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| 1 // Copyright (c) 2012 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/browser/enumerate_modules_model_win.h" | |
| 6 | |
| 7 #include <Tlhelp32.h> | |
| 8 #include <stddef.h> | |
| 9 #include <stdint.h> | |
| 10 #include <wintrust.h> | |
| 11 | |
| 12 #include <algorithm> | |
| 13 #include <memory> | |
| 14 | |
| 15 #include "base/bind.h" | |
| 16 #include "base/command_line.h" | |
| 17 #include "base/environment.h" | |
| 18 #include "base/file_version_info_win.h" | |
| 19 #include "base/files/file_path.h" | |
| 20 #include "base/i18n/case_conversion.h" | |
| 21 #include "base/macros.h" | |
| 22 #include "base/metrics/histogram.h" | |
| 23 #include "base/strings/string_number_conversions.h" | |
| 24 #include "base/strings/string_util.h" | |
| 25 #include "base/strings/utf_string_conversions.h" | |
| 26 #include "base/time/time.h" | |
| 27 #include "base/values.h" | |
| 28 #include "base/version.h" | |
| 29 #include "base/win/registry.h" | |
| 30 #include "base/win/scoped_handle.h" | |
| 31 #include "base/win/windows_version.h" | |
| 32 #include "chrome/browser/chrome_notification_types.h" | |
| 33 #include "chrome/browser/net/service_providers_win.h" | |
| 34 #include "chrome/common/chrome_constants.h" | |
| 35 #include "chrome/grit/generated_resources.h" | |
| 36 #include "content/public/browser/notification_service.h" | |
| 37 #include "crypto/sha2.h" | |
| 38 #include "ui/base/l10n/l10n_util.h" | |
| 39 | |
| 40 using content::BrowserThread; | |
| 41 | |
| 42 // The period of time (in milliseconds) to wait until checking to see if any | |
| 43 // incompatible modules exist. | |
| 44 static const int kModuleCheckDelayMs = 45 * 1000; | |
| 45 | |
| 46 // The path to the Shell Extension key in the Windows registry. | |
| 47 static const wchar_t kRegPath[] = | |
| 48 L"Software\\Microsoft\\Windows\\CurrentVersion\\Shell Extensions\\Approved"; | |
| 49 | |
| 50 // Short-hand for things on the blacklist you should simply get rid of. | |
| 51 static const ModuleEnumerator::RecommendedAction kUninstallLink = | |
| 52 static_cast<ModuleEnumerator::RecommendedAction>( | |
| 53 ModuleEnumerator::UNINSTALL | ModuleEnumerator::SEE_LINK); | |
| 54 | |
| 55 // Short-hand for things on the blacklist we are investigating and have info. | |
| 56 static const ModuleEnumerator::RecommendedAction kInvestigatingLink = | |
| 57 static_cast<ModuleEnumerator::RecommendedAction>( | |
| 58 ModuleEnumerator::INVESTIGATING | ModuleEnumerator::SEE_LINK); | |
| 59 | |
| 60 // A sort method that sorts by bad modules first, then by full name (including | |
| 61 // path). | |
| 62 static bool ModuleSort(const ModuleEnumerator::Module& a, | |
| 63 const ModuleEnumerator::Module& b) { | |
| 64 if (a.status != b.status) | |
| 65 return a.status > b.status; | |
| 66 | |
| 67 if (a.location == b.location) | |
| 68 return a.name < b.name; | |
| 69 | |
| 70 return a.location < b.location; | |
| 71 } | |
| 72 | |
| 73 namespace { | |
| 74 | |
| 75 // Used to protect the LoadedModuleVector which is accessed | |
| 76 // from both the UI thread and the FILE thread. | |
| 77 base::Lock* lock = NULL; | |
| 78 | |
| 79 // A struct to help de-duping modules before adding them to the enumerated | |
| 80 // modules vector. | |
| 81 struct FindModule { | |
| 82 public: | |
| 83 explicit FindModule(const ModuleEnumerator::Module& x) | |
| 84 : module(x) {} | |
| 85 bool operator()(const ModuleEnumerator::Module& module_in) const { | |
| 86 return (module.location == module_in.location) && | |
| 87 (module.name == module_in.name); | |
| 88 } | |
| 89 | |
| 90 const ModuleEnumerator::Module& module; | |
| 91 }; | |
| 92 | |
| 93 // Returns the long path name given a short path name. A short path name is a | |
| 94 // path that follows the 8.3 convention and has ~x in it. If the path is already | |
| 95 // a long path name, the function returns the current path without modification. | |
| 96 bool ConvertToLongPath(const base::string16& short_path, | |
| 97 base::string16* long_path) { | |
| 98 wchar_t long_path_buf[MAX_PATH]; | |
| 99 DWORD return_value = GetLongPathName(short_path.c_str(), long_path_buf, | |
| 100 MAX_PATH); | |
| 101 if (return_value != 0 && return_value < MAX_PATH) { | |
| 102 *long_path = long_path_buf; | |
| 103 return true; | |
| 104 } | |
| 105 | |
| 106 return false; | |
| 107 } | |
| 108 | |
| 109 } // namespace | |
| 110 | |
| 111 ModuleEnumerator::Module::Module() { | |
| 112 } | |
| 113 | |
| 114 ModuleEnumerator::Module::Module(const Module& rhs) = default; | |
| 115 | |
| 116 ModuleEnumerator::Module::Module(ModuleType type, | |
| 117 ModuleStatus status, | |
| 118 const base::string16& location, | |
| 119 const base::string16& name, | |
| 120 const base::string16& product_name, | |
| 121 const base::string16& description, | |
| 122 const base::string16& version, | |
| 123 const base::string16& digital_signer, | |
| 124 RecommendedAction recommended_action) | |
| 125 : type(type), | |
| 126 status(status), | |
| 127 location(location), | |
| 128 name(name), | |
| 129 product_name(product_name), | |
| 130 description(description), | |
| 131 version(version), | |
| 132 digital_signer(digital_signer), | |
| 133 recommended_action(recommended_action), | |
| 134 duplicate_count(0), | |
| 135 normalized(false) { | |
| 136 } | |
| 137 | |
| 138 ModuleEnumerator::Module::~Module() { | |
| 139 } | |
| 140 | |
| 141 // The browser process module blacklist. This lists modules that are known | |
| 142 // to cause compatibility issues within the browser process. When adding to this | |
| 143 // list, make sure that all paths are lower-case, in long pathname form, end | |
