1 //===-- GDBRemoteCommunicationServerCommon.cpp ------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "GDBRemoteCommunicationServerCommon.h"
10 
11 #include <errno.h>
12 
13 #ifdef __APPLE__
14 #include <TargetConditionals.h>
15 #endif
16 
17 #include <chrono>
18 #include <cstring>
19 
20 #include "lldb/Core/ModuleSpec.h"
21 #include "lldb/Host/Config.h"
22 #include "lldb/Host/File.h"
23 #include "lldb/Host/FileAction.h"
24 #include "lldb/Host/FileSystem.h"
25 #include "lldb/Host/Host.h"
26 #include "lldb/Host/HostInfo.h"
27 #include "lldb/Host/SafeMachO.h"
28 #include "lldb/Interpreter/OptionArgParser.h"
29 #include "lldb/Symbol/ObjectFile.h"
30 #include "lldb/Target/Platform.h"
31 #include "lldb/Target/Process.h"
32 #include "lldb/Utility/Endian.h"
33 #include "lldb/Utility/JSON.h"
34 #include "lldb/Utility/Log.h"
35 #include "lldb/Utility/StreamGDBRemote.h"
36 #include "lldb/Utility/StreamString.h"
37 #include "llvm/ADT/Triple.h"
38 
39 #include "ProcessGDBRemoteLog.h"
40 #include "lldb/Utility/StringExtractorGDBRemote.h"
41 
42 #ifdef __ANDROID__
43 #include "lldb/Host/android/HostInfoAndroid.h"
44 #endif
45 
46 #include "llvm/ADT/StringSwitch.h"
47 
48 using namespace lldb;
49 using namespace lldb_private;
50 using namespace lldb_private::process_gdb_remote;
51 
52 #ifdef __ANDROID__
53 const static uint32_t g_default_packet_timeout_sec = 20; // seconds
54 #else
55 const static uint32_t g_default_packet_timeout_sec = 0; // not specified
56 #endif
57 
58 //----------------------------------------------------------------------
59 // GDBRemoteCommunicationServerCommon constructor
60 //----------------------------------------------------------------------
61 GDBRemoteCommunicationServerCommon::GDBRemoteCommunicationServerCommon(
62     const char *comm_name, const char *listener_name)
63     : GDBRemoteCommunicationServer(comm_name, listener_name),
64       m_process_launch_info(), m_process_launch_error(), m_proc_infos(),
65       m_proc_infos_index(0), m_thread_suffix_supported(false),
66       m_list_threads_in_stop_reply(false) {
67   RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_A,
68                                 &GDBRemoteCommunicationServerCommon::Handle_A);
69   RegisterMemberFunctionHandler(
70       StringExtractorGDBRemote::eServerPacketType_QEnvironment,
71       &GDBRemoteCommunicationServerCommon::Handle_QEnvironment);
72   RegisterMemberFunctionHandler(
73       StringExtractorGDBRemote::eServerPacketType_QEnvironmentHexEncoded,
74       &GDBRemoteCommunicationServerCommon::Handle_QEnvironmentHexEncoded);
75   RegisterMemberFunctionHandler(
76       StringExtractorGDBRemote::eServerPacketType_qfProcessInfo,
77       &GDBRemoteCommunicationServerCommon::Handle_qfProcessInfo);
78   RegisterMemberFunctionHandler(
79       StringExtractorGDBRemote::eServerPacketType_qGroupName,
80       &GDBRemoteCommunicationServerCommon::Handle_qGroupName);
81   RegisterMemberFunctionHandler(
82       StringExtractorGDBRemote::eServerPacketType_qHostInfo,
83       &GDBRemoteCommunicationServerCommon::Handle_qHostInfo);
84   RegisterMemberFunctionHandler(
85       StringExtractorGDBRemote::eServerPacketType_QLaunchArch,
86       &GDBRemoteCommunicationServerCommon::Handle_QLaunchArch);
87   RegisterMemberFunctionHandler(
88       StringExtractorGDBRemote::eServerPacketType_qLaunchSuccess,
89       &GDBRemoteCommunicationServerCommon::Handle_qLaunchSuccess);
90   RegisterMemberFunctionHandler(
91       StringExtractorGDBRemote::eServerPacketType_QListThreadsInStopReply,
92       &GDBRemoteCommunicationServerCommon::Handle_QListThreadsInStopReply);
93   RegisterMemberFunctionHandler(
94       StringExtractorGDBRemote::eServerPacketType_qEcho,
95       &GDBRemoteCommunicationServerCommon::Handle_qEcho);
96   RegisterMemberFunctionHandler(
97       StringExtractorGDBRemote::eServerPacketType_qModuleInfo,
98       &GDBRemoteCommunicationServerCommon::Handle_qModuleInfo);
99   RegisterMemberFunctionHandler(
100       StringExtractorGDBRemote::eServerPacketType_jModulesInfo,
101       &GDBRemoteCommunicationServerCommon::Handle_jModulesInfo);
102   RegisterMemberFunctionHandler(
103       StringExtractorGDBRemote::eServerPacketType_qPlatform_chmod,
104       &GDBRemoteCommunicationServerCommon::Handle_qPlatform_chmod);
105   RegisterMemberFunctionHandler(
106       StringExtractorGDBRemote::eServerPacketType_qPlatform_mkdir,
107       &GDBRemoteCommunicationServerCommon::Handle_qPlatform_mkdir);
108   RegisterMemberFunctionHandler(
109       StringExtractorGDBRemote::eServerPacketType_qPlatform_shell,
110       &GDBRemoteCommunicationServerCommon::Handle_qPlatform_shell);
111   RegisterMemberFunctionHandler(
112       StringExtractorGDBRemote::eServerPacketType_qProcessInfoPID,
113       &GDBRemoteCommunicationServerCommon::Handle_qProcessInfoPID);
114   RegisterMemberFunctionHandler(
115       StringExtractorGDBRemote::eServerPacketType_QSetDetachOnError,
116       &GDBRemoteCommunicationServerCommon::Handle_QSetDetachOnError);
117   RegisterMemberFunctionHandler(
118       StringExtractorGDBRemote::eServerPacketType_QSetSTDERR,
119       &GDBRemoteCommunicationServerCommon::Handle_QSetSTDERR);
120   RegisterMemberFunctionHandler(
121       StringExtractorGDBRemote::eServerPacketType_QSetSTDIN,
