I dug into it again, and the issue is much simpler than I previously though.

- LDAP has an email address with capital letters
- NC store this address in lower case
- When the user logs in, we compare the [stored email with the new lower case email](https://github.com/nextcloud/server/blob/master/lib/private/AllConfig.php#L259-L261) before storing it. Here, both email will be the same, so we won't store the new email address with upper case letters. Which is what we want.
- We then [compare emails as they are before triggering an event](https://github.com/nextcloud/server/blob/master/lib/private/User/User.php#L202-L204), they won't match, so the user will receive an email signaling an email change every time he logs in.

The fix is to compare the old email with the new lower case email before sending the event.

Signed-off-by: Louis Chemineau <louis@chmn.me>

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Merge pull request #33760 from nextcloud/release/23.0.9_rc1

23.0.9 RC1

Merge pull request #32985 from nextcloud/backport/32242/stable23

[stable23] Fix logging data context to file

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Merge pull request #33763 from nextcloud/backport/33603/stable23

[stable23] optimize search post-processing for jail wrapper

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Merge pull request #33645 from nextcloud/backport/32216/stable23

[stable23] Respect user settings in php.ini if they are big enough

Merge pull request #32751 from nextcloud/backport/32744/stable23

[stable23] Always log errors from sending federation api requests to ease debugging

Fix logging data context to file

It was only logged when an exception was provided or when using
logData (which is not being much used).

We make sure the interpolated parameters are not logged.

Only tested with file write logger, but shouldn't work differently.

Crash reporters always had the context.

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

fix the backport

Signed-off-by: szaimen <szaimen@e.mail.de>

optimize search post-processing for jail wrapper

don't both asking the wrapped cache if we know it's not in our jail anyway

Signed-off-by: Robin Appelman <robin@icewind.nl>

Merge pull request #33515 from nextcloud/backport/33513/stable23

[stable23] Recover installation when creating the database user fails and improve password strength

23.0.9 RC1

Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>

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Merge pull request #33701 from nextcloud/backport/33689/stable23

[stable23] logger ignore args of sharepoint-related methods

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logger ignore args of sharepoint-related methods

Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>

Merge pull request #33677 from nextcloud/backport/33624/stable23

 [stable23] Update CRL

Merge pull request #33683 from nextcloud/backport/33667/stable23

[stable23] Fix plural usage in LDAP wizard

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Remove unused method

Signed-off-by: Joas Schilling <coding@schilljs.com>

Fix plural usage in LDAP wizard

Signed-off-by: Joas Schilling <coding@schilljs.com>

Update CRL

Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>

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Merge pull request #33661 from nextcloud/backport/33651/stable23

[stable23] [stable24] Fix carddav activities

Fix carddav activities

The settings where combined last minute but at the same time the activities
where not adjusted to map an existing setting so the filter was not possible
to even limit it to the types that the activities had.

Signed-off-by: Joas Schilling <coding@schilljs.com>

Merge pull request #33606 from nextcloud/enh/noid/mariadb10.6-stable23

[stable23] Add testing for mariadb10.6

Merge pull request #33649 from nextcloud/backport/33643/stable23

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Improve handling of profile page

Signed-off-by: Christopher Ng <chrng8@gmail.com>

Fix suggestions by @artonage

Signed-off-by: Micke Nordin <kano@sunet.se>

Simpler version as proposed by @artonage

Co-authored-by: Louis <6653109+artonge@users.noreply.github.com>
Signed-off-by: Micke Nordin <kano@sunet.se>

Respect user settings in php.ini if they are big enough

In the admin guide:
* https://docs.nextcloud.com/server/latest/admin_manual/configuration_files/big_file_upload_configuration.html

it is mentioned that you can tweek:
* max_input_time
* max_execution_time

in order to enable larger file uploads. However, the current codebase
will hard code these values to one hour, no matter what the user sets in
php.ini.

This patch will allow the user to set these settings in php.ini and they
will be respected, if and only if, they are set to something bigger than
3600 seconds.

Signed-off-by: Micke Nordin <kano@sunet.se>

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[stable23] add mariadb 10.6

Signed-off-by: szaimen <szaimen@e.mail.de>

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Merge pull request #33474 from nextcloud/dependabot/npm_and_yarn/stable23/css-vars-ponyfill-2.4.8

Bump css-vars-ponyfill from 2.4.7 to 2.4.8

Bumps [css-vars-ponyfill](https://github.com/jhildenbiddle/css-vars-ponyfill) from 2.4.7 to 2.4.8.
- [Release notes](https://github.com/jhildenbiddle/css-vars-ponyfill/releases)
- [Changelog](https://github.com/jhildenbiddle/css-vars-ponyfill/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jhildenbiddle/css-vars-ponyfill/compare/v2.4.7...v2.4.8)

---
updated-dependencies:
- dependency-name: css-vars-ponyfill
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Merge pull request #33580 from nextcloud/backport/33538/stable23

[stable23] Unify initial and updated quota display

Show usage percenteage in the tooltip

The tooltip of the initial quota display showed the usage percenteage
and the total available space. However, the total available space was
redundant, as it was shown just below. The tooltip of the updated quota
display showed the usage percenteage, but based on the quota rather than
the total available space, so there was a mismatch between the tooltip
and the bar below. Now the tooltip of the initial and the updated quota
display both show just the usage percenteage based on the total
available space.

