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/*
* Copyright 2018 Google Inc.
*
* Licensed 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
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "utils.hpp"
#include <dlfcn.h>
#include <blobs-ipmid/manager.hpp>
#include <experimental/filesystem>
#include <memory>
#include <phosphor-logging/log.hpp>
#include <regex>
namespace blobs
{
namespace fs = std::experimental::filesystem;
using namespace phosphor::logging;
using HandlerFactory = std::unique_ptr<GenericBlobInterface> (*)();
void loadLibraries(const std::string& path)
{
void* libHandle = NULL;
HandlerFactory factory;
auto* manager = getBlobManager();
for (const auto& p : fs::recursive_directory_iterator(path))
{
auto ps = p.path().string();
/* The bitbake recipe symlinks the library lib*.so.? into the folder
* only, and not the other names, .so, .so.?.?, .so.?.?.?
*
* Therefore only care if it's lib*.so.?
*/
if (!std::regex_match(ps, std::regex(".+\\.so\\.\\d+$")))
{
continue;
}
libHandle = dlopen(ps.c_str(), RTLD_NOW | RTLD_GLOBAL);
if (!libHandle)
{
log<level::ERR>("ERROR opening", entry("HANDLER=%s", ps.c_str()),
entry("ERROR=%s", dlerror()));
continue;
}
dlerror(); /* Clear any previous error. */
factory =
reinterpret_cast<HandlerFactory>(dlsym(libHandle, "createHandler"));
const char* error = dlerror();
if (error)
{
log<level::ERR>("ERROR loading symbol",
entry("HANDLER=%s", ps.c_str()),
entry("ERROR=%s", error));
continue;
}
std::unique_ptr<GenericBlobInterface> result = factory();
if (!result)
{
log<level::ERR>("Unable to create handler",
entry("HANDLER=%s", ps.c_str()));
continue;
}
manager->registerHandler(std::move(result));
}
}
} // namespace blobs
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