| 144 // with a slash and use environments variables (or just look at one of the | |
| 145 // comments below and keep it consistent with that). When adding an entry with | |
| 146 // an environment variable not currently used in the list below, make sure to | |
| 147 // update the list in PreparePathMappings. Filename, Description/Signer, and | |
| 148 // Location must be entered as hashes (see GenerateHash). Filename is mandatory. | |
| 149 // Entries without any Description, Signer info, or Location will never be | |
| 150 // marked as confirmed bad (only as suspicious). | |
| 151 const ModuleEnumerator::BlacklistEntry ModuleEnumerator::kModuleBlacklist[] = { | |
| 152 // NOTE: Please keep this list sorted by dll name, then location. | |
| 153 | |
| 154 // Version 3.2.1.6 seems to be implicated in most cases (and 3.2.2.2 in some). | |
| 155 // There is a more recent version available for download. | |
| 156 // accelerator.dll, "%programfiles%\\speedbit video accelerator\\". | |
| 157 { "7ba9402f", "c9132d48", "", "", "", ALL, kInvestigatingLink }, | |
| 158 | |
| 159 // apiqq0.dll, "%temp%\\". | |
| 160 { "26134911", "59145acf", "", "", "", ALL, kUninstallLink }, | |
| 161 | |
| 162 // arking0.dll, "%systemroot%\\system32\\". | |
| 163 { "f5d8f549", "23d01d5b", "", "", "", ALL, kUninstallLink }, | |
| 164 | |
| 165 // arking1.dll, "%systemroot%\\system32\\". | |
| 166 { "c60ca062", "23d01d5b", "", "", "", ALL, kUninstallLink }, | |
| 167 | |
| 168 // aswjsflt.dll, "%ProgramFiles%\\avast software\\avast\\", "AVAST Software". | |
| 169 // NOTE: The digital signature of the DLL is double null terminated. | |
| 170 // Avast Antivirus prior to version 8.0 would kill the Chrome child process | |
| 171 // when blocked from running. | |
| 172 { "2ea5422a", "6b3a1b00", "a7db0e0c", "", "8.0", XP, | |
| 173 static_cast<RecommendedAction>(UPDATE | SEE_LINK | NOTIFY_USER) }, | |
| 174 | |
| 175 // aswjsflt.dll, "%ProgramFiles%\\alwil software\\avast5\\", "AVAST Software". | |
| 176 // NOTE: The digital signature of the DLL is double null terminated. | |
| 177 // Avast Antivirus prior to version 8.0 would kill the Chrome child process | |
| 178 // when blocked from running. | |
| 179 { "2ea5422a", "d8686924", "a7db0e0c", "", "8.0", XP, | |
| 180 static_cast<RecommendedAction>(UPDATE | SEE_LINK | NOTIFY_USER) }, | |
| 181 | |
| 182 // Said to belong to Killer NIC from BigFoot Networks (not verified). Versions | |
| 183 // 6.0.0.7 and 6.0.0.10 implicated. | |
| 184 // bfllr.dll, "%systemroot%\\system32\\". | |
| 185 { "6bb57633", "23d01d5b", "", "", "", ALL, kInvestigatingLink }, | |
| 186 | |
| 187 // clickpotatolitesahook.dll, "". Different version each report. | |
| 188 { "0396e037.dll", "", "", "", "", ALL, kUninstallLink }, | |
| 189 | |
| 190 // cvasds0.dll, "%temp%\\". | |
| 191 { "5ce0037c", "59145acf", "", "", "", ALL, kUninstallLink }, | |
| 192 | |
| 193 // cwalsp.dll, "%systemroot%\\system32\\". | |
| 194 { "e579a039", "23d01d5b", "", "", "", ALL, kUninstallLink }, | |
| 195 | |
| 196 // datamngr.dll (1), "%programfiles%\\searchqu toolbar\\datamngr\\". | |
| 197 { "7add320b", "470a3da3", "", "", "", ALL, kUninstallLink }, | |
| 198 | |
| 199 // datamngr.dll (2), "%programfiles%\\windows searchqu toolbar\\". | |
| 200 { "7add320b", "7a3c8be3", "", "", "", ALL, kUninstallLink }, | |
| 201 | |
| 202 // dsoqq0.dll, "%temp%\\". | |
| 203 { "1c4df325", "59145acf", "", "", "", ALL, kUninstallLink }, | |
| 204 | |
| 205 // flt.dll, "%programfiles%\\tueagles\\". | |
| 206 { "6d01f4a1", "7935e9c2", "", "", "", ALL, kUninstallLink }, | |
| 207 | |
| 208 // This looks like a malware edition of a Brazilian Bank plugin, sometimes | |
| 209 // referred to as Malware.Banc.A. | |
| 210 // gbieh.dll, "%programfiles%\\gbplugin\\". | |
| 211 { "4cb4f2e3", "88e4a3b1", "", "", "", ALL, kUninstallLink }, | |
| 212 | |
| 213 // hblitesahook.dll. Each report has different version number in location. | |
| 214 { "5d10b363", "", "", "", "", ALL, kUninstallLink }, | |
| 215 | |
| 216 // icf.dll, "%systemroot%\\system32\\". | |
| 217 { "303825ed", "23d01d5b", "", "", "", ALL, INVESTIGATING }, | |
| 218 | |
| 219 // idmmbc.dll (IDM), "%systemroot%\\system32\\". See: http://crbug.com/26892/. | |
| 220 { "b8dce5c3", "23d01d5b", "", "", "6.03", ALL, | |
| 221 static_cast<RecommendedAction>(UPDATE | DISABLE) }, | |
| 222 | |
| 223 // imon.dll (NOD32), "%systemroot%\\system32\\". See: http://crbug.com/21715. | |
| 224 { "8f42f22e", "23d01d5b", "", "", "4.0", ALL, | |
| 225 static_cast<RecommendedAction>(UPDATE | DISABLE) }, | |
| 226 | |
| 227 // is3lsp.dll, "%commonprogramfiles%\\is3\\anti-spyware\\". | |
| 228 { "7ffbdce9", "bc5673f2", "", "", "", ALL, | |
| 229 static_cast<RecommendedAction>(UPDATE | DISABLE | SEE_LINK) }, | |
| 230 | |
| 231 // jsi.dll, "%programfiles%\\profilecraze\\". | |
| 232 { "f9555eea", "e3548061", "", "", "", ALL, kUninstallLink }, | |
| 233 | |
| 234 // kernel.dll, "%programfiles%\\contentwatch\\internet protection\\modules\\". | |
| 235 { "ead2768e", "4e61ce60", "", "", "", ALL, INVESTIGATING }, | |
| 236 | |
| 237 // mgking0.dll, "%systemroot%\\system32\\". | |
| 238 { "d0893e38", "23d01d5b", "", "", "", ALL, kUninstallLink }, | |
| 239 | |
| 240 // mgking0.dll, "%temp%\\". | |
| 241 { "d0893e38", "59145acf", "", "", "", ALL, kUninstallLink }, | |
| 242 | |
| 243 // mgking1.dll, "%systemroot%\\system32\\". | |
| 244 { "3e837222", "23d01d5b", "", "", "", ALL, kUninstallLink }, | |
| 245 | |
| 246 // mgking1.dll, "%temp%\\". | |
| 247 { "3e837222", "59145acf", "", "", "", ALL, kUninstallLink }, | |
| 248 | |
| 249 // mstcipha.ime, "%systemroot%\\system32\\". | |
| 250 { "5523579e", "23d01d5b", "", "", "", ALL, INVESTIGATING }, | |
| 251 | |
