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
46
String. Login name of the user who is currently logged in, or
50
String. Hostname the server is running on.
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Table object representing headers sent by the client.
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headers_out (read, can be written to)
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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
57
configured in conf.py. Note that public mode requests do not
58
have an app (app is set to None).
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50
Int. Response status number. Use one of the status codes defined
69
58
String. HTML page title. Used if write_html_head_foot is True, in
70
59
the HTML title element text.
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List of strings. Write a list of URLs to CSS files here, and they
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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
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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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60
write_html_head_foot (write)
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61
Boolean. If True, dispatch assumes that this is an XHTML page, and
85
62
will immediately write a full HTML head, open the body element,
165
142
self.func_write_html_head = write_html_head
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143
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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145
# Inherit values for the input members
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146
self.method = req.method
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147
self.uri = req.uri
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148
# Split the given path into the app (top-level dir) and sub-path
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149
# (after first stripping away the root directory)
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path = common.util.unmake_path(req.uri)
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
150
(self.app, self.path) = (
151
common.util.split_path(common.util.unmake_path(req.uri)))
191
154
# Default values for the output members
192
self.status = Request.HTTP_OK
155
self.status = Request.OK
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156
self.content_type = None # Use Apache's default
194
157
self.location = None
195
158
self.title = None # Will be set by dispatch before passing to app
198
159
self.write_html_head_foot = False
199
self.got_common_vars = False
201
161
def __writeheaders(self):
202
162
"""Writes out the HTTP and HTML headers before any real data is
225
185
if not self.headers_written:
226
186
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)
187
self.apache_req.write(string, flush)
237
190
"""Flushes the output buffer."""
247
200
"""Reads at most len bytes directly from the client. (See mod_python
248
201
Request.read)."""
250
return self.apache_req.read()
203
self.apache_req.read()
252
return self.apache_req.read(len)
205
self.apache_req.read(len)
254
def throw_error(self, httpcode, message=None):
207
def throw_error(self, httpcode):
255
208
"""Writes out an HTTP error of the specified code. Raises an exception
256
209
which is caught by the dispatch or web server, so any code following
257
210
this call will not be executed.
259
212
httpcode: An HTTP response status code. Pass a constant from the
262
raise common.util.IVLEError(httpcode, message)
215
raise mod_python.apache.SERVER_RETURN, httpcode
264
217
def throw_redirect(self, location):
265
218
"""Writes out an HTTP redirect to the specified URL. Raises an
272
225
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
227
def get_session(self):
282
228
"""Returns a mod_python Session object for this request.
283
229
Note that this is dependent on mod_python and may need to change
284
230
interface if porting away from mod_python."""
285
# Cache the session object and set the timeout to 24 hours.
231
# Cache the session object
286
232
if not hasattr(self, 'session'):
287
self.session = Session.FileSession(self.apache_req,
288
timeout = 60 * 60 * 24)
233
self.session = Session.Session(self.apache_req)
289
234
return self.session
291
236
def get_fieldstorage(self):
296
241
if not hasattr(self, 'fields'):
297
242
self.fields = util.FieldStorage(self.apache_req)
298
243
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."),