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/StringConvert.h"
32 #include "lldb/Interpreter/Args.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 "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 == ArchSpec::kCore_arm_any) {
223 // Indicate the OS type.
224 #if defined(TARGET_OS_TV) && TARGET_OS_TV == 1
225     response.PutCString("ostype:tvos;");
226 #elif defined(TARGET_OS_WATCH) && TARGET_OS_WATCH == 1
227     response.PutCString("ostype:watchos;");
228 #else
229     response.PutCString("ostype:ios;");
230 #endif
231 
232     // On arm, we use "synchronous" watchpoints which means the exception is
233     // delivered before the instruction executes.
234     response.PutCString("watchpoint_exceptions_received:before;");
235   } else {
236     response.PutCString("ostype:macosx;");
237     response.Printf("watchpoint_exceptions_received:after;");
238   }
239 
240 #else
241   if (host_arch.GetMachine() == llvm::Triple::aarch64 ||
242       host_arch.GetMachine() == llvm::Triple::aarch64_be ||
243       host_arch.GetMachine() == llvm::Triple::arm ||
244       host_arch.GetMachine() == llvm::Triple::armeb ||
245       host_arch.GetMachine() == llvm::Triple::mips64 ||
246       host_arch.GetMachine() == llvm::Triple::mips64el ||
247       host_arch.GetMachine() == llvm::Triple::mips ||
248       host_arch.GetMachine() == llvm::Triple::mipsel)
249     response.Printf("watchpoint_exceptions_received:before;");
250   else
251     response.Printf("watchpoint_exceptions_received:after;");
252 #endif
253 
254   switch (endian::InlHostByteOrder()) {
255   case eByteOrderBig:
256     response.PutCString("endian:big;");
257     break;
258   case eByteOrderLittle:
259     response.PutCString("endian:little;");
260     break;
261   case eByteOrderPDP:
262     response.PutCString("endian:pdp;");
263     break;
264   default:
265     response.PutCString("endian:unknown;");
266     break;
267   }
268 
269   uint32_t major = UINT32_MAX;
270   uint32_t minor = UINT32_MAX;
271   uint32_t update = UINT32_MAX;
272   if (HostInfo::GetOSVersion(major, minor, update)) {
273     if (major != UINT32_MAX) {
274       response.Printf("os_version:%u", major);
275       if (minor != UINT32_MAX) {
276         response.Printf(".%u", minor);
277         if (update != UINT32_MAX)
278           response.Printf(".%u", update);
279       }
280       response.PutChar(';');
281     }
282   }
283 
284   std::string s;
285   if (HostInfo::GetOSBuildString(s)) {
286     response.PutCString("os_build:");
287     response.PutCStringAsRawHex8(s.c_str());
288     response.PutChar(';');
289   }
290   if (HostInfo::GetOSKernelDescription(s)) {
291     response.PutCString("os_kernel:");
292     response.PutCStringAsRawHex8(s.c_str());
293     response.PutChar(';');
294   }
295 
296 #if defined(__APPLE__)
297 
298 #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
299   // For iOS devices, we are connected through a USB Mux so we never pretend
300   // to actually have a hostname as far as the remote lldb that is connecting
301   // to this lldb-platform is concerned
302   response.PutCString("hostname:");
303   response.PutCStringAsRawHex8("127.0.0.1");
304   response.PutChar(';');
305 #else  // #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
306   if (HostInfo::GetHostname(s)) {
307     response.PutCString("hostname:");
308     response.PutCStringAsRawHex8(s.c_str());
309     response.PutChar(';');
310   }
311 #endif // #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
312 
313 #else  // #if defined(__APPLE__)
314   if (HostInfo::GetHostname(s)) {
315     response.PutCString("hostname:");
316     response.PutCStringAsRawHex8(s.c_str());
317     response.PutChar(';');
318   }
319 #endif // #if defined(__APPLE__)
320 
321   if (g_default_packet_timeout_sec > 0)
322     response.Printf("default_packet_timeout:%u;", g_default_packet_timeout_sec);
323 
324   return SendPacketNoLock(response.GetString());
325 }
326 
327 GDBRemoteCommunication::PacketResult
328 GDBRemoteCommunicationServerCommon::Handle_qProcessInfoPID(
329     StringExtractorGDBRemote &packet) {
330   // Packet format: "qProcessInfoPID:%i" where %i is the pid
331   packet.SetFilePos(::strlen("qProcessInfoPID:"));
332   lldb::pid_t pid = packet.GetU32(LLDB_INVALID_PROCESS_ID);
333   if (pid != LLDB_INVALID_PROCESS_ID) {
334     ProcessInstanceInfo proc_info;
335     if (Host::GetProcessInfo(pid, proc_info)) {
336       StreamString response;
337       CreateProcessInfoResponse(proc_info, response);
338       return SendPacketNoLock(response.GetString());
339     }
340   }
341   return SendErrorResponse(1);
342 }
343 
344 GDBRemoteCommunication::PacketResult
345 GDBRemoteCommunicationServerCommon::Handle_qfProcessInfo(
346     StringExtractorGDBRemote &packet) {
347   m_proc_infos_index = 0;
348   m_proc_infos.Clear();
349 
350   ProcessInstanceInfoMatch match_info;
351   packet.SetFilePos(::strlen("qfProcessInfo"));
352   if (packet.GetChar() == ':') {
353     llvm::StringRef key;
354     llvm::StringRef value;
355     while (packet.GetNameColonValue(key, value)) {
356       bool success = true;
357       if (key.equals("name")) {
358         StringExtractor extractor(value);
359         std::string file;
360         extractor.GetHexByteString(file);
361         match_info.GetProcessInfo().GetExecutableFile().SetFile(file, false);
