func fetchList(client *winrm.Client, remotePath string) ([]FileItem, error) {
script := fmt.Sprintf("Get-ChildItem %s", remotePath)
stdout, stderr, _, err := client.RunWithString("powershell -Command \""+script+" | ConvertTo-Xml -NoTypeInformation -As String\"", "")
if err != nil {
return nil, errors.New(fmt.Sprintf("Couldn't execute script %s: %v", script, err))
}
if stderr != "" {
if os.Getenv("WINRMCP_DEBUG") != "" {
log.Printf("STDERR returned: %s\n", stderr)
}
}
if stdout != "" {
doc := pslist{}
err := xml.Unmarshal([]byte(stdout), &doc)
if err != nil {
return nil, errors.New(fmt.Sprintf("Couldn't parse results: %v", err))
}
return convertFileItems(doc.Objects), nil
}
return []FileItem{}, nil
}
func restoreContent(client *winrm.Client, fromPath, toPath string) error {
shell, err := client.CreateShell()
if err != nil {
return err
}
defer shell.Close()
script := fmt.Sprintf(`
$tmp_file_path = [System.IO.Path]::GetFullPath("%s")
$dest_file_path = [System.IO.Path]::GetFullPath("%s")
if (Test-Path $dest_file_path) {
rm $dest_file_path
}
else {
$dest_dir = ([System.IO.Path]::GetDirectoryName($dest_file_path))
New-Item -ItemType directory -Force -ErrorAction SilentlyContinue -Path $dest_dir | Out-Null
}
if (Test-Path $tmp_file_path) {
$base64_lines = Get-Content $tmp_file_path
$base64_string = [string]::join("",$base64_lines)
$bytes = [System.Convert]::FromBase64String($base64_string)
[System.IO.File]::WriteAllBytes($dest_file_path, $bytes)
} else {
echo $null > $dest_file_path
}
`, fromPath, toPath)
cmd, err := shell.Execute(winrm.Powershell(script))
if err != nil {
return err
}
defer cmd.Close()
var wg sync.WaitGroup
copyFunc := func(w io.Writer, r io.Reader) {
defer wg.Done()
io.Copy(w, r)
}
wg.Add(2)
go copyFunc(os.Stdout, cmd.Stdout)
go copyFunc(os.Stderr, cmd.Stderr)
cmd.Wait()
wg.Wait()
if cmd.ExitCode() != 0 {
return errors.New(fmt.Sprintf("restore operation returned code=%d", cmd.ExitCode()))
}
return nil
}
func cleanupContent(client *winrm.Client, filePath string) error {
shell, err := client.CreateShell()
if err != nil {
return err
}
defer shell.Close()
cmd, _ := shell.Execute("powershell", "Remove-Item", filePath, "-ErrorAction SilentlyContinue")
cmd.Wait()
cmd.Close()
return nil
}
func uploadChunks(client *winrm.Client, filePath string, maxChunks int, reader io.Reader) (bool, error) {
shell, err := client.CreateShell()
if err != nil {
return false, errors.New(fmt.Sprintf("Couldn't create shell: %v", err))
}
defer shell.Close()
// Upload the file in chunks to get around the Windows command line size limit.
// Base64 encodes each set of three bytes into four bytes. In addition the output
// is padded to always be a multiple of four.
//
// ceil(n / 3) * 4 = m1 - m2
//
// where:
// n = bytes
// m1 = max (8192 character command limit.)
// m2 = len(filePath)
chunkSize := ((8000 - len(filePath)) / 4) * 3
chunk := make([]byte, chunkSize)
if maxChunks == 0 {
maxChunks = 1
}
for i := 0; i < maxChunks; i++ {
n, err := reader.Read(chunk)
if err != nil && err != io.EOF {
return false, err
}
if n == 0 {
return true, nil
}
content := base64.StdEncoding.EncodeToString(chunk[:n])
if err = appendContent(shell, filePath, content); err != nil {
return false, err
}
}
return false, nil
}