network: add network model

Add the top-level network model. Supports connect, disconnect,
power, and input invokables. Supports high-level WiFi enabled (powered)
and connection status properties. Exposes the ConnMan-managed WiFi
network list to QML.

Bug-AGL: SPEC-1541

Change-Id: I623579aa6753ece4b4c0b78adef528732e1b41f3
Signed-off-by: Matt Porter <mporter@konsulko.com>

1 files changed, 324 insertions, 0 deletions

diff --git a/network/network.cpp b/network/network.cpp
new file mode 100644
index 0000000..d2a00ff
--- /dev/null
+++ b/network/network.cpp
@@ -0,0 +1,324 @@
+/*
+ * Copyright (C) 2018 Konsulko Group
+ *
+ * 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 <QMetaEnum>
+#include <QtQml/QQmlEngine>
+
+#include <vcard/vcard.h>
+
+#include "message.h"
+#include "messageengine.h"
+#include "network.h"
+#include "networkmessage.h"
+#include "responsemessage.h"
+#include "wifinetworkmodel.h"
+
+Network::Network (QUrl &url, QQmlContext *context, QObject * parent) :
+    QObject(parent),
+    m_mloop(nullptr),
+    m_wifi(nullptr),
+    m_wifiConnected(false),
+    m_wifiEnabled(false)
+{
+    m_mloop = new MessageEngine(url);
+    m_wifi = new WifiNetworkModel();
+
+    context->setContextProperty("WifiNetworkModel", m_wifi);
+
+    QObject::connect(m_mloop, &MessageEngine::connected, this, &Network::onConnected);
+    QObject::connect(m_mloop, &MessageEngine::disconnected, this, &Network::onDisconnected);
+    QObject::connect(m_mloop, &MessageEngine::messageReceived, this, &Network::onMessageReceived);
+}
+
+Network::~Network()
+{
+    delete m_mloop;
+    delete m_wifi;
+}
+
+void Network::connect(QString service)
+{
+    NetworkMessage *nmsg = new NetworkMessage();
+    QJsonObject parameter;
+
+    parameter.insert("service", service);
+
+    nmsg->createRequest("connect_service", parameter);
+    m_mloop->sendMessage(nmsg);
+    nmsg->deleteLater();
+}
+
+void Network::disconnect(QString service)
+{
+    NetworkMessage *nmsg = new NetworkMessage();
+    QJsonObject parameter;
+
+    parameter.insert("service", service);
+
+    nmsg->createRequest("disconnect_service", parameter);
+    m_mloop->sendMessage(nmsg);
+    nmsg->deleteLater();
+}
+
+void Network::input(int id, QString passphrase)
+{
+    NetworkMessage *nmsg = new NetworkMessage();
+    QJsonObject parameter, fields;
+
+    parameter.insert("id", id);
+    fields.insert("passphrase", passphrase);
+    parameter.insert("fields", fields);
+
+    nmsg->createRequest("agent_response", parameter);
+    m_mloop->sendMessage(nmsg);
+    nmsg->deleteLater();
+}
+
+void Network::power(bool on)
+{
+    if (on)
+        enableTechnology("wifi");
+    else
+        disableTechnology("wifi");
+}
+
+void Network::enableTechnology(QString type)
+{
+    NetworkMessage *nmsg = new NetworkMessage();
+    QJsonObject parameter;
+
+    parameter.insert("technology", type);
+    nmsg->createRequest("enable_technology", parameter);
+    m_mloop->sendMessage(nmsg);
+
+    nmsg->deleteLater();
+}
+
+void Network::disableTechnology(QString type)
+{
+    NetworkMessage *nmsg = new NetworkMessage();
+    QJsonObject parameter;
+
+    parameter.insert("technology", type);
+    nmsg->createRequest("disable_technology", parameter);
+    m_mloop->sendMessage(nmsg);
+
+    nmsg->deleteLater();
+}
+
+void Network::scanServices(QString type)
+{
+    NetworkMessage *nmsg = new NetworkMessage();
+    QJsonObject parameter;
+
+    parameter.insert("technology", type);
+    nmsg->createRequest("scan_services", parameter);
+    m_mloop->sendMessage(nmsg);
+
+    nmsg->deleteLater();
+}
+
+bool Network::addService(QJsonObject service)
+{
+        // Ignore services that are already added
+        QString id = service.value("service").toString();
+        if (m_wifi->getNetwork(id))
+            return false;
+
+        QJsonObject properties = service.value("properties").toObject();
+
+        // Ignore hidden SSIDs
+        QString ssid = properties.value("name").toString();
+        if (ssid == "")
+            return false;
+
+        // Ignore technologies other than WiFi
+        QString type = properties.value("type").toString();
+        if (type != "wifi")
+            return false;
+
+        // Initially support only IPv4 and the first security method found
+        QString address = properties.value("ipv4").toObject().value("address").toString();
+        QString security = properties.value("security").toArray().at(0).toString();
+        QString state = properties.value("state").toString();
+        int strength = properties.value("strength").toInt();
+
+        WifiNetwork *network = new WifiNetwork(address, security, id, ssid, state, strength);
+        m_wifi->addNetwork(network);
+
+        return true;
+}
+
+void Network::removeService(QJsonObject service)
+{
+    QString id = service.value("service").toString();
+    WifiNetwork *network = m_wifi->getNetwork(id);
+
+    if (network)
