contrib/llvm-project/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerCommon.cpp

   1 //===-- GDBRemoteCommunicationServerCommon.cpp ------------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "GDBRemoteCommunicationServerCommon.h"
  10
  11 #include <errno.h>
  12
  13 #ifdef __APPLE__
  14 #include <TargetConditionals.h>
  15 #endif
  16
  17 #include <chrono>
  18 #include <cstring>
  19
  20 #include "lldb/Core/ModuleSpec.h"
  21 #include "lldb/Host/Config.h"
  22 #include "lldb/Host/File.h"
  23 #include "lldb/Host/FileAction.h"
  24 #include "lldb/Host/FileSystem.h"
  25 #include "lldb/Host/Host.h"
  26 #include "lldb/Host/HostInfo.h"
  27 #include "lldb/Host/SafeMachO.h"
  28 #include "lldb/Interpreter/OptionArgParser.h"
  29 #include "lldb/Symbol/ObjectFile.h"
  30 #include "lldb/Target/Platform.h"
  31 #include "lldb/Utility/Endian.h"
  32 #include "lldb/Utility/JSON.h"
  33 #include "lldb/Utility/Log.h"
  34 #include "lldb/Utility/StreamGDBRemote.h"
  35 #include "lldb/Utility/StreamString.h"
  36 #include "lldb/Utility/StructuredData.h"
  37 #include "llvm/ADT/Triple.h"
  38
  39 #include "ProcessGDBRemoteLog.h"
  40 #include "lldb/Utility/StringExtractorGDBRemote.h"
  41
  42 #ifdef __ANDROID__
  43 #include "lldb/Host/android/HostInfoAndroid.h"
  44 #endif
  45
  46 #include "llvm/ADT/StringSwitch.h"
  47
  48 using namespace lldb;
  49 using namespace lldb_private;
  50 using namespace lldb_private::process_gdb_remote;
  51
  52 #ifdef __ANDROID__
  53 const static uint32_t g_default_packet_timeout_sec = 20; // seconds
  54 #else
  55 const static uint32_t g_default_packet_timeout_sec = 0; // not specified
  56 #endif
  57
  58 // GDBRemoteCommunicationServerCommon constructor
  59 GDBRemoteCommunicationServerCommon::GDBRemoteCommunicationServerCommon(
  60     const char *comm_name, const char *listener_name)
  61     : GDBRemoteCommunicationServer(comm_name, listener_name),
  62       m_process_launch_info(), m_process_launch_error(), m_proc_infos(),
  63       m_proc_infos_index(0), m_thread_suffix_supported(false),
  64       m_list_threads_in_stop_reply(false) {
  65   RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_A,
  66                                 &GDBRemoteCommunicationServerCommon::Handle_A);
  67   RegisterMemberFunctionHandler(
  68       StringExtractorGDBRemote::eServerPacketType_QEnvironment,
  69       &GDBRemoteCommunicationServerCommon::Handle_QEnvironment);
  70   RegisterMemberFunctionHandler(
  71       StringExtractorGDBRemote::eServerPacketType_QEnvironmentHexEncoded,
  72       &GDBRemoteCommunicationServerCommon::Handle_QEnvironmentHexEncoded);
  73   RegisterMemberFunctionHandler(
  74       StringExtractorGDBRemote::eServerPacketType_qfProcessInfo,
  75       &GDBRemoteCommunicationServerCommon::Handle_qfProcessInfo);
  76   RegisterMemberFunctionHandler(
  77       StringExtractorGDBRemote::eServerPacketType_qGroupName,
  78       &GDBRemoteCommunicationServerCommon::Handle_qGroupName);
  79   RegisterMemberFunctionHandler(
  80       StringExtractorGDBRemote::eServerPacketType_qHostInfo,
  81       &GDBRemoteCommunicationServerCommon::Handle_qHostInfo);
  82   RegisterMemberFunctionHandler(
  83       StringExtractorGDBRemote::eServerPacketType_QLaunchArch,
  84       &GDBRemoteCommunicationServerCommon::Handle_QLaunchArch);
  85   RegisterMemberFunctionHandler(
  86       StringExtractorGDBRemote::eServerPacketType_qLaunchSuccess,
  87       &GDBRemoteCommunicationServerCommon::Handle_qLaunchSuccess);
  88   RegisterMemberFunctionHandler(
  89       StringExtractorGDBRemote::eServerPacketType_QListThreadsInStopReply,
  90       &GDBRemoteCommunicationServerCommon::Handle_QListThreadsInStopReply);
  91   RegisterMemberFunctionHandler(
  92       StringExtractorGDBRemote::eServerPacketType_qEcho,
  93       &GDBRemoteCommunicationServerCommon::Handle_qEcho);
  94   RegisterMemberFunctionHandler(
  95       StringExtractorGDBRemote::eServerPacketType_qModuleInfo,
  96       &GDBRemoteCommunicationServerCommon::Handle_qModuleInfo);
  97   RegisterMemberFunctionHandler(
  98       StringExtractorGDBRemote::eServerPacketType_jModulesInfo,
  99       &GDBRemoteCommunicationServerCommon::Handle_jModulesInfo);
 100   RegisterMemberFunctionHandler(
 101       StringExtractorGDBRemote::eServerPacketType_qPlatform_chmod,
 102       &GDBRemoteCommunicationServerCommon::Handle_qPlatform_chmod);
 103   RegisterMemberFunctionHandler(
 104       StringExtractorGDBRemote::eServerPacketType_qPlatform_mkdir,
 105       &GDBRemoteCommunicationServerCommon::Handle_qPlatform_mkdir);
 106   RegisterMemberFunctionHandler(
 107       StringExtractorGDBRemote::eServerPacketType_qPlatform_shell,
 108       &GDBRemoteCommunicationServerCommon::Handle_qPlatform_shell);
 109   RegisterMemberFunctionHandler(
 110       StringExtractorGDBRemote::eServerPacketType_qProcessInfoPID,
 111       &GDBRemoteCommunicationServerCommon::Handle_qProcessInfoPID);
 112   RegisterMemberFunctionHandler(
 113       StringExtractorGDBRemote::eServerPacketType_QSetDetachOnError,
 114       &GDBRemoteCommunicationServerCommon::Handle_QSetDetachOnError);
 115   RegisterMemberFunctionHandler(
 116       StringExtractorGDBRemote::eServerPacketType_QSetSTDERR,
 117       &GDBRemoteCommunicationServerCommon::Handle_QSetSTDERR);
 118   RegisterMemberFunctionHandler(
