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'''network related functions, mostly for discovery'''
import socket
import nmap
def localip(dns):
'''todo: why needs dns to find out local ip?'''
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.connect((dns, 80))
locip = sock.getsockname()[0]
sock.close()
return locip
def networkmap(dns, api_port, ssh_port):
'''see if scanning for ssh port is really necessary'''
locip = localip(dns)
print('Your ip is {0}'.format(locip))
#scan can take a minute
#-n/-R: Never do DNS resolution/Always resolve [default: sometimes]
#-sL: List Scan - simply list targets to scan
#-sP <hosts>: only does discovery
#-PS: Port scan during discovery
scanarguments = '-v -sV' #faster but lists hosts that are not miners
print("mapping network with arguments '{0}'".format(scanarguments))
netmapper = nmap.PortScanner()
netmapper.scan(hosts=locip+'/24', ports='{0},{1}'.format(api_port, ssh_port), arguments=scanarguments, sudo=False)
hosts_list = [(h, netmapper[h]['status']['state'], netmapper[h]['vendor']) for h in netmapper.all_hosts()]
return hosts_list
dfoderick /
fullcycle