122       &GDBRemoteCommunicationServerCommon::Handle_QSetSTDIN);
123   RegisterMemberFunctionHandler(
124       StringExtractorGDBRemote::eServerPacketType_QSetSTDOUT,
125       &GDBRemoteCommunicationServerCommon::Handle_QSetSTDOUT);
126   RegisterMemberFunctionHandler(
127       StringExtractorGDBRemote::eServerPacketType_qSpeedTest,
128       &GDBRemoteCommunicationServerCommon::Handle_qSpeedTest);
129   RegisterMemberFunctionHandler(
130       StringExtractorGDBRemote::eServerPacketType_qsProcessInfo,
131       &GDBRemoteCommunicationServerCommon::Handle_qsProcessInfo);
132   RegisterMemberFunctionHandler(
133       StringExtractorGDBRemote::eServerPacketType_QStartNoAckMode,
134       &GDBRemoteCommunicationServerCommon::Handle_QStartNoAckMode);
135   RegisterMemberFunctionHandler(
136       StringExtractorGDBRemote::eServerPacketType_qSupported,
137       &GDBRemoteCommunicationServerCommon::Handle_qSupported);
138   RegisterMemberFunctionHandler(
139       StringExtractorGDBRemote::eServerPacketType_QThreadSuffixSupported,
140       &GDBRemoteCommunicationServerCommon::Handle_QThreadSuffixSupported);
141   RegisterMemberFunctionHandler(
142       StringExtractorGDBRemote::eServerPacketType_qUserName,
143       &GDBRemoteCommunicationServerCommon::Handle_qUserName);
144   RegisterMemberFunctionHandler(
145       StringExtractorGDBRemote::eServerPacketType_vFile_close,
146       &GDBRemoteCommunicationServerCommon::Handle_vFile_Close);
147   RegisterMemberFunctionHandler(
148       StringExtractorGDBRemote::eServerPacketType_vFile_exists,
149       &GDBRemoteCommunicationServerCommon::Handle_vFile_Exists);
150   RegisterMemberFunctionHandler(
151       StringExtractorGDBRemote::eServerPacketType_vFile_md5,
152       &GDBRemoteCommunicationServerCommon::Handle_vFile_MD5);
153   RegisterMemberFunctionHandler(
154       StringExtractorGDBRemote::eServerPacketType_vFile_mode,
155       &GDBRemoteCommunicationServerCommon::Handle_vFile_Mode);
156   RegisterMemberFunctionHandler(
157       StringExtractorGDBRemote::eServerPacketType_vFile_open,
158       &GDBRemoteCommunicationServerCommon::Handle_vFile_Open);
159   RegisterMemberFunctionHandler(
160       StringExtractorGDBRemote::eServerPacketType_vFile_pread,
161       &GDBRemoteCommunicationServerCommon::Handle_vFile_pRead);
162   RegisterMemberFunctionHandler(
163       StringExtractorGDBRemote::eServerPacketType_vFile_pwrite,
164       &GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite);
165   RegisterMemberFunctionHandler(
166       StringExtractorGDBRemote::eServerPacketType_vFile_size,
167       &GDBRemoteCommunicationServerCommon::Handle_vFile_Size);
168   RegisterMemberFunctionHandler(
169       StringExtractorGDBRemote::eServerPacketType_vFile_stat,
170       &GDBRemoteCommunicationServerCommon::Handle_vFile_Stat);
171   RegisterMemberFunctionHandler(
172       StringExtractorGDBRemote::eServerPacketType_vFile_symlink,
173       &GDBRemoteCommunicationServerCommon::Handle_vFile_symlink);
174   RegisterMemberFunctionHandler(
175       StringExtractorGDBRemote::eServerPacketType_vFile_unlink,
176       &GDBRemoteCommunicationServerCommon::Handle_vFile_unlink);
177 }
178 
179 //----------------------------------------------------------------------
180 // Destructor
181 //----------------------------------------------------------------------
182 GDBRemoteCommunicationServerCommon::~GDBRemoteCommunicationServerCommon() {}
183 
184 GDBRemoteCommunication::PacketResult
185 GDBRemoteCommunicationServerCommon::Handle_qHostInfo(
186     StringExtractorGDBRemote &packet) {
187   StreamString response;
188 
189   // $cputype:16777223;cpusubtype:3;ostype:Darwin;vendor:apple;endian:little;ptrsize:8;#00
190 
191   ArchSpec host_arch(HostInfo::GetArchitecture());
192   const llvm::Triple &host_triple = host_arch.GetTriple();
193   response.PutCString("triple:");
194   response.PutStringAsRawHex8(host_triple.getTriple());
195   response.Printf(";ptrsize:%u;", host_arch.GetAddressByteSize());
196 
197   const char *distribution_id = host_arch.GetDistributionId().AsCString();
198   if (distribution_id) {
199     response.PutCString("distribution_id:");
200     response.PutStringAsRawHex8(distribution_id);
201     response.PutCString(";");
202   }
203 
204 #if defined(__APPLE__)
205   // For parity with debugserver, we'll include the vendor key.
206   response.PutCString("vendor:apple;");
207 
208   // Send out MachO info.
209   uint32_t cpu = host_arch.GetMachOCPUType();
210   uint32_t sub = host_arch.GetMachOCPUSubType();
211   if (cpu != LLDB_INVALID_CPUTYPE)
212     response.Printf("cputype:%u;", cpu);
213   if (sub != LLDB_INVALID_CPUTYPE)
214     response.Printf("cpusubtype:%u;", sub);
215 
216   if (cpu == llvm::MachO::CPU_TYPE_ARM || cpu == llvm::MachO::CPU_TYPE_ARM64) {
217 // Indicate the OS type.
218 #if defined(TARGET_OS_TV) && TARGET_OS_TV == 1
219     response.PutCString("ostype:tvos;");
220 #elif defined(TARGET_OS_WATCH) && TARGET_OS_WATCH == 1
221     response.PutCString("ostype:watchos;");
222 #elif defined(TARGET_OS_BRIDGE) && TARGET_OS_BRIDGE == 1
223     response.PutCString("ostype:bridgeos;");
224 #else
225     response.PutCString("ostype:ios;");
226 #endif
227 
228     // On arm, we use "synchronous" watchpoints which means the exception is
229     // delivered before the instruction executes.
