| // |
| // Copyright (C) 2013 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 "shill/wifi/wifi_provider.h" |
| |
| #include <stdlib.h> |
| |
| #include <algorithm> |
| #include <limits> |
| #include <set> |
| #include <string> |
| #include <vector> |
| |
| #include <base/bind.h> |
| #include <base/format_macros.h> |
| #include <base/strings/string_number_conversions.h> |
| #include <base/strings/string_split.h> |
| #include <base/strings/string_util.h> |
| |
| #include "shill/error.h" |
| #include "shill/event_dispatcher.h" |
| #include "shill/key_value_store.h" |
| #include "shill/logging.h" |
| #include "shill/manager.h" |
| #include "shill/metrics.h" |
| #include "shill/net/byte_string.h" |
| #include "shill/net/ieee80211.h" |
| #include "shill/net/shill_time.h" |
| #include "shill/profile.h" |
| #include "shill/store_interface.h" |
| #include "shill/technology.h" |
| #include "shill/wifi/wifi_endpoint.h" |
| #include "shill/wifi/wifi_service.h" |
| |
| using base::Bind; |
| using base::SplitString; |
| using base::StringPrintf; |
| using std::set; |
| using std::string; |
| using std::vector; |
| |
| namespace shill { |
| |
| namespace Logging { |
| static auto kModuleLogScope = ScopeLogger::kWiFi; |
| static string ObjectID(WiFiProvider* w) { return "(wifi_provider)"; } |
| } |
| |
| // Note that WiFiProvider generates some manager-level errors, because it |
| // implements the WiFi portion of the Manager.GetService flimflam API. The |
| // API is implemented here, rather than in manager, to keep WiFi-specific |
| // logic in the right place. |
| const char WiFiProvider::kManagerErrorSSIDRequired[] = "must specify SSID"; |
| const char WiFiProvider::kManagerErrorSSIDTooLong[] = "SSID is too long"; |
| const char WiFiProvider::kManagerErrorSSIDTooShort[] = "SSID is too short"; |
| const char WiFiProvider::kManagerErrorUnsupportedSecurityClass[] = |
| "security class is unsupported"; |
| const char WiFiProvider::kManagerErrorUnsupportedSecurityMode[] = |
| "security mode is unsupported"; |
| const char WiFiProvider::kManagerErrorUnsupportedServiceMode[] = |
| "service mode is unsupported"; |
| const char WiFiProvider::kManagerErrorArgumentConflict[] = |
| "provided arguments are inconsistent"; |
| const char WiFiProvider::kFrequencyDelimiter = ':'; |
| const char WiFiProvider::kStartWeekHeader[] = "@"; |
| const time_t WiFiProvider::kIllegalStartWeek = |
| std::numeric_limits<time_t>::max(); |
| const char WiFiProvider::kStorageId[] = "provider_of_wifi"; |
| const char WiFiProvider::kStorageFrequencies[] = "Frequencies"; |
| const int WiFiProvider::kMaxStorageFrequencies = 20; |
| const time_t WiFiProvider::kWeeksToKeepFrequencyCounts = 3; |
| const time_t WiFiProvider::kSecondsPerWeek = 60 * 60 * 24 * 7; |
| |
| WiFiProvider::WiFiProvider(ControlInterface* control_interface, |
| EventDispatcher* dispatcher, |
| Metrics* metrics, |
| Manager* manager) |
| : control_interface_(control_interface), |
| dispatcher_(dispatcher), |
| metrics_(metrics), |
| manager_(manager), |
| running_(false), |
| total_frequency_connections_(-1L), |
| time_(Time::GetInstance()), |
| disable_vht_(false) {} |
| |
| WiFiProvider::~WiFiProvider() {} |
| |
| void WiFiProvider::Start() { |
| running_ = true; |
| } |
| |
| void WiFiProvider::Stop() { |
| SLOG(this, 2) << __func__; |
| while (!services_.empty()) { |
| WiFiServiceRefPtr service = services_.back(); |
| ForgetService(service); |
