src/network_manager.cpp - openbmc/phosphor-networkd - Gitiles

 #include "config.h"

 #include "network_manager.hpp"

 #include "ipaddress.hpp"
 #include "network_config.hpp"
 #include "types.hpp"
 #include "util.hpp"

 #include <arpa/inet.h>
 #include <dirent.h>
 #include <net/if.h>

 #include <algorithm>
 #include <charconv>
 #include <filesystem>
 #include <fstream>
 #include <phosphor-logging/elog-errors.hpp>
 #include <phosphor-logging/log.hpp>
 #include <string>
 #include <xyz/openbmc_project/Common/error.hpp>

 constexpr char SYSTEMD_BUSNAME[] = "org.freedesktop.systemd1";
 constexpr char SYSTEMD_PATH[] = "/org/freedesktop/systemd1";
 constexpr char SYSTEMD_INTERFACE[] = "org.freedesktop.systemd1.Manager";
 constexpr auto FirstBootFile = "/var/lib/network/firstBoot_";

 constexpr char NETWORKD_BUSNAME[] = "org.freedesktop.network1";
 constexpr char NETWORKD_PATH[] = "/org/freedesktop/network1";
 constexpr char NETWORKD_INTERFACE[] = "org.freedesktop.network1.Manager";

 namespace phosphor
 {
 namespace network
 {

 extern std::unique_ptr<Timer> refreshObjectTimer;
 extern std::unique_ptr<Timer> reloadTimer;
 using namespace phosphor::logging;
 using namespace sdbusplus::xyz::openbmc_project::Common::Error;
 using Argument = xyz::openbmc_project::Common::InvalidArgument;

 Manager::Manager(sdbusplus::bus_t& bus, const char* objPath,
                  const fs::path& confDir) :
     details::VLANCreateIface(bus, objPath,
                              details::VLANCreateIface::action::defer_emit),
     bus(bus), objectPath(objPath)
 {
     setConfDir(confDir);
 }

 bool Manager::createDefaultNetworkFiles()
 {
     auto isCreated = false;
     try
     {
         auto interfaceStrList = getSystemInterfaces();
         for (const auto& interface : interfaceStrList)
         {
             // if the interface has '.' in the name, it means that this is a
             // VLAN - don't create the network file.
             if (interface.find(".") != std::string::npos)
             {
                 continue;
             }

             fs::path filePath = config::pathForIntfConf(confDir, interface);

             // create the interface specific network file
             // if not existing.
             if (!fs::is_regular_file(filePath))
             {
                 bmc::writeDHCPDefault(filePath, interface);
                 log<level::INFO>("Created the default network file.",
                                  entry("INTERFACE=%s", interface.c_str()));
                 isCreated = true;
             }
         }
     }
     catch (const std::exception& e)
     {
         log<level::ERR>("Unable to create the default network file");
     }

     return isCreated;
 }

 void Manager::setConfDir(const fs::path& dir)
 {
     confDir = dir;

     if (!fs::exists(confDir))
     {
         if (!fs::create_directories(confDir))
         {
             log<level::ERR>("Unable to create the network conf dir",
                             entry("DIR=%s", confDir.c_str()));
             elog<InternalFailure>();
         }
     }
 }

 void Manager::createInterfaces()
 {
     // clear all the interfaces first
     interfaces.clear();

     auto interfaceStrList = getSystemInterfaces();

     for (auto& interface : interfaceStrList)
     {
         fs::path objPath = objectPath;
         auto index = interface.find(".");

         // interface can be of vlan type or normal ethernet interface.
         // vlan interface looks like "interface.vlanid",so here by looking
         // at the interface name we decide that we need
         // to create the vlaninterface or normal physical interface.
         if (index != std::string::npos)
         {
             // it is vlan interface
             auto sv = std::string_view(interface);
             auto interfaceName = sv.substr(0, index);
             auto vlanStr = sv.substr(index + 1);
             uint16_t vlanId;
             auto res = std::from_chars(vlanStr.begin(), vlanStr.end(), vlanId);
             if (res.ec != std::errc() || res.ptr != vlanStr.end())
             {
                 auto msg = fmt::format("Invalid VLAN: {}", vlanStr);
                 log<level::ERR>(msg.c_str());
                 continue;
             }
             auto it = interfaces.find(interfaceName);
             if (it == interfaces.end())
             {
                 auto msg = fmt::format("Missing interface({}) for VLAN({}): {}",
                                        interfaceName, vlanId, interface);
                 log<level::ERR>(msg.c_str());
                 continue;
             }
             it->second->loadVLAN(vlanId);
             continue;
         }
         // normal ethernet interface
         objPath /= interface;
         config::Parser config(config::pathForIntfConf(confDir, interface));

         auto intf = std::make_unique<phosphor::network::EthernetInterface>(
             bus, objPath.string(), config, *this);

         intf->createIPAddressObjects();
         intf->createStaticNeighborObjects();
         intf->loadNameServers(config);

         this->interfaces.emplace(std::move(interface), std::move(intf));
     }
 }

 void Manager::createChildObjects()
 {
     routeTable.refresh();

