# Enhanced gcode file management and analysis
#
# Copyright (C) 2020 Eric Callahan <arksine.code@gmail.com>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
import os
import sys
import shutil
import io
import zipfile
import logging
import json
from tornado.ioloop import IOLoop, PeriodicCallback
from tornado.locks import Event
VALID_GCODE_EXTS = ['.gcode', '.g', '.gco']
FULL_ACCESS_ROOTS = ["gcodes", "config"]
METADATA_SCRIPT = os.path.abspath(os.path.join(
os.path.dirname(__file__), "../../scripts/extract_metadata.py"))
class FileManager:
def __init__(self, config):
self.server = config.get_server()
self.file_paths = {}
self.gcode_metadata = MetadataStorage(self.server)
self.fixed_path_args = {}
# Register file management endpoints
self.server.register_endpoint(
"/server/files/list", ['GET'], self._handle_filelist_request)
self.server.register_endpoint(
"/server/files/metadata", ['GET'], self._handle_metadata_request)
self.server.register_endpoint(
"/server/files/directory", ['GET', 'POST', 'DELETE'],
self._handle_directory_request)
self.server.register_endpoint(
"/server/files/move", ['POST'], self._handle_file_move_copy)
self.server.register_endpoint(
"/server/files/copy", ['POST'], self._handle_file_move_copy)
self.server.register_endpoint(
"/server/files/delete_file", ['DELETE'], self._handle_file_delete,
protocol=["websocket"])
# Register APIs to handle file uploads
self.server.register_upload_handler("/server/files/upload")
self.server.register_upload_handler("/api/files/local")
self.server.register_event_handler(
"server:klippy_identified", self._update_fixed_paths)
# Register Klippy Configuration Path
config_path = config.get('config_path', None)
if config_path is not None:
ret = self.register_directory('config', config_path)
if not ret:
raise config.error(
"Option 'config_path' is not a valid directory")
def _update_fixed_paths(self):
kinfo = self.server.get_klippy_info()
paths = {k: kinfo.get(k) for k in
['klipper_path', 'python_path',
'log_file', 'config_file']}
if paths == self.fixed_path_args:
# No change in fixed paths
return
self.fixed_path_args = paths
str_paths = "\n".join([f"{k}: {v}" for k, v in paths.items()])
logging.debug(f"\nUpdating Fixed Paths:\n{str_paths}")
# Register path for example configs
klipper_path = paths.get('klipper_path', None)
if klipper_path is not None:
example_cfg_path = os.path.join(klipper_path, "config")
self.register_directory("config_examples", example_cfg_path)
docs_path = os.path.join(klipper_path, "docs")
self.register_directory("docs", docs_path)
# Register log path
log_file = paths.get('log_file')
if log_file is not None:
log_path = os.path.abspath(os.path.expanduser(log_file))
self.server.register_static_file_handler(
"klippy.log", log_path, force=True)
def register_directory(self, root, path):
if path is None:
return False
path = os.path.abspath(os.path.expanduser(path))
if os.path.islink(path):
path = os.path.realpath(path)
if not os.path.isdir(path) or path == "/":
logging.info(
f"\nSupplied path ({path}) for ({root}) a valid. Make sure\n"
"that the path exists and is not the file system root.")
return False
permissions = os.R_OK
if root in FULL_ACCESS_ROOTS:
permissions |= os.W_OK
if not os.access(path, permissions):
logging.info(
f"\nMoonraker does not have permission to access path "
f"({path}) for ({root}).")
