mirror of
https://github.com/avatao-content/baseimage-tutorial-framework
synced 2024-11-22 13:11:31 +00:00
Simplify IDE handler and file manager
This commit is contained in:
R. Richard
parent
e6d2777520
commit
d31a850a4e
@ -1,93 +1,56 @@
|
||||
from typing import Iterable
|
||||
from functools import wraps
|
||||
from glob import glob
|
||||
from fnmatch import fnmatchcase
|
||||
from os.path import basename, isfile, join, relpath, exists, isdir, realpath
|
||||
from os.path import dirname, isdir, isfile, realpath
|
||||
|
||||
|
||||
def _with_is_allowed(func):
|
||||
@wraps(func)
|
||||
def wrapper(self, *args, **kwargs):
|
||||
if self._is_allowed(args[0]): # pylint: disable=protected-access
|
||||
return func(self, *args, **kwargs)
|
||||
raise ValueError('Forbidden path.')
|
||||
return wrapper
|
||||
|
||||
|
||||
class FileManager: # pylint: disable=too-many-instance-attributes
|
||||
def __init__(self, working_directory, allowed_directories, selected_file=None, exclude=None):
|
||||
self._exclude, self.exclude = [], exclude
|
||||
self._allowed_directories, self.allowed_directories = None, allowed_directories
|
||||
self._workdir, self.workdir = None, working_directory
|
||||
self._filename, self.filename = None, selected_file or self.files[0]
|
||||
|
||||
@property
|
||||
def exclude(self):
|
||||
return self._exclude
|
||||
|
||||
@exclude.setter
|
||||
def exclude(self, exclude):
|
||||
if exclude is None:
|
||||
return
|
||||
if not isinstance(exclude, Iterable):
|
||||
raise TypeError('Exclude must be Iterable!')
|
||||
self._exclude = exclude
|
||||
|
||||
@property
|
||||
def workdir(self):
|
||||
return self._workdir
|
||||
|
||||
@workdir.setter
|
||||
def workdir(self, directory):
|
||||
if not exists(directory) or not isdir(directory):
|
||||
raise EnvironmentError(f'"{directory}" is not a directory!')
|
||||
if not self._is_in_allowed_dir(directory):
|
||||
raise EnvironmentError(f'Directory "{directory}" is not allowed!')
|
||||
self._workdir = directory
|
||||
|
||||
@property
|
||||
def allowed_directories(self):
|
||||
return self._allowed_directories
|
||||
|
||||
@allowed_directories.setter
|
||||
def allowed_directories(self, directories):
|
||||
self._allowed_directories = [realpath(directory) for directory in directories]
|
||||
|
||||
@property
|
||||
def filename(self):
|
||||
return self._filename
|
||||
|
||||
@filename.setter
|
||||
def filename(self, filename):
|
||||
if filename not in self.files:
|
||||
raise EnvironmentError('No such file in workdir!')
|
||||
self._filename = filename
|
||||
def __init__(self, patterns):
|
||||
self.patterns = patterns
|
||||
|
||||
@property
|
||||
def files(self):
|
||||
return [
|
||||
self._relpath(file)
|
||||
for file in glob(join(self._workdir, '**/*'), recursive=True)
|
||||
if isfile(file)
|
||||
and self._is_in_allowed_dir(file)
|
||||
and not self._is_blacklisted(file)
|
||||
]
|
||||
return list(set(
|
||||
path
|
||||
for pattern in self.patterns
|
||||
for path in glob(pattern, recursive=True)
|
||||
if isfile(path) and self._is_allowed(path)
|
||||
))
|
||||
|
||||
@property
|
||||
def file_contents(self):
|
||||
with open(self._filepath(self.filename), 'rb', buffering=0) as ifile:
|
||||
def parents(self):
|
||||
return list(set(
|
||||
self._find_directory(pattern)
|
||||
for pattern in self.patterns
|
||||
))
|
||||
|
||||
@staticmethod
|
||||
def _find_directory(pattern):
|
||||
while pattern and not isdir(pattern):
|
||||
pattern = dirname(pattern)
|
||||
return pattern
|
||||
|
||||
def _is_allowed(self, filepath):
|
||||
return any(
|
||||
fnmatchcase(realpath(filepath), pattern)
|
||||
for pattern in self.patterns
|
||||
)
|
||||
|
||||
@_with_is_allowed
|
||||
def read_file(self, filepath): # pylint: disable=no-self-use
|
||||
with open(filepath, 'rb', buffering=0) as ifile:
|
||||
return ifile.read().decode(errors='surrogateescape')
