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pywwwget_combined_refactored_engines.py
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7487 lines (6558 loc) · 255 KB
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#!/usr/bin/env python3
import os
import io
import re
import sys
import json
import getpass
import random
import platform
import socket
import shutil
import time
import struct
import hmac
import hashlib
import tempfile
import zlib
import gzip
import ssl
import mimetypes
try:
mimetypes.init()
except Exception:
pass
import base64
import threading
try:
from mimetypes import guess_type
except ImportError:
guess_type = None
try:
from secrets import randbits
except Exception:
def randbits(k):
if k < 0:
raise ValueError('number of bits must be non-negative')
num_bytes = (k + 7) // 8
raw_bytes = os.urandom(num_bytes)
value = int.from_bytes(raw_bytes, 'big')
return value >> (num_bytes * 8 - k)
import http.cookiejar as cookielib
from http.cookies import SimpleCookie
defcert = None
try:
import certifi
defcert = certifi.where()
except ImportError:
pass
from io import BytesIO
from urllib.parse import quote_from_bytes, unquote_to_bytes, urlencode
from urllib.request import install_opener, build_opener
_TEXT_MIME_DEFAULT = 'text/plain; charset=utf-8'
_BIN_MIME_DEFAULT = 'application/octet-stream'
def get_readable_size(bytes, precision=1, unit="IEC"):
unit = unit.upper()
if(unit != "IEC" and unit != "SI"):
unit = "IEC"
if(unit == "IEC"):
units = [" B", " KiB", " MiB", " GiB", " TiB", " PiB", " EiB", " ZiB"]
unitswos = ["B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB"]
unitsize = 1024.0
if(unit == "SI"):
units = [" B", " kB", " MB", " GB", " TB", " PB", " EB", " ZB"]
unitswos = ["B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB"]
unitsize = 1000.0
return_val = {}
orgbytes = bytes
for unit in units:
if abs(bytes) < unitsize:
strformat = "%3."+str(precision)+"f%s"
pre_return_val = (strformat % (bytes, unit))
pre_return_val = re.sub(
r"([0]+) ([A-Za-z]+)", r" \2", pre_return_val)
pre_return_val = re.sub(r"\. ([A-Za-z]+)", r" \1", pre_return_val)
alt_return_val = pre_return_val.split()
return_val = {'Bytes': orgbytes, 'ReadableWithSuffix': pre_return_val,
'ReadableWithoutSuffix': alt_return_val[0], 'ReadableSuffix': alt_return_val[1]}
return return_val
bytes /= unitsize
strformat = "%."+str(precision)+"f%s"
pre_return_val = (strformat % (bytes, "YiB"))
pre_return_val = re.sub(r"([0]+) ([A-Za-z]+)", r" \2", pre_return_val)
pre_return_val = re.sub(r"\. ([A-Za-z]+)", r" \1", pre_return_val)
alt_return_val = pre_return_val.split()
return_val = {'Bytes': orgbytes, 'ReadableWithSuffix': pre_return_val,
'ReadableWithoutSuffix': alt_return_val[0], 'ReadableSuffix': alt_return_val[1]}
return return_val
def get_readable_size_from_file(infile, precision=1, unit="IEC", usehashes=False, usehashtypes="md5,sha1"):
unit = unit.upper()
usehashtypes = usehashtypes.lower()
getfilesize = os.path.getsize(infile)
return_val = get_readable_size(getfilesize, precision, unit)
if(usehashes):
hashtypelist = usehashtypes.split(",")
openfile = open(infile, "rb")
filecontents = openfile.read()
openfile.close()
listnumcount = 0
listnumend = len(hashtypelist)
while(listnumcount < listnumend):
hashtypelistlow = hashtypelist[listnumcount].strip()
hashtypelistup = hashtypelistlow.upper()
filehash = hashlib.new(hashtypelistup)
filehash.update(filecontents)
filegethash = filehash.hexdigest()