return False
if path != self.file_paths.get(root, ""):
self.file_paths[root] = path
self.server.register_static_file_handler(root, path)
if root == "gcodes":
# scan metadata
self.gcode_metadata.update_gcode_path(path)
try:
self.get_file_list("gcodes")
except Exception:
logging.exception(
f"Unable to initialize gcode metadata")
return True
def get_sd_directory(self):
return self.file_paths.get('gcodes', "")
def get_registered_dirs(self):
return list(self.file_paths.keys())
def get_fixed_path_args(self):
return dict(self.fixed_path_args)
async def _handle_filelist_request(self, web_request):
root = web_request.get_str('root', "gcodes")
return self.get_file_list(root, list_format=True, notify=True)
async def _handle_metadata_request(self, web_request):
requested_file = web_request.get_str('filename')
metadata = self.gcode_metadata.get(requested_file, None)
if metadata is None:
raise self.server.error(
f"Metadata not available for <{requested_file}>", 404)
metadata['filename'] = requested_file
return metadata
async def _handle_directory_request(self, web_request):
directory = web_request.get_str('path', "gcodes")
root, rel_path, dir_path = self._convert_path(directory)
action = web_request.get_action()
if action == 'GET':
is_extended = web_request.get_boolean('extended', False)
# Get list of files and subdirectories for this target
dir_info = self._list_directory(dir_path, is_extended)
return dir_info
elif action == 'POST' and root in FULL_ACCESS_ROOTS:
# Create a new directory
try:
os.mkdir(dir_path)
except Exception as e:
raise self.server.error(str(e))
self.notify_filelist_changed("create_dir", rel_path, root)
elif action == 'DELETE' and root in FULL_ACCESS_ROOTS:
# Remove a directory
if directory.strip("/") == root:
raise self.server.error(
"Cannot delete root directory")
if not os.path.isdir(dir_path):
raise self.server.error(
f"Directory does not exist ({directory})")
force = web_request.get_boolean('force', False)
if force:
# Make sure that the directory does not contain a file
# loaded by the virtual_sdcard
await self._handle_operation_check(dir_path)
shutil.rmtree(dir_path)
if root == "gcodes":
self.gcode_metadata.prune_metadata()
else:
try:
os.rmdir(dir_path)
except Exception as e:
raise self.server.error(str(e))
self.notify_filelist_changed("delete_dir", rel_path, root)
else:
raise self.server.error("Operation Not Supported", 405)
return "ok"
async def _handle_operation_check(self, requested_path):
# Get virtual_sdcard status
klippy_apis = self.server.lookup_plugin('klippy_apis')
result = await klippy_apis.query_objects({'print_stats': None})
pstats = result.get('print_stats', {})
loaded_file = pstats.get('filename', "")
state = pstats.get('state', "")
gc_path = self.file_paths.get('gcodes', "")
full_path = os.path.join(gc_path, loaded_file)
if loaded_file and state != "complete":
if os.path.isdir(requested_path):
# Check to see of the loaded file is in the request
if full_path.startswith(requested_path):
raise self.server.error("File currently in use", 403)
elif full_path == requested_path:
raise self.server.error("File currently in use", 403)
ongoing = state in ["printing", "paused"]
return ongoing
def _convert_path(self, request_path):
# Parse the root, relative path, and disk path from a remote request
parts = request_path.strip("/").split("/")
if not parts:
raise self.server.error(f"Invalid path: {request_path}")
root = parts[0]
if root not in self.file_paths:
raise self.server.error(f"Invalid root path ({root})")
disk_path = self.file_paths[root]
rel_path = ""
if len(parts) > 1:
rel_path = "/".join(parts[1:])
disk_path = os.path.join(disk_path, rel_path)
return root, rel_path, disk_path
async def _handle_file_move_copy(self, web_request):
source = web_request.get_str("source")
destination = web_request.get_str("dest")
ep = web_request.get_endpoint()
if source is None:
raise self.server.error("File move/copy request issing source")
if destination is None:
raise self.server.error(
"File move/copy request missing destination")
