18b7c156eSVernon Mauery #include <ipmi-allowlist.hpp> 28b7c156eSVernon Mauery #include <ipmid/api.hpp> 38b7c156eSVernon Mauery #include <ipmid/utils.hpp> 48b7c156eSVernon Mauery #include <phosphor-logging/elog-errors.hpp> 58b7c156eSVernon Mauery #include <phosphor-logging/log.hpp> 68b7c156eSVernon Mauery #include <xyz/openbmc_project/Control/Security/RestrictionMode/server.hpp> 78b7c156eSVernon Mauery 88b7c156eSVernon Mauery #include <algorithm> 98b7c156eSVernon Mauery #include <array> 108b7c156eSVernon Mauery 118b7c156eSVernon Mauery using namespace phosphor::logging; 128b7c156eSVernon Mauery using namespace sdbusplus::xyz::openbmc_project::Common::Error; 138b7c156eSVernon Mauery using namespace sdbusplus::xyz::openbmc_project::Control::Security::server; 148b7c156eSVernon Mauery 158b7c156eSVernon Mauery namespace ipmi 168b7c156eSVernon Mauery { 178b7c156eSVernon Mauery 188b7c156eSVernon Mauery // put the filter provider in an unnamed namespace 198b7c156eSVernon Mauery namespace 208b7c156eSVernon Mauery { 218b7c156eSVernon Mauery 228b7c156eSVernon Mauery /** @class AllowlistFilter 238b7c156eSVernon Mauery * 248b7c156eSVernon Mauery * Class that implements an IPMI message filter based 258b7c156eSVernon Mauery * on incoming interface and a restriction mode setting 268b7c156eSVernon Mauery */ 278b7c156eSVernon Mauery class AllowlistFilter 288b7c156eSVernon Mauery { 298b7c156eSVernon Mauery public: 308b7c156eSVernon Mauery AllowlistFilter(); 318b7c156eSVernon Mauery ~AllowlistFilter() = default; 32*b37abfb2SPatrick Williams AllowlistFilter(const AllowlistFilter&) = delete; 338b7c156eSVernon Mauery AllowlistFilter(AllowlistFilter&&) = delete; 34*b37abfb2SPatrick Williams AllowlistFilter& operator=(const AllowlistFilter&) = delete; 358b7c156eSVernon Mauery AllowlistFilter& operator=(AllowlistFilter&&) = delete; 368b7c156eSVernon Mauery 378b7c156eSVernon Mauery private: 388b7c156eSVernon Mauery void postInit(); 398b7c156eSVernon Mauery void cacheRestrictedAndPostCompleteMode(); 408b7c156eSVernon Mauery void handleRestrictedModeChange(sdbusplus::message_t& m); 418b7c156eSVernon Mauery void handlePostCompleteChange(sdbusplus::message_t& m); 428b7c156eSVernon Mauery void updatePostComplete(const std::string& value); 438b7c156eSVernon Mauery void updateRestrictionMode(const std::string& value); 448b7c156eSVernon Mauery ipmi::Cc filterMessage(ipmi::message::Request::ptr request); 458b7c156eSVernon Mauery void handleCoreBiosDoneChange(sdbusplus::message_t& m); 468b7c156eSVernon Mauery void cacheCoreBiosDone(); 478b7c156eSVernon Mauery 488b7c156eSVernon Mauery // the BMC KCS Policy Control Modes document uses different names 498b7c156eSVernon Mauery // than the RestrictionModes D-Bus interface; use aliases 508b7c156eSVernon Mauery static constexpr RestrictionMode::Modes restrictionModeAllowAll = 518b7c156eSVernon Mauery RestrictionMode::Modes::Provisioning; 528b7c156eSVernon Mauery static constexpr RestrictionMode::Modes restrictionModeRestricted = 538b7c156eSVernon Mauery RestrictionMode::Modes::ProvisionedHostWhitelist; 548b7c156eSVernon Mauery static constexpr RestrictionMode::Modes restrictionModeDenyAll = 558b7c156eSVernon Mauery RestrictionMode::Modes::ProvisionedHostDisabled; 