新增秘钥生成器+程序守护进程

key/keydemo/appkey.cpp

@@ -0,0 +1,122 @@
+#include "appkey.h"
+#include "qmutex.h"
+#include "qfile.h"
+#include "qtimer.h"
+#include "qdatetime.h"
+#include "qapplication.h"
+#include "qmessagebox.h"
+
+AppKey *AppKey::self = NULL;
+AppKey *AppKey::Instance()
+{
+    if (!self) {
+        QMutex mutex;
+        QMutexLocker locker(&mutex);
+        if (!self) {
+            self = new AppKey;
+        }
+    }
+
+    return self;
+}
+
+AppKey::AppKey(QObject *parent) : QObject(parent)
+{
+    keyData = "";
+    keyUseDate = false;
+    keyDate = "2017-01-01";
+    keyUseRun = false;
+    keyRun = 1;
+    keyUseCount = false;
+    keyCount = 10;
+
+    timer = new QTimer(this);
+    timer->setInterval(1000);
+    connect(timer, SIGNAL(timeout()), this, SLOT(checkTime()));
+    startTime = QDateTime::currentDateTime();
+}
+
+void AppKey::start()
+{
+    //判断密钥文件是否存在,不存在则从资源文件复制出来,同时需要设置文件写权限
+    QString keyName = qApp->applicationDirPath() + "/key.db";
+    QFile keyFile(keyName);
+    if (!keyFile.exists() || keyFile.size() == 0) {
+        QMessageBox::critical(0, "错误", "密钥文件丢失,请联系供应商!");
+        exit(0);
+    }
+
+    //读取密钥文件
+    keyFile.open(QFile::ReadOnly);
+    keyData = keyFile.readLine();
+    keyFile.close();
+
+    //将从注册码文件中的密文解密,与当前时间比较是否到期
+    keyData = getXorEncryptDecrypt(keyData, 110);
+    QStringList data = keyData.split("|");
+
+    if (data.count() != 6) {
+        QMessageBox::critical(0, "错误", "注册码文件已损坏,程序将自动关闭!");
+        exit(0);
+    }
+
+    keyUseDate = (data.at(0) == "1");
+    keyDate = data.at(1);
+    keyUseRun = (data.at(2) == "1");
+    keyRun = data.at(3).toInt();
+    keyUseCount = (data.at(4) == "1");
+    keyCount = data.at(5).toInt();
+
+    //如果启用了时间限制
+    if (keyUseDate) {
+        QString nowDate = QDate::currentDate().toString("yyyy-MM-dd");
+        if (nowDate > keyDate) {
+            QMessageBox::critical(0, "错误", "软件已到期,请联系供应商更新注册码!");
+            exit(0);
+        }
+    }
+
+    //如果启用了运行时间显示
+    if (keyUseRun) {
+        timer->start();
+    }
+}
+
+void AppKey::stop()
+{
+    timer->stop();
+}
+
+void AppKey::checkTime()
+{
+    //找出当前时间与首次启动时间比较
+    QDateTime now = QDateTime::currentDateTime();
+    if (startTime.secsTo(now) >= (keyRun * 60)) {
+        QMessageBox::critical(0, "错误", "试运行时间已到,请联系供应商更新注册码!");
+        exit(0);
+    }
+}
+
+QString AppKey::getXorEncryptDecrypt(const QString &data, char key)
+{
+    //采用异或加密,也可以自行更改算法
+    QByteArray buffer = data.toLatin1();
+    int size = buffer.size();
+    for (int i = 0; i < size; i++) {
+        buffer[i] = buffer.at(i) ^ key;
+    }
+
+    return QLatin1String(buffer);
+}
+
+bool AppKey::checkCount(int count)
+{
+    if (keyUseCount) {
+        if (count >= keyCount) {
+            QMessageBox::critical(0, "错误", "设备数量超过限制,请联系供应商更新注册码!");
+            return false;
+        }
+    }
+
+    return true;
+}