python类http_date()的实例源码

def process_response(self, request, response):
        response['Date'] = http_date()
        if not response.streaming and not response.has_header('Content-Length'):
            response['Content-Length'] = str(len(response.content))

        # If-None-Match must be ignored if original result would be anything
        # other than a 2XX or 304 status. 304 status would result in no change.
        # http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.26
        if 200 <= response.status_code < 300 and response.has_header('ETag'):
            if_none_match = request.META.get('HTTP_IF_NONE_MATCH')
            if if_none_match == response['ETag']:
                # Setting the status is enough here. The response handling path
                # automatically removes content for this status code (in
                # http.conditional_content_removal()).
                response.status_code = 304

        # If-Modified-Since must be ignored if the original result was not a 200.
        # http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.25
        if response.status_code == 200 and response.has_header('Last-Modified'):
            if_modified_since = request.META.get('HTTP_IF_MODIFIED_SINCE')
            if if_modified_since is not None:
                if_modified_since = parse_http_date_safe(if_modified_since)
            if if_modified_since is not None:
                last_modified = parse_http_date_safe(response['Last-Modified'])
                if last_modified is not None and last_modified <= if_modified_since:
                    # Setting the status code is enough here (same reasons as
                    # above).
                    response.status_code = 304

        return response

def staticfiles(request, file):
    """
    Simple view for serving static files directly from STATICFILES_DIRS.

    Does not allow subdirectories. Does do If-Modified-Since, though.

    Based on `django.views.static.serve`.
    """
    if '/..\\' in file:
        raise Http404
    if posixpath.normpath(file) != file:
        raise Http404

    for static_file_dir in settings.STATICFILES_DIRS:
        fullpath = os.path.abspath(os.path.join(static_file_dir, file))
        if not fullpath.startswith(static_file_dir):
            raise Http404
        try:
            st = os.stat(fullpath)
        except FileNotFoundError:
            continue
        break
    else:
        raise Http404

    if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'),
                              st.st_mtime, st.st_size):
        return HttpResponseNotModified()
    content_type, encoding = mimetypes.guess_type(fullpath)
    content_type = content_type or 'application/octet-stream'
    response = FileResponse(open(fullpath, 'rb'), content_type=content_type)
    response['Last-Modified'] = http_date(st.st_mtime)
    if stat.S_ISREG(st.st_mode):
        response['Content-Length'] = st.st_size
    if encoding:
        response['Content-Encoding'] = encoding
    return response

def __call__(self, request, *args, **kwargs):
        try:
            obj = self.get_object(request, *args, **kwargs)
        except ObjectDoesNotExist:
            raise Http404('Feed object does not exist.')
        feedgen = self.get_feed(obj, request)
        response = HttpResponse(content_type=feedgen.content_type)
        if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
            # if item_pubdate or item_updateddate is defined for the feed, set
            # header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
            response['Last-Modified'] = http_date(
                timegm(feedgen.latest_post_date().utctimetuple()))
        feedgen.write(response, 'utf-8')
        return response

def __call__(self, request, *args, **kwargs):
        try:
            obj = self.get_object(request, *args, **kwargs)
        except ObjectDoesNotExist:
            raise Http404('Feed object does not exist.')
        feedgen = self.get_feed(obj, request)
        response = HttpResponse(content_type=feedgen.content_type)
        if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
            # if item_pubdate or item_updateddate is defined for the feed, set
            # header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
            response['Last-Modified'] = http_date(
                timegm(feedgen.latest_post_date().utctimetuple()))
        feedgen.write(response, 'utf-8')
        return response

def serve(private_file):
        # Support If-Last-Modified
        mtime = private_file.modified_time.timestamp()
        size = private_file.size
        if not was_modified_since(private_file.request.META.get('HTTP_IF_MODIFIED_SINCE'), mtime, size):
            return HttpResponseNotModified()

        # As of Django 1.8, FileResponse triggers 'wsgi.file_wrapper' in Django's WSGIHandler.
        # This uses efficient file streaming, such as sendfile() in uWSGI.
        # When the WSGI container doesn't provide 'wsgi.file_wrapper', it submits the file in 4KB chunks.
        response = FileResponse(private_file.open())
        response['Content-Type'] = private_file.content_type
        response['Content-Length'] = size
        response["Last-Modified"] = http_date(mtime)
        return response

def __call__(self, request, *args, **kwargs):
        try:
            obj = self.get_object(request, *args, **kwargs)
        except ObjectDoesNotExist:
            raise Http404('Feed object does not exist.')
        feedgen = self.get_feed(obj, request)
        response = HttpResponse(content_type=feedgen.content_type)
        if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
            # if item_pubdate or item_updateddate is defined for the feed, set
            # header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
            response['Last-Modified'] = http_date(
                timegm(feedgen.latest_post_date().utctimetuple()))
        feedgen.write(response, 'utf-8')
        return response

