125 lines
2.7 KiB
C++
125 lines
2.7 KiB
C++
#include "./plugin.hpp"
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// https://youtu.be/RsHGUL5E1_s
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#define SOLANA_PLUGIN_HOST
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#include "./solana_plugin_v1.h"
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#if (defined(_WIN32) || defined(_WIN64))
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#undef WIN32_LEAN_AND_MEAN
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#else
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#include <dlfcn.h>
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#endif
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#if defined(_WIN32) || defined(_WIN64)
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#define WINDOWS
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#elif defined(__APPLE__)
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#define APPLE
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#else
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#define LINUX
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#endif
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#include <iostream>
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#include <cassert>
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void* Plugin::loadSymbol(const char* s_name) {
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#if defined(_WIN32) || defined(_WIN64)
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return GetProcAddress(_dl, s_name);
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#else
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return dlsym(_dl, s_name);
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#endif
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}
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// loads lib and gets name (and version)
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Plugin::Plugin(const char* path) {
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#if defined(_WIN32) || defined(_WIN64)
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_dl = (void*)LoadLibraryA(path);
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#else
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_dl = (void*)dlopen(path, RTLD_NOW /*| RTLD_LOCAL*/);
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#endif
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if (!_dl) {
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std::cerr << "PLG opening '" << path << "' failed\n";
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return;
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}
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_fn_name = loadSymbol("solana_plugin_get_name");
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_fn_version = loadSymbol("solana_plugin_get_version");
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_fn_start = loadSymbol("solana_plugin_start");
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_fn_stop = loadSymbol("solana_plugin_stop");
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_fn_tick = loadSymbol("solana_plugin_tick");
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if (!_fn_name || !_fn_version || !_fn_start || !_fn_stop || !_fn_tick) {
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std::cerr << "PLG '" << path << "' misses functions\n";
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return;
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}
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name = reinterpret_cast<decltype(&solana_plugin_get_name)>(_fn_name)();
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if (name.empty()) {
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std::cerr << "PLG '" << path << "' misses name\n";
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return;
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}
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version = reinterpret_cast<decltype(&solana_plugin_get_version)>(_fn_version)();
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if (version != SOLANA_PLUGIN_VERSION) {
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std::cerr << "PLG '" << path << "' version mismatch IS:" << version << " SHOULD:" << SOLANA_PLUGIN_VERSION << "\n";
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return;
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}
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valid_plugin = true;
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}
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Plugin::Plugin(Plugin&& other) {
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valid_plugin = other.valid_plugin;
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name = other.name;
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_dl = other._dl;
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other._dl = nullptr;
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_fn_name = other._fn_name;
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other._fn_name = nullptr;
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_fn_start = other._fn_start;
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other._fn_start = nullptr;
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_fn_stop = other._fn_stop;
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other._fn_stop = nullptr;
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_fn_tick = other._fn_tick;
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other._fn_tick = nullptr;
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}
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// unloads the plugin
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Plugin::~Plugin(void) {
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if (_dl != nullptr) {
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#if defined(_WIN32) || defined(_WIN64)
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FreeLibrary(_dl);
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#else
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dlclose(_dl);
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#endif
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}
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}
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// runs the start function
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uint32_t Plugin::start(SolanaAPI* solana_api) const {
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assert(valid_plugin);
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return reinterpret_cast<decltype(&solana_plugin_start)>(_fn_start)(solana_api);
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}
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// stop function
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void Plugin::stop(void) const {
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assert(valid_plugin);
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reinterpret_cast<decltype(&solana_plugin_stop)>(_fn_stop)();
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}
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// tick function
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void Plugin::tick(float delta) const {
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assert(valid_plugin);
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reinterpret_cast<decltype(&solana_plugin_tick)>(_fn_tick)(delta);
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}
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