230     response.PutCString("watchpoint_exceptions_received:before;");
231   } else {
232     response.PutCString("ostype:macosx;");
233     response.Printf("watchpoint_exceptions_received:after;");
234   }
235 
236 #else
237   if (host_arch.GetMachine() == llvm::Triple::aarch64 ||
238       host_arch.GetMachine() == llvm::Triple::aarch64_be ||
239       host_arch.GetMachine() == llvm::Triple::arm ||
240       host_arch.GetMachine() == llvm::Triple::armeb ||
241       host_arch.GetMachine() == llvm::Triple::mips64 ||
242       host_arch.GetMachine() == llvm::Triple::mips64el ||
243       host_arch.GetMachine() == llvm::Triple::mips ||
244       host_arch.GetMachine() == llvm::Triple::mipsel)
245     response.Printf("watchpoint_exceptions_received:before;");
246   else
247     response.Printf("watchpoint_exceptions_received:after;");
248 #endif
249 
250   switch (endian::InlHostByteOrder()) {
251   case eByteOrderBig:
252     response.PutCString("endian:big;");
253     break;
254   case eByteOrderLittle:
255     response.PutCString("endian:little;");
256     break;
257   case eByteOrderPDP:
258     response.PutCString("endian:pdp;");
259     break;
260   default:
261     response.PutCString("endian:unknown;");
262     break;
263   }
264 
265   llvm::VersionTuple version = HostInfo::GetOSVersion();
266   if (!version.empty()) {
267     response.Format("os_version:{0}", version.getAsString());
268     response.PutChar(';');
269   }
270 
271   std::string s;
272   if (HostInfo::GetOSBuildString(s)) {
273     response.PutCString("os_build:");
274     response.PutStringAsRawHex8(s);
275     response.PutChar(';');
276   }
277   if (HostInfo::GetOSKernelDescription(s)) {
278     response.PutCString("os_kernel:");
279     response.PutStringAsRawHex8(s);
280     response.PutChar(';');
281   }
282 
283 #if defined(__APPLE__)
284 
285 #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
286   // For iOS devices, we are connected through a USB Mux so we never pretend to
287   // actually have a hostname as far as the remote lldb that is connecting to
288   // this lldb-platform is concerned
289   response.PutCString("hostname:");
290   response.PutStringAsRawHex8("127.0.0.1");
291   response.PutChar(';');
292 #else  // #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
293   if (HostInfo::GetHostname(s)) {
294     response.PutCString("hostname:");
295     response.PutStringAsRawHex8(s);
296     response.PutChar(';');
297   }
298 #endif // #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
299 
300 #else  // #if defined(__APPLE__)
301   if (HostInfo::GetHostname(s)) {
302     response.PutCString("hostname:");
303     response.PutStringAsRawHex8(s);
304     response.PutChar(';');
305   }
306 #endif // #if defined(__APPLE__)
307 
308   if (g_default_packet_timeout_sec > 0)
309     response.Printf("default_packet_timeout:%u;", g_default_packet_timeout_sec);
310 
311   return SendPacketNoLock(response.GetString());
312 }
313 
314 GDBRemoteCommunication::PacketResult
315 GDBRemoteCommunicationServerCommon::Handle_qProcessInfoPID(
316     StringExtractorGDBRemote &packet) {
317   // Packet format: "qProcessInfoPID:%i" where %i is the pid
318   packet.SetFilePos(::strlen("qProcessInfoPID:"));
319   lldb::pid_t pid = packet.GetU32(LLDB_INVALID_PROCESS_ID);
320   if (pid != LLDB_INVALID_PROCESS_ID) {
321     ProcessInstanceInfo proc_info;
322     if (Host::GetProcessInfo(pid, proc_info)) {
323       StreamString response;
324       CreateProcessInfoResponse(proc_info, response);
325       return SendPacketNoLock(response.GetString());
326     }
327   }
328   return SendErrorResponse(1);
329 }
330 
331 GDBRemoteCommunication::PacketResult
332 GDBRemoteCommunicationServerCommon::Handle_qfProcessInfo(
333     StringExtractorGDBRemote &packet) {
334   m_proc_infos_index = 0;
335   m_proc_infos.Clear();
336 
337   ProcessInstanceInfoMatch match_info;
338   packet.SetFilePos(::strlen("qfProcessInfo"));
339   if (packet.GetChar() == ':') {
340     llvm::StringRef key;
341     llvm::StringRef value;
342     while (packet.GetNameColonValue(key, value)) {
343       bool success = true;
344       if (key.equals("name")) {
345         StringExtractor extractor(value);
346         std::string file;
347         extractor.GetHexByteString(file);
348         match_info.GetProcessInfo().GetExecutableFile().SetFile(
349             file, FileSpec::Style::native);
350       } else if (key.equals("name_match")) {
351         NameMatch name_match = llvm::StringSwitch<NameMatch>(value)
352                                    .Case("equals", NameMatch::Equals)
353                                    .Case("starts_with", NameMatch::StartsWith)
354                                    .Case("ends_with", NameMatch::EndsWith)
355                                    .Case("contains", NameMatch::Contains)
356                                    .Case("regex", NameMatch::RegularExpression)
357                                    .Default(NameMatch::Ignore);
358         match_info.SetNameMatchType(name_match);
359         if (name_match == NameMatch::Ignore)
360           return SendErrorResponse(2);
361       } else if (key.equals("pid")) {
362         lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
363         if (value.getAsInteger(0, pid))
364           return SendErrorResponse(2);
365         match_info.GetProcessInfo().SetProcessID(pid);
366       } else if (key.equals("parent_pid")) {
367         lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
368         if (value.getAsInteger(0, pid))
369           return SendErrorResponse(2);
370         match_info.GetProcessInfo().SetParentProcessID(pid);
371       } else if (key.equals("uid")) {
372         uint32_t uid = UINT32_MAX;
373         if (value.getAsInteger(0, uid))
374           return SendErrorResponse(2);
375         match_info.GetProcessInfo().SetUserID(uid);
376       } else if (key.equals("gid")) {
377         uint32_t gid = UINT32_MAX;
378         if (value.getAsInteger(0, gid))
379           return SendErrorResponse(2);
380         match_info.GetProcessInfo().SetGroupID(gid);
381       } else if (key.equals("euid")) {
382         uint32_t uid = UINT32_MAX;
383         if (value.getAsInteger(0, uid))
384           return SendErrorResponse(2);
385         match_info.GetProcessInfo().SetEffectiveUserID(uid);
386       } else if (key.equals("egid")) {
387         uint32_t gid = UINT32_MAX;
388         if (value.getAsInteger(0, gid))
389           return SendErrorResponse(2);
390         match_info.GetProcessInfo().SetEffectiveGroupID(gid);
391       } else if (key.equals("all_users")) {
392         match_info.SetMatchAllUsers(
393             OptionArgParser::ToBoolean(value, false, &success));
394       } else if (key.equals("triple")) {
395         match_info.GetProcessInfo().GetArchitecture() =
396             HostInfo::GetAugmentedArchSpec(value);
397       } else {
398         success = false;
399       }
400 
401       if (!success)
402         return SendErrorResponse(2);
403     }
404   }
405 
406   if (Host::FindProcesses(match_info, m_proc_infos)) {
407     // We found something, return the first item by calling the get subsequent
408     // process info packet handler...
