import subprocess

def netdev_info():
    fields = ( "hwaddr", "addr", "bcast", "mask" )
    ifcfg_out = subprocess.check_output(["ifconfig", "-a"])
    devs = { }
    for line in ifcfg_out.splitlines():
        if len(line) == 0:
            continue
        if line[0] not in ("\t", " "):
            curdev = line.split()[0]
            devs[curdev] = { "up": False }
            for field in fields:
                devs[curdev][field] = ""
        toks = line.lower().strip().split()
        if toks[0] == "up":
            devs[curdev]['up'] = True

        fieldpost = ""
        if toks[0] == "inet6":
            fieldpost = "6"

        for i in range(len(toks)):
            if toks[i] == "hwaddr":
                try:
                    devs[curdev]["hwaddr"] = toks[i+1]
                except IndexError as e:
                    pass
            for field in ("addr", "bcast", "mask"):
                target = "%s%s" % (field, fieldpost)
                if devs[curdev].get(target,""): 
                    continue
                if toks[i] == "%s:" % field:
                    try:
                        devs[curdev][target] = toks[i+1]
                    except IndexError as e:
                        pass
                elif toks[i].startswith("%s:" % field):
                    devs[curdev][target] = toks[i][len(field)+1:]
    return(devs)

def route_info():
    route_out = subprocess.check_output(["route", "-n"])
    routes = [ ]
    for line in route_out.splitlines()[1:]:
        if not line:
            continue
        toks = line.split()
        if toks[0] == "Kernel" or toks[0] == "Destination":
            continue
        routes.append(toks)
    return(routes)

def getgateway():
    for r in route_info():
        if r[3].find("G") >= 0:
            return("%s[%s]" % (r[1],r[7]))
    return(None)

def debug_info(pre="ci-info: "):
    lines = [ ]
    try:
        netdev = netdev_info()
    except Exception as e:
        lines.append("netdev_info failed!")
        netdev = {}
    for (dev, d) in netdev.iteritems():
        lines.append("%s%-6s: %i %-15s %-15s %s" %
            (pre, dev, d["up"], d["addr"],d["mask"], d["hwaddr"]))
    try:
        routes = route_info()
    except Exception as e:
        lines.append("route_info failed")
        routes = []
    n = 0
    for r in routes:
        lines.append("%sroute-%d: %-15s %-15s %-15s %-6s %s" %
            (pre, n, r[0], r[1], r[2], r[7], r[3]))
        n = n+1
    return('\n'.join(lines))

if __name__ == '__main__':
    print debug_info()