//===-- PlatformRemoteGDBServer.cpp -----------------------------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// #include "PlatformRemoteGDBServer.h" #include "lldb/Host/Config.h" // C++ Includes // Other libraries and framework includes // Project includes #include "lldb/Breakpoint/BreakpointLocation.h" #include "lldb/Core/Debugger.h" #include "lldb/Core/Module.h" #include "lldb/Core/ModuleList.h" #include "lldb/Core/ModuleSpec.h" #include "lldb/Core/PluginManager.h" #include "lldb/Core/StreamFile.h" #include "lldb/Host/ConnectionFileDescriptor.h" #include "lldb/Host/Host.h" #include "lldb/Host/HostInfo.h" #include "lldb/Host/PosixApi.h" #include "lldb/Target/Process.h" #include "lldb/Target/Target.h" #include "lldb/Utility/FileSpec.h" #include "lldb/Utility/Log.h" #include "lldb/Utility/Status.h" #include "lldb/Utility/StreamString.h" #include "lldb/Utility/UriParser.h" #include "Plugins/Process/Utility/GDBRemoteSignals.h" using namespace lldb; using namespace lldb_private; using namespace lldb_private::platform_gdb_server; static bool g_initialized = false; void PlatformRemoteGDBServer::Initialize() { Platform::Initialize(); if (g_initialized == false) { g_initialized = true; PluginManager::RegisterPlugin( PlatformRemoteGDBServer::GetPluginNameStatic(), PlatformRemoteGDBServer::GetDescriptionStatic(), PlatformRemoteGDBServer::CreateInstance); } } void PlatformRemoteGDBServer::Terminate() { if (g_initialized) { g_initialized = false; PluginManager::UnregisterPlugin(PlatformRemoteGDBServer::CreateInstance); } Platform::Terminate(); } PlatformSP PlatformRemoteGDBServer::CreateInstance(bool force, const ArchSpec *arch) { bool create = force; if (!create) { create = !arch->TripleVendorWasSpecified() && !arch->TripleOSWasSpecified(); } if (create) return PlatformSP(new PlatformRemoteGDBServer()); return PlatformSP(); } ConstString PlatformRemoteGDBServer::GetPluginNameStatic() { static ConstString g_name("remote-gdb-server"); return g_name; } const char *PlatformRemoteGDBServer::GetDescriptionStatic() { return "A platform that uses the GDB remote protocol as the communication " "transport."; } const char *PlatformRemoteGDBServer::GetDescription() { if (m_platform_description.empty()) { if (IsConnected()) { // Send the get description packet } } if (!m_platform_description.empty()) return m_platform_description.c_str(); return GetDescriptionStatic(); } Status PlatformRemoteGDBServer::ResolveExecutable( const ModuleSpec &module_spec, lldb::ModuleSP &exe_module_sp, const FileSpecList *module_search_paths_ptr) { // copied from PlatformRemoteiOS Status error; // Nothing special to do here, just use the actual file and architecture ModuleSpec resolved_module_spec(module_spec); // Resolve any executable within an apk on Android? // Host::ResolveExecutableInBundle (resolved_module_spec.GetFileSpec()); if (resolved_module_spec.GetFileSpec().Exists() || module_spec.GetUUID().IsValid()) { if (resolved_module_spec.GetArchitecture().IsValid() || resolved_module_spec.GetUUID().IsValid()) { error = ModuleList::GetSharedModule(resolved_module_spec, exe_module_sp, module_search_paths_ptr, NULL, NULL); if (exe_module_sp && exe_module_sp->GetObjectFile()) return error; exe_module_sp.reset(); } // No valid architecture was specified or the exact arch wasn't // found so ask the platform for the architectures that we should be // using (in the correct order) and see if we can find a match that way StreamString arch_names; for (uint32_t idx = 0; GetSupportedArchitectureAtIndex( idx, resolved_module_spec.GetArchitecture()); ++idx) { error = ModuleList::GetSharedModule(resolved_module_spec, exe_module_sp, module_search_paths_ptr, NULL, NULL); // Did we find an executable using one of the if (error.Success()) { if (exe_module_sp && exe_module_sp->GetObjectFile()) break; else error.SetErrorToGenericError(); } if (idx > 0) arch_names.PutCString(", "); arch_names.PutCString( resolved_module_spec.GetArchitecture().GetArchitectureName()); } if (error.Fail() || !exe_module_sp) { if (resolved_module_spec.GetFileSpec().Readable()) { error.SetErrorStringWithFormat( "'%s' doesn't contain any '%s' platform architectures: %s", resolved_module_spec.GetFileSpec().GetPath().c_str(), GetPluginName().GetCString(), arch_names.GetData()); } else { error.SetErrorStringWithFormat( "'%s' is not readable", resolved_module_spec.GetFileSpec().GetPath().c_str()); } } } else { error.SetErrorStringWithFormat( "'%s' does not exist", resolved_module_spec.GetFileSpec().GetPath().c_str()); } return error; } bool PlatformRemoteGDBServer::GetModuleSpec(const FileSpec &module_file_spec, const ArchSpec &arch, ModuleSpec &module_spec) { Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM); const auto module_path = module_file_spec.GetPath(false); if (!m_gdb_client.GetModuleInfo(module_file_spec, arch, module_spec)) { if (log) log->Printf( "PlatformRemoteGDBServer::%s - failed to get module info for %s:%s", __FUNCTION__, module_path.c_str(), arch.GetTriple().getTriple().c_str()); return false; } if (log) { StreamString stream; module_spec.Dump(stream); log->Printf( "PlatformRemoteGDBServer::%s - got module info for (%s:%s) : %s", __FUNCTION__, module_path.c_str(), arch.GetTriple().getTriple().c_str(), stream.GetData()); } return true; } Status PlatformRemoteGDBServer::GetFileWithUUID(const FileSpec &platform_file, const UUID *uuid_ptr, FileSpec &local_file) { // Default to the local case local_file = platform_file; return Status(); } //------------------------------------------------------------------ /// Default Constructor //------------------------------------------------------------------ PlatformRemoteGDBServer::PlatformRemoteGDBServer() : Platform(false), // This is a remote platform m_gdb_client() {} //------------------------------------------------------------------ /// Destructor. /// /// The destructor is virtual since this class is designed to be /// inherited from by the plug-in instance. //------------------------------------------------------------------ PlatformRemoteGDBServer::~PlatformRemoteGDBServer() {} bool PlatformRemoteGDBServer::GetSupportedArchitectureAtIndex(uint32_t idx, ArchSpec &arch) { ArchSpec remote_arch = m_gdb_client.GetSystemArchitecture(); if (idx == 0) { arch = remote_arch; return arch.IsValid(); } else if (idx == 1 && remote_arch.IsValid() && remote_arch.GetTriple().isArch64Bit()) { arch.SetTriple(remote_arch.GetTriple().get32BitArchVariant()); return arch.IsValid(); } return false; } size_t PlatformRemoteGDBServer::GetSoftwareBreakpointTrapOpcode( Target &target, BreakpointSite *bp_site) { // This isn't needed if the z/Z packets are supported in the GDB remote // server. But we might need a packet to detect this. return 0; } bool PlatformRemoteGDBServer::GetRemoteOSVersion() { uint32_t major, minor, update; if (m_gdb_client.GetOSVersion(major, minor, update)) { m_major_os_version = major; m_minor_os_version = minor; m_update_os_version = update; return true; } return false; } bool PlatformRemoteGDBServer::GetRemoteOSBuildString(std::string &s) { return m_gdb_client.GetOSBuildString(s); } bool PlatformRemoteGDBServer::GetRemoteOSKernelDescription(std::string &s) { return m_gdb_client.GetOSKernelDescription(s); } // Remote Platform subclasses need to override this function ArchSpec PlatformRemoteGDBServer::GetRemoteSystemArchitecture() { return m_gdb_client.GetSystemArchitecture(); } FileSpec PlatformRemoteGDBServer::GetRemoteWorkingDirectory() { if (IsConnected()) { Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM); FileSpec working_dir; if (m_gdb_client.GetWorkingDir(working_dir) && log) log->Printf( "PlatformRemoteGDBServer::GetRemoteWorkingDirectory() -> '%s'", working_dir.GetCString()); return working_dir; } else { return Platform::GetRemoteWorkingDirectory(); } } bool PlatformRemoteGDBServer::SetRemoteWorkingDirectory( const FileSpec &working_dir) { if (IsConnected()) { // Clear the working directory it case it doesn't get set correctly. This // will // for use to re-read it Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM); if (log) log->Printf("PlatformRemoteGDBServer::SetRemoteWorkingDirectory('%s')", working_dir.GetCString()); return m_gdb_client.SetWorkingDir(working_dir) == 0; } else return Platform::SetRemoteWorkingDirectory(working_dir); } bool PlatformRemoteGDBServer::IsConnected() const { return m_gdb_client.IsConnected(); } Status PlatformRemoteGDBServer::ConnectRemote(Args &args) { Status error; if (IsConnected()) { error.SetErrorStringWithFormat("the platform is already connected to '%s', " "execute 'platform disconnect' to close the " "current connection", GetHostname()); } else { if (args.GetArgumentCount() == 1) { m_gdb_client.SetConnection(new ConnectionFileDescriptor()); // we're going to reuse the hostname when we connect to the debugserver int port; std::string path; const char *url = args.GetArgumentAtIndex(0); if (!url) return Status("URL is null."); llvm::StringRef scheme, hostname, pathname; if (!UriParser::Parse(url, scheme, hostname, port, pathname)) return Status("Invalid URL: %s", url); m_platform_scheme = scheme; m_platform_hostname = hostname; path = pathname; const ConnectionStatus status = m_gdb_client.Connect(url, &error); if (status == eConnectionStatusSuccess) { if (m_gdb_client.HandshakeWithServer(&error)) { m_gdb_client.GetHostInfo(); // If a working directory was set prior to connecting, send it down // now if (m_working_dir) m_gdb_client.SetWorkingDir(m_working_dir); } else { m_gdb_client.Disconnect(); if (error.Success()) error.SetErrorString("handshake failed"); } } } else { error.SetErrorString( "\"platform connect\" takes a single argument: "); } } return error; } Status PlatformRemoteGDBServer::DisconnectRemote() { Status error; m_gdb_client.Disconnect(&error); m_remote_signals_sp.reset(); return error; } const char *PlatformRemoteGDBServer::GetHostname() { m_gdb_client.GetHostname(m_name); if (m_name.empty()) return NULL; return m_name.c_str(); } const char *PlatformRemoteGDBServer::GetUserName(uint32_t uid) { // Try and get a cache user name first const char *cached_user_name = Platform::GetUserName(uid); if (cached_user_name) return cached_user_name; std::string name; if (m_gdb_client.GetUserName(uid, name)) return SetCachedUserName(uid, name.c_str(), name.size()); SetUserNameNotFound(uid); // Negative cache so we don't keep sending packets return NULL; } const char *PlatformRemoteGDBServer::GetGroupName(uint32_t gid) { const char *cached_group_name = Platform::GetGroupName(gid); if (cached_group_name) return cached_group_name; std::string name; if (m_gdb_client.GetGroupName(gid, name)) return SetCachedGroupName(gid, name.c_str(), name.size()); SetGroupNameNotFound(gid); // Negative cache so we don't keep sending packets return NULL; } uint32_t PlatformRemoteGDBServer::FindProcesses( const ProcessInstanceInfoMatch &match_info, ProcessInstanceInfoList &process_infos) { return m_gdb_client.FindProcesses(match_info, process_infos); } bool PlatformRemoteGDBServer::GetProcessInfo( lldb::pid_t pid, ProcessInstanceInfo &process_info) { return m_gdb_client.GetProcessInfo(pid, process_info); } Status PlatformRemoteGDBServer::LaunchProcess(ProcessLaunchInfo &launch_info) { Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_PLATFORM)); Status error; if (log) log->Printf("PlatformRemoteGDBServer::%s() called", __FUNCTION__); auto