|
||||
|
||||
@file_contents.setter
|
||||
def file_contents(self, value):
|
||||
with open(self._filepath(self.filename), 'wb', buffering=0) as ofile:
|
||||
ofile.write(value.encode())
|
||||
|
||||
def _is_in_allowed_dir(self, path):
|
||||
return any(
|
||||
realpath(path).startswith(allowed_dir)
|
||||
for allowed_dir in self.allowed_directories
|
||||
)
|
||||
|
||||
def _is_blacklisted(self, file):
|
||||
return any(
|
||||
fnmatchcase(file, blacklisted) or
|
||||
fnmatchcase(basename(file), blacklisted)
|
||||
for blacklisted in self.exclude
|
||||
)
|
||||
|
||||
def _filepath(self, filename):
|
||||
return join(self._workdir, filename)
|
||||
|
||||
def _relpath(self, filename):
|
||||
return relpath(self._filepath(filename), start=self._workdir)
|
||||
@_with_is_allowed
|
||||
def write_file(self, filepath, contents): # pylint: disable=no-self-use
|
||||
with open(filepath, 'wb', buffering=0) as ofile:
|
||||
ofile.write(contents.encode())
|
||||
|
||||
@ -1,8 +1,8 @@
|
||||
# pylint: disable=redefined-outer-name
|
||||
from dataclasses import dataclass
|
||||
from secrets import token_urlsafe
|
||||
from os import mkdir, symlink
|
||||
from os.path import join
|
||||
from os import chdir, mkdir, symlink
|
||||
from pathlib import Path
|
||||
from tempfile import TemporaryDirectory
|
||||
|
||||
@ -13,112 +13,75 @@ from .file_manager import FileManager
|
||||
|
||||
@dataclass
|
||||
class ManagerContext:
|
||||
folder: str
|
||||
workdir: str
|
||||
subdir: str
|
||||
subfile: str
|
||||
manager: FileManager
|
||||
|
||||
def join(self, path):
|
||||
return join(self.folder, path)
|
||||
def create_random_file(self, dirname, extension):
|
||||
filename = self.join(f'{dirname}/{generate_name()}{extension}')
|
||||
Path(filename).touch()
|
||||
return filename
|
||||
|
||||
def create_random_folder(self, basepath):
|
||||
dirname = self.join(f'{basepath}/{generate_name()}')
|
||||
mkdir(dirname)
|
||||
return dirname
|
||||
|
||||
def create_random_link(self, source, dirname, extension):
|
||||
linkname = self.join(f'{dirname}/{generate_name()}{extension}')
|
||||
symlink(source, linkname)
|
||||
return linkname
|
||||
|
||||
def join(self, path):
|
||||
return join(self.workdir, path)
|
||||
|
||||
def generate_name():
|
||||
return token_urlsafe(16)
|
||||
|
||||
@pytest.fixture()
|
||||
def context():
|
||||
dirs = {}
|
||||
|
||||
with TemporaryDirectory() as workdir:
|
||||
chdir(workdir)
|
||||
for name in ['allowed', 'excluded', 'invis']:
|
||||
node = join(workdir, name)
|
||||
mkdir(node)
|
||||
Path(join(node, 'empty.txt')).touch()
|
||||
Path(join(node, 'empty.bin')).touch()
|
||||
dirs[name] = node
|
||||
subdir = join(workdir, generate_name())
|
||||
subfile = join(subdir, generate_name() + '.txt')
|
||||
mkdir(subdir)
|
||||
Path(subfile).touch()
|
||||
manager = FileManager([join(workdir, '**/*.txt')])
|
||||
yield ManagerContext(workdir, subdir, subfile, manager)
|
||||
|
||||
yield ManagerContext(
|
||||
workdir,
|
||||
FileManager(
|
||||
dirs['allowed'],
|
||||
[dirs['allowed'], dirs['excluded']],
|
||||
exclude=['*/excluded/*']
|
||||
)
|
||||
)
|
||||
def test_matching_files(context):
|
||||
newdir = context.create_random_folder(context.subdir)
|
||||
newfile = context.create_random_file(newdir, '.txt')
|
||||
newlink = context.create_random_link(newfile, newdir, '.txt')
|
||||
assert set(context.manager.files) == {context.subfile, newfile, newlink}
|
||||
|
||||
@pytest.mark.parametrize('subdir', ['allowed/', 'excluded/'])
|
||||
def test_select_allowed_dirs(context, subdir):
|
||||
context.manager.workdir = context.join(subdir)
|
||||
assert context.manager.workdir == context.join(subdir)
|
||||
newdir = context.join(subdir+'deep')
|
||||
mkdir(newdir)
|
||||
context.manager.workdir = newdir
|
||||
assert context.manager.workdir == newdir
|
||||
def test_unmatching_files(context):
