqJ8KCbNg/a6+n+g=
 github.com/hanwen/go-fuse/v2 v2.5.1 h1:OQBE8zVemSocRxA4OaFJbjJ5hlpCmIWbGr7r0M4uoQQ=
 github.com/hanwen/go-fuse/v2 v2.5.1/go.mod h1:xKwi1cF7nXAOBCXujD5ie0ZKsxc8GGSA1rlMJc+8IJs=
+github.com/hashicorp/go-envparse v0.1.0 h1:bE++6bhIsNCPLvgDZkYqo3nA+/PFI51pkrHdmPSDFPY=
+github.com/hashicorp/go-envparse v0.1.0/go.mod h1:OHheN1GoygLlAkTlXLXvAdnXdZxy8JUweQ1rAXx1xnc=
 github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
 github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
+github.com/klauspost/compress v1.17.9 h1:6KIumPrER1LHsvBVuDa0r5xaG0Es51mhhB9BQB2qeMA=
+github.com/klauspost/compress v1.17.9/go.mod h1:Di0epgTjJY877eYKx5yC51cX2A2Vl2ibi7bDH9ttBbw=
 github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
 github.com/klauspost/cpuid/v2 v2.2.7 h1:ZWSB3igEs+d0qvnxR/ZBzXVmxkgt8DdzP6m9pfuVLDM=
 github.com/klauspost/cpuid/v2 v2.2.7/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws=
 github.com/knz/go-libedit v1.10.1/go.mod h1:MZTVkCWyz0oBc7JOWP3wNAzd002ZbM/5hgShxwh4x8M=
-github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
-github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0=
-github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk=
+github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
+github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
-github.com/kylelemons/godebug v0.0.0-20170820004349-d65d576e9348 h1:MtvEpTB6LX3vkb4ax0b5D2DHbNAUsen0Gx5wZoq3lV4=
 github.com/kylelemons/godebug v0.0.0-20170820004349-d65d576e9348/go.mod h1:B69LEHPfb2qLo0BaaOLcbitczOKLWTsrBG9LczfCD4k=
+github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
+github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
 github.com/leodido/go-urn v1.4.0 h1:WT9HwE9SGECu3lg4d/dIA+jxlljEa1/ffXKmRjqdmIQ=
 github.com/leodido/go-urn v1.4.0/go.mod h1:bvxc+MVxLKB4z00jd1z+Dvzr47oO32F/QSNjSBOlFxI=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
@ -76,6 +83,8 @@ github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
 github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
+github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq1c1nUAm88MOHcQC9l5mIlSMApZMrHA=
+github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
 github.com/openstadia/go-usb-gadget v0.0.0-20231115171102-aebd56bbb965 h1:bZGtUfkOl0dqvem8ltx9KCYied0gSlRuDhaZDxgppN4=
 github.com/openstadia/go-usb-gadget v0.0.0-20231115171102-aebd56bbb965/go.mod h1:6cAIK2c4O3/yETSrRjmNwsBL3yE4Vcu9M9p/Qwx5+gM=
 github.com/pelletier/go-toml/v2 v2.2.2 h1:aYUidT7k73Pcl9nb2gScu7NSrKCSHIDE89b3+6Wq+LM=
@ -114,14 +123,20 @@ github.com/pion/turn/v4 v4.0.0 h1:qxplo3Rxa9Yg1xXDxxH8xaqcyGUtbHYw4QSCvmFWvhM=
 github.com/pion/turn/v4 v4.0.0/go.mod h1:MuPDkm15nYSklKpN8vWJ9W2M0PlyQZqYt1McGuxG7mA=
 github.com/pion/webrtc/v4 v4.0.0 h1:x8ec7uJQPP3D1iI8ojPAiTOylPI7Fa7QgqZrhpLyqZ8=
 github.com/pion/webrtc/v4 v4.0.0/go.mod h1:SfNn8CcFxR6OUVjLXVslAQ3a3994JhyE3Hw1jAuqEto=
-github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/prometheus/client_golang v1.20.5 h1:cxppBPuYhUnsO6yo/aoRol4L7q7UFfdm+bR9r+8l63Y=
+github.com/prometheus/client_golang v1.20.5/go.mod h1:PIEt8X02hGcP8JWbeHyeZ53Y/jReSnHgO035n//V5WE=
+github.com/prometheus/client_model v0.6.1 h1:ZKSh/rekM+n3CeS952MLRAdFwIKqeY8b62p8ais2e9E=
+github.com/prometheus/client_model v0.6.1/go.mod h1:OrxVMOVHjw3lKMa8+x6HeMGkHMQyHDk9E3jmP2AmGiY=
+github.com/prometheus/common v0.61.0 h1:3gv/GThfX0cV2lpO7gkTUwZru38mxevy90Bj8YFSRQQ=
+github.com/prometheus/common v0.61.0/go.mod h1:zr29OCN/2BsJRaFwG8QOBr41D6kkchKbpeNH7pAjb/s=
+github.com/prometheus/procfs v0.15.1 h1:YagwOFzUgYfKKHX6Dr+sHT7km/hxC76UB0learggepc=
+github.com/prometheus/procfs v0.15.1/go.mod h1:fB45yRUv8NstnjriLhBQLuOUt+WW4BsoGhij/e3PBqk=
 github.com/psanford/httpreadat v0.1.0 h1:VleW1HS2zO7/4c7c7zNl33fO6oYACSagjJIyMIwZLUE=
 github.com/psanford/httpreadat v0.1.0/go.mod h1:Zg7P+TlBm3bYbyHTKv/EdtSJZn3qwbPwpfZ/I9GKCRE=
-github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
-github.com/rogpeppe/go-internal v1.8.0 h1:FCbCCtXNOY3UtUuHUYaghJg4y7Fd14rXifAYUAtL9R8=
-github.com/rogpeppe/go-internal v1.8.0/go.mod h1:WmiCO8CzOY8rg0OYDC4/i/2WRWAB6poM+XZ2dLUbcbE=
+github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
+github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncjaFoBhdsK/akog=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
@ -132,8 +147,9 @@ github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
-github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
+github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/twitchyliquid64/golang-asm v0.15.1 h1:SU5vSMR7hnwNxj24w34ZyCi/FmDZTkS4MhqMhdFk5YI=
 github.com/twitchyliquid64/golang-asm v0.15.1/go.mod h1:a1lVb/DtPvCB8fslRZhAngC2+aY1QWCk3Cedj/Gdt08=
 github.com/ugorji/go/codec v1.2.12 h1:9LC83zGrHhuUA9l16C9AHXAqEV/2wBQ4nkvumAE65EE=
@ -147,29 +163,27 @@ github.com/wlynxg/anet v0.0.5/go.mod h1:eay5PRQr7fIVAMbTbchTnO9gG65Hg/uYGdc7mguH
 golang.org/x/arch v0.0.0-20210923205945-b76863e36670/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
 golang.org/x/arch v0.8.0 h1:3wRIsP3pM4yUptoR96otTUOXI367OS0+c9eeRi9doIc=
 golang.org/x/arch v0.8.0/go.mod h1:FEVrYAQjsQXMVJ1nsMoVVXPZg6p2JE2mx8psSWTDQys=
-golang.org/x/crypto v0.28.0 h1:GBDwsMXVQi34v5CCYUm2jkJvu4cbtru2U4TN2PSyQnw=
-golang.org/x/crypto v0.28.0/go.mod h1:rmgy+3RHxRZMyY0jjAJShp2zgEdOqj2AO7U0pYmeQ7U=
-golang.org/x/net v0.30.0 h1:AcW1SDZMkb8IpzCdQUaIq2sP4sZ4zw+55h6ynffypl4=
-golang.org/x/net v0.30.0/go.mod h1:2wGyMJ5iFasEhkwi13ChkO/t1ECNC4X4eBKkVFyYFlU=
-golang.org/x/oauth2 v0.21.0 h1:tsimM75w1tF/uws5rbeHzIWxEqElMehnc+iW793zsZs=
-golang.org/x/oauth2 v0.21.0/go.mod h1:XYTD2NtWslqkgxebSiOHnXEap4TF09sJSc7H1sXbhtI=
+golang.org/x/crypto v0.30.0 h1:RwoQn3GkWiMkzlX562cLB7OxWvjH1L8xutO2WoJcRoY=
+golang.org/x/crypto v0.30.0/go.mod h1:kDsLvtWBEx7MV9tJOj9bnXsPbxwJQ6csT/x4KIN4Ssk=
+golang.org/x/net v0.32.0 h1:ZqPmj8Kzc+Y6e0+skZsuACbx+wzMgo5MQsJh9Qd6aYI=
+golang.org/x/net v0.32.0/go.mod h1:CwU0IoeOlnQQWJ6ioyFrfRuomB8GKF6KbYXZVyeXNfs=
+golang.org/x/oauth2 v0.24.0 h1:KTBBxWqUa0ykRPLtV69rRto9TLXcqYkeswu48x/gvNE=
+golang.org/x/oauth2 v0.24.0/go.mod h1:XYTD2NtWslqkgxebSiOHnXEap4TF09sJSc7H1sXbhtI=
 golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.26.0 h1:KHjCJyddX0LoSTb3J+vWpupP9p0oznkqVk/IfjymZbo=
-golang.org/x/sys v0.26.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/text v0.19.0 h1:kTxAhCbGbxhK0IwgSKiMO5awPoDQ0RpfiVYBfK860YM=
-golang.org/x/text v0.19.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
-google.golang.org/protobuf v1.34.0 h1:Qo/qEd2RZPCf2nKuorzksSknv0d3ERwp1vFG38gSmH4=
-google.golang.org/protobuf v1.34.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
+golang.org/x/sys v0.28.0 h1:Fksou7UEQUWlKvIdsqzJmUmCX3cZuD2+P3XyyzwMhlA=
+golang.org/x/sys v0.28.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/text v0.21.0 h1:zyQAAkrwaneQ066sspRyJaG9VNi/YJ1NfzcGB3hZ/qo=
+golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
+google.golang.org/protobuf v1.35.2 h1:8Ar7bF+apOIoThw1EdZl0p1oWvMqTHmpA2fRTyZO8io=
+google.golang.org/protobuf v1.35.2/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
-gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
--- a/jsonrpc.go
+++ b/jsonrpc.go
@ -34,6 +34,12 @@ type JSONRPCEvent struct {
 	Params  interface{} `json:"params,omitempty"`
 }