| SLOG(this, 3) << "WiFiProvider deregistering service " |
| << service->unique_name(); |
| manager_->DeregisterService(service); |
| } |
| service_by_endpoint_.clear(); |
| running_ = false; |
| } |
| |
| void WiFiProvider::CreateServicesFromProfile(const ProfileRefPtr& profile) { |
| const StoreInterface* storage = profile->GetConstStorage(); |
| KeyValueStore args; |
| args.SetString(kTypeProperty, kTypeWifi); |
| bool created_hidden_service = false; |
| for (const auto& group : storage->GetGroupsWithProperties(args)) { |
| vector<uint8_t> ssid_bytes; |
| string network_mode; |
| string security; |
| bool is_hidden = false; |
| if (!GetServiceParametersFromStorage(storage, |
| group, |
| &ssid_bytes, |
| &network_mode, |
| &security, |
| &is_hidden, |
| nullptr)) { |
| continue; |
| } |
| |
| if (FindService(ssid_bytes, network_mode, security)) { |
| // If service already exists, we have nothing to do, since the |
| // service has already loaded its configuration from storage. |
| // This is guaranteed to happen in the single case where |
| // CreateServicesFromProfile() is called on a WiFiProvider from |
| // Manager::PushProfile(): |
| continue; |
| } |
| |
| AddService(ssid_bytes, network_mode, security, is_hidden); |
| |
| // By registering the service in AddService, the rest of the configuration |
| // will be loaded from the profile into the service via ConfigureService(). |
| |
| if (is_hidden) { |
| created_hidden_service = true; |
| } |
| } |
| |
| // If WiFi is unconnected and we created a hidden service as a result |
| // of opening the profile, we should initiate a WiFi scan, which will |
| // allow us to find any hidden services that we may have created. |
| if (created_hidden_service && |
| !manager_->IsTechnologyConnected(Technology::kWifi)) { |
| Error unused_error; |
| manager_->RequestScan(kTypeWifi, &unused_error); |
| } |
| |
| ReportRememberedNetworkCount(); |
| |
| // Only report service source metrics when a user profile is pushed. |
| // This ensures that we have an equal number of samples for the |
| // default profile and user profiles. |
| if (!profile->IsDefault()) { |
| ReportServiceSourceMetrics(); |
| } |
| } |
| |
| ServiceRefPtr WiFiProvider::FindSimilarService( |
| const KeyValueStore& args, Error* error) const { |
| vector<uint8_t> ssid; |
| string mode; |
| string security; |
| bool hidden_ssid; |
| |
| if (!GetServiceParametersFromArgs( |
| args, &ssid, &mode, &security, &hidden_ssid, error)) { |
| return nullptr; |
| } |
| |
| WiFiServiceRefPtr service(FindService(ssid, mode, security)); |
| if (!service) { |
| error->Populate(Error::kNotFound, "Matching service was not found"); |
| } |
| |
| return service; |
| } |
| |
| ServiceRefPtr WiFiProvider::CreateTemporaryService( |
| const KeyValueStore& args, Error* error) { |
| vector<uint8_t> ssid; |
| string mode; |
| string security; |
| bool hidden_ssid; |
| |
| if (!GetServiceParametersFromArgs( |
| args, &ssid, &mode, &security, &hidden_ssid, error)) { |
| return nullptr; |
| } |
| |
| return new WiFiService(control_interface_, |
| dispatcher_, |
| metrics_, |
| manager_, |
| this, |
| ssid, |
| mode, |
| security, |
| hidden_ssid); |
| } |
| |
| ServiceRefPtr WiFiProvider::CreateTemporaryServiceFromProfile( |
| const ProfileRefPtr& profile, const std::string& entry_name, Error* error) { |
| vector<uint8_t> ssid; |
| string mode; |
| string security; |
| bool hidden_ssid; |
| if (!GetServiceParametersFromStorage(profile->GetConstStorage(), |
