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/*
* Copyright 2019 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 "buildjson.hpp"
#include "file_handler.hpp"
#include "fs.hpp"
#include "general_systemd.hpp"
#include <algorithm>
#include <cstdio>
#include <exception>
#include <fstream>
#include <nlohmann/json.hpp>
#include <phosphor-logging/log.hpp>
#include <regex>
#include <sdbusplus/bus.hpp>
#include <string>
#include <vector>
namespace ipmi_flash
{
std::unique_ptr<TriggerableActionInterface>
buildFileSystemd(const nlohmann::json& data)
{
/* This type of action requires a path and unit, and optionally a mode. */
const auto& path = data.at("path");
const auto& unit = data.at("unit");
/* the mode parameter is optional. */
std::string systemdMode = "replace";
const auto& mode = data.find("mode");
if (mode != data.end())
{
systemdMode = data.at("mode").get<std::string>();
}
return SystemdWithStatusFile::CreateSystemdWithStatusFile(
sdbusplus::bus::new_default(), path, unit, systemdMode);
}
std::unique_ptr<TriggerableActionInterface>
buildSystemd(const nlohmann::json& data)
{
/* This type of action requires a unit, and optionally a mode. */
const auto& unit = data.at("unit");
/* the mode parameter is optional. */
std::string systemdMode = "replace";
const auto& mode = data.find("mode");
if (mode != data.end())
{
systemdMode = data.at("mode").get<std::string>();
}
return SystemdNoFile::CreateSystemdNoFile(sdbusplus::bus::new_default(),
unit, systemdMode);
}
std::vector<HandlerConfig> buildHandlerFromJson(const nlohmann::json& data)
{
std::vector<HandlerConfig> handlers;
for (const auto& item : data)
{
try
{
HandlerConfig output;
/* at() throws an exception when the key is not present. */
item.at("blob").get_to(output.blobId);
/* name must be: /flash/... */
if (!std::regex_match(output.blobId, std::regex("^\\/flash\\/.+")))
{
throw std::runtime_error("Invalid blob name: '" +
output.blobId +
"' must start with /flash/");
}
/* handler is required. */
const auto& h = item.at("handler");
const std::string handlerType = h.at("type");
if (handlerType == "file")
{
const auto& path = h.at("path");
output.handler = std::make_unique<FileHandler>(path);
}
else
{
throw std::runtime_error("Invalid handler type: " +
handlerType);
}
/* actions are required (presently). */
const auto& a = item.at("actions");
std::unique_ptr<ActionPack> pack = std::make_unique<ActionPack>();
/* It hasn't been fully determined if any action being optional is
* useful, so for now they will be required.
* TODO: Evaluate how the behaviors change if some actions are
* missing, does the code just assume it was successful? I would
* think not.
*/
const auto& prep = a.at("preparation");
const std::string prepareType = prep.at("type");
if (prepareType == "systemd")
{
pack->preparation = std::move(buildSystemd(prep));
}
else
{
throw std::runtime_error("Invalid preparation type: " +
prepareType);
}
const auto& verify = a.at("verification");
const std::string verifyType = verify.at("type");
if (verifyType == "fileSystemdVerify")
{
pack->verification = std::move(buildFileSystemd(verify));
}
else
{
throw std::runtime_error("Invalid verification type:" +
verifyType);
}
const auto& update = a.at("update");
const std::string updateType = update.at("type");
if (updateType == "reboot")
{
pack->update = SystemdNoFile::CreateSystemdNoFile(
sdbusplus::bus::new_default(), "reboot.target",
"replace-irreversibly");
}
else if (updateType == "fileSystemdUpdate")
{
pack->update = std::move(buildFileSystemd(update));
}
else if (updateType == "systemd")
{
pack->update = std::move(buildSystemd(update));
}
else
{
throw std::runtime_error("Invalid update type: " + updateType);
}
output.actions = std::move(pack);
handlers.push_back(std::move(output));
}
catch (const std::exception& e)
{
/* TODO: Once phosphor-logging supports unit-test injection, fix
* this to log.
*/
std::fprintf(stderr,
"Excepted building HandlerConfig from json: %s\n",
e.what());
}
}
return handlers;
}
std::vector<HandlerConfig> BuildHandlerConfigs(const std::string& directory)
{
using namespace phosphor::logging;
std::vector<HandlerConfig> output;
std::vector<std::string> jsonPaths = GetJsonList(directory);
for (const auto& path : jsonPaths)
{
std::ifstream jsonFile(path);
if (!jsonFile.is_open())
{
log<level::ERR>("Unable to open json file",
entry("PATH=%s", path.c_str()));
continue;
}
auto data = nlohmann::json::parse(jsonFile, nullptr, false);
if (data.is_discarded())
{
log<level::ERR>("Parsing json failed",
entry("PATH=%s", path.c_str()));
continue;
}
std::vector<HandlerConfig> configs = buildHandlerFromJson(data);
std::move(configs.begin(), configs.end(), std::back_inserter(output));
}
return output;
}
} // namespace ipmi_flash
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