chrome/common/localized_error.cc

   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/common/localized_error.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/i18n/rtl.h"
   9 #include "base/logging.h"
  10 #include "base/metrics/field_trial.h"
  11 #include "base/strings/string16.h"
  12 #include "base/strings/string_number_conversions.h"
  13 #include "base/strings/string_util.h"
  14 #include "base/strings/utf_string_conversions.h"
  15 #include "base/values.h"
  16 #include "chrome/common/chrome_switches.h"
  17 #include "chrome/grit/chromium_strings.h"
  18 #include "chrome/grit/generated_resources.h"
  19 #include "components/error_page/common/error_page_params.h"
  20 #include "components/error_page/common/net_error_info.h"
  21 #include "components/url_formatter/url_formatter.h"
  22 #include "grit/components_chromium_strings.h"
  23 #include "grit/components_google_chrome_strings.h"
  24 #include "net/base/escape.h"
  25 #include "net/base/net_errors.h"
  26 #include "third_party/WebKit/public/platform/WebURLError.h"
  27 #include "ui/base/l10n/l10n_util.h"
  28 #include "ui/base/webui/web_ui_util.h"
  29
  30 #if defined(OS_WIN)
  31 #include "base/win/windows_version.h"
  32 #endif
  33
  34 #if defined(OS_CHROMEOS)
  35 #include "base/command_line.h"
  36 #include "chrome/common/chrome_switches.h"
  37 #endif
  38
  39 using blink::WebURLError;
  40
  41 // Some error pages have no details.
  42 const unsigned int kErrorPagesNoDetails = 0;
  43
  44 namespace {
  45
  46 static const char kRedirectLoopLearnMoreUrl[] =
  47     "https://support.google.com/chrome/answer/95626";
  48 static const char kWeakDHKeyLearnMoreUrl[] =
  49     "https://www.chromium.org/administrators/"
  50     "err_ssl_weak_server_ephemeral_dh_key";
  51 static const char kCachedCopyButtonFieldTrial[] =
  52     "EnableGoogleCachedCopyTextExperiment";
  53 static const char kCachedCopyButtonExpTypeControl[] = "control";
  54 static const int kGoogleCachedCopySuggestionType = 0;
  55
  56 enum NAV_SUGGESTIONS {
  57   SUGGEST_NONE                  = 0,
  58   SUGGEST_RELOAD                = 1 << 0,
  59   SUGGEST_CHECK_CONNECTION      = 1 << 1,
  60   SUGGEST_DNS_CONFIG            = 1 << 2,
  61   SUGGEST_FIREWALL_CONFIG       = 1 << 3,
  62   SUGGEST_PROXY_CONFIG          = 1 << 4,
  63   SUGGEST_DISABLE_EXTENSION     = 1 << 5,
  64   SUGGEST_LEARNMORE             = 1 << 6,
  65   SUGGEST_VIEW_POLICIES         = 1 << 7,
  66   SUGGEST_CONTACT_ADMINISTRATOR = 1 << 8,
  67 };
  68
  69 struct LocalizedErrorMap {
  70   int error_code;
  71   unsigned int title_resource_id;
  72   unsigned int heading_resource_id;
  73   // Detailed summary used when the error is in the main frame.
  74   unsigned int summary_resource_id;
  75   // Short one sentence description shown on mouse over when the error is in
  76   // a frame.
  77   unsigned int details_resource_id;
  78   int suggestions;  // Bitmap of SUGGEST_* values.
  79 };
  80
  81 const LocalizedErrorMap net_error_options[] = {
  82   {net::ERR_TIMED_OUT,
  83    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
  84    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
  85    IDS_ERRORPAGES_SUMMARY_TIMED_OUT,
  86    IDS_ERRORPAGES_DETAILS_TIMED_OUT,
  87    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG |
  88        SUGGEST_PROXY_CONFIG,
  89   },
  90   {net::ERR_CONNECTION_TIMED_OUT,
  91    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
  92    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
  93    IDS_ERRORPAGES_SUMMARY_TIMED_OUT,
  94    IDS_ERRORPAGES_DETAILS_TIMED_OUT,
  95    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG |
  96        SUGGEST_PROXY_CONFIG,
  97   },
  98   {net::ERR_CONNECTION_CLOSED,
  99    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 100    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 101    IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
 102    IDS_ERRORPAGES_DETAILS_CONNECTION_CLOSED,
 103    SUGGEST_RELOAD,
 104   },
 105   {net::ERR_CONNECTION_RESET,
 106    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 107    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 108    IDS_ERRORPAGES_SUMMARY_CONNECTION_RESET,
 109    IDS_ERRORPAGES_DETAILS_CONNECTION_RESET,
 110    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG |
 111        SUGGEST_PROXY_CONFIG,
 112   },
 113   {net::ERR_CONNECTION_REFUSED,
 114    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 115    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 116    IDS_ERRORPAGES_SUMMARY_CONNECTION_REFUSED,
 117    IDS_ERRORPAGES_DETAILS_CONNECTION_REFUSED,
 118    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG |
 119        SUGGEST_PROXY_CONFIG,
 120   },
 121   {net::ERR_CONNECTION_FAILED,
