//===-- GDBRemoteCommunicationServer.cpp ------------------------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// #include #include "GDBRemoteCommunicationServer.h" #include "lldb/Core/StreamGDBRemote.h" // C Includes // C++ Includes // Other libraries and framework includes #include "llvm/ADT/Triple.h" #include "lldb/Interpreter/Args.h" #include "lldb/Core/ConnectionFileDescriptor.h" #include "lldb/Core/Log.h" #include "lldb/Core/State.h" #include "lldb/Core/StreamString.h" #include "lldb/Host/Endian.h" #include "lldb/Host/File.h" #include "lldb/Host/Host.h" #include "lldb/Host/TimeValue.h" #include "lldb/Target/Process.h" // Project includes #include "Utility/StringExtractorGDBRemote.h" #include "ProcessGDBRemote.h" #include "ProcessGDBRemoteLog.h" using namespace lldb; using namespace lldb_private; //---------------------------------------------------------------------- // GDBRemoteCommunicationServer constructor //---------------------------------------------------------------------- GDBRemoteCommunicationServer::GDBRemoteCommunicationServer(bool is_platform) : GDBRemoteCommunication ("gdb-remote.server", "gdb-remote.server.rx_packet", is_platform), m_async_thread (LLDB_INVALID_HOST_THREAD), m_process_launch_info (), m_process_launch_error (), m_spawned_pids (), m_spawned_pids_mutex (Mutex::eMutexTypeRecursive), m_proc_infos (), m_proc_infos_index (0), m_lo_port_num (0), m_hi_port_num (0), m_next_port (0), m_use_port_range (false) { // We seldom need to override the port number that the debugserver process // starts with. We just pass in 0 to let the system choose a random port. // In rare situation where the need arises, use two environment variables // to override. uint16_t lo_port_num = 0; uint16_t hi_port_num = 0; const char *lo_port_c_str = getenv("LLDB_PLATFORM_START_DEBUG_SERVER_LO_PORT"); if (lo_port_c_str) lo_port_num = ::atoi(lo_port_c_str); const char *hi_port_c_str = getenv("LLDB_PLATFORM_START_DEBUG_SERVER_HI_PORT"); if (hi_port_c_str) hi_port_num = ::atoi(hi_port_c_str); if (lo_port_num && hi_port_num && lo_port_num < hi_port_num) { SetPortRange(lo_port_num, hi_port_num); } } //---------------------------------------------------------------------- // Destructor //---------------------------------------------------------------------- GDBRemoteCommunicationServer::~GDBRemoteCommunicationServer() { } //void * //GDBRemoteCommunicationServer::AsyncThread (void *arg) //{ // GDBRemoteCommunicationServer *server = (GDBRemoteCommunicationServer*) arg; // // Log *log;// (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); // if (log) // log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %i) thread starting...", __FUNCTION__, arg, process->GetID()); // // StringExtractorGDBRemote packet; // // while () // { // if (packet. // } // // if (log) // log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %i) thread exiting...", __FUNCTION__, arg, process->GetID()); // // process->m_async_thread = LLDB_INVALID_HOST_THREAD; // return NULL; //} // bool GDBRemoteCommunicationServer::GetPacketAndSendResponse (uint32_t timeout_usec, Error &error, bool &interrupt, bool &quit) { StringExtractorGDBRemote packet; if (WaitForPacketWithTimeoutMicroSecondsNoLock (packet, timeout_usec)) { const StringExtractorGDBRemote::ServerPacketType packet_type = packet.GetServerPacketType (); switch (packet_type) { case StringExtractorGDBRemote::eServerPacketType_nack: case StringExtractorGDBRemote::eServerPacketType_ack: break; case StringExtractorGDBRemote::eServerPacketType_invalid: error.SetErrorString("invalid packet"); quit = true; break; case StringExtractorGDBRemote::eServerPacketType_interrupt: error.SetErrorString("interrupt received"); interrupt = true; break; case StringExtractorGDBRemote::eServerPacketType_unimplemented: return SendUnimplementedResponse (packet.GetStringRef().c_str()) > 0; case StringExtractorGDBRemote::eServerPacketType_A: return Handle_A (packet); case StringExtractorGDBRemote::eServerPacketType_qfProcessInfo: return Handle_qfProcessInfo (packet); case StringExtractorGDBRemote::eServerPacketType_qsProcessInfo: return Handle_qsProcessInfo (packet); case StringExtractorGDBRemote::eServerPacketType_qC: return Handle_qC (packet); case