update to go 1.25.7 (fixes GO-2026-4337)

Co-authored-by: henrygd <hank@henrygd.me>

agent/agent.go

@@ -5,11 +5,8 @@
 package agent
 
 import (
-	"crypto/sha256"
-	"encoding/hex"
 	"log/slog"
 	"os"
-	"path/filepath"
 	"strings"
 	"sync"
 	"time"
@@ -19,7 +16,6 @@ import (
 	"github.com/henrygd/beszel/agent/deltatracker"
 	"github.com/henrygd/beszel/internal/common"
 	"github.com/henrygd/beszel/internal/entities/system"
-	"github.com/shirou/gopsutil/v4/host"
 	gossh "golang.org/x/crypto/ssh"
 )
 
@@ -65,7 +61,7 @@ func NewAgent(dataDir ...string) (agent *Agent, err error) {
 	agent.netIoStats = make(map[uint16]system.NetIoStats)
 	agent.netInterfaceDeltaTrackers = make(map[uint16]*deltatracker.DeltaTracker[string, uint64])
 
-	agent.dataDir, err = getDataDir(dataDir...)
+	agent.dataDir, err = GetDataDir(dataDir...)
 	if err != nil {
 		slog.Warn("Data directory not found")
 	} else {
@@ -228,38 +224,12 @@ func (a *Agent) gatherStats(options common.DataRequestOptions) *system.CombinedD
 	return data
 }
 
-// StartAgent initializes and starts the agent with optional WebSocket connection
+// Start initializes and starts the agent with optional WebSocket connection
 func (a *Agent) Start(serverOptions ServerOptions) error {
 	a.keys = serverOptions.Keys
 	return a.connectionManager.Start(serverOptions)
 }
 
 func (a *Agent) getFingerprint() string {
-	// first look for a fingerprint in the data directory
+	return GetFingerprint(a.dataDir, a.systemDetails.Hostname, a.systemDetails.CpuModel)
-	if a.dataDir != "" {
-		if fp, err := os.ReadFile(filepath.Join(a.dataDir, "fingerprint")); err == nil {
-			return string(fp)
-		}
-	}
-
-	// if no fingerprint is found, generate one
-	fingerprint, err := host.HostID()
-	// we ignore a commonly known "product_uuid" known not to be unique
-	if err != nil || fingerprint == "" || fingerprint == "03000200-0400-0500-0006-000700080009" {
-		fingerprint = a.systemDetails.Hostname + a.systemDetails.CpuModel
-	}
-
-	// hash fingerprint
-	sum := sha256.Sum256([]byte(fingerprint))
-	fingerprint = hex.EncodeToString(sum[:24])
-
-	// save fingerprint to data directory
-	if a.dataDir != "" {
-		err = os.WriteFile(filepath.Join(a.dataDir, "fingerprint"), []byte(fingerprint), 0644)
-		if err != nil {
-			slog.Warn("Failed to save fingerprint", "err", err)
-		}
-	}
-
-	return fingerprint
 }

agent/data_dir.go

@@ -8,10 +8,10 @@ import (
 	"runtime"
 )
 
-// getDataDir returns the path to the data directory for the agent and an error
+// GetDataDir returns the path to the data directory for the agent and an error
 // if the directory is not valid. Attempts to find the optimal data directory if
 // no data directories are provided.
-func getDataDir(dataDirs ...string) (string, error) {
+func GetDataDir(dataDirs ...string) (string, error) {
 	if len(dataDirs) > 0 {
 		return testDataDirs(dataDirs)
 	}

agent/data_dir_test.go

@@ -17,7 +17,7 @@ func TestGetDataDir(t *testing.T) {
 	// Test with explicit dataDir parameter
 	t.Run("explicit data dir", func(t *testing.T) {
 		tempDir := t.TempDir()
-		result, err := getDataDir(tempDir)
+		result, err := GetDataDir(tempDir)
 		require.NoError(t, err)
 		assert.Equal(t, tempDir, result)
 	})
@@ -26,7 +26,7 @@ func TestGetDataDir(t *testing.T) {
 	t.Run("explicit data dir - create new", func(t *testing.T) {
 		tempDir := t.TempDir()
 		newDir := filepath.Join(tempDir, "new-data-dir")
-		result, err := getDataDir(newDir)
+		result, err := GetDataDir(newDir)
 		require.NoError(t, err)
 		assert.Equal(t, newDir, result)
 
@@ -52,7 +52,7 @@ func TestGetDataDir(t *testing.T) {
 
 		os.Setenv("BESZEL_AGENT_DATA_DIR", tempDir)
 
