chrome/common/crash_keys.cc

   1 // Copyright (c) 2013 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 "chrome/common/crash_keys.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/format_macros.h"
   9 #include "base/logging.h"
  10 #include "base/strings/string_split.h"
  11 #include "base/strings/string_util.h"
  12 #include "base/strings/stringprintf.h"
  13 #include "base/strings/utf_string_conversions.h"
  14 #include "chrome/installer/util/google_update_settings.h"
  15
  16 #if defined(OS_MACOSX)
  17 #include "breakpad/src/common/simple_string_dictionary.h"
  18 #elif defined(OS_WIN)
  19 #include "breakpad/src/client/windows/common/ipc_protocol.h"
  20 #elif defined(OS_CHROMEOS)
  21 #include "chrome/common/chrome_switches.h"
  22 #include "gpu/command_buffer/service/gpu_switches.h"
  23 #include "ui/gl/gl_switches.h"
  24 #endif
  25
  26 namespace crash_keys {
  27
  28 // A small crash key, guaranteed to never be split into multiple pieces.
  29 const size_t kSmallSize = 63;
  30
  31 // A medium crash key, which will be chunked on certain platforms but not
  32 // others. Guaranteed to never be more than four chunks.
  33 const size_t kMediumSize = kSmallSize * 4;
  34
  35 // A large crash key, which will be chunked on all platforms. This should be
  36 // used sparingly.
  37 const size_t kLargeSize = kSmallSize * 16;
  38
  39 // The maximum lengths specified by breakpad include the trailing NULL, so
  40 // the actual length of the string is one less.
  41 #if defined(OS_MACOSX)
  42 static const size_t kSingleChunkLength =
  43     google_breakpad::SimpleStringDictionary::value_size - 1;
  44 #elif defined(OS_WIN)
  45 static const size_t kSingleChunkLength =
  46     google_breakpad::CustomInfoEntry::kValueMaxLength - 1;
  47 #else
  48 static const size_t kSingleChunkLength = 63;
  49 #endif
  50
  51 // Guarantees for crash key sizes.
  52 COMPILE_ASSERT(kSmallSize <= kSingleChunkLength,
  53                crash_key_chunk_size_too_small);
  54 #if defined(OS_MACOSX)
  55 COMPILE_ASSERT(kMediumSize <= kSingleChunkLength,
  56                mac_has_medium_size_crash_key_chunks);
  57 #endif
  58
  59 const char kClientID[] = "guid";
  60
  61 const char kChannel[] = "channel";
  62
  63 const char kActiveURL[] = "url-chunk";
  64
  65 const char kSwitch[] = "switch-%" PRIuS;
  66 const char kNumSwitches[] = "num-switches";
  67
  68 const char kNumVariations[] = "num-experiments";
  69 const char kVariations[] = "variations";
  70
  71 const char kExtensionID[] = "extension-%" PRIuS;
  72 const char kNumExtensionsCount[] = "num-extensions";
  73
  74 const char kNumberOfViews[] = "num-views";
  75
  76 const char kShutdownType[] = "shutdown-type";
  77
  78 #if !defined(OS_ANDROID)
  79 const char kGPUVendorID[] = "gpu-venid";
  80 const char kGPUDeviceID[] = "gpu-devid";
  81 #endif
  82 const char kGPUDriverVersion[] = "gpu-driver";
  83 const char kGPUPixelShaderVersion[] = "gpu-psver";
  84 const char kGPUVertexShaderVersion[] = "gpu-vsver";
  85 #if defined(OS_MACOSX)
  86 const char kGPUGLVersion[] = "gpu-glver";
  87 #elif defined(OS_POSIX)
  88 const char kGPUVendor[] = "gpu-gl-vendor";
  89 const char kGPURenderer[] = "gpu-gl-renderer";
  90 #endif
  91
  92 const char kPrinterInfo[] = "prn-info-%" PRIuS;
  93
  94 #if defined(OS_CHROMEOS)
  95 const char kNumberOfUsers[] = "num-users";
  96 #endif
  97
  98 #if defined(OS_MACOSX)
  99 namespace mac {
 100
 101 const char kFirstNSException[] = "firstexception";
 102 const char kFirstNSExceptionTrace[] = "firstexception_bt";
 103
 104 const char kLastNSException[] = "lastexception";
 105 const char kLastNSExceptionTrace[] = "lastexception_bt";
 106
 107 const char kNSException[] = "nsexception";
 108 const char kNSExceptionTrace[] = "nsexception_bt";
 109
 110 const char kSendAction[] = "sendaction";
 111
 112 const char kZombie[] = "zombie";
 113 const char kZombieTrace[] = "zombie_dealloc_bt";
 114
 115 }  // namespace mac
 116 #endif
 117
 118 size_t RegisterChromeCrashKeys() {
 119   // The following keys may be chunked by the underlying crash logging system,
 120   // but ultimately constitute a single key-value pair.
