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[Rules] Add rules for requiring custom files from client (#4561)

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* rules for enabling requiring custom files

* shorten default

* variable name

* check account status for enforcing client key

* rule for custom files admin level

---------

Co-authored-by: Paul Johnson <Paul@pjohnsomac-6366.digi.box>
This commit is contained in:
Paul Johnson 2024-12-11 23:47:50 -08:00 committed by GitHub
parent 3f3c0f2fda
commit 3b779ef301
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GPG Key ID: B5690EEEBB952194
2 changed files with 14 additions and 0 deletions
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3
common/ruletypes.h
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@ -340,6 +340,9 @@ RULE_STRING(World, Rules, "", "Server Rules, change from empty to have this be u
RULE_BOOL(World, EnableAutoLogin, false, "Enables or disables auto login of characters, allowing people to log characters in directly from loginserver to ingame")
RULE_BOOL(World, EnablePVPRegions, true, "Enables or disables PVP Regions automatically setting your PVP flag")
RULE_STRING(World, SupportedClients, "", "Comma-delimited list of clients to restrict to. Supported values are Titanium | SoF | SoD | UF | RoF | RoF2. Example: Titanium,RoF2")
RULE_STRING(World, CustomFilesKey, "", "Enable if the server requires custom files and sends a key to validate. Empty string to disable. Example: eqcustom_v1")
RULE_STRING(World, CustomFilesUrl, "github.com/knervous/eqnexus/releases", "URL to display at character select if client is missing custom files")
RULE_INT(World, CustomFilesAdminLevel, 20, "Admin level at which custom file key is not required when CustomFilesKey is specified")
RULE_CATEGORY_END()
RULE_CATEGORY(Zone)

11
world/client.cpp
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@ -541,6 +541,17 @@ bool Client::HandleSendLoginInfoPacket(const EQApplicationPacket *app)
skip_char_info = true;
}
}
const auto& custom_files_key = RuleS(World, CustomFilesKey);
if (!skip_char_info && !custom_files_key.empty() && cle->Admin() < RuleI(World, CustomFilesAdminLevel)) {
// Modified clients can utilize this unused block in login_info to send custom payloads on login
// which indicates they are using custom client files with the correct version, based on key payload.
const auto client_key = std::string(reinterpret_cast<char*>(login_info->unknown064));
if (custom_files_key != client_key) {
std::string message = fmt::format("Missing Files [{}]", RuleS(World, CustomFilesUrl) );
SendUnsupportedClientPacket(message);
skip_char_info = true;
}
}
if (!skip_char_info) {
SendExpansionInfo();