DHCP client betiği

betikler/dhcpcd.py

+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+import popen2
+from glob import glob
+
+class dhcpc:
+    def _run(self, args):
+        cmd = "/sbin/dhcpcd " + args
+        a = popen2.Popen4(cmd)
+
+        return a.wait() 
+
+    def start(self, ifname, timeout = "30"):
+        """ Start the DHCP client daemon """
+        # Maybe we should leave this to GUI
+        if ifname in self.getRunning():
+            self.stop(ifname)
+
+        # -R -Y -N to prevent dhcpcd rewrite nameservers
+        #          we should add nameservers, not rewrite them
+        # -H to set hostname due to info from server
+        # -t for timeout
+
+        args = "-R -Y -N -H -t " + timeout + " " + ifname
+        return self._run(args)
+
+    def stop(self, ifname):
+        """ Stop DHCP client daemon """
+        args = "-k " + ifname
+        return self._run(args)
+
+    def getNameServers(self, ifname):
+        """ Get DNS server list provided by the server """
+        info_file = "/var/lib/dhcpc/dhcpcd-" + ifname + ".info"
+
+        try:
+            f = file(info_file)
+            for line in f.readlines():
+                if not line.find("DNS="):
+                    return line[line.find("DNS=")+4:].rstrip('\n').split(',')
+            f.close
+        except IOError:
+            return "Could not open file" # FIXME: put an error message here
+
+    def getRunning(self):
+        d = []
+        for i in glob("/var/run/dhcpcd-*.pid"):
+            d.append(i.rstrip(".pid").lstrip("/var/run/dhcpcd-"))
+        return d
+
+if __name__ == "__main__":
+    dc = dhcpc()
+    print "Daemons are running for", "".join(dc.getRunning())
+