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Code Issues Packages Projects Releases 2 Wiki Activity

embed smartctl in the windows binary (#1362)

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henrygd
2025-11-05 13:03:47 -05:00
parent 02d594cc82
commit 1af7ff600f
7 changed files with 540 additions and 3 deletions
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1
.goreleaser.yml
View File

@@ -5,6 +5,7 @@ project_name: beszel
before:
hooks:
- go mod tidy
- go generate -run fetchsmartctl ./agent
builds:
- id: beszel

10
Makefile
View File

@@ -7,7 +7,7 @@ SKIP_WEB ?= false
# Set executable extension based on target OS
EXE_EXT := $(if $(filter windows,$(OS)),.exe,)
.PHONY: tidy build-agent build-hub build-hub-dev build clean lint dev-server dev-agent dev-hub dev generate-locales
.PHONY: tidy build-agent build-hub build-hub-dev build clean lint dev-server dev-agent dev-hub dev generate-locales fetch-smartctl-conditional
.DEFAULT_GOAL := build
clean:
@@ -46,8 +46,14 @@ build-dotnet-conditional:
fi; \
fi
# Download smartctl.exe at build time for Windows (skips if already present)
fetch-smartctl-conditional:
@if [ "$(OS)" = "windows" ]; then \
go generate -run fetchsmartctl ./agent; \
fi
# Update build-agent to include conditional .NET build
build-agent: tidy build-dotnet-conditional
build-agent: tidy build-dotnet-conditional fetch-smartctl-conditional
GOOS=$(OS) GOARCH=$(ARCH) go build -o ./build/beszel-agent_$(OS)_$(ARCH)$(EXE_EXT) -ldflags "-w -s" ./internal/cmd/agent
build-hub: tidy $(if $(filter false,$(SKIP_WEB)),build-web-ui)

14
agent/smart.go
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@@ -1,3 +1,6 @@
//go:generate -command fetchsmartctl go run ./tools/fetchsmartctl
//go:generate fetchsmartctl -out ./smartmontools/smartctl.exe -url https://static.beszel.dev/bin/smartctl/smartctl-nc.exe -sha 3912249c3b329249aa512ce796fd1b64d7cbd8378b68ad2756b39163d9c30b47
package agent
import (
@@ -879,11 +882,20 @@ func (sm *SmartManager) parseSmartForNvme(output []byte) (bool, int) {
// detectSmartctl checks if smartctl is installed, returns an error if not
func (sm *SmartManager) detectSmartctl() (string, error) {
isWindows := runtime.GOOS == "windows"
// Load embedded smartctl.exe for Windows amd64 builds.
if isWindows && runtime.GOARCH == "amd64" {
if path, err := ensureEmbeddedSmartctl(); err == nil {
return path, nil
}
}
if path, err := exec.LookPath("smartctl"); err == nil {
return path, nil
}
locations := []string{}
if runtime.GOOS == "windows" {
if isWindows {
locations = append(locations,
"C:\\Program Files\\smartmontools\\bin\\smartctl.exe",
)

9
agent/smart_nonwindows.go Normal file
View File

@@ -0,0 +1,9 @@
//go:build !windows
package agent
import "errors"
func ensureEmbeddedSmartctl() (string, error) {
return "", errors.ErrUnsupported
}

40
agent/smart_windows.go Normal file
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@@ -0,0 +1,40 @@
//go:build windows
package agent
import (
_ "embed"
"fmt"
"os"
"path/filepath"
"sync"
)
//go:embed smartmontools/smartctl.exe
var embeddedSmartctl []byte
var (
smartctlOnce sync.Once
smartctlPath string
smartctlErr error
)
func ensureEmbeddedSmartctl() (string, error) {
smartctlOnce.Do(func() {
destDir := filepath.Join(os.TempDir(), "beszel", "smartmontools")
if err := os.MkdirAll(destDir, 0o755); err != nil {
smartctlErr = fmt.Errorf("failed to create smartctl directory: %w", err)
return
}
destPath := filepath.Join(destDir, "smartctl.exe")
if err := os.WriteFile(destPath, embeddedSmartctl, 0o755); err != nil {
smartctlErr = fmt.Errorf("failed to write embedded smartctl: %w", err)
return
}
smartctlPath = destPath
})
return smartctlPath, smartctlErr
}

