Copy Crashpad into the Chrome tree instead of importing it via DEPS

third_party/crashpad/crashpad/snapshot/win/process_snapshot_win.cc

Index: third_party/crashpad/crashpad/snapshot/win/process_snapshot_win.cc
diff --git a/third_party/crashpad/crashpad/snapshot/win/process_snapshot_win.cc b/third_party/crashpad/crashpad/snapshot/win/process_snapshot_win.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8c184c26b9ab502b49048c32d93a21a8a4b737bc
--- /dev/null
+++ b/third_party/crashpad/crashpad/snapshot/win/process_snapshot_win.cc
@@ -0,0 +1,456 @@
+// Copyright 2015 The Crashpad Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "snapshot/win/process_snapshot_win.h"
+
+#include <algorithm>
+
+#include "base/logging.h"
+#include "base/strings/stringprintf.h"
+#include "base/strings/utf_string_conversions.h"
+#include "snapshot/win/memory_snapshot_win.h"
+#include "snapshot/win/module_snapshot_win.h"
+#include "util/win/registration_protocol_win.h"
+#include "util/win/time.h"
+
+namespace crashpad {
+
+ProcessSnapshotWin::ProcessSnapshotWin()
+    : ProcessSnapshot(),
+      system_(),
+      threads_(),
+      modules_(),
+      exception_(),
+      memory_map_(),
+      process_reader_(),
+      report_id_(),
+      client_id_(),
+      annotations_simple_map_(),
+      snapshot_time_(),
+      initialized_() {
+}
+
+ProcessSnapshotWin::~ProcessSnapshotWin() {
+}
+
+bool ProcessSnapshotWin::Initialize(
+    HANDLE process,
+    ProcessSuspensionState suspension_state,
+    WinVMAddress debug_critical_section_address) {
+  INITIALIZATION_STATE_SET_INITIALIZING(initialized_);
+
+  GetTimeOfDay(&snapshot_time_);
+
+  if (!process_reader_.Initialize(process, suspension_state))
+    return false;
+
+  system_.Initialize(&process_reader_);
+
+  if (process_reader_.Is64Bit()) {
+    InitializePebData<process_types::internal::Traits64>(
+        debug_critical_section_address);
+  } else {
+    InitializePebData<process_types::internal::Traits32>(
+        debug_critical_section_address);
+  }
+
+  InitializeThreads();
+  InitializeModules();
+
+  for (const MEMORY_BASIC_INFORMATION64& mbi :
+       process_reader_.GetProcessInfo().MemoryInfo()) {
+    memory_map_.push_back(new internal::MemoryMapRegionSnapshotWin(mbi));
+  }
+
+  INITIALIZATION_STATE_SET_VALID(initialized_);
+  return true;
+}
+
+bool ProcessSnapshotWin::InitializeException(
+    WinVMAddress exception_information_address) {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  DCHECK(!exception_);
+
+  ExceptionInformation exception_information;
+  if (!process_reader_.ReadMemory(exception_information_address,
+                                  sizeof(exception_information),
+                                  &exception_information)) {
+    LOG(WARNING) << "ReadMemory ExceptionInformation failed";
+    return false;
+  }
+
+  exception_.reset(new internal::ExceptionSnapshotWin());
+  if (!exception_->Initialize(&process_reader_,
+                              exception_information.thread_id,
+                              exception_information.exception_pointers)) {
+    exception_.reset();
+    return false;
+  }
+
+  return true;
+}
+
+void ProcessSnapshotWin::GetCrashpadOptions(
+    CrashpadInfoClientOptions* options) {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+
+  CrashpadInfoClientOptions local_options;
+
+  for (internal::ModuleSnapshotWin* module : modules_) {
+    CrashpadInfoClientOptions module_options;
+    module->GetCrashpadOptions(&module_options);
+
+    if (local_options.crashpad_handler_behavior == TriState::kUnset) {
+      local_options.crashpad_handler_behavior =
+          module_options.crashpad_handler_behavior;
+    }
+    if (local_options.system_crash_reporter_forwarding == TriState::kUnset) {
+      local_options.system_crash_reporter_forwarding =
+          module_options.system_crash_reporter_forwarding;
+    }
+
+    // If non-default values have been found for all options, the loop can end
+    // early.
+    if (local_options.crashpad_handler_behavior != TriState::kUnset &&
+        local_options.system_crash_reporter_forwarding != TriState::kUnset) {
+      break;
+    }
+  }
+
+  *options = local_options;
+}
+
+pid_t ProcessSnapshotWin::ProcessID() const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  return process_reader_.GetProcessInfo().ProcessID();
+}
+
+pid_t ProcessSnapshotWin::ParentProcessID() const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  return process_reader_.GetProcessInfo().ParentProcessID();
+}
+
+void ProcessSnapshotWin::SnapshotTime(timeval* snapshot_time) const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  *snapshot_time = snapshot_time_;
+}
+
+void ProcessSnapshotWin::ProcessStartTime(timeval* start_time) const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  process_reader_.StartTime(start_time);
+}
+
+void ProcessSnapshotWin::ProcessCPUTimes(timeval* user_time,
+                                         timeval* system_time) const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  process_reader_.CPUTimes(user_time, system_time);
+}
+
+void ProcessSnapshotWin::ReportID(UUID* report_id) const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  *report_id = report_id_;
+}
+
+void ProcessSnapshotWin::ClientID(UUID* client_id) const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  *client_id = client_id_;
+}
+
+const std::map<std::string, std::string>&
+ProcessSnapshotWin::AnnotationsSimpleMap() const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  return annotations_simple_map_;
+}
+
+const SystemSnapshot* ProcessSnapshotWin::System() const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  return &system_;
+}
+
+std::vector<const ThreadSnapshot*> ProcessSnapshotWin::Threads() const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  std::vector<const ThreadSnapshot*> threads;
+  for (internal::ThreadSnapshotWin* thread : threads_) {
+    threads.push_back(thread);
+  }
+  return threads;
+}
+
+std::vector<const ModuleSnapshot*> ProcessSnapshotWin::Modules() const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  std::vector<const ModuleSnapshot*> modules;
+  for (internal::ModuleSnapshotWin* module : modules_) {
+    modules.push_back(module);
+  }
+  return modules;
+}
+
+const ExceptionSnapshot* ProcessSnapshotWin::Exception() const {
+  return exception_.get();
+}
+
+std::vector<const MemoryMapRegionSnapshot*> ProcessSnapshotWin::MemoryMap()
+    const {
+  std::vector<const MemoryMapRegionSnapshot*> memory_map;
+  for (const auto& item : memory_map_)
+    memory_map.push_back(item);
+  return memory_map;
+}
+
+std::vector<HandleSnapshot> ProcessSnapshotWin::Handles() const {
+  std::vector<HandleSnapshot> result;
+  for (const auto& handle : process_reader_.GetProcessInfo().Handles()) {
+    HandleSnapshot snapshot;
+    // This is probably not strictly correct, but these are not localized so we
+    // expect them all to be in ASCII range anyway. This will need to be more
+    // carefully done if the object name is added.
+    snapshot.type_name = base::UTF16ToUTF8(handle.type_name);
+    snapshot.handle = handle.handle;
+    snapshot.attributes = handle.attributes;
+    snapshot.granted_access = handle.granted_access;
+    snapshot.pointer_count = handle.pointer_count;
+    snapshot.handle_count = handle.handle_count;
+    result.push_back(snapshot);
+  }
+  return result;
+}
+
+std::vector<const MemorySnapshot*> ProcessSnapshotWin::ExtraMemory() const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  std::vector<const MemorySnapshot*> extra_memory;
+  for (const auto& em : extra_memory_)
+    extra_memory.push_back(em);
+  return extra_memory;
+}
+
+void ProcessSnapshotWin::InitializeThreads() {
+  const std::vector<ProcessReaderWin::Thread>& process_reader_threads =
+      process_reader_.Threads();
+  for (const ProcessReaderWin::Thread& process_reader_thread :
+       process_reader_threads) {
+    auto thread = make_scoped_ptr(new internal::ThreadSnapshotWin());
+    if (thread->Initialize(&process_reader_, process_reader_thread)) {
+      threads_.push_back(thread.release());
+    }
+  }
+}
+
+void ProcessSnapshotWin::InitializeModules() {
+  const std::vector<ProcessInfo::Module>& process_reader_modules =
+      process_reader_.Modules();
+  for (const ProcessInfo::Module& process_reader_module :
+       process_reader_modules) {
+    auto module = make_scoped_ptr(new internal::ModuleSnapshotWin());
+    if (module->Initialize(&process_reader_, process_reader_module)) {
+      modules_.push_back(module.release());
+    }
+  }
+}
+
+template <class Traits>
+void ProcessSnapshotWin::InitializePebData(
+    WinVMAddress debug_critical_section_address) {
+  WinVMAddress peb_address;
+  WinVMSize peb_size;
+  process_reader_.GetProcessInfo().Peb(&peb_address, &peb_size);
+  AddMemorySnapshot(peb_address, peb_size, &extra_memory_);
+
+  process_types::PEB<Traits> peb_data;
+  if (!process_reader_.ReadMemory(peb_address, peb_size, &peb_data)) {
+    LOG(ERROR) << "ReadMemory PEB";
+    return;
+  }
+
+  process_types::PEB_LDR_DATA<Traits> peb_ldr_data;
+  AddMemorySnapshot(peb_data.Ldr, sizeof(peb_ldr_data), &extra_memory_);
+  if (!process_reader_.ReadMemory(
+          peb_data.Ldr, sizeof(peb_ldr_data), &peb_ldr_data)) {
+    LOG(ERROR) << "ReadMemory PEB_LDR_DATA";
+  } else {
+    // Walk the LDR structure to retrieve its pointed-to data.
