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jetforce/jetforce.py

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#!/usr/bin/env python3
"""
Jetforce, an experimental Gemini server.
Overview
--------
GeminiServer:
An asynchronous TCP server built on top of python's asyncio stream
abstraction. This is a lightweight class that accepts incoming requests,
logs them, and sends them to a configurable request handler to be processed.
GeminiRequestHandler:
The request handler manages the life of a single gemini request. It exposes
a simplified interface to read the request URL and write the gemini response
status line and body to the socket. The request URL and other server
information is stuffed into an ``environ`` dictionary that encapsulates the
request at a low level. This dictionary, along with a callback to write the
response data, and passed to a configurable "application" function or class.
JetforceApplication:
This is a base class for writing jetforce server applications. It doesn't
anything on its own, but it does provide a convenient interface to define
custom server endpoints using route decorators. If you want to utilize
jetforce as a library and write your own server in python, this is the class
that you want to extend. The examples/ directory contains some examples of
how to accomplish this.
StaticDirectoryApplication:
This is a pre-built application that serves files from a static directory.
It provides an "out-of-the-box" gemini server without needing to write any
lines of code. This is what is invoked when you launch jetforce from the
command line.
"""
from __future__ import annotations
import argparse
import base64
import codecs
import dataclasses
import datetime
import mimetypes
import os
import pathlib
import re
import socket
import subprocess
import sys
import tempfile
import time
import typing
import urllib.parse
from cryptography import x509
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives import hashes, serialization
from cryptography.hazmat.primitives.asymmetric import rsa
from OpenSSL import SSL
from twisted.internet import reactor
from twisted.internet.base import ReactorBase
from twisted.internet.endpoints import SSL4ServerEndpoint
from twisted.internet.protocol import Factory
from twisted.internet.ssl import CertificateOptions
from twisted.internet.tcp import Port
from twisted.protocols.basic import LineOnlyReceiver
CN = x509.NameOID.COMMON_NAME
if sys.version_info < (3, 7):
sys.exit("Fatal Error: jetforce requires Python 3.7+")
__version__ = "0.2.2"
__title__ = "Jetforce Gemini Server"
__author__ = "Michael Lazar"
__license__ = "Floodgap Free Software License"
__copyright__ = "(c) 2020 Michael Lazar"
ABOUT = fr"""
You are now riding on...
_________ _____________
______ /______ /___ __/_______________________
___ _ /_ _ \ __/_ /_ _ __ \_ ___/ ___/ _ \
/ /_/ / / __/ /_ _ __/ / /_/ / / / /__ / __/
\____/ \___/\__/ /_/ \____//_/ \___/ \___/
An Experimental Gemini Server, v{__version__}
https://github.com/michael-lazar/jetforce
"""
# fmt: off
# noinspection PyTypeChecker
parser = argparse.ArgumentParser(
prog="jetforce",
description="An Experimental Gemini Protocol Server",
formatter_class=argparse.ArgumentDefaultsHelpFormatter,
)
parser.add_argument(
"-V", "--version",
action="version",
version="jetforce " + __version__
)
parser.add_argument(
"--host",
help="Server address to bind to",
default="127.0.0.1"
)
parser.add_argument(
"--port",
help="Server port to bind to",
type=int,
default=1965
)
parser.add_argument(
"--hostname",
help="Server hostname",
default="localhost"
)
parser.add_argument(
"--tls-certfile",
dest="certfile",
help="Server TLS certificate file",
metavar="FILE",
)
parser.add_argument(
"--tls-keyfile",
dest="keyfile",
help="Server TLS private key file",
metavar="FILE",
)
parser.add_argument(
"--tls-cafile",
dest="cafile",
help="A CA file to use for validating clients",
metavar="FILE",
)
parser.add_argument(
"--tls-capath",
dest="capath",
help="A directory containing CA files for validating clients",
metavar="DIR",
)
# Arguments below this line are specific to the StaticDirectoryApplication
parser.add_argument(
"--dir",
help="Root directory on the filesystem to serve",
default="/var/gemini",
metavar="DIR",
)
parser.add_argument(
"--cgi-dir",
help="CGI script directory, relative to the server's root directory",
default="cgi-bin",
metavar="DIR",
)
parser.add_argument(
"--index-file",
help="If a directory contains a file with this name, "
"that file will be served instead of auto-generating an index page",
default="index.gmi",
metavar="FILE",
)
# fmt: on
class Status:
"""
Gemini response status codes.