| entry_name, |
| &ssid, |
| &mode, |
| &security, |
| &hidden_ssid, |
| error)) { |
| return nullptr; |
| } |
| return new WiFiService(control_interface_, |
| dispatcher_, |
| metrics_, |
| manager_, |
| this, |
| ssid, |
| mode, |
| security, |
| hidden_ssid); |
| } |
| |
| ServiceRefPtr WiFiProvider::GetService( |
| const KeyValueStore& args, Error* error) { |
| return GetWiFiService(args, error); |
| } |
| |
| WiFiServiceRefPtr WiFiProvider::GetWiFiService( |
| const KeyValueStore& args, Error* error) { |
| vector<uint8_t> ssid_bytes; |
| string mode; |
| string security_method; |
| bool hidden_ssid; |
| |
| if (!GetServiceParametersFromArgs( |
| args, &ssid_bytes, &mode, &security_method, &hidden_ssid, error)) { |
| return nullptr; |
| } |
| |
| WiFiServiceRefPtr service(FindService(ssid_bytes, mode, security_method)); |
| if (!service) { |
| service = AddService(ssid_bytes, |
| mode, |
| security_method, |
| hidden_ssid); |
| } |
| |
| return service; |
| } |
| |
| WiFiServiceRefPtr WiFiProvider::FindServiceForEndpoint( |
| const WiFiEndpointConstRefPtr& endpoint) { |
| EndpointServiceMap::iterator service_it = |
| service_by_endpoint_.find(endpoint.get()); |
| if (service_it == service_by_endpoint_.end()) |
| return nullptr; |
| return service_it->second; |
| } |
| |
| void WiFiProvider::OnEndpointAdded(const WiFiEndpointConstRefPtr& endpoint) { |
| if (!running_) { |
| return; |
| } |
| |
| WiFiServiceRefPtr service = FindService(endpoint->ssid(), |
| endpoint->network_mode(), |
| endpoint->security_mode()); |
| if (!service) { |
| const bool hidden_ssid = false; |
| service = AddService( |
| endpoint->ssid(), |
| endpoint->network_mode(), |
| WiFiService::ComputeSecurityClass(endpoint->security_mode()), |
| hidden_ssid); |
| } |
| |
| service->AddEndpoint(endpoint); |
| service_by_endpoint_[endpoint.get()] = service; |
| |
| SLOG(this, 1) << "Assigned endpoint " << endpoint->bssid_string() |
| << " to service " << service->unique_name() << "."; |
| |
| manager_->UpdateService(service); |
| } |
| |
| WiFiServiceRefPtr WiFiProvider::OnEndpointRemoved( |
| const WiFiEndpointConstRefPtr& endpoint) { |
| if (!running_) { |
| return nullptr; |
| } |
| |
| WiFiServiceRefPtr service = FindServiceForEndpoint(endpoint); |
| |
| CHECK(service) << "Can't find Service for Endpoint " |
| << "(with BSSID " << endpoint->bssid_string() << ")."; |
| SLOG(this, 1) << "Removing endpoint " << endpoint->bssid_string() |
| << " from Service " << service->unique_name(); |
| service->RemoveEndpoint(endpoint); |
| service_by_endpoint_.erase(endpoint.get()); |
| |
| if (service->HasEndpoints() || service->IsRemembered()) { |
| // Keep services around if they are in a profile or have remaining |
| // endpoints. |
| manager_->UpdateService(service); |
| return nullptr; |
| } |
| |
| ForgetService(service); |
| manager_->DeregisterService(service); |
| |
| return service; |
| } |
| |
| void WiFiProvider::OnEndpointUpdated(const WiFiEndpointConstRefPtr& endpoint) { |
| if (!running_) { |
| return; |
| } |
| |
| WiFiService* service = FindServiceForEndpoint(endpoint).get(); |
| CHECK(service); |
| |
| // If the service still matches the endpoint in its new configuration, |
| // we need only to update the service. |
| if (service->ssid() == endpoint->ssid() && |
| service->mode() == endpoint->network_mode() && |
| service->IsSecurityMatch(endpoint->security_mode())) { |
| service->NotifyEndpointUpdated(endpoint); |
