1 #include "libpldm/base.h" 2 #include "libpldm/bios.h" 3 #include "libpldm/pdr.h" 4 #include "libpldm/platform.h" 5 6 #include "common/flight_recorder.hpp" 7 #include "common/utils.hpp" 8 #include "dbus_impl_requester.hpp" 9 #include "fw-update/manager.hpp" 10 #include "invoker.hpp" 11 #include "requester/handler.hpp" 12 #include "requester/mctp_endpoint_discovery.hpp" 13 #include "requester/request.hpp" 14 15 #include <err.h> 16 #include <getopt.h> 17 #include <poll.h> 18 #include <stdlib.h> 19 #include <sys/socket.h> 20 #include <sys/types.h> 21 #include <sys/un.h> 22 #include <unistd.h> 23 24 #include <sdeventplus/event.hpp> 25 #include <sdeventplus/source/io.hpp> 26 #include <sdeventplus/source/signal.hpp> 27 #include <stdplus/signal.hpp> 28 29 #include <cstdio> 30 #include <cstring> 31 #include <fstream> 32 #include <iomanip> 33 #include <iostream> 34 #include <iterator> 35 #include <memory> 36 #include <optional> 37 #include <sstream> 38 #include <stdexcept> 39 #include <string> 40 #include <vector> 41 42 #ifdef LIBPLDMRESPONDER 43 #include "dbus_impl_pdr.hpp" 44 #include "host-bmc/dbus_to_event_handler.hpp" 45 #include "host-bmc/dbus_to_host_effecters.hpp" 46 #include "host-bmc/host_condition.hpp" 47 #include "host-bmc/host_pdr_handler.hpp" 48 #include "libpldmresponder/base.hpp" 49 #include "libpldmresponder/bios.hpp" 50 #include "libpldmresponder/fru.hpp" 51 #include "libpldmresponder/oem_handler.hpp" 52 #include "libpldmresponder/platform.hpp" 53 #include "xyz/openbmc_project/PLDM/Event/server.hpp" 54 #endif 55 56 #ifdef OEM_IBM 57 #include "libpldmresponder/file_io.hpp" 58 #include "libpldmresponder/oem_ibm_handler.hpp" 59 #endif 60 61 constexpr uint8_t MCTP_MSG_TYPE_PLDM = 1; 62 63 using namespace pldm; 64 using namespace sdeventplus; 65 using namespace sdeventplus::source; 66 using namespace pldm::responder; 67 using namespace pldm::utils; 68 using sdeventplus::source::Signal; 69 using namespace pldm::flightrecorder; 70 71 void interruptFlightRecorderCallBack(Signal& /*signal*/, 72 const struct signalfd_siginfo*) 73 { 74 std::cerr << "\nReceived SIGUR1(10) Signal interrupt\n"; 75 76 // obtain the flight recorder instance and dump the recorder 77 FlightRecorder::GetInstance().playRecorder(); 78 } 79 80 static std::optional<Response> 81 processRxMsg(const std::vector<uint8_t>& requestMsg, Invoker& invoker, 82 requester::Handler<requester::Request>& handler, 83 fw_update::Manager* fwManager) 84 { 85 using type = uint8_t; 86 uint8_t eid = requestMsg[0]; 87 pldm_header_info hdrFields{}; 88 auto hdr = reinterpret_cast<const pldm_msg_hdr*>( 89 requestMsg.data() + sizeof(eid) + sizeof(type)); 90 if (PLDM_SUCCESS != unpack_pldm_header(hdr, &hdrFields)) 91 { 92 std::cerr << "Empty PLDM request header \n"; 93 return std::nullopt; 94 } 95 96 if (PLDM_RESPONSE != hdrFields.msg_type) 97 { 98 Response response; 99 auto request = reinterpret_cast<const pldm_msg*>(hdr); 100 size_t requestLen = requestMsg.size() - sizeof(struct pldm_msg_hdr) - 101 sizeof(eid) - sizeof(type); 102 try 103 { 104 if (hdrFields.pldm_type != PLDM_FWUP) 105 { 106 response = 107 invoker.handle(hdrFields.pldm_type, hdrFields.command, 108 request, requestLen); 109 } 110 else 111 { 112 response = fwManager->handleRequest(eid, hdrFields.command, 113 request, requestLen); 114 } 115 } 116 catch (const std::out_of_range& e) 117 { 118 uint8_t completion_code = PLDM_ERROR_UNSUPPORTED_PLDM_CMD; 119 response.resize(sizeof(pldm_msg_hdr)); 120 auto responseHdr = reinterpret_cast<pldm_msg_hdr*>(response.data()); 121 pldm_header_info header{}; 122 header.msg_type = PLDM_RESPONSE; 123 header.instance = hdrFields.instance; 124 header.pldm_type = hdrFields.pldm_type; 125 header.command = hdrFields.command; 126 if (PLDM_SUCCESS != pack_pldm_header(&header, responseHdr)) 127 { 128 std::cerr << "Failed adding response header \n"; 129 return std::nullopt; 130 } 131 response.insert(response.end(), completion_code); 132 } 133 return response; 134 } 135 else if (PLDM_RESPONSE == hdrFields.msg_type) 136 { 137 auto response = reinterpret_cast<const pldm_msg*>(hdr); 138 size_t responseLen = requestMsg.size() - sizeof(struct pldm_msg_hdr) - 139 sizeof(eid) - sizeof(type); 140 handler.handleResponse(eid, hdrFields.instance, hdrFields.pldm_type, 141 hdrFields.command, response, responseLen); 142 } 143 return std::nullopt; 144 } 145 146 void optionUsage(void) 147 { 148 std::cerr << "Usage: pldmd [options]\n"; 149 std::cerr << "Options:\n"; 150 std::cerr 151 << " --verbose=<0/1> 0 - Disable verbosity, 1 - Enable verbosity\n"; 152 std::cerr << "Defaulted settings: --verbose=0 \n"; 153 } 154 155 int main(int argc, char** argv) 156 { 157 bool verbose = false; 158 static struct option long_options[] = { 159 {"verbose", required_argument, 0, 'v'}, {0, 0, 0, 0}}; 160 161 auto argflag = getopt_long(argc, argv, "v:", long_options, nullptr); 162 switch (argflag) 163 { 164 case 'v': 165 switch (std::stoi(optarg)) 166 { 167 case 0: 168 verbose = false; 169 break; 170 case 1: 171 verbose = true; 172 break; 173 default: 174 optionUsage(); 175 exit(EXIT_FAILURE); 176 } 177 break; 178 case -1: 179 break; 180 default: 181 exit(EXIT_FAILURE); 182 } 183 184 /* Create local socket. */ 185 int returnCode = 0; 186 int sockfd = socket(AF_UNIX, SOCK_SEQPACKET, 0); 187 if (-1 == sockfd) 188 { 189 returnCode = -errno; 190 std::cerr << "Failed to create the socket, RC= " << returnCode << "\n"; 191 exit(EXIT_FAILURE); 192 } 193 socklen_t optlen; 194 int currentSendbuffSize; 195 196 // Get Current send buffer size 197 optlen = sizeof(currentSendbuffSize); 198 199 int res = getsockopt(sockfd, SOL_SOCKET, SO_SNDBUF, ¤tSendbuffSize, 200 &optlen); 201 if (res == -1) 202 { 203 std::cerr << "Error in obtaining the default send buffer size, Error : " 204 << strerror(errno) << std::endl; 205 } 206 auto event = Event::get_default(); 207 auto& bus = pldm::utils::DBusHandler::getBus(); 208 sdbusplus::server::manager::manager objManager( 209 bus, "/xyz/openbmc_project/software"); 210 dbus_api::Requester dbusImplReq(bus, "/xyz/openbmc_project/pldm"); 211 212 Invoker invoker{}; 213 requester::Handler<requester::Request> reqHandler( 214 sockfd, event, dbusImplReq, currentSendbuffSize, verbose); 215 216 #ifdef LIBPLDMRESPONDER 217 using namespace pldm::state_sensor; 218 dbus_api::Host dbusImplHost(bus, "/xyz/openbmc_project/pldm"); 219 std::unique_ptr<pldm_pdr, decltype(&pldm_pdr_destroy)> pdrRepo( 220 pldm_pdr_init(), pldm_pdr_destroy); 221 std::unique_ptr<pldm_entity_association_tree, 222 decltype(&pldm_entity_association_tree_destroy)> 223 entityTree(pldm_entity_association_tree_init(), 224 pldm_entity_association_tree_destroy); 225 std::unique_ptr<pldm_entity_association_tree, 226 decltype(&pldm_entity_association_tree_destroy)> 227 bmcEntityTree(pldm_entity_association_tree_init(), 228 pldm_entity_association_tree_destroy); 229 std::shared_ptr<HostPDRHandler> hostPDRHandler; 230 std::unique_ptr<pldm::host_effecters::HostEffecterParser> 231 hostEffecterParser; 232 std::unique_ptr<DbusToPLDMEvent> dbusToPLDMEventHandler; 233 DBusHandler dbusHandler; 234 auto hostEID = pldm::utils::readHostEID(); 235 if (hostEID) 236 { 237 hostPDRHandler = std::make_shared<HostPDRHandler>( 238 sockfd, hostEID, event, pdrRepo.get(), EVENTS_JSONS_DIR, 