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#!/usr/bin/python3 -OO
# Copyright 2007-2021 The SABnzbd-Team <team@sabnzbd.org>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
"""
tests.sabnews - Fake newsserver to use in end-to-end testing
Run sabnews.py -h for parameters!
"""
import argparse
import asyncio
import logging
import os
import re
import time
from random import randint
import sabyenc3
logging.getLogger().setLevel(logging.INFO)
# Expecting the following message-id:
# ARTICLE <file=folder/filename.mkv|part=4|start=5000|size=5000>\r\n
ARTICLE_INFO = re.compile(
b"^(ARTICLE|BODY) (?P<message_id><file=(?P<file>.*)\\|part=(?P<part>\\d+)\\|start=(?P<start>\\d+)\\|size=(?P<size>\\d+)>)\\r\\n$",
re.MULTILINE,
)
YENC_ESCAPE = [0x00, 0x0A, 0x0D, ord("="), ord(".")]
class NewsServerProtocol(asyncio.Protocol):
def __init__(self):
self.transport = None
self.connected = False
self.in_article = False
super().__init__()
def connection_made(self, transport):
logging.info("Connection from %s", transport.get_extra_info("peername"))
self.transport = transport
self.connected = True
self.transport.write(b"200 Welcome (SABNews)\r\n")
def data_received(self, message):
logging.debug("Data received: %s", message.strip())
# Handle basic commands
if message.startswith(b"QUIT"):
self.close_connection()
elif message.startswith((b"ARTICLE", b"BODY")):
parsed_message = ARTICLE_INFO.search(message)
self.serve_article(parsed_message)
# self.transport.write(data)
def serve_article(self, parsed_message):
# Check if we parsed everything
try:
message_id = parsed_message.group("message_id")
file = parsed_message.group("file").decode("utf-8")
file_base = os.path.basename(file)
part = int(parsed_message.group("part"))
start = int(parsed_message.group("start"))
size = int(parsed_message.group("size"))
except (AttributeError, ValueError):
logging.warning("Can't parse article information")
self.transport.write(b"430 No Such Article Found (bad message-id)\r\n")
return
# Check if file exists
if not os.path.exists(file):
logging.warning("File not found: %s", file)
self.transport.write(b"430 No Such Article Found (no file on disk)\r\n")
return
# Check if sizes are valid
file_size = os.path.getsize(file)
if start + size > file_size:
logging.warning("Invalid start/size attributes")
self.transport.write(b"430 No Such Article Found (invalid start/size attributes)\r\n")
return
logging.debug("Serving %s" % message_id)
# File is found, send headers
self.transport.write(b"222 0 %s\r\n" % message_id)
self.transport.write(b"Message-ID: %s\r\n" % message_id)
self.transport.write(b'Subject: "%s"\r\n\r\n' % file_base.encode("utf-8"))
# Write yEnc headers
self.transport.write(
b"=ybegin part=%d line=128 size=%d name=%s\r\n" % (part, file_size, file_base.encode("utf-8"))
)
self.transport.write(b"=ypart begin=%d end=%d\r\n" % (start + 1, start + size))
with open(file, "rb") as inp_file:
inp_file.seek(start)
inp_buffer = inp_file.read(size)
# Encode data
output_string, crc = sabyenc3.encode(inp_buffer)
self.transport.write(output_string)
# Write footer
self.transport.write(b"\r\n=yend size=%d part=%d pcrc32=%08x\r\n" % (size, part, crc))
self.transport.write(b".\r\n")
def close_connection(self):
logging.debug("Closing connection")
self.transport.write(b"205 Connection closing\r\n")
self.transport.close()
async def serve_sabnews(hostname, port):
# Start server
logging.info("Starting SABNews on %s:%d", hostname, port)
# Needed for Python 3.5 support!
loop = asyncio.get_event_loop()
server = await loop.create_server(lambda: NewsServerProtocol(), hostname, port)
return server
def create_nzb(nzb_file=None, nzb_dir=None, metadata=None):
article_size = 500000
files_for_nzb = []
output_file = ""
# Either use directory or single file
if nzb_dir:
if not os.path.exists(nzb_dir) or not os.path.isdir(nzb_dir):
raise NotADirectoryError("%s is not a valid directory" % nzb_dir)
# List all files
files_for_nzb = [os.path.join(nzb_dir, fl) for fl in os.listdir(nzb_dir)]
files_for_nzb = [fl for fl in files_for_nzb if os.path.isfile(fl)]
output_file = os.path.join(nzb_dir, os.path.basename(os.path.normpath(nzb_dir)) + ".nzb")
if nzb_file:
if not os.path.exists(nzb_file) or not os.path.isfile(nzb_file):
raise FileNotFoundError("Cannot find %s or it is not a file" % nzb_file)
files_for_nzb = [nzb_file]
output_file = os.path.splitext(nzb_file)[0] + ".nzb"
if not files_for_nzb:
raise RuntimeError("No files found to include in NZB")
# Let's write a file!
with open(output_file, "w", encoding="utf-8") as nzb:
nzb.write('<?xml version="1.0" encoding="UTF-8"?>\n')
nzb.write('<!DOCTYPE nzb PUBLIC "-//newzBin//DTD NZB 1.0//EN" "http://www.newzbin.com/DTD/nzb/nzb-1.0.dtd">\n')
nzb.write('<nzb xmlns="http://www.newzbin.com/DTD/2003/nzb">\n')
if metadata:
nzb.write("<head>\n")
for meta_name, meta_value in metadata.items():
nzb.write('<meta type="%s">%s</meta>\n' % (meta_name, meta_value))
nzb.write("</head>\n")
nzb_time = time.time() - randint(0, int(time.time() - 746863566))
for fl in files_for_nzb:
nzb.write('<file poster="SABNews" date="%d" subject="&quot;%s&quot;">\n' % (nzb_time, os.path.basename(fl)))
nzb.write("<groups><group>alt.binaries.test</group></groups>\n")
nzb.write("<segments>\n")
# Create segments
file_size = os.path.getsize(fl)
for seg_nr, seg_start in enumerate(range(0, file_size, article_size), 1):
segement_size = min(article_size, file_size - seg_start)
nzb.write(
'<segment number="%d" bytes="%d">file=%s|part=%s|start=%d|size=%d</segment>\n'
% (seg_nr, segement_size, fl, seg_nr, seg_start, segement_size)
)
nzb.write("</segments>\n")
nzb.write("</file>\n")
nzb.write("</nzb>\n")
logging.info("NZB saved to %s" % output_file)
return output_file
def main():
parser = argparse.ArgumentParser()
parser.add_argument("-s", help="Hostname", dest="hostname", default="127.0.0.1")
parser.add_argument("-p", help="Port", dest="port", type=int, default=8888)
parser.add_argument("--nzbfile", help="Create NZB of specified file", dest="nzb_file", metavar="FILE")
parser.add_argument("--nzbdir", help="Create NZB for files in specified directory", dest="nzb_dir", metavar="DIR")
args = parser.parse_args()
# Serve if we are not creating NZB's
if not args.nzb_file and not args.nzb_dir:
loop = asyncio.get_event_loop()
loop.run_until_complete(serve_sabnews(args.hostname, args.port))
loop.run_forever()
else:
create_nzb(args.nzb_file, args.nzb_dir)
if __name__ == "__main__":
main()