 122    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 123    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 124    IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
 125    IDS_ERRORPAGES_DETAILS_CONNECTION_FAILED,
 126    SUGGEST_RELOAD,
 127   },
 128   {net::ERR_NAME_NOT_RESOLVED,
 129    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 130    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 131    IDS_ERRORPAGES_SUMMARY_NAME_NOT_RESOLVED,
 132    IDS_ERRORPAGES_DETAILS_NAME_NOT_RESOLVED,
 133    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_DNS_CONFIG |
 134        SUGGEST_FIREWALL_CONFIG | SUGGEST_PROXY_CONFIG,
 135   },
 136   {net::ERR_ICANN_NAME_COLLISION,
 137    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 138    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 139    IDS_ERRORPAGES_SUMMARY_ICANN_NAME_COLLISION,
 140    IDS_ERRORPAGES_DETAILS_ICANN_NAME_COLLISION,
 141    SUGGEST_NONE,
 142   },
 143   {net::ERR_ADDRESS_UNREACHABLE,
 144    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 145    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 146    IDS_ERRORPAGES_SUMMARY_ADDRESS_UNREACHABLE,
 147    IDS_ERRORPAGES_DETAILS_ADDRESS_UNREACHABLE,
 148    SUGGEST_RELOAD | SUGGEST_FIREWALL_CONFIG | SUGGEST_PROXY_CONFIG,
 149   },
 150   {net::ERR_NETWORK_ACCESS_DENIED,
 151    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 152    IDS_ERRORPAGES_HEADING_NETWORK_ACCESS_DENIED,
 153    IDS_ERRORPAGES_SUMMARY_NETWORK_ACCESS_DENIED,
 154    IDS_ERRORPAGES_DETAILS_NETWORK_ACCESS_DENIED,
 155    SUGGEST_FIREWALL_CONFIG,
 156   },
 157   {net::ERR_PROXY_CONNECTION_FAILED,
 158    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 159    IDS_ERRORPAGES_HEADING_PROXY_CONNECTION_FAILED,
 160    IDS_ERRORPAGES_SUMMARY_PROXY_CONNECTION_FAILED,
 161    IDS_ERRORPAGES_DETAILS_PROXY_CONNECTION_FAILED,
 162    SUGGEST_PROXY_CONFIG,
 163   },
 164   {net::ERR_INTERNET_DISCONNECTED,
 165    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 166    IDS_ERRORPAGES_HEADING_INTERNET_DISCONNECTED,
 167    IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED,
 168    IDS_ERRORPAGES_DETAILS_INTERNET_DISCONNECTED,
 169    SUGGEST_NONE,
 170   },
 171   {net::ERR_FILE_NOT_FOUND,
 172    IDS_ERRORPAGES_TITLE_NOT_FOUND,
 173    IDS_ERRORPAGES_HEADING_NOT_FOUND,
 174    IDS_ERRORPAGES_SUMMARY_NOT_FOUND,
 175    IDS_ERRORPAGES_DETAILS_FILE_NOT_FOUND,
 176    SUGGEST_NONE,
 177   },
 178   {net::ERR_CACHE_MISS,
 179    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 180    IDS_ERRORPAGES_HEADING_CACHE_MISS,
 181    IDS_ERRORPAGES_SUMMARY_CACHE_MISS,
 182    IDS_ERRORPAGES_DETAILS_CACHE_MISS,
 183    SUGGEST_RELOAD,
 184   },
 185   {net::ERR_CACHE_READ_FAILURE,
 186    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 187    IDS_ERRORPAGES_HEADING_CACHE_READ_FAILURE,
 188    IDS_ERRORPAGES_SUMMARY_CACHE_READ_FAILURE,
 189    IDS_ERRORPAGES_DETAILS_CACHE_READ_FAILURE,
 190    SUGGEST_RELOAD,
 191   },
 192   {net::ERR_NETWORK_IO_SUSPENDED,
 193    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 194    IDS_ERRORPAGES_HEADING_NETWORK_IO_SUSPENDED,
 195    IDS_ERRORPAGES_SUMMARY_NETWORK_IO_SUSPENDED,
 196    IDS_ERRORPAGES_DETAILS_NETWORK_IO_SUSPENDED,
 197    SUGGEST_RELOAD,
 198   },
 199   {net::ERR_TOO_MANY_REDIRECTS,
 200    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 201    IDS_ERRORPAGES_HEADING_TOO_MANY_REDIRECTS,
 202    IDS_ERRORPAGES_SUMMARY_TOO_MANY_REDIRECTS,
 203    IDS_ERRORPAGES_DETAILS_TOO_MANY_REDIRECTS,
 204    SUGGEST_RELOAD | SUGGEST_LEARNMORE,
 205   },
 206   {net::ERR_EMPTY_RESPONSE,
 207    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 208    IDS_ERRORPAGES_HEADING_EMPTY_RESPONSE,
 209    IDS_ERRORPAGES_SUMMARY_EMPTY_RESPONSE,
 210    IDS_ERRORPAGES_DETAILS_EMPTY_RESPONSE,
 211    SUGGEST_RELOAD,
 212   },
 213   {net::ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_LENGTH,
 214    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 215    IDS_ERRORPAGES_HEADING_DUPLICATE_HEADERS,
 216    IDS_ERRORPAGES_SUMMARY_DUPLICATE_HEADERS,
 217    IDS_ERRORPAGES_DETAILS_RESPONSE_HEADERS_MULTIPLE_CONTENT_LENGTH,
 218    SUGGEST_NONE,
 219   },
 220   {net::ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_DISPOSITION,
 221    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 222    IDS_ERRORPAGES_HEADING_DUPLICATE_HEADERS,
 223    IDS_ERRORPAGES_SUMMARY_DUPLICATE_HEADERS,
 224    IDS_ERRORPAGES_DETAILS_RESPONSE_HEADERS_MULTIPLE_CONTENT_DISPOSITION,
 225    SUGGEST_NONE,
 226   },
 227   {net::ERR_RESPONSE_HEADERS_MULTIPLE_LOCATION,
 228    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 229    IDS_ERRORPAGES_HEADING_DUPLICATE_HEADERS,
 230    IDS_ERRORPAGES_SUMMARY_DUPLICATE_HEADERS,
 231    IDS_ERRORPAGES_DETAILS_RESPONSE_HEADERS_MULTIPLE_LOCATION,
