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CGI, SCGI and Certificates (was Re: [ANN] Gemini browser for iOS)

Michael Lazar lazar.michael22 at gmail.com

Thu Jun 11 20:02:52 BST 2020

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On Thu, Jun 11, 2020 at 1:58 PM solderpunk <solderpunk at sdf.org> wrote:

On Tue, Jun 09, 2020 at 09:02:24PM -0400, Michael Lazar wrote:

I believe this is using SCRIPT_NAME incorrectly per RFC 3875. The SCRIPT_NAME

should be the part of the URI path that comes before the PATH_INFO [1]. So in

your example:

GEMINI_URL=gemini://lucy.roswell.area51/cgi-bin/beta/foobar?one=1&two=2

SCRIPT_NAME=/cgi-bin/beta

PATH_INFO=/foobar

Is this how cgi-bins are traditionally handled? If a URI paths's prefix

matches the configured cgi-bin path, the standard mapping from URI paths

to the filesystem is interrupted, and the first component of the URI path

*after* the cgi-bin prefix (here `beta`) is the only think looked for on

the disk, with everything else passed along to PATH_INFO? If there is,

for example, a /var/gemini/cgi-bin/beta/ directory on the disk, the

server does not check for an executable named `foobar` in it?

Yes, but it's not limited to only the first component after cgi-bin/. The wayjetforce is implemented (thanks to a PR by arxcode [0]) is that it will walkthrough the URI path on the filesystem until it reaches an executable file.Then, anything left over is attached to the PATH_INFO. These two are both valid:

gemini://mozz.us/cgi-bin/debug.cgi/extra/path/info-

/var/gemini/cgi-bin/debug.cgi

gemini://mozz.us/cgi-bin/directory/debug.cgi/extra/path/info-

/var/gemini/cgi-bin/directory/debug.cgi

[0] https://github.com/michael-lazar/jetforce/issues/16