1 files changed, 143 insertions, 0 deletions
diff --git a/parts/django/django/views/static.py b/parts/django/django/views/static.py
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+++ b/parts/django/django/views/static.py
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+"""
+Views and functions for serving static files. These are only to be used
+during development, and SHOULD NOT be used in a production setting.
+"""
+
+import mimetypes
+import os
+import posixpath
+import re
+import stat
+import urllib
+from email.Utils import parsedate_tz, mktime_tz
+
+from django.template import loader
+from django.http import Http404, HttpResponse, HttpResponseRedirect, HttpResponseNotModified
+from django.template import Template, Context, TemplateDoesNotExist
+from django.utils.http import http_date
+
+def serve(request, path, document_root=None, show_indexes=False):
+    """
+    Serve static files below a given point in the directory structure.
+
+    To use, put a URL pattern such as::
+
+        (r'^(?P<path>.*)$', 'django.views.static.serve', {'document_root' : '/path/to/my/files/'})
+
+    in your URLconf. You must provide the ``document_root`` param. You may
+    also set ``show_indexes`` to ``True`` if you'd like to serve a basic index
+    of the directory.  This index view will use the template hardcoded below,
+    but if you'd like to override it, you can create a template called
+    ``static/directory_index.html``.
+    """
+
+    # Clean up given path to only allow serving files below document_root.
+    path = posixpath.normpath(urllib.unquote(path))
+    path = path.lstrip('/')
+    newpath = ''
+    for part in path.split('/'):
+        if not part:
+            # Strip empty path components.
+            continue
+        drive, part = os.path.splitdrive(part)
+        head, part = os.path.split(part)
+        if part in (os.curdir, os.pardir):
+            # Strip '.' and '..' in path.
+            continue
+        newpath = os.path.join(newpath, part).replace('\\', '/')
+    if newpath and path != newpath:
+        return HttpResponseRedirect(newpath)
+    fullpath = os.path.join(document_root, newpath)
+    if os.path.isdir(fullpath):
+        if show_indexes:
+            return directory_index(newpath, fullpath)
+        raise Http404("Directory indexes are not allowed here.")
+    if not os.path.exists(fullpath):
+        raise Http404('"%s" does not exist' % fullpath)
+    # Respect the If-Modified-Since header.
+    statobj = os.stat(fullpath)
+    mimetype, encoding = mimetypes.guess_type(fullpath)
+    mimetype = mimetype or 'application/octet-stream'
+    if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'),
+                              statobj[stat.ST_MTIME], statobj[stat.ST_SIZE]):
+        return HttpResponseNotModified(mimetype=mimetype)
+    contents = open(fullpath, 'rb').read()
+    response = HttpResponse(contents, mimetype=mimetype)
+    response["Last-Modified"] = http_date(statobj[stat.ST_MTIME])
+    response["Content-Length"] = len(contents)
+    if encoding:
+        response["Content-Encoding"] = encoding
+    return response
+
+DEFAULT_DIRECTORY_INDEX_TEMPLATE = """
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+  <head>
+    <meta http-equiv="Content-type" content="text/html; charset=utf-8" />
+    <meta http-equiv="Content-Language" content="en-us" />
+    <meta name="robots" content="NONE,NOARCHIVE" />
+    <title>Index of {{ directory }}</title>
+  </head>
+  <body>
+    <h1>Index of {{ directory }}</h1>
+    <ul>
+      {% ifnotequal directory "/" %}
+      <li><a href="../">../</a></li>
+      {% endifnotequal %}
+      {% for f in file_list %}
+      <li><a href="{{ f|urlencode }}">{{ f }}</a></li>
+      {% endfor %}
+    </ul>
+  </body>
+</html>
+"""
+
+def directory_index(path, fullpath):
+    try:
+        t = loader.select_template(['static/directory_index.html',
+                'static/directory_index'])
+    except TemplateDoesNotExist:
+        t = Template(DEFAULT_DIRECTORY_INDEX_TEMPLATE, name='Default directory index template')
+    files = []
+    for f in os.listdir(fullpath):
+        if not f.startswith('.'):
+            if os.path.isdir(os.path.join(fullpath, f)):
+                f += '/'
+            files.append(f)
+    c = Context({
+        'directory' : path + '/',
+        'file_list' : files,
+    })
+    return HttpResponse(t.render(c))
+
+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