 119       StringExtractorGDBRemote::eServerPacketType_QSetSTDIN,
 120       &GDBRemoteCommunicationServerCommon::Handle_QSetSTDIN);
 121   RegisterMemberFunctionHandler(
 122       StringExtractorGDBRemote::eServerPacketType_QSetSTDOUT,
 123       &GDBRemoteCommunicationServerCommon::Handle_QSetSTDOUT);
 124   RegisterMemberFunctionHandler(
 125       StringExtractorGDBRemote::eServerPacketType_qSpeedTest,
 126       &GDBRemoteCommunicationServerCommon::Handle_qSpeedTest);
 127   RegisterMemberFunctionHandler(
 128       StringExtractorGDBRemote::eServerPacketType_qsProcessInfo,
 129       &GDBRemoteCommunicationServerCommon::Handle_qsProcessInfo);
 130   RegisterMemberFunctionHandler(
 131       StringExtractorGDBRemote::eServerPacketType_QStartNoAckMode,
 132       &GDBRemoteCommunicationServerCommon::Handle_QStartNoAckMode);
 133   RegisterMemberFunctionHandler(
 134       StringExtractorGDBRemote::eServerPacketType_qSupported,
 135       &GDBRemoteCommunicationServerCommon::Handle_qSupported);
 136   RegisterMemberFunctionHandler(
 137       StringExtractorGDBRemote::eServerPacketType_QThreadSuffixSupported,
 138       &GDBRemoteCommunicationServerCommon::Handle_QThreadSuffixSupported);
 139   RegisterMemberFunctionHandler(
 140       StringExtractorGDBRemote::eServerPacketType_qUserName,
 141       &GDBRemoteCommunicationServerCommon::Handle_qUserName);
 142   RegisterMemberFunctionHandler(
 143       StringExtractorGDBRemote::eServerPacketType_vFile_close,
 144       &GDBRemoteCommunicationServerCommon::Handle_vFile_Close);
 145   RegisterMemberFunctionHandler(
 146       StringExtractorGDBRemote::eServerPacketType_vFile_exists,
 147       &GDBRemoteCommunicationServerCommon::Handle_vFile_Exists);
 148   RegisterMemberFunctionHandler(
 149       StringExtractorGDBRemote::eServerPacketType_vFile_md5,
 150       &GDBRemoteCommunicationServerCommon::Handle_vFile_MD5);
 151   RegisterMemberFunctionHandler(
 152       StringExtractorGDBRemote::eServerPacketType_vFile_mode,
 153       &GDBRemoteCommunicationServerCommon::Handle_vFile_Mode);
 154   RegisterMemberFunctionHandler(
 155       StringExtractorGDBRemote::eServerPacketType_vFile_open,
 156       &GDBRemoteCommunicationServerCommon::Handle_vFile_Open);
 157   RegisterMemberFunctionHandler(
 158       StringExtractorGDBRemote::eServerPacketType_vFile_pread,
 159       &GDBRemoteCommunicationServerCommon::Handle_vFile_pRead);
 160   RegisterMemberFunctionHandler(
 161       StringExtractorGDBRemote::eServerPacketType_vFile_pwrite,
 162       &GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite);
 163   RegisterMemberFunctionHandler(
 164       StringExtractorGDBRemote::eServerPacketType_vFile_size,
 165       &GDBRemoteCommunicationServerCommon::Handle_vFile_Size);
 166   RegisterMemberFunctionHandler(
 167       StringExtractorGDBRemote::eServerPacketType_vFile_stat,
 168       &GDBRemoteCommunicationServerCommon::Handle_vFile_Stat);
 169   RegisterMemberFunctionHandler(
 170       StringExtractorGDBRemote::eServerPacketType_vFile_symlink,
 171       &GDBRemoteCommunicationServerCommon::Handle_vFile_symlink);
 172   RegisterMemberFunctionHandler(
 173       StringExtractorGDBRemote::eServerPacketType_vFile_unlink,
 174       &GDBRemoteCommunicationServerCommon::Handle_vFile_unlink);
 175 }
 176
 177 // Destructor
 178 GDBRemoteCommunicationServerCommon::~GDBRemoteCommunicationServerCommon() {}
 179
 180 GDBRemoteCommunication::PacketResult
 181 GDBRemoteCommunicationServerCommon::Handle_qHostInfo(
 182     StringExtractorGDBRemote &packet) {
 183   StreamString response;
 184
 185   // $cputype:16777223;cpusubtype:3;ostype:Darwin;vendor:apple;endian:little;ptrsize:8;#00
 186
 187   ArchSpec host_arch(HostInfo::GetArchitecture());
 188   const llvm::Triple &host_triple = host_arch.GetTriple();
 189   response.PutCString("triple:");
 190   response.PutStringAsRawHex8(host_triple.getTriple());
 191   response.Printf(";ptrsize:%u;", host_arch.GetAddressByteSize());
 192
 193   const char *distribution_id = host_arch.GetDistributionId().AsCString();
 194   if (distribution_id) {
 195     response.PutCString("distribution_id:");
 196     response.PutStringAsRawHex8(distribution_id);
 197     response.PutCString(";");
 198   }
 199
 200 #if defined(__APPLE__)
 201   // For parity with debugserver, we'll include the vendor key.
 202   response.PutCString("vendor:apple;");
 203
 204   // Send out MachO info.
 205   uint32_t cpu = host_arch.GetMachOCPUType();
 206   uint32_t sub = host_arch.GetMachOCPUSubType();
 207   if (cpu != LLDB_INVALID_CPUTYPE)
 208     response.Printf("cputype:%u;", cpu);
 209   if (sub != LLDB_INVALID_CPUTYPE)
 210     response.Printf("cpusubtype:%u;", sub);
 211
 212   if (cpu == llvm::MachO::CPU_TYPE_ARM || cpu == llvm::MachO::CPU_TYPE_ARM64) {
 213 // Indicate the OS type.
 214 #if defined(TARGET_OS_TV) && TARGET_OS_TV == 1
 215     response.PutCString("ostype:tvos;");
 216 #elif defined(TARGET_OS_WATCH) && TARGET_OS_WATCH == 1
 217     response.PutCString("ostype:watchos;");
 218 #elif defined(TARGET_OS_BRIDGE) && TARGET_OS_BRIDGE == 1
 219     response.PutCString("ostype:bridgeos;");
 220 #else
 221     response.PutCString("ostype:ios;");
 222 #endif
 223
 224     // On arm, we use "synchronous" watchpoints which means the exception is
 225     // delivered before the instruction executes.