-		result, err := getDataDir()
+		result, err := GetDataDir()
 		require.NoError(t, err)
 		assert.Equal(t, tempDir, result)
 	})
@@ -60,7 +60,7 @@ func TestGetDataDir(t *testing.T) {
 	// Test with invalid explicit dataDir
 	t.Run("invalid explicit data dir", func(t *testing.T) {
 		invalidPath := "/invalid/path/that/cannot/be/created"
-		_, err := getDataDir(invalidPath)
+		_, err := GetDataDir(invalidPath)
 		assert.Error(t, err)
 	})
 
@@ -79,7 +79,7 @@ func TestGetDataDir(t *testing.T) {
 
 		// This will try platform-specific defaults, which may or may not work
 		// We're mainly testing that it doesn't panic and returns some result
-		result, err := getDataDir()
+		result, err := GetDataDir()
 		// We don't assert success/failure here since it depends on system permissions
 		// Just verify we get a string result if no error
 		if err == nil {

agent/fingerprint.go

@@ -0,0 +1,87 @@
+package agent
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"errors"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/shirou/gopsutil/v4/cpu"
+	"github.com/shirou/gopsutil/v4/host"
+)
+
+const fingerprintFileName = "fingerprint"
+
+// knownBadUUID is a commonly known "product_uuid" that is not unique across systems.
+const knownBadUUID = "03000200-0400-0500-0006-000700080009"
+
+// GetFingerprint returns the agent fingerprint. It first tries to read a saved
+// fingerprint from the data directory. If not found (or dataDir is empty), it
+// generates one from system properties. The hostname and cpuModel parameters are
+// used as fallback material if host.HostID() fails. If either is empty, they
+// are fetched from the system automatically.
+//
+// If a new fingerprint is generated and a dataDir is provided, it is saved.
+func GetFingerprint(dataDir, hostname, cpuModel string) string {
+	if dataDir != "" {
+		if fp, err := readFingerprint(dataDir); err == nil {
+			return fp
+		}
+	}
+	fp := generateFingerprint(hostname, cpuModel)
+	if dataDir != "" {
+		_ = SaveFingerprint(dataDir, fp)
+	}
+	return fp
+}
+
+// generateFingerprint creates a fingerprint from system properties.
+// It tries host.HostID() first, falling back to hostname + cpuModel.
+// If hostname or cpuModel are empty, they are fetched from the system.
+func generateFingerprint(hostname, cpuModel string) string {
+	fingerprint, err := host.HostID()
+	if err != nil || fingerprint == "" || fingerprint == knownBadUUID {
+		if hostname == "" {
+			hostname, _ = os.Hostname()
+		}
+		if cpuModel == "" {
+			if info, err := cpu.Info(); err == nil && len(info) > 0 {
+				cpuModel = info[0].ModelName
+			}
+		}
+		fingerprint = hostname + cpuModel
+	}
+
+	sum := sha256.Sum256([]byte(fingerprint))
+	return hex.EncodeToString(sum[:24])
+}
+
+// readFingerprint reads the saved fingerprint from the data directory.
+func readFingerprint(dataDir string) (string, error) {
+	fp, err := os.ReadFile(filepath.Join(dataDir, fingerprintFileName))
+	if err != nil {
+		return "", err
+	}
+	s := strings.TrimSpace(string(fp))
+	if s == "" {
+		return "", errors.New("fingerprint file is empty")
+	}
+	return s, nil
+}
+
+// SaveFingerprint writes the fingerprint to the data directory.
+func SaveFingerprint(dataDir, fingerprint string) error {
+	return os.WriteFile(filepath.Join(dataDir, fingerprintFileName), []byte(fingerprint), 0o644)
+}
+
+// DeleteFingerprint removes the saved fingerprint file from the data directory.
+// Returns nil if the file does not exist (idempotent).
+func DeleteFingerprint(dataDir string) error {
+	err := os.Remove(filepath.Join(dataDir, fingerprintFileName))
+	if errors.Is(err, os.ErrNotExist) {
+		return nil
+	}
+	return err
+}