362       } else if (key.equals("name_match")) {
363         NameMatch name_match = llvm::StringSwitch<NameMatch>(value)
364                                    .Case("equals", NameMatch::Equals)
365                                    .Case("starts_with", NameMatch::StartsWith)
366                                    .Case("ends_with", NameMatch::EndsWith)
367                                    .Case("contains", NameMatch::Contains)
368                                    .Case("regex", NameMatch::RegularExpression)
369                                    .Default(NameMatch::Ignore);
370         match_info.SetNameMatchType(name_match);
371         if (name_match == NameMatch::Ignore)
372           return SendErrorResponse(2);
373       } else if (key.equals("pid")) {
374         lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
375         if (value.getAsInteger(0, pid))
376           return SendErrorResponse(2);
377         match_info.GetProcessInfo().SetProcessID(pid);
378       } else if (key.equals("parent_pid")) {
379         lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
380         if (value.getAsInteger(0, pid))
381           return SendErrorResponse(2);
382         match_info.GetProcessInfo().SetParentProcessID(pid);
383       } else if (key.equals("uid")) {
384         uint32_t uid = UINT32_MAX;
385         if (value.getAsInteger(0, uid))
386           return SendErrorResponse(2);
387         match_info.GetProcessInfo().SetUserID(uid);
388       } else if (key.equals("gid")) {
389         uint32_t gid = UINT32_MAX;
390         if (value.getAsInteger(0, gid))
391           return SendErrorResponse(2);
392         match_info.GetProcessInfo().SetGroupID(gid);
393       } else if (key.equals("euid")) {
394         uint32_t uid = UINT32_MAX;
395         if (value.getAsInteger(0, uid))
396           return SendErrorResponse(2);
397         match_info.GetProcessInfo().SetEffectiveUserID(uid);
398       } else if (key.equals("egid")) {
399         uint32_t gid = UINT32_MAX;
400         if (value.getAsInteger(0, gid))
401           return SendErrorResponse(2);
402         match_info.GetProcessInfo().SetEffectiveGroupID(gid);
403       } else if (key.equals("all_users")) {
404         match_info.SetMatchAllUsers(
405             Args::StringToBoolean(value, false, &success));
406       } else if (key.equals("triple")) {
407         match_info.GetProcessInfo().GetArchitecture().SetTriple(
408             value.str().c_str(), NULL);
409       } else {
410         success = false;
411       }
412 
413       if (!success)
414         return SendErrorResponse(2);
415     }
416   }
417 
418   if (Host::FindProcesses(match_info, m_proc_infos)) {
419     // We found something, return the first item by calling the get
420     // subsequent process info packet handler...
421     return Handle_qsProcessInfo(packet);
422   }
423   return SendErrorResponse(3);
424 }
425 
426 GDBRemoteCommunication::PacketResult
427 GDBRemoteCommunicationServerCommon::Handle_qsProcessInfo(
428     StringExtractorGDBRemote &packet) {
429   if (m_proc_infos_index < m_proc_infos.GetSize()) {
430     StreamString response;
431     CreateProcessInfoResponse(
432         m_proc_infos.GetProcessInfoAtIndex(m_proc_infos_index), response);
433     ++m_proc_infos_index;
434     return SendPacketNoLock(response.GetString());
435   }
436   return SendErrorResponse(4);
437 }
438 
439 GDBRemoteCommunication::PacketResult
440 GDBRemoteCommunicationServerCommon::Handle_qUserName(
441     StringExtractorGDBRemote &packet) {
442 #if !defined(LLDB_DISABLE_POSIX)
443   Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
444   if (log)
445     log->Printf("GDBRemoteCommunicationServerCommon::%s begin", __FUNCTION__);
446 
447   // Packet format: "qUserName:%i" where %i is the uid
448   packet.SetFilePos(::strlen("qUserName:"));
449   uint32_t uid = packet.GetU32(UINT32_MAX);
450   if (uid != UINT32_MAX) {
451     std::string name;
452     if (HostInfo::LookupUserName(uid, name)) {
453       StreamString response;
454       response.PutCStringAsRawHex8(name.c_str());
455       return SendPacketNoLock(response.GetString());
456     }
457   }
458   if (log)
459     log->Printf("GDBRemoteCommunicationServerCommon::%s end", __FUNCTION__);
460 #endif
461   return SendErrorResponse(5);
462 }
463 
464 GDBRemoteCommunication::PacketResult
465 GDBRemoteCommunicationServerCommon::Handle_qGroupName(
466     StringExtractorGDBRemote &packet) {
467 #if !defined(LLDB_DISABLE_POSIX)
468   // Packet format: "qGroupName:%i" where %i is the gid
469   packet.SetFilePos(::strlen("qGroupName:"));
470   uint32_t gid = packet.GetU32(UINT32_MAX);
471   if (gid != UINT32_MAX) {
472     std::string name;
473     if (HostInfo::LookupGroupName(gid, name)) {
474       StreamString response;
475       response.PutCStringAsRawHex8(name.c_str());
476       return SendPacketNoLock(response.GetString());
477     }
478   }
479 #endif
480   return SendErrorResponse(6);
481 }
482 
483 GDBRemoteCommunication::PacketResult
484 GDBRemoteCommunicationServerCommon::Handle_qSpeedTest(
485     StringExtractorGDBRemote &packet) {
486   packet.SetFilePos(::strlen("qSpeedTest:"));
487 
488   llvm::StringRef key;
489   llvm::StringRef value;
490   bool success = packet.GetNameColonValue(key, value);
491   if (success && key.equals("response_size")) {
