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

   1 //===-- GDBRemoteCommunicationServerCommon.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 "GDBRemoteCommunicationServerCommon.h"
  11
  12 #include <errno.h>
  13
  14
  15 #ifdef __APPLE__
  16 #include <TargetConditionals.h>
  17 #endif
  18
  19 #include <chrono>
  20 #include <cstring>
  21
  22 #include "lldb/Core/ModuleSpec.h"
  23 #include "lldb/Host/Config.h"
  24 #include "lldb/Host/File.h"
  25 #include "lldb/Host/FileSystem.h"
  26 #include "lldb/Host/Host.h"
  27 #include "lldb/Host/HostInfo.h"
  28 #include "lldb/Host/SafeMachO.h"
  29 #include "lldb/Interpreter/OptionArgParser.h"
  30 #include "lldb/Symbol/ObjectFile.h"
  31 #include "lldb/Target/FileAction.h"
  32 #include "lldb/Target/Platform.h"
  33 #include "lldb/Target/Process.h"
  34 #include "lldb/Utility/Endian.h"
  35 #include "lldb/Utility/JSON.h"
  36 #include "lldb/Utility/Log.h"
  37 #include "lldb/Utility/StreamGDBRemote.h"
  38 #include "lldb/Utility/StreamString.h"
  39 #include "llvm/ADT/Triple.h"
  40
  41 #include "ProcessGDBRemoteLog.h"
  42 #include "lldb/Utility/StringExtractorGDBRemote.h"
  43
  44 #ifdef __ANDROID__
  45 #include "lldb/Host/android/HostInfoAndroid.h"
  46 #endif
  47
  48 #include "llvm/ADT/StringSwitch.h"
  49
  50 using namespace lldb;
  51 using namespace lldb_private;
  52 using namespace lldb_private::process_gdb_remote;
  53
  54 #ifdef __ANDROID__
  55 const static uint32_t g_default_packet_timeout_sec = 20; // seconds
  56 #else
  57 const static uint32_t g_default_packet_timeout_sec = 0; // not specified
  58 #endif
  59
  60 //----------------------------------------------------------------------
  61 // GDBRemoteCommunicationServerCommon constructor
  62 //----------------------------------------------------------------------
  63 GDBRemoteCommunicationServerCommon::GDBRemoteCommunicationServerCommon(
  64     const char *comm_name, const char *listener_name)
  65     : GDBRemoteCommunicationServer(comm_name, listener_name),
  66       m_process_launch_info(), m_process_launch_error(), m_proc_infos(),
  67       m_proc_infos_index(0), m_thread_suffix_supported(false),
  68       m_list_threads_in_stop_reply(false) {
  69   RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_A,
  70                                 &GDBRemoteCommunicationServerCommon::Handle_A);
  71   RegisterMemberFunctionHandler(
  72       StringExtractorGDBRemote::eServerPacketType_QEnvironment,
  73       &GDBRemoteCommunicationServerCommon::Handle_QEnvironment);
  74   RegisterMemberFunctionHandler(
  75       StringExtractorGDBRemote::eServerPacketType_QEnvironmentHexEncoded,
  76       &GDBRemoteCommunicationServerCommon::Handle_QEnvironmentHexEncoded);
  77   RegisterMemberFunctionHandler(
  78       StringExtractorGDBRemote::eServerPacketType_qfProcessInfo,
  79       &GDBRemoteCommunicationServerCommon::Handle_qfProcessInfo);
  80   RegisterMemberFunctionHandler(
  81       StringExtractorGDBRemote::eServerPacketType_qGroupName,
  82       &GDBRemoteCommunicationServerCommon::Handle_qGroupName);
  83   RegisterMemberFunctionHandler(
  84       StringExtractorGDBRemote::eServerPacketType_qHostInfo,
  85       &GDBRemoteCommunicationServerCommon::Handle_qHostInfo);
  86   RegisterMemberFunctionHandler(
  87       StringExtractorGDBRemote::eServerPacketType_QLaunchArch,
  88       &GDBRemoteCommunicationServerCommon::Handle_QLaunchArch);
  89   RegisterMemberFunctionHandler(
  90       StringExtractorGDBRemote::eServerPacketType_qLaunchSuccess,
  91       &GDBRemoteCommunicationServerCommon::Handle_qLaunchSuccess);
  92   RegisterMemberFunctionHandler(
  93       StringExtractorGDBRemote::eServerPacketType_QListThreadsInStopReply,
  94       &GDBRemoteCommunicationServerCommon::Handle_QListThreadsInStopReply);
  95   RegisterMemberFunctionHandler(
  96       StringExtractorGDBRemote::eServerPacketType_qEcho,
  97       &GDBRemoteCommunicationServerCommon::Handle_qEcho);
  98   RegisterMemberFunctionHandler(
  99       StringExtractorGDBRemote::eServerPacketType_qModuleInfo,
 100       &GDBRemoteCommunicationServerCommon::Handle_qModuleInfo);
 101   RegisterMemberFunctionHandler(
 102       StringExtractorGDBRemote::eServerPacketType_jModulesInfo,
 103       &GDBRemoteCommunicationServerCommon::Handle_jModulesInfo);
 104   RegisterMemberFunctionHandler(
 105       StringExtractorGDBRemote::eServerPacketType_qPlatform_chmod,
 106       &GDBRemoteCommunicationServerCommon::Handle_qPlatform_chmod);
 107   RegisterMemberFunctionHandler(
 108       StringExtractorGDBRemote::eServerPacketType_qPlatform_mkdir,
 109       &GDBRemoteCommunicationServerCommon::Handle_qPlatform_mkdir);
 110   RegisterMemberFunctionHandler(
 111       StringExtractorGDBRemote::eServerPacketType_qPlatform_shell,
 112       &GDBRemoteCommunicationServerCommon::Handle_qPlatform_shell);
 113   RegisterMemberFunctionHandler(
 114       StringExtractorGDBRemote::eServerPacketType_qProcessInfoPID,
 115       &GDBRemoteCommunicationServerCommon::Handle_qProcessInfoPID);
 116   RegisterMemberFunctionHandler(
 117       StringExtractorGDBRemote::eServerPacketType_QSetDetachOnError,
 118       &GDBRemoteCommunicationServerCommon::Handle_QSetDetachOnError);
 119   RegisterMemberFunctionHandler(
 120       StringExtractorGDBRemote::eServerPacketType_QSetSTDERR,
 121       &GDBRemoteCommunicationServerCommon::Handle_QSetSTDERR);
 122   RegisterMemberFunctionHandler(
 123       StringExtractorGDBRemote::eServerPacketType_QSetSTDIN,
