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