1// 2// Copyright (C) 2015 The Android Open Source Project 3// 4// Licensed under the Apache License, Version 2.0 (the "License"); 5// you may not use this file except in compliance with the License. 6// You may obtain a copy of the License at 7// 8// http://www.apache.org/licenses/LICENSE-2.0 9// 10// Unless required by applicable law or agreed to in writing, software 11// distributed under the License is distributed on an "AS IS" BASIS, 12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13// See the License for the specific language governing permissions and 14// limitations under the License. 15// 16 17#include "shill/dbus/chromeos_permission_broker_proxy.h" 18 19#include <string> 20#include <vector> 21 22#include "shill/logging.h" 23 24namespace shill { 25 26// static 27const int ChromeosPermissionBrokerProxy::kInvalidHandle = -1; 28 29ChromeosPermissionBrokerProxy::ChromeosPermissionBrokerProxy( 30 const scoped_refptr<dbus::Bus>& bus) 31 : proxy_(new org::chromium::PermissionBrokerProxy(bus)), 32 lifeline_read_fd_(kInvalidHandle), 33 lifeline_write_fd_(kInvalidHandle) { 34 // TODO(zqiu): register handler for service name owner changes, to 35 // automatically re-request VPN setup when permission broker is restarted. 36} 37 38ChromeosPermissionBrokerProxy::~ChromeosPermissionBrokerProxy() {} 39 40bool ChromeosPermissionBrokerProxy::RequestVpnSetup( 41 const std::vector<std::string>& user_names, 42 const std::string& interface) { 43 if (lifeline_read_fd_ != kInvalidHandle || 44 lifeline_write_fd_ != kInvalidHandle) { 45 LOG(ERROR) << "Already setup?"; 46 return false; 47 } 48 49 // TODO(zqiu): move pipe creation/cleanup to the constructor and destructor. 50 // No need to recreate pipe for each request. 51 int fds[2]; 52 if (pipe(fds) != 0) { 53 LOG(ERROR) << "Failed to create lifeline pipe"; 54 return false; 55 } 56 lifeline_read_fd_ = fds[0]; 57 lifeline_write_fd_ = fds[1]; 58 59 dbus::FileDescriptor dbus_fd(lifeline_read_fd_); 60 dbus_fd.CheckValidity(); 61 brillo::ErrorPtr error; 62 bool success = false; 63 if (!proxy_->RequestVpnSetup( 64 user_names, interface, dbus_fd, &success, &error)) { 65 LOG(ERROR) << "Failed to request VPN setup: " << error->GetCode() 66 << " " << error->GetMessage(); 67 } 68 return success; 69} 70 71bool ChromeosPermissionBrokerProxy::RemoveVpnSetup() { 72 if (lifeline_read_fd_ == kInvalidHandle && 73 lifeline_write_fd_ == kInvalidHandle) { 74 return true; 75 } 76 77 close(lifeline_read_fd_); 78 close(lifeline_write_fd_); 79 lifeline_read_fd_ = kInvalidHandle; 80 lifeline_write_fd_ = kInvalidHandle; 81 brillo::ErrorPtr error; 82 bool success = false; 83 if (!proxy_->RemoveVpnSetup(&success, &error)) { 84 LOG(ERROR) << "Failed to remove VPN setup: " << error->GetCode() 85 << " " << error->GetMessage(); 86 } 87 return success; 88} 89 90} // namespace shill 91