+    AddMemorySnapshotForLdrLIST_ENTRY(
+        peb_ldr_data.InLoadOrderModuleList,
+        offsetof(process_types::LDR_DATA_TABLE_ENTRY<Traits>, InLoadOrderLinks),
+        &extra_memory_);
+    AddMemorySnapshotForLdrLIST_ENTRY(
+        peb_ldr_data.InMemoryOrderModuleList,
+        offsetof(process_types::LDR_DATA_TABLE_ENTRY<Traits>,
+                 InMemoryOrderLinks),
+        &extra_memory_);
+    AddMemorySnapshotForLdrLIST_ENTRY(
+        peb_ldr_data.InInitializationOrderModuleList,
+        offsetof(process_types::LDR_DATA_TABLE_ENTRY<Traits>,
+                 InInitializationOrderLinks),
+        &extra_memory_);
+  }
+
+  process_types::RTL_USER_PROCESS_PARAMETERS<Traits> process_parameters;
+  if (!process_reader_.ReadMemory(peb_data.ProcessParameters,
+                                  sizeof(process_parameters),
+                                  &process_parameters)) {
+    LOG(ERROR) << "ReadMemory RTL_USER_PROCESS_PARAMETERS";
+    return;
+  }
+  AddMemorySnapshot(
+      peb_data.ProcessParameters, sizeof(process_parameters), &extra_memory_);
+
+  AddMemorySnapshotForUNICODE_STRING(
+      process_parameters.CurrentDirectory.DosPath, &extra_memory_);
+  AddMemorySnapshotForUNICODE_STRING(process_parameters.DllPath,
+                                     &extra_memory_);
+  AddMemorySnapshotForUNICODE_STRING(process_parameters.ImagePathName,
+                                     &extra_memory_);
+  AddMemorySnapshotForUNICODE_STRING(process_parameters.CommandLine,
+                                     &extra_memory_);
+  AddMemorySnapshotForUNICODE_STRING(process_parameters.WindowTitle,
+                                     &extra_memory_);
+  AddMemorySnapshotForUNICODE_STRING(process_parameters.DesktopInfo,
+                                     &extra_memory_);
+  AddMemorySnapshotForUNICODE_STRING(process_parameters.ShellInfo,
+                                     &extra_memory_);
+  AddMemorySnapshotForUNICODE_STRING(process_parameters.RuntimeData,
+                                     &extra_memory_);
+  AddMemorySnapshot(
+      process_parameters.Environment,
+      DetermineSizeOfEnvironmentBlock(process_parameters.Environment),
+      &extra_memory_);
+
+  // Walk the loader lock which is directly referenced by the PEB.
+  ReadLock<Traits>(peb_data.LoaderLock, &extra_memory_);
+
+  // TODO(scottmg): Use debug_critical_section_address to walk the list of
+  // locks (see history of this file for walking code). In some configurations
+  // this can walk many thousands of locks, so we may want to get some
+  // annotation from the client for which locks to grab. Unfortunately, without
+  // walking the list, the !locks command in windbg won't work because it
+  // requires the lock pointed to by ntdll!RtlCriticalSectionList, which we
+  // won't have captured.
+}
+
+void ProcessSnapshotWin::AddMemorySnapshot(
+    WinVMAddress address,
+    WinVMSize size,
+    PointerVector<internal::MemorySnapshotWin>* into) {
+  if (size == 0)
+    return;
+
+  if (!process_reader_.GetProcessInfo().LoggingRangeIsFullyReadable(
+          CheckedRange<WinVMAddress, WinVMSize>(address, size))) {
+    return;
+  }
+
+  // If we have already added this exact range, don't add it again. This is
+  // useful for the LDR module lists which are a set of doubly-linked lists, all
+  // pointing to the same module name strings.
+  // TODO(scottmg): A more general version of this, handling overlapping,
+  // contained, etc. https://crashpad.chromium.org/bug/61.