+type BacklightSettings struct {
+	MaxBrightness int `json:"max_brightness"`
+	DimAfter      int `json:"dim_after"`
+	OffAfter      int `json:"off_after"`
+}
+
 func writeJSONRPCResponse(response JSONRPCResponse, session *Session) {
 	responseBytes, err := json.Marshal(response)
 	if err != nil {
@ -225,6 +231,56 @@ func rpcTryUpdate() error {
 	return nil
 }

+func rpcSetBacklightSettings(params BacklightSettings) error {
+	LoadConfig()
+
+	blConfig := params
+
+	// NOTE: by default, the frontend limits the brightness to 64, as that's what the device originally shipped with.
+	if blConfig.MaxBrightness > 255 || blConfig.MaxBrightness < 0 {
+		return fmt.Errorf("maxBrightness must be between 0 and 255")
+	}
+
+	if blConfig.DimAfter < 0 {
+		return fmt.Errorf("dimAfter must be a positive integer")
+	}
+
+	if blConfig.OffAfter < 0 {
+		return fmt.Errorf("offAfter must be a positive integer")
+	}
+
+	config.DisplayMaxBrightness = blConfig.MaxBrightness
+	config.DisplayDimAfterSec = blConfig.DimAfter
+	config.DisplayOffAfterSec = blConfig.OffAfter
+
+	if err := SaveConfig(); err != nil {
+		return fmt.Errorf("failed to save config: %w", err)
+	}
+
+	log.Printf("rpc: display: settings applied, max_brightness: %d, dim after: %ds, off after: %ds", config.DisplayMaxBrightness, config.DisplayDimAfterSec, config.DisplayOffAfterSec)
+
+	// If the device started up with auto-dim and/or auto-off set to zero, the display init
+	// method will not have started the tickers. So in case that has changed, attempt to start the tickers now.
+	startBacklightTickers()
+
+	// Wake the display after the settings are altered, this ensures the tickers
+	// are reset to the new settings, and will bring the display up to maxBrightness.
+	// Calling with force set to true, to ignore the current state of the display, and force
+	// it to reset the tickers.
+	wakeDisplay(true)
+	return nil
+}
+
+func rpcGetBacklightSettings() (*BacklightSettings, error) {
+	LoadConfig()
+
+	return &BacklightSettings{
+		MaxBrightness: config.DisplayMaxBrightness,
+		DimAfter:      int(config.DisplayDimAfterSec),
+		OffAfter:      int(config.DisplayOffAfterSec),
+	}, nil
+}
+
 const (
 	devModeFile = "/userdata/jetkvm/devmode.enable"
 	sshKeyDir   = "/userdata/dropbear/.ssh"
@ -385,7 +441,7 @@ func callRPCHandler(handler RPCHandler, params map[string]interface{}) (interfac
 				}
 				args[i] = reflect.ValueOf(newStruct).Elem()
 			} else {
-				return nil, fmt.Errorf("invalid parameter type for: %s", paramName)
+				return nil, fmt.Errorf("invalid parameter type for: %s, type: %s", paramName, paramType.Kind())
 			}
 		} else {
 			args[i] = convertedValue.Convert(paramType)
@ -560,4 +616,6 @@ var rpcHandlers = map[string]RPCHandler{
 	"getWakeOnLanDevices":    {Func: rpcGetWakeOnLanDevices},
 	"setWakeOnLanDevices":    {Func: rpcSetWakeOnLanDevices, Params: []string{"params"}},
 	"resetConfig":            {Func: rpcResetConfig},
+	"setBacklightSettings":   {Func: rpcSetBacklightSettings, Params: []string{"params"}},
+	"getBacklightSettings":   {Func: rpcGetBacklightSettings},
 }
--- a/network.go
+++ b/network.go
@ -1,13 +1,19 @@
 package kvm

 import (
+	"bytes"
 	"fmt"
+	"net"
+	"os"
+	"strings"
+	"time"
+
+	"os/exec"
+
+	"github.com/hashicorp/go-envparse"
 	"github.com/pion/mdns/v2"
 	"golang.org/x/net/ipv4"
 	"golang.org/x/net/ipv6"
-	"net"
-	"os/exec"
-	"time"

