crash_upload_list_win.cc revision 5821806d5e7f356e8fa4b058a389a808ea183019
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2011 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/browser/crash_upload_list_win.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/stringprintf.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/string_util.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/sys_string_conversions.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)CrashUploadListWin::CrashUploadListWin(Delegate* delegate) 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : CrashUploadList(delegate) {} 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void CrashUploadListWin::LoadCrashList() { 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::vector<uint8> buffer(1024); 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HANDLE event_log = OpenEventLog(NULL, L"Application"); 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event_log) { 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) while (true) { 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD bytes_read; 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD bytes_needed; 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) BOOL success = 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReadEventLog(event_log, 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EVENTLOG_SEQUENTIAL_READ | EVENTLOG_BACKWARDS_READ, 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 0, 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) &buffer[0], 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) buffer.size(), 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) &bytes_read, 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) &bytes_needed); 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (success) { 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD record_offset = 0; 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The ReadEventLog() API docs imply, but do not explicitly state that 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // partial records will not be returned. Use DCHECK() to affirm this. 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) while (record_offset < bytes_read) { 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(record_offset + sizeof(EVENTLOGRECORD) <= bytes_read); 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EVENTLOGRECORD* record = (EVENTLOGRECORD*)&buffer[record_offset]; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(record_offset + record->Length <= bytes_read); 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (IsPossibleCrashLogRecord(record)) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ProcessPossibleCrashLogRecord(record); 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) record_offset += record->Length; 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) { 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Resize buffer to the required minimum size. 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) buffer.resize(bytes_needed); 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Stop on any other error, including the expected case 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // of ERROR_HANDLE_EOF. 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(GetLastError() == ERROR_HANDLE_EOF); 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CloseEventLog(event_log); 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool CrashUploadListWin::IsPossibleCrashLogRecord( 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EVENTLOGRECORD* record) const { 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LPWSTR provider_name = (LPWSTR)((uint8*)record + sizeof(EVENTLOGRECORD)); 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return !wcscmp(L"Chrome", provider_name) && 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) record->EventType == EVENTLOG_INFORMATION_TYPE && 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) record->NumStrings >= 1; 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void CrashUploadListWin::ProcessPossibleCrashLogRecord(EVENTLOGRECORD* record) { 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Add the crash if the message matches the expected pattern. 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const std::wstring pattern_prefix(L"Id="); 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const std::wstring pattern_suffix(L"."); 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::wstring message((LPWSTR)((uint8*)record + record->StringOffset)); 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t start_index = message.find(pattern_prefix); 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (start_index != std::wstring::npos) { 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) start_index += pattern_prefix.size(); 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t end_index = message.find(pattern_suffix, start_index); 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (end_index != std::wstring::npos) { 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::wstring crash_id = 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) message.substr(start_index, end_index - start_index); 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) crashes().push_back( 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CrashInfo(base::SysWideToUTF8(crash_id), 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Time::FromDoubleT(record->TimeGenerated))); 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 81