 226     response.PutCString("watchpoint_exceptions_received:before;");
 227   } else {
 228     response.PutCString("ostype:macosx;");
 229     response.Printf("watchpoint_exceptions_received:after;");
 230   }
 231
 232 #else
 233   if (host_arch.GetMachine() == llvm::Triple::aarch64 ||
 234       host_arch.GetMachine() == llvm::Triple::aarch64_be ||
 235       host_arch.GetMachine() == llvm::Triple::arm ||
 236       host_arch.GetMachine() == llvm::Triple::armeb || host_arch.IsMIPS())
 237     response.Printf("watchpoint_exceptions_received:before;");
 238   else
 239     response.Printf("watchpoint_exceptions_received:after;");
 240 #endif
 241
 242   switch (endian::InlHostByteOrder()) {
 243   case eByteOrderBig:
 244     response.PutCString("endian:big;");
 245     break;
 246   case eByteOrderLittle:
 247     response.PutCString("endian:little;");
 248     break;
 249   case eByteOrderPDP:
 250     response.PutCString("endian:pdp;");
 251     break;
 252   default:
 253     response.PutCString("endian:unknown;");
 254     break;
 255   }
 256
 257   llvm::VersionTuple version = HostInfo::GetOSVersion();
 258   if (!version.empty()) {
 259     response.Format("os_version:{0}", version.getAsString());
 260     response.PutChar(';');
 261   }
 262
 263   std::string s;
 264   if (HostInfo::GetOSBuildString(s)) {
 265     response.PutCString("os_build:");
 266     response.PutStringAsRawHex8(s);
 267     response.PutChar(';');
 268   }
 269   if (HostInfo::GetOSKernelDescription(s)) {
 270     response.PutCString("os_kernel:");
 271     response.PutStringAsRawHex8(s);
 272     response.PutChar(';');
 273   }
 274
 275 #if defined(__APPLE__)
 276
 277 #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
 278   // For iOS devices, we are connected through a USB Mux so we never pretend to
 279   // actually have a hostname as far as the remote lldb that is connecting to
 280   // this lldb-platform is concerned
 281   response.PutCString("hostname:");
 282   response.PutStringAsRawHex8("127.0.0.1");
 283   response.PutChar(';');
 284 #else  // #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
 285   if (HostInfo::GetHostname(s)) {
 286     response.PutCString("hostname:");
 287     response.PutStringAsRawHex8(s);
 288     response.PutChar(';');
 289   }
 290 #endif // #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
 291
 292 #else  // #if defined(__APPLE__)
 293   if (HostInfo::GetHostname(s)) {
 294     response.PutCString("hostname:");
 295     response.PutStringAsRawHex8(s);
 296     response.PutChar(';');
 297   }
 298 #endif // #if defined(__APPLE__)
 299
 300   if (g_default_packet_timeout_sec > 0)
 301     response.Printf("default_packet_timeout:%u;", g_default_packet_timeout_sec);
 302
 303   return SendPacketNoLock(response.GetString());
 304 }
 305
 306 GDBRemoteCommunication::PacketResult
 307 GDBRemoteCommunicationServerCommon::Handle_qProcessInfoPID(
 308     StringExtractorGDBRemote &packet) {
 309   // Packet format: "qProcessInfoPID:%i" where %i is the pid
 310   packet.SetFilePos(::strlen("qProcessInfoPID:"));
 311   lldb::pid_t pid = packet.GetU32(LLDB_INVALID_PROCESS_ID);
 312   if (pid != LLDB_INVALID_PROCESS_ID) {
 313     ProcessInstanceInfo proc_info;
 314     if (Host::GetProcessInfo(pid, proc_info)) {
 315       StreamString response;
 316       CreateProcessInfoResponse(proc_info, response);
 317       return SendPacketNoLock(response.GetString());
 318     }
 319   }
 320   return SendErrorResponse(1);
 321 }
 322
 323 GDBRemoteCommunication::PacketResult
 324 GDBRemoteCommunicationServerCommon::Handle_qfProcessInfo(
 325     StringExtractorGDBRemote &packet) {
 326   m_proc_infos_index = 0;
 327   m_proc_infos.Clear();
 328
 329   ProcessInstanceInfoMatch match_info;
 330   packet.SetFilePos(::strlen("qfProcessInfo"));
 331   if (packet.GetChar() == ':') {
 332     llvm::StringRef key;
 333     llvm::StringRef value;
 334     while (packet.GetNameColonValue(key, value)) {
 335       bool success = true;
 336       if (key.equals("name")) {
 337         StringExtractor extractor(value);
 338         std::string file;
 339         extractor.GetHexByteString(file);
 340         match_info.GetProcessInfo().GetExecutableFile().SetFile(
 341             file, FileSpec::Style::native);
 342       } else if (key.equals("name_match")) {
 343         NameMatch name_match = llvm::StringSwitch<NameMatch>(value)
 344                                    .Case("equals", NameMatch::Equals)
 345                                    .Case("starts_with", NameMatch::StartsWith)
 346                                    .Case("ends_with", NameMatch::EndsWith)
 347                                    .Case("contains", NameMatch::Contains)
 348                                    .Case("regex", NameMatch::RegularExpression)
 349                                    .Default(NameMatch::Ignore);
 350         match_info.SetNameMatchType(name_match);
 351         if (name_match == NameMatch::Ignore)
 352           return SendErrorResponse(2);
 353       } else if (key.equals("pid")) {
 354         lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
 355         if (value.getAsInteger(0, pid))
 356           return SendErrorResponse(2);
 357         match_info.GetProcessInfo().SetProcessID(pid);
 358       } else if (key.equals("parent_pid")) {
 359         lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
 360         if (value.getAsInteger(0, pid))
 361           return SendErrorResponse(2);
 362         match_info.GetProcessInfo().SetParentProcessID(pid);
 363       } else if (key.equals("uid")) {
 364         uint32_t uid = UINT32_MAX;
 365         if (value.getAsInteger(0, uid))
 366           return SendErrorResponse(2);
 367         match_info.GetProcessInfo().SetUserID(uid);
 368       } else if (key.equals("gid")) {
 369         uint32_t gid = UINT32_MAX;
 370         if (value.getAsInteger(0, gid))
 371           return SendErrorResponse(2);
 372         match_info.GetProcessInfo().SetGroupID(gid);
 373       } else if (key.equals("euid")) {
 374         uint32_t uid = UINT32_MAX;
 375         if (value.getAsInteger(0, uid))
 376           return SendErrorResponse(2);
 377         match_info.GetProcessInfo().SetEffectiveUserID(uid);
 378       } else if (key.equals("egid")) {
 379         uint32_t gid = UINT32_MAX;
 380         if (value.getAsInteger(0, gid))
 381           return SendErrorResponse(2);
 382         match_info.GetProcessInfo().SetEffectiveGroupID(gid);
 383       } else if (key.equals("all_users")) {
 384         match_info.SetMatchAllUsers(
 385             OptionArgParser::ToBoolean(value, false, &success));
 386       } else if (key.equals("triple")) {
 387         match_info.GetProcessInfo().GetArchitecture() =
 388             HostInfo::GetAugmentedArchSpec(value);
 389       } else {
 390         success = false;
 391       }
 392
 393       if (!success)
 394         return SendErrorResponse(2);
 395     }
 396   }
 397
 398   if (Host::FindProcesses(match_info, m_proc_infos)) {
 399     // We found something, return the first item by calling the get subsequent
 400     // process info packet handler...