 124       &GDBRemoteCommunicationServerCommon::Handle_QSetSTDIN);
 125   RegisterMemberFunctionHandler(
 126       StringExtractorGDBRemote::eServerPacketType_QSetSTDOUT,
 127       &GDBRemoteCommunicationServerCommon::Handle_QSetSTDOUT);
 128   RegisterMemberFunctionHandler(
 129       StringExtractorGDBRemote::eServerPacketType_qSpeedTest,
 130       &GDBRemoteCommunicationServerCommon::Handle_qSpeedTest);
 131   RegisterMemberFunctionHandler(
 132       StringExtractorGDBRemote::eServerPacketType_qsProcessInfo,
 133       &GDBRemoteCommunicationServerCommon::Handle_qsProcessInfo);
 134   RegisterMemberFunctionHandler(
 135       StringExtractorGDBRemote::eServerPacketType_QStartNoAckMode,
 136       &GDBRemoteCommunicationServerCommon::Handle_QStartNoAckMode);
 137   RegisterMemberFunctionHandler(
 138       StringExtractorGDBRemote::eServerPacketType_qSupported,
 139       &GDBRemoteCommunicationServerCommon::Handle_qSupported);
 140   RegisterMemberFunctionHandler(
 141       StringExtractorGDBRemote::eServerPacketType_QThreadSuffixSupported,
 142       &GDBRemoteCommunicationServerCommon::Handle_QThreadSuffixSupported);
 143   RegisterMemberFunctionHandler(
 144       StringExtractorGDBRemote::eServerPacketType_qUserName,
 145       &GDBRemoteCommunicationServerCommon::Handle_qUserName);
 146   RegisterMemberFunctionHandler(
 147       StringExtractorGDBRemote::eServerPacketType_vFile_close,
 148       &GDBRemoteCommunicationServerCommon::Handle_vFile_Close);
 149   RegisterMemberFunctionHandler(
 150       StringExtractorGDBRemote::eServerPacketType_vFile_exists,
 151       &GDBRemoteCommunicationServerCommon::Handle_vFile_Exists);
 152   RegisterMemberFunctionHandler(
 153       StringExtractorGDBRemote::eServerPacketType_vFile_md5,
 154       &GDBRemoteCommunicationServerCommon::Handle_vFile_MD5);
 155   RegisterMemberFunctionHandler(
 156       StringExtractorGDBRemote::eServerPacketType_vFile_mode,
 157       &GDBRemoteCommunicationServerCommon::Handle_vFile_Mode);
 158   RegisterMemberFunctionHandler(
 159       StringExtractorGDBRemote::eServerPacketType_vFile_open,
 160       &GDBRemoteCommunicationServerCommon::Handle_vFile_Open);
 161   RegisterMemberFunctionHandler(
 162       StringExtractorGDBRemote::eServerPacketType_vFile_pread,
 163       &GDBRemoteCommunicationServerCommon::Handle_vFile_pRead);
 164   RegisterMemberFunctionHandler(
 165       StringExtractorGDBRemote::eServerPacketType_vFile_pwrite,
 166       &GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite);
 167   RegisterMemberFunctionHandler(
 168       StringExtractorGDBRemote::eServerPacketType_vFile_size,
 169       &GDBRemoteCommunicationServerCommon::Handle_vFile_Size);
 170   RegisterMemberFunctionHandler(
 171       StringExtractorGDBRemote::eServerPacketType_vFile_stat,
 172       &GDBRemoteCommunicationServerCommon::Handle_vFile_Stat);
 173   RegisterMemberFunctionHandler(
 174       StringExtractorGDBRemote::eServerPacketType_vFile_symlink,
 175       &GDBRemoteCommunicationServerCommon::Handle_vFile_symlink);
 176   RegisterMemberFunctionHandler(
 177       StringExtractorGDBRemote::eServerPacketType_vFile_unlink,
 178       &GDBRemoteCommunicationServerCommon::Handle_vFile_unlink);
 179 }
 180
 181 //----------------------------------------------------------------------
 182 // Destructor
 183 //----------------------------------------------------------------------
 184 GDBRemoteCommunicationServerCommon::~GDBRemoteCommunicationServerCommon() {}
 185
 186 GDBRemoteCommunication::PacketResult
 187 GDBRemoteCommunicationServerCommon::Handle_qHostInfo(
 188     StringExtractorGDBRemote &packet) {
 189   StreamString response;
 190
 191   // $cputype:16777223;cpusubtype:3;ostype:Darwin;vendor:apple;endian:little;ptrsize:8;#00
 192
 193   ArchSpec host_arch(HostInfo::GetArchitecture());
 194   const llvm::Triple &host_triple = host_arch.GetTriple();
 195   response.PutCString("triple:");
 196   response.PutCStringAsRawHex8(host_triple.getTriple().c_str());
 197   response.Printf(";ptrsize:%u;", host_arch.GetAddressByteSize());
 198
 199   const char *distribution_id = host_arch.GetDistributionId().AsCString();
 200   if (distribution_id) {
 201     response.PutCString("distribution_id:");
 202     response.PutCStringAsRawHex8(distribution_id);
 203     response.PutCString(";");
 204   }
 205
 206 #if defined(__APPLE__)
 207   // For parity with debugserver, we'll include the vendor key.
 208   response.PutCString("vendor:apple;");
 209
 210   // Send out MachO info.
 211   uint32_t cpu = host_arch.GetMachOCPUType();
 212   uint32_t sub = host_arch.GetMachOCPUSubType();
 213   if (cpu != LLDB_INVALID_CPUTYPE)
 214     response.Printf("cputype:%u;", cpu);
 215   if (sub != LLDB_INVALID_CPUTYPE)
 216     response.Printf("cpusubtype:%u;", sub);
 217
 218   if (cpu == llvm::MachO::CPU_TYPE_ARM
 219       || cpu == llvm::MachO::CPU_TYPE_ARM64) {
 220 // Indicate the OS type.
 221 #if defined(TARGET_OS_TV) && TARGET_OS_TV == 1
 222     response.PutCString("ostype:tvos;");
 223 #elif defined(TARGET_OS_WATCH) && TARGET_OS_WATCH == 1
 224     response.PutCString("ostype:watchos;");
 225 #elif defined(TARGET_OS_BRIDGE) && TARGET_OS_BRIDGE == 1
 226     response.PutCString("ostype:bridgeos;");
 227 #else
 228     response.PutCString("ostype:ios;");
 229 #endif
 230
 231     // On arm, we use "synchronous" watchpoints which means the exception is
 232     // delivered before the instruction executes.
