42
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".
46
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.
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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
58
configured in conf.py. Note that public mode requests do not
59
have an app (app is set to None).
50
62
Int. Response status number. Use one of the status codes defined
58
70
String. HTML page title. Used if write_html_head_foot is True, in
59
71
the HTML title element text.
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List of strings. Write a list of URLs to CSS files here, and they
74
will be incorporated as <link rel="stylesheet" type="text/css">
75
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
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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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)
61
91
Boolean. If True, dispatch assumes that this is an XHTML page, and
62
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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173
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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self.headers_in = req.headers_in
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self.headers_out = req.headers_out
154
194
# Default values for the output members
155
self.status = Request.OK
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self.status = Request.HTTP_OK
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196
self.content_type = None # Use Apache's default
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197
self.location = None
158
198
self.title = None # Will be set by dispatch before passing to app
201
self.scripts_init = []
159
202
self.write_html_head_foot = False
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# In some cases we don't want the template JS (such as the username
204
# and public FQDN) in the output HTML. In that case, set this to 0.
205
self.write_javascript_settings = True
206
self.got_common_vars = False
161
208
def __writeheaders(self):
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209
"""Writes out the HTTP and HTML headers before any real data is
164
211
self.headers_written = True
213
# app is the App object for the chosen app
215
app = conf.apps.app_url[self.app]
219
# Write any final modifications to header content
220
if app and app.useconsole and self.user:
221
plugins.console.insert_scripts_styles(self.scripts, self.styles, \
165
224
# Prepare the HTTP and HTML headers before the first write is made
166
225
if self.content_type != None:
167
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self.apache_req.content_type = self.content_type
185
244
if not self.headers_written:
186
245
self.__writeheaders()
187
self.apache_req.write(string, flush)
246
if isinstance(string, unicode):
247
# Encode unicode strings as UTF-8
248
# (Otherwise cannot handle being written to a bytestream)
249
self.apache_req.write(string.encode('utf8'), flush)
251
# 8-bit clean strings just get written directly.
252
# This includes binary strings.
253
self.apache_req.write(string, flush)
256
"""Log out the current user by destroying the session state.
257
Then redirect to the top-level IVLE page."""
258
# List of cookies that IVLE uses (to be removed at logout)
259
ivle_cookies = ["ivleforumcookie", "clipboard"]
261
if hasattr(self, 'session'):
262
self.session.invalidate()
263
self.session.delete()
264
# Invalidates all IVLE cookies
265
all_cookies = Cookie.get_cookies(self)
266
for cookie in all_cookies:
267
if cookie in ivle_cookies:
268
self.add_cookie(Cookie.Cookie(cookie,'',expires=1,path='/'))
269
self.throw_redirect(common.util.make_path(''))
190
273
"""Flushes the output buffer."""
200
283
"""Reads at most len bytes directly from the client. (See mod_python
201
284
Request.read)."""
203
self.apache_req.read()
286
return self.apache_req.read()
205
self.apache_req.read(len)
288
return self.apache_req.read(len)
207
def throw_error(self, httpcode):
290
def throw_error(self, httpcode, message=None):
208
291
"""Writes out an HTTP error of the specified code. Raises an exception
209
292
which is caught by the dispatch or web server, so any code following
210
293
this call will not be executed.
212
295
httpcode: An HTTP response status code. Pass a constant from the
215
raise mod_python.apache.SERVER_RETURN, httpcode
298
raise common.util.IVLEError(httpcode, message)
217
300
def throw_redirect(self, location):
218
301
"""Writes out an HTTP redirect to the specified URL. Raises an
225
308
mod_python.util.redirect(self.apache_req, location)
310
def add_cookie(self, cookie, value=None, **attributes):
311
"""Inserts a cookie into this request object's headers."""
313
Cookie.add_cookie(self.apache_req, cookie)
315
Cookie.add_cookie(self.apache_req, cookie, value, **attributes)
227
317
def get_session(self):
228
318
"""Returns a mod_python Session object for this request.
229
319
Note that this is dependent on mod_python and may need to change
230
320
interface if porting away from mod_python."""
231
# Cache the session object
321
# Cache the session object and set the timeout to 24 hours.
232
322
if not hasattr(self, 'session'):
233
self.session = Session.Session(self.apache_req)
323
self.session = Session.FileSession(self.apache_req,
324
timeout = 60 * 60 * 24)
234
325
return self.session
236
327
def get_fieldstorage(self):
241
332
if not hasattr(self, 'fields'):
242
333
self.fields = util.FieldStorage(self.apache_req)
243
334
return self.fields
336
def get_cgi_environ(self):
337
"""Returns the CGI environment emulation for this request. (Calls
338
add_common_vars). The environment is returned as a mapping
339
compatible with os.environ."""
340
if not self.got_common_vars:
341
self.apache_req.add_common_vars()
342
self.got_common_vars = True
343
return self.apache_req.subprocess_env
346
def get_http_codename(code):
347
"""Given a HTTP error code int, returns a (name, description)
348
pair, suitable for displaying to the user.
349
May return (None,None) if code is unknown.
350
Only lists common 4xx and 5xx codes (since this is just used
351
to display throw_error error messages).
354
return http_codenames[code]
358
# Human strings for HTTP response codes
360
Request.HTTP_BAD_REQUEST:
362
"Your browser sent a request IVLE did not understand."),
363
Request.HTTP_UNAUTHORIZED:
365
"You are not allowed to view this part of IVLE."),
366
Request.HTTP_FORBIDDEN:
368
"You are not allowed to view this part of IVLE."),
369
Request.HTTP_NOT_FOUND:
371
"The application or file you requested does not exist."),
372
Request.HTTP_METHOD_NOT_ALLOWED:
373
("Method Not Allowed",
374
"Your browser is interacting with IVLE in the wrong way."
375
"This is probably a bug in IVLE. "
376
"Please report it to the administrators."),
377
Request.HTTP_INTERNAL_SERVER_ERROR:
378
("Internal Server Error",
379
"An unknown error occured in IVLE."),
380
Request.HTTP_NOT_IMPLEMENTED:
382
"The application or file you requested has not been implemented "
384
Request.HTTP_SERVICE_UNAVAILABLE:
385
("Service Unavailable",
386
"IVLE is currently experiencing technical difficulties. "
387
"Please try again later."),