492     uint32_t response_size = 0;
493     if (!value.getAsInteger(0, response_size)) {
494       if (response_size == 0)
495         return SendOKResponse();
496       StreamString response;
497       uint32_t bytes_left = response_size;
498       response.PutCString("data:");
499       while (bytes_left > 0) {
500         if (bytes_left >= 26) {
501           response.PutCString("ABCDEFGHIJKLMNOPQRSTUVWXYZ");
502           bytes_left -= 26;
503         } else {
504           response.Printf("%*.*s;", bytes_left, bytes_left,
505                           "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
506           bytes_left = 0;
507         }
508       }
509       return SendPacketNoLock(response.GetString());
510     }
511   }
512   return SendErrorResponse(7);
513 }
514 
515 GDBRemoteCommunication::PacketResult
516 GDBRemoteCommunicationServerCommon::Handle_vFile_Open(
517     StringExtractorGDBRemote &packet) {
518   packet.SetFilePos(::strlen("vFile:open:"));
519   std::string path;
520   packet.GetHexByteStringTerminatedBy(path, ',');
521   if (!path.empty()) {
522     if (packet.GetChar() == ',') {
523       uint32_t flags =
524           File::ConvertOpenOptionsForPOSIXOpen(packet.GetHexMaxU32(false, 0));
525       if (packet.GetChar() == ',') {
526         mode_t mode = packet.GetHexMaxU32(false, 0600);
527         Error error;
528         const FileSpec path_spec{path, true};
529         int fd = ::open(path_spec.GetCString(), flags, mode);
530         const int save_errno = fd == -1 ? errno : 0;
531         StreamString response;
532         response.PutChar('F');
533         response.Printf("%i", fd);
534         if (save_errno)
535           response.Printf(",%i", save_errno);
536         return SendPacketNoLock(response.GetString());
537       }
538     }
539   }
540   return SendErrorResponse(18);
541 }
542 
543 GDBRemoteCommunication::PacketResult
544 GDBRemoteCommunicationServerCommon::Handle_vFile_Close(
545     StringExtractorGDBRemote &packet) {
546   packet.SetFilePos(::strlen("vFile:close:"));
547   int fd = packet.GetS32(-1);
548   Error error;
549   int err = -1;
550   int save_errno = 0;
551   if (fd >= 0) {
552     err = close(fd);
553     save_errno = err == -1 ? errno : 0;
554   } else {
555     save_errno = EINVAL;
556   }
557   StreamString response;
558   response.PutChar('F');
559   response.Printf("%i", err);
560   if (save_errno)
561     response.Printf(",%i", save_errno);
562   return SendPacketNoLock(response.GetString());
563 }
564 
565 GDBRemoteCommunication::PacketResult
566 GDBRemoteCommunicationServerCommon::Handle_vFile_pRead(
567     StringExtractorGDBRemote &packet) {
568 #ifdef _WIN32
569   // Not implemented on Windows
570   return SendUnimplementedResponse(
571       "GDBRemoteCommunicationServerCommon::Handle_vFile_pRead() unimplemented");
572 #else
573   StreamGDBRemote response;
574   packet.SetFilePos(::strlen("vFile:pread:"));
575   int fd = packet.GetS32(-1);
576   if (packet.GetChar() == ',') {
577     uint64_t count = packet.GetU64(UINT64_MAX);
578     if (packet.GetChar() == ',') {
579       uint64_t offset = packet.GetU64(UINT32_MAX);
580       if (count == UINT64_MAX) {
581         response.Printf("F-1:%i", EINVAL);
582         return SendPacketNoLock(response.GetString());
583       }
584 
585       std::string buffer(count, 0);
586       const ssize_t bytes_read = ::pread(fd, &buffer[0], buffer.size(), offset);
587       const int save_errno = bytes_read == -1 ? errno : 0;
588       response.PutChar('F');
589       response.Printf("%zi", bytes_read);
590       if (save_errno)
591         response.Printf(",%i", save_errno);
592       else {
593         response.PutChar(';');
594         response.PutEscapedBytes(&buffer[0], bytes_read);
595       }
596       return SendPacketNoLock(response.GetString());
597     }
598   }
599   return SendErrorResponse(21);
600 
601 #endif
602 }
603 
604 GDBRemoteCommunication::PacketResult
605 GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite(
606     StringExtractorGDBRemote &packet) {
607 #ifdef _WIN32
608   return SendUnimplementedResponse("GDBRemoteCommunicationServerCommon::Handle_"
609                                    "vFile_pWrite() unimplemented");
610 #else
611   packet.SetFilePos(::strlen("vFile:pwrite:"));
612 
613   StreamGDBRemote response;
614   response.PutChar('F');
615 
616   int fd = packet.GetU32(UINT32_MAX);
617   if (packet.GetChar() == ',') {
618     off_t offset = packet.GetU64(UINT32_MAX);
619     if (packet.GetChar() == ',') {
620       std::string buffer;
621       if (packet.GetEscapedBinaryData(buffer)) {
622         const ssize_t bytes_written =
623             ::pwrite(fd, buffer.data(), buffer.size(), offset);
624         const int save_errno = bytes_written == -1 ? errno : 0;
625         response.Printf("%zi", bytes_written);
626         if (save_errno)
627           response.Printf(",%i", save_errno);
628       } else {
629         response.Printf("-1,%i", EINVAL);
630       }
631       return SendPacketNoLock(response.GetString());
632     }
633   }
634   return SendErrorResponse(27);
635 #endif
636 }
637 
638 GDBRemoteCommunication::PacketResult
639 GDBRemoteCommunicationServerCommon::Handle_vFile_Size(
640     StringExtractorGDBRemote &packet) {
641   packet.SetFilePos(::strlen("vFile:size:"));