"""
INPUT = 10
SUCCESS = 20
SUCCESS_END_OF_SESSION = 21
REDIRECT_TEMPORARY = 30
REDIRECT_PERMANENT = 31
TEMPORARY_FAILURE = 40
SERVER_UNAVAILABLE = 41
CGI_ERROR = 42
PROXY_ERROR = 43
SLOW_DOWN = 44
PERMANENT_FAILURE = 50
NOT_FOUND = 51
GONE = 52
PROXY_REQUEST_REFUSED = 53
BAD_REQUEST = 59
CLIENT_CERTIFICATE_REQUIRED = 60
TRANSIENT_CERTIFICATE_REQUESTED = 61
AUTHORISED_CERTIFICATE_REQUIRED = 62
CERTIFICATE_NOT_ACCEPTED = 63
FUTURE_CERTIFICATE_REJECTED = 64
EXPIRED_CERTIFICATE_REJECTED = 65
class Request:
"""
Object that encapsulates information about a single gemini request.
"""
def __init__(self, environ: dict):
self.environ = environ
self.url = environ["GEMINI_URL"]
url_parts = urllib.parse.urlparse(self.url)
if not url_parts.hostname:
raise ValueError("URL must contain a `hostname` part")
if not url_parts.scheme:
# If scheme is missing, infer it to be gemini://
self.scheme = "gemini"
else:
self.scheme = url_parts.scheme
self.hostname = url_parts.hostname
self.port = url_parts.port
self.path = url_parts.path
self.params = url_parts.params
self.query = urllib.parse.unquote(url_parts.query)
self.fragment = url_parts.fragment
@dataclasses.dataclass
class Response:
"""
Object that encapsulates information about a single gemini response.
"""
status: int
meta: str
body: typing.Union[None, bytes, str, typing.Iterator[bytes]] = None
@dataclasses.dataclass
class RoutePattern:
"""
A pattern for matching URLs with a single endpoint or route.
"""
path: str = ".*"
scheme: str = "gemini"
hostname: typing.Optional[str] = None
strict_hostname: bool = True
strict_port: bool = True
strict_trailing_slash: bool = False
def match(self, request: Request) -> typing.Optional[re.Match]:
"""
Check if the given request URL matches this route pattern.
"""
if self.hostname is None:
server_hostname = request.environ["HOSTNAME"]
else:
server_hostname = self.hostname
server_port = int(request.environ["SERVER_PORT"])
if self.strict_hostname and request.hostname != server_hostname:
return
if self.strict_port and request.port is not None:
if request.port != server_port:
return
if self.scheme and self.scheme != request.scheme:
return
if self.strict_trailing_slash:
request_path = request.path
else:
request_path = request.path.rstrip("/")
return re.fullmatch(self.path, request_path)
def generate_ad_hoc_certificate(hostname: str) -> typing.Tuple[str, str]:
"""
Utility function to generate an ad-hoc self-signed SSL certificate.
"""
certfile = os.path.join(tempfile.gettempdir(), f"{hostname}.crt")
keyfile = os.path.join(tempfile.gettempdir(), f"{hostname}.key")
if not os.path.exists(certfile) or not os.path.exists(keyfile):
backend = default_backend()
print("Generating private key...", file=sys.stderr)
private_key = rsa.generate_private_key(65537, 2048, default_backend())
with open(keyfile, "wb") as fp:
# noinspection PyTypeChecker
key_data = private_key.private_bytes(
serialization.Encoding.PEM,
format=serialization.PrivateFormat.TraditionalOpenSSL,
encryption_algorithm=serialization.NoEncryption(),
)
fp.write(key_data)
print("Generating certificate...", file=sys.stderr)
common_name = x509.NameAttribute(CN, hostname)
subject_name = x509.Name([common_name])
not_valid_before = datetime.datetime.utcnow()
not_valid_after = not_valid_before + datetime.timedelta(days=365)
certificate = x509.CertificateBuilder(
subject_name=subject_name,
issuer_name=subject_name,
public_key=private_key.public_key(),
serial_number=x509.random_serial_number(),
not_valid_before=not_valid_before,
not_valid_after=not_valid_after,
)
certificate = certificate.sign(private_key, hashes.SHA256(), backend)
with open(certfile, "wb") as fp:
# noinspection PyTypeChecker
cert_data = certificate.public_bytes(serialization.Encoding.PEM)
fp.write(cert_data)
return certfile, keyfile
class JetforceApplication:
"""
Base Jetforce application class with primitive URL routing.