| return; |
| } |
| |
| // The endpoint no longer matches the associated service. Remove the |
| // endpoint, so current references to the endpoint are reset, then add |
| // it again so it can be associated with a new service. |
| OnEndpointRemoved(endpoint); |
| OnEndpointAdded(endpoint); |
| } |
| |
| bool WiFiProvider::OnServiceUnloaded(const WiFiServiceRefPtr& service) { |
| // If the service still has endpoints, it should remain in the service list. |
| if (service->HasEndpoints()) { |
| return false; |
| } |
| |
| // This is the one place where we forget the service but do not also |
| // deregister the service with the manager. However, by returning |
| // true below, the manager will do so itself. |
| ForgetService(service); |
| return true; |
| } |
| |
| void WiFiProvider::LoadAndFixupServiceEntries(Profile* profile) { |
| CHECK(profile); |
| StoreInterface* storage = profile->GetStorage(); |
| bool is_default_profile = profile->IsDefault(); |
| if (WiFiService::FixupServiceEntries(storage)) { |
| storage->Flush(); |
| Metrics::ServiceFixupProfileType profile_type = |
| is_default_profile ? |
| Metrics::kMetricServiceFixupDefaultProfile : |
| Metrics::kMetricServiceFixupUserProfile; |
| metrics_->SendEnumToUMA( |
| metrics_->GetFullMetricName(Metrics::kMetricServiceFixupEntriesSuffix, |
| Technology::kWifi), |
| profile_type, |
| Metrics::kMetricServiceFixupMax); |
| } |
| // TODO(wdg): Determine how this should be structured for, currently |
| // non-existant, autotests. |kStorageFrequencies| should only exist in the |
| // default profile except for autotests where a test_profile is pushed. This |
| // may need to be modified for that case. |
| if (is_default_profile) { |
| static_assert(kMaxStorageFrequencies > kWeeksToKeepFrequencyCounts, |
| "Persistently storing more frequencies than we can hold"); |
| total_frequency_connections_ = 0L; |
| connect_count_by_frequency_.clear(); |
| time_t this_week = time_->GetSecondsSinceEpoch() / kSecondsPerWeek; |
| for (int freq = 0; freq < kMaxStorageFrequencies; ++freq) { |
| ConnectFrequencyMap connect_count_by_frequency; |
| string freq_string = StringPrintf("%s%d", kStorageFrequencies, freq); |
| vector<string> frequencies; |
| if (!storage->GetStringList(kStorageId, freq_string, &frequencies)) { |
| SLOG(this, 7) << "Frequency list " << freq_string << " not found"; |
| break; |
| } |
| time_t start_week = StringListToFrequencyMap(frequencies, |
| &connect_count_by_frequency); |
| if (start_week == kIllegalStartWeek) { |
| continue; // |StringListToFrequencyMap| will have output an error msg. |
| } |
| |
| if (start_week > this_week) { |
| LOG(WARNING) << "Discarding frequency count info from the future"; |
| continue; |
| } |
| connect_count_by_frequency_dated_[start_week] = |
| connect_count_by_frequency; |
| |
| for (const auto& freq_count : |
| connect_count_by_frequency_dated_[start_week]) { |
| connect_count_by_frequency_[freq_count.first] += freq_count.second; |
| total_frequency_connections_ += freq_count.second; |
| } |
| } |
| SLOG(this, 7) << __func__ << " - total count=" |
| << total_frequency_connections_; |
| } |
| } |
| |
| bool WiFiProvider::Save(StoreInterface* storage) const { |
| int freq = 0; |
| // Iterating backwards since I want to make sure that I get the newest data. |
| ConnectFrequencyMapDated::const_reverse_iterator freq_count; |
| for (freq_count = connect_count_by_frequency_dated_.crbegin(); |
