1 //===-- GDBRemoteCommunicationServer.cpp ------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include <errno.h> 11 12 #include "GDBRemoteCommunicationServer.h" 13 #include "lldb/Core/StreamGDBRemote.h" 14 15 // C Includes 16 // C++ Includes 17 // Other libraries and framework includes 18 #include "llvm/ADT/Triple.h" 19 #include "lldb/Interpreter/Args.h" 20 #include "lldb/Core/ConnectionFileDescriptor.h" 21 #include "lldb/Core/Log.h" 22 #include "lldb/Core/State.h" 23 #include "lldb/Core/StreamString.h" 24 #include "lldb/Host/Endian.h" 25 #include "lldb/Host/File.h" 26 #include "lldb/Host/Host.h" 27 #include "lldb/Host/TimeValue.h" 28 #include "lldb/Target/Platform.h" 29 #include "lldb/Target/Process.h" 30 31 // Project includes 32 #include "Utility/StringExtractorGDBRemote.h" 33 #include "ProcessGDBRemote.h" 34 #include "ProcessGDBRemoteLog.h" 35 36 using namespace lldb; 37 using namespace lldb_private; 38 39 //---------------------------------------------------------------------- 40 // GDBRemoteCommunicationServer constructor 41 //---------------------------------------------------------------------- 42 GDBRemoteCommunicationServer::GDBRemoteCommunicationServer(bool is_platform) : 43 GDBRemoteCommunication ("gdb-remote.server", "gdb-remote.server.rx_packet", is_platform), 44 m_platform_sp (Platform::GetDefaultPlatform ()), 45 m_async_thread (LLDB_INVALID_HOST_THREAD), 46 m_process_launch_info (), 47 m_process_launch_error (), 48 m_spawned_pids (), 49 m_spawned_pids_mutex (Mutex::eMutexTypeRecursive), 50 m_proc_infos (), 51 m_proc_infos_index (0), 52 m_port_map (), 53 m_port_offset(0) 54 { 55 } 56 57 GDBRemoteCommunicationServer::GDBRemoteCommunicationServer(bool is_platform, 58 const lldb::PlatformSP& platform_sp) : 59 GDBRemoteCommunication ("gdb-remote.server", "gdb-remote.server.rx_packet", is_platform), 60 m_platform_sp (platform_sp), 61 m_async_thread (LLDB_INVALID_HOST_THREAD), 62 m_process_launch_info (), 63 m_process_launch_error (), 64 m_spawned_pids (), 65 m_spawned_pids_mutex (Mutex::eMutexTypeRecursive), 66 m_proc_infos (), 67 m_proc_infos_index (0), 68 m_port_map (), 69 m_port_offset(0) 70 { 71 assert(platform_sp); 72 } 73 74 //---------------------------------------------------------------------- 75 // Destructor 76 //---------------------------------------------------------------------- 77 GDBRemoteCommunicationServer::~GDBRemoteCommunicationServer() 78 { 79 } 80 81 82 //void * 83 //GDBRemoteCommunicationServer::AsyncThread (void *arg) 84 //{ 85 // GDBRemoteCommunicationServer *server = (GDBRemoteCommunicationServer*) arg; 86 // 87 // Log *log;// (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 88 // if (log) 89 // log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %i) thread starting...", __FUNCTION__, arg, process->GetID()); 90 // 91 // StringExtractorGDBRemote packet; 92 // 93 // while () 94 // { 95 // if (packet. 96 // } 97 // 98 // if (log) 99 // log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %i) thread exiting...", __FUNCTION__, arg, process->GetID()); 100 // 101 // process->m_async_thread = LLDB_INVALID_HOST_THREAD; 102 // return NULL; 103 //} 104 // 105 bool 106 GDBRemoteCommunicationServer::GetPacketAndSendResponse (uint32_t timeout_usec, 107 Error &error, 108 bool &interrupt, 109 bool &quit) 110 { 111 StringExtractorGDBRemote packet; 112 PacketResult packet_result = WaitForPacketWithTimeoutMicroSecondsNoLock (packet, timeout_usec); 113 if (packet_result == PacketResult::Success) 114 { 115 const StringExtractorGDBRemote::ServerPacketType packet_type = packet.GetServerPacketType (); 116 switch (packet_type) 117 { 118 case StringExtractorGDBRemote::eServerPacketType_nack: 119 case StringExtractorGDBRemote::eServerPacketType_ack: 120 break; 121 122 case StringExtractorGDBRemote::eServerPacketType_invalid: 123 error.SetErrorString("invalid packet"); 124 quit = true; 125 break; 126 127 case StringExtractorGDBRemote::eServerPacketType_interrupt: 128 error.SetErrorString("interrupt received"); 129 interrupt = true; 130 break; 131 132 default: 133 case StringExtractorGDBRemote::eServerPacketType_unimplemented: 134 packet_result = SendUnimplementedResponse (packet.GetStringRef().c_str()); 135 break; 136 137 case StringExtractorGDBRemote::eServerPacketType_A: 138 packet_result = Handle_A (packet); 139 break; 140 141 case StringExtractorGDBRemote::eServerPacketType_qfProcessInfo: 142 packet_result = Handle_qfProcessInfo (packet); 143 break; 144 145 case StringExtractorGDBRemote::eServerPacketType_qsProcessInfo: 146 packet_result = Handle_qsProcessInfo (packet); 147 break; 148 149 case StringExtractorGDBRemote::eServerPacketType_qC: 150 packet_result = Handle_qC (packet); 151 break; 152 153 case StringExtractorGDBRemote::eServerPacketType_qHostInfo: 154 packet_result = Handle_qHostInfo (packet); 155 break; 156 157 case StringExtractorGDBRemote::eServerPacketType_qLaunchGDBServer: 158 packet_result = Handle_qLaunchGDBServer (packet); 159 break; 160 161 case StringExtractorGDBRemote::eServerPacketType_qKillSpawnedProcess: 162 packet_result = Handle_qKillSpawnedProcess (packet); 163 break; 164 165 case StringExtractorGDBRemote::eServerPacketType_k: 166 packet_result = Handle_k (packet); 167 break; 168 169 case StringExtractorGDBRemote::eServerPacketType_qLaunchSuccess: 170 packet_result = Handle_qLaunchSuccess (packet); 171 break; 172 173 case StringExtractorGDBRemote::eServerPacketType_qGroupName: 174 packet_result = Handle_qGroupName (packet); 175 break; 176 177 case StringExtractorGDBRemote::eServerPacketType_qProcessInfoPID: 178 packet_result = Handle_qProcessInfoPID (packet); 179 break; 180 181 case StringExtractorGDBRemote::eServerPacketType_qSpeedTest: 182 packet_result = Handle_qSpeedTest (packet); 183 break; 184 185 case StringExtractorGDBRemote::eServerPacketType_qUserName: 186 packet_result = Handle_qUserName (packet); 187 break; 188 189 case StringExtractorGDBRemote::eServerPacketType_qGetWorkingDir: 190 packet_result = Handle_qGetWorkingDir(packet); 191 break; 192 193 case StringExtractorGDBRemote::eServerPacketType_QEnvironment: 194 packet_result = Handle_QEnvironment (packet); 195 break; 196 197 case StringExtractorGDBRemote::eServerPacketType_QLaunchArch: 198 packet_result = Handle_QLaunchArch (packet); 199 break; 200 201 case