source: lmd/trunk/fuentes/lmd-server.install/usr/share/n4d/python-plugins/LmdClientManager.py @ 3394

import json
import os


class LmdClientManager:
        
                
        def __init__(self):
                self.clientpath="/etc/ltsp/bootopts/clients/"
                
                pass
        #def __init__
        
        def getClientList(self):
                '''
                Reads the file list of clients from /etc/ltsp/bootopts/clients
                Returna a JSON List.
                '''
                
                clientlist=[]
                
                for i in os.listdir(self.clientpath):
                        if '.json' in i:
                                clientlist.append(str(i))
                                
                return json.dumps(clientlist)
                        
        

        def getClient(self, client):
                '''
                Returns the metadata from certain client
                '''
                try:
                        json_data=open(self.clientpath+client)
                        data = json.load(json_data)
                        json_data.close()
                        return json.dumps(data)
                        #return data;
                except Exception as e:
                        return {"status":False};

                
                
        def setClient(self, client, data):
                '''
                Saves metadata from *data to client
                data is unicoded string
                client is a mac
                '''
                client=client.replace(":", "")
                                
                path_to_write = os.path.join(self.clientpath,client + ".json")
                f = open(path_to_write,'w')
                f.writelines(data)
                f.close()
                
        
        def deleteClient(self, client):
                '''
                N4d Method to delete a client
                '''
                import shutil;
                
                try:
                        client=client.replace(":", "")
                        json_file = os.path.join("/etc/ltsp/bootopts/clients",client + ".json")
                                                
                        # Remove .json file
                        if (os.path.isfile(json_file)):
                                os.remove(json_file);
                        
                        return {"status":True, "msg":"Client Removed"}
                except Exception as e:
                        return {"status":False, "msg":str(e)}
                
        def getArpTable(self):
                
                f=open("/proc/net/arp")
                lines=f.readlines()
                f.close()
                
                arptable=[];

                iface=objects["VariablesManager"].get_variable("INTERNAL_INTERFACE")
                
                for line in lines:
                        macarray=re.sub(' +',' ',line).split(" ");
                        ip=macarray[0]
                        mac=macarray[3]
                        if (macarray[5].replace('\n', '')==iface):
                                print "adding"
                                arptable.append({"ip":ip, "mac":mac});
                        
                return arptable[0:];