wifi_sync: add ability to convert WifiCredential to onc properties

components/wifi_sync/wifi_credential.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/wifi_sync/wifi_credential.h"
 
-#include <limits>
-#include <string>
-
+#include "base/i18n/streaming_utf8_validator.h"
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
+#include "base/values.h"
+#include "components/onc/onc_constants.h"
 
 namespace wifi_sync {
 
-WifiCredential::WifiCredential(
-    const std::vector<unsigned char>& ssid,
-    WifiSecurityClass security_class,
-    const std::string& passphrase)
-    : ssid_(ssid),
-      security_class_(security_class),
-      passphrase_(passphrase) {
-}
-
 WifiCredential::~WifiCredential() {
 }
 
+scoped_ptr<base::DictionaryValue> WifiCredential::ToOncProperties() const {
+  const std::string ssid_utf8(ssid().begin(), ssid().end());
+  // TODO(quiche): Remove this test, once ONC suports non-UTF-8 SSIDs.
+  // crbug.com/432546.
+  if (!base::StreamingUtf8Validator::Validate(ssid_utf8)) {
+    LOG(ERROR) << "SSID is not valid UTF-8";
+    return nullptr;
+  }
+
+  std::string onc_security;
+  if (!WifiSecurityClassToOncSecurityString(security_class(), &onc_security)) {
+    NOTREACHED() << "Failed to convert SecurityClass with value "
+                 << security_class();
+    return nullptr;
+  }
+
+  auto onc_properties = make_scoped_ptr(new base::DictionaryValue());

[mukesh agrawal, 2015/01/09 02:00:18]

I think auto is appropriate here, since the rest of the line is almost exactly
stating the type (scoped_ptr<base::DictionaryValue>). Let me know if that's
mistaken.

[erikwright (departed), 2015/01/09 14:58:20]

This would be more typically done without the make_scoped_ptr:

scoped_ptr<base::DictionaryValue()> onc_properties(new base::DictionaryValue());

I don't think that's longer by more than a few characters and reads a lot better
to habituated Chromium developers.

[mukesh agrawal, 2015/01/09 19:00:02]

Done.

+  onc_properties->Set(onc::toplevel_config::kType,
+                      new base::StringValue(onc::network_type::kWiFi));
+  // TODO(quiche): Switch to the HexSSID property, once ONC fully supports it.
+  // crbug.com/432546.
+  onc_properties->Set(onc::network_config::WifiProperty(onc::wifi::kSSID),
+                      new base::StringValue(ssid_utf8));
+  onc_properties->Set(onc::network_config::WifiProperty(onc::wifi::kSecurity),
+                      new base::StringValue(onc_security));
+  if (WifiSecurityClassSupportsPassphrases(security_class())) {
+    onc_properties->Set(
+        onc::network_config::WifiProperty(onc::wifi::kPassphrase),
+        new base::StringValue(passphrase()));
+  }
+  return onc_properties;
+}
+
 std::string WifiCredential::ToString() const {
   return base::StringPrintf(
       "[SSID (hex): %s, SecurityClass: %d]",
       base::HexEncode(&ssid_.front(), ssid_.size()).c_str(),
       security_class_);  // Passphrase deliberately omitted.
 }
 
 // static
+scoped_ptr<WifiCredential> WifiCredential::Create(
+    const SsidBytes& ssid,
+    WifiSecurityClass security_class,
+    const std::string& passphrase) {
+  if (security_class == SECURITY_CLASS_INVALID) {
+    LOG(ERROR) << "SecurityClass is invalid.";
+    return nullptr;
+  }
+
+  if (!base::StreamingUtf8Validator::Validate(passphrase)) {
+    LOG(ERROR) << "Passphrase is not valid UTF-8";
+    return nullptr;
+  }
+
+  return make_scoped_ptr(new WifiCredential(ssid, security_class, passphrase));
+}
+
+// static
 bool WifiCredential::IsLessThan(
     const WifiCredential& a, const WifiCredential& b) {
   return a.ssid_ < b.ssid_ ||
       a.security_class_< b.security_class_ ||
       a.passphrase_ < b.passphrase_;
 }
 
 // static
 WifiCredential::CredentialSet WifiCredential::MakeSet() {
   return CredentialSet(WifiCredential::IsLessThan);
 }
 
+// static
+WifiCredential::SsidBytes WifiCredential::MakeSsidBytesForTest(
+    const std::string& ssid) {
+  return SsidBytes(ssid.begin(), ssid.end());
+}
+
+// Private methods.
+
+WifiCredential::WifiCredential(
+    const std::vector<unsigned char>& ssid,
+    WifiSecurityClass security_class,
+    const std::string& passphrase)
+    : ssid_(ssid),
+      security_class_(security_class),
+      passphrase_(passphrase) {
+}
+
 }  // namespace wifi_sync