return_val.update({hashtypelistup: filegethash})
listnumcount += 1
return return_val
def _is_probably_text(data_bytes):
if not data_bytes:
return True
if b'\x00' in data_bytes:
return False
try:
decoded = data_bytes.decode('utf-8')
except Exception:
return False
control = 0
for ch in decoded:
o = ord(ch)
if (o < 32 and ch not in u'\t\n\r') or o == 127:
control += 1
return control <= max(1, len(decoded) // 200)
def data_url_encode(fileobj,
mime=None,
is_text=None,
charset='utf-8',
base64_encode=None):
raw = fileobj.read()
if isinstance(raw, text_type):
raw_bytes = raw.encode(charset)
detected_text = True
else:
raw_bytes = raw
detected_text = _is_probably_text(raw_bytes)
if is_text is None:
is_text = detected_text
if mime is None:
mime = _TEXT_MIME_DEFAULT if is_text else _BIN_MIME_DEFAULT
else:
mlow = mime.lower()
if mlow.startswith('text/') and 'charset=' not in mlow:
mime = mime + '; charset=' + charset
if base64_encode is None:
base64_encode = not is_text
if base64_encode:
b64 = base64.b64encode(raw_bytes)
if not isinstance(b64, text_type):
b64 = b64.decode('ascii')
return u'data:{0};base64,{1}'.format(mime, b64)
else:
encoded = quote_from_bytes(raw_bytes, safe="!$&'()*+,;=:@-._~")
if not isinstance(encoded, text_type):
encoded = encoded.decode('ascii')
return u'data:{0},{1}'.format(mime, encoded)
_DATA_URL_RE = re.compile(r'^data:(?P<meta>[^,]*?),(?P<data>.*)$', re.DOTALL)
def data_url_decode(data_url):
if not isinstance(data_url, text_type):
try:
data_url = data_url.decode('utf-8')
except Exception:
data_url = data_url.decode('ascii')
m = _DATA_URL_RE.match(data_url)
if not m:
raise ValueError('Not a valid data: URL')
meta = m.group('meta')
data_part = m.group('data')
meta_parts = [p for p in meta.split(';') if p] if meta else []
is_base64 = False
mime = None
if meta_parts:
if '/' in meta_parts[0]:
mime = meta_parts[0]
rest = meta_parts[1:]
else:
rest = meta_parts
for p in rest:
if p.lower() == 'base64':
is_base64 = True
else:
if mime is None:
mime = p
else:
mime = mime + ';' + p
if is_base64:
try:
decoded_bytes = base64.b64decode(data_part.encode('ascii'))
except Exception:
cleaned = ''.join(data_part.split())
decoded_bytes = base64.b64decode(cleaned.encode('ascii'))
else:
decoded_bytes = unquote_to_bytes(data_part)
if isinstance(decoded_bytes, text_type):
decoded_bytes = decoded_bytes.encode('latin-1')
return MkTempFile(decoded_bytes), mime, is_base64
from urllib.parse import urlparse, urlunparse, parse_qs, unquote
from urllib.request import (
Request,
build_opener,
HTTPBasicAuthHandler,
HTTPCookieProcessor,
HTTPSHandler,
HTTPPasswordMgrWithDefaultRealm,
)
from urllib.error import URLError, HTTPError
from http.client import HTTPException
from http.server import BaseHTTPRequestHandler, HTTPServer
import socketserver as _socketserver
haverequests = False
try:
import requests
haverequests = True
except Exception:
pass
haveurllib3 = False
try:
import urllib3
haveurllib3 = True
except Exception:
pass
havehttpx = False
try:
import httpx
havehttpx = True
except Exception:
pass
havehttpcore = False
try:
import httpcore
havehttpcore = True
except ImportError:
pass
havemechanize = False
try:
import mechanize
havemechanize = True
except Exception:
pass
havepycurl = False
try:
import pycurl
havepycurl = True
except ImportError:
pass
haveparamiko = False
try:
import paramiko
haveparamiko = True
except Exception:
pass
havepysftp = False
try:
import pysftp