409     return Handle_qsProcessInfo(packet);
410   }
411   return SendErrorResponse(3);
412 }
413 
414 GDBRemoteCommunication::PacketResult
415 GDBRemoteCommunicationServerCommon::Handle_qsProcessInfo(
416     StringExtractorGDBRemote &packet) {
417   if (m_proc_infos_index < m_proc_infos.GetSize()) {
418     StreamString response;
419     CreateProcessInfoResponse(
420         m_proc_infos.GetProcessInfoAtIndex(m_proc_infos_index), response);
421     ++m_proc_infos_index;
422     return SendPacketNoLock(response.GetString());
423   }
424   return SendErrorResponse(4);
425 }
426 
427 GDBRemoteCommunication::PacketResult
428 GDBRemoteCommunicationServerCommon::Handle_qUserName(
429     StringExtractorGDBRemote &packet) {
430 #if !defined(LLDB_DISABLE_POSIX)
431   Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
432   if (log)
433     log->Printf("GDBRemoteCommunicationServerCommon::%s begin", __FUNCTION__);
434 
435   // Packet format: "qUserName:%i" where %i is the uid
436   packet.SetFilePos(::strlen("qUserName:"));
437   uint32_t uid = packet.GetU32(UINT32_MAX);
438   if (uid != UINT32_MAX) {
439     if (llvm::Optional<llvm::StringRef> name =
440             HostInfo::GetUserIDResolver().GetUserName(uid)) {
441       StreamString response;
442       response.PutStringAsRawHex8(*name);
443       return SendPacketNoLock(response.GetString());
444     }
445   }
446   if (log)
447     log->Printf("GDBRemoteCommunicationServerCommon::%s end", __FUNCTION__);
448 #endif
449   return SendErrorResponse(5);
450 }
451 
452 GDBRemoteCommunication::PacketResult
453 GDBRemoteCommunicationServerCommon::Handle_qGroupName(
454     StringExtractorGDBRemote &packet) {
455 #if !defined(LLDB_DISABLE_POSIX)
456   // Packet format: "qGroupName:%i" where %i is the gid
457   packet.SetFilePos(::strlen("qGroupName:"));
458   uint32_t gid = packet.GetU32(UINT32_MAX);
459   if (gid != UINT32_MAX) {
460     if (llvm::Optional<llvm::StringRef> name =
461             HostInfo::GetUserIDResolver().GetGroupName(gid)) {
462       StreamString response;
463       response.PutStringAsRawHex8(*name);
464       return SendPacketNoLock(response.GetString());
465     }
466   }
467 #endif
468   return SendErrorResponse(6);
469 }
470 
471 GDBRemoteCommunication::PacketResult
472 GDBRemoteCommunicationServerCommon::Handle_qSpeedTest(
473     StringExtractorGDBRemote &packet) {
474   packet.SetFilePos(::strlen("qSpeedTest:"));
475 
476   llvm::StringRef key;
477   llvm::StringRef value;
478   bool success = packet.GetNameColonValue(key, value);
479   if (success && key.equals("response_size")) {
480     uint32_t response_size = 0;
481     if (!value.getAsInteger(0, response_size)) {
482       if (response_size == 0)
483         return SendOKResponse();
484       StreamString response;
485       uint32_t bytes_left = response_size;
486       response.PutCString("data:");
487       while (bytes_left > 0) {
488         if (bytes_left >= 26) {
489           response.PutCString("ABCDEFGHIJKLMNOPQRSTUVWXYZ");
490           bytes_left -= 26;
491         } else {
492           response.Printf("%*.*s;", bytes_left, bytes_left,
493                           "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
494           bytes_left = 0;
495         }
496       }
497       return SendPacketNoLock(response.GetString());
498     }
499   }
500   return SendErrorResponse(7);
501 }
502 
503 GDBRemoteCommunication::PacketResult
504 GDBRemoteCommunicationServerCommon::Handle_vFile_Open(
505     StringExtractorGDBRemote &packet) {
506   packet.SetFilePos(::strlen("vFile:open:"));
507   std::string path;
508   packet.GetHexByteStringTerminatedBy(path, ',');
509   if (!path.empty()) {
510     if (packet.GetChar() == ',') {
511       uint32_t flags = packet.GetHexMaxU32(false, 0);
512       if (packet.GetChar() == ',') {
513         mode_t mode = packet.GetHexMaxU32(false, 0600);
514         FileSpec path_spec(path);
515         FileSystem::Instance().Resolve(path_spec);
516         File file;
517         // Do not close fd.
518         Status error =
519             FileSystem::Instance().Open(file, path_spec, flags, mode, false);
520         const int save_errno = error.GetError();
521         StreamString response;
522         response.PutChar('F');
523         response.Printf("%i", file.GetDescriptor());
524         if (save_errno)
525           response.Printf(",%i", save_errno);
526         return SendPacketNoLock(response.GetString());
527       }
528     }
529   }
530   return SendErrorResponse(18);
531 }
532 
533 GDBRemoteCommunication::PacketResult
534 GDBRemoteCommunicationServerCommon::Handle_vFile_Close(
535     StringExtractorGDBRemote &packet) {
536   packet.SetFilePos(::strlen("vFile:close:"));
537   int fd = packet.GetS32(-1);
538   int err = -1;
539   int save_errno = 0;
540   if (fd >= 0) {
541     File file(fd, true);
542     Status error = file.Close();
543     err = 0;
544     save_errno = error.GetError();
545   } else {
546     save_errno = EINVAL;
547   }
548   StreamString response;
549   response.PutChar('F');
550   response.Printf("%i", err);
551   if (save_errno)
552     response.Printf(",%i", save_errno);
553   return SendPacketNoLock(response.GetString());
554 }
555 
556 GDBRemoteCommunication::PacketResult
557 GDBRemoteCommunicationServerCommon::Handle_vFile_pRead(
558     StringExtractorGDBRemote &packet) {
559   StreamGDBRemote response;
560   packet.SetFilePos(::strlen("vFile:pread:"));
561   int fd = packet.GetS32(-1);
562   if (packet.GetChar() == ',') {
563     size_t count = packet.GetU64(UINT64_MAX);
564     if (packet.GetChar() == ',') {
565       off_t offset = packet.GetU64(UINT32_MAX);
566       if (count == UINT64_MAX) {
567         response.Printf("F-1:%i", EINVAL);
568         return SendPacketNoLock(response.GetString());
569       }
570 
571       std::string buffer(count, 0);
572       File file(fd, false);
573       Status error = file.Read(static_cast<void *>(&buffer[0]), count, offset);
574       const ssize_t bytes_read = error.Success() ? count : -1;
575       const int save_errno = error.GetError();
576       response.PutChar('F');
577       response.Printf("%zi", bytes_read);
578       if (save_errno)
579         response.Printf(",%i", save_errno);
580       else {
581         response.PutChar(';');
582         response.PutEscapedBytes(&buffer[0], bytes_read);
583       }
584       return SendPacketNoLock(response.GetString());
585     }
586   }
587   return SendErrorResponse(21);
588 }
589 
590 GDBRemoteCommunication::PacketResult
591 GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite(
592     StringExtractorGDBRemote &packet) {
593   packet.SetFilePos(::strlen("vFile:pwrite:"));
594 
595   StreamGDBRemote response;
596   response.PutChar('F');
597 
598   int fd = packet.GetU32(UINT32_MAX);
599   if (packet.GetChar() == ',') {
600     off_t offset = packet.GetU64(UINT32_MAX);
601     if (packet.GetChar() == ',') {
602       std::string buffer;
603       if (packet.GetEscapedBinaryData(buffer)) {
604         File file(fd, false);
605         size_t count = buffer.size();
606         Status error =
607             file.Write(static_cast<const void *>(&buffer[0]), count, offset);
608         const ssize_t bytes_written = error.Success() ? count : -1;
609         const int save_errno = error.GetError();
610         response.Printf("%zi", bytes_written);
611         if (save_errno)