agent/fingerprint_test.go

@@ -0,0 +1,103 @@
+//go:build testing
+// +build testing
+
+package agent
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestGetFingerprint(t *testing.T) {
+	t.Run("reads existing fingerprint from file", func(t *testing.T) {
+		dir := t.TempDir()
+		expected := "abc123def456"
+		err := os.WriteFile(filepath.Join(dir, fingerprintFileName), []byte(expected), 0644)
+		require.NoError(t, err)
+
+		fp := GetFingerprint(dir, "", "")
+		assert.Equal(t, expected, fp)
+	})
+
+	t.Run("trims whitespace from file", func(t *testing.T) {
+		dir := t.TempDir()
+		err := os.WriteFile(filepath.Join(dir, fingerprintFileName), []byte("  abc123  \n"), 0644)
+		require.NoError(t, err)
+
+		fp := GetFingerprint(dir, "", "")
+		assert.Equal(t, "abc123", fp)
+	})
+
+	t.Run("generates fingerprint when file does not exist", func(t *testing.T) {
+		dir := t.TempDir()
+		fp := GetFingerprint(dir, "", "")
+		assert.NotEmpty(t, fp)
+	})
+
+	t.Run("generates fingerprint when dataDir is empty", func(t *testing.T) {
+		fp := GetFingerprint("", "", "")
+		assert.NotEmpty(t, fp)
+	})
+
+	t.Run("generates consistent fingerprint for same inputs", func(t *testing.T) {
+		fp1 := GetFingerprint("", "myhost", "mycpu")
+		fp2 := GetFingerprint("", "myhost", "mycpu")
+		assert.Equal(t, fp1, fp2)
+	})
+
+	t.Run("prefers saved fingerprint over generated", func(t *testing.T) {
+		dir := t.TempDir()
+		require.NoError(t, SaveFingerprint(dir, "saved-fp"))
+
+		fp := GetFingerprint(dir, "anyhost", "anycpu")
+		assert.Equal(t, "saved-fp", fp)
+	})
+}
+
+func TestSaveFingerprint(t *testing.T) {
+	t.Run("saves fingerprint to file", func(t *testing.T) {
+		dir := t.TempDir()
+		err := SaveFingerprint(dir, "abc123")
+		require.NoError(t, err)
+
+		content, err := os.ReadFile(filepath.Join(dir, fingerprintFileName))
+		require.NoError(t, err)
+		assert.Equal(t, "abc123", string(content))
+	})
+
+	t.Run("overwrites existing fingerprint", func(t *testing.T) {
+		dir := t.TempDir()
+		require.NoError(t, SaveFingerprint(dir, "old"))
+		require.NoError(t, SaveFingerprint(dir, "new"))
+
+		content, err := os.ReadFile(filepath.Join(dir, fingerprintFileName))
+		require.NoError(t, err)
+		assert.Equal(t, "new", string(content))
+	})
+}
+
+func TestDeleteFingerprint(t *testing.T) {
+	t.Run("deletes existing fingerprint", func(t *testing.T) {
+		dir := t.TempDir()
+		fp := filepath.Join(dir, fingerprintFileName)
+		err := os.WriteFile(fp, []byte("abc123"), 0644)
+		require.NoError(t, err)
+
+		err = DeleteFingerprint(dir)
+		require.NoError(t, err)
+
+		// Verify file is gone
+		_, err = os.Stat(fp)
+		assert.True(t, os.IsNotExist(err))
+	})
+
+	t.Run("no error when file does not exist", func(t *testing.T) {
+		dir := t.TempDir()
+		err := DeleteFingerprint(dir)
+		assert.NoError(t, err)
+	})
+}

agent/server.go

@@ -36,6 +36,9 @@ var hubVersions map[string]semver.Version
 // and begins listening for connections. Returns an error if the server
 // is already running or if there's an issue starting the server.
 func (a *Agent) StartServer(opts ServerOptions) error {
+	if disableSSH, _ := GetEnv("DISABLE_SSH"); disableSSH == "true" {
+		return errors.New("SSH disabled")
+	}
 	if a.server != nil {
 		return errors.New("server already started")
 	}

agent/server_test.go

@@ -1,3 +1,6 @@
+//go:build testing
+// +build testing
+
 package agent
 
 import (
@@ -180,6 +183,23 @@ func TestStartServer(t *testing.T) {
 	}
 }
 
+func TestStartServerDisableSSH(t *testing.T) {
+	os.Setenv("BESZEL_AGENT_DISABLE_SSH", "true")
+	defer os.Unsetenv("BESZEL_AGENT_DISABLE_SSH")
+
+	agent, err := NewAgent("")
+	require.NoError(t, err)
+
+	opts := ServerOptions{
+		Network: "tcp",
+		Addr:    ":45990",
+	}
+
+	err = agent.StartServer(opts)
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "SSH disabled")
+}
+
 /////////////////////////////////////////////////////////////////
 //////////////////// ParseKeys Tests ////////////////////////////
 /////////////////////////////////////////////////////////////////

agent/update.go

@@ -79,7 +79,7 @@ func detectRestarter() restarter {
 func Update(useMirror bool) error {
 	exePath, _ := os.Executable()
 