havepysftp = True
except Exception:
pass
ftpssl = True
try:
from ftplib import FTP, FTP_TLS, all_errors
except Exception:
ftpssl = False
from ftplib import FTP, all_errors
__use_pysftp__ = False
if(not havepysftp):
__use_pysftp__ = False
__use_http_lib__ = "httpx"
if(__use_http_lib__ == "httpx" and haverequests and not havehttpx):
__use_http_lib__ = "requests"
if(__use_http_lib__ == "requests" and havehttpx and not haverequests):
__use_http_lib__ = "httpx"
if((__use_http_lib__ == "httpx" or __use_http_lib__ == "requests") and not havehttpx and not haverequests):
__use_http_lib__ = "urllib"
__program_name__ = "PyNeoWWW-Get"
__program_alt_name__ = "PyWWWGet"
__program_small_name__ = "wwwget"
__project__ = __program_name__
__project_url__ = "https://github.com/GameMaker2k/PyNeoWWW-Get"
__version_info__ = (2, 2, 0, "RC 1", 1)
__version_date_info__ = (2026, 1, 23, "RC 1", 1)
__version_date__ = str(__version_date_info__[0])+"."+str(__version_date_info__[
1]).zfill(2)+"."+str(__version_date_info__[2]).zfill(2)
__revision__ = __version_info__[3]
__revision_id__ = "$Id$"
if(__version_info__[4] is not None):
__version_date_plusrc__ = __version_date__ + \
"-"+str(__version_date_info__[4])
if(__version_info__[4] is None):
__version_date_plusrc__ = __version_date__
if(__version_info__[3] is not None):
__version__ = str(__version_info__[0])+"."+str(__version_info__[1])+"."+str(
__version_info__[2])+" "+str(__version_info__[3])
if(__version_info__[3] is None):
__version__ = str(
__version_info__[0])+"."+str(__version_info__[1])+"."+str(__version_info__[2])
PyBitness = platform.architecture()
if(PyBitness == "32bit" or PyBitness == "32"):
PyBitness = "32"
elif(PyBitness == "64bit" or PyBitness == "64"):
PyBitness = "64"
else:
PyBitness = "32"
geturls_cj = cookielib.CookieJar()
geturls_ua_pywwwget_python = "Mozilla/5.0 (compatible; {proname}/{prover}; +{prourl})".format(
proname=__project__, prover=__version__, prourl=__project_url__)
if(platform.python_implementation() != ""):
py_implementation = platform.python_implementation()
if(platform.python_implementation() == ""):
py_implementation = "Python"
geturls_ua_pywwwget_python_alt = "Mozilla/5.0 ({osver}; {archtype}; +{prourl}) {pyimp}/{pyver} (KHTML, like Gecko) {proname}/{prover}".format(osver=platform.system(
)+" "+platform.release(), archtype=platform.machine(), prourl=__project_url__, pyimp=py_implementation, pyver=platform.python_version(), proname=__project__, prover=__version__)
geturls_ua_googlebot_google = "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"
geturls_ua_googlebot_google_old = "Googlebot/2.1 (+http://www.google.com/bot.html)"
geturls_headers_pywwwget_python = {'Referer': "http://google.com/", 'User-Agent': geturls_ua_pywwwget_python, 'Accept-Encoding': "none", 'Accept-Language': "en-US,en;q=0.8,en-CA,en-GB;q=0.6", 'Accept-Charset': "ISO-8859-1,ISO-8859-15,utf-8;q=0.7,*;q=0.7", 'Accept': "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8", 'Connection': "close",
'SEC-CH-UA': "\""+__project__+"\";v=\""+str(__version__)+"\", \"Not;A=Brand\";v=\"8\", \""+py_implementation+"\";v=\""+str(platform.release())+"\"", 'SEC-CH-UA-FULL-VERSION': str(__version__), 'SEC-CH-UA-PLATFORM': ""+py_implementation+"", 'SEC-CH-UA-ARCH': ""+platform.machine()+"", 'SEC-CH-UA-PLATFORM-VERSION': str(__version__), 'SEC-CH-UA-BITNESS': str(PyBitness)}