612           response.Printf(",%i", save_errno);
613       } else {
614         response.Printf("-1,%i", EINVAL);
615       }
616       return SendPacketNoLock(response.GetString());
617     }
618   }
619   return SendErrorResponse(27);
620 }
621 
622 GDBRemoteCommunication::PacketResult
623 GDBRemoteCommunicationServerCommon::Handle_vFile_Size(
624     StringExtractorGDBRemote &packet) {
625   packet.SetFilePos(::strlen("vFile:size:"));
626   std::string path;
627   packet.GetHexByteString(path);
628   if (!path.empty()) {
629     uint64_t Size;
630     if (llvm::sys::fs::file_size(path, Size))
631       return SendErrorResponse(5);
632     StreamString response;
633     response.PutChar('F');
634     response.PutHex64(Size);
635     if (Size == UINT64_MAX) {
636       response.PutChar(',');
637       response.PutHex64(Size); // TODO: replace with Host::GetSyswideErrorCode()
638     }
639     return SendPacketNoLock(response.GetString());
640   }
641   return SendErrorResponse(22);
642 }
643 
644 GDBRemoteCommunication::PacketResult
645 GDBRemoteCommunicationServerCommon::Handle_vFile_Mode(
646     StringExtractorGDBRemote &packet) {
647   packet.SetFilePos(::strlen("vFile:mode:"));
648   std::string path;
649   packet.GetHexByteString(path);
650   if (!path.empty()) {
651     FileSpec file_spec(path);
652     FileSystem::Instance().Resolve(file_spec);
653     std::error_code ec;
654     const uint32_t mode = FileSystem::Instance().GetPermissions(file_spec, ec);
655     StreamString response;
656     response.Printf("F%u", mode);
657     if (mode == 0 || ec)
658       response.Printf(",%i", (int)Status(ec).GetError());
659     return SendPacketNoLock(response.GetString());
660   }
661   return SendErrorResponse(23);
662 }
663 
664 GDBRemoteCommunication::PacketResult
665 GDBRemoteCommunicationServerCommon::Handle_vFile_Exists(
666     StringExtractorGDBRemote &packet) {
667   packet.SetFilePos(::strlen("vFile:exists:"));
668   std::string path;
669   packet.GetHexByteString(path);
670   if (!path.empty()) {
671     bool retcode = llvm::sys::fs::exists(path);
672     StreamString response;
673     response.PutChar('F');
674     response.PutChar(',');
675     if (retcode)
676       response.PutChar('1');
677     else
678       response.PutChar('0');
679     return SendPacketNoLock(response.GetString());
680   }
681   return SendErrorResponse(24);
682 }
683 
684 GDBRemoteCommunication::PacketResult
685 GDBRemoteCommunicationServerCommon::Handle_vFile_symlink(
686     StringExtractorGDBRemote &packet) {
687   packet.SetFilePos(::strlen("vFile:symlink:"));
688   std::string dst, src;
689   packet.GetHexByteStringTerminatedBy(dst, ',');
690   packet.GetChar(); // Skip ',' char
691   packet.GetHexByteString(src);
692 
693   FileSpec src_spec(src);
694   FileSystem::Instance().Resolve(src_spec);
695   Status error = FileSystem::Instance().Symlink(src_spec, FileSpec(dst));
696 
697   StreamString response;
698   response.Printf("F%u,%u", error.GetError(), error.GetError());
699   return SendPacketNoLock(response.GetString());
700 }
701 
702 GDBRemoteCommunication::PacketResult
703 GDBRemoteCommunicationServerCommon::Handle_vFile_unlink(
704     StringExtractorGDBRemote &packet) {
705   packet.SetFilePos(::strlen("vFile:unlink:"));
706   std::string path;
707   packet.GetHexByteString(path);
708   Status error(llvm::sys::fs::remove(path));
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_qPlatform_shell(
716     StringExtractorGDBRemote &packet) {
717   packet.SetFilePos(::strlen("qPlatform_shell:"));
718   std::string path;
719   std::string working_dir;
720   packet.GetHexByteStringTerminatedBy(path, ',');
721   if (!path.empty()) {
722     if (packet.GetChar() == ',') {
723       // FIXME: add timeout to qPlatform_shell packet
724       // uint32_t timeout = packet.GetHexMaxU32(false, 32);
725       if (packet.GetChar() == ',')
726         packet.GetHexByteString(working_dir);
727       int status, signo;
728       std::string output;
729       FileSpec working_spec(working_dir);
730       FileSystem::Instance().Resolve(working_spec);
731       Status err =
732           Host::RunShellCommand(path.c_str(), working_spec, &status, &signo,
733                                 &output, std::chrono::seconds(10));
734       StreamGDBRemote response;
735       if (err.Fail()) {
736         response.PutCString("F,");
737         response.PutHex32(UINT32_MAX);
738       } else {
739         response.PutCString("F,");
740         response.PutHex32(status);
741         response.PutChar(',');
742         response.PutHex32(signo);
743         response.PutChar(',');
744         response.PutEscapedBytes(output.c_str(), output.size());
745       }
746       return SendPacketNoLock(response.GetString());
747     }
748   }
749   return SendErrorResponse(24);
750 }
751 
752 GDBRemoteCommunication::PacketResult
753 GDBRemoteCommunicationServerCommon::Handle_vFile_Stat(
754     StringExtractorGDBRemote &packet) {
755   return SendUnimplementedResponse(
756       "GDBRemoteCommunicationServerCommon::Handle_vFile_Stat() unimplemented");
757 }
758 
759 GDBRemoteCommunication::PacketResult
760 GDBRemoteCommunicationServerCommon::Handle_vFile_MD5(
761     StringExtractorGDBRemote &packet) {
762   packet.SetFilePos(::strlen("vFile:MD5:"));
763   std::string path;
764   packet.GetHexByteString(path);
765   if (!path.empty()) {
766     StreamGDBRemote response;
767     auto Result = llvm::sys::fs::md5_contents(path);
768     if (!Result) {
769       response.PutCString("F,");
770       response.PutCString("x");
771     } else {
772       response.PutCString("F,");
773       response.PutHex64(Result->low());
774       response.PutHex64(Result->high());
775     }
776     return SendPacketNoLock(response.GetString());
777   }
778   return SendErrorResponse(25);
779 }
780 
781 GDBRemoteCommunication::PacketResult
782 GDBRemoteCommunicationServerCommon::Handle_qPlatform_mkdir(
783     StringExtractorGDBRemote &packet) {
784   packet.SetFilePos(::strlen("qPlatform_mkdir:"));
785   mode_t mode = packet.GetHexMaxU32(false, UINT32_MAX);
786   if (packet.GetChar() == ',') {
787     std::string path;
788     packet.GetHexByteString(path);
789     Status error(llvm::sys::fs::create_directory(path, mode));
790 
791     StreamGDBRemote response;
792     response.Printf("F%u", error.GetError());
793 
794     return SendPacketNoLock(response.GetString());
795   }
796   return SendErrorResponse(20);
797 }
798 
799 GDBRemoteCommunication::PacketResult
800 GDBRemoteCommunicationServerCommon::Handle_qPlatform_chmod(
801     StringExtractorGDBRemote &packet) {
802   packet.SetFilePos(::strlen("qPlatform_chmod:"));
803 
804   auto perms =
805       static_cast<llvm::sys::fs::perms>(packet.GetHexMaxU32(false, UINT32_MAX));
806   if (packet.GetChar() == ',') {
807     std::string path;
808     packet.GetHexByteString(path);
809     Status error(llvm::sys::fs::setPermissions(path, perms));
810 
811     StreamGDBRemote response;
812     response.Printf("F%u", error.GetError());
813 
814     return SendPacketNoLock(response.GetString());
815   }
816   return SendErrorResponse(19);
817 }
818 
819 GDBRemoteCommunication::PacketResult
820 GDBRemoteCommunicationServerCommon::Handle_qSupported(
821     StringExtractorGDBRemote &packet) {
822   StreamGDBRemote response;
823 
824   // Features common to lldb-platform and llgs.