 401     return Handle_qsProcessInfo(packet);
 402   }
 403   return SendErrorResponse(3);
 404 }
 405
 406 GDBRemoteCommunication::PacketResult
 407 GDBRemoteCommunicationServerCommon::Handle_qsProcessInfo(
 408     StringExtractorGDBRemote &packet) {
 409   if (m_proc_infos_index < m_proc_infos.GetSize()) {
 410     StreamString response;
 411     CreateProcessInfoResponse(
 412         m_proc_infos.GetProcessInfoAtIndex(m_proc_infos_index), response);
 413     ++m_proc_infos_index;
 414     return SendPacketNoLock(response.GetString());
 415   }
 416   return SendErrorResponse(4);
 417 }
 418
 419 GDBRemoteCommunication::PacketResult
 420 GDBRemoteCommunicationServerCommon::Handle_qUserName(
 421     StringExtractorGDBRemote &packet) {
 422 #if !defined(LLDB_DISABLE_POSIX)
 423   Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
 424   if (log)
 425     log->Printf("GDBRemoteCommunicationServerCommon::%s begin", __FUNCTION__);
 426
 427   // Packet format: "qUserName:%i" where %i is the uid
 428   packet.SetFilePos(::strlen("qUserName:"));
 429   uint32_t uid = packet.GetU32(UINT32_MAX);
 430   if (uid != UINT32_MAX) {
 431     if (llvm::Optional<llvm::StringRef> name =
 432             HostInfo::GetUserIDResolver().GetUserName(uid)) {
 433       StreamString response;
 434       response.PutStringAsRawHex8(*name);
 435       return SendPacketNoLock(response.GetString());
 436     }
 437   }
 438   if (log)
 439     log->Printf("GDBRemoteCommunicationServerCommon::%s end", __FUNCTION__);
 440 #endif
 441   return SendErrorResponse(5);
 442 }
 443
 444 GDBRemoteCommunication::PacketResult
 445 GDBRemoteCommunicationServerCommon::Handle_qGroupName(
 446     StringExtractorGDBRemote &packet) {
 447 #if !defined(LLDB_DISABLE_POSIX)
 448   // Packet format: "qGroupName:%i" where %i is the gid
 449   packet.SetFilePos(::strlen("qGroupName:"));
 450   uint32_t gid = packet.GetU32(UINT32_MAX);
 451   if (gid != UINT32_MAX) {
 452     if (llvm::Optional<llvm::StringRef> name =
 453             HostInfo::GetUserIDResolver().GetGroupName(gid)) {
 454       StreamString response;
 455       response.PutStringAsRawHex8(*name);
 456       return SendPacketNoLock(response.GetString());
 457     }
 458   }
 459 #endif
 460   return SendErrorResponse(6);
 461 }
 462
 463 GDBRemoteCommunication::PacketResult
 464 GDBRemoteCommunicationServerCommon::Handle_qSpeedTest(
 465     StringExtractorGDBRemote &packet) {
 466   packet.SetFilePos(::strlen("qSpeedTest:"));
 467
 468   llvm::StringRef key;
 469   llvm::StringRef value;
 470   bool success = packet.GetNameColonValue(key, value);
 471   if (success && key.equals("response_size")) {
 472     uint32_t response_size = 0;
 473     if (!value.getAsInteger(0, response_size)) {
 474       if (response_size == 0)
 475         return SendOKResponse();
 476       StreamString response;
 477       uint32_t bytes_left = response_size;
 478       response.PutCString("data:");
 479       while (bytes_left > 0) {
 480         if (bytes_left >= 26) {
 481           response.PutCString("ABCDEFGHIJKLMNOPQRSTUVWXYZ");
 482           bytes_left -= 26;
 483         } else {
 484           response.Printf("%*.*s;", bytes_left, bytes_left,
 485                           "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
 486           bytes_left = 0;
 487         }
 488       }
 489       return SendPacketNoLock(response.GetString());
 490     }
 491   }
 492   return SendErrorResponse(7);
 493 }
 494
 495 GDBRemoteCommunication::PacketResult
 496 GDBRemoteCommunicationServerCommon::Handle_vFile_Open(
 497     StringExtractorGDBRemote &packet) {
 498   packet.SetFilePos(::strlen("vFile:open:"));
 499   std::string path;
 500   packet.GetHexByteStringTerminatedBy(path, ',');
 501   if (!path.empty()) {
 502     if (packet.GetChar() == ',') {
 503       uint32_t flags = packet.GetHexMaxU32(false, 0);
 504       if (packet.GetChar() == ',') {
 505         mode_t mode = packet.GetHexMaxU32(false, 0600);
 506         FileSpec path_spec(path);
 507         FileSystem::Instance().Resolve(path_spec);
 508         File file;
 509         // Do not close fd.
 510         Status error =
 511             FileSystem::Instance().Open(file, path_spec, flags, mode, false);
 512         const int save_errno = error.GetError();
 513         StreamString response;
 514         response.PutChar('F');
 515         response.Printf("%i", file.GetDescriptor());
 516         if (save_errno)
 517           response.Printf(",%i", save_errno);
 518         return SendPacketNoLock(response.GetString());
 519       }
 520     }
 521   }
 522   return SendErrorResponse(18);
 523 }
 524
 525 GDBRemoteCommunication::PacketResult
 526 GDBRemoteCommunicationServerCommon::Handle_vFile_Close(
 527     StringExtractorGDBRemote &packet) {
 528   packet.SetFilePos(::strlen("vFile:close:"));
 529   int fd = packet.GetS32(-1);
 530   int err = -1;
 531   int save_errno = 0;
 532   if (fd >= 0) {
 533     File file(fd, true);
 534     Status error = file.Close();
 535     err = 0;
 536     save_errno = error.GetError();
 537   } else {
 538     save_errno = EINVAL;
 539   }
 540   StreamString response;
 541   response.PutChar('F');
 542   response.Printf("%i", err);
 543   if (save_errno)
 544     response.Printf(",%i", save_errno);
 545   return SendPacketNoLock(response.GetString());
 546 }
 547
 548 GDBRemoteCommunication::PacketResult
 549 GDBRemoteCommunicationServerCommon::Handle_vFile_pRead(
 550     StringExtractorGDBRemote &packet) {
 551   StreamGDBRemote response;
 552   packet.SetFilePos(::strlen("vFile:pread:"));
 553   int fd = packet.GetS32(-1);
 554   if (packet.GetChar() == ',') {
 555     size_t count = packet.GetU64(UINT64_MAX);
 556     if (packet.GetChar() == ',') {
 557       off_t offset = packet.GetU64(UINT32_MAX);
 558       if (count == UINT64_MAX) {
 559         response.Printf("F-1:%i", EINVAL);
 560         return SendPacketNoLock(response.GetString());
 561       }
 562
 563       std::string buffer(count, 0);
 564       File file(fd, false);
 565       Status error = file.Read(static_cast<void *>(&buffer[0]), count, offset);
 566       const ssize_t bytes_read = error.Success() ? count : -1;
 567       const int save_errno = error.GetError();
 568       response.PutChar('F');
 569       response.Printf("%zi", bytes_read);
 570       if (save_errno)
 571         response.Printf(",%i", save_errno);
 572       else {
 573         response.PutChar(';');
 574         response.PutEscapedBytes(&buffer[0], bytes_read);
 575       }
 576       return SendPacketNoLock(response.GetString());
 577     }
 578   }
 579   return SendErrorResponse(21);
 580 }
 581
 582 GDBRemoteCommunication::PacketResult
 583 GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite(
 584     StringExtractorGDBRemote &packet) {
 585   packet.SetFilePos(::strlen("vFile:pwrite:"));
 586
 587   StreamGDBRemote response;
 588   response.PutChar('F');
 589
 590   int fd = packet.GetU32(UINT32_MAX);
 591   if (packet.GetChar() == ',') {
 592     off_t offset = packet.GetU64(UINT32_MAX);
 593     if (packet.GetChar() == ',') {
 594       std::string buffer;
 595       if (packet.GetEscapedBinaryData(buffer)) {
 596         File file(fd, false);
 597         size_t count = buffer.size();
 598         Status error =
 599             file.Write(static_cast<const void *>(&buffer[0]), count, offset);
 600         const ssize_t bytes_written = error.Success() ? count : -1;
 601         const int save_errno = error.GetError();
 602         response.Printf("%zi", bytes_written);
 603         if (save_errno)
 604           response.Printf(",%i", save_errno);
 605       } else {