642   std::string path;
643   packet.GetHexByteString(path);
644   if (!path.empty()) {
645     uint64_t Size;
646     if (llvm::sys::fs::file_size(path, Size))
647       return SendErrorResponse(5);
648     StreamString response;
649     response.PutChar('F');
650     response.PutHex64(Size);
651     if (Size == UINT64_MAX) {
652       response.PutChar(',');
653       response.PutHex64(Size); // TODO: replace with Host::GetSyswideErrorCode()
654     }
655     return SendPacketNoLock(response.GetString());
656   }
657   return SendErrorResponse(22);
658 }
659 
660 GDBRemoteCommunication::PacketResult
661 GDBRemoteCommunicationServerCommon::Handle_vFile_Mode(
662     StringExtractorGDBRemote &packet) {
663   packet.SetFilePos(::strlen("vFile:mode:"));
664   std::string path;
665   packet.GetHexByteString(path);
666   if (!path.empty()) {
667     Error error;
668     const uint32_t mode = File::GetPermissions(FileSpec{path, true}, error);
669     StreamString response;
670     response.Printf("F%u", mode);
671     if (mode == 0 || error.Fail())
672       response.Printf(",%i", (int)error.GetError());
673     return SendPacketNoLock(response.GetString());
674   }
675   return SendErrorResponse(23);
676 }
677 
678 GDBRemoteCommunication::PacketResult
679 GDBRemoteCommunicationServerCommon::Handle_vFile_Exists(
680     StringExtractorGDBRemote &packet) {
681   packet.SetFilePos(::strlen("vFile:exists:"));
682   std::string path;
683   packet.GetHexByteString(path);
684   if (!path.empty()) {
685     bool retcode = llvm::sys::fs::exists(path);
686     StreamString response;
687     response.PutChar('F');
688     response.PutChar(',');
689     if (retcode)
690       response.PutChar('1');
691     else
692       response.PutChar('0');
693     return SendPacketNoLock(response.GetString());
694   }
695   return SendErrorResponse(24);
696 }
697 
698 GDBRemoteCommunication::PacketResult
699 GDBRemoteCommunicationServerCommon::Handle_vFile_symlink(
700     StringExtractorGDBRemote &packet) {
701   packet.SetFilePos(::strlen("vFile:symlink:"));
702   std::string dst, src;
703   packet.GetHexByteStringTerminatedBy(dst, ',');
704   packet.GetChar(); // Skip ',' char
705   packet.GetHexByteString(src);
706   Error error = FileSystem::Symlink(FileSpec{src, true}, FileSpec{dst, false});
707   StreamString response;
708   response.Printf("F%u,%u", error.GetError(), error.GetError());
709   return SendPacketNoLock(response.GetString());
710 }
711 
712 GDBRemoteCommunication::PacketResult
713 GDBRemoteCommunicationServerCommon::Handle_vFile_unlink(
714     StringExtractorGDBRemote &packet) {
715   packet.SetFilePos(::strlen("vFile:unlink:"));
716   std::string path;
717   packet.GetHexByteString(path);
718   Error error(llvm::sys::fs::remove(path));
719   StreamString response;
720   response.Printf("F%u,%u", error.GetError(), error.GetError());
721   return SendPacketNoLock(response.GetString());
722 }
723 
724 GDBRemoteCommunication::PacketResult
725 GDBRemoteCommunicationServerCommon::Handle_qPlatform_shell(
726     StringExtractorGDBRemote &packet) {
727   packet.SetFilePos(::strlen("qPlatform_shell:"));
728   std::string path;
729   std::string working_dir;
730   packet.GetHexByteStringTerminatedBy(path, ',');
731   if (!path.empty()) {
732     if (packet.GetChar() == ',') {
733       // FIXME: add timeout to qPlatform_shell packet
734       // uint32_t timeout = packet.GetHexMaxU32(false, 32);
735       uint32_t timeout = 10;
736       if (packet.GetChar() == ',')
737         packet.GetHexByteString(working_dir);
738       int status, signo;
739       std::string output;
740       Error err =
741           Host::RunShellCommand(path.c_str(), FileSpec{working_dir, true},
742                                 &status, &signo, &output, timeout);
743       StreamGDBRemote response;
744       if (err.Fail()) {
745         response.PutCString("F,");
746         response.PutHex32(UINT32_MAX);
747       } else {
748         response.PutCString("F,");
749         response.PutHex32(status);
750         response.PutChar(',');
751         response.PutHex32(signo);
752         response.PutChar(',');
753         response.PutEscapedBytes(output.c_str(), output.size());
754       }
755       return SendPacketNoLock(response.GetString());
756     }
757   }
758   return SendErrorResponse(24);
759 }
760 
761 GDBRemoteCommunication::PacketResult
762 GDBRemoteCommunicationServerCommon::Handle_vFile_Stat(
763     StringExtractorGDBRemote &packet) {
764   return SendUnimplementedResponse(
765       "GDBRemoteCommunicationServerCommon::Handle_vFile_Stat() unimplemented");
766 }
767 
768 GDBRemoteCommunication::PacketResult
769 GDBRemoteCommunicationServerCommon::Handle_vFile_MD5(
770     StringExtractorGDBRemote &packet) {
771   packet.SetFilePos(::strlen("vFile:MD5:"));
772   std::string path;
773   packet.GetHexByteString(path);
774   if (!path.empty()) {
775     uint64_t a, b;
776     StreamGDBRemote response;
777     auto Result = llvm::sys::fs::md5_contents(path);
778     if (!Result) {
779       response.PutCString("F,");
780       response.PutCString("x");
781     } else {
782       response.PutCString("F,");
783       response.PutHex64(Result->low());
784       response.PutHex64(Result->high());
785     }
786     return SendPacketNoLock(response.GetString());
787   }
788   return SendErrorResponse(25);
