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, 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         FileSpec path_spec(path);
524         FileSystem::Instance().Resolve(path_spec);
525         int fd = ::open(path_spec.GetCString(), flags, mode);
526         const int save_errno = fd == -1 ? errno : 0;
527         StreamString response;
528         response.PutChar('F');
529         response.Printf("%i", fd);
530         if (save_errno)
531           response.Printf(",%i", save_errno);
532         return SendPacketNoLock(response.GetString());
533       }
534     }
535   }
536   return SendErrorResponse(18);
537 }
538 
539 GDBRemoteCommunication::PacketResult
540 GDBRemoteCommunicationServerCommon::Handle_vFile_Close(
541     StringExtractorGDBRemote &packet) {
542   packet.SetFilePos(::strlen("vFile:close:"));
543   int fd = packet.GetS32(-1);
544   Status error;
545   int err = -1;
546   int save_errno = 0;
547   if (fd >= 0) {
548     err = close(fd);
549     save_errno = err == -1 ? errno : 0;
550   } else {
551     save_errno = EINVAL;
552   }
553   StreamString response;
554   response.PutChar('F');
555   response.Printf("%i", err);
556   if (save_errno)
557     response.Printf(",%i", save_errno);
558   return SendPacketNoLock(response.GetString());
559 }
560 
561 GDBRemoteCommunication::PacketResult
562 GDBRemoteCommunicationServerCommon::Handle_vFile_pRead(
563     StringExtractorGDBRemote &packet) {
564 #ifdef _WIN32
565   // Not implemented on Windows
566   return SendUnimplementedResponse(
567       "GDBRemoteCommunicationServerCommon::Handle_vFile_pRead() unimplemented");
568 #else
569   StreamGDBRemote response;
570   packet.SetFilePos(::strlen("vFile:pread:"));
571   int fd = packet.GetS32(-1);
572   if (packet.GetChar() == ',') {
573     uint64_t count = packet.GetU64(UINT64_MAX);
574     if (packet.GetChar() == ',') {
575       uint64_t offset = packet.GetU64(UINT32_MAX);
576       if (count == UINT64_MAX) {
577         response.Printf("F-1:%i", EINVAL);
578         return SendPacketNoLock(response.GetString());
579       }
580 
581       std::string buffer(count, 0);
582       const ssize_t bytes_read = ::pread(fd, &buffer[0], buffer.size(), offset);
583       const int save_errno = bytes_read == -1 ? errno : 0;
584       response.PutChar('F');
585       response.Printf("%zi", bytes_read);
586       if (save_errno)
587         response.Printf(",%i", save_errno);
588       else {
589         response.PutChar(';');
590         response.PutEscapedBytes(&buffer[0], bytes_read);
591       }
592       return SendPacketNoLock(response.GetString());
593     }
594   }
595   return SendErrorResponse(21);
596 
597 #endif
598 }
599 
600 GDBRemoteCommunication::PacketResult
601 GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite(
602     StringExtractorGDBRemote &packet) {
603 #ifdef _WIN32
604   return SendUnimplementedResponse("GDBRemoteCommunicationServerCommon::Handle_"
605                                    "vFile_pWrite() unimplemented");
606 #else
607   packet.SetFilePos(::strlen("vFile:pwrite:"));
608 
609   StreamGDBRemote response;
610   response.PutChar('F');
611 
612   int fd = packet.GetU32(UINT32_MAX);
613   if (packet.GetChar() == ',') {
614     off_t offset = packet.GetU64(UINT32_MAX);
615     if (packet.GetChar() == ',') {
616       std::string buffer;
617       if (packet.GetEscapedBinaryData(buffer)) {
618         const ssize_t bytes_written =
619             ::pwrite(fd, buffer.data(), buffer.size(), offset);
620         const int save_errno = bytes_written == -1 ? errno : 0;
621         response.Printf("%zi", bytes_written);
622         if (save_errno)
623           response.Printf(",%i", save_errno);
624       } else {
625         response.Printf("-1,%i", EINVAL);