825   uint32_t max_packet_size = 128 * 1024; // 128KBytes is a reasonable max packet
826                                          // size--debugger can always use less
827   response.Printf("PacketSize=%x", max_packet_size);
828 
829   response.PutCString(";QStartNoAckMode+");
830   response.PutCString(";QThreadSuffixSupported+");
831   response.PutCString(";QListThreadsInStopReply+");
832   response.PutCString(";qEcho+");
833 #if defined(__linux__) || defined(__NetBSD__)
834   response.PutCString(";QPassSignals+");
835   response.PutCString(";qXfer:auxv:read+");
836 #endif
837 
838   return SendPacketNoLock(response.GetString());
839 }
840 
841 GDBRemoteCommunication::PacketResult
842 GDBRemoteCommunicationServerCommon::Handle_QThreadSuffixSupported(
843     StringExtractorGDBRemote &packet) {
844   m_thread_suffix_supported = true;
845   return SendOKResponse();
846 }
847 
848 GDBRemoteCommunication::PacketResult
849 GDBRemoteCommunicationServerCommon::Handle_QListThreadsInStopReply(
850     StringExtractorGDBRemote &packet) {
851   m_list_threads_in_stop_reply = true;
852   return SendOKResponse();
853 }
854 
855 GDBRemoteCommunication::PacketResult
856 GDBRemoteCommunicationServerCommon::Handle_QSetDetachOnError(
857     StringExtractorGDBRemote &packet) {
858   packet.SetFilePos(::strlen("QSetDetachOnError:"));
859   if (packet.GetU32(0))
860     m_process_launch_info.GetFlags().Set(eLaunchFlagDetachOnError);
861   else
862     m_process_launch_info.GetFlags().Clear(eLaunchFlagDetachOnError);
863   return SendOKResponse();
864 }
865 
866 GDBRemoteCommunication::PacketResult
867 GDBRemoteCommunicationServerCommon::Handle_QStartNoAckMode(
868     StringExtractorGDBRemote &packet) {
869   // Send response first before changing m_send_acks to we ack this packet
870   PacketResult packet_result = SendOKResponse();
871   m_send_acks = false;
872   return packet_result;
873 }
874 
875 GDBRemoteCommunication::PacketResult
876 GDBRemoteCommunicationServerCommon::Handle_QSetSTDIN(
877     StringExtractorGDBRemote &packet) {
878   packet.SetFilePos(::strlen("QSetSTDIN:"));
879   FileAction file_action;
880   std::string path;
881   packet.GetHexByteString(path);
882   const bool read = true;
883   const bool write = false;
884   if (file_action.Open(STDIN_FILENO, FileSpec(path), read, write)) {
885     m_process_launch_info.AppendFileAction(file_action);
886     return SendOKResponse();
887   }
888   return SendErrorResponse(15);
889 }
890 
891 GDBRemoteCommunication::PacketResult
892 GDBRemoteCommunicationServerCommon::Handle_QSetSTDOUT(
893     StringExtractorGDBRemote &packet) {
894   packet.SetFilePos(::strlen("QSetSTDOUT:"));
895   FileAction file_action;
896   std::string path;
897   packet.GetHexByteString(path);
898   const bool read = false;
899   const bool write = true;
900   if (file_action.Open(STDOUT_FILENO, FileSpec(path), read, write)) {
901     m_process_launch_info.AppendFileAction(file_action);
902     return SendOKResponse();
903   }
904   return SendErrorResponse(16);
905 }
906 
907 GDBRemoteCommunication::PacketResult
908 GDBRemoteCommunicationServerCommon::Handle_QSetSTDERR(
909     StringExtractorGDBRemote &packet) {
910   packet.SetFilePos(::strlen("QSetSTDERR:"));
911   FileAction file_action;
912   std::string path;
913   packet.GetHexByteString(path);
914   const bool read = false;
915   const bool write = true;
916   if (file_action.Open(STDERR_FILENO, FileSpec(path), read, write)) {
917     m_process_launch_info.AppendFileAction(file_action);
918     return SendOKResponse();
919   }
920   return SendErrorResponse(17);
921 }
922 
923 GDBRemoteCommunication::PacketResult
924 GDBRemoteCommunicationServerCommon::Handle_qLaunchSuccess(
925     StringExtractorGDBRemote &packet) {
926   if (m_process_launch_error.Success())
927     return SendOKResponse();
928   StreamString response;
929   response.PutChar('E');
930   response.PutCString(m_process_launch_error.AsCString("<unknown error>"));
931   return SendPacketNoLock(response.GetString());
932 }
933 
934 GDBRemoteCommunication::PacketResult
935 GDBRemoteCommunicationServerCommon::Handle_QEnvironment(
936     StringExtractorGDBRemote &packet) {
937   packet.SetFilePos(::strlen("QEnvironment:"));
938   const uint32_t bytes_left = packet.GetBytesLeft();
939   if (bytes_left > 0) {
940     m_process_launch_info.GetEnvironment().insert(packet.Peek());
941     return SendOKResponse();
942   }
943   return SendErrorResponse(12);
944 }
945 
946 GDBRemoteCommunication::PacketResult
947 GDBRemoteCommunicationServerCommon::Handle_QEnvironmentHexEncoded(
948     StringExtractorGDBRemote &packet) {
949   packet.SetFilePos(::strlen("QEnvironmentHexEncoded:"));
950   const uint32_t bytes_left = packet.GetBytesLeft();
951   if (bytes_left > 0) {
952     std::string str;
953     packet.GetHexByteString(str);
954     m_process_launch_info.GetEnvironment().insert(str);
955     return SendOKResponse();
956   }
957   return SendErrorResponse(12);
958 }
959 
960 GDBRemoteCommunication::PacketResult
961 GDBRemoteCommunicationServerCommon::Handle_QLaunchArch(
962     StringExtractorGDBRemote &packet) {
963   packet.SetFilePos(::strlen("QLaunchArch:"));
964   const uint32_t bytes_left = packet.GetBytesLeft();
965   if (bytes_left > 0) {
966     const char *arch_triple = packet.Peek();
967     m_process_launch_info.SetArchitecture(
968         HostInfo::GetAugmentedArchSpec(arch_triple));
969     return SendOKResponse();
970   }
971   return SendErrorResponse(13);
972 }
973 
974 GDBRemoteCommunication::PacketResult
975 GDBRemoteCommunicationServerCommon::Handle_A(StringExtractorGDBRemote &packet) {
976   // The 'A' packet is the most over designed packet ever here with redundant
977   // argument indexes, redundant argument lengths and needed hex encoded
978   // argument string values. Really all that is needed is a comma separated hex
979   // encoded argument value list, but we will stay true to the documented
980   // version of the 'A' packet here...
