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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/common/localized_error.h"
      6 
      7 #include "base/i18n/rtl.h"
      8 #include "base/logging.h"
      9 #include "base/strings/string16.h"
     10 #include "base/strings/string_number_conversions.h"
     11 #include "base/strings/string_util.h"
     12 #include "base/strings/utf_string_conversions.h"
     13 #include "base/values.h"
     14 #include "chrome/common/net/net_error_info.h"
     15 #include "extensions/common/constants.h"
     16 #include "extensions/common/extension_icon_set.h"
     17 #include "extensions/common/manifest_handlers/icons_handler.h"
     18 #include "grit/chromium_strings.h"
     19 #include "grit/generated_resources.h"
     20 #include "net/base/escape.h"
     21 #include "net/base/net_errors.h"
     22 #include "net/base/net_util.h"
     23 #include "third_party/WebKit/public/platform/WebURLError.h"
     24 #include "ui/base/l10n/l10n_util.h"
     25 #include "ui/base/webui/web_ui_util.h"
     26 
     27 #if defined(OS_WIN)
     28 #include "base/win/windows_version.h"
     29 #endif
     30 
     31 using blink::WebURLError;
     32 
     33 // Some error pages have no details.
     34 const unsigned int kErrorPagesNoDetails = 0;
     35 
     36 namespace {
     37 
     38 static const char kRedirectLoopLearnMoreUrl[] =
     39     "https://www.google.com/support/chrome/bin/answer.py?answer=95626";
     40 static const char kWeakDHKeyLearnMoreUrl[] =
     41     "http://sites.google.com/a/chromium.org/dev/"
     42     "err_ssl_weak_server_ephemeral_dh_key";
     43 #if defined(OS_CHROMEOS)
     44 static const char kAppWarningLearnMoreUrl[] =
     45     "chrome-extension://honijodknafkokifofgiaalefdiedpko/main.html"
     46     "?answer=1721911";
     47 #endif  // defined(OS_CHROMEOS)
     48 
     49 enum NAV_SUGGESTIONS {
     50   SUGGEST_NONE                  = 0,
     51   SUGGEST_RELOAD                = 1 << 0,
     52   SUGGEST_CHECK_CONNECTION      = 1 << 1,
     53   SUGGEST_DNS_CONFIG            = 1 << 2,
     54   SUGGEST_FIREWALL_CONFIG       = 1 << 3,
     55   SUGGEST_PROXY_CONFIG          = 1 << 4,
     56   SUGGEST_DISABLE_EXTENSION     = 1 << 5,
     57   SUGGEST_LEARNMORE             = 1 << 6,
     58   SUGGEST_VIEW_POLICIES         = 1 << 7,
     59   SUGGEST_CONTACT_ADMINISTRATOR = 1 << 8,
     60 };
     61 
     62 struct LocalizedErrorMap {
     63   int error_code;
     64   unsigned int title_resource_id;
     65   unsigned int heading_resource_id;
     66   // Detailed summary used when the error is in the main frame.
     67   unsigned int summary_resource_id;
     68   // Short one sentence description shown on mouse over when the error is in
     69   // a frame.
     70   unsigned int details_resource_id;
     71   int suggestions;  // Bitmap of SUGGEST_* values.
     72 };
     73 
     74 const LocalizedErrorMap net_error_options[] = {
     75   {net::ERR_TIMED_OUT,
     76    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
     77    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
     78    IDS_ERRORPAGES_SUMMARY_TIMED_OUT,
     79    IDS_ERRORPAGES_DETAILS_TIMED_OUT,
     80    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG |
     81        SUGGEST_PROXY_CONFIG,
     82   },
     83   {net::ERR_CONNECTION_TIMED_OUT,
     84    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
     85    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
     86    IDS_ERRORPAGES_SUMMARY_TIMED_OUT,
     87    IDS_ERRORPAGES_DETAILS_TIMED_OUT,
     88    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG |
     89        SUGGEST_PROXY_CONFIG,
     90   },
     91   {net::ERR_CONNECTION_CLOSED,
     92    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
     93    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
     94    IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
     95    IDS_ERRORPAGES_DETAILS_CONNECTION_CLOSED,
     96    SUGGEST_RELOAD,
     97   },
     98   {net::ERR_CONNECTION_RESET,
     99    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
    100    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
    101    IDS_ERRORPAGES_SUMMARY_CONNECTION_RESET,
    102    IDS_ERRORPAGES_DETAILS_CONNECTION_RESET,
    103    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG |
    104        SUGGEST_PROXY_CONFIG,
    105   },
    106   {net::ERR_CONNECTION_REFUSED,
    107    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