     // creates the ethernet interface dbus object.
     createInterfaces();

     systemConf.reset(nullptr);
     dhcpConf.reset(nullptr);

     fs::path objPath = objectPath;
     objPath /= "config";

     // create the system conf object.
     systemConf = std::make_unique<phosphor::network::SystemConfiguration>(
         bus, objPath.string());
     // create the dhcp conf object.
     objPath /= "dhcp";
     dhcpConf = std::make_unique<phosphor::network::dhcp::Configuration>(
         bus, objPath.string(), *this);
 }

 ObjectPath Manager::vlan(std::string interfaceName, uint32_t id)
 {
     if (id == 0 || id >= 4095)
     {
         log<level::ERR>("VLAN ID is not valid", entry("VLANID=%u", id));
         elog<InvalidArgument>(
             Argument::ARGUMENT_NAME("VLANId"),
             Argument::ARGUMENT_VALUE(std::to_string(id).c_str()));
     }

     auto it = interfaces.find(interfaceName);
     if (it == interfaces.end())
     {
         using ResourceErr =
             phosphor::logging::xyz::openbmc_project::Common::ResourceNotFound;
         elog<ResourceNotFound>(ResourceErr::RESOURCE(interfaceName.c_str()));
     }
     return it->second->createVLAN(id);
 }

 void Manager::reset()
 {
     if (fs::is_directory(confDir))
     {
         for (const auto& file : fs::directory_iterator(confDir))
         {
             fs::remove(file.path());
         }
     }
     createDefaultNetworkFiles();
     log<level::INFO>("Network Factory Reset queued.");
 }

 // Need to merge the below function with the code which writes the
 // config file during factory reset.
 // TODO openbmc/openbmc#1751
 void Manager::writeToConfigurationFile()
 {
     // write all the static ip address in the systemd-network conf file
     for (const auto& intf : interfaces)
     {
         intf.second->writeConfigurationFile();
     }
 }

 #ifdef SYNC_MAC_FROM_INVENTORY
 void Manager::setFistBootMACOnInterface(
     const std::pair<std::string, std::string>& inventoryEthPair)
 {
     for (const auto& interface : interfaces)
     {
         if (interface.first == inventoryEthPair.first)
         {
             auto returnMAC =
                 interface.second->macAddress(inventoryEthPair.second);
             if (returnMAC == inventoryEthPair.second)
             {
                 log<level::INFO>("Set the MAC on "),
                     entry("interface : ", interface.first.c_str()),
                     entry("MAC : ", inventoryEthPair.second.c_str());
                 std::error_code ec;
                 if (std::filesystem::is_directory("/var/lib/network", ec))
                 {
                     std::ofstream persistentFile(FirstBootFile +
                                                  interface.first);
                 }
                 break;
             }
             else
             {
                 log<level::INFO>("MAC is Not Set on ethernet Interface");
             }
         }
     }
 }

 #endif

 void Manager::reloadConfigs()
 {
     reloadTimer->restartOnce(reloadTimeout);
     // Ensure that the next refresh happens after reconfiguration
     refreshObjectTimer->setRemaining(reloadTimeout + refreshTimeout);
 }

 void Manager::doReloadConfigs()
 {
     for (auto& hook : reloadPreHooks)
     {
         try
         {
             hook();
         }
         catch (const std::exception& ex)
         {
             log<level::ERR>("Failed executing reload hook, ignoring",
                             entry("ERR=%s", ex.what()));
         }
     }
     reloadPreHooks.clear();
     try
     {
         auto method = bus.new_method_call(NETWORKD_BUSNAME, NETWORKD_PATH,
                                           NETWORKD_INTERFACE, "Reload");
         bus.call_noreply(method);
     }
     catch (const sdbusplus::exception_t& ex)
     {
         log<level::ERR>("Failed to reload configuration",
                         entry("ERR=%s", ex.what()));
         elog<InternalFailure>();
     }
     // Ensure reconfiguration has enough time
     refreshObjectTimer->setRemaining(refreshTimeout);
 }