| 252 // mwtsp.dll, "%systemroot%\\system32\\". | |
| 253 { "9830bff6", "23d01d5b", "", "", "", ALL, kUninstallLink }, | |
| 254 | |
| 255 // nodqq0.dll, "%temp%\\". | |
| 256 { "b86ce04d", "59145acf", "", "", "", ALL, kUninstallLink }, | |
| 257 | |
| 258 // nProtect GameGuard Anti-cheat system. Every report has a different | |
| 259 // location, since it is installed into and run from a game folder. Various | |
| 260 // versions implicated. | |
| 261 // npggnt.des, no fixed location. | |
| 262 { "f2c8790d", "", "", "", "", ALL, kInvestigatingLink }, | |
| 263 | |
| 264 // nvlsp.dll, | |
| 265 // "%programfiles%\\nvidia corporation\\networkaccessmanager\\bin32\\". | |
| 266 { "37f907e2", "3ad0ff23", "", "", "", ALL, INVESTIGATING }, | |
| 267 | |
| 268 // post0.dll, "%systemroot%\\system32\\". | |
| 269 { "7405c0c8", "23d01d5b", "", "", "", ALL, kUninstallLink }, | |
| 270 | |
| 271 // questbrwsearch.dll, "%programfiles%\\questbrwsearch\\". | |
| 272 { "0953ed09", "f0d5eeda", "", "", "", ALL, kUninstallLink }, | |
| 273 | |
| 274 // questscan.dll, "%programfiles%\\questscan\\". | |
| 275 { "f4f3391e", "119d20f7", "", "", "", ALL, kUninstallLink }, | |
| 276 | |
| 277 // radhslib.dll (Naomi web filter), "%programfiles%\\rnamfler\\". | |
| 278 // See http://crbug.com/12517. | |
| 279 { "7edcd250", "0733dc3e", "", "", "", ALL, INVESTIGATING }, | |
| 280 | |
| 281 // rlls.dll, "%programfiles%\\relevantknowledge\\". | |
| 282 { "a1ed94a7", "ea9d6b36", "", "", "", ALL, kUninstallLink }, | |
| 283 | |
| 284 // rooksdol.dll, "%programfiles%\\trusteer\\rapport\\bin\\". | |
| 285 { "802aefef", "06120e13", "", "", "3.5.1008.40", ALL, UPDATE }, | |
| 286 | |
| 287 // scanquery.dll, "%programfiles%\\scanquery\\". | |
| 288 { "0b52d2ae", "a4cc88b1", "", "", "", ALL, kUninstallLink }, | |
| 289 | |
| 290 // sdata.dll, "%programdata%\\srtserv\\". | |
| 291 { "1936d5cc", "223c44be", "", "", "", ALL, kUninstallLink }, | |
| 292 | |
| 293 // searchtree.dll, | |
| 294 // "%programfiles%\\contentwatch\\internet protection\\modules\\". | |
| 295 { "f6915a31", "4e61ce60", "", "", "", ALL, INVESTIGATING }, | |
| 296 | |
| 297 // sgprxy.dll, "%commonprogramfiles%\\is3\\anti-spyware\\". | |
| 298 { "005965ea", "bc5673f2", "", "", "", ALL, INVESTIGATING }, | |
| 299 | |
| 300 // snxhk.dll, "%ProgramFiles%\\avast software\\avast\\", "AVAST Software". | |
| 301 // NOTE: The digital signature of the DLL is double null terminated. | |
| 302 // Avast Antivirus prior to version 8.0 would kill the Chrome child process | |
| 303 // when blocked from running. | |
| 304 { "46c16aa8", "6b3a1b00", "a7db0e0c", "", "8.0", XP, | |
| 305 static_cast<RecommendedAction>(UPDATE | SEE_LINK | NOTIFY_USER) }, | |
| 306 | |
| 307 // snxhk.dll, "%ProgramFiles%\\alwil software\\avast5\\", "AVAST Software". | |
| 308 // NOTE: The digital signature of the DLL is double null terminated. | |
| 309 // Avast Antivirus prior to version 8.0 would kill the Chrome child process | |
| 310 // when blocked from running. | |
| 311 { "46c16aa8", "d8686924", "a7db0e0c", "", "8.0", XP, | |
| 312 static_cast<RecommendedAction>(UPDATE | SEE_LINK | NOTIFY_USER) }, | |
| 313 | |
| 314 // sprotector.dll, "". Different location each report. | |
| 315 { "24555d74", "", "", "", "", ALL, kUninstallLink }, | |
| 316 | |
| 317 // swi_filter_0001.dll (Sophos Web Intelligence), | |
| 318 // "%programfiles%\\sophos\\sophos anti-virus\\web intelligence\\". | |
| 319 // A small random sample all showed version 1.0.5.0. | |
| 320 { "61112d7b", "25fb120f", "", "", "", ALL, kInvestigatingLink }, | |
| 321 | |
| 322 // twking0.dll, "%systemroot%\\system32\\". | |
| 323 { "0355549b", "23d01d5b", "", "", "", ALL, kUninstallLink }, | |
| 324 | |
| 325 // twking1.dll, "%systemroot%\\system32\\". | |
| 326 { "02e44508", "23d01d5b", "", "", "", ALL, kUninstallLink }, | |
| 327 | |
| 328 // vksaver.dll, "%systemroot%\\system32\\". | |
| 329 { "c4a784d5", "23d01d5b", "", "", "", ALL, kUninstallLink }, | |
| 330 | |
| 331 // vlsp.dll (Venturi Firewall?), "%systemroot%\\system32\\". | |
| 332 { "2e4eb93d", "23d01d5b", "", "", "", ALL, INVESTIGATING }, | |
| 333 | |
| 334 // vmn3_1dn.dll, "%appdata%\\roaming\\vmndtxtb\\". | |
| 335 { "bba2037d", "9ab68585", "", "", "", ALL, kUninstallLink }, | |
| 336 | |
| 337 // webanalyzer.dll, | |
| 338 // "%programfiles%\\contentwatch\\internet protection\\modules\\". | |
| 339 { "c70b697d", "4e61ce60", "", "", "", ALL, INVESTIGATING }, | |
| 340 | |
| 341 // wowst0.dll, "%systemroot%\\system32\\". | |
| 342 { "38ad9963", "23d01d5b", "", "", "", ALL, kUninstallLink }, | |
| 343 | |
| 344 // wxbase28u_vc_cw.dll, "%systemroot%\\system32\\". | |
| 345 { "e967210d", "23d01d5b", "", "", "", ALL, kUninstallLink }, | |
| 346 }; | |
| 347 | |
| 348 // Generates an 8 digit hash from the input given. | |
| 349 static void GenerateHash(const std::string& input, std::string* output) { | |
| 350 if (input.empty()) { | |
| 351 *output = ""; | |
| 352 return; | |
| 353 } | |
| 354 | |
| 355 uint8_t hash[4]; | |
| 356 crypto::SHA256HashString(input, hash, sizeof(hash)); | |
| 357 *output = base::ToLowerASCII(base::HexEncode(hash, sizeof(hash))); | |
| 358 } | |
| 359 | |
| 360 // ----------------------------------------------------------------------------- | |
| 361 | |
| 362 // static | |
| 363 void ModuleEnumerator::NormalizeModule(Module* module) { | |
| 364 base::string16 path = module->location; | |
| 365 if (!ConvertToLongPath(path, &module->location)) | |
| 366 module->location = path; | |
| 367 | |
| 368 module->location = base::i18n::ToLower(module->location); | |
| 369 | |
| 370 // Location contains the filename, so the last slash is where the path | |
| 371 // ends. | |
| 372 size_t last_slash = module->location.find_last_of(L"\\"); | |
