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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 "google_apis/gaia/gaia_auth_util.h"
      6 
      7 #include "base/json/json_reader.h"
      8 #include "base/logging.h"
      9 #include "base/strings/string_split.h"
     10 #include "base/strings/string_util.h"
     11 #include "base/values.h"
     12 #include "google_apis/gaia/gaia_urls.h"
     13 #include "url/gurl.h"
     14 
     15 namespace gaia {
     16 
     17 namespace {
     18 
     19 const char kGmailDomain[] = "gmail.com";
     20 const char kGooglemailDomain[] = "googlemail.com";
     21 
     22 std::string CanonicalizeEmailImpl(const std::string& email_address,
     23                                   bool change_googlemail_to_gmail) {
     24   std::vector<std::string> parts;
     25   char at = '@';
     26   base::SplitString(email_address, at, &parts);
     27   if (parts.size() != 2U) {
     28     NOTREACHED() << "expecting exactly one @, but got " << parts.size()-1 <<
     29         " : " << email_address;
     30   } else {
     31     if (change_googlemail_to_gmail && parts[1] == kGooglemailDomain)
     32       parts[1] = kGmailDomain;
     33 
     34     if (parts[1] == kGmailDomain)  // only strip '.' for gmail accounts.
     35       base::RemoveChars(parts[0], ".", &parts[0]);
     36   }
     37 
     38   std::string new_email = StringToLowerASCII(JoinString(parts, at));
     39   VLOG(1) << "Canonicalized " << email_address << " to " << new_email;
     40   return new_email;
     41 }
     42 
     43 }  // namespace
     44 
     45 std::string CanonicalizeEmail(const std::string& email_address) {
     46   // CanonicalizeEmail() is called to process email strings that are eventually
     47   // shown to the user, and may also be used in persisting email strings.  To
     48   // avoid breaking this existing behavior, this function will not try to
     49   // change googlemail to gmail.
     50   return CanonicalizeEmailImpl(email_address, false);
     51 }
     52 
     53 std::string CanonicalizeDomain(const std::string& domain) {
     54   // Canonicalization of domain names means lower-casing them. Make sure to
     55   // update this function in sync with Canonicalize if this ever changes.
     56   return StringToLowerASCII(domain);
     57 }
     58 
     59 std::string SanitizeEmail(const std::string& email_address) {
     60   std::string sanitized(email_address);
     61 
     62   // Apply a default domain if necessary.
     63   if (sanitized.find('@') == std::string::npos) {
     64     sanitized += '@';
     65     sanitized += kGmailDomain;
     66   }
     67 
     68   return sanitized;
     69 }
     70 
     71 bool AreEmailsSame(const std::string& email1, const std::string& email2) {
     72   return CanonicalizeEmailImpl(gaia::SanitizeEmail(email1), true) ==
     73       CanonicalizeEmailImpl(gaia::SanitizeEmail(email2), true);
     74 }
     75 
     76 std::string ExtractDomainName(const std::string& email_address) {
     77   // First canonicalize which will also verify we have proper domain part.
     78   std::string email = CanonicalizeEmail(email_address);
     79   size_t separator_pos = email.find('@');
     80   if (separator_pos != email.npos && separator_pos < email.length() - 1)
     81     return email.substr(separator_pos + 1);
     82   else
     83     NOTREACHED() << "Not a proper email address: " << email;
     84   return std::string();
     85 }
     86 
     87 bool IsGaiaSignonRealm(const GURL& url) {
     88   if (!url.SchemeIsSecure())
     89     return false;
     90 
     91   return url == GaiaUrls::GetInstance()->gaia_url();
     92 }
     93 
     94 
     95 bool ParseListAccountsData(
     96     const std::string& data,
     97     std::vector<std::pair<std::string, bool> >* accounts) {
     98   accounts->clear();
     99 
    100   // Parse returned data and make sure we have data.
    101   scoped_ptr<base::Value> value(base::JSONReader::Read(data));
    102   if (!value)
    103     return false;
    104 
    105   base::ListValue* list;
    106   if (!value->GetAsList(&list) || list->GetSize() < 2)
    107     return false;
    108 
    109   // Get list of account info.
    110   base::ListValue* account_list;
    111   if (!list->GetList(1, &account_list) || accounts == NULL)
    112     return false;
    113 
    114   // Build a vector of accounts from the cookie.  Order is important: the first
    115   // account in the list is the primary account.
    116   for (size_t i = 0; i < account_list->GetSize(); ++i) {
    117     base::ListValue* account;
    118     if (account_list->GetList(i, &account) && account != NULL) {
    119       std::string email;
    120       // Canonicalize the email since ListAccounts returns "display email".
    121       if (account->GetString(3, &email) && !email.empty()) {
    122         // New version if ListAccounts indicates whether the email's session
    123         // is still valid or not.  If this value is present and false, assume
    124         // its invalid.  Otherwise assume it's valid to remain compatible with
    125         // old version.
    126         int is_email_valid = 1;
    127         if (!account->GetInteger(9, &is_email_valid))
    128           is_email_valid = 1;
    129 
    130         accounts->push_back(
    131             std::make_pair(CanonicalizeEmail(email), is_email_valid != 0));
    132       }
    133     }
    134   }
    135 
    136   return true;
    137 }
    138 
    139 }  // namespace gaia
    140