num_file_actions = launch_info.GetNumFileActions(); for (decltype(num_file_actions) i = 0; i < num_file_actions; ++i) { const auto file_action = launch_info.GetFileActionAtIndex(i); if (file_action->GetAction() != FileAction::eFileActionOpen) continue; switch (file_action->GetFD()) { case STDIN_FILENO: m_gdb_client.SetSTDIN(file_action->GetFileSpec()); break; case STDOUT_FILENO: m_gdb_client.SetSTDOUT(file_action->GetFileSpec()); break; case STDERR_FILENO: m_gdb_client.SetSTDERR(file_action->GetFileSpec()); break; } } m_gdb_client.SetDisableASLR( launch_info.GetFlags().Test(eLaunchFlagDisableASLR)); m_gdb_client.SetDetachOnError( launch_info.GetFlags().Test(eLaunchFlagDetachOnError)); FileSpec working_dir = launch_info.GetWorkingDirectory(); if (working_dir) { m_gdb_client.SetWorkingDir(working_dir); } // Send the environment and the program + arguments after we connect const char **envp = launch_info.GetEnvironmentEntries().GetConstArgumentVector(); if (envp) { const char *env_entry; for (int i = 0; (env_entry = envp[i]); ++i) { if (m_gdb_client.SendEnvironmentPacket(env_entry) != 0) break; } } ArchSpec arch_spec = launch_info.GetArchitecture(); const char *arch_triple = arch_spec.GetTriple().str().c_str(); m_gdb_client.SendLaunchArchPacket(arch_triple); if (log) log->Printf( "PlatformRemoteGDBServer::%s() set launch architecture triple to '%s'", __FUNCTION__, arch_triple ? arch_triple : ""); int arg_packet_err; { // Scope for the scoped timeout object process_gdb_remote::GDBRemoteCommunication::ScopedTimeout timeout( m_gdb_client, std::chrono::seconds(5)); arg_packet_err = m_gdb_client.SendArgumentsPacket(launch_info); } if (arg_packet_err == 0) { std::string error_str; if (m_gdb_client.GetLaunchSuccess(error_str)) { const auto pid = m_gdb_client.GetCurrentProcessID(false); if (pid != LLDB_INVALID_PROCESS_ID) { launch_info.SetProcessID(pid); if (log) log->Printf("PlatformRemoteGDBServer::%s() pid %" PRIu64 " launched successfully", __FUNCTION__, pid); } else { if (log) log->Printf("PlatformRemoteGDBServer::%s() launch succeeded but we " "didn't get a valid process id back!", __FUNCTION__); error.SetErrorString("failed to get PID"); } } else { error.SetErrorString(error_str.c_str()); if (log) log->Printf("PlatformRemoteGDBServer::%s() launch failed: %s", __FUNCTION__, error.AsCString()); } } else { error.SetErrorStringWithFormat("'A' packet returned an error: %i", arg_packet_err); } return error; } Status PlatformRemoteGDBServer::KillProcess(const lldb::pid_t pid) { if (!KillSpawnedProcess(pid)) return Status("failed to kill remote spawned process"); return Status(); } lldb::ProcessSP PlatformRemoteGDBServer::DebugProcess( ProcessLaunchInfo &launch_info, Debugger &debugger, Target *target, // Can be NULL, if NULL create a new target, else use // existing one Status &error) { lldb::ProcessSP process_sp; if (IsRemote()) { if (IsConnected()) { lldb::pid_t debugserver_pid = LLDB_INVALID_PROCESS_ID; std::string connect_url; if (!LaunchGDBServer(debugserver_pid, connect_url)) { error.SetErrorStringWithFormat("unable to launch a GDB server on '%s'", GetHostname()); } else { if (target == NULL) { TargetSP new_target_sp; error = debugger.GetTargetList().CreateTarget(debugger, "", "", false, NULL, new_target_sp); target = new_target_sp.get(); } else error.Clear(); if (target && error.Success()) { debugger.GetTargetList().SetSelectedTarget(target); // The darwin always currently uses the GDB remote debugger plug-in // so even when debugging locally we are debugging remotely! process_sp = target->CreateProcess( launch_info.GetListenerForProcess(debugger), "gdb-remote", NULL); if (process_sp) { error = process_sp->ConnectRemote(nullptr, connect_url.c_str()); // Retry the connect remote one time... if (error.Fail()) error = process_sp->ConnectRemote(nullptr, connect_url.c_str()); if (error.Success()) error = process_sp->Launch(launch_info); else if (debugserver_pid != LLDB_INVALID_PROCESS_ID) { printf("error: connect remote failed (%s)\n", error.AsCString()); KillSpawnedProcess(debugserver_pid); } } } } } else { error.SetErrorString("not connected to remote gdb server"); } } return process_sp; } bool PlatformRemoteGDBServer::LaunchGDBServer(lldb::pid_t &pid, std::string &connect_url) { ArchSpec remote_arch = GetRemoteSystemArchitecture(); llvm::Triple &remote_triple = remote_arch.GetTriple(); uint16_t port = 0; std::string socket_name; bool launch_result = false; if (remote_triple.getVendor() == llvm::Triple::Apple && remote_triple.getOS() == llvm::Triple::IOS) { // When remote debugging to iOS, we use a USB mux that always talks // to localhost, so we will need the remote debugserver to accept // connections // only from localhost, no matter what our current hostname is launch_result = m_gdb_client.LaunchGDBServer("127.0.0.1", pid, port, socket_name); } else { // All other hosts should use their actual hostname launch_result = m_gdb_client.LaunchGDBServer(nullptr, pid, port, socket_name); } if (!launch_result) return false; connect_url = MakeGdbServerUrl(m_platform_scheme, m_platform_hostname, port, (socket_name.empty()) ? nullptr : socket_name.c_str()); return true; } bool PlatformRemoteGDBServer::KillSpawnedProcess(lldb::pid_t pid) { return m_gdb_client.KillSpawnedProcess(pid); } lldb::ProcessSP PlatformRemoteGDBServer::Attach( ProcessAttachInfo &attach_info, Debugger &debugger, Target *target, // Can be NULL, if NULL create a new target, else use // existing one Status &error) { lldb::ProcessSP process_sp; if (IsRemote()) { if (IsConnected()) { lldb::pid_t debugserver_pid = LLDB_INVALID_PROCESS_ID; std::string connect_url; if (!LaunchGDBServer(debugserver_pid, connect_url)) { error.SetErrorStringWithFormat("unable to launch a GDB server on '%s'", GetHostname()); } else { if (target == NULL) { TargetSP new_target_sp; error = debugger.GetTargetList().CreateTarget(debugger, "", "", false, NULL, new_target_sp); target = new_target_sp.get(); } else error.Clear(); if (target && error.Success()) { debugger.GetTargetList().SetSelectedTarget(target); // The darwin always currently uses the GDB remote debugger plug-in // so even when debugging locally we are debugging remotely! process_sp = target->CreateProcess( attach_info.GetListenerForProcess(debugger), "gdb-remote", NULL); if (process_sp) { error = process_sp->ConnectRemote(nullptr, connect_url.c_str()); if (error.Success()) { ListenerSP listener_sp = attach_info.GetHijackListener(); if (listener_sp) process_sp->HijackProcessEvents(listener_sp); error = process_sp->Attach(attach_info); } if (error.Fail() && debugserver_pid != LLDB_INVALID_PROCESS_ID) { KillSpawnedProcess(debugserver_pid); } } } } } else { error.SetErrorString("not connected to remote gdb server"); } } return process_sp; } Status PlatformRemoteGDBServer::MakeDirectory(const FileSpec &file_spec, uint32_t mode) { Status error = m_gdb_client.MakeDirectory(file_spec, mode); Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM); if (log) log->Printf("PlatformRemoteGDBServer::MakeDirectory(path='%s', mode=%o) " "error = %u (%s)", file_spec.GetCString(), mode, error.GetError(), error.AsCString()); return error; } Status PlatformRemoteGDBServer::GetFilePermissions(const FileSpec &file_spec, uint32_t &file_permissions) { Status error = m_gdb_client.GetFilePermissions(file_spec, file_permissions); Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM); if (log) log->Printf("PlatformRemoteGDBServer::GetFilePermissions(path='%s', " "file_permissions=%o) error = %u (%s)", file_spec.GetCString(), file_permissions, error.GetError(), error.AsCString()); return