This is a base class for writing jetforce server applications. It doesn't
anything on its own, but it does provide a convenient interface to define
custom server endpoints using route decorators. If you want to utilize
jetforce as a library and write your own server in python, this is the class
that you want to extend. The examples/ directory contains some examples of
how to accomplish this.
"""
def __init__(self):
self.routes: typing.List[
typing.Tuple[RoutePattern, typing.Callable[[Request], Response]]
] = []
def __call__(
self, environ: dict, send_status: typing.Callable
) -> typing.Iterator[bytes]:
try:
request = Request(environ)
except Exception:
send_status(Status.BAD_REQUEST, "Unrecognized URL format")
return
for route_pattern, callback in self.routes[::-1]:
if route_pattern.match(request):
break
else:
callback = self.default_callback
response = callback(request)
send_status(response.status, response.meta)
if isinstance(response.body, bytes):
yield response.body
elif isinstance(response.body, str):
yield response.body.encode()
elif response.body:
yield from response.body
def route(
self,
path: str = ".*",
scheme: str = "gemini",
hostname: typing.Optional[str] = None,
strict_hostname: bool = True,
strict_trailing_slash: bool = False,
) -> typing.Callable:
"""
Decorator for binding a function to a route based on the URL path.
app = JetforceApplication()
@app.route('/my-path')
def my_path(request):
return Response(Status.SUCCESS, 'text/plain', 'Hello world!')
"""
route_pattern = RoutePattern(
path, scheme, hostname, strict_hostname, strict_trailing_slash
)
def wrap(func: typing.Callable) -> typing.Callable:
self.routes.append((route_pattern, func))
return func
return wrap
def default_callback(self, request: Request) -> Response:
"""
Set the error response based on the URL type.
"""
return Response(Status.PERMANENT_FAILURE, "Not Found")
class StaticDirectoryApplication(JetforceApplication):
"""
Application for serving static files & CGI over gemini.
This is a pre-built application that serves files from a static directory.
It provides an "out-of-the-box" gemini server without needing to write any
lines of code. This is what is invoked when you launch jetforce from the
command line.
If a directory contains a file with the name "index.gmi", that file will
be returned when the directory path is requested. Otherwise, a directory
listing will be auto-generated.
"""
def __init__(
self,
root_directory: str = "/var/gemini",
index_file: str = "index.gmi",
cgi_directory: str = "cgi-bin",
):
super().__init__()
self.routes.append((RoutePattern(), self.serve_static_file))
self.root = pathlib.Path(root_directory).resolve(strict=True)
self.cgi_directory = cgi_directory.strip("/") + "/"
self.index_file = index_file
self.mimetypes = mimetypes.MimeTypes()
self.mimetypes.add_type("text/gemini", ".gmi")
self.mimetypes.add_type("text/gemini", ".gemini")
def serve_static_file(self, request: Request) -> Response:
"""
Convert a URL into a filesystem path, and attempt to serve the file
or directory that is represented at that path.
"""
url_path = pathlib.Path(request.path.strip("/"))
filename = pathlib.Path(os.path.normpath(str(url_path)))
if filename.is_absolute() or str(filename.name).startswith(".."):
# Guard against breaking out of the directory
return Response(Status.NOT_FOUND, "Not Found")
filesystem_path = self.root / filename
try:
if not os.access(filesystem_path, os.R_OK):
# File not readable
return Response(Status.NOT_FOUND, "Not Found")
except OSError:
# Filename too large, etc.
return Response(Status.NOT_FOUND, "Not Found")
if filesystem_path.is_file():
is_cgi = str(filename).startswith(self.cgi_directory)
is_exe = os.access(filesystem_path, os.X_OK)
if is_cgi and is_exe:
return self.run_cgi_script(filesystem_path, request.environ)
mimetype = self.guess_mimetype(filesystem_path.name)
generator = self.load_file(filesystem_path)
return Response(Status.SUCCESS, mimetype, generator)
elif filesystem_path.is_dir():
if not request.path.endswith("/"):
url_parts = urllib.parse.urlparse(request.url)
url_parts = url_parts._replace(path=request.path + "/")
return Response(Status.REDIRECT_PERMANENT, url_parts.geturl())
index_file = filesystem_path / self.index_file
if index_file.exists():
generator = self.load_file(index_file)
return Response(Status.SUCCESS, "text/gemini", generator)
generator = self.list_directory(url_path, filesystem_path)
return Response(Status.SUCCESS, "text/gemini", generator)
else:
return Response(Status.NOT_FOUND, "Not Found")
def run_cgi_script(self, filesystem_path: pathlib.Path, environ: dict) -> Response:
"""
Execute the given file as a CGI script and return the script's stdout
stream to the client.