 	"github.com/vishvananda/netlink"
 	"github.com/vishvananda/netlink/nl"
@ -15,11 +21,15 @@ import (

 var mDNSConn *mdns.Conn

-var networkState struct {
+var networkState NetworkState
+
+type NetworkState struct {
 	Up   bool
 	IPv4 string
 	IPv6 string
 	MAC  string
+
+	checked bool
 }

 type LocalIpInfo struct {
@ -28,43 +38,45 @@ type LocalIpInfo struct {
 	MAC  string
 }

+const (
+	NetIfName     = "eth0"
+	DHCPLeaseFile = "/run/udhcpc.%s.info"
+)
+
 // setDhcpClientState sends signals to udhcpc to change it's current mode
 // of operation. Setting active to true will force udhcpc to renew the DHCP lease.
 // Setting active to false will put udhcpc into idle mode.
 func setDhcpClientState(active bool) {
-	var signal string;
+	var signal string
 	if active {
 		signal = "-SIGUSR1"
 	} else {
 		signal = "-SIGUSR2"
 	}

-	cmd := exec.Command("/usr/bin/killall", signal, "udhcpc");
+	cmd := exec.Command("/usr/bin/killall", signal, "udhcpc")
 	if err := cmd.Run(); err != nil {
 		fmt.Printf("network: setDhcpClientState: failed to change udhcpc state: %s\n", err)
 	}
 }

 func checkNetworkState() {
-	iface, err := netlink.LinkByName("eth0")
+	iface, err := netlink.LinkByName(NetIfName)
 	if err != nil {
-		fmt.Printf("failed to get eth0 interface: %v\n", err)
+		fmt.Printf("failed to get [%s] interface: %v\n", NetIfName, err)
 		return
 	}

-	newState := struct {
-		Up   bool
-		IPv4 string
-		IPv6 string
-		MAC  string
-	}{
+	newState := NetworkState{
 		Up:  iface.Attrs().OperState == netlink.OperUp,
 		MAC: iface.Attrs().HardwareAddr.String(),
+
+		checked: true,
 	}

 	addrs, err := netlink.AddrList(iface, nl.FAMILY_ALL)
 	if err != nil {
-		fmt.Printf("failed to get addresses for eth0: %v\n", err)
+		fmt.Printf("failed to get addresses for [%s]: %v\n", NetIfName, err)
 	}

 	// If the link is going down, put udhcpc into idle mode.
@ -94,7 +106,7 @@ func checkNetworkState() {

 	if newState != networkState {
 		fmt.Println("network state changed")
-		//restart MDNS
+		// restart MDNS
 		startMDNS()
 		networkState = newState
 		requestDisplayUpdate()
@ -102,7 +114,7 @@ func checkNetworkState() {
 }

 func startMDNS() error {
-	//If server was previously running, stop it
+	// If server was previously running, stop it
 	if mDNSConn != nil {
 		fmt.Printf("Stopping mDNS server\n")
 		err := mDNSConn.Close()
@ -111,7 +123,7 @@ func startMDNS() error {
 		}
 	}

-	//Start a new server
+	// Start a new server
 	fmt.Printf("Starting mDNS server on jetkvm.local\n")
 	addr4, err := net.ResolveUDPAddr("udp4", mdns.DefaultAddressIPv4)
 	if err != nil {
@ -144,6 +156,39 @@ func startMDNS() error {
 	return nil
 }

+func getNTPServersFromDHCPInfo() ([]string, error) {
+	buf, err := os.ReadFile(fmt.Sprintf(DHCPLeaseFile, NetIfName))
+	if err != nil {
+		// do not return error if file does not exist
+		if os.IsNotExist(err) {
+			return nil, nil
+		}
+		return nil, fmt.Errorf("failed to load udhcpc info: %w", err)
+	}
+
+	// parse udhcpc info
+	env, err := envparse.Parse(bytes.NewReader(buf))
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse udhcpc info: %w", err)
+	}
+
+	val, ok := env["ntpsrv"]
+	if !ok {
+		return nil, nil
+	}
+
+	var servers []string
+
+	for _, server := range strings.Fields(val) {
+		if net.ParseIP(server) == nil {
+			fmt.Printf("invalid NTP server IP: %s, ignoring ... \n", server)
+		}
+		servers = append(servers, server)
+	}
+
+	return servers, nil
+}
+
 func init() {
 	updates := make(chan netlink.LinkUpdate)
 	done := make(chan struct{})
@ -162,7 +207,7 @@ func init() {
 		for {
 			select {
 			case update := <-updates:
-				if update.Link.Attrs().Name == "eth0" {
+				if update.Link.Attrs().Name == NetIfName {
 					fmt.Printf("link update: %+v\n", update)
 					checkNetworkState()
 				}
--- a/ntp.go
+++ b/ntp.go
@ -11,20 +11,56 @@ import (
 	"github.com/beevik/ntp"
 )

-var timeSynced = false
+const (
+	timeSyncRetryStep     = 5 * time.Second
+	timeSyncRetryMaxInt   = 1 * time.Minute
+	timeSyncWaitNetChkInt = 100 * time.Millisecond
+	timeSyncWaitNetUpInt  = 3 * time.Second
+	timeSyncInterval      = 1 * time.Hour
+	timeSyncTimeout       = 2 * time.Second
+)
+
+var (
+	timeSynced            = false
+	timeSyncRetryInterval = 0 * time.Second
+	defaultNTPServers     = []string{
+		"time.cloudflare.com",
+		"time.apple.com",
+	}
+)

 func TimeSyncLoop() {
 	for {
-		fmt.Println("Syncing system time")
+		if !networkState.checked {
+			time.Sleep(timeSyncWaitNetChkInt)
+			continue
+		}
+
+		if !networkState.Up {
+			log.Printf("Waiting for network to come up")
+			time.Sleep(timeSyncWaitNetUpInt)
+			continue
+		}
+
+		log.Printf("Syncing system time")
 		start := time.Now()
 		err := SyncSystemTime()
 		if err != nil {
 			log.Printf("Failed to sync system time: %v", err)
+
+			// retry after a delay
+			timeSyncRetryInterval += timeSyncRetryStep
+			time.Sleep(timeSyncRetryInterval)
+			// reset the retry interval if it exceeds the max interval
+			if timeSyncRetryInterval > timeSyncRetryMaxInt {
+				timeSyncRetryInterval = 0
+			}
+
 			continue
 		}
 		log.Printf("Time sync successful, now is: %v, time taken: %v", time.Now(), time.Since(start))
 		timeSynced = true
-		time.Sleep(1 * time.Hour) //once the first sync is done, sync every hour
+		time.Sleep(timeSyncInterval) // after the first sync is done
 	}
 }