 121   base::debug::CrashKey fixed_keys[] = {
 122     { kClientID, kSmallSize },
 123     { kChannel, kSmallSize },
 124     { kActiveURL, kLargeSize },
 125     { kNumSwitches, kSmallSize },
 126     { kNumVariations, kSmallSize },
 127     { kVariations, kLargeSize },
 128     { kNumExtensionsCount, kSmallSize },
 129     { kNumberOfViews, kSmallSize },
 130     { kShutdownType, kSmallSize },
 131 #if !defined(OS_ANDROID)
 132     { kGPUVendorID, kSmallSize },
 133     { kGPUDeviceID, kSmallSize },
 134 #endif
 135     { kGPUDriverVersion, kSmallSize },
 136     { kGPUPixelShaderVersion, kSmallSize },
 137     { kGPUVertexShaderVersion, kSmallSize },
 138 #if defined(OS_MACOSX)
 139     { kGPUGLVersion, kSmallSize },
 140 #elif defined(OS_POSIX)
 141     { kGPUVendor, kSmallSize },
 142     { kGPURenderer, kSmallSize },
 143 #endif
 144
 145     // base/:
 146     { "dm-usage", kSmallSize },
 147     // content/:
 148     { "ppapi_path", kMediumSize },
 149     { "subresource_url", kLargeSize },
 150 #if defined(OS_CHROMEOS)
 151     { kNumberOfUsers, kSmallSize },
 152 #endif
 153 #if defined(OS_MACOSX)
 154     { mac::kFirstNSException, kMediumSize },
 155     { mac::kFirstNSExceptionTrace, kMediumSize },
 156     { mac::kLastNSException, kMediumSize },
 157     { mac::kLastNSExceptionTrace, kMediumSize },
 158     { mac::kNSException, kMediumSize },
 159     { mac::kNSExceptionTrace, kMediumSize },
 160     { mac::kSendAction, kMediumSize },
 161     { mac::kZombie, kMediumSize },
 162     { mac::kZombieTrace, kMediumSize },
 163     // content/:
 164     { "channel_error_bt", kMediumSize },
 165     { "remove_route_bt", kMediumSize },
 166     { "rwhvm_window", kMediumSize },
 167     // media/:
 168     { "VideoCaptureDeviceQTKit", kSmallSize },
 169 #endif
 170   };
 171
 172   // This dynamic set of keys is used for sets of key value pairs when gathering
 173   // a collection of data, like command line switches or extension IDs.
 174   std::vector<base::debug::CrashKey> keys(
 175       fixed_keys, fixed_keys + arraysize(fixed_keys));
 176
 177   // Register the switches.
 178   {
 179     // The fixed_keys names are string constants. Use static storage for
 180     // formatted key names as well, since they will persist for the duration of
 181     // the program.
 182     static char formatted_keys[kSwitchesMaxCount][sizeof(kSwitch) + 1] =
 183         {{ 0 }};
 184     const size_t formatted_key_len = sizeof(formatted_keys[0]);
 185     for (size_t i = 0; i < kSwitchesMaxCount; ++i) {
 186       // Name the keys using 1-based indexing.
 187       int n = base::snprintf(
 188           formatted_keys[i], formatted_key_len, kSwitch, i + 1);
 189       DCHECK_GT(n, 0);
 190       base::debug::CrashKey crash_key = { formatted_keys[i], kSmallSize };
 191       keys.push_back(crash_key);
 192     }
 193   }
 194
 195   // Register the extension IDs.
