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Match CMaNGOS module sanity and known door hash Warden checks

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Kelsi 2026-02-20 01:57:21 -08:00
parent c2c019622d
commit 93aad0f104
1 changed files with 47 additions and 2 deletions
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49
src/game/game_handler.cpp
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@ -35,6 +35,7 @@
#include <unordered_map>
#include <unordered_set>
#include <functional>
#include <array>
#include <cstdlib>
#include <cstring>
#include <limits>
@ -206,6 +207,33 @@ std::vector<uint8_t> readFileBinary(const std::string& fsPath) {
return data;
}
bool hmacSha1Matches(const uint8_t seedBytes[4], const std::string& text, const uint8_t expected[20]) {
uint8_t out[SHA_DIGEST_LENGTH];
unsigned int outLen = 0;
HMAC(EVP_sha1(),
seedBytes, 4,
reinterpret_cast<const uint8_t*>(text.data()),
static_cast<int>(text.size()),
out, &outLen);
return outLen == SHA_DIGEST_LENGTH && std::memcmp(out, expected, SHA_DIGEST_LENGTH) == 0;
}
const std::unordered_map<std::string, std::array<uint8_t, 20>>& knownDoorHashes() {
static const std::unordered_map<std::string, std::array<uint8_t, 20>> k = {
{"world\\lordaeron\\stratholme\\activedoodads\\doors\\nox_door_plague.m2",
{0xB4,0x45,0x2B,0x6D,0x95,0xC9,0x8B,0x18,0x6A,0x70,0xB0,0x08,0xFA,0x07,0xBB,0xAE,0xF3,0x0D,0xF7,0xA2}},
{"world\\kalimdor\\onyxiaslair\\doors\\onyxiasgate01.m2",
{0x75,0x19,0x5E,0x4A,0xED,0xA0,0xBC,0xAF,0x04,0x8C,0xA0,0xE3,0x4D,0x95,0xA7,0x0D,0x4F,0x53,0xC7,0x46}},
{"world\\generic\\human\\activedoodads\\doors\\deadminedoor02.m2",
{0x3D,0xFF,0x01,0x1B,0x9A,0xB1,0x34,0xF3,0x7F,0x88,0x50,0x97,0xE6,0x95,0x35,0x1B,0x91,0x95,0x35,0x64}},
{"world\\kalimdor\\silithus\\activedoodads\\ahnqirajdoor\\ahnqirajdoor02.m2",
{0xDB,0xD4,0xF4,0x07,0xC4,0x68,0xCC,0x36,0x13,0x4E,0x62,0x1D,0x16,0x01,0x78,0xFD,0xA4,0xD0,0xD2,0x49}},
{"world\\kalimdor\\diremaul\\activedoodads\\doors\\diremaulsmallinstancedoor.m2",
{0x0D,0xC8,0xDB,0x46,0xC8,0x55,0x49,0xC0,0xFF,0x1A,0x60,0x0F,0x6C,0x23,0x63,0x57,0xC3,0x05,0x78,0x1A}},
};
return k;
}
bool isReadableQuestText(const std::string& s, size_t minLen, size_t maxLen) {
if (s.size() < minLen || s.size() > maxLen) return false;
bool hasAlpha = false;
@ -3734,8 +3762,16 @@ void GameHandler::handleWardenData(network::Packet& packet) {
bool found = false;
std::vector<uint8_t> hash(20, 0);
if (!filePath.empty()) {
std::string normalizedPath = asciiLower(filePath);
std::replace(normalizedPath.begin(), normalizedPath.end(), '/', '\\');
auto knownIt = knownDoorHashes().find(normalizedPath);
if (knownIt != knownDoorHashes().end()) {
found = true;
hash.assign(knownIt->second.begin(), knownIt->second.end());
}
auto* am = core::Application::getInstance().getAssetManager();
if (am && am->isInitialized()) {
if (am && am->isInitialized() && !found) {
// Use a case-insensitive direct filesystem resolution first.
// Manifest entries may point at uppercase duplicate trees with
// different content/hashes than canonical client files.
@ -3793,9 +3829,18 @@ void GameHandler::handleWardenData(network::Packet& packet) {
", expected=", moduleSize, "), consuming remainder");
pos = checkEnd;
} else {
const uint8_t* p = decrypted.data() + pos;
uint8_t seedBytes[4] = { p[0], p[1], p[2], p[3] };
uint8_t reqHash[20];
std::memcpy(reqHash, p + 4, 20);
pos += moduleSize;
// CMaNGOS sanity check expects kernel32.dll to be found.
bool shouldReportFound = hmacSha1Matches(seedBytes, "kernel32.dll", reqHash);
resultData.push_back(shouldReportFound ? 0x4A : 0x01);
break;
}
// Response: [uint8 result=1] (module NOT loaded = clean)
// Truncated module request fallback: module NOT loaded = clean
resultData.push_back(0x01);
break;
}