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
GDBRemoteCommunicationServer::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 = packet.GetHexMaxU32(false, 0);
if (packet.GetChar() == ',')
{
mode_t mode = packet.GetHexMaxU32(false, 0600);
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);
return SendPacketNoLock(response.GetData(), response.GetSize());
}
}
}
return SendErrorResponse(18);
}
char
GDBRemoteCommunication::GetAck ()
{
StringExtractorGDBRemote packet;
if (WaitForPacketWithTimeoutMicroSecondsNoLock (packet, GetPacketTimeoutInMicroSeconds ()) == 1)
return packet.GetChar();
return 0;
}
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
GDBRemoteCommunicationServer::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(),
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());
}
return SendPacketNoLock(response.GetData(), response.GetSize());
}
}
return SendErrorResponse(24);
}
GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServer::Handle_vFile_pRead (StringExtractorGDBRemote &packet)
{
#ifdef _WIN32
// Not implemented on Windows
return SendUnimplementedResponse("GDBRemoteCommunicationServer::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
GDBRemoteCommunicationServer::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 = Host::Symlink(src.c_str(), dst.c_str());
StreamString response;
response.Printf("F%u,%u", error.GetError(), error.GetError());
return SendPacketNoLock(response.GetData(), response.GetSize());
}
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.GetString());
}
GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServer::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 = Host::MakeDirectory(path.c_str(),mode);
if (error.Success())
return SendPacketNoLock ("OK", 2);
else
return SendErrorResponse(error.GetError());
}
return SendErrorResponse(20);
}
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_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
GDBRemoteCommunicationServer::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...
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 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);
}
GDBRemoteCommunication::PacketResult
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);
}
StateType GDBRemoteClientBase::SendContinuePacketAndWaitForResponse(
ContinueDelegate &delegate, const UnixSignals &signals,
llvm::StringRef payload, StringExtractorGDBRemote &response) {
Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS));
response.Clear();
{
std::lock_guard<std::mutex> lock(m_mutex);
m_continue_packet = payload;
m_should_stop = false;
}
ContinueLock cont_lock(*this);
if (!cont_lock)
return eStateInvalid;
OnRunPacketSent(true);
for (;;) {
PacketResult read_result = ReadPacket(response, kInterruptTimeout, false);
switch (read_result) {
case PacketResult::ErrorReplyTimeout: {
std::lock_guard<std::mutex> lock(m_mutex);
if (m_async_count == 0)
continue;
if (steady_clock::now() >= m_interrupt_time + kInterruptTimeout)
return eStateInvalid;
}
case PacketResult::Success:
break;
default:
if (log)
log->Printf("GDBRemoteClientBase::%s () ReadPacket(...) => false",
__FUNCTION__);
return eStateInvalid;
}
if (response.Empty())
return eStateInvalid;
const char stop_type = response.GetChar();
if (log)
log->Printf("GDBRemoteClientBase::%s () got packet: %s", __FUNCTION__,
response.GetStringRef().c_str());
switch (stop_type) {
case 'W':
case 'X':
return eStateExited;
case 'E':
// ERROR
return eStateInvalid;
default:
if (log)
log->Printf("GDBRemoteClientBase::%s () unrecognized async packet",
__FUNCTION__);
return eStateInvalid;
case 'O': {
std::string inferior_stdout;
response.GetHexByteString(inferior_stdout);
delegate.HandleAsyncStdout(inferior_stdout);
break;
}
case 'A':
delegate.HandleAsyncMisc(
llvm::StringRef(response.GetStringRef()).substr(1));
break;
case 'J':
delegate.HandleAsyncStructuredDataPacket(response.GetStringRef());
break;
case 'T':
case 'S':
// Do this with the continue lock held.
const bool should_stop = ShouldStop(signals, response);
response.SetFilePos(0);
// The packet we should resume with. In the future
// we should check our thread list and "do the right thing"
// for new threads that show up while we stop and run async
// packets. Setting the packet to 'c' to continue all threads
// is the right thing to do 99.99% of the time because if a
// thread was single stepping, and we sent an interrupt, we
// will notice above that we didn't stop due to an interrupt
// but stopped due to stepping and we would _not_ continue.
// This packet may get modified by the async actions (e.g. to send a
// signal).
m_continue_packet = 'c';
cont_lock.unlock();
delegate.HandleStopReply();
if (should_stop)
return eStateStopped;
switch (cont_lock.lock()) {
case ContinueLock::LockResult::Success:
break;
case ContinueLock::LockResult::Failed:
return eStateInvalid;
case ContinueLock::LockResult::Cancelled:
return eStateStopped;
}
OnRunPacketSent(false);
break;
}
}
}
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);
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_qfProcessInfo(
StringExtractorGDBRemote &packet) {
m_proc_infos_index = 0;
m_proc_infos.Clear();
ProcessInstanceInfoMatch match_info;
packet.SetFilePos(::strlen("qfProcessInfo"));
if (packet.GetChar() == ':') {
llvm::StringRef key;
llvm::StringRef value;
while (packet.GetNameColonValue(key, value)) {
bool success = true;
if (key.equals("name")) {
StringExtractor extractor(value);
std::string file;
extractor.GetHexByteString(file);
match_info.GetProcessInfo().GetExecutableFile().SetFile(file.c_str(),
false);
} else if (key.equals("name_match")) {
NameMatchType name_match =
llvm::StringSwitch<NameMatchType>(value)
.Case("equals", eNameMatchEquals)
.Case("starts_with", eNameMatchStartsWith)
.Case("ends_with", eNameMatchEndsWith)
.Case("contains", eNameMatchContains)
.Case("regex", eNameMatchRegularExpression)
.Default(eNameMatchIgnore);
match_info.SetNameMatchType(name_match);
if (name_match == eNameMatchIgnore)
return SendErrorResponse(2);
} else if (key.equals("pid")) {
lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
if (value.getAsInteger(0, pid))
return SendErrorResponse(2);
match_info.GetProcessInfo().SetProcessID(pid);
} else if (key.equals("parent_pid")) {
lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
if (value.getAsInteger(0, pid))
return SendErrorResponse(2);
match_info.GetProcessInfo().SetParentProcessID(pid);
} else if (key.equals("uid")) {
uint32_t uid = UINT32_MAX;
if (value.getAsInteger(0, uid))
return SendErrorResponse(2);
match_info.GetProcessInfo().SetUserID(uid);
} else if (key.equals("gid")) {
uint32_t gid = UINT32_MAX;
if (value.getAsInteger(0, gid))
return SendErrorResponse(2);
match_info.GetProcessInfo().SetGroupID(gid);
} else if (key.equals("euid")) {
uint32_t uid = UINT32_MAX;
if (value.getAsInteger(0, uid))
return SendErrorResponse(2);
match_info.GetProcessInfo().SetEffectiveUserID(uid);
} else if (key.equals("egid")) {
uint32_t gid = UINT32_MAX;
if (value.getAsInteger(0, gid))
return SendErrorResponse(2);
match_info.GetProcessInfo().SetEffectiveGroupID(gid);
} else if (key.equals("all_users")) {
match_info.SetMatchAllUsers(
Args::StringToBoolean(value, false, &success));
} else if (key.equals("triple")) {
match_info.GetProcessInfo().GetArchitecture().SetTriple(
value.str().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);
}