StringExtractorGDBRemote::eServerPacketType_QSetDisableASLR: 202 packet_result = Handle_QSetDisableASLR (packet); 203 break; 204 205 case StringExtractorGDBRemote::eServerPacketType_QSetDetachOnError: 206 packet_result = Handle_QSetDetachOnError (packet); 207 break; 208 209 case StringExtractorGDBRemote::eServerPacketType_QSetSTDIN: 210 packet_result = Handle_QSetSTDIN (packet); 211 break; 212 213 case StringExtractorGDBRemote::eServerPacketType_QSetSTDOUT: 214 packet_result = Handle_QSetSTDOUT (packet); 215 break; 216 217 case StringExtractorGDBRemote::eServerPacketType_QSetSTDERR: 218 packet_result = Handle_QSetSTDERR (packet); 219 break; 220 221 case StringExtractorGDBRemote::eServerPacketType_QSetWorkingDir: 222 packet_result = Handle_QSetWorkingDir (packet); 223 break; 224 225 case StringExtractorGDBRemote::eServerPacketType_QStartNoAckMode: 226 packet_result = Handle_QStartNoAckMode (packet); 227 break; 228 229 case StringExtractorGDBRemote::eServerPacketType_qPlatform_mkdir: 230 packet_result = Handle_qPlatform_mkdir (packet); 231 break; 232 233 case StringExtractorGDBRemote::eServerPacketType_qPlatform_chmod: 234 packet_result = Handle_qPlatform_chmod (packet); 235 break; 236 237 case StringExtractorGDBRemote::eServerPacketType_qPlatform_shell: 238 packet_result = Handle_qPlatform_shell (packet); 239 break; 240 241 case StringExtractorGDBRemote::eServerPacketType_vFile_open: 242 packet_result = Handle_vFile_Open (packet); 243 break; 244 245 case StringExtractorGDBRemote::eServerPacketType_vFile_close: 246 packet_result = Handle_vFile_Close (packet); 247 break; 248 249 case StringExtractorGDBRemote::eServerPacketType_vFile_pread: 250 packet_result = Handle_vFile_pRead (packet); 251 break; 252 253 case StringExtractorGDBRemote::eServerPacketType_vFile_pwrite: 254 packet_result = Handle_vFile_pWrite (packet); 255 break; 256 257 case StringExtractorGDBRemote::eServerPacketType_vFile_size: 258 packet_result = Handle_vFile_Size (packet); 259 break; 260 261 case StringExtractorGDBRemote::eServerPacketType_vFile_mode: 262 packet_result = Handle_vFile_Mode (packet); 263 break; 264 265 case StringExtractorGDBRemote::eServerPacketType_vFile_exists: 266 packet_result = Handle_vFile_Exists (packet); 267 break; 268 269 case StringExtractorGDBRemote::eServerPacketType_vFile_stat: 270 packet_result = Handle_vFile_Stat (packet); 271 break; 272 273 case StringExtractorGDBRemote::eServerPacketType_vFile_md5: 274 packet_result = Handle_vFile_MD5 (packet); 275 break; 276 277 case StringExtractorGDBRemote::eServerPacketType_vFile_symlink: 278 packet_result = Handle_vFile_symlink (packet); 279 break; 280 281 case StringExtractorGDBRemote::eServerPacketType_vFile_unlink: 282 packet_result = Handle_vFile_unlink (packet); 283 break; 284 } 285 } 286 else 287 { 288 if (!IsConnected()) 289 { 290 error.SetErrorString("lost connection"); 291 quit = true; 292 } 293 else 294 { 295 error.SetErrorString("timeout"); 296 } 297 } 298 return packet_result == PacketResult::Success; 299 } 300 301 lldb_private::Error 302 GDBRemoteCommunicationServer::SetLaunchArguments (const char *const args[], int argc) 303 { 304 if ((argc < 1) || !args || !args[0] || !args[0][0]) 305 return lldb_private::Error ("%s: no process command line specified to launch", __FUNCTION__); 306 307 m_process_launch_info.SetArguments (const_cast<const char**> (args), true); 308 return lldb_private::Error (); 309 } 310 311 lldb_private::Error 312 GDBRemoteCommunicationServer::SetLaunchFlags (unsigned int launch_flags) 313 { 314 m_process_launch_info.GetFlags ().Set (launch_flags); 315 return lldb_private::Error (); 316 } 317 318 lldb_private::Error 319 GDBRemoteCommunicationServer::LaunchProcess () 320 { 321 if (!m_process_launch_info.GetArguments ().GetArgumentCount ()) 322 return lldb_private::Error ("%s: no process command line specified to launch", __FUNCTION__); 323 324 // specify the process monitor if not already set. This should 325 // generally be what happens since we need to reap started 326 // processes. 327 if (!m_process_launch_info.GetMonitorProcessCallback ()) 328 m_process_launch_info.SetMonitorProcessCallback(ReapDebuggedProcess, this, false); 329 330 lldb_private::Error error = m_platform_sp->LaunchProcess (m_process_launch_info); 331 if (!error.Success ()) 332 { 333 fprintf (stderr, "%s: failed to launch executable %s", __FUNCTION__, m_process_launch_info.GetArguments ().GetArgumentAtIndex (0)); 334 return error; 335 } 336 337 printf ("Launched '%s' as process %" PRIu64 "...\n", m_process_launch_info.GetArguments ().GetArgumentAtIndex (0), m_process_launch_info.GetProcessID()); 338 339 // add to list of spawned processes. On an lldb-gdbserver, we 340 // would expect there to be only one. 341 lldb::pid_t pid; 342 if ( (pid = m_process_launch_info.GetProcessID()) != LLDB_INVALID_PROCESS_ID ) 343 { 344 Mutex::Locker locker (m_spawned_pids_mutex); 345 m_spawned_pids.insert(pid); 346 } 347 348 return error; 349 } 350 351 GDBRemoteCommunication::PacketResult 352 GDBRemoteCommunicationServer::SendUnimplementedResponse (const char *) 353 { 354 // TODO: Log the packet we aren't handling... 355 return SendPacketNoLock ("", 0); 356 } 357 358 GDBRemoteCommunication::PacketResult 359 GDBRemoteCommunicationServer::SendErrorResponse (uint8_t err) 360 { 361 char packet[16]; 362 int packet_len = ::snprintf (packet, sizeof(packet), "E%2.2x", err); 363 assert (packet_len < (int)sizeof(packet)); 364 return SendPacketNoLock (packet, packet_len); 365 } 366 367 368 GDBRemoteCommunication::PacketResult 369 GDBRemoteCommunicationServer::SendOKResponse () 370 { 371 return SendPacketNoLock ("OK", 2); 372 } 373 374 bool 375 GDBRemoteCommunicationServer::HandshakeWithClient(Error *error_ptr) 376 { 377 return GetAck() == PacketResult::Success; 378 } 379 380 GDBRemoteCommunication::PacketResult 381 GDBRemoteCommunicationServer::Handle_qHostInfo (StringExtractorGDBRemote &packet) 382 { 383 StreamString response; 384 385 // $cputype:16777223;cpusubtype:3;ostype:Darwin;vendor:apple;endian:little;ptrsize:8;#00 386 387 ArchSpec host_arch (Host::GetArchitecture ()); 388 const llvm::Triple &host_triple = host_arch.GetTriple(); 389 response.PutCString("triple:"); 390 response.PutCStringAsRawHex8(host_triple.getTriple().c_str()); 391 response.Printf (";ptrsize:%u;",host_arch.GetAddressByteSize()); 392 393 const char* distribution_id = host_arch.GetDistributionId ().AsCString (); 394 if (distribution_id) 395 { 396 response.PutCString("distribution_id:"); 397 response.PutCStringAsRawHex8(distribution_id); 398 response.PutCString(";"); 399 } 400 401 uint32_t cpu = host_arch.GetMachOCPUType(); 402 uint32_t sub = host_arch.GetMachOCPUSubType(); 403 if (cpu != LLDB_INVALID_CPUTYPE) 404 response.Printf ("cputype:%u;", cpu); 405 if (sub != LLDB_INVALID_CPUTYPE) 406 response.Printf ("cpusubtype:%u;", sub); 407 408 if (cpu == ArchSpec::kCore_arm_any) 409 response.Printf("watchpoint_exceptions_received:before;"); // On armv7 we use "synchronous" watchpoints which means the exception is delivered before the instruction executes. 