Code

Ticket #2407: cgi.2.py

File cgi.2.py, 2.8 KB (added by Thomas Güttler, 7 years ago)

Changes to cgi.py: include SCRIPT_NAME in PATH_INFO and connect stdout to stderr (print to logfile)

Line 
1"""
2CGI wrapper for Django using the WSGI protocol
3
4Code copy/pasted from PEP-0333 and then tweaked to serve django.
5http://www.python.org/dev/peps/pep-0333/#the-server-gateway-side
6
7This Script is from: http://code.djangoproject.com/ticket/2407
8
9Copy this script do django/core/servers/cgi.py
10"""
11
12import os, sys 
13import django.core.handlers.wsgi
14
15def runcgi():
16    environ                      = dict(os.environ.items())
17
18    # Django needs a PATH_INFO which includes the SCRIPT_NAME
19    # See http://code.djangoproject.com/ticket/285
20    # You need to edit urls.py to include the path:
21    #
22    # Example:
23    # urlpatterns = patterns(
24    #    '',
25    #    (r'^cgi-bin/django/admin/', include('django.contrib.admin.urls')),
26    #    )
27   
28    environ['PATH_INFO']         = "%s%s" % (environ['SCRIPT_NAME'], environ.get('PATH_INFO', ""))
29   
30    environ['wsgi.input']        = sys.stdin
31    environ['wsgi.errors']       = sys.stderr
32    environ['wsgi.version']      = (1,0)
33    environ['wsgi.multithread']  = False
34    environ['wsgi.multiprocess'] = True
35    environ['wsgi.run_once']     = True
36
37    application = django.core.handlers.wsgi.WSGIHandler()
38   
39    if environ.get('HTTPS','off') in ('on','1'):
40        environ['wsgi.url_scheme'] = 'https'
41    else:
42        environ['wsgi.url_scheme'] = 'http'
43   
44    headers_set  = []
45    headers_sent = []
46
47    toclient=sys.stdout
48    sys.stdout=sys.stderr # print should go to stderr (logfile)
49   
50    def write(data):
51        if not headers_set:
52             raise AssertionError("write() before start_response()")
53       
54        elif not headers_sent:
55             # Before the first output, send the stored headers
56             status, response_headers = headers_sent[:] = headers_set
57             toclient.write('Status: %s\r\n' % status)
58             for header in response_headers:
59                 toclient.write('%s: %s\r\n' % header)
60             toclient.write('\r\n')
61        toclient.write(data)
62        toclient.flush()
63       
64    def start_response(status,response_headers,exc_info=None):
65        if exc_info:
66            try:
67                if headers_sent:
68                    # Re-raise original exception if headers sent
69                    raise exc_info[0], exc_info[1], exc_info[2]
70            finally:
71                exc_info = None     # avoid dangling circular ref
72        elif headers_set:
73            raise AssertionError("Headers already set!")
74       
75        headers_set[:] = [status,response_headers]
76        return write
77   
78    result = application(environ, start_response)
79    try:
80        for data in result:
81            if data:    # don't send headers until body appears
82                write(data)
83        if not headers_sent:
84            write('')   # send headers now if body was empty
85    finally:
86        if hasattr(result,'close'):
87            result.close()