source_root, src_rel_path, source_path = self._convert_path(source)
dest_root, dst_rel_path, dest_path = self._convert_path(destination)
if dest_root not in FULL_ACCESS_ROOTS:
raise self.server.error(
f"Destination path is read-only: {dest_root}")
if not os.path.exists(source_path):
raise self.server.error(f"File {source_path} does not exist")
# make sure the destination is not in use
if os.path.exists(dest_path):
await self._handle_operation_check(dest_path)
action = op_result = ""
if ep == "/server/files/move":
if source_root not in FULL_ACCESS_ROOTS:
raise self.server.error(
f"Source path is read-only, cannot move: {source_root}")
# if moving the file, make sure the source is not in use
await self._handle_operation_check(source_path)
try:
op_result = shutil.move(source_path, dest_path)
except Exception as e:
raise self.server.error(str(e))
if source_root == "gcodes":
if os.path.isdir(op_result):
self.gcode_metadata.prune_metadata()
else:
self.gcode_metadata.remove_file(src_rel_path)
action = "move_item"
elif ep == "/server/files/copy":
try:
if os.path.isdir(source_path):
op_result = shutil.copytree(source_path, dest_path)
else:
op_result = shutil.copy2(source_path, dest_path)
except Exception as e:
raise self.server.error(str(e))
action = "copy_item"
if op_result != dest_path:
dst_rel_path = os.path.join(
dst_rel_path, os.path.basename(op_result))
self.notify_filelist_changed(
action, dst_rel_path, dest_root,
{'path': src_rel_path, 'root': source_root})
return "ok"
def _list_directory(self, path, is_extended=False):
if not os.path.isdir(path):
raise self.server.error(
f"Directory does not exist ({path})")
flist = {'dirs': [], 'files': []}
for fname in os.listdir(path):
full_path = os.path.join(path, fname)
if not os.path.exists(full_path):
continue
path_info = self._get_path_info(full_path)
if os.path.isdir(full_path):
path_info['dirname'] = fname
flist['dirs'].append(path_info)
elif os.path.isfile(full_path):
path_info['filename'] = fname
# Check to see if a filelist update is necessary
ext = os.path.splitext(fname)[-1].lower()
gc_path = self.file_paths.get('gcodes', None)
if gc_path is not None and full_path.startswith(gc_path) and \
ext in VALID_GCODE_EXTS:
rel_path = os.path.relpath(full_path, start=gc_path)
self.gcode_metadata.parse_metadata(
rel_path, path_info['size'], path_info['modified'],
notify=True)
metadata = self.gcode_metadata.get(rel_path, None)
if metadata is not None and is_extended:
path_info.update(metadata)
flist['files'].append(path_info)
usage = shutil.disk_usage(path)
flist['disk_usage'] = usage._asdict()
return flist
def _get_path_info(self, path):
modified = os.path.getmtime(path)
size = os.path.getsize(path)
path_info = {'modified': modified, 'size': size}
return path_info
async def process_file_upload(self, request):
# lookup root file path
root = self._get_argument(request, 'root', "gcodes")
if root == "gcodes":
result = await self._do_gcode_upload(request)
elif root in FULL_ACCESS_ROOTS:
result = self._do_standard_upload(request, root)
else:
raise self.server.error(f"Invalid root request: {root}")
return result
async def _do_gcode_upload(self, request):
start_print = print_ongoing = False
root_path = self.file_paths.get("gcodes", "")
if not root_path:
raise self.server.error("Gcodes root not available")
start_print = self._get_argument(request, 'print', "false") == "true"
upload = self._get_upload_info(request, root_path)
fparts = os.path.splitext(upload['full_path'])
is_ufp = fparts[-1].lower() == ".ufp"
# Verify that the operation can be done if attempting to upload a gcode
try:
check_path = upload['full_path']
if is_ufp:
check_path = fparts[0] + ".gcode"
print_ongoing = await self._handle_operation_check(
check_path)
except self.server.error as e:
if e.status_code == 403:
raise self.server.error(
"File is loaded, upload not permitted", 403)
else:
# Couldn't reach Klippy, so it should be safe
# to permit the upload but not start
start_print = False
# Don't start if another print is currently in progress
start_print = start_print and not print_ongoing