    108    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
    109    IDS_ERRORPAGES_SUMMARY_CONNECTION_REFUSED,
    110    IDS_ERRORPAGES_DETAILS_CONNECTION_REFUSED,
    111    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG |
    112        SUGGEST_PROXY_CONFIG,
    113   },
    114   {net::ERR_CONNECTION_FAILED,
    115    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
    116    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
    117    IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
    118    IDS_ERRORPAGES_DETAILS_CONNECTION_FAILED,
    119    SUGGEST_RELOAD,
    120   },
    121   {net::ERR_NAME_NOT_RESOLVED,
    122    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
    123    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
    124    IDS_ERRORPAGES_SUMMARY_NAME_NOT_RESOLVED,
    125    IDS_ERRORPAGES_DETAILS_NAME_NOT_RESOLVED,
    126    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_DNS_CONFIG |
    127        SUGGEST_FIREWALL_CONFIG | SUGGEST_PROXY_CONFIG,
    128   },
    129   {net::ERR_ADDRESS_UNREACHABLE,
    130    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
    131    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
    132    IDS_ERRORPAGES_SUMMARY_ADDRESS_UNREACHABLE,
    133    IDS_ERRORPAGES_DETAILS_ADDRESS_UNREACHABLE,
    134    SUGGEST_RELOAD | SUGGEST_FIREWALL_CONFIG | SUGGEST_PROXY_CONFIG,
    135   },
    136   {net::ERR_NETWORK_ACCESS_DENIED,
    137    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
    138    IDS_ERRORPAGES_HEADING_NETWORK_ACCESS_DENIED,
    139    IDS_ERRORPAGES_SUMMARY_NETWORK_ACCESS_DENIED,
    140    IDS_ERRORPAGES_DETAILS_NETWORK_ACCESS_DENIED,
    141    SUGGEST_FIREWALL_CONFIG,
    142   },
    143   {net::ERR_PROXY_CONNECTION_FAILED,
    144    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
    145    IDS_ERRORPAGES_HEADING_PROXY_CONNECTION_FAILED,
    146    IDS_ERRORPAGES_SUMMARY_PROXY_CONNECTION_FAILED,
    147    IDS_ERRORPAGES_DETAILS_PROXY_CONNECTION_FAILED,
    148    SUGGEST_PROXY_CONFIG,
    149   },
    150   {net::ERR_INTERNET_DISCONNECTED,
    151    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
    152    IDS_ERRORPAGES_HEADING_INTERNET_DISCONNECTED,
    153    IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED,
    154    IDS_ERRORPAGES_DETAILS_INTERNET_DISCONNECTED,
    155    SUGGEST_NONE,
    156   },
    157   {net::ERR_FILE_NOT_FOUND,
    158    IDS_ERRORPAGES_TITLE_NOT_FOUND,
    159    IDS_ERRORPAGES_HEADING_NOT_FOUND,
    160    IDS_ERRORPAGES_SUMMARY_NOT_FOUND,
    161    IDS_ERRORPAGES_DETAILS_FILE_NOT_FOUND,
    162    SUGGEST_NONE,
    163   },
    164   {net::ERR_CACHE_MISS,
    165    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    166    IDS_ERRORPAGES_HEADING_CACHE_MISS,
    167    IDS_ERRORPAGES_SUMMARY_CACHE_MISS,
    168    IDS_ERRORPAGES_DETAILS_CACHE_MISS,
    169    SUGGEST_RELOAD,
    170   },
    171   {net::ERR_CACHE_READ_FAILURE,
    172    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    173    IDS_ERRORPAGES_HEADING_CACHE_READ_FAILURE,
    174    IDS_ERRORPAGES_SUMMARY_CACHE_READ_FAILURE,
    175    IDS_ERRORPAGES_DETAILS_CACHE_READ_FAILURE,
    176    SUGGEST_RELOAD,
    177   },
    178   {net::ERR_NETWORK_IO_SUSPENDED,
    179    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    180    IDS_ERRORPAGES_HEADING_NETWORK_IO_SUSPENDED,
    181    IDS_ERRORPAGES_SUMMARY_NETWORK_IO_SUSPENDED,
    182    IDS_ERRORPAGES_DETAILS_NETWORK_IO_SUSPENDED,
    183    SUGGEST_RELOAD,
    184   },
    185   {net::ERR_TOO_MANY_REDIRECTS,
    186    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    187    IDS_ERRORPAGES_HEADING_TOO_MANY_REDIRECTS,
    188    IDS_ERRORPAGES_SUMMARY_TOO_MANY_REDIRECTS,
    189    IDS_ERRORPAGES_DETAILS_TOO_MANY_REDIRECTS,
    190    SUGGEST_RELOAD | SUGGEST_LEARNMORE,
    191   },
    192   {net::ERR_EMPTY_RESPONSE,
    193    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    194    IDS_ERRORPAGES_HEADING_EMPTY_RESPONSE,
    195    IDS_ERRORPAGES_SUMMARY_EMPTY_RESPONSE,
    196    IDS_ERRORPAGES_DETAILS_EMPTY_RESPONSE,
    197    SUGGEST_RELOAD,
    198   },
    199   {net::ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_LENGTH,
    200    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    201    IDS_ERRORPAGES_HEADING_DUPLICATE_HEADERS,
    202    IDS_ERRORPAGES_SUMMARY_DUPLICATE_HEADERS,
    203    IDS_ERRORPAGES_DETAILS_RESPONSE_HEADERS_MULTIPLE_CONTENT_LENGTH,
    204    SUGGEST_NONE,
    205   },
    206   {net::ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_DISPOSITION,