 232    SUGGEST_NONE,
 233   },
 234   {net::ERR_CONTENT_LENGTH_MISMATCH,
 235    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 236    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 237    IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
 238    IDS_ERRORPAGES_DETAILS_CONNECTION_CLOSED,
 239    SUGGEST_RELOAD,
 240   },
 241   {net::ERR_INCOMPLETE_CHUNKED_ENCODING,
 242    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 243    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 244    IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
 245    IDS_ERRORPAGES_DETAILS_CONNECTION_CLOSED,
 246    SUGGEST_RELOAD,
 247   },
 248   {net::ERR_SSL_PROTOCOL_ERROR,
 249    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 250    IDS_ERRORPAGES_HEADING_SSL_PROTOCOL_ERROR,
 251    IDS_ERRORPAGES_SUMMARY_SSL_PROTOCOL_ERROR,
 252    IDS_ERRORPAGES_DETAILS_SSL_PROTOCOL_ERROR,
 253    SUGGEST_NONE,
 254   },
 255   {net::ERR_BAD_SSL_CLIENT_AUTH_CERT,
 256    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 257    IDS_ERRORPAGES_HEADING_BAD_SSL_CLIENT_AUTH_CERT,
 258    IDS_ERRORPAGES_SUMMARY_BAD_SSL_CLIENT_AUTH_CERT,
 259    IDS_ERRORPAGES_DETAILS_BAD_SSL_CLIENT_AUTH_CERT,
 260    SUGGEST_NONE,
 261   },
 262   {net::ERR_SSL_WEAK_SERVER_EPHEMERAL_DH_KEY,
 263    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 264    IDS_ERRORPAGES_HEADING_WEAK_SERVER_EPHEMERAL_DH_KEY,
 265    IDS_ERRORPAGES_SUMMARY_WEAK_SERVER_EPHEMERAL_DH_KEY,
 266    IDS_ERRORPAGES_DETAILS_SSL_PROTOCOL_ERROR,
 267    SUGGEST_LEARNMORE,
 268   },
 269   {net::ERR_SSL_PINNED_KEY_NOT_IN_CERT_CHAIN,
 270    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 271    IDS_ERRORPAGES_HEADING_PINNING_FAILURE,
 272    IDS_ERRORPAGES_SUMMARY_PINNING_FAILURE,
 273    IDS_ERRORPAGES_DETAILS_PINNING_FAILURE,
 274    SUGGEST_NONE,
 275   },
 276   {net::ERR_TEMPORARILY_THROTTLED,
 277    IDS_ERRORPAGES_TITLE_ACCESS_DENIED,
 278    IDS_ERRORPAGES_HEADING_ACCESS_DENIED,
 279    IDS_ERRORPAGES_SUMMARY_TEMPORARILY_THROTTLED,
 280    IDS_ERRORPAGES_DETAILS_TEMPORARILY_THROTTLED,
 281    SUGGEST_NONE,
 282   },
 283   {net::ERR_BLOCKED_BY_CLIENT,
 284    IDS_ERRORPAGES_TITLE_BLOCKED,
 285    IDS_ERRORPAGES_HEADING_BLOCKED,
 286    IDS_ERRORPAGES_SUMMARY_BLOCKED,
 287    IDS_ERRORPAGES_DETAILS_BLOCKED,
 288    SUGGEST_RELOAD | SUGGEST_DISABLE_EXTENSION,
 289   },
 290   {net::ERR_NETWORK_CHANGED,
 291    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 292    IDS_ERRORPAGES_HEADING_NETWORK_ACCESS_DENIED,
 293    IDS_ERRORPAGES_SUMMARY_NETWORK_CHANGED,
 294    IDS_ERRORPAGES_DETAILS_NETWORK_CHANGED,
 295    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION,
 296   },
 297   {net::ERR_BLOCKED_BY_ADMINISTRATOR,
 298    IDS_ERRORPAGES_TITLE_BLOCKED,
 299    IDS_ERRORPAGES_HEADING_BLOCKED_BY_ADMINISTRATOR,
 300    IDS_ERRORPAGES_SUMMARY_BLOCKED_BY_ADMINISTRATOR,
 301    IDS_ERRORPAGES_DETAILS_BLOCKED_BY_ADMINISTRATOR,
 302    SUGGEST_VIEW_POLICIES | SUGGEST_CONTACT_ADMINISTRATOR,
 303   },
 304   {net::ERR_BLOCKED_ENROLLMENT_CHECK_PENDING,
 305    IDS_ERRORPAGES_TITLE_BLOCKED,
 306    IDS_ERRORPAGES_HEADING_BLOCKED_BY_ADMINISTRATOR,
 307    IDS_ERRORPAGES_SUMMARY_BLOCKED_ENROLLMENT_CHECK_PENDING,
 308    IDS_ERRORPAGES_DETAILS_BLOCKED_ENROLLMENT_CHECK_PENDING,
 309    SUGGEST_CHECK_CONNECTION,
 310   },
 311   {net::ERR_SSL_FALLBACK_BEYOND_MINIMUM_VERSION,
 312    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 313    IDS_ERRORPAGES_HEADING_SSL_FALLBACK_BEYOND_MINIMUM_VERSION,
 314    IDS_ERRORPAGES_SUMMARY_SSL_FALLBACK_BEYOND_MINIMUM_VERSION,
 315    IDS_ERRORPAGES_DETAILS_SSL_FALLBACK_BEYOND_MINIMUM_VERSION,
 316    SUGGEST_NONE,
 317   },
 318   {net::ERR_SSL_VERSION_OR_CIPHER_MISMATCH,
 319    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 320    IDS_ERRORPAGES_HEADING_SSL_VERSION_OR_CIPHER_MISMATCH,
 321    IDS_ERRORPAGES_SUMMARY_SSL_VERSION_OR_CIPHER_MISMATCH,
 322    IDS_ERRORPAGES_DETAILS_SSL_VERSION_OR_CIPHER_MISMATCH,
 323    SUGGEST_NONE,
 324   },
 325   {net::ERR_TEMPORARY_BACKOFF,
 326    IDS_ERRORPAGES_TITLE_ACCESS_DENIED,
 327    IDS_ERRORPAGES_HEADING_ACCESS_DENIED,
 328    IDS_ERRORPAGES_SUMMARY_TEMPORARY_BACKOFF,
 329    IDS_ERRORPAGES_DETAILS_TEMPORARY_BACKOFF,
 330    SUGGEST_NONE,
 331   },
 332   {net::ERR_SSL_SERVER_CERT_BAD_FORMAT,
 333    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 334    IDS_ERRORPAGES_HEADING_SSL_PROTOCOL_ERROR,
 335    IDS_ERRORPAGES_SUMMARY_SSL_PROTOCOL_ERROR,
 336    IDS_ERRORPAGES_DETAILS_SSL_PROTOCOL_ERROR,
 337    SUGGEST_NONE,
 338   },
 339 };
 340
 341 // Special error page to be used in the case of navigating back to a page
 342 // generated by a POST.  LocalizedError::HasStrings expects this net error code
 343 // to also appear in the array above.