StringExtractorGDBRemote::eServerPacketType_qHostInfo: return Handle_qHostInfo (packet); case StringExtractorGDBRemote::eServerPacketType_qLaunchGDBServer: return Handle_qLaunchGDBServer (packet); case StringExtractorGDBRemote::eServerPacketType_qKillSpawnedProcess: return Handle_qKillSpawnedProcess (packet); case StringExtractorGDBRemote::eServerPacketType_qLaunchSuccess: return Handle_qLaunchSuccess (packet); case StringExtractorGDBRemote::eServerPacketType_qGroupName: return Handle_qGroupName (packet); case StringExtractorGDBRemote::eServerPacketType_qProcessInfoPID: return Handle_qProcessInfoPID (packet); case StringExtractorGDBRemote::eServerPacketType_qSpeedTest: return Handle_qSpeedTest (packet); case StringExtractorGDBRemote::eServerPacketType_qUserName: return Handle_qUserName (packet); case StringExtractorGDBRemote::eServerPacketType_QEnvironment: return Handle_QEnvironment (packet); case StringExtractorGDBRemote::eServerPacketType_QLaunchArch: return Handle_QLaunchArch (packet); case StringExtractorGDBRemote::eServerPacketType_QSetDisableASLR: return Handle_QSetDisableASLR (packet); case StringExtractorGDBRemote::eServerPacketType_QSetSTDIN: return Handle_QSetSTDIN (packet); case StringExtractorGDBRemote::eServerPacketType_QSetSTDOUT: return Handle_QSetSTDOUT (packet); case StringExtractorGDBRemote::eServerPacketType_QSetSTDERR: return Handle_QSetSTDERR (packet); case StringExtractorGDBRemote::eServerPacketType_QSetWorkingDir: return Handle_QSetWorkingDir (packet); case StringExtractorGDBRemote::eServerPacketType_QStartNoAckMode: return Handle_QStartNoAckMode (packet); case StringExtractorGDBRemote::eServerPacketType_qPlatform_IO_MkDir: return Handle_qPlatform_IO_MkDir (packet); case StringExtractorGDBRemote::eServerPacketType_qPlatform_RunCommand: return Handle_qPlatform_RunCommand (packet); case StringExtractorGDBRemote::eServerPacketType_vFile_Open: return Handle_vFile_Open (packet); case StringExtractorGDBRemote::eServerPacketType_vFile_Close: return Handle_vFile_Close (packet); case StringExtractorGDBRemote::eServerPacketType_vFile_pRead: return Handle_vFile_pRead (packet); case StringExtractorGDBRemote::eServerPacketType_vFile_pWrite: return Handle_vFile_pWrite (packet); case StringExtractorGDBRemote::eServerPacketType_vFile_Size: return Handle_vFile_Size (packet); case StringExtractorGDBRemote::eServerPacketType_vFile_Mode: return Handle_vFile_Mode (packet); case StringExtractorGDBRemote::eServerPacketType_vFile_Exists: return Handle_vFile_Exists (packet); case StringExtractorGDBRemote::eServerPacketType_vFile_Stat: return Handle_vFile_Stat (packet); case StringExtractorGDBRemote::eServerPacketType_vFile_MD5: return Handle_vFile_MD5 (packet); } return true; } else { if (!IsConnected()) error.SetErrorString("lost connection"); else error.SetErrorString("timeout"); } return false; } size_t GDBRemoteCommunicationServer::SendUnimplementedResponse (const char *) { // TODO: Log the packet we aren't handling... return SendPacketNoLock ("", 0); } size_t GDBRemoteCommunicationServer::SendErrorResponse (uint8_t err) { char packet[16]; int packet_len = ::snprintf (packet, sizeof(packet), "E%2.2x", err); assert (packet_len < (int)sizeof(packet)); return SendPacketNoLock (packet, packet_len); } size_t GDBRemoteCommunicationServer::SendOKResponse () { return SendPacketNoLock ("OK", 2); } bool GDBRemoteCommunicationServer::HandshakeWithClient(Error *error_ptr) { return GetAck(); } bool GDBRemoteCommunicationServer::Handle_qHostInfo (StringExtractorGDBRemote &packet) { StreamString response; // $cputype:16777223;cpusubtype:3;ostype:Darwin;vendor:apple;endian:little;ptrsize:8;#00 ArchSpec host_arch (Host::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()); 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;"); switch (lldb::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 (Host::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 (Host::GetOSBuildString (s)) { response.PutCString ("os_build:"); response.PutCStringAsRawHex8(s.c_str()); response.PutChar(';'); } if (Host::GetOSKernelDescription (s)) { response.PutCString ("os_kernel:"); response.PutCStringAsRawHex8(s.c_str()); response.PutChar(';'); } if (Host::GetHostname (s)) { response.PutCString ("hostname:"); response.PutCStringAsRawHex8(s.c_str()); response.PutChar(';'); } return SendPacketNoLock (response.GetData(), response.GetSize()) > 0; } static void 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.GetName()); 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(';'); } } bool GDBRemoteCommunicationServer::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); } bool GDBRemoteCommunicationServer::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 (Args::StringToUInt32(value.c_str(), LLDB_INVALID_PROCESS_ID, 0, &success)); } else if (key.compare("parent_pid") == 0) { match_info.GetProcessInfo().SetParentProcessID (Args::StringToUInt32(value.c_str(), LLDB_INVALID_PROCESS_ID, 0, &success)); } else if (key.compare("uid") == 0) { match_info.GetProcessInfo().SetUserID (Args::StringToUInt32(value.c_str(), UINT32_MAX, 0, &success)); } else if (key.compare("gid") == 0) { match_info.GetProcessInfo().SetGroupID (Args::StringToUInt32(value.c_str(), UINT32_MAX, 0, &success)); } else if (key.compare("euid") == 0) { match_info.GetProcessInfo().SetEffectiveUserID (Args::StringToUInt32(value.c_str(), UINT32_MAX, 0, &success)); } else if (key.compare("egid") == 0) { match_info.GetProcessInfo().SetEffectiveGroupID (Args::StringToUInt32(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); } bool GDBRemoteCommunicationServer::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); } bool GDBRemoteCommunicationServer::Handle_qUserName (StringExtractorGDBRemote &packet) { // 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 (Host::GetUserName (uid, name)) { StreamString response; response.PutCStringAsRawHex8 (name.c_str()); return SendPacketNoLock (response.GetData(), response.GetSize()); } } return SendErrorResponse (5); } bool GDBRemoteCommunicationServer::Handle_qGroupName (StringExtractorGDBRemote &packet) { // 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 (Host::GetGroupName (gid, name)) { StreamString response; response.PutCStringAsRawHex8 (name.c_str()); return SendPacketNoLock (response.GetData(), response.GetSize()); } } return SendErrorResponse (6); } bool GDBRemoteCommunicationServer::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 = Args::StringToUInt32(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); } static void * AcceptPortFromInferior (void *arg) { const char *connect_url = (const char *)arg; ConnectionFileDescriptor file_conn; Error error; if (file_conn.Connect (connect_url, &error) == eConnectionStatusSuccess) { char pid_str[256]; ::memset (pid_str, 0, sizeof(pid_str)); ConnectionStatus status; const size_t pid_str_len = file_conn.Read (pid_str, sizeof(pid_str), 0, status, NULL); if (pid_str_len > 0) { int pid = atoi (pid_str); return (void *)(intptr_t)pid; } } return NULL; } // //static bool //WaitForProcessToSIGSTOP (const lldb::pid_t pid, const int timeout_in_seconds) //{ // const int time_delta_usecs = 100000; // const int num_retries = timeout_in_seconds/time_delta_usecs; // for (int i=0; i 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 becuase // 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.GetHexByteString(arg) != (arg_len / 2)) success = false; else { // If there are any bytes lft 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 (success) { m_process_launch_info.GetFlags().Set (eLaunchFlagDebug); m_process_launch_error = Host::LaunchProcess (m_process_launch_info); if (m_process_launch_info.GetProcessID() != LLDB_INVALID_PROCESS_ID) { return SendOKResponse (); } } return SendErrorResponse (8); } bool GDBRemoteCommunicationServer::Handle_qC (StringExtractorGDBRemote &packet) { lldb::pid_t pid = m_process_launch_info.GetProcessID(); StreamString response; response.Printf("QC%" PRIx64, pid); if (m_is_platform) { // If we launch a process and this GDB server is acting as a platform, // then we need to clear the process launch state so we can start // launching another process. In order to launch a process a bunch or // packets need to be sent: environment packets, working directory, // disable ASLR, and many more settings. When we launch a process we // then need to know when to clear this information. Currently we are // selecting the 'qC' packet as that packet