    207    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    208    IDS_ERRORPAGES_HEADING_DUPLICATE_HEADERS,
    209    IDS_ERRORPAGES_SUMMARY_DUPLICATE_HEADERS,
    210    IDS_ERRORPAGES_DETAILS_RESPONSE_HEADERS_MULTIPLE_CONTENT_DISPOSITION,
    211    SUGGEST_NONE,
    212   },
    213   {net::ERR_RESPONSE_HEADERS_MULTIPLE_LOCATION,
    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_LOCATION,
    218    SUGGEST_NONE,
    219   },
    220   {net::ERR_CONTENT_LENGTH_MISMATCH,
    221    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
    222    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
    223    IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
    224    IDS_ERRORPAGES_DETAILS_CONNECTION_CLOSED,
    225    SUGGEST_RELOAD,
    226   },
    227   {net::ERR_INCOMPLETE_CHUNKED_ENCODING,
    228    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
    229    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
    230    IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
    231    IDS_ERRORPAGES_DETAILS_CONNECTION_CLOSED,
    232    SUGGEST_RELOAD,
    233   },
    234   {net::ERR_SSL_PROTOCOL_ERROR,
    235    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    236    IDS_ERRORPAGES_HEADING_SSL_PROTOCOL_ERROR,
    237    IDS_ERRORPAGES_SUMMARY_SSL_PROTOCOL_ERROR,
    238    IDS_ERRORPAGES_DETAILS_SSL_PROTOCOL_ERROR,
    239    SUGGEST_NONE,
    240   },
    241   {net::ERR_SSL_UNSAFE_NEGOTIATION,
    242    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    243    IDS_ERRORPAGES_HEADING_SSL_PROTOCOL_ERROR,
    244    IDS_ERRORPAGES_SUMMARY_SSL_PROTOCOL_ERROR,
    245    IDS_ERRORPAGES_DETAILS_SSL_UNSAFE_NEGOTIATION,
    246    SUGGEST_NONE,
    247   },
    248   {net::ERR_BAD_SSL_CLIENT_AUTH_CERT,
    249    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    250    IDS_ERRORPAGES_HEADING_BAD_SSL_CLIENT_AUTH_CERT,
    251    IDS_ERRORPAGES_SUMMARY_BAD_SSL_CLIENT_AUTH_CERT,
    252    IDS_ERRORPAGES_DETAILS_BAD_SSL_CLIENT_AUTH_CERT,
    253    SUGGEST_NONE,
    254   },
    255   {net::ERR_SSL_WEAK_SERVER_EPHEMERAL_DH_KEY,
    256    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    257    IDS_ERRORPAGES_HEADING_WEAK_SERVER_EPHEMERAL_DH_KEY,
    258    IDS_ERRORPAGES_SUMMARY_WEAK_SERVER_EPHEMERAL_DH_KEY,
    259    IDS_ERRORPAGES_DETAILS_SSL_PROTOCOL_ERROR,
    260    SUGGEST_LEARNMORE,
    261   },
    262   {net::ERR_SSL_PINNED_KEY_NOT_IN_CERT_CHAIN,
    263    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    264    IDS_ERRORPAGES_HEADING_PINNING_FAILURE,
    265    IDS_ERRORPAGES_SUMMARY_PINNING_FAILURE,
    266    IDS_ERRORPAGES_DETAILS_PINNING_FAILURE,
    267    SUGGEST_NONE,
    268   },
    269   {net::ERR_TEMPORARILY_THROTTLED,
    270    IDS_ERRORPAGES_TITLE_ACCESS_DENIED,
    271    IDS_ERRORPAGES_HEADING_ACCESS_DENIED,
    272    IDS_ERRORPAGES_SUMMARY_TEMPORARILY_THROTTLED,
    273    IDS_ERRORPAGES_DETAILS_TEMPORARILY_THROTTLED,
    274    SUGGEST_NONE,
    275   },
    276   {net::ERR_BLOCKED_BY_CLIENT,
    277    IDS_ERRORPAGES_TITLE_BLOCKED,
    278    IDS_ERRORPAGES_HEADING_BLOCKED,
    279    IDS_ERRORPAGES_SUMMARY_BLOCKED,
    280    IDS_ERRORPAGES_DETAILS_BLOCKED,
    281    SUGGEST_RELOAD | SUGGEST_DISABLE_EXTENSION,
    282   },
    283   {net::ERR_NETWORK_CHANGED,
    284    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    285    IDS_ERRORPAGES_HEADING_NETWORK_ACCESS_DENIED,
    286    IDS_ERRORPAGES_SUMMARY_NETWORK_CHANGED,
    287    IDS_ERRORPAGES_DETAILS_NETWORK_CHANGED,
    288    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION,
    289   },
    290   {net::ERR_BLOCKED_BY_ADMINISTRATOR,
    291    IDS_ERRORPAGES_TITLE_BLOCKED,
    292    IDS_ERRORPAGES_HEADING_BLOCKED_BY_ADMINISTRATOR,
    293    IDS_ERRORPAGES_SUMMARY_BLOCKED_BY_ADMINISTRATOR,
    294    IDS_ERRORPAGES_DETAILS_BLOCKED_BY_ADMINISTRATOR,
    295    SUGGEST_VIEW_POLICIES | SUGGEST_CONTACT_ADMINISTRATOR,
    296   },
    297   {net::ERR_BLOCKED_ENROLLMENT_CHECK_PENDING,
    298    IDS_ERRORPAGES_TITLE_BLOCKED,
    299    IDS_ERRORPAGES_HEADING_BLOCKED_BY_ADMINISTRATOR,
    300    IDS_ERRORPAGES_SUMMARY_BLOCKED_ENROLLMENT_CHECK_PENDING,
    301    IDS_ERRORPAGES_DETAILS_BLOCKED_ENROLLMENT_CHECK_PENDING,
    302    SUGGEST_CHECK_CONNECTION,
    303   },
    304 };
    305 
    306 // Special error page to be used in the case of navigating back to a page
    307 // generated by a POST.  LocalizedError::HasStrings expects this net error code
    308 // to also appear in the array above.
