WiiUPluginLoaderBackend/source/hooks.cpp

#include "hooks.h"
#include "utils/logger.h"

void CallHook(plugin_information_t *pluginInformation, wups_loader_hook_type_t hook_type) {
    CallHookEx(pluginInformation, hook_type, -1);
}

bool HasHookCallHook(plugin_information_t *pluginInformation, wups_loader_hook_type_t hook_type) {
    for (int32_t plugin_index = 0; plugin_index < pluginInformation->number_used_plugins; plugin_index++) {
        plugin_information_single_t *plugin_data = &pluginInformation->plugin_data[plugin_index];

        for (uint32_t j = 0; j < plugin_data->info.number_used_hooks; j++) {
            replacement_data_hook_t *hook_data = &plugin_data->info.hooks[j];
            if (hook_data->type == hook_type) {
                return true;
            }
        }
    }
    return false;
}

static const char **hook_names = (const char *[]) {
        "WUPS_LOADER_HOOK_INIT_WUT_MALLOC",
        "WUPS_LOADER_HOOK_FINI_WUT_MALLOC",
        "WUPS_LOADER_HOOK_INIT_WUT_NEWLIB",
        "WUPS_LOADER_HOOK_FINI_WUT_NEWLIB",
        "WUPS_LOADER_HOOK_INIT_WUT_STDCPP",
        "WUPS_LOADER_HOOK_FINI_WUT_STDCPP",
        "WUPS_LOADER_HOOK_INIT_WUT_DEVOPTAB",
        "WUPS_LOADER_HOOK_FINI_WUT_DEVOPTAB",

        "WUPS_LOADER_HOOK_INIT_PLUGIN",
        "WUPS_LOADER_HOOK_DEINIT_PLUGIN",
        "WUPS_LOADER_HOOK_APPLICATION_STARTS",
        "WUPS_LOADER_HOOK_FUNCTIONS_PATCHED",
        "WUPS_LOADER_HOOK_RELEASE_FOREGROUND",
        "WUPS_LOADER_HOOK_ACQUIRED_FOREGROUND",
        "WUPS_LOADER_HOOK_APPLICATION_REQUESTS_EXIT",
        "WUPS_LOADER_HOOK_APPLICATION_ENDS",
        "WUPS_LOADER_HOOK_VSYNC"};

void CallHookEx(plugin_information_t *pluginInformation, wups_loader_hook_type_t hook_type, int32_t plugin_index_needed) {
    if(hook_type != WUPS_LOADER_HOOK_VSYNC) {
        DEBUG_FUNCTION_LINE_VERBOSE("Calling hook of type %s [%d]", hook_names[hook_type], hook_type);
    }
    for (int32_t plugin_index = 0; plugin_index < pluginInformation->number_used_plugins; plugin_index++) {
        plugin_information_single_t *plugin_data = &pluginInformation->plugin_data[plugin_index];
        if (plugin_index_needed != -1 && plugin_index_needed != plugin_index) {
            continue;
        }

        //DEBUG_FUNCTION_LINE("Checking hook functions for %s.",plugin_data->plugin_name);
        //DEBUG_FUNCTION_LINE("Found hooks: %d",plugin_data->number_used_hooks);
        for (uint32_t j = 0; j < plugin_data->info.number_used_hooks; j++) {
            replacement_data_hook_t *hook_data = &plugin_data->info.hooks[j];
            if (hook_data->type == hook_type) {
                if(hook_data->type != WUPS_LOADER_HOOK_VSYNC){
                    DEBUG_FUNCTION_LINE("Calling hook of type %s for plugin %s [%d]", hook_names[hook_data->type], plugin_data->meta.name, hook_type);
                }
                void *func_ptr = hook_data->func_pointer;
                if (func_ptr != nullptr) {
                    //DEBUG_FUNCTION_LINE("function pointer is %08x",func_ptr);
                    if (hook_type == WUPS_LOADER_HOOK_INIT_PLUGIN) {
                        ((void (*)()) ((uint32_t *) func_ptr))();
                    } else if (hook_type == WUPS_LOADER_HOOK_DEINIT_PLUGIN) {
                        ((void (*)()) ((uint32_t *) func_ptr))();
                    } else if (hook_type == WUPS_LOADER_HOOK_APPLICATION_STARTS) {
                        ((void (*)()) ((uint32_t *) func_ptr))();
                    } else if (hook_type == WUPS_LOADER_HOOK_FUNCTIONS_PATCHED) {
                        ((void (*)()) ((uint32_t *) func_ptr))();
                    } else if (hook_type == WUPS_LOADER_HOOK_APPLICATION_ENDS) {
                        ((void (*)()) ((uint32_t *) func_ptr))();
                    } else if (hook_type == WUPS_LOADER_HOOK_APPLICATION_REQUESTS_EXIT) {
                        ((void (*)()) ((uint32_t *) func_ptr))();
                    } else if (hook_type == WUPS_LOADER_HOOK_INIT_WUT_MALLOC) {
                        ((void (*)()) ((uint32_t *) func_ptr))();
                    } else if (hook_type == WUPS_LOADER_HOOK_FINI_WUT_MALLOC) {
                        ((void (*)()) ((uint32_t *) func_ptr))();
                    } else if (hook_type == WUPS_LOADER_HOOK_INIT_WUT_NEWLIB) {
                        ((void (*)()) ((uint32_t *) func_ptr))();
                    } else if (hook_type == WUPS_LOADER_HOOK_FINI_WUT_NEWLIB) {
                        ((void (*)()) ((uint32_t *) func_ptr))();
                    } else if (hook_type == WUPS_LOADER_HOOK_INIT_WUT_STDCPP) {
                        ((void (*)()) ((uint32_t *) func_ptr))();
                    } else if (hook_type == WUPS_LOADER_HOOK_FINI_WUT_STDCPP) {
                        ((void (*)()) ((uint32_t *) func_ptr))();
                    } else if (hook_type == WUPS_LOADER_HOOK_INIT_WUT_DEVOPTAB) {
                        ((void (*)()) ((uint32_t *) func_ptr))();
                    } else if (hook_type == WUPS_LOADER_HOOK_FINI_WUT_DEVOPTAB) {
                        ((void (*)()) ((uint32_t *) func_ptr))();
                    } else if (hook_type == WUPS_LOADER_HOOK_RELEASE_FOREGROUND) {
                        ((void (*)()) ((uint32_t *) func_ptr))();
                    } else if (hook_type == WUPS_LOADER_HOOK_ACQUIRED_FOREGROUND) {
                        ((void (*)()) ((uint32_t *) func_ptr))();
                    } else if (hook_type == WUPS_LOADER_HOOK_VSYNC) {
                        ((void (*)()) ((uint32_t *) func_ptr))();
                    } else {
                        DEBUG_FUNCTION_LINE("######################################");
                        DEBUG_FUNCTION_LINE("Hook is not implemented %s [%d]", hook_names[hook_type], hook_type);
                        DEBUG_FUNCTION_LINE("######################################");
                    }
                } else {
                    DEBUG_FUNCTION_LINE("Failed to call hook. It was not defined");
                }
            }
        }
    }
}