 606         response.Printf("-1,%i", EINVAL);
 607       }
 608       return SendPacketNoLock(response.GetString());
 609     }
 610   }
 611   return SendErrorResponse(27);
 612 }
 613
 614 GDBRemoteCommunication::PacketResult
 615 GDBRemoteCommunicationServerCommon::Handle_vFile_Size(
 616     StringExtractorGDBRemote &packet) {
 617   packet.SetFilePos(::strlen("vFile:size:"));
 618   std::string path;
 619   packet.GetHexByteString(path);
 620   if (!path.empty()) {
 621     uint64_t Size;
 622     if (llvm::sys::fs::file_size(path, Size))
 623       return SendErrorResponse(5);
 624     StreamString response;
 625     response.PutChar('F');
 626     response.PutHex64(Size);
 627     if (Size == UINT64_MAX) {
 628       response.PutChar(',');
 629       response.PutHex64(Size); // TODO: replace with Host::GetSyswideErrorCode()
 630     }
 631     return SendPacketNoLock(response.GetString());
 632   }
 633   return SendErrorResponse(22);
 634 }
 635
 636 GDBRemoteCommunication::PacketResult
 637 GDBRemoteCommunicationServerCommon::Handle_vFile_Mode(
 638     StringExtractorGDBRemote &packet) {
 639   packet.SetFilePos(::strlen("vFile:mode:"));
 640   std::string path;
 641   packet.GetHexByteString(path);
 642   if (!path.empty()) {
 643     FileSpec file_spec(path);
 644     FileSystem::Instance().Resolve(file_spec);
 645     std::error_code ec;
 646     const uint32_t mode = FileSystem::Instance().GetPermissions(file_spec, ec);
 647     StreamString response;
 648     response.Printf("F%u", mode);
 649     if (mode == 0 || ec)
 650       response.Printf(",%i", (int)Status(ec).GetError());
 651     return SendPacketNoLock(response.GetString());
 652   }
 653   return SendErrorResponse(23);
 654 }
 655
 656 GDBRemoteCommunication::PacketResult
 657 GDBRemoteCommunicationServerCommon::Handle_vFile_Exists(
 658     StringExtractorGDBRemote &packet) {
 659   packet.SetFilePos(::strlen("vFile:exists:"));
 660   std::string path;
 661   packet.GetHexByteString(path);
 662   if (!path.empty()) {
 663     bool retcode = llvm::sys::fs::exists(path);
 664     StreamString response;
 665     response.PutChar('F');
 666     response.PutChar(',');
 667     if (retcode)
 668       response.PutChar('1');
 669     else
 670       response.PutChar('0');
 671     return SendPacketNoLock(response.GetString());
 672   }
 673   return SendErrorResponse(24);
 674 }
 675
 676 GDBRemoteCommunication::PacketResult
 677 GDBRemoteCommunicationServerCommon::Handle_vFile_symlink(
 678     StringExtractorGDBRemote &packet) {
 679   packet.SetFilePos(::strlen("vFile:symlink:"));
 680   std::string dst, src;
 681   packet.GetHexByteStringTerminatedBy(dst, ',');
 682   packet.GetChar(); // Skip ',' char
 683   packet.GetHexByteString(src);
 684
 685   FileSpec src_spec(src);
 686   FileSystem::Instance().Resolve(src_spec);
 687   Status error = FileSystem::Instance().Symlink(src_spec, FileSpec(dst));
 688
 689   StreamString response;
 690   response.Printf("F%u,%u", error.GetError(), error.GetError());
 691   return SendPacketNoLock(response.GetString());
 692 }
 693
 694 GDBRemoteCommunication::PacketResult
 695 GDBRemoteCommunicationServerCommon::Handle_vFile_unlink(
 696     StringExtractorGDBRemote &packet) {
 697   packet.SetFilePos(::strlen("vFile:unlink:"));
 698   std::string path;
 699   packet.GetHexByteString(path);
 700   Status error(llvm::sys::fs::remove(path));
 701   StreamString response;
 702   response.Printf("F%u,%u", error.GetError(), error.GetError());
 703   return SendPacketNoLock(response.GetString());
 704 }
 705
 706 GDBRemoteCommunication::PacketResult
 707 GDBRemoteCommunicationServerCommon::Handle_qPlatform_shell(
 708     StringExtractorGDBRemote &packet) {
 709   packet.SetFilePos(::strlen("qPlatform_shell:"));
 710   std::string path;
 711   std::string working_dir;
 712   packet.GetHexByteStringTerminatedBy(path, ',');
 713   if (!path.empty()) {
 714     if (packet.GetChar() == ',') {
 715       // FIXME: add timeout to qPlatform_shell packet
 716       // uint32_t timeout = packet.GetHexMaxU32(false, 32);
 717       if (packet.GetChar() == ',')
 718         packet.GetHexByteString(working_dir);
 719       int status, signo;
 720       std::string output;
 721       FileSpec working_spec(working_dir);
 722       FileSystem::Instance().Resolve(working_spec);
 723       Status err =
 724           Host::RunShellCommand(path.c_str(), working_spec, &status, &signo,
 725                                 &output, std::chrono::seconds(10));
 726       StreamGDBRemote response;
 727       if (err.Fail()) {
 728         response.PutCString("F,");
 729         response.PutHex32(UINT32_MAX);
 730       } else {
 731         response.PutCString("F,");
 732         response.PutHex32(status);
 733         response.PutChar(',');
 734         response.PutHex32(signo);
 735         response.PutChar(',');
 736         response.PutEscapedBytes(output.c_str(), output.size());
 737       }
 738       return SendPacketNoLock(response.GetString());
 739     }
 740   }
 741   return SendErrorResponse(24);
 742 }
 743
 744 GDBRemoteCommunication::PacketResult
 745 GDBRemoteCommunicationServerCommon::Handle_vFile_Stat(
 746     StringExtractorGDBRemote &packet) {
 747   return SendUnimplementedResponse(
 748       "GDBRemoteCommunicationServerCommon::Handle_vFile_Stat() unimplemented");
 749 }
 750
 751 GDBRemoteCommunication::PacketResult
 752 GDBRemoteCommunicationServerCommon::Handle_vFile_MD5(
 753     StringExtractorGDBRemote &packet) {
 754   packet.SetFilePos(::strlen("vFile:MD5:"));
 755   std::string path;
 756   packet.GetHexByteString(path);
 757   if (!path.empty()) {
 758     StreamGDBRemote response;
 759     auto Result = llvm::sys::fs::md5_contents(path);
 760     if (!Result) {
 761       response.PutCString("F,");
 762       response.PutCString("x");
 763     } else {
 764       response.PutCString("F,");
 765       response.PutHex64(Result->low());
 766       response.PutHex64(Result->high());
 767     }
 768     return SendPacketNoLock(response.GetString());
 769   }
 770   return SendErrorResponse(25);
 771 }
 772
 773 GDBRemoteCommunication::PacketResult
 774 GDBRemoteCommunicationServerCommon::Handle_qPlatform_mkdir(
 775     StringExtractorGDBRemote &packet) {
 776   packet.SetFilePos(::strlen("qPlatform_mkdir:"));
 777   mode_t mode = packet.GetHexMaxU32(false, UINT32_MAX);
 778   if (packet.GetChar() == ',') {
 779     std::string path;
 780     packet.GetHexByteString(path);
 781     Status error(llvm::sys::fs::create_directory(path, mode));
 782
 783     StreamGDBRemote response;
 784     response.Printf("F%u", error.GetError());
 785
 786     return SendPacketNoLock(response.GetString());
 787   }
 788   return SendErrorResponse(20);
 789 }
 790
 791 GDBRemoteCommunication::PacketResult
 792 GDBRemoteCommunicationServerCommon::Handle_qPlatform_chmod(
 793     StringExtractorGDBRemote &packet) {
 794   packet.SetFilePos(::strlen("qPlatform_chmod:"));
 795
 796   auto perms =
 797       static_cast<llvm::sys::fs::perms>(packet.GetHexMaxU32(false, UINT32_MAX));
 798   if (packet.GetChar() == ',') {
 799     std::string path;
 800     packet.GetHexByteString(path);
 801     Status error(llvm::sys::fs::setPermissions(path, perms));
 802
 803     StreamGDBRemote response;
 804     response.Printf("F%u", error.GetError());
 805
 806     return SendPacketNoLock(response.GetString());
 807   }
 808   return SendErrorResponse(19);
 809 }
 810
 811 GDBRemoteCommunication::PacketResult
 812 GDBRemoteCommunicationServerCommon::Handle_qSupported(
 813     StringExtractorGDBRemote &packet) {
 814   StreamGDBRemote response;
 815
 816   // Features common to lldb-platform and llgs.
