blob: 722af0581835a40182c69937788370aab787cebe (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
//
// Copyright (C) 2015 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#include "apmanager/firewall_manager.h"
#include <base/bind.h>
#include <brillo/errors/error.h>
#include "apmanager/control_interface.h"
using std::string;
namespace apmanager {
namespace {
const uint16_t kDhcpServerPort = 67;
} // namespace
FirewallManager::FirewallManager() {}
FirewallManager::~FirewallManager() {}
void FirewallManager::Init(ControlInterface* control_interface) {
CHECK(!firewall_proxy_) << "Already started";
firewall_proxy_ =
control_interface->CreateFirewallProxy(
base::Bind(&FirewallManager::OnFirewallServiceAppeared,
weak_factory_.GetWeakPtr()),
base::Bind(&FirewallManager::OnFirewallServiceVanished,
weak_factory_.GetWeakPtr()));
}
void FirewallManager::RequestDHCPPortAccess(const std::string& interface) {
CHECK(firewall_proxy_) << "Proxy not initialized yet";
if (dhcp_access_interfaces_.find(interface) !=
dhcp_access_interfaces_.end()) {
LOG(ERROR) << "DHCP access already requested for interface: " << interface;
return;
}
firewall_proxy_->RequestUdpPortAccess(interface, kDhcpServerPort);
dhcp_access_interfaces_.insert(interface);
}
void FirewallManager::ReleaseDHCPPortAccess(const std::string& interface) {
CHECK(firewall_proxy_) << "Proxy not initialized yet";
if (dhcp_access_interfaces_.find(interface) ==
dhcp_access_interfaces_.end()) {
LOG(ERROR) << "DHCP access has not been requested for interface: "
<< interface;
return;
}
firewall_proxy_->ReleaseUdpPortAccess(interface, kDhcpServerPort);
dhcp_access_interfaces_.erase(interface);
}
void FirewallManager::OnFirewallServiceAppeared() {
LOG(INFO) << __func__;
RequestAllPortsAccess();
}
void FirewallManager::OnFirewallServiceVanished() {
// Nothing need to be done.
LOG(INFO) << __func__;
}
void FirewallManager::RequestAllPortsAccess() {
// Request access to DHCP port for all specified interfaces.
for (const auto& dhcp_interface : dhcp_access_interfaces_) {
firewall_proxy_->RequestUdpPortAccess(dhcp_interface, kDhcpServerPort);
}
}
} // namespace apmanager
|