789 }
790 
791 GDBRemoteCommunication::PacketResult
792 GDBRemoteCommunicationServerCommon::Handle_qPlatform_mkdir(
793     StringExtractorGDBRemote &packet) {
794   packet.SetFilePos(::strlen("qPlatform_mkdir:"));
795   mode_t mode = packet.GetHexMaxU32(false, UINT32_MAX);
796   if (packet.GetChar() == ',') {
797     std::string path;
798     packet.GetHexByteString(path);
799     Error error(llvm::sys::fs::create_directory(path, mode));
800 
801     StreamGDBRemote response;
802     response.Printf("F%u", error.GetError());
803 
804     return SendPacketNoLock(response.GetString());
805   }
806   return SendErrorResponse(20);
807 }
808 
809 GDBRemoteCommunication::PacketResult
810 GDBRemoteCommunicationServerCommon::Handle_qPlatform_chmod(
811     StringExtractorGDBRemote &packet) {
812   packet.SetFilePos(::strlen("qPlatform_chmod:"));
813 
814   auto perms =
815       static_cast<llvm::sys::fs::perms>(packet.GetHexMaxU32(false, UINT32_MAX));
816   if (packet.GetChar() == ',') {
817     std::string path;
818     packet.GetHexByteString(path);
819     Error error(llvm::sys::fs::setPermissions(path, perms));
820 
821     StreamGDBRemote response;
822     response.Printf("F%u", error.GetError());
823 
824     return SendPacketNoLock(response.GetString());
825   }
826   return SendErrorResponse(19);
827 }
828 
829 GDBRemoteCommunication::PacketResult
830 GDBRemoteCommunicationServerCommon::Handle_qSupported(
831     StringExtractorGDBRemote &packet) {
832   StreamGDBRemote response;
833 
834   // Features common to lldb-platform and llgs.
835   uint32_t max_packet_size = 128 * 1024; // 128KBytes is a reasonable max packet
836                                          // size--debugger can always use less
837   response.Printf("PacketSize=%x", max_packet_size);
838 
839   response.PutCString(";QStartNoAckMode+");
840   response.PutCString(";QThreadSuffixSupported+");
841   response.PutCString(";QListThreadsInStopReply+");
842   response.PutCString(";qEcho+");
843 #if defined(__linux__)
844   response.PutCString(";QPassSignals+");
845   response.PutCString(";qXfer:auxv:read+");
846 #endif
847 
848   return SendPacketNoLock(response.GetString());
849 }
850 
851 GDBRemoteCommunication::PacketResult
852 GDBRemoteCommunicationServerCommon::Handle_QThreadSuffixSupported(
853     StringExtractorGDBRemote &packet) {
854   m_thread_suffix_supported = true;
855   return SendOKResponse();
856 }
857 
858 GDBRemoteCommunication::PacketResult
859 GDBRemoteCommunicationServerCommon::Handle_QListThreadsInStopReply(
860     StringExtractorGDBRemote &packet) {
861   m_list_threads_in_stop_reply = true;
862   return SendOKResponse();
863 }
864 
865 GDBRemoteCommunication::PacketResult
866 GDBRemoteCommunicationServerCommon::Handle_QSetDetachOnError(
867     StringExtractorGDBRemote &packet) {
868   packet.SetFilePos(::strlen("QSetDetachOnError:"));
869   if (packet.GetU32(0))
870     m_process_launch_info.GetFlags().Set(eLaunchFlagDetachOnError);
871   else
872     m_process_launch_info.GetFlags().Clear(eLaunchFlagDetachOnError);
873   return SendOKResponse();
874 }
875 
876 GDBRemoteCommunication::PacketResult
877 GDBRemoteCommunicationServerCommon::Handle_QStartNoAckMode(
878     StringExtractorGDBRemote &packet) {
879   // Send response first before changing m_send_acks to we ack this packet
880   PacketResult packet_result = SendOKResponse();
881   m_send_acks = false;
882   return packet_result;
883 }
884 
885 GDBRemoteCommunication::PacketResult
886 GDBRemoteCommunicationServerCommon::Handle_QSetSTDIN(
887     StringExtractorGDBRemote &packet) {
888   packet.SetFilePos(::strlen("QSetSTDIN:"));
889   FileAction file_action;
890   std::string path;
891   packet.GetHexByteString(path);
892   const bool read = true;
893   const bool write = false;
894   if (file_action.Open(STDIN_FILENO, FileSpec{path, false}, read, write)) {
895     m_process_launch_info.AppendFileAction(file_action);
896     return SendOKResponse();
897   }
898   return SendErrorResponse(15);
899 }
900 
901 GDBRemoteCommunication::PacketResult
902 GDBRemoteCommunicationServerCommon::Handle_QSetSTDOUT(
903     StringExtractorGDBRemote &packet) {
904   packet.SetFilePos(::strlen("QSetSTDOUT:"));
905   FileAction file_action;
906   std::string path;
907   packet.GetHexByteString(path);
908   const bool read = false;
909   const bool write = true;
910   if (file_action.Open(STDOUT_FILENO, FileSpec{path, false}, read, write)) {
911     m_process_launch_info.AppendFileAction(file_action);
912     return SendOKResponse();
913   }
914   return SendErrorResponse(16);
915 }
916 
917 GDBRemoteCommunication::PacketResult
918 GDBRemoteCommunicationServerCommon::Handle_QSetSTDERR(
919     StringExtractorGDBRemote &packet) {
920   packet.SetFilePos(::strlen("QSetSTDERR:"));
921   FileAction file_action;
922   std::string path;
923   packet.GetHexByteString(path);
924   const bool read = false;
925   const bool write = true;
926   if (file_action.Open(STDERR_FILENO, FileSpec{path, false}, read, write)) {
927     m_process_launch_info.AppendFileAction(file_action);
928     return SendOKResponse();
929   }
930   return SendErrorResponse(17);
931 }
932 
933 GDBRemoteCommunication::PacketResult
934 GDBRemoteCommunicationServerCommon::Handle_qLaunchSuccess(
935     StringExtractorGDBRemote &packet) {