410 else 411 response.Printf("watchpoint_exceptions_received:after;"); 412 413 switch (lldb::endian::InlHostByteOrder()) 414 { 415 case eByteOrderBig: response.PutCString ("endian:big;"); break; 416 case eByteOrderLittle: response.PutCString ("endian:little;"); break; 417 case eByteOrderPDP: response.PutCString ("endian:pdp;"); break; 418 default: response.PutCString ("endian:unknown;"); break; 419 } 420 421 uint32_t major = UINT32_MAX; 422 uint32_t minor = UINT32_MAX; 423 uint32_t update = UINT32_MAX; 424 if (Host::GetOSVersion (major, minor, update)) 425 { 426 if (major != UINT32_MAX) 427 { 428 response.Printf("os_version:%u", major); 429 if (minor != UINT32_MAX) 430 { 431 response.Printf(".%u", minor); 432 if (update != UINT32_MAX) 433 response.Printf(".%u", update); 434 } 435 response.PutChar(';'); 436 } 437 } 438 439 std::string s; 440 if (Host::GetOSBuildString (s)) 441 { 442 response.PutCString ("os_build:"); 443 response.PutCStringAsRawHex8(s.c_str()); 444 response.PutChar(';'); 445 } 446 if (Host::GetOSKernelDescription (s)) 447 { 448 response.PutCString ("os_kernel:"); 449 response.PutCStringAsRawHex8(s.c_str()); 450 response.PutChar(';'); 451 } 452 #if defined(__APPLE__) 453 454 #if defined(__arm__) || defined(__arm64__) 455 // For iOS devices, we are connected through a USB Mux so we never pretend 456 // to actually have a hostname as far as the remote lldb that is connecting 457 // to this lldb-platform is concerned 458 response.PutCString ("hostname:"); 459 response.PutCStringAsRawHex8("127.0.0.1"); 460 response.PutChar(';'); 461 #else // #if defined(__arm__) || defined(__arm64__) 462 if (Host::GetHostname (s)) 463 { 464 response.PutCString ("hostname:"); 465 response.PutCStringAsRawHex8(s.c_str()); 466 response.PutChar(';'); 467 } 468 #endif // #if defined(__arm__) || defined(__arm64__) 469 470 #else // #if defined(__APPLE__) 471 if (Host::GetHostname (s)) 472 { 473 response.PutCString ("hostname:"); 474 response.PutCStringAsRawHex8(s.c_str()); 475 response.PutChar(';'); 476 } 477 #endif // #if defined(__APPLE__) 478 479 return SendPacketNoLock (response.GetData(), response.GetSize()); 480 } 481 482 static void 483 CreateProcessInfoResponse (const ProcessInstanceInfo &proc_info, StreamString &response) 484 { 485 response.Printf ("pid:%" PRIu64 ";ppid:%" PRIu64 ";uid:%i;gid:%i;euid:%i;egid:%i;", 486 proc_info.GetProcessID(), 487 proc_info.GetParentProcessID(), 488 proc_info.GetUserID(), 489 proc_info.GetGroupID(), 490 proc_info.GetEffectiveUserID(), 491 proc_info.GetEffectiveGroupID()); 492 response.PutCString ("name:"); 493 response.PutCStringAsRawHex8(proc_info.GetName()); 494 response.PutChar(';'); 495 const ArchSpec &proc_arch = proc_info.GetArchitecture(); 496 if (proc_arch.IsValid()) 497 { 498 const llvm::Triple &proc_triple = proc_arch.GetTriple(); 499 response.PutCString("triple:"); 500 response.PutCStringAsRawHex8(proc_triple.getTriple().c_str()); 501 response.PutChar(';'); 502 } 503 } 504 505 GDBRemoteCommunication::PacketResult 506 GDBRemoteCommunicationServer::Handle_qProcessInfoPID (StringExtractorGDBRemote &packet) 507 { 508 // Packet format: "qProcessInfoPID:%i" where %i is the pid 509 packet.SetFilePos(::strlen ("qProcessInfoPID:")); 510 lldb::pid_t pid = packet.GetU32 (LLDB_INVALID_PROCESS_ID); 511 if (pid != LLDB_INVALID_PROCESS_ID) 512 { 513 ProcessInstanceInfo proc_info; 514 if (Host::GetProcessInfo(pid, proc_info)) 515 { 516 StreamString response; 517 CreateProcessInfoResponse (proc_info, response); 518 return SendPacketNoLock (response.GetData(), response.GetSize()); 519 } 520 } 521 return SendErrorResponse (1); 522 } 523 524 GDBRemoteCommunication::PacketResult 525 GDBRemoteCommunicationServer::Handle_qfProcessInfo (StringExtractorGDBRemote &packet) 526 { 527 m_proc_infos_index = 0; 528 m_proc_infos.Clear(); 529 530 ProcessInstanceInfoMatch match_info; 531 packet.SetFilePos(::strlen ("qfProcessInfo")); 532 if (packet.GetChar() == ':') 533 { 534 535 std::string key; 536 std::string value; 537 while (packet.GetNameColonValue(key, value)) 538 { 539 bool success = true; 540 if (key.compare("name") == 0) 541 { 542 StringExtractor extractor; 543 extractor.GetStringRef().swap(value); 544 extractor.GetHexByteString (value); 545 match_info.GetProcessInfo().GetExecutableFile().SetFile(value.c_str(), false); 546 } 547 else if (key.compare("name_match") == 0) 548 { 549 if (value.compare("equals") == 0) 550 { 551 match_info.SetNameMatchType (eNameMatchEquals); 552 } 553 else if (value.compare("starts_with") == 0) 554 { 555 match_info.SetNameMatchType (eNameMatchStartsWith); 556 } 557 else if (value.compare("ends_with") == 0) 558 { 559 match_info.SetNameMatchType (eNameMatchEndsWith); 560 } 561 else if (value.compare("contains") == 0) 562 { 563 match_info.SetNameMatchType (eNameMatchContains); 564 } 565 else if (value.compare("regex") == 0) 566 { 567 match_info.SetNameMatchType (eNameMatchRegularExpression); 568 } 569 else 570 { 571 success = false; 572 } 573 } 574 else if (key.compare("pid") == 0) 575 { 576 match_info.GetProcessInfo().SetProcessID (Args::StringToUInt32(value.c_str(), LLDB_INVALID_PROCESS_ID, 0, &success)); 577 } 578 else if (key.compare("parent_pid") == 0) 579 { 580 match_info.GetProcessInfo().SetParentProcessID (Args::StringToUInt32(value.c_str(), LLDB_INVALID_PROCESS_ID, 0, &success)); 581 } 582 else if (key.compare("uid") == 0) 583 { 584 match_info.GetProcessInfo().SetUserID (Args::StringToUInt32(value.c_str(), UINT32_MAX, 0, &success)); 585 } 586 else if (key.compare("gid") == 0) 587 { 588 match_info.GetProcessInfo().SetGroupID (Args::StringToUInt32(value.c_str(), UINT32_MAX, 0, &success)); 589 } 590 else if (key.compare("euid") == 0) 591 { 592 match_info.GetProcessInfo().SetEffectiveUserID (Args::StringToUInt32(value.c_str(), UINT32_MAX, 0, &success)); 593 } 594 else if (key.compare("egid") == 0) 595 { 596 match_info.GetProcessInfo().SetEffectiveGroupID (Args::StringToUInt32(value.c_str(), UINT32_MAX, 0, &success)); 597 } 598 else if (key.compare("all_users") == 0) 599 { 600 match_info.SetMatchAllUsers(Args::StringToBoolean(value.c_str(), false, &success)); 601 } 602 else if (key.compare("triple") == 0) 603 { 604 match_info.GetProcessInfo().GetArchitecture().SetTriple (value.c_str(), NULL); 605 } 606 else 607 { 608 success = false; 609 } 610 611 if (!success) 612 return SendErrorResponse (2); 613 } 614 } 615 616 if (Host::FindProcesses (match_info, m_proc_infos)) 617 { 618 // We found something, return the first item by calling the get 619 // subsequent process info packet handler... 620 return Handle_qsProcessInfo (packet); 621 } 622 return SendErrorResponse (3); 623 } 624 625 GDBRemoteCommunication::PacketResult 626 GDBRemoteCommunicationServer::Handle_qsProcessInfo (StringExtractorGDBRemote &packet) 627 { 628 if (m_proc_infos_index < m_proc_infos.GetSize()) 629 { 630 StreamString response; 631 CreateProcessInfoResponse (m_proc_infos.GetProcessInfoAtIndex(m_proc_infos_index), response); 632 ++m_proc_infos_index; 633 return SendPacketNoLock (response.GetData(), response.GetSize()); 634 } 635 return SendErrorResponse (4); 636 } 637 638 GDBRemoteCommunication::PacketResult 639 GDBRemoteCommunicationServer::Handle_qUserName (StringExtractorGDBRemote &packet) 640 { 641 // Packet format: "qUserName:%i" where %i is the uid 642 packet.SetFilePos(::strlen ("qUserName:")); 643 uint32_t uid = packet.GetU32 (UINT32_MAX); 644 if (uid != UINT32_MAX) 645 { 646 std::string name; 647 if (Host::GetUserName (uid, name)) 648 { 649 StreamString response; 650 response.PutCStringAsRawHex8 (name.c_str()); 651 return SendPacketNoLock (response.GetData(), response.GetSize()); 652 } 653 } 654 return SendErrorResponse (5); 655 656 } 657 658 GDBRemoteCommunication::PacketResult 659 GDBRemoteCommunicationServer::Handle_qGroupName (StringExtractorGDBRemote &packet) 660 { 661 // Packet format: "qGroupName:%i" where %i is the gid 662 packet.SetFilePos(::strlen ("qGroupName:")); 663 uint32_t gid = packet.GetU32 (UINT32_MAX); 664 if (gid != UINT32_MAX) 665 { 666 std::string name; 667 if (Host::GetGroupName (gid, name)) 668 { 669 StreamString response; 670 response.PutCStringAsRawHex8 (name.c_str()); 671 return SendPacketNoLock (response.GetData(), response.GetSize()); 672 } 673 } 674 return SendErrorResponse (6); 675 } 676 677 GDBRemoteCommunication::PacketResult 678 GDBRemoteCommunicationServer::Handle_qSpeedTest (StringExtractorGDBRemote &packet) 679 { 680 packet.SetFilePos(::strlen ("qSpeedTest:")); 681 682 std::string key; 683 std::string value; 684 bool success = packet.GetNameColonValue(key, value); 685 if (success && key.compare("response_size") == 0) 686 { 687 uint32_t response_size = Args::StringToUInt32(value.c_str(), 0, 0, &success); 688 if (success) 689 { 690 if (response_size == 0) 691 return SendOKResponse(); 692 StreamString response; 693 uint32_t bytes_left = response_size; 694 response.PutCString("data:"); 695 while (bytes_left > 0) 696 { 697 if (bytes_left >= 26) 698 { 699 response.PutCString("ABCDEFGHIJKLMNOPQRSTUVWXYZ"); 700 bytes_left -= 26; 701 } 702 else 703 { 704 response.Printf ("%*.*s;", bytes_left, bytes_left, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"); 705 bytes_left = 0; 706 } 707 } 708 return SendPacketNoLock (response.GetData(), response.GetSize()); 709 } 710 } 711 return SendErrorResponse (7); 712 } 713 714 // 715 //static bool 716 //WaitForProcessToSIGSTOP (const lldb::pid_t pid, const int timeout_in_seconds) 717 //{ 718 // const int time_delta_usecs = 100000; 719 // const int num_retries = timeout_in_seconds/time_delta_usecs; 720 // for (int i=0; i<num_retries; i++) 721 // { 722 // struct proc_bsdinfo bsd_info; 723 // int error = ::proc_pidinfo (pid, PROC_PIDTBSDINFO, 724 // (uint64_t) 0, 725 // &bsd_info, 726 // PROC_PIDTBSDINFO_SIZE); 727 // 728 // switch (error) 729 // { 730 // case EINVAL: 731 // case ENOTSUP: 732 // case ESRCH: 733 // case EPERM: 734 // return false; 735 // 736 // default: 737 // break; 738 // 739 // case 0: 740 // if (bsd_info.pbi_status == SSTOP) 741 // return true; 742 // } 743 // ::usleep (time_delta_usecs); 744 // } 745 // return false; 746 //} 747 748 GDBRemoteCommunication::PacketResult 749 GDBRemoteCommunicationServer::Handle_A (StringExtractorGDBRemote &packet) 750 { 751 // The 'A' packet is the most over designed packet ever here with 752 // redundant argument indexes, redundant argument lengths and needed hex 753 // encoded argument string values. Really all that is needed is a comma 754 // separated hex encoded argument value list, but we will stay true to the 755 // documented version of the 'A' packet here... 756 757 packet.SetFilePos(1); // Skip the 'A' 758 bool success = true; 759 while (success && packet.GetBytesLeft() > 0) 760 { 761 // Decode the decimal argument string length. This length is the 762 // number of hex nibbles in the argument string value. 763 const uint32_t arg_len = packet.GetU32(UINT32_MAX); 764 if (arg_len == UINT32_MAX) 765 success = false; 766 else 767 { 768 // Make sure the argument hex string length is followed by a comma 769 if (packet.GetChar() != ',') 770 success = false; 771 else 772 { 773 // Decode the argument index. We ignore this really becuase 774 // who would really send down the arguments in a random order??? 