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Message: #10037

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[EP-tech] Help with redirect loops in EPrints 3.3.16

CAUTION: This e-mail originated outside the University of Southampton.

Hello,

I have long been running an EPrints 3.3 installation. I recently... broke part
of its functionality, and am losing my little remaining hair to get it back
working. I have decided to humbly ask for your help.

The issues started a couple of months ago, when we decided to enable TLS-based
connections, due to browsers (and indexers) no longer trusting HTTP-only
sites. I set up Letsencrypt's Certbot, and was happy. Only that I had issues
with some routes — sometimes, I'd have dynamic URLs generated to
/cgi/users/home/, but most often only to /users/home (which made it quite
painful to upload new items... but was not 100% unworkable)

Anyway, a couple of days ago, I found and tried to follow what appears to be the
official instructions:

    https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwiki.eprints.org%2Fw%2FHow_to_use_EPrints_with_HTTPS&data=05%7C02%7Ceprints-tech%40ecs.soton.ac.uk%7C7bdfaf285e264f54602208dd61c42718%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638774217388323402%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C80000%7C%7C%7C&sdata=4qLEfhhVZ61YM72DSvu4lerHTHw92pySBHVzWjGG%2B8c%3D&reserved=0

This led me to a more painful reality, where redirect loops just won't let me
call anything under /cgi/users/home -- that is, most of EPrints' actions!

    $ HEAD -S https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fru.iiec.unam.mx%2Fcgi%2Fusers%2Fhome&data=05%7C02%7Ceprints-tech%40ecs.soton.ac.uk%7C7bdfaf285e264f54602208dd61c42718%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638774217388340387%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C80000%7C%7C%7C&sdata=E%2BR2PgC921QwrmWrNSeOpN4GV2Qbm9eCdbhEmiG%2BRFw%3D&reserved=0
    HEAD https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fru.iiec.unam.mx%2Fcgi%2Fusers%2Fhome&data=05%7C02%7Ceprints-tech%40ecs.soton.ac.uk%7C7bdfaf285e264f54602208dd61c42718%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638774217388352946%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C80000%7C%7C%7C&sdata=kjRuBf%2BkFHWdDlGhGZoZE8714CKlkW2NYBBw3uKyXkQ%3D&reserved=0
    302 Found
    HEAD https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fru.iiec.unam.mx%2Fcgi%2Fusers%2Fhome&data=05%7C02%7Ceprints-tech%40ecs.soton.ac.uk%7C7bdfaf285e264f54602208dd61c42718%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638774217388365194%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C80000%7C%7C%7C&sdata=FmheaV3M4lyFDk7B744yG6vBGdkgSNTcPK5xx2F8jP8%3D&reserved=0
    302 Found
    HEAD https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fru.iiec.unam.mx%2Fcgi%2Fusers%2Fhome&data=05%7C02%7Ceprints-tech%40ecs.soton.ac.uk%7C7bdfaf285e264f54602208dd61c42718%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638774217388377170%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C80000%7C%7C%7C&sdata=qenZvHQ%2FLtFXCgI%2F36gLqgwBe%2BfItVUIKJ6rNzucZSE%3D&reserved=0
    302 Found
    HEAD https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fru.iiec.unam.mx%2Fcgi%2Fusers%2Fhome&data=05%7C02%7Ceprints-tech%40ecs.soton.ac.uk%7C7bdfaf285e264f54602208dd61c42718%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638774217388389466%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C80000%7C%7C%7C&sdata=WKiuYa2bdqb3jzS0z3LnzBPZIHxuJ37yTxfk8Jd7Uuo%3D&reserved=0
    302 Found
    HEAD https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fru.iiec.unam.mx%2Fcgi%2Fusers%2Fhome&data=05%7C02%7Ceprints-tech%40ecs.soton.ac.uk%7C7bdfaf285e264f54602208dd61c42718%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638774217388401868%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C80000%7C%7C%7C&sdata=VtP7Pv7dknq4nBOcviBsElYcLJzfFGCuEejft0gU67o%3D&reserved=0
    302 Found
    HEAD https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fru.iiec.unam.mx%2Fcgi%2Fusers%2Fhome&data=05%7C02%7Ceprints-tech%40ecs.soton.ac.uk%7C7bdfaf285e264f54602208dd61c42718%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638774217388414055%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C80000%7C%7C%7C&sdata=vuafhzPWw8GEbj7SWQwVwTfHx62zzhOyodFthN7i1yU%3D&reserved=0
    302 Found
    HEAD https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fru.iiec.unam.mx%2Fcgi%2Fusers%2Fhome&data=05%7C02%7Ceprints-tech%40ecs.soton.ac.uk%7C7bdfaf285e264f54602208dd61c42718%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638774217388426025%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C80000%7C%7C%7C&sdata=x4Xyx9wK9d18Zuaqs3DmrZ0C%2Ffbv%2BDUdeyyGjrAJJNs%3D&reserved=0
    302 Found
    HEAD https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fru.iiec.unam.mx%2Fcgi%2Fusers%2Fhome&data=05%7C02%7Ceprints-tech%40ecs.soton.ac.uk%7C7bdfaf285e264f54602208dd61c42718%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638774217388437967%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C80000%7C%7C%7C&sdata=TlfrOvJd1FFdYnMPDD3RvW6i2Qf4tlB2abmj0Hvq4l4%3D&reserved=0
    302 Found
    Connection: close
    Date: Wed, 12 Mar 2025 23:54:11 GMT
    Location: https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fru.iiec.unam.mx%2Fcgi%2Fusers%2Fhome&data=05%7C02%7Ceprints-tech%40ecs.soton.ac.uk%7C7bdfaf285e264f54602208dd61c42718%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638774217388449929%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C80000%7C%7C%7C&sdata=urwGZEBqxSgr7asWCNRrYl7ITcXw%2FTt0u5e7UDuNf5M%3D&reserved=0
    (... headers describing my certificate ...)
    Client-Warning: Redirect loop detected (max_redirect = 7)