"""
script_name = str(filesystem_path)
cgi_env = environ.copy()
cgi_env["GATEWAY_INTERFACE"] = "GCI/1.1"
cgi_env["SCRIPT_NAME"] = script_name
# Decode the stream as unicode so we can parse the status line
# Use surrogateescape to preserve any non-UTF8 byte sequences.
out = subprocess.Popen(
[script_name],
stdout=subprocess.PIPE,
env=cgi_env,
bufsize=1,
universal_newlines=True,
errors="surrogateescape",
)
status_line = out.stdout.readline().strip()
status_parts = status_line.split(maxsplit=1)
if len(status_parts) != 2 or not status_parts[0].isdecimal():
return Response(Status.CGI_ERROR, "Unexpected Error")
status, meta = status_parts
# Re-encode the rest of the body as bytes
body = codecs.iterencode(out.stdout, encoding="utf-8", errors="surrogateescape")
return Response(int(status), meta, body)
def load_file(self, filesystem_path: pathlib.Path) -> typing.Iterator[bytes]:
"""
Load a file in chunks to allow streaming to the TCP socket.
"""
with filesystem_path.open("rb") as fp:
data = fp.read(1024)
while data:
yield data
data = fp.read(1024)
def list_directory(
self, url_path: pathlib.Path, filesystem_path: pathlib.Path
) -> typing.Iterator[bytes]:
"""
Auto-generate a text/gemini document based on the contents of the file system.
"""
yield f"Directory: /{url_path}\r\n".encode()
if url_path.parent != url_path:
yield f"=>/{url_path.parent}\t..\r\n".encode()
for file in sorted(filesystem_path.iterdir()):
if file.name.startswith("."):
# Skip hidden directories/files that may contain sensitive info
continue
elif file.is_dir():
yield f"=>/{url_path / file.name}/\t{file.name}/\r\n".encode()
else:
yield f"=>/{url_path / file.name}\t{file.name}\r\n".encode()
def guess_mimetype(self, filename: str) -> str:
"""
Guess the mimetype of a file based on the file extension.
"""
mime, encoding = self.mimetypes.guess_type(filename)
if encoding:
return f"{mime}; charset={encoding}"
else:
return mime or "text/plain"
def default_callback(self, request: Request) -> Response:
"""
Since the StaticDirectoryApplication only serves gemini URLs, return
a proxy request refused for suspicious URLs.
"""
if request.scheme != "gemini":
return Response(
Status.PROXY_REQUEST_REFUSED,
"This server does not allow proxy requests",
)
elif request.hostname != request.environ["HOSTNAME"]:
return Response(
Status.PROXY_REQUEST_REFUSED,
"This server does not allow proxy requests",
)
elif request.port and request.port != request.environ["SERVER_PORT"]:
return Response(
Status.PROXY_REQUEST_REFUSED,
"This server does not allow proxy requests",
)
else:
return Response(Status.NOT_FOUND, "Not Found")
class GeminiTLSContextFactory:
"""
Generate a sane default SSL context for a Gemini server.
"""
def __init__(
self,
hostname: str = "localhost",
certfile: typing.Optional[str] = None,
keyfile: typing.Optional[str] = None,
cafile: typing.Optional[str] = None,
capath: typing.Optional[str] = None,
):
if certfile is None:
certfile, keyfile = generate_ad_hoc_certificate(hostname)
context = SSL.Context(SSL.TLSv1_2_METHOD)
context.use_certificate_file(certfile)
context.use_privatekey_file(keyfile or certfile)
context.check_privatekey()
if cafile or capath:
context.load_verify_locations(cafile, capath)
context.set_verify(SSL.VERIFY_PEER, self.verify_cb)
self.context = context
def getContext(self) -> SSL.Context:
"""
Return the SSL context, this method must be implemented for twisted.
