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A2S_Rules fix: Only change host_rules_show if patching was successful (#1459)

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If lookup of the patch location failed, don't turn on responding to A2S_Rules queries. Otherwise we'll see the log getting spammed with too large packet sizes again. #1447
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peace-maker 2021-04-19 09:33:36 +02:00 committed by GitHub
parent 2b1cc43355
commit 1fbe5e1daa
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 17 additions and 13 deletions
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18
extensions/cstrike/rulesfix.cpp
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@ -46,21 +46,21 @@ RulesFix::RulesFix() :
{ {
} }
void SetMTUMax(int iValue) bool SetMTUMax(int iValue)
{ {
static int iOriginalValue = -1; static int iOriginalValue = -1;
static int *m_pMaxMTU = nullptr; static int *m_pMaxMTU = nullptr;
//If we never changed skip resetting //If we never changed skip resetting
if (iOriginalValue == -1 && iValue == -1) if (iOriginalValue == -1 && iValue == -1)
return; return true;
if (m_pMaxMTU == nullptr) if (m_pMaxMTU == nullptr)
{ {
if (!g_pGameConf->GetAddress("MaxMTU", (void **)&m_pMaxMTU)) if (!g_pGameConf->GetAddress("MaxMTU", (void **)&m_pMaxMTU))
{ {
g_pSM->LogMessage(myself, "[CStrike] Failed to locate NET_SendPacket signature."); g_pSM->LogMessage(myself, "[CStrike] Failed to locate NET_SendPacket signature.");
return; return false;
} }
SourceHook::SetMemAccess(m_pMaxMTU, sizeof(int), SH_MEM_READ | SH_MEM_WRITE | SH_MEM_EXEC); SourceHook::SetMemAccess(m_pMaxMTU, sizeof(int), SH_MEM_READ | SH_MEM_WRITE | SH_MEM_EXEC);
@ -72,19 +72,21 @@ void SetMTUMax(int iValue)
*m_pMaxMTU = iOriginalValue; *m_pMaxMTU = iOriginalValue;
else else
*m_pMaxMTU = iValue; *m_pMaxMTU = iValue;
return true;
} }
void RulesFix::OnLoad() void RulesFix::OnLoad()
{ {
host_rules_show = g_pCVar->FindVar("host_rules_show"); host_rules_show = g_pCVar->FindVar("host_rules_show");
if (host_rules_show) if (host_rules_show)
{
if (SetMTUMax(5000))
{ {
// Default to enabled. Explicit disable via cfg will still be obeyed. // Default to enabled. Explicit disable via cfg will still be obeyed.
host_rules_show->SetValue(true); host_rules_show->SetValue(true);
SetMTUMax(5000);
bPatched = true; bPatched = true;
} }
}
SH_ADD_HOOK(IServerGameDLL, GameServerSteamAPIActivated, gamedll, SH_MEMBER(this, &RulesFix::Hook_GameServerSteamAPIActivated), true); SH_ADD_HOOK(IServerGameDLL, GameServerSteamAPIActivated, gamedll, SH_MEMBER(this, &RulesFix::Hook_GameServerSteamAPIActivated), true);
} }
@ -122,16 +124,18 @@ static void OnConVarChanged(IConVar *var, const char *pOldValue, float flOldValu
{ {
if (!bPatched) if (!bPatched)
{ {
SetMTUMax(5000); if (SetMTUMax(5000))
{
bPatched = true; bPatched = true;
NotifyAllCVars(); NotifyAllCVars();
} }
} }
}
else else
{ {
if (bPatched) if (bPatched)
{ {
SetMTUMax(-1); if (SetMTUMax(-1))
bPatched = false; bPatched = false;
} }
} }