    309 const LocalizedErrorMap repost_error = {
    310   net::ERR_CACHE_MISS,
    311   IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
    312   IDS_HTTP_POST_WARNING_TITLE,
    313   IDS_ERRORPAGES_HTTP_POST_WARNING,
    314   IDS_ERRORPAGES_DETAILS_CACHE_MISS,
    315   SUGGEST_RELOAD,
    316 };
    317 
    318 const LocalizedErrorMap http_error_options[] = {
    319   {403,
    320    IDS_ERRORPAGES_TITLE_ACCESS_DENIED,
    321    IDS_ERRORPAGES_HEADING_ACCESS_DENIED,
    322    IDS_ERRORPAGES_SUMMARY_FORBIDDEN,
    323    IDS_ERRORPAGES_DETAILS_FORBIDDEN,
    324    SUGGEST_NONE,
    325   },
    326   {410,
    327    IDS_ERRORPAGES_TITLE_NOT_FOUND,
    328    IDS_ERRORPAGES_HEADING_NOT_FOUND,
    329    IDS_ERRORPAGES_SUMMARY_GONE,
    330    IDS_ERRORPAGES_DETAILS_GONE,
    331    SUGGEST_NONE,
    332   },
    333 
    334   {500,
    335    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    336    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
    337    IDS_ERRORPAGES_SUMMARY_INTERNAL_SERVER_ERROR,
    338    IDS_ERRORPAGES_DETAILS_INTERNAL_SERVER_ERROR,
    339    SUGGEST_RELOAD,
    340   },
    341   {501,
    342    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    343    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
    344    IDS_ERRORPAGES_SUMMARY_WEBSITE_CANNOT_HANDLE,
    345    IDS_ERRORPAGES_DETAILS_NOT_IMPLEMENTED,
    346    SUGGEST_NONE,
    347   },
    348   {502,
    349    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    350    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
    351    IDS_ERRORPAGES_SUMMARY_BAD_GATEWAY,
    352    IDS_ERRORPAGES_DETAILS_BAD_GATEWAY,
    353    SUGGEST_RELOAD,
    354   },
    355   {503,
    356    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    357    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
    358    IDS_ERRORPAGES_SUMMARY_SERVICE_UNAVAILABLE,
    359    IDS_ERRORPAGES_DETAILS_SERVICE_UNAVAILABLE,
    360    SUGGEST_RELOAD,
    361   },
    362   {504,
    363    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    364    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
    365    IDS_ERRORPAGES_SUMMARY_GATEWAY_TIMEOUT,
    366    IDS_ERRORPAGES_DETAILS_GATEWAY_TIMEOUT,
    367    SUGGEST_RELOAD,
    368   },
    369   {505,
    370    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
    371    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
    372    IDS_ERRORPAGES_SUMMARY_WEBSITE_CANNOT_HANDLE,
    373    IDS_ERRORPAGES_DETAILS_HTTP_VERSION_NOT_SUPPORTED,
    374    SUGGEST_NONE,
    375   },
    376 };
    377 
    378 const LocalizedErrorMap dns_probe_error_options[] = {
    379   {chrome_common_net::DNS_PROBE_POSSIBLE,
    380    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
    381    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
    382    IDS_ERRORPAGES_SUMMARY_DNS_PROBE_RUNNING,
    383    IDS_ERRORPAGES_DETAILS_DNS_PROBE_RUNNING,
    384    SUGGEST_RELOAD,
    385   },
    386 
    387   // DNS_PROBE_NOT_RUN is not here; NetErrorHelper will restore the original
    388   // error, which might be one of several DNS-related errors.
    389 
    390   {chrome_common_net::DNS_PROBE_STARTED,
    391    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
    392    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
    393    IDS_ERRORPAGES_SUMMARY_DNS_PROBE_RUNNING,
    394    IDS_ERRORPAGES_DETAILS_DNS_PROBE_RUNNING,
    395    // Include SUGGEST_RELOAD so the More button doesn't jump when we update.
    396    SUGGEST_RELOAD,
    397   },
    398 
    399   // DNS_PROBE_FINISHED_UNKNOWN is not here; NetErrorHelper will restore the
    400   // original error, which might be one of several DNS-related errors.
    401 
    402   {chrome_common_net::DNS_PROBE_FINISHED_NO_INTERNET,
    403    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
    404    IDS_ERRORPAGES_HEADING_INTERNET_DISCONNECTED,
    405    IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED,
    406    IDS_ERRORPAGES_DETAILS_INTERNET_DISCONNECTED,
    407    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG,
    408   },
    409   {chrome_common_net::DNS_PROBE_FINISHED_BAD_CONFIG,
    410    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
    411    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
    412    IDS_ERRORPAGES_SUMMARY_NAME_NOT_RESOLVED,
    413    IDS_ERRORPAGES_DETAILS_NAME_NOT_RESOLVED,
    414    SUGGEST_RELOAD | SUGGEST_DNS_CONFIG | SUGGEST_FIREWALL_CONFIG,
    415   },
    416   {chrome_common_net::DNS_PROBE_FINISHED_NXDOMAIN,
    417    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
    418    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
    419    IDS_ERRORPAGES_SUMMARY_NAME_NOT_RESOLVED,
    420    IDS_ERRORPAGES_DETAILS_NAME_NOT_RESOLVED,
    421    SUGGEST_RELOAD,
    422   },
    423 };
    424 
    425 const LocalizedErrorMap* FindErrorMapInArray(const LocalizedErrorMap* maps,
    426                                                    size_t num_maps,
    427                                                    int error_code) {
    428   for (size_t i = 0; i < num_maps; ++i) {
    429     if (maps[i].error_code == error_code)
    430       return &maps[i];
    431   }
    432   return NULL;
    433 }
    434 
    435 const LocalizedErrorMap* LookupErrorMap(const std::string& error_domain,
    436                                         int error_code, bool is_post) {
    437   if (error_domain == net::kErrorDomain) {
    438     // Display a different page in the special case of navigating through the
    439     // history to an uncached page created by a POST.