| 373 if (last_slash != base::string16::npos) { | |
| 374 module->name = module->location.substr(last_slash + 1); | |
| 375 module->location = module->location.substr(0, last_slash + 1); | |
| 376 } else { | |
| 377 module->name = module->location; | |
| 378 module->location.clear(); | |
| 379 } | |
| 380 | |
| 381 // Some version strings have things like (win7_rtm.090713-1255) appended | |
| 382 // to them. Remove that. | |
| 383 size_t first_space = module->version.find_first_of(L" "); | |
| 384 if (first_space != base::string16::npos) | |
| 385 module->version = module->version.substr(0, first_space); | |
| 386 | |
| 387 module->normalized = true; | |
| 388 } | |
| 389 | |
| 390 // static | |
| 391 ModuleEnumerator::ModuleStatus ModuleEnumerator::Match( | |
| 392 const ModuleEnumerator::Module& module, | |
| 393 const ModuleEnumerator::BlacklistEntry& blacklisted) { | |
| 394 // All modules must be normalized before matching against blacklist. | |
| 395 DCHECK(module.normalized); | |
| 396 // Filename is mandatory and version should not contain spaces. | |
| 397 DCHECK(strlen(blacklisted.filename) > 0); | |
| 398 DCHECK(!strstr(blacklisted.version_from, " ")); | |
| 399 DCHECK(!strstr(blacklisted.version_to, " ")); | |
| 400 | |
| 401 base::win::Version version = base::win::GetVersion(); | |
| 402 switch (version) { | |
| 403 case base::win::VERSION_XP: | |
| 404 if (!(blacklisted.os & XP)) return NOT_MATCHED; | |
| 405 break; | |
| 406 default: | |
| 407 break; | |
| 408 } | |
| 409 | |
| 410 std::string filename_hash, location_hash; | |
| 411 GenerateHash(base::WideToUTF8(module.name), &filename_hash); | |
| 412 GenerateHash(base::WideToUTF8(module.location), &location_hash); | |
| 413 | |
| 414 // Filenames are mandatory. Location is mandatory if given. | |
| 415 if (filename_hash == blacklisted.filename && | |
| 416 (std::string(blacklisted.location).empty() || | |
| 417 location_hash == blacklisted.location)) { | |
| 418 // We have a name match against the blacklist (and possibly location match | |
| 419 // also), so check version. | |
| 420 Version module_version(base::UTF16ToASCII(module.version)); | |
| 421 Version version_min(blacklisted.version_from); | |
| 422 Version version_max(blacklisted.version_to); | |
| 423 bool version_ok = !version_min.IsValid() && !version_max.IsValid(); | |
| 424 if (!version_ok) { | |
| 425 bool too_low = version_min.IsValid() && | |
| 426 (!module_version.IsValid() || | |
| 427 module_version.CompareTo(version_min) < 0); | |
| 428 bool too_high = version_max.IsValid() && | |
| 429 (!module_version.IsValid() || | |
| 430 module_version.CompareTo(version_max) >= 0); | |
| 431 version_ok = !too_low && !too_high; | |
| 432 } | |
| 433 | |
| 434 if (version_ok) { | |
| 435 // At this point, the names match and there is no version specified | |
| 436 // or the versions also match. | |
| 437 | |
| 438 std::string desc_or_signer(blacklisted.desc_or_signer); | |
| 439 std::string signer_hash, description_hash; | |
| 440 GenerateHash(base::WideToUTF8(module.digital_signer), &signer_hash); | |
| 441 GenerateHash(base::WideToUTF8(module.description), &description_hash); | |
| 442 | |
| 443 // If signatures match (or both are empty), then we have a winner. | |
| 444 if (signer_hash == desc_or_signer) | |
| 445 return CONFIRMED_BAD; | |
| 446 | |
| 447 // If descriptions match (or both are empty) and the locations match, then | |
| 448 // we also have a confirmed match. | |
| 449 if (description_hash == desc_or_signer && | |
| 450 !location_hash.empty() && location_hash == blacklisted.location) | |
| 451 return CONFIRMED_BAD; | |
| 452 | |
| 453 // We are not sure, but it is likely bad. | |
| 454 return SUSPECTED_BAD; | |
| 455 } | |
| 456 } | |
| 457 | |
| 458 return NOT_MATCHED; | |
| 459 } | |
| 460 | |
| 461 ModuleEnumerator::ModuleEnumerator(EnumerateModulesModel* observer) | |
| 462 : enumerated_modules_(NULL), | |
| 463 observer_(observer), | |
| 464 limited_mode_(false), | |
| 465 callback_thread_id_(BrowserThread::ID_COUNT) { | |
| 466 } | |
| 467 | |
| 468 void ModuleEnumerator::ScanNow(ModulesVector* list, bool limited_mode) { | |
| 469 enumerated_modules_ = list; | |
| 470 | |
| 471 limited_mode_ = limited_mode; | |
| 472 | |
| 473 if (!limited_mode_) { | |
| 474 CHECK(BrowserThread::GetCurrentThreadIdentifier(&callback_thread_id_)); | |
| 475 BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE, | |
| 476 base::Bind(&ModuleEnumerator::ScanImpl, this)); | |
| 477 } else { | |
| 478 // Run it synchronously. | |
| 479 ScanImpl(); | |
| 480 } | |
| 481 } | |
| 482 | |
| 483 ModuleEnumerator::~ModuleEnumerator() { | |
| 484 } | |
| 485 | |
| 486 void ModuleEnumerator::ScanImpl() { | |
| 487 base::TimeTicks start_time = base::TimeTicks::Now(); | |
| 488 | |
| 489 enumerated_modules_->clear(); | |
| 490 | |
| 491 // Make sure the path mapping vector is setup so we can collapse paths. | |
| 492 PreparePathMappings(); | |
| 493 | |
| 494 // Enumerating loaded modules must happen first since the other types of | |
| 495 // modules check for duplication against the loaded modules. | |
| 496 base::TimeTicks checkpoint = base::TimeTicks::Now(); | |
| 497 EnumerateLoadedModules(); | |
| 498 base::TimeTicks checkpoint2 = base::TimeTicks::Now(); | |
| 499 UMA_HISTOGRAM_TIMES("Conflicts.EnumerateLoadedModules", | |
| 500 checkpoint2 - checkpoint); | |
| 501 | |
| 502 checkpoint = checkpoint2; | |
| 503 EnumerateShellExtensions(); | |
| 504 checkpoint2 = base::TimeTicks::Now(); | |
| 505 UMA_HISTOGRAM_TIMES("Conflicts.EnumerateShellExtensions", | |
| 506 checkpoint2 - checkpoint); | |
| 507 | |
| 508 checkpoint = checkpoint2; | |
| 509 EnumerateWinsockModules(); | |