775 const uint32_t arg_idx = packet.GetU32(UINT32_MAX); 776 if (arg_idx == UINT32_MAX) 777 success = false; 778 else 779 { 780 // Make sure the argument index is followed by a comma 781 if (packet.GetChar() != ',') 782 success = false; 783 else 784 { 785 // Decode the argument string value from hex bytes 786 // back into a UTF8 string and make sure the length 787 // matches the one supplied in the packet 788 std::string arg; 789 if (packet.GetHexByteString(arg) != (arg_len / 2)) 790 success = false; 791 else 792 { 793 // If there are any bytes lft 794 if (packet.GetBytesLeft()) 795 { 796 if (packet.GetChar() != ',') 797 success = false; 798 } 799 800 if (success) 801 { 802 if (arg_idx == 0) 803 m_process_launch_info.GetExecutableFile().SetFile(arg.c_str(), false); 804 m_process_launch_info.GetArguments().AppendArgument(arg.c_str()); 805 } 806 } 807 } 808 } 809 } 810 } 811 } 812 813 if (success) 814 { 815 // FIXME: remove linux restriction once eLaunchFlagDebug is supported 816 #if !defined (__linux__) 817 m_process_launch_info.GetFlags().Set (eLaunchFlagDebug); 818 #endif 819 m_process_launch_error = LaunchProcess (); 820 if (m_process_launch_info.GetProcessID() != LLDB_INVALID_PROCESS_ID) 821 { 822 return SendOKResponse (); 823 } 824 } 825 return SendErrorResponse (8); 826 } 827 828 GDBRemoteCommunication::PacketResult 829 GDBRemoteCommunicationServer::Handle_qC (StringExtractorGDBRemote &packet) 830 { 831 lldb::pid_t pid = m_process_launch_info.GetProcessID(); 832 StreamString response; 833 response.Printf("QC%" PRIx64, pid); 834 if (m_is_platform) 835 { 836 // If we launch a process and this GDB server is acting as a platform, 837 // then we need to clear the process launch state so we can start 838 // launching another process. In order to launch a process a bunch or 839 // packets need to be sent: environment packets, working directory, 840 // disable ASLR, and many more settings. When we launch a process we 841 // then need to know when to clear this information. Currently we are 842 // selecting the 'qC' packet as that packet which seems to make the most 843 // sense. 844 if (pid != LLDB_INVALID_PROCESS_ID) 845 { 846 m_process_launch_info.Clear(); 847 } 848 } 849 return SendPacketNoLock (response.GetData(), response.GetSize()); 850 } 851 852 bool 853 GDBRemoteCommunicationServer::DebugserverProcessReaped (lldb::pid_t pid) 854 { 855 Mutex::Locker locker (m_spawned_pids_mutex); 856 FreePortForProcess(pid); 857 return m_spawned_pids.erase(pid) > 0; 858 } 859 bool 860 GDBRemoteCommunicationServer::ReapDebugserverProcess (void *callback_baton, 861 lldb::pid_t pid, 862 bool exited, 863 int signal, // Zero for no signal 864 int status) // Exit value of process if signal is zero 865 { 866 GDBRemoteCommunicationServer *server = (GDBRemoteCommunicationServer *)callback_baton; 867 server->DebugserverProcessReaped (pid); 868 return true; 869 } 870 871 bool 872 GDBRemoteCommunicationServer::DebuggedProcessReaped (lldb::pid_t pid) 873 { 874 // reap a process that we were debugging (but not debugserver) 875 Mutex::Locker locker (m_spawned_pids_mutex); 876 return m_spawned_pids.erase(pid) > 0; 877 } 878 879 bool 880 GDBRemoteCommunicationServer::ReapDebuggedProcess (void *callback_baton, 881 lldb::pid_t pid, 882 bool exited, 883 int signal, // Zero for no signal 884 int status) // Exit value of process if signal is zero 885 { 886 GDBRemoteCommunicationServer *server = (GDBRemoteCommunicationServer *)callback_baton; 887 server->DebuggedProcessReaped (pid); 888 return true; 889 } 890 891 GDBRemoteCommunication::PacketResult 892 GDBRemoteCommunicationServer::Handle_qLaunchGDBServer (StringExtractorGDBRemote &packet) 893 { 894 #ifdef _WIN32 895 return SendErrorResponse(9); 896 #else 897 // Spawn a local debugserver as a platform so we can then attach or launch 898 // a process... 899 900 if (m_is_platform) 901 { 902 // Sleep and wait a bit for debugserver to start to listen... 903 ConnectionFileDescriptor file_conn; 904 Error error; 905 std::string hostname; 906 // TODO: /tmp/ should not be hardcoded. User might want to override /tmp 907 // with the TMPDIR environnement variable 908 packet.SetFilePos(::strlen ("qLaunchGDBServer;")); 909 std::string name; 910 std::string value; 911 uint16_t port = UINT16_MAX; 912 while (packet.GetNameColonValue(name, value)) 913 { 914 if (name.compare ("host") == 0) 915 hostname.swap(value); 916 else if (name.compare ("port") == 0) 917 port = Args::StringToUInt32(value.c_str(), 0, 0); 918 } 919 if (port == UINT16_MAX) 920 port = GetNextAvailablePort(); 921 922 // Spawn a new thread to accept the port that gets bound after 923 // binding to port 0 (zero). 924 925 if (error.Success()) 926 { 927 // Spawn a debugserver and try to get the port it listens to. 928 ProcessLaunchInfo debugserver_launch_info; 929 if (hostname.empty()) 930 hostname = "127.0.0.1"; 931 Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM)); 932 if (log) 933 log->Printf("Launching debugserver with: %s:%u...\n", hostname.c_str(), port); 934 935 debugserver_launch_info.SetMonitorProcessCallback(ReapDebugserverProcess, this, false); 936 937 error = StartDebugserverProcess (hostname.empty() ? NULL : hostname.c_str(), 938 port, 939 debugserver_launch_info, 940 port); 941 942 lldb::pid_t debugserver_pid = debugserver_launch_info.GetProcessID(); 943 944 945 if (debugserver_pid != LLDB_INVALID_PROCESS_ID) 946 { 947 Mutex::Locker locker (m_spawned_pids_mutex); 948 m_spawned_pids.insert(debugserver_pid); 949 if (port > 0) 950 AssociatePortWithProcess(port, debugserver_pid); 951 } 952 else 953 { 954 if (port > 0) 955 FreePort (port); 956 } 957 958 if (error.Success()) 959 { 960 char response[256]; 961 const int response_len = ::snprintf (response, sizeof(response), "pid:%" PRIu64 ";port:%u;", debugserver_pid, port + m_port_offset); 962 assert (response_len < (int)sizeof(response)); 963 PacketResult packet_result = SendPacketNoLock (response, response_len); 964 965 if (packet_result != PacketResult::Success) 966 { 967 if (debugserver_pid != LLDB_INVALID_PROCESS_ID) 968 ::kill (debugserver_pid, SIGINT); 969 } 970 return packet_result; 971 } 972 } 973 } 974 return SendErrorResponse (9); 975 #endif 976 } 977 978 bool 979 GDBRemoteCommunicationServer::KillSpawnedProcess (lldb::pid_t pid) 980 { 981 // make sure we know about this process 982 { 983 Mutex::Locker locker (m_spawned_pids_mutex); 984 if (m_spawned_pids.find(pid) == m_spawned_pids.end()) 985 return false; 986 } 987 988 // first try a SIGTERM (standard kill) 989 Host::Kill (pid, SIGTERM); 990 991 // check if that worked 992 for (size_t i=0; i<10; ++i) 993 { 994 { 995 Mutex::Locker locker (m_spawned_pids_mutex); 996 if (m_spawned_pids.find(pid) == m_spawned_pids.end()) 997 { 998 // it is now killed 999 return true; 1000 } 1001 } 1002 usleep (10000); 1003 } 1004 1005 // check one more time after the final usleep 1006 { 1007 Mutex::Locker locker (m_spawned_pids_mutex); 1008 if (m_spawned_pids.find(pid) == m_spawned_pids.end()) 1009 return true; 1010 } 1011 1012 // the launched process still lives. Now try killling it again, 1013 // this time with an unblockable signal. 