Signed-off-by: Daniel Calviño Sánchez <danxuliu@gmail.com>

Use total available space rather than quota when updating the display

The initial quota display uses the total available space rather than the
quota. Moreover, the relative usage is based on the total space rather
than the quota. Due to this now the total available space is also used
when updating the quota display.

Signed-off-by: Daniel Calviño Sánchez <danxuliu@gmail.com>

Merge pull request #33184 from nextcloud/dependabot/npm_and_yarn/stable23/moment-2.29.4

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Create more secure passwords by default

Signed-off-by: Joas Schilling <coding@schilljs.com>

Recover installation when creating the user failed

Signed-off-by: Joas Schilling <coding@schilljs.com>

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Merge pull request #33503 from nextcloud/release/23.0.8

23.0.8

Signed-off-by: John Molakvoæ <skjnldsv@protonmail.com>

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Bump moment from 2.29.3 to 2.29.4

Bumps [moment](https://github.com/moment/moment) from 2.29.3 to 2.29.4.
- [Release notes](https://github.com/moment/moment/releases)
- [Changelog](https://github.com/moment/moment/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/moment/moment/compare/2.29.3...2.29.4)

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updated-dependencies:
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  dependency-type: direct:production
  update-type: version-update:semver-patch
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Merge pull request #33489 from nextcloud/backport/33485/stable23

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Do not update passwords if nothing changed

Signed-off-by: Julius Härtl <jus@bitgrid.net>

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Merge pull request #33421 from nextcloud/release/23.0.8rc1

23.0.8rc1

Merge pull request #33443 from nextcloud/backport/33407/stable23

[stable23] Handle one time and large passwords

Merge pull request #33456 from nextcloud/backport/32852/stable23

[stable23] Revert "Revert "Remove inefficient fed share scanner""

fix external share scanner not propagating locking-opt-out

Signed-off-by: Robin Appelman <robin@icewind.nl>

Disable locking on federated shares

The old inneficiant code didn't do locking and adding locking is
creating issues

Signed-off-by: Carl Schwan <carl@carlschwan.eu>

Revert "Revert "Remove inefficient fed share scanner""

This reverts commit 6667007bf235b90a7dd105c881cf5802b2a3f83e.

Signed-off-by: Carl Schwan <carl@carlschwan.eu>

Merge pull request #33436 from nextcloud/dependabot/npm_and_yarn/stable23/nextcloud/moment-1.2.1

Bump @nextcloud/momemt to 1.2.1

Handle one time and large passwords

For passwords bigger than 250 characters, use a bigger key since the
performance impact is minor (around one second to encrypt the password).

For passwords bigger than 470 characters, give up earlier and throw
exeception recommanding admin to either enable the previously enabled
configuration or use smaller passwords.

This adds an option to disable storing passwords in the database. This
might be desirable when using single use token as passwords or very
large passwords.

Signed-off-by: Carl Schwan <carl@carlschwan.eu>

Bump @nextcloud/momemt to 1.2.1

Signed-off-by: Carl Schwan <carl@carlschwan.eu>

Merge pull request #33354 from nextcloud/backport/33031/stable23

[stable23] Improve local IP detection

Merge pull request #33392 from nextcloud/backport/33280/stable23

[stable23] handle AccessDenied error when checking if external s3 support versions

Merge pull request #32333 from nextcloud/dependabot/npm_and_yarn/stable23/clipboard-2.0.11

Bump clipboard from 2.0.10 to 2.0.11

Bumps [clipboard](https://github.com/zenorocha/clipboard.js) from 2.0.10 to 2.0.11.
- [Release notes](https://github.com/zenorocha/clipboard.js/releases)
- [Commits](https://github.com/zenorocha/clipboard.js/compare/v2.0.10...v2.0.11)

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updated-dependencies:
- dependency-name: clipboard
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Merge pull request #33408 from nextcloud/backport/33090/stable23

[stable23] DAV custom props: catch Exception and rollback transaction in case

Always log errors from sending federation api requests to ease debugging

Signed-off-by: Joas Schilling <coding@schilljs.com>

Merge pull request #33156 from nextcloud/backport/32997/stable23

[stable23] load dashboard widgets of enabled apps only

Merge pull request #33383 from nextcloud/backport/33378/stable23

[stable23] don't set `null` as a bundle path

Fix autoloader

Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>

fix PHP 7.3 compat

Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>

Remove call to undefined function, fix typing

Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>

Align copied file with our code style

Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>

Copy IpUtils from Symfony to avoid new dependency on backport

Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>

Merge pull request #33103 from nextcloud/enhancement/add-logging-lo-federation

[Stable23] Logging, updating status for general error in federation

Merge pull request #33095 from nextcloud/dependabot/composer/build/integration/stable23/sabre/dav-4.4.0

Update sabre/dav requirement from 4.3.1 to 4.4.0 in /build/integration

23.0.8rc1

Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>

catch any exception for transaction control

Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>

DAV custom props: catch Exception and rollback transaction in case

- before exceptions were not caught, a started transaction might not have
  been finished
- also resolve depractions and use IQueryBuilder

Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>

handle AccessDenied error when checking if external s3 support versions

Signed-off-by: Matthieu Gallien <matthieu.gallien@nextcloud.com>