which seems to make the most // sense. if (pid != LLDB_INVALID_PROCESS_ID) { m_process_launch_info.Clear(); } } return SendPacketNoLock (response.GetData(), response.GetSize()); } bool GDBRemoteCommunicationServer::DebugserverProcessReaped (lldb::pid_t pid) { Mutex::Locker locker (m_spawned_pids_mutex); return m_spawned_pids.erase(pid) > 0; } bool GDBRemoteCommunicationServer::ReapDebugserverProcess (void *callback_baton, lldb::pid_t pid, bool exited, int signal, // Zero for no signal int status) // Exit value of process if signal is zero { GDBRemoteCommunicationServer *server = (GDBRemoteCommunicationServer *)callback_baton; server->DebugserverProcessReaped (pid); return true; } bool GDBRemoteCommunicationServer::Handle_qLaunchGDBServer (StringExtractorGDBRemote &packet) { #ifdef _WIN32 // No unix sockets on windows return false; #else // Spawn a local debugserver as a platform so we can then attach or launch // a process... if (m_is_platform) { // Sleep and wait a bit for debugserver to start to listen... ConnectionFileDescriptor file_conn; char connect_url[PATH_MAX]; Error error; std::string hostname; // TODO: /tmp/ should not be hardcoded. User might want to override /tmp // with the TMPDIR environnement variable char unix_socket_name[PATH_MAX] = "/tmp/XXXXXX"; if (::mkstemp (unix_socket_name) == -1) { error.SetErrorStringWithFormat("failed to make temporary path for a unix socket: %s", strerror(errno)); } else { packet.SetFilePos(::strlen ("qLaunchGDBServer:")); std::string name; std::string value; uint16_t port = UINT16_MAX; while (packet.GetNameColonValue(name, value)) { if (name.compare ("host") == 0) hostname.swap(value); else if (name.compare ("port") == 0) port = Args::StringToUInt32(value.c_str(), 0, 0); } if (port == UINT16_MAX) port = GetAndUpdateNextPort(); ::snprintf (connect_url, sizeof(connect_url), "unix-accept://%s", unix_socket_name); // Spawn a new thread to accept the port that gets bound after // binding to port 0 (zero). lldb::thread_t accept_thread = LLDB_INVALID_HOST_THREAD; if (port == 0) { accept_thread = Host::ThreadCreate (unix_socket_name, AcceptPortFromInferior, connect_url, &error); } if (IS_VALID_LLDB_HOST_THREAD(accept_thread)) { // Spawn a debugserver and try to get the port it listens to. ProcessLaunchInfo debugserver_launch_info; StreamString host_and_port; if (hostname.empty()) hostname = "localhost"; host_and_port.Printf("%s:%u", hostname.c_str(), port); const char *host_and_port_cstr = host_and_port.GetString().c_str(); Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM)); if (log) log->Printf("Launching debugserver with: %s...\n", host_and_port_cstr); error = StartDebugserverProcess (host_and_port_cstr, unix_socket_name, debugserver_launch_info); lldb::pid_t debugserver_pid = debugserver_launch_info.GetProcessID(); if (debugserver_pid != LLDB_INVALID_PROCESS_ID) { { Mutex::Locker locker (m_spawned_pids_mutex); m_spawned_pids.insert(debugserver_pid); } Host::StartMonitoringChildProcess (ReapDebugserverProcess, this, debugserver_pid, false); } if (error.Success()) { bool success = false; if (accept_thread) { thread_result_t accept_thread_result = NULL; if (Host::ThreadJoin (accept_thread, &accept_thread_result, &error)) { if (accept_thread_result) { port = (intptr_t)accept_thread_result; char response[256]; const int response_len = ::snprintf (response, sizeof(response), "pid:%" PRIu64 ";port:%u;", debugserver_pid, port); assert (response_len < sizeof(response)); //m_port_to_pid_map[port] = debugserver_launch_info.GetProcessID(); success = SendPacketNoLock (response, response_len) > 0; } } } else { char response[256]; const int response_len = ::snprintf (response, sizeof(response), "pid:%" PRIu64 ";port:%u;", debugserver_pid, port); assert (response_len < sizeof(response)); //m_port_to_pid_map[port] = debugserver_launch_info.GetProcessID(); success = SendPacketNoLock (response, response_len) > 0; } ::unlink (unix_socket_name); if (!success) { if (debugserver_pid != LLDB_INVALID_PROCESS_ID) ::kill (debugserver_pid, SIGINT); } return success; } } } } return SendErrorResponse (9); #endif } bool GDBRemoteCommunicationServer::Handle_qKillSpawnedProcess (StringExtractorGDBRemote &packet) { // Spawn a local debugserver