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_host_effecters.hpp" 10 #include "host-bmc/host_pdr_handler.hpp" 11 #include "invoker.hpp" 12 #include "libpldmresponder/base.hpp" 13 #include "libpldmresponder/bios.hpp" 14 #include "libpldmresponder/fru.hpp" 15 #include "libpldmresponder/platform.hpp" 16 #include "xyz/openbmc_project/PLDM/Event/server.hpp" 17 18 #include <err.h> 19 #include <getopt.h> 20 #include <poll.h> 21 #include <stdlib.h> 22 #include <sys/socket.h> 23 #include <sys/types.h> 24 #include <sys/un.h> 25 #include <unistd.h> 26 27 #include <sdeventplus/event.hpp> 28 #include <sdeventplus/source/io.hpp> 29 30 #include <cstdio> 31 #include <cstring> 32 #include <fstream> 33 #include <iomanip> 34 #include <iostream> 35 #include <iterator> 36 #include <memory> 37 #include <sstream> 38 #include <stdexcept> 39 #include <string> 40 #include <vector> 41 42 #ifdef OEM_IBM 43 #include "libpldmresponder/file_io.hpp" 44 #endif 45 46 constexpr uint8_t MCTP_MSG_TYPE_PLDM = 1; 47 48 using namespace pldm::responder; 49 using namespace pldm; 50 using namespace sdeventplus; 51 using namespace sdeventplus::source; 52 53 static Response processRxMsg(const std::vector<uint8_t>& requestMsg, 54 Invoker& invoker, dbus_api::Requester& requester) 55 { 56 57 Response response; 58 uint8_t eid = requestMsg[0]; 59 uint8_t type = requestMsg[1]; 60 pldm_header_info hdrFields{}; 61 auto hdr = reinterpret_cast<const pldm_msg_hdr*>( 62 requestMsg.data() + sizeof(eid) + sizeof(type)); 63 if (PLDM_SUCCESS != unpack_pldm_header(hdr, &hdrFields)) 64 { 65 std::cerr << "Empty PLDM request header \n"; 66 } 67 else if (PLDM_RESPONSE != hdrFields.msg_type) 68 { 69 auto request = reinterpret_cast<const pldm_msg*>(hdr); 70 size_t requestLen = requestMsg.size() - sizeof(struct pldm_msg_hdr) - 71 sizeof(eid) - sizeof(type); 72 try 73 { 74 response = invoker.handle(hdrFields.pldm_type, hdrFields.command, 75 request, requestLen); 76 } 77 catch (const std::out_of_range& e) 78 { 79 uint8_t completion_code = PLDM_ERROR_UNSUPPORTED_PLDM_CMD; 80 response.resize(sizeof(pldm_msg_hdr)); 81 auto responseHdr = reinterpret_cast<pldm_msg_hdr*>(response.data()); 82 pldm_header_info header{}; 83 header.msg_type = PLDM_RESPONSE; 84 header.instance = hdrFields.instance; 85 header.pldm_type = hdrFields.pldm_type; 86 header.command = hdrFields.command; 87 auto result = pack_pldm_header(&header, responseHdr); 88 if (PLDM_SUCCESS != result) 89 { 90 std::cerr << "Failed adding response header \n"; 91 } 92 response.insert(response.end(), completion_code); 93 } 94 } 95 else 96 { 97 requester.markFree(eid, hdr->instance_id); 98 } 99 return response; 100 } 101 102 void printBuffer(const std::vector<uint8_t>& buffer) 103 { 104 std::ostringstream tempStream; 105 tempStream << "Buffer Data: "; 106 if (!buffer.empty()) 107 { 108 for (int byte : buffer) 109 { 110 tempStream << std::setfill('0') << std::setw(2) << std::hex << byte 111 << " "; 112 } 113 } 114 std::cout << tempStream.str().c_str() << std::endl; 115 } 116 117 void optionUsage(void) 118 { 119 std::cerr << "Usage: pldmd [options]\n"; 120 std::cerr << "Options:\n"; 121 std::cerr 