| 510 checkpoint2 = base::TimeTicks::Now(); | |
| 511 UMA_HISTOGRAM_TIMES("Conflicts.EnumerateWinsockModules", | |
| 512 checkpoint2 - checkpoint); | |
| 513 | |
| 514 MatchAgainstBlacklist(); | |
| 515 | |
| 516 std::sort(enumerated_modules_->begin(), | |
| 517 enumerated_modules_->end(), ModuleSort); | |
| 518 | |
| 519 if (!limited_mode_) { | |
| 520 // Send a reply back on the UI thread. | |
| 521 BrowserThread::PostTask(callback_thread_id_, FROM_HERE, | |
| 522 base::Bind(&ModuleEnumerator::ReportBack, this)); | |
| 523 } else { | |
| 524 // We are on the main thread already. | |
| 525 ReportBack(); | |
| 526 } | |
| 527 | |
| 528 UMA_HISTOGRAM_TIMES("Conflicts.EnumerationTotalTime", | |
| 529 base::TimeTicks::Now() - start_time); | |
| 530 } | |
| 531 | |
| 532 void ModuleEnumerator::EnumerateLoadedModules() { | |
| 533 // Get all modules in the current process. | |
| 534 base::win::ScopedHandle snap(::CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, | |
| 535 ::GetCurrentProcessId())); | |
| 536 if (!snap.Get()) | |
| 537 return; | |
| 538 | |
| 539 // Walk the module list. | |
| 540 MODULEENTRY32 module = { sizeof(module) }; | |
| 541 if (!::Module32First(snap.Get(), &module)) | |
| 542 return; | |
| 543 | |
| 544 do { | |
| 545 // It would be weird to present chrome.exe as a loaded module. | |
| 546 if (_wcsicmp(chrome::kBrowserProcessExecutableName, module.szModule) == 0) | |
| 547 continue; | |
| 548 | |
| 549 Module entry; | |
| 550 entry.type = LOADED_MODULE; | |
| 551 entry.location = module.szExePath; | |
| 552 PopulateModuleInformation(&entry); | |
| 553 | |
| 554 NormalizeModule(&entry); | |
| 555 CollapsePath(&entry); | |
| 556 enumerated_modules_->push_back(entry); | |
| 557 } while (::Module32Next(snap.Get(), &module)); | |
| 558 } | |
| 559 | |
| 560 void ModuleEnumerator::EnumerateShellExtensions() { | |
| 561 ReadShellExtensions(HKEY_LOCAL_MACHINE); | |
| 562 ReadShellExtensions(HKEY_CURRENT_USER); | |
| 563 } | |
| 564 | |
| 565 void ModuleEnumerator::ReadShellExtensions(HKEY parent) { | |
| 566 base::win::RegistryValueIterator registration(parent, kRegPath); | |
| 567 while (registration.Valid()) { | |
| 568 std::wstring key(std::wstring(L"CLSID\\") + registration.Name() + | |
| 569 L"\\InProcServer32"); | |
| 570 base::win::RegKey clsid; | |
| 571 if (clsid.Open(HKEY_CLASSES_ROOT, key.c_str(), KEY_READ) != ERROR_SUCCESS) { | |
| 572 ++registration; | |
| 573 continue; | |
| 574 } | |
| 575 base::string16 dll; | |
| 576 if (clsid.ReadValue(L"", &dll) != ERROR_SUCCESS) { | |
| 577 ++registration; | |
| 578 continue; | |
| 579 } | |
| 580 clsid.Close(); | |
| 581 | |
| 582 Module entry; | |
| 583 entry.type = SHELL_EXTENSION; | |
| 584 entry.location = dll; | |
| 585 PopulateModuleInformation(&entry); | |
| 586 | |
| 587 NormalizeModule(&entry); | |
| 588 CollapsePath(&entry); | |
| 589 AddToListWithoutDuplicating(entry); | |
| 590 | |
| 591 ++registration; | |
| 592 } | |
| 593 } | |
| 594 | |
| 595 void ModuleEnumerator::EnumerateWinsockModules() { | |
| 596 // Add to this list the Winsock LSP DLLs. | |
| 597 WinsockLayeredServiceProviderList layered_providers; | |
| 598 GetWinsockLayeredServiceProviders(&layered_providers); | |
| 599 for (size_t i = 0; i < layered_providers.size(); ++i) { | |
| 600 Module entry; | |
| 601 entry.type = WINSOCK_MODULE_REGISTRATION; | |
| 602 entry.status = NOT_MATCHED; | |
| 603 entry.normalized = false; | |
| 604 entry.location = layered_providers[i].path; | |
| 605 entry.description = layered_providers[i].name; | |
| 606 entry.recommended_action = NONE; | |
| 607 entry.duplicate_count = 0; | |
| 608 | |
| 609 wchar_t expanded[MAX_PATH]; | |
| 610 DWORD size = ExpandEnvironmentStrings( | |
| 611 entry.location.c_str(), expanded, MAX_PATH); | |
| 612 if (size != 0 && size <= MAX_PATH) { | |
| 613 entry.digital_signer = | |
| 614 GetSubjectNameFromDigitalSignature(base::FilePath(expanded)); | |
| 615 } | |
| 616 entry.version = base::IntToString16(layered_providers[i].version); | |
| 617 | |
| 618 // Paths have already been collapsed. | |
| 619 NormalizeModule(&entry); | |
| 620 AddToListWithoutDuplicating(entry); | |
| 621 } | |
| 622 } | |
| 623 | |
| 624 void ModuleEnumerator::PopulateModuleInformation(Module* module) { | |
| 625 module->status = NOT_MATCHED; | |
| 626 module->duplicate_count = 0; | |
| 627 module->normalized = false; | |
| 628 module->digital_signer = | |
| 629 GetSubjectNameFromDigitalSignature(base::FilePath(module->location)); | |
| 630 module->recommended_action = NONE; | |
| 631 std::unique_ptr<FileVersionInfo> version_info( | |
| 632 FileVersionInfo::CreateFileVersionInfo(base::FilePath(module->location))); | |
| 633 if (version_info.get()) { | |
| 634 FileVersionInfoWin* version_info_win = | |
| 635 static_cast<FileVersionInfoWin*>(version_info.get()); | |
| 636 | |
| 637 VS_FIXEDFILEINFO* fixed_file_info = version_info_win->fixed_file_info(); | |
| 638 if (fixed_file_info) { | |
| 639 module->description = version_info_win->file_description(); | |
| 640 module->version = version_info_win->file_version(); | |
| 641 module->product_name = version_info_win->product_name(); | |
| 642 } | |
| 643 } | |
| 644 } | |
| 645 | |
| 646 void ModuleEnumerator::AddToListWithoutDuplicating(const Module& module) { | |
| 647 DCHECK(module.normalized); | |
| 648 // These are registered modules, not loaded modules so the same module | |
| 649 // can be registered multiple times, often dozens of times. There is no need | |
| 650 // to list each registration, so we just increment the count for each module | |
| 651 // that is counted multiple times. | |
| 652 ModulesVector::iterator iter; | |
| 653 iter = std::find_if(enumerated_modules_->begin(), | |
| 654 enumerated_modules_->end(), | |
| 655 FindModule(module)); | |
| 656 if (iter != enumerated_modules_->end()) { | |
| 657 iter->duplicate_count++; | |
| 658 iter->type = static_cast<ModuleType>(iter->type | module.type); | |
| 659 } else { | |
| 660 enumerated_modules_->push_back(module); | |
| 661 } | |
| 662 } | |
| 663 | |
| 664 void ModuleEnumerator::PreparePathMappings() { | |
| 665 path_mapping_.clear(); | |
| 666 | |
| 667 std::unique_ptr<base::Environment> environment(base::Environment::Create()); | |
| 668 std::vector<base::string16> env_vars; | |
| 669 env_vars.push_back(L"LOCALAPPDATA"); | |
| 670 env_vars.push_back(L"ProgramFiles"); | |
| 671 env_vars.push_back(L"ProgramData"); | |
| 672 env_vars.push_back(L"USERPROFILE"); | |
| 673 env_vars.push_back(L"SystemRoot"); | |
| 674 env_vars.push_back(L"TEMP"); | |
| 675 env_vars.push_back(L"TMP"); | |
| 676 env_vars.push_back(L"CommonProgramFiles"); | |
| 677 for (std::vector<base::string16>::const_iterator variable = env_vars.begin(); | |
| 678 variable != env_vars.end(); ++variable) { | |
| 679 std::string path; | |
| 680 if (environment->GetVar(base::UTF16ToASCII(*variable).c_str(), &path)) { | |
| 681 path_mapping_.push_back( | |
| 682 std::make_pair(base::i18n::ToLower(base::UTF8ToUTF16(path)) + L"\\", | |
| 683 L"%" + base::i18n::ToLower(*variable) + L"%")); | |
| 684 } | |
| 685 } | |
| 686 } | |
| 687 | |
| 688 void ModuleEnumerator::CollapsePath(Module* entry) { | |
| 689 // Take the path and see if we can use any of the substitution values | |
| 690 // from the vector constructed above to replace c:\windows with, for | |
| 691 // example, %systemroot%. The most collapsed path (the one with the | |
| 692 // minimum length) wins. | |
| 693 size_t min_length = MAXINT; | |
| 694 base::string16 location = entry->location; | |
| 695 for (PathMapping::const_iterator mapping = path_mapping_.begin(); | |
| 696 mapping != path_mapping_.end(); ++mapping) { | |
| 697 const base::string16& prefix = mapping->first; | |
| 698 if (base::StartsWith(base::i18n::ToLower(location), | |
| 699 base::i18n::ToLower(prefix), | |
| 700 base::CompareCase::SENSITIVE)) { | |
| 701 base::string16 new_location = mapping->second + | |
| 702 location.substr(prefix.length() - 1); | |
| 703 size_t length = new_location.length() - mapping->second.length(); | |
| 704 if (length < min_length) { | |
| 705 entry->location = new_location; | |
| 706 min_length = length; | |
| 707 } | |
| 708 } | |
| 709 } | |
| 710 } | |
| 711 | |
| 712 void ModuleEnumerator::MatchAgainstBlacklist() { | |
| 713 for (size_t m = 0; m < enumerated_modules_->size(); ++m) { | |
| 714 // Match this module against the blacklist. | |
| 715 Module* module = &(*enumerated_modules_)[m]; | |
| 716 module->status = GOOD; // We change this below potentially. | |
| 717 for (size_t i = 0; i < arraysize(kModuleBlacklist); ++i) { | |
| 718 #if !defined(NDEBUG) | |
| 719 // This saves time when constructing the blacklist. | |
| 720 std::string hashes(kModuleBlacklist[i].filename); | |
| 721 std::string hash1, hash2, hash3; | |
| 722 GenerateHash(kModuleBlacklist[i].filename, &hash1); | |
| 723 hashes += " - " + hash1; | |
| 724 GenerateHash(kModuleBlacklist[i].location, &hash2); | |
| 725 hashes += " - " + hash2; | |
| 726 GenerateHash(kModuleBlacklist[i].desc_or_signer, &hash3); | |
| 727 hashes += " - " + hash3; | |
| 728 #endif | |
| 729 | |
| 730 ModuleStatus status = Match(*module, kModuleBlacklist[i]); | |
| 731 if (status != NOT_MATCHED) { | |
| 732 // We have a match against the blacklist. Mark it as such. | |
| 733 module->status = status; | |
| 734 module->recommended_action = kModuleBlacklist[i].help_tip; | |
| 735 break; | |
| 736 } | |
| 737 } | |
| 738 | |
| 739 // Modules loaded from these locations are frequently malicious | |
| 740 // and notorious for changing frequently so they are not good candidates | |
| 741 // for blacklisting individually. Mark them as suspicious if we haven't | |
| 742 // classified them as bad yet. | |
| 743 if (module->status == NOT_MATCHED || module->status == GOOD) { | |
| 744 if (base::StartsWith(module->location, L"%temp%", | |
| 745 base::CompareCase::INSENSITIVE_ASCII) || | |
| 746 base::StartsWith(module->location, L"%tmp%", | |
| 747 base::CompareCase::INSENSITIVE_ASCII)) { | |
| 748 module->status = SUSPECTED_BAD; | |
| 749 } | |
| 750 } | |
| 751 } | |
| 752 } | |
| 753 | |
| 754 void ModuleEnumerator::ReportBack() { | |
| 755 if (!limited_mode_) | |
| 756 DCHECK_CURRENTLY_ON(callback_thread_id_); | |
| 757 observer_->DoneScanning(); | |
| 758 } | |
| 759 | |
| 760 base::string16 ModuleEnumerator::GetSubjectNameFromDigitalSignature( | |
| 761 const base::FilePath& filename) { | |
| 762 HCERTSTORE store = NULL; | |
| 763 HCRYPTMSG message = NULL; | |
| 764 | |
| 765 // Find the crypto message for this filename. | |
| 766 bool result = !!CryptQueryObject(CERT_QUERY_OBJECT_FILE, | |
| 767 filename.value().c_str(), | |
| 768 CERT_QUERY_CONTENT_FLAG_PKCS7_SIGNED_EMBED, | |
| 769 CERT_QUERY_FORMAT_FLAG_BINARY, | |
| 770 0, | |
| 771 NULL, | |
| 772 NULL, | |
| 773 NULL, | |
| 774 &store, | |
| 775 &message, | |
| 776 NULL); | |
| 777 if (!result) | |
| 778 return base::string16(); | |
| 779 | |
| 780 // Determine the size of the signer info data. | |
| 781 DWORD signer_info_size = 0; | |
| 782 result = !!CryptMsgGetParam(message, | |
| 783 CMSG_SIGNER_INFO_PARAM, | |
| 784 0, | |
| 785 NULL, | |
| 786 &signer_info_size); | |
| 787 if (!result) | |
| 788 return base::string16(); | |
| 789 | |
| 790 // Allocate enough space to hold the signer info. | |
| 791 std::unique_ptr<BYTE[]> signer_info_buffer(new BYTE[signer_info_size]); | |
| 792 CMSG_SIGNER_INFO* signer_info = | |