568b7c156eSVernon Mauery 578b7c156eSVernon Mauery RestrictionMode::Modes restrictionMode = restrictionModeRestricted; 588b7c156eSVernon Mauery bool postCompleted = true; 598b7c156eSVernon Mauery bool coreBIOSDone = true; 608b7c156eSVernon Mauery int channelSMM = -1; 618b7c156eSVernon Mauery std::shared_ptr<sdbusplus::asio::connection> bus; 628b7c156eSVernon Mauery std::unique_ptr<sdbusplus::bus::match_t> modeChangeMatch; 638b7c156eSVernon Mauery std::unique_ptr<sdbusplus::bus::match_t> modeIntfAddedMatch; 648b7c156eSVernon Mauery std::unique_ptr<sdbusplus::bus::match_t> postCompleteMatch; 658b7c156eSVernon Mauery std::unique_ptr<sdbusplus::bus::match_t> postCompleteIntfAddedMatch; 668b7c156eSVernon Mauery std::unique_ptr<sdbusplus::bus::match_t> platStateChangeMatch; 678b7c156eSVernon Mauery std::unique_ptr<sdbusplus::bus::match_t> platStateIntfAddedMatch; 688b7c156eSVernon Mauery 698b7c156eSVernon Mauery static constexpr const char restrictionModeIntf[] = 708b7c156eSVernon Mauery "xyz.openbmc_project.Control.Security.RestrictionMode"; 718b7c156eSVernon Mauery static constexpr const char* systemOsStatusIntf = 728b7c156eSVernon Mauery "xyz.openbmc_project.State.OperatingSystem.Status"; 738b7c156eSVernon Mauery static constexpr const char* hostMiscIntf = 748b7c156eSVernon Mauery "xyz.openbmc_project.State.Host.Misc"; 758b7c156eSVernon Mauery static constexpr const char* restrictionModePath = 768b7c156eSVernon Mauery "/xyz/openbmc_project/control/security/restriction_mode"; 778b7c156eSVernon Mauery static constexpr const char* systemOsStatusPath = 788b7c156eSVernon Mauery "/xyz/openbmc_project/state/os"; 798b7c156eSVernon Mauery }; 808b7c156eSVernon Mauery 818b7c156eSVernon Mauery static inline uint8_t getSMMChannel() 828b7c156eSVernon Mauery { 838b7c156eSVernon Mauery ipmi::ChannelInfo chInfo; 848b7c156eSVernon Mauery 858b7c156eSVernon Mauery for (int channel = 0; channel < ipmi::maxIpmiChannels; channel++) 868b7c156eSVernon Mauery { 878b7c156eSVernon Mauery if (ipmi::getChannelInfo(channel, chInfo) != ipmi::ccSuccess) 888b7c156eSVernon Mauery { 898b7c156eSVernon Mauery continue; 908b7c156eSVernon Mauery } 918b7c156eSVernon Mauery 928b7c156eSVernon Mauery if (static_cast<ipmi::EChannelMediumType>(chInfo.mediumType) == 938b7c156eSVernon Mauery ipmi::EChannelMediumType::systemInterface && 948b7c156eSVernon Mauery channel != ipmi::channelSystemIface) 958b7c156eSVernon Mauery { 968b7c156eSVernon Mauery log<level::INFO>("SMM channel number", 978b7c156eSVernon Mauery entry("CHANNEL=%d", channel)); 988b7c156eSVernon Mauery return channel; 998b7c156eSVernon Mauery } 1008b7c156eSVernon Mauery } 1018b7c156eSVernon Mauery log<level::ERR>("Unable to find SMM Channel Info"); 1028b7c156eSVernon Mauery return -1; 1038b7c156eSVernon Mauery } 1048b7c156eSVernon Mauery 1058b7c156eSVernon Mauery AllowlistFilter::AllowlistFilter() 1068b7c156eSVernon Mauery { 1078b7c156eSVernon Mauery bus = getSdBus(); 1088b7c156eSVernon Mauery 1098b7c156eSVernon Mauery log<level::INFO>("Loading Allowlist filter"); 1108b7c156eSVernon Mauery 1118b7c156eSVernon Mauery ipmi::registerFilter(ipmi::prioOpenBmcBase, 1128b7c156eSVernon Mauery [this](ipmi::message::Request::ptr request) { 1138b7c156eSVernon Mauery return filterMessage(request); 1148b7c156eSVernon Mauery }); 1158b7c156eSVernon Mauery 1168b7c156eSVernon Mauery channelSMM = getSMMChannel(); 1178b7c156eSVernon Mauery // wait until io->run is going to fetch RestrictionMode 1188b7c156eSVernon Mauery post_work([this]() { postInit(); }); 1198b7c156eSVernon Mauery } 1208b7c156eSVernon Mauery 1218b7c156eSVernon Mauery void AllowlistFilter::cacheRestrictedAndPostCompleteMode() 1228b7c156eSVernon Mauery { 1238b7c156eSVernon Mauery try 1248b7c156eSVernon Mauery { 125*b37abfb2SPatrick Williams auto service = ipmi::getService(*bus, restrictionModeIntf, 126*b37abfb2SPatrick Williams restrictionModePath); 1278b7c156eSVernon Mauery ipmi::Value v = 1288b7c156eSVernon Mauery ipmi::getDbusProperty(*bus, service, restrictionModePath, 1298b7c156eSVernon Mauery restrictionModeIntf, "RestrictionMode"); 1308b7c156eSVernon Mauery auto& mode = std::get<std::string>(v); 1318b7c156eSVernon Mauery restrictionMode = RestrictionMode::convertModesFromString(mode); 1328b7c156eSVernon Mauery log<level::INFO>("Read restriction mode", 1338b7c156eSVernon Mauery entry("VALUE=%d", static_cast<int>(restrictionMode))); 1348b7c156eSVernon Mauery } 1358b7c156eSVernon Mauery catch (const std::exception&) 1368b7c156eSVernon Mauery { 1378b7c156eSVernon Mauery log<level::ERR>("Could not initialize provisioning mode, " 1388b7c156eSVernon Mauery "defaulting to restricted", 1398b7c156eSVernon Mauery entry("VALUE=%d", static_cast<int>(restrictionMode))); 1408b7c156eSVernon Mauery } 1418b7c156eSVernon Mauery 1428b7c156eSVernon Mauery try 1438b7c156eSVernon Mauery { 144*b37abfb2SPatrick Williams auto service = ipmi::getService(*bus, systemOsStatusIntf, 145*b37abfb2SPatrick Williams systemOsStatusPath); 146*b37abfb2SPatrick Williams ipmi::Value v = ipmi::getDbusProperty(*bus, service, systemOsStatusPath, 147*b37abfb2SPatrick Williams systemOsStatusIntf, 148*b37abfb2SPatrick Williams "OperatingSystemState"); 1498b7c156eSVernon Mauery auto& value = std::get<std::string>(v); 1508b7c156eSVernon Mauery updatePostComplete(value); 1518b7c156eSVernon Mauery log<level::INFO>("Read POST complete value", 1528b7c156eSVernon Mauery entry("VALUE=%d", postCompleted)); 1538b7c156eSVernon Mauery } 1548b7c156eSVernon Mauery catch (const std::exception&) 1558b7c156eSVernon Mauery { 1568b7c156eSVernon Mauery log<level::ERR>("Error in OperatingSystemState Get"); 1578b7c156eSVernon Mauery postCompleted = true; 1588b7c156eSVernon Mauery } 1598b7c156eSVernon Mauery } 1608b7c156eSVernon Mauery 1618b7c156eSVernon Mauery void AllowlistFilter::updateRestrictionMode(const std::string& value) 1628b7c156eSVernon Mauery { 1638b7c156eSVernon Mauery restrictionMode = RestrictionMode::convertModesFromString(value); 1648b7c156eSVernon Mauery log<level::INFO>("Updated restriction mode", 1658b7c156eSVernon Mauery entry("VALUE=%d", static_cast<int>(restrictionMode))); 1668b7c156eSVernon Mauery } 1678b7c156eSVernon Mauery 1688b7c156eSVernon Mauery void AllowlistFilter::handleRestrictedModeChange(sdbusplus::message_t& m) 1698b7c156eSVernon Mauery { 1708b7c156eSVernon Mauery std::string signal = m.get_member(); 1718b7c156eSVernon Mauery if (signal == "PropertiesChanged") 