1 files changed, 226 insertions, 0 deletions
diff --git a/externals/breakpad/src/client/windows/crash_generation/client_info.cc b/externals/breakpad/src/client/windows/crash_generation/client_info.cc
new file mode 100644
index 0000000000..61ee212626
--- /dev/null
+++ b/externals/breakpad/src/client/windows/crash_generation/client_info.cc
@@ -0,0 +1,226 @@
+// Copyright 2008 Google LLC
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google LLC nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>  // Must come first
+#endif
+
+#include "client/windows/crash_generation/client_info.h"
+#include "client/windows/common/ipc_protocol.h"
+
+static const wchar_t kCustomInfoProcessUptimeName[] = L"ptime";
+static const size_t kMaxCustomInfoEntries = 4096;
+
+namespace google_breakpad {
+
+ClientInfo::ClientInfo(CrashGenerationServer* crash_server,
+                       DWORD pid,
+                       MINIDUMP_TYPE dump_type,
+                       DWORD* thread_id,
+                       EXCEPTION_POINTERS** ex_info,
+                       MDRawAssertionInfo* assert_info,
+                       const CustomClientInfo& custom_client_info)
+    : crash_server_(crash_server),
+      pid_(pid),
+      dump_type_(dump_type),
+      ex_info_(ex_info),
+      assert_info_(assert_info),
+      custom_client_info_(custom_client_info),
+      thread_id_(thread_id),
+      process_handle_(NULL),
+      dump_requested_handle_(NULL),
+      dump_generated_handle_(NULL),
+      dump_request_wait_handle_(NULL),
+      process_exit_wait_handle_(NULL),
+      crash_id_(NULL) {
+  GetSystemTimeAsFileTime(&start_time_);
+}
+
+bool ClientInfo::Initialize() {
+  process_handle_ = OpenProcess(GENERIC_ALL, FALSE, pid_);
+  if (!process_handle_) {
+    return false;
+  }
+
+  // The crash_id will be the low order word of the process creation time.
+  FILETIME creation_time, exit_time, kernel_time, user_time;
+  if (GetProcessTimes(process_handle_, &creation_time, &exit_time,
+                      &kernel_time, &user_time)) {
+    start_time_ = creation_time;
+  }
+  crash_id_ = start_time_.dwLowDateTime;
+
+  dump_requested_handle_ = CreateEvent(NULL,    // Security attributes.
+                                       TRUE,    // Manual reset.
+                                       FALSE,   // Initial state.
+                                       NULL);   // Name.
+  if (!dump_requested_handle_) {
+    return false;
+  }
+
+  dump_generated_handle_ = CreateEvent(NULL,    // Security attributes.
+                                       TRUE,    // Manual reset.
+                                       FALSE,   // Initial state.
+                                       NULL);   // Name.
+  return dump_generated_handle_ != NULL;
+}
+
+void ClientInfo::UnregisterDumpRequestWaitAndBlockUntilNoPending() {
+  if (dump_request_wait_handle_) {
+    // Wait for callbacks that might already be running to finish.
+    UnregisterWaitEx(dump_request_wait_handle_, INVALID_HANDLE_VALUE);
+    dump_request_wait_handle_ = NULL;
+  }
+}
+
+void ClientInfo::UnregisterProcessExitWait(bool block_until_no_pending) {
+  if (process_exit_wait_handle_) {
+    if (block_until_no_pending) {
+      // Wait for the callback that might already be running to finish.
+      UnregisterWaitEx(process_exit_wait_handle_, INVALID_HANDLE_VALUE);
+    } else {
+      UnregisterWait(process_exit_wait_handle_);
+    }
+    process_exit_wait_handle_ = NULL;
+  }
+}
+
+ClientInfo::~ClientInfo() {
+  // Waiting for the callback to finish here is safe because ClientInfo's are
+  // never destroyed from the dump request handling callback.
+  UnregisterDumpRequestWaitAndBlockUntilNoPending();
+
+  // This is a little tricky because ClientInfo's may be destroyed by the same
+  // callback (OnClientEnd) and waiting for it to finish will cause a deadlock.