 817   uint32_t max_packet_size = 128 * 1024; // 128KBytes is a reasonable max packet
 818                                          // size--debugger can always use less
 819   response.Printf("PacketSize=%x", max_packet_size);
 820
 821   response.PutCString(";QStartNoAckMode+");
 822   response.PutCString(";QThreadSuffixSupported+");
 823   response.PutCString(";QListThreadsInStopReply+");
 824   response.PutCString(";qEcho+");
 825 #if defined(__linux__) || defined(__NetBSD__)
 826   response.PutCString(";QPassSignals+");
 827   response.PutCString(";qXfer:auxv:read+");
 828 #endif
 829
 830   return SendPacketNoLock(response.GetString());
 831 }
 832
 833 GDBRemoteCommunication::PacketResult
 834 GDBRemoteCommunicationServerCommon::Handle_QThreadSuffixSupported(
 835     StringExtractorGDBRemote &packet) {
 836   m_thread_suffix_supported = true;
 837   return SendOKResponse();
 838 }
 839
 840 GDBRemoteCommunication::PacketResult
 841 GDBRemoteCommunicationServerCommon::Handle_QListThreadsInStopReply(
 842     StringExtractorGDBRemote &packet) {
 843   m_list_threads_in_stop_reply = true;
 844   return SendOKResponse();
 845 }
 846
 847 GDBRemoteCommunication::PacketResult
 848 GDBRemoteCommunicationServerCommon::Handle_QSetDetachOnError(
 849     StringExtractorGDBRemote &packet) {
 850   packet.SetFilePos(::strlen("QSetDetachOnError:"));
 851   if (packet.GetU32(0))
 852     m_process_launch_info.GetFlags().Set(eLaunchFlagDetachOnError);
 853   else
 854     m_process_launch_info.GetFlags().Clear(eLaunchFlagDetachOnError);
 855   return SendOKResponse();
 856 }
 857
 858 GDBRemoteCommunication::PacketResult
 859 GDBRemoteCommunicationServerCommon::Handle_QStartNoAckMode(
 860     StringExtractorGDBRemote &packet) {
 861   // Send response first before changing m_send_acks to we ack this packet
 862   PacketResult packet_result = SendOKResponse();
 863   m_send_acks = false;
 864   return packet_result;
 865 }
 866
 867 GDBRemoteCommunication::PacketResult
 868 GDBRemoteCommunicationServerCommon::Handle_QSetSTDIN(
 869     StringExtractorGDBRemote &packet) {
 870   packet.SetFilePos(::strlen("QSetSTDIN:"));
 871   FileAction file_action;
 872   std::string path;
 873   packet.GetHexByteString(path);
 874   const bool read = true;
 875   const bool write = false;
 876   if (file_action.Open(STDIN_FILENO, FileSpec(path), read, write)) {
 877     m_process_launch_info.AppendFileAction(file_action);
 878     return SendOKResponse();
 879   }
 880   return SendErrorResponse(15);
 881 }
 882
 883 GDBRemoteCommunication::PacketResult
 884 GDBRemoteCommunicationServerCommon::Handle_QSetSTDOUT(
 885     StringExtractorGDBRemote &packet) {
 886   packet.SetFilePos(::strlen("QSetSTDOUT:"));
 887   FileAction file_action;
 888   std::string path;
 889   packet.GetHexByteString(path);
 890   const bool read = false;
 891   const bool write = true;
 892   if (file_action.Open(STDOUT_FILENO, FileSpec(path), read, write)) {
 893     m_process_launch_info.AppendFileAction(file_action);
 894     return SendOKResponse();
 895   }
 896   return SendErrorResponse(16);
 897 }
 898
 899 GDBRemoteCommunication::PacketResult
 900 GDBRemoteCommunicationServerCommon::Handle_QSetSTDERR(
 901     StringExtractorGDBRemote &packet) {
 902   packet.SetFilePos(::strlen("QSetSTDERR:"));
 903   FileAction file_action;
 904   std::string path;
 905   packet.GetHexByteString(path);
 906   const bool read = false;
 907   const bool write = true;
 908   if (file_action.Open(STDERR_FILENO, FileSpec(path), read, write)) {
 909     m_process_launch_info.AppendFileAction(file_action);
 910     return SendOKResponse();
 911   }
 912   return SendErrorResponse(17);
 913 }
 914
 915 GDBRemoteCommunication::PacketResult
 916 GDBRemoteCommunicationServerCommon::Handle_qLaunchSuccess(
 917     StringExtractorGDBRemote &packet) {
 918   if (m_process_launch_error.Success())
 919     return SendOKResponse();
 920   StreamString response;
 921   response.PutChar('E');
 922   response.PutCString(m_process_launch_error.AsCString("<unknown error>"));
 923   return SendPacketNoLock(response.GetString());
 924 }
 925
 926 GDBRemoteCommunication::PacketResult
 927 GDBRemoteCommunicationServerCommon::Handle_QEnvironment(
 928     StringExtractorGDBRemote &packet) {
 929   packet.SetFilePos(::strlen("QEnvironment:"));
 930   const uint32_t bytes_left = packet.GetBytesLeft();
 931   if (bytes_left > 0) {
 932     m_process_launch_info.GetEnvironment().insert(packet.Peek());
 933     return SendOKResponse();
 934   }
 935   return SendErrorResponse(12);
 936 }
 937
 938 GDBRemoteCommunication::PacketResult
 939 GDBRemoteCommunicationServerCommon::Handle_QEnvironmentHexEncoded(
 940     StringExtractorGDBRemote &packet) {
 941   packet.SetFilePos(::strlen("QEnvironmentHexEncoded:"));
 942   const uint32_t bytes_left = packet.GetBytesLeft();
 943   if (bytes_left > 0) {
 944     std::string str;
 945     packet.GetHexByteString(str);
 946     m_process_launch_info.GetEnvironment().insert(str);
 947     return SendOKResponse();
 948   }
 949   return SendErrorResponse(12);
 950 }
 951
 952 GDBRemoteCommunication::PacketResult
 953 GDBRemoteCommunicationServerCommon::Handle_QLaunchArch(
 954     StringExtractorGDBRemote &packet) {
 955   packet.SetFilePos(::strlen("QLaunchArch:"));
 956   const uint32_t bytes_left = packet.GetBytesLeft();
 957   if (bytes_left > 0) {
 958     const char *arch_triple = packet.Peek();
 959     m_process_launch_info.SetArchitecture(
 960         HostInfo::GetAugmentedArchSpec(arch_triple));
 961     return SendOKResponse();
 962   }
 963   return SendErrorResponse(13);
 964 }
 965
 966 GDBRemoteCommunication::PacketResult
 967 GDBRemoteCommunicationServerCommon::Handle_A(StringExtractorGDBRemote &packet) {
 968   // The 'A' packet is the most over designed packet ever here with redundant
 969   // argument indexes, redundant argument lengths and needed hex encoded
 970   // argument string values. Really all that is needed is a comma separated hex
 971   // encoded argument value list, but we will stay true to the documented
 972   // version of the 'A' packet here...
