diff options
Diffstat (limited to 'opentrack/plugin-support.cpp')
| -rw-r--r-- | opentrack/plugin-support.cpp | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/opentrack/plugin-support.cpp b/opentrack/plugin-support.cpp new file mode 100644 index 00000000..694f3e19 --- /dev/null +++ b/opentrack/plugin-support.cpp @@ -0,0 +1,215 @@ +#include <cstdio> +#include <cinttypes> +#include "plugin-support.h" +#include <QCoreApplication> +#include <QFile> +#include <QDir> + +#ifndef _WIN32 +# include <dlfcn.h> +#endif + +SelectedLibraries::~SelectedLibraries() +{ +} + +template<typename t> +static ptr<t> make_instance(ptr<dylib> lib) +{ + ptr<t> ret = nullptr; + if (lib && lib->Constructor) + ret = ptr<t>(reinterpret_cast<t*>(reinterpret_cast<CTOR_FUNPTR>(lib->Constructor)())); + qDebug() << "lib" << (lib ? lib->filename : "<null>") << "ptr" << (intptr_t)ret.get(); + return ret; +} + +SelectedLibraries::SelectedLibraries(QFrame* frame, dylibtr t, dylibtr p, dylibtr f) : + pTracker(nullptr), + pFilter(nullptr), + pProtocol(nullptr), + correct(false) +{ + pTracker = make_instance<ITracker>(t); + pProtocol = make_instance<IProtocol>(p); + pFilter = make_instance<IFilter>(f); + + if (!pTracker|| !pProtocol) + { + qDebug() << "load failure tracker" << (intptr_t)pTracker.get() << "protocol" << (intptr_t)pProtocol.get(); + return; + } + + if (pProtocol) + if(!pProtocol->correct()) + { + qDebug() << "protocol load failure"; + return; + } + + pTracker->start_tracker(frame); + + correct = true; +} + +#if defined(__APPLE__) +# define SONAME "dylib" +#elif defined(_WIN32) +# define SONAME "dll" +#else +# define SONAME "so" +#endif + +#include <iostream> + +#ifdef _MSC_VER +# error "No support for MSVC anymore" +#else +# define LIB_PREFIX "lib" +#endif + +static bool get_metadata(ptr<dylib> lib, QString& name, QIcon& icon) +{ + Metadata* meta; + if (!lib->Meta || ((meta = lib->Meta()), !meta)) + return false; + name = meta->name(); + icon = meta->icon(); + delete meta; + return true; +} + +QList<ptr<dylib>> dylib::enum_libraries() +{ +#define BASE "opentrack-" +#define SUFF "-*.*" + const char* filters_n[] = { BASE "filter" SUFF, + BASE "tracker" SUFF, + BASE "proto" SUFF }; + const Type filters_t[] = { Filter, Tracker, Protocol }; + + QDir settingsDir( QCoreApplication::applicationDirPath() ); + + QList<ptr<dylib>> ret; + + for (int i = 0; i < 3; i++) + { + QString filter = filters_n[i]; + auto t = filters_t[i]; + QStringList filenames = settingsDir.entryList(QStringList { LIB_PREFIX + filter + SONAME }, + QDir::Files, + QDir::Name); + for ( int i = 0; i < filenames.size(); i++) { + QIcon icon; + QString longName; + QString str = filenames.at(i); + auto lib = std::make_shared<dylib>(str, t); + qDebug() << "Loading" << str; + std::cout.flush(); + if (!get_metadata(lib, longName, icon)) + continue; + ret.push_back(lib); + } + } + + return ret; +} + +dylib::dylib(const QString& filename, Type t) : + type(t), + Dialog(nullptr), + Constructor(nullptr), + Meta(nullptr) +{ + this->filename = filename; +#if defined(_WIN32) + QString fullPath = QCoreApplication::applicationDirPath() + "/" + this->filename; + handle = new QLibrary(fullPath); + + struct _foo { + static bool die(QLibrary*& l, bool failp) + { + if (failp) + { + qDebug() << "failed" << l->errorString(); + delete l; + l = nullptr; + } + return failp; + } + }; + + if (_foo::die(handle, !handle->load())) + return; + + Dialog = (CTOR_FUNPTR) handle->resolve("GetDialog"); + if (_foo::die(handle, !Dialog)) + return; + + Constructor = (CTOR_FUNPTR) handle->resolve("GetConstructor"); + if (_foo::die(handle, !Constructor)) + return; + + Meta = (METADATA_FUNPTR) handle->resolve("GetMetadata"); + if (_foo::die(handle, !Meta)) + return; +#else + QByteArray latin1 = QFile::encodeName(filename); + handle = dlopen(latin1.constData(), RTLD_NOW | +# ifdef __linux + RTLD_DEEPBIND +# elif defined(__APPLE__) + RTLD_LOCAL|RTLD_FIRST|RTLD_NOW +# else + 0 +# endif + ); + + struct _foo { + static bool err(void*& handle) + { + const char* err = dlerror(); + if (err) + { + fprintf(stderr, "Error, ignoring: %s\n", err); + fflush(stderr); + dlclose(handle); + handle = nullptr; + return true; + } + return false; + } + }; + + if (handle) + { + if (_foo::err(handle)) + return; + Dialog = (CTOR_FUNPTR) dlsym(handle, "GetDialog"); + if (_foo::err(handle)) + return; + Constructor = (CTOR_FUNPTR) dlsym(handle, "GetConstructor"); + if (_foo::err(handle)) + return; + Meta = (METADATA_FUNPTR) dlsym(handle, "GetMetadata"); + if (_foo::err(handle)) + return; + } else { + (void) _foo::err(handle); + } +#endif + + auto m = ptr<Metadata>(Meta()); + + icon = m->icon(); + name = m->name(); +} + +dylib::~dylib() +{ +#if defined(_WIN32) + handle->unload(); +#else + if (handle) + (void) dlclose(handle); +#endif +} |