Implement Networking Private API VerifyAndEncryptCredentials method

components/wifi/wifi_service_win.cc

Index: components/wifi/wifi_service_win.cc
diff --git a/components/wifi/wifi_service_win.cc b/components/wifi/wifi_service_win.cc
index 4fe0724bf50726b24c1fef14e574ea14e1aabedf..04718a4e1f7c9111d02e87f555072ff5a3811fc5 100644
--- a/components/wifi/wifi_service_win.cc
+++ b/components/wifi/wifi_service_win.cc
@@ -25,6 +25,8 @@
 
 namespace {
 const char kWiFiServiceError[] = "Error.WiFiService";
+const char kWiFiServiceErrorNotImplemented[] =
+    "Error.WiFiService.NotImplemented";
 const wchar_t kNwCategoryWizardRegKey[] =
     L"Software\\Microsoft\\Windows NT\\CurrentVersion\\Network\\"
     L"NwCategoryWizard";
@@ -208,6 +210,10 @@ class WiFiServiceImpl : public WiFiService {
   virtual void StartDisconnect(const std::string& network_guid,
                                std::string* error) OVERRIDE;
 
+  virtual void GetPassphraseFromSystem(const std::string& network_guid,
+                                       std::string* passphrase,
+                                       std::string* error) OVERRIDE;
+
   virtual void SetEventObservers(
       scoped_refptr<base::MessageLoopProxy> message_loop_proxy,
       const NetworkGuidListCallback& networks_changed_observer,
@@ -637,6 +643,38 @@ void WiFiServiceImpl::StartDisconnect(const std::string& network_guid,
   CheckError(error_code, kWiFiServiceError, error);
 }
 
+void WiFiServiceImpl::GetPassphraseFromSystem(const std::string& network_guid,
+                                              std::string* passphrase,
+                                              std::string* error) {
+  DWORD error_code = EnsureInitialized();
+  if (CheckError(error_code, kWiFiServiceError, error))
+    return;
+
+  std::string profile_xml;
+  error_code = GetProfile(network_guid, &profile_xml);
+  if (CheckError(error_code, kWiFiServiceError, error))
+    return;
+
+  // Quick check to verify presence of <sharedKey> element.
+  if (profile_xml.find("<sharedKey>") == std::string::npos) {
+    *error = kWiFiServiceError;
+    return;
+  }
+
+  XmlReader reader;
+  if (reader.Load(profile_xml)) {
+    while(reader.Read()) {
+      reader.SkipToElement();
+      if (reader.NodeName() == "keyMaterial") {
+        reader.ReadElementContent(passphrase);
+        return;
+      }
+    }
+  }
+  // Did not find passphrase in the profile.
+  *error = kWiFiServiceError;
+}
+
 void WiFiServiceImpl::SetEventObservers(
     scoped_refptr<base::MessageLoopProxy> message_loop_proxy,
     const NetworkGuidListCallback& networks_changed_observer,
@@ -1450,13 +1488,14 @@ DWORD WiFiServiceImpl::GetProfile(const std::string& network_guid,
 
   DWORD error = ERROR_SUCCESS;
   base::string16 profile_name = ProfileNameFromGUID(network_guid);
+  DWORD flags = WLAN_PROFILE_GET_PLAINTEXT_KEY;
   LPWSTR str_profile_xml = NULL;
   error = WlanGetProfile_function_(client_,
                                    &interface_guid_,
                                    profile_name.c_str(),
                                    NULL,
                                    &str_profile_xml,
-                                   NULL,
+                                   &flags,
                                    NULL);
 
   if (error == ERROR_SUCCESS && str_profile_xml != NULL) {