43
42
String. The path specified in the URL *not including* the
44
43
application or the IVLE location prefix. eg. a URL of
45
44
"/ivle/files/joe/myfiles" has a path of "joe/myfiles".
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User object. Details of the user who is currently logged in, or
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String. Login name of the user who is currently logged in, or
50
String. Hostname the server is running on.
52
49
Table object representing headers sent by the client.
53
50
headers_out (read, can be written to)
54
51
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
54
Int. Response status number. Use one of the status codes defined
69
62
String. HTML page title. Used if write_html_head_foot is True, in
70
63
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">
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elements 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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List of strings. Write a list of URLs to JS files here, and they
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will be incorporated as <script type="text/javascript"> elements
80
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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64
write_html_head_foot (write)
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65
Boolean. If True, dispatch assumes that this is an XHTML page, and
85
66
will immediately write a full HTML head, open the body element,
165
146
self.func_write_html_head = write_html_head
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147
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:
171
self.publicmode = True
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self.publicmode = False
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149
# Inherit values for the input members
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150
self.method = req.method
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151
self.uri = req.uri
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152
# Split the given path into the app (top-level dir) and sub-path
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153
# (after first stripping away the root directory)
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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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(self.app, self.path) = (
155
common.util.split_path(common.util.unmake_path(req.uri)))
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157
self.headers_in = req.headers_in
189
158
self.headers_out = req.headers_out
191
160
# Default values for the output members
192
self.status = Request.HTTP_OK
161
self.status = Request.OK
193
162
self.content_type = None # Use Apache's default
194
163
self.location = None
195
164
self.title = None # Will be set by dispatch before passing to app
198
165
self.write_html_head_foot = False
199
self.got_common_vars = False
201
167
def __writeheaders(self):
202
168
"""Writes out the HTTP and HTML headers before any real data is
225
191
if not self.headers_written:
226
192
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)
193
self.apache_req.write(string, flush)
237
196
"""Flushes the output buffer."""
247
206
"""Reads at most len bytes directly from the client. (See mod_python
248
207
Request.read)."""
250
return self.apache_req.read()
209
self.apache_req.read()
252
return self.apache_req.read(len)
211
self.apache_req.read(len)
254
def throw_error(self, httpcode, message=None):
213
def throw_error(self, httpcode):
255
214
"""Writes out an HTTP error of the specified code. Raises an exception
256
215
which is caught by the dispatch or web server, so any code following
257
216
this call will not be executed.
259
218
httpcode: An HTTP response status code. Pass a constant from the
262
raise common.util.IVLEError(httpcode, message)
221
raise mod_python.apache.SERVER_RETURN, httpcode
264
223
def throw_redirect(self, location):
265
224
"""Writes out an HTTP redirect to the specified URL. Raises an
272
231
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
233
def get_session(self):
282
234
"""Returns a mod_python Session object for this request.
283
235
Note that this is dependent on mod_python and may need to change
284
236
interface if porting away from mod_python."""
285
# Cache the session object and set the timeout to 24 hours.
237
# Cache the session object
286
238
if not hasattr(self, 'session'):
287
self.session = Session.FileSession(self.apache_req,
288
timeout = 60 * 60 * 24)
239
self.session = Session.Session(self.apache_req)
289
240
return self.session
291
242
def get_fieldstorage(self):
296
247
if not hasattr(self, 'fields'):
297
248
self.fields = util.FieldStorage(self.apache_req)
298
249
return self.fields
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."),