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