-	dataDir, err := getDataDir()
+	dataDir, err := GetDataDir()
 	if err != nil {
 		dataDir = os.TempDir()
 	}
@@ -125,4 +125,3 @@ func Update(useMirror bool) error {
 
 	return nil
 }
-

go.mod

@@ -1,6 +1,6 @@
 module github.com/henrygd/beszel
 
-go 1.25.5
+go 1.25.7
 
 require (
 	github.com/blang/semver v3.5.1+incompatible

internal/cmd/agent/agent.go

@@ -31,9 +31,6 @@ func (opts *cmdOptions) parse() bool {
 
 	// Subcommands that don't require any pflag parsing
 	switch subcommand {
-	case "-v", "version":
-		fmt.Println(beszel.AppName+"-agent", beszel.Version)
-		return true
 	case "health":
 		err := health.Check()
 		if err != nil {
@@ -41,6 +38,9 @@ func (opts *cmdOptions) parse() bool {
 		}
 		fmt.Print("ok")
 		return true
+	case "fingerprint":
+		handleFingerprint()
+		return true
 	}
 
 	// pflag.CommandLine.ParseErrorsWhitelist.UnknownFlags = true
@@ -49,6 +49,7 @@ func (opts *cmdOptions) parse() bool {
 	pflag.StringVarP(&opts.hubURL, "url", "u", "", "URL of the Beszel hub")
 	pflag.StringVarP(&opts.token, "token", "t", "", "Token to use for authentication")
 	chinaMirrors := pflag.BoolP("china-mirrors", "c", false, "Use mirror for update (gh.beszel.dev) instead of GitHub")
+	version := pflag.BoolP("version", "v", false, "Show version information")
 	help := pflag.BoolP("help", "h", false, "Show this help message")
 
 	// Convert old single-dash long flags to double-dash for backward compatibility
@@ -73,8 +74,8 @@ func (opts *cmdOptions) parse() bool {
 		builder.WriteString(os.Args[0])
 		builder.WriteString(" [command] [flags]\n")
 		builder.WriteString("\nCommands:\n")
+		builder.WriteString("  fingerprint  View or reset the agent fingerprint\n")
 		builder.WriteString("  health       Check if the agent is running\n")
-		// builder.WriteString("  help      Display this help message\n")
 		builder.WriteString("  update       Update to the latest version\n")
 		builder.WriteString("\nFlags:\n")
 		fmt.Print(builder.String())
@@ -86,6 +87,9 @@ func (opts *cmdOptions) parse() bool {
 
 	// Must run after pflag.Parse()
 	switch {
+	case *version:
+		fmt.Println(beszel.AppName+"-agent", beszel.Version)
+		return true
 	case *help || subcommand == "help":
 		pflag.Usage()
 		return true
@@ -133,6 +137,38 @@ func (opts *cmdOptions) getAddress() string {
 	return agent.GetAddress(opts.listen)
 }
 
+// handleFingerprint handles the "fingerprint" command with subcommands "view" and "reset".
+func handleFingerprint() {
+	subCmd := ""
+	if len(os.Args) > 2 {
+		subCmd = os.Args[2]
+	}
+
+	switch subCmd {
+	case "", "view":
+		dataDir, _ := agent.GetDataDir()
+		fp := agent.GetFingerprint(dataDir, "", "")
+		fmt.Println(fp)
+	case "help", "-h", "--help":
+		fmt.Print(fingerprintUsage())
+	case "reset":
+		dataDir, err := agent.GetDataDir()
+		if err != nil {
+			log.Fatal(err)
+		}
+		if err := agent.DeleteFingerprint(dataDir); err != nil {
+			log.Fatal(err)
+		}
+		fmt.Println("Fingerprint reset. A new one will be generated on next start.")
+	default:
+		log.Fatalf("Unknown command: %q\n\n%s", subCmd, fingerprintUsage())
+	}
+}
+
+func fingerprintUsage() string {
+	return fmt.Sprintf("Usage: %s fingerprint [view|reset]\n\nCommands:\n  view   Print fingerprint (default)\n  reset  Reset saved fingerprint\n", os.Args[0])
+}
+
 func main() {
 	var opts cmdOptions
 	subcommandHandled := opts.parse()