1728b7c156eSVernon Mauery { 1738b7c156eSVernon Mauery std::string intf; 1748b7c156eSVernon Mauery std::vector<std::pair<std::string, ipmi::Value>> propertyList; 1758b7c156eSVernon Mauery m.read(intf, propertyList); 1768b7c156eSVernon Mauery for (const auto& property : propertyList) 1778b7c156eSVernon Mauery { 1788b7c156eSVernon Mauery if (property.first == "RestrictionMode") 1798b7c156eSVernon Mauery { 1808b7c156eSVernon Mauery updateRestrictionMode(std::get<std::string>(property.second)); 1818b7c156eSVernon Mauery } 1828b7c156eSVernon Mauery } 1838b7c156eSVernon Mauery } 1848b7c156eSVernon Mauery else if (signal == "InterfacesAdded") 1858b7c156eSVernon Mauery { 1868b7c156eSVernon Mauery sdbusplus::message::object_path path; 1878b7c156eSVernon Mauery DbusInterfaceMap restModeObj; 1888b7c156eSVernon Mauery m.read(path, restModeObj); 1898b7c156eSVernon Mauery auto intfItr = restModeObj.find(restrictionModeIntf); 1908b7c156eSVernon Mauery if (intfItr == restModeObj.end()) 1918b7c156eSVernon Mauery { 1928b7c156eSVernon Mauery return; 1938b7c156eSVernon Mauery } 1948b7c156eSVernon Mauery PropertyMap& propertyList = intfItr->second; 1958b7c156eSVernon Mauery auto itr = propertyList.find("RestrictionMode"); 1968b7c156eSVernon Mauery if (itr == propertyList.end()) 1978b7c156eSVernon Mauery { 1988b7c156eSVernon Mauery return; 1998b7c156eSVernon Mauery } 2008b7c156eSVernon Mauery updateRestrictionMode(std::get<std::string>(itr->second)); 2018b7c156eSVernon Mauery } 2028b7c156eSVernon Mauery } 2038b7c156eSVernon Mauery 2048b7c156eSVernon Mauery void AllowlistFilter::updatePostComplete(const std::string& value) 2058b7c156eSVernon Mauery { 2068b7c156eSVernon Mauery // The short string "Standby" is deprecated in favor of the full enum string 2078b7c156eSVernon Mauery // Support for the short string will be removed in the future. 2088b7c156eSVernon Mauery postCompleted = (value == "Standby") || 2098b7c156eSVernon Mauery (value == "xyz.openbmc_project.State.OperatingSystem." 2108b7c156eSVernon Mauery "Status.OSStatus.Standby"); 2118b7c156eSVernon Mauery log<level::INFO>(postCompleted ? "Updated to POST Complete" 2128b7c156eSVernon Mauery : "Updated to !POST Complete"); 2138b7c156eSVernon Mauery } 2148b7c156eSVernon Mauery 2158b7c156eSVernon Mauery void AllowlistFilter::handlePostCompleteChange(sdbusplus::message_t& m) 2168b7c156eSVernon Mauery { 2178b7c156eSVernon Mauery std::string signal = m.get_member(); 2188b7c156eSVernon Mauery if (signal == "PropertiesChanged") 2198b7c156eSVernon Mauery { 2208b7c156eSVernon Mauery std::string intf; 2218b7c156eSVernon Mauery std::vector<std::pair<std::string, ipmi::Value>> propertyList; 2228b7c156eSVernon Mauery m.read(intf, propertyList); 2238b7c156eSVernon Mauery for (const auto& property : propertyList) 2248b7c156eSVernon Mauery { 2258b7c156eSVernon Mauery if (property.first == "OperatingSystemState") 2268b7c156eSVernon Mauery { 2278b7c156eSVernon Mauery updatePostComplete(std::get<std::string>(property.second)); 2288b7c156eSVernon Mauery } 2298b7c156eSVernon Mauery } 2308b7c156eSVernon Mauery } 2318b7c156eSVernon Mauery else if (signal == "InterfacesAdded") 2328b7c156eSVernon Mauery { 2338b7c156eSVernon Mauery