Ben Chan | 26692bd | 2014-02-03 16:34:55 -0800 | [diff] [blame^] | 1 | // Copyright (c) 2014 The Chromium OS Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "shill/cellular_bearer.h" |
| 6 | |
| 7 | #include <ModemManager/ModemManager.h> |
| 8 | #include <base/bind.h> |
| 9 | |
| 10 | #include "shill/dbus_properties.h" |
| 11 | #include "shill/dbus_properties_proxy.h" |
| 12 | #include "shill/logging.h" |
| 13 | #include "shill/proxy_factory.h" |
| 14 | |
| 15 | using std::string; |
| 16 | using std::vector; |
| 17 | |
| 18 | namespace shill { |
| 19 | |
| 20 | namespace { |
| 21 | |
| 22 | const char kPropertyAddress[] = "address"; |
| 23 | const char kPropertyDNS1[] = "dns1"; |
| 24 | const char kPropertyDNS2[] = "dns2"; |
| 25 | const char kPropertyDNS3[] = "dns3"; |
| 26 | const char kPropertyGateway[] = "gateway"; |
| 27 | const char kPropertyMethod[] = "method"; |
| 28 | const char kPropertyPrefix[] = "prefix"; |
| 29 | |
| 30 | IPConfig::Method ConvertMMBearerIPConfigMethod(uint32 method) { |
| 31 | switch (method) { |
| 32 | case MM_BEARER_IP_METHOD_PPP: |
| 33 | return IPConfig::kMethodPPP; |
| 34 | case MM_BEARER_IP_METHOD_STATIC: |
| 35 | return IPConfig::kMethodStatic; |
| 36 | case MM_BEARER_IP_METHOD_DHCP: |
| 37 | return IPConfig::kMethodDHCP; |
| 38 | default: |
| 39 | return IPConfig::kMethodUnknown; |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | } // namespace |
| 44 | |
| 45 | CellularBearer::CellularBearer(ProxyFactory *proxy_factory, |
| 46 | const string &dbus_path, |
| 47 | const string &dbus_service) |
| 48 | : proxy_factory_(proxy_factory), |
| 49 | dbus_path_(dbus_path), |
| 50 | dbus_service_(dbus_service), |
| 51 | connected_(false), |
| 52 | ipv4_config_method_(IPConfig::kMethodUnknown), |
| 53 | ipv6_config_method_(IPConfig::kMethodUnknown) { |
| 54 | CHECK(proxy_factory_); |
| 55 | } |
| 56 | |
| 57 | CellularBearer::~CellularBearer() {} |
| 58 | |
| 59 | bool CellularBearer::Init() { |
| 60 | SLOG(Cellular, 3) << __func__ << ": path='" << dbus_path_ |
| 61 | << "', service='" << dbus_service_ << "'"; |
| 62 | |
| 63 | dbus_properties_proxy_.reset( |
| 64 | proxy_factory_->CreateDBusPropertiesProxy(dbus_path_, dbus_service_)); |
| 65 | // It is possible that ProxyFactory::CreateDBusPropertiesProxy() returns NULL |
| 66 | // as the bearer DBus object may no longer exist. |
| 67 | if (!dbus_properties_proxy_) { |
| 68 | LOG(WARNING) << "Failed to create DBus properties proxy for bearer '" |
| 69 | << dbus_path_ << "'. Bearer is likely gone."; |
| 70 | return false; |
| 71 | } |
| 72 | |
| 73 | dbus_properties_proxy_->set_properties_changed_callback(base::Bind( |
| 74 | &CellularBearer::OnDBusPropertiesChanged, base::Unretained(this))); |
| 75 | UpdateProperties(); |
| 76 | return true; |
| 77 | } |
| 78 | |
| 79 | void CellularBearer::GetIPConfigMethodAndProperties( |
| 80 | const DBusPropertiesMap &properties, |
| 81 | IPAddress::Family address_family, |
| 82 | IPConfig::Method *ipconfig_method, |
| 83 | scoped_ptr<IPConfig::Properties> *ipconfig_properties) const { |
| 84 | DCHECK(ipconfig_method); |
| 85 | DCHECK(ipconfig_properties); |
| 86 | |
| 87 | uint32 method; |
| 88 | if (!DBusProperties::GetUint32(properties, kPropertyMethod, &method)) { |
| 89 | SLOG(Cellular, 2) << "Bearer '" << dbus_path_ |
| 90 | << "' does not specify an IP configuration method."; |
| 91 | method = MM_BEARER_IP_METHOD_UNKNOWN; |
| 92 | } |
| 93 | *ipconfig_method = ConvertMMBearerIPConfigMethod(method); |
| 94 | ipconfig_properties->reset(); |
| 95 | |
| 96 | if (*ipconfig_method != IPConfig::kMethodStatic) |
| 97 | return; |
| 98 | |
| 99 | string address, gateway; |
| 100 | if (!DBusProperties::GetString(properties, kPropertyAddress, &address) || |