 973
 974   Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
 975   int actual_arg_index = 0;
 976
 977   packet.SetFilePos(1); // Skip the 'A'
 978   bool success = true;
 979   while (success && packet.GetBytesLeft() > 0) {
 980     // Decode the decimal argument string length. This length is the number of
 981     // hex nibbles in the argument string value.
 982     const uint32_t arg_len = packet.GetU32(UINT32_MAX);
 983     if (arg_len == UINT32_MAX)
 984       success = false;
 985     else {
 986       // Make sure the argument hex string length is followed by a comma
 987       if (packet.GetChar() != ',')
 988         success = false;
 989       else {
 990         // Decode the argument index. We ignore this really because who would
 991         // really send down the arguments in a random order???
 992         const uint32_t arg_idx = packet.GetU32(UINT32_MAX);
 993         if (arg_idx == UINT32_MAX)
 994           success = false;
 995         else {
 996           // Make sure the argument index is followed by a comma
 997           if (packet.GetChar() != ',')
 998             success = false;
 999           else {
1000             // Decode the argument string value from hex bytes back into a UTF8
1001             // string and make sure the length matches the one supplied in the
1002             // packet
1003             std::string arg;
1004             if (packet.GetHexByteStringFixedLength(arg, arg_len) !=
1005                 (arg_len / 2))
1006               success = false;
1007             else {
1008               // If there are any bytes left
1009               if (packet.GetBytesLeft()) {
1010                 if (packet.GetChar() != ',')
1011                   success = false;
1012               }
1013
1014               if (success) {
1015                 if (arg_idx == 0)
1016                   m_process_launch_info.GetExecutableFile().SetFile(
1017                       arg, FileSpec::Style::native);
1018                 m_process_launch_info.GetArguments().AppendArgument(arg);
1019                 if (log)
1020                   log->Printf("LLGSPacketHandler::%s added arg %d: \"%s\"",
1021                               __FUNCTION__, actual_arg_index, arg.c_str());
1022                 ++actual_arg_index;
1023               }
1024             }
1025           }
1026         }
1027       }
1028     }
1029   }
1030
1031   if (success) {
1032     m_process_launch_error = LaunchProcess();
1033     if (m_process_launch_error.Success())
1034       return SendOKResponse();
1035     LLDB_LOG(log, "failed to launch exe: {0}", m_process_launch_error);
1036   }
1037   return SendErrorResponse(8);
1038 }
1039
1040 GDBRemoteCommunication::PacketResult
1041 GDBRemoteCommunicationServerCommon::Handle_qEcho(
1042     StringExtractorGDBRemote &packet) {
1043   // Just echo back the exact same packet for qEcho...
1044   return SendPacketNoLock(packet.GetStringRef());
1045 }
1046
1047 GDBRemoteCommunication::PacketResult
1048 GDBRemoteCommunicationServerCommon::Handle_qModuleInfo(
1049     StringExtractorGDBRemote &packet) {
1050   packet.SetFilePos(::strlen("qModuleInfo:"));
1051
1052   std::string module_path;
1053   packet.GetHexByteStringTerminatedBy(module_path, ';');
1054   if (module_path.empty())
1055     return SendErrorResponse(1);
1056
1057   if (packet.GetChar() != ';')
1058     return SendErrorResponse(2);
1059
1060   std::string triple;
1061   packet.GetHexByteString(triple);
1062
1063   ModuleSpec matched_module_spec = GetModuleInfo(module_path, triple);
1064   if (!matched_module_spec.GetFileSpec())
1065     return SendErrorResponse(3);
1066
1067   const auto file_offset = matched_module_spec.GetObjectOffset();
1068   const auto file_size = matched_module_spec.GetObjectSize();
1069   const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
1070
1071   StreamGDBRemote response;
1072
1073   if (uuid_str.empty()) {
1074     auto Result = llvm::sys::fs::md5_contents(
1075         matched_module_spec.GetFileSpec().GetPath());
1076     if (!Result)
1077       return SendErrorResponse(5);
1078     response.PutCString("md5:");
1079     response.PutStringAsRawHex8(Result->digest());
1080   } else {
1081     response.PutCString("uuid:");
1082     response.PutStringAsRawHex8(uuid_str);
1083   }
1084   response.PutChar(';');
1085
1086   const auto &module_arch = matched_module_spec.GetArchitecture();
1087   response.PutCString("triple:");
1088   response.PutStringAsRawHex8(module_arch.GetTriple().getTriple());
1089   response.PutChar(';');
1090
1091   response.PutCString("file_path:");
1092   response.PutStringAsRawHex8(matched_module_spec.GetFileSpec().GetCString());
1093   response.PutChar(';');
1094   response.PutCString("file_offset:");
1095   response.PutHex64(file_offset);
1096   response.PutChar(';');
1097   response.PutCString("file_size:");
1098   response.PutHex64(file_size);
1099   response.PutChar(';');
1100
1101   return SendPacketNoLock(response.GetString());
1102 }
1103
1104 GDBRemoteCommunication::PacketResult
1105 GDBRemoteCommunicationServerCommon::Handle_jModulesInfo(
1106     StringExtractorGDBRemote &packet) {
1107   packet.SetFilePos(::strlen("jModulesInfo:"));
1108
1109   StructuredData::ObjectSP object_sp = StructuredData::ParseJSON(packet.Peek());
1110   if (!object_sp)
1111     return SendErrorResponse(1);
1112
1113   StructuredData::Array *packet_array = object_sp->GetAsArray();
1114   if (!packet_array)
1115     return SendErrorResponse(2);
1116
1117   JSONArray::SP response_array_sp = std::make_shared<JSONArray>();
1118   for (size_t i = 0; i < packet_array->GetSize(); ++i) {
1119     StructuredData::Dictionary *query =
1120         packet_array->GetItemAtIndex(i)->GetAsDictionary();
1121     if (!query)
1122       continue;
1123     llvm::StringRef file, triple;
1124     if (!query->GetValueForKeyAsString("file", file) ||
1125         !query->GetValueForKeyAsString("triple", triple))
1126       continue;
1127
1128     ModuleSpec matched_module_spec = GetModuleInfo(file, triple);
1129     if (!matched_module_spec.GetFileSpec())
1130       continue;
1131
1132     const auto file_offset = matched_module_spec.GetObjectOffset();
1133     const auto file_size = matched_module_spec.GetObjectSize();