 233     response.PutCString("watchpoint_exceptions_received:before;");
 234   } else {
 235     response.PutCString("ostype:macosx;");
 236     response.Printf("watchpoint_exceptions_received:after;");
 237   }
 238
 239 #else
 240   if (host_arch.GetMachine() == llvm::Triple::aarch64 ||
 241       host_arch.GetMachine() == llvm::Triple::aarch64_be ||
 242       host_arch.GetMachine() == llvm::Triple::arm ||
 243       host_arch.GetMachine() == llvm::Triple::armeb ||
 244       host_arch.GetMachine() == llvm::Triple::mips64 ||
 245       host_arch.GetMachine() == llvm::Triple::mips64el ||
 246       host_arch.GetMachine() == llvm::Triple::mips ||
 247       host_arch.GetMachine() == llvm::Triple::mipsel)
 248     response.Printf("watchpoint_exceptions_received:before;");
 249   else
 250     response.Printf("watchpoint_exceptions_received:after;");
 251 #endif
 252
 253   switch (endian::InlHostByteOrder()) {
 254   case eByteOrderBig:
 255     response.PutCString("endian:big;");
 256     break;
 257   case eByteOrderLittle:
 258     response.PutCString("endian:little;");
 259     break;
 260   case eByteOrderPDP:
 261     response.PutCString("endian:pdp;");
 262     break;
 263   default:
 264     response.PutCString("endian:unknown;");
 265     break;
 266   }
 267
 268   llvm::VersionTuple version = HostInfo::GetOSVersion();
 269   if (!version.empty()) {
 270     response.Format("os_version:{0}", version.getAsString());
 271     response.PutChar(';');
 272   }
 273
 274   std::string s;
 275   if (HostInfo::GetOSBuildString(s)) {
 276     response.PutCString("os_build:");
 277     response.PutCStringAsRawHex8(s.c_str());
 278     response.PutChar(';');
 279   }
 280   if (HostInfo::GetOSKernelDescription(s)) {
 281     response.PutCString("os_kernel:");
 282     response.PutCStringAsRawHex8(s.c_str());
 283     response.PutChar(';');
 284   }
 285
 286 #if defined(__APPLE__)
 287
 288 #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
 289   // For iOS devices, we are connected through a USB Mux so we never pretend to
 290   // actually have a hostname as far as the remote lldb that is connecting to
 291   // this lldb-platform is concerned
 292   response.PutCString("hostname:");
 293   response.PutCStringAsRawHex8("127.0.0.1");
 294   response.PutChar(';');
 295 #else  // #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
 296   if (HostInfo::GetHostname(s)) {
 297     response.PutCString("hostname:");
 298     response.PutCStringAsRawHex8(s.c_str());
 299     response.PutChar(';');
 300   }
 301 #endif // #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
 302
 303 #else  // #if defined(__APPLE__)
 304   if (HostInfo::GetHostname(s)) {
 305     response.PutCString("hostname:");
 306     response.PutCStringAsRawHex8(s.c_str());
 307     response.PutChar(';');
 308   }
 309 #endif // #if defined(__APPLE__)
 310
 311   if (g_default_packet_timeout_sec > 0)
 312     response.Printf("default_packet_timeout:%u;", g_default_packet_timeout_sec);
 313
 314   return SendPacketNoLock(response.GetString());
 315 }
 316
 317 GDBRemoteCommunication::PacketResult
 318 GDBRemoteCommunicationServerCommon::Handle_qProcessInfoPID(
 319     StringExtractorGDBRemote &packet) {
 320   // Packet format: "qProcessInfoPID:%i" where %i is the pid
 321   packet.SetFilePos(::strlen("qProcessInfoPID:"));
 322   lldb::pid_t pid = packet.GetU32(LLDB_INVALID_PROCESS_ID);
 323   if (pid != LLDB_INVALID_PROCESS_ID) {
 324     ProcessInstanceInfo proc_info;
 325     if (Host::GetProcessInfo(pid, proc_info)) {
 326       StreamString response;
 327       CreateProcessInfoResponse(proc_info, response);
 328       return SendPacketNoLock(response.GetString());
 329     }
 330   }
 331   return SendErrorResponse(1);
 332 }
 333
 334 GDBRemoteCommunication::PacketResult
 335 GDBRemoteCommunicationServerCommon::Handle_qfProcessInfo(
 336     StringExtractorGDBRemote &packet) {
 337   m_proc_infos_index = 0;
 338   m_proc_infos.Clear();
 339
 340   ProcessInstanceInfoMatch match_info;
 341   packet.SetFilePos(::strlen("qfProcessInfo"));
 342   if (packet.GetChar() == ':') {
 343     llvm::StringRef key;
 344     llvm::StringRef value;
 345     while (packet.GetNameColonValue(key, value)) {
 346       bool success = true;
 347       if (key.equals("name")) {
 348         StringExtractor extractor(value);
 349         std::string file;
 350         extractor.GetHexByteString(file);
 351         match_info.GetProcessInfo().GetExecutableFile().SetFile(
 352             file, FileSpec::Style::native);
 353       } else if (key.equals("name_match")) {
 354         NameMatch name_match = llvm::StringSwitch<NameMatch>(value)
 355                                    .Case("equals", NameMatch::Equals)
 356                                    .Case("starts_with", NameMatch::StartsWith)
 357                                    .Case("ends_with", NameMatch::EndsWith)
 358                                    .Case("contains", NameMatch::Contains)
 359                                    .Case("regex", NameMatch::RegularExpression)
 360                                    .Default(NameMatch::Ignore);
 361         match_info.SetNameMatchType(name_match);
 362         if (name_match == NameMatch::Ignore)
 363           return SendErrorResponse(2);
 364       } else if (key.equals("pid")) {
 365         lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
 366         if (value.getAsInteger(0, pid))
 367           return SendErrorResponse(2);
 368         match_info.GetProcessInfo().SetProcessID(pid);
 369       } else if (key.equals("parent_pid")) {
 370         lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
 371         if (value.getAsInteger(0, pid))
 372           return SendErrorResponse(2);
 373         match_info.GetProcessInfo().SetParentProcessID(pid);
 374       } else if (key.equals("uid")) {
 375         uint32_t uid = UINT32_MAX;
 376         if (value.getAsInteger(0, uid))
 377           return SendErrorResponse(2);
 378         match_info.GetProcessInfo().SetUserID(uid);
 379       } else if (key.equals("gid")) {
 380         uint32_t gid = UINT32_MAX;
 381         if (value.getAsInteger(0, gid))
 382           return SendErrorResponse(2);
 383         match_info.GetProcessInfo().SetGroupID(gid);
 384       } else if (key.equals("euid")) {
 385         uint32_t uid = UINT32_MAX;
 386         if (value.getAsInteger(0, uid))
 387           return SendErrorResponse(2);
 388         match_info.GetProcessInfo().SetEffectiveUserID(uid);
 389       } else if (key.equals("egid")) {
 390         uint32_t gid = UINT32_MAX;
 391         if (value.getAsInteger(0, gid))
 392           return SendErrorResponse(2);
 393         match_info.GetProcessInfo().SetEffectiveGroupID(gid);
 394       } else if (key.equals("all_users")) {
 395         match_info.SetMatchAllUsers(
 396             OptionArgParser::ToBoolean(value, false, &success));
 397       } else if (key.equals("triple")) {
 398         match_info.GetProcessInfo().GetArchitecture() =
 399             HostInfo::GetAugmentedArchSpec(value);
 400       } else {
 401         success = false;
 402       }
 403
 404       if (!success)
 405         return SendErrorResponse(2);
 406     }
 407   }
 408
 409   if (Host::FindProcesses(match_info, m_proc_infos)) {
 410     // We found something, return the first item by calling the get subsequent
 411     // process info packet handler...