internal/site/src/components/systems-table/systems-table-columns.tsx

@@ -8,6 +8,7 @@ import type { ClassValue } from "clsx"
 import {
 	ArrowUpDownIcon,
 	ChevronRightSquareIcon,
+	ClockArrowUp,
 	CopyIcon,
 	CpuIcon,
 	HardDriveIcon,
@@ -34,6 +35,7 @@ import {
 	formatTemperature,
 	getMeterState,
 	parseSemVer,
+	secondsToString,
 } from "@/lib/utils"
 import { batteryStateTranslations } from "@/lib/i18n"
 import type { SystemRecord } from "@/types"
@@ -373,6 +375,29 @@ export function SystemsTableColumns(viewMode: "table" | "grid"): ColumnDef<Syste
 				)
 			},
 		},
+		{
+			accessorFn: ({ info }) => info.u || undefined,
+			id: "uptime",
+			name: () => t`Uptime`,
+			size: 50,
+			Icon: ClockArrowUp,
+			header: sortableHeader,
+			cell(info) {
+				const uptime = info.getValue() as number
+				if (!uptime) {
+					return null
+				}
+				let formatted: string
+				if (uptime < 3600) {
+					formatted = secondsToString(uptime, "minute")
+				} else if (uptime < 360000) {
+					formatted = secondsToString(uptime, "hour")
+				} else {
+					formatted = secondsToString(uptime, "day")
+				}
+				return <span className="tabular-nums whitespace-nowrap">{formatted}</span>
+			},
+		},
 		{
 			accessorFn: ({ info }) => info.v,
 			id: "agent",

supplemental/scripts/install-agent.ps1

@@ -7,13 +7,15 @@ param (
     [int]$Port = 45876,
     [string]$AgentPath = "",
     [string]$NSSMPath = "",
-    [switch]$ConfigureFirewall
+    [switch]$ConfigureFirewall,
+    [ValidateSet("Auto", "Scoop", "WinGet")]
+    [string]$InstallMethod = "Auto"
 )
 
 # Check if required parameters are provided
 if ([string]::IsNullOrWhiteSpace($Key)) {
     Write-Host "ERROR: SSH Key is required." -ForegroundColor Red
-    Write-Host "Usage: .\install-agent.ps1 -Key 'your-ssh-key-here' [-Token 'your-token-here'] [-Url 'your-hub-url-here'] [-Port port-number] [-ConfigureFirewall]" -ForegroundColor Yellow
+    Write-Host "Usage: .\install-agent.ps1 -Key 'your-ssh-key-here' [-Token 'your-token-here'] [-Url 'your-hub-url-here'] [-Port port-number] [-InstallMethod Auto|Scoop|WinGet] [-ConfigureFirewall]" -ForegroundColor Yellow
     Write-Host "Note: Token and Url are optional for backwards compatibility with older hub versions." -ForegroundColor Yellow
     exit 1
 }
@@ -487,6 +489,21 @@ try {
             exit 1
         }
 
+        if ($InstallMethod -eq "Scoop") {
+            if (-not (Test-CommandExists "scoop")) {
+                throw "InstallMethod is set to Scoop, but Scoop is not available in PATH."
+            }
+            Write-Host "Using Scoop for installation..."
+            $AgentPath = Install-WithScoop -Key $Key -Port $Port
+        }
+        elseif ($InstallMethod -eq "WinGet") {
+            if (-not (Test-CommandExists "winget")) {
+                throw "InstallMethod is set to WinGet, but WinGet is not available in PATH."
+            }
+            Write-Host "Using WinGet for installation..."
+            $AgentPath = Install-WithWinGet -Key $Key -Port $Port
+        }
+        else {
             if (Test-CommandExists "scoop") {
                 Write-Host "Using Scoop for installation..."
                 $AgentPath = Install-WithScoop -Key $Key -Port $Port
@@ -500,6 +517,7 @@ try {
                 $AgentPath = Install-WithScoop -Key $Key -Port $Port
             }
         }
+    }
 
     if (-not $AgentPath) {
         throw "Could not find beszel-agent executable. Make sure it was properly installed."
@@ -561,7 +579,8 @@ try {
             "-Token", "`"$Token`"",
             "-Url", "`"$Url`"",
             "-Port", $Port,
-            "-AgentPath", "`"$AgentPath`""
+            "-AgentPath", "`"$AgentPath`"",
+            "-InstallMethod", $InstallMethod
         )
         
         # Add NSSMPath if we found it