 344 const LocalizedErrorMap repost_error = {
 345   net::ERR_CACHE_MISS,
 346   IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 347   IDS_HTTP_POST_WARNING_TITLE,
 348   IDS_ERRORPAGES_HTTP_POST_WARNING,
 349   IDS_ERRORPAGES_DETAILS_CACHE_MISS,
 350   SUGGEST_RELOAD,
 351 };
 352
 353 const LocalizedErrorMap http_error_options[] = {
 354   {403,
 355    IDS_ERRORPAGES_TITLE_ACCESS_DENIED,
 356    IDS_ERRORPAGES_HEADING_ACCESS_DENIED,
 357    IDS_ERRORPAGES_SUMMARY_FORBIDDEN,
 358    IDS_ERRORPAGES_DETAILS_FORBIDDEN,
 359    SUGGEST_NONE,
 360   },
 361   {410,
 362    IDS_ERRORPAGES_TITLE_NOT_FOUND,
 363    IDS_ERRORPAGES_HEADING_NOT_FOUND,
 364    IDS_ERRORPAGES_SUMMARY_GONE,
 365    IDS_ERRORPAGES_DETAILS_GONE,
 366    SUGGEST_NONE,
 367   },
 368
 369   {500,
 370    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 371    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 372    IDS_ERRORPAGES_SUMMARY_INTERNAL_SERVER_ERROR,
 373    IDS_ERRORPAGES_DETAILS_INTERNAL_SERVER_ERROR,
 374    SUGGEST_RELOAD,
 375   },
 376   {501,
 377    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 378    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 379    IDS_ERRORPAGES_SUMMARY_WEBSITE_CANNOT_HANDLE,
 380    IDS_ERRORPAGES_DETAILS_NOT_IMPLEMENTED,
 381    SUGGEST_NONE,
 382   },
 383   {502,
 384    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 385    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 386    IDS_ERRORPAGES_SUMMARY_BAD_GATEWAY,
 387    IDS_ERRORPAGES_DETAILS_BAD_GATEWAY,
 388    SUGGEST_RELOAD,
 389   },
 390   {503,
 391    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 392    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 393    IDS_ERRORPAGES_SUMMARY_SERVICE_UNAVAILABLE,
 394    IDS_ERRORPAGES_DETAILS_SERVICE_UNAVAILABLE,
 395    SUGGEST_RELOAD,
 396   },
 397   {504,
 398    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 399    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 400    IDS_ERRORPAGES_SUMMARY_GATEWAY_TIMEOUT,
 401    IDS_ERRORPAGES_DETAILS_GATEWAY_TIMEOUT,
 402    SUGGEST_RELOAD,
 403   },
 404   {505,
 405    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 406    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 407    IDS_ERRORPAGES_SUMMARY_WEBSITE_CANNOT_HANDLE,
 408    IDS_ERRORPAGES_DETAILS_HTTP_VERSION_NOT_SUPPORTED,
 409    SUGGEST_NONE,
 410   },
 411 };
 412
 413 const LocalizedErrorMap dns_probe_error_options[] = {
 414   {error_page::DNS_PROBE_POSSIBLE,
 415    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 416    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 417    IDS_ERRORPAGES_SUMMARY_DNS_PROBE_RUNNING,
 418    IDS_ERRORPAGES_DETAILS_DNS_PROBE_RUNNING,
 419    SUGGEST_RELOAD,
 420   },
 421
 422   // DNS_PROBE_NOT_RUN is not here; NetErrorHelper will restore the original
 423   // error, which might be one of several DNS-related errors.
 424
 425   {error_page::DNS_PROBE_STARTED,
 426    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 427    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 428    IDS_ERRORPAGES_SUMMARY_DNS_PROBE_RUNNING,
 429    IDS_ERRORPAGES_DETAILS_DNS_PROBE_RUNNING,
 430    // Include SUGGEST_RELOAD so the More button doesn't jump when we update.
 431    SUGGEST_RELOAD,
 432   },
 433
 434   // DNS_PROBE_FINISHED_UNKNOWN is not here; NetErrorHelper will restore the
 435   // original error, which might be one of several DNS-related errors.
 436
 437   {error_page::DNS_PROBE_FINISHED_NO_INTERNET,
 438    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 439    IDS_ERRORPAGES_HEADING_INTERNET_DISCONNECTED,
 440    IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED,
 441    IDS_ERRORPAGES_DETAILS_INTERNET_DISCONNECTED,
 442    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG,
 443   },
 444   {error_page::DNS_PROBE_FINISHED_BAD_CONFIG,
 445    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 446    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 447    IDS_ERRORPAGES_SUMMARY_NAME_NOT_RESOLVED,
 448    IDS_ERRORPAGES_DETAILS_NAME_NOT_RESOLVED,
 449    SUGGEST_RELOAD | SUGGEST_DNS_CONFIG | SUGGEST_FIREWALL_CONFIG,
 450   },
 451   {error_page::DNS_PROBE_FINISHED_NXDOMAIN,
 452    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 453    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 454    IDS_ERRORPAGES_SUMMARY_NAME_NOT_RESOLVED,
 455    IDS_ERRORPAGES_DETAILS_NAME_NOT_RESOLVED,
 456    SUGGEST_RELOAD,
 457   },
 458 };
 459
 460 const LocalizedErrorMap* FindErrorMapInArray(const LocalizedErrorMap* maps,
 461                                                    size_t num_maps,
 462                                                    int error_code) {
 463   for (size_t i = 0; i < num_maps; ++i) {
 464     if (maps[i].error_code == error_code)
 465       return &maps[i];
 466   }
 467   return NULL;
 468 }
 469
 470 const LocalizedErrorMap* LookupErrorMap(const std::string& error_domain,
 471                                         int error_code, bool is_post) {
 472   if (error_domain == net::kErrorDomain) {
 473     // Display a different page in the special case of navigating through the
 474     // history to an uncached page created by a POST.