self._write_file(upload, is_ufp)
# Fetch Metadata
finfo = self._get_path_info(upload['full_path'])
evt = self.gcode_metadata.parse_metadata(
upload['filename'], finfo['size'], finfo['modified'])
await evt.wait()
if start_print:
# Make a Klippy Request to "Start Print"
klippy_apis = self.server.lookup_plugin('klippy_apis')
try:
await klippy_apis.start_print(upload['filename'])
except self.server.error:
# Attempt to start print failed
start_print = False
self.notify_filelist_changed(
'upload_file', upload['filename'], "gcodes")
return {'result': upload['filename'], 'print_started': start_print}
def _do_standard_upload(self, request, root):
path = self.file_paths.get(root, None)
if path is None:
raise self.server.error(f"Unknown root path: {root}")
upload = self._get_upload_info(request, path)
self._write_file(upload)
self.notify_filelist_changed('upload_file', upload['filename'], root)
return {'result': upload['filename']}
def _get_argument(self, request, name, default=None):
args = request.arguments.get(name, None)
if args is not None:
return args[0].decode().strip()
return default
def _get_upload_info(self, request, root_path):
# check relative path
dir_path = self._get_argument(request, 'path', "")
# fetch the upload from the request
if len(request.files) != 1:
raise self.server.error(
"Bad Request, can only process a single file upload")
f_list = list(request.files.values())[0]
if len(f_list) != 1:
raise self.server.error(
"Bad Request, can only process a single file upload")
upload = f_list[0]
if os.path.isfile(root_path):
filename = os.path.basename(root_path)
full_path = root_path
dir_path = ""
else:
filename = upload['filename'].strip().lstrip("/")
if dir_path:
filename = os.path.join(dir_path, filename)
full_path = os.path.abspath(os.path.join(root_path, filename))
# Validate the path. Don't allow uploads to a parent of the root
if not full_path.startswith(root_path):
raise self.server.error(
f"Cannot write to path: {full_path}")
return {
'filename': filename,
'body': upload['body'],
'dir_path': dir_path,
'full_path': full_path}
def _write_file(self, upload, unzip_ufp=False):
try:
if upload['dir_path']:
os.makedirs(os.path.dirname(
upload['full_path']), exist_ok=True)
if unzip_ufp:
self._unzip_ufp(upload)
else:
with open(upload['full_path'], 'wb') as fh:
fh.write(upload['body'])
except Exception:
raise self.server.error("Unable to save file", 500)
# UFP Extraction Implementation inspired by by GitHub user @cdkeito
def _unzip_ufp(self, upload):
base_name = os.path.splitext(
os.path.basename(upload['filename']))[0]
working_dir = os.path.dirname(upload['full_path'])
thumb_dir = os.path.join(working_dir, "thumbs")
ufp_bytes = io.BytesIO(upload['body'])
gc_bytes = img_bytes = None
with zipfile.ZipFile(ufp_bytes) as zf:
gc_bytes = zf.read("/3D/model.gcode")
try:
img_bytes = zf.read("/Metadata/thumbnail.png")
except Exception:
img_bytes = None
if gc_bytes is not None:
gc_name = base_name + ".gcode"
gc_path = os.path.join(working_dir, gc_name)
with open(gc_path, "wb") as gc_file:
gc_file.write(gc_bytes)
# update upload file name to extracted gcode file
upload['full_path'] = gc_path
upload['filename'] = os.path.join(
os.path.dirname(upload['filename']), gc_name)
else:
raise self.server.error(
f"UFP file {upload['filename']} does not "
"contain a gcode file")
if img_bytes is not None:
thumb_name = base_name + ".png"
thumb_path = os.path.join(thumb_dir, thumb_name)
try:
if not os.path.exists(thumb_dir):
os.mkdir(thumb_dir)
with open(thumb_path, "wb") as thumb_file:
thumb_file.write(img_bytes)
except Exception:
logging.exception("Unable to write Image")
def get_file_list(self, root, list_format=False, notify=False):
# Use os.walk find files in sd path and subdirs
filelist = {}
path = self.file_paths.get(root, None)
if path is None or not os.path.isdir(path):
msg = f"Failed to build file list, invalid path: {root}: {path}"
logging.info(msg)
raise self.server.error(msg)
logging.info(f"Updating File List <{root}>...")