 } // namespace network
 } // namespace phosphor
	#include "config.h"

	#include "network_manager.hpp"

	#include "ipaddress.hpp"
	#include "network_config.hpp"
	#include "types.hpp"
	#include "util.hpp"

	#include <arpa/inet.h>
	#include <dirent.h>
	#include <net/if.h>

	#include <algorithm>
	#include <charconv>
	#include <filesystem>
	#include <fstream>
	#include <phosphor-logging/elog-errors.hpp>
	#include <phosphor-logging/log.hpp>
	#include <string>
	#include <xyz/openbmc_project/Common/error.hpp>

	constexpr char SYSTEMD_BUSNAME[] = "org.freedesktop.systemd1";
	constexpr char SYSTEMD_PATH[] = "/org/freedesktop/systemd1";
	constexpr char SYSTEMD_INTERFACE[] = "org.freedesktop.systemd1.Manager";
	constexpr auto FirstBootFile = "/var/lib/network/firstBoot_";

	constexpr char NETWORKD_BUSNAME[] = "org.freedesktop.network1";
	constexpr char NETWORKD_PATH[] = "/org/freedesktop/network1";
	constexpr char NETWORKD_INTERFACE[] = "org.freedesktop.network1.Manager";

	namespace phosphor
	{
	namespace network
	{

	extern std::unique_ptr<Timer> refreshObjectTimer;
	extern std::unique_ptr<Timer> reloadTimer;
	using namespace phosphor::logging;
	using namespace sdbusplus::xyz::openbmc_project::Common::Error;
	using Argument = xyz::openbmc_project::Common::InvalidArgument;

	Manager::Manager(sdbusplus::bus_t& bus, const char* objPath,
	const fs::path& confDir) :
	details::VLANCreateIface(bus, objPath,
	details::VLANCreateIface::action::defer_emit),
	bus(bus), objectPath(objPath)
	{
	setConfDir(confDir);
	}

	bool Manager::createDefaultNetworkFiles()
	{
	auto isCreated = false;
	try
	{
	auto interfaceStrList = getSystemInterfaces();
	for (const auto& interface : interfaceStrList)
	{
	// if the interface has '.' in the name, it means that this is a
	// VLAN - don't create the network file.
	if (interface.find(".") != std::string::npos)
	{
	continue;
	}

	fs::path filePath = config::pathForIntfConf(confDir, interface);

	// create the interface specific network file
	// if not existing.
	if (!fs::is_regular_file(filePath))
	{
	bmc::writeDHCPDefault(filePath, interface);
	log<level::INFO>("Created the default network file.",
	entry("INTERFACE=%s", interface.c_str()));
	isCreated = true;
	}
	}
	}
	catch (const std::exception& e)
	{
	log<level::ERR>("Unable to create the default network file");
	}

	return isCreated;
	}

	void Manager::setConfDir(const fs::path& dir)
	{
	confDir = dir;

	if (!fs::exists(confDir))
	{
	if (!fs::create_directories(confDir))
	{
	log<level::ERR>("Unable to create the network conf dir",
	entry("DIR=%s", confDir.c_str()));
	elog<InternalFailure>();
	}
	}
	}

	void Manager::createInterfaces()
	{
	// clear all the interfaces first
	interfaces.clear();

	auto interfaceStrList = getSystemInterfaces();

	for (auto& interface : interfaceStrList)
	{
	fs::path objPath = objectPath;
	auto index = interface.find(".");

	// interface can be of vlan type or normal ethernet interface.
	// vlan interface looks like "interface.vlanid",so here by looking
	// at the interface name we decide that we need
	// to create the vlaninterface or normal physical interface.
	if (index != std::string::npos)
	{
	// it is vlan interface
	auto sv = std::string_view(interface);
	auto interfaceName = sv.substr(0, index);
	auto vlanStr = sv.substr(index + 1);
	uint16_t vlanId;
	auto res = std::from_chars(vlanStr.begin(), vlanStr.end(), vlanId);
	if (res.ec != std::errc() \|\| res.ptr != vlanStr.end())
	{
	auto msg = fmt::format("Invalid VLAN: {}", vlanStr);
	log<level::ERR>(msg.c_str());
	continue;
	}
	auto it = interfaces.find(interfaceName);
	if (it == interfaces.end())
	{
	auto msg = fmt::format("Missing interface({}) for VLAN({}): {}",
	interfaceName, vlanId, interface);
	log<level::ERR>(msg.c_str());
	continue;
	}
	it->second->loadVLAN(vlanId);
	continue;
	}
	// normal ethernet interface
	objPath /= interface;
	config::Parser config(config::pathForIntfConf(confDir, interface));

	auto intf = std::make_unique<phosphor::network::EthernetInterface>(
	bus, objPath.string(), config, *this);

	intf->createIPAddressObjects();
	intf->createStaticNeighborObjects();
	intf->loadNameServers(config);

	this->interfaces.emplace(std::move(interface), std::move(intf));
	}
	}

	void Manager::createChildObjects()
	{
	routeTable.refresh();