626       }
627       return SendPacketNoLock(response.GetString());
628     }
629   }
630   return SendErrorResponse(27);
631 #endif
632 }
633 
634 GDBRemoteCommunication::PacketResult
635 GDBRemoteCommunicationServerCommon::Handle_vFile_Size(
636     StringExtractorGDBRemote &packet) {
637   packet.SetFilePos(::strlen("vFile:size:"));
638   std::string path;
639   packet.GetHexByteString(path);
640   if (!path.empty()) {
641     uint64_t Size;
642     if (llvm::sys::fs::file_size(path, Size))
643       return SendErrorResponse(5);
644     StreamString response;
645     response.PutChar('F');
646     response.PutHex64(Size);
647     if (Size == UINT64_MAX) {
648       response.PutChar(',');
649       response.PutHex64(Size); // TODO: replace with Host::GetSyswideErrorCode()
650     }
651     return SendPacketNoLock(response.GetString());
652   }
653   return SendErrorResponse(22);
654 }
655 
656 GDBRemoteCommunication::PacketResult
657 GDBRemoteCommunicationServerCommon::Handle_vFile_Mode(
658     StringExtractorGDBRemote &packet) {
659   packet.SetFilePos(::strlen("vFile:mode:"));
660   std::string path;
661   packet.GetHexByteString(path);
662   if (!path.empty()) {
663     FileSpec file_spec(path);
664     FileSystem::Instance().Resolve(file_spec);
665     std::error_code ec;
666     const uint32_t mode = FileSystem::Instance().GetPermissions(file_spec, ec);
667     StreamString response;
668     response.Printf("F%u", mode);
669     if (mode == 0 || ec)
670       response.Printf(",%i", (int)Status(ec).GetError());
671     return SendPacketNoLock(response.GetString());
672   }
673   return SendErrorResponse(23);
674 }
675 
676 GDBRemoteCommunication::PacketResult
677 GDBRemoteCommunicationServerCommon::Handle_vFile_Exists(
678     StringExtractorGDBRemote &packet) {
679   packet.SetFilePos(::strlen("vFile:exists:"));
680   std::string path;
681   packet.GetHexByteString(path);
682   if (!path.empty()) {
683     bool retcode = llvm::sys::fs::exists(path);
684     StreamString response;
685     response.PutChar('F');
686     response.PutChar(',');
687     if (retcode)
688       response.PutChar('1');
689     else
690       response.PutChar('0');
691     return SendPacketNoLock(response.GetString());
692   }
693   return SendErrorResponse(24);
694 }
695 
696 GDBRemoteCommunication::PacketResult
697 GDBRemoteCommunicationServerCommon::Handle_vFile_symlink(
698     StringExtractorGDBRemote &packet) {
699   packet.SetFilePos(::strlen("vFile:symlink:"));
700   std::string dst, src;
701   packet.GetHexByteStringTerminatedBy(dst, ',');
702   packet.GetChar(); // Skip ',' char
703   packet.GetHexByteString(src);
704 
705   FileSpec src_spec(src);
706   FileSystem::Instance().Resolve(src_spec);
707   Status error = FileSystem::Instance().Symlink(src_spec, FileSpec(dst));
708 
709   StreamString response;
710   response.Printf("F%u,%u", error.GetError(), error.GetError());
711   return SendPacketNoLock(response.GetString());
712 }
713 
714 GDBRemoteCommunication::PacketResult
715 GDBRemoteCommunicationServerCommon::Handle_vFile_unlink(
716     StringExtractorGDBRemote &packet) {
717   packet.SetFilePos(::strlen("vFile:unlink:"));
718   std::string path;
719   packet.GetHexByteString(path);
720   Status error(llvm::sys::fs::remove(path));
721   StreamString response;
722   response.Printf("F%u,%u", error.GetError(), error.GetError());
723   return SendPacketNoLock(response.GetString());
724 }
725 
726 GDBRemoteCommunication::PacketResult
727 GDBRemoteCommunicationServerCommon::Handle_qPlatform_shell(
728     StringExtractorGDBRemote &packet) {
729   packet.SetFilePos(::strlen("qPlatform_shell:"));
730   std::string path;
731   std::string working_dir;