def __call__(self, request, *args, **kwargs):
        try:
            obj = self.get_object(request, *args, **kwargs)
        except ObjectDoesNotExist:
            raise Http404('Feed object does not exist.')
        feedgen = self.get_feed(obj, request)
        response = HttpResponse(content_type=feedgen.content_type)
        if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
            # if item_pubdate or item_updateddate is defined for the feed, set
            # header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
            response['Last-Modified'] = http_date(
                timegm(feedgen.latest_post_date().utctimetuple()))
        feedgen.write(response, 'utf-8')
        return response

def test_not_modified(self):
        server = DefaultServer()
        request = Mock()
        request.META = {'HTTP_IF_MODIFIED_SINCE': http_date(time.time())}
        response = server.serve(request, self.filer_file.file)
        self.assertTrue(isinstance(response, HttpResponseNotModified))

def _image(self, request, pk=None):
        source = self.get_object()
        last_modified = int(os.path.getmtime(source.filepath))
        response = get_conditional_response(request, last_modified=last_modified)
        if response is None:
            response = HttpResponse(open(source.filepath, 'rb'), content_type=mimetypes.guess_type(source.name)[0])
        response['Last-Modified'] = http_date(last_modified)
        return response

def __call__(self, request, *args, **kwargs):
        try:
            obj = self.get_object(request, *args, **kwargs)
        except ObjectDoesNotExist:
            raise Http404('Feed object does not exist.')
        feedgen = self.get_feed(obj, request)
        response = HttpResponse(content_type=feedgen.content_type)
        if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
            # if item_pubdate or item_updateddate is defined for the feed, set
            # header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
            response['Last-Modified'] = http_date(
                timegm(feedgen.latest_post_date().utctimetuple()))
        feedgen.write(response, 'utf-8')
        return response

def sitemap(request, sitemaps, section=None,
            template_name='sitemap.xml', content_type='application/xml'):

    req_protocol = request.scheme
    req_site = get_current_site(request)

    if section is not None:
        if section not in sitemaps:
            raise Http404("No sitemap available for section: %r" % section)
        maps = [sitemaps[section]]
    else:
        maps = sitemaps.values()
    page = request.GET.get("p", 1)

    urls = []
    for site in maps:
        try:
            if callable(site):
                site = site()
            urls.extend(site.get_urls(page=page, site=req_site,
                                      protocol=req_protocol))
        except EmptyPage:
            raise Http404("Page %s empty" % page)
        except PageNotAnInteger:
            raise Http404("No page '%s'" % page)
    response = TemplateResponse(request, template_name, {'urlset': urls},
                                content_type=content_type)
    if hasattr(site, 'latest_lastmod'):
        # if latest_lastmod is defined for site, set header so as
        # ConditionalGetMiddleware is able to send 304 NOT MODIFIED
        lastmod = site.latest_lastmod
        response['Last-Modified'] = http_date(
            timegm(
                lastmod.utctimetuple() if isinstance(lastmod, datetime.datetime)
                else lastmod.timetuple()
            )
        )
    return response

def __call__(self, request, *args, **kwargs):
        try:
            obj = self.get_object(request, *args, **kwargs)
        except ObjectDoesNotExist:
            raise Http404('Feed object does not exist.')
        feedgen = self.get_feed(obj, request)
        response = HttpResponse(content_type=feedgen.content_type)
        if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
            # if item_pubdate or item_updateddate is defined for the feed, set
            # header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
            response['Last-Modified'] = http_date(
                timegm(feedgen.latest_post_date().utctimetuple()))
        feedgen.write(response, 'utf-8')
        return response

def send_file(request, filepath, last_modified=None, filename=None):
    fullpath = filepath
    # Respect the If-Modified-Since header.
    statobj = os.stat(fullpath)
    if filename:
        mimetype, encoding = mimetypes.guess_type(filename)
    else:
        mimetype, encoding = mimetypes.guess_type(fullpath)

    mimetype = mimetype or 'application/octet-stream'

    if settings.USE_SENDFILE:
        response = django_sendfile_response(request, filepath)
    else:
        response = HttpResponse(open(fullpath, 'rb').read(), content_type=mimetype)

    if not last_modified:
        response["Last-Modified"] = http_date(statobj.st_mtime)
    else:
        if isinstance(last_modified, datetime):
            last_modified = float(dateformat.format(last_modified, 'U'))
        response["Last-Modified"] = http_date(epoch_seconds=last_modified)

    response["Content-Length"] = statobj.st_size

    if encoding:
        response["Content-Encoding"] = encoding

    if filename:
        filename_escaped = filepath_to_uri(filename)
        response["Content-Disposition"] = "attachment; filename=%s" % filename_escaped

