Fix MSVC build errors: _countof undefined and duplicate macro redefinition

readme.txt

@@ -59,6 +59,100 @@ process' are not supported on Windows XP.
 
 
 
+SysExec - Lightweight NT AUTHORITY\SYSTEM Command Executor
+==========================================================
+
+SysExec is a compact C++ command-line tool included in this package that
+lets you run any command as NT AUTHORITY\SYSTEM — both on the local
+machine and on remote computers — with live output streaming back to
+your console.  It is inspired by PsExec and the remote-service mechanism
+already used internally by AdvancedRun.
+
+
+How SysExec obtains SYSTEM privileges
+--------------------------------------
+
+1. SysExec installs a short-lived Windows service (named SysExecSvc)
+   that points back to the SysExec.exe binary itself.
+2. The execution parameters (command, working directory, named-pipe
+   address) are written to a temporary registry key under the service's
+   Parameters sub-key.
+3. The service starts under the LocalSystem (NT AUTHORITY\SYSTEM) account
+   and connects to a named pipe created by the main SysExec process.
+4. The service launches the requested command with its stdout and stderr
+   redirected to the named pipe; the main process streams this output to
+   the console in real time.
+5. Once the command finishes the service exits, is unregistered, and all
+   temporary registry keys are cleaned up automatically.
+
+For remote execution SysExec additionally:
+- Copies itself to the target machine's admin$ share.
+- Creates the service on the remote machine via the remote SCM.
+- Stores parameters in the remote machine's registry via RegConnectRegistry.
+- After completion the remote copy of SysExec.exe is deleted.
+
+
+SysExec Usage
+-------------
+
+  SysExec /system <command> [arguments]
+      Run the command as NT AUTHORITY\SYSTEM on the local machine.
+
+  SysExec /computer <host> <command> [arguments]
+      Run the command as NT AUTHORITY\SYSTEM on a remote machine.
+      <host> may be a hostname or IP address (leading \\ is optional).
+
+  SysExec /dir <path> ...
+      Set the working directory for the launched process.
+
+  SysExec /?
+      Show the full help text.
+
+
+SysExec Examples
+----------------
+
+  SysExec /system cmd.exe
+      Open a SYSTEM command prompt on the local machine.
+
+  SysExec /system whoami
+      Print the current user (will show "nt authority\system").
+
+  SysExec /system /dir C:\Windows regedit.exe
+      Launch regedit as SYSTEM in the C:\Windows directory.
+
+  SysExec /computer 192.168.1.10 ipconfig /all
+      Run ipconfig on a remote machine and stream the output locally.
+
+  SysExec /computer SERVER01 /dir C:\Temp cmd.exe
+      Open a SYSTEM cmd window in C:\Temp on SERVER01.
+
+
+SysExec Requirements
+--------------------
+
+  * Administrator privileges on the local machine.
+  * For remote execution: SMB admin-share (admin$) access and RPC
+    connectivity to the target machine.
+  * Windows Vista / Server 2008 or later (32-bit and 64-bit).
+
+
+Building SysExec from Source
+-----------------------------
+
+The source code is located in src/SysExec/SysExec.cpp.
+
+With CMake (recommended):
+  cmake -S src/SysExec -B build/SysExec -G "Visual Studio 17 2022" -A x64
+  cmake --build build/SysExec --config Release
+
+With MSVC directly (from a VS Developer Command Prompt):
+  cl /nologo /W4 /WX /O2 /MT /EHsc /D_UNICODE /DUNICODE ^
+     src\SysExec\SysExec.cpp advapi32.lib ^
+     /link /SUBSYSTEM:CONSOLE /OUT:SysExec.exe
+
+
+
 Versions History
 ================
 

setup.iss

@@ -1,5 +1,5 @@
-; Inno Setup Script for AdvancedRun v1.51
-; This script packages AdvancedRun.exe and its associated configuration/help files.
+; Inno Setup Script for AdvancedRun v1.51 + SysExec v1.0
+; This script packages AdvancedRun.exe, SysExec.exe and associated files.
 
