github.com/keybase/client/go@v0.0.0-20240309051027-028f7c731f8b/kbfs/libdokan/dokan_info.go (about)

     1  // Copyright 2018 Keybase Inc. All rights reserved.
     2  // Use of this source code is governed by a BSD
     3  // license that can be found in the LICENSE file.
     4  
     5  package libdokan
     6  
     7  import (
     8  	"bytes"
     9  	"context"
    10  	"crypto/sha256"
    11  	"fmt"
    12  	"io"
    13  	"os"
    14  	"os/exec"
    15  
    16  	"github.com/keybase/client/go/logger"
    17  )
    18  
    19  const shortPath = `DOKAN1.DLL`
    20  const syswow64 = `C:\WINDOWS\SYSWOW64\`
    21  const system32 = `C:\WINDOWS\SYSTEM32\`
    22  
    23  type errorPrinter struct {
    24  	buf bytes.Buffer
    25  }
    26  
    27  func (ep *errorPrinter) Printf(s string, os ...interface{}) {
    28  	fmt.Fprintf(&ep.buf, s, os...)
    29  }
    30  
    31  func debugFileInfo(epc *errorPrinter, path string) {
    32  	f, err := os.Open(path)
    33  	epc.Printf("debugFileInfo: open(%q) -> %v, %+v\n", path, f, err)
    34  	if err != nil {
    35  		return
    36  	}
    37  	defer f.Close()
    38  	fi, err := f.Stat()
    39  	epc.Printf("debugFileInfo: stat(%q) -> %v, %+v\n", path, fi, err)
    40  	if fi != nil {
    41  		epc.Printf("debugFileInfo: modtime is %v\n", fi.ModTime())
    42  	}
    43  	h := sha256.New()
    44  	n, err := io.Copy(h, f)
    45  	epc.Printf("debugFileInfo: read bytes -> %d, %+v\n", n, err)
    46  	if err != nil {
    47  		return
    48  	}
    49  	epc.Printf("debugFileInfo: sha256 %X\n", h.Sum(nil))
    50  }
    51  
    52  func logDokanFilesInfo(epc *errorPrinter) {
    53  	cwd := ``
    54  	if d, err := os.Getwd(); err == nil {
    55  		cwd = d + `\`
    56  	}
    57  	for _, d := range []string{syswow64, system32, cwd} {
    58  		debugFileInfo(epc, d+shortPath)
    59  	}
    60  	for _, d := range []string{syswow64, system32} {
    61  		debugFileInfo(epc, d+`DRIVERS\DOKAN.SYS`)
    62  		debugFileInfo(epc, d+`DRIVERS\DOKAN1.SYS`)
    63  		debugFileInfo(epc, d+`DRIVERS\DOKAN2.SYS`)
    64  	}
    65  }
    66  
    67  func logDokanServiceInfo(epc *errorPrinter) {
    68  	epc.Printf("Running 'sc query dokan1'")
    69  	bs, err := exec.Command("sc", "query", "dokan1").CombinedOutput()
    70  	if err != nil {
    71  		epc.Printf("exec.Command error: %+v\n", err)
    72  		return
    73  	}
    74  	epc.Printf("%s\n", bs)
    75  }
    76  
    77  func logDokanInfo(ctx context.Context, log logger.Logger) {
    78  	var epc errorPrinter
    79  	logDokanFilesInfo(&epc)
    80  	logDokanServiceInfo(&epc)
    81  	log.CDebugf(ctx, "Dokan info:\n%s", epc.buf.Bytes())
    82  }