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#include <lua-plugin.h>
#include <Input.h>
#if defined(_WIN32)
#define SHARED_EXT "dll"
#elif defined(__APPLE__)
#define SHARED_EXT "dylib"
#else
#define SHARED_EXT "so"
#endif
typedef void(*init_ptr_t)(Lua *);
#if defined(_WIN32)
#include <windows.h>
#include "MemoryModule.h"
void LuaLoadPlugin(const String & _fname, Lua * L) throw (GeneralException) {
HMODULE handle;
String fname = _fname + "." SHARED_EXT;
Base::printm(M_INFO, "Loading library " + fname + "\n");
if (!(handle = LoadLibraryEx(fname.to_charp(), NULL, LOAD_WITH_ALTERED_SEARCH_PATH)) &&
!(handle = LoadLibraryEx(fname.to_charp(), NULL, NULL))) {
LuaLoadPlugin(&Input(fname), L);
return;
}
init_ptr_t init_ptr = (init_ptr_t) GetProcAddress(handle, "init_plugin");
if (!init_ptr) {
FreeLibrary(handle);
throw GeneralException("No init pointer on plugin " + fname);
}
Base::printm(M_INFO, "Library loaded, init ptr = %p\n", init_ptr);
init_ptr(L);
}
void LuaLoadPlugin(Handle * h, Lua * L) throw (GeneralException) {
Byte * buffer;
buffer = (Byte *) malloc(h->GetSize());
h->read(buffer, h->GetSize());
HMEMORYMODULE module;
if (!(module = MemoryLoadLibrary(buffer)))
throw("Can't load library " + h->GetName() + " from memory.");
init_ptr_t init_ptr = (init_ptr_t) MemoryGetProcAddress(module, "init_plugin");
if (!init_ptr) {
MemoryFreeLibrary(module);
throw GeneralException("No init pointer on plugin " + h->GetName());
}
Base::printm(M_INFO, "Library loaded, init ptr = %p\n", init_ptr);
init_ptr(L);
free(buffer);
}
#else
#include <dlfcn.h>
void LuaLoadPlugin(const String & fname, Lua * L) throw (GeneralException) {
String full_fname = "./" + fname + "." SHARED_EXT;
void * handle = dlopen(full_fname.to_charp(), RTLD_NOW | RTLD_GLOBAL);
Base::printm(M_INFO, "Loading library " + fname + "\n");
if (!handle) {
LuaLoadPlugin(&Input(fname + "." SHARED_EXT), L);
return;
}
init_ptr_t init_ptr = (init_ptr_t) dlsym(handle, "init_plugin");
if (!init_ptr) {
dlclose(handle);
throw GeneralException("No init pointer on plugin " + fname);
}
Base::printm(M_INFO, "Library loaded, init ptr = %p\n", init_ptr);
init_ptr(L);
}
#if defined(__APPLE__) and 0
// This actually requires bundles, and not dylibs... disabling it for now.
#include <mach/vm_map.h>
#include <mach-o/dyld.h>
#include <mach/mach_init.h>
void LuaLoadPlugin(Handle * h, Lua * L) throw (GeneralException) {
Byte * buffer;
NSObjectFileImage image;
if (vm_allocate(mach_task_self(), (vm_address_t *) &buffer, h->GetSize(), VM_FLAGS_ANYWHERE) != KERN_SUCCESS) {
throw GeneralException("Can't allocate kernel memory to load library " + h->GetName());
}
h->read(buffer, h->GetSize());
if (NSCreateObjectFileImageFromMemory(buffer, h->GetSize(), &image) != NSObjectFileImageSuccess) {
vm_deallocate(mach_task_self(), (vm_address_t) buffer, h->GetSize());
throw GeneralException("Can't load library " + h->GetName() + " from memory.");
}
NSModule module;
int o = 0;
if (h->GetName()[0] == '@') o = 1;
if (!(module = NSLinkModule(image, h->GetName().to_charp() + o, NSLINKMODULE_OPTION_PRIVATE))) {
NSDestroyObjectFileImage(image);
throw GeneralException("Can't link library " + h->GetName() + " from memory.");
}
NSSymbol symbol = NSLookupSymbolInModule(module, "init_plugin");
init_ptr_t init_ptr = (init_ptr_t) NSAddressOfSymbol(symbol);
if (!init_ptr) {
NSDestroyObjectFileImage(image);
throw GeneralException("No init pointer on plugin " + h->GetName());
}
Base::printm(M_INFO, "Library loaded, init ptr = %p\n", init_ptr);
init_ptr(L);
}
#else
#include <unistd.h>
// I don't know of any good way of doing this under linux except this one... *shrug*
void LuaLoadPlugin(Handle * h, Lua * L) throw (GeneralException) {
char ftemplate[] = "/tmp/luaplugin.so.XXXXXX";
int hdl;
if ((hdl = mkstemp(ftemplate)) == -1)
throw GeneralException("Can't create temporary file to load plugin " + h->GetName());
Byte * buffer;
buffer = (Byte *) malloc(h->GetSize());
h->read(buffer, h->GetSize());
if (write(hdl, buffer, h->GetSize()) != h->GetSize()) {
free(buffer);
close(hdl);
unlink(ftemplate);
throw GeneralException("Couldn't write to temporary file.");
}
free(buffer);
void * handle = dlopen(ftemplate, RTLD_NOW | RTLD_GLOBAL);
unlink(ftemplate);
close(hdl);
Base::printm(M_INFO, "Loading library " + h->GetName() + "\n");
if (!handle)
throw("Can't load library " + h->GetName() + " from memory.");
init_ptr_t init_ptr = (init_ptr_t) dlsym(handle, "init_plugin");
if (!init_ptr) {
dlclose(handle);
throw GeneralException("No init pointer on plugin " + h->GetName());
}
Base::printm(M_INFO, "Library loaded, init ptr = %p\n", init_ptr);
init_ptr(L);
}
#endif
#endif
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