| freq_count != connect_count_by_frequency_dated_.crend(); |
| ++freq_count) { |
| vector<string> frequencies; |
| FrequencyMapToStringList(freq_count->first, freq_count->second, |
| &frequencies); |
| string freq_string = StringPrintf("%s%d", kStorageFrequencies, freq); |
| storage->SetStringList(kStorageId, freq_string, frequencies); |
| if (++freq >= kMaxStorageFrequencies) { |
| LOG(WARNING) << "Internal frequency count list has more entries than the " |
| << "string list we had allocated for it."; |
| break; |
| } |
| } |
| return true; |
| } |
| |
| WiFiServiceRefPtr WiFiProvider::AddService(const vector<uint8_t>& ssid, |
| const string& mode, |
| const string& security, |
| bool is_hidden) { |
| WiFiServiceRefPtr service = new WiFiService(control_interface_, |
| dispatcher_, |
| metrics_, |
| manager_, |
| this, |
| ssid, |
| mode, |
| security, |
| is_hidden); |
| |
| services_.push_back(service); |
| manager_->RegisterService(service); |
| return service; |
| } |
| |
| WiFiServiceRefPtr WiFiProvider::FindService(const vector<uint8_t>& ssid, |
| const string& mode, |
| const string& security) const { |
| for (const auto& service : services_) { |
| if (service->ssid() == ssid && service->mode() == mode && |
| service->IsSecurityMatch(security)) { |
| return service; |
| } |
| } |
| return nullptr; |
| } |
| |
| ByteArrays WiFiProvider::GetHiddenSSIDList() { |
| // Create a unique set of hidden SSIDs. |
| set<ByteArray> hidden_ssids_set; |
| for (const auto& service : services_) { |
| if (service->hidden_ssid() && service->IsRemembered()) { |
| hidden_ssids_set.insert(service->ssid()); |
| } |
| } |
| SLOG(this, 2) << "Found " << hidden_ssids_set.size() << " hidden services"; |
| return ByteArrays(hidden_ssids_set.begin(), hidden_ssids_set.end()); |
| } |
| |
| void WiFiProvider::ForgetService(const WiFiServiceRefPtr& service) { |
| vector<WiFiServiceRefPtr>::iterator it; |
| it = std::find(services_.begin(), services_.end(), service); |
| if (it == services_.end()) { |
| return; |
| } |
| (*it)->ResetWiFi(); |
| services_.erase(it); |
| } |
| |
| void WiFiProvider::ReportRememberedNetworkCount() { |
| metrics_->SendToUMA( |
| Metrics::kMetricRememberedWiFiNetworkCount, |
| std::count_if( |
| services_.begin(), services_.end(), |
| [](ServiceRefPtr s) { return s->IsRemembered(); }), |
| Metrics::kMetricRememberedWiFiNetworkCountMin, |
| Metrics::kMetricRememberedWiFiNetworkCountMax, |
| Metrics::kMetricRememberedWiFiNetworkCountNumBuckets); |
| } |
| |
| void WiFiProvider::ReportServiceSourceMetrics() { |
| for (const auto& security_mode : |
| {kSecurityNone, kSecurityWep, kSecurityPsk, kSecurity8021x}) { |
| metrics_->SendToUMA( |
| base::StringPrintf( |
| Metrics:: |
| kMetricRememberedSystemWiFiNetworkCountBySecurityModeFormat, |
| security_mode), |
| std::count_if( |
| services_.begin(), services_.end(), |
| [security_mode](WiFiServiceRefPtr s) { |
| return s->IsRemembered() && s->IsSecurityMatch(security_mode) && |
| s->profile()->IsDefault(); |
| }), |
| Metrics::kMetricRememberedWiFiNetworkCountMin, |
| Metrics::kMetricRememberedWiFiNetworkCountMax, |
| Metrics::kMetricRememberedWiFiNetworkCountNumBuckets); |
| metrics_->SendToUMA( |
| base::StringPrintf( |
| Metrics:: |
| kMetricRememberedUserWiFiNetworkCountBySecurityModeFormat, |
| security_mode), |
| std::count_if( |
| services_.begin(), services_.end(), |
| [security_mode](WiFiServiceRefPtr s) { |
| return s->IsRemembered() && s->IsSecurityMatch(security_mode) && |
