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#!@python@/bin/python
from os import environ
from os.path import expanduser
import socket
import ssl
import shlex
from sys import argv, stdin, stdout, exit
from multiprocessing import Process
from select import select
from io import BytesIO
import subprocess
from time import sleep
import logging
logger = logging.getLogger('notmuch-tcp-server')
logger.setLevel(logging.DEBUG)
lh = logging.StreamHandler()
lh.setLevel(logging.DEBUG)
lh.setFormatter(logging.Formatter( fmt = '{name} {module} {lineno} {levelname}: {message}', style = '{' ))
logger.addHandler(lh)
port = environ.get('NOTMUCH_TCP')
host = environ.get('NOTMUCH_HOST')
hostname = socket.gethostname()
if port is None:
port = 2010
if host is None:
host = "odin.asgard.yggdrasil"
sslcontext = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
sslcontext.load_verify_locations(cafile = expanduser('~/.notmuch-tcp/ca.pem'))
sslcontext.load_cert_chain(certfile = expanduser(f"~/.notmuch-tcp/{hostname}.pem"), keyfile = expanduser(f"~/.notmuch-tcp/{hostname}.key"))
s = None
for res in socket.getaddrinfo(host, int(port), socket.AF_UNSPEC, socket.SOCK_STREAM, 0, socket.AI_PASSIVE):
af, socktype, proto, canonname, sa = res
try:
s = socket.socket(af, socktype, proto)
except OSError as msg:
logger.error(f"Could not create socket: {msg}")
s = None
continue
try:
s.bind(sa)
s.listen()
except OSError as msg:
logger.error(f"Could not bind socket: {msg}")
s.close()
s = None
continue
break
if s is None:
logger.error('Could not open any sockets')
exit(1)
with s as sock:
with sslcontext.wrap_socket(sock, server_side = True) as ssock:
while True:
logger.debug('waiting...')
conn = None
try:
conn, client_addr = ssock.accept()
client_host, client_port = client_addr
logger.info(f"Connected: {client_host}:{client_port}")
with BytesIO() as buffer:
while True:
logger.debug("Reading arguments...")
resp = conn.recv(256)
buffer.write(resp)
buffer.seek(0)
start_index = 0
for line in buffer:
if line[-1:] != b"\n":
break
start_index += len(line)
escaped_args = line[:-1].decode()
break
if start_index:
buffer.seek(start_index)
remaining = buffer.read()
buffer.truncate(0)
buffer.seek(0)
buffer.write(remaining)
break
else:
buffer.seek(0, 2)
logger.info(f"Arguments: {escaped_args}")
sproc = subprocess.Popen(["notmuch"] + shlex.split(escaped_args), shell = False, stdin = subprocess.PIPE, stdout = subprocess.PIPE)
def send_stdout():
while True:
to_send = sproc.stdout.read(256)
logger.debug(f"Sending: {to_send}")
if to_send:
conn.sendall(to_send)
else:
logger.debug(f"Done sending")
break
def recv_stdin():
remaining = buffer.read()
logger.debug(f"Received (buffered): {remaining}")
sproc.stdin.write(remaining)
while True:
logger.debug("Waiting on input...")
ready = select([conn], [], [], 5)
if ready[0]:
resp = conn.recv(256)
logger.debug(f"Received: {resp}")
if len(resp) <= 0:
break
sproc.stdin.write(resp)
else:
break
logger.debug(f"Done receiving")
sproc.stdin.close()
sleep(5)
sproc.kill()
send = Process(target = send_stdout)
recv = Process(target = recv_stdin)
send.start()
recv.start()
sproc_res = sproc.wait()
logger.info(f"Subprocess result: {sproc_res}")
send.join()
recv.terminate()
logger.debug(f"Handled I/O")
finally:
if conn is not None:
conn.close()
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