    440     if (is_post && error_code == net::ERR_CACHE_MISS)
    441       return &repost_error;
    442     return FindErrorMapInArray(net_error_options,
    443                                arraysize(net_error_options),
    444                                error_code);
    445   } else if (error_domain == LocalizedError::kHttpErrorDomain) {
    446     return FindErrorMapInArray(http_error_options,
    447                                arraysize(http_error_options),
    448                                error_code);
    449   } else if (error_domain == chrome_common_net::kDnsProbeErrorDomain) {
    450     const LocalizedErrorMap* map =
    451         FindErrorMapInArray(dns_probe_error_options,
    452                             arraysize(dns_probe_error_options),
    453                             error_code);
    454     DCHECK(map);
    455     return map;
    456   } else {
    457     NOTREACHED();
    458     return NULL;
    459   }
    460 }
    461 
    462 bool LocaleIsRTL() {
    463   return base::i18n::IsRTL();
    464 }
    465 
    466 // Returns a dictionary containing the strings for the settings menu under the
    467 // wrench, and the advanced settings button.
    468 base::DictionaryValue* GetStandardMenuItemsText() {
    469   base::DictionaryValue* standard_menu_items_text = new base::DictionaryValue();
    470   standard_menu_items_text->SetString("settingsTitle",
    471       l10n_util::GetStringUTF16(IDS_SETTINGS_TITLE));
    472   standard_menu_items_text->SetString("advancedTitle",
    473       l10n_util::GetStringUTF16(IDS_SETTINGS_SHOW_ADVANCED_SETTINGS));
    474   return standard_menu_items_text;
    475 }
    476 
    477 // Gets the icon class for a given |error_domain| and |error_code|.
    478 const char* GetIconClassForError(const std::string& error_domain,
    479                                  int error_code) {
    480   if ((error_code == net::ERR_INTERNET_DISCONNECTED &&
    481        error_domain == net::kErrorDomain) ||
    482       (error_code == chrome_common_net::DNS_PROBE_FINISHED_NO_INTERNET &&
    483        error_domain == chrome_common_net::kDnsProbeErrorDomain))
    484     return "icon-offline";
    485 
    486   return "icon-generic";
    487 }
    488 
    489 }  // namespace
    490 
    491 const char LocalizedError::kHttpErrorDomain[] = "http";
    492 
    493 LocalizedError::ErrorPageParams::ErrorPageParams()
    494     : suggest_reload(false),
    495       reload_tracking_id(-1),
    496       search_tracking_id(-1) {
    497 }
    498 
    499 LocalizedError::ErrorPageParams::~ErrorPageParams() {
    500 }
    501 
    502 void LocalizedError::GetStrings(int error_code,
    503                                 const std::string& error_domain,
    504                                 const GURL& failed_url,
    505                                 bool is_post,
    506                                 bool show_stale_load_button,
    507                                 const std::string& locale,
    508                                 const std::string& accept_languages,
    509                                 scoped_ptr<ErrorPageParams> params,
    510                                 base::DictionaryValue* error_strings) {
    511   bool rtl = LocaleIsRTL();
    512   error_strings->SetString("textdirection", rtl ? "rtl" : "ltr");
    513 
    514   // Grab the strings and settings that depend on the error type.  Init
    515   // options with default values.
    516   LocalizedErrorMap options = {
    517     0,
    518     IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
    519     IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
    520     IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
    521     kErrorPagesNoDetails,
    522     SUGGEST_NONE,
    523   };
    524 
    525   const LocalizedErrorMap* error_map = LookupErrorMap(error_domain, error_code,
    526                                                       is_post);
    527   if (error_map)
    528     options = *error_map;
    529 
    530   // If we got "access denied" but the url was a file URL, then we say it was a
    531   // file instead of just using the "not available" default message. Just adding
    532   // ERR_ACCESS_DENIED to the map isn't sufficient, since that message may be
    533   // generated by some OSs when the operation doesn't involve a file URL.
    534   if (error_domain == net::kErrorDomain &&
    535       error_code == net::ERR_ACCESS_DENIED &&
    536       failed_url.scheme() == "file") {
    537     options.title_resource_id = IDS_ERRORPAGES_TITLE_ACCESS_DENIED;
    538     options.heading_resource_id = IDS_ERRORPAGES_HEADING_FILE_ACCESS_DENIED;
    539     options.summary_resource_id = IDS_ERRORPAGES_SUMMARY_FILE_ACCESS_DENIED;
    540     options.details_resource_id = IDS_ERRORPAGES_DETAILS_FILE_ACCESS_DENIED;
    541     options.suggestions = SUGGEST_NONE;
    542   }
    543 
    544   base::string16 failed_url_string(net::FormatUrl(
    545       failed_url, accept_languages, net::kFormatUrlOmitNothing,
    546       net::UnescapeRule::NORMAL, NULL, NULL, NULL));
    547   // URLs are always LTR.
