227 lines
8.7 KiB
Python
227 lines
8.7 KiB
Python
import os
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from pprint import pformat
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from django import http
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from django.core import signals
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from django.core.handlers.base import BaseHandler
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from django.core.urlresolvers import set_script_prefix
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from django.utils import datastructures
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from django.utils.encoding import force_unicode, smart_str
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# NOTE: do *not* import settings (or any module which eventually imports
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# settings) until after ModPythonHandler has been called; otherwise os.environ
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# won't be set up correctly (with respect to settings).
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class ModPythonRequest(http.HttpRequest):
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def __init__(self, req):
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self._req = req
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# FIXME: This isn't ideal. The request URI may be encoded (it's
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# non-normalized) slightly differently to the "real" SCRIPT_NAME
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# and PATH_INFO values. This causes problems when we compute path_info,
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# below. For now, don't use script names that will be subject to
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# encoding/decoding.
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self.path = force_unicode(req.uri)
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root = req.get_options().get('django.root', '')
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self.django_root = root
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# req.path_info isn't necessarily computed correctly in all
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# circumstances (it's out of mod_python's control a bit), so we use
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# req.uri and some string manipulations to get the right value.
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if root and req.uri.startswith(root):
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self.path_info = force_unicode(req.uri[len(root):])
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else:
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self.path_info = self.path
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if not self.path_info:
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# Django prefers empty paths to be '/', rather than '', to give us
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# a common start character for URL patterns. So this is a little
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# naughty, but also pretty harmless.
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self.path_info = u'/'
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self._post_parse_error = False
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def __repr__(self):
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# Since this is called as part of error handling, we need to be very
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# robust against potentially malformed input.
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try:
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get = pformat(self.GET)
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except:
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get = '<could not parse>'
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if self._post_parse_error:
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post = '<could not parse>'
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else:
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try:
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post = pformat(self.POST)
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except:
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post = '<could not parse>'
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try:
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cookies = pformat(self.COOKIES)
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except:
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cookies = '<could not parse>'
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try:
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meta = pformat(self.META)
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except:
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meta = '<could not parse>'
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return smart_str(u'<ModPythonRequest\npath:%s,\nGET:%s,\nPOST:%s,\nCOOKIES:%s,\nMETA:%s>' %
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(self.path, unicode(get), unicode(post),
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unicode(cookies), unicode(meta)))
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def get_full_path(self):
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return '%s%s' % (self.path, self._req.args and ('?' + self._req.args) or '')
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def is_secure(self):
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try:
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return self._req.is_https()
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except AttributeError:
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# mod_python < 3.2.10 doesn't have req.is_https().
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return self._req.subprocess_env.get('HTTPS', '').lower() in ('on', '1')
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def _load_post_and_files(self):
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"Populates self._post and self._files"
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if self.method != 'POST':
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self._post, self._files = http.QueryDict('', encoding=self._encoding), datastructures.MultiValueDict()
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return
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if 'content-type' in self._req.headers_in and self._req.headers_in['content-type'].startswith('multipart'):
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self._raw_post_data = ''
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try:
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self._post, self._files = self.parse_file_upload(self.META, self._req)
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except:
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# See django.core.handlers.wsgi.WSGIHandler for an explanation
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# of what's going on here.
