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| -rw-r--r-- | cppuhelper/source/shlib.cxx | 423 |
1 files changed, 423 insertions, 0 deletions
diff --git a/cppuhelper/source/shlib.cxx b/cppuhelper/source/shlib.cxx new file mode 100644 index 000000000..89ce8b855 --- /dev/null +++ b/cppuhelper/source/shlib.cxx @@ -0,0 +1,423 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include <sal/config.h> + +#include <cassert> +#include <cstdlib> + +#include <com/sun/star/loader/CannotActivateFactoryException.hpp> +#include <com/sun/star/registry/CannotRegisterImplementationException.hpp> +#include <com/sun/star/registry/XRegistryKey.hpp> +#include <cppuhelper/factory.hxx> +#include <cppuhelper/shlib.hxx> +#include <osl/module.hxx> +#include <sal/log.hxx> +#include <uno/environment.hxx> +#include <uno/mapping.hxx> + +#include "loadsharedlibcomponentfactory.hxx" + +#if defined DISABLE_DYNLOADING +#include <osl/detail/component-mapping.h> +#endif + +css::uno::Environment cppuhelper::detail::getEnvironment( + OUString const & name, OUString const & implementation) +{ + OUString n(name); + if (!implementation.isEmpty()) { + static char const * log = std::getenv("UNO_ENV_LOG"); + if (log != nullptr && *log != 0) { + OString imps(log); + for (sal_Int32 i = 0; i != -1;) { + OString imp(imps.getToken(0, ';', i)); + //TODO: this assumes UNO_ENV_LOG only contains ASCII characters: + if (implementation.equalsAsciiL(imp.getStr(), imp.getLength())) + { + n += ":log"; + break; + } + } + } + } + return css::uno::Environment(n); +} + +namespace { + +#if !defined DISABLE_DYNLOADING + +css::uno::Environment getEnvironmentFromModule( + osl::Module const & module, css::uno::Environment const & target, + OUString const & implementation, OUString const & prefix) +{ + char const * name = nullptr; + css::uno::Environment env; + OUString fullPrefix(prefix); + if (!fullPrefix.isEmpty()) { + fullPrefix += "_"; + } + component_getImplementationEnvironmentExtFunc fp1 + = reinterpret_cast<component_getImplementationEnvironmentExtFunc>( + module.getFunctionSymbol(fullPrefix + COMPONENT_GETENVEXT)); + if (fp1 != nullptr) { + (*fp1)( + &name, reinterpret_cast<uno_Environment **>(&env), + (OUStringToOString(implementation, RTL_TEXTENCODING_ASCII_US) + .getStr()), + target.get()); + } else { + component_getImplementationEnvironmentFunc fp2 + = reinterpret_cast<component_getImplementationEnvironmentFunc>( + module.getFunctionSymbol(fullPrefix + COMPONENT_GETENV)); + if (fp2 != nullptr) { + (*fp2)(&name, reinterpret_cast<uno_Environment **>(&env)); + } else { + name = CPPU_CURRENT_LANGUAGE_BINDING_NAME; //TODO: fail + } + } + if (!env.is() && name != nullptr) { + env = cppuhelper::detail::getEnvironment( + OUString::createFromAscii(name), implementation); + } + return env; +} + +#endif + +extern "C" void getFactory(va_list * args) { + component_getFactoryFunc fn = va_arg(*args, component_getFactoryFunc); + OString const * implementation = va_arg(*args, OString const *); + void * smgr = va_arg(*args, void *); + void ** factory = va_arg(*args, void **); + *factory = (*fn)(implementation->getStr(), smgr, nullptr); +} + +css::uno::Reference<css::uno::XInterface> invokeComponentFactory( + css::uno::Environment const & source, css::uno::Environment const & target, + component_getFactoryFunc function, OUString const & uri, + OUString const & implementation, + css::uno::Reference<css::lang::XMultiServiceFactory> const & serviceManager) +{ + if (!