42
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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
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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)
51
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
73
81
in the head, if write_html_head_foot is True.
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82
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
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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.path) = (common.util.split_path(path))
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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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195
self.headers_in = req.headers_in
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196
self.headers_out = req.headers_out
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202
self.title = None # Will be set by dispatch before passing to app
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204
self.scripts = []
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self.scripts_init = []
179
206
self.write_html_head_foot = False
207
self.got_common_vars = False
181
209
def __writeheaders(self):
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"""Writes out the HTTP and HTML headers before any real data is
184
212
self.headers_written = True
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# app is the App object for the chosen app
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app = conf.apps.app_url[conf.apps.default_app]
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app = conf.apps.app_url[self.app]
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# Write any final modifications to header content
221
if app.useconsole and self.user:
222
plugins.console.insert_scripts_styles(self.scripts, self.styles, \
185
225
# Prepare the HTTP and HTML headers before the first write is made
186
226
if self.content_type != None:
187
227
self.apache_req.content_type = self.content_type
205
245
if not self.headers_written:
206
246
self.__writeheaders()
207
self.apache_req.write(string, flush)
247
if isinstance(string, unicode):
248
# Encode unicode strings as UTF-8
249
# (Otherwise cannot handle being written to a bytestream)
250
self.apache_req.write(string.encode('utf8'), flush)
252
# 8-bit clean strings just get written directly.
253
# This includes binary strings.
254
self.apache_req.write(string, flush)
210
257
"""Flushes the output buffer."""
220
267
"""Reads at most len bytes directly from the client. (See mod_python
221
268
Request.read)."""
223
self.apache_req.read()
270
return self.apache_req.read()
225
self.apache_req.read(len)
272
return self.apache_req.read(len)
227
def throw_error(self, httpcode):
274
def throw_error(self, httpcode, message=None):
228
275
"""Writes out an HTTP error of the specified code. Raises an exception
229
276
which is caught by the dispatch or web server, so any code following
230
277
this call will not be executed.
232
279
httpcode: An HTTP response status code. Pass a constant from the
235
raise mod_python.apache.SERVER_RETURN, httpcode
282
raise common.util.IVLEError(httpcode, message)
237
284
def throw_redirect(self, location):
238
285
"""Writes out an HTTP redirect to the specified URL. Raises an
245
292
mod_python.util.redirect(self.apache_req, location)
294
def add_cookie(self, cookie, value=None, **attributes):
295
"""Inserts a cookie into this request object's headers."""
297
Cookie.add_cookie(self.apache_req, cookie)
299
Cookie.add_cookie(self.apache_req, cookie, value, **attributes)
247
301
def get_session(self):
248
302
"""Returns a mod_python Session object for this request.
249
303
Note that this is dependent on mod_python and may need to change
250
304
interface if porting away from mod_python."""
251
# Cache the session object
305
# Cache the session object and set the timeout to 24 hours.
252
306
if not hasattr(self, 'session'):
253
self.session = Session.Session(self.apache_req)
307
self.session = Session.FileSession(self.apache_req,
308
timeout = 60 * 60 * 24)
254
309
return self.session
256
311
def get_fieldstorage(self):
261
316
if not hasattr(self, 'fields'):
262
317
self.fields = util.FieldStorage(self.apache_req)
263
318
return self.fields
320
def get_cgi_environ(self):
321
"""Returns the CGI environment emulation for this request. (Calls
322
add_common_vars). The environment is returned as a mapping
323
compatible with os.environ."""
324
if not self.got_common_vars:
325
self.apache_req.add_common_vars()
326
self.got_common_vars = True
327
return self.apache_req.subprocess_env
330
def get_http_codename(code):
331
"""Given a HTTP error code int, returns a (name, description)
332
pair, suitable for displaying to the user.
333
May return (None,None) if code is unknown.
334
Only lists common 4xx and 5xx codes (since this is just used
335
to display throw_error error messages).
338
return http_codenames[code]
342
# Human strings for HTTP response codes
344
Request.HTTP_BAD_REQUEST:
346
"Your browser sent a request IVLE did not understand."),
347
Request.HTTP_UNAUTHORIZED:
349
"You are not allowed to view this part of IVLE."),
350
Request.HTTP_FORBIDDEN:
352
"You are not allowed to view this part of IVLE."),
353
Request.HTTP_NOT_FOUND:
355
"The application or file you requested does not exist."),
356
Request.HTTP_METHOD_NOT_ALLOWED:
357
("Method Not Allowed",
358
"Your browser is interacting with IVLE in the wrong way."
359
"This is probably a bug in IVLE. "
360
"Please report it to the administrators."),
361
Request.HTTP_INTERNAL_SERVER_ERROR:
362
("Internal Server Error",
363
"An unknown error occured in IVLE."),
364
Request.HTTP_NOT_IMPLEMENTED:
366
"The application or file you requested has not been implemented "
368
Request.HTTP_SERVICE_UNAVAILABLE:
369
("Service Unavailable",
370
"IVLE is currently experiencing technical difficulties. "
371
"Please try again later."),