981 
982   Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
983   int actual_arg_index = 0;
984 
985   packet.SetFilePos(1); // Skip the 'A'
986   bool success = true;
987   while (success && packet.GetBytesLeft() > 0) {
988     // Decode the decimal argument string length. This length is the number of
989     // hex nibbles in the argument string value.
990     const uint32_t arg_len = packet.GetU32(UINT32_MAX);
991     if (arg_len == UINT32_MAX)
992       success = false;
993     else {
994       // Make sure the argument hex string length is followed by a comma
995       if (packet.GetChar() != ',')
996         success = false;
997       else {
998         // Decode the argument index. We ignore this really because who would
999         // really send down the arguments in a random order???
1000         const uint32_t arg_idx = packet.GetU32(UINT32_MAX);
1001         if (arg_idx == UINT32_MAX)
1002           success = false;
1003         else {
1004           // Make sure the argument index is followed by a comma
1005           if (packet.GetChar() != ',')
1006             success = false;
1007           else {
1008             // Decode the argument string value from hex bytes back into a UTF8
1009             // string and make sure the length matches the one supplied in the
1010             // packet
1011             std::string arg;
1012             if (packet.GetHexByteStringFixedLength(arg, arg_len) !=
1013                 (arg_len / 2))
1014               success = false;
1015             else {
1016               // If there are any bytes left
1017               if (packet.GetBytesLeft()) {
1018                 if (packet.GetChar() != ',')
1019                   success = false;
1020               }
1021 
1022               if (success) {
1023                 if (arg_idx == 0)
1024                   m_process_launch_info.GetExecutableFile().SetFile(
1025                       arg, FileSpec::Style::native);
1026                 m_process_launch_info.GetArguments().AppendArgument(arg);
1027                 if (log)
1028                   log->Printf("LLGSPacketHandler::%s added arg %d: \"%s\"",
1029                               __FUNCTION__, actual_arg_index, arg.c_str());
1030                 ++actual_arg_index;
1031               }
1032             }
1033           }
1034         }
1035       }
1036     }
1037   }
1038 
1039   if (success) {
1040     m_process_launch_error = LaunchProcess();
1041     if (m_process_launch_error.Success())
1042       return SendOKResponse();
1043     LLDB_LOG(log, "failed to launch exe: {0}", m_process_launch_error);
1044   }
1045   return SendErrorResponse(8);
1046 }
1047 
1048 GDBRemoteCommunication::PacketResult
1049 GDBRemoteCommunicationServerCommon::Handle_qEcho(
1050     StringExtractorGDBRemote &packet) {
1051   // Just echo back the exact same packet for qEcho...
1052   return SendPacketNoLock(packet.GetStringRef());
1053 }
1054 
1055 GDBRemoteCommunication::PacketResult
1056 GDBRemoteCommunicationServerCommon::Handle_qModuleInfo(
1057     StringExtractorGDBRemote &packet) {
1058   packet.SetFilePos(::strlen("qModuleInfo:"));
1059 
1060   std::string module_path;
1061   packet.GetHexByteStringTerminatedBy(module_path, ';');
1062   if (module_path.empty())
1063     return SendErrorResponse(1);
1064 
1065   if (packet.GetChar() != ';')
1066     return SendErrorResponse(2);
1067 
1068   std::string triple;
1069   packet.GetHexByteString(triple);
1070 
1071   ModuleSpec matched_module_spec = GetModuleInfo(module_path, triple);
1072   if (!matched_module_spec.GetFileSpec())
1073     return SendErrorResponse(3);
1074 
1075   const auto file_offset = matched_module_spec.GetObjectOffset();
1076   const auto file_size = matched_module_spec.GetObjectSize();
1077   const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
1078 
1079   StreamGDBRemote response;
1080 
1081   if (uuid_str.empty()) {
1082     auto Result = llvm::sys::fs::md5_contents(
1083         matched_module_spec.GetFileSpec().GetPath());
1084     if (!Result)
1085       return SendErrorResponse(5);
1086     response.PutCString("md5:");
1087     response.PutStringAsRawHex8(Result->digest());
1088   } else {
1089     response.PutCString("uuid:");
1090     response.PutStringAsRawHex8(uuid_str);
1091   }
1092   response.PutChar(';');
1093 
1094   const auto &module_arch = matched_module_spec.GetArchitecture();
1095   response.PutCString("triple:");
1096   response.PutStringAsRawHex8(module_arch.GetTriple().getTriple());
1097   response.PutChar(';');
1098 
1099   response.PutCString("file_path:");
1100   response.PutStringAsRawHex8(matched_module_spec.GetFileSpec().GetCString());
1101   response.PutChar(';');
1102   response.PutCString("file_offset:");
1103   response.PutHex64(file_offset);
1104   response.PutChar(';');
1105   response.PutCString("file_size:");
1106   response.PutHex64(file_size);
1107   response.PutChar(';');
1108 
1109   return SendPacketNoLock(response.GetString());
1110 }
1111 
1112 GDBRemoteCommunication::PacketResult
1113 GDBRemoteCommunicationServerCommon::Handle_jModulesInfo(
1114     StringExtractorGDBRemote &packet) {
1115   packet.SetFilePos(::strlen("jModulesInfo:"));
1116 
1117   StructuredData::ObjectSP object_sp = StructuredData::ParseJSON(packet.Peek());
1118   if (!object_sp)
1119     return SendErrorResponse(1);
1120 
1121   StructuredData::Array *packet_array = object_sp->GetAsArray();
1122   if (!packet_array)
1123     return SendErrorResponse(2);
1124 
1125   JSONArray::SP response_array_sp = std::make_shared<JSONArray>();
1126   for (size_t i = 0; i < packet_array->GetSize(); ++i) {
1127     StructuredData::Dictionary *query =
1128         packet_array->GetItemAtIndex(i)->GetAsDictionary();
1129     if (!query)
1130       continue;
1131     llvm::StringRef file, triple;
1132     if (!query->GetValueForKeyAsString("file", file) ||
1133         !query->GetValueForKeyAsString("triple", triple))
1134       continue;
1135 
1136     ModuleSpec matched_module_spec = GetModuleInfo(file, triple);
1137     if (!matched_module_spec.GetFileSpec())
1138       continue;
1139 
1140     const auto file_offset = matched_module_spec.GetObjectOffset();
1141     const auto file_size = matched_module_spec.GetObjectSize();
