PlatformRemoteGDBServer.h

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//===-- PlatformRemoteGDBServer.h ----------------------------------------*- C++
//-*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
 
#ifndef LLDB_SOURCE_PLUGINS_PLATFORM_GDB_SERVER_PLATFORMREMOTEGDBSERVER_H
#define LLDB_SOURCE_PLUGINS_PLATFORM_GDB_SERVER_PLATFORMREMOTEGDBSERVER_H
 
#include <optional>
#include <string>
 
#include "Plugins/Process/Utility/GDBRemoteSignals.h"
#include "Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.h"
#include "lldb/Target/Platform.h"
 
namespace lldb_private {
namespace platform_gdb_server {
 
class PlatformRemoteGDBServer : public Platform, private UserIDResolver {
public:
  static void Initialize();
 
  static void Terminate();
 
  static lldb::PlatformSP CreateInstance(bool force, const ArchSpec *arch);
 
  static llvm::StringRef GetPluginNameStatic() { return "remote-gdb-server"; }
 
  static llvm::StringRef GetDescriptionStatic();
 
  PlatformRemoteGDBServer();
 
  ~PlatformRemoteGDBServer() override;
 
  // lldb_private::PluginInterface functions
  llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
 
  // lldb_private::Platform functions
  bool GetModuleSpec(const FileSpec &module_file_spec, const ArchSpec &arch,
                     ModuleSpec &module_spec) override;
 
  llvm::StringRef GetDescription() override;
 
  Status GetFileWithUUID(const FileSpec &platform_file, const UUID *uuid_ptr,
                         FileSpec &local_file) override;
 
  bool GetProcessInfo(lldb::pid_t pid, ProcessInstanceInfo &proc_info) override;
 
  uint32_t FindProcesses(const ProcessInstanceInfoMatch &match_info,
                         ProcessInstanceInfoList &process_infos) override;
 
  Status LaunchProcess(ProcessLaunchInfo &launch_info) override;
 
  Status KillProcess(const lldb::pid_t pid) override;
 
  lldb::ProcessSP DebugProcess(ProcessLaunchInfo &launch_info,
                               Debugger &debugger, Target &target,
                               Status &error) override;
 
  lldb::ProcessSP Attach(ProcessAttachInfo &attach_info, Debugger &debugger,
                         Target *target, // Can be NULL, if NULL create a new
                                         // target, else use existing one
                         Status &error) override;
 
  std::vector<ArchSpec>
  GetSupportedArchitectures(const ArchSpec &process_host_arch) override {
    return m_supported_architectures;
  }
 
  size_t GetSoftwareBreakpointTrapOpcode(Target &target,
                                         BreakpointSite *bp_site) override;
 
  bool GetRemoteOSVersion() override;
 
  std::optional<std::string> GetRemoteOSBuildString() override;
 
  std::optional<std::string> GetRemoteOSKernelDescription() override;
 
  // Remote Platform subclasses need to override this function
  ArchSpec GetRemoteSystemArchitecture() override;
 
  FileSpec GetRemoteWorkingDirectory() override;
 
  bool SetRemoteWorkingDirectory(const FileSpec &working_dir) override;
 
  // Remote subclasses should override this and return a valid instance
  // name if connected.
  const char *GetHostname() override;
 
  UserIDResolver &GetUserIDResolver() override { return *this; }
 
  bool IsConnected() const override;
 
  Status ConnectRemote(Args &args) override;
 
  Status DisconnectRemote() override;
 
  Status MakeDirectory(const FileSpec &file_spec,
                       uint32_t file_permissions) override;
 
  Status GetFilePermissions(const FileSpec &file_spec,
                            uint32_t &file_permissions) override;
 
  Status SetFilePermissions(const FileSpec &file_spec,
                            uint32_t file_permissions) override;
 
  lldb::user_id_t OpenFile(const FileSpec &file_spec, File::OpenOptions flags,
                           uint32_t mode, Status &error) override;
 
  bool CloseFile(lldb::user_id_t fd, Status &error) override;
 
  uint64_t ReadFile(lldb::user_id_t fd, uint64_t offset, void *data_ptr,
                    uint64_t len, Status &error) override;
 
  uint64_t WriteFile(lldb::user_id_t fd, uint64_t offset, const void *data,
                     uint64_t len, Status &error) override;
 
  lldb::user_id_t GetFileSize(const FileSpec &file_spec) override;
 
  void AutoCompleteDiskFileOrDirectory(CompletionRequest &request,
                                       bool only_dir) override;
 
  Status PutFile(const FileSpec &source, const FileSpec &destination,
                 uint32_t uid = UINT32_MAX, uint32_t gid = UINT32_MAX) override;
 
  Status CreateSymlink(const FileSpec &src, const FileSpec &dst) override;
 
  bool GetFileExists(const FileSpec &file_spec) override;
 
  Status Unlink(const FileSpec &path) override;
 
  Status RunShellCommand(
      llvm::StringRef shell, llvm::StringRef command,
      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
      const lldb_private::Timeout<std::micro> &timeout) override;
 
  void CalculateTrapHandlerSymbolNames() override;
 
  llvm::ErrorOr<llvm::MD5::MD5Result>
  CalculateMD5(const FileSpec &file_spec) override;
 
  const lldb::UnixSignalsSP &GetRemoteUnixSignals() override;
 
  size_t ConnectToWaitingProcesses(lldb_private::Debugger &debugger,
                                   lldb_private::Status &error) override;
 
  virtual size_t
  GetPendingGdbServerList(std::vector<std::string> &connection_urls);
 
protected:
  std::unique_ptr<process_gdb_remote::GDBRemoteCommunicationClient>
      m_gdb_client_up;
  std::string m_platform_description; // After we connect we can get a more
                                      // complete description of what we are
                                      // connected to
  std::string m_platform_scheme;
  std::string m_platform_hostname;
 
  lldb::UnixSignalsSP m_remote_signals_sp;
 
  // Launch the debug server on the remote host - caller connects to launched
  // debug server using connect_url.
  // Subclasses should override this method if they want to do extra actions
  // before or
  // after launching the debug server.
  virtual bool LaunchGDBServer(lldb::pid_t &pid, std::string &connect_url);
 
  virtual bool KillSpawnedProcess(lldb::pid_t pid);
 
  virtual std::string MakeUrl(const char *scheme, const char *hostname,
                              uint16_t port, const char *path);
 
private:
  std::string MakeGdbServerUrl(const std::string &platform_scheme,
                               const std::string &platform_hostname,
                               uint16_t port, const char *socket_name);
 
  std::optional<std::string> DoGetUserName(UserIDResolver::id_t uid) override;
  std::optional<std::string> DoGetGroupName(UserIDResolver::id_t uid) override;
 
  std::vector<ArchSpec> m_supported_architectures;
 
  PlatformRemoteGDBServer(const PlatformRemoteGDBServer &) = delete;
  const PlatformRemoteGDBServer &
  operator=(const PlatformRemoteGDBServer &) = delete;
};
 
} // namespace platform_gdb_server
} // namespace lldb_private
 
#endif // LLDB_SOURCE_PLUGINS_PLATFORM_GDB_SERVER_PLATFORMREMOTEGDBSERVER_H