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44
String. The path specified in the URL *not including* the
43
45
application or the IVLE location prefix. eg. a URL of
44
46
"/ivle/files/joe/myfiles" has a path of "joe/myfiles".
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String. Login name of the user who is currently logged in, or
48
User object. Details of the user who is currently logged in, or
51
String. Hostname the server is running on.
49
53
Table object representing headers sent by the client.
50
54
headers_out (read, can be written to)
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55
Table object representing headers to be sent to the client.
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Bool. True if the request came for the "public host" as
58
configured in conf.py. Note that public mode requests do not
59
have an app (app is set to None).
54
62
Int. Response status number. Use one of the status codes defined
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81
in the head, if write_html_head_foot is True.
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URLs should be relative to the IVLE root; they will be fixed up
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83
to be site-relative.
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List of strings. Write a list of JS function names, and they
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will be added as window.addListener('load', ..., false); calls
87
in the head, if write_html_head_foot is True.
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This is the propper way to specify functions that need to run at
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90
write_html_head_foot (write)
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Boolean. If True, dispatch assumes that this is an XHTML page, and
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92
will immediately write a full HTML head, open the body element,
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172
self.func_write_html_head = write_html_head
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self.headers_written = False
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# Determine if the browser used the public host name to make the
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# request (in which case we are in "public mode")
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if req.hostname == conf.public_host:
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self.publicmode = True
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self.publicmode = False
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# Inherit values for the input members
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183
self.method = req.method
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184
self.uri = req.uri
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185
# Split the given path into the app (top-level dir) and sub-path
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# (after first stripping away the root directory)
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(self.app, self.path) = (
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common.util.split_path(common.util.unmake_path(req.uri)))
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path = common.util.unmake_path(req.uri)
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(self.app, self.path) = (common.util.split_path(path))
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self.hostname = req.hostname
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191
self.headers_in = req.headers_in
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192
self.headers_out = req.headers_out
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198
self.title = None # Will be set by dispatch before passing to app
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200
self.scripts = []
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self.scripts_init = []
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202
self.write_html_head_foot = False
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self.got_common_vars = False
181
205
def __writeheaders(self):
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"""Writes out the HTTP and HTML headers before any real data is
184
208
self.headers_written = True
210
# app is the App object for the chosen app
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app = conf.apps.app_url[self.app]
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# 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, \
185
221
# Prepare the HTTP and HTML headers before the first write is made
186
222
if self.content_type != None:
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223
self.apache_req.content_type = self.content_type
205
241
if not self.headers_written:
206
242
self.__writeheaders()
207
self.apache_req.write(string, flush)
243
if isinstance(string, unicode):
244
# Encode unicode strings as UTF-8
245
# (Otherwise cannot handle being written to a bytestream)
246
self.apache_req.write(string.encode('utf8'), flush)
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# 8-bit clean strings just get written directly.
249
# This includes binary strings.
250
self.apache_req.write(string, flush)
210
253
"""Flushes the output buffer."""
220
263
"""Reads at most len bytes directly from the client. (See mod_python
221
264
Request.read)."""
223
self.apache_req.read()
266
return self.apache_req.read()
225
self.apache_req.read(len)
268
return self.apache_req.read(len)
227
def throw_error(self, httpcode):
270
def throw_error(self, httpcode, message=None):
228
271
"""Writes out an HTTP error of the specified code. Raises an exception
229
272
which is caught by the dispatch or web server, so any code following
230
273
this call will not be executed.
232
275
httpcode: An HTTP response status code. Pass a constant from the
235
raise mod_python.apache.SERVER_RETURN, httpcode
278
raise common.util.IVLEError(httpcode, message)
237
280
def throw_redirect(self, location):
238
281
"""Writes out an HTTP redirect to the specified URL. Raises an
245
288
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)
247
297
def get_session(self):
248
298
"""Returns a mod_python Session object for this request.
249
299
Note that this is dependent on mod_python and may need to change
250
300
interface if porting away from mod_python."""
251
# Cache the session object
301
# Cache the session object and set the timeout to 24 hours.
252
302
if not hasattr(self, 'session'):
253
self.session = Session.Session(self.apache_req)
303
self.session = Session.FileSession(self.apache_req,
304
timeout = 60 * 60 * 24)
254
305
return self.session
256
307
def get_fieldstorage(self):
261
312
if not hasattr(self, 'fields'):
262
313
self.fields = util.FieldStorage(self.apache_req)
263
314
return self.fields
316
def get_cgi_environ(self):
317
"""Returns the CGI environment emulation for this request. (Calls
318
add_common_vars). The environment is returned as a mapping
319
compatible with os.environ."""
320
if not self.got_common_vars:
321
self.apache_req.add_common_vars()
322
self.got_common_vars = True
323
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."),