732   packet.GetHexByteStringTerminatedBy(path, ',');
733   if (!path.empty()) {
734     if (packet.GetChar() == ',') {
735       // FIXME: add timeout to qPlatform_shell packet
736       // uint32_t timeout = packet.GetHexMaxU32(false, 32);
737       if (packet.GetChar() == ',')
738         packet.GetHexByteString(working_dir);
739       int status, signo;
740       std::string output;
741       FileSpec working_spec(working_dir);
742       FileSystem::Instance().Resolve(working_spec);
743       Status err =
744           Host::RunShellCommand(path.c_str(), working_spec, &status, &signo,
745                                 &output, std::chrono::seconds(10));
746       StreamGDBRemote response;
747       if (err.Fail()) {
748         response.PutCString("F,");
749         response.PutHex32(UINT32_MAX);
750       } else {
751         response.PutCString("F,");
752         response.PutHex32(status);
753         response.PutChar(',');
754         response.PutHex32(signo);
755         response.PutChar(',');
756         response.PutEscapedBytes(output.c_str(), output.size());
757       }
758       return SendPacketNoLock(response.GetString());
759     }
760   }
761   return SendErrorResponse(24);
762 }
763 
764 GDBRemoteCommunication::PacketResult
765 GDBRemoteCommunicationServerCommon::Handle_vFile_Stat(
766     StringExtractorGDBRemote &packet) {
767   return SendUnimplementedResponse(
768       "GDBRemoteCommunicationServerCommon::Handle_vFile_Stat() unimplemented");
769 }
770 
771 GDBRemoteCommunication::PacketResult
772 GDBRemoteCommunicationServerCommon::Handle_vFile_MD5(
773     StringExtractorGDBRemote &packet) {
774   packet.SetFilePos(::strlen("vFile:MD5:"));
775   std::string path;
776   packet.GetHexByteString(path);
777   if (!path.empty()) {
778     StreamGDBRemote response;
779     auto Result = llvm::sys::fs::md5_contents(path);
780     if (!Result) {
781       response.PutCString("F,");
782       response.PutCString("x");
783     } else {
784       response.PutCString("F,");
785       response.PutHex64(Result->low());
786       response.PutHex64(Result->high());
787     }
788     return SendPacketNoLock(response.GetString());
789   }
790   return SendErrorResponse(25);
791 }
792 
793 GDBRemoteCommunication::PacketResult
794 GDBRemoteCommunicationServerCommon::Handle_qPlatform_mkdir(
795     StringExtractorGDBRemote &packet) {
796   packet.SetFilePos(::strlen("qPlatform_mkdir:"));
797   mode_t mode = packet.GetHexMaxU32(false, UINT32_MAX);
798   if (packet.GetChar() == ',') {
799     std::string path;
800     packet.GetHexByteString(path);
801     Status error(llvm::sys::fs::create_directory(path, mode));
802 
803     StreamGDBRemote response;
804     response.Printf("F%u", error.GetError());
805 
806     return SendPacketNoLock(response.GetString());
807   }
808   return SendErrorResponse(20);
809 }
810 
811 GDBRemoteCommunication::PacketResult
812 GDBRemoteCommunicationServerCommon::Handle_qPlatform_chmod(
813     StringExtractorGDBRemote &packet) {
814   packet.SetFilePos(::strlen("qPlatform_chmod:"));
815 
816   auto perms =
817       static_cast<llvm::sys::fs::perms>(packet.GetHexMaxU32(false, UINT32_MAX));
818   if (packet.GetChar() == ',') {
819     std::string path;
820     packet.GetHexByteString(path);
821     Status error(llvm::sys::fs::setPermissions(path, perms));
822 
823     StreamGDBRemote response;
824     response.Printf("F%u", error.GetError());
825 
826     return SendPacketNoLock(response.GetString());
827   }
828   return SendErrorResponse(19);
829 }
830 
831 GDBRemoteCommunication::PacketResult
832 GDBRemoteCommunicationServerCommon::Handle_qSupported(
833     StringExtractorGDBRemote &packet) {
834   StreamGDBRemote response;
835 
836   // Features common to lldb-platform and llgs.