    548   if (rtl)
    549     base::i18n::WrapStringWithLTRFormatting(&failed_url_string);
    550   error_strings->SetString("title",
    551       l10n_util::GetStringFUTF16(options.title_resource_id, failed_url_string));
    552   error_strings->SetString("heading",
    553       l10n_util::GetStringUTF16(options.heading_resource_id));
    554 
    555   std::string icon_class = GetIconClassForError(error_domain, error_code);
    556   error_strings->SetString("iconClass", icon_class);
    557 
    558   base::DictionaryValue* summary = new base::DictionaryValue;
    559   summary->SetString("msg",
    560       l10n_util::GetStringUTF16(options.summary_resource_id));
    561   summary->SetString("failedUrl", failed_url_string);
    562   summary->SetString("hostName", net::IDNToUnicode(failed_url.host(),
    563                                                    accept_languages));
    564   summary->SetString("productName",
    565                      l10n_util::GetStringUTF16(IDS_PRODUCT_NAME));
    566 
    567   error_strings->SetString(
    568       "more", l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_MORE));
    569   error_strings->SetString(
    570       "less", l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_LESS));
    571   error_strings->Set("summary", summary);
    572 
    573   if (options.details_resource_id != kErrorPagesNoDetails) {
    574     error_strings->SetString(
    575         "errorDetails", l10n_util::GetStringUTF16(options.details_resource_id));
    576   }
    577 
    578   base::string16 error_string;
    579   if (error_domain == net::kErrorDomain) {
    580     // Non-internationalized error string, for debugging Chrome itself.
    581     std::string ascii_error_string = net::ErrorToString(error_code);
    582     // Remove the leading "net::" from the returned string.
    583     DCHECK(StartsWithASCII(ascii_error_string, "net::", true));
    584     ascii_error_string.erase(0, 5);
    585     error_string = base::ASCIIToUTF16(ascii_error_string);
    586   } else if (error_domain == chrome_common_net::kDnsProbeErrorDomain) {
    587     std::string ascii_error_string =
    588         chrome_common_net::DnsProbeStatusToString(error_code);
    589     error_string = base::ASCIIToUTF16(ascii_error_string);
    590   } else {
    591     DCHECK_EQ(LocalizedError::kHttpErrorDomain, error_domain);
    592     error_string = base::IntToString16(error_code);
    593   }
    594   error_strings->SetString("errorCode",
    595       l10n_util::GetStringFUTF16(IDS_ERRORPAGES_ERROR_CODE, error_string));
    596 
    597   // Platform specific information for diagnosing network issues on OSX and
    598   // Windows.
    599 #if defined(OS_MACOSX) || defined(OS_WIN)
    600   if (error_domain == net::kErrorDomain &&
    601       error_code == net::ERR_INTERNET_DISCONNECTED) {
    602     int platform_string_id =
    603         IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_PLATFORM;
    604 #if defined(OS_WIN)
    605     // Different versions of Windows have different instructions.
    606     base::win::Version windows_version = base::win::GetVersion();
    607     if (windows_version < base::win::VERSION_VISTA) {
    608       // XP, XP64, and Server 2003.
    609       platform_string_id =
    610           IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_PLATFORM_XP;
    611     } else if (windows_version == base::win::VERSION_VISTA) {
    612       // Vista
    613       platform_string_id =
    614           IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_PLATFORM_VISTA;
    615     }
    616 #endif  // defined(OS_WIN)
    617     // Lead with the general error description, and suffix with the platform
    618     // dependent portion of the summary section.
    619     summary->SetString("msg",
    620         l10n_util::GetStringFUTF16(
    621             IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_INSTRUCTIONS_TEMPLATE,
    622             l10n_util::GetStringUTF16(options.summary_resource_id),
    623             l10n_util::GetStringUTF16(platform_string_id)));
    624   }
    625 #endif  // defined(OS_MACOSX) || defined(OS_WIN)
    626 
    627   // If no parameters were provided, use the defaults.
    628   if (!params) {
    629     params.reset(new ErrorPageParams());
    630     params->suggest_reload = !!(options.suggestions & SUGGEST_RELOAD);
    631   }
    632 
    633   base::ListValue* suggestions = NULL;
    634   bool use_default_suggestions = true;
    635   if (!params->override_suggestions) {
    636     suggestions = new base::ListValue();
    637   } else {
    638     suggestions = params->override_suggestions.release();
    639     use_default_suggestions = false;
    640   }
    641 
    642   error_strings->Set("suggestions", suggestions);
    643 
    644   if (params->search_url.is_valid()) {
    645     error_strings->SetString("searchHeader",
    646         l10n_util::GetStringUTF16(IDS_ERRORPAGES_SUGGESTION_GOOGLE_SEARCH));
    647     error_strings->SetString("searchUrl", params->search_url.spec());
    648     error_strings->SetString("searchTerms", params->search_terms);
    649     error_strings->SetInteger("searchTrackingId", params->search_tracking_id);
    650   }
    651 
    652   // Add the reload suggestion, if needed.
    653   if (params->suggest_reload) {
    654     if (!is_post) {
    655       base::DictionaryValue* reload_button = new base::DictionaryValue;
    656       reload_button->SetString(
    657           "msg", l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_RELOAD));
    658       reload_button->SetString("reloadUrl", failed_url.spec());
    659       error_strings->Set("reloadButton", reload_button);
    660       reload_button->SetInteger("reloadTrackingId", params->reload_tracking_id);
    661     } else {
    662       // If the page was created by a post, it can't be reloaded in the same
    663       // way, so just add a suggestion instead.
    664       // TODO(mmenke):  Make the reload button bring up the repost confirmation
    665       //                dialog for pages resulting from posts.
