Client updater app

1 files changed, 73 insertions, 0 deletions

diff --git a/updater/main.cpp b/updater/main.cpp
new file mode 100644
index 0000000..e39a0b2
--- /dev/null
+++ b/updater/main.cpp
@@ -0,0 +1,73 @@
+
+#include <stdio.h>
+#ifdef WINDOWS
+    #include <direct.h>
+    #define GetCurrentDir   _getcwd
+    #define ClientName      "client.exe"
+#else
+    #include <unistd.h>
+    #define GetCurrentDir   getcwd
+    #define ClientName      "client"
+#endif
+#include <errno.h>
+#include <QFileInfo>
+#include <QProcess>
+#include <QString>
+#include "Logger.h"
+
+
+int main()
+{
+	Logger::Info("Starting updater application\n");
+	char currentPath[FILENAME_MAX];
+	if (! GetCurrentDir(currentPath, sizeof(currentPath)))
+    {
+		return errno;
+    }
+    // check if whether client.bin.latest exists
+	// it shoultd be renamed to client.exe (on Windows) ot just client (on Linux)
+	QString cwd(currentPath);
+	QFileInfo binInfo(cwd + "/client.bin.latest");
+	if (! binInfo.exists())
+	{
+		Logger::Fatal("New client version not present.\n");
+		Logger::Fatal("Terminating.\n");
+		return -1;
+	}
+
+    // remove old client binary
+    QFile client(cwd + "/" + ClientName);
+    if (client.exists())
+    {
+        Logger::Trace("Removing old client executable\n");
+        if (! client.remove())
+        {
+            Logger::Fatal("Can't remove %s\n", client.fileName().toStdString().c_str());
+            return -1;
+        }
+    }
+    else
+    {
+        Logger::Warn("Client executable is absent\n");
+    }
+
+    if (QFile::rename(cwd + "/client.bin.latest", cwd + "/" + ClientName))
+    {
+        Logger::Info("Client successfully updated\n");
+    }
+    else
+    {
+        Logger::Fatal("Can't rename 'client.bin.latest'\n");
+        return -1;
+    }
+
+    // starting client process
+    QString program(cwd + "/" + ClientName);
+    if (! QProcess::startDetached(program))
+    {
+        Logger::Fatal("Failed to start client application\n");
+        return -1;
+    }
+
+    return 0;
+}