@ -41,13 +77,22 @@ func SyncSystemTime() (err error) {
 }

 func queryNetworkTime() (*time.Time, error) {
-	ntpServers := []string{
-		"time.cloudflare.com",
-		"time.apple.com",
+	ntpServers, err := getNTPServersFromDHCPInfo()
+	if err != nil {
+		log.Printf("failed to get NTP servers from DHCP info: %v\n", err)
 	}
+
+	if ntpServers == nil {
+		ntpServers = defaultNTPServers
+		log.Printf("Using default NTP servers: %v\n", ntpServers)
+	} else {
+		log.Printf("Using NTP servers from DHCP: %v\n", ntpServers)
+	}
+
 	for _, server := range ntpServers {
-		now, err := queryNtpServer(server, 2*time.Second)
+		now, err := queryNtpServer(server, timeSyncTimeout)
 		if err == nil {
+			log.Printf("NTP server [%s] returned time: %v\n", server, now)
 			return now, nil
 		}
 	}
@ -56,7 +101,7 @@ func queryNetworkTime() (*time.Time, error) {
 		"http://cloudflare.com",
 	}
 	for _, url := range httpUrls {
-		now, err := queryHttpTime(url, 2*time.Second)
+		now, err := queryHttpTime(url, timeSyncTimeout)
 		if err == nil {
 			return now, nil
 		}
--- a/ui/.env.development
+++ b/ui/.env.development
@ -2,3 +2,5 @@ VITE_SIGNAL_API=http://localhost:3000

 VITE_CLOUD_APP=http://localhost:5173
 VITE_CLOUD_API=http://localhost:3000
+
+VITE_JETKVM_HEAD=
--- a/ui/.env.device
+++ b/ui/.env.device
@ -2,3 +2,5 @@ VITE_SIGNAL_API= # Uses the KVM device's IP address as the signal API endpoint

 VITE_CLOUD_APP=https://app.jetkvm.com
 VITE_CLOUD_API=https://api.jetkvm.com
+
+VITE_JETKVM_HEAD=<script src="/device/ui-config.js"></script>
--- a/ui/.env.production
+++ b/ui/.env.production
@ -2,3 +2,5 @@ VITE_SIGNAL_API=https://api.jetkvm.com

 VITE_CLOUD_APP=https://app.jetkvm.com
 VITE_CLOUD_API=https://api.jetkvm.com
+
+VITE_JETKVM_HEAD=
--- a/ui/dev_device.sh
+++ b/ui/dev_device.sh
@ -0,0 +1,21 @@
+#!/bin/bash
+
+# Print header
+echo "┌──────────────────────────────────────┐"
+echo "│     JetKVM Development Setup         │"
+echo "└──────────────────────────────────────┘"
+
+# Prompt for IP address
+printf "Please enter the IP address of your JetKVM device: "
+read ip_address
+
+# Validate input is not empty
+if [ -z "$ip_address" ]; then
+    echo "Error: IP address cannot be empty"
+    exit 1
+fi
+
+# Set the environment variable and run Vite
+echo "Starting development server with JetKVM device at: $ip_address"
+sleep 1
+JETKVM_PROXY_URL="http://$ip_address" vite dev --mode=device
--- a/ui/index.html
+++ b/ui/index.html
@ -28,6 +28,7 @@
    <title>JetKVM</title>
    <link rel="stylesheet" href="/fonts/fonts.css" />
    <link rel="icon" href="/favicon.png" />
+    %VITE_JETKVM_HEAD%
    <script>
      // Initial theme setup
      document.documentElement.classList.toggle(
--- a/ui/package.json
+++ b/ui/package.json
@ -7,10 +7,10 @@
    "node": "21.1.0"
  },
  "scripts": {
-    "dev": "vite dev --mode=development",
+    "dev": "./dev_device.sh",
+    "dev:cloud": "vite dev --mode=development",
    "build": "npm run build:prod",
    "build:device": "tsc && vite build --mode=device --emptyOutDir",
-    "dev:device": "vite dev --mode=device",
    "build:prod": "tsc && vite build --mode=production",
    "lint": "eslint . --ext ts,tsx --report-unused-disable-directives --max-warnings 0"
  },
--- a/ui/src/components/AuthLayout.tsx
+++ b/ui/src/components/AuthLayout.tsx
@ -6,6 +6,7 @@ import { useLocation, useNavigation, useSearchParams } from "react-router-dom";
 import Fieldset from "@components/Fieldset";
 import GridBackground from "@components/GridBackground";
 import StepCounter from "@components/StepCounter";
+import { CLOUD_API } from "@/ui.config";

 type AuthLayoutProps = {
  title: string;
@ -62,7 +63,7 @@ export default function AuthLayout({
              <Fieldset className="space-y-12">
                <div className="max-w-sm mx-auto space-y-4">
                  <form
-                    action={`${import.meta.env.VITE_CLOUD_API}/oidc/google`}
+                    action={`${CLOUD_API}/oidc/google`}
                    method="POST"
                  >
                    {/*This could be the KVM ID*/}
--- a/ui/src/components/Header.tsx
+++ b/ui/src/components/Header.tsx
@ -14,6 +14,7 @@ import PeerConnectionStatusCard from "@components/PeerConnectionStatusCard";
 import api from "../api";
 import { isOnDevice } from "../main";
 import { Button, LinkButton } from "./Button";
+import { CLOUD_API, SIGNAL_API } from "@/ui.config";

 interface NavbarProps {
  isLoggedIn: boolean;
@ -37,8 +38,8 @@ export default function DashboardNavbar({
  const navigate = useNavigate();
  const onLogout = useCallback(async () => {
    const logoutUrl = isOnDevice
-      ? `${import.meta.env.VITE_SIGNAL_API}/auth/logout`
-      : `${import.meta.env.VITE_CLOUD_API}/logout`;
+      ? `${SIGNAL_API}/auth/logout`
+      : `${CLOUD_API}/logout`;
    const res = await api.POST(logoutUrl);
    if (!res.ok) return;

