//===-- GDBRemoteCommunicationServerCommon.cpp ------------------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// #include "GDBRemoteCommunicationServerCommon.h" #include // C Includes // C++ Includes #include #include // Other libraries and framework includes #include "llvm/ADT/Triple.h" #include "lldb/Core/Log.h" #include "lldb/Core/ModuleSpec.h" #include "lldb/Core/StreamGDBRemote.h" #include "lldb/Core/StreamString.h" #include "lldb/Host/Config.h" #include "lldb/Host/Endian.h" #include "lldb/Host/File.h" #include "lldb/Host/FileSystem.h" #include "lldb/Host/Host.h" #include "lldb/Host/HostInfo.h" #include "lldb/Host/StringConvert.h" #include "lldb/Interpreter/Args.h" #include "lldb/Symbol/ObjectFile.h" #include "lldb/Target/FileAction.h" #include "lldb/Target/Platform.h" #include "lldb/Target/Process.h" // Project includes #include "ProcessGDBRemoteLog.h" #include "Utility/StringExtractorGDBRemote.h" #ifdef __ANDROID__ #include "lldb/Host/android/HostInfoAndroid.h" #endif using namespace lldb; using namespace lldb_private; using namespace lldb_private::process_gdb_remote; #ifdef __ANDROID__ const static uint32_t g_default_packet_timeout_sec = 20; // seconds #else const static uint32_t g_default_packet_timeout_sec = 0; // not specified #endif //---------------------------------------------------------------------- // GDBRemoteCommunicationServerCommon constructor //---------------------------------------------------------------------- GDBRemoteCommunicationServerCommon::GDBRemoteCommunicationServerCommon(const char *comm_name, const char *listener_name) : GDBRemoteCommunicationServer (comm_name, listener_name), m_process_launch_info (), m_process_launch_error (), m_proc_infos (), m_proc_infos_index (0), m_thread_suffix_supported (false), m_list_threads_in_stop_reply (false) { RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_A, &GDBRemoteCommunicationServerCommon::Handle_A); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_QEnvironment, &GDBRemoteCommunicationServerCommon::Handle_QEnvironment); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_QEnvironmentHexEncoded, &GDBRemoteCommunicationServerCommon::Handle_QEnvironmentHexEncoded); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qfProcessInfo, &GDBRemoteCommunicationServerCommon::Handle_qfProcessInfo); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qGroupName, &GDBRemoteCommunicationServerCommon::Handle_qGroupName); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qHostInfo, &GDBRemoteCommunicationServerCommon::Handle_qHostInfo); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_QLaunchArch, &GDBRemoteCommunicationServerCommon::Handle_QLaunchArch); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qLaunchSuccess, &GDBRemoteCommunicationServerCommon::Handle_qLaunchSuccess); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_QListThreadsInStopReply, &GDBRemoteCommunicationServerCommon::Handle_QListThreadsInStopReply); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qEcho, &GDBRemoteCommunicationServerCommon::Handle_qEcho); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qModuleInfo, &GDBRemoteCommunicationServerCommon::Handle_qModuleInfo); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qPlatform_chmod, &GDBRemoteCommunicationServerCommon::Handle_qPlatform_chmod); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qPlatform_mkdir, &GDBRemoteCommunicationServerCommon::Handle_qPlatform_mkdir); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qPlatform_shell, &GDBRemoteCommunicationServerCommon::Handle_qPlatform_shell); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qProcessInfoPID, &GDBRemoteCommunicationServerCommon::Handle_qProcessInfoPID); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_QSetDetachOnError, &GDBRemoteCommunicationServerCommon::Handle_QSetDetachOnError); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_QSetSTDERR, &GDBRemoteCommunicationServerCommon::Handle_QSetSTDERR); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_QSetSTDIN, &GDBRemoteCommunicationServerCommon::Handle_QSetSTDIN); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_QSetSTDOUT, &GDBRemoteCommunicationServerCommon::Handle_QSetSTDOUT); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qSpeedTest, &GDBRemoteCommunicationServerCommon::Handle_qSpeedTest); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qsProcessInfo, &GDBRemoteCommunicationServerCommon::Handle_qsProcessInfo); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_QStartNoAckMode, &GDBRemoteCommunicationServerCommon::Handle_QStartNoAckMode); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qSupported, &GDBRemoteCommunicationServerCommon::Handle_qSupported); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_QThreadSuffixSupported, &GDBRemoteCommunicationServerCommon::Handle_QThreadSuffixSupported); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qUserName, &GDBRemoteCommunicationServerCommon::Handle_qUserName); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_vFile_close, &GDBRemoteCommunicationServerCommon::Handle_vFile_Close); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_vFile_exists, &GDBRemoteCommunicationServerCommon::Handle_vFile_Exists); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_vFile_md5, &GDBRemoteCommunicationServerCommon::Handle_vFile_MD5); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_vFile_mode, &GDBRemoteCommunicationServerCommon::Handle_vFile_Mode); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_vFile_open, &GDBRemoteCommunicationServerCommon::Handle_vFile_Open); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_vFile_pread, &GDBRemoteCommunicationServerCommon::Handle_vFile_pRead); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_vFile_pwrite, &GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_vFile_size, &GDBRemoteCommunicationServerCommon::Handle_vFile_Size); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_vFile_stat, &GDBRemoteCommunicationServerCommon::Handle_vFile_Stat); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_vFile_symlink, &GDBRemoteCommunicationServerCommon::Handle_vFile_symlink); RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_vFile_unlink, &GDBRemoteCommunicationServerCommon::Handle_vFile_unlink); } //---------------------------------------------------------------------- // Destructor //---------------------------------------------------------------------- GDBRemoteCommunicationServerCommon::~GDBRemoteCommunicationServerCommon() { } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_qHostInfo (StringExtractorGDBRemote &packet) { StreamString response; // $cputype:16777223;cpusubtype:3;ostype:Darwin;vendor:apple;endian:little;ptrsize:8;#00 ArchSpec host_arch(HostInfo::GetArchitecture()); const llvm::Triple &host_triple = host_arch.GetTriple(); response.PutCString("triple:"); response.PutCStringAsRawHex8(host_triple.getTriple().c_str()); response.Printf (";ptrsize:%u;",host_arch.GetAddressByteSize()); const char* distribution_id = host_arch.GetDistributionId ().AsCString (); if (distribution_id) { response.PutCString("distribution_id:"); response.PutCStringAsRawHex8(distribution_id); response.PutCString(";"); } // Only send out MachO info when lldb-platform/llgs is running on a MachO host. #if defined(__APPLE__) uint32_t cpu = host_arch.GetMachOCPUType(); uint32_t sub = host_arch.GetMachOCPUSubType(); if (cpu != LLDB_INVALID_CPUTYPE) response.Printf ("cputype:%u;", cpu); if (sub != LLDB_INVALID_CPUTYPE) response.Printf ("cpusubtype:%u;", sub); if (cpu == ArchSpec::kCore_arm_any) response.Printf("watchpoint_exceptions_received:before;"); // On armv7 we use "synchronous" watchpoints which means the exception is delivered before the instruction executes. else response.Printf("watchpoint_exceptions_received:after;"); #else if (host_arch.GetMachine() == llvm::Triple::aarch64 || host_arch.GetMachine() == llvm::Triple::aarch64_be || host_arch.GetMachine() == llvm::Triple::arm || host_arch.GetMachine() == llvm::Triple::armeb || host_arch.GetMachine() == llvm::Triple::mips64 || host_arch.GetMachine() == llvm::Triple::mips64el || host_arch.GetMachine() == llvm::Triple::mips || host_arch.GetMachine() == llvm::Triple::mipsel) response.Printf("watchpoint_exceptions_received:before;"); else response.Printf("watchpoint_exceptions_received:after;"); #endif switch (endian::InlHostByteOrder()) { case eByteOrderBig: response.PutCString ("endian:big;"); break; case eByteOrderLittle: response.PutCString ("endian:little;"); break; case eByteOrderPDP: response.PutCString ("endian:pdp;"); break; default: response.PutCString ("endian:unknown;"); break; } uint32_t major = UINT32_MAX; uint32_t minor = UINT32_MAX; uint32_t update = UINT32_MAX; if (HostInfo::GetOSVersion(major, minor, update)) { if (major != UINT32_MAX) { response.Printf("os_version:%u", major); if (minor != UINT32_MAX) { response.Printf(".%u", minor); if (update != UINT32_MAX) response.Printf(".