|
||||
newtxt = context.create_random_file(context.workdir, '.txt')
|
||||
newbin = context.create_random_file(context.subdir, '.bin')
|
||||
context.create_random_link(newtxt, context.subdir, '.txt')
|
||||
context.create_random_link(newbin, context.subdir, '.txt')
|
||||
assert context.manager.files == [context.subfile]
|
||||
|
||||
@pytest.mark.parametrize('invdir', ['', 'invis'])
|
||||
def test_select_forbidden_dirs(context, invdir):
|
||||
fullpath = context.join(invdir)
|
||||
with pytest.raises(OSError):
|
||||
context.manager.workdir = fullpath
|
||||
assert context.manager.workdir != fullpath
|
||||
context.manager.allowed_directories += [fullpath]
|
||||
context.manager.workdir = fullpath
|
||||
assert context.manager.workdir == fullpath
|
||||
|
||||
|
||||
@pytest.mark.parametrize('filename', ['another.txt', '*.txt'])
|
||||
def test_select_allowed_files(context, filename):
|
||||
Path(context.join('allowed/'+filename)).touch()
|
||||
assert filename in context.manager.files
|
||||
context.manager.filename = filename
|
||||
assert context.manager.filename == filename
|
||||
|
||||
@pytest.mark.parametrize('path', [
|
||||
{'dir': 'allowed/', 'file': 'illegal.bin'},
|
||||
{'dir': 'excluded/', 'file': 'legal.txt'},
|
||||
{'dir': 'allowed/', 'file': token_urlsafe(16)+'.bin'},
|
||||
{'dir': 'excluded/', 'file': token_urlsafe(16)+'.txt'},
|
||||
{'dir': 'allowed/', 'file': token_urlsafe(32)+'.bin'},
|
||||
{'dir': 'excluded/', 'file': token_urlsafe(32)+'.txt'}
|
||||
])
|
||||
def test_select_excluded_files(context, path):
|
||||
context.manager.workdir = context.join(path['dir'])
|
||||
context.manager.exclude = ['*/excluded/*', '*.bin']
|
||||
Path(context.join(path['dir']+path['file'])).touch()
|
||||
assert path['file'] not in context.manager.files
|
||||
with pytest.raises(OSError):
|
||||
context.manager.filename = path['file']
|
||||
|
||||
@pytest.mark.parametrize('path', [
|
||||
{'src': 'excluded/empty.txt', 'dst': 'allowed/link.txt'},
|
||||
{'src': 'invis/empty.txt', 'dst': 'allowed/link.txt'},
|
||||
{'src': 'excluded/empty.txt', 'dst': 'allowed/'+token_urlsafe(16)+'.txt'},
|
||||
{'src': 'invis/empty.txt', 'dst': 'allowed/'+token_urlsafe(16)+'.txt'},
|
||||
{'src': 'excluded/empty.txt', 'dst': 'allowed/'+token_urlsafe(32)+'.txt'},
|
||||
{'src': 'invis/empty.txt', 'dst': 'allowed/'+token_urlsafe(32)+'.txt'}
|
||||
])
|
||||
def test_select_excluded_symlinks(context, path):
|
||||
symlink(context.join(path['src']), context.join(path['dst']))
|
||||
assert path['dst'] not in context.manager.files
|
||||
def test_parents(context):
|
||||
newdir = context.create_random_folder(context.workdir)
|
||||
context.manager.patterns += [f'{newdir}/[!/@]*/**/?.c']
|
||||
assert set(context.manager.parents) == {context.workdir, newdir}
|
||||
|
||||
def test_read_write_file(context):
|
||||
for _ in range(128):
|
||||
context.manager.filename = 'empty.txt'
|
||||
content = token_urlsafe(32)
|
||||
context.manager.file_contents = content
|
||||
assert context.manager.file_contents == content
|
||||
with open(context.join('allowed/empty.txt'), 'r') as ifile:
|
||||
context.manager.write_file(context.subfile, content)
|
||||
assert context.manager.read_file(context.subfile) == content
|
||||
with open(context.subfile, 'r') as ifile:
|
||||
assert ifile.read() == content
|
||||
|
||||
def test_regular_ide_actions(context):
|
||||
context.manager.workdir = context.join('allowed')
|
||||
newfile1, newfile2 = token_urlsafe(16), token_urlsafe(16)
|
||||
Path(context.join(f'allowed/{newfile1}')).touch()
|
||||
Path(context.join(f'allowed/{newfile2}')).touch()
|
||||
for _ in range(8):
|
||||
newfile1 = context.create_random_file(context.subdir, '.txt')
|
||||
newfile2 = context.create_random_file(context.subdir, '.txt')
|
||||
for _ in range(4):
|
||||
context.manager.filename = newfile1
|
||||