 196   {
 197     static char formatted_keys[kExtensionIDMaxCount][sizeof(kExtensionID) + 1] =
 198         {{ 0 }};
 199     const size_t formatted_key_len = sizeof(formatted_keys[0]);
 200     for (size_t i = 0; i < kExtensionIDMaxCount; ++i) {
 201       int n = base::snprintf(
 202           formatted_keys[i], formatted_key_len, kExtensionID, i + 1);
 203       DCHECK_GT(n, 0);
 204       base::debug::CrashKey crash_key = { formatted_keys[i], kSmallSize };
 205       keys.push_back(crash_key);
 206     }
 207   }
 208
 209   // Register the printer info.
 210   {
 211     static char formatted_keys[kPrinterInfoCount][sizeof(kPrinterInfo) + 1] =
 212         {{ 0 }};
 213     const size_t formatted_key_len = sizeof(formatted_keys[0]);
 214     for (size_t i = 0; i < kPrinterInfoCount; ++i) {
 215       // Key names are 1-indexed.
 216       int n = base::snprintf(
 217           formatted_keys[i], formatted_key_len, kPrinterInfo, i + 1);
 218       DCHECK_GT(n, 0);
 219       base::debug::CrashKey crash_key = { formatted_keys[i], kSmallSize };
 220       keys.push_back(crash_key);
 221     }
 222   }
 223
 224   return base::debug::InitCrashKeys(&keys.at(0), keys.size(),
 225                                     kSingleChunkLength);
 226 }
 227
 228 void SetClientID(const std::string& client_id) {
 229   std::string guid(client_id);
 230   // Remove all instance of '-' char from the GUID. So BCD-WXY becomes BCDWXY.
 231   ReplaceSubstringsAfterOffset(&guid, 0, "-", "");
 232   if (guid.empty())
 233     return;
 234
 235   base::debug::SetCrashKeyValue(kClientID, guid);
 236   GoogleUpdateSettings::SetMetricsId(guid);
 237 }
 238
 239 static bool IsBoringSwitch(const std::string& flag) {
 240 #if defined(OS_WIN)
 241   return StartsWithASCII(flag, "--channel=", true) ||
 242
 243          // No point to including this since we already have a ptype field.
 244          StartsWithASCII(flag, "--type=", true) ||
 245
 246          // Not particularly interesting
 247          StartsWithASCII(flag, "--flash-broker=", true) ||
 248
 249          // Just about everything has this, don't bother.
 250          StartsWithASCII(flag, "/prefetch:", true) ||
 251
 252          // We handle the plugin path separately since it is usually too big
 253          // to fit in the switches (limited to 63 characters).
 254          StartsWithASCII(flag, "--plugin-path=", true) ||
 255
 256          // This is too big so we end up truncating it anyway.
 257          StartsWithASCII(flag, "--force-fieldtrials=", true) ||
 258
 259          // These surround the flags that were added by about:flags, it lets
 260          // you distinguish which flags were added manually via the command
 261          // line versus those added through about:flags. For the most part
 262          // we don't care how an option was enabled, so we strip these.
 263          // (If you need to know can always look at the PEB).
 264          flag == "--flag-switches-begin" ||
 265          flag == "--flag-switches-end";
 266 #elif defined(OS_CHROMEOS)
 267   static const char* kIgnoreSwitches[] = {
 268     ::switches::kEnableCompositingForFixedPosition,
 269     ::switches::kEnableImplSidePainting,
 270     ::switches::kEnableLogging,
 271     ::switches::kFlagSwitchesBegin,
 272     ::switches::kFlagSwitchesEnd,
 273     ::switches::kLoggingLevel,
 274     ::switches::kPpapiFlashArgs,
 275     ::switches::kPpapiFlashPath,
 276     ::switches::kRegisterPepperPlugins,
 277     ::switches::kUIPrioritizeInGpuProcess,
 278     ::switches::kUseGL,
 279     ::switches::kUserDataDir,
 280     ::switches::kV,
 281     ::switches::kVModule,
 282     // Cros/CC flgas are specified as raw strings to avoid dependency.