| !s->profile()->IsDefault(); |
| }), |
| Metrics::kMetricRememberedWiFiNetworkCountMin, |
| Metrics::kMetricRememberedWiFiNetworkCountMax, |
| Metrics::kMetricRememberedWiFiNetworkCountNumBuckets); |
| } |
| } |
| |
| // static |
| bool WiFiProvider::GetServiceParametersFromArgs(const KeyValueStore& args, |
| vector<uint8_t>* ssid_bytes, |
| string* mode, |
| string* security_method, |
| bool* hidden_ssid, |
| Error* error) { |
| CHECK_EQ(args.LookupString(kTypeProperty, ""), kTypeWifi); |
| |
| string mode_test = |
| args.LookupString(kModeProperty, kModeManaged); |
| if (!WiFiService::IsValidMode(mode_test)) { |
| Error::PopulateAndLog(FROM_HERE, error, Error::kNotSupported, |
| kManagerErrorUnsupportedServiceMode); |
| return false; |
| } |
| |
| vector<uint8_t> ssid; |
| if (args.ContainsString(kWifiHexSsid)) { |
| string ssid_hex_string = args.GetString(kWifiHexSsid); |
| if (!base::HexStringToBytes(ssid_hex_string, &ssid)) { |
| Error::PopulateAndLog(FROM_HERE, error, Error::kInvalidArguments, |
| "Hex SSID parameter is not valid"); |
| return false; |
| } |
| } else if (args.ContainsString(kSSIDProperty)) { |
| string ssid_string = args.GetString(kSSIDProperty); |
| ssid = vector<uint8_t>(ssid_string.begin(), ssid_string.end()); |
| } else { |
| Error::PopulateAndLog(FROM_HERE, error, Error::kInvalidArguments, |
| kManagerErrorSSIDRequired); |
| return false; |
| } |
| |
| if (ssid.size() < 1) { |
| Error::PopulateAndLog(FROM_HERE, error, Error::kInvalidNetworkName, |
| kManagerErrorSSIDTooShort); |
| return false; |
| } |
| |
| if (ssid.size() > IEEE_80211::kMaxSSIDLen) { |
| Error::PopulateAndLog(FROM_HERE, error, Error::kInvalidNetworkName, |
| kManagerErrorSSIDTooLong); |
| return false; |
| } |
| |
| const string kDefaultSecurity = kSecurityNone; |
| if (args.ContainsString(kSecurityProperty) && |
| args.ContainsString(kSecurityClassProperty) && |
| args.LookupString(kSecurityClassProperty, kDefaultSecurity) != |
| args.LookupString(kSecurityProperty, kDefaultSecurity)) { |
| Error::PopulateAndLog(FROM_HERE, error, Error::kInvalidArguments, |
| kManagerErrorArgumentConflict); |
| return false; |
| } |
| if (args.ContainsString(kSecurityClassProperty)) { |
| string security_class_test = |
| args.LookupString(kSecurityClassProperty, kDefaultSecurity); |
| if (!WiFiService::IsValidSecurityClass(security_class_test)) { |
| Error::PopulateAndLog(FROM_HERE, error, Error::kNotSupported, |
| kManagerErrorUnsupportedSecurityClass); |
| return false; |
| } |
| *security_method = security_class_test; |
| } else if (args.ContainsString(kSecurityProperty)) { |
| string security_method_test = |
| args.LookupString(kSecurityProperty, kDefaultSecurity); |
| if (!WiFiService::IsValidSecurityMethod(security_method_test)) { |
| Error::PopulateAndLog(FROM_HERE, error, Error::kNotSupported, |
| kManagerErrorUnsupportedSecurityMode); |
| return false; |
| } |
| *security_method = security_method_test; |
| } else { |
| *security_method = kDefaultSecurity; |
| } |
| |
| *ssid_bytes = ssid; |
| *mode = mode_test; |
| |
| // If the caller hasn't specified otherwise, we assume it is a hidden service. |
| *hidden_ssid = args.LookupBool(kWifiHiddenSsid, true); |
| |
| return true; |
| } |
| |
| // static |
| bool WiFiProvider::GetServiceParametersFromStorage( |
| const StoreInterface* storage, |
| const std::string& entry_name, |
| std::vector<uint8_t>* ssid_bytes, |
| std::string* mode, |
| std::string* security, |