    return response

def __call__(self, request, *args, **kwargs):
        try:
            obj = self.get_object(request, *args, **kwargs)
        except ObjectDoesNotExist:
            raise Http404('Feed object does not exist.')
        feedgen = self.get_feed(obj, request)
        response = HttpResponse(content_type=feedgen.content_type)
        if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
            # if item_pubdate or item_updateddate is defined for the feed, set
            # header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
            response['Last-Modified'] = http_date(
                timegm(feedgen.latest_post_date().utctimetuple()))
        feedgen.write(response, 'utf-8')
        return response

def sitemap(request, sitemaps, section=None,
            template_name='sitemap.xml', content_type='application/xml'):

    req_protocol = request.scheme
    req_site = get_current_site(request)

    if section is not None:
        if section not in sitemaps:
            raise Http404("No sitemap available for section: %r" % section)
        maps = [sitemaps[section]]
    else:
        maps = sitemaps.values()
    page = request.GET.get("p", 1)

    urls = []
    for site in maps:
        try:
            if callable(site):
                site = site()
            urls.extend(site.get_urls(page=page, site=req_site,
                                      protocol=req_protocol))
        except EmptyPage:
            raise Http404("Page %s empty" % page)
        except PageNotAnInteger:
            raise Http404("No page '%s'" % page)
    response = TemplateResponse(request, template_name, {'urlset': urls},
                                content_type=content_type)
    if hasattr(site, 'latest_lastmod'):
        # if latest_lastmod is defined for site, set header so as
        # ConditionalGetMiddleware is able to send 304 NOT MODIFIED
        lastmod = site.latest_lastmod
        response['Last-Modified'] = http_date(
            timegm(
                lastmod.utctimetuple() if isinstance(lastmod, datetime.datetime)
                else lastmod.timetuple()
            )
        )
    return response

def __call__(self, request, *args, **kwargs):
        try:
            obj = self.get_object(request, *args, **kwargs)
        except ObjectDoesNotExist:
            raise Http404('Feed object does not exist.')
        feedgen = self.get_feed(obj, request)
        response = HttpResponse(content_type=feedgen.content_type)
        if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
            # if item_pubdate or item_updateddate is defined for the feed, set
            # header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
            response['Last-Modified'] = http_date(
                timegm(feedgen.latest_post_date().utctimetuple()))
        feedgen.write(response, 'utf-8')
        return response

def sitemap(request, sitemaps, section=None,
            template_name='sitemap.xml', content_type='application/xml'):

    req_protocol = request.scheme
    req_site = get_current_site(request)

    if section is not None:
        if section not in sitemaps:
            raise Http404("No sitemap available for section: %r" % section)
        maps = [sitemaps[section]]
    else:
        maps = sitemaps.values()
    page = request.GET.get("p", 1)

    urls = []
    for site in maps:
        try:
            if callable(site):
                site = site()
            urls.extend(site.get_urls(page=page, site=req_site,
                                      protocol=req_protocol))
        except EmptyPage:
            raise Http404("Page %s empty" % page)
        except PageNotAnInteger:
            raise Http404("No page '%s'" % page)
    response = TemplateResponse(request, template_name, {'urlset': urls},
                                content_type=content_type)
    if hasattr(site, 'latest_lastmod'):
        # if latest_lastmod is defined for site, set header so as
        # ConditionalGetMiddleware is able to send 304 NOT MODIFIED
        lastmod = site.latest_lastmod
        response['Last-Modified'] = http_date(
            timegm(
                lastmod.utctimetuple() if isinstance(lastmod, datetime.datetime)
                else lastmod.timetuple()
            )
        )
    return response

def read(self):
        response = HttpResponse()
        full_path = self.get_abs_path().encode('utf-8')
        if self.quote:
            full_path = urllib.parse.quote(full_path)
        response['X-SendFile'] = full_path
        response['Content-Type'] = mimetypes.guess_type(self.displayname)
        response['Content-Length'] = self.getcontentlength
        response['Last-Modified'] = http_date(self.getlastmodified)
        response['ETag'] = self.getetag
        raise ResponseException(response)

def read(self):
        response = HttpResponse()
        response['X-Accel-Redirect'] = url_join(self.prefix, self.get_path().encode('utf-8'))
        response['X-Accel-Charset'] = 'utf-8'
        response['Content-Type'] = mimetypes.guess_type(self.displayname)
        response['Content-Length'] = self.getcontentlength
        response['Last-Modified'] = http_date(self.getlastmodified)
        response['ETag'] = self.getetag
        raise ResponseException(response)

def __call__(self, request, *args, **kwargs):
        try:
            obj = self.get_object(request, *args, **kwargs)
        except ObjectDoesNotExist:
            raise Http404('Feed object does not exist.')
        feedgen = self.get_feed(obj, request)
        response = HttpResponse(content_type=feedgen.content_type)
        if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
            # if item_pubdate or item_updateddate is defined for the feed, set
            # header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
            response['Last-Modified'] = http_date(
                timegm(feedgen.latest_post_date().utctimetuple()))
        feedgen.write(response, 'utf-8')
        return response