geturls_headers_pywwwget_python_alt = {'Referer': "http://google.com/", 'User-Agent': geturls_ua_pywwwget_python_alt, 'Accept-Encoding': "none", 'Accept-Language': "en-US,en;q=0.8,en-CA,en-GB;q=0.6", 'Accept-Charset': "ISO-8859-1,ISO-8859-15,utf-8;q=0.7,*;q=0.7", 'Accept': "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8", 'Connection': "close",
'SEC-CH-UA': "\""+__project__+"\";v=\""+str(__version__)+"\", \"Not;A=Brand\";v=\"8\", \""+py_implementation+"\";v=\""+str(platform.release())+"\"", 'SEC-CH-UA-FULL-VERSION': str(__version__), 'SEC-CH-UA-PLATFORM': ""+py_implementation+"", 'SEC-CH-UA-ARCH': ""+platform.machine()+"", 'SEC-CH-UA-PLATFORM-VERSION': str(__version__), 'SEC-CH-UA-BITNESS': str(PyBitness)}
geturls_headers_googlebot_google = {'Referer': "http://google.com/", 'User-Agent': geturls_ua_googlebot_google, 'Accept-Encoding': "none", 'Accept-Language': "en-US,en;q=0.8,en-CA,en-GB;q=0.6",
'Accept-Charset': "ISO-8859-1,ISO-8859-15,utf-8;q=0.7,*;q=0.7", 'Accept': "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8", 'Connection': "close"}
geturls_headers_googlebot_google_old = {'Referer': "http://google.com/", 'User-Agent': geturls_ua_googlebot_google_old, 'Accept-Encoding': "none", 'Accept-Language': "en-US,en;q=0.8,en-CA,en-GB;q=0.6",
'Accept-Charset': "ISO-8859-1,ISO-8859-15,utf-8;q=0.7,*;q=0.7", 'Accept': "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8", 'Connection': "close"}
def fix_header_names(header_dict):
if(sys.version[0] == "2"):
header_dict = {k.title(): v for k, v in header_dict.items()}
if(sys.version[0] >= "3"):
header_dict = {k.title(): v for k, v in header_dict.items()}
return header_dict
def make_http_headers_from_dict_to_list(headers):
if isinstance(headers, dict):
returnval = []
if(sys.version[0] == "2"):
for headkey, headvalue in headers.items():
returnval.append((headkey, headvalue))
if(sys.version[0] >= "3"):
for headkey, headvalue in headers.items():
returnval.append((headkey, headvalue))
elif isinstance(headers, list):
returnval = headers
else:
returnval = False
return returnval
def make_http_headers_from_dict_to_pycurl(headers):
if isinstance(headers, dict):
returnval = []
if(sys.version[0] == "2"):
for headkey, headvalue in headers.items():
returnval.append(headkey+": "+headvalue)
if(sys.version[0] >= "3"):
for headkey, headvalue in headers.items():
returnval.append(headkey+": "+headvalue)
elif isinstance(headers, list):
returnval = headers
else:
returnval = False
return returnval
def make_http_headers_from_pycurl_to_dict(headers):
header_dict = {}
headers = headers.strip().split('\r\n')
for header in headers:
parts = header.split(': ', 1)
if(len(parts) == 2):
key, value = parts
header_dict[key.title()] = value
return header_dict
def make_http_headers_from_list_to_dict(headers):
if isinstance(headers, list):
returnval = {}
mli = 0
mlil = len(headers)
while(mli < mlil):
returnval.update({headers[mli][0]: headers[mli][1]})
mli = mli + 1
elif isinstance(headers, dict):
returnval = headers
else:
returnval = False
return returnval
__use_inmem__ = True
__use_memfd__ = True
__use_spoolfile__ = False
__use_spooldir__ = tempfile.gettempdir()
BYTES_PER_KiB = 1024
BYTES_PER_MiB = 1024 * BYTES_PER_KiB
DEFAULT_SPOOL_MAX = 4 * BYTES_PER_MiB
__spoolfile_size__ = DEFAULT_SPOOL_MAX
DEFAULT_BUFFER_MAX = 256 * BYTES_PER_KiB
__filebuff_size__ = DEFAULT_BUFFER_MAX
text_type = str
binary_types = (bytes, bytearray, memoryview)
def _best_lan_ip():
"""Attempt to find the best LAN IP address."""
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
try:
s.connect(("8.8.8.8", 80))
return s.getsockname()[0]
except Exception:
try:
return socket.gethostbyname(socket.gethostname())
except Exception:
return "127.0.0.1"
finally:
s.close()
def _listen_urls(scheme, bind_host, port, path, query=""):
if not path:
path = "/"
if not path.startswith("/"):
path = "/" + path
q = ""
if query:
q = "?" + query.lstrip("?")
urls = []
if not bind_host or bind_host == "0.0.0.0":
urls.append("%s://127.0.0.1:%d%s%s" % (scheme, port, path, q))
ip = _best_lan_ip()
if ip and ip != "127.0.0.1":
urls.append("%s://%s:%d%s%s" % (scheme, ip, port, path, q))
else:
urls.append("%s://%s:%d%s%s" % (scheme, bind_host, port, path, q))
return urls
def _parse_kv_headers(qs, prefix="hdr_"):
out = {}
for k in qs.keys():
if k.startswith(prefix):
hk = k[len(prefix):].replace("_", "-")
try:
out[hk] = qs.get(k)[0]
except Exception:
try:
out[hk] = qs[k][0]
except Exception:
pass
return out
def _throttle_bps(rate_bps, sent, started):
"""Sleep to enforce approximate bytes/sec rate."""
try:
rate_bps = float(rate_bps)
except Exception:
return
if rate_bps <= 0:
return
elapsed = time.time() - started
if elapsed <= 0:
return
should = float(sent) / rate_bps
if should > elapsed:
time.sleep(should - elapsed)
def MkTempFile(data=None,
inmem=__use_inmem__, usememfd=__use_memfd__,
isbytes=True,
prefix=__program_name__,
delete=True,
encoding="utf-8",
newline=None,
text_errors="strict",
dir=None,
suffix="",
use_spool=__use_spoolfile__,
autoswitch_spool=False,
spool_max=__spoolfile_size__,
spool_dir=__use_spooldir__,
reset_to_start=True,
memfd_name=__program_name__,
memfd_allow_sealing=False,
memfd_flags_extra=0,
on_create=None):
prefix = prefix or ""
suffix = suffix or ""
init = None
if data is not None:
if isbytes:
if isinstance(data, binary_types):
init = bytes(data) if not isinstance(data, bytes) else data
elif isinstance(data, text_type):
init = data.encode(encoding)
else:
raise TypeError("data must be bytes-like for isbytes=True")
else:
if isinstance(data, binary_types):
init = bytes(data).decode(encoding, errors="strict")
elif isinstance(data, text_type):
init = data
else:
raise TypeError("data must be text (str/unicode) for isbytes=False")
init_len = len(init) if (init is not None and isbytes) else None
def _created(fp, kind):
if on_create is not None:
on_create(fp, kind)
def _wrap_text(binary_handle):
return io.TextIOWrapper(binary_handle, encoding=encoding,
newline=newline, errors=text_errors)
if inmem:
if autoswitch_spool and use_spool and init_len is not None and init_len > spool_max:
pass
else:
memfd_create = getattr(os, "memfd_create", None)
if usememfd and isbytes and callable(memfd_create):
name = memfd_name or prefix or "MkTempFile"
flags = 0
if hasattr(os, "MFD_CLOEXEC"):
flags |= os.MFD_CLOEXEC
if memfd_allow_sealing and hasattr(os, "MFD_ALLOW_SEALING"):
flags |= os.MFD_ALLOW_SEALING
if memfd_flags_extra:
flags |= int(memfd_flags_extra)
fd = memfd_create(name, flags)
f = os.fdopen(fd, "w+b")
if init is not None:
f.write(init)
if reset_to_start:
f.seek(0)
_created(f, "memfd")
return f
if isbytes:
f = BytesIO(init if init is not None else b"")
if reset_to_start:
f.seek(0)
_created(f, "bytesio")
return f
else:
f = io.StringIO(init if init is not None else u"")
if reset_to_start:
f.seek(0)
_created(f, "stringio")
return f
if use_spool:
b = tempfile.SpooledTemporaryFile(max_size=spool_max, mode="w+b", dir=spool_dir)
f = b if isbytes else _wrap_text(b)
if init is not None:
f.write(init)
if reset_to_start:
f.seek(0)
_created(f, "spool")
return f
b = tempfile.NamedTemporaryFile(mode="w+b", prefix=prefix, suffix=suffix, dir=dir, delete=delete)
f = b if isbytes else _wrap_text(b)
if init is not None:
f.write(init)
if reset_to_start:
f.seek(0)
_created(f, "disk")
return f
def _hs_token():
try:
import random
return ('%x' % random.getrandbits(64)).encode('ascii')
except Exception:
try:
return ('%x' % (int(time.time()*1000000) ^ os.getpid())).encode('ascii')
except Exception:
return ('%x' % int(time.time()*1000000)).encode('ascii')
def _byte_at(b, i):
v = b[i]
return v if isinstance(v, int) else ord(v)
def _to_bytes(x):
if x is None:
return b""
if isinstance(x, bytes):
return x
try:
return x.encode("utf-8")
except Exception:
return bytes(x)
def _to_text(x):
if x is None:
return u""
if isinstance(x, bytes):
try:
return x.decode("utf-8", "replace")
except Exception:
return x.decode("latin-1", "replace")
return x
def _rand_u64():
return struct.unpack("!Q", os.urandom(8))[0]
def _set_query_param(url, key, value):
try:
up = urlparse(url)
qs = up.query or ""
parts = []
if qs:
for kv in qs.split("&"):
if not kv:
continue
if kv.split("=", 1)[0] != key:
parts.append(kv)
parts.append("%s=%s" % (key, value))
newq = "&".join(parts)
return urlunparse((up.scheme, up.netloc, up.path, up.params, newq, up.fragment))
except Exception:
return url
def _qflag(qs, key, default=False):
v = qs.get(key, [None])[0]
if v is None:
return default
v = _to_text(v).strip().lower()
return v in ("1", "true", "yes", "on", "y")
def _qnum(qs, key, default, cast=int):
v = qs.get(key, [None])[0]
if v is None or v == "":
return default
try:
return cast(v)
except Exception:
try:
return cast(_to_text(v))
except Exception:
return default
def _qstr(qs, key, default=None):
v = qs.get(key, [None])[0]
if v is None:
return default
return _to_text(v)
def _ensure_dir(d):
if not d:
return
if not os.path.isdir(d):
try:
os.makedirs(d)
except Exception:
pass
def _guess_filename(url):
p = urlparse(url)
bn = os.path.basename(p.path or "")
return bn or "download.bin"
def _choose_output_path(fname, overwrite=False, save_dir=None):
if not save_dir:
save_dir = "."
