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server-re/docs/ARCHITECTURE.md
Benjamin Palko 66708f50aa add docs on shared architecture
2026-10-14 17:49:46 -04:00

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Architecture — Rusty Hearts server binaries

What is known about how the shipped server binaries are built and structured. Each claim is marked observed, inference, or unknown (see AGENTS.md).

Shared framework (config files, server kinds, DB access path): see SHARED_FRAMEWORK.md.

Implementation language: C++

All 16 server executables in binaries/ are written in C++, compiled with MSVC 2010 (Visual C++ 10) for Windows x64.

Marker Why it implies C++ Where seen
MSVC RTTI type descriptors (.?AV…@@), including templates Emitted only for C++ polymorphic classes All 16 EXEs (161–1,035 each)
__CxxFrameHandler3 import C++ exception-handling runtime All 16 EXEs
MSVCP100.dll import (std:: streams/containers) C++ standard library, VS2010 All 16 EXEs
Linker version 10, MSVCR100.dll VS2010 toolchain (matches vcrun2010 dependency) Agent (checked)
vftables, operator new/delete, multiple vftables per class Virtual dispatch, multiple inheritance Agent (decompiled)

Status:

  • Observed (decompiled): Agent_Release_x64.exe. See decomp/Agent_Release_x64/evidence.md and cpp/classes.hpp.
  • Observed (markers only): the other 15 EXEs. The RTTI, C++ EH and MSVCP100 checks were run with strings and objdump on 2026-10-14; they have not been decompiled yet.
  • Unknown: the support DLLs are a mix. OpenSSL and curl are C, BugTrap is C++, and the proprietary DLLs are unchecked (see third-party/README.md).

Implications for decompilation:

  • Ghidra produces C-like pseudocode. C++ structure is not recovered automatically. Recover it from RTTI and vftables (decomp/scripts/VTableMap.java).
  • No PDBs are shipped, so method names, signatures and data members are unknown unless reconstructed.

Statically linked libraries (observed in Agent; others unchecked)

  • ProudNet (Nettention, proprietary): networking and RMI. Headers are local-only; see third-party/README.md.
  • TinyXML 2.5.x (inference: 2.5.1–2.5.3, from its error table). XML config parsing (TiXml* classes); present in 14 of 16 EXEs. Source is in third-party/tinyxml-2.5.3/.
  • ATL: CAtlException and related classes.

Application code conventions (observed in Agent)

  • Class prefixes are Magi* / MG* / MB*, for example MagiAgentServer, MGAgentManagerSession and MBCLog.
    • The singletons use the MBISingleton<T> template.
    • The timer class is Magi::Timer.
  • Inter-server RMI interfaces live in namespaces named <FROM>2<TO>_PROTOCOL, for example AGENT2AGENTMANAGER_PROTOCOL. Each generated Proxy / Stub class is wrapped in the RNP namespace.
  • Config is XML under option\*.xml.
  • Whether the other servers share this framework is an inference, based on their names and similar RTTI counts. It is unverified.