| bool* hidden_ssid, |
| Error* error) { |
| // Verify service type. |
| string type; |
| if (!storage->GetString(entry_name, WiFiService::kStorageType, &type) || |
| type != kTypeWifi) { |
| Error::PopulateAndLog(FROM_HERE, error, Error::kInvalidArguments, |
| "Unspecified or invalid network type"); |
| return false; |
| } |
| string ssid_hex; |
| if (!storage->GetString(entry_name, WiFiService::kStorageSSID, &ssid_hex) || |
| !base::HexStringToBytes(ssid_hex, ssid_bytes)) { |
| Error::PopulateAndLog(FROM_HERE, error, Error::kInvalidArguments, |
| "Unspecified or invalid SSID"); |
| return false; |
| } |
| if (!storage->GetString(entry_name, WiFiService::kStorageMode, mode) || |
| mode->empty()) { |
| Error::PopulateAndLog(FROM_HERE, error, Error::kInvalidArguments, |
| "Network mode not specified"); |
| return false; |
| } |
| if (!storage->GetString(entry_name, WiFiService::kStorageSecurity, security) |
| || !WiFiService::IsValidSecurityMethod(*security)) { |
| Error::PopulateAndLog(FROM_HERE, error, Error::kInvalidArguments, |
| "Unspecified or invalid security mode"); |
| return false; |
| } |
| if (!storage->GetBool( |
| entry_name, WiFiService::kStorageHiddenSSID, hidden_ssid)) { |
| Error::PopulateAndLog(FROM_HERE, error, Error::kInvalidArguments, |
| "Hidden SSID not specified"); |
| return false; |
| } |
| return true; |
| } |
| |
| // static |
| time_t WiFiProvider::StringListToFrequencyMap(const vector<string>& strings, |
| ConnectFrequencyMap* numbers) { |
| if (!numbers) { |
| LOG(ERROR) << "Null |numbers| parameter"; |
| return kIllegalStartWeek; |
| } |
| |
| // Extract the start week from the first string. |
| vector<string>::const_iterator strings_it = strings.begin(); |
| if (strings_it == strings.end()) { |
| SLOG(nullptr, 7) << "Empty |strings|."; |
| return kIllegalStartWeek; |
| } |
| time_t start_week = GetStringListStartWeek(*strings_it); |
| if (start_week == kIllegalStartWeek) { |
| return kIllegalStartWeek; |
| } |
| |
| // Extract the frequency:count values from the remaining strings. |
| for (++strings_it; strings_it != strings.end(); ++strings_it) { |
| ParseStringListFreqCount(*strings_it, numbers); |
| } |
| return start_week; |
| } |
| |
| // static |
| time_t WiFiProvider::GetStringListStartWeek(const string& week_string) { |
| if (!base::StartsWith(week_string, kStartWeekHeader, |
| base::CompareCase::INSENSITIVE_ASCII)) { |
| LOG(ERROR) << "Found no leading '" << kStartWeekHeader << "' in '" |
| << week_string << "'"; |
| return kIllegalStartWeek; |
| } |
| return atoll(week_string.c_str() + 1); |
| } |
| |
| // static |
| void WiFiProvider::ParseStringListFreqCount(const string& freq_count_string, |
| ConnectFrequencyMap* numbers) { |
| vector<string> freq_count = SplitString( |
| freq_count_string, std::string{kFrequencyDelimiter}, |
| base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL); |
| if (freq_count.size() != 2) { |
| LOG(WARNING) << "Found " << freq_count.size() - 1 << " '" |
| << kFrequencyDelimiter << "' in '" << freq_count_string |
| << "'. Expected 1."; |
| return; |
| } |
| uint16_t freq = atoi(freq_count[0].c_str()); |
| uint64_t connections = atoll(freq_count[1].c_str()); |
| (*numbers)[freq] = connections; |
| } |
| |
| // static |
| void WiFiProvider::FrequencyMapToStringList(time_t start_week, |
| const ConnectFrequencyMap& numbers, |
| vector<string>* strings) { |
| if (!strings) { |
| LOG(ERROR) << "Null |strings| parameter"; |
