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"""Native adapter for serving CherryPy via its builtin server."""
import logging
import sys
import io
import cheroot.server
import cherrypy
from cherrypy._cperror import format_exc, bare_error
from cherrypy.lib import httputil
from ._cpcompat import tonative
class NativeGateway(cheroot.server.Gateway):
"""Native gateway implementation allowing to bypass WSGI."""
recursive = False
def respond(self):
"""Obtain response from CherryPy machinery and then send it."""
req = self.req
try:
# Obtain a Request object from CherryPy
local = req.server.bind_addr # FIXME: handle UNIX sockets
local = tonative(local[0]), local[1]
local = httputil.Host(local[0], local[1], '')
remote = tonative(req.conn.remote_addr), req.conn.remote_port
remote = httputil.Host(remote[0], remote[1], '')
scheme = tonative(req.scheme)
sn = cherrypy.tree.script_name(tonative(req.uri or '/'))
if sn is None:
self.send_response('404 Not Found', [], [''])
else:
app = cherrypy.tree.apps[sn]
method = tonative(req.method)
path = tonative(req.path)
qs = tonative(req.qs or '')
headers = (
(tonative(h), tonative(v))
for h, v in req.inheaders.items()
)
rfile = req.rfile
prev = None
try:
redirections = []
while True:
request, response = app.get_serving(
local, remote, scheme, 'HTTP/1.1')
request.multithread = True
request.multiprocess = False
request.app = app
request.prev = prev
# Run the CherryPy Request object and obtain the
# response
try:
request.run(
method, path, qs,
tonative(req.request_protocol),
headers, rfile,
)
break
except cherrypy.InternalRedirect:
ir = sys.exc_info()[1]
app.release_serving()
prev = request
if not self.recursive:
if ir.path in redirections:
raise RuntimeError(
'InternalRedirector visited the same '
'URL twice: %r' % ir.path)
else:
# Add the *previous* path_info + qs to
# redirections.
if qs:
qs = '?' + qs
redirections.append(sn + path + qs)
# Munge environment and try again.
method = 'GET'
path = ir.path
qs = ir.query_string
rfile = io.BytesIO()
self.send_response(
response.output_status, response.header_list,
response.body)
finally:
app.release_serving()
except Exception:
tb = format_exc()
# print tb
cherrypy.log(tb, 'NATIVE_ADAPTER', severity=logging.ERROR)
s, h, b = bare_error()
self.send_response(s, h, b)
def send_response(self, status, headers, body):
"""Send response to HTTP request."""
req = self.req
# Set response status
req.status = status or b'500 Server Error'
# Set response headers
for header, value in headers:
req.outheaders.append((header, value))
if (req.ready and not req.sent_headers):
req.sent_headers = True
req.send_headers()
# Set response body
for seg in body:
req.write(seg)
class CPHTTPServer(cheroot.server.HTTPServer):
"""Wrapper for cheroot.server.HTTPServer.
cheroot has been designed to not reference CherryPy in any way,
so that it can be used in other frameworks and applications.
Therefore, we wrap it here, so we can apply some attributes
from config -> cherrypy.server -> HTTPServer.
"""
def __init__(self, server_adapter=cherrypy.server):
"""Initialize CPHTTPServer."""
self.server_adapter = server_adapter
server_name = (self.server_adapter.socket_host or
self.server_adapter.socket_file or
None)
cheroot.server.HTTPServer.__init__(
self, server_adapter.bind_addr, NativeGateway,
minthreads=server_adapter.thread_pool,
maxthreads=server_adapter.thread_pool_max,
server_name=server_name)
self.max_request_header_size = (
self.server_adapter.max_request_header_size or 0)
self.max_request_body_size = (
self.server_adapter.max_request_body_size or 0)
self.request_queue_size = self.server_adapter.socket_queue_size
self.timeout = self.server_adapter.socket_timeout
self.shutdown_timeout = self.server_adapter.shutdown_timeout
self.protocol = self.server_adapter.protocol_version
self.nodelay = self.server_adapter.nodelay
ssl_module = self.server_adapter.ssl_module or 'pyopenssl'
if self.server_adapter.ssl_context:
adapter_class = cheroot.server.get_ssl_adapter_class(ssl_module)
self.ssl_adapter = adapter_class(
self.server_adapter.ssl_certificate,
self.server_adapter.ssl_private_key,
self.server_adapter.ssl_certificate_chain,
self.server_adapter.ssl_ciphers)
self.ssl_adapter.context = self.server_adapter.ssl_context
elif self.server_adapter.ssl_certificate:
adapter_class = cheroot.server.get_ssl_adapter_class(ssl_module)
self.ssl_adapter = adapter_class(
self.server_adapter.ssl_certificate,
self.server_adapter.ssl_private_key,
self.server_adapter.ssl_certificate_chain,
self.server_adapter.ssl_ciphers)
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