%u", update); } response.PutChar(';'); } } std::string s; if (HostInfo::GetOSBuildString(s)) { response.PutCString ("os_build:"); response.PutCStringAsRawHex8(s.c_str()); response.PutChar(';'); } if (HostInfo::GetOSKernelDescription(s)) { response.PutCString ("os_kernel:"); response.PutCStringAsRawHex8(s.c_str()); response.PutChar(';'); } #if defined(__APPLE__) #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__) // For iOS devices, we are connected through a USB Mux so we never pretend // to actually have a hostname as far as the remote lldb that is connecting // to this lldb-platform is concerned response.PutCString ("hostname:"); response.PutCStringAsRawHex8("127.0.0.1"); response.PutChar(';'); #else // #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__) if (HostInfo::GetHostname(s)) { response.PutCString ("hostname:"); response.PutCStringAsRawHex8(s.c_str()); response.PutChar(';'); } #endif // #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__) #else // #if defined(__APPLE__) if (HostInfo::GetHostname(s)) { response.PutCString ("hostname:"); response.PutCStringAsRawHex8(s.c_str()); response.PutChar(';'); } #endif // #if defined(__APPLE__) if (g_default_packet_timeout_sec > 0) response.Printf ("default_packet_timeout:%u;", g_default_packet_timeout_sec); return SendPacketNoLock (response.GetData(), response.GetSize()); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_qProcessInfoPID (StringExtractorGDBRemote &packet) { // Packet format: "qProcessInfoPID:%i" where %i is the pid packet.SetFilePos (::strlen ("qProcessInfoPID:")); lldb::pid_t pid = packet.GetU32 (LLDB_INVALID_PROCESS_ID); if (pid != LLDB_INVALID_PROCESS_ID) { ProcessInstanceInfo proc_info; if (Host::GetProcessInfo (pid, proc_info)) { StreamString response; CreateProcessInfoResponse (proc_info, response); return SendPacketNoLock (response.GetData(), response.GetSize()); } } return SendErrorResponse (1); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_qfProcessInfo (StringExtractorGDBRemote &packet) { m_proc_infos_index = 0; m_proc_infos.Clear(); ProcessInstanceInfoMatch match_info; packet.SetFilePos(::strlen ("qfProcessInfo")); if (packet.GetChar() == ':') { std::string key; std::string value; while (packet.GetNameColonValue(key, value)) { bool success = true; if (key.compare("name") == 0) { StringExtractor extractor; extractor.GetStringRef().swap(value); extractor.GetHexByteString (value); match_info.GetProcessInfo().GetExecutableFile().SetFile(value.c_str(), false); } else if (key.compare("name_match") == 0) { if (value.compare("equals") == 0) { match_info.SetNameMatchType (eNameMatchEquals); } else if (value.compare("starts_with") == 0) { match_info.SetNameMatchType (eNameMatchStartsWith); } else if (value.compare("ends_with") == 0) { match_info.SetNameMatchType (eNameMatchEndsWith); } else if (value.compare("contains") == 0) { match_info.SetNameMatchType (eNameMatchContains); } else if (value.compare("regex") == 0) { match_info.SetNameMatchType (eNameMatchRegularExpression); } else { success = false; } } else if (key.compare("pid") == 0) { match_info.GetProcessInfo().SetProcessID (StringConvert::ToUInt32(value.c_str(), LLDB_INVALID_PROCESS_ID, 0, &success)); } else if (key.compare("parent_pid") == 0) { match_info.GetProcessInfo().SetParentProcessID (StringConvert::ToUInt32(value.c_str(), LLDB_INVALID_PROCESS_ID, 0, &success)); } else if (key.compare("uid") == 0) { match_info.GetProcessInfo().SetUserID (StringConvert::ToUInt32(value.c_str(), UINT32_MAX, 0, &success)); } else if (key.compare("gid") == 0) { match_info.GetProcessInfo().SetGroupID (StringConvert::ToUInt32(value.c_str(), UINT32_MAX, 0, &success)); } else if (key.compare("euid") == 0) { match_info.GetProcessInfo().SetEffectiveUserID (StringConvert::ToUInt32(value.c_str(), UINT32_MAX, 0, &success)); } else if (key.compare("egid") == 0) { match_info.GetProcessInfo().SetEffectiveGroupID (StringConvert::ToUInt32(value.c_str(), UINT32_MAX, 0, &success)); } else if (key.compare("all_users") == 0) { match_info.SetMatchAllUsers(Args::StringToBoolean(value.c_str(), false, &success)); } else if (key.compare("triple") == 0) { match_info.GetProcessInfo().GetArchitecture().SetTriple (value.c_str(), NULL); } else { success = false; } if (!success) return SendErrorResponse (2); } } if (Host::FindProcesses (match_info, m_proc_infos)) { // We found something, return the first item by calling the get // subsequent process info packet handler... return Handle_qsProcessInfo (packet); } return SendErrorResponse (3); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_qsProcessInfo (StringExtractorGDBRemote &packet) { if (m_proc_infos_index < m_proc_infos.GetSize()) { StreamString response; CreateProcessInfoResponse (m_proc_infos.GetProcessInfoAtIndex(m_proc_infos_index), response); ++m_proc_infos_index; return SendPacketNoLock (response.GetData(), response.GetSize()); } return SendErrorResponse (4); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_qUserName (StringExtractorGDBRemote &packet) { #if !defined(LLDB_DISABLE_POSIX) Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); if (log) log->Printf("GDBRemoteCommunicationServerCommon::%s begin", __FUNCTION__); // Packet format: "qUserName:%i" where %i is the uid packet.SetFilePos(::strlen ("qUserName:")); uint32_t uid = packet.GetU32 (UINT32_MAX); if (uid != UINT32_MAX) { std::string name; if (HostInfo::LookupUserName(uid, name)) { StreamString response; response.PutCStringAsRawHex8 (name.c_str()); return SendPacketNoLock (response.GetData(), response.GetSize()); } } if (log) log->Printf("GDBRemoteCommunicationServerCommon::%s end", __FUNCTION__); #endif return SendErrorResponse (5); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_qGroupName (StringExtractorGDBRemote &packet) { #if !defined(LLDB_DISABLE_POSIX) // Packet format: "qGroupName:%i" where %i is the gid packet.SetFilePos(::strlen ("qGroupName:")); uint32_t gid = packet.GetU32 (UINT32_MAX); if (gid != UINT32_MAX) { std::string name; if (HostInfo::LookupGroupName(gid, name)) { StreamString response; response.PutCStringAsRawHex8 (name.c_str()); return SendPacketNoLock (response.GetData(), response.GetSize()); } } #endif return SendErrorResponse (6); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_qSpeedTest (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen ("qSpeedTest:")); std::string key; std::string value; bool success = packet.GetNameColonValue(key, value); if (success && key.compare("response_size") == 0) { uint32_t response_size = StringConvert::ToUInt32(value.c_str(), 0, 0, &success); if (success) { if (response_size == 0) return SendOKResponse(); StreamString response; uint32_t bytes_left = response_size; response.PutCString("data:"); while (bytes_left > 0) { if (bytes_left >= 26) { response.PutCString("ABCDEFGHIJKLMNOPQRSTUVWXYZ"); bytes_left -= 26; } else { response.Printf ("%*.*s;", bytes_left, bytes_left, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"); bytes_left = 0; } } return SendPacketNoLock (response.GetData(), response.GetSize()); } } return SendErrorResponse (7); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_vFile_Open (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("vFile:open:")); std::string path; packet.GetHexByteStringTerminatedBy(path,','); if (!path.empty()) { if (packet.GetChar() == ',') { uint32_t flags = File::ConvertOpenOptionsForPOSIXOpen( packet.GetHexMaxU32(false, 0)); if (packet.GetChar() == ',') { mode_t mode = packet.GetHexMaxU32(false, 0600); Error error; const FileSpec path_spec{path, true}; int fd = ::open(path_spec.GetCString(), flags, mode); const int save_errno = fd == -1 ? errno : 0; StreamString response; response.PutChar('F'); response.Printf("%i", fd); if (save_errno) response.Printf(",%i", save_errno); return SendPacketNoLock(response.GetData(), response.GetSize()); } } } return SendErrorResponse(18); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_vFile_Close (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("vFile:close:")); int fd = packet.GetS32(-1); Error error; int err = -1; int save_errno = 0; if (fd >= 0) { err = close(fd); save_errno = err == -1 ? errno : 0; } else { save_errno = EINVAL; } StreamString response; response.PutChar('F'); response.Printf("%i", err); if (save_errno) response.Printf(",%i", save_errno); return SendPacketNoLock(response.GetData(), response.GetSize()); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_vFile_pRead (StringExtractorGDBRemote &packet) { #ifdef _WIN32 // Not implemented on Windows return SendUnimplementedResponse("GDBRemoteCommunicationServerCommon::Handle_vFile_pRead() unimplemented"); #else StreamGDBRemote response; packet.SetFilePos(::strlen("vFile:pread:")); int fd = packet.GetS32(-1); if (packet.GetChar() == ',') { uint64_t count = packet.GetU64(UINT64_MAX); if (packet.GetChar() == ',') { uint64_t offset = packet.GetU64(UINT32_MAX); if (count == UINT64_MAX) { response.Printf("F-1:%i", EINVAL); return SendPacketNoLock(response.GetData(), response.GetSize()); } std::string buffer(count, 0); const ssize_t bytes_read = ::pread (fd, &buffer[0], buffer.size(), offset); const int save_errno = bytes_read == -1 ? errno : 0; response.PutChar('F'); response.Printf("%zi", bytes_read); if (save_errno) response.Printf(",%i", save_errno); else { response.PutChar(';'); response.PutEscapedBytes(&buffer[0], bytes_read); } return SendPacketNoLock(response.GetData(), response.GetSize()); } } return SendErrorResponse(21); #endif } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite (StringExtractorGDBRemote &packet) { #ifdef _WIN32 return SendUnimplementedResponse("GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite() unimplemented"); #else packet.SetFilePos(::strlen("vFile:pwrite:")); StreamGDBRemote response; response.PutChar('F'); int fd = packet.GetU32(UINT32_MAX); if (packet.GetChar() == ',') { off_t offset = packet.GetU64(UINT32_MAX); if (packet.GetChar() == ',') { std::string buffer; if (packet.GetEscapedBinaryData(buffer)) { const ssize_t bytes_written = ::pwrite (fd, buffer.data(), buffer.size(), offset); const int save_errno = bytes_written == -1 ? errno : 0; response.Printf("%zi", bytes_written); if (save_errno) response.Printf(",%i", save_errno); } else { response.Printf ("-1,%i", EINVAL); } return SendPacketNoLock(response.GetData(), response.GetSize()); } } return SendErrorResponse(27); #endif } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_vFile_Size (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("vFile:size:")); std::string path; packet.GetHexByteString(path); if (!path.empty()) { lldb::user_id_t retcode = FileSystem::GetFileSize(FileSpec(path.c_str(), false)); StreamString response; response.PutChar('F'); response.PutHex64(retcode); if (retcode == UINT64_MAX) { response.PutChar(','); response.PutHex64(retcode); // TODO: replace with Host::GetSyswideErrorCode() } return SendPacketNoLock(response.GetData(), response.GetSize()); } return SendErrorResponse(22); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_vFile_Mode (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("vFile:mode:")); std::string path; packet.GetHexByteString(path); if (!path.empty()) { Error error; const uint32_t mode = File::GetPermissions(FileSpec{path, true}, error); StreamString response; response.Printf("F%u", mode); if (mode == 0 || error.Fail()) response.Printf(",%i", (int)error.GetError()); return SendPacketNoLock(response.GetData(), response.GetSize()); } return SendErrorResponse(23); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_vFile_Exists (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("vFile:exists:")); std::string path; packet.GetHexByteString(path); if (!path.empty()) { bool retcode = FileSystem::GetFileExists(FileSpec(path.c_str(), false)); StreamString response; response.PutChar('F'); response.PutChar(','); if (retcode) response.PutChar('1'); else response.PutChar('0'); return SendPacketNoLock(response.GetData(), response.GetSize()); } return SendErrorResponse(24); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_vFile_symlink (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("vFile:symlink:")); std::string dst, src; packet.GetHexByteStringTerminatedBy(dst, ','); packet.GetChar(); // Skip ',' char packet.GetHexByteString(src); Error error = FileSystem::Symlink(FileSpec{src, true}, FileSpec{dst, false}); StreamString response; response.Printf("F%u,%u", error.GetError(), error.GetError()); return SendPacketNoLock(response.GetData(), response.GetSize()); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_vFile_unlink (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("vFile:unlink:")); std::string path; packet.GetHexByteString(path); Error error = FileSystem::Unlink(FileSpec{path, true}); StreamString response; response.Printf("F%u,%u", error.GetError(), error.GetError()); return SendPacketNoLock(response.GetData(), response.GetSize()); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_qPlatform_shell (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("qPlatform_shell:")); std::string path; std::string working_dir; packet.GetHexByteStringTerminatedBy(path,','); if (!path.empty()) { if (packet.GetChar() == ',') { // FIXME: add timeout to qPlatform_shell packet // uint32_t timeout = packet.GetHexMaxU32(false, 32); uint32_t timeout = 10; if (packet.GetChar() == ',') packet.GetHexByteString(working_dir); int status, signo; std::string output; Error err = Host::RunShellCommand(path.c_str(), FileSpec{working_dir, true}, &status, &signo, &output, timeout); StreamGDBRemote response; if (err.Fail()) { response.PutCString("F,"); response.PutHex32(UINT32_MAX); } else { response.PutCString("F,"); response.PutHex32(status); response.PutChar(','); response.PutHex32(signo); response.PutChar(','); response.PutEscapedBytes(output.c_str(), output.size()); } return SendPacketNoLock(response.GetData(), response.GetSize()); } } return SendErrorResponse(24); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_vFile_Stat (StringExtractorGDBRemote &packet) { return