sdbusplus::message::object_path path; 2348b7c156eSVernon Mauery DbusInterfaceMap postCompleteObj; 2358b7c156eSVernon Mauery m.read(path, postCompleteObj); 2368b7c156eSVernon Mauery auto intfItr = postCompleteObj.find(systemOsStatusIntf); 2378b7c156eSVernon Mauery if (intfItr == postCompleteObj.end()) 2388b7c156eSVernon Mauery { 2398b7c156eSVernon Mauery return; 2408b7c156eSVernon Mauery } 2418b7c156eSVernon Mauery PropertyMap& propertyList = intfItr->second; 2428b7c156eSVernon Mauery auto itr = propertyList.find("OperatingSystemState"); 2438b7c156eSVernon Mauery if (itr == propertyList.end()) 2448b7c156eSVernon Mauery { 2458b7c156eSVernon Mauery return; 2468b7c156eSVernon Mauery } 2478b7c156eSVernon Mauery updatePostComplete(std::get<std::string>(itr->second)); 2488b7c156eSVernon Mauery } 2498b7c156eSVernon Mauery } 2508b7c156eSVernon Mauery 2518b7c156eSVernon Mauery void AllowlistFilter::cacheCoreBiosDone() 2528b7c156eSVernon Mauery { 2538b7c156eSVernon Mauery std::string coreBiosDonePath; 2548b7c156eSVernon Mauery std::string coreBiosDoneService; 2558b7c156eSVernon Mauery try 2568b7c156eSVernon Mauery { 2578b7c156eSVernon Mauery ipmi::DbusObjectInfo coreBiosDoneObj = 2588b7c156eSVernon Mauery ipmi::getDbusObject(*bus, hostMiscIntf); 2598b7c156eSVernon Mauery 2608b7c156eSVernon Mauery coreBiosDonePath = coreBiosDoneObj.first; 2618b7c156eSVernon Mauery coreBiosDoneService = coreBiosDoneObj.second; 2628b7c156eSVernon Mauery } 2638b7c156eSVernon Mauery catch (const std::exception&) 2648b7c156eSVernon Mauery { 2658b7c156eSVernon Mauery log<level::ERR>("Could not initialize CoreBiosDone, " 2668b7c156eSVernon Mauery "coreBIOSDone asserted as default"); 2678b7c156eSVernon Mauery return; 2688b7c156eSVernon Mauery } 2698b7c156eSVernon Mauery 2708b7c156eSVernon Mauery bus->async_method_call( 2718b7c156eSVernon Mauery [this](boost::system::error_code ec, const ipmi::Value& v) { 2728b7c156eSVernon Mauery if (ec) 2738b7c156eSVernon Mauery { 2748b7c156eSVernon Mauery log<level::ERR>( 2758b7c156eSVernon Mauery "async call failed, coreBIOSDone asserted as default"); 2768b7c156eSVernon Mauery return; 2778b7c156eSVernon Mauery } 2788b7c156eSVernon Mauery coreBIOSDone = std::get<bool>(v); 2798b7c156eSVernon Mauery log<level::INFO>("Read CoreBiosDone", 2808b7c156eSVernon Mauery entry("VALUE=%d", static_cast<int>(coreBIOSDone))); 2818b7c156eSVernon Mauery }, 2828b7c156eSVernon Mauery coreBiosDoneService, coreBiosDonePath, 2838b7c156eSVernon Mauery "org.freedesktop.DBus.Properties", "Get", hostMiscIntf, "CoreBiosDone"); 2848b7c156eSVernon Mauery } 2858b7c156eSVernon Mauery 2868b7c156eSVernon Mauery void AllowlistFilter::handleCoreBiosDoneChange(sdbusplus::message_t& msg) 2878b7c156eSVernon Mauery { 2888b7c156eSVernon Mauery std::string signal = msg.get_member(); 2898b7c156eSVernon Mauery if (signal == "PropertiesChanged") 2908b7c156eSVernon Mauery { 2918b7c156eSVernon Mauery std::string intf; 2928b7c156eSVernon Mauery std::vector<std::pair<std::string, ipmi::Value>> propertyList; 2938b7c156eSVernon Mauery msg.read(intf, propertyList); 2948b7c156eSVernon Mauery auto it = 2958b7c156eSVernon Mauery std::find_if(propertyList.begin(), propertyList.end(), 2968b7c156eSVernon Mauery [](const