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