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5af31a8886
There is no implicit conversion for scoped enums, so using them without an explicit conversion in varargs functions is undefined behavior. GCC has had a warning about this for a long while, but clang only gained this a few days ago on trunk. Differential Revision: https://phabricator.services.mozilla.com/D181723
77 lines
2.3 KiB
C++
77 lines
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsWindowsDHCPClient.h"
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#include <vector>
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#include "DHCPUtils.h"
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#include "nsNetCID.h"
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#include "nsString.h"
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#include "mozilla/Logging.h"
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#include "mozilla/Components.h"
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namespace mozilla {
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namespace toolkit {
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namespace system {
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namespace windowsDHCPClient {
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LazyLogModule gDhcpLog("windowsDHCPClient");
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#undef LOG
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#define LOG(args) MOZ_LOG(gDhcpLog, LogLevel::Debug, args)
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#define MOZ_MAX_DHCP_OPTION_LENGTH \
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255 // this is the maximum option length in DHCP V4 and 6
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NS_IMPL_ISUPPORTS(nsWindowsDHCPClient, nsIDHCPClient)
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NS_IMETHODIMP
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nsWindowsDHCPClient::GetOption(uint8_t aOption, nsACString& aRetVal) {
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nsCString networkAdapterName;
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nsresult rv;
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rv = GetActiveDHCPNetworkAdapterName(networkAdapterName, mNetworkFunctions);
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if (rv != NS_OK) {
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LOG(
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("Failed to get network adapter name in nsWindowsDHCPClient::GetOption "
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"due to error %d",
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uint32_t(rv)));
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return rv;
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}
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uint32_t sizeOptionValue = MOZ_MAX_DHCP_OPTION_LENGTH;
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std::vector<char> optionValue;
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bool retryingAfterLossOfSignificantData = false;
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do {
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optionValue.resize(sizeOptionValue);
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rv = RetrieveOption(networkAdapterName, aOption, optionValue,
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&sizeOptionValue, mNetworkFunctions);
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if (rv == NS_ERROR_LOSS_OF_SIGNIFICANT_DATA) {
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LOG((
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"In nsWindowsDHCPClient::GetOption, DHCP Option %d required %d bytes",
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aOption, sizeOptionValue));
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if (retryingAfterLossOfSignificantData) {
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break;
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}
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retryingAfterLossOfSignificantData = true;
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}
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} while (rv == NS_ERROR_LOSS_OF_SIGNIFICANT_DATA);
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if (rv != NS_OK) {
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LOG(
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("Failed to get DHCP Option %d nsWindowsDHCPClient::GetOption due to "
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"error %d",
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aOption, uint32_t(rv)));
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return rv;
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}
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aRetVal.Assign(optionValue.data(), sizeOptionValue);
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return NS_OK;
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}
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} // namespace windowsDHCPClient
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} // namespace system
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} // namespace toolkit
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} // namespace mozilla
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