1014 Host::Kill (pid, SIGKILL); 1015 1016 for (size_t i=0; i<10; ++i) 1017 { 1018 { 1019 Mutex::Locker locker (m_spawned_pids_mutex); 1020 if (m_spawned_pids.find(pid) == m_spawned_pids.end()) 1021 { 1022 // it is now killed 1023 return true; 1024 } 1025 } 1026 usleep (10000); 1027 } 1028 1029 // check one more time after the final usleep 1030 // Scope for locker 1031 { 1032 Mutex::Locker locker (m_spawned_pids_mutex); 1033 if (m_spawned_pids.find(pid) == m_spawned_pids.end()) 1034 return true; 1035 } 1036 1037 // no luck - the process still lives 1038 return false; 1039 } 1040 1041 GDBRemoteCommunication::PacketResult 1042 GDBRemoteCommunicationServer::Handle_qKillSpawnedProcess (StringExtractorGDBRemote &packet) 1043 { 1044 packet.SetFilePos(::strlen ("qKillSpawnedProcess:")); 1045 1046 lldb::pid_t pid = packet.GetU64(LLDB_INVALID_PROCESS_ID); 1047 1048 // verify that we know anything about this pid. 1049 // Scope for locker 1050 { 1051 Mutex::Locker locker (m_spawned_pids_mutex); 1052 if (m_spawned_pids.find(pid) == m_spawned_pids.end()) 1053 { 1054 // not a pid we know about 1055 return SendErrorResponse (10); 1056 } 1057 } 1058 1059 // go ahead and attempt to kill the spawned process 1060 if (KillSpawnedProcess (pid)) 1061 return SendOKResponse (); 1062 else 1063 return SendErrorResponse (11); 1064 } 1065 1066 GDBRemoteCommunication::PacketResult 1067 GDBRemoteCommunicationServer::Handle_k (StringExtractorGDBRemote &packet) 1068 { 1069 // ignore for now if we're lldb_platform 1070 if (m_is_platform) 1071 return SendUnimplementedResponse (packet.GetStringRef().c_str()); 1072 1073 // shutdown all spawned processes 1074 std::set<lldb::pid_t> spawned_pids_copy; 1075 1076 // copy pids 1077 { 1078 Mutex::Locker locker (m_spawned_pids_mutex); 1079 spawned_pids_copy.insert (m_spawned_pids.begin (), m_spawned_pids.end ()); 1080 } 1081 1082 // nuke the spawned processes 1083 for (auto it = spawned_pids_copy.begin (); it != spawned_pids_copy.end (); ++it) 1084 { 1085 lldb::pid_t spawned_pid = *it; 1086 if (!KillSpawnedProcess (spawned_pid)) 1087 { 1088 fprintf (stderr, "%s: failed to kill spawned pid %" PRIu64 ", ignoring.\n", __FUNCTION__, spawned_pid); 1089 } 1090 } 1091 1092 // TODO figure out how to shut down gracefully at this point 1093 return SendOKResponse (); 1094 } 1095 1096 GDBRemoteCommunication::PacketResult 1097 GDBRemoteCommunicationServer::Handle_qLaunchSuccess (StringExtractorGDBRemote &packet) 1098 { 1099 if (m_process_launch_error.Success()) 1100 return SendOKResponse(); 1101 StreamString response; 1102 response.PutChar('E'); 1103 response.PutCString(m_process_launch_error.AsCString("<unknown error>")); 1104 return SendPacketNoLock (response.GetData(), response.GetSize()); 1105 } 1106 1107 GDBRemoteCommunication::PacketResult 1108 GDBRemoteCommunicationServer::Handle_QEnvironment (StringExtractorGDBRemote &packet) 1109 { 1110 packet.SetFilePos(::strlen ("QEnvironment:")); 1111 const uint32_t bytes_left = packet.GetBytesLeft(); 1112 if (bytes_left > 0) 1113 { 1114 m_process_launch_info.GetEnvironmentEntries ().AppendArgument (packet.Peek()); 1115 return SendOKResponse (); 1116 } 1117 return SendErrorResponse (12); 1118 } 1119 1120 GDBRemoteCommunication::PacketResult 1121 GDBRemoteCommunicationServer::Handle_QLaunchArch (StringExtractorGDBRemote &packet) 1122 { 1123 packet.SetFilePos(::strlen ("QLaunchArch:")); 1124 const uint32_t bytes_left = packet.GetBytesLeft(); 1125 if (bytes_left > 0) 1126 { 1127 const char* arch_triple = packet.Peek(); 1128 ArchSpec arch_spec(arch_triple,NULL); 1129 m_process_launch_info.SetArchitecture(arch_spec); 1130 return SendOKResponse(); 1131 } 1132 return SendErrorResponse(13); 1133 } 1134 1135 GDBRemoteCommunication::PacketResult 1136 GDBRemoteCommunicationServer::Handle_QSetDisableASLR (StringExtractorGDBRemote &packet) 1137 { 1138 packet.SetFilePos(::strlen ("QSetDisableASLR:")); 1139 if (packet.GetU32(0)) 1140 m_process_launch_info.GetFlags().Set (eLaunchFlagDisableASLR); 1141 else 1142 m_process_launch_info.GetFlags().Clear (eLaunchFlagDisableASLR); 1143 return SendOKResponse (); 1144 } 1145 1146 GDBRemoteCommunication::PacketResult 1147 GDBRemoteCommunicationServer::Handle_QSetDetachOnError (StringExtractorGDBRemote &packet) 1148 { 1149 packet.SetFilePos(::strlen ("QSetDetachOnError:")); 1150 if (packet.GetU32(0)) 1151 m_process_launch_info.GetFlags().Set (eLaunchFlagDetachOnError); 1152 else 1153 m_process_launch_info.GetFlags().Clear (eLaunchFlagDetachOnError); 1154 return SendOKResponse (); 1155 } 1156 1157 GDBRemoteCommunication::PacketResult 1158 GDBRemoteCommunicationServer::Handle_QSetWorkingDir (StringExtractorGDBRemote &packet) 1159 { 1160 packet.SetFilePos(::strlen ("QSetWorkingDir:")); 1161 std::string path; 1162 packet.GetHexByteString(path); 1163 if (m_is_platform) 1164 { 1165 #ifdef _WIN32 1166 // Not implemented on Windows 1167 return SendUnimplementedResponse("GDBRemoteCommunicationServer::Handle_QSetWorkingDir unimplemented"); 1168 #else 1169 // If this packet is sent to a platform, then change the current working directory 1170 if (::chdir(path.c_str()) != 0) 1171 return SendErrorResponse(errno); 1172 #endif 1173 } 1174 else 1175 { 1176 m_process_launch_info.SwapWorkingDirectory (path); 1177 } 1178 return SendOKResponse (); 1179 } 1180 1181 GDBRemoteCommunication::PacketResult 1182 GDBRemoteCommunicationServer::Handle_qGetWorkingDir (StringExtractorGDBRemote &packet) 1183 { 1184 StreamString response; 1185 1186 if (m_is_platform) 1187 { 1188 // If this packet is sent to a platform, then change the current working directory 1189 char cwd[PATH_MAX]; 1190 if (getcwd(cwd, sizeof(cwd)) == NULL) 1191 { 1192 return SendErrorResponse(errno); 1193 } 1194 else 1195 { 1196 response.PutBytesAsRawHex8(cwd, strlen(cwd)); 1197 return SendPacketNoLock(response.GetData(), response.GetSize()); 1198 } 1199 } 1200 else 1201 { 1202 const char *working_dir = m_process_launch_info.GetWorkingDirectory(); 1203 if (working_dir && working_dir[0]) 1204 { 1205 response.PutBytesAsRawHex8(working_dir, strlen(working_dir)); 1206 return SendPacketNoLock(response.GetData(), response.GetSize()); 1207 } 1208 