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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 50581] Apache sets HTTPS variable to '1' instead of 'on'
Date Sat, 15 Jan 2011 04:34:03 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=50581

--- Comment #7 from Graham Dumpleton <Graham.Dumpleton@gmail.com> 2011-01-14 23:34:00
EST ---
OP is wrong on a few accounts.

First off, under WSGI scripts the correct way of identifying whether HTTPS was
used is to check the wsgi.url_scheme variable. The value of HTTPS cannot be
relied upon and could be missing depending on the WSGI hosting environment
being used even though HTTPS may be used.

Their probe output even showed the correct value to check:

 'wsgi.url_scheme': 'https'

Second thing wrong is that the environ they printed out was a WSGI per request
environment and not process wide environment variables from os.environ. That
WSGI per request environment isn't the same as what you would see for a CGI
script where process environment variables are used and so you cant use CGI as
the basis for what is in it.

FWIW, the WSGI specification even gives an example for a CGI/WSGI bridge which
is tolerant of HTTPS being 'On' or '1' as historically there seems to have been
hosting systems where 'On' may not have been used:

    if environ.get('HTTPS', 'off') in ('on', '1'):
        environ['wsgi.url_scheme'] = 'https'
    else:
        environ['wsgi.url_scheme'] = 'http'

A value of '1' for HTTPS was also potentially used in non WSGI hosting systems
for Python in the past as some Python web frameworks were hardwired to look for
HTTPS being '1' rather than 'On' and also weren't updated to use
wsgi.url_scheme instead. It is to accommodate those Python web frameworks that
'1' in particular was used rather than 'On' for what was a variable being
passed in WSGI environment and nothing to do with CGI or Apache.

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