524 lines
15 KiB
Python
524 lines
15 KiB
Python
import argparse
|
|
import base64
|
|
import cgi
|
|
import http.cookies
|
|
import http.server
|
|
import math
|
|
import mimetypes
|
|
import os
|
|
import pathlib
|
|
import random
|
|
import socketserver
|
|
import sys
|
|
import threading
|
|
import types
|
|
import urllib.parse
|
|
import zipstream
|
|
|
|
# pip install voussoirkit
|
|
from voussoirkit import betterhelp
|
|
from voussoirkit import bytestring
|
|
from voussoirkit import pathclass
|
|
from voussoirkit import ratelimiter
|
|
|
|
FILE_READ_CHUNK = bytestring.MIBIBYTE
|
|
RATELIMITER = ratelimiter.Ratelimiter(16 * bytestring.MIBIBYTE)
|
|
|
|
OPENDIR_TEMPLATE = '''
|
|
<html>
|
|
<body>
|
|
<meta charset="UTF-8">
|
|
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
|
|
<style type="text/css">Body {{font-family:Consolas}}</style>
|
|
<table style="width: 100%">
|
|
{table_rows}
|
|
</table>
|
|
|
|
</body>
|
|
</html>
|
|
'''
|
|
|
|
PASSWORD_PROMPT_HTML = '''
|
|
<html>
|
|
<body>
|
|
<meta charset="UTF-8">
|
|
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
|
|
<style type="text/css">Body {{font-family:Consolas}}</style>
|
|
|
|
<form action="/password" method="post">
|
|
<input type="text" name="password" placeholder="password" autocomplete="off"/>
|
|
<input type="hidden" name="goto" value="{goto}"/>
|
|
<input type="submit" value="Submit"/>
|
|
</form>
|
|
</body>
|
|
</html>
|
|
'''
|
|
|
|
ROOT_DIRECTORY = pathclass.Path(os.getcwd())
|
|
TOKEN_COOKIE_NAME = 'simpleserver_token'
|
|
|
|
# SERVER ###########################################################################################
|
|
|
|
class RequestHandler(http.server.BaseHTTPRequestHandler):
|
|
def __init__(self, *args, password=None, accepted_tokens=None, accepted_ips=None, **kwargs):
|
|
self.accepted_tokens = accepted_tokens
|
|
self.accepted_ips = accepted_ips
|
|
self.password = password
|
|
super().__init__(*args, **kwargs)
|
|
|
|
@property
|
|
def auth_cookie(self):
|
|
cookie = self.headers.get('Cookie')
|
|
if not cookie:
|
|
return None
|
|
|
|
cookie = http.cookies.SimpleCookie(cookie)
|
|
token = cookie.get(TOKEN_COOKIE_NAME)
|
|
if not token:
|
|
return None
|
|
|
|
return token
|
|
|
|
@property
|
|
def auth_header(self):
|
|
authorization = self.headers.get('Authorization')
|
|
if not authorization:
|
|
return None
|
|
|
|
(auth_type, authorization) = authorization.split(' ', 1)
|
|
if auth_type != 'Basic':
|
|
return None
|
|
|
|
authorization = base64.b64decode(authorization).decode()
|
|
(username, password) = authorization.split(':', 1)
|
|
return password
|
|
|
|
@property
|
|
def remote_addr(self):
|
|
return self.request.getpeername()[0]
|
|
|
|
def check_password(self, attempt):
|
|
if self.password is None:
|
|
return True
|
|
|
|
if attempt == self.password:
|
|
return True
|
|
|
|
return False
|
|
|
|
def check_has_password(self):
|
|
if self.password is None:
|
|
return True
|
|
|
|
if self.auth_header == self.password:
|
|
return True
|
|
|
|
if self.accepted_tokens is not None and self.auth_cookie in self.accepted_tokens:
|
|
return True
|
|
|
|
if self.accepted_ips is not None and self.remote_addr in self.accepted_ips:
|
|
return True
|
|
|
|
return False
|
|
|
|
def write(self, data):
|
|
if isinstance(data, str):
|
|
data = data.encode('utf-8')
|
|
if isinstance(data, types.GeneratorType):
|
|
for chunk in data:
|
|
self.wfile.write(chunk)
|
|
RATELIMITER.limit(len(chunk))
|
|
else:
|
|
self.wfile.write(data)
|
|
|
|
def do_GET(self):
|
|
if not self.check_has_password():
|
|
self.send_response(401)
|
|
self.end_headers()
|
|
self.write(PASSWORD_PROMPT_HTML.format(goto=self.path))
|
|
return
|
|
|
|
path = url_to_path(self.path)
|
|
if self.send_path_validation_error(path):
|
|
return
|
|
|
|
range_min = None
|
|
range_max = None
|
|
|
|
status_code = 200
|
|
headers = {}
|
|
|
|
if path.is_file:
|
|
file_size = path.size
|
|
if 'range' in self.headers:
|
|
desired_range = self.headers['range']
|
|
desired_range = desired_range.lower()
|
|
desired_range = desired_range.split('bytes=')[-1]
|
|
|
|
helper = lambda x: int(x) if x and x.isdigit() else None
|
|
if '-' in desired_range:
|
|
(desired_min, desired_max) = desired_range.split('-')
|
|
#print('desire', desired_min, desired_max)
|
|
range_min = helper(desired_min)
|
|
range_max = helper(desired_max)
|
|
else:
|
|
range_min = helper(desired_range)
|
|
|
|
if range_min is None:
|
|
range_min = 0
|
|
if range_max is None:
|
|
range_max = file_size
|
|
|
|
# because ranges are 0 indexed
|
|
range_max = min(range_max, file_size - 1)
|
|
range_min = max(range_min, 0)
|
|
|
|
status_code = 206
|
|
range_header = 'bytes {min}-{max}/{outof}'.format(
|
|
min=range_min,
|
|
max=range_max,
|
|
outof=file_size,
|
|
)
|
|
headers['Content-Range'] = range_header
|
|
headers['Accept-Ranges'] = 'bytes'
|
|
content_length = (range_max - range_min) + 1
|
|
|
|
else:
|
|
content_length = file_size
|
|
|
|
headers['Content-length'] = content_length
|
|
|
|
if path.is_file:
|
|
headers['Content-type'] = mimetypes.guess_type(path.absolute_path)[0]
|
|
response = read_filebytes(path, range_min=range_min, range_max=range_max)
|
|
|
|
elif path.is_dir:
|
|
headers['Content-type'] = 'text/html'
|
|
response = generate_opendir(path)
|
|
response = response.encode('utf-8')
|
|
|
|
elif self.path.endswith('.zip'):
|
|
path = url_to_path(self.path.rsplit('.zip', 1)[0])
|
|
headers['Content-type'] = 'application/octet-stream'
|
|
download_as = urllib.parse.quote(path.basename)
|
|
download_as += '.zip'
|
|
headers['Content-Disposition'] = f'attachment; filename*=UTF-8\'\'{download_as}'
|
|
response = zip_directory(path)
|
|
response = iter(response)
|
|
# response = (print(chunk) or chunk for chunk in response)
|
|
|
|
else:
|
|
status_code = 404
|
|
self.send_error(status_code)
|
|
response = bytes()
|
|
|
|
self.send_response(status_code)
|
|
for (key, value) in headers.items():
|
|
self.send_header(key, value)
|
|
|
|
self.end_headers()
|
|
self.write(response)
|
|
|
|
def do_HEAD(self):
|
|
if not self.check_has_password():
|
|
self.send_response(401)
|
|
self.end_headers()
|
|
return
|
|
|
|
path = url_to_path(self.path)
|
|
if self.send_path_validation_error(path):
|
|
return
|
|
|
|
status_code = 200
|
|
self.send_response(status_code)
|
|
|
|
if path.is_dir:
|
|
mime = 'text/html'
|
|
else:
|
|
mime = mimetypes.guess_type(path.absolute_path)[0]
|
|
self.send_header('Content-length', path.size)
|
|
|
|
if mime is not None:
|
|
self.send_header('Content-type', mime)
|
|
|
|
self.end_headers()
|
|
|
|
def do_POST(self):
|
|
(ctype, pdict) = cgi.parse_header(self.headers.get('content-type'))
|
|
if ctype == 'multipart/form-data':
|
|
form = cgi.parse_multipart(self.rfile, pdict)
|
|
elif ctype == 'application/x-www-form-urlencoded':
|
|
length = int(self.headers.get('content-length'))
|
|
form = urllib.parse.parse_qs(self.rfile.read(length), keep_blank_values=1)
|
|
else:
|
|
form = {}
|
|
|
|
if self.path == '/password':
|
|
attempt = form.get(b'password')[0].decode('utf-8')
|
|
goto = form.get(b'goto')[0].decode('utf-8')
|
|
if self.check_password(attempt):
|
|
self.send_response(302)
|
|
|
|
if self.accepted_tokens is not None:
|
|
cookie = http.cookies.SimpleCookie()
|
|
token = random_hex(32)
|
|
cookie[TOKEN_COOKIE_NAME] = token
|
|
self.accepted_tokens.add(token)
|
|
self.send_header('Set-Cookie', cookie.output(header='', sep=''))
|
|
if self.accepted_ips is not None:
|
|
self.accepted_ips.add(self.remote_addr)
|
|
|
|
self.send_header('Location', goto)
|
|
else:
|
|
self.send_response(401)
|
|
elif not self.check_has_password():
|
|
self.send_response(401)
|
|
self.end_headers()
|
|
return
|
|
else:
|
|
self.send_response(400)
|
|
self.end_headers()
|
|
|
|
def send_path_validation_error(self, path):
|
|
if not allowed(path):
|
|
self.send_error(403, 'Stop that!')