+  // Regardless of this complication, wait for any running callbacks to finish
+  // so that the common case is properly handled.  In order to avoid deadlocks,
+  // the OnClientEnd callback must call UnregisterProcessExitWait(false)
+  // before deleting the ClientInfo.
+  UnregisterProcessExitWait(true);
+
+  if (process_handle_) {
+    CloseHandle(process_handle_);
+  }
+
+  if (dump_requested_handle_) {
+    CloseHandle(dump_requested_handle_);
+  }
+
+  if (dump_generated_handle_) {
+    CloseHandle(dump_generated_handle_);
+  }
+}
+
+bool ClientInfo::GetClientExceptionInfo(EXCEPTION_POINTERS** ex_info) const {
+  SIZE_T bytes_count = 0;
+  if (!ReadProcessMemory(process_handle_,
+                         ex_info_,
+                         ex_info,
+                         sizeof(*ex_info),
+                         &bytes_count)) {
+    return false;
+  }
+
+  return bytes_count == sizeof(*ex_info);
+}
+
+bool ClientInfo::GetClientThreadId(DWORD* thread_id) const {
+  SIZE_T bytes_count = 0;
+  if (!ReadProcessMemory(process_handle_,
+                         thread_id_,
+                         thread_id,
+                         sizeof(*thread_id),
+                         &bytes_count)) {
+    return false;
+  }
+
+  return bytes_count == sizeof(*thread_id);
+}
+
+void ClientInfo::SetProcessUptime() {
+  FILETIME now = {0};
+  GetSystemTimeAsFileTime(&now);
+
+  ULARGE_INTEGER time_start;
+  time_start.HighPart = start_time_.dwHighDateTime;
+  time_start.LowPart = start_time_.dwLowDateTime;
+
+  ULARGE_INTEGER time_now;
+  time_now.HighPart = now.dwHighDateTime;
+  time_now.LowPart = now.dwLowDateTime;
+
+  // Calculate the delay and convert it from 100-nanoseconds to milliseconds.
+  __int64 delay = (time_now.QuadPart - time_start.QuadPart) / 10 / 1000;
+
+  // Convert it to a string.
+  wchar_t* value = custom_info_entries_.get()[custom_client_info_.count].value;
+  _i64tow_s(delay, value, CustomInfoEntry::kValueMaxLength, 10);
+}
+
+bool ClientInfo::PopulateCustomInfo() {
+  if (custom_client_info_.count > kMaxCustomInfoEntries)
+    return false;
+
+  SIZE_T bytes_count = 0;
+  SIZE_T read_count = sizeof(CustomInfoEntry) * custom_client_info_.count;
+
+  // If the scoped array for custom info already has an array, it will be
+  // the same size as what we need. This is because the number of custom info
+  // entries is always the same. So allocate memory only if scoped array has
+  // a NULL pointer.
+  if (!custom_info_entries_.get()) {
+    // Allocate an extra entry for reporting uptime for the client process.
+    custom_info_entries_.reset(
+        new CustomInfoEntry[custom_client_info_.count + 1]);
+    // Use the last element in the array for uptime.
+    custom_info_entries_.get()[custom_client_info_.count].set_name(
+        kCustomInfoProcessUptimeName);
+  }
+
+  if (!ReadProcessMemory(process_handle_,
+                         custom_client_info_.entries,
+                         custom_info_entries_.get(),
+                         read_count,
+                         &bytes_count)) {
+    return false;
+  }
+
+  SetProcessUptime();
+  return (bytes_count == read_count);
+}
+
+CustomClientInfo ClientInfo::GetCustomInfo() const {
+  CustomClientInfo custom_info;
+  custom_info.entries = custom_info_entries_.get();
+  // Add 1 to the count from the client process to account for extra entry for
+  // process uptime.
+  custom_info.count = custom_client_info_.count + 1;
+  return custom_info;
+}
+
+}  // namespace google_breakpad