--- a/ui/src/components/MountMediaDialog.tsx
+++ b/ui/src/components/MountMediaDialog.tsx
@ -35,6 +35,7 @@ import { ExclamationTriangleIcon } from "@heroicons/react/20/solid";
 import notifications from "../notifications";
 import Fieldset from "./Fieldset";
 import { isOnDevice } from "../main";
+import { SIGNAL_API } from "@/ui.config";

 export default function MountMediaModal({
  open,
@ -1119,7 +1120,7 @@ function UploadFileView({
    alreadyUploadedBytes: number,
    dataChannel: string,
  ) {
-    const uploadUrl = `${import.meta.env.VITE_SIGNAL_API}/storage/upload?uploadId=${dataChannel}`;
+    const uploadUrl = `${SIGNAL_API}/storage/upload?uploadId=${dataChannel}`;

    const xhr = new XMLHttpRequest();
    xhr.open("POST", uploadUrl, true);
--- a/ui/src/components/sidebar/settings.tsx
+++ b/ui/src/components/sidebar/settings.tsx
@ -1,5 +1,6 @@
 import SidebarHeader from "@components/SidebarHeader";
 import {
+  BacklightSettings,
  useLocalAuthModalStore,
  useSettingsStore,
  useUiStore,
@ -25,6 +26,7 @@ import LocalAuthPasswordDialog from "@/components/LocalAuthPasswordDialog";
 import { LocalDevice } from "@routes/devices.$id";
 import { useRevalidator } from "react-router-dom";
 import { ShieldCheckIcon } from "@heroicons/react/20/solid";
+import { CLOUD_APP, SIGNAL_API } from "@/ui.config";

 export function SettingsItem({
  title,
@ -95,6 +97,7 @@ export default function SettingsSidebar() {
  const hideCursor = useSettingsStore(state => state.isCursorHidden);
  const setHideCursor = useSettingsStore(state => state.setCursorVisibility);
  const setDeveloperMode = useSettingsStore(state => state.setDeveloperMode);
+  const setBacklightSettings = useSettingsStore(state => state.setBacklightSettings);

  const [currentVersions, setCurrentVersions] = useState<{
    appVersion: string;
@ -228,6 +231,28 @@ export default function SettingsSidebar() {
    [send, setDeveloperMode],
  );

+  const handleBacklightSettingsChange = (settings: BacklightSettings) => {
+    // If the user has set the display to dim after it turns off, set the dim_after
+    // value to never.
+    if (settings.dim_after > settings.off_after && settings.off_after != 0) {
+      settings.dim_after = 0;
+    }
+
+    setBacklightSettings(settings);
+  }
+
+  const handleBacklightSettingsSave = () => {
+    send("setBacklightSettings", { params: settings.backlightSettings }, resp => {
+      if ("error" in resp) {
+        notifications.error(
+          `Failed to set backlight settings: ${resp.error.data || "Unknown error"}`,
+        );
+        return;
+      }
+      notifications.success("Backlight settings updated successfully");
+    });
+  };
+
  const handleUpdateSSHKey = useCallback(() => {
    send("setSSHKeyState", { sshKey }, resp => {
      if ("error" in resp) {
@ -302,6 +327,17 @@ export default function SettingsSidebar() {
      }
    });

+    send("getBacklightSettings", {}, resp => {
+      if ("error" in resp) {
+        notifications.error(
+          `Failed to get backlight settings: ${resp.error.data || "Unknown error"}`,
+        );
+        return;
+      }
+      const result = resp.result as BacklightSettings;
+      setBacklightSettings(result);
+    })
+
    send("getDevModeState", {}, resp => {
      if ("error" in resp) return;
      const result = resp.result as { enabled: boolean };
@ -331,7 +367,7 @@ export default function SettingsSidebar() {
  const getDevice = useCallback(async () => {
    try {
      const status = await api
-        .GET(`${import.meta.env.VITE_SIGNAL_API}/device`)
+        .GET(`${SIGNAL_API}/device`)
        .then(res => res.json() as Promise<LocalDevice>);
      setLocalDevice(status);
    } catch (error) {
@ -642,7 +678,7 @@ export default function SettingsSidebar() {
                <div>
                  <LinkButton
                    to={
-                      import.meta.env.VITE_CLOUD_APP +
+                      CLOUD_APP +
                      "/signup?deviceId=" +
                      deviceId +
                      `&returnTo=${location.href}adopt`
@ -797,6 +833,80 @@ export default function SettingsSidebar() {
          />
        </SettingsItem>
        <div className="h-[1px] w-full bg-slate-800/10 dark:bg-slate-300/20" />
+        <div className="pb-2 space-y-4">
+          <SectionHeader
+            title="Hardware"
+            description="Configure the JetKVM Hardware"
+          />
+        </div>
+        <SettingsItem title="Display Brightness" description="Set the brightness of the display">
+          <SelectMenuBasic
+            size="SM"
+            label=""
+            value={settings.backlightSettings.max_brightness.toString()}
+            options={[
+              { value: "0", label: "Off" },
+              { value: "10", label: "Low" },
+              { value: "35", label: "Medium" },
+              { value: "64", label: "High" },
+            ]}
+            onChange={e => {
+              settings.backlightSettings.max_brightness = parseInt(e.target.value)
+              handleBacklightSettingsChange(settings.backlightSettings);
+            }}
+          />
+        </SettingsItem>
+        {settings.backlightSettings.max_brightness != 0 && (
+          <>
+          <SettingsItem title="Dim Display After" description="Set how long to wait before dimming the display">
+            <SelectMenuBasic
+              size="SM"
+              label=""
+              value={settings.backlightSettings.dim_after.toString()}
+              options={[
+                { value: "0", label: "Never" },
+                { value: "60", label: "1 Minute" },
+                { value: "300", label: "5 Minutes" },
+                { value: "600", label: "10 Minutes" },
+                { value: "1800", label: "30 Minutes" },
+                { value: "3600", label: "1 Hour" },
+              ]}
+              onChange={e => {
+                settings.backlightSettings.dim_after = parseInt(e.target.value)
+                handleBacklightSettingsChange(settings.backlightSettings);
+              }}
+            />
+          </SettingsItem>
+          <SettingsItem title="Turn off Display After" description="Set how long to wait before turning off the display">
+            <SelectMenuBasic
+              size="SM"
+              label=""
+              value={settings.backlightSettings.off_after.toString()}
+              options={[
+                { value: "0", label: "Never" },
+                { value: "300", label: "5 Minutes" },
+                { value: "600", label: "10 Minutes" },
+                { value: "1800", label: "30 Minutes" },
+                { value: "3600", label: "1 Hour" },
+              ]}
+              onChange={e => {
+                settings.backlightSettings.off_after = parseInt(e.target.value)
+                handleBacklightSettingsChange(settings.backlightSettings);
+              }}
+            />
+          </SettingsItem>
+          </>
+        )}
+        <p className="text-xs text-slate-600 dark:text-slate-400">
+          The display will wake up when the connection state changes, or when touched.
+        </p>
+        <Button
+          size="SM"
+          theme="primary"
+          text="Save Display Settings"
+          onClick={handleBacklightSettingsSave}
+        />
+        <div className="h-[1px] w-full bg-slate-800/10 dark:bg-slate-300/20" />
        <div className="pb-2 space-y-4">
          <SectionHeader
            title="Advanced"
--- a/ui/src/hooks/stores.ts
+++ b/ui/src/hooks/stores.ts
@ -229,6 +229,12 @@ export interface VideoState {
  }) => void;
 }

