1 files changed, 110 insertions, 0 deletions
diff --git a/src/devreader-linux-sys.cpp b/src/devreader-linux-sys.cpp
new file mode 100644
index 0000000..2fc81fe
--- /dev/null
+++ b/src/devreader-linux-sys.cpp
@@ -0,0 +1,110 @@
+/***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   * 
+ *                                                                         *
+ ***************************************************************************/
+
+#include "devreader-linux-sys.h"
+
+#include <fstream>
+#include <string>
+#include <list>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+using namespace std;
+
+DevReaderLinuxSys::DevReaderLinuxSys(const string& deviceName)
+    : DevReader(deviceName)
+{
+}
+
+DevReaderLinuxSys::~DevReaderLinuxSys()
+{
+}
+
+bool DevReaderLinuxSys::isAvailable()
+{
+    struct stat sysStat;
+    if(stat("/sys/class/net", &sysStat) < 0 || ! S_ISDIR(sysStat.st_mode))
+        return false;
+
+    return true;
+}
+
+list<string> DevReaderLinuxSys::findAllDevices()
+{
+    list<string> interfaceNames;
+    DIR* sysDir = opendir("/sys/class/net");
+    struct dirent* sysDirEntry = 0;
+
+    if(!sysDir)
+        return interfaceNames;
+
+    while((sysDirEntry = readdir(sysDir)))
+    {
+        string interfaceName(sysDirEntry->d_name);
+        
+        if(interfaceName[0] == '.')
+            continue;
+                
+        interfaceNames.push_back(interfaceName);
+    }
+
+    closedir(sysDir);
+
+    return interfaceNames;
+}
+
+void DevReaderLinuxSys::readFromDevice(DataFrame& dataFrame)
+{
+    string devPath = "/sys/class/net/";
+    devPath += m_deviceName;
+    
+    struct stat sysStat;
+    if(stat(devPath.c_str(), &sysStat) < 0 || ! S_ISDIR(sysStat.st_mode))
+        return;
+
+    dataFrame.setTotalDataIn(readULongSysEntry("statistics/rx_bytes"));
+    dataFrame.setTotalDataOut(readULongSysEntry("statistics/tx_bytes"));
+
+    dataFrame.setTotalPacketsIn(readULongSysEntry("statistics/rx_packets"));
+    dataFrame.setTotalPacketsOut(readULongSysEntry("statistics/tx_packets"));
+
+    dataFrame.setTotalErrorsIn(readULongSysEntry("statistics/rx_errors"));
+    dataFrame.setTotalErrorsOut(readULongSysEntry("statistics/tx_errors"));
+    
+    dataFrame.setTotalDropsIn(readULongSysEntry("statistics/rx_dropped"));
+    dataFrame.setTotalDropsOut(readULongSysEntry("statistics/tx_dropped"));
+    
+    dataFrame.setValid(true);
+}
+
+unsigned long long DevReaderLinuxSys::readULongSysEntry(const string& entry)
+{
+    string sysEntryPath = "/sys/class/net/";
+    sysEntryPath += m_deviceName;
+    sysEntryPath += '/';
+    sysEntryPath += entry;
+    
+    ifstream sysEntry(sysEntryPath.c_str());
+    if(!sysEntry.is_open())
+        return 0;
+
+    unsigned long long num = 0;
+    sysEntry >> num;
+    if(sysEntry.fail())
+        return 0;
+
+    return num;
+}
+
+