(source.is() && target.is())) { + throw css::loader::CannotActivateFactoryException( + "cannot get environments", + css::uno::Reference<css::uno::XInterface>()); + } + OString impl( + OUStringToOString(implementation, RTL_TEXTENCODING_ASCII_US)); + if (source.get() == target.get()) { + return css::uno::Reference<css::uno::XInterface>( + static_cast<css::uno::XInterface *>( + (*function)(impl.getStr(), serviceManager.get(), nullptr)), + SAL_NO_ACQUIRE); + } + css::uno::Mapping mapTo(source, target); + css::uno::Mapping mapFrom(target, source); + if (!(mapTo.is() && mapFrom.is())) { + throw css::loader::CannotActivateFactoryException( + "cannot get mappings", + css::uno::Reference<css::uno::XInterface>()); + } + void * smgr = mapTo.mapInterface( + serviceManager.get(), + cppu::UnoType<css::lang::XMultiServiceFactory>::get()); + void * factory = nullptr; + target.invoke(getFactory, function, &impl, smgr, &factory); + if (smgr != nullptr) { + (*target.get()->pExtEnv->releaseInterface)( + target.get()->pExtEnv, smgr); + } + if (factory == nullptr) { + throw css::loader::CannotActivateFactoryException( + ("calling factory function for \"" + implementation + "\" in <" + + uri + "> returned null"), + css::uno::Reference<css::uno::XInterface>()); + } + css::uno::Reference<css::uno::XInterface> res; + mapFrom.mapInterface( + reinterpret_cast<void **>(&res), factory, + cppu::UnoType<css::uno::XInterface>::get()); + (*target.get()->pExtEnv->releaseInterface)( + target.get()->pExtEnv, factory); + return res; +} + +#if !defined DISABLE_DYNLOADING + +extern "C" void getInstance(va_list * args) { + cppuhelper::ImplementationConstructorFn * fn = va_arg(*args, cppuhelper::ImplementationConstructorFn *); + void * ctxt = va_arg(*args, void *); + assert(ctxt); + void * argseq = va_arg(*args, void *); + assert(argseq); + void ** instance = va_arg(*args, void **); + assert(instance); + assert(*instance == nullptr); + *instance = (*fn)(static_cast<css::uno::XComponentContext*>(ctxt), + *static_cast<css::uno::Sequence<css::uno::Any> const*>(argseq)); +} + +cppuhelper::WrapperConstructorFn mapConstructorFn( + css::uno::Environment const & source, css::uno::Environment const & target, + cppuhelper::ImplementationConstructorFn *const constructorFunction) +{ + if (!(source.is() && target.is())) { + throw css::loader::CannotActivateFactoryException( + "cannot get environments", + css::uno::Reference<css::uno::XInterface>()); + } + if (source.get() == target.get()) { + return cppuhelper::WrapperConstructorFn(constructorFunction); + } + // note: it should be valid to capture these mappings because they are + // ref-counted, and the returned closure will always be invoked in the + // "source" environment + css::uno::Mapping mapTo(source, target); + css::uno::Mapping mapFrom(target, source); + if (!(mapTo.is() && mapFrom.is())) { + throw css::loader::CannotActivateFactoryException( + "cannot get mappings", + css::uno::Reference<css::uno::XInterface>()); + } + return [mapFrom, mapTo, target, constructorFunction] + (css::uno::XComponentContext *const context, css::uno::Sequence<css::uno::Any> const& args) + { + void *const ctxt = mapTo.mapInterface( + context, + cppu::UnoType<css::uno::XComponentContext>::get()); + if (args.hasElements()) { + std::abort(); // TODO map args + } + void * instance = nullptr; + target.invoke(getInstance, constructorFunction, ctxt, &args, &instance); + if (ctxt != nullptr) { + (*target.get()->pExtEnv->releaseInterface)( + target.get()->pExtEnv, ctxt); + } + css::uno::XInterface * res = nullptr; + if (instance == nullptr) { + return res; + } + mapFrom.mapInterface( + reinterpret_cast<void **>(&res), instance, + cppu::UnoType<css::uno::XInterface>::get()); + (*target.get()->pExtEnv->releaseInterface)( + target.get()->pExtEnv, instance); + return