as a platform so we can then attach or launch // a process... if (m_is_platform) { packet.SetFilePos(::strlen ("qKillSpawnedProcess:")); lldb::pid_t pid = packet.GetU64(LLDB_INVALID_PROCESS_ID); // Scope for locker { Mutex::Locker locker (m_spawned_pids_mutex); if (m_spawned_pids.find(pid) == m_spawned_pids.end()) return SendErrorResponse (10); } Host::Kill (pid, SIGTERM); for (size_t i=0; i<10; ++i) { // Scope for locker { Mutex::Locker locker (m_spawned_pids_mutex); if (m_spawned_pids.find(pid) == m_spawned_pids.end()) return true; } usleep (10000); } // Scope for locker { Mutex::Locker locker (m_spawned_pids_mutex); if (m_spawned_pids.find(pid) == m_spawned_pids.end()) return true; } Host::Kill (pid, SIGKILL); for (size_t i=0; i<10; ++i) { // Scope for locker { Mutex::Locker locker (m_spawned_pids_mutex); if (m_spawned_pids.find(pid) == m_spawned_pids.end()) return true; } usleep (10000); } } return SendErrorResponse (10); } bool GDBRemoteCommunicationServer::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()); } bool GDBRemoteCommunicationServer::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 (11); } bool GDBRemoteCommunicationServer::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(12); } bool GDBRemoteCommunicationServer::Handle_QSetDisableASLR (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen ("QSetDisableASLR:")); if (packet.GetU32(0)) m_process_launch_info.GetFlags().Set (eLaunchFlagDisableASLR); else m_process_launch_info.GetFlags().Clear (eLaunchFlagDisableASLR); return SendOKResponse (); } bool GDBRemoteCommunicationServer::Handle_QSetWorkingDir (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen ("QSetWorkingDir:")); std::string path; packet.GetHexByteString(path); m_process_launch_info.SwapWorkingDirectory (path); return SendOKResponse (); } bool GDBRemoteCommunicationServer::Handle_QSetSTDIN (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen ("QSetSTDIN:")); ProcessLaunchInfo::FileAction file_action; std::string path; packet.GetHexByteString(path); const bool read = false; const bool write = true; if (file_action.Open(STDIN_FILENO, path.c_str(), read, write)) { m_process_launch_info.AppendFileAction(file_action); return SendOKResponse (); } return SendErrorResponse (13); } bool GDBRemoteCommunicationServer::Handle_QSetSTDOUT (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen ("QSetSTDOUT:")); ProcessLaunchInfo::FileAction file_action; std::string path; packet.GetHexByteString(path); const bool read = true; const bool write = false; if (file_action.Open(STDOUT_FILENO, path.c_str(), read, write)) { m_process_launch_info.AppendFileAction(file_action); return SendOKResponse (); } return SendErrorResponse (14); } bool GDBRemoteCommunicationServer::Handle_QSetSTDERR (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen ("QSetSTDERR:")); ProcessLaunchInfo::FileAction file_action; std::string path; packet.GetHexByteString(path); const bool read = true; const bool write = false; if (file_action.Open(STDERR_FILENO, path.c_str(), read, write)) { m_process_launch_info.AppendFileAction(file_action); return SendOKResponse (); } return SendErrorResponse (15); } bool GDBRemoteCommunicationServer::Handle_QStartNoAckMode (StringExtractorGDBRemote &packet) { // Send response first before changing m_send_acks to we ack this packet SendOKResponse (); m_send_acks = false; return true; } bool GDBRemoteCommunicationServer::Handle_qPlatform_IO_MkDir (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("qPlatform_IO_MkDir:")); mode_t mode = packet.GetHexMaxU32(false, UINT32_MAX); if (packet.GetChar() != ',') return false; std::string path; packet.GetHexByteString(path); uint32_t retcode = Host::MakeDirectory(path.c_str(),mode); StreamString response; response.PutHex32(retcode); SendPacketNoLock(response.GetData(), response.GetSize()); return true; } bool GDBRemoteCommunicationServer::Handle_vFile_Open (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("vFile:open:")); std::string path; packet.GetHexByteStringTerminatedBy(path,','); if (path.size() == 0) return false; if (packet.GetChar() != ',') return false; uint32_t flags = packet.GetHexMaxU32(false, UINT32_MAX); if (packet.GetChar() != ',') return