st = os.stat(path)
visited_dirs = {(st.st_dev, st.st_ino)}
for dir_path, dir_names, files in os.walk(path, followlinks=True):
scan_dirs = []
# Filter out directories that have already been visted. This
# prevents infinite recrusion "followlinks" is set to True
for dname in dir_names:
st = os.stat(os.path.join(dir_path, dname))
key = (st.st_dev, st.st_ino)
if key not in visited_dirs:
visited_dirs.add(key)
scan_dirs.append(dname)
dir_names[:] = scan_dirs
for name in files:
ext = os.path.splitext(name)[-1].lower()
if root == 'gcodes' and ext not in VALID_GCODE_EXTS:
continue
full_path = os.path.join(dir_path, name)
fname = full_path[len(path) + 1:]
finfo = self._get_path_info(full_path)
filelist[fname] = finfo
if root == 'gcodes':
self.gcode_metadata.parse_metadata(
fname, finfo['size'], finfo['modified'], notify)
if list_format:
flist = []
for fname in sorted(filelist, key=str.lower):
fdict = {'filename': fname}
fdict.update(filelist[fname])
flist.append(fdict)
return flist
return filelist
def get_file_metadata(self, filename):
if filename[0] == '/':
filename = filename[1:]
# Remove "gcodes" of its added. It is valid for a request to
# include to the root or assume the root is gcodes
if filename.startswith('gcodes/'):
filename = filename[7:]
return self.gcode_metadata.get(filename, {})
def list_dir(self, directory, simple_format=False):
# List a directory relative to its root.
if directory[0] == "/":
directory = directory[1:]
parts = directory.split("/", 1)
root = parts[0]
if root not in self.file_paths:
raise self.server.error(
f"Invalid Directory Request: {directory}")
path = self.file_paths[root]
if len(parts) == 1:
dir_path = path
else:
dir_path = os.path.join(path, parts[1])
if not os.path.isdir(dir_path):
raise self.server.error(
f"Directory does not exist ({dir_path})")
flist = self._list_directory(dir_path)
if simple_format:
simple_list = []
for dirobj in flist['dirs']:
simple_list.append("*" + dirobj['dirname'])
for fileobj in flist['files']:
fname = fileobj['filename']
ext = os.path.splitext(fname)[-1].lower()
if root == "gcodes" and ext in VALID_GCODE_EXTS:
simple_list.append(fname)
return simple_list
return flist
async def _handle_file_delete(self, web_request):
file_path = web_request.get_str("path")
return await self.delete_file(file_path)
async def delete_file(self, path):
parts = path.lstrip("/").split("/", 1)
if len(parts) != 2:
raise self.server.error(
f"Path not available for DELETE: {path}", 405)
root = parts[0]
filename = parts[1]
if root not in self.file_paths or root not in FULL_ACCESS_ROOTS:
raise self.server.error(
f"Path not available for DELETE: {path}", 405)
root_path = self.file_paths[root]
full_path = os.path.join(root_path, filename)
if not os.path.isfile(full_path):
raise self.server.error(f"Invalid file path: {path}")
if root == "gcodes":
try:
await self._handle_operation_check(full_path)
except self.server.error as e:
if e.status_code == 403:
raise
self.gcode_metadata.remove_file(filename)
os.remove(full_path)
self.notify_filelist_changed('delete_file', filename, root)
return filename
def notify_filelist_changed(self, action, fname, root, source_item={}):
flist = self.get_file_list(root, notify=True)
file_info = flist.get(fname, {'size': 0, 'modified': 0})
file_info.update({'path': fname, 'root': root})
result = {'action': action, 'item': file_info}
if source_item:
result.update({'source_item': source_item})
self.server.send_event("file_manager:filelist_changed", result)