_ensure_dir(save_dir)
base = os.path.join(save_dir, fname)
if overwrite or not os.path.exists(base):
return base
root, ext = os.path.splitext(base)
for i in range(1, 10000):
cand = "%s.%d%s" % (root, i, ext)
if not os.path.exists(cand):
return cand
return base
def _copy_fileobj_to_path(fileobj, path, overwrite=False):
if (not overwrite) and os.path.exists(path):
raise IOError("Refusing to overwrite: %s" % path)
_ensure_dir(os.path.dirname(path) or ".")
with open(path, "wb") as out:
try:
fileobj.seek(0, 0)
except Exception:
pass
shutil.copyfileobj(fileobj, out)
OP_RRQ = 1
OP_WRQ = 2
OP_DATA = 3
OP_ACK = 4
OP_ERROR = 5
BLOCK_SIZE = 512
class TFTPError(Exception):
pass
def _make_rrq(filename, mode=b"octet"):
return struct.pack("!H", OP_RRQ) + _to_bytes(filename) + b"\x00" + _to_bytes(mode) + b"\x00"
def _make_wrq(filename, mode=b"octet"):
return struct.pack("!H", OP_WRQ) + _to_bytes(filename) + b"\x00" + _to_bytes(mode) + b"\x00"
def _make_data(blockno, payload):
return struct.pack("!HH", OP_DATA, blockno) + payload
def _make_ack(blockno):
return struct.pack("!HH", OP_ACK, blockno)
def _parse_packet(pkt):
if len(pkt) < 2:
raise TFTPError("Short packet")
op = struct.unpack("!H", pkt[:2])[0]
return op
def _parse_ack(pkt):
if len(pkt) < 4:
raise TFTPError("Short ACK")
op, blockno = struct.unpack("!HH", pkt[:4])
if op != OP_ACK:
raise TFTPError("Expected ACK, got opcode %d" % op)
return blockno
def _parse_data(pkt):
if len(pkt) < 4:
raise TFTPError("Short DATA")
op, blockno = struct.unpack("!HH", pkt[:4])
if op != OP_DATA:
raise TFTPError("Expected DATA, got opcode %d" % op)
return blockno, pkt[4:]
def _parse_error(pkt):
if len(pkt) < 4:
raise TFTPError("Short ERROR")
op, errcode = struct.unpack("!HH", pkt[:4])
if op != OP_ERROR:
raise TFTPError("Not an ERROR packet")
msg = pkt[4:]
if b"\x00" in msg:
msg = msg.split(b"\x00", 1)[0]
try:
msg = msg.decode("utf-8", "replace")
except Exception:
msg = repr(msg)
raise TFTPError("TFTP ERROR %d: %s" % (errcode, msg))
def _mk_sock(proxy, timeout):
"""
proxy: dict or None
If dict, expected keys:
host, port, username(optional), password(optional)
"""
s = socks.socksocket(socket.AF_INET, socket.SOCK_DGRAM)
s.settimeout(timeout)
if proxy:
s.set_proxy(
proxy_type=socks.SOCKS5,
addr=proxy["host"],
port=int(proxy["port"]),
username=proxy.get("username"),
password=proxy.get("password"),
rdns=True,
)
return s
def tftp_upload(server_host, remote_filename, fileobj,
server_port=69, mode="octet",
proxy=None, timeout=5.0, retries=5):
sock = _mk_sock(proxy, timeout)
try:
wrq = _make_wrq(remote_filename, mode=_to_bytes(mode))
sock.sendto(wrq, (server_host, int(server_port)))
for attempt in range(retries):
try:
pkt, addr = sock.recvfrom(4 + 128)
op = _parse_packet(pkt)
if op == OP_ERROR:
_parse_error(pkt)
if op != OP_ACK:
raise TFTPError("Expected ACK(0), got opcode %d" % op)
ack_block = _parse_ack(pkt)
if ack_block != 0:
raise TFTPError("Expected ACK block 0, got %d" % ack_block)
server_tid = addr
break
except socket.timeout:
sock.sendto(wrq, (server_host, int(server_port)))
else:
raise TFTPError("Timeout waiting for ACK(0)")
blockno = 1
while True:
data = fileobj.read(BLOCK_SIZE)
if data is None:
data = b""
if not isinstance(data, (bytes, bytearray)):
raise TFTPError("fileobj.read() must return bytes")
data_pkt = _make_data(blockno, data)
for attempt in range(retries):
sock.sendto(data_pkt, server_tid)
try:
pkt, addr = sock.recvfrom(4 + 128)
if addr != server_tid:
continue
op = _parse_packet(pkt)
if op == OP_ERROR:
_parse_error(pkt)
ackb = _parse_ack(pkt)
if ackb == blockno:
break
except socket.timeout:
continue
else:
raise TFTPError("Timeout waiting for ACK(%d)" % blockno)
if len(data) < BLOCK_SIZE:
return
blockno = (blockno + 1) & 0xFFFF
if blockno == 0:
raise TFTPError("Block number rollover not supported in this simple implementation.")
