Implement the three stubbed Warden module callbacks that were previously
TODO placeholders:
- **sendPacket**: Encrypts module output via WardenCrypto RC4 and sends
as CMSG_WARDEN_DATA through the game socket. Enables modules to send
responses back to the server (required for strict servers like Warmane).
- **validateModule**: Compares the module's provided 16-byte MD5 hash
against the hash received during download. Logs error on mismatch
(indicates corrupted module transit).
- **generateRC4**: Derives new encrypt/decrypt RC4 keys from a 16-byte
seed using SHA1Randx, then replaces the active WardenCrypto key state.
Handles mid-session re-keying requested by the module.
Architecture:
- Add setCallbackDependencies() to inject WardenCrypto* and socket send
function into WardenModule before load() is called
- Use thread_local WardenModule* so C function pointer callbacks (which
can't capture state) can reach the module's dependencies during init
- Wire dependencies from WardenHandler before module load
Also update warden_module.hpp status markers — RSA verification, zlib,
executable parsing, relocation, and Unicorn emulation are all implemented
(were incorrectly marked as TODO). Only API binding/IAT patching and
RSA modulus verification against real WoW.exe remain as gaps.
Previously initializeModule() read the 4 WardenFuncList function addresses
from emulated memory, logged them, then discarded them — funcList_ was never
populated, so tick(), generateRC4Keys(), and processCheckRequest() were
permanently no-ops even when the Unicorn emulator successfully ran the module.
Changes:
- initializeModule() now wraps each non-null emulated function address in a
std::function lambda that marshals args to/from emulated memory via
emulator_->writeData/callFunction/freeMemory
- generateRC4Keys: copies 4-byte seed to emulated space, calls function
- unload: calls function with NULL (module saves own RC4 state)
- tick: direct uint32_t(deltaMs) dispatch, returns emulated EAX
- packetHandler: 2-arg variant for generic callers
- Stores emulatedPacketHandlerAddr_ for full 4-arg call in processCheckRequest
- processCheckRequest() now calls the emulated PacketHandler with the proper
4-argument stdcall convention: (data, size, responseOut, responseSizeOut),
reads back the response size and bytes, returns them in responseOut
- unload() resets emulatedPacketHandlerAddr_ to 0 for clean re-initialization
- Remove dead no-op renderObjectiveTracker() (no call sites, superseded)
Fix critical skip/copy parsing bug where source pointer advanced for
both skip and copy sections (skip has no source data). Implement real
relocations using delta-encoded offsets. Strip RSA signature before
zlib decompression. Load module when download completes and cache to
disk. Add empirical hash testing against CR entries and compute
SHA1(moduleImage) response with SHA1Randx key derivation for any seed.