1134     const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
1135
1136     if (uuid_str.empty())
1137       continue;
1138
1139     JSONObject::SP response = std::make_shared<JSONObject>();
1140     response_array_sp->AppendObject(response);
1141     response->SetObject("uuid", std::make_shared<JSONString>(uuid_str));
1142     response->SetObject(
1143         "triple",
1144         std::make_shared<JSONString>(
1145             matched_module_spec.GetArchitecture().GetTriple().getTriple()));
1146     response->SetObject("file_path",
1147                         std::make_shared<JSONString>(
1148                             matched_module_spec.GetFileSpec().GetPath()));
1149     response->SetObject("file_offset",
1150                         std::make_shared<JSONNumber>(file_offset));
1151     response->SetObject("file_size", std::make_shared<JSONNumber>(file_size));
1152   }
1153
1154   StreamString response;
1155   response_array_sp->Write(response);
1156   StreamGDBRemote escaped_response;
1157   escaped_response.PutEscapedBytes(response.GetString().data(),
1158                                    response.GetSize());
1159   return SendPacketNoLock(escaped_response.GetString());
1160 }
1161
1162 void GDBRemoteCommunicationServerCommon::CreateProcessInfoResponse(
1163     const ProcessInstanceInfo &proc_info, StreamString &response) {
1164   response.Printf(
1165       "pid:%" PRIu64 ";ppid:%" PRIu64 ";uid:%i;gid:%i;euid:%i;egid:%i;",
1166       proc_info.GetProcessID(), proc_info.GetParentProcessID(),
1167       proc_info.GetUserID(), proc_info.GetGroupID(),
1168       proc_info.GetEffectiveUserID(), proc_info.GetEffectiveGroupID());
1169   response.PutCString("name:");
1170   response.PutStringAsRawHex8(proc_info.GetExecutableFile().GetCString());
1171   response.PutChar(';');
1172   const ArchSpec &proc_arch = proc_info.GetArchitecture();
1173   if (proc_arch.IsValid()) {
1174     const llvm::Triple &proc_triple = proc_arch.GetTriple();
1175     response.PutCString("triple:");
1176     response.PutStringAsRawHex8(proc_triple.getTriple());
1177     response.PutChar(';');
1178   }
1179 }
1180
1181 void GDBRemoteCommunicationServerCommon::
1182     CreateProcessInfoResponse_DebugServerStyle(
1183         const ProcessInstanceInfo &proc_info, StreamString &response) {
1184   response.Printf("pid:%" PRIx64 ";parent-pid:%" PRIx64
1185                   ";real-uid:%x;real-gid:%x;effective-uid:%x;effective-gid:%x;",
1186                   proc_info.GetProcessID(), proc_info.GetParentProcessID(),
1187                   proc_info.GetUserID(), proc_info.GetGroupID(),
1188                   proc_info.GetEffectiveUserID(),
1189                   proc_info.GetEffectiveGroupID());
1190
1191   const ArchSpec &proc_arch = proc_info.GetArchitecture();
1192   if (proc_arch.IsValid()) {
1193     const llvm::Triple &proc_triple = proc_arch.GetTriple();
1194 #if defined(__APPLE__)
1195     // We'll send cputype/cpusubtype.
1196     const uint32_t cpu_type = proc_arch.GetMachOCPUType();
1197     if (cpu_type != 0)
1198       response.Printf("cputype:%" PRIx32 ";", cpu_type);
1199
1200     const uint32_t cpu_subtype = proc_arch.GetMachOCPUSubType();
1201     if (cpu_subtype != 0)
1202       response.Printf("cpusubtype:%" PRIx32 ";", cpu_subtype);
1203
1204     const std::string vendor = proc_triple.getVendorName();
1205     if (!vendor.empty())
1206       response.Printf("vendor:%s;", vendor.c_str());
1207 #else
1208     // We'll send the triple.
1209     response.PutCString("triple:");
1210     response.PutStringAsRawHex8(proc_triple.getTriple());
1211     response.PutChar(';');
1212 #endif
1213     std::string ostype = proc_triple.getOSName();
1214     // Adjust so ostype reports ios for Apple/ARM and Apple/ARM64.
1215     if (proc_triple.getVendor() == llvm::Triple::Apple) {
1216       switch (proc_triple.getArch()) {
1217       case llvm::Triple::arm:
1218       case llvm::Triple::thumb:
1219       case llvm::Triple::aarch64:
1220         ostype = "ios";
1221         break;
1222       default:
1223         // No change.
1224         break;
1225       }
1226     }
1227     response.Printf("ostype:%s;", ostype.c_str());
1228
1229     switch (proc_arch.GetByteOrder()) {
1230     case lldb::eByteOrderLittle:
1231       response.PutCString("endian:little;");
1232       break;
1233     case lldb::eByteOrderBig:
1234       response.PutCString("endian:big;");
1235       break;
1236     case lldb::eByteOrderPDP:
1237       response.PutCString("endian:pdp;");
1238       break;
1239     default:
1240       // Nothing.
1241       break;
1242     }
1243     // In case of MIPS64, pointer size is depend on ELF ABI For N32 the pointer
1244     // size is 4 and for N64 it is 8
1245     std::string abi = proc_arch.GetTargetABI();
1246     if (!abi.empty())
1247       response.Printf("elf_abi:%s;", abi.c_str());
1248     response.Printf("ptrsize:%d;", proc_arch.GetAddressByteSize());
1249   }
1250 }
1251
1252 FileSpec GDBRemoteCommunicationServerCommon::FindModuleFile(
1253     const std::string &module_path, const ArchSpec &arch) {
1254 #ifdef __ANDROID__
1255   return HostInfoAndroid::ResolveLibraryPath(module_path, arch);
1256 #else
1257   FileSpec file_spec(module_path);
1258   FileSystem::Instance().Resolve(file_spec);
1259   return file_spec;
1260 #endif
1261 }
1262
1263 ModuleSpec
1264 GDBRemoteCommunicationServerCommon::GetModuleInfo(llvm::StringRef module_path,
1265                                                   llvm::StringRef triple) {
1266   ArchSpec arch(triple);
1267
1268   FileSpec req_module_path_spec(module_path);
1269   FileSystem::Instance().Resolve(req_module_path_spec);
1270
1271   const FileSpec module_path_spec =
1272       FindModuleFile(req_module_path_spec.GetPath(), arch);
1273   const ModuleSpec module_spec(module_path_spec, arch);
1274
1275   ModuleSpecList module_specs;
1276   if (!ObjectFile::GetModuleSpecifications(module_path_spec, 0, 0,
1277                                            module_specs))
1278     return ModuleSpec();
1279
1280   ModuleSpec matched_module_spec;
1281   if (!module_specs.FindMatchingModuleSpec(module_spec, matched_module_spec))
1282     return ModuleSpec();
1283
1284   return matched_module_spec;
1285 }