 475     if (is_post && error_code == net::ERR_CACHE_MISS)
 476       return &repost_error;
 477     return FindErrorMapInArray(net_error_options,
 478                                arraysize(net_error_options),
 479                                error_code);
 480   } else if (error_domain == LocalizedError::kHttpErrorDomain) {
 481     return FindErrorMapInArray(http_error_options,
 482                                arraysize(http_error_options),
 483                                error_code);
 484   } else if (error_domain == error_page::kDnsProbeErrorDomain) {
 485     const LocalizedErrorMap* map =
 486         FindErrorMapInArray(dns_probe_error_options,
 487                             arraysize(dns_probe_error_options),
 488                             error_code);
 489     DCHECK(map);
 490     return map;
 491   } else {
 492     NOTREACHED();
 493     return NULL;
 494   }
 495 }
 496
 497 // Returns a dictionary containing the strings for the settings menu under the
 498 // wrench, and the advanced settings button.
 499 base::DictionaryValue* GetStandardMenuItemsText() {
 500   base::DictionaryValue* standard_menu_items_text = new base::DictionaryValue();
 501   standard_menu_items_text->SetString("settingsTitle",
 502       l10n_util::GetStringUTF16(IDS_SETTINGS_TITLE));
 503   standard_menu_items_text->SetString("advancedTitle",
 504       l10n_util::GetStringUTF16(IDS_SETTINGS_SHOW_ADVANCED_SETTINGS));
 505   return standard_menu_items_text;
 506 }
 507
 508 // Gets the icon class for a given |error_domain| and |error_code|.
 509 const char* GetIconClassForError(const std::string& error_domain,
 510                                  int error_code) {
 511   if ((error_code == net::ERR_INTERNET_DISCONNECTED &&
 512        error_domain == net::kErrorDomain) ||
 513       (error_code == error_page::DNS_PROBE_FINISHED_NO_INTERNET &&
 514        error_domain == error_page::kDnsProbeErrorDomain))
 515     return "icon-offline";
 516
 517   return "icon-generic";
 518 }
 519
 520 }  // namespace
 521
 522 const char LocalizedError::kHttpErrorDomain[] = "http";
 523
 524 void LocalizedError::GetStrings(int error_code,
 525                                 const std::string& error_domain,
 526                                 const GURL& failed_url,
 527                                 bool is_post,
 528                                 bool stale_copy_in_cache,
 529                                 bool can_show_network_diagnostics_dialog,
 530                                 const std::string& locale,
 531                                 const std::string& accept_languages,
 532                                 scoped_ptr<error_page::ErrorPageParams> params,
 533                                 base::DictionaryValue* error_strings) {
 534   webui::SetLoadTimeDataDefaults(locale, error_strings);
 535
 536   // Grab the strings and settings that depend on the error type.  Init
 537   // options with default values.
 538   LocalizedErrorMap options = {
 539     0,
 540     IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 541     IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 542     IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
 543     kErrorPagesNoDetails,
 544     SUGGEST_NONE,
 545   };
 546
 547   const LocalizedErrorMap* error_map = LookupErrorMap(error_domain, error_code,
 548                                                       is_post);
 549   if (error_map)
 550     options = *error_map;
 551
 552   // If we got "access denied" but the url was a file URL, then we say it was a
 553   // file instead of just using the "not available" default message. Just adding
 554   // ERR_ACCESS_DENIED to the map isn't sufficient, since that message may be
 555   // generated by some OSs when the operation doesn't involve a file URL.
 556   if (error_domain == net::kErrorDomain &&
 557       error_code == net::ERR_ACCESS_DENIED &&
 558       failed_url.scheme() == "file") {
 559     options.title_resource_id = IDS_ERRORPAGES_TITLE_ACCESS_DENIED;
 560     options.heading_resource_id = IDS_ERRORPAGES_HEADING_FILE_ACCESS_DENIED;
 561     options.summary_resource_id = IDS_ERRORPAGES_SUMMARY_FILE_ACCESS_DENIED;
 562     options.details_resource_id = IDS_ERRORPAGES_DETAILS_FILE_ACCESS_DENIED;
 563     options.suggestions = SUGGEST_NONE;
 564   }
 565
 566   base::string16 failed_url_string(url_formatter::FormatUrl(
 567       failed_url, accept_languages, url_formatter::kFormatUrlOmitNothing,
 568       net::UnescapeRule::NORMAL, nullptr, nullptr, nullptr));
 569   // URLs are always LTR.
 570   if (base::i18n::IsRTL())
 571     base::i18n::WrapStringWithLTRFormatting(&failed_url_string);
 572   error_strings->SetString("title",
 573       l10n_util::GetStringFUTF16(options.title_resource_id, failed_url_string));
 574   error_strings->SetString("heading",
 575       l10n_util::GetStringUTF16(options.heading_resource_id));
 576
 577   std::string icon_class = GetIconClassForError(error_domain, error_code);
 578   error_strings->SetString("iconClass", icon_class);
 579
 580   base::DictionaryValue* summary = new base::DictionaryValue;
 581
 582   // For offline show a summary message underneath the heading.
