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