else 1209 { 1210 return SendErrorResponse(14); 1211 } 1212 } 1213 } 1214 1215 GDBRemoteCommunication::PacketResult 1216 GDBRemoteCommunicationServer::Handle_QSetSTDIN (StringExtractorGDBRemote &packet) 1217 { 1218 packet.SetFilePos(::strlen ("QSetSTDIN:")); 1219 ProcessLaunchInfo::FileAction file_action; 1220 std::string path; 1221 packet.GetHexByteString(path); 1222 const bool read = false; 1223 const bool write = true; 1224 if (file_action.Open(STDIN_FILENO, path.c_str(), read, write)) 1225 { 1226 m_process_launch_info.AppendFileAction(file_action); 1227 return SendOKResponse (); 1228 } 1229 return SendErrorResponse (15); 1230 } 1231 1232 GDBRemoteCommunication::PacketResult 1233 GDBRemoteCommunicationServer::Handle_QSetSTDOUT (StringExtractorGDBRemote &packet) 1234 { 1235 packet.SetFilePos(::strlen ("QSetSTDOUT:")); 1236 ProcessLaunchInfo::FileAction file_action; 1237 std::string path; 1238 packet.GetHexByteString(path); 1239 const bool read = true; 1240 const bool write = false; 1241 if (file_action.Open(STDOUT_FILENO, path.c_str(), read, write)) 1242 { 1243 m_process_launch_info.AppendFileAction(file_action); 1244 return SendOKResponse (); 1245 } 1246 return SendErrorResponse (16); 1247 } 1248 1249 GDBRemoteCommunication::PacketResult 1250 GDBRemoteCommunicationServer::Handle_QSetSTDERR (StringExtractorGDBRemote &packet) 1251 { 1252 packet.SetFilePos(::strlen ("QSetSTDERR:")); 1253 ProcessLaunchInfo::FileAction file_action; 1254 std::string path; 1255 packet.GetHexByteString(path); 1256 const bool read = true; 1257 const bool write = false; 1258 if (file_action.Open(STDERR_FILENO, path.c_str(), read, write)) 1259 { 1260 m_process_launch_info.AppendFileAction(file_action); 1261 return SendOKResponse (); 1262 } 1263 return SendErrorResponse (17); 1264 } 1265 1266 GDBRemoteCommunication::PacketResult 1267 GDBRemoteCommunicationServer::Handle_QStartNoAckMode (StringExtractorGDBRemote &packet) 1268 { 1269 // Send response first before changing m_send_acks to we ack this packet 1270 PacketResult packet_result = SendOKResponse (); 1271 m_send_acks = false; 1272 return packet_result; 1273 } 1274 1275 GDBRemoteCommunication::PacketResult 1276 GDBRemoteCommunicationServer::Handle_qPlatform_mkdir (StringExtractorGDBRemote &packet) 1277 { 1278 packet.SetFilePos(::strlen("qPlatform_mkdir:")); 1279 mode_t mode = packet.GetHexMaxU32(false, UINT32_MAX); 1280 if (packet.GetChar() == ',') 1281 { 1282 std::string path; 1283 packet.GetHexByteString(path); 1284 Error error = Host::MakeDirectory(path.c_str(),mode); 1285 if (error.Success()) 1286 return SendPacketNoLock ("OK", 2); 1287 else 1288 return SendErrorResponse(error.GetError()); 1289 } 1290 return SendErrorResponse(20); 1291 } 1292 1293 GDBRemoteCommunication::PacketResult 1294 GDBRemoteCommunicationServer::Handle_qPlatform_chmod (StringExtractorGDBRemote &packet) 1295 { 1296 packet.SetFilePos(::strlen("qPlatform_chmod:")); 1297 1298 mode_t mode = packet.GetHexMaxU32(false, UINT32_MAX); 1299 if (packet.GetChar() == ',') 1300 { 1301 std::string path; 1302 packet.GetHexByteString(path); 1303 Error error = Host::SetFilePermissions (path.c_str(), mode); 1304 if (error.Success()) 1305 return SendPacketNoLock ("OK", 2); 1306 else 1307 return SendErrorResponse(error.GetError()); 1308 } 1309 return SendErrorResponse(19); 1310 } 1311 1312 GDBRemoteCommunication::PacketResult 1313 GDBRemoteCommunicationServer::Handle_vFile_Open (StringExtractorGDBRemote &packet) 1314 { 1315 packet.SetFilePos(::strlen("vFile:open:")); 1316 std::string path; 1317 packet.GetHexByteStringTerminatedBy(path,','); 1318 if (!path.empty()) 1319 { 1320 if (packet.GetChar() == ',') 1321 { 1322 uint32_t flags = packet.GetHexMaxU32(false, 0); 1323 if (packet.GetChar() == ',') 1324 { 1325 mode_t mode = packet.GetHexMaxU32(false, 0600); 1326 Error error; 1327 int fd = ::open (path.c_str(), flags, mode); 1328 const int save_errno = fd == -1 ? errno : 0; 1329 StreamString response; 1330 response.PutChar('F'); 1331 response.Printf("%i", fd); 1332 if (save_errno) 1333 response.Printf(",%i", save_errno); 1334 return SendPacketNoLock(response.GetData(), response.GetSize()); 1335 } 1336 } 1337 } 1338 return SendErrorResponse(18); 1339 } 1340 1341 GDBRemoteCommunication::PacketResult 1342 GDBRemoteCommunicationServer::Handle_vFile_Close (StringExtractorGDBRemote &packet) 1343 { 1344 packet.SetFilePos(::strlen("vFile:close:")); 1345 int fd = packet.GetS32(-1); 1346 Error error; 1347 int err = -1; 1348 int save_errno = 0; 1349 if (fd >= 0) 1350 { 1351 err = close(fd); 1352 save_errno = err == -1 ? errno : 0; 1353 } 1354 else 1355 { 1356 save_errno = EINVAL; 1357 } 1358 StreamString response; 1359 response.PutChar('F'); 1360 response.Printf("%i", err); 1361 if (save_errno) 1362 response.Printf(",%i", save_errno); 1363 return SendPacketNoLock(response.GetData(), response.GetSize()); 1364 } 1365 1366 GDBRemoteCommunication::PacketResult 1367 GDBRemoteCommunicationServer::Handle_vFile_pRead (StringExtractorGDBRemote &packet) 1368 { 1369 #ifdef _WIN32 1370 // Not implemented on Windows 1371 return SendUnimplementedResponse("GDBRemoteCommunicationServer::Handle_vFile_pRead() unimplemented"); 1372 #else 1373 StreamGDBRemote response; 1374 packet.SetFilePos(::strlen("vFile:pread:")); 1375 int fd = packet.GetS32(-1); 1376 if (packet.GetChar() == ',') 1377 { 1378 uint64_t count = packet.GetU64(UINT64_MAX); 1379 if (packet.GetChar() == ',') 1380 { 1381 uint64_t offset = packet.GetU64(UINT32_MAX); 1382 if (count == UINT64_MAX) 1383 { 1384 response.Printf("F-1:%i", EINVAL); 1385 return SendPacketNoLock(response.GetData(), response.GetSize()); 1386 } 1387 1388 std::string buffer(count, 0); 1389 const ssize_t bytes_read = ::pread (fd, &buffer[0], buffer.size(), offset); 1390 const int save_errno = bytes_read == -1 ? errno : 0; 1391 response.PutChar('F'); 1392 response.Printf("%zi", bytes_read); 1393 if (save_errno) 1394 response.Printf(",%i", save_errno); 1395 else 1396 { 1397 response.PutChar(';'); 1398 response.PutEscapedBytes(&buffer[0], bytes_read); 1399 } 1400 return SendPacketNoLock(response.GetData(), response.GetSize()); 1401 } 1402 } 1403 return SendErrorResponse(21); 1404 1405 #endif 1406 } 1407 1408 GDBRemoteCommunication::PacketResult 1409 GDBRemoteCommunicationServer::Handle_vFile_pWrite (StringExtractorGDBRemote &packet) 1410 { 1411 #ifdef _WIN32 1412 return SendUnimplementedResponse("GDBRemoteCommunicationServer::Handle_vFile_pWrite() unimplemented"); 1413 #else 1414 packet.SetFilePos(::strlen("vFile:pwrite:")); 1415 1416 StreamGDBRemote response; 1417 response.PutChar('F'); 1418 1419 int fd = packet.GetU32(UINT32_MAX); 1420 if (packet.GetChar() == ',') 1421 { 1422 off_t offset = packet.GetU64(UINT32_MAX); 1423 if (packet.GetChar() == ',') 1424 { 1425 std::string buffer; 1426 if (packet.GetEscapedBinaryData(buffer)) 1427 { 1428 const ssize_t bytes_written = ::pwrite (fd, buffer.data(), buffer.size(), offset); 1429 const int save_errno = bytes_written == -1 ? errno : 0; 1430 response.Printf("%zi", bytes_written); 1431 if (save_errno) 1432 response.Printf(",%i", save_errno); 1433 } 1434 else 1435 { 1436 response.Printf ("-1,%i", EINVAL); 1437 } 1438 return SendPacketNoLock(response.GetData(), response.GetSize()); 1439 } 1440 } 1441 return SendErrorResponse(27); 1442 #endif 1443 } 1444 1445 GDBRemoteCommunication::PacketResult 1446 GDBRemoteCommunicationServer::Handle_vFile_Size (StringExtractorGDBRemote &packet) 1447 { 1448 packet.SetFilePos(::strlen("vFile:size:")); 1449 std::string path; 1450 packet.GetHexByteString(path); 1451 if (!path.empty()) 1452 { 1453 lldb::user_id_t retcode = Host::GetFileSize(FileSpec(path.c_str(), false)); 1454 StreamString response; 1455 response.PutChar('F'); 1456 response.PutHex64(retcode); 1457 if (retcode == UINT64_MAX) 1458 { 1459 response.PutChar(','); 1460 response.PutHex64(retcode); // TODO: replace with Host::GetSyswideErrorCode() 1461 } 1462 return SendPacketNoLock(response.GetData(), response.GetSize()); 1463 } 1464 return SendErrorResponse(22); 1465 } 1466 1467 GDBRemoteCommunication::PacketResult 1468 GDBRemoteCommunicationServer::Handle_vFile_Mode (StringExtractorGDBRemote &packet) 1469 { 1470 packet.SetFilePos(::strlen("vFile:mode:")); 1471 std::string path; 1472 packet.GetHexByteString(path); 1473 if (!path.empty()) 1474 { 1475 Error error; 1476 const uint32_t mode = File::GetPermissions(path.c_str(), error); 1477 StreamString response; 1478 response.Printf("F%u", mode); 1479 if (mode == 0 || error.Fail()) 1480 response.Printf(",%i", (int)error.GetError()); 1481 return SendPacketNoLock(response.GetData(), response.GetSize()); 1482 } 1483 return SendErrorResponse(23); 1484 } 1485 1486 GDBRemoteCommunication::PacketResult 1487 GDBRemoteCommunicationServer::Handle_vFile_Exists (StringExtractorGDBRemote &packet) 1488 { 1489 packet.SetFilePos(::strlen("vFile:exists:")); 1490 std::string path; 1491 packet.GetHexByteString(path); 1492 if (!path.empty()) 1493 { 1494 bool retcode = Host::GetFileExists(FileSpec(path.c_str(), false)); 1495 StreamString response; 1496 response.PutChar('F'); 1497 response.PutChar(','); 1498 if (retcode) 1499 response.PutChar('1'); 1500 else 1501 response.PutChar('0'); 1502 return SendPacketNoLock(response.GetData(), response.GetSize()); 1503 } 1504 return SendErrorResponse(24); 1505 } 1506 1507 GDBRemoteCommunication::PacketResult 1508 GDBRemoteCommunicationServer::Handle_vFile_symlink (StringExtractorGDBRemote &packet) 1509 { 1510 packet.SetFilePos(::strlen("vFile:symlink:")); 1511 std::string dst, src; 1512 packet.GetHexByteStringTerminatedBy(dst, ','); 1513 packet.GetChar(); // Skip ',' char 1514 packet.GetHexByteString(src); 1515 Error error = Host::Symlink(src.c_str(), dst.c_str()); 1516 StreamString response; 1517 response.Printf("F%u,%u", error.GetError(), error.GetError()); 1518 return SendPacketNoLock(response.GetData(), response.GetSize()); 1519 } 1520 1521 GDBRemoteCommunication::PacketResult 1522 GDBRemoteCommunicationServer::Handle_vFile_unlink (StringExtractorGDBRemote &packet) 1523 { 1524 packet.SetFilePos(::strlen("vFile:unlink:")); 1525 std::string path; 1526 packet.GetHexByteString(path); 1527 Error error = Host::Unlink(path.c_str()); 1528 StreamString response; 1529 response.Printf("F%u,%u", error.GetError(), error.GetError()); 1530 return SendPacketNoLock(response.GetData(), response.GetSize()); 1531 } 1532 1533 GDBRemoteCommunication::PacketResult 1534 GDBRemoteCommunicationServer::Handle_qPlatform_shell (StringExtractorGDBRemote &packet) 1535 { 1536 packet.SetFilePos(::strlen("qPlatform_shell:")); 1537 std::string path; 1538 std::string working_dir; 1539 packet.GetHexByteStringTerminatedBy(path,','); 1540 if (!path.empty()) 1541 { 1542 if (packet.GetChar() == ',') 1543 { 1544 // FIXME: add timeout to qPlatform_shell packet 1545 // uint32_t timeout = packet.GetHexMaxU32(false, 32); 1546 uint32_t timeout = 10; 1547 if (packet.GetChar() == ',') 1548 packet.GetHexByteString(working_dir); 1549 int status, signo; 1550 std::string output; 1551 Error err = Host::RunShellCommand(path.c_str(), 1552 working_dir.empty() ? NULL : working_dir.c_str(), 1553 &status, &signo, &output, timeout); 1554 StreamGDBRemote response; 1555 if (err.Fail()) 1556 { 1557 response.PutCString("F,"); 1558 response.PutHex32(UINT32_MAX); 1559 } 1560 else 1561 { 1562 response.PutCString("F,"); 1563 response.PutHex32(status); 1564 response.PutChar(','); 1565 response.PutHex32(signo); 1566 response.PutChar(','); 1567 response.PutEscapedBytes(output.c_str(), output.size()); 1568 } 1569 return SendPacketNoLock(response.GetData(), response.GetSize()); 1570 } 1571 } 1572 return SendErrorResponse(24); 1573 } 1574 1575 GDBRemoteCommunication::PacketResult 1576 GDBRemoteCommunicationServer::Handle_vFile_Stat (StringExtractorGDBRemote &packet) 1577 { 1578 return SendUnimplementedResponse("GDBRemoteCommunicationServer::Handle_vFile_Stat() unimplemented"); 1579 } 1580 1581 GDBRemoteCommunication::PacketResult 1582 GDBRemoteCommunicationServer::Handle_vFile_MD5 (StringExtractorGDBRemote &packet) 1583 { 1584 packet.SetFilePos(::strlen("vFile:MD5:")); 1585 std::string path; 1586 packet.GetHexByteString(path); 1587 if (!path.empty()) 1588 { 1589 uint64_t a,b; 1590 StreamGDBRemote response; 1591 if (Host::CalculateMD5(FileSpec(path.c_str(),false),a,b) == false) 1592 { 1593 response.PutCString("F,"); 1594 response.PutCString("x"); 1595 } 1596 else 1597 { 1598 response.PutCString("F,"); 1599 response.PutHex64(a); 1600 response.PutHex64(b); 1601 } 1602 return SendPacketNoLock(response.GetData(), response.GetSize()); 1603 } 1604 return SendErrorResponse(25); 1605 } 1606 1607