239 entityTree.get(), bmcEntityTree.get(), dbusImplReq, &reqHandler); 240 // HostFirmware interface needs access to hostPDR to know if host 241 // is running 242 dbusImplHost.setHostPdrObj(hostPDRHandler); 243 244 hostEffecterParser = 245 std::make_unique<pldm::host_effecters::HostEffecterParser>( 246 &dbusImplReq, sockfd, pdrRepo.get(), &dbusHandler, 247 HOST_JSONS_DIR, &reqHandler); 248 dbusToPLDMEventHandler = std::make_unique<DbusToPLDMEvent>( 249 sockfd, hostEID, dbusImplReq, &reqHandler); 250 } 251 std::unique_ptr<oem_platform::Handler> oemPlatformHandler{}; 252 253 #ifdef OEM_IBM 254 std::unique_ptr<pldm::responder::CodeUpdate> codeUpdate = 255 std::make_unique<pldm::responder::CodeUpdate>(&dbusHandler); 256 codeUpdate->clearDirPath(LID_STAGING_DIR); 257 oemPlatformHandler = std::make_unique<oem_ibm_platform::Handler>( 258 &dbusHandler, codeUpdate.get(), sockfd, hostEID, dbusImplReq, event, 259 &reqHandler); 260 codeUpdate->setOemPlatformHandler(oemPlatformHandler.get()); 261 invoker.registerHandler(PLDM_OEM, std::make_unique<oem_ibm::Handler>( 262 oemPlatformHandler.get(), sockfd, 263 hostEID, &dbusImplReq, &reqHandler)); 264 #endif 265 invoker.registerHandler( 266 PLDM_BIOS, std::make_unique<bios::Handler>(sockfd, hostEID, 267 &dbusImplReq, &reqHandler)); 268 auto fruHandler = std::make_unique<fru::Handler>( 269 FRU_JSONS_DIR, FRU_MASTER_JSON, pdrRepo.get(), entityTree.get(), 270 bmcEntityTree.get()); 271 // FRU table is built lazily when a FRU command or Get PDR command is 272 // handled. To enable building FRU table, the FRU handler is passed to the 273 // Platform handler. 274 auto platformHandler = std::make_unique<platform::Handler>( 275 &dbusHandler, PDR_JSONS_DIR, pdrRepo.get(), hostPDRHandler.get(), 276 dbusToPLDMEventHandler.get(), fruHandler.get(), 277 oemPlatformHandler.get(), event, true); 278 #ifdef OEM_IBM 279 pldm::responder::oem_ibm_platform::Handler* oemIbmPlatformHandler = 280 dynamic_cast<pldm::responder::oem_ibm_platform::Handler*>( 281 oemPlatformHandler.get()); 282 oemIbmPlatformHandler->setPlatformHandler(platformHandler.get()); 283 #endif 284 285 invoker.registerHandler(PLDM_PLATFORM, std::move(platformHandler)); 286 invoker.registerHandler( 287 PLDM_BASE, 288 std::make_unique<base::Handler>(hostEID, dbusImplReq, event, 289 oemPlatformHandler.get(), &reqHandler)); 290 invoker.registerHandler(PLDM_FRU, std::move(fruHandler)); 291 dbus_api::Pdr dbusImplPdr(bus, "/xyz/openbmc_project/pldm", pdrRepo.get()); 292 sdbusplus::xyz::openbmc_project::PLDM::server::Event dbusImplEvent( 293 bus, "/xyz/openbmc_project/pldm"); 294 295 #endif 296 297 pldm::utils::CustomFD socketFd(sockfd); 298 299 struct sockaddr_un addr 300 {}; 301 addr.sun_family = AF_UNIX; 302 const char path[] = "\0mctp-mux"; 303 memcpy(addr.sun_path, path, sizeof(path) - 1); 304 int result = connect(socketFd(), reinterpret_cast<struct sockaddr*>(&addr), 305 sizeof(path) + sizeof(addr.sun_family) - 1); 306 if (-1 == result) 307 { 308 returnCode = -errno; 309 std::cerr << "Failed to connect to the socket, RC= " << returnCode 310 << "\n"; 311 exit(EXIT_FAILURE); 312 } 313 314 result = write(socketFd(), &MCTP_MSG_TYPE_PLDM, sizeof(MCTP_MSG_TYPE_PLDM)); 315 if (-1 == result) 316 { 317 returnCode = -errno; 318 std::cerr << "Failed to send message type as pldm to mctp, RC= " 319 << returnCode << "\n"; 320 exit(EXIT_FAILURE); 321 } 322 323 std::unique_ptr<fw_update::Manager> fwManager = 324 std::make_unique<fw_update::Manager>(event, reqHandler, dbusImplReq); 325 std::unique_ptr<MctpDiscovery> mctpDiscoveryHandler = 326 std::make_unique<MctpDiscovery>(bus, fwManager.get()); 327 328 auto callback = [verbose, &invoker, &reqHandler, currentSendbuffSize, 329 &fwManager](IO& io, int fd, uint32_t revents) mutable { 330 if (!