    666       base::DictionaryValue* suggest_reload_repost = new base::DictionaryValue;
    667       suggest_reload_repost->SetString("header",
    668           l10n_util::GetStringUTF16(
    669               IDS_ERRORPAGES_SUGGESTION_RELOAD_REPOST_HEADER));
    670       suggest_reload_repost->SetString("body",
    671           l10n_util::GetStringUTF16(
    672               IDS_ERRORPAGES_SUGGESTION_RELOAD_REPOST_BODY));
    673       // Add at the front, so it appears before other suggestions, in the case
    674       // suggestions are being overridden by |params|.
    675       suggestions->Insert(0, suggest_reload_repost);
    676     }
    677   }
    678 
    679   // If not using the default suggestions, nothing else to do.
    680   if (!use_default_suggestions)
    681     return;
    682 
    683   if (show_stale_load_button) {
    684     base::DictionaryValue* stale_load_button = new base::DictionaryValue;
    685     stale_load_button->SetString(
    686         "msg", l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_LOAD_STALE));
    687     stale_load_button->SetString(
    688         "title",
    689         l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_LOAD_STALE_HELP));
    690     error_strings->Set("staleLoadButton", stale_load_button);
    691   }
    692 
    693 #if defined(OS_CHROMEOS)
    694   error_strings->SetString(
    695       "diagnose", l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_DIAGNOSE));
    696 #endif  // defined(OS_CHROMEOS)
    697 
    698   if (options.suggestions & SUGGEST_CHECK_CONNECTION) {
    699     base::DictionaryValue* suggest_check_connection = new base::DictionaryValue;
    700     suggest_check_connection->SetString("header",
    701         l10n_util::GetStringUTF16(
    702             IDS_ERRORPAGES_SUGGESTION_CHECK_CONNECTION_HEADER));
    703     suggest_check_connection->SetString("body",
    704         l10n_util::GetStringUTF16(
    705             IDS_ERRORPAGES_SUGGESTION_CHECK_CONNECTION_BODY));
    706     suggestions->Append(suggest_check_connection);
    707   }
    708 
    709   if (options.suggestions & SUGGEST_DNS_CONFIG) {
    710     base::DictionaryValue* suggest_dns_config = new base::DictionaryValue;
    711     suggest_dns_config->SetString("header",
    712         l10n_util::GetStringUTF16(
    713             IDS_ERRORPAGES_SUGGESTION_DNS_CONFIG_HEADER));
    714     suggest_dns_config->SetString("body",
    715         l10n_util::GetStringUTF16(
    716             IDS_ERRORPAGES_SUGGESTION_DNS_CONFIG_BODY));
    717     suggestions->Append(suggest_dns_config);
    718 
    719     base::DictionaryValue* suggest_network_prediction =
    720         GetStandardMenuItemsText();
    721     suggest_network_prediction->SetString("header",
    722         l10n_util::GetStringUTF16(
    723             IDS_ERRORPAGES_SUGGESTION_NETWORK_PREDICTION_HEADER));
    724     suggest_network_prediction->SetString("body",
    725         l10n_util::GetStringUTF16(
    726             IDS_ERRORPAGES_SUGGESTION_NETWORK_PREDICTION_BODY));
    727     suggest_network_prediction->SetString(
    728         "noNetworkPredictionTitle",
    729         l10n_util::GetStringUTF16(
    730             IDS_NETWORK_PREDICTION_ENABLED_DESCRIPTION));
    731     suggestions->Append(suggest_network_prediction);
    732   }
    733 
    734   if (options.suggestions & SUGGEST_FIREWALL_CONFIG) {
    735     base::DictionaryValue* suggest_firewall_config = new base::DictionaryValue;
    736     suggest_firewall_config->SetString("header",
    737         l10n_util::GetStringUTF16(
    738             IDS_ERRORPAGES_SUGGESTION_FIREWALL_CONFIG_HEADER));
    739     suggest_firewall_config->SetString("body",
    740         l10n_util::GetStringUTF16(
    741             IDS_ERRORPAGES_SUGGESTION_FIREWALL_CONFIG_BODY));
    742     suggestions->Append(suggest_firewall_config);
    743   }
    744 
    745   if (options.suggestions & SUGGEST_PROXY_CONFIG) {
    746     base::DictionaryValue* suggest_proxy_config = GetStandardMenuItemsText();
    747     suggest_proxy_config->SetString("header",
    748         l10n_util::GetStringUTF16(
    749             IDS_ERRORPAGES_SUGGESTION_PROXY_CONFIG_HEADER));
    750     suggest_proxy_config->SetString("body",
    751         l10n_util::GetStringFUTF16(IDS_ERRORPAGES_SUGGESTION_PROXY_CONFIG_BODY,
    752             l10n_util::GetStringUTF16(
    753                 IDS_ERRORPAGES_SUGGESTION_PROXY_DISABLE_PLATFORM)));
    754     suggest_proxy_config->SetString("proxyTitle",
    755         l10n_util::GetStringUTF16(IDS_OPTIONS_PROXIES_CONFIGURE_BUTTON));
    756 
    757     suggestions->Append(suggest_proxy_config);
    758   }
    759 
    760   if (options.suggestions & SUGGEST_DISABLE_EXTENSION) {
    761     base::DictionaryValue* suggest_disable_extension =
    762         new base::DictionaryValue;
    763     // There's only a header for this suggestion.