"""
return self.context
def verify_cb(self, connection, x509, err_no, err_depth, return_code):
"""
Disable all peer certificate validation at the openSSL level in order
to allow self-signed client certificates.
"""
return True
class GeminiProtocol(LineOnlyReceiver):
"""
Handle a single Gemini Protocol TCP request.
The request handler manages the life of a single gemini request. It exposes
a simplified interface to read the request URL and write the gemini response
status line and body to the socket. The request URL and other server
information is stuffed into an ``environ`` dictionary that encapsulates the
request at a low level. This dictionary, along with a callback to write the
response data, and passed to a configurable "application" function or class.
This design borrows heavily from the standard library's HTTP request
handler (http.server.BaseHTTPRequestHandler). However, I did not make any
attempts to directly emulate the existing conventions, because Gemini is an
inherently simpler protocol than HTTP and much of the boilerplate could be
removed.
"""
TIMESTAMP_FORMAT = "%d/%b/%Y:%H:%M:%S %z"
connected_timestamp: time.struct_time
request: bytes
url: str
status: int
meta: str
response_buffer: str
response_size: int
def __init__(self, server: GeminiServer, app: JetforceApplication):
self.server = server
self.app = app
def connectionMade(self):
"""
This is invoked by twisted after the connection is first established.
"""
self.connected_timestamp = time.localtime()
self.response_size = 0
self.response_buffer = ""
def lineReceived(self, line):
"""
This method is invoked by LineOnlyReceiver for every incoming line.
Because Gemini requests are only ever a single line long, this will
only be called once and we can use it to handle the lifetime of the
connection without managing any state.
"""
self.request = line
try:
try:
self.handle()
finally:
self.flush_status()
try:
self.log_request()
except Exception:
# Malformed request or dropped connection
pass
finally:
self.transport.loseConnection()
def handle(self):
try:
self.parse_header()
except Exception:
# Malformed request, throw it away and exit immediately
self.write_status(Status.BAD_REQUEST, "Malformed request")
return
try:
environ = self.build_environ()
response_generator = self.app(environ, self.write_status)
for data in response_generator:
self.write_body(data)
except Exception:
self.write_status(Status.CGI_ERROR, "An unexpected error occurred")
def build_environ(self) -> typing.Dict[str, typing.Any]:
"""
Construct a dictionary that will be passed to the application handler.
Variable names conform to the CGI spec defined in RFC 3875.
"""
url_parts = urllib.parse.urlparse(self.url)
client_addr = self.transport.getPeer()
environ = {
"GEMINI_URL": self.url,
"HOSTNAME": self.server.hostname,
"PATH_INFO": url_parts.path,
"QUERY_STRING": url_parts.query,
"REMOTE_ADDR": client_addr.host,
"REMOTE_HOST": client_addr.host,
"SERVER_NAME": self.server.hostname,
"SERVER_PORT": str(client_addr.port),
"SERVER_PROTOCOL": "GEMINI",
"SERVER_SOFTWARE": f"jetforce/{__version__}",
}
openssl_cert = self.transport.getPeerCertificate()
if openssl_cert:
# Extract useful information from the client certificate. These
# mostly follow the naming convention from GLV-1.12556
cert = openssl_cert.to_cryptography()
name_attrs = cert.subject.get_attributes_for_oid(CN)
common_name = name_attrs[0].value if name_attrs else ""
fingerprint_bytes = cert.fingerprint(hashes.SHA256())
fingerprint = base64.b64encode(fingerprint_bytes).decode()
not_before = cert.not_valid_before.strftime("%Y-%m-%dT%H:%M:%SZ")
not_after = cert.not_valid_after.strftime("%Y-%m-%dT%H:%M:%SZ")
environ.update(
{
"AUTH_TYPE": "CERTIFICATE",
"REMOTE_USER": common_name,
"TLS_CLIENT_HASH": fingerprint,
"TLS_CLIENT_NOT_BEFORE": not_before,
"TLS_CLIENT_NOT_AFTER": not_after,
"TLS_CLIENT_SERIAL_NUMBER": cert.serial_number,
}
)
return environ
def parse_header(self) -> None:
"""
Parse the gemini header line.