 583   if (error_code == net::ERR_INTERNET_DISCONNECTED ||
 584       error_code == error_page::DNS_PROBE_FINISHED_NO_INTERNET) {
 585     error_strings->SetString("primaryParagraph",
 586         l10n_util::GetStringUTF16(options.summary_resource_id));
 587
 588 #if defined(OS_CHROMEOS)
 589     base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 590
 591     // Check if easter egg should be disabled.
 592     if (command_line->HasSwitch(switches::kDisableDinosaurEasterEgg)) {
 593       // The prescence of this string disables the easter egg. Acts as a flag.
 594       error_strings->SetString("disabledEasterEgg",
 595           l10n_util::GetStringUTF16(IDS_ERRORPAGE_FUN_DISABLED));
 596     }
 597 #endif
 598
 599   } else {
 600     // Set summary message in the details.
 601     summary->SetString("msg",
 602         l10n_util::GetStringUTF16(options.summary_resource_id));
 603   }
 604   summary->SetString("failedUrl", failed_url_string);
 605   summary->SetString("hostName", url_formatter::IDNToUnicode(failed_url.host(),
 606                                                              accept_languages));
 607   summary->SetString("productName",
 608                      l10n_util::GetStringUTF16(IDS_PRODUCT_NAME));
 609
 610   error_strings->SetString(
 611       "details", l10n_util::GetStringUTF16(IDS_ERRORPAGE_NET_BUTTON_DETAILS));
 612   error_strings->SetString(
 613       "hideDetails", l10n_util::GetStringUTF16(
 614           IDS_ERRORPAGE_NET_BUTTON_HIDE_DETAILS));
 615   error_strings->Set("summary", summary);
 616
 617   if (options.details_resource_id != kErrorPagesNoDetails) {
 618     error_strings->SetString(
 619         "errorDetails", l10n_util::GetStringUTF16(options.details_resource_id));
 620   }
 621
 622   base::string16 error_string;
 623   if (error_domain == net::kErrorDomain) {
 624     // Non-internationalized error string, for debugging Chrome itself.
 625     error_string = base::ASCIIToUTF16(net::ErrorToShortString(error_code));
 626   } else if (error_domain == error_page::kDnsProbeErrorDomain) {
 627     std::string ascii_error_string =
 628         error_page::DnsProbeStatusToString(error_code);
 629     error_string = base::ASCIIToUTF16(ascii_error_string);
 630   } else {
 631     DCHECK_EQ(LocalizedError::kHttpErrorDomain, error_domain);
 632     error_string = base::IntToString16(error_code);
 633   }
 634   error_strings->SetString("errorCode",
 635       l10n_util::GetStringFUTF16(IDS_ERRORPAGES_ERROR_CODE, error_string));
 636
 637   // Platform specific information for diagnosing network issues on OSX and
 638   // Windows.
 639 #if defined(OS_MACOSX) || defined(OS_WIN)
 640   if (error_domain == net::kErrorDomain &&
 641       error_code == net::ERR_INTERNET_DISCONNECTED) {
 642     int platform_string_id =
 643         IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_PLATFORM;
 644 #if defined(OS_WIN)
 645     // Different versions of Windows have different instructions.
 646     base::win::Version windows_version = base::win::GetVersion();
 647     if (windows_version < base::win::VERSION_VISTA) {
 648       // XP, XP64, and Server 2003.
 649       platform_string_id =
 650           IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_PLATFORM_XP;
 651     } else if (windows_version == base::win::VERSION_VISTA) {
 652       // Vista
 653       platform_string_id =
 654           IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_PLATFORM_VISTA;
 655     }
 656 #endif  // defined(OS_WIN)
 657     // Platform dependent portion of the summary section.
 658     summary->SetString("msg",
 659         l10n_util::GetStringFUTF16(
 660             IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_INSTRUCTIONS_TEMPLATE,
 661             l10n_util::GetStringUTF16(platform_string_id)));
 662   }
 663 #endif  // defined(OS_MACOSX) || defined(OS_WIN)
 664
 665   // If no parameters were provided, use the defaults.
 666   if (!params) {
 667     params.reset(new error_page::ErrorPageParams());
 668     params->suggest_reload = !!(options.suggestions & SUGGEST_RELOAD);
 669   }
 670
 671   base::ListValue* suggestions = NULL;
 672   bool use_default_suggestions = true;
 673   if (!params->override_suggestions) {
 674     suggestions = new base::ListValue();
 675   } else {
 676     suggestions = params->override_suggestions.release();
 677     use_default_suggestions = false;
 678     EnableGoogleCachedCopyButtonExperiment(suggestions, error_strings);
 679   }
 680
 681   error_strings->Set("suggestions", suggestions);
 682
 683   if (params->search_url.is_valid()) {
 684     error_strings->SetString("searchHeader",
 685         l10n_util::GetStringUTF16(IDS_ERRORPAGES_SUGGESTION_GOOGLE_SEARCH));
 686     error_strings->SetString("searchUrl", params->search_url.spec());
 687     error_strings->SetString("searchTerms", params->search_terms);
 688     error_strings->SetInteger("searchTrackingId", params->search_tracking_id);
 689   }
 690
 691   // Add the reload suggestion, if needed.
 692   if (params->suggest_reload) {
 693     if (!is_post) {
 694       base::DictionaryValue* reload_button = new base::DictionaryValue;
 695       reload_button->SetString(
 696           "msg", l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_RELOAD));
 697       reload_button->SetString("reloadUrl", failed_url.spec());
 698       error_strings->Set("reloadButton", reload_button);
 699       reload_button->SetInteger("reloadTrackingId", params->reload_tracking_id);
 700     } else {
 701       // If the page was created by a post, it can't be reloaded in the same
 702       // way, so just add a suggestion instead.
 703       // TODO(mmenke):  Make the reload button bring up the repost confirmation
 704       //                dialog for pages resulting from posts.