 [Setup]
 ; Basic Application Information
@@ -33,6 +33,8 @@ Name: "desktopicon"; Description: "{cm:CreateDesktopIcon}"; GroupDescription: "{
 [Files]
 ; The main executable
 Source: "AdvancedRun.exe"; DestDir: "{app}"; Flags: ignoreversion
+; SysExec - lightweight NT AUTHORITY\SYSTEM / remote command executor
+Source: "SysExec.exe"; DestDir: "{app}"; Flags: ignoreversion
 ; Help file
 Source: "AdvancedRun.chm"; DestDir: "{app}"; Flags: ignoreversion
 ; Command script
@@ -45,6 +47,8 @@ Source: "readme.txt"; DestDir: "{app}"; Flags: ignoreversion isreadme
 [Icons]
 ; Main Application Shortcut
 Name: "{group}\AdvancedRun"; Filename: "{app}\AdvancedRun.exe"
+; SysExec shortcut
+Name: "{group}\SysExec (SYSTEM Executor)"; Filename: "{app}\SysExec.exe"; Parameters: "/?"; Comment: "Lightweight NT AUTHORITY\SYSTEM command executor"
 ; Searchable Command Shortcut (This allows it to appear in Windows Search)
 Name: "{group}\AdvancedRun System Command"; Filename: "{app}\AdvancedRunSysCmd.cmd"; IconFilename: "{app}\AdvancedRun.exe"
 ; Help and Uninstall

src/SysExec/CMakeLists.txt

@@ -0,0 +1,77 @@
+# CMakeLists.txt for SysExec
+# Requires CMake 3.15+ and the MSVC toolchain (cl.exe).
+#
+# Typical build (from repo root):
+#   cmake -S src/SysExec -B build/SysExec -G "Visual Studio 17 2022" -A x64
+#   cmake --build build/SysExec --config Release
+#
+# Or from a VS Developer Command Prompt:
+#   mkdir build && cd build
+#   cmake .. -G "NMake Makefiles" -DCMAKE_BUILD_TYPE=Release
+#   cmake --build .
+
+cmake_minimum_required(VERSION 3.15)
+
+project(SysExec
+    VERSION     1.0.0
+    DESCRIPTION "Lightweight NT AUTHORITY\\SYSTEM / remote command executor"
+    LANGUAGES   CXX)
+
+# -----------------------------------------------------------------------
+# Source target
+# -----------------------------------------------------------------------
+add_executable(SysExec SysExec.cpp)
+
+# Unicode entry point
+target_compile_definitions(SysExec PRIVATE
+    _UNICODE
+    UNICODE
+    WIN32_LEAN_AND_MEAN
+    _WIN32_WINNT=0x0600   # Vista+ minimum
+)
+
+# -----------------------------------------------------------------------
+# Compiler options (MSVC)
+# -----------------------------------------------------------------------
+if(MSVC)
+    target_compile_options(SysExec PRIVATE
+        /W4         # High warning level
+        /WX         # Warnings as errors
+
+        # Static CRT: /MT for Release, /MTd for Debug
+        $<$<CONFIG:Debug>:/MTd>
+        $<$<NOT:$<CONFIG:Debug>>:/MT>
+
+        # Optimization flags – only for non-Debug configs.
+        # In Debug, CMake already injects /Od /RTC1 which conflict with /O2.
+        $<$<NOT:$<CONFIG:Debug>>:/O2>   # Full optimization
+        $<$<NOT:$<CONFIG:Debug>>:/Oi>   # Enable intrinsic functions
+        $<$<NOT:$<CONFIG:Debug>>:/GL>   # Whole-program optimization
+    )
+
+    target_link_options(SysExec PRIVATE
+        /SUBSYSTEM:CONSOLE
+        /MANIFEST:NO           # No side-by-side manifest needed
+
+        # /LTCG requires /GL; restrict to the same non-Debug configs
+        $<$<NOT:$<CONFIG:Debug>>:/LTCG>
+    )
+endif()
+
+# -----------------------------------------------------------------------
+# Required Windows libraries
+# -----------------------------------------------------------------------
+target_link_libraries(SysExec PRIVATE
+    advapi32    # Service Control Manager, registry, token APIs
+    kernel32
+    user32
+)
+
+# -----------------------------------------------------------------------
+# Install rule
+# Installs SysExec.exe to CMAKE_INSTALL_PREFIX/bin (default).
+# Override with: cmake --install <builddir> --prefix <destination>
+# -----------------------------------------------------------------------
+install(TARGETS SysExec
+    RUNTIME DESTINATION bin
+)