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.GetString());
}
}
return SendErrorResponse(27);
#endif
}
GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServerPlatform::Handle_qQueryGDBServer(
StringExtractorGDBRemote &packet) {
if (m_pending_gdb_server.pid == LLDB_INVALID_PROCESS_ID)
return SendErrorResponse(4);
JSONObject::SP server_sp = std::make_shared<JSONObject>();
server_sp->SetObject("port",
std::make_shared<JSONNumber>(m_pending_gdb_server.port));
if (!m_pending_gdb_server.socket_name.empty())
server_sp->SetObject(
"socket_name",
std::make_shared<JSONString>(m_pending_gdb_server.socket_name.c_str()));
JSONArray server_list;
server_list.AppendObject(server_sp);
StreamGDBRemote response;
server_list.Write(response);
StreamGDBRemote escaped_response;
escaped_response.PutEscapedBytes(response.GetString().data(),
response.GetSize());
return SendPacketNoLock(escaped_response.GetString());
}
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);
ModuleSpec matched_module_spec = GetModuleInfo(module_path, triple);
if (!matched_module_spec.GetFileSpec())
return SendErrorResponse(3);
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(matched_module_spec.GetFileSpec().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.GetString());
}
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.GetString());
}
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.GetString());
}
}
return SendErrorResponse(21);
#endif
}
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.GetString());
}
return SendErrorResponse(20);
}
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.GetString());
}
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.GetString());
}
return SendErrorResponse(25);
}
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.GetString());
}
}
return SendErrorResponse(24);
}
GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServerPlatform::Handle_qLaunchGDBServer(
StringExtractorGDBRemote &packet) {
#ifdef _WIN32
return SendErrorResponse(9);
#else
// Spawn a local debugserver as a platform so we can then attach or launch
// a process...
Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM));
if (log)
log->Printf("GDBRemoteCommunicationServerPlatform::%s() called",
__FUNCTION__);
ConnectionFileDescriptor file_conn;
std::string hostname;
packet.SetFilePos(::strlen("qLaunchGDBServer;"));
llvm::StringRef name;
llvm::StringRef value;
uint16_t port = UINT16_MAX;
while (packet.GetNameColonValue(name, value)) {
if (name.equals("host"))
hostname = value;
else if (name.equals("port"))
value.getAsInteger(0, port);
}
lldb::pid_t debugserver_pid = LLDB_INVALID_PROCESS_ID;
std::string socket_name;
Status error =
LaunchGDBServer(Args(), hostname, debugserver_pid, port, socket_name);
if (error.Fail()) {
if (log)
log->Printf("GDBRemoteCommunicationServerPlatform::%s() debugserver "
"launch failed: %s",
__FUNCTION__, error.AsCString());
return SendErrorResponse(9);
}
if (log)
log->Printf("GDBRemoteCommunicationServerPlatform::%s() debugserver "
"launched successfully as pid %" PRIu64,
__FUNCTION__, debugserver_pid);
StreamGDBRemote response;
response.Printf("pid:%" PRIu64 ";port:%u;", debugserver_pid,
port + m_port_offset);
if (!socket_name.empty()) {
response.PutCString("socket_name:");
response.PutCStringAsRawHex8(socket_name.c_str());
response.PutChar(';');
}
PacketResult packet_result = SendPacketNoLock(response.GetString());
if (packet_result != PacketResult::Success) {
if (debugserver_pid != LLDB_INVALID_PROCESS_ID)
::kill(debugserver_pid, SIGINT);
}
return packet_result;
#endif
}