| 101 | !DBusProperties::GetString(properties, kPropertyGateway, &gateway)) { |
| 102 | SLOG(Cellular, 2) << "Bearer '" << dbus_path_ |
| 103 | << "' static IP configuration does not specify valid " |
| 104 | "address/gateway information."; |
| 105 | *ipconfig_method = IPConfig::kMethodUnknown; |
| 106 | return; |
| 107 | } |
| 108 | |
| 109 | ipconfig_properties->reset(new IPConfig::Properties); |
| 110 | (*ipconfig_properties)->address_family = address_family; |
| 111 | (*ipconfig_properties)->address = address; |
| 112 | (*ipconfig_properties)->gateway = gateway; |
| 113 | |
| 114 | uint32 prefix; |
| 115 | if (!DBusProperties::GetUint32(properties, kPropertyPrefix, &prefix)) { |
| 116 | prefix = IPAddress::GetMaxPrefixLength(address_family); |
| 117 | } |
| 118 | (*ipconfig_properties)->subnet_prefix = prefix; |
| 119 | |
| 120 | string dns; |
| 121 | if (DBusProperties::GetString(properties, kPropertyDNS1, &dns)) { |
| 122 | (*ipconfig_properties)->dns_servers.push_back(dns); |
| 123 | } |
| 124 | if (DBusProperties::GetString(properties, kPropertyDNS2, &dns)) { |
| 125 | (*ipconfig_properties)->dns_servers.push_back(dns); |
| 126 | } |
| 127 | if (DBusProperties::GetString(properties, kPropertyDNS3, &dns)) { |
| 128 | (*ipconfig_properties)->dns_servers.push_back(dns); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | void CellularBearer::ResetProperties() { |
| 133 | connected_ = false; |
| 134 | data_interface_.clear(); |
| 135 | ipv4_config_method_ = IPConfig::kMethodUnknown; |
| 136 | ipv4_config_properties_.reset(); |
| 137 | ipv6_config_method_ = IPConfig::kMethodUnknown; |
| 138 | ipv6_config_properties_.reset(); |
| 139 | } |
| 140 | |
| 141 | void CellularBearer::UpdateProperties() { |
| 142 | ResetProperties(); |
| 143 | |
| 144 | if (!dbus_properties_proxy_) |
| 145 | return; |
| 146 | |
| 147 | DBusPropertiesMap properties = |
| 148 | dbus_properties_proxy_->GetAll(MM_DBUS_INTERFACE_BEARER); |
| 149 | if (properties.empty()) { |
| 150 | LOG(WARNING) << "Could not get properties of bearer '" << dbus_path_ |
| 151 | << "'. Bearer is likely gone and thus ignored."; |
| 152 | return; |
| 153 | } |
| 154 | |
| 155 | OnDBusPropertiesChanged(MM_DBUS_INTERFACE_BEARER, properties, |
| 156 | vector<string>()); |
| 157 | } |
| 158 | |
| 159 | void CellularBearer::OnDBusPropertiesChanged( |
| 160 | const string &interface, |
| 161 | const DBusPropertiesMap &changed_properties, |
| 162 | const vector<string> &/*invalidated_properties*/) { |
| 163 | SLOG(Cellular, 3) << __func__ << ": path=" << dbus_path_ |
| 164 | << ", interface=" << interface; |
| 165 | |
| 166 | if (interface != MM_DBUS_INTERFACE_BEARER) |
| 167 | return; |
| 168 | |
| 169 | bool connected; |
| 170 | if (DBusProperties::GetBool( |
| 171 | changed_properties, MM_BEARER_PROPERTY_CONNECTED, &connected)) { |
| 172 | connected_ = connected; |
| 173 | } |
| 174 | |
| 175 | string data_interface; |
| 176 | if (DBusProperties::GetString( |
| 177 | changed_properties, MM_BEARER_PROPERTY_INTERFACE, &data_interface)) { |
| 178 | data_interface_ = data_interface; |
| 179 | } |
| 180 | |
| 181 | DBusPropertiesMap ipconfig; |
| 182 | if (DBusProperties::GetDBusPropertiesMap( |
| 183 | changed_properties, MM_BEARER_PROPERTY_IP4CONFIG, &ipconfig)) { |
| 184 | GetIPConfigMethodAndProperties(ipconfig, |
| 185 | IPAddress::kFamilyIPv4, |
| 186 | &ipv4_config_method_, |
| 187 | &ipv4_config_properties_); |
| 188 | } |
| 189 | if (DBusProperties::GetDBusPropertiesMap( |
| 190 | changed_properties, MM_BEARER_PROPERTY_IP6CONFIG, &ipconfig)) { |
| 191 | GetIPConfigMethodAndProperties(ipconfig, |
| 192 | IPAddress::kFamilyIPv6, |
| 193 | &ipv6_config_method_, |
| 194 | &ipv6_config_properties_); |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | } // namespace shill |