122 << " --verbose=<0/1> 0 - Disable verbosity, 1 - Enable verbosity\n"; 123 std::cerr << "Defaulted settings: --verbose=0 \n"; 124 } 125 126 int main(int argc, char** argv) 127 { 128 129 bool verbose = false; 130 static struct option long_options[] = { 131 {"verbose", required_argument, 0, 'v'}, {0, 0, 0, 0}}; 132 133 auto argflag = getopt_long(argc, argv, "v:", long_options, nullptr); 134 switch (argflag) 135 { 136 case 'v': 137 switch (std::stoi(optarg)) 138 { 139 case 0: 140 verbose = false; 141 break; 142 case 1: 143 verbose = true; 144 break; 145 default: 146 optionUsage(); 147 break; 148 } 149 break; 150 default: 151 optionUsage(); 152 break; 153 } 154 155 /* Create local socket. */ 156 int returnCode = 0; 157 int sockfd = socket(AF_UNIX, SOCK_SEQPACKET, 0); 158 if (-1 == sockfd) 159 { 160 returnCode = -errno; 161 std::cerr << "Failed to create the socket, RC= " << returnCode << "\n"; 162 exit(EXIT_FAILURE); 163 } 164 165 auto event = Event::get_default(); 166 std::unique_ptr<pldm_pdr, decltype(&pldm_pdr_destroy)> pdrRepo( 167 pldm_pdr_init(), pldm_pdr_destroy); 168 std::unique_ptr<pldm_entity_association_tree, 169 decltype(&pldm_entity_association_tree_destroy)> 170 entityTree(pldm_entity_association_tree_init(), 171 pldm_entity_association_tree_destroy); 172 auto& bus = pldm::utils::DBusHandler::getBus(); 173 dbus_api::Requester dbusImplReq(bus, "/xyz/openbmc_project/pldm"); 174 std::unique_ptr<HostPDRHandler> hostPDRHandler; 175 std::unique_ptr<pldm::host_effecters::HostEffecterParser> 176 hostEffecterParser; 177 auto dbusHandler = std::make_unique<DBusHandler>(); 178 auto hostEID = pldm::utils::readHostEID(); 179 if (hostEID) 180 { 181 hostPDRHandler = std::make_unique<HostPDRHandler>( 182 sockfd, hostEID, event, pdrRepo.get(), entityTree.get(), 183 dbusImplReq); 184 hostEffecterParser = 185 std::make_unique<pldm::host_effecters::HostEffecterParser>( 186 &dbusImplReq, sockfd, pdrRepo.get(), dbusHandler.get(), 187 HOST_JSONS_DIR, verbose); 188 } 189 190 Invoker invoker{}; 191 invoker.registerHandler(PLDM_BASE, std::make_unique<base::Handler>()); 192 invoker.registerHandler(PLDM_BIOS, std::make_unique<bios::Handler>()); 193 auto fruHandler = std::make_unique<fru::Handler>( 194 FRU_JSONS_DIR, pdrRepo.get(), entityTree.get()); 195 // FRU table is built lazily when a FRU command or Get PDR command is 196 // handled. To enable building FRU table, the FRU handler is passed to the 197 // Platform handler. 198 invoker.registerHandler(PLDM_PLATFORM, 199 std::make_unique<platform::Handler>( 200 dbusHandler.get(), PDR_JSONS_DIR, 201 EVENTS_JSONS_DIR, pdrRepo.get(), 202 hostPDRHandler.get(), fruHandler.get(), true)); 203 invoker.registerHandler(PLDM_FRU, std::move(fruHandler)); 204 205 #ifdef OEM_IBM 206 invoker.registerHandler(PLDM_OEM, std::make_unique<oem_ibm::Handler>()); 207 #endif 208 209 pldm::utils::CustomFD socketFd(sockfd); 210 211 struct sockaddr_un addr 212 {}; 213 addr.sun_family = AF_UNIX; 214 const char path[] = "\0mctp-mux"; 215 memcpy(addr.sun_path, path, sizeof(path) - 1); 216 int result = connect(socketFd(), reinterpret_cast<struct sockaddr*>(&addr), 217 