Re: [Mailman-Developers] Possible bug in 1.0b8
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[Harald Meland]
Please bear in mind that this is the first time I'm trying to do any CGI-related programming at all, but I still _think_ this patch is good (from reading the CGI/1.1 spec, and testing quickly that it doesn't break my web interface).
I was slightly wrong about the patch being perfectly good -- the Utils.CGIpath() function would, if both of the "proper" methods for getting at the path failed, fall back to ("/mailman/admin/" + list_name), regardless of which CGI script called it. This would, obviously, be wrong if called from e.g. "admindb". It could also be argued that referencing the (hopefully defined) global variable list_name from CGIpath() is unnecessarily risky. Below is a patch (against current CVS) which fixes these problems by operating in a manner very similar to os.environ.get(), i.e. letting the caller supply the complete fallback value. [ I'm not really sure that putting a pretty special-purpose function like CGIpath() into the generic Utils module is the Right Thing -- but I couldn't see anywhere else where it would fit better. ] Index: Mailman/Utils.py =================================================================== RCS file: /projects/cvsroot/mailman/Mailman/Utils.py,v retrieving revision 1.62 diff -u -r1.62 Utils.py --- Utils.py 1999/01/14 04:07:28 1.62 +++ Utils.py 1999/02/24 20:26:00 @@ -664,3 +664,22 @@ reraise(IOError, e) finally: os.umask(ou) + +def CGIpath(env, fallback=None): + """Return the full virtual path this CGI script was invoked with. + + Newer web servers seems to supply this info in the REQUEST_URI + environment variable -- which isn't part of the CGI/1.1 spec. + Thus, if REQUEST_URI isn't available, we concatenate SCRIPT_NAME + and PATH_INFO, both of which are part of CGI/1.1. + + Optional second argument `fallback' (default `None') is returned if + both of the above methods fail. + + """ + if env.has_key("REQUEST_URI"): + return env["REQUEST_URI"] + elif env.has_key("SCRIPT_NAME") and env.has_key("PATH_INFO"): + return (env["SCRIPT_NAME"] + env["PATH_INFO"]) + else: + return fallback Index: Mailman/Cgi/admin.py =================================================================== RCS file: /projects/cvsroot/mailman/Mailman/Cgi/admin.py,v retrieving revision 1.31 diff -u -r1.31 admin.py --- admin.py 1999/01/09 05:57:17 1.31 +++ admin.py 1999/02/24 20:26:01 @@ -123,8 +123,8 @@ text = Utils.maketext( 'admlogin.txt', {"listname": list_name, - "path" : os.environ.get("REQUEST_URI", - '/mailman/admin/' + list_name), + "path" : Utils.CGIpath(os.environ, + '/mailman/admin/' + list_name), "message" : message, }) print text Index: Mailman/Cgi/admindb.py =================================================================== RCS file: /projects/cvsroot/mailman/Mailman/Cgi/admindb.py,v retrieving revision 1.9 diff -u -r1.9 admindb.py --- admindb.py 1999/01/09 06:22:44 1.9 +++ admindb.py 1999/02/24 20:26:01 @@ -112,8 +112,8 @@ text = Utils.maketext( 'admlogin.txt', {'listname': list_name, - 'path' : os.environ.get('REQUEST_URI', - '/mailman/admindb/' + list_name), + 'path' : Utils.CGIpath(os.environ, + '/mailman/admindb/' + list_name), 'message' : message, }) print text -- Harald
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Harald Meland