28
from mod_python import (util, Session, Cookie)
28
from mod_python import (util, Session)
30
import plugins.console
33
32
"""An IVLE request object. This is presented to the IVLE apps as a way of
44
43
String. The path specified in the URL *not including* the
45
44
application or the IVLE location prefix. eg. a URL of
46
45
"/ivle/files/joe/myfiles" has a path of "joe/myfiles".
48
User object. Details of the user who is currently logged in, or
47
String. Login name of the user who is currently logged in, or
51
50
String. Hostname the server is running on.
81
80
in the head, if write_html_head_foot is True.
82
81
URLs should be relative to the IVLE root; they will be fixed up
83
82
to be site-relative.
85
List of strings. Write a list of JS function names, and they
86
will be added as window.addListener('load', ..., false); calls
87
in the head, if write_html_head_foot is True.
88
This is the propper way to specify functions that need to run at
90
83
write_html_head_foot (write)
91
84
Boolean. If True, dispatch assumes that this is an XHTML page, and
92
85
will immediately write a full HTML head, open the body element,
185
178
# Split the given path into the app (top-level dir) and sub-path
186
179
# (after first stripping away the root directory)
187
180
path = common.util.unmake_path(req.uri)
188
(self.app, self.path) = (common.util.split_path(path))
185
(self.app, self.path) = (common.util.split_path(path))
190
187
self.hostname = req.hostname
191
188
self.headers_in = req.headers_in
192
189
self.headers_out = req.headers_out
206
202
"""Writes out the HTTP and HTML headers before any real data is
208
204
self.headers_written = True
210
# app is the App object for the chosen app
212
app = conf.apps.app_url[self.app]
216
# Write any final modifications to header content
217
if app and app.useconsole and self.user:
218
plugins.console.insert_scripts_styles(self.scripts, self.styles, \
221
205
# Prepare the HTTP and HTML headers before the first write is made
222
206
if self.content_type != None:
223
207
self.apache_req.content_type = self.content_type
268
252
return self.apache_req.read(len)
270
def throw_error(self, httpcode, message=None):
254
def throw_error(self, httpcode):
271
255
"""Writes out an HTTP error of the specified code. Raises an exception
272
256
which is caught by the dispatch or web server, so any code following
273
257
this call will not be executed.
275
259
httpcode: An HTTP response status code. Pass a constant from the
278
raise common.util.IVLEError(httpcode, message)
262
raise mod_python.apache.SERVER_RETURN, httpcode
280
264
def throw_redirect(self, location):
281
265
"""Writes out an HTTP redirect to the specified URL. Raises an
288
272
mod_python.util.redirect(self.apache_req, location)
290
def add_cookie(self, cookie, value=None, **attributes):
291
"""Inserts a cookie into this request object's headers."""
293
Cookie.add_cookie(self.apache_req, cookie)
295
Cookie.add_cookie(self.apache_req, cookie, value, **attributes)
297
274
def get_session(self):
298
275
"""Returns a mod_python Session object for this request.
299
276
Note that this is dependent on mod_python and may need to change
300
277
interface if porting away from mod_python."""
301
# Cache the session object and set the timeout to 24 hours.
278
# Cache the session object
302
279
if not hasattr(self, 'session'):
303
self.session = Session.FileSession(self.apache_req,
304
timeout = 60 * 60 * 24)
280
self.session = Session.FileSession(self.apache_req)
305
281
return self.session
307
283
def get_fieldstorage(self):
321
297
self.apache_req.add_common_vars()
322
298
self.got_common_vars = True
323
299
return self.apache_req.subprocess_env
326
def get_http_codename(code):
327
"""Given a HTTP error code int, returns a (name, description)
328
pair, suitable for displaying to the user.
329
May return (None,None) if code is unknown.
330
Only lists common 4xx and 5xx codes (since this is just used
331
to display throw_error error messages).
334
return http_codenames[code]
338
# Human strings for HTTP response codes
340
Request.HTTP_BAD_REQUEST:
342
"Your browser sent a request IVLE did not understand."),
343
Request.HTTP_UNAUTHORIZED:
345
"You are not allowed to view this part of IVLE."),
346
Request.HTTP_FORBIDDEN:
348
"You are not allowed to view this part of IVLE."),
349
Request.HTTP_NOT_FOUND:
351
"The application or file you requested does not exist."),
352
Request.HTTP_METHOD_NOT_ALLOWED:
353
("Method Not Allowed",
354
"Your browser is interacting with IVLE in the wrong way."
355
"This is probably a bug in IVLE. "
356
"Please report it to the administrators."),
357
Request.HTTP_INTERNAL_SERVER_ERROR:
358
("Internal Server Error",
359
"An unknown error occured in IVLE."),
360
Request.HTTP_NOT_IMPLEMENTED:
362
"The application or file you requested has not been implemented "
364
Request.HTTP_SERVICE_UNAVAILABLE:
365
("Service Unavailable",
366
"IVLE is currently experiencing technical difficulties. "
367
"Please try again later."),