 705       base::DictionaryValue* suggest_reload_repost = new base::DictionaryValue;
 706       suggest_reload_repost->SetString("header",
 707           l10n_util::GetStringUTF16(
 708               IDS_ERRORPAGES_SUGGESTION_RELOAD_REPOST_HEADER));
 709       suggest_reload_repost->SetString("body",
 710           l10n_util::GetStringUTF16(
 711               IDS_ERRORPAGES_SUGGESTION_RELOAD_REPOST_BODY));
 712       // Add at the front, so it appears before other suggestions, in the case
 713       // suggestions are being overridden by |params|.
 714       suggestions->Insert(0, suggest_reload_repost);
 715     }
 716   }
 717
 718   // If not using the default suggestions, nothing else to do.
 719   if (!use_default_suggestions)
 720     return;
 721
 722   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 723   const std::string& show_saved_copy_value =
 724       command_line->GetSwitchValueASCII(switches::kShowSavedCopy);
 725   bool show_saved_copy_primary = (show_saved_copy_value ==
 726       switches::kEnableShowSavedCopyPrimary);
 727   bool show_saved_copy_secondary = (show_saved_copy_value ==
 728       switches::kEnableShowSavedCopySecondary);
 729   bool show_saved_copy_visible =
 730       (stale_copy_in_cache && !is_post &&
 731       (show_saved_copy_primary || show_saved_copy_secondary));
 732
 733   if (show_saved_copy_visible) {
 734     base::DictionaryValue* show_saved_copy_button = new base::DictionaryValue;
 735     show_saved_copy_button->SetString(
 736         "msg", l10n_util::GetStringUTF16(
 737             IDS_ERRORPAGES_BUTTON_SHOW_SAVED_COPY));
 738     show_saved_copy_button->SetString(
 739         "title",
 740         l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_SHOW_SAVED_COPY_HELP));
 741     if (show_saved_copy_primary)
 742       show_saved_copy_button->SetString("primary", "true");
 743     error_strings->Set("showSavedCopyButton", show_saved_copy_button);
 744   }
 745
 746 #if defined(OS_CHROMEOS)
 747   // ChromeOS has its own diagnostics extension, which doesn't rely on a
 748   // browser-initiated dialog.
 749   can_show_network_diagnostics_dialog = true;
 750 #endif
 751   if (can_show_network_diagnostics_dialog && failed_url.is_valid() &&
 752       failed_url.SchemeIsHTTPOrHTTPS()) {
 753     error_strings->SetString(
 754         "diagnose", l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_DIAGNOSE));
 755   }
 756
 757   if (options.suggestions & SUGGEST_CHECK_CONNECTION) {
 758     base::DictionaryValue* suggest_check_connection = new base::DictionaryValue;
 759     suggest_check_connection->SetString("header",
 760         l10n_util::GetStringUTF16(
 761             IDS_ERRORPAGES_SUGGESTION_CHECK_CONNECTION_HEADER));
 762     suggest_check_connection->SetString("body",
 763         l10n_util::GetStringUTF16(
 764             IDS_ERRORPAGES_SUGGESTION_CHECK_CONNECTION_BODY));
 765     suggestions->Append(suggest_check_connection);
 766   }
 767
 768   if (options.suggestions & SUGGEST_DNS_CONFIG) {
 769     base::DictionaryValue* suggest_dns_config = new base::DictionaryValue;
 770     suggest_dns_config->SetString("header",
 771         l10n_util::GetStringUTF16(
 772             IDS_ERRORPAGES_SUGGESTION_DNS_CONFIG_HEADER));
 773     suggest_dns_config->SetString("body",
 774         l10n_util::GetStringUTF16(
 775             IDS_ERRORPAGES_SUGGESTION_DNS_CONFIG_BODY));
 776     suggestions->Append(suggest_dns_config);
 777
 778     base::DictionaryValue* suggest_network_prediction =
 779         GetStandardMenuItemsText();
 780     suggest_network_prediction->SetString("header",
 781         l10n_util::GetStringUTF16(
 782             IDS_ERRORPAGES_SUGGESTION_NETWORK_PREDICTION_HEADER));
 783     suggest_network_prediction->SetString("body",
 784         l10n_util::GetStringUTF16(
 785             IDS_ERRORPAGES_SUGGESTION_NETWORK_PREDICTION_BODY));
 786     suggest_network_prediction->SetString(
 787         "noNetworkPredictionTitle",
 788         l10n_util::GetStringUTF16(
 789             IDS_NETWORK_PREDICTION_ENABLED_DESCRIPTION));
 790     suggestions->Append(suggest_network_prediction);
 791   }
 792
 793   if (options.suggestions & SUGGEST_FIREWALL_CONFIG) {
 794     base::DictionaryValue* suggest_firewall_config = new base::DictionaryValue;
 795     suggest_firewall_config->SetString("header",
 796         l10n_util::GetStringUTF16(
 797             IDS_ERRORPAGES_SUGGESTION_FIREWALL_CONFIG_HEADER));
 798     suggest_firewall_config->SetString("body",
 799         l10n_util::GetStringUTF16(
 800             IDS_ERRORPAGES_SUGGESTION_FIREWALL_CONFIG_BODY));
 801     suggestions->Append(suggest_firewall_config);
 802   }
 803
 804   if (options.suggestions & SUGGEST_PROXY_CONFIG) {
 805     base::DictionaryValue* suggest_proxy_config = GetStandardMenuItemsText();
 806     suggest_proxy_config->SetString("header",
 807         l10n_util::GetStringUTF16(
 808             IDS_ERRORPAGES_SUGGESTION_PROXY_CONFIG_HEADER));
 809     suggest_proxy_config->SetString("body",
 810         l10n_util::GetStringFUTF16(IDS_ERRORPAGES_SUGGESTION_PROXY_CONFIG_BODY,
 811             l10n_util::GetStringUTF16(
 812                 IDS_ERRORPAGES_SUGGESTION_PROXY_DISABLE_PLATFORM)));
 813     suggest_proxy_config->SetString("proxyTitle",
 814         l10n_util::GetStringUTF16(IDS_OPTIONS_PROXIES_CONFIGURE_BUTTON));
 815
 816     suggestions->Append(suggest_proxy_config);
 817   }
 818
 819   if (options.suggestions & SUGGEST_DISABLE_EXTENSION) {
 820     base::DictionaryValue* suggest_disable_extension =
 821         new base::DictionaryValue;
 822     // There's only a header for this suggestion.
