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