finally:
try:
sock.close()
except Exception:
pass
def tftp_download(server_host, remote_filename,
server_port=69, mode="octet",
proxy=None, timeout=5.0, retries=5):
sock = _mk_sock(proxy, timeout)
out = MkTempFile()
rrq = _make_rrq(remote_filename, mode=_to_bytes(mode))
try:
sock.sendto(rrq, (server_host, int(server_port)))
expected = 1
server_tid = None
last_ack = 0
while True:
for attempt in range(retries):
try:
pkt, addr = sock.recvfrom(4 + BLOCK_SIZE + 128)
op = _parse_packet(pkt)
if op == OP_ERROR:
_parse_error(pkt)
if op != OP_DATA:
raise TFTPError("Expected DATA, got opcode %d" % op)
blockno, payload = _parse_data(pkt)
if server_tid is None:
server_tid = addr
if addr != server_tid:
continue
if blockno == expected:
out.write(payload)
ack = _make_ack(blockno)
sock.sendto(ack, server_tid)
last_ack = blockno
if len(payload) < BLOCK_SIZE:
out.seek(0)
return out
expected = (expected + 1) & 0xFFFF
if expected == 0:
raise TFTPError("Block number rollover not supported in this simple implementation.")
break
elif blockno == last_ack:
sock.sendto(_make_ack(blockno), server_tid)
break
else:
sock.sendto(_make_ack(last_ack), server_tid)
break
except socket.timeout:
if server_tid is None:
sock.sendto(rrq, (server_host, int(server_port)))
else:
sock.sendto(_make_ack(last_ack), server_tid)
else:
raise TFTPError("Timeout receiving DATA block %d" % expected)
finally:
try:
sock.close()
except Exception:
pass
def download_file_from_tftp_file(url, timeout=60, returnstats=False):
p = urlparse(url)
if p.scheme != "tftp":
return False
host = p.hostname
port = p.port or 69
user = p.username
pw = p.password
path = p.path or "/"
file_dir = os.path.dirname(path)
start_time = time.time()
socket.setdefaulttimeout(float(timeout))
try:
bio = tftp_download(host, p.path, port, timeout=float(timeout))
fulldatasize = bio.tell()
bio.seek(0, 0)
end_time = time.time()
total_time = end_time - start_time
if(returnstats):
returnval = {'Type': "Buffer", 'Buffer': bio, 'Contentsize': fulldatasize, 'ContentsizeAlt': {'IEC': get_readable_size(fulldatasize, 2, "IEC"), 'SI': get_readable_size(fulldatasize, 2, "SI")}, 'Headers': None, 'Version': None, 'Method': None, 'HeadersSent': None, 'URL': url, 'Code': None, 'RequestTime': {'StartTime': start_time, 'EndTime': end_time, 'TotalTime': total_time}, 'FTPLib': 'pyftp'}
else: