components/signin/core/browser/signin_header_helper.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "components/signin/core/browser/signin_header_helper.h"
   6
   7 #include "base/strings/string_number_conversions.h"
   8 #include "base/strings/string_split.h"
   9 #include "base/strings/stringprintf.h"
  10 #include "components/content_settings/core/browser/cookie_settings.h"
  11 #include "components/google/core/browser/google_util.h"
  12 #include "components/signin/core/common/profile_management_switches.h"
  13 #include "google_apis/gaia/gaia_auth_util.h"
  14 #include "google_apis/gaia/gaia_urls.h"
  15 #include "net/base/escape.h"
  16 #include "net/http/http_response_headers.h"
  17 #include "net/url_request/url_request.h"
  18 #include "url/gurl.h"
  19
  20 namespace {
  21
  22 // Dictionary of fields in a mirror response header.
  23 typedef std::map<std::string, std::string> MirrorResponseHeaderDictionary;
  24
  25 const char kChromeConnectedHeader[] = "X-Chrome-Connected";
  26 const char kChromeManageAccountsHeader[] = "X-Chrome-Manage-Accounts";
  27 const char kContinueUrlAttrName[] = "continue_url";
  28 const char kEmailAttrName[] = "email";
  29 const char kEnableAccountConsistencyAttrName[] = "enable_account_consistency";
  30 const char kGaiaIdAttrName[] = "id";
  31 const char kProfileModeAttrName[] = "mode";
  32 const char kIsSameTabAttrName[] = "is_same_tab";
  33 const char kIsSamlAttrName[] = "is_saml";
  34 const char kServiceTypeAttrName[] = "action";
  35
  36 bool IsDriveOrigin(const GURL& url) {
  37   if (!url.SchemeIsCryptographic())
  38     return false;
  39
  40   const GURL kGoogleDriveURL("https://drive.google.com");
  41   const GURL kGoogleDocsURL("https://docs.google.com");
  42   return url == kGoogleDriveURL || url == kGoogleDocsURL;
  43 }
  44
  45 // Determines the service type that has been passed from GAIA in the header.
  46 signin::GAIAServiceType GetGAIAServiceTypeFromHeader(
  47     const std::string& header_value) {
  48   if (header_value == "SIGNOUT")
  49     return signin::GAIA_SERVICE_TYPE_SIGNOUT;
  50   else if (header_value == "INCOGNITO")
  51     return signin::GAIA_SERVICE_TYPE_INCOGNITO;
  52   else if (header_value == "ADDSESSION")
  53     return signin::GAIA_SERVICE_TYPE_ADDSESSION;
  54   else if (header_value == "REAUTH")
  55     return signin::GAIA_SERVICE_TYPE_REAUTH;
  56   else if (header_value == "SIGNUP")
  57     return signin::GAIA_SERVICE_TYPE_SIGNUP;
  58   else if (header_value == "DEFAULT")
  59     return signin::GAIA_SERVICE_TYPE_DEFAULT;
  60   else
  61     return signin::GAIA_SERVICE_TYPE_NONE;
  62 }
  63
  64 // Parses the mirror response header. Its expected format is
  65 // "key1=value1,key2=value2,...".
  66 MirrorResponseHeaderDictionary ParseMirrorResponseHeader(
  67     const std::string& header_value) {
  68   MirrorResponseHeaderDictionary dictionary;
  69   for (const base::StringPiece& field :
  70        base::SplitStringPiece(header_value, ",", base::KEEP_WHITESPACE,
  71                               base::SPLIT_WANT_NONEMPTY)) {
  72     size_t delim = field.find_first_of('=');
  73     if (delim == std::string::npos) {
  74       DLOG(WARNING) << "Unexpected GAIA header field '" << field << "'.";
  75       continue;
  76     }
  77     dictionary[field.substr(0, delim).as_string()] =
  78         net::UnescapeURLComponent(field.substr(delim + 1).as_string(),
  79                                   net::UnescapeRule::URL_SPECIAL_CHARS);
  80   }
  81   return dictionary;
  82 }
  83
  84 // Returns the parameters contained in the X-Chrome-Manage-Accounts response
  85 // header.
  86 signin::ManageAccountsParams BuildManageAccountsParams(
  87     const std::string& header_value) {
  88   signin::ManageAccountsParams params;
  89   MirrorResponseHeaderDictionary header_dictionary =
  90       ParseMirrorResponseHeader(header_value);
  91   MirrorResponseHeaderDictionary::const_iterator it = header_dictionary.begin();
  92   for (; it != header_dictionary.end(); ++it) {
  93     const std::string key_name(it->first);
  94     if (key_name == kServiceTypeAttrName) {
  95       params.service_type =
  96           GetGAIAServiceTypeFromHeader(header_dictionary[kServiceTypeAttrName]);
  97     } else if (key_name == kEmailAttrName) {
  98       params.email = header_dictionary[kEmailAttrName];
  99     } else if (key_name == kIsSamlAttrName) {
 100       params.is_saml = header_dictionary[kIsSamlAttrName] == "true";
 101     } else if (key_name == kContinueUrlAttrName) {
 102       params.continue_url = header_dictionary[kContinueUrlAttrName];
 103     } else if (key_name == kIsSameTabAttrName) {
 104       params.is_same_tab = header_dictionary[kIsSameTabAttrName] == "true";
 105     } else {
 106       DLOG(WARNING) << "Unexpected GAIA header attribute '" << key_name << "'.";
 107     }
 108   }
 109   return params;
 110 }
 111
 112 }  // namespace
 113
 114 namespace signin {
 115
 116 ManageAccountsParams::ManageAccountsParams()
 117     : service_type(GAIA_SERVICE_TYPE_NONE),
 118       email(""),
 119       is_saml(false),
 120       continue_url(""),
 121       is_same_tab(false) {
 122 #if !defined(OS_IOS)
 123   child_id = 0;
 124   route_id = 0;
 125 #endif  // !defined(OS_IOS)
 126 }
 127
 128 bool SettingsAllowSigninCookies(
 129     content_settings::CookieSettings* cookie_settings) {
 130   GURL gaia_url = GaiaUrls::GetInstance()->gaia_url();
 131   GURL google_url = GaiaUrls::GetInstance()->google_url();
 132   return cookie_settings &&
 133          cookie_settings->IsSettingCookieAllowed(gaia_url, gaia_url) &&
 134          cookie_settings->IsSettingCookieAllowed(google_url, google_url);
 135 }
 136
 137 bool AppendMirrorRequestHeaderIfPossible(
 138     net::URLRequest* request,
 139     const GURL& redirect_url,
 140     const std::string& account_id,
 141     content_settings::CookieSettings* cookie_settings,
 142     int profile_mode_mask) {
 143   if (account_id.empty())
 144     return false;
 145
 146   // If signin cookies are not allowed, don't add the header.
 147   if (SettingsAllowSigninCookies(cookie_settings)) {
 148     return false;
 149   }
 150
 151   // Only set the header for Drive and Gaia always, and other Google properties
 152   // if account consistency is enabled.
 153   // Vasquette, which is integrated with most Google properties, needs the
 154   // header to redirect certain user actions to Chrome native UI. Drive and Gaia
 155   // need the header to tell if the current user is connected. The drive path is
 156   // a temporary workaround until the more generic chrome.principals API is
 157   // available.
 158   const GURL& url = redirect_url.is_empty() ? request->url() : redirect_url;
 159   GURL origin(url.GetOrigin());
 160   bool is_enable_account_consistency = switches::IsEnableAccountConsistency();
 161   bool is_google_url = is_enable_account_consistency &&
 162                        (google_util::IsGoogleDomainUrl(
 163                             url, google_util::ALLOW_SUBDOMAIN,
 164                             google_util::DISALLOW_NON_STANDARD_PORTS) ||
 165                         google_util::IsYoutubeDomainUrl(
 166                             url, google_util::ALLOW_SUBDOMAIN,
 167                             google_util::DISALLOW_NON_STANDARD_PORTS));
 168   if (!is_google_url && !IsDriveOrigin(origin) &&
 169       !gaia::IsGaiaSignonRealm(origin)) {
 170     return false;
 171   }
 172
 173   std::string header_value(base::StringPrintf(
 174       "%s=%s,%s=%s,%s=%s", kGaiaIdAttrName, account_id.c_str(),
 175       kProfileModeAttrName, base::IntToString(profile_mode_mask).c_str(),
 176       kEnableAccountConsistencyAttrName,
 177       is_enable_account_consistency ? "true" : "false"));
 178   request->SetExtraRequestHeaderByName(kChromeConnectedHeader, header_value,
 179                                        false);
 180   return true;
 181 }
 182
 183 ManageAccountsParams BuildManageAccountsParamsIfExists(net::URLRequest* request,
 184                                                        bool is_off_the_record) {
 185   ManageAccountsParams empty_params;
 186   empty_params.service_type = GAIA_SERVICE_TYPE_NONE;
 187   if (!gaia::IsGaiaSignonRealm(request->url().GetOrigin()))
 188     return empty_params;
 189
 190   std::string header_value;
 191   if (!request->response_headers()->GetNormalizedHeader(
 192           kChromeManageAccountsHeader, &header_value)) {
 193     return empty_params;
 194   }
 195
 196   DCHECK(switches::IsEnableAccountConsistency() && !is_off_the_record);
 197   return BuildManageAccountsParams(header_value);
 198 }
 199
 200 }  // namespace signin