 823     suggest_disable_extension->SetString("header",
 824         l10n_util::GetStringUTF16(
 825             IDS_ERRORPAGES_SUGGESTION_DISABLE_EXTENSION_HEADER));
 826     suggestions->Append(suggest_disable_extension);
 827   }
 828
 829   if (options.suggestions & SUGGEST_VIEW_POLICIES) {
 830     base::DictionaryValue* suggest_view_policies = new base::DictionaryValue;
 831     suggest_view_policies->SetString(
 832         "header",
 833         l10n_util::GetStringUTF16(
 834             IDS_ERRORPAGES_SUGGESTION_VIEW_POLICIES_HEADER));
 835     suggest_view_policies->SetString(
 836         "body",
 837         l10n_util::GetStringUTF16(
 838             IDS_ERRORPAGES_SUGGESTION_VIEW_POLICIES_BODY));
 839     suggestions->Append(suggest_view_policies);
 840   }
 841
 842   if (options.suggestions & SUGGEST_CONTACT_ADMINISTRATOR) {
 843     base::DictionaryValue* suggest_contant_administrator =
 844         new base::DictionaryValue;
 845     suggest_contant_administrator->SetString(
 846         "body",
 847         l10n_util::GetStringUTF16(
 848             IDS_ERRORPAGES_SUGGESTION_CONTACT_ADMINISTRATOR_BODY));
 849     suggestions->Append(suggest_contant_administrator);
 850   }
 851
 852   if (options.suggestions & SUGGEST_LEARNMORE) {
 853     GURL learn_more_url;
 854     switch (options.error_code) {
 855       case net::ERR_TOO_MANY_REDIRECTS:
 856         learn_more_url = GURL(kRedirectLoopLearnMoreUrl);
 857         break;
 858       case net::ERR_SSL_WEAK_SERVER_EPHEMERAL_DH_KEY:
 859         learn_more_url = GURL(kWeakDHKeyLearnMoreUrl);
 860         break;
 861       default:
 862         break;
 863     }
 864
 865     if (learn_more_url.is_valid()) {
 866       // Add the language parameter to the URL.
 867       std::string query = learn_more_url.query() + "&hl=" + locale;
 868       GURL::Replacements repl;
 869       repl.SetQueryStr(query);
 870       learn_more_url = learn_more_url.ReplaceComponents(repl);
 871
 872       base::DictionaryValue* suggest_learn_more = new base::DictionaryValue;
 873       // There's only a body for this suggestion.
 874       suggest_learn_more->SetString("body",
 875           l10n_util::GetStringUTF16(IDS_ERRORPAGES_SUGGESTION_LEARNMORE_BODY));
 876       suggest_learn_more->SetString("learnMoreUrl", learn_more_url.spec());
 877       suggestions->Append(suggest_learn_more);
 878     }
 879   }
 880 }
 881
 882 base::string16 LocalizedError::GetErrorDetails(const blink::WebURLError& error,
 883                                                bool is_post) {
 884   const LocalizedErrorMap* error_map =
 885       LookupErrorMap(error.domain.utf8(), error.reason, is_post);
 886   if (error_map)
 887     return l10n_util::GetStringUTF16(error_map->details_resource_id);
 888   else
 889     return l10n_util::GetStringUTF16(IDS_ERRORPAGES_DETAILS_UNKNOWN);
 890 }
 891
 892 bool LocalizedError::HasStrings(const std::string& error_domain,
 893                                 int error_code) {
 894   // Whether or not the there are strings for an error does not depend on
 895   // whether or not the page was be generated by a POST, so just claim it was
 896   // not.
 897   return LookupErrorMap(error_domain, error_code, /*is_post=*/false) != NULL;
 898 }
 899
 900 void LocalizedError::EnableGoogleCachedCopyButtonExperiment(
 901     base::ListValue* suggestions,
 902     base::DictionaryValue* error_strings) {
 903   std::string field_trial_exp_type_ =
 904       base::FieldTrialList::FindFullName(kCachedCopyButtonFieldTrial);
 905
 906   // Google cache copy button experiment.
 907   // If the first suggestion is for a Google cache copy. Promote the
 908   // suggestion to a separate set of strings for displaying as a button.
 909   if (!suggestions->empty() && !field_trial_exp_type_.empty() &&
 910       field_trial_exp_type_ != kCachedCopyButtonExpTypeControl) {
 911     base::DictionaryValue* suggestion;
 912     suggestions->GetDictionary(0, &suggestion);
 913     int type = -1;
 914     suggestion->GetInteger("type", &type);
 915
 916     if (type == kGoogleCachedCopySuggestionType) {
 917       base::string16 cache_url;
 918       suggestion->GetString("urlCorrection", &cache_url);
 919       int cache_tracking_id = -1;
 920       suggestion->GetInteger("trackingId", &cache_tracking_id);
 921       scoped_ptr<base::DictionaryValue> cache_button(new base::DictionaryValue);
 922       cache_button->SetString(
 923             "msg",
 924             l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_SHOW_SAVED_COPY));
 925       cache_button->SetString("cacheUrl", cache_url);
 926       cache_button->SetInteger("trackingId", cache_tracking_id);
 927       error_strings->Set("cacheButton", cache_button.release());
 928
 929       // Remove the item from suggestions dictionary so that it does not get
 930       // displayed by the template in the details section.
 931       suggestions->Remove(0, nullptr);
 932     }
 933   }
 934 }