837   uint32_t max_packet_size = 128 * 1024; // 128KBytes is a reasonable max packet
838                                          // size--debugger can always use less
839   response.Printf("PacketSize=%x", max_packet_size);
840 
841   response.PutCString(";QStartNoAckMode+");
842   response.PutCString(";QThreadSuffixSupported+");
843   response.PutCString(";QListThreadsInStopReply+");
844   response.PutCString(";qEcho+");
845 #if defined(__linux__) || defined(__NetBSD__)
846   response.PutCString(";QPassSignals+");
847   response.PutCString(";qXfer:auxv:read+");
848 #endif
849 
850   return SendPacketNoLock(response.GetString());
851 }
852 
853 GDBRemoteCommunication::PacketResult
854 GDBRemoteCommunicationServerCommon::Handle_QThreadSuffixSupported(
855     StringExtractorGDBRemote &packet) {
856   m_thread_suffix_supported = true;
857   return SendOKResponse();
858 }
859 
860 GDBRemoteCommunication::PacketResult
861 GDBRemoteCommunicationServerCommon::Handle_QListThreadsInStopReply(
862     StringExtractorGDBRemote &packet) {
863   m_list_threads_in_stop_reply = true;
864   return SendOKResponse();
865 }
866 
867 GDBRemoteCommunication::PacketResult
868 GDBRemoteCommunicationServerCommon::Handle_QSetDetachOnError(
869     StringExtractorGDBRemote &packet) {
870   packet.SetFilePos(::strlen("QSetDetachOnError:"));
871   if (packet.GetU32(0))
872     m_process_launch_info.GetFlags().Set(eLaunchFlagDetachOnError);
873   else
874     m_process_launch_info.GetFlags().Clear(eLaunchFlagDetachOnError);
875   return SendOKResponse();
876 }
877 
878 GDBRemoteCommunication::PacketResult
879 GDBRemoteCommunicationServerCommon::Handle_QStartNoAckMode(
880     StringExtractorGDBRemote &packet) {
881   // Send response first before changing m_send_acks to we ack this packet
882   PacketResult packet_result = SendOKResponse();
883   m_send_acks = false;
884   return packet_result;
885 }
886 
887 GDBRemoteCommunication::PacketResult
888 GDBRemoteCommunicationServerCommon::Handle_QSetSTDIN(
889     StringExtractorGDBRemote &packet) {
890   packet.SetFilePos(::strlen("QSetSTDIN:"));
891   FileAction file_action;
892   std::string path;
893   packet.GetHexByteString(path);
894   const bool read = true;
895   const bool write = false;
896   if (file_action.Open(STDIN_FILENO, FileSpec(path), read, write)) {
897     m_process_launch_info.AppendFileAction(file_action);
898     return SendOKResponse();
899   }
900   return SendErrorResponse(15);
901 }
902 
903 GDBRemoteCommunication::PacketResult
904 GDBRemoteCommunicationServerCommon::Handle_QSetSTDOUT(
905     StringExtractorGDBRemote &packet) {
906   packet.SetFilePos(::strlen("QSetSTDOUT:"));
907   FileAction file_action;
908   std::string path;
909   packet.GetHexByteString(path);
910   const bool read = false;
911   const bool write = true;
912   if (file_action.Open(STDOUT_FILENO, FileSpec(path), read, write)) {
913     m_process_launch_info.AppendFileAction(file_action);
914     return SendOKResponse();
915   }
916   return SendErrorResponse(16);
917 }
918 
919 GDBRemoteCommunication::PacketResult
920 GDBRemoteCommunicationServerCommon::Handle_QSetSTDERR(
921     StringExtractorGDBRemote &packet) {
922   packet.SetFilePos(::strlen("QSetSTDERR:"));
923   FileAction file_action;
924   std::string path;
925   packet.GetHexByteString(path);
926   const bool read = false;
927   const bool write = true;
928   if (file_action.Open(STDERR_FILENO, FileSpec(path), read, write)) {
929     m_process_launch_info.AppendFileAction(file_action);
930     return SendOKResponse();
931   }
932   return SendErrorResponse(17);
933 }
934 
935 GDBRemoteCommunication::PacketResult
936 GDBRemoteCommunicationServerCommon::Handle_qLaunchSuccess(
937     StringExtractorGDBRemote &packet) {
938   if (m_process_launch_error.Success())
939     return SendOKResponse();
940   StreamString response;
941   response.PutChar('E');
942   response.PutCString(m_process_launch_error.AsCString("<unknown error>"));
943   return SendPacketNoLock(response.GetString());
944 }
945 
946 GDBRemoteCommunication::PacketResult
947 GDBRemoteCommunicationServerCommon::Handle_QEnvironment(
948     StringExtractorGDBRemote &packet) {
949   packet.SetFilePos(::strlen("QEnvironment:"));
950   const uint32_t bytes_left = packet.GetBytesLeft();
951   if (bytes_left > 0) {
952     m_process_launch_info.GetEnvironment().insert(packet.Peek());
953     return SendOKResponse();
954   }
955   return SendErrorResponse(12);
956 }
957 