std::pair<std::string, ipmi::Value>& prop) { 2978b7c156eSVernon Mauery return prop.first == "CoreBiosDone"; 2988b7c156eSVernon Mauery }); 2998b7c156eSVernon Mauery 3008b7c156eSVernon Mauery if (it != propertyList.end()) 3018b7c156eSVernon Mauery { 3028b7c156eSVernon Mauery coreBIOSDone = std::get<bool>(it->second); 3038b7c156eSVernon Mauery log<level::INFO>(coreBIOSDone ? "coreBIOSDone asserted" 3048b7c156eSVernon Mauery : "coreBIOSDone not asserted"); 3058b7c156eSVernon Mauery } 3068b7c156eSVernon Mauery } 3078b7c156eSVernon Mauery else if (signal == "InterfacesAdded") 3088b7c156eSVernon Mauery { 3098b7c156eSVernon Mauery sdbusplus::message::object_path path; 3108b7c156eSVernon Mauery DbusInterfaceMap eSpiresetObj; 3118b7c156eSVernon Mauery msg.read(path, eSpiresetObj); 3128b7c156eSVernon Mauery auto intfItr = eSpiresetObj.find(hostMiscIntf); 3138b7c156eSVernon Mauery if (intfItr == eSpiresetObj.end()) 3148b7c156eSVernon Mauery { 3158b7c156eSVernon Mauery return; 3168b7c156eSVernon Mauery } 3178b7c156eSVernon Mauery PropertyMap& propertyList = intfItr->second; 3188b7c156eSVernon Mauery auto itr = propertyList.find("CoreBiosDone"); 3198b7c156eSVernon Mauery if (itr == propertyList.end()) 3208b7c156eSVernon Mauery { 3218b7c156eSVernon Mauery return; 3228b7c156eSVernon Mauery } 3238b7c156eSVernon Mauery coreBIOSDone = std::get<bool>(itr->second); 3248b7c156eSVernon Mauery log<level::INFO>(coreBIOSDone ? "coreBIOSDone asserted" 3258b7c156eSVernon Mauery : "coreBIOSDone not asserted"); 3268b7c156eSVernon Mauery } 3278b7c156eSVernon Mauery } 3288b7c156eSVernon Mauery 3298b7c156eSVernon Mauery void AllowlistFilter::postInit() 3308b7c156eSVernon Mauery { 3318b7c156eSVernon Mauery // Wait for changes on Restricted mode 3328b7c156eSVernon Mauery namespace rules = sdbusplus::bus::match::rules; 3338b7c156eSVernon Mauery const std::string filterStrModeChange = 3348b7c156eSVernon Mauery rules::type::signal() + rules::member("PropertiesChanged") + 3358b7c156eSVernon Mauery rules::interface("org.freedesktop.DBus.Properties") + 3368b7c156eSVernon Mauery rules::argN(0, restrictionModeIntf); 3378b7c156eSVernon Mauery 3388b7c156eSVernon Mauery const std::string filterStrModeIntfAdd = 3398b7c156eSVernon Mauery rules::interfacesAdded() + 3408b7c156eSVernon Mauery rules::argNpath( 3418b7c156eSVernon Mauery 0, "/xyz/openbmc_project/control/security/restriction_mode"); 3428b7c156eSVernon Mauery 3438b7c156eSVernon Mauery const std::string filterStrPostComplete = 3448b7c156eSVernon Mauery rules::type::signal() + rules::member("PropertiesChanged") + 3458b7c156eSVernon Mauery rules::interface("org.freedesktop.DBus.Properties") + 3468b7c156eSVernon Mauery rules::argN(0, systemOsStatusIntf); 3478b7c156eSVernon Mauery 3488b7c156eSVernon Mauery const std::string filterStrPostIntfAdd = 3498b7c156eSVernon Mauery rules::interfacesAdded() + 3508b7c156eSVernon Mauery rules::argNpath(0, "/xyz/openbmc_project/state/os"); 3518b7c156eSVernon Mauery 3528b7c156eSVernon Mauery const std::string filterStrPlatStateChange = 3538b7c156eSVernon Mauery rules::type::signal() + rules::member("PropertiesChanged") + 3548b7c156eSVernon Mauery rules::interface("org.freedesktop.DBus.Properties") + 3558b7c156eSVernon