|
0
|
1 |
""" |
|
|
2 |
Views and functions for serving static files. These are only to be used |
|
|
3 |
during development, and SHOULD NOT be used in a production setting. |
|
|
4 |
""" |
|
|
5 |
|
|
|
6 |
import mimetypes |
|
|
7 |
import os |
|
|
8 |
import posixpath |
|
|
9 |
import re |
|
|
10 |
import stat |
|
|
11 |
import urllib |
|
|
12 |
from email.Utils import parsedate_tz, mktime_tz |
|
|
13 |
|
|
|
14 |
from django.template import loader |
|
|
15 |
from django.http import Http404, HttpResponse, HttpResponseRedirect, HttpResponseNotModified |
|
|
16 |
from django.template import Template, Context, TemplateDoesNotExist |
|
|
17 |
from django.utils.http import http_date |
|
|
18 |
|
|
|
19 |
def serve(request, path, document_root=None, show_indexes=False): |
|
|
20 |
""" |
|
|
21 |
Serve static files below a given point in the directory structure. |
|
|
22 |
|
|
|
23 |
To use, put a URL pattern such as:: |
|
|
24 |
|
|
|
25 |
(r'^(?P<path>.*)$', 'django.views.static.serve', {'document_root' : '/path/to/my/files/'}) |
|
|
26 |
|
|
|
27 |
in your URLconf. You must provide the ``document_root`` param. You may |
|
|
28 |
also set ``show_indexes`` to ``True`` if you'd like to serve a basic index |
|
|
29 |
of the directory. This index view will use the template hardcoded below, |
|
|
30 |
but if you'd like to override it, you can create a template called |
|
|
31 |
``static/directory_index.html``. |
|
|
32 |
""" |
|
|
33 |
|
|
|
34 |
# Clean up given path to only allow serving files below document_root. |
|
|
35 |
path = posixpath.normpath(urllib.unquote(path)) |
|
|
36 |
path = path.lstrip('/') |
|
|
37 |
newpath = '' |
|
|
38 |
for part in path.split('/'): |
|
|
39 |
if not part: |
|
|
40 |
# Strip empty path components. |
|
|
41 |
continue |
|
|
42 |
drive, part = os.path.splitdrive(part) |
|
|
43 |
head, part = os.path.split(part) |
|
|
44 |
if part in (os.curdir, os.pardir): |
|
|
45 |
# Strip '.' and '..' in path. |
|
|
46 |
continue |
|
|
47 |
newpath = os.path.join(newpath, part).replace('\\', '/') |
|
|
48 |
if newpath and path != newpath: |
|
|
49 |
return HttpResponseRedirect(newpath) |
|
|
50 |
fullpath = os.path.join(document_root, newpath) |
|
|
51 |
if os.path.isdir(fullpath): |
|
|
52 |
if show_indexes: |
|
|
53 |
return directory_index(newpath, fullpath) |
|
29
|
54 |
raise Http404("Directory indexes are not allowed here.") |
|
0
|
55 |
if not os.path.exists(fullpath): |
|
29
|
56 |
raise Http404('"%s" does not exist' % fullpath) |
|
0
|
57 |
# Respect the If-Modified-Since header. |
|
|
58 |
statobj = os.stat(fullpath) |
|
29
|
59 |
mimetype = mimetypes.guess_type(fullpath)[0] or 'application/octet-stream' |
|
0
|
60 |
if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'), |
|
|
61 |
statobj[stat.ST_MTIME], statobj[stat.ST_SIZE]): |
|
29
|
62 |
return HttpResponseNotModified(mimetype=mimetype) |
|
0
|
63 |
contents = open(fullpath, 'rb').read() |
|
|
64 |
response = HttpResponse(contents, mimetype=mimetype) |
|
|
65 |
response["Last-Modified"] = http_date(statobj[stat.ST_MTIME]) |
|
|
66 |
response["Content-Length"] = len(contents) |
|
|
67 |
return response |
|
|
68 |
|
|
|
69 |
DEFAULT_DIRECTORY_INDEX_TEMPLATE = """ |
|
|
70 |
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
|
|
71 |
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> |
|
|
72 |
<head> |
|
|
73 |
<meta http-equiv="Content-type" content="text/html; charset=utf-8" /> |
|
|
74 |
<meta http-equiv="Content-Language" content="en-us" /> |
|
|
75 |
<meta name="robots" content="NONE,NOARCHIVE" /> |
|
|
76 |
<title>Index of {{ directory }}</title> |
|
|
77 |
</head> |
|
|
78 |
<body> |
|
|
79 |
<h1>Index of {{ directory }}</h1> |
|
|
80 |
<ul> |
|
|
81 |
{% ifnotequal directory "/" %} |
|
|
82 |
<li><a href="../">../</a></li> |
|
|
83 |
{% endifnotequal %} |
|
|
84 |
{% for f in file_list %} |
|
|
85 |
<li><a href="{{ f|urlencode }}">{{ f }}</a></li> |
|
|
86 |
{% endfor %} |
|
|
87 |
</ul> |
|
|
88 |
</body> |
|
|
89 |
</html> |
|
|
90 |
""" |
|
|
91 |
|
|
|
92 |
def directory_index(path, fullpath): |
|
|
93 |
try: |
|
|
94 |
t = loader.select_template(['static/directory_index.html', |
|
|
95 |
'static/directory_index']) |
|
|
96 |
except TemplateDoesNotExist: |
|
|
97 |
t = Template(DEFAULT_DIRECTORY_INDEX_TEMPLATE, name='Default directory index template') |
|
|
98 |
files = [] |
|
|
99 |
for f in os.listdir(fullpath): |
|
|
100 |
if not f.startswith('.'): |
|
|
101 |
if os.path.isdir(os.path.join(fullpath, f)): |
|
|
102 |
f += '/' |
|
|
103 |
files.append(f) |
|
|
104 |
c = Context({ |
|
|
105 |
'directory' : path + '/', |
|
|
106 |
'file_list' : files, |
|
|
107 |
}) |
|
|
108 |
return HttpResponse(t.render(c)) |
|
|
109 |
|
|
|
110 |
def was_modified_since(header=None, mtime=0, size=0): |
|
|
111 |
""" |
|
|
112 |
Was something modified since the user last downloaded it? |
|
|
113 |
|
|
|
114 |
header |
|
|
115 |
This is the value of the If-Modified-Since header. If this is None, |
|
|
116 |
I'll just return True. |
|
|
117 |
|
|
|
118 |
mtime |
|
|
119 |
This is the modification time of the item we're talking about. |
|
|
120 |
|
|
|
121 |
size |
|
|
122 |
This is the size of the item we're talking about. |
|
|
123 |
""" |
|
|
124 |
try: |
|
|
125 |
if header is None: |
|
|
126 |
raise ValueError |
|
|
127 |
matches = re.match(r"^([^;]+)(; length=([0-9]+))?$", header, |
|
|
128 |
re.IGNORECASE) |
|
|
129 |
header_mtime = mktime_tz(parsedate_tz(matches.group(1))) |
|
|
130 |
header_len = matches.group(3) |
|
|
131 |
if header_len and int(header_len) != size: |
|
|
132 |
raise ValueError |
|
|
133 |
if mtime > header_mtime: |
|
|
134 |
raise ValueError |
|
|
135 |
except (AttributeError, ValueError): |
|
|
136 |
return True |
|
|
137 |
return False |