Mercurial > p > roundup > code
comparison roundup/cgi/client.py @ 1469:79d8956de3f5
implemented last-modified and if-modified-since support
| author | Richard Jones <richard@users.sourceforge.net> |
|---|---|
| date | Wed, 26 Feb 2003 04:51:41 +0000 |
| parents | f57759a5ee1a |
| children | 77942e0a12fe |
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| 1468:f57759a5ee1a | 1469:79d8956de3f5 |
|---|---|
| 1 # $Id: client.py,v 1.98 2003-02-26 04:08:04 richard Exp $ | 1 # $Id: client.py,v 1.99 2003-02-26 04:51:41 richard Exp $ |
| 2 | 2 |
| 3 __doc__ = """ | 3 __doc__ = """ |
| 4 WWW request handler (also used in the stand-alone server). | 4 WWW request handler (also used in the stand-alone server). |
| 5 """ | 5 """ |
| 6 | 6 |
| 7 import os, os.path, cgi, StringIO, urlparse, re, traceback, mimetypes, urllib | 7 import os, os.path, cgi, StringIO, urlparse, re, traceback, mimetypes, urllib |
| 8 import binascii, Cookie, time, random, MimeWriter, smtplib, socket, quopri | 8 import binascii, Cookie, time, random, MimeWriter, smtplib, socket, quopri |
| 9 import stat, rfc822 | |
| 9 | 10 |
| 10 from roundup import roundupdb, date, hyperdb, password | 11 from roundup import roundupdb, date, hyperdb, password |
| 11 from roundup.i18n import _ | 12 from roundup.i18n import _ |
| 12 from roundup.cgi.templating import Templates, HTMLRequest, NoTemplate | 13 from roundup.cgi.templating import Templates, HTMLRequest, NoTemplate |
| 13 from roundup.cgi import cgitb | 14 from roundup.cgi import cgitb |
| 19 class Unauthorised(HTTPException): | 20 class Unauthorised(HTTPException): |
| 20 pass | 21 pass |
| 21 class NotFound(HTTPException): | 22 class NotFound(HTTPException): |
| 22 pass | 23 pass |
| 23 class Redirect(HTTPException): | 24 class Redirect(HTTPException): |
| 25 pass | |
| 26 class NotModified(HTTPException): | |
| 24 pass | 27 pass |
| 25 | 28 |
| 26 # XXX actually _use_ FormError | 29 # XXX actually _use_ FormError |
| 27 class FormError(ValueError): | 30 class FormError(ValueError): |
| 28 ''' An "expected" exception occurred during form parsing. | 31 ''' An "expected" exception occurred during form parsing. |
| 233 self.response_code = 302 | 236 self.response_code = 302 |
| 234 self.write('Redirecting to <a href="%s">%s</a>'%(url, url)) | 237 self.write('Redirecting to <a href="%s">%s</a>'%(url, url)) |
| 235 except SendFile, designator: | 238 except SendFile, designator: |
| 236 self.serve_file(designator) | 239 self.serve_file(designator) |
| 237 except SendStaticFile, file: | 240 except SendStaticFile, file: |
| 238 self.serve_static_file(str(file)) | 241 try: |
| 242 self.serve_static_file(str(file)) | |
| 243 except NotModified: | |
| 244 # send the 304 response | |
| 245 self.request.send_response(304) | |
| 246 self.request.end_headers() | |
| 239 except Unauthorised, message: | 247 except Unauthorised, message: |
| 240 self.classname = None | 248 self.classname = None |
| 241 self.template = '' | 249 self.template = '' |
| 242 self.error_message.append(message) | 250 self.error_message.append(message) |
| 243 self.write(self.renderContext()) | 251 self.write(self.renderContext()) |
| 420 file = self.db.file | 428 file = self.db.file |
| 421 self.additional_headers['Content-Type'] = file.get(nodeid, 'type') | 429 self.additional_headers['Content-Type'] = file.get(nodeid, 'type') |
| 422 self.write(file.get(nodeid, 'content')) | 430 self.write(file.get(nodeid, 'content')) |
| 423 | 431 |
| 424 def serve_static_file(self, file): | 432 def serve_static_file(self, file): |
| 433 # see if there's an if-modified-since... | |
| 434 ims = self.request.headers.getheader('if-modified-since') | |
| 435 # cgi will put the header in the env var | |
| 436 if not ims and self.env.has_key('HTTP_IF_MODIFIED_SINCE'): | |
| 437 ims = self.env['HTTP_IF_MODIFIED_SINCE'] | |
| 438 filename = os.path.join(self.instance.config.TEMPLATES, file) | |
| 439 lmt = os.stat(filename)[stat.ST_MTIME] | |
| 440 if ims: | |
| 441 ims = rfc822.parsedate(ims)[:6] | |
| 442 lmtt = time.gmtime(lmt)[:6] | |
| 443 if lmtt <= ims: | |
| 444 raise NotModified | |
| 445 | |
| 425 # we just want to serve up the file named | 446 # we just want to serve up the file named |
| 426 mt = mimetypes.guess_type(str(file))[0] | 447 mt = mimetypes.guess_type(str(file))[0] |
| 448 if not mt: | |
| 449 mt = 'text/plain' | |
| 427 self.additional_headers['Content-Type'] = mt | 450 self.additional_headers['Content-Type'] = mt |
| 428 self.write(open(os.path.join(self.instance.config.TEMPLATES, | 451 self.additional_headers['Last-Modifed'] = rfc822.formatdate(lmt) |
| 429 file)).read()) | 452 self.write(open(filename).read()) |
| 430 | 453 |
| 431 def renderContext(self): | 454 def renderContext(self): |
| 432 ''' Return a PageTemplate for the named page | 455 ''' Return a PageTemplate for the named page |
| 433 ''' | 456 ''' |
| 434 name = self.classname | 457 name = self.classname |