Sendfile: add a sendfile module based on django-sendfile2

django_etebase/sendfile/backends/development.py

@@ -0,0 +1,17 @@
+import os.path
+
+from django.views.static import serve
+
+
+def sendfile(request, filename, **kwargs):
+    """
+    Send file using Django dev static file server.
+
+    .. warning::
+
+        Do not use in production. This is only to be used when developing and
+        is provided for convenience only
+    """
+    dirname = os.path.dirname(filename)
+    basename = os.path.basename(filename)
+    return serve(request, basename, dirname)

django_etebase/sendfile/backends/mod_wsgi.py

@@ -0,0 +1,17 @@
+from __future__ import absolute_import
+
+from django.http import HttpResponse
+
+from ..utils import _convert_file_to_url
+
+
+def sendfile(request, filename, **kwargs):
+    response = HttpResponse()
+    response['Location'] = _convert_file_to_url(filename)
+    # need to destroy get_host() to stop django
+    # rewriting our location to include http, so that
+    # mod_wsgi is able to do the internal redirect
+    request.get_host = lambda: ''
+    request.build_absolute_uri = lambda location: location
+
+    return response

django_etebase/sendfile/backends/nginx.py

@@ -0,0 +1,12 @@
+from __future__ import absolute_import
+
+from django.http import HttpResponse
+
+from ..utils import _convert_file_to_url
+
+
+def sendfile(request, filename, **kwargs):
+    response = HttpResponse()
+    response['X-Accel-Redirect'] = _convert_file_to_url(filename)
+
+    return response

django_etebase/sendfile/backends/simple.py

@@ -0,0 +1,60 @@
+from email.utils import mktime_tz, parsedate_tz
+import re
+
+from django.core.files.base import File
+from django.http import HttpResponse, HttpResponseNotModified
+from django.utils.http import http_date
+
+
+def sendfile(request, filepath, **kwargs):
+    '''Use the SENDFILE_ROOT value composed with the path arrived as argument
+    to build an absolute path with which resolve and return the file contents.
+
+    If the path points to a file out of the root directory (should cover both
+    situations with '..' and symlinks) then a 404 is raised.
+    '''
+    statobj = filepath.stat()
+
+    # Respect the If-Modified-Since header.
+    if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'),
+                              statobj.st_mtime, statobj.st_size):
+        return HttpResponseNotModified()
+
+    with File(filepath.open('rb')) as f:
+        response = HttpResponse(f.chunks())
+
+    response["Last-Modified"] = http_date(statobj.st_mtime)
+    return response
+
+
+def was_modified_since(header=None, mtime=0, size=0):
+    """
+    Was something modified since the user last downloaded it?
+
+    header
+      This is the value of the If-Modified-Since header.  If this is None,
+      I'll just return True.
+
+    mtime
+      This is the modification time of the item we're talking about.
+
+    size
+      This is the size of the item we're talking about.
+    """
+    try:
+        if header is None:
+            raise ValueError
+        matches = re.match(r"^([^;]+)(; length=([0-9]+))?$", header,
+                           re.IGNORECASE)
+        header_date = parsedate_tz(matches.group(1))
+        if header_date is None:
+            raise ValueError
+        header_mtime = mktime_tz(header_date)
+        header_len = matches.group(3)
+        if header_len and int(header_len) != size:
+            raise ValueError
+        if mtime > header_mtime:
+            raise ValueError
+    except (AttributeError, ValueError, OverflowError):
+        return True
+    return False

django_etebase/sendfile/backends/xsendfile.py

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+from django.http import HttpResponse
+
+
+def sendfile(request, filename, **kwargs):
+    filename = str(filename)
+    response = HttpResponse()
+    response['X-Sendfile'] = filename
+
+    return response