936   if (m_process_launch_error.Success())
937     return SendOKResponse();
938   StreamString response;
939   response.PutChar('E');
940   response.PutCString(m_process_launch_error.AsCString("<unknown error>"));
941   return SendPacketNoLock(response.GetString());
942 }
943 
944 GDBRemoteCommunication::PacketResult
945 GDBRemoteCommunicationServerCommon::Handle_QEnvironment(
946     StringExtractorGDBRemote &packet) {
947   packet.SetFilePos(::strlen("QEnvironment:"));
948   const uint32_t bytes_left = packet.GetBytesLeft();
949   if (bytes_left > 0) {
950     m_process_launch_info.GetEnvironmentEntries().AppendArgument(
951         llvm::StringRef::withNullAsEmpty(packet.Peek()));
952     return SendOKResponse();
953   }
954   return SendErrorResponse(12);
955 }
956 
957 GDBRemoteCommunication::PacketResult
958 GDBRemoteCommunicationServerCommon::Handle_QEnvironmentHexEncoded(
959     StringExtractorGDBRemote &packet) {
960   packet.SetFilePos(::strlen("QEnvironmentHexEncoded:"));
961   const uint32_t bytes_left = packet.GetBytesLeft();
962   if (bytes_left > 0) {
963     std::string str;
964     packet.GetHexByteString(str);
965     m_process_launch_info.GetEnvironmentEntries().AppendArgument(str);
966     return SendOKResponse();
967   }
968   return SendErrorResponse(12);
969 }
970 
971 GDBRemoteCommunication::PacketResult
972 GDBRemoteCommunicationServerCommon::Handle_QLaunchArch(
973     StringExtractorGDBRemote &packet) {
974   packet.SetFilePos(::strlen("QLaunchArch:"));
975   const uint32_t bytes_left = packet.GetBytesLeft();
976   if (bytes_left > 0) {
977     const char *arch_triple = packet.Peek();
978     ArchSpec arch_spec(arch_triple, NULL);
979     m_process_launch_info.SetArchitecture(arch_spec);
980     return SendOKResponse();
981   }
982   return SendErrorResponse(13);
983 }
984 
985 GDBRemoteCommunication::PacketResult
986 GDBRemoteCommunicationServerCommon::Handle_A(StringExtractorGDBRemote &packet) {
987   // The 'A' packet is the most over designed packet ever here with
988   // redundant argument indexes, redundant argument lengths and needed hex
989   // encoded argument string values. Really all that is needed is a comma
990   // separated hex encoded argument value list, but we will stay true to the
991   // documented version of the 'A' packet here...
992 
993   Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
994   int actual_arg_index = 0;
995 
996   packet.SetFilePos(1); // Skip the 'A'
997   bool success = true;
998   while (success && packet.GetBytesLeft() > 0) {
999     // Decode the decimal argument string length. This length is the
1000     // number of hex nibbles in the argument string value.
1001     const uint32_t arg_len = packet.GetU32(UINT32_MAX);
1002     if (arg_len == UINT32_MAX)
1003       success = false;
1004     else {
1005       // Make sure the argument hex string length is followed by a comma
1006       if (packet.GetChar() != ',')
1007         success = false;
1008       else {
1009         // Decode the argument index. We ignore this really because
1010         // who would really send down the arguments in a random order???
1011         const uint32_t arg_idx = packet.GetU32(UINT32_MAX);
1012         if (arg_idx == UINT32_MAX)
1013           success = false;
1014         else {
1015           // Make sure the argument index is followed by a comma
1016           if (packet.GetChar() != ',')
1017             success = false;
1018           else {
1019             // Decode the argument string value from hex bytes
1020             // back into a UTF8 string and make sure the length
1021             // matches the one supplied in the packet
1022             std::string arg;
1023             if (packet.GetHexByteStringFixedLength(arg, arg_len) !=
1024                 (arg_len / 2))
1025               success = false;
1026             else {
1027               // If there are any bytes left
1028               if (packet.GetBytesLeft()) {
1029                 if (packet.GetChar() != ',')
1030                   success = false;
1031               }
1032 
1033               if (success) {
1034                 if (arg_idx == 0)
1035                   m_process_launch_info.GetExecutableFile().SetFile(arg, false);
1036                 m_process_launch_info.GetArguments().AppendArgument(arg);
1037                 if (log)
1038                   log->Printf("LLGSPacketHandler::%s added arg %d: \"%s\"",
1039                               __FUNCTION__, actual_arg_index, arg.c_str());
1040                 ++actual_arg_index;
1041               }
1042             }
1043           }
1044         }
1045       }
1046     }
1047   }
1048 
1049   if (success) {
1050     m_process_launch_error = LaunchProcess();
1051     if (m_process_launch_info.GetProcessID() != LLDB_INVALID_PROCESS_ID) {
1052       return SendOKResponse();
1053     } else {
1054       Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
1055       if (log)
1056         log->Printf("LLGSPacketHandler::%s failed to launch exe: %s",
1057                     __FUNCTION__, m_process_launch_error.AsCString());
1058     }
1059   }
1060   return SendErrorResponse(8);
1061 }
1062 
1063 GDBRemoteCommunication::PacketResult
1064 GDBRemoteCommunicationServerCommon::Handle_qEcho(
1065     StringExtractorGDBRemote &packet) {
1066   // Just echo back the exact same packet for qEcho...