    764     suggest_disable_extension->SetString("header",
    765         l10n_util::GetStringUTF16(
    766             IDS_ERRORPAGES_SUGGESTION_DISABLE_EXTENSION_HEADER));
    767     suggestions->Append(suggest_disable_extension);
    768   }
    769 
    770   if (options.suggestions & SUGGEST_VIEW_POLICIES) {
    771     base::DictionaryValue* suggest_view_policies = new base::DictionaryValue;
    772     suggest_view_policies->SetString(
    773         "header",
    774         l10n_util::GetStringUTF16(
    775             IDS_ERRORPAGES_SUGGESTION_VIEW_POLICIES_HEADER));
    776     suggest_view_policies->SetString(
    777         "body",
    778         l10n_util::GetStringUTF16(
    779             IDS_ERRORPAGES_SUGGESTION_VIEW_POLICIES_BODY));
    780     suggestions->Append(suggest_view_policies);
    781   }
    782 
    783   if (options.suggestions & SUGGEST_CONTACT_ADMINISTRATOR) {
    784     base::DictionaryValue* suggest_contant_administrator =
    785         new base::DictionaryValue;
    786     suggest_contant_administrator->SetString(
    787         "body",
    788         l10n_util::GetStringUTF16(
    789             IDS_ERRORPAGES_SUGGESTION_CONTACT_ADMINISTRATOR_BODY));
    790     suggestions->Append(suggest_contant_administrator);
    791   }
    792 
    793   if (options.suggestions & SUGGEST_LEARNMORE) {
    794     GURL learn_more_url;
    795     switch (options.error_code) {
    796       case net::ERR_TOO_MANY_REDIRECTS:
    797         learn_more_url = GURL(kRedirectLoopLearnMoreUrl);
    798         break;
    799       case net::ERR_SSL_WEAK_SERVER_EPHEMERAL_DH_KEY:
    800         learn_more_url = GURL(kWeakDHKeyLearnMoreUrl);
    801         break;
    802       default:
    803         break;
    804     }
    805 
    806     if (learn_more_url.is_valid()) {
    807       // Add the language parameter to the URL.
    808       std::string query = learn_more_url.query() + "&hl=" + locale;
    809       GURL::Replacements repl;
    810       repl.SetQueryStr(query);
    811       learn_more_url = learn_more_url.ReplaceComponents(repl);
    812 
    813       base::DictionaryValue* suggest_learn_more = new base::DictionaryValue;
    814       // There's only a body for this suggestion.
    815       suggest_learn_more->SetString("body",
    816           l10n_util::GetStringUTF16(IDS_ERRORPAGES_SUGGESTION_LEARNMORE_BODY));
    817       suggest_learn_more->SetString("learnMoreUrl", learn_more_url.spec());
    818       suggestions->Append(suggest_learn_more);
    819     }
    820   }
    821 }
    822 
    823 base::string16 LocalizedError::GetErrorDetails(const blink::WebURLError& error,
    824                                                bool is_post) {
    825   const LocalizedErrorMap* error_map =
    826       LookupErrorMap(error.domain.utf8(), error.reason, is_post);
    827   if (error_map)
    828     return l10n_util::GetStringUTF16(error_map->details_resource_id);
    829   else
    830     return l10n_util::GetStringUTF16(IDS_ERRORPAGES_DETAILS_UNKNOWN);
    831 }
    832 
    833 bool LocalizedError::HasStrings(const std::string& error_domain,
    834                                 int error_code) {
    835   // Whether or not the there are strings for an error does not depend on
    836   // whether or not the page was be generated by a POST, so just claim it was
    837   // not.
    838   return LookupErrorMap(error_domain, error_code, /*is_post=*/false) != NULL;
    839 }
    840 
    841 void LocalizedError::GetAppErrorStrings(
    842     const GURL& display_url,
    843     const extensions::Extension* app,
    844     base::DictionaryValue* error_strings) {
    845   DCHECK(app);
    846 
    847   bool rtl = LocaleIsRTL();
    848   error_strings->SetString("textdirection", rtl ? "rtl" : "ltr");
    849 
    850   base::string16 failed_url(base::ASCIIToUTF16(display_url.spec()));
    851   // URLs are always LTR.
    852   if (rtl)
    853     base::i18n::WrapStringWithLTRFormatting(&failed_url);
    854   error_strings->SetString(
    855      "url", l10n_util::GetStringFUTF16(IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
    856                                        failed_url.c_str()));
    857 
    858   error_strings->SetString("title", app->name());
    859   error_strings->SetString(
    860       "icon",
    861       extensions::IconsInfo::GetIconURL(
    862           app,
    863           extension_misc::EXTENSION_ICON_GIGANTOR,
    864           ExtensionIconSet::MATCH_SMALLER).spec());
    865   error_strings->SetString("name", app->name());
    866   error_strings->SetString(
    867       "msg",
    868       l10n_util::GetStringUTF16(IDS_ERRORPAGES_APP_WARNING));
    869 
    870 #if defined(OS_CHROMEOS)
    871   GURL learn_more_url(kAppWarningLearnMoreUrl);
    872   base::DictionaryValue* suggest_learn_more = new base::DictionaryValue();
    873   suggest_learn_more->SetString("msg",
    874                                 l10n_util::GetStringUTF16(
    875                                     IDS_ERRORPAGES_SUGGESTION_LEARNMORE_BODY));
    876   suggest_learn_more->SetString("learnMoreUrl", learn_more_url.spec());
    877   error_strings->Set("suggestionsLearnMore", suggest_learn_more);
    878 #endif  // defined(OS_CHROMEOS)
    879 }
    880