| 793 reinterpret_cast<CMSG_SIGNER_INFO*>(signer_info_buffer.get()); | |
| 794 | |
| 795 // Obtain the signer info. | |
| 796 result = !!CryptMsgGetParam(message, | |
| 797 CMSG_SIGNER_INFO_PARAM, | |
| 798 0, | |
| 799 signer_info, | |
| 800 &signer_info_size); | |
| 801 if (!result) | |
| 802 return base::string16(); | |
| 803 | |
| 804 // Search for the signer certificate. | |
| 805 CERT_INFO CertInfo = {0}; | |
| 806 PCCERT_CONTEXT cert_context = NULL; | |
| 807 CertInfo.Issuer = signer_info->Issuer; | |
| 808 CertInfo.SerialNumber = signer_info->SerialNumber; | |
| 809 | |
| 810 cert_context = CertFindCertificateInStore( | |
| 811 store, | |
| 812 X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, | |
| 813 0, | |
| 814 CERT_FIND_SUBJECT_CERT, | |
| 815 &CertInfo, | |
| 816 NULL); | |
| 817 if (!cert_context) | |
| 818 return base::string16(); | |
| 819 | |
| 820 // Determine the size of the Subject name. | |
| 821 DWORD subject_name_size = CertGetNameString( | |
| 822 cert_context, CERT_NAME_SIMPLE_DISPLAY_TYPE, 0, NULL, NULL, 0); | |
| 823 if (!subject_name_size) | |
| 824 return base::string16(); | |
| 825 | |
| 826 base::string16 subject_name; | |
| 827 subject_name.resize(subject_name_size); | |
| 828 | |
| 829 // Get subject name. | |
| 830 if (!(CertGetNameString(cert_context, | |
| 831 CERT_NAME_SIMPLE_DISPLAY_TYPE, | |
| 832 0, | |
| 833 NULL, | |
| 834 const_cast<LPWSTR>(subject_name.c_str()), | |
| 835 subject_name_size))) { | |
| 836 return base::string16(); | |
| 837 } | |
| 838 | |
| 839 return subject_name; | |
| 840 } | |
| 841 | |
| 842 // ---------------------------------------------------------------------------- | |
| 843 | |
| 844 // static | |
| 845 EnumerateModulesModel* EnumerateModulesModel::GetInstance() { | |
| 846 return base::Singleton<EnumerateModulesModel>::get(); | |
| 847 } | |
| 848 | |
| 849 bool EnumerateModulesModel::ShouldShowConflictWarning() const { | |
| 850 // If the user has acknowledged the conflict notification, then we don't need | |
| 851 // to show it again (because the scanning only happens once per the lifetime | |
| 852 // of the process). If we were to run the scanning more than once, then we'd | |
| 853 // need to clear the flag somewhere when we are ready to show it again. | |
| 854 if (conflict_notification_acknowledged_) | |
| 855 return false; | |
| 856 | |
| 857 return confirmed_bad_modules_detected_ > 0; | |
| 858 } | |
| 859 | |
| 860 void EnumerateModulesModel::AcknowledgeConflictNotification() { | |
| 861 if (!conflict_notification_acknowledged_) { | |
| 862 conflict_notification_acknowledged_ = true; | |
| 863 content::NotificationService::current()->Notify( | |
| 864 chrome::NOTIFICATION_MODULE_INCOMPATIBILITY_ICON_CHANGE, | |
| 865 content::Source<EnumerateModulesModel>(this), | |
| 866 content::NotificationService::NoDetails()); | |
| 867 } | |
| 868 } | |
| 869 | |
| 870 void EnumerateModulesModel::ScanNow() { | |
| 871 if (scanning_) | |
| 872 return; // A scan is already in progress. | |
| 873 | |
| 874 lock->Acquire(); // Balanced in DoneScanning(); | |
| 875 | |
| 876 scanning_ = true; | |
| 877 | |
| 878 // Instruct the ModuleEnumerator class to load this on the File thread. | |
| 879 // ScanNow does not block. | |
| 880 if (!module_enumerator_.get()) | |
| 881 module_enumerator_ = new ModuleEnumerator(this); | |
| 882 module_enumerator_->ScanNow(&enumerated_modules_, limited_mode_); | |
| 883 } | |
| 884 | |
| 885 base::ListValue* EnumerateModulesModel::GetModuleList() const { | |
| 886 if (scanning_) | |
| 887 return NULL; | |
| 888 | |
| 889 lock->Acquire(); | |
| 890 | |
| 891 if (enumerated_modules_.empty()) { | |
| 892 lock->Release(); | |
| 893 return NULL; | |
| 894 } | |
| 895 | |
| 896 base::ListValue* list = new base::ListValue(); | |
| 897 | |
| 898 for (ModuleEnumerator::ModulesVector::const_iterator module = | |
| 899 enumerated_modules_.begin(); | |
| 900 module != enumerated_modules_.end(); ++module) { | |
| 901 base::DictionaryValue* data = new base::DictionaryValue(); | |
| 902 data->SetInteger("type", module->type); | |
| 903 base::string16 type_string; | |
| 904 if ((module->type & ModuleEnumerator::LOADED_MODULE) == 0) { | |
| 905 // Module is not loaded, denote type of module. | |
| 906 if (module->type & ModuleEnumerator::SHELL_EXTENSION) | |
| 907 type_string = L"Shell Extension"; | |
| 908 if (module->type & ModuleEnumerator::WINSOCK_MODULE_REGISTRATION) { | |
| 909 if (!type_string.empty()) | |
| 910 type_string += L", "; | |
| 911 type_string += L"Winsock"; | |
| 912 } | |
| 913 // Must be one of the above type. | |
| 914 DCHECK(!type_string.empty()); | |
| 915 if (!limited_mode_) { | |
| 916 type_string += L" -- "; | |
| 917 type_string += l10n_util::GetStringUTF16(IDS_CONFLICTS_NOT_LOADED_YET); | |
| 918 } | |
| 919 } | |
| 920 data->SetString("type_description", type_string); | |
| 921 data->SetInteger("status", module->status); | |
| 922 data->SetString("location", module->location); | |
| 923 data->SetString("name", module->name); | |
| 924 data->SetString("product_name", module->product_name); | |
| 925 data->SetString("description", module->description); | |
| 926 data->SetString("version", module->version); | |
| 927 data->SetString("digital_signer", module->digital_signer); | |
| 928 | |
| 929 if (!limited_mode_) { | |
| 930 // Figure out the possible resolution help string. | |
| 931 base::string16 actions; | |
| 932 base::string16 separator = L" " + | |
| 933 l10n_util::GetStringUTF16( | |
| 934 IDS_CONFLICTS_CHECK_POSSIBLE_ACTION_SEPARATOR) + | |
| 935 L" "; | |
| 936 | |
| 937 if (module->recommended_action & ModuleEnumerator::INVESTIGATING) { | |
| 938 actions = l10n_util::GetStringUTF16( | |
| 939 IDS_CONFLICTS_CHECK_INVESTIGATING); | |