+export interface BacklightSettings {
+  max_brightness: number;
+  dim_after: number;
+  off_after: number;
+}
+
 export const useVideoStore = create<VideoState>(set => ({
  width: 0,
  height: 0,
@ -270,6 +276,9 @@ interface SettingsState {
  // Add new developer mode state
  developerMode: boolean;
  setDeveloperMode: (enabled: boolean) => void;
+
+  backlightSettings: BacklightSettings;
+  setBacklightSettings: (settings: BacklightSettings) => void;
 }

 export const useSettingsStore = create(
@ -287,6 +296,13 @@ export const useSettingsStore = create(
      // Add developer mode with default value
      developerMode: false,
      setDeveloperMode: enabled => set({ developerMode: enabled }),
+
+      backlightSettings: {
+        max_brightness: 100,
+        dim_after: 10000,
+        off_after: 50000,
+      },
+      setBacklightSettings: (settings: BacklightSettings) => set({ backlightSettings: settings }),
    }),
    {
      name: "settings",
--- a/ui/src/main.tsx
+++ b/ui/src/main.tsx
@ -27,12 +27,13 @@ import LoginLocalRoute from "./routes/login-local";
 import WelcomeLocalModeRoute from "./routes/welcome-local.mode";
 import WelcomeRoute from "./routes/welcome-local";
 import WelcomeLocalPasswordRoute from "./routes/welcome-local.password";
+import { CLOUD_API } from "./ui.config";

 export const isOnDevice = import.meta.env.MODE === "device";
 export const isInCloud = !isOnDevice;

 export async function checkAuth() {
-  const res = await fetch(`${import.meta.env.VITE_CLOUD_API}/me`, {
+  const res = await fetch(`${CLOUD_API}/me`, {
    mode: "cors",
    credentials: "include",
    headers: { "Content-Type": "application/json" },
--- a/ui/src/routes/adopt.tsx
+++ b/ui/src/routes/adopt.tsx
@ -1,5 +1,6 @@
 import { LoaderFunctionArgs, redirect } from "react-router-dom";
 import api from "../api";
+import { CLOUD_API, CLOUD_APP, SIGNAL_API } from "@/ui.config";

 const loader = async ({ request }: LoaderFunctionArgs) => {
  const url = new URL(request.url);
@ -11,17 +12,17 @@ const loader = async ({ request }: LoaderFunctionArgs) => {
  const clientId = searchParams.get("clientId");

  const res = await api.POST(
-    `${import.meta.env.VITE_SIGNAL_API}/cloud/register`,
+    `${SIGNAL_API}/cloud/register`,
    {
      token: tempToken,
-      cloudApi: import.meta.env.VITE_CLOUD_API,
+      cloudApi: CLOUD_API,
      oidcGoogle,
      clientId,
    },
  );

  if (!res.ok) throw new Error("Failed to register device");
-  return redirect(import.meta.env.VITE_CLOUD_APP + `/devices/${deviceId}/setup`);
+  return redirect(CLOUD_APP + `/devices/${deviceId}/setup`);
 };

 export default function AdoptRoute() {
--- a/ui/src/routes/devices.$id.deregister.tsx
+++ b/ui/src/routes/devices.$id.deregister.tsx
@ -14,6 +14,7 @@ import { User } from "@/hooks/stores";
 import { checkAuth } from "@/main";
 import Fieldset from "@components/Fieldset";
 import { ChevronLeftIcon } from "@heroicons/react/16/solid";
+import { CLOUD_API } from "@/ui.config";

 interface LoaderData {
  device: { id: string; name: string; user: { googleId: string } };
@ -24,7 +25,7 @@ const action = async ({ request }: ActionFunctionArgs) => {
  const { deviceId } = Object.fromEntries(await request.formData());

  try {
-    const res = await fetch(`${import.meta.env.VITE_CLOUD_API}/devices/${deviceId}`, {
+    const res = await fetch(`${CLOUD_API}/devices/${deviceId}`, {
      method: "DELETE",
      credentials: "include",
      headers: { "Content-Type": "application/json" },
@ -46,7 +47,7 @@ const loader = async ({ params }: LoaderFunctionArgs) => {
  const { id } = params;

  try {
-    const res = await fetch(`${import.meta.env.VITE_CLOUD_API}/devices/${id}`, {
+    const res = await fetch(`${CLOUD_API}/devices/${id}`, {
      method: "GET",
      credentials: "include",
      mode: "cors",
--- a/ui/src/routes/devices.$id.rename.tsx
+++ b/ui/src/routes/devices.$id.rename.tsx
@ -16,6 +16,7 @@ import { User } from "@/hooks/stores";
 import { checkAuth } from "@/main";
 import Fieldset from "@components/Fieldset";
 import api from "../api";
+import { CLOUD_API } from "@/ui.config";

 interface LoaderData {
  device: { id: string; name: string; user: { googleId: string } };
@ -31,7 +32,7 @@ const action = async ({ params, request }: ActionFunctionArgs) => {
  }

  try {
-    const res = await api.PUT(`${import.meta.env.VITE_CLOUD_API}/devices/${id}`, {
+    const res = await api.PUT(`${CLOUD_API}/devices/${id}`, {
      name,
    });
    if (!res.ok) {
@ -49,7 +50,7 @@ const loader = async ({ params }: LoaderFunctionArgs) => {
  const { id } = params;

  try {
-    const res = await fetch(`${import.meta.env.VITE_CLOUD_API}/devices/${id}`, {
+    const res = await fetch(`${CLOUD_API}/devices/${id}`, {
      method: "GET",
      credentials: "include",
      mode: "cors",
--- a/ui/src/routes/devices.$id.setup.tsx
+++ b/ui/src/routes/devices.$id.setup.tsx
@ -16,10 +16,11 @@ import { InputFieldWithLabel } from "@components/InputField";
 import { Button } from "@components/Button";
 import { checkAuth } from "@/main";
 import api from "../api";
+import { CLOUD_API } from "@/ui.config";

 const loader = async ({ params }: LoaderFunctionArgs) => {
  await checkAuth();
-  const res = await fetch(`${import.meta.env.VITE_CLOUD_API}/devices/${params.id}`, {
+  const res = await fetch(`${CLOUD_API}/devices/${params.id}`, {
    method: "GET",
    mode: "cors",
    credentials: "include",
@ -35,7 +36,7 @@ const loader = async ({ params }: LoaderFunctionArgs) => {
 const action = async ({ request }: ActionFunctionArgs) => {
  // Handle form submission
  const { name, id, returnTo } = Object.fromEntries(await request.formData());
-  const res = await api.PUT(`${import.meta.env.VITE_CLOUD_API}/devices/${id}`, { name });
+  const res = await api.PUT(`${CLOUD_API}/devices/${id}`, { name });

  if (res.ok) {
    return redirect(returnTo?.toString() ?? `/devices/${id}`);
--- a/ui/src/routes/devices.$id.tsx
+++ b/ui/src/routes/devices.$id.tsx
@ -36,6 +36,7 @@ import { DeviceStatus } from "./welcome-local";
 import FocusTrap from "focus-trap-react";
 import OtherSessionConnectedModal from "@/components/OtherSessionConnectedModal";
 import TerminalWrapper from "../components/Terminal";
+import { CLOUD_API, SIGNAL_API } from "@/ui.config";

 interface LocalLoaderResp {
  authMode: "password" | "noPassword" | null;
@ -56,12 +57,12 @@ export interface LocalDevice {

 const deviceLoader = async () => {
  const res = await api
-    .GET(`${import.meta.env.VITE_SIGNAL_API}/device/status`)
+    .GET(`${SIGNAL_API}/device/status`)
    .then(res => res.json() as Promise<DeviceStatus>);

  if (!res.isSetup) return redirect("/welcome");