958 GDBRemoteCommunication::PacketResult
959 GDBRemoteCommunicationServerCommon::Handle_QEnvironmentHexEncoded(
960     StringExtractorGDBRemote &packet) {
961   packet.SetFilePos(::strlen("QEnvironmentHexEncoded:"));
962   const uint32_t bytes_left = packet.GetBytesLeft();
963   if (bytes_left > 0) {
964     std::string str;
965     packet.GetHexByteString(str);
966     m_process_launch_info.GetEnvironment().insert(str);
967     return SendOKResponse();
968   }
969   return SendErrorResponse(12);
970 }
971 
972 GDBRemoteCommunication::PacketResult
973 GDBRemoteCommunicationServerCommon::Handle_QLaunchArch(
974     StringExtractorGDBRemote &packet) {
975   packet.SetFilePos(::strlen("QLaunchArch:"));
976   const uint32_t bytes_left = packet.GetBytesLeft();
977   if (bytes_left > 0) {
978     const char *arch_triple = packet.Peek();
979     m_process_launch_info.SetArchitecture(HostInfo::GetAugmentedArchSpec(arch_triple));
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 redundant
988   // argument indexes, redundant argument lengths and needed hex encoded
989   // argument string values. Really all that is needed is a comma separated hex
990   // encoded argument value list, but we will stay true to the documented
991   // 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 number of
1000     // 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 who would
1010         // 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 back into a UTF8
1020             // string and make sure the length matches the one supplied in the
1021             // 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(
1036                       arg, FileSpec::Style::native);
1037                 m_process_launch_info.GetArguments().AppendArgument(arg);
1038                 if (log)
1039                   log->Printf("LLGSPacketHandler::%s added arg %d: \"%s\"",
1040                               __FUNCTION__, actual_arg_index, arg.c_str());
1041                 ++actual_arg_index;
1042               }
1043             }
1044           }
1045         }
1046       }
1047     }
1048   }
1049 
1050   if (success) {
1051     m_process_launch_error = LaunchProcess();
1052     if (m_process_launch_error.Success())
1053       return SendOKResponse();
1054     LLDB_LOG(log, "failed to launch exe: {0}", m_process_launch_error);
1055   }
1056   return SendErrorResponse(8);
1057 }
1058 
1059 GDBRemoteCommunication::PacketResult
1060 GDBRemoteCommunicationServerCommon::Handle_qEcho(
1061     StringExtractorGDBRemote &packet) {
1062   // Just echo back the exact same packet for qEcho...
1063   return SendPacketNoLock(packet.GetStringRef());
1064 }
1065 
1066 GDBRemoteCommunication::PacketResult
1067 GDBRemoteCommunicationServerCommon::Handle_qModuleInfo(
1068     StringExtractorGDBRemote &packet) {
1069   packet.SetFilePos(::strlen("qModuleInfo:"));
1070 
1071   std::string module_path;
1072   packet.GetHexByteStringTerminatedBy(module_path, ';');
1073   if (module_path.empty())
1074     return SendErrorResponse(1);
1075 
1076   if (packet.GetChar() != ';')
1077     return SendErrorResponse(2);
1078 
1079   std::string triple;
1080   packet.GetHexByteString(triple);
1081 
1082   ModuleSpec matched_module_spec = GetModuleInfo(module_path, triple);
1083   if (!matched_module_spec.GetFileSpec())
1084     return SendErrorResponse(3);
1085 
1086   const auto file_offset = matched_module_spec.GetObjectOffset();
1087   const auto file_size = matched_module_spec.GetObjectSize();
1088   const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
1089 
1090   StreamGDBRemote response;
1091 
1092   if (uuid_str.empty()) {
1093     auto Result = llvm::sys::fs::md5_contents(matched_module_spec.GetFileSpec().GetPath());
1094     if (!Result)
1095       return SendErrorResponse(5);
1096     response.PutCString("md5:");
1097     response.PutCStringAsRawHex8(Result->digest().c_str());
1098   } else {
1099     response.PutCString("uuid:");
1100     response.PutCStringAsRawHex8(uuid_str.c_str());
1101   }
1102   response.PutChar(';');
1103 
1104   const auto &module_arch = matched_module_spec.GetArchitecture();
1105   response.PutCString("triple:");
1106   response.PutCStringAsRawHex8(module_arch.GetTriple().getTriple().c_str());
1107   response.PutChar(';');
1108 
1109   response.PutCString("file_path:");
1110   response.PutCStringAsRawHex8(matched_module_spec.GetFileSpec().GetCString());
1111   response.PutChar(';');
1112   response.PutCString("file_offset:");