res; + }; +} + +#endif + +} + +void cppuhelper::detail::loadSharedLibComponentFactory( + OUString const & uri, OUString const & environment, + OUString const & prefix, OUString const & implementation, + OUString const & constructor, + css::uno::Reference<css::lang::XMultiServiceFactory> const & serviceManager, + WrapperConstructorFn * constructorFunction, + css::uno::Reference<css::uno::XInterface> * factory) +{ + assert(constructor.isEmpty() || !environment.isEmpty()); + assert( + (constructorFunction == nullptr && constructor.isEmpty()) + || !*constructorFunction); + assert(factory != nullptr && !factory->is()); +#if defined DISABLE_DYNLOADING + assert(!environment.isEmpty()); + if (constructor.isEmpty()) { + css::uno::Environment curEnv(css::uno::Environment::getCurrent()); + css::uno::Environment env(getEnvironment(environment, implementation)); + if (!(curEnv.is() && env.is())) { + throw css::loader::CannotActivateFactoryException( + "cannot get environments", + css::uno::Reference<css::uno::XInterface>()); + } + if (curEnv.get() != env.get()) { + std::abort();//TODO + } + SAL_INFO("cppuhelper.shlib", "prefix=" << prefix << " implementation=" << implementation << " uri=" << uri); + lib_to_factory_mapping const * map = lo_get_factory_map(); + component_getFactoryFunc fp = 0; + for (int i = 0; map[i].name != 0; ++i) { + if (uri.equalsAscii(map[i].name)) { + fp = map[i].component_getFactory_function; + break; + } + } + if (fp == 0) { + SAL_WARN("cppuhelper", "unknown factory name \"" << uri << "\""); + throw css::loader::CannotActivateFactoryException( + "unknown factory name \"" + uri + "\"", + css::uno::Reference<css::uno::XInterface>()); + } + *factory = invokeComponentFactory( + css::uno::Environment::getCurrent(), + getEnvironment(environment, implementation), fp, uri, + implementation, serviceManager); + } else { + SAL_INFO("cppuhelper.shlib", "constructor=" << constructor); + lib_to_constructor_mapping const * map = lo_get_constructor_map(); + for (int i = 0; map[i].name != 0; ++i) { + if (constructor.equalsAscii(map[i].name)) { + *constructorFunction + = reinterpret_cast<ImplementationConstructorFn *>( + map[i].constructor_function); + return; + } + } + SAL_WARN("cppuhelper", "unknown constructor name \"" << constructor << "\""); + throw css::loader::CannotActivateFactoryException( + "unknown constructor name \"" + constructor + "\"", + css::uno::Reference<css::uno::XInterface>()); + } +#else + osl::Module mod(uri, SAL_LOADMODULE_LAZY | SAL_LOADMODULE_GLOBAL); + if (!mod.is()) { + throw css::loader::CannotActivateFactoryException( + "loading component library <" + uri + "> failed", + css::uno::Reference<css::uno::XInterface>()); + } + if (constructor.isEmpty()) { + OUString sym; + SAL_INFO("cppuhelper.shlib", "prefix=" << prefix << " implementation=" << implementation << " uri=" << uri); + if (!prefix.isEmpty()) { + sym = prefix + "_" COMPONENT_GETFACTORY; + } else { + sym = COMPONENT_GETFACTORY; + } + oslGenericFunction fp = mod.getFunctionSymbol(sym); + if (fp == nullptr) { + throw css::loader::CannotActivateFactoryException( + ("no factory symbol \"" + sym + "\" in component library <" + + uri + ">"), + css::uno::Reference<css::uno::XInterface>()); + } + css::uno::Environment curEnv(css::uno::Environment::getCurrent()); + *factory = invokeComponentFactory( + curEnv, + (environment.isEmpty() + ? getEnvironmentFromModule(mod, curEnv, implementation, prefix) + : getEnvironment(environment, implementation)), + reinterpret_cast<component_getFactoryFunc>(fp), uri, implementation, + serviceManager); + } else { + SAL_INFO("cppuhelper.shlib", "constructor=" << constructor); + oslGenericFunction fp = mod.getFunctionSymbol(constructor); + if (fp == nullptr) { + throw css::loader::CannotActivateFactoryException( + ("no constructor symbol \"" + constructor + + "\" in component library <" + uri + ">"), + css::uno::Reference<css::uno::XInterface>()); + } + css::uno::Environment curEnv(css::uno::Environment::getCurrent()); + *constructorFunction = mapConstructorFn( + curEnv, + (environment.isEmpty() + ? getEnvironmentFromModule(mod, curEnv, implementation, prefix) + : getEnvironment(environment, implementation)), + reinterpret_cast<ImplementationConstructorFn *>(fp)); + } + mod.release(); +#endif +} + +css::uno::Reference<css::uno::XInterface> cppu::loadSharedLibComponentFactory( + OUString const & uri, OUString const & rPath, + OUString const & rImplName, + css::uno::Reference<css::lang::XMultiServiceFactory> const & xMgr, + css::uno::Reference<css::registry::XRegistryKey> const & xKey) +{ + assert(rPath.isEmpty()); (void) rPath; + assert(!xKey.is()); (void) xKey; + css::uno::Reference<css::uno::XInterface> fac; + cppuhelper::detail::loadSharedLibComponentFactory( + uri, "", "", rImplName, "", xMgr, nullptr, &fac); + return fac; +} + +#if !defined DISABLE_DYNLOADING + +namespace { + +extern "C" void writeInfo(va_list * args) { + component_writeInfoFunc fn = va_arg(*args, component_writeInfoFunc); + void * smgr = va_arg(*args, void *); + void * key = va_arg(*args, void *); + sal_Bool * ok = va_arg(*args, sal_Bool *); + *ok = (*fn)(smgr, key); +} + +} + +void cppu::writeSharedLibComponentInfo( + OUString const & uri, OUString const & rPath, + css::uno::Reference<css::lang::XMultiServiceFactory> const & xMgr, + css::uno::Reference<css::registry::XRegistryKey> const & xKey) +{ + assert(rPath.isEmpty()); (void) rPath; + osl::Module mod(uri, SAL_LOADMODULE_LAZY | SAL_LOADMODULE_GLOBAL); + if (!mod.is()) { + throw css::registry::CannotRegisterImplementationException( + "loading component library <" + uri + "> failed", + css::uno::Reference<css::uno::XInterface>()); + } + oslGenericFunction fp = mod.getFunctionSymbol(COMPONENT_WRITEINFO); + if (fp == nullptr) { + throw css::registry::CannotRegisterImplementationException( + ("no symbol \"" COMPONENT_WRITEINFO "\" in component library <" + + uri + ">"), + css::uno::Reference<css::uno::XInterface>()); + } + css::uno::Environment curEnv(css::uno::Environment::getCurrent()); + css::uno::Environment env(getEnvironmentFromModule(mod, curEnv, "", "")); + if (!(curEnv.is() && env.is())) { + throw css::registry::CannotRegisterImplementationException( + "cannot get environments", + css::uno::Reference<css::uno::XInterface>()); + } + css::uno::Mapping map(curEnv, env); + if (!map.is()) { + throw css::registry::CannotRegisterImplementationException( + "cannot get mapping", css::uno::Reference<css::uno::XInterface>()); + } + void * smgr = map.mapInterface( + xMgr.get(), cppu::UnoType<css::lang::XMultiServiceFactory>::get()); + void * key = map.mapInterface( + xKey.get(), cppu::UnoType<css::registry::XRegistryKey>::get()); + sal_Bool ok; + env.invoke(writeInfo, fp, smgr, key, &ok); + (*env.get()->pExtEnv->releaseInterface)(env.get()->pExtEnv, key); + if (smgr != nullptr) { + (*env.get()->pExtEnv->releaseInterface)(env.get()->pExtEnv, smgr); + } + if (!ok) { + throw css::registry::CannotRegisterImplementationException( + ("calling \"" COMPONENT_WRITEINFO "\" in component library <" + uri + + "> returned false"), + css::uno::Reference<css::uno::XInterface>()); + } +} + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |