1 //===-- GDBRemoteCommunicationServerCommon.cpp ------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "GDBRemoteCommunicationServerCommon.h"
11 
12 #include <errno.h>
13 
14 // C Includes
15 
16 #ifdef __APPLE__
17 #include <TargetConditionals.h>
18 #endif
19 
20 // C++ Includes
21 #include <chrono>
22 #include <cstring>
23 
24 // Other libraries and framework includes
25 #include "lldb/Core/ModuleSpec.h"
26 #include "lldb/Host/Config.h"
27 #include "lldb/Host/File.h"
28 #include "lldb/Host/FileSystem.h"
29 #include "lldb/Host/Host.h"
30 #include "lldb/Host/HostInfo.h"
31 #include "lldb/Host/SafeMachO.h"
32 #include "lldb/Interpreter/OptionArgParser.h"
33 #include "lldb/Symbol/ObjectFile.h"
34 #include "lldb/Target/FileAction.h"
35 #include "lldb/Target/Platform.h"
36 #include "lldb/Target/Process.h"
37 #include "lldb/Utility/Endian.h"
38 #include "lldb/Utility/JSON.h"
39 #include "lldb/Utility/Log.h"
40 #include "lldb/Utility/StreamGDBRemote.h"
41 #include "lldb/Utility/StreamString.h"
42 #include "llvm/ADT/Triple.h"
43 
44 // Project includes
45 #include "ProcessGDBRemoteLog.h"
46 #include "lldb/Utility/StringExtractorGDBRemote.h"
47 
48 #ifdef __ANDROID__
49 #include "lldb/Host/android/HostInfoAndroid.h"
50 #endif
51 
52 #include "llvm/ADT/StringSwitch.h"
53 
54 using namespace lldb;
55 using namespace lldb_private;
56 using namespace lldb_private::process_gdb_remote;
57 
58 #ifdef __ANDROID__
59 const static uint32_t g_default_packet_timeout_sec = 20; // seconds
60 #else
61 const static uint32_t g_default_packet_timeout_sec = 0; // not specified
62 #endif
63 
64 //----------------------------------------------------------------------
65 // GDBRemoteCommunicationServerCommon constructor
66 //----------------------------------------------------------------------
67 GDBRemoteCommunicationServerCommon::GDBRemoteCommunicationServerCommon(
68     const char *comm_name, const char *listener_name)
69     : GDBRemoteCommunicationServer(comm_name, listener_name),
70       m_process_launch_info(), m_process_launch_error(), m_proc_infos(),
71       m_proc_infos_index(0), m_thread_suffix_supported(false),
72       m_list_threads_in_stop_reply(false) {
73   RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_A,
74                                 &GDBRemoteCommunicationServerCommon::Handle_A);
75   RegisterMemberFunctionHandler(
76       StringExtractorGDBRemote::eServerPacketType_QEnvironment,
77       &GDBRemoteCommunicationServerCommon::Handle_QEnvironment);
78   RegisterMemberFunctionHandler(
79       StringExtractorGDBRemote::eServerPacketType_QEnvironmentHexEncoded,
80       &GDBRemoteCommunicationServerCommon::Handle_QEnvironmentHexEncoded);
81   RegisterMemberFunctionHandler(
82       StringExtractorGDBRemote::eServerPacketType_qfProcessInfo,
83       &GDBRemoteCommunicationServerCommon::Handle_qfProcessInfo);
84   RegisterMemberFunctionHandler(
85       StringExtractorGDBRemote::eServerPacketType_qGroupName,
86       &GDBRemoteCommunicationServerCommon::Handle_qGroupName);
87   RegisterMemberFunctionHandler(
88       StringExtractorGDBRemote::eServerPacketType_qHostInfo,
89       &GDBRemoteCommunicationServerCommon::Handle_qHostInfo);
90   RegisterMemberFunctionHandler(
91       StringExtractorGDBRemote::eServerPacketType_QLaunchArch,
92       &GDBRemoteCommunicationServerCommon::Handle_QLaunchArch);
93   RegisterMemberFunctionHandler(
94       StringExtractorGDBRemote::eServerPacketType_qLaunchSuccess,
95       &GDBRemoteCommunicationServerCommon::Handle_qLaunchSuccess);
96   RegisterMemberFunctionHandler(
97       StringExtractorGDBRemote::eServerPacketType_QListThreadsInStopReply,
98       &GDBRemoteCommunicationServerCommon::Handle_QListThreadsInStopReply);
99   RegisterMemberFunctionHandler(
100       StringExtractorGDBRemote::eServerPacketType_qEcho,
101       &GDBRemoteCommunicationServerCommon::Handle_qEcho);
102   RegisterMemberFunctionHandler(
103       StringExtractorGDBRemote::eServerPacketType_qModuleInfo,
104       &GDBRemoteCommunicationServerCommon::Handle_qModuleInfo);
105   RegisterMemberFunctionHandler(
106       StringExtractorGDBRemote::eServerPacketType_jModulesInfo,
107       &GDBRemoteCommunicationServerCommon::Handle_jModulesInfo);
108   RegisterMemberFunctionHandler(
109       StringExtractorGDBRemote::eServerPacketType_qPlatform_chmod,
110       &GDBRemoteCommunicationServerCommon::Handle_qPlatform_chmod);
111   RegisterMemberFunctionHandler(
112       StringExtractorGDBRemote::eServerPacketType_qPlatform_mkdir,
113       &GDBRemoteCommunicationServerCommon::Handle_qPlatform_mkdir);
114   RegisterMemberFunctionHandler(
115       StringExtractorGDBRemote::eServerPacketType_qPlatform_shell,
116       &GDBRemoteCommunicationServerCommon::Handle_qPlatform_shell);
117   RegisterMemberFunctionHandler(
118       StringExtractorGDBRemote::eServerPacketType_qProcessInfoPID,
119       &GDBRemoteCommunicationServerCommon::Handle_qProcessInfoPID);
120   RegisterMemberFunctionHandler(
121       StringExtractorGDBRemote::eServerPacketType_QSetDetachOnError,
122       &GDBRemoteCommunicationServerCommon::Handle_QSetDetachOnError);
123   RegisterMemberFunctionHandler(
124       StringExtractorGDBRemote::eServerPacketType_QSetSTDERR,
125       &GDBRemoteCommunicationServerCommon::Handle_QSetSTDERR);
126   RegisterMemberFunctionHandler(
127       StringExtractorGDBRemote::eServerPacketType_QSetSTDIN,
128       &GDBRemoteCommunicationServerCommon::Handle_QSetSTDIN);
129   RegisterMemberFunctionHandler(
130       StringExtractorGDBRemote::eServerPacketType_QSetSTDOUT,
131       &GDBRemoteCommunicationServerCommon::Handle_QSetSTDOUT);
132   RegisterMemberFunctionHandler(
133       StringExtractorGDBRemote::eServerPacketType_qSpeedTest,
134       &GDBRemoteCommunicationServerCommon::Handle_qSpeedTest);
135   RegisterMemberFunctionHandler(
136       StringExtractorGDBRemote::eServerPacketType_qsProcessInfo,
137       &GDBRemoteCommunicationServerCommon::Handle_qsProcessInfo);
138   RegisterMemberFunctionHandler(
139       StringExtractorGDBRemote::eServerPacketType_QStartNoAckMode,
140       &GDBRemoteCommunicationServerCommon::Handle_QStartNoAckMode);
141   RegisterMemberFunctionHandler(
142       StringExtractorGDBRemote::eServerPacketType_qSupported,
143       &GDBRemoteCommunicationServerCommon::Handle_qSupported);
144   RegisterMemberFunctionHandler(
145       StringExtractorGDBRemote::eServerPacketType_QThreadSuffixSupported,
146       &GDBRemoteCommunicationServerCommon::Handle_QThreadSuffixSupported);
147   RegisterMemberFunctionHandler(
148       StringExtractorGDBRemote::eServerPacketType_qUserName,
149       &GDBRemoteCommunicationServerCommon::Handle_qUserName);
150   RegisterMemberFunctionHandler(
151       StringExtractorGDBRemote::eServerPacketType_vFile_close,
152       &GDBRemoteCommunicationServerCommon::Handle_vFile_Close);
153   RegisterMemberFunctionHandler(
154       StringExtractorGDBRemote::eServerPacketType_vFile_exists,
155       &GDBRemoteCommunicationServerCommon::Handle_vFile_Exists);
156   RegisterMemberFunctionHandler(
157       StringExtractorGDBRemote::eServerPacketType_vFile_md5,
158       &GDBRemoteCommunicationServerCommon::Handle_vFile_MD5);
159   RegisterMemberFunctionHandler(
160       StringExtractorGDBRemote::eServerPacketType_vFile_mode,
161       &GDBRemoteCommunicationServerCommon::Handle_vFile_Mode);
162   RegisterMemberFunctionHandler(
163       StringExtractorGDBRemote::eServerPacketType_vFile_open,
164       &GDBRemoteCommunicationServerCommon::Handle_vFile_Open);
165   RegisterMemberFunctionHandler(
166       StringExtractorGDBRemote::eServerPacketType_vFile_pread,
167       &GDBRemoteCommunicationServerCommon::Handle_vFile_pRead);
168   RegisterMemberFunctionHandler(
169       StringExtractorGDBRemote::eServerPacketType_vFile_pwrite,
170       &GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite);
171   RegisterMemberFunctionHandler(
172       StringExtractorGDBRemote::eServerPacketType_vFile_size,
173       &GDBRemoteCommunicationServerCommon::Handle_vFile_Size);
174   RegisterMemberFunctionHandler(
175       StringExtractorGDBRemote::eServerPacketType_vFile_stat,
176       &GDBRemoteCommunicationServerCommon::Handle_vFile_Stat);
177   RegisterMemberFunctionHandler(
178       StringExtractorGDBRemote::eServerPacketType_vFile_symlink,
179       &GDBRemoteCommunicationServerCommon::Handle_vFile_symlink);
180   RegisterMemberFunctionHandler(
181       StringExtractorGDBRemote::eServerPacketType_vFile_unlink,
182       &GDBRemoteCommunicationServerCommon::Handle_vFile_unlink);
183 }
184 
185 //----------------------------------------------------------------------
186 // Destructor
187 //----------------------------------------------------------------------
188 GDBRemoteCommunicationServerCommon::~GDBRemoteCommunicationServerCommon() {}
189 
190 GDBRemoteCommunication::PacketResult
191 GDBRemoteCommunicationServerCommon::Handle_qHostInfo(
192     StringExtractorGDBRemote &packet) {
193   StreamString response;
194 
195   // $cputype:16777223;cpusubtype:3;ostype:Darwin;vendor:apple;endian:little;ptrsize:8;#00
196 
197   ArchSpec host_arch(HostInfo::GetArchitecture());
198   const llvm::Triple &host_triple = host_arch.GetTriple();
199   response.PutCString("triple:");
200   response.PutCStringAsRawHex8(host_triple.getTriple().c_str());
201   response.Printf(";ptrsize:%u;", host_arch.GetAddressByteSize());
202 
203   const char *distribution_id = host_arch.GetDistributionId().AsCString();
204   if (distribution_id) {
205     response.PutCString("distribution_id:");
206     response.PutCStringAsRawHex8(distribution_id);
207     response.PutCString(";");
208   }
209 
210 #if defined(__APPLE__)
211   // For parity with debugserver, we'll include the vendor key.
212   response.PutCString("vendor:apple;");
213 
214   // Send out MachO info.
215   uint32_t cpu = host_arch.GetMachOCPUType();
216   uint32_t sub = host_arch.GetMachOCPUSubType();
217   if (cpu != LLDB_INVALID_CPUTYPE)
218     response.Printf("cputype:%u;", cpu);
219   if (sub != LLDB_INVALID_CPUTYPE)
220     response.Printf("cpusubtype:%u;", sub);
221 
222   if (cpu == llvm::MachO::CPU_TYPE_ARM
223       || cpu == llvm::MachO::CPU_TYPE_ARM64) {
224 // Indicate the OS type.
225 #if defined(TARGET_OS_TV) && TARGET_OS_TV == 1
226     response.PutCString("ostype:tvos;");
227 #elif defined(TARGET_OS_WATCH) && TARGET_OS_WATCH == 1
228     response.PutCString("ostype:watchos;");
229 #elif defined(TARGET_OS_BRIDGE) && TARGET_OS_BRIDGE == 1
230     response.PutCString("ostype:bridgeos;");
231 #else
232     response.PutCString("ostype:ios;");
233 #endif
234 
235     // On arm, we use "synchronous" watchpoints which means the exception is
236     // delivered before the instruction executes.
237     response.PutCString("watchpoint_exceptions_received:before;");
238   } else {
239     response.PutCString("ostype:macosx;");
240     response.Printf("watchpoint_exceptions_received:after;");
241   }
242 
243 #else
244   if (host_arch.GetMachine() == llvm::Triple::aarch64 ||
245       host_arch.GetMachine() == llvm::Triple::aarch64_be ||
246       host_arch.GetMachine() == llvm::Triple::arm ||
247       host_arch.GetMachine() == llvm::Triple::armeb ||
248       host_arch.GetMachine() == llvm::Triple::mips64 ||
249       host_arch.GetMachine() == llvm::Triple::mips64el ||
250       host_arch.GetMachine() == llvm::Triple::mips ||
251       host_arch.GetMachine() == llvm::Triple::mipsel)
252     response.Printf("watchpoint_exceptions_received:before;");
253   else
254     response.Printf("watchpoint_exceptions_received:after;");
255 #endif
256 
257   switch (endian::InlHostByteOrder()) {
258   case eByteOrderBig:
259     response.PutCString("endian:big;");
260     break;
261   case eByteOrderLittle:
262     response.PutCString("endian:little;");
263     break;
264   case eByteOrderPDP:
265     response.PutCString("endian:pdp;");
266     break;
267   default:
268     response.PutCString("endian:unknown;");
269     break;
270   }
271 
272   llvm::VersionTuple version = HostInfo::GetOSVersion();
273   if (!version.empty()) {
274     response.Format("os_version:{0}", version.getAsString());
275     response.PutChar(';');
276   }
277 
278   std::string s;
279   if (HostInfo::GetOSBuildString(s)) {
280     response.PutCString("os_build:");
281     response.PutCStringAsRawHex8(s.c_str());
282     response.PutChar(';');
283   }
284   if (HostInfo::GetOSKernelDescription(s)) {
285     response.PutCString("os_kernel:");
286     response.PutCStringAsRawHex8(s.c_str());
287     response.PutChar(';');
288   }
289 
290 #if defined(__APPLE__)
291 
292 #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
293   // For iOS devices, we are connected through a USB Mux so we never pretend to
294   // actually have a hostname as far as the remote lldb that is connecting to
295   // this lldb-platform is concerned
296   response.PutCString("hostname:");
297   response.PutCStringAsRawHex8("127.0.0.1");
298   response.PutChar(';');
299 #else  // #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
300   if (HostInfo::GetHostname(s)) {
301     response.PutCString("hostname:");
302     response.PutCStringAsRawHex8(s.c_str());
303     response.PutChar(';');
304   }
305 #endif // #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
306 
307 #else  // #if defined(__APPLE__)
308   if (HostInfo::GetHostname(s)) {
309     response.PutCString("hostname:");
310     response.PutCStringAsRawHex8(s.c_str());
311     response.PutChar(';');
312   }
313 #endif // #if defined(__APPLE__)
314 
315   if (g_default_packet_timeout_sec > 0)
316     response.Printf("default_packet_timeout:%u;", g_default_packet_timeout_sec);
317 
318   return SendPacketNoLock(response.GetString());
319 }
320 
321 GDBRemoteCommunication::PacketResult
322 GDBRemoteCommunicationServerCommon::Handle_qProcessInfoPID(
323     StringExtractorGDBRemote &packet) {
324   // Packet format: "qProcessInfoPID:%i" where %i is the pid
325   packet.SetFilePos(::strlen("qProcessInfoPID:"));
326   lldb::pid_t pid = packet.GetU32(LLDB_INVALID_PROCESS_ID);
327   if (pid != LLDB_INVALID_PROCESS_ID) {
328     ProcessInstanceInfo proc_info;
329     if (Host::GetProcessInfo(pid, proc_info)) {
330       StreamString response;
331       CreateProcessInfoResponse(proc_info, response);
332       return SendPacketNoLock(response.GetString());
333     }
334   }
335   return SendErrorResponse(1);
336 }
337 
338 GDBRemoteCommunication::PacketResult
339 GDBRemoteCommunicationServerCommon::Handle_qfProcessInfo(
340     StringExtractorGDBRemote &packet) {
341   m_proc_infos_index = 0;
342   m_proc_infos.Clear();
343 
344   ProcessInstanceInfoMatch match_info;
345   packet.SetFilePos(::strlen("qfProcessInfo"));
346   if (packet.GetChar() == ':') {
347     llvm::StringRef key;
348     llvm::StringRef value;
349     while (packet.GetNameColonValue(key, value)) {
350       bool success = true;
351       if (key.equals("name")) {
352         StringExtractor extractor(value);
353         std::string file;
354         extractor.GetHexByteString(file);
355         match_info.GetProcessInfo().GetExecutableFile().SetFile(
356             file, false, FileSpec::Style::native);
357       } else if (key.equals("name_match")) {
358         NameMatch name_match = llvm::StringSwitch<NameMatch>(value)
359                                    .Case("equals", NameMatch::Equals)
360                                    .Case("starts_with", NameMatch::StartsWith)
361                                    .Case("ends_with", NameMatch::EndsWith)
362                                    .Case("contains", NameMatch::Contains)
363                                    .Case("regex", NameMatch::RegularExpression)
364                                    .Default(NameMatch::Ignore);
365         match_info.SetNameMatchType(name_match);
366         if (name_match == NameMatch::Ignore)
367           return SendErrorResponse(2);
368       } else if (key.equals("pid")) {
369         lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
370         if (value.getAsInteger(0, pid))
371           return SendErrorResponse(2);
372         match_info.GetProcessInfo().SetProcessID(pid);
373       } else if (key.equals("parent_pid")) {
374         lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
375         if (value.getAsInteger(0, pid))
376           return SendErrorResponse(2);
377         match_info.GetProcessInfo().SetParentProcessID(pid);
378       } else if (key.equals("uid")) {
379         uint32_t uid = UINT32_MAX;
380         if (value.getAsInteger(0, uid))
381           return SendErrorResponse(2);
382         match_info.GetProcessInfo().SetUserID(uid);
383       } else if (key.equals("gid")) {
384         uint32_t gid = UINT32_MAX;
385         if (value.getAsInteger(0, gid))
386           return SendErrorResponse(2);
387         match_info.GetProcessInfo().SetGroupID(gid);
388       } else if (key.equals("euid")) {
389         uint32_t uid = UINT32_MAX;
390         if (value.getAsInteger(0, uid))
391           return SendErrorResponse(2);
392         match_info.GetProcessInfo().SetEffectiveUserID(uid);
393       } else if (key.equals("egid")) {
394         uint32_t gid = UINT32_MAX;
395         if (value.getAsInteger(0, gid))
396           return SendErrorResponse(2);
397         match_info.GetProcessInfo().SetEffectiveGroupID(gid);
398       } else if (key.equals("all_users")) {
399         match_info.SetMatchAllUsers(
400             OptionArgParser::ToBoolean(value, false, &success));
401       } else if (key.equals("triple")) {
402         match_info.GetProcessInfo().GetArchitecture() =
403             HostInfo::GetAugmentedArchSpec(value);
404       } else {
405         success = false;
406       }
407 
408       if (!success)
409         return SendErrorResponse(2);
410     }
411   }
412 
413   if (Host::FindProcesses(match_info, m_proc_infos)) {
414     // We found something, return the first item by calling the get subsequent
415     // process info packet handler...
416     return Handle_qsProcessInfo(packet);
417   }
418   return SendErrorResponse(3);
419 }
420 
421 GDBRemoteCommunication::PacketResult
422 GDBRemoteCommunicationServerCommon::Handle_qsProcessInfo(
423     StringExtractorGDBRemote &packet) {
424   if (m_proc_infos_index < m_proc_infos.GetSize()) {
425     StreamString response;
426     CreateProcessInfoResponse(
427         m_proc_infos.GetProcessInfoAtIndex(m_proc_infos_index), response);
428     ++m_proc_infos_index;
429     return SendPacketNoLock(response.GetString());
430   }
431   return SendErrorResponse(4);
432 }
433 
434 GDBRemoteCommunication::PacketResult
435 GDBRemoteCommunicationServerCommon::Handle_qUserName(
436     StringExtractorGDBRemote &packet) {
437 #if !defined(LLDB_DISABLE_POSIX)
438   Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
439   if (log)
440     log->Printf("GDBRemoteCommunicationServerCommon::%s begin", __FUNCTION__);
441 
442   // Packet format: "qUserName:%i" where %i is the uid
443   packet.SetFilePos(::strlen("qUserName:"));
444   uint32_t uid = packet.GetU32(UINT32_MAX);
445   if (uid != UINT32_MAX) {
446     std::string name;
447     if (HostInfo::LookupUserName(uid, name)) {
448       StreamString response;
449       response.PutCStringAsRawHex8(name.c_str());
450       return SendPacketNoLock(response.GetString());
451     }
452   }
453   if (log)
454     log->Printf("GDBRemoteCommunicationServerCommon::%s end", __FUNCTION__);
455 #endif
456   return SendErrorResponse(5);
457 }
458 
459 GDBRemoteCommunication::PacketResult
460 GDBRemoteCommunicationServerCommon::Handle_qGroupName(
461     StringExtractorGDBRemote &packet) {
462 #if !defined(LLDB_DISABLE_POSIX)
463   // Packet format: "qGroupName:%i" where %i is the gid
464   packet.SetFilePos(::strlen("qGroupName:"));
465   uint32_t gid = packet.GetU32(UINT32_MAX);
466   if (gid != UINT32_MAX) {
467     std::string name;
468     if (HostInfo::LookupGroupName(gid, name)) {
469       StreamString response;
470       response.PutCStringAsRawHex8(name.c_str());
471       return SendPacketNoLock(response.GetString());
472     }
473   }
474 #endif
475   return SendErrorResponse(6);
476 }
477 
478 GDBRemoteCommunication::PacketResult
479 GDBRemoteCommunicationServerCommon::Handle_qSpeedTest(
480     StringExtractorGDBRemote &packet) {
481   packet.SetFilePos(::strlen("qSpeedTest:"));
482 
483   llvm::StringRef key;
484   llvm::StringRef value;
485   bool success = packet.GetNameColonValue(key, value);
486   if (success && key.equals("response_size")) {
487     uint32_t response_size = 0;
488     if (!value.getAsInteger(0, response_size)) {
489       if (response_size == 0)
490         return SendOKResponse();
491       StreamString response;
492       uint32_t bytes_left = response_size;
493       response.PutCString("data:");
494       while (bytes_left > 0) {
495         if (bytes_left >= 26) {
496           response.PutCString("ABCDEFGHIJKLMNOPQRSTUVWXYZ");
497           bytes_left -= 26;
498         } else {
499           response.Printf("%*.*s;", bytes_left, bytes_left,
500                           "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
501           bytes_left = 0;
502         }
503       }
504       return SendPacketNoLock(response.GetString());
505     }
506   }
507   return SendErrorResponse(7);
508 }
509 
510 GDBRemoteCommunication::PacketResult
511 GDBRemoteCommunicationServerCommon::Handle_vFile_Open(
512     StringExtractorGDBRemote &packet) {
513   packet.SetFilePos(::strlen("vFile:open:"));
514   std::string path;
515   packet.GetHexByteStringTerminatedBy(path, ',');
516   if (!path.empty()) {
517     if (packet.GetChar() == ',') {
518       uint32_t flags =
519           File::ConvertOpenOptionsForPOSIXOpen(packet.GetHexMaxU32(false, 0));
520       if (packet.GetChar() == ',') {
521         mode_t mode = packet.GetHexMaxU32(false, 0600);
522         Status error;
523         const FileSpec path_spec{path, true};
524         int fd = ::open(path_spec.GetCString(), flags, mode);
525         const int save_errno = fd == -1 ? errno : 0;
526         StreamString response;
527         response.PutChar('F');
528         response.Printf("%i", fd);
529         if (save_errno)
530           response.Printf(",%i", save_errno);
531         return SendPacketNoLock(response.GetString());
532       }
533     }
534   }
535   return SendErrorResponse(18);
536 }
537 
538 GDBRemoteCommunication::PacketResult
539 GDBRemoteCommunicationServerCommon::Handle_vFile_Close(
540     StringExtractorGDBRemote &packet) {
541   packet.SetFilePos(::strlen("vFile:close:"));
542   int fd = packet.GetS32(-1);
543   Status error;
544   int err = -1;
545   int save_errno = 0;
546   if (fd >= 0) {
547     err = close(fd);
548     save_errno = err == -1 ? errno : 0;
549   } else {
550     save_errno = EINVAL;
551   }
552   StreamString response;
553   response.PutChar('F');
554   response.Printf("%i", err);
555   if (save_errno)
556     response.Printf(",%i", save_errno);
557   return SendPacketNoLock(response.GetString());
558 }
559 
560 GDBRemoteCommunication::PacketResult
561 GDBRemoteCommunicationServerCommon::Handle_vFile_pRead(
562     StringExtractorGDBRemote &packet) {
563 #ifdef _WIN32
564   // Not implemented on Windows
565   return SendUnimplementedResponse(
566       "GDBRemoteCommunicationServerCommon::Handle_vFile_pRead() unimplemented");
567 #else
568   StreamGDBRemote response;
569   packet.SetFilePos(::strlen("vFile:pread:"));
570   int fd = packet.GetS32(-1);
571   if (packet.GetChar() == ',') {
572     uint64_t count = packet.GetU64(UINT64_MAX);
573     if (packet.GetChar() == ',') {
574       uint64_t offset = packet.GetU64(UINT32_MAX);
575       if (count == UINT64_MAX) {
576         response.Printf("F-1:%i", EINVAL);
577         return SendPacketNoLock(response.GetString());
578       }
579 
580       std::string buffer(count, 0);
581       const ssize_t bytes_read = ::pread(fd, &buffer[0], buffer.size(), offset);
582       const int save_errno = bytes_read == -1 ? errno : 0;
583       response.PutChar('F');
584       response.Printf("%zi", bytes_read);
585       if (save_errno)
586         response.Printf(",%i", save_errno);
587       else {
588         response.PutChar(';');
589         response.PutEscapedBytes(&buffer[0], bytes_read);
590       }
591       return SendPacketNoLock(response.GetString());
592     }
593   }
594   return SendErrorResponse(21);
595 
596 #endif
597 }
598 
599 GDBRemoteCommunication::PacketResult
600 GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite(
601     StringExtractorGDBRemote &packet) {
602 #ifdef _WIN32
603   return SendUnimplementedResponse("GDBRemoteCommunicationServerCommon::Handle_"
604                                    "vFile_pWrite() unimplemented");
605 #else
606   packet.SetFilePos(::strlen("vFile:pwrite:"));
607 
608   StreamGDBRemote response;
609   response.PutChar('F');
610 
611   int fd = packet.GetU32(UINT32_MAX);
612   if (packet.GetChar() == ',') {
613     off_t offset = packet.GetU64(UINT32_MAX);
614     if (packet.GetChar() == ',') {
615       std::string buffer;
616       if (packet.GetEscapedBinaryData(buffer)) {
617         const ssize_t bytes_written =
618             ::pwrite(fd, buffer.data(), buffer.size(), offset);
619         const int save_errno = bytes_written == -1 ? errno : 0;
620         response.Printf("%zi", bytes_written);
621         if (save_errno)
622           response.Printf(",%i", save_errno);
623       } else {
624         response.Printf("-1,%i", EINVAL);
625       }
626       return SendPacketNoLock(response.GetString());
627     }
628   }
629   return SendErrorResponse(27);
630 #endif
631 }
632 
633 GDBRemoteCommunication::PacketResult
634 GDBRemoteCommunicationServerCommon::Handle_vFile_Size(
635     StringExtractorGDBRemote &packet) {
636   packet.SetFilePos(::strlen("vFile:size:"));
637   std::string path;
638   packet.GetHexByteString(path);
639   if (!path.empty()) {
640     uint64_t Size;
641     if (llvm::sys::fs::file_size(path, Size))
642       return SendErrorResponse(5);
643     StreamString response;
644     response.PutChar('F');
645     response.PutHex64(Size);
646     if (Size == UINT64_MAX) {
647       response.PutChar(',');
648       response.PutHex64(Size); // TODO: replace with Host::GetSyswideErrorCode()
649     }
650     return SendPacketNoLock(response.GetString());
651   }
652   return SendErrorResponse(22);
653 }
654 
655 GDBRemoteCommunication::PacketResult
656 GDBRemoteCommunicationServerCommon::Handle_vFile_Mode(
657     StringExtractorGDBRemote &packet) {
658   packet.SetFilePos(::strlen("vFile:mode:"));
659   std::string path;
660   packet.GetHexByteString(path);
661   if (!path.empty()) {
662     Status error;
663     const uint32_t mode = File::GetPermissions(FileSpec{path, true}, error);
664     StreamString response;
665     response.Printf("F%u", mode);
666     if (mode == 0 || error.Fail())
667       response.Printf(",%i", (int)error.GetError());
668     return SendPacketNoLock(response.GetString());
669   }
670   return SendErrorResponse(23);
671 }
672 
673 GDBRemoteCommunication::PacketResult
674 GDBRemoteCommunicationServerCommon::Handle_vFile_Exists(
675     StringExtractorGDBRemote &packet) {
676   packet.SetFilePos(::strlen("vFile:exists:"));
677   std::string path;
678   packet.GetHexByteString(path);
679   if (!path.empty()) {
680     bool retcode = llvm::sys::fs::exists(path);
681     StreamString response;
682     response.PutChar('F');
683     response.PutChar(',');
684     if (retcode)
685       response.PutChar('1');
686     else
687       response.PutChar('0');
688     return SendPacketNoLock(response.GetString());
689   }
690   return SendErrorResponse(24);
691 }
692 
693 GDBRemoteCommunication::PacketResult
694 GDBRemoteCommunicationServerCommon::Handle_vFile_symlink(
695     StringExtractorGDBRemote &packet) {
696   packet.SetFilePos(::strlen("vFile:symlink:"));
697   std::string dst, src;
698   packet.GetHexByteStringTerminatedBy(dst, ',');
699   packet.GetChar(); // Skip ',' char
700   packet.GetHexByteString(src);
701   Status error = FileSystem::Symlink(FileSpec{src, true}, FileSpec{dst, false});
702   StreamString response;
703   response.Printf("F%u,%u", error.GetError(), error.GetError());
704   return SendPacketNoLock(response.GetString());
705 }
706 
707 GDBRemoteCommunication::PacketResult
708 GDBRemoteCommunicationServerCommon::Handle_vFile_unlink(
709     StringExtractorGDBRemote &packet) {
710   packet.SetFilePos(::strlen("vFile:unlink:"));
711   std::string path;
712   packet.GetHexByteString(path);
713   Status error(llvm::sys::fs::remove(path));
714   StreamString response;
715   response.Printf("F%u,%u", error.GetError(), error.GetError());
716   return SendPacketNoLock(response.GetString());
717 }
718 
719 GDBRemoteCommunication::PacketResult
720 GDBRemoteCommunicationServerCommon::Handle_qPlatform_shell(
721     StringExtractorGDBRemote &packet) {
722   packet.SetFilePos(::strlen("qPlatform_shell:"));
723   std::string path;
724   std::string working_dir;
725   packet.GetHexByteStringTerminatedBy(path, ',');
726   if (!path.empty()) {
727     if (packet.GetChar() == ',') {
728       // FIXME: add timeout to qPlatform_shell packet
729       // uint32_t timeout = packet.GetHexMaxU32(false, 32);
730       if (packet.GetChar() == ',')
731         packet.GetHexByteString(working_dir);
732       int status, signo;
733       std::string output;
734       Status err = Host::RunShellCommand(
735           path.c_str(), FileSpec{working_dir, true}, &status, &signo, &output,
736           std::chrono::seconds(10));
737       StreamGDBRemote response;
738       if (err.Fail()) {
739         response.PutCString("F,");
740         response.PutHex32(UINT32_MAX);
741       } else {
742         response.PutCString("F,");
743         response.PutHex32(status);
744         response.PutChar(',');
745         response.PutHex32(signo);
746         response.PutChar(',');
747         response.PutEscapedBytes(output.c_str(), output.size());
748       }
749       return SendPacketNoLock(response.GetString());
750     }
751   }
752   return SendErrorResponse(24);
753 }
754 
755 GDBRemoteCommunication::PacketResult
756 GDBRemoteCommunicationServerCommon::Handle_vFile_Stat(
757     StringExtractorGDBRemote &packet) {
758   return SendUnimplementedResponse(
759       "GDBRemoteCommunicationServerCommon::Handle_vFile_Stat() unimplemented");
760 }
761 
762 GDBRemoteCommunication::PacketResult
763 GDBRemoteCommunicationServerCommon::Handle_vFile_MD5(
764     StringExtractorGDBRemote &packet) {
765   packet.SetFilePos(::strlen("vFile:MD5:"));
766   std::string path;
767   packet.GetHexByteString(path);
768   if (!path.empty()) {
769     StreamGDBRemote response;
770     auto Result = llvm::sys::fs::md5_contents(path);
771     if (!Result) {
772       response.PutCString("F,");
773       response.PutCString("x");
774     } else {
775       response.PutCString("F,");
776       response.PutHex64(Result->low());
777       response.PutHex64(Result->high());
778     }
779     return SendPacketNoLock(response.GetString());
780   }
781   return SendErrorResponse(25);
782 }
783 
784 GDBRemoteCommunication::PacketResult
785 GDBRemoteCommunicationServerCommon::Handle_qPlatform_mkdir(
786     StringExtractorGDBRemote &packet) {
787   packet.SetFilePos(::strlen("qPlatform_mkdir:"));
788   mode_t mode = packet.GetHexMaxU32(false, UINT32_MAX);
789   if (packet.GetChar() == ',') {
790     std::string path;
791     packet.GetHexByteString(path);
792     Status error(llvm::sys::fs::create_directory(path, mode));
793 
794     StreamGDBRemote response;
795     response.Printf("F%u", error.GetError());
796 
797     return SendPacketNoLock(response.GetString());
798   }
799   return SendErrorResponse(20);
800 }
801 
802 GDBRemoteCommunication::PacketResult
803 GDBRemoteCommunicationServerCommon::Handle_qPlatform_chmod(
804     StringExtractorGDBRemote &packet) {
805   packet.SetFilePos(::strlen("qPlatform_chmod:"));
806 
807   auto perms =
808       static_cast<llvm::sys::fs::perms>(packet.GetHexMaxU32(false, UINT32_MAX));
809   if (packet.GetChar() == ',') {
810     std::string path;
811     packet.GetHexByteString(path);
812     Status error(llvm::sys::fs::setPermissions(path, perms));
813 
814     StreamGDBRemote response;
815     response.Printf("F%u", error.GetError());
816 
817     return SendPacketNoLock(response.GetString());
818   }
819   return SendErrorResponse(19);
820 }
821 
822 GDBRemoteCommunication::PacketResult
823 GDBRemoteCommunicationServerCommon::Handle_qSupported(
824     StringExtractorGDBRemote &packet) {
825   StreamGDBRemote response;
826 
827   // Features common to lldb-platform and llgs.
828   uint32_t max_packet_size = 128 * 1024; // 128KBytes is a reasonable max packet
829                                          // size--debugger can always use less
830   response.Printf("PacketSize=%x", max_packet_size);
831 
832   response.PutCString(";QStartNoAckMode+");
833   response.PutCString(";QThreadSuffixSupported+");
834   response.PutCString(";QListThreadsInStopReply+");
835   response.PutCString(";qEcho+");
836 #if defined(__linux__) || defined(__NetBSD__)
837   response.PutCString(";QPassSignals+");
838   response.PutCString(";qXfer:auxv:read+");
839 #endif
840 
841   return SendPacketNoLock(response.GetString());
842 }
843 
844 GDBRemoteCommunication::PacketResult
845 GDBRemoteCommunicationServerCommon::Handle_QThreadSuffixSupported(
846     StringExtractorGDBRemote &packet) {
847   m_thread_suffix_supported = true;
848   return SendOKResponse();
849 }
850 
851 GDBRemoteCommunication::PacketResult
852 GDBRemoteCommunicationServerCommon::Handle_QListThreadsInStopReply(
853     StringExtractorGDBRemote &packet) {
854   m_list_threads_in_stop_reply = true;
855   return SendOKResponse();
856 }
857 
858 GDBRemoteCommunication::PacketResult
859 GDBRemoteCommunicationServerCommon::Handle_QSetDetachOnError(
860     StringExtractorGDBRemote &packet) {
861   packet.SetFilePos(::strlen("QSetDetachOnError:"));
862   if (packet.GetU32(0))
863     m_process_launch_info.GetFlags().Set(eLaunchFlagDetachOnError);
864   else
865     m_process_launch_info.GetFlags().Clear(eLaunchFlagDetachOnError);
866   return SendOKResponse();
867 }
868 
869 GDBRemoteCommunication::PacketResult
870 GDBRemoteCommunicationServerCommon::Handle_QStartNoAckMode(
871     StringExtractorGDBRemote &packet) {
872   // Send response first before changing m_send_acks to we ack this packet
873   PacketResult packet_result = SendOKResponse();
874   m_send_acks = false;
875   return packet_result;
876 }
877 
878 GDBRemoteCommunication::PacketResult
879 GDBRemoteCommunicationServerCommon::Handle_QSetSTDIN(
880     StringExtractorGDBRemote &packet) {
881   packet.SetFilePos(::strlen("QSetSTDIN:"));
882   FileAction file_action;
883   std::string path;
884   packet.GetHexByteString(path);
885   const bool read = true;
886   const bool write = false;
887   if (file_action.Open(STDIN_FILENO, FileSpec{path, false}, read, write)) {
888     m_process_launch_info.AppendFileAction(file_action);
889     return SendOKResponse();
890   }
891   return SendErrorResponse(15);
892 }
893 
894 GDBRemoteCommunication::PacketResult
895 GDBRemoteCommunicationServerCommon::Handle_QSetSTDOUT(
896     StringExtractorGDBRemote &packet) {
897   packet.SetFilePos(::strlen("QSetSTDOUT:"));
898   FileAction file_action;
899   std::string path;
900   packet.GetHexByteString(path);
901   const bool read = false;
902   const bool write = true;
903   if (file_action.Open(STDOUT_FILENO, FileSpec{path, false}, read, write)) {
904     m_process_launch_info.AppendFileAction(file_action);
905     return SendOKResponse();
906   }
907   return SendErrorResponse(16);
908 }
909 
910 GDBRemoteCommunication::PacketResult
911 GDBRemoteCommunicationServerCommon::Handle_QSetSTDERR(
912     StringExtractorGDBRemote &packet) {
913   packet.SetFilePos(::strlen("QSetSTDERR:"));
914   FileAction file_action;
915   std::string path;
916   packet.GetHexByteString(path);
917   const bool read = false;
918   const bool write = true;
919   if (file_action.Open(STDERR_FILENO, FileSpec{path, false}, read, write)) {
920     m_process_launch_info.AppendFileAction(file_action);
921     return SendOKResponse();
922   }
923   return SendErrorResponse(17);
924 }
925 
926 GDBRemoteCommunication::PacketResult
927 GDBRemoteCommunicationServerCommon::Handle_qLaunchSuccess(
928     StringExtractorGDBRemote &packet) {
929   if (m_process_launch_error.Success())
930     return SendOKResponse();
931   StreamString response;
932   response.PutChar('E');
933   response.PutCString(m_process_launch_error.AsCString("<unknown error>"));
934   return SendPacketNoLock(response.GetString());
935 }
936 
937 GDBRemoteCommunication::PacketResult
938 GDBRemoteCommunicationServerCommon::Handle_QEnvironment(
939     StringExtractorGDBRemote &packet) {
940   packet.SetFilePos(::strlen("QEnvironment:"));
941   const uint32_t bytes_left = packet.GetBytesLeft();
942   if (bytes_left > 0) {
943     m_process_launch_info.GetEnvironment().insert(packet.Peek());
944     return SendOKResponse();
945   }
946   return SendErrorResponse(12);
947 }
948 
949 GDBRemoteCommunication::PacketResult
950 GDBRemoteCommunicationServerCommon::Handle_QEnvironmentHexEncoded(
951     StringExtractorGDBRemote &packet) {
952   packet.SetFilePos(::strlen("QEnvironmentHexEncoded:"));
953   const uint32_t bytes_left = packet.GetBytesLeft();
954   if (bytes_left > 0) {
955     std::string str;
956     packet.GetHexByteString(str);
957     m_process_launch_info.GetEnvironment().insert(str);
958     return SendOKResponse();
959   }
960   return SendErrorResponse(12);
961 }
962 
963 GDBRemoteCommunication::PacketResult
964 GDBRemoteCommunicationServerCommon::Handle_QLaunchArch(
965     StringExtractorGDBRemote &packet) {
966   packet.SetFilePos(::strlen("QLaunchArch:"));
967   const uint32_t bytes_left = packet.GetBytesLeft();
968   if (bytes_left > 0) {
969     const char *arch_triple = packet.Peek();
970     m_process_launch_info.SetArchitecture(HostInfo::GetAugmentedArchSpec(arch_triple));
971     return SendOKResponse();
972   }
973   return SendErrorResponse(13);
974 }
975 
976 GDBRemoteCommunication::PacketResult
977 GDBRemoteCommunicationServerCommon::Handle_A(StringExtractorGDBRemote &packet) {
978   // The 'A' packet is the most over designed packet ever here with redundant
979   // argument indexes, redundant argument lengths and needed hex encoded
980   // argument string values. Really all that is needed is a comma separated hex
981   // encoded argument value list, but we will stay true to the documented
982   // version of the 'A' packet here...
983 
984   Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
985   int actual_arg_index = 0;
986 
987   packet.SetFilePos(1); // Skip the 'A'
988   bool success = true;
989   while (success && packet.GetBytesLeft() > 0) {
990     // Decode the decimal argument string length. This length is the number of
991     // hex nibbles in the argument string value.
992     const uint32_t arg_len = packet.GetU32(UINT32_MAX);
993     if (arg_len == UINT32_MAX)
994       success = false;
995     else {
996       // Make sure the argument hex string length is followed by a comma
997       if (packet.GetChar() != ',')
998         success = false;
999       else {
1000         // Decode the argument index. We ignore this really because who would
1001         // really send down the arguments in a random order???
1002         const uint32_t arg_idx = packet.GetU32(UINT32_MAX);
1003         if (arg_idx == UINT32_MAX)
1004           success = false;
1005         else {
1006           // Make sure the argument index is followed by a comma
1007           if (packet.GetChar() != ',')
1008             success = false;
1009           else {
1010             // Decode the argument string value from hex bytes back into a UTF8
1011             // string and make sure the length matches the one supplied in the
1012             // packet
1013             std::string arg;
1014             if (packet.GetHexByteStringFixedLength(arg, arg_len) !=
1015                 (arg_len / 2))
1016               success = false;
1017             else {
1018               // If there are any bytes left
1019               if (packet.GetBytesLeft()) {
1020                 if (packet.GetChar() != ',')
1021                   success = false;
1022               }
1023 
1024               if (success) {
1025                 if (arg_idx == 0)
1026                   m_process_launch_info.GetExecutableFile().SetFile(
1027                       arg, false, FileSpec::Style::native);
1028                 m_process_launch_info.GetArguments().AppendArgument(arg);
1029                 if (log)
1030                   log->Printf("LLGSPacketHandler::%s added arg %d: \"%s\"",
1031                               __FUNCTION__, actual_arg_index, arg.c_str());
1032                 ++actual_arg_index;
1033               }
1034             }
1035           }
1036         }
1037       }
1038     }
1039   }
1040 
1041   if (success) {
1042     m_process_launch_error = LaunchProcess();
1043     if (m_process_launch_error.Success())
1044       return SendOKResponse();
1045     LLDB_LOG(log, "failed to launch exe: {0}", m_process_launch_error);
1046   }
1047   return SendErrorResponse(8);
1048 }
1049 
1050 GDBRemoteCommunication::PacketResult
1051 GDBRemoteCommunicationServerCommon::Handle_qEcho(
1052     StringExtractorGDBRemote &packet) {
1053   // Just echo back the exact same packet for qEcho...
1054   return SendPacketNoLock(packet.GetStringRef());
1055 }
1056 
1057 GDBRemoteCommunication::PacketResult
1058 GDBRemoteCommunicationServerCommon::Handle_qModuleInfo(
1059     StringExtractorGDBRemote &packet) {
1060   packet.SetFilePos(::strlen("qModuleInfo:"));
1061 
1062   std::string module_path;
1063   packet.GetHexByteStringTerminatedBy(module_path, ';');
1064   if (module_path.empty())
1065     return SendErrorResponse(1);
1066 
1067   if (packet.GetChar() != ';')
1068     return SendErrorResponse(2);
1069 
1070   std::string triple;
1071   packet.GetHexByteString(triple);
1072 
1073   ModuleSpec matched_module_spec = GetModuleInfo(module_path, triple);
1074   if (!matched_module_spec.GetFileSpec())
1075     return SendErrorResponse(3);
1076 
1077   const auto file_offset = matched_module_spec.GetObjectOffset();
1078   const auto file_size = matched_module_spec.GetObjectSize();
1079   const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
1080 
1081   StreamGDBRemote response;
1082 
1083   if (uuid_str.empty()) {
1084     auto Result = llvm::sys::fs::md5_contents(matched_module_spec.GetFileSpec().GetPath());
1085     if (!Result)
1086       return SendErrorResponse(5);
1087     response.PutCString("md5:");
1088     response.PutCStringAsRawHex8(Result->digest().c_str());
1089   } else {
1090     response.PutCString("uuid:");
1091     response.PutCStringAsRawHex8(uuid_str.c_str());
1092   }
1093   response.PutChar(';');
1094 
1095   const auto &module_arch = matched_module_spec.GetArchitecture();
1096   response.PutCString("triple:");
1097   response.PutCStringAsRawHex8(module_arch.GetTriple().getTriple().c_str());
1098   response.PutChar(';');
1099 
1100   response.PutCString("file_path:");
1101   response.PutCStringAsRawHex8(matched_module_spec.GetFileSpec().GetCString());
1102   response.PutChar(';');
1103   response.PutCString("file_offset:");
1104   response.PutHex64(file_offset);
1105   response.PutChar(';');
1106   response.PutCString("file_size:");
1107   response.PutHex64(file_size);
1108   response.PutChar(';');
1109 
1110   return SendPacketNoLock(response.GetString());
1111 }
1112 
1113 GDBRemoteCommunication::PacketResult
1114 GDBRemoteCommunicationServerCommon::Handle_jModulesInfo(
1115     StringExtractorGDBRemote &packet) {
1116   packet.SetFilePos(::strlen("jModulesInfo:"));
1117 
1118   StructuredData::ObjectSP object_sp = StructuredData::ParseJSON(packet.Peek());
1119   if (!object_sp)
1120     return SendErrorResponse(1);
1121 
1122   StructuredData::Array *packet_array = object_sp->GetAsArray();
1123   if (!packet_array)
1124     return SendErrorResponse(2);
1125 
1126   JSONArray::SP response_array_sp = std::make_shared<JSONArray>();
1127   for (size_t i = 0; i < packet_array->GetSize(); ++i) {
1128     StructuredData::Dictionary *query =
1129         packet_array->GetItemAtIndex(i)->GetAsDictionary();
1130     if (!query)
1131       continue;
1132     llvm::StringRef file, triple;
1133     if (!query->GetValueForKeyAsString("file", file) ||
1134         !query->GetValueForKeyAsString("triple", triple))
1135       continue;
1136 
1137     ModuleSpec matched_module_spec = GetModuleInfo(file, triple);
1138     if (!matched_module_spec.GetFileSpec())
1139       continue;
1140 
1141     const auto file_offset = matched_module_spec.GetObjectOffset();
1142     const auto file_size = matched_module_spec.GetObjectSize();
1143     const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
1144 
1145     if (uuid_str.empty())
1146       continue;
1147 
1148     JSONObject::SP response = std::make_shared<JSONObject>();
1149     response_array_sp->AppendObject(response);
1150     response->SetObject("uuid", std::make_shared<JSONString>(uuid_str));
1151     response->SetObject(
1152         "triple",
1153         std::make_shared<JSONString>(
1154             matched_module_spec.GetArchitecture().GetTriple().getTriple()));
1155     response->SetObject("file_path",
1156                         std::make_shared<JSONString>(
1157                             matched_module_spec.GetFileSpec().GetPath()));
1158     response->SetObject("file_offset",
1159                         std::make_shared<JSONNumber>(file_offset));
1160     response->SetObject("file_size", std::make_shared<JSONNumber>(file_size));
1161   }
1162 
1163   StreamString response;
1164   response_array_sp->Write(response);
1165   StreamGDBRemote escaped_response;
1166   escaped_response.PutEscapedBytes(response.GetString().data(),
1167                                    response.GetSize());
1168   return SendPacketNoLock(escaped_response.GetString());
1169 }
1170 
1171 void GDBRemoteCommunicationServerCommon::CreateProcessInfoResponse(
1172     const ProcessInstanceInfo &proc_info, StreamString &response) {
1173   response.Printf(
1174       "pid:%" PRIu64 ";ppid:%" PRIu64 ";uid:%i;gid:%i;euid:%i;egid:%i;",
1175       proc_info.GetProcessID(), proc_info.GetParentProcessID(),
1176       proc_info.GetUserID(), proc_info.GetGroupID(),
1177       proc_info.GetEffectiveUserID(), proc_info.GetEffectiveGroupID());
1178   response.PutCString("name:");
1179   response.PutCStringAsRawHex8(proc_info.GetExecutableFile().GetCString());
1180   response.PutChar(';');
1181   const ArchSpec &proc_arch = proc_info.GetArchitecture();
1182   if (proc_arch.IsValid()) {
1183     const llvm::Triple &proc_triple = proc_arch.GetTriple();
1184     response.PutCString("triple:");
1185     response.PutCStringAsRawHex8(proc_triple.getTriple().c_str());
1186     response.PutChar(';');
1187   }
1188 }
1189 
1190 void GDBRemoteCommunicationServerCommon::
1191     CreateProcessInfoResponse_DebugServerStyle(
1192         const ProcessInstanceInfo &proc_info, StreamString &response) {
1193   response.Printf("pid:%" PRIx64 ";parent-pid:%" PRIx64
1194                   ";real-uid:%x;real-gid:%x;effective-uid:%x;effective-gid:%x;",
1195                   proc_info.GetProcessID(), proc_info.GetParentProcessID(),
1196                   proc_info.GetUserID(), proc_info.GetGroupID(),
1197                   proc_info.GetEffectiveUserID(),
1198                   proc_info.GetEffectiveGroupID());
1199 
1200   const ArchSpec &proc_arch = proc_info.GetArchitecture();
1201   if (proc_arch.IsValid()) {
1202     const llvm::Triple &proc_triple = proc_arch.GetTriple();
1203 #if defined(__APPLE__)
1204     // We'll send cputype/cpusubtype.
1205     const uint32_t cpu_type = proc_arch.GetMachOCPUType();
1206     if (cpu_type != 0)
1207       response.Printf("cputype:%" PRIx32 ";", cpu_type);
1208 
1209     const uint32_t cpu_subtype = proc_arch.GetMachOCPUSubType();
1210     if (cpu_subtype != 0)
1211       response.Printf("cpusubtype:%" PRIx32 ";", cpu_subtype);
1212 
1213     const std::string vendor = proc_triple.getVendorName();
1214     if (!vendor.empty())
1215       response.Printf("vendor:%s;", vendor.c_str());
1216 #else
1217     // We'll send the triple.
1218     response.PutCString("triple:");
1219     response.PutCStringAsRawHex8(proc_triple.getTriple().c_str());
1220     response.PutChar(';');
1221 #endif
1222     std::string ostype = proc_triple.getOSName();
1223     // Adjust so ostype reports ios for Apple/ARM and Apple/ARM64.
1224     if (proc_triple.getVendor() == llvm::Triple::Apple) {
1225       switch (proc_triple.getArch()) {
1226       case llvm::Triple::arm:
1227       case llvm::Triple::thumb:
1228       case llvm::Triple::aarch64:
1229         ostype = "ios";
1230         break;
1231       default:
1232         // No change.
1233         break;
1234       }
1235     }
1236     response.Printf("ostype:%s;", ostype.c_str());
1237 
1238     switch (proc_arch.GetByteOrder()) {
1239     case lldb::eByteOrderLittle:
1240       response.PutCString("endian:little;");
1241       break;
1242     case lldb::eByteOrderBig:
1243       response.PutCString("endian:big;");
1244       break;
1245     case lldb::eByteOrderPDP:
1246       response.PutCString("endian:pdp;");
1247       break;
1248     default:
1249       // Nothing.
1250       break;
1251     }
1252     // In case of MIPS64, pointer size is depend on ELF ABI For N32 the pointer
1253     // size is 4 and for N64 it is 8
1254     std::string abi = proc_arch.GetTargetABI();
1255     if (!abi.empty())
1256       response.Printf("elf_abi:%s;", abi.c_str());
1257     response.Printf("ptrsize:%d;", proc_arch.GetAddressByteSize());
1258   }
1259 }
1260 
1261 FileSpec GDBRemoteCommunicationServerCommon::FindModuleFile(
1262     const std::string &module_path, const ArchSpec &arch) {
1263 #ifdef __ANDROID__
1264   return HostInfoAndroid::ResolveLibraryPath(module_path, arch);
1265 #else
1266   return FileSpec(module_path, true);
1267 #endif
1268 }
1269 
1270 ModuleSpec
1271 GDBRemoteCommunicationServerCommon::GetModuleInfo(llvm::StringRef module_path,
1272                                                   llvm::StringRef triple) {
1273   ArchSpec arch(triple);
1274 
1275   const FileSpec req_module_path_spec(module_path, true);
1276   const FileSpec module_path_spec =
1277       FindModuleFile(req_module_path_spec.GetPath(), arch);
1278   const ModuleSpec module_spec(module_path_spec, arch);
1279 
1280   ModuleSpecList module_specs;
1281   if (!ObjectFile::GetModuleSpecifications(module_path_spec, 0, 0,
1282                                            module_specs))
1283     return ModuleSpec();
1284 
1285   ModuleSpec matched_module_spec;
1286   if (!module_specs.FindMatchingModuleSpec(module_spec, matched_module_spec))
1287     return ModuleSpec();
1288 
1289   return matched_module_spec;
1290 }
1291