def close(self):
self.gcode_metadata.close()
METADATA_PRUNE_TIME = 600000
class MetadataStorage:
def __init__(self, server):
self.server = server
self.metadata = {}
self.pending_requests = {}
self.events = {}
self.script_response = None
self.busy = False
self.gc_path = os.path.expanduser("~")
self.prune_cb = PeriodicCallback(
self.prune_metadata, METADATA_PRUNE_TIME)
def update_gcode_path(self, path):
if path == self.gc_path:
return
self.metadata = {}
self.gc_path = path
if not self.prune_cb.is_running():
self.prune_cb.start()
def close(self):
self.prune_cb.stop()
def get(self, key, default=None):
if key not in self.metadata:
return default
return dict(self.metadata[key])
def __getitem__(self, key):
return dict(self.metadata[key])
def _handle_script_response(self, result):
try:
proc_resp = json.loads(result.strip())
except Exception:
logging.exception("file_manager: unable to load metadata")
logging.debug(result)
return
proc_log = proc_resp.get('log', [])
for log_msg in proc_log:
logging.info(log_msg)
if 'file' in proc_resp:
self.script_response = proc_resp
def prune_metadata(self):
for fname in list(self.metadata.keys()):
fpath = os.path.join(self.gc_path, fname)
if not os.path.exists(fpath):
del self.metadata[fname]
logging.info(f"Pruned file: {fname}")
continue
def _has_valid_data(self, fname, fsize, modified):
mdata = self.metadata.get(fname, {'size': "", 'modified': 0})
return mdata['size'] == fsize and mdata['modified'] == modified
def remove_file(self, fname):
self.metadata.pop(fname)
def parse_metadata(self, fname, fsize, modified, notify=False):
evt = Event()
if fname in self.pending_requests or \
self._has_valid_data(fname, fsize, modified):
# request already pending or not necessary
evt.set()
return evt
self.pending_requests[fname] = (fsize, modified, notify, evt)
if self.busy:
return evt
self.busy = True
IOLoop.current().spawn_callback(self._process_metadata_update)
return evt
async def _process_metadata_update(self):
while self.pending_requests:
fname, (fsize, modified, notify, evt) = \
self.pending_requests.popitem()
if self._has_valid_data(fname, fsize, modified):
evt.set()
continue
retries = 3
while retries:
try:
await self._run_extract_metadata(fname, notify)
except Exception:
logging.exception("Error running extract_metadata.py")
retries -= 1
else:
break
else:
self.metadata[fname] = {'size': fsize, 'modified': modified}
logging.info(
f"Unable to extract medatadata from file: {fname}")
evt.set()
self.busy = False
async def _run_extract_metadata(self, filename, notify):
# Escape single quotes in the file name so that it may be
# properly loaded
filename = filename.replace("\"", "\\\"")
cmd = " ".join([sys.executable, METADATA_SCRIPT, "-p",
self.gc_path, "-f", f"\"{filename}\""])
shell_command = self.server.lookup_plugin('shell_command')
scmd = shell_command.build_shell_command(
cmd, self._handle_script_response)
self.script_response = None
await scmd.run(timeout=10.)
if self.script_response is None:
raise self.server.error("Unable to extract metadata")
path = self.script_response['file']
metadata = self.script_response['metadata']
if not metadata:
# This indicates an error, do not add metadata for this
raise self.server.error("Unable to extract metadata")
self.metadata[path] = dict(metadata)
metadata['filename'] = path
if notify:
self.server.send_event(
"file_manager:metadata_update", metadata)
def load_plugin(config):
return FileManager(config)