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self._post = http.QueryDict('')
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self._files = datastructures.MultiValueDict()
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self._post_parse_error = True
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raise
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else:
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self._post, self._files = http.QueryDict(self.raw_post_data, encoding=self._encoding), datastructures.MultiValueDict()
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def _get_request(self):
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if not hasattr(self, '_request'):
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self._request = datastructures.MergeDict(self.POST, self.GET)
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return self._request
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def _get_get(self):
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if not hasattr(self, '_get'):
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self._get = http.QueryDict(self._req.args, encoding=self._encoding)
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return self._get
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def _set_get(self, get):
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self._get = get
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def _get_post(self):
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if not hasattr(self, '_post'):
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self._load_post_and_files()
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return self._post
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def _set_post(self, post):
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self._post = post
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def _get_cookies(self):
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if not hasattr(self, '_cookies'):
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self._cookies = http.parse_cookie(self._req.headers_in.get('cookie', ''))
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return self._cookies
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def _set_cookies(self, cookies):
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self._cookies = cookies
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def _get_files(self):
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if not hasattr(self, '_files'):
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self._load_post_and_files()
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return self._files
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def _get_meta(self):
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"Lazy loader that returns self.META dictionary"
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if not hasattr(self, '_meta'):
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self._meta = {
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'AUTH_TYPE': self._req.ap_auth_type,
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'CONTENT_LENGTH': self._req.clength, # This may be wrong
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'CONTENT_TYPE': self._req.content_type, # This may be wrong
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'GATEWAY_INTERFACE': 'CGI/1.1',
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'PATH_INFO': self.path_info,
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'PATH_TRANSLATED': None, # Not supported
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'QUERY_STRING': self._req.args,
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'REMOTE_ADDR': self._req.connection.remote_ip,
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'REMOTE_HOST': None, # DNS lookups not supported
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'REMOTE_IDENT': self._req.connection.remote_logname,
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'REMOTE_USER': self._req.user,
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'REQUEST_METHOD': self._req.method,
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'SCRIPT_NAME': self.django_root,
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'SERVER_NAME': self._req.server.server_hostname,
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'SERVER_PORT': self._req.server.port,
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'SERVER_PROTOCOL': self._req.protocol,
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'SERVER_SOFTWARE': 'mod_python'
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}
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for key, value in self._req.headers_in.items():
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key = 'HTTP_' + key.upper().replace('-', '_')
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self._meta[key] = value
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return self._meta
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def _get_raw_post_data(self):
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try:
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return self._raw_post_data
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except AttributeError:
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self._raw_post_data = self._req.read()
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return self._raw_post_data
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def _get_method(self):
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return self.META['REQUEST_METHOD'].upper()
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GET = property(_get_get, _set_get)
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POST = property(_get_post, _set_post)
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COOKIES = property(_get_cookies, _set_cookies)
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FILES = property(_get_files)
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META = property(_get_meta)
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REQUEST = property(_get_request)
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raw_post_data = property(_get_raw_post_data)
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method = property(_get_method)
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class ModPythonHandler(BaseHandler):
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request_class = ModPythonRequest
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def __call__(self, req):
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# mod_python fakes the environ, and thus doesn't process SetEnv. This fixes that
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os.environ.update(req.subprocess_env)
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# now that the environ works we can see the correct settings, so imports
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# that use settings now can work
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from django.conf import settings
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# if we need to set up middleware, now that settings works we can do it now.
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if self._request_middleware is None:
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self.load_middleware()
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set_script_prefix(req.get_options().get('django.root', ''))
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signals.request_started.send(sender=self.__class__)
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try:
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try:
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request = self.request_class(req)
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except UnicodeDecodeError:
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response = http.HttpResponseBadRequest()
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else:
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response = self.get_response(request)
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# Apply response middleware
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for middleware_method in self._response_middleware:
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response = middleware_method(request, response)
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response = self.apply_response_fixes(request, response)
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finally:
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signals.request_finished.send(sender=self.__class__)
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# Convert our custom HttpResponse object back into the mod_python req.
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req.content_type = response['Content-Type']
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for key, value in response.items():
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if key != 'content-type':
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req.headers_out[str(key)] = str(value)
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for c in response.cookies.values():
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req.headers_out.add('Set-Cookie', c.output(header=''))
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req.status = response.status_code
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try:
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for chunk in response:
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req.write(chunk)
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finally:
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response.close()
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return 0 # mod_python.apache.OK
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def handler(req):
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# mod_python hooks into this function.
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return ModPythonHandler()(req)
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