error; } Status PlatformRemoteGDBServer::SetFilePermissions(const FileSpec &file_spec, uint32_t file_permissions) { Status error = m_gdb_client.SetFilePermissions(file_spec, file_permissions); Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM); if (log) log->Printf("PlatformRemoteGDBServer::SetFilePermissions(path='%s', " "file_permissions=%o) error = %u (%s)", file_spec.GetCString(), file_permissions, error.GetError(), error.AsCString()); return error; } lldb::user_id_t PlatformRemoteGDBServer::OpenFile(const FileSpec &file_spec, uint32_t flags, uint32_t mode, Status &error) { return m_gdb_client.OpenFile(file_spec, flags, mode, error); } bool PlatformRemoteGDBServer::CloseFile(lldb::user_id_t fd, Status &error) { return m_gdb_client.CloseFile(fd, error); } lldb::user_id_t PlatformRemoteGDBServer::GetFileSize(const FileSpec &file_spec) { return m_gdb_client.GetFileSize(file_spec); } uint64_t PlatformRemoteGDBServer::ReadFile(lldb::user_id_t fd, uint64_t offset, void *dst, uint64_t dst_len, Status &error) { return m_gdb_client.ReadFile(fd, offset, dst, dst_len, error); } uint64_t PlatformRemoteGDBServer::WriteFile(lldb::user_id_t fd, uint64_t offset, const void *src, uint64_t src_len, Status &error) { return m_gdb_client.WriteFile(fd, offset, src, src_len, error); } Status PlatformRemoteGDBServer::PutFile(const FileSpec &source, const FileSpec &destination, uint32_t uid, uint32_t gid) { return Platform::PutFile(source, destination, uid, gid); } Status PlatformRemoteGDBServer::CreateSymlink( const FileSpec &src, // The name of the link is in src const FileSpec &dst) // The symlink points to dst { Status error = m_gdb_client.CreateSymlink(src, dst); Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM); if (log) log->Printf("PlatformRemoteGDBServer::CreateSymlink(src='%s', dst='%s') " "error = %u (%s)", src.GetCString(), dst.GetCString(), error.GetError(), error.AsCString()); return error; } Status PlatformRemoteGDBServer::Unlink(const FileSpec &file_spec) { Status error = m_gdb_client.Unlink(file_spec); Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM); if (log) log->Printf("PlatformRemoteGDBServer::Unlink(path='%s') error = %u (%s)", file_spec.GetCString(), error.GetError(), error.AsCString()); return error; } bool PlatformRemoteGDBServer::GetFileExists(const FileSpec &file_spec) { return m_gdb_client.GetFileExists(file_spec); } Status PlatformRemoteGDBServer::RunShellCommand( const char *command, // Shouldn't be NULL const FileSpec & working_dir, // Pass empty FileSpec to use the current working directory int *status_ptr, // Pass NULL if you don't want the process exit status int *signo_ptr, // Pass NULL if you don't want the signal that caused the // process to exit std::string *command_output, // Pass NULL if you don't want the command output uint32_t timeout_sec) // Timeout in seconds to wait for shell program to finish { return m_gdb_client.RunShellCommand(command, working_dir, status_ptr, signo_ptr, command_output, timeout_sec); } void PlatformRemoteGDBServer::CalculateTrapHandlerSymbolNames() { m_trap_handlers.push_back(ConstString("_sigtramp")); } const UnixSignalsSP &PlatformRemoteGDBServer::GetRemoteUnixSignals() { if (!IsConnected()) return Platform::GetRemoteUnixSignals(); if (m_remote_signals_sp) return m_remote_signals_sp; // If packet not implemented or JSON failed to parse, // we'll guess the signal set based on the remote architecture. m_remote_signals_sp = UnixSignals::Create(GetRemoteSystemArchitecture()); StringExtractorGDBRemote response; auto result = m_gdb_client.SendPacketAndWaitForResponse("jSignalsInfo", response, false); if (result != decltype(result)::Success || response.GetResponseType() != response.eResponse) return m_remote_signals_sp; auto object_sp = StructuredData::ParseJSON(response.GetStringRef()); if (!object_sp || !object_sp->IsValid()) return m_remote_signals_sp; auto array_sp = object_sp->GetAsArray(); if (!array_sp || !array_sp->IsValid()) return m_remote_signals_sp; auto remote_signals_sp = std::make_shared(); bool done = array_sp->ForEach( [&remote_signals_sp](StructuredData::Object *object) -> bool { if (!object || !object->IsValid()) return false; auto dict = object->GetAsDictionary(); if (!dict || !dict->IsValid()) return false; // Signal number and signal name are required. int signo; if (!dict->GetValueForKeyAsInteger("signo", signo)) return false; llvm::StringRef name; if (!dict->GetValueForKeyAsString("name", name)) return false; // We can live without short_name, description, etc. bool suppress{false}; auto object_sp = dict->GetValueForKey("suppress"); if (object_sp && object_sp->IsValid()) suppress = object_sp->GetBooleanValue(); bool stop{false}; object_sp = dict->GetValueForKey("stop"); if (object_sp && object_sp->IsValid()) stop = object_sp->GetBooleanValue(); bool notify{false}; object_sp = dict->GetValueForKey("notify"); if (object_sp && object_sp->IsValid()) notify = object_sp->GetBooleanValue(); std::string description{""}; object_sp = dict->GetValueForKey("description"); if (object_sp && object_sp->IsValid()) description = object_sp->GetStringValue(); remote_signals_sp->AddSignal(signo, name.str().c_str(), suppress, stop, notify, description.c_str()); return true; }); if (done) m_remote_signals_sp = std::move(remote_signals_sp); return m_remote_signals_sp; } std::string PlatformRemoteGDBServer::MakeGdbServerUrl( const std::string &platform_scheme, const std::string &platform_hostname, uint16_t port, const char *socket_name) { const char *override_scheme = getenv("LLDB_PLATFORM_REMOTE_GDB_SERVER_SCHEME"); const char *override_hostname = getenv("LLDB_PLATFORM_REMOTE_GDB_SERVER_HOSTNAME"); const char *port_offset_c_str = getenv("LLDB_PLATFORM_REMOTE_GDB_SERVER_PORT_OFFSET"); int port_offset = port_offset_c_str ? ::atoi(port_offset_c_str) : 0; return MakeUrl(override_scheme ? override_scheme : platform_scheme.c_str(), override_hostname ? override_hostname : platform_hostname.c_str(), port + port_offset, socket_name); } std::string PlatformRemoteGDBServer::MakeUrl(const char *scheme, const char *hostname, uint16_t port, const char *path) { StreamString result; result.Printf("%s://%s", scheme, hostname); if (port != 0) result.Printf(":%u", port); if (path) result.Write(path, strlen(path)); return result.GetString(); } lldb::ProcessSP PlatformRemoteGDBServer::ConnectProcess( llvm::StringRef connect_url, llvm::StringRef plugin_name, lldb_private::Debugger &debugger, lldb_private::Target *target, lldb_private::Status &error) { if (!IsRemote() || !IsConnected()) { error.SetErrorString("Not connected to remote gdb server"); return nullptr; } return Platform::ConnectProcess(connect_url, plugin_name, debugger, target, error); } size_t PlatformRemoteGDBServer::ConnectToWaitingProcesses(Debugger &debugger, Status &error) { std::vector connection_urls; GetPendingGdbServerList(connection_urls); for (size_t i = 0; i < connection_urls.size(); ++i) { ConnectProcess(connection_urls[i].c_str(), "", debugger, nullptr, error); if (error.Fail()) return i; // We already connected to i process succsessfully } return connection_urls.size(); } size_t PlatformRemoteGDBServer::GetPendingGdbServerList( std::vector &connection_urls) { std::vector> remote_servers; m_gdb_client.QueryGDBServer(remote_servers); for (const auto &gdbserver : remote_servers) { const char *socket_name_cstr = gdbserver.second.empty() ? nullptr : gdbserver.second.c_str(); connection_urls.emplace_back( MakeGdbServerUrl(m_platform_scheme, m_platform_hostname, gdbserver.first, socket_name_cstr)); } return connection_urls.size(); }