feat: Allow custom CS# directory for flexible server deployment (aka. css_basepath) (#1033)

src/core/utils.h

@@ -2,6 +2,9 @@
 
 #include <public/eiface.h>
 #include <string>
+#include <filesystem>
+#include <regex>
+#include <algorithm>
 
 #include "core/globals.h"
 
@@ -9,7 +12,6 @@ namespace counterstrikesharp {
 namespace utils {
 
 static std::string gameDirectory;
-
 inline std::string GameDirectory()
 {
     if (gameDirectory.empty())
@@ -22,10 +24,58 @@ inline std::string GameDirectory()
     return gameDirectory;
 }
 
-inline std::string GetRootDirectory() { return GameDirectory() + "/addons/counterstrikesharp"; }
-inline std::string PluginsDirectory() { return GameDirectory() + "/addons/counterstrikesharp/plugins"; }
-inline std::string ConfigsDirectory() { return GameDirectory() + "/addons/counterstrikesharp/configs"; }
-inline std::string GamedataDirectory() { return GameDirectory() + "/addons/counterstrikesharp/gamedata"; }
+// clang-format off
+inline std::string RelativeDirectory(const std::string& initPath = "")
+{
+    static std::string storedPath;
+    static bool isInitialized = false;
+
+    if (!initPath.empty() && !isInitialized)
+    {
+        std::string processedPath = initPath;
+
+        processedPath.erase(processedPath.begin(), std::find_if(processedPath.begin(), processedPath.end(), [](unsigned char ch) {
+            return !std::isspace(ch);
+        }));
+
+        processedPath.erase(std::find_if(processedPath.rbegin(), processedPath.rend(), [](unsigned char ch) {
+            return !std::isspace(ch);
+        }).base(), processedPath.end());
+
+        processedPath = std::regex_replace(processedPath, std::regex(R"([\\/]+)"), "/");
+
+        if (!processedPath.empty())
+        {
+            if (processedPath[0] != '/')
+            {
+                processedPath = "/" + processedPath;
+            }
+            if (processedPath.back() == '/' && processedPath.length() > 1)
+            {
+                processedPath.pop_back();
+            }
+        }
+
+        std::string fullPath = GameDirectory() + processedPath;
+        if (std::filesystem::exists(fullPath) && std::filesystem::is_directory(fullPath))
+        {
+            storedPath = processedPath;
+            isInitialized = true;
+        }
+        else
+        {
+            return "NotFound";
+        }
+    }
+
+    return isInitialized ? storedPath : "/addons/counterstrikesharp";
+}
+// clang-format on
+
+inline std::string GetRootDirectory() { return GameDirectory() + RelativeDirectory(); }
+inline std::string PluginsDirectory() { return GameDirectory() + RelativeDirectory() + "/plugins"; }
+inline std::string ConfigsDirectory() { return GameDirectory() + RelativeDirectory() + "/configs"; }
+inline std::string GamedataDirectory() { return GameDirectory() + RelativeDirectory() + "/gamedata"; }
 
 } // namespace utils
 } // namespace counterstrikesharp

src/mm_plugin.cpp

@@ -34,6 +34,10 @@
 #include "scripting/dotnet_host.h"
 #include "scripting/script_engine.h"
 #include "tier0/vprof.h"
+#include "tier0/icommandline.h"
+#include "tier1/utlstringtoken.h"
+
+DLL_IMPORT ICommandLine* CommandLine();
 
 #define VERSION_STRING  "v" SEMVER " @ " GITHUB_SHA
 #define BUILD_TIMESTAMP __DATE__ " " __TIME__
@@ -95,7 +99,8 @@ bool CounterStrikeSharpMMPlugin::Load(PluginId id, ISmmAPI* ismm, char* error, s
 
     Log::Init();
 
-    CSSHARP_CORE_INFO("Initializing");
+    CSSHARP_CORE_INFO("Initializing with command line: {}", CommandLine()->GetCmdLine());
+    const char* basePath = CommandLine()->ParmValue(MakeStringToken("+css_basepath"), "/addons/counterstrikesharp");
 
     GET_V_IFACE_CURRENT(GetEngineFactory, globals::engineServer2, IVEngineServer2, SOURCE2ENGINETOSERVER_INTERFACE_VERSION);
     GET_V_IFACE_CURRENT(GetEngineFactory, globals::engine, IVEngineServer, INTERFACEVERSION_VENGINESERVER);
@@ -113,6 +118,13 @@ bool CounterStrikeSharpMMPlugin::Load(PluginId id, ISmmAPI* ismm, char* error, s
     g_pSource2GameEntities = globals::gameEntities;
     interfaces::pGameResourceServiceServer = (CGameResourceService*)g_pGameResourceServiceServer;
 
+    if (utils::RelativeDirectory(std::string(basePath)) == "NotFound")
+    {
+        CSSHARP_CORE_ERROR("Invalid base path: {}", basePath);
+        return false;
+    }
+    CSSHARP_CORE_INFO("Current root directory: {}", utils::GetRootDirectory());
+
     auto coreconfig_path = std::string(utils::ConfigsDirectory() + "/core");
     globals::coreConfig = new CCoreConfig(coreconfig_path);
     char coreconfig_error[255] = "";