| return; |
| } |
| |
| strings->push_back(StringPrintf("%s%" PRIu64, kStartWeekHeader, |
| static_cast<uint64_t>(start_week))); |
| |
| for (const auto& freq_conn : numbers) { |
| // Use base::Int64ToString() instead of using something like "%llu" |
| // (not correct for native 64 bit architectures) or PRId64 (does not |
| // work correctly using cros_workon_make due to include intricacies). |
| strings->push_back(StringPrintf("%u%c%s", |
| freq_conn.first, kFrequencyDelimiter, |
| base::Int64ToString(freq_conn.second).c_str())); |
| } |
| } |
| |
| void WiFiProvider::IncrementConnectCount(uint16_t frequency_mhz) { |
| CHECK(total_frequency_connections_ < std::numeric_limits<int64_t>::max()); |
| |
| ++connect_count_by_frequency_[frequency_mhz]; |
| ++total_frequency_connections_; |
| |
| time_t this_week = time_->GetSecondsSinceEpoch() / kSecondsPerWeek; |
| ++connect_count_by_frequency_dated_[this_week][frequency_mhz]; |
| |
| ConnectFrequencyMapDated::iterator oldest = |
| connect_count_by_frequency_dated_.begin(); |
| time_t oldest_legal_week = this_week - kWeeksToKeepFrequencyCounts; |
| while (oldest->first < oldest_legal_week) { |
| SLOG(this, 6) << "Discarding frequency count info that's " |
| << this_week - oldest->first << " weeks old"; |
| for (const auto& freq_count : oldest->second) { |
| connect_count_by_frequency_[freq_count.first] -= freq_count.second; |
| if (connect_count_by_frequency_[freq_count.first] <= 0) { |
| connect_count_by_frequency_.erase(freq_count.first); |
| } |
| total_frequency_connections_ -= freq_count.second; |
| } |
| connect_count_by_frequency_dated_.erase(oldest); |
| oldest = connect_count_by_frequency_dated_.begin(); |
| } |
| |
| manager_->UpdateWiFiProvider(); |
| metrics_->SendToUMA( |
| Metrics::kMetricFrequenciesConnectedEver, |
| connect_count_by_frequency_.size(), |
| Metrics::kMetricFrequenciesConnectedMin, |
| Metrics::kMetricFrequenciesConnectedMax, |
| Metrics::kMetricFrequenciesConnectedNumBuckets); |
| } |
| |
| WiFiProvider::FrequencyCountList WiFiProvider::GetScanFrequencies() const { |
| FrequencyCountList freq_connects_list; |
| for (const auto freq_count : connect_count_by_frequency_) { |
| freq_connects_list.push_back(FrequencyCount(freq_count.first, |
| freq_count.second)); |
| } |
| return freq_connects_list; |
| } |
| |
| void WiFiProvider::ReportAutoConnectableServices() { |
| int num_services = NumAutoConnectableServices(); |
| // Only report stats when there are wifi services available. |
| if (num_services) { |
| metrics_->NotifyWifiAutoConnectableServices(num_services); |
| } |
| } |
| |
| int WiFiProvider::NumAutoConnectableServices() { |
| const char* reason = nullptr; |
| int num_services = 0; |
| // Determine the number of services available for auto-connect. |
| for (const auto& service : services_) { |
| // Service is available for auto connect if it is configured for auto |
| // connect, and is auto-connectable. |
| if (service->auto_connect() && service->IsAutoConnectable(&reason)) { |
| num_services++; |
| } |
| } |
| return num_services; |
| } |
| |
| vector<ByteString> WiFiProvider::GetSsidsConfiguredForAutoConnect() { |
| vector<ByteString> results; |
| for (const auto& service : services_) { |
| if (service->auto_connect()) { |
| // Service configured for auto-connect. |
| ByteString ssid_bytes(service->ssid()); |
| results.push_back(ssid_bytes); |
| } |
| } |
| return results; |
| } |
| |
| } // namespace shill |