130
agent/tools/fetchsmartctl/main.go Normal file
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@@ -0,0 +1,130 @@
package main
import (
"crypto/sha1"
"crypto/sha256"
"encoding/hex"
"flag"
"fmt"
"hash"
"io"
"net/http"
"os"
"path/filepath"
"strings"
"time"
)
// Download smartctl.exe from the given URL and save it to the given destination.
// This is used to embed smartctl.exe in the Windows build.
func main() {
url := flag.String("url", "", "URL to download smartctl.exe from (required)")
out := flag.String("out", "", "Destination path for smartctl.exe (required)")
sha := flag.String("sha", "", "Optional SHA1/SHA256 checksum for integrity validation")
force := flag.Bool("force", false, "Force re-download even if destination exists")
flag.Parse()
if *url == "" || *out == "" {
fatalf("-url and -out are required")
}
if !*force {
if info, err := os.Stat(*out); err == nil && info.Size() > 0 {
fmt.Println("smartctl.exe already present, skipping download")
return
}
}
if err := downloadFile(*url, *out, *sha); err != nil {
fatalf("download failed: %v", err)
}
}
func downloadFile(url, dest, shaHex string) error {
// Prepare destination
if err := os.MkdirAll(filepath.Dir(dest), 0o755); err != nil {
return fmt.Errorf("create dir: %w", err)
}
// HTTP client
client := &http.Client{Timeout: 60 * time.Second}
req, err := http.NewRequest(http.MethodGet, url, nil)
if err != nil {
return fmt.Errorf("new request: %w", err)
}
req.Header.Set("User-Agent", "beszel-fetchsmartctl/1.0")
resp, err := client.Do(req)
if err != nil {
return fmt.Errorf("http get: %w", err)
}
defer resp.Body.Close()
if resp.StatusCode < 200 || resp.StatusCode >= 300 {
return fmt.Errorf("unexpected HTTP status: %s", resp.Status)
}
tmp := dest + ".tmp"
f, err := os.OpenFile(tmp, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0o644)
if err != nil {
return fmt.Errorf("open tmp: %w", err)
}
// Determine hash algorithm based on length (SHA1=40, SHA256=64)
var hasher hash.Hash
if shaHex := strings.TrimSpace(shaHex); shaHex != "" {
cleanSha := strings.ToLower(strings.ReplaceAll(shaHex, " ", ""))
switch len(cleanSha) {
case 40:
hasher = sha1.New()
case 64:
hasher = sha256.New()
default:
f.Close()
os.Remove(tmp)
return fmt.Errorf("unsupported hash length: %d (expected 40 for SHA1 or 64 for SHA256)", len(cleanSha))
}
}
var mw io.Writer = f
if hasher != nil {
mw = io.MultiWriter(f, hasher)
}
if _, err := io.Copy(mw, resp.Body); err != nil {
f.Close()
os.Remove(tmp)
return fmt.Errorf("write tmp: %w", err)
}
if err := f.Close(); err != nil {
os.Remove(tmp)
return fmt.Errorf("close tmp: %w", err)
}
if hasher != nil && shaHex != "" {
cleanSha := strings.ToLower(strings.ReplaceAll(strings.TrimSpace(shaHex), " ", ""))
got := strings.ToLower(hex.EncodeToString(hasher.Sum(nil)))
if got != cleanSha {
os.Remove(tmp)
return fmt.Errorf("hash mismatch: got %s want %s", got, cleanSha)
}
}
// Make executable and move into place
if err := os.Chmod(tmp, 0o755); err != nil {
os.Remove(tmp)
return fmt.Errorf("chmod: %w", err)
}
if err := os.Rename(tmp, dest); err != nil {
os.Remove(tmp)
return fmt.Errorf("rename: %w", err)
}
fmt.Println("smartctl.exe downloaded to", dest)
return nil
}
func fatalf(format string, a ...any) {
fmt.Fprintf(os.Stderr, format+"\n", a...)
os.Exit(1)
}

339
supplemental/licenses/smartmontools/LICENSE Normal file
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@@ -0,0 +1,339 @@
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.
For example, if you distribute copies of such a program, whether
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you have. You must make sure that they, too, receive or can get the
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rights.
We protect your rights with two steps: (1) copyright the software, and
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Finally, any free program is threatened constantly by software
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The precise terms and conditions for copying, distribution and
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GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License. The "Program", below,
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that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in
the term "modification".) Each licensee is addressed as "you".
Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope. The act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.
1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
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You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.
2. You may modify your copy or copies of the Program or any portion
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a) You must cause the modified files to carry prominent notices
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c) If the modified program normally reads commands interactively
when run, you must cause it, when started running for such
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announcement including an appropriate copyright notice and a
notice that there is no warranty (or else, saying that you provide
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the Program is not required to print an announcement.)
These requirements apply to the modified work as a whole. If
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In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
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3. You may copy and distribute the Program (or a work based on it,
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
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the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
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This program is distributed in the hope that it will be useful,
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GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
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mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.