+  for (const auto& memory_snapshot : *into) {
+    if (memory_snapshot->Address() == address &&
+        memory_snapshot->Size() == size) {
+      return;
+    }
+  }
+
+  internal::MemorySnapshotWin* memory_snapshot =
+      new internal::MemorySnapshotWin();
+  memory_snapshot->Initialize(&process_reader_, address, size);
+  into->push_back(memory_snapshot);
+}
+
+template <class Traits>
+void ProcessSnapshotWin::AddMemorySnapshotForUNICODE_STRING(
+    const process_types::UNICODE_STRING<Traits>& us,
+    PointerVector<internal::MemorySnapshotWin>* into) {
+  AddMemorySnapshot(us.Buffer, us.Length, into);
+}
+
+template <class Traits>
+void ProcessSnapshotWin::AddMemorySnapshotForLdrLIST_ENTRY(
+      const process_types::LIST_ENTRY<Traits>& le, size_t offset_of_member,
+      PointerVector<internal::MemorySnapshotWin>* into) {
+  // Walk the doubly-linked list of entries, adding the list memory itself, as
+  // well as pointed-to strings.
+  typename Traits::Pointer last = le.Blink;
+  process_types::LDR_DATA_TABLE_ENTRY<Traits> entry;
+  typename Traits::Pointer cur = le.Flink;
+  for (;;) {
+    // |cur| is the pointer to LIST_ENTRY embedded in the LDR_DATA_TABLE_ENTRY.
+    // So we need to offset back to the beginning of the structure.
+    if (!process_reader_.ReadMemory(
+            cur - offset_of_member, sizeof(entry), &entry)) {
+      return;
+    }
+    AddMemorySnapshot(cur - offset_of_member, sizeof(entry), into);
+    AddMemorySnapshotForUNICODE_STRING(entry.FullDllName, into);
+    AddMemorySnapshotForUNICODE_STRING(entry.BaseDllName, into);
+
+    process_types::LIST_ENTRY<Traits>* links =
+        reinterpret_cast<process_types::LIST_ENTRY<Traits>*>(
+            reinterpret_cast<unsigned char*>(&entry) + offset_of_member);
+    cur = links->Flink;
+    if (cur == last)
+      break;
+  }
+}
+
+WinVMSize ProcessSnapshotWin::DetermineSizeOfEnvironmentBlock(
+    WinVMAddress start_of_environment_block) {
+  // http://blogs.msdn.com/b/oldnewthing/archive/2010/02/03/9957320.aspx On
+  // newer OSs there's no stated limit, but in practice grabbing 32k characters
+  // should be more than enough.
+  std::wstring env_block;
+  env_block.resize(32768);
+  WinVMSize bytes_read = process_reader_.ReadAvailableMemory(
+      start_of_environment_block,
+      env_block.size() * sizeof(env_block[0]),
+      &env_block[0]);
+  env_block.resize(
+      static_cast<unsigned int>(bytes_read / sizeof(env_block[0])));
+  const wchar_t terminator[] = { 0, 0 };
+  size_t at = env_block.find(std::wstring(terminator, arraysize(terminator)));
+  if (at != std::wstring::npos)
+    env_block.resize(at + arraysize(terminator));
+
+  return env_block.size() * sizeof(env_block[0]);
+}
+
+template <class Traits>
+void ProcessSnapshotWin::ReadLock(
+    WinVMAddress start,
+    PointerVector<internal::MemorySnapshotWin>* into) {
+  // We're walking the RTL_CRITICAL_SECTION_DEBUG ProcessLocksList, but starting
+  // from an actual RTL_CRITICAL_SECTION, so start by getting to the first
+  // RTL_CRITICAL_SECTION_DEBUG.
+
+  process_types::RTL_CRITICAL_SECTION<Traits> critical_section;
+  if (!process_reader_.ReadMemory(
+          start, sizeof(critical_section), &critical_section)) {
+    LOG(ERROR) << "failed to read RTL_CRITICAL_SECTION";
+    return;
+  }
+
+  AddMemorySnapshot(
+      start, sizeof(process_types::RTL_CRITICAL_SECTION<Traits>), into);
+
+  const decltype(critical_section.DebugInfo) kInvalid =
+      static_cast<decltype(critical_section.DebugInfo)>(-1);
+  if (critical_section.DebugInfo == kInvalid)
+    return;
+
+  AddMemorySnapshot(critical_section.DebugInfo,
+                    sizeof(process_types::RTL_CRITICAL_SECTION_DEBUG<Traits>),
+                    into);
+}
+
+}  // namespace crashpad