From a15beba02f95e56d1fe50eaf13b59b95b23d0e2c Mon Sep 17 00:00:00 2001
From: Samuli Piippo <samuli.piippo@qt.io>
Date: Mon, 26 Oct 2020 09:25:26 +0200
Subject: startupscreen: show IP addresses

Fetch all IPv4 networks and show them to the user. Qt6 has removed
APIs for getting signals of network changes, need to poll the network
periodically.

Task-number: QTBUG-87028
Change-Id: I3953e5c6ecff7a463cb14354fd5302b04b554157
Reviewed-by: Rami Potinkara <rami.potinkara@qt.io>
---
 startupscreen/MainView.qml        | 11 +++++++++--
 startupscreen/settingsmanager.cpp | 27 +++++++++++++++++++++++++++
 startupscreen/settingsmanager.h   |  3 +++
 3 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/startupscreen/MainView.qml b/startupscreen/MainView.qml
index 4e0a234..fb79df3 100644
--- a/startupscreen/MainView.qml
+++ b/startupscreen/MainView.qml
@@ -200,7 +200,7 @@ Item {
     Text {
         id: ipLabel
         color: "grey"
-        text: "Network"
+        text: "Networks:"
         anchors.bottom: ipAddress.top
         anchors.horizontalCenter: ipAddress.horizontalCenter
         font.pixelSize: textNormal
@@ -209,13 +209,20 @@ Item {
     Text {
         id: ipAddress
         color: "grey"
-        text: "eth0: 255.255.255.255\nusb0: 0:0.0.0.0"
+        text: SettingsManager.networks
         anchors.bottom: root.bottom
         anchors.right: root.right
         anchors.rightMargin: 5
         font.pixelSize: textNormal
         font.bold: true
         font.family: "Titillium Web"
+
+        Timer {
+            interval: 3000
+            onTriggered: ipAddress.text = SettingsManager.networks
+            running: true
+            repeat: true
+        }
     }
 
     UsbModeDialog {
diff --git a/startupscreen/settingsmanager.cpp b/startupscreen/settingsmanager.cpp
index 4f5f217..0608f86 100644
--- a/startupscreen/settingsmanager.cpp
+++ b/startupscreen/settingsmanager.cpp
@@ -54,6 +54,7 @@
 #include <QDir>
 #include <QFile>
 #include <QTemporaryFile>
+#include <QNetworkInterface>
 
 #include <sys/reboot.h>
 #include <unistd.h>
@@ -124,3 +125,29 @@ void SettingsManager::reboot()
     ::reboot(RB_AUTOBOOT);
     qWarning("reboot failed");
 }
+
+QString SettingsManager::networks()
+{
+    QString networks;
+    networks.reserve(100);
+
+    const auto interfaceList = QNetworkInterface::allInterfaces();
+    for (const auto &interface : interfaceList) {
+        if (interface.name() == QLatin1String("lo"))
+            continue;
+
+        if (interface.flags().testFlag(QNetworkInterface::IsUp)) {
+            for (QNetworkAddressEntry &entry : interface.addressEntries()) {
+                if (entry.ip().protocol() == QAbstractSocket::IPv4Protocol) {
+                    if (!networks.isEmpty())
+                        networks += QLatin1String("\n");
+
+                    networks += interface.name();
+                    networks += QLatin1String(": ");
+                    networks += entry.ip().toString();
+                }
+            }
+        }
+    }
+    return networks;
+}
diff --git a/startupscreen/settingsmanager.h b/startupscreen/settingsmanager.h
index 1801812..fa6c066 100644
--- a/startupscreen/settingsmanager.h
+++ b/startupscreen/settingsmanager.h
@@ -60,6 +60,7 @@ class SettingsManager : public QObject
 
     Q_PROPERTY(QString usbMode READ usbMode WRITE setUsbMode)
     Q_PROPERTY(bool hasQdb READ hasQdb CONSTANT)
+    Q_PROPERTY(QString networks READ networks CONSTANT)
 
 public:
     explicit SettingsManager(QObject *parent = nullptr);
@@ -69,6 +70,8 @@ public:
     bool hasQdb();
     Q_INVOKABLE void reboot();
 
+    QString networks();
+
 private:
     QString m_usbMode;
 };
-- 
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