content1 = token_urlsafe(32)
|
||||
context.manager.file_contents = content1
|
||||
context.manager.filename = newfile2
|
||||
content2 = token_urlsafe(32)
|
||||
context.manager.file_contents = content2
|
||||
context.manager.filename = newfile1
|
||||
assert context.manager.file_contents == content1
|
||||
context.manager.filename = newfile2
|
||||
assert context.manager.file_contents == content2
|
||||
content1, content2 = token_urlsafe(32), token_urlsafe(32)
|
||||
context.manager.write_file(newfile1, content1)
|
||||
context.manager.write_file(newfile2, content2)
|
||||
assert context.manager.read_file(newfile1) == content1
|
||||
assert context.manager.read_file(newfile2) == content2
|
||||
|
||||
@ -1,4 +1,5 @@
|
||||
import logging
|
||||
from os.path import isfile
|
||||
|
||||
from tfw.internals.networking import Scope
|
||||
from tfw.internals.inotify import InotifyObserver
|
||||
@ -32,161 +33,62 @@ BUILD_ARTIFACTS = (
|
||||
|
||||
|
||||
class IdeHandler:
|
||||
keys = ['ide']
|
||||
# pylint: disable=too-many-arguments,anomalous-backslash-in-string
|
||||
"""
|
||||
Event handler implementing the backend of our browser based IDE.
|
||||
By default all files in the directory specified in __init__ are displayed
|
||||
on the fontend. Note that this is a stateful component.
|
||||
keys = ['ide.read', 'ide.write']
|
||||
|
||||
When any file in the selected directory changes they are automatically refreshed
|
||||
on the frontend (this is done by listening to inotify events).
|
||||
|
||||
This EventHandler accepts messages that have a data['command'] key specifying
|
||||
a command to be executed.
|
||||
|
||||
The API of each command is documented in their respective handler.
|
||||
"""
|
||||
def __init__(self, *, directory, allowed_directories, selected_file=None, exclude=None):
|
||||
"""
|
||||
:param key: the key this instance should listen to
|
||||
:param directory: working directory which the EventHandler should serve files from
|
||||
:param allowed_directories: list of directories that can be switched to using selectdir
|
||||
:param selected_file: file that is selected by default
|
||||
:param exclude: list of filenames that should not appear between files (for .o, .pyc, etc.)
|
||||
"""
|
||||
def __init__(self, *, patterns, initial_file=''):
|
||||
self.connector = None
|
||||
try:
|
||||
self.filemanager = FileManager(
|
||||
allowed_directories=allowed_directories,
|
||||
working_directory=directory,
|
||||
selected_file=selected_file,
|
||||
exclude=exclude
|
||||
)
|
||||
except IndexError:
|
||||
raise EnvironmentError(
|
||||
f'No file(s) in IdeEventHandler working_directory "{directory}"!'
|
||||
)
|
||||
self.filemanager = FileManager(patterns)
|
||||
self._initial_file = initial_file
|
||||
|
||||
self.monitor = InotifyObserver(
|
||||
self.filemanager.allowed_directories,
|
||||
path=self.filemanager.parents,
|
||||
exclude=BUILD_ARTIFACTS
|
||||
)
|
||||
self.monitor.on_modified = self._reload_frontend
|
||||
self.monitor.start()
|
||||
|
||||
self.commands = {
|
||||
'read': self.read,
|
||||
'write': self.write,
|
||||
'select': self.select,
|
||||
'selectdir': self.select_dir,
|
||||
'exclude': self.exclude
|
||||
'ide.read' : self.read,
|
||||
'ide.write' : self.write
|
||||
}
|
||||
|
||||
@property
|
||||
def initial_file(self):
|
||||
if not isfile(self._initial_file):
|
||||
self._initial_file = self.filemanager.files[0]
|
||||
return self._initial_file
|
||||
|
||||
def _reload_frontend(self, event): # pylint: disable=unused-argument
|
||||
self.send_message({
|
||||
'key': 'ide',
|
||||
'data': {'command': 'reload'}
|
||||
})
|
||||
self.send_message({'key': 'ide.reload'})
|
||||
|
||||
def send_message(self, message):
|
||||
self.connector.send_message(message, scope=Scope.WEBSOCKET)
|
||||
|
||||
def read(self, data):
|
||||
"""
|
||||
Read the currently selected file.