 412     return Handle_qsProcessInfo(packet);
 413   }
 414   return SendErrorResponse(3);
 415 }
 416
 417 GDBRemoteCommunication::PacketResult
 418 GDBRemoteCommunicationServerCommon::Handle_qsProcessInfo(
 419     StringExtractorGDBRemote &packet) {
 420   if (m_proc_infos_index < m_proc_infos.GetSize()) {
 421     StreamString response;
 422     CreateProcessInfoResponse(
 423         m_proc_infos.GetProcessInfoAtIndex(m_proc_infos_index), response);
 424     ++m_proc_infos_index;
 425     return SendPacketNoLock(response.GetString());
 426   }
 427   return SendErrorResponse(4);
 428 }
 429
 430 GDBRemoteCommunication::PacketResult
 431 GDBRemoteCommunicationServerCommon::Handle_qUserName(
 432     StringExtractorGDBRemote &packet) {
 433 #if !defined(LLDB_DISABLE_POSIX)
 434   Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
 435   if (log)
 436     log->Printf("GDBRemoteCommunicationServerCommon::%s begin", __FUNCTION__);
 437
 438   // Packet format: "qUserName:%i" where %i is the uid
 439   packet.SetFilePos(::strlen("qUserName:"));
 440   uint32_t uid = packet.GetU32(UINT32_MAX);
 441   if (uid != UINT32_MAX) {
 442     std::string name;
 443     if (HostInfo::LookupUserName(uid, name)) {
 444       StreamString response;
 445       response.PutCStringAsRawHex8(name.c_str());
 446       return SendPacketNoLock(response.GetString());
 447     }
 448   }
 449   if (log)
 450     log->Printf("GDBRemoteCommunicationServerCommon::%s end", __FUNCTION__);
 451 #endif
 452   return SendErrorResponse(5);
 453 }
 454
 455 GDBRemoteCommunication::PacketResult
 456 GDBRemoteCommunicationServerCommon::Handle_qGroupName(
 457     StringExtractorGDBRemote &packet) {
 458 #if !defined(LLDB_DISABLE_POSIX)
 459   // Packet format: "qGroupName:%i" where %i is the gid
 460   packet.SetFilePos(::strlen("qGroupName:"));
 461   uint32_t gid = packet.GetU32(UINT32_MAX);
 462   if (gid != UINT32_MAX) {
 463     std::string name;
 464     if (HostInfo::LookupGroupName(gid, name)) {
 465       StreamString response;
 466       response.PutCStringAsRawHex8(name.c_str());
 467       return SendPacketNoLock(response.GetString());
 468     }
 469   }
 470 #endif
 471   return SendErrorResponse(6);
 472 }
 473
 474 GDBRemoteCommunication::PacketResult
 475 GDBRemoteCommunicationServerCommon::Handle_qSpeedTest(
 476     StringExtractorGDBRemote &packet) {
 477   packet.SetFilePos(::strlen("qSpeedTest:"));
 478
 479   llvm::StringRef key;
 480   llvm::StringRef value;
 481   bool success = packet.GetNameColonValue(key, value);
 482   if (success && key.equals("response_size")) {
 483     uint32_t response_size = 0;
 484     if (!value.getAsInteger(0, response_size)) {
 485       if (response_size == 0)
 486         return SendOKResponse();
 487       StreamString response;
 488       uint32_t bytes_left = response_size;
 489       response.PutCString("data:");
 490       while (bytes_left > 0) {
 491         if (bytes_left >= 26) {
 492           response.PutCString("ABCDEFGHIJKLMNOPQRSTUVWXYZ");
 493           bytes_left -= 26;
 494         } else {
 495           response.Printf("%*.*s;", bytes_left, bytes_left,
 496                           "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
 497           bytes_left = 0;
 498         }
 499       }
 500       return SendPacketNoLock(response.GetString());
 501     }
 502   }
 503   return SendErrorResponse(7);
 504 }
 505
 506 GDBRemoteCommunication::PacketResult
 507 GDBRemoteCommunicationServerCommon::Handle_vFile_Open(
 508     StringExtractorGDBRemote &packet) {
 509   packet.SetFilePos(::strlen("vFile:open:"));
 510   std::string path;
 511   packet.GetHexByteStringTerminatedBy(path, ',');
 512   if (!path.empty()) {
 513     if (packet.GetChar() == ',') {
 514       uint32_t flags =
 515           File::ConvertOpenOptionsForPOSIXOpen(packet.GetHexMaxU32(false, 0));
 516       if (packet.GetChar() == ',') {
 517         mode_t mode = packet.GetHexMaxU32(false, 0600);
 518         Status error;
 519         FileSpec path_spec(path);
 520         FileSystem::Instance().Resolve(path_spec);
 521         int fd = ::open(path_spec.GetCString(), flags, mode);
 522         const int save_errno = fd == -1 ? errno : 0;
 523         StreamString response;
 524         response.PutChar('F');
 525         response.Printf("%i", fd);
 526         if (save_errno)
 527           response.Printf(",%i", save_errno);
 528         return SendPacketNoLock(response.GetString());
 529       }
 530     }
 531   }
 532   return SendErrorResponse(18);
 533 }
 534
 535 GDBRemoteCommunication::PacketResult
 536 GDBRemoteCommunicationServerCommon::Handle_vFile_Close(
 537     StringExtractorGDBRemote &packet) {
 538   packet.SetFilePos(::strlen("vFile:close:"));
 539   int fd = packet.GetS32(-1);
 540   Status error;
 541   int err = -1;
 542   int save_errno = 0;
 543   if (fd >= 0) {
 544     err = close(fd);
 545     save_errno = err == -1 ? errno : 0;
 546   } else {
 547     save_errno = EINVAL;
 548   }
 549   StreamString response;
 550   response.PutChar('F');
 551   response.Printf("%i", err);
 552   if (save_errno)
 553     response.Printf(",%i", save_errno);
 554   return SendPacketNoLock(response.GetString());
 555 }
 556
 557 GDBRemoteCommunication::PacketResult
 558 GDBRemoteCommunicationServerCommon::Handle_vFile_pRead(
 559     StringExtractorGDBRemote &packet) {
 560 #ifdef _WIN32
 561   // Not implemented on Windows
 562   return SendUnimplementedResponse(
 563       "GDBRemoteCommunicationServerCommon::Handle_vFile_pRead() unimplemented");
 564 #else
 565   StreamGDBRemote response;
 566   packet.SetFilePos(::strlen("vFile:pread:"));
 567   int fd = packet.GetS32(-1);
 568   if (packet.GetChar() == ',') {
 569     uint64_t count = packet.GetU64(UINT64_MAX);
 570     if (packet.GetChar() == ',') {
 571       uint64_t offset = packet.GetU64(UINT32_MAX);
 572       if (count == UINT64_MAX) {
 573         response.Printf("F-1:%i", EINVAL);
 574         return SendPacketNoLock(response.GetString());
 575       }
 576
 577       std::string buffer(count, 0);
 578       const ssize_t bytes_read = ::pread(fd, &buffer[0], buffer.size(), offset);
 579       const int save_errno = bytes_read == -1 ? errno : 0;
 580       response.PutChar('F');
 581       response.Printf("%zi", bytes_read);
 582       if (save_errno)
 583         response.Printf(",%i", save_errno);
 584       else {
 585         response.PutChar(';');
 586         response.PutEscapedBytes(&buffer[0], bytes_read);
 587       }
 588       return SendPacketNoLock(response.GetString());
 589     }
 590   }
 591   return SendErrorResponse(21);
 592
 593 #endif
 594 }
 595
 596 GDBRemoteCommunication::PacketResult
 597 GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite(
 598     StringExtractorGDBRemote &packet) {
 599 #ifdef _WIN32
 600   return SendUnimplementedResponse("GDBRemoteCommunicationServerCommon::Handle_"
 601                                    "vFile_pWrite() unimplemented");
 602 #else
 603   packet.SetFilePos(::strlen("vFile:pwrite:"));
 604
 605   StreamGDBRemote response;
 606   response.PutChar('F');
 607
 608   int fd = packet.GetU32(UINT32_MAX);
 609   if (packet.GetChar() == ',') {
 610     off_t offset = packet.GetU64(UINT32_MAX);
 611     if (packet.GetChar() == ',') {
 612       std::string buffer;
 613       if (packet.GetEscapedBinaryData(buffer)) {
 614         const ssize_t bytes_written =
 615             ::pwrite(fd, buffer.data(), buffer.size(), offset);
 616         const int save_errno = bytes_written == -1 ? errno : 0;
 617         response.Printf("%zi", bytes_written);
 618         if (save_errno)
 619           response.Printf(",%i", save_errno);
 620       } else {
