func (*keychainWindows) DeletePassword(service, account string) error {
// Validate input
serviceValid := isValidNonNullUTF8(service)
accountValid := isValidNonNullUTF8(account)
if !(serviceValid && accountValid) {
return ErrInvalidValue
}
// Compute target item name
target := targetFormat(service, account)
// Convert the target name. See note in AddPassword.
targetUTF16Ptr, err := syscall.UTF16PtrFromString(target)
if err != nil {
return ErrInvalidValue
}
// NOTE: For some reason they use LPCWSTR here, as opposed to LPWSTR in the
// CREDENTIALW struct
targetUTF16 := C.LPCWSTR(unsafe.Pointer(targetUTF16Ptr))
// Delete the credential
if C.CredDeleteW(targetUTF16, C.CRED_TYPE_GENERIC, 0) != C.TRUE {
return ErrUnknown
}
// All done
return nil
}
func (*keychainWindows) GetPassword(service, account string) (string, error) {
// Validate input
serviceValid := isValidNonNullUTF8(service)
accountValid := isValidNonNullUTF8(account)
if !(serviceValid && accountValid) {
return "", ErrInvalidValue
}
// Compute target item name
target := targetFormat(service, account)
// Convert the target name. See note in AddPassword.
targetUTF16Ptr, err := syscall.UTF16PtrFromString(target)
if err != nil {
return "", ErrInvalidValue
}
// NOTE: For some reason they use LPCWSTR here, as opposed to LPWSTR in the
// CREDENTIALW struct
targetUTF16 := C.LPCWSTR(unsafe.Pointer(targetUTF16Ptr))
// Query the credential
var credential C.PCREDENTIALW
if C.CredReadW(targetUTF16, C.CRED_TYPE_GENERIC, 0, &credential) != C.TRUE {
return "", ErrNotFound
}
// Extract the password blob
result := C.GoStringN(
(*C.char)(unsafe.Pointer(credential.CredentialBlob)),
C.int(credential.CredentialBlobSize),
)
// Free the credential memory
C.CredFree(C.PVOID(credential))
// All done
return result, nil
}
func utf16Convert(s string) (ptr C.LPCWSTR, length int) {
encoded := utf16.Encode([]rune(s + "\x00"))
return C.LPCWSTR((*C.WCHAR)(&encoded[0])), len(encoded)
}
