Clean up stale realip references after client_ip_header rename

Update docblocks in Ip.php and common.php, fix old tests to use
the new config key, remove outdated translations, fix method casing
in

Clean up stale realip references after client_ip_header rename

Update docblocks in Ip.php and common.php, fix old tests to use
the new config key, remove outdated translations, fix method casing
in test, and add example to English config description.

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remove realip option, add default in conf/dokuwiki.php

ignore HTML validation issue with skipped headline levels

It's debatable if this is an error. I'd say it's more like a warning.

fix http tests

The response at httpbingo has changed, tests needed updates

updated tests for PHP 8.2

* now using DomWrapper 3.0 which removes a bunch of deprecation messages
* fixed class name throwing a warning
* fixed deprecated reflection use

TreeBuilder: skip invalid pages and namespaces

This will hide namespace templates or weird folders from listings.
Can be disabled with a flag if needed.

convert tests to data provider

add comment to the real-ip test

add custom client_ip_header

fix: 32bit IP tests w/string of decimal representation, overflows

Math in PHP is hard!
sprintf("%.0f",0x7FFFFFFFFFFFFFFF) == sprintf("%.0f",0x7FFFFFFFFFFFFF00)

Changes
* 32bit gets own version o

fix: 32bit IP tests w/string of decimal representation, overflows

Math in PHP is hard!
sprintf("%.0f",0x7FFFFFFFFFFFFFFF) == sprintf("%.0f",0x7FFFFFFFFFFFFF00)

Changes
* 32bit gets own version of tests where expected values are strings
* decimalToBinary32 to replace `sprintf("%032b%032b"...)`, avoids overflow
* overflow check in ipv4 too
* refactor
* partsTo64 for 32bit parts into dec value as str (bcmath)
* Ip32::$b32 as class constant
* condition always PHP_INT_SIZE == 4 for 32bit (instead of == 8 for 64)

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refactor(ip): PSR-12 functions

bitmask64_32 -> bitmask64On32
make_bitmask_32 -> makeBitmaskOn32
ipv6_upper_lower_32 -> ipv6UpperLowerOn32

also
* uncomment working 7FFF ipv6 test a

refactor(ip): PSR-12 functions

bitmask64_32 -> bitmask64On32
make_bitmask_32 -> makeBitmaskOn32
ipv6_upper_lower_32 -> ipv6UpperLowerOn32

also
* uncomment working 7FFF ipv6 test and
* fix README suggested podman to use `docker://wpstaging`

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refactor preference cookie handling. fixes #4544

This refactors the DOKU_PREF cookie handling on the PHP side into a
class. It makes encoding/decoding more explicit and easier to
understand.

The ne

refactor preference cookie handling. fixes #4544

This refactors the DOKU_PREF cookie handling on the PHP side into a
class. It makes encoding/decoding more explicit and easier to
understand.

The new class is used in set_doku_pref() and get_doku_pref() which have
not been deprecated for now.

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fix(inc/Ip): 32bit arch compatible range check

* added docs about running tests on 32bit w/ podman.
* Updated tests to use string instead of int for comparison when 32bit.
* added `make_bitmask_3

fix(inc/Ip): 32bit arch compatible range check

* added docs about running tests on 32bit w/ podman.
* Updated tests to use string instead of int for comparison when 32bit.
* added `make_bitmask_32` and `bitmask64_32`. updated `ipInRange` to
use them.

Test failing for `test_ip_to_number`
```
podman run -v $PWD/..:/dokuwiki \
--workdir /dokuwiki/_test -it \
docker://wpstaging/php:8.3-32bit \
./vendor/bin/phpunit --verbose --stderr --filter ip_test
```

```

1) ip_test::test_ip_to_number with data set #3 ('38AF:3033:AA39:CDE3:1A46:094C...D:5300', 6, 4.084536385505709E+18, 1.8932109165344407E+18)
Failed asserting that two strings are identical.
--- Expected
+++ Actual
@@ @@
-'4084536385505709056'
+'4084536381210742243'

/dokuwiki/_test/tests/inc/Ip.test.php:52

2) ip_test::test_ip_to_number with data set #5 ('193.53.125.7', 4, 0, 3241508103)
Failed asserting that -1053459193 is identical to 3241508103.

```

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extend tests, fix issues with new Ip methods

Add experimental tree builder classes

These classes provide mechanisms to build a traversable tree of pages
and links. Either from the existing namespace structure, or from a
control page containing

Add experimental tree builder classes

These classes provide mechanisms to build a traversable tree of pages
and links. Either from the existing namespace structure, or from a
control page containing (possibly a nested) set of links.

The nodes returned by the tree are deliberately sparse. No ACL checking
is taking place. Developers can enrich (or omit) nodes and influence
recursion decisions via callbacks.

The tree can optionally be sorted by comparators provided in the
TreeSort class or a custom callback.

The API provided by these classes is not considered stable yet and may
change over time. Plugin authors are encouraged to use them and provide
feedback.

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Added API endpoint core.getMediaHistory #4147

squashed commits of #4369

Fix Ip tests

We no longer use the old regexp based config, so the tests failed.

use renamed trustedproxies setting in tests

adjusted tests for new buildURLparams()

null values are no longer added as empty parameters.

allow to set unusable password

This could be used by plugins such as dokuwiki-plugin-oauth to create
accounts that can only by accessed via SSO.

use new expectLogMessage to check condition tested in test_savesequence4()

io_replaceInFile: replace warning with logging call

replace deprecated phpunit assertions

Fix MD5 hash calculation tests

alternative token header support

The Authorization header is not always passed on to PHP, depending on
the setup (See https://stackoverflow.com/q/34472303 for examples and
workarounds).

This patch

alternative token header support

The Authorization header is not always passed on to PHP, depending on
the setup (See https://stackoverflow.com/q/34472303 for examples and
workarounds).

This patch adds support for an alternative X-DokuWiki-Token header that
can be used when using token authentication and the standard
Authorization header can not be used.

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