false; mode_t mode = packet.GetHexMaxU32(false, UINT32_MAX); Error error; int fd = ::open (path.c_str(), 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); SendPacketNoLock(response.GetData(), response.GetSize()); return true; } bool GDBRemoteCommunicationServer::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); SendPacketNoLock(response.GetData(), response.GetSize()); return true; } bool GDBRemoteCommunicationServer::Handle_vFile_pRead (StringExtractorGDBRemote &packet) { #ifdef _WIN32 // Not implemented on Windows return false; #else StreamGDBRemote response; packet.SetFilePos(::strlen("vFile:pread:")); int fd = packet.GetS32(-1); if (packet.GetChar() != ',') return false; uint64_t count = packet.GetU64(UINT64_MAX); if (packet.GetChar() != ',') return false; uint64_t offset = packet.GetU64(UINT32_MAX); if (count == UINT64_MAX) { response.Printf("F-1:%i", EINVAL); SendPacketNoLock(response.GetData(), response.GetSize()); return true; } 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); } SendPacketNoLock(response.GetData(), response.GetSize()); return true; #endif } bool GDBRemoteCommunicationServer::Handle_vFile_pWrite (StringExtractorGDBRemote &packet) { #ifdef _WIN32 // Not implemented on Windows return false; #else packet.SetFilePos(::strlen("vFile:pwrite:")); StreamGDBRemote response; response.PutChar('F'); int fd = packet.GetU32(UINT32_MAX); if (packet.GetChar() != ',') return false; off_t offset = packet.GetU64(UINT32_MAX); if (packet.GetChar() != ',') return false; 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); } SendPacketNoLock(response.GetData(), response.GetSize()); return true; #endif } bool GDBRemoteCommunicationServer::Handle_vFile_Size (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("vFile:size:")); std::string path; packet.GetHexByteString(path); if (path.empty()) return false; lldb::user_id_t retcode = Host::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() } SendPacketNoLock(response.GetData(), response.GetSize()); return true; } bool GDBRemoteCommunicationServer::Handle_vFile_Mode (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("vFile:mode:")); std::string path; packet.GetHexByteString(path); if (path.empty()) return false; Error error; const uint32_t mode = File::GetPermissions(path.c_str(), error); StreamString response; response.Printf("F%u", mode); if (mode == 0 || error.Fail()) response.Printf(",%i", (int)error.GetError()); SendPacketNoLock(response.GetData(), response.GetSize()); return true; } bool GDBRemoteCommunicationServer::Handle_vFile_Exists (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("vFile:exists:")); std::string path; packet.GetHexByteString(path); if (path.empty()) return false; bool retcode = Host::GetFileExists(FileSpec(path.c_str(), false)); StreamString response; response.PutChar('F'); response.PutChar(','); if (retcode) response.PutChar('1'); else response.PutChar('0'); SendPacketNoLock(response.GetData(), response.GetSize()); return true; } bool GDBRemoteCommunicationServer::Handle_qPlatform_RunCommand (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("qPlatform_RunCommand:")); std::string path; std::string working_dir; packet.GetHexByteStringTerminatedBy(path,','); if (path.size() == 0) return false; if (packet.GetChar() != ',') return false; // FIXME: add timeout to qPlatform_RunCommand 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(), working_dir.empty() ? NULL : working_dir.c_str(), &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()); } SendPacketNoLock(response.GetData(), response.GetSize()); return true; } bool GDBRemoteCommunicationServer::Handle_vFile_Stat (StringExtractorGDBRemote &packet) { return false; } bool GDBRemoteCommunicationServer::Handle_vFile_MD5 (StringExtractorGDBRemote &packet) { packet.SetFilePos(::strlen("vFile:exists:")); std::string path; packet.GetHexByteString(path); if (path.size() == 0) return false; uint64_t a,b; StreamGDBRemote response; if (Host::CalculateMD5(FileSpec(path.c_str(),false),a,b) == false) { response.PutCString("F,"); response.PutCString("x"); } else { response.PutCString("F,"); response.PutHex64(a); response.PutHex64(b); } SendPacketNoLock(response.GetData(), response.GetSize()); return true; }