|
||||
|
||||
:return dict: TFW message data containing key 'content'
|
||||
(contents of the selected file)
|
||||
"""
|
||||
def read(self, message):
|
||||
if message.get('files'):
|
||||
self.filemanager.patterns = message['files']
|
||||
try:
|
||||
data['content'] = self.filemanager.file_contents
|
||||
message['content'] = self.filemanager.read_file(message['filename'])
|
||||
except PermissionError:
|
||||
data['content'] = 'You have no permission to open that file :('
|
||||
message['content'] = 'You have no permission to open that file :('
|
||||
except FileNotFoundError:
|
||||
data['content'] = 'This file was removed :('
|
||||
message['content'] = 'This file was removed :('
|
||||
except Exception: # pylint: disable=broad-except
|
||||
data['content'] = 'Failed to read file :('
|
||||
return data
|
||||
message['content'] = 'Failed to read file :('
|
||||
|
||||
def write(self, data):
|
||||
"""
|
||||
Overwrites a file with the desired string.
|
||||
|
||||
:param data: TFW message data containing key 'content'
|
||||
(new file content)
|
||||
|
||||
"""
|
||||
def write(self, message):
|
||||
try:
|
||||
self.filemanager.file_contents = data['content']
|
||||
self.filemanager.write_file(message['filename'], message['content'])
|
||||
except Exception: # pylint: disable=broad-except
|
||||
LOG.exception('Error writing file!')
|
||||
del data['content']
|
||||
return data
|
||||
|
||||
def select(self, data):
|
||||
"""
|
||||
Selects a file from the current directory.
|
||||
|
||||
:param data: TFW message data containing 'filename'
|
||||
(name of file to select relative to the current directory)
|
||||
"""
|
||||
try:
|
||||
self.filemanager.filename = data['filename']
|
||||
except EnvironmentError:
|
||||
LOG.exception('Failed to select file "%s"', data['filename'])
|
||||
return data
|
||||
|
||||
def select_dir(self, data):
|
||||
"""
|
||||
Select a new working directory to display files from.
|
||||
|
||||
:param data: TFW message data containing 'directory'
|
||||
(absolute path of diretory to select.
|
||||
must be a path whitelisted in
|
||||
self.allowed_directories)
|
||||
"""
|
||||
try:
|
||||
self.filemanager.workdir = data['directory']
|
||||
try:
|
||||
self.filemanager.filename = self.filemanager.files[0]
|
||||
self.read(data)
|
||||
except IndexError:
|
||||
data['content'] = 'No files in this directory :('
|
||||
except EnvironmentError as err:
|
||||
LOG.error(
|
||||
'Failed to select directory "%s". Reason: %s',
|
||||
data['directory'], str(err)
|
||||
)
|
||||
return data
|
||||
|
||||
def exclude(self, data):
|
||||
"""
|
||||
Overwrite list of excluded files
|
||||
|
||||
:param data: TFW message data containing 'exclude'
|
||||
(list of unix-style filename patterns to be excluded,
|
||||
e.g.: ["\*.pyc", "\*.o")
|
||||
"""
|
||||
try:
|
||||
self.filemanager.exclude = list(data['exclude'])
|
||||
except TypeError:
|
||||
LOG.error('Exclude must be Iterable!')
|
||||
return data
|
||||
|
||||
def attach_fileinfo(self, data):
|
||||
"""
|
||||
Basic information included in every response to the frontend.
|
||||
"""
|
||||
data['filename'] = self.filemanager.filename
|
||||
data['files'] = self.filemanager.files
|
||||
data['directory'] = self.filemanager.workdir
|
||||
del message['content']
|
||||
|
||||
def handle_event(self, message, _):
|
||||
try:
|
||||
data = message['data']
|
||||
message['data'] = self.commands[data['command']](data)
|
||||
self.attach_fileinfo(data)
|
||||
if message['filename'] == '':
|
||||
message['filename'] = self.initial_file
|
||||
self.commands[message['key']](message)
|
||||
message['files'] = self.filemanager.files
|
||||
self.send_message(message)
|
||||
except KeyError:
|
||||
LOG.error('IGNORING MESSAGE: Invalid message received: %s', message)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user