1142     const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
1143 
1144     if (uuid_str.empty())
1145       continue;
1146 
1147     JSONObject::SP response = std::make_shared<JSONObject>();
1148     response_array_sp->AppendObject(response);
1149     response->SetObject("uuid", std::make_shared<JSONString>(uuid_str));
1150     response->SetObject(
1151         "triple",
1152         std::make_shared<JSONString>(
1153             matched_module_spec.GetArchitecture().GetTriple().getTriple()));
1154     response->SetObject("file_path",
1155                         std::make_shared<JSONString>(
1156                             matched_module_spec.GetFileSpec().GetPath()));
1157     response->SetObject("file_offset",
1158                         std::make_shared<JSONNumber>(file_offset));
1159     response->SetObject("file_size", std::make_shared<JSONNumber>(file_size));
1160   }
1161 
1162   StreamString response;
1163   response_array_sp->Write(response);
1164   StreamGDBRemote escaped_response;
1165   escaped_response.PutEscapedBytes(response.GetString().data(),
1166                                    response.GetSize());
1167   return SendPacketNoLock(escaped_response.GetString());
1168 }
1169 
1170 void GDBRemoteCommunicationServerCommon::CreateProcessInfoResponse(
1171     const ProcessInstanceInfo &proc_info, StreamString &response) {
1172   response.Printf(
1173       "pid:%" PRIu64 ";ppid:%" PRIu64 ";uid:%i;gid:%i;euid:%i;egid:%i;",
1174       proc_info.GetProcessID(), proc_info.GetParentProcessID(),
1175       proc_info.GetUserID(), proc_info.GetGroupID(),
1176       proc_info.GetEffectiveUserID(), proc_info.GetEffectiveGroupID());
1177   response.PutCString("name:");
1178   response.PutStringAsRawHex8(proc_info.GetExecutableFile().GetCString());
1179   response.PutChar(';');
1180   const ArchSpec &proc_arch = proc_info.GetArchitecture();
1181   if (proc_arch.IsValid()) {
1182     const llvm::Triple &proc_triple = proc_arch.GetTriple();
1183     response.PutCString("triple:");
1184     response.PutStringAsRawHex8(proc_triple.getTriple());
1185     response.PutChar(';');
1186   }
1187 }
1188 
1189 void GDBRemoteCommunicationServerCommon::
1190     CreateProcessInfoResponse_DebugServerStyle(
1191         const ProcessInstanceInfo &proc_info, StreamString &response) {
1192   response.Printf("pid:%" PRIx64 ";parent-pid:%" PRIx64
1193                   ";real-uid:%x;real-gid:%x;effective-uid:%x;effective-gid:%x;",
1194                   proc_info.GetProcessID(), proc_info.GetParentProcessID(),
1195                   proc_info.GetUserID(), proc_info.GetGroupID(),
1196                   proc_info.GetEffectiveUserID(),
1197                   proc_info.GetEffectiveGroupID());
1198 
1199   const ArchSpec &proc_arch = proc_info.GetArchitecture();
1200   if (proc_arch.IsValid()) {
1201     const llvm::Triple &proc_triple = proc_arch.GetTriple();
1202 #if defined(__APPLE__)
1203     // We'll send cputype/cpusubtype.
1204     const uint32_t cpu_type = proc_arch.GetMachOCPUType();
1205     if (cpu_type != 0)
1206       response.Printf("cputype:%" PRIx32 ";", cpu_type);
1207 
1208     const uint32_t cpu_subtype = proc_arch.GetMachOCPUSubType();
1209     if (cpu_subtype != 0)
1210       response.Printf("cpusubtype:%" PRIx32 ";", cpu_subtype);
1211 
1212     const std::string vendor = proc_triple.getVendorName();
1213     if (!vendor.empty())
1214       response.Printf("vendor:%s;", vendor.c_str());
1215 #else
1216     // We'll send the triple.
1217     response.PutCString("triple:");
1218     response.PutStringAsRawHex8(proc_triple.getTriple());
1219     response.PutChar(';');
1220 #endif
1221     std::string ostype = proc_triple.getOSName();
1222     // Adjust so ostype reports ios for Apple/ARM and Apple/ARM64.
1223     if (proc_triple.getVendor() == llvm::Triple::Apple) {
1224       switch (proc_triple.getArch()) {
1225       case llvm::Triple::arm:
1226       case llvm::Triple::thumb:
1227       case llvm::Triple::aarch64:
1228         ostype = "ios";
1229         break;
1230       default:
1231         // No change.
1232         break;
1233       }
1234     }
1235     response.Printf("ostype:%s;", ostype.c_str());
1236 
1237     switch (proc_arch.GetByteOrder()) {
1238     case lldb::eByteOrderLittle:
1239       response.PutCString("endian:little;");
1240       break;
1241     case lldb::eByteOrderBig:
1242       response.PutCString("endian:big;");
1243       break;
1244     case lldb::eByteOrderPDP:
1245       response.PutCString("endian:pdp;");
1246       break;
1247     default:
1248       // Nothing.
1249       break;
1250     }
1251     // In case of MIPS64, pointer size is depend on ELF ABI For N32 the pointer
1252     // size is 4 and for N64 it is 8
1253     std::string abi = proc_arch.GetTargetABI();
1254     if (!abi.empty())
1255       response.Printf("elf_abi:%s;", abi.c_str());
1256     response.Printf("ptrsize:%d;", proc_arch.GetAddressByteSize());
1257   }
1258 }
1259 
1260 FileSpec GDBRemoteCommunicationServerCommon::FindModuleFile(
1261     const std::string &module_path, const ArchSpec &arch) {
1262 #ifdef __ANDROID__
1263   return HostInfoAndroid::ResolveLibraryPath(module_path, arch);
1264 #else
1265   FileSpec file_spec(module_path);
1266   FileSystem::Instance().Resolve(file_spec);
1267   return file_spec;
1268 #endif
1269 }
1270 
1271 ModuleSpec
1272 GDBRemoteCommunicationServerCommon::GetModuleInfo(llvm::StringRef module_path,
1273                                                   llvm::StringRef triple) {
1274   ArchSpec arch(triple);
1275 
1276   FileSpec req_module_path_spec(module_path);
1277   FileSystem::Instance().Resolve(req_module_path_spec);
1278 
1279   const FileSpec module_path_spec =
1280       FindModuleFile(req_module_path_spec.GetPath(), arch);
1281   const ModuleSpec module_spec(module_path_spec, arch);
1282 
1283   ModuleSpecList module_specs;
1284   if (!ObjectFile::GetModuleSpecifications(module_path_spec, 0, 0,
1285                                            module_specs))
1286     return ModuleSpec();
1287 
1288   ModuleSpec matched_module_spec;
1289   if (!module_specs.FindMatchingModuleSpec(module_spec, matched_module_spec))
1290     return ModuleSpec();
1291 
1292   return matched_module_spec;
1293 }
1294