sizeof(path) + sizeof(addr.sun_family) - 1); 218 if (-1 == result) 219 { 220 returnCode = -errno; 221 std::cerr << "Failed to connect to the socket, RC= " << returnCode 222 << "\n"; 223 exit(EXIT_FAILURE); 224 } 225 226 result = write(socketFd(), &MCTP_MSG_TYPE_PLDM, sizeof(MCTP_MSG_TYPE_PLDM)); 227 if (-1 == result) 228 { 229 returnCode = -errno; 230 std::cerr << "Failed to send message type as pldm to mctp, RC= " 231 << returnCode << "\n"; 232 exit(EXIT_FAILURE); 233 } 234 235 dbus_api::Pdr dbusImplPdr(bus, "/xyz/openbmc_project/pldm", pdrRepo.get()); 236 sdbusplus::xyz::openbmc_project::PLDM::server::Event dbusImplEvent( 237 bus, "/xyz/openbmc_project/pldm"); 238 auto callback = [verbose, &invoker, &dbusImplReq](IO& /*io*/, int fd, 239 uint32_t revents) { 240 if (!(revents & EPOLLIN)) 241 { 242 return; 243 } 244 245 // Outgoing message. 246 struct iovec iov[2]{}; 247 248 // This structure contains the parameter information for the response 249 // message. 250 struct msghdr msg 251 {}; 252 253 int returnCode = 0; 254 ssize_t peekedLength = recv(fd, nullptr, 0, MSG_PEEK | MSG_TRUNC); 255 if (0 == peekedLength) 256 { 257 std::cerr << "Socket has been closed \n"; 258 } 259 else if (peekedLength <= -1) 260 { 261 returnCode = -errno; 262 std::cerr << "recv system call failed, RC= " << returnCode << "\n"; 263 } 264 else 265 { 266 std::vector<uint8_t> requestMsg(peekedLength); 267 auto recvDataLength = recv( 268 fd, static_cast<void*>(requestMsg.data()), peekedLength, 0); 269 if (recvDataLength == peekedLength) 270 { 271 if (verbose) 272 { 273 std::cout << "Received Msg" << std::endl; 274 printBuffer(requestMsg); 275 } 276 if (MCTP_MSG_TYPE_PLDM != requestMsg[1]) 277 { 278 // Skip this message and continue. 279 std::cerr << "Encountered Non-PLDM type message" 280 << "\n"; 281 } 282 else 283 { 284 // process message and send response 285 auto response = 286 processRxMsg(requestMsg, invoker, dbusImplReq); 287 if (!response.empty()) 288 { 289 if (verbose) 290 { 291 std::cout << "Sending Msg" << std::endl; 292 printBuffer(response); 293 } 294 295 iov[0].iov_base = &requestMsg[0]; 296 iov[0].iov_len = 297 sizeof(requestMsg[0]) + sizeof(requestMsg[1]); 298 iov[1].iov_base = response.data(); 299 iov[1].iov_len = response.size(); 300 301 msg.msg_iov = iov; 302 msg.msg_iovlen = sizeof(iov) / sizeof(iov[0]); 303 304 int result = sendmsg(fd, &msg, 0); 305 if (-1 == result) 306 { 307 returnCode = -errno; 308 std::cerr << "sendto system call failed, RC= " 309 << returnCode << "\n"; 310 } 311 } 312 } 313 } 314 else 315 { 316 std::cerr 317 << "Failure to read peeked length packet. peekedLength= " 318 << peekedLength << " recvDataLength=" << recvDataLength 319 << "\n"; 320 } 321 } 322 }; 323 324 bus.attach_event(event.get(), SD_EVENT_PRIORITY_NORMAL); 325 bus.request_name("xyz.openbmc_project.PLDM"); 326 IO io(event, socketFd(), EPOLLIN, std::move(callback)); 327 event.loop(); 328 329 result = shutdown(sockfd, SHUT_RDWR); 330 if (-1 == result) 331 { 332 returnCode = -errno; 333 std::cerr << "Failed to shutdown the socket, RC=" << returnCode << "\n"; 334 exit(EXIT_FAILURE); 335 } 336 exit(EXIT_FAILURE); 337 } 338