 283     "ash-default-wallpaper-large",
 284     "ash-default-wallpaper-small",
 285     "ash-guest-wallpaper-large",
 286     "ash-guest-wallpaper-small",
 287     "enterprise-enable-forced-re-enrollment",
 288     "enterprise-enrollment-initial-modulus",
 289     "enterprise-enrollment-modulus-limit",
 290     "login-profile",
 291     "login-user",
 292     "max-tiles-for-interest-area",
 293     "max-unused-resource-memory-usage-percentage",
 294     "termination-message-file",
 295     "use-cras",
 296   };
 297   if (!StartsWithASCII(flag, "--", true))
 298     return false;
 299   std::size_t end = flag.find("=");
 300   int len = (end == std::string::npos) ? flag.length() - 2 : end - 2;
 301   for (size_t i = 0; i < arraysize(kIgnoreSwitches); ++i) {
 302     if (flag.compare(2, len, kIgnoreSwitches[i]) == 0)
 303       return true;
 304   }
 305   return false;
 306 #else
 307   return false;
 308 #endif
 309 }
 310
 311 void SetSwitchesFromCommandLine(const CommandLine* command_line) {
 312   DCHECK(command_line);
 313   if (!command_line)
 314     return;
 315
 316   const CommandLine::StringVector& argv = command_line->argv();
 317
 318   // Set the number of switches in case size > kNumSwitches.
 319   base::debug::SetCrashKeyValue(kNumSwitches,
 320       base::StringPrintf("%" PRIuS, argv.size() - 1));
 321
 322   size_t key_i = 1;  // Key names are 1-indexed.
 323
 324   // Go through the argv, skipping the exec path.
 325   for (size_t i = 1; i < argv.size(); ++i) {
 326 #if defined(OS_WIN)
 327     std::string switch_str = base::WideToUTF8(argv[i]);
 328 #else
 329     std::string switch_str = argv[i];
 330 #endif
 331
 332     // Skip uninteresting switches.
 333     if (IsBoringSwitch(switch_str))
 334       continue;
 335
 336     // Stop if there are too many switches.
 337     if (i > crash_keys::kSwitchesMaxCount)
 338       break;
 339
 340     std::string key = base::StringPrintf(kSwitch, key_i++);
 341     base::debug::SetCrashKeyValue(key, switch_str);
 342   }
 343
 344   // Clear any remaining switches.
 345   for (; key_i <= kSwitchesMaxCount; ++key_i) {
 346     base::debug::ClearCrashKey(base::StringPrintf(kSwitch, key_i));
 347   }
 348 }
 349
 350 void SetVariationsList(const std::vector<std::string>& variations) {
 351   base::debug::SetCrashKeyValue(kNumVariations,
 352       base::StringPrintf("%" PRIuS, variations.size()));
 353
 354   std::string variations_string;
 355   variations_string.reserve(kLargeSize);
 356
 357   for (size_t i = 0; i < variations.size(); ++i) {
 358     const std::string& variation = variations[i];
 359     // Do not truncate an individual experiment.
 360     if (variations_string.size() + variation.size() >= kLargeSize)
 361       break;
 362     variations_string += variation;
 363     variations_string += ",";
 364   }
 365
 366   base::debug::SetCrashKeyValue(kVariations, variations_string);
 367 }
 368
 369 void SetActiveExtensions(const std::set<std::string>& extensions) {
 370   base::debug::SetCrashKeyValue(kNumExtensionsCount,
 371       base::StringPrintf("%" PRIuS, extensions.size()));
 372
 373   std::set<std::string>::const_iterator it = extensions.begin();
 374   for (size_t i = 0; i < kExtensionIDMaxCount; ++i) {
 375     std::string key = base::StringPrintf(kExtensionID, i + 1);
 376     if (it == extensions.end()) {
 377       base::debug::ClearCrashKey(key);
 378     } else {
 379       base::debug::SetCrashKeyValue(key, *it);
 380       ++it;
 381     }
 382   }
 383 }
 384
 385 ScopedPrinterInfo::ScopedPrinterInfo(const base::StringPiece& data) {
 386   std::vector<std::string> info;
 387   base::SplitString(data.as_string(), ';', &info);
 388   for (size_t i = 0; i < kPrinterInfoCount; ++i) {
 389     std::string key = base::StringPrintf(kPrinterInfo, i + 1);
 390     std::string value;
 391     if (i < info.size())
 392       value = info[i];
 393     base::debug::SetCrashKeyValue(key, value);
 394   }
 395 }
 396
 397 ScopedPrinterInfo::~ScopedPrinterInfo() {
 398   for (size_t i = 0; i < kPrinterInfoCount; ++i) {
 399     std::string key = base::StringPrintf(kPrinterInfo, i + 1);
 400     base::debug::ClearCrashKey(key);
 401   }
 402 }
 403
 404 }  // namespace crash_keys