(revents & EPOLLIN)) 331 { 332 return; 333 } 334 335 // Outgoing message. 336 struct iovec iov[2]{}; 337 338 // This structure contains the parameter information for the response 339 // message. 340 struct msghdr msg 341 {}; 342 343 int returnCode = 0; 344 ssize_t peekedLength = recv(fd, nullptr, 0, MSG_PEEK | MSG_TRUNC); 345 if (0 == peekedLength) 346 { 347 // MCTP daemon has closed the socket this daemon is connected to. 348 // This may or may not be an error scenario, in either case the 349 // recovery mechanism for this daemon is to restart, and hence exit 350 // the event loop, that will cause this daemon to exit with a 351 // failure code. 352 io.get_event().exit(0); 353 } 354 else if (peekedLength <= -1) 355 { 356 returnCode = -errno; 357 std::cerr << "recv system call failed, RC= " << returnCode << "\n"; 358 } 359 else 360 { 361 std::vector<uint8_t> requestMsg(peekedLength); 362 auto recvDataLength = recv( 363 fd, static_cast<void*>(requestMsg.data()), peekedLength, 0); 364 if (recvDataLength == peekedLength) 365 { 366 FlightRecorder::GetInstance().saveRecord(requestMsg, false); 367 if (verbose) 368 { 369 printBuffer(Rx, requestMsg); 370 } 371 372 if (MCTP_MSG_TYPE_PLDM != requestMsg[1]) 373 { 374 // Skip this message and continue. 375 } 376 else 377 { 378 // process message and send response 379 auto response = processRxMsg(requestMsg, invoker, 380 reqHandler, fwManager.get()); 381 if (response.has_value()) 382 { 383 FlightRecorder::GetInstance().saveRecord(*response, 384 true); 385 if (verbose) 386 { 387 printBuffer(Tx, *response); 388 } 389 390 iov[0].iov_base = &requestMsg[0]; 391 iov[0].iov_len = 392 sizeof(requestMsg[0]) + sizeof(requestMsg[1]); 393 iov[1].iov_base = (*response).data(); 394 iov[1].iov_len = (*response).size(); 395 396 msg.msg_iov = iov; 397 msg.msg_iovlen = sizeof(iov) / sizeof(iov[0]); 398 if (currentSendbuffSize >= 0 && 399 (size_t)currentSendbuffSize < (*response).size()) 400 { 401 int oldBuffSize = currentSendbuffSize; 402 currentSendbuffSize = (*response).size(); 403 int res = setsockopt(fd, SOL_SOCKET, SO_SNDBUF, 404 ¤tSendbuffSize, 405 sizeof(currentSendbuffSize)); 406 if (res == -1) 407 { 408 std::cerr 409 << "Responder : Failed to set the new send buffer size [bytes] : " 410 << currentSendbuffSize 411 << " from current size [bytes] : " 412 << oldBuffSize 413 << ", Error : " << strerror(errno) 414 << std::endl; 415 return; 416 } 417 } 418 419 int result = sendmsg(fd, &msg, 0); 420 if (-1 == result) 421 { 422 returnCode = -errno; 423 std::cerr << "sendto system call failed, RC= " 424 << returnCode << "\n"; 425 } 426 } 427 } 428 } 429 else 430 { 431 std::cerr 432 << "Failure to read peeked length packet. peekedLength= " 433 << peekedLength << " recvDataLength=" << recvDataLength 434 << "\n"; 435 } 436 } 437 }; 438 439 bus.attach_event(event.get(), SD_EVENT_PRIORITY_NORMAL); 440 bus.request_name("xyz.openbmc_project.PLDM"); 441 IO io(event, socketFd(), EPOLLIN, std::move(callback)); 442 #ifdef LIBPLDMRESPONDER 443 if (hostPDRHandler) 444 { 445 hostPDRHandler->setHostFirmwareCondition(); 446 } 447 #endif 448 stdplus::signal::block(SIGUSR1); 449 sdeventplus::source::Signal sigUsr1( 450 event, SIGUSR1, std::bind_front(&interruptFlightRecorderCallBack)); 451 returnCode = event.loop(); 452 453 if (shutdown(sockfd, SHUT_RDWR)) 454 { 455 std::perror("Failed to shutdown the socket"); 456 } 457 if (returnCode) 458 { 459 exit(EXIT_FAILURE); 460 } 461 462 exit(EXIT_SUCCESS); 463 } 464