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