The request is a single UTF-8 line formatted as: <URL>\r\n
"""
if len(self.request) > 1024:
raise ValueError("URL exceeds max length of 1024 bytes")
self.url = self.request.decode()
def write_status(self, status: int, meta: str) -> None:
"""
Write the gemini status line to an internal buffer.
The status line is a single UTF-8 line formatted as:
<code>\t<meta>\r\n
If the response status is 2, the meta field will contain the mimetype
of the response data sent. If the status is something else, the meta
will contain a descriptive message.
The status is not written immediately, it's added to an internal buffer
that must be flushed. This is done so that the status can be updated as
long as no other data has been written to the stream yet.
"""
self.status = status
self.meta = meta
self.response_buffer = f"{status}\t{meta}\r\n"
def write_body(self, data: bytes) -> None:
"""
Write bytes to the gemini response body.
"""
self.flush_status()
self.response_size += len(data)
self.transport.write(data)
def flush_status(self) -> None:
"""
Flush the status line from the internal buffer to the socket stream.
"""
if self.response_buffer and not self.response_size:
data = self.response_buffer.encode()
self.response_size += len(data)
self.transport.write(data)
self.response_buffer = ""
def log_request(self) -> None:
"""
Log a gemini request using a format derived from the Common Log Format.
"""
message = '{} [{}] "{}" {} {} {}'.format(
self.transport.getPeer().host,
time.strftime(self.TIMESTAMP_FORMAT, self.connected_timestamp),
self.url,
self.status,
self.meta,
self.response_size,
)
self.server.log_message(message)
class GeminiServer(Factory):
"""
This class acts as a wrapper around most of the plumbing for twisted.
There's not much going on here, the main intention is to make it as simple
as possible to import and run a server without needing to understand the
complicated class hierarchy and conventions defined by twisted.
"""
# Initializes the pyOpenSSL context object, you may want to override this
# to customize your server's TLS configuration.
tls_context_factory_class = GeminiTLSContextFactory
# Request handler class, you probably don't want to override this.
protocol_class = GeminiProtocol
# The TLS twisted interface class is confusingly named SSL4, even though it
# will accept either IPv4 & IPv6 interfaces.
endpoint_class = SSL4ServerEndpoint
def __init__(
self,
app: typing.Callable,
reactor: ReactorBase = reactor,
host: str = "127.0.0.1",
port: int = 1965,
hostname: str = "localhost",
certfile: typing.Optional[str] = None,
keyfile: typing.Optional[str] = None,
cafile: typing.Optional[str] = None,
capath: typing.Optional[str] = None,
**_,
):
self.app = app
self.reactor = reactor
self.host = host
self.port = port
self.hostname = hostname
self.certfile = certfile
self.keyfile = keyfile
self.cafile = cafile
self.capath = capath
def log_message(self, message: str) -> None:
"""
Log a diagnostic server message to stderr.
"""
print(message, file=sys.stderr)
def on_bind_interface(self, port: Port) -> None:
"""
Log when the server binds to an interface.
"""
sock_ip, sock_port, *_ = port.socket.getsockname()
if port.addressFamily == socket.AF_INET:
self.log_message(f"Listening on {sock_ip}:{sock_port}")
else:
self.log_message(f"Listening on [{sock_ip}]:{sock_port}")
def buildProtocol(self, addr) -> GeminiProtocol:
"""
This method is invoked by twisted once for every incoming connection.
It builds the protocol instance which acts as a request handler and
implements the actual Gemini protocol.
"""
return GeminiProtocol(self, self.app)
def run(self) -> None:
"""
This is the main server loop.
"""
self.log_message(ABOUT)
self.log_message(f"Server hostname is {self.hostname}")
tls_context_factory = self.tls_context_factory_class(
hostname=self.hostname,
certfile=self.certfile,
keyfile=self.keyfile,
cafile=self.cafile,
capath=self.capath,
)
endpoint = self.endpoint_class(
reactor=self.reactor,
port=self.port,
sslContextFactory=tls_context_factory,
interface=self.host,
)
endpoint.listen(self).addCallback(self.on_bind_interface)
self.reactor.run()
def run_server() -> None:
"""
Entry point for running the static directory server.
"""
args = parser.parse_args()
app = StaticDirectoryApplication(args.dir, args.index_file, args.cgi_dir)
server = GeminiServer(app, **vars(args))
server.run()
if __name__ == "__main__":
run_server()
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