+        m_wifi->removeNetwork(network);
+}
+
+void Network::addServices(QJsonArray services)
+{
+    for (auto service : services)
+        addService(service.toObject());
+}
+
+void Network::getServices()
+{
+    NetworkMessage *nmsg = new NetworkMessage();
+    QJsonObject parameter;
+
+    nmsg->createRequest("services", parameter);
+    m_mloop->sendMessage(nmsg);
+    nmsg->deleteLater();
+}
+
+void Network::updateWifiStatus(QJsonObject properties)
+{
+    if (properties.contains("connected")) {
+        m_wifiConnected = properties.value("connected").toBool();
+        emit wifiConnectedChanged(m_wifiConnected);
+    }
+
+    if (properties.contains("powered")) {
+        m_wifiEnabled = properties.value("powered").toBool();
+        emit wifiEnabledChanged(m_wifiEnabled);
+        if (m_wifiEnabled)
+            getServices();
+    }
+}
+
+void Network::parseTechnologies(QJsonArray technologies)
+{
+    for (auto value : technologies) {
+        QJsonObject technology = value.toObject();
+        QJsonObject properties = technology.value("properties").toObject();
+        QString type = properties.value("type").toString();
+        if (type == "wifi") {
+            updateWifiStatus(properties);
+            if (m_wifiEnabled)
+                getServices();
+            break;
+        }
+    }
+}
+
+void Network::getTechnologies()
+{
+    NetworkMessage *nmsg = new NetworkMessage();
+    QJsonObject parameter;
+
+    nmsg->createRequest("technologies", parameter);
+    m_mloop->sendMessage(nmsg);
+    nmsg->deleteLater();
+}
+
+void Network::updateServiceProperties(QJsonObject data)
+{
+    QString service = data.value("service").toString();
+    QJsonObject properties = data.value("properties").toObject();
+    m_wifi->updateProperties(service, properties);
+}
+
+void Network::processEvent(NetworkMessage *nmsg)
+{
+    if (nmsg->eventName() == "agent") {
+        QJsonObject agent = nmsg->eventData();
+        QJsonObject fields = agent.value("fields").toObject();
+        QJsonObject passphrase = fields.value("passphrase").toObject();
+        QString type = passphrase.value("type").toString();
+        QString reqmt = passphrase.value("requirement").toString();
+        if (((type == "psk") || (type == "wep")) && (reqmt == "mandatory")) {
+            int id = agent.value("id").toInt();
+            emit inputRequest(id);
+        }
+    } else if (nmsg->eventName() == "services") {
+        QJsonArray services = nmsg->eventData().value("values").toArray();
+        for (auto value : services) {
+            QJsonObject service = value.toObject();
+            QString action = service.value("action").toString();
+            QString id = service.value("service").toString();
+            if (action == "changed") {
+                addService(service);
+            } else if (action == "removed") {
+                removeService(service);
+            }
+        }
+    } else if (nmsg->eventName() == "service_properties") {
+        updateServiceProperties(nmsg->eventData());
+    } else if (nmsg->eventName() == "technology_properties") {
+        QJsonObject technology = nmsg->eventData();
+        if (technology.value("technology").toString() == "wifi") {
+            QJsonObject properties = technology.value("properties").toObject();
+            updateWifiStatus(properties);
+        }
+    }
+}
+
+void Network::processReply(ResponseMessage *rmsg)
+{
+    if (rmsg->requestVerb() == "services") {
+        addServices(rmsg->replyData().value("values").toArray());
+    } else if (rmsg->requestVerb() == "technologies") {
+        parseTechnologies(rmsg->replyData().value("values").toArray());
+    }
+}
+
+void Network::onMessageReceived(MessageType type, Message *msg)
+{
+    if (msg->isEvent() && (type == NetworkEventMessage)) {
+        processEvent(qobject_cast<NetworkMessage*>(msg));
+    } else if (msg->isReply() && (type == ResponseRequestMessage)) {
+        processReply(qobject_cast<ResponseMessage*>(msg));
+    }
+
+    msg->deleteLater();
+}
+
+void Network::onConnected()
+{
+    QStringListIterator eventIterator(events);
+    NetworkMessage *nmsg;
+
+    while (eventIterator.hasNext()) {
+        nmsg = new NetworkMessage();
+        QJsonObject parameter;
+        parameter.insert("value", eventIterator.next());
+        nmsg->createRequest("subscribe", parameter);
+        m_mloop->sendMessage(nmsg);
+        nmsg->deleteLater();
+    }
+
+    getTechnologies();
+}
+
+void Network::onDisconnected()
+{
+    QStringListIterator eventIterator(events);
+    NetworkMessage *nmsg;
+
+    while (eventIterator.hasNext()) {
+        nmsg = new NetworkMessage();
+        QJsonObject parameter;
+        parameter.insert("value", eventIterator.next());
+        nmsg->createRequest("unsubscribe", parameter);
+        m_mloop->sendMessage(nmsg);
+        nmsg->deleteLater();
+    }
+
+    m_wifi->removeAllNetworks();
+}