Mauery rules::argN(0, hostMiscIntf); 3568b7c156eSVernon Mauery 3578b7c156eSVernon Mauery const std::string filterStrPlatStateIntfAdd = 3588b7c156eSVernon Mauery rules::interfacesAdded() + 3598b7c156eSVernon Mauery rules::argNpath(0, "/xyz/openbmc_project/misc/platform_state"); 3608b7c156eSVernon Mauery 3618b7c156eSVernon Mauery modeChangeMatch = std::make_unique<sdbusplus::bus::match_t>( 3628b7c156eSVernon Mauery *bus, filterStrModeChange, 3638b7c156eSVernon Mauery [this](sdbusplus::message_t& m) { handleRestrictedModeChange(m); }); 3648b7c156eSVernon Mauery modeIntfAddedMatch = std::make_unique<sdbusplus::bus::match_t>( 3658b7c156eSVernon Mauery *bus, filterStrModeIntfAdd, 3668b7c156eSVernon Mauery [this](sdbusplus::message_t& m) { handleRestrictedModeChange(m); }); 3678b7c156eSVernon Mauery 3688b7c156eSVernon Mauery postCompleteMatch = std::make_unique<sdbusplus::bus::match_t>( 3698b7c156eSVernon Mauery *bus, filterStrPostComplete, 3708b7c156eSVernon Mauery [this](sdbusplus::message_t& m) { handlePostCompleteChange(m); }); 3718b7c156eSVernon Mauery 3728b7c156eSVernon Mauery postCompleteIntfAddedMatch = std::make_unique<sdbusplus::bus::match_t>( 3738b7c156eSVernon Mauery *bus, filterStrPostIntfAdd, 3748b7c156eSVernon Mauery [this](sdbusplus::message_t& m) { handlePostCompleteChange(m); }); 3758b7c156eSVernon Mauery 3768b7c156eSVernon Mauery platStateChangeMatch = std::make_unique<sdbusplus::bus::match_t>( 3778b7c156eSVernon Mauery *bus, filterStrPlatStateChange, 3788b7c156eSVernon Mauery [this](sdbusplus::message_t& m) { handleCoreBiosDoneChange(m); }); 3798b7c156eSVernon Mauery 3808b7c156eSVernon Mauery platStateIntfAddedMatch = std::make_unique<sdbusplus::bus::match_t>( 3818b7c156eSVernon Mauery *bus, filterStrPlatStateIntfAdd, 3828b7c156eSVernon Mauery [this](sdbusplus::message_t& m) { handleCoreBiosDoneChange(m); }); 3838b7c156eSVernon Mauery 3848b7c156eSVernon Mauery // Initialize restricted mode 3858b7c156eSVernon Mauery cacheRestrictedAndPostCompleteMode(); 3868b7c156eSVernon Mauery // Initialize CoreBiosDone 3878b7c156eSVernon Mauery cacheCoreBiosDone(); 3888b7c156eSVernon Mauery } 3898b7c156eSVernon Mauery 3908b7c156eSVernon Mauery ipmi::Cc AllowlistFilter::filterMessage(ipmi::message::Request::ptr request) 3918b7c156eSVernon Mauery { 3928b7c156eSVernon Mauery auto channelMask = static_cast<unsigned short>(1 << request->ctx->channel); 3938b7c156eSVernon Mauery bool Allowlisted = std::binary_search( 3948b7c156eSVernon Mauery allowlist.cbegin(), allowlist.cend(), 3958b7c156eSVernon Mauery std::make_tuple(request->ctx->netFn, request->ctx->cmd, channelMask), 3968b7c156eSVernon Mauery [](const netfncmd_tuple& first, const netfncmd_tuple& value) { 3978b7c156eSVernon Mauery return (std::get<2>(first) & std::get<2>(value)) 3988b7c156eSVernon Mauery ? first < std::make_tuple(std::get<0>(value), 3998b7c156eSVernon Mauery std::get<1>(value), 4008b7c156eSVernon Mauery std::get<2>(first)) 4018b7c156eSVernon Mauery : first < value; 4028b7c156eSVernon Mauery }); 4038b7c156eSVernon Mauery 4048b7c156eSVernon Mauery // no special handling for non-system-interface channels 4058b7c156eSVernon Mauery if (!