1113   response.PutHex64(file_offset);
1114   response.PutChar(';');
1115   response.PutCString("file_size:");
1116   response.PutHex64(file_size);
1117   response.PutChar(';');
1118 
1119   return SendPacketNoLock(response.GetString());
1120 }
1121 
1122 GDBRemoteCommunication::PacketResult
1123 GDBRemoteCommunicationServerCommon::Handle_jModulesInfo(
1124     StringExtractorGDBRemote &packet) {
1125   packet.SetFilePos(::strlen("jModulesInfo:"));
1126 
1127   StructuredData::ObjectSP object_sp = StructuredData::ParseJSON(packet.Peek());
1128   if (!object_sp)
1129     return SendErrorResponse(1);
1130 
1131   StructuredData::Array *packet_array = object_sp->GetAsArray();
1132   if (!packet_array)
1133     return SendErrorResponse(2);
1134 
1135   JSONArray::SP response_array_sp = std::make_shared<JSONArray>();
1136   for (size_t i = 0; i < packet_array->GetSize(); ++i) {
1137     StructuredData::Dictionary *query =
1138         packet_array->GetItemAtIndex(i)->GetAsDictionary();
1139     if (!query)
1140       continue;
1141     llvm::StringRef file, triple;
1142     if (!query->GetValueForKeyAsString("file", file) ||
1143         !query->GetValueForKeyAsString("triple", triple))
1144       continue;
1145 
1146     ModuleSpec matched_module_spec = GetModuleInfo(file, triple);
1147     if (!matched_module_spec.GetFileSpec())
1148       continue;
1149 
1150     const auto file_offset = matched_module_spec.GetObjectOffset();
1151     const auto file_size = matched_module_spec.GetObjectSize();
1152     const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
1153 
1154     if (uuid_str.empty())
1155       continue;
1156 
1157     JSONObject::SP response = std::make_shared<JSONObject>();
1158     response_array_sp->AppendObject(response);
1159     response->SetObject("uuid", std::make_shared<JSONString>(uuid_str));
1160     response->SetObject(
1161         "triple",
1162         std::make_shared<JSONString>(
1163             matched_module_spec.GetArchitecture().GetTriple().getTriple()));
1164     response->SetObject("file_path",
1165                         std::make_shared<JSONString>(
1166                             matched_module_spec.GetFileSpec().GetPath()));
1167     response->SetObject("file_offset",
1168                         std::make_shared<JSONNumber>(file_offset));
1169     response->SetObject("file_size", std::make_shared<JSONNumber>(file_size));
1170   }
1171 
1172   StreamString response;
1173   response_array_sp->Write(response);
1174   StreamGDBRemote escaped_response;
1175   escaped_response.PutEscapedBytes(response.GetString().data(),
1176                                    response.GetSize());
1177   return SendPacketNoLock(escaped_response.GetString());
1178 }
1179 
1180 void GDBRemoteCommunicationServerCommon::CreateProcessInfoResponse(
1181     const ProcessInstanceInfo &proc_info, StreamString &response) {
1182   response.Printf(
1183       "pid:%" PRIu64 ";ppid:%" PRIu64 ";uid:%i;gid:%i;euid:%i;egid:%i;",
1184       proc_info.GetProcessID(), proc_info.GetParentProcessID(),
1185       proc_info.GetUserID(), proc_info.GetGroupID(),
1186       proc_info.GetEffectiveUserID(), proc_info.GetEffectiveGroupID());
1187   response.PutCString("name:");
1188   response.PutCStringAsRawHex8(proc_info.GetExecutableFile().GetCString());
1189   response.PutChar(';');
1190   const ArchSpec &proc_arch = proc_info.GetArchitecture();
1191   if (proc_arch.IsValid()) {
1192     const llvm::Triple &proc_triple = proc_arch.GetTriple();
1193     response.PutCString("triple:");
1194     response.PutCStringAsRawHex8(proc_triple.getTriple().c_str());
1195     response.PutChar(';');
1196   }
1197 }
1198 
1199 void GDBRemoteCommunicationServerCommon::
1200     CreateProcessInfoResponse_DebugServerStyle(
1201         const ProcessInstanceInfo &proc_info, StreamString &response) {
1202   response.Printf("pid:%" PRIx64 ";parent-pid:%" PRIx64
1203                   ";real-uid:%x;real-gid:%x;effective-uid:%x;effective-gid:%x;",
1204                   proc_info.GetProcessID(), proc_info.GetParentProcessID(),
1205                   proc_info.GetUserID(), proc_info.GetGroupID(),
1206                   proc_info.GetEffectiveUserID(),
1207                   proc_info.GetEffectiveGroupID());
1208 
1209   const ArchSpec &proc_arch = proc_info.GetArchitecture();
1210   if (proc_arch.IsValid()) {
1211     const llvm::Triple &proc_triple = proc_arch.GetTriple();
1212 #if defined(__APPLE__)
1213     // We'll send cputype/cpusubtype.
