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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "components/crash/content/app/crash_keys_win.h" | |
| 6 | |
| 7 #include <algorithm> | |
| 8 | |
| 9 #include "base/base_switches.h" | |
| 10 #include "base/command_line.h" | |
| 11 #include "base/files/file_path.h" | |
| 12 #include "base/logging.h" | |
| 13 #include "base/strings/string_number_conversions.h" | |
| 14 #include "base/strings/stringprintf.h" | |
| 15 #include "components/crash/content/app/crash_reporter_client.h" | |
| 16 | |
| 17 namespace breakpad { | |
| 18 | |
| 19 using crash_reporter::CrashReporterClient; | |
| 20 | |
| 21 namespace { | |
| 22 | |
| 23 const size_t kMaxPluginPathLength = 256; | |
| 24 const size_t kMaxDynamicEntries = 256; | |
| 25 | |
| 26 } // namespace | |
| 27 | |
| 28 CrashKeysWin* CrashKeysWin::keeper_; | |
| 29 | |
| 30 CrashKeysWin::CrashKeysWin() : dynamic_keys_offset_(0) { | |
| 31 DCHECK_EQ(static_cast<CrashKeysWin*>(NULL), keeper_); | |
| 32 keeper_ = this; | |
| 33 } | |
| 34 | |
| 35 CrashKeysWin::~CrashKeysWin() { | |
| 36 DCHECK_EQ(this, keeper_); | |
| 37 keeper_ = NULL; | |
| 38 } | |
| 39 | |
| 40 // Appends the plugin path to |g_custom_entries|. | |
| 41 void CrashKeysWin::SetPluginPath(const std::wstring& path) { | |
| 42 if (path.size() > kMaxPluginPathLength) { | |
| 43 // If the path is too long, truncate from the start rather than the end, | |
| 44 // since we want to be able to recover the DLL name. | |
| 45 SetPluginPath(path.substr(path.size() - kMaxPluginPathLength)); | |
| 46 return; | |
| 47 } | |
| 48 | |
| 49 // The chunk size without terminator. | |
| 50 const size_t kChunkSize = static_cast<size_t>( | |
| 51 google_breakpad::CustomInfoEntry::kValueMaxLength - 1); | |
| 52 | |
| 53 int chunk_index = 0; | |
| 54 size_t chunk_start = 0; // Current position inside |path| | |
| 55 | |
| 56 for (chunk_start = 0; chunk_start < path.size(); chunk_index++) { | |
| 57 size_t chunk_length = std::min(kChunkSize, path.size() - chunk_start); | |
| 58 | |
| 59 custom_entries_.push_back(google_breakpad::CustomInfoEntry( | |
| 60 base::StringPrintf(L"plugin-path-chunk-%i", chunk_index + 1).c_str(), | |
| 61 path.substr(chunk_start, chunk_length).c_str())); | |
| 62 | |
| 63 chunk_start += chunk_length; | |
| 64 } | |
| 65 } | |
| 66 | |
| 67 // Appends the breakpad dump path to |g_custom_entries|. | |
| 68 void CrashKeysWin::SetBreakpadDumpPath(CrashReporterClient* crash_client) { | |
| 69 base::FilePath crash_dumps_dir_path; | |
| 70 if (crash_client->GetAlternativeCrashDumpLocation(&crash_dumps_dir_path)) { | |
| 71 custom_entries_.push_back(google_breakpad::CustomInfoEntry( | |
| 72 L"breakpad-dump-location", crash_dumps_dir_path.value().c_str())); | |
| 73 } | |
| 74 } | |
| 75 | |
| 76 // Returns the custom info structure based on the dll in parameter and the | |
| 77 // process type. | |
| 78 google_breakpad::CustomClientInfo* | |
| 79 CrashKeysWin::GetCustomInfo(const std::wstring& exe_path, | |
| 80 const std::wstring& type, | |
| 81 const std::wstring& profile_type, | |
| 82 base::CommandLine* cmd_line, | |
| 83 CrashReporterClient* crash_client) { | |
| 84 base::string16 version, product; | |
| 85 base::string16 special_build; | |
| 86 base::string16 channel_name; | |
| 87 | |
| 88 crash_client->GetProductNameAndVersion( | |
| 89 base::FilePath(exe_path), | |
| 90 &product, | |
| 91 &version, | |
| 92 &special_build, | |
| 93 &channel_name); | |
| 94 | |
| 95 // We only expect this method to be called once per process. | |
| 96 // Common enties | |
| 97 custom_entries_.push_back( | |
| 98 google_breakpad::CustomInfoEntry(L"ver", version.c_str())); | |
| 99 custom_entries_.push_back( | |
| 100 google_breakpad::CustomInfoEntry(L"prod", product.c_str())); | |
| 101 custom_entries_.push_back( | |
| 102 google_breakpad::CustomInfoEntry(L"plat", L"Win32")); | |
| 103 custom_entries_.push_back( | |
| 104 google_breakpad::CustomInfoEntry(L"ptype", type.c_str())); | |
| 105 custom_entries_.push_back( | |
| 106 google_breakpad::CustomInfoEntry( | |
| 107 L"pid", base::IntToString16(::GetCurrentProcessId()).c_str())); | |
| 108 custom_entries_.push_back( | |
| 109 google_breakpad::CustomInfoEntry(L"channel", channel_name.c_str())); | |
| 110 custom_entries_.push_back( | |
| 111 google_breakpad::CustomInfoEntry(L"profile-type", profile_type.c_str())); | |
| 112 | |
| 113 if (!special_build.empty()) { | |
| 114 custom_entries_.push_back( | |
| 115 google_breakpad::CustomInfoEntry(L"special", special_build.c_str())); | |
| 116 } | |
| 117 | |
| 118 if (type == L"plugin" || type == L"ppapi") { | |
| 119 std::wstring plugin_path = cmd_line->GetSwitchValueNative("plugin-path"); | |
| 120 if (!plugin_path.empty()) | |
| 121 SetPluginPath(plugin_path); | |
| 122 } | |
| 123 | |
| 124 // Check whether configuration management controls crash reporting. | |
| 125 bool crash_reporting_enabled = true; | |
| 126 bool controlled_by_policy = crash_client->ReportingIsEnforcedByPolicy( | |
| 127 &crash_reporting_enabled); | |
| 128 bool use_crash_service = !controlled_by_policy && | |
| 129 (cmd_line->HasSwitch(switches::kNoErrorDialogs) || | |
| 130 crash_client->IsRunningUnattended()); | |
| 131 if (use_crash_service) | |
| 132 SetBreakpadDumpPath(crash_client); | |
| 133 | |
| 134 // Create space for dynamic ad-hoc keys. The names and values are set using | |
| 135 // the API defined in base/debug/crash_logging.h. | |
| 136 dynamic_keys_offset_ = custom_entries_.size(); | |
| 137 for (size_t i = 0; i < kMaxDynamicEntries; ++i) { | |
| 138 // The names will be mutated as they are set. Un-numbered since these are | |
| 139 // merely placeholders. The name cannot be empty because Breakpad's | |
| 140 // HTTPUpload will interpret that as an invalid parameter. | |
| 141 custom_entries_.push_back( | |
| 142 google_breakpad::CustomInfoEntry(L"unspecified-crash-key", L"")); | |
| 143 } | |
| 144 | |
| 145 static google_breakpad::CustomClientInfo custom_client_info; | |
| 146 custom_client_info.entries = &custom_entries_.front(); | |
| 147 custom_client_info.count = custom_entries_.size(); | |
| 148 | |
| 149 return &custom_client_info; | |
| 150 } | |
| 151 | |
| 152 void CrashKeysWin::SetCrashKeyValue( | |
| 153 const std::wstring& key, const std::wstring& value) { | |
| 154 // CustomInfoEntry limits the length of key and value. If they exceed | |
| 155 // their maximum length the underlying string handling functions raise | |
| 156 // an exception and prematurely trigger a crash. Truncate here. | |
| 157 std::wstring safe_key(std::wstring(key).substr( | |
| 158 0, google_breakpad::CustomInfoEntry::kNameMaxLength - 1)); | |
| 159 std::wstring safe_value(std::wstring(value).substr( | |
| 160 0, google_breakpad::CustomInfoEntry::kValueMaxLength - 1)); | |
| 161 | |
| 162 // If we already have a value for this key, update it; otherwise, insert | |
| 163 // the new value if we have not exhausted the pre-allocated slots for dynamic | |
| 164 // entries. | |
| 165 base::AutoLock lock(lock_); | |
| 166 | |
| 167 DynamicEntriesMap::iterator it = dynamic_entries_.find(safe_key); | |
| 168 google_breakpad::CustomInfoEntry* entry = NULL; | |
| 169 if (it == dynamic_entries_.end()) { | |
| 170 if (dynamic_entries_.size() >= kMaxDynamicEntries) | |
| 171 return; | |
| 172 entry = &custom_entries_[dynamic_keys_offset_++]; | |
| 173 dynamic_entries_.insert(std::make_pair(safe_key, entry)); | |
| 174 } else { | |
| 175 entry = it->second; | |
| 176 } | |
| 177 | |
| 178 entry->set(safe_key.data(), safe_value.data()); | |
| 179 } | |
| 180 | |
| 181 void CrashKeysWin::ClearCrashKeyValue(const std::wstring& key) { | |
| 182 base::AutoLock lock(lock_); | |
| 183 | |
| 184 std::wstring key_string(key); | |
| 185 DynamicEntriesMap::iterator it = dynamic_entries_.find(key_string); | |
| 186 if (it == dynamic_entries_.end()) | |
| 187 return; | |
| 188 | |
| 189 it->second->set_value(NULL); | |
| 190 } | |
| 191 | |
| 192 } // namespace breakpad | |
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