43
39
String. The path specified in the URL *not including* the
44
40
application or the IVLE location prefix. eg. a URL of
45
41
"/ivle/files/joe/myfiles" has a path of "joe/myfiles".
47
User object. Details of the user who is currently logged in, or
50
String. Hostname the server is running on.
52
Table object representing headers sent by the client.
53
headers_out (read, can be written to)
54
Table object representing headers to be sent to the client.
56
Bool. True if the request came for the "public host" as
57
configured in conf.py. Note that public mode requests do not
58
have an app (app is set to None).
61
44
Int. Response status number. Use one of the status codes defined
69
52
String. HTML page title. Used if write_html_head_foot is True, in
70
53
the HTML title element text.
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List of strings. Write a list of URLs to CSS files here, and they
73
will be incorporated as <link rel="stylesheet" type="text/css">
74
elements in the head, if write_html_head_foot is True.
75
URLs should be relative to the IVLE root; they will be fixed up
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List of strings. Write a list of URLs to JS files here, and they
79
will be incorporated as <script type="text/javascript"> elements
80
in the head, if write_html_head_foot is True.
81
URLs should be relative to the IVLE root; they will be fixed up
83
54
write_html_head_foot (write)
84
55
Boolean. If True, dispatch assumes that this is an XHTML page, and
85
56
will immediately write a full HTML head, open the body element,
165
136
self.func_write_html_head = write_html_head
166
137
self.headers_written = False
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# Determine if the browser used the public host name to make the
169
# request (in which case we are in "public mode")
170
if req.hostname == conf.public_host:
171
self.publicmode = True
173
self.publicmode = False
175
139
# Inherit values for the input members
176
self.method = req.method
177
140
self.uri = req.uri
178
141
# Split the given path into the app (top-level dir) and sub-path
179
142
# (after first stripping away the root directory)
180
path = common.util.unmake_path(req.uri)
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(_, self.path) = (common.util.split_path(path))
185
(self.app, self.path) = (common.util.split_path(path))
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self.hostname = req.hostname
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self.headers_in = req.headers_in
189
self.headers_out = req.headers_out
143
(self.app, self.path) = (
144
common.util.split_path(common.util.unmake_path(req.uri)))
191
146
# Default values for the output members
192
self.status = Request.HTTP_OK
147
self.status = Request.OK
193
148
self.content_type = None # Use Apache's default
194
149
self.location = None
195
150
self.title = None # Will be set by dispatch before passing to app
198
151
self.write_html_head_foot = False
199
self.got_common_vars = False
201
153
def __writeheaders(self):
202
154
"""Writes out the HTTP and HTML headers before any real data is
225
177
if not self.headers_written:
226
178
self.__writeheaders()
227
if isinstance(string, unicode):
228
# Encode unicode strings as UTF-8
229
# (Otherwise cannot handle being written to a bytestream)
230
self.apache_req.write(string.encode('utf8'), flush)
232
# 8-bit clean strings just get written directly.
233
# This includes binary strings.
234
self.apache_req.write(string, flush)
179
self.apache_req.write(string, flush)
237
182
"""Flushes the output buffer."""
247
192
"""Reads at most len bytes directly from the client. (See mod_python
248
193
Request.read)."""
250
return self.apache_req.read()
195
self.apache_req.read()
252
return self.apache_req.read(len)
197
self.apache_req.read(len)
254
def throw_error(self, httpcode, message=None):
199
def throw_error(self, httpcode):
255
200
"""Writes out an HTTP error of the specified code. Raises an exception
256
201
which is caught by the dispatch or web server, so any code following
257
202
this call will not be executed.
272
217
mod_python.util.redirect(self.apache_req, location)
274
def add_cookie(self, cookie, value=None, **attributes):
275
"""Inserts a cookie into this request object's headers."""
277
Cookie.add_cookie(self.apache_req, cookie)
279
Cookie.add_cookie(self.apache_req, cookie, value, **attributes)
281
def get_session(self):
282
"""Returns a mod_python Session object for this request.
283
Note that this is dependent on mod_python and may need to change
284
interface if porting away from mod_python."""
285
# Cache the session object and set the timeout to 24 hours.
286
if not hasattr(self, 'session'):
287
self.session = Session.FileSession(self.apache_req,
288
timeout = 60 * 60 * 24)
291
def get_fieldstorage(self):
292
"""Returns a mod_python FieldStorage object for this request.
293
Note that this is dependent on mod_python and may need to change
294
interface if porting away from mod_python."""
295
# Cache the fieldstorage object
296
if not hasattr(self, 'fields'):
297
self.fields = util.FieldStorage(self.apache_req)
300
def get_cgi_environ(self):
301
"""Returns the CGI environment emulation for this request. (Calls
302
add_common_vars). The environment is returned as a mapping
303
compatible with os.environ."""
304
if not self.got_common_vars:
305
self.apache_req.add_common_vars()
306
self.got_common_vars = True
307
return self.apache_req.subprocess_env
310
def get_http_codename(code):
311
"""Given a HTTP error code int, returns a (name, description)
312
pair, suitable for displaying to the user.
313
May return (None,None) if code is unknown.
314
Only lists common 4xx and 5xx codes (since this is just used
315
to display throw_error error messages).
318
return http_codenames[code]
322
# Human strings for HTTP response codes
324
Request.HTTP_BAD_REQUEST:
326
"Your browser sent a request IVLE did not understand."),
327
Request.HTTP_UNAUTHORIZED:
329
"You are not allowed to view this part of IVLE."),
330
Request.HTTP_FORBIDDEN:
332
"You are not allowed to view this part of IVLE."),
333
Request.HTTP_NOT_FOUND:
335
"The application or file you requested does not exist."),
336
Request.HTTP_METHOD_NOT_ALLOWED:
337
("Method Not Allowed",
338
"Your browser is interacting with IVLE in the wrong way."
339
"This is probably a bug in IVLE. "
340
"Please report it to the administrators."),
341
Request.HTTP_INTERNAL_SERVER_ERROR:
342
("Internal Server Error",
343
"An unknown error occured in IVLE."),
344
Request.HTTP_NOT_IMPLEMENTED:
346
"The application or file you requested has not been implemented "
348
Request.HTTP_SERVICE_UNAVAILABLE:
349
("Service Unavailable",
350
"IVLE is currently experiencing technical difficulties. "
351
"Please try again later."),