1214     const uint32_t cpu_type = proc_arch.GetMachOCPUType();
1215     if (cpu_type != 0)
1216       response.Printf("cputype:%" PRIx32 ";", cpu_type);
1217 
1218     const uint32_t cpu_subtype = proc_arch.GetMachOCPUSubType();
1219     if (cpu_subtype != 0)
1220       response.Printf("cpusubtype:%" PRIx32 ";", cpu_subtype);
1221 
1222     const std::string vendor = proc_triple.getVendorName();
1223     if (!vendor.empty())
1224       response.Printf("vendor:%s;", vendor.c_str());
1225 #else
1226     // We'll send the triple.
1227     response.PutCString("triple:");
1228     response.PutCStringAsRawHex8(proc_triple.getTriple().c_str());
1229     response.PutChar(';');
1230 #endif
1231     std::string ostype = proc_triple.getOSName();
1232     // Adjust so ostype reports ios for Apple/ARM and Apple/ARM64.
1233     if (proc_triple.getVendor() == llvm::Triple::Apple) {
1234       switch (proc_triple.getArch()) {
1235       case llvm::Triple::arm:
1236       case llvm::Triple::thumb:
1237       case llvm::Triple::aarch64:
1238         ostype = "ios";
1239         break;
1240       default:
1241         // No change.
1242         break;
1243       }
1244     }
1245     response.Printf("ostype:%s;", ostype.c_str());
1246 
1247     switch (proc_arch.GetByteOrder()) {
1248     case lldb::eByteOrderLittle:
1249       response.PutCString("endian:little;");
1250       break;
1251     case lldb::eByteOrderBig:
1252       response.PutCString("endian:big;");
1253       break;
1254     case lldb::eByteOrderPDP:
1255       response.PutCString("endian:pdp;");
1256       break;
1257     default:
1258       // Nothing.
1259       break;
1260     }
1261     // In case of MIPS64, pointer size is depend on ELF ABI For N32 the pointer
1262     // size is 4 and for N64 it is 8
1263     std::string abi = proc_arch.GetTargetABI();
1264     if (!abi.empty())
1265       response.Printf("elf_abi:%s;", abi.c_str());
1266     response.Printf("ptrsize:%d;", proc_arch.GetAddressByteSize());
1267   }
1268 }
1269 
1270 FileSpec GDBRemoteCommunicationServerCommon::FindModuleFile(
1271     const std::string &module_path, const ArchSpec &arch) {
1272 #ifdef __ANDROID__
1273   return HostInfoAndroid::ResolveLibraryPath(module_path, arch);
1274 #else
1275   FileSpec file_spec(module_path);
1276   FileSystem::Instance().Resolve(file_spec);
1277   return file_spec;
1278 #endif
1279 }
1280 
1281 ModuleSpec
1282 GDBRemoteCommunicationServerCommon::GetModuleInfo(llvm::StringRef module_path,
1283                                                   llvm::StringRef triple) {
1284   ArchSpec arch(triple);
1285 
1286   FileSpec req_module_path_spec(module_path);
1287   FileSystem::Instance().Resolve(req_module_path_spec);
1288 
1289   const FileSpec module_path_spec =
1290       FindModuleFile(req_module_path_spec.GetPath(), arch);
1291   const ModuleSpec module_spec(module_path_spec, arch);
1292 
1293   ModuleSpecList module_specs;
1294   if (!ObjectFile::GetModuleSpecifications(module_path_spec, 0, 0,
1295                                            module_specs))
1296     return ModuleSpec();
1297 
1298   ModuleSpec matched_module_spec;
1299   if (!module_specs.FindMatchingModuleSpec(module_spec, matched_module_spec))
1300     return ModuleSpec();
1301 
1302   return matched_module_spec;
1303 }
1304