 621         response.Printf("-1,%i", EINVAL);
 622       }
 623       return SendPacketNoLock(response.GetString());
 624     }
 625   }
 626   return SendErrorResponse(27);
 627 #endif
 628 }
 629
 630 GDBRemoteCommunication::PacketResult
 631 GDBRemoteCommunicationServerCommon::Handle_vFile_Size(
 632     StringExtractorGDBRemote &packet) {
 633   packet.SetFilePos(::strlen("vFile:size:"));
 634   std::string path;
 635   packet.GetHexByteString(path);
 636   if (!path.empty()) {
 637     uint64_t Size;
 638     if (llvm::sys::fs::file_size(path, Size))
 639       return SendErrorResponse(5);
 640     StreamString response;
 641     response.PutChar('F');
 642     response.PutHex64(Size);
 643     if (Size == UINT64_MAX) {
 644       response.PutChar(',');
 645       response.PutHex64(Size); // TODO: replace with Host::GetSyswideErrorCode()
 646     }
 647     return SendPacketNoLock(response.GetString());
 648   }
 649   return SendErrorResponse(22);
 650 }
 651
 652 GDBRemoteCommunication::PacketResult
 653 GDBRemoteCommunicationServerCommon::Handle_vFile_Mode(
 654     StringExtractorGDBRemote &packet) {
 655   packet.SetFilePos(::strlen("vFile:mode:"));
 656   std::string path;
 657   packet.GetHexByteString(path);
 658   if (!path.empty()) {
 659     FileSpec file_spec(path);
 660     FileSystem::Instance().Resolve(file_spec);
 661     std::error_code ec;
 662     const uint32_t mode = FileSystem::Instance().GetPermissions(file_spec, ec);
 663     StreamString response;
 664     response.Printf("F%u", mode);
 665     if (mode == 0 || ec)
 666       response.Printf(",%i", (int)Status(ec).GetError());
 667     return SendPacketNoLock(response.GetString());
 668   }
 669   return SendErrorResponse(23);
 670 }
 671
 672 GDBRemoteCommunication::PacketResult
 673 GDBRemoteCommunicationServerCommon::Handle_vFile_Exists(
 674     StringExtractorGDBRemote &packet) {
 675   packet.SetFilePos(::strlen("vFile:exists:"));
 676   std::string path;
 677   packet.GetHexByteString(path);
 678   if (!path.empty()) {
 679     bool retcode = llvm::sys::fs::exists(path);
 680     StreamString response;
 681     response.PutChar('F');
 682     response.PutChar(',');
 683     if (retcode)
 684       response.PutChar('1');
 685     else
 686       response.PutChar('0');
 687     return SendPacketNoLock(response.GetString());
 688   }
 689   return SendErrorResponse(24);
 690 }
 691
 692 GDBRemoteCommunication::PacketResult
 693 GDBRemoteCommunicationServerCommon::Handle_vFile_symlink(
 694     StringExtractorGDBRemote &packet) {
 695   packet.SetFilePos(::strlen("vFile:symlink:"));
 696   std::string dst, src;
 697   packet.GetHexByteStringTerminatedBy(dst, ',');
 698   packet.GetChar(); // Skip ',' char
 699   packet.GetHexByteString(src);
 700
 701   FileSpec src_spec(src);
 702   FileSystem::Instance().Resolve(src_spec);
 703   Status error = FileSystem::Instance().Symlink(src_spec, FileSpec(dst));
 704
 705   StreamString response;
 706   response.Printf("F%u,%u", error.GetError(), error.GetError());
 707   return SendPacketNoLock(response.GetString());
 708 }
 709
 710 GDBRemoteCommunication::PacketResult
 711 GDBRemoteCommunicationServerCommon::Handle_vFile_unlink(
 712     StringExtractorGDBRemote &packet) {
 713   packet.SetFilePos(::strlen("vFile:unlink:"));
 714   std::string path;
 715   packet.GetHexByteString(path);
 716   Status error(llvm::sys::fs::remove(path));
 717   StreamString response;
 718   response.Printf("F%u,%u", error.GetError(), error.GetError());
 719   return SendPacketNoLock(response.GetString());
 720 }
 721
 722 GDBRemoteCommunication::PacketResult
 723 GDBRemoteCommunicationServerCommon::Handle_qPlatform_shell(
 724     StringExtractorGDBRemote &packet) {
 725   packet.SetFilePos(::strlen("qPlatform_shell:"));
 726   std::string path;
 727   std::string working_dir;
 728   packet.GetHexByteStringTerminatedBy(path, ',');
 729   if (!path.empty()) {
 730     if (packet.GetChar() == ',') {
 731       // FIXME: add timeout to qPlatform_shell packet
 732       // uint32_t timeout = packet.GetHexMaxU32(false, 32);
 733       if (packet.GetChar() == ',')
 734         packet.GetHexByteString(working_dir);
 735       int status, signo;
 736       std::string output;
 737       FileSpec working_spec(working_dir);
 738       FileSystem::Instance().Resolve(working_spec);
 739       Status err =
 740           Host::RunShellCommand(path.c_str(), working_spec, &status, &signo,
 741                                 &output, std::chrono::seconds(10));
 742       StreamGDBRemote response;
 743       if (err.Fail()) {
 744         response.PutCString("F,");
 745         response.PutHex32(UINT32_MAX);
 746       } else {
 747         response.PutCString("F,");
 748         response.PutHex32(status);
 749         response.PutChar(',');
 750         response.PutHex32(signo);
 751         response.PutChar(',');
 752         response.PutEscapedBytes(output.c_str(), output.size());
 753       }
 754       return SendPacketNoLock(response.GetString());
 755     }
 756   }
 757   return SendErrorResponse(24);
 758 }
 759
 760 GDBRemoteCommunication::PacketResult
 761 GDBRemoteCommunicationServerCommon::Handle_vFile_Stat(
 762     StringExtractorGDBRemote &packet) {
 763   return SendUnimplementedResponse(
 764       "GDBRemoteCommunicationServerCommon::Handle_vFile_Stat() unimplemented");
 765 }
 766
 767 GDBRemoteCommunication::PacketResult
 768 GDBRemoteCommunicationServerCommon::Handle_vFile_MD5(
 769     StringExtractorGDBRemote &packet) {
 770   packet.SetFilePos(::strlen("vFile:MD5:"));
 771   std::string path;
 772   packet.GetHexByteString(path);
 773   if (!path.empty()) {
 774     StreamGDBRemote response;
 775     auto Result = llvm::sys::fs::md5_contents(path);
 776     if (!Result) {
 777       response.PutCString("F,");
 778       response.PutCString("x");
 779     } else {
 780       response.PutCString("F,");
 781       response.PutHex64(Result->low());
 782       response.PutHex64(Result->high());
 783     }
 784     return SendPacketNoLock(response.GetString());
 785   }
 786   return SendErrorResponse(25);
 787 }
 788
 789 GDBRemoteCommunication::PacketResult
 790 GDBRemoteCommunicationServerCommon::Handle_qPlatform_mkdir(
 791     StringExtractorGDBRemote &packet) {
 792   packet.SetFilePos(::strlen("qPlatform_mkdir:"));
 793   mode_t mode = packet.GetHexMaxU32(false, UINT32_MAX);
 794   if (packet.GetChar() == ',') {
 795     std::string path;
 796     packet.GetHexByteString(path);
 797     Status error(llvm::sys::fs::create_directory(path, mode));
 798
 799     StreamGDBRemote response;
 800     response.Printf("F%u", error.GetError());
 801
 802     return SendPacketNoLock(response.GetString());
 803   }
 804   return SendErrorResponse(20);
 805 }
 806
 807 GDBRemoteCommunication::PacketResult
 808 GDBRemoteCommunicationServerCommon::Handle_qPlatform_chmod(
 809     StringExtractorGDBRemote &packet) {
 810   packet.SetFilePos(::strlen("qPlatform_chmod:"));
 811
 812   auto perms =
 813       static_cast<llvm::sys::fs::perms>(packet.GetHexMaxU32(false, UINT32_MAX));
 814   if (packet.GetChar() == ',') {
 815     std::string path;
 816     packet.GetHexByteString(path);
 817     Status error(llvm::sys::fs::setPermissions(path, perms));
 818
 819     StreamGDBRemote response;
 820     response.Printf("F%u", error.GetError());
 821
 822     return SendPacketNoLock(response.GetString());
 823   }
 824   return SendErrorResponse(19);
 825 }
 826
 827 GDBRemoteCommunication::PacketResult
 828 GDBRemoteCommunicationServerCommon::Handle_qSupported(
 829     StringExtractorGDBRemote &packet) {
 830   StreamGDBRemote response;
 831
 832   // Features common to lldb-platform and llgs.