SendUnimplementedResponse("GDBRemoteCommunicationServerCommon::Handle_vFile_Stat() unimplemented"); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_vFile_MD5 (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("vFile:MD5:")); std::string path; packet.GetHexByteString(path); if (!path.empty()) { uint64_t a,b; StreamGDBRemote response; if (!FileSystem::CalculateMD5(FileSpec(path.c_str(), false), a, b)) { response.PutCString("F,"); response.PutCString("x"); } else { response.PutCString("F,"); response.PutHex64(a); response.PutHex64(b); } return SendPacketNoLock(response.GetData(), response.GetSize()); } return SendErrorResponse(25); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_qPlatform_mkdir (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("qPlatform_mkdir:")); mode_t mode = packet.GetHexMaxU32(false, UINT32_MAX); if (packet.GetChar() == ',') { std::string path; packet.GetHexByteString(path); Error error = FileSystem::MakeDirectory(FileSpec{path, false}, mode); StreamGDBRemote response; response.Printf("F%u", error.GetError()); return SendPacketNoLock(response.GetData(), response.GetSize()); } return SendErrorResponse(20); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_qPlatform_chmod (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("qPlatform_chmod:")); mode_t mode = packet.GetHexMaxU32(false, UINT32_MAX); if (packet.GetChar() == ',') { std::string path; packet.GetHexByteString(path); Error error = FileSystem::SetFilePermissions(FileSpec{path, true}, mode); StreamGDBRemote response; response.Printf("F%u", error.GetError()); return SendPacketNoLock(response.GetData(), response.GetSize()); } return SendErrorResponse(19); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_qSupported (StringExtractorGDBRemote &packet) { StreamGDBRemote response; // Features common to lldb-platform and llgs. uint32_t max_packet_size = 128 * 1024; // 128KBytes is a reasonable max packet size--debugger can always use less response.Printf ("PacketSize=%x", max_packet_size); response.PutCString (";QStartNoAckMode+"); response.PutCString (";QThreadSuffixSupported+"); response.PutCString (";QListThreadsInStopReply+"); response.PutCString (";qEcho+"); #if defined(__linux__) response.PutCString (";qXfer:auxv:read+"); #endif return SendPacketNoLock(response.GetData(), response.GetSize()); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_QThreadSuffixSupported (StringExtractorGDBRemote &packet) { m_thread_suffix_supported = true; return SendOKResponse(); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_QListThreadsInStopReply (StringExtractorGDBRemote &packet) { m_list_threads_in_stop_reply = true; return SendOKResponse(); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_QSetDetachOnError (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen ("QSetDetachOnError:")); if (packet.GetU32(0)) m_process_launch_info.GetFlags().Set (eLaunchFlagDetachOnError); else m_process_launch_info.GetFlags().Clear (eLaunchFlagDetachOnError); return SendOKResponse (); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_QStartNoAckMode (StringExtractorGDBRemote &packet) { // Send response first before changing m_send_acks to we ack this packet PacketResult packet_result = SendOKResponse (); m_send_acks = false; return packet_result; } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_QSetSTDIN (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen ("QSetSTDIN:")); FileAction file_action; std::string path; packet.GetHexByteString(path); const bool read = true; const bool write = false; if (file_action.Open(STDIN_FILENO, FileSpec{path, false}, read, write)) { m_process_launch_info.AppendFileAction(file_action); return SendOKResponse (); } return SendErrorResponse (15); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_QSetSTDOUT (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen ("QSetSTDOUT:")); FileAction file_action; std::string path; packet.GetHexByteString(path); const bool read = false; const bool write = true; if (file_action.Open(STDOUT_FILENO, FileSpec{path, false}, read, write)) { m_process_launch_info.AppendFileAction(file_action); return SendOKResponse (); } return SendErrorResponse (16); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_QSetSTDERR (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen ("QSetSTDERR:")); FileAction file_action; std::string path; packet.GetHexByteString(path); const bool read = false; const bool write = true; if (file_action.Open(STDERR_FILENO, FileSpec{path, false}, read, write)) { m_process_launch_info.AppendFileAction(file_action); return SendOKResponse (); } return SendErrorResponse (17); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_qLaunchSuccess (StringExtractorGDBRemote &packet) { if (m_process_launch_error.Success()) return SendOKResponse(); StreamString response; response.PutChar('E'); response.PutCString(m_process_launch_error.AsCString("")); return SendPacketNoLock (response.GetData(), response.GetSize()); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_QEnvironment (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen ("QEnvironment:")); const uint32_t bytes_left = packet.GetBytesLeft(); if (bytes_left > 0) { m_process_launch_info.GetEnvironmentEntries ().AppendArgument (packet.Peek()); return SendOKResponse (); } return SendErrorResponse (12); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_QEnvironmentHexEncoded (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("QEnvironmentHexEncoded:")); const uint32_t bytes_left = packet.GetBytesLeft(); if (bytes_left > 0) { std::string str; packet.GetHexByteString(str); m_process_launch_info.GetEnvironmentEntries().AppendArgument(str.c_str()); return SendOKResponse(); } return SendErrorResponse(12); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_QLaunchArch (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen ("QLaunchArch:")); const uint32_t bytes_left = packet.GetBytesLeft(); if (bytes_left > 0) { const char* arch_triple = packet.Peek(); ArchSpec arch_spec(arch_triple,NULL); m_process_launch_info.SetArchitecture(arch_spec); return SendOKResponse(); } return SendErrorResponse(13); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_A (StringExtractorGDBRemote &packet) { // The 'A' packet is the most over designed packet ever here with // redundant argument indexes, redundant argument lengths and needed hex // encoded argument string values. Really all that is needed is a comma // separated hex encoded argument value list, but we will stay true to the // documented version of the 'A' packet here... Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); int actual_arg_index = 0; packet.SetFilePos(1); // Skip the 'A' bool success = true; while (success && packet.GetBytesLeft() > 0) { // Decode the decimal argument string length. This length is the // number of hex nibbles in the argument string value. const uint32_t arg_len = packet.GetU32(UINT32_MAX); if (arg_len == UINT32_MAX) success = false; else { // Make sure the argument hex string length is followed by a comma if (packet.GetChar() != ',') success = false; else { // Decode the argument index. We ignore this really because // who would really send down the arguments in a random order??? const uint32_t arg_idx = packet.GetU32(UINT32_MAX); if (arg_idx == UINT32_MAX) success = false; else { // Make sure the argument index is followed by a comma if (packet.GetChar() != ',') success = false; else { // Decode the argument string value from hex bytes // back into a UTF8 string and make sure the length // matches the one supplied in the packet std::string arg; if (packet.GetHexByteStringFixedLength(arg, arg_len) != (arg_len / 2)) success = false; else { // If there are any bytes left if (packet.GetBytesLeft()) { if (packet.GetChar() != ',') success = false; } if (success) { if (arg_idx == 0) m_process_launch_info.GetExecutableFile().SetFile(arg.c_str(), false); m_process_launch_info.GetArguments().AppendArgument(arg.c_str()); if (log) log->Printf ("LLGSPacketHandler::%s added arg %d: \"%s\"", __FUNCTION__, actual_arg_index, arg.c_str ()); ++actual_arg_index; } } } } } } } if (success) { m_process_launch_error = LaunchProcess (); if (m_process_launch_info.GetProcessID() != LLDB_INVALID_PROCESS_ID) { return SendOKResponse (); } else { Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); if (log) log->Printf("LLGSPacketHandler::%s failed to launch exe: %s", __FUNCTION__, m_process_launch_error.AsCString()); } } return SendErrorResponse (8); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_qEcho (StringExtractorGDBRemote &packet) { // Just echo back the exact same packet for qEcho... return SendPacketNoLock(packet.GetStringRef().c_str(), packet.GetStringRef().size()); } GDBRemoteCommunication::PacketResult GDBRemoteCommunicationServerCommon::Handle_qModuleInfo (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen ("qModuleInfo:")); std::string module_path; packet.GetHexByteStringTerminatedBy(module_path, ';'); if (module_path.empty()) return SendErrorResponse (1); if (packet.GetChar() != ';') return SendErrorResponse (2); std::string triple; packet.GetHexByteString(triple); ArchSpec arch(triple.c_str()); const FileSpec req_module_path_spec(module_path.c_str(), true); const FileSpec module_path_spec = FindModuleFile(req_module_path_spec.GetPath(), arch); const ModuleSpec module_spec(module_path_spec, arch); ModuleSpecList module_specs; if (!ObjectFile::GetModuleSpecifications(module_path_spec, 0, 0, module_specs)) return SendErrorResponse (3); ModuleSpec matched_module_spec; if (!module_specs.FindMatchingModuleSpec(module_spec, matched_module_spec)) return SendErrorResponse (4); const auto file_offset = matched_module_spec.GetObjectOffset(); const auto file_size = matched_module_spec.GetObjectSize(); const auto uuid_str = matched_module_spec.GetUUID().GetAsString(""); StreamGDBRemote response; if (uuid_str.empty()) { std::string md5_hash; if (!FileSystem::CalculateMD5AsString(matched_module_spec.GetFileSpec(), file_offset, file_size, md5_hash)) return SendErrorResponse (5); response.PutCString ("md5:"); response.PutCStringAsRawHex8(md5_hash.c_str()); } else{ response.PutCString ("uuid:"); response.PutCStringAsRawHex8(uuid_str.c_str()); } response.PutChar(';'); const auto &module_arch = matched_module_spec.GetArchitecture(); response.PutCString("triple:"); response.PutCStringAsRawHex8( module_arch.GetTriple().getTriple().c_str()); response.PutChar(';'); response.PutCString("file_path:"); response.PutCStringAsRawHex8(module_path_spec.GetCString()); response.PutChar(';'); response.PutCString("file_offset:"); response.PutHex64(file_offset); response.PutChar(';'); response.PutCString("file_size:"); response.PutHex64(file_size); response.PutChar(';'); return SendPacketNoLock(response.GetData(), response.GetSize()); } void GDBRemoteCommunicationServerCommon::CreateProcessInfoResponse (const ProcessInstanceInfo &proc_info, StreamString &response) { response.Printf ("pid:%" PRIu64 ";ppid:%" PRIu64 ";uid:%i;gid:%i;euid:%i;egid:%i;", proc_info.GetProcessID(), proc_info.GetParentProcessID(), proc_info.GetUserID(), proc_info.GetGroupID(), proc_info.GetEffectiveUserID(), proc_info.GetEffectiveGroupID()); response.PutCString ("name:"); response.PutCStringAsRawHex8(proc_info.GetExecutableFile().GetCString()); response.PutChar(';'); const ArchSpec &proc_arch = proc_info.GetArchitecture(); if (proc_arch.IsValid()) { const llvm::Triple &proc_triple = proc_arch.GetTriple(); response.PutCString("triple:"); response.PutCStringAsRawHex8(proc_triple.getTriple().c_str()); response.PutChar(';'); } } void GDBRemoteCommunicationServerCommon::CreateProcessInfoResponse_DebugServerStyle ( const ProcessInstanceInfo &proc_info, StreamString &response) { response.Printf ("pid:%" PRIx64 ";parent-pid:%" PRIx64 ";real-uid:%x;real-gid:%x;effective-uid:%x;effective-gid:%x;", proc_info.GetProcessID(), proc_info.GetParentProcessID(), proc_info.GetUserID(), proc_info.GetGroupID(), proc_info.GetEffectiveUserID(), proc_info.GetEffectiveGroupID()); const ArchSpec &proc_arch = proc_info.GetArchitecture(); if (proc_arch.IsValid()) { const llvm::Triple &proc_triple = proc_arch.GetTriple(); #if defined(__APPLE__) // We'll send cputype/cpusubtype. const uint32_t cpu_type = proc_arch.GetMachOCPUType(); if (cpu_type != 0) response.Printf ("cputype:%" PRIx32 ";", cpu_type); const uint32_t cpu_subtype = proc_arch.GetMachOCPUSubType(); if (cpu_subtype != 0) response.Printf ("cpusubtype:%" PRIx32 ";", cpu_subtype); const std::string vendor = proc_triple.getVendorName (); if (!vendor.empty ()) response.Printf ("vendor:%s;", vendor.c_str ()); #else // We'll send the triple. response.PutCString("triple:"); response.PutCStringAsRawHex8(proc_triple.getTriple().c_str()); response.PutChar(';'); #endif std::string ostype = proc_triple.getOSName (); // Adjust so ostype reports ios for Apple/ARM and Apple/ARM64. if (proc_triple.getVendor () == llvm::Triple::Apple) { switch (proc_triple.getArch ()) { case llvm::Triple::arm: case llvm::Triple::thumb: case llvm::Triple::aarch64: ostype = "ios"; break; default: // No change. break; } } response.Printf ("ostype:%s;", ostype.c_str ()); switch (proc_arch.GetByteOrder ()) { case lldb::eByteOrderLittle: response.PutCString ("endian:little;"); break; case lldb::eByteOrderBig: response.PutCString ("endian:big;"); break; case lldb::eByteOrderPDP: response.PutCString ("endian:pdp;"); break; default: // Nothing. break; } if (proc_triple.isArch64Bit ()) response.PutCString ("ptrsize:8;"); else if (proc_triple.isArch32Bit ()) response.PutCString ("ptrsize:4;"); else if (proc_triple.isArch16Bit ()) response.PutCString ("ptrsize:2;"); } } FileSpec GDBRemoteCommunicationServerCommon::FindModuleFile(const std::string& module_path, const ArchSpec& arch) { #ifdef __ANDROID__ return HostInfoAndroid::ResolveLibraryPath(module_path, arch); #else return FileSpec(module_path.c_str(), true); #endif }