(request->ctx->channel == ipmi::channelSystemIface || 4068b7c156eSVernon Mauery request->ctx->channel == channelSMM)) 4078b7c156eSVernon Mauery { 4088b7c156eSVernon Mauery if (!Allowlisted) 4098b7c156eSVernon Mauery { 4108b7c156eSVernon Mauery log<level::INFO>("Channel/NetFn/Cmd not Allowlisted", 4118b7c156eSVernon Mauery entry("CHANNEL=0x%X", request->ctx->channel), 4128b7c156eSVernon Mauery entry("NETFN=0x%X", int(request->ctx->netFn)), 4138b7c156eSVernon Mauery entry("CMD=0x%X", int(request->ctx->cmd))); 4148b7c156eSVernon Mauery return ipmi::ccInsufficientPrivilege; 4158b7c156eSVernon Mauery } 4168b7c156eSVernon Mauery return ipmi::ccSuccess; 4178b7c156eSVernon Mauery } 4188b7c156eSVernon Mauery 4198b7c156eSVernon Mauery // for system interface, filtering is done as follows: 4208b7c156eSVernon Mauery // Allow All: preboot ? ccSuccess : ccSuccess 4218b7c156eSVernon Mauery // Restricted: preboot ? ccSuccess : 4228b7c156eSVernon Mauery // ( Allowlist ? ccSuccess : ccInsufficientPrivilege ) 4238b7c156eSVernon Mauery // Deny All: preboot ? ccSuccess : ccInsufficientPrivilege 4248b7c156eSVernon Mauery 4258b7c156eSVernon Mauery if (!(postCompleted || coreBIOSDone)) 4268b7c156eSVernon Mauery { 4278b7c156eSVernon Mauery // Allow all commands, till POST or CoreBiosDone is completed 4288b7c156eSVernon Mauery return ipmi::ccSuccess; 4298b7c156eSVernon Mauery } 4308b7c156eSVernon Mauery 4318b7c156eSVernon Mauery switch (restrictionMode) 4328b7c156eSVernon Mauery { 4338b7c156eSVernon Mauery case RestrictionMode::Modes::None: 4348b7c156eSVernon Mauery case restrictionModeAllowAll: 4358b7c156eSVernon Mauery { 4368b7c156eSVernon Mauery // Allow All 4378b7c156eSVernon Mauery return ipmi::ccSuccess; 4388b7c156eSVernon Mauery break; 4398b7c156eSVernon Mauery } 4408b7c156eSVernon Mauery case restrictionModeRestricted: 4418b7c156eSVernon Mauery { 4428b7c156eSVernon Mauery // Restricted - follow Allowlist 4438b7c156eSVernon Mauery break; 4448b7c156eSVernon Mauery } 4458b7c156eSVernon Mauery case restrictionModeDenyAll: 4468b7c156eSVernon Mauery { 4478b7c156eSVernon Mauery // Deny All 4488b7c156eSVernon Mauery Allowlisted = false; 4498b7c156eSVernon Mauery break; 4508b7c156eSVernon Mauery } 45180d4d5f9SMatt Simmering default: // for Allowlist and Blocklist 4528b7c156eSVernon Mauery return ipmi::ccInsufficientPrivilege; 4538b7c156eSVernon Mauery } 4548b7c156eSVernon Mauery 4558b7c156eSVernon Mauery if (!Allowlisted) 4568b7c156eSVernon Mauery { 4578b7c156eSVernon Mauery log<level::INFO>("Channel/NetFn/Cmd not allowlisted", 4588b7c156eSVernon Mauery entry("CHANNEL=0x%X", request->ctx->channel), 4598b7c156eSVernon Mauery entry("NETFN=0x%X", int(request->ctx->netFn)), 4608b7c156eSVernon Mauery entry("CMD=0x%X", int(request->ctx->cmd))); 4618b7c156eSVernon Mauery return ipmi::ccInsufficientPrivilege; 4628b7c156eSVernon Mauery } 4638b7c156eSVernon Mauery return ipmi::ccSuccess; 4648b7c156eSVernon Mauery } // namespace 4658b7c156eSVernon Mauery 4668b7c156eSVernon Mauery // instantiate the AllowlistFilter when this shared object is loaded 4678b7c156eSVernon Mauery AllowlistFilter allowlistFilter; 4688b7c156eSVernon Mauery 4698b7c156eSVernon Mauery } // namespace 4708b7c156eSVernon Mauery 4718b7c156eSVernon Mauery } // namespace ipmi 472