 833   uint32_t max_packet_size = 128 * 1024; // 128KBytes is a reasonable max packet
 834                                          // size--debugger can always use less
 835   response.Printf("PacketSize=%x", max_packet_size);
 836
 837   response.PutCString(";QStartNoAckMode+");
 838   response.PutCString(";QThreadSuffixSupported+");
 839   response.PutCString(";QListThreadsInStopReply+");
 840   response.PutCString(";qEcho+");
 841 #if defined(__linux__) || defined(__NetBSD__)
 842   response.PutCString(";QPassSignals+");
 843   response.PutCString(";qXfer:auxv:read+");
 844 #endif
 845
 846   return SendPacketNoLock(response.GetString());
 847 }
 848
 849 GDBRemoteCommunication::PacketResult
 850 GDBRemoteCommunicationServerCommon::Handle_QThreadSuffixSupported(
 851     StringExtractorGDBRemote &packet) {
 852   m_thread_suffix_supported = true;
 853   return SendOKResponse();
 854 }
 855
 856 GDBRemoteCommunication::PacketResult
 857 GDBRemoteCommunicationServerCommon::Handle_QListThreadsInStopReply(
 858     StringExtractorGDBRemote &packet) {
 859   m_list_threads_in_stop_reply = true;
 860   return SendOKResponse();
 861 }
 862
 863 GDBRemoteCommunication::PacketResult
 864 GDBRemoteCommunicationServerCommon::Handle_QSetDetachOnError(
 865     StringExtractorGDBRemote &packet) {
 866   packet.SetFilePos(::strlen("QSetDetachOnError:"));
 867   if (packet.GetU32(0))
 868     m_process_launch_info.GetFlags().Set(eLaunchFlagDetachOnError);
 869   else
 870     m_process_launch_info.GetFlags().Clear(eLaunchFlagDetachOnError);
 871   return SendOKResponse();
 872 }
 873
 874 GDBRemoteCommunication::PacketResult
 875 GDBRemoteCommunicationServerCommon::Handle_QStartNoAckMode(
 876     StringExtractorGDBRemote &packet) {
 877   // Send response first before changing m_send_acks to we ack this packet
 878   PacketResult packet_result = SendOKResponse();
 879   m_send_acks = false;
 880   return packet_result;
 881 }
 882
 883 GDBRemoteCommunication::PacketResult
 884 GDBRemoteCommunicationServerCommon::Handle_QSetSTDIN(
 885     StringExtractorGDBRemote &packet) {
 886   packet.SetFilePos(::strlen("QSetSTDIN:"));
 887   FileAction file_action;
 888   std::string path;
 889   packet.GetHexByteString(path);
 890   const bool read = true;
 891   const bool write = false;
 892   if (file_action.Open(STDIN_FILENO, FileSpec(path), read, write)) {
 893     m_process_launch_info.AppendFileAction(file_action);
 894     return SendOKResponse();
 895   }
 896   return SendErrorResponse(15);
 897 }
 898
 899 GDBRemoteCommunication::PacketResult
 900 GDBRemoteCommunicationServerCommon::Handle_QSetSTDOUT(
 901     StringExtractorGDBRemote &packet) {
 902   packet.SetFilePos(::strlen("QSetSTDOUT:"));
 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(STDOUT_FILENO, FileSpec(path), read, write)) {
 909     m_process_launch_info.AppendFileAction(file_action);
 910     return SendOKResponse();
 911   }
 912   return SendErrorResponse(16);
 913 }
 914
 915 GDBRemoteCommunication::PacketResult
 916 GDBRemoteCommunicationServerCommon::Handle_QSetSTDERR(
 917     StringExtractorGDBRemote &packet) {
 918   packet.SetFilePos(::strlen("QSetSTDERR:"));
 919   FileAction file_action;
 920   std::string path;
 921   packet.GetHexByteString(path);
 922   const bool read = false;
 923   const bool write = true;
 924   if (file_action.Open(STDERR_FILENO, FileSpec(path), read, write)) {
 925     m_process_launch_info.AppendFileAction(file_action);
 926     return SendOKResponse();
 927   }
 928   return SendErrorResponse(17);
 929 }
 930
 931 GDBRemoteCommunication::PacketResult
 932 GDBRemoteCommunicationServerCommon::Handle_qLaunchSuccess(
 933     StringExtractorGDBRemote &packet) {
 934   if (m_process_launch_error.Success())
 935     return SendOKResponse();
 936   StreamString response;
 937   response.PutChar('E');
 938   response.PutCString(m_process_launch_error.AsCString("<unknown error>"));
 939   return SendPacketNoLock(response.GetString());
 940 }
 941
 942 GDBRemoteCommunication::PacketResult
 943 GDBRemoteCommunicationServerCommon::Handle_QEnvironment(
 944     StringExtractorGDBRemote &packet) {
 945   packet.SetFilePos(::strlen("QEnvironment:"));
 946   const uint32_t bytes_left = packet.GetBytesLeft();
 947   if (bytes_left > 0) {
 948     m_process_launch_info.GetEnvironment().insert(packet.Peek());
 949     return SendOKResponse();
 950   }
 951   return SendErrorResponse(12);
 952 }
 953
 954 GDBRemoteCommunication::PacketResult
 955 GDBRemoteCommunicationServerCommon::Handle_QEnvironmentHexEncoded(
 956     StringExtractorGDBRemote &packet) {
 957   packet.SetFilePos(::strlen("QEnvironmentHexEncoded:"));
 958   const uint32_t bytes_left = packet.GetBytesLeft();
 959   if (bytes_left > 0) {
 960     std::string str;
 961     packet.GetHexByteString(str);
 962     m_process_launch_info.GetEnvironment().insert(str);
 963     return SendOKResponse();
 964   }
 965   return SendErrorResponse(12);
 966 }
 967
 968 GDBRemoteCommunication::PacketResult
 969 GDBRemoteCommunicationServerCommon::Handle_QLaunchArch(
 970     StringExtractorGDBRemote &packet) {
 971   packet.SetFilePos(::strlen("QLaunchArch:"));
 972   const uint32_t bytes_left = packet.GetBytesLeft();
 973   if (bytes_left > 0) {
 974     const char *arch_triple = packet.Peek();
 975     m_process_launch_info.SetArchitecture(HostInfo::GetAugmentedArchSpec(arch_triple));
 976     return SendOKResponse();
 977   }
 978   return SendErrorResponse(13);
 979 }
 980
 981 GDBRemoteCommunication::PacketResult
 982 GDBRemoteCommunicationServerCommon::Handle_A(StringExtractorGDBRemote &packet) {
 983   // The 'A' packet is the most over designed packet ever here with redundant
 984   // argument indexes, redundant argument lengths and needed hex encoded
 985   // argument string values. Really all that is needed is a comma separated hex
 986   // encoded argument value list, but we will stay true to the documented
 987   // version of the 'A' packet here...