1067   return SendPacketNoLock(packet.GetStringRef());
1068 }
1069 
1070 GDBRemoteCommunication::PacketResult
1071 GDBRemoteCommunicationServerCommon::Handle_qModuleInfo(
1072     StringExtractorGDBRemote &packet) {
1073   packet.SetFilePos(::strlen("qModuleInfo:"));
1074 
1075   std::string module_path;
1076   packet.GetHexByteStringTerminatedBy(module_path, ';');
1077   if (module_path.empty())
1078     return SendErrorResponse(1);
1079 
1080   if (packet.GetChar() != ';')
1081     return SendErrorResponse(2);
1082 
1083   std::string triple;
1084   packet.GetHexByteString(triple);
1085 
1086   ModuleSpec matched_module_spec = GetModuleInfo(module_path, triple);
1087   if (!matched_module_spec.GetFileSpec())
1088     return SendErrorResponse(3);
1089 
1090   const auto file_offset = matched_module_spec.GetObjectOffset();
1091   const auto file_size = matched_module_spec.GetObjectSize();
1092   const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
1093 
1094   StreamGDBRemote response;
1095 
1096   if (uuid_str.empty()) {
1097     auto Result = llvm::sys::fs::md5_contents(matched_module_spec.GetFileSpec().GetPath());
1098     if (!Result)
1099       return SendErrorResponse(5);
1100     response.PutCString("md5:");
1101     response.PutCStringAsRawHex8(Result->digest().c_str());
1102   } else {
1103     response.PutCString("uuid:");
1104     response.PutCStringAsRawHex8(uuid_str.c_str());
1105   }
1106   response.PutChar(';');
1107 
1108   const auto &module_arch = matched_module_spec.GetArchitecture();
1109   response.PutCString("triple:");
1110   response.PutCStringAsRawHex8(module_arch.GetTriple().getTriple().c_str());
1111   response.PutChar(';');
1112 
1113   response.PutCString("file_path:");
1114   response.PutCStringAsRawHex8(matched_module_spec.GetFileSpec().GetCString());
1115   response.PutChar(';');
1116   response.PutCString("file_offset:");
1117   response.PutHex64(file_offset);
1118   response.PutChar(';');
1119   response.PutCString("file_size:");
1120   response.PutHex64(file_size);
1121   response.PutChar(';');
1122 
1123   return SendPacketNoLock(response.GetString());
1124 }
1125 
1126 GDBRemoteCommunication::PacketResult
1127 GDBRemoteCommunicationServerCommon::Handle_jModulesInfo(
1128     StringExtractorGDBRemote &packet) {
1129   packet.SetFilePos(::strlen("jModulesInfo:"));
1130 
1131   StructuredData::ObjectSP object_sp = StructuredData::ParseJSON(packet.Peek());
1132   if (!object_sp)
1133     return SendErrorResponse(1);
1134 
1135   StructuredData::Array *packet_array = object_sp->GetAsArray();
1136   if (!packet_array)
1137     return SendErrorResponse(2);
1138 
1139   JSONArray::SP response_array_sp = std::make_shared<JSONArray>();
1140   for (size_t i = 0; i < packet_array->GetSize(); ++i) {
1141     StructuredData::Dictionary *query =
1142         packet_array->GetItemAtIndex(i)->GetAsDictionary();
1143     if (!query)
1144       continue;
1145     std::string file, triple;
1146     if (!query->GetValueForKeyAsString("file", file) ||
1147         !query->GetValueForKeyAsString("triple", triple))
1148       continue;
1149 
1150     ModuleSpec matched_module_spec = GetModuleInfo(file, triple);
1151     if (!matched_module_spec.GetFileSpec())
1152       continue;
1153 
1154     const auto file_offset = matched_module_spec.GetObjectOffset();
1155     const auto file_size = matched_module_spec.GetObjectSize();
1156     const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
1157 
1158     if (uuid_str.empty())
1159       continue;
1160 
1161     JSONObject::SP response = std::make_shared<JSONObject>();
1162     response_array_sp->AppendObject(response);
1163     response->SetObject("uuid", std::make_shared<JSONString>(uuid_str));
1164     response->SetObject(
1165         "triple",
1166         std::make_shared<JSONString>(
1167             matched_module_spec.GetArchitecture().GetTriple().getTriple()));
1168     response->SetObject("file_path",
1169                         std::make_shared<JSONString>(
1170                             matched_module_spec.GetFileSpec().GetPath()));
1171     response->SetObject("file_offset",
1172                         std::make_shared<JSONNumber>(file_offset));
1173     response->SetObject("file_size", std::make_shared<JSONNumber>(file_size));
1174   }
1175 
1176   StreamString response;
1177   response_array_sp->Write(response);
1178   StreamGDBRemote escaped_response;
1179   escaped_response.PutEscapedBytes(response.GetString().data(),
1180                                    response.GetSize());
1181   return SendPacketNoLock(escaped_response.GetString());
1182 }
1183 
1184 void GDBRemoteCommunicationServerCommon::CreateProcessInfoResponse(
1185     const ProcessInstanceInfo &proc_info, StreamString &response) {
