aboutsummaryrefslogtreecommitdiff
path: root/NorthstarDLL/dllmain.cpp
blob: aa808bf5b9fdf1aa831664814b3f7eb5a06fe323 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
#include "pch.h"
#include "main.h"
#include "logging.h"
#include "crashhandler.h"
#include "memalloc.h"
#include "nsprefix.h"
#include "plugin_abi.h"
#include "plugins.h"
#include "version.h"
#include "pch.h"

#include "rapidjson/document.h"
#include "rapidjson/stringbuffer.h"
#include "rapidjson/writer.h"
#include "rapidjson/error/en.h"

#include <string.h>
#include <filesystem>
namespace fs = std::filesystem;

 typedef void (*initPluginFuncPtr)(void* (*getPluginObject)(PluginObject));

BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved)
{
	switch (ul_reason_for_call)
	{
	case DLL_PROCESS_ATTACH:
	case DLL_THREAD_ATTACH:
	case DLL_THREAD_DETACH:
	case DLL_PROCESS_DETACH:
		break;
	}

	return TRUE;
}

void freeLibrary(HMODULE hLib)
{
	if (!FreeLibrary(hLib))
	{
		spdlog::error("There was an error while trying to free library");
	}
}

bool LoadPlugins()
{

	std::vector<fs::path> paths;

	std::string pluginPath = GetNorthstarPrefix() + "/plugins";
	if (!fs::exists(pluginPath))
	{
		spdlog::warn("Could not find a plugins directory. Skipped loading plugins");
		return false;
	}
	// ensure dirs exist
	fs::recursive_directory_iterator iterator(pluginPath);
	if (std::filesystem::begin(iterator) == std::filesystem::end(iterator))
	{
		spdlog::warn("Could not find any plugins. Skipped loading plugins");
		return false;
	}
	for (auto const& entry : iterator)
	{
		if (fs::is_regular_file(entry) && entry.path().extension() == ".dll")
			paths.emplace_back(entry.path().filename());
	}
	initGameState();
	for (fs::path path : paths)
	{
		std::string pathstring = (pluginPath / path).string();
		std::wstring wpath = (pluginPath / path).wstring();

		LPCWSTR wpptr = wpath.c_str();
		HMODULE datafile =
			LoadLibraryExW(wpptr, 0, LOAD_LIBRARY_AS_DATAFILE | LOAD_LIBRARY_AS_IMAGE_RESOURCE); // Load the DLL as a data file
		if (datafile == NULL)
		{
			spdlog::info("Failed to load library {}: ", std::system_category().message(GetLastError()));
			continue;
		}
		HRSRC manifestResource = FindResourceW(datafile, MAKEINTRESOURCEW(101), MAKEINTRESOURCEW(RT_RCDATA));

		if (manifestResource == NULL)
		{
			spdlog::info("Could not find manifest for library {}", pathstring);
			freeLibrary(datafile);
			continue;
		}
		spdlog::info("Loading resource from library");
		HGLOBAL myResourceData = LoadResource(datafile, manifestResource);
		if (myResourceData == NULL)
		{
			spdlog::error("Failed to load resource from library");
			freeLibrary(datafile);
			continue;
		}
		int manifestSize = SizeofResource(datafile, manifestResource);
		std::string manifest = std::string((const char*)LockResource(myResourceData), 0, manifestSize);
		freeLibrary(datafile);

		rapidjson_document manifestJSON;
		manifestJSON.Parse(manifest.c_str());

		if (manifestJSON.HasParseError())
		{
			spdlog::error("Manifest for {} was invalid", pathstring);
			continue;
		}
		if (!manifestJSON.HasMember("api_version"))
		{
			spdlog::error("{} does not have a version number in its manifest", pathstring);
			continue;
			// spdlog::info(manifestJSON["version"].GetString());
		}
		if (strcmp(manifestJSON["api_version"].GetString(), std::to_string(ABI_VERSION).c_str()))
		{
			spdlog::error("{} has an incompatible API version number in its manifest", pathstring);
			continue;
		}
		// Passed all checks, going to actually load it now

		HMODULE pluginLib = LoadLibraryW(wpptr); // Load the DLL as a data file
		if (pluginLib == NULL)
		{
			spdlog::info("Failed to load library {}: ", std::system_category().message(GetLastError()));
			continue;
		}
		initPluginFuncPtr initPlugin = (initPluginFuncPtr)GetProcAddress(pluginLib, "initializePlugin");
		if (initPlugin == NULL)
		{
			spdlog::info("Library {} has no function initializePlugin", pathstring);
			continue;
		}
		spdlog::info("Succesfully loaded {}", pathstring);
		initPlugin(&getPluginObject);
	}
	return true;
}

bool InitialiseNorthstar()
{
	static bool bInitialised = false;
	if (bInitialised)
		return false;

	bInitialised = true;

	InitialiseNorthstarPrefix();
	InitialiseVersion();

	// Fix some users' failure to connect to respawn datacenters
	SetEnvironmentVariableA("OPENSSL_ia32cap", "~0x200000200000000");

	curl_global_init_mem(CURL_GLOBAL_DEFAULT, _malloc_base, _free_base, _realloc_base, _strdup_base, _calloc_base);

	InitialiseCrashHandler();
	InitialiseLogging();
	InstallInitialHooks();
	CreateLogFiles();

	// Write launcher version to log
	spdlog::info("NorthstarLauncher version: {}", version);

	// run callbacks for any libraries that are already loaded by now
	CallAllPendingDLLLoadCallbacks();

	return true;
}