 988
 989   Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
 990   int actual_arg_index = 0;
 991
 992   packet.SetFilePos(1); // Skip the 'A'
 993   bool success = true;
 994   while (success && packet.GetBytesLeft() > 0) {
 995     // Decode the decimal argument string length. This length is the number of
 996     // hex nibbles in the argument string value.
 997     const uint32_t arg_len = packet.GetU32(UINT32_MAX);
 998     if (arg_len == UINT32_MAX)
 999       success = false;
1000     else {
1001       // Make sure the argument hex string length is followed by a comma
1002       if (packet.GetChar() != ',')
1003         success = false;
1004       else {
1005         // Decode the argument index. We ignore this really because who would
1006         // really send down the arguments in a random order???
1007         const uint32_t arg_idx = packet.GetU32(UINT32_MAX);
1008         if (arg_idx == UINT32_MAX)
1009           success = false;
1010         else {
1011           // Make sure the argument index is followed by a comma
1012           if (packet.GetChar() != ',')
1013             success = false;
1014           else {
1015             // Decode the argument string value from hex bytes back into a UTF8
1016             // string and make sure the length matches the one supplied in the
1017             // packet
1018             std::string arg;
1019             if (packet.GetHexByteStringFixedLength(arg, arg_len) !=
1020                 (arg_len / 2))
1021               success = false;
1022             else {
1023               // If there are any bytes left
1024               if (packet.GetBytesLeft()) {
1025                 if (packet.GetChar() != ',')
1026                   success = false;
1027               }
1028
1029               if (success) {
1030                 if (arg_idx == 0)
1031                   m_process_launch_info.GetExecutableFile().SetFile(
1032                       arg, FileSpec::Style::native);
1033                 m_process_launch_info.GetArguments().AppendArgument(arg);
1034                 if (log)
1035                   log->Printf("LLGSPacketHandler::%s added arg %d: \"%s\"",
1036                               __FUNCTION__, actual_arg_index, arg.c_str());
1037                 ++actual_arg_index;
1038               }
1039             }
1040           }
1041         }
1042       }
1043     }
1044   }
1045
1046   if (success) {
1047     m_process_launch_error = LaunchProcess();
1048     if (m_process_launch_error.Success())
1049       return SendOKResponse();
1050     LLDB_LOG(log, "failed to launch exe: {0}", m_process_launch_error);
1051   }
1052   return SendErrorResponse(8);
1053 }
1054
1055 GDBRemoteCommunication::PacketResult
1056 GDBRemoteCommunicationServerCommon::Handle_qEcho(
1057     StringExtractorGDBRemote &packet) {
1058   // Just echo back the exact same packet for qEcho...
1059   return SendPacketNoLock(packet.GetStringRef());
1060 }
1061
1062 GDBRemoteCommunication::PacketResult
1063 GDBRemoteCommunicationServerCommon::Handle_qModuleInfo(
1064     StringExtractorGDBRemote &packet) {
1065   packet.SetFilePos(::strlen("qModuleInfo:"));
1066
1067   std::string module_path;
1068   packet.GetHexByteStringTerminatedBy(module_path, ';');
1069   if (module_path.empty())
1070     return SendErrorResponse(1);
1071
1072   if (packet.GetChar() != ';')
1073     return SendErrorResponse(2);
1074
1075   std::string triple;
1076   packet.GetHexByteString(triple);
1077
1078   ModuleSpec matched_module_spec = GetModuleInfo(module_path, triple);
1079   if (!matched_module_spec.GetFileSpec())
1080     return SendErrorResponse(3);
1081
1082   const auto file_offset = matched_module_spec.GetObjectOffset();
1083   const auto file_size = matched_module_spec.GetObjectSize();
1084   const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
1085
1086   StreamGDBRemote response;
1087
1088   if (uuid_str.empty()) {
1089     auto Result = llvm::sys::fs::md5_contents(matched_module_spec.GetFileSpec().GetPath());
1090     if (!Result)
1091       return SendErrorResponse(5);
1092     response.PutCString("md5:");
1093     response.PutCStringAsRawHex8(Result->digest().c_str());
1094   } else {
1095     response.PutCString("uuid:");
1096     response.PutCStringAsRawHex8(uuid_str.c_str());
1097   }
1098   response.PutChar(';');
1099
1100   const auto &module_arch = matched_module_spec.GetArchitecture();
1101   response.PutCString("triple:");
1102   response.PutCStringAsRawHex8(module_arch.GetTriple().getTriple().c_str());
1103   response.PutChar(';');
1104
1105   response.PutCString("file_path:");
1106   response.PutCStringAsRawHex8(matched_module_spec.GetFileSpec().GetCString());
1107   response.PutChar(';');
1108   response.PutCString("file_offset:");
1109   response.PutHex64(file_offset);
1110   response.PutChar(';');
1111   response.PutCString("file_size:");
1112   response.PutHex64(file_size);
1113   response.PutChar(';');
1114
1115   return SendPacketNoLock(response.GetString());
1116 }
1117
1118 GDBRemoteCommunication::PacketResult
1119 GDBRemoteCommunicationServerCommon::Handle_jModulesInfo(
1120     StringExtractorGDBRemote &packet) {
1121   packet.SetFilePos(::strlen("jModulesInfo:"));
1122
1123   StructuredData::ObjectSP object_sp = StructuredData::ParseJSON(packet.Peek());
1124   if (!object_sp)
1125     return SendErrorResponse(1);
1126
1127   StructuredData::Array *packet_array = object_sp->GetAsArray();
1128   if (!packet_array)
1129     return SendErrorResponse(2);
1130
1131   JSONArray::SP response_array_sp = std::make_shared<JSONArray>();
1132   for (size_t i = 0; i < packet_array->GetSize(); ++i) {
1133     StructuredData::Dictionary *query =
1134         packet_array->GetItemAtIndex(i)->GetAsDictionary();
1135     if (!query)
1136       continue;
1137     llvm::StringRef file, triple;
1138     if (!query->GetValueForKeyAsString("file", file) ||
1139         !query->GetValueForKeyAsString("triple", triple))
1140       continue;
1141
1142     ModuleSpec matched_module_spec = GetModuleInfo(file, triple);
1143     if (!matched_module_spec.GetFileSpec())
1144       continue;
1145
1146     const auto file_offset = matched_module_spec.GetObjectOffset();
1147     const auto file_size = matched_module_spec.GetObjectSize();
