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TravianZ Patcher
421915f774
The profile already had a language selector (Templates/Profile/preference.tpl)
that saved the choice into users.lang and $_SESSION['lang'], but the saved
preference was never used to actually load the language: every page loads
include("Lang/".LANG.".php") with the server-wide LANG constant, so changing
the language in the profile had no visible effect.
This wires it up:
- Introduce SERVER_LANG (the server default) and make LANG the EFFECTIVE
display language, resolved from the player's saved preference
($_SESSION['lang']) with a fallback to SERVER_LANG
(install/data/constant_format.tpl).
SECURITY: the value is sanitized to [a-z_] and the target Lang/<x>.php
file must exist, otherwise we fall back to the server default. This
prevents Local File Inclusion via include("Lang/".LANG.".php").
- Seed $_SESSION['lang'] from users.lang on login (GameEngine/Session.php,
PopulateVar), so the chosen language applies right after logging in.
- Keep the SERVER default intact when an admin saves settings: the admin
config regenerators and the "Server Settings"/config displays now use
SERVER_LANG (the server default) instead of the per-user LANG, so an
admin browsing in their own language can't accidentally overwrite the
server default (6 Admin/Mods/edit*.php + editServerSet.tpl + config.tpl).
Note: existing installs must also add SERVER_LANG + the LANG resolution to
their generated GameEngine/config.php (and the Admin/Mods/constant_format.tpl
copy) since config is generated at install time.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>