(FWIW, no issues in publicly displaying my repository's URL 😉)

All other requests work fine, including those aiming at others in the /cgi
namespace:

    $ HEAD -S https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fru.iiec.unam.mx%2Fcgi%2Fstats%2Freport&data=05%7C02%7Ceprints-tech%40ecs.soton.ac.uk%7C7bdfaf285e264f54602208dd61c42718%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638774217388461806%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C80000%7C%7C%7C&sdata=L5TQ5U0DjkbmxCW9yrNHpc7T7NY0hOZQyoHGjQUwdDY%3D&reserved=0
    HEAD https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fru.iiec.unam.mx%2Fcgi%2Fstats%2Freport&data=05%7C02%7Ceprints-tech%40ecs.soton.ac.uk%7C7bdfaf285e264f54602208dd61c42718%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638774217388475434%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C80000%7C%7C%7C&sdata=hcJA7egL1%2FLCbjgfiEcu5eKmyO3WTnKLUk07V28ZrGo%3D&reserved=0
    302 Found
    HEAD https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fru.iiec.unam.mx%2Fcgi%2Fstats%2Freport&data=05%7C02%7Ceprints-tech%40ecs.soton.ac.uk%7C7bdfaf285e264f54602208dd61c42718%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638774217388487337%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C80000%7C%7C%7C&sdata=HE%2FJyqSANwjGBNsYJTf1jJlHaSmQUDk2xDxkt6q5%2FE4%3D&reserved=0
    200 OK

I don't want to spam the list with all of my existing bits of
configuration. Please tell me if there is anything worth sharing. The contents
of my cfg/cfg.d/10_core.pl file are:

    # This file was created by bin/epadmin
    # You can regenerate this file by doing ./bin/epadmin config_core iiec
    $c->{host} = 'ru.iiec.unam.mx';
    $c->{port} = '80';
    $c->{aliases} = [
    ];
    $c->{http_url} = 'https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fru.iiec.unam.mx%2F&data=05%7C02%7Ceprints-tech%40ecs.soton.ac.uk%7C7bdfaf285e264f54602208dd61c42718%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638774217388499463%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C80000%7C%7C%7C&sdata=4NY%2B2AxFnDTQgA0Kkv7CD1JoM2UPnUgjzMFBrhv6DdA%3D&reserved=0';
    $c->{http_cgiurl} = 'https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fru.iiec.unam.mx%2Fcgi&data=05%7C02%7Ceprints-tech%40ecs.soton.ac.uk%7C7bdfaf285e264f54602208dd61c42718%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C638774217388511351%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C80000%7C%7C%7C&sdata=iuDaW0chvSJqWGt4XgB8Gb%2FpEdkKteV%2FJtUb%2BnpjB9Q%3D&reserved=0';
    $c->{base_url} = "https://$c->{host}";
    $c->{securehost} = $c->{host};
    $c->{secureport} = 443;
    $c->{http_root} = undef;

Thank you for any advice you can give me!