1148     const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
1149
1150     if (uuid_str.empty())
1151       continue;
1152
1153     JSONObject::SP response = std::make_shared<JSONObject>();
1154     response_array_sp->AppendObject(response);
1155     response->SetObject("uuid", std::make_shared<JSONString>(uuid_str));
1156     response->SetObject(
1157         "triple",
1158         std::make_shared<JSONString>(
1159             matched_module_spec.GetArchitecture().GetTriple().getTriple()));
1160     response->SetObject("file_path",
1161                         std::make_shared<JSONString>(
1162                             matched_module_spec.GetFileSpec().GetPath()));
1163     response->SetObject("file_offset",
1164                         std::make_shared<JSONNumber>(file_offset));
1165     response->SetObject("file_size", std::make_shared<JSONNumber>(file_size));
1166   }
1167
1168   StreamString response;
1169   response_array_sp->Write(response);
1170   StreamGDBRemote escaped_response;
1171   escaped_response.PutEscapedBytes(response.GetString().data(),
1172                                    response.GetSize());
1173   return SendPacketNoLock(escaped_response.GetString());
1174 }
1175
1176 void GDBRemoteCommunicationServerCommon::CreateProcessInfoResponse(
1177     const ProcessInstanceInfo &proc_info, StreamString &response) {
1178   response.Printf(
1179       "pid:%" PRIu64 ";ppid:%" PRIu64 ";uid:%i;gid:%i;euid:%i;egid:%i;",
1180       proc_info.GetProcessID(), proc_info.GetParentProcessID(),
1181       proc_info.GetUserID(), proc_info.GetGroupID(),
1182       proc_info.GetEffectiveUserID(), proc_info.GetEffectiveGroupID());
1183   response.PutCString("name:");
1184   response.PutCStringAsRawHex8(proc_info.GetExecutableFile().GetCString());
1185   response.PutChar(';');
1186   const ArchSpec &proc_arch = proc_info.GetArchitecture();
1187   if (proc_arch.IsValid()) {
1188     const llvm::Triple &proc_triple = proc_arch.GetTriple();
1189     response.PutCString("triple:");
1190     response.PutCStringAsRawHex8(proc_triple.getTriple().c_str());
1191     response.PutChar(';');
1192   }
1193 }
1194
1195 void GDBRemoteCommunicationServerCommon::
1196     CreateProcessInfoResponse_DebugServerStyle(
1197         const ProcessInstanceInfo &proc_info, StreamString &response) {
1198   response.Printf("pid:%" PRIx64 ";parent-pid:%" PRIx64
1199                   ";real-uid:%x;real-gid:%x;effective-uid:%x;effective-gid:%x;",
1200                   proc_info.GetProcessID(), proc_info.GetParentProcessID(),
1201                   proc_info.GetUserID(), proc_info.GetGroupID(),
1202                   proc_info.GetEffectiveUserID(),
1203                   proc_info.GetEffectiveGroupID());
1204
1205   const ArchSpec &proc_arch = proc_info.GetArchitecture();
1206   if (proc_arch.IsValid()) {
1207     const llvm::Triple &proc_triple = proc_arch.GetTriple();
1208 #if defined(__APPLE__)
1209     // We'll send cputype/cpusubtype.
1210     const uint32_t cpu_type = proc_arch.GetMachOCPUType();
1211     if (cpu_type != 0)
1212       response.Printf("cputype:%" PRIx32 ";", cpu_type);
1213
1214     const uint32_t cpu_subtype = proc_arch.GetMachOCPUSubType();
1215     if (cpu_subtype != 0)
1216       response.Printf("cpusubtype:%" PRIx32 ";", cpu_subtype);
1217
1218     const std::string vendor = proc_triple.getVendorName();
1219     if (!vendor.empty())
1220       response.Printf("vendor:%s;", vendor.c_str());
1221 #else
1222     // We'll send the triple.
1223     response.PutCString("triple:");
1224     response.PutCStringAsRawHex8(proc_triple.getTriple().c_str());
1225     response.PutChar(';');
1226 #endif
1227     std::string ostype = proc_triple.getOSName();
1228     // Adjust so ostype reports ios for Apple/ARM and Apple/ARM64.
1229     if (proc_triple.getVendor() == llvm::Triple::Apple) {
1230       switch (proc_triple.getArch()) {
1231       case llvm::Triple::arm:
1232       case llvm::Triple::thumb:
1233       case llvm::Triple::aarch64:
1234         ostype = "ios";
1235         break;
1236       default:
1237         // No change.
1238         break;
1239       }
1240     }
1241     response.Printf("ostype:%s;", ostype.c_str());
1242
1243     switch (proc_arch.GetByteOrder()) {
1244     case lldb::eByteOrderLittle:
1245       response.PutCString("endian:little;");
1246       break;
1247     case lldb::eByteOrderBig:
1248       response.PutCString("endian:big;");
1249       break;
1250     case lldb::eByteOrderPDP:
1251       response.PutCString("endian:pdp;");
1252       break;
1253     default:
1254       // Nothing.
1255       break;
1256     }
1257     // In case of MIPS64, pointer size is depend on ELF ABI For N32 the pointer
1258     // size is 4 and for N64 it is 8
1259     std::string abi = proc_arch.GetTargetABI();
1260     if (!abi.empty())
1261       response.Printf("elf_abi:%s;", abi.c_str());
1262     response.Printf("ptrsize:%d;", proc_arch.GetAddressByteSize());
1263   }
1264 }
1265
1266 FileSpec GDBRemoteCommunicationServerCommon::FindModuleFile(
1267     const std::string &module_path, const ArchSpec &arch) {
1268 #ifdef __ANDROID__
1269   return HostInfoAndroid::ResolveLibraryPath(module_path, arch);
1270 #else
1271   FileSpec file_spec(module_path);
1272   FileSystem::Instance().Resolve(file_spec);
1273   return file_spec;
1274 #endif
1275 }
1276
1277 ModuleSpec
1278 GDBRemoteCommunicationServerCommon::GetModuleInfo(llvm::StringRef module_path,
1279                                                   llvm::StringRef triple) {
1280   ArchSpec arch(triple);
1281
1282   FileSpec req_module_path_spec(module_path);
1283   FileSystem::Instance().Resolve(req_module_path_spec);
1284
1285   const FileSpec module_path_spec =
1286       FindModuleFile(req_module_path_spec.GetPath(), arch);
1287   const ModuleSpec module_spec(module_path_spec, arch);
1288
1289   ModuleSpecList module_specs;
1290   if (!ObjectFile::GetModuleSpecifications(module_path_spec, 0, 0,
1291                                            module_specs))
1292     return ModuleSpec();
1293
1294   ModuleSpec matched_module_spec;
1295   if (!module_specs.FindMatchingModuleSpec(module_spec, matched_module_spec))
1296     return ModuleSpec();
1297
1298   return matched_module_spec;
1299 }