|
|
return True
|
|
return False
|
|
|
|
class SimpleServer:
|
|
def __init__(self, port, password, authorize_by_ip):
|
|
self.port = port
|
|
self.password = password
|
|
self.authorize_by_ip = authorize_by_ip
|
|
if authorize_by_ip:
|
|
self.accepted_ips = set()
|
|
self.accepted_tokens = None
|
|
else:
|
|
self.accepted_tokens = set()
|
|
self.accepted_ips = None
|
|
|
|
def make_request_handler(self, *args, **kwargs):
|
|
return RequestHandler(
|
|
password=self.password,
|
|
accepted_tokens=self.accepted_tokens,
|
|
accepted_ips=self.accepted_ips,
|
|
*args,
|
|
**kwargs,
|
|
)
|
|
|
|
def start(self):
|
|
server = http.server.ThreadingHTTPServer(('0.0.0.0', self.port), self.make_request_handler)
|
|
print(f'Server starting on {self.port}')
|
|
try:
|
|
server.serve_forever()
|
|
except KeyboardInterrupt:
|
|
print('Goodbye.')
|
|
server.shutdown()
|
|
|
|
|
|
# HELPERS ##########################################################################################
|
|
|
|
def allowed(path):
|
|
return path == ROOT_DIRECTORY or path in ROOT_DIRECTORY
|
|
|
|
def atag(path, display_name=None):
|
|
path.correct_case()
|
|
if display_name is None:
|
|
display_name = path.basename
|
|
|
|
if path.is_dir:
|
|
# Folder emoji
|
|
icon = '\U0001F4C1'
|
|
else:
|
|
# Diamond emoji
|
|
#icon = '\U0001F48E'
|
|
icon = '\U0001F381'
|
|
|
|
#print('anchor', path)
|
|
if display_name.endswith('.placeholder'):
|
|
a = '<a>{icon} {display}</a>'
|
|
else:
|
|
a = '<a href="{full}">{icon} {display}</a>'
|
|
a = a.format(
|
|
full=path_to_url(path),
|
|
icon=icon,
|
|
display=display_name,
|
|
)
|
|
return a
|
|
|
|
def generate_opendir(path):
|
|
#print('Listdir:', path)
|
|
|
|
# This places directories above files, each ordered alphabetically
|
|
try:
|
|
items = path.listdir()
|
|
except FileNotFoundError:
|
|
items = []
|
|
|
|
directories = []
|
|
files = []
|
|
|
|
for item in sorted(items, key=lambda p: p.basename.lower()):
|
|
if item.is_dir:
|
|
directories.append(item)
|
|
else:
|
|
if item.basename.lower() == 'thumbs.db':
|
|
continue
|
|
if item.basename.lower() == 'desktop.ini':
|
|
continue
|
|
files.append(item)
|
|
|
|
items = directories + files
|
|
table_rows = []
|
|
|
|
shaded = False
|
|
|
|
if path.absolute_path == ROOT_DIRECTORY.absolute_path:
|
|
# This is different than a permission check, we're seeing if they're
|
|
# actually at the top, in which case they don't need an up button.
|
|
entry = table_row(path, display_name='.', shaded=shaded)
|
|
table_rows.append(entry)
|
|
shaded = not shaded
|
|
else:
|
|
entry = table_row(path.parent, display_name='up', shaded=shaded)
|
|
table_rows.append(entry)
|
|
shaded = not shaded
|
|
|
|
for item in items:
|
|
entry = table_row(item, shaded=shaded)
|
|
table_rows.append(entry)
|
|
shaded = not shaded
|
|
|
|
if len(items) > 0:
|
|
entry = table_row(path.replace_extension('.zip'), display_name='zip', shaded=shaded)
|
|
shaded = not shaded
|
|
table_rows.append(entry)
|
|
|
|
table_rows = '\n'.join(table_rows)
|
|
text = OPENDIR_TEMPLATE.format(table_rows=table_rows)
|
|
return text
|
|
|
|
def generate_random_filename(original_filename='', length=8):
|
|
import random
|
|
bits = length * 44
|
|
bits = random.getrandbits(bits)
|
|
identifier = '{:x}'.format(bits).rjust(length, '0')
|
|
return identifier
|
|
|
|
def random_hex(length=12):
|
|
randbytes = os.urandom(math.ceil(length / 2))
|
|
token = ''.join('{:02x}'.format(x) for x in randbytes)
|
|
token = token[:length]
|
|
return token
|
|
|
|
def read_filebytes(path, range_min=None, range_max=None):
|
|
#print(path)
|
|
if range_min is None:
|
|
range_min = 0
|
|
|
|
if range_max is None:
|
|
range_max = path.size
|
|
|
|
range_span = range_max - range_min
|
|
|
|
#print('read span', range_min, range_max, range_span)
|
|
f = path.open('rb')
|
|
f.seek(range_min)
|
|
sent_amount = 0
|
|
while sent_amount < range_span:
|
|
chunk = f.read(FILE_READ_CHUNK)
|
|
if len(chunk) == 0:
|
|
break
|
|
|
|
yield chunk
|
|
sent_amount += len(chunk)
|
|
|
|
#print('I read', len(fr))
|
|
f.close()
|
|
|
|
def table_row(path, display_name=None, shaded=False):
|
|
form = '<tr style="background-color:#{bg}"><td style="">{anchor}</td><td>{size}</td></tr>'
|
|
if path.is_file:
|
|
size = bytestring.bytestring(path.size)
|
|
else:
|
|
size = ''
|
|
|
|
bg = 'ddd' if shaded else 'fff'
|
|
|
|
anchor = atag(path, display_name=display_name)
|
|
|
|
row = form.format(
|
|
bg=bg,
|
|
anchor=anchor,
|
|
size=size,
|
|
)
|
|
return row
|
|
|
|
def path_to_url(path):
|
|
url = path.relative_to(ROOT_DIRECTORY, simple=True)
|
|
url = url.replace(os.sep, '/')
|
|
url = '/' + url
|
|
url = urllib.parse.quote(url)
|
|
return url
|
|
|
|
def url_to_path(path):
|
|
path = urllib.parse.unquote(path)
|
|
path = path.strip('/')
|
|
return pathclass.Path(path)
|
|
|
|
def zip_directory(path):
|
|
zipfile = zipstream.ZipFile(mode='w', compression=zipstream.ZIP_STORED)
|
|
|
|
for item in path.walk():
|
|
if item.is_dir:
|
|
continue
|
|
arcname = item.relative_to(path).lstrip('.' + os.sep)
|
|
zipfile.write(filename=item.absolute_path, arcname=arcname)
|
|
|
|
return zipfile
|
|
|
|
# COMMAND LINE ###################################################################################################
|
|
|
|
DOCSTRING = '''
|
|
simpleserver
|
|
============
|
|
|
|
Run a simple file server from your computer.
|
|
|
|
> simpleserver port <flags>
|
|
|
|
port:
|
|
Port number, an integer.
|
|
|
|
flags:
|
|
--password X:
|
|
A password string. The user will be prompted to enter it before proceeding
|
|
to any URL. A token is stored in a cookie unless authorize_by_ip is used.
|
|
|
|
--authorize_by_ip:
|
|
After the user enters the password, their entire IP becomes authorized for
|
|
all future requests. This reduces security, because a single IP can be home
|
|
to many different people, but increases convenience, because the user can
|
|
use download managers / scripts where adding auth is not convenient.
|
|
'''
|
|
|
|
def simpleserver_argparse(args):
|
|
server = SimpleServer(
|
|
port=args.port,
|
|
password=args.password,
|
|
authorize_by_ip=args.authorize_by_ip,
|
|
)
|
|
server.start()
|
|
|
|
def main(argv):
|
|
parser = argparse.ArgumentParser(description=__doc__)
|
|
|
|
parser.add_argument('port', nargs='?', type=int, default=40000)
|
|
parser.add_argument('--password', dest='password', default=None)
|
|
parser.add_argument('--authorize_by_ip', '--authorize-by-ip', dest='authorize_by_ip', action='store_true')
|
|
parser.set_defaults(func=simpleserver_argparse)
|
|
|
|
return betterhelp.single_main(argv, parser, DOCSTRING)
|
|
|
|
if __name__ == '__main__':
|
|
raise SystemExit(main(sys.argv[1:]))
|