	// creates the ethernet interface dbus object.
	createInterfaces();

	systemConf.reset(nullptr);
	dhcpConf.reset(nullptr);

	fs::path objPath = objectPath;
	objPath /= "config";

	// create the system conf object.
	systemConf = std::make_unique<phosphor::network::SystemConfiguration>(
	bus, objPath.string());
	// create the dhcp conf object.
	objPath /= "dhcp";
	dhcpConf = std::make_unique<phosphor::network::dhcp::Configuration>(
	bus, objPath.string(), *this);
	}

	ObjectPath Manager::vlan(std::string interfaceName, uint32_t id)
	{
	if (id == 0 \|\| id >= 4095)
	{
	log<level::ERR>("VLAN ID is not valid", entry("VLANID=%u", id));
	elog<InvalidArgument>(
	Argument::ARGUMENT_NAME("VLANId"),
	Argument::ARGUMENT_VALUE(std::to_string(id).c_str()));
	}

	auto it = interfaces.find(interfaceName);
	if (it == interfaces.end())
	{
	using ResourceErr =
	phosphor::logging::xyz::openbmc_project::Common::ResourceNotFound;
	elog<ResourceNotFound>(ResourceErr::RESOURCE(interfaceName.c_str()));
	}
	return it->second->createVLAN(id);
	}

	void Manager::reset()
	{
	if (fs::is_directory(confDir))
	{
	for (const auto& file : fs::directory_iterator(confDir))
	{
	fs::remove(file.path());
	}
	}
	createDefaultNetworkFiles();
	log<level::INFO>("Network Factory Reset queued.");
	}

	// Need to merge the below function with the code which writes the
	// config file during factory reset.
	// TODO openbmc/openbmc#1751
	void Manager::writeToConfigurationFile()
	{
	// write all the static ip address in the systemd-network conf file
	for (const auto& intf : interfaces)
	{
	intf.second->writeConfigurationFile();
	}
	}

	#ifdef SYNC_MAC_FROM_INVENTORY
	void Manager::setFistBootMACOnInterface(
	const std::pair<std::string, std::string>& inventoryEthPair)
	{
	for (const auto& interface : interfaces)
	{
	if (interface.first == inventoryEthPair.first)
	{
	auto returnMAC =
	interface.second->macAddress(inventoryEthPair.second);
	if (returnMAC == inventoryEthPair.second)
	{
	log<level::INFO>("Set the MAC on "),
	entry("interface : ", interface.first.c_str()),
	entry("MAC : ", inventoryEthPair.second.c_str());
	std::error_code ec;
	if (std::filesystem::is_directory("/var/lib/network", ec))
	{
	std::ofstream persistentFile(FirstBootFile +
	interface.first);
	}
	break;
	}
	else
	{
	log<level::INFO>("MAC is Not Set on ethernet Interface");
	}
	}
	}
	}

	#endif

	void Manager::reloadConfigs()
	{
	reloadTimer->restartOnce(reloadTimeout);
	// Ensure that the next refresh happens after reconfiguration
	refreshObjectTimer->setRemaining(reloadTimeout + refreshTimeout);
	}

	void Manager::doReloadConfigs()
	{
	for (auto& hook : reloadPreHooks)
	{
	try
	{
	hook();
	}
	catch (const std::exception& ex)
	{
	log<level::ERR>("Failed executing reload hook, ignoring",
	entry("ERR=%s", ex.what()));
	}
	}
	reloadPreHooks.clear();
	try
	{
	auto method = bus.new_method_call(NETWORKD_BUSNAME, NETWORKD_PATH,
	NETWORKD_INTERFACE, "Reload");
	bus.call_noreply(method);
	}
	catch (const sdbusplus::exception_t& ex)
	{
	log<level::ERR>("Failed to reload configuration",
	entry("ERR=%s", ex.what()));
	elog<InternalFailure>();
	}
	// Ensure reconfiguration has enough time
	refreshObjectTimer->setRemaining(refreshTimeout);
	}

	} // namespace network
	} // namespace phosphor