-  const deviceRes = await api.GET(`${import.meta.env.VITE_SIGNAL_API}/device`);
+  const deviceRes = await api.GET(`${SIGNAL_API}/device`);
  if (deviceRes.status === 401) return redirect("/login-local");
  if (deviceRes.ok) {
    const device = (await deviceRes.json()) as LocalDevice;
@ -74,11 +75,11 @@ const deviceLoader = async () => {
 const cloudLoader = async (params: Params<string>): Promise<CloudLoaderResp> => {
  const user = await checkAuth();

-  const iceResp = await api.POST(`${import.meta.env.VITE_CLOUD_API}/webrtc/ice_config`);
+  const iceResp = await api.POST(`${CLOUD_API}/webrtc/ice_config`);
  const iceConfig = await iceResp.json();

  const deviceResp = await api.GET(
-    `${import.meta.env.VITE_CLOUD_API}/devices/${params.id}`,
+    `${CLOUD_API}/devices/${params.id}`,
  );

  if (!deviceResp.ok) {
@ -142,7 +143,7 @@ export default function KvmIdRoute() {

      try {
        const sd = btoa(JSON.stringify(pc.localDescription));
-        const res = await api.POST(`${import.meta.env.VITE_SIGNAL_API}/webrtc/session`, {
+        const res = await api.POST(`${SIGNAL_API}/webrtc/session`, {
          sd,
          // When on device, we don't need to specify the device id, as it's already known
          ...(isOnDevice ? {} : { id: params.id }),
@ -317,7 +318,7 @@ export default function KvmIdRoute() {
    }

    // Fire and forget
-    api.POST(`${import.meta.env.VITE_CLOUD_API}/webrtc/turn_activity`, {
+    api.POST(`${CLOUD_API}/webrtc/turn_activity`, {
      bytesReceived: bytesReceivedDelta,
      bytesSent: bytesSentDelta,
    });
--- a/ui/src/routes/devices.tsx
+++ b/ui/src/routes/devices.tsx
@ -9,6 +9,7 @@ import { User } from "@/hooks/stores";
 import EmptyCard from "@components/EmptyCard";
 import { LuMonitorSmartphone } from "react-icons/lu";
 import { ArrowRightIcon } from "@heroicons/react/16/solid";
+import { CLOUD_API } from "@/ui.config";

 interface LoaderData {
  devices: { id: string; name: string; online: boolean; lastSeen: string }[];
@ -19,7 +20,7 @@ export const loader = async () => {
  const user = await checkAuth();

  try {
-    const res = await fetch(`${import.meta.env.VITE_CLOUD_API}/devices`, {
+    const res = await fetch(`${CLOUD_API}/devices`, {
      method: "GET",
      credentials: "include",
      mode: "cors",
--- a/ui/src/routes/login-local.tsx
+++ b/ui/src/routes/login-local.tsx
@ -12,15 +12,16 @@ import LogoWhiteIcon from "@/assets/logo-white.svg";
 import api from "../api";
 import { DeviceStatus } from "./welcome-local";
 import ExtLink from "../components/ExtLink";
+import { SIGNAL_API } from "@/ui.config";

 const loader = async () => {
  const res = await api
-    .GET(`${import.meta.env.VITE_SIGNAL_API}/device/status`)
+    .GET(`${SIGNAL_API}/device/status`)
    .then(res => res.json() as Promise<DeviceStatus>);

  if (!res.isSetup) return redirect("/welcome");

-  const deviceRes = await api.GET(`${import.meta.env.VITE_SIGNAL_API}/device`);
+  const deviceRes = await api.GET(`${SIGNAL_API}/device`);
  if (deviceRes.ok) return redirect("/");
  return null;
 };
@ -31,7 +32,7 @@ const action = async ({ request }: ActionFunctionArgs) => {

  try {
    const response = await api.POST(
-      `${import.meta.env.VITE_SIGNAL_API}/auth/login-local`,
+      `${SIGNAL_API}/auth/login-local`,
      {
        password,
      },
--- a/ui/src/routes/welcome-local.mode.tsx
+++ b/ui/src/routes/welcome-local.mode.tsx
@ -9,10 +9,11 @@ import LogoWhiteIcon from "@/assets/logo-white.svg";
 import { cx } from "../cva.config";
 import api from "../api";
 import { DeviceStatus } from "./welcome-local";
+import { SIGNAL_API } from "@/ui.config";

 const loader = async () => {
  const res = await api
-    .GET(`${import.meta.env.VITE_SIGNAL_API}/device/status`)
+    .GET(`${SIGNAL_API}/device/status`)
    .then(res => res.json() as Promise<DeviceStatus>);

  if (res.isSetup) return redirect("/login-local");
@ -30,7 +31,7 @@ const action = async ({ request }: ActionFunctionArgs) => {

  if (localAuthMode === "noPassword") {
    try {
-      await api.POST(`${import.meta.env.VITE_SIGNAL_API}/device/setup`, {
+      await api.POST(`${SIGNAL_API}/device/setup`, {
        localAuthMode,
      });
      return redirect("/");
--- a/ui/src/routes/welcome-local.password.tsx
+++ b/ui/src/routes/welcome-local.password.tsx
@ -10,10 +10,11 @@ import LogoBlueIcon from "@/assets/logo-blue.png";
 import LogoWhiteIcon from "@/assets/logo-white.svg";
 import api from "../api";
 import { DeviceStatus } from "./welcome-local";
+import { SIGNAL_API } from "@/ui.config";

 const loader = async () => {
  const res = await api
-    .GET(`${import.meta.env.VITE_SIGNAL_API}/device/status`)
+    .GET(`${SIGNAL_API}/device/status`)
    .then(res => res.json() as Promise<DeviceStatus>);

  if (res.isSetup) return redirect("/login-local");
@ -30,7 +31,7 @@ const action = async ({ request }: ActionFunctionArgs) => {
  }

  try {
-    const response = await api.POST(`${import.meta.env.VITE_SIGNAL_API}/device/setup`, {
+    const response = await api.POST(`${SIGNAL_API}/device/setup`, {
      localAuthMode: "password",
      password,
    });
--- a/ui/src/routes/welcome-local.tsx
+++ b/ui/src/routes/welcome-local.tsx
@ -9,6 +9,7 @@ import LogoMark from "@/assets/logo-mark.png";
 import { cx } from "cva";
 import api from "../api";
 import { redirect } from "react-router-dom";
+import { SIGNAL_API } from "@/ui.config";

 export interface DeviceStatus {
  isSetup: boolean;
@ -16,7 +17,7 @@ export interface DeviceStatus {

 const loader = async () => {
  const res = await api
-    .GET(`${import.meta.env.VITE_SIGNAL_API}/device/status`)
+    .GET(`${SIGNAL_API}/device/status`)
    .then(res => res.json() as Promise<DeviceStatus>);

  if (res.isSetup) return redirect("/login-local");
--- a/ui/src/ui.config.ts
+++ b/ui/src/ui.config.ts
@ -0,0 +1,23 @@
+interface JetKVMConfig {
+  CLOUD_API?: string;
+  CLOUD_APP?: string;
+  DEVICE_VERSION?: string;
+}
+
+declare global {
+  interface Window { JETKVM_CONFIG?: JetKVMConfig; }
+}
+
+const getAppURL = (api_url?: string) => {
+  if (!api_url) {
+    return;
+  }
+  const url = new URL(api_url);
+  url.host = url.host.replace(/api\./, "app.");
+  // remove the ending slash
+  return url.toString().replace(/\/$/, "");
+}
+
+export const CLOUD_API = window.JETKVM_CONFIG?.CLOUD_API || import.meta.env.VITE_CLOUD_API;
+export const CLOUD_APP = window.JETKVM_CONFIG?.CLOUD_APP || getAppURL(CLOUD_API) || import.meta.env.VITE_CLOUD_APP;
+export const SIGNAL_API = import.meta.env.VITE_SIGNAL_API;
--- a/web.go
+++ b/web.go
@ -2,6 +2,8 @@ package kvm

 import (
 	"embed"
+	"encoding/json"
+	"fmt"
 	"io/fs"
 	"net/http"
 	"path/filepath"
@ -10,6 +12,10 @@ import (

 	"github.com/gin-gonic/gin"
 	"github.com/google/uuid"
+	"github.com/prometheus/client_golang/prometheus"
+	versioncollector "github.com/prometheus/client_golang/prometheus/collectors/version"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+	"github.com/prometheus/common/version"
 	"golang.org/x/crypto/bcrypt"
 )

@ -77,9 +83,17 @@ func setupRouter() *gin.Engine {
 	// We use this to determine if the device is setup
 	r.GET("/device/status", handleDeviceStatus)

+	// We use this to provide the UI with the device configuration
+	r.GET("/device/ui-config.js", handleDeviceUIConfig)
+
 	// We use this to setup the device in the welcome page
 	r.POST("/device/setup", handleSetup)

+	// A Prometheus metrics endpoint.
+	version.Version = builtAppVersion
+	prometheus.MustRegister(versioncollector.NewCollector("jetkvm"))
+	r.GET("/metrics", gin.WrapH(promhttp.Handler()))
+
 	// Protected routes (allows both password and noPassword modes)
 	protected := r.Group("/")
 	protected.Use(protectedMiddleware())
@ -361,6 +375,23 @@ func handleDeviceStatus(c *gin.Context) {
 	c.JSON(http.StatusOK, response)
 }

+func handleDeviceUIConfig(c *gin.Context) {
+	LoadConfig()
+
+	config, _ := json.Marshal(gin.H{
+		"CLOUD_API":      config.CloudURL,
+		"DEVICE_VERSION": builtAppVersion,
+	})
+	if config == nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to marshal config"})
+		return
+	}
+
+	response := fmt.Sprintf("window.JETKVM_CONFIG = %s;", config)
+
+	c.Data(http.StatusOK, "text/javascript; charset=utf-8", []byte(response))
+}
+
 func handleSetup(c *gin.Context) {
 	LoadConfig()
Author	SHA1	Message	Date
Ben Kochie	c30fda5fa4	Merge `9b3a3d0977` into `1973a65635`	2025-02-17 16:37:37 +01:00
Adam Shiervani	1973a65635	feat(dev): change default npm dev script to device mode and add wrapper script to set environment variable and proxy signal api (#157 )	2025-02-17 16:29:42 +01:00
Aveline	f3b4dbce49	feat: use the api url from device config (#161 )	2025-02-17 11:34:38 +01:00
Aveline	806792203f	feat(ntp): add delay between sync attempts and support NTP servers from DHCP (#162 ) * feat(ntp): use ntp server from dhcp info * feat(ntp): use ntp server from dhcp info * feat(ntp): add delay between time sync attempts * chore(ntp): more logging	2025-02-17 11:02:28 +01:00
Cameron Fleming	5217377175	feat(display.go): Add display brightness settings (#17 ) * feat(display.go): impl setDisplayBrightness() Implements setDisplayBrightness(brightness int) which allows setting the backlight brightness on JetKVM's hardware. Needs to be implemented into the RPC, config and frontend. * feat(config): add backlight control settings * feat(display): add automatic dimming & switch off to display WIP, dims the display to 50% of the BacklightMaxBrightness after BacklightDimAfterMS expires. Turns the display off after BacklightOffAfterMS * feat(rpc): add methods to get and set BacklightSettings * WIP: feat(settings): add Max backlight setting * chore: use constant for backlight control file * fix: only attempt to wake the display if it's off * feat(display): wake on touch * fix: re-use buffer between reads * fix: wakeDisplay() on start to fix warm start issue If the application had turned off the display before exiting, it wouldn't be brought on when the application restarted without a device reboot. * chore: various comment & string updates * fix: newline on set brightness log Noticed by @eric https://github.com/jetkvm/kvm/pull/17#discussion_r1903338705 * fix: set default value for display Set the DisplayMaxBrightness to the default brightness used out-of-the-box by JetKVM. Also sets the dim/timeout to 2 minutes and 30 mintes respectively. * feat(display.go): use tickers to countdown to dim/off As suggested by tutman in https://github.com/jetkvm/kvm/pull/17, use tickers set to the duration of dim/off to avoid a loop running every second. The tickers are reset to the dim/off times whenever wakeDisplay() is called. * chore: update config Changed Dim & Off values to seconds instead of milliseconds, there's no need for it to be that precise. * feat(display.go): wakeDisplay() force Adds the force boolean to wakedisplay() which allows skipping the backlightState == 0 check, this means you can force a ticker reset, even if the display is currently in the "full bright" state * feat(display.go): move tickers into their own method This allows them to only be started if necessary. If the user has chosen to keep the display on and not-dimmed all the time, the tickers can't start as their tick value must be a positive integer. * feat(display.go): stop tickers when auto-dim/auto-off is disabled * feat(rpc): implement display backlight control methods * feat(ui): implement display backlight control * chore: update variable names As part of @joshuasing's review on #17, updated variables & constants to match the Go best practices. Signed-off-by: Cameron Fleming <cameron@nevexo.space> * fix(display): move backlightTicker setup into screen setup goroutine Signed-off-by: Cameron Fleming <cameron@nevexo.space> * chore: fix some start-up timing issues * fix(display): Don't attempt to start the tickers if the display is disabled If max_brightness is zero, then there's no point in trying to dim it (or turn it off...) * fix: wakeDisplay() doesn't need to stop the tickers The tickers only need to be reset, if they're disabled, they won't have been started. * fix: Don't wake up the display if it's turned off --------- Signed-off-by: Cameron Fleming <cameron@nevexo.space>	2025-02-17 11:00:28 +01:00
SuperQ	9b3a3d0977	Feature: Add a metrics endpoint Add a basic Prometheus Monitoring metrics endpoint. * Include a `jetkvm_build_info` metric. * `go mod tidy` Signed-off-by: SuperQ <superq@gmail.com>	2025-01-03 11:41:57 +01:00