Source Code for Module roswtf.network

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 33  # Revision $Id: environment.py 4428 2009-05-05 05:48:36Z jfaustwg $ 
 34   
 35  import os 
 36  import socket 
 37  import stat 
 38  import string 
 39  import sys 
 40   
 41  import rosgraph 
 42  import rosgraph.network 
 43   
 44  from roswtf.rules import warning_rule, error_rule 
 45   
 46  # #1220 
 47 -def ip_check(ctx): 
 48      # best we can do is compare roslib's routine against socket resolution and make sure they agree 
 49      local_addrs = rosgraph.network.get_local_addresses() 
 50   
 51      resolved_ips = [host[4][0] for host in socket.getaddrinfo(socket.gethostname(), 0, 0, 0, socket.SOL_TCP)] 
 52      global_ips = [ ip for ip in resolved_ips if not ip.startswith('127.') and not ip == '::1'] 
 53   
 54      remote_ips = list(set(global_ips) - set(local_addrs)) 
 55      if remote_ips: 
 56          return "Local hostname [%s] resolves to [%s], which does not appear to be a local IP address %s."%(socket.gethostname(), ','.join(remote_ips), str(local_addrs)) 
 57   
 58  # suggestion by mquigley based on laptop dhcp issues     
 59 -def ros_hostname_check(ctx): 
 60      """Make sure that ROS_HOSTNAME resolves to a local IP address""" 
 61      if not rosgraph.ROS_HOSTNAME in ctx.env: 
 62          return 
 63   
 64      hostname = ctx.env[rosgraph.ROS_HOSTNAME] 
 65      try: 
 66          resolved_ips = [host[4][0] for host in socket.getaddrinfo(hostname, 0, 0, 0, socket.SOL_TCP)] 
 67      except socket.gaierror: 
 68          return "ROS_HOSTNAME [%s] cannot be resolved to an IP address"%(hostname) 
 69       
 70      # best we can do is compare roslib's routine against socket resolution and make sure they agree 
 71      local_addrs = rosgraph.network.get_local_addresses() 
 72   
 73      remote_ips = list(set(resolved_ips) - set(local_addrs)) 
 74      if remote_ips: 
 75          return "ROS_HOSTNAME [%s] resolves to [%s], which does not appear to be a local IP address %s."%(hostname, ','.join(remote_ips), str(local_addrs)) 
 76   
 77 -def ros_ip_check(ctx): 
 78      """Make sure that ROS_IP is a local IP address""" 
 79      if not rosgraph.ROS_IP in ctx.env: 
 80          return 
 81   
 82      ip = ctx.env[rosgraph.ROS_IP] 
 83       
 84      # best we can do is compare roslib's routine against socket resolution and make sure they agree 
 85      addrs = rosgraph.network.get_local_addresses() 
 86   
 87      if ip not in addrs: 
 88          return "ROS_IP [%s] does not appear to be a local IP address %s."%(ip, str(addrs)) 
 89       
 90  # Error/Warning Rules 
 91   
 92  warnings = [ 
 93      (ros_hostname_check, 
 94       "ROS_HOSTNAME may be incorrect: "), 
 95      (ros_ip_check, 
 96       "ROS_IP may be incorrect: "), 
 97   
 98      ] 
 99   
100  errors = [ 
101      (ip_check, 
102       "Local network configuration is invalid: "), 
103      ] 
104   
105 -def wtf_check(ctx): 
106      for r in warnings: 
107          warning_rule(r, r[0](ctx), ctx) 
108      for r in errors: 
109          error_rule(r, r[0](ctx), ctx) 
110