Add NetworkList/NetworkMonitor hooks and C++ wrappers.

ppapi/cpp/private/network_list_private.cc

+// Copyright (c) 2011 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 "ppapi/cpp/private/network_list_private.h"
+
+#include "ppapi/cpp/module_impl.h"
+#include "ppapi/cpp/var.h"
+
+namespace pp {
+
+namespace {
+
+template <> const char* interface_name<PPB_NetworkList_Private>() {
+  return PPB_NETWORKLIST_PRIVATE_INTERFACE;
+}
+
+}  // namespace
+
+NetworkListPrivate::NetworkListPrivate(PP_Resource resource)
+    : Resource(resource) {
+}
+
+// static
+bool NetworkListPrivate::IsAvailable() {
+  return has_interface<PPB_NetworkList_Private>();
+}
+
+uint32_t NetworkListPrivate::GetCount() {
+  if (!has_interface<PPB_NetworkList_Private>())
+    return 0;
+  return get_interface<PPB_NetworkList_Private>()->GetCount(pp_resource());
+}
+
+std::string NetworkListPrivate::GetName(uint32_t index) {
+  if (!has_interface<PPB_NetworkList_Private>())
+    return std::string();
+  Var result(PASS_REF,
+             get_interface<PPB_NetworkList_Private>()->GetName(
+                 pp_resource(), index));
+  return result.is_string() ? result.AsString() : std::string();
+}
+
+PP_NetworkListType_Private NetworkListPrivate::GetType(uint32_t index) {
+  if (!has_interface<PPB_NetworkList_Private>())
+    return PP_NETWORKLIST_ETHERNET;
+  return get_interface<PPB_NetworkList_Private>()->GetType(
+      pp_resource(), index);
+}
+
+PP_NetworkListState_Private NetworkListPrivate::GetState(uint32_t index) {
+  if (!has_interface<PPB_NetworkList_Private>())
+    return PP_NETWORKLIST_DOWN;
+  return get_interface<PPB_NetworkList_Private>()->GetState(
+      pp_resource(), index);
+}
+
+void NetworkListPrivate::GetIpAddresses(
+    uint32_t index,
+    std::vector<PP_NetAddress_Private>* addresses) {
+  if (!has_interface<PPB_NetworkList_Private>())
+    return;
+
+  // Most netword interfaces don't have more than 3 network
+  // interfaces.
+  addresses->resize(3);
+
+  int32_t result = get_interface<PPB_NetworkList_Private>()->GetIpAddresses(
+      pp_resource(), index, &addresses->front(), addresses->size());
+
+  if (result < 0) {

[dmichael (off chromium), 2012/03/01 18:29:54]

Why not <= 0?

[Sergey Ulanov, 2012/03/02 03:01:37]

"result = 0" is a not an error condition - it just means that there are no IP
addresses and this if is here to handle errors. Yes, it would work just fine if
I wrote "<=0" here, but I think it's cleaner to keep error case separate.
result=0 is handled by the code below.

+    addresses->resize(0);
+    return;
+  }
+
+  if (result < static_cast<int32_t>(addresses->size())) {

[dmichael (off chromium), 2012/03/01 18:29:54]

Why not <=? Right now, if you get 3 back, you fall through to the case where you
call GetIpAddresses again, which seems wasteful.

[Sergey Ulanov, 2012/03/02 03:01:37]

Done.

+    addresses->resize(result);
+    return;
+  }
+
+  addresses->resize(result);
+  result = get_interface<PPB_NetworkList_Private>()->GetIpAddresses(
+      pp_resource(), index, &addresses->front(), addresses->size());
+  if (result < 0) {
+    addresses->resize(0);
+  } else if (result < static_cast<int32_t>(addresses->size())) {
+    addresses->resize(result);
+  }
+}
+
+std::string NetworkListPrivate::GetDisplayName(uint32_t index) {
+  if (!has_interface<PPB_NetworkList_Private>())
+    return std::string();
+  Var result(PASS_REF,
+             get_interface<PPB_NetworkList_Private>()->GetDisplayName(
+                 pp_resource(), index));
+  return result.is_string() ? result.AsString() : std::string();
+}
+
+uint32_t NetworkListPrivate::GetMTU(uint32_t index) {
+  if (!has_interface<PPB_NetworkList_Private>())
+    return 0;
+  return get_interface<PPB_NetworkList_Private>()->GetMTU(
+      pp_resource(), index);
+}
+
+}  // namespace pp