| 940 } else { | |
| 941 if (module->recommended_action & ModuleEnumerator::UNINSTALL) { | |
| 942 if (!actions.empty()) | |
| 943 actions += separator; | |
| 944 actions = l10n_util::GetStringUTF16( | |
| 945 IDS_CONFLICTS_CHECK_POSSIBLE_ACTION_UNINSTALL); | |
| 946 } | |
| 947 if (module->recommended_action & ModuleEnumerator::UPDATE) { | |
| 948 if (!actions.empty()) | |
| 949 actions += separator; | |
| 950 actions += l10n_util::GetStringUTF16( | |
| 951 IDS_CONFLICTS_CHECK_POSSIBLE_ACTION_UPDATE); | |
| 952 } | |
| 953 if (module->recommended_action & ModuleEnumerator::DISABLE) { | |
| 954 if (!actions.empty()) | |
| 955 actions += separator; | |
| 956 actions += l10n_util::GetStringUTF16( | |
| 957 IDS_CONFLICTS_CHECK_POSSIBLE_ACTION_DISABLE); | |
| 958 } | |
| 959 } | |
| 960 base::string16 possible_resolution; | |
| 961 if (!actions.empty()) { | |
| 962 possible_resolution = | |
| 963 l10n_util::GetStringUTF16(IDS_CONFLICTS_CHECK_POSSIBLE_ACTIONS) + | |
| 964 L" " + actions; | |
| 965 } | |
| 966 data->SetString("possibleResolution", possible_resolution); | |
| 967 data->SetString("help_url", | |
| 968 ConstructHelpCenterUrl(*module).spec().c_str()); | |
| 969 } | |
| 970 | |
| 971 list->Append(data); | |
| 972 } | |
| 973 | |
| 974 lock->Release(); | |
| 975 return list; | |
| 976 } | |
| 977 | |
| 978 GURL EnumerateModulesModel::GetFirstNotableConflict() { | |
| 979 lock->Acquire(); | |
| 980 GURL url; | |
| 981 | |
| 982 if (enumerated_modules_.empty()) { | |
| 983 lock->Release(); | |
| 984 return GURL(); | |
| 985 } | |
| 986 | |
| 987 for (ModuleEnumerator::ModulesVector::const_iterator module = | |
| 988 enumerated_modules_.begin(); | |
| 989 module != enumerated_modules_.end(); ++module) { | |
| 990 if (!(module->recommended_action & ModuleEnumerator::NOTIFY_USER)) | |
| 991 continue; | |
| 992 | |
| 993 url = ConstructHelpCenterUrl(*module); | |
| 994 DCHECK(url.is_valid()); | |
| 995 break; | |
| 996 } | |
| 997 | |
| 998 lock->Release(); | |
| 999 return url; | |
| 1000 } | |
| 1001 | |
| 1002 EnumerateModulesModel::EnumerateModulesModel() | |
| 1003 : limited_mode_(false), | |
| 1004 scanning_(false), | |
| 1005 conflict_notification_acknowledged_(false), | |
| 1006 confirmed_bad_modules_detected_(0), | |
| 1007 modules_to_notify_about_(0), | |
| 1008 suspected_bad_modules_detected_(0) { | |
| 1009 lock = new base::Lock(); | |
| 1010 } | |
| 1011 | |
| 1012 EnumerateModulesModel::~EnumerateModulesModel() { | |
| 1013 delete lock; | |
| 1014 } | |
| 1015 | |
| 1016 void EnumerateModulesModel::MaybePostScanningTask() { | |
| 1017 static bool done = false; | |
| 1018 if (!done) { | |
| 1019 done = true; | |
| 1020 if (base::win::GetVersion() == base::win::VERSION_XP) { | |
| 1021 check_modules_timer_.Start(FROM_HERE, | |
| 1022 base::TimeDelta::FromMilliseconds(kModuleCheckDelayMs), | |
| 1023 this, &EnumerateModulesModel::ScanNow); | |
| 1024 } | |
| 1025 } | |
| 1026 } | |
| 1027 | |
| 1028 void EnumerateModulesModel::DoneScanning() { | |
| 1029 confirmed_bad_modules_detected_ = 0; | |
| 1030 suspected_bad_modules_detected_ = 0; | |
| 1031 modules_to_notify_about_ = 0; | |
| 1032 for (ModuleEnumerator::ModulesVector::const_iterator module = | |
| 1033 enumerated_modules_.begin(); | |
| 1034 module != enumerated_modules_.end(); ++module) { | |
| 1035 if (module->status == ModuleEnumerator::CONFIRMED_BAD) { | |
| 1036 ++confirmed_bad_modules_detected_; | |
| 1037 if (module->recommended_action & ModuleEnumerator::NOTIFY_USER) | |
| 1038 ++modules_to_notify_about_; | |
| 1039 } else if (module->status == ModuleEnumerator::SUSPECTED_BAD) { | |
| 1040 ++suspected_bad_modules_detected_; | |
| 1041 if (module->recommended_action & ModuleEnumerator::NOTIFY_USER) | |
| 1042 ++modules_to_notify_about_; | |
| 1043 } | |
| 1044 } | |
| 1045 | |
| 1046 scanning_ = false; | |
| 1047 lock->Release(); | |
| 1048 | |
| 1049 UMA_HISTOGRAM_COUNTS_100("Conflicts.SuspectedBadModules", | |
| 1050 suspected_bad_modules_detected_); | |
| 1051 UMA_HISTOGRAM_COUNTS_100("Conflicts.ConfirmedBadModules", | |
| 1052 confirmed_bad_modules_detected_); | |
| 1053 | |
| 1054 // Notifications are not available in limited mode. | |
| 1055 if (limited_mode_) | |
| 1056 return; | |
| 1057 | |
| 1058 content::NotificationService::current()->Notify( | |
| 1059 chrome::NOTIFICATION_MODULE_LIST_ENUMERATED, | |
| 1060 content::Source<EnumerateModulesModel>(this), | |
| 1061 content::NotificationService::NoDetails()); | |
| 1062 } | |
| 1063 | |
| 1064 GURL EnumerateModulesModel::ConstructHelpCenterUrl( | |
| 1065 const ModuleEnumerator::Module& module) const { | |
| 1066 if (!(module.recommended_action & ModuleEnumerator::SEE_LINK) && | |
| 1067 !(module.recommended_action & ModuleEnumerator::NOTIFY_USER)) | |
| 1068 return GURL(); | |
| 1069 | |
| 1070 // Construct the needed hashes. | |
| 1071 std::string filename, location, description, signer; | |
| 1072 GenerateHash(base::WideToUTF8(module.name), &filename); | |
| 1073 GenerateHash(base::WideToUTF8(module.location), &location); | |
| 1074 GenerateHash(base::WideToUTF8(module.description), &description); | |
| 1075 GenerateHash(base::WideToUTF8(module.digital_signer), &signer); | |
| 1076 | |
| 1077 base::string16 url = | |
| 1078 l10n_util::GetStringFUTF16(IDS_HELP_CENTER_VIEW_CONFLICTS, | |
| 1079 base::ASCIIToUTF16(filename), base::ASCIIToUTF16(location), | |
| 1080 base::ASCIIToUTF16(description), base::ASCIIToUTF16(signer)); | |
| 1081 return GURL(base::UTF16ToUTF8(url)); | |
| 1082 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2098713003:
Moved a bunch of win-specific files to the new win folder in chrome/browser (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master