1186   response.Printf(
1187       "pid:%" PRIu64 ";ppid:%" PRIu64 ";uid:%i;gid:%i;euid:%i;egid:%i;",
1188       proc_info.GetProcessID(), proc_info.GetParentProcessID(),
1189       proc_info.GetUserID(), proc_info.GetGroupID(),
1190       proc_info.GetEffectiveUserID(), proc_info.GetEffectiveGroupID());
1191   response.PutCString("name:");
1192   response.PutCStringAsRawHex8(proc_info.GetExecutableFile().GetCString());
1193   response.PutChar(';');
1194   const ArchSpec &proc_arch = proc_info.GetArchitecture();
1195   if (proc_arch.IsValid()) {
1196     const llvm::Triple &proc_triple = proc_arch.GetTriple();
1197     response.PutCString("triple:");
1198     response.PutCStringAsRawHex8(proc_triple.getTriple().c_str());
1199     response.PutChar(';');
1200   }
1201 }
1202 
1203 void GDBRemoteCommunicationServerCommon::
1204     CreateProcessInfoResponse_DebugServerStyle(
1205         const ProcessInstanceInfo &proc_info, StreamString &response) {
1206   response.Printf("pid:%" PRIx64 ";parent-pid:%" PRIx64
1207                   ";real-uid:%x;real-gid:%x;effective-uid:%x;effective-gid:%x;",
1208                   proc_info.GetProcessID(), proc_info.GetParentProcessID(),
1209                   proc_info.GetUserID(), proc_info.GetGroupID(),
1210                   proc_info.GetEffectiveUserID(),
1211                   proc_info.GetEffectiveGroupID());
1212 
1213   const ArchSpec &proc_arch = proc_info.GetArchitecture();
1214   if (proc_arch.IsValid()) {
1215     const llvm::Triple &proc_triple = proc_arch.GetTriple();
1216 #if defined(__APPLE__)
1217     // We'll send cputype/cpusubtype.
1218     const uint32_t cpu_type = proc_arch.GetMachOCPUType();
1219     if (cpu_type != 0)
1220       response.Printf("cputype:%" PRIx32 ";", cpu_type);
1221 
1222     const uint32_t cpu_subtype = proc_arch.GetMachOCPUSubType();
1223     if (cpu_subtype != 0)
1224       response.Printf("cpusubtype:%" PRIx32 ";", cpu_subtype);
1225 
1226     const std::string vendor = proc_triple.getVendorName();
1227     if (!vendor.empty())
1228       response.Printf("vendor:%s;", vendor.c_str());
1229 #else
1230     // We'll send the triple.
1231     response.PutCString("triple:");
1232     response.PutCStringAsRawHex8(proc_triple.getTriple().c_str());
1233     response.PutChar(';');
1234 #endif
1235     std::string ostype = proc_triple.getOSName();
1236     // Adjust so ostype reports ios for Apple/ARM and Apple/ARM64.
1237     if (proc_triple.getVendor() == llvm::Triple::Apple) {
1238       switch (proc_triple.getArch()) {
1239       case llvm::Triple::arm:
1240       case llvm::Triple::thumb:
1241       case llvm::Triple::aarch64:
1242         ostype = "ios";
1243         break;
1244       default:
1245         // No change.
1246         break;
1247       }
1248     }
1249     response.Printf("ostype:%s;", ostype.c_str());
1250 
1251     switch (proc_arch.GetByteOrder()) {
1252     case lldb::eByteOrderLittle:
1253       response.PutCString("endian:little;");
1254       break;
1255     case lldb::eByteOrderBig:
1256       response.PutCString("endian:big;");
1257       break;
1258     case lldb::eByteOrderPDP:
1259       response.PutCString("endian:pdp;");
1260       break;
1261     default:
1262       // Nothing.
1263       break;
1264     }
1265     // In case of MIPS64, pointer size is depend on ELF ABI
1266     // For N32 the pointer size is 4 and for N64 it is 8
1267     std::string abi = proc_arch.GetTargetABI();
1268     if (!abi.empty())
1269       response.Printf("elf_abi:%s;", abi.c_str());
1270     response.Printf("ptrsize:%d;", proc_arch.GetAddressByteSize());
1271   }
1272 }
1273 
1274 FileSpec GDBRemoteCommunicationServerCommon::FindModuleFile(
1275     const std::string &module_path, const ArchSpec &arch) {
1276 #ifdef __ANDROID__
1277   return HostInfoAndroid::ResolveLibraryPath(module_path, arch);
1278 #else
1279   return FileSpec(module_path, true);
1280 #endif
1281 }
1282 
1283 ModuleSpec GDBRemoteCommunicationServerCommon::GetModuleInfo(
1284     const std::string &module_path, const std::string &triple) {
1285   ArchSpec arch(triple.c_str());
1286 
1287   const FileSpec req_module_path_spec(module_path, true);
1288   const FileSpec module_path_spec =
1289       FindModuleFile(req_module_path_spec.GetPath(), arch);
1290   const ModuleSpec module_spec(module_path_spec, arch);
1291 
1292   ModuleSpecList module_specs;
1293   if (!ObjectFile::GetModuleSpecifications(module_path_spec, 0, 0,
1294                                            module_specs))
1295     return ModuleSpec();
1296 
1297   ModuleSpec matched_module_spec;
1298   if (!module_specs.FindMatchingModuleSpec(module_spec, matched_module_spec))
1299     return ModuleSpec();
1300 
1301   return matched_module_spec;
1302 }
1303