def must_parse_net_arg(arg):
"Helper for parsing net args"
if ":" not in arg:
report.die("No bridge interface supplied")
br_conf, _colon, addrs_str = arg.partition(":")
if "/" in br_conf:
br_dev, _slash, hwaddr = br_conf.partition("/")
hwaddr = hwaddr.replace(".", "").lower()
if len(hwaddr) > 12:
report.die("Hardware address is too long (must be 12 hex digits)")
elif len(hwaddr) < 12:
report.die("Hardware address is too short (must be 12 hex digits)")
else:
for idx, char in enumerate(hwaddr):
if not ("0" <= char <= "9" or "a" <= char <= "f"):
report.die(("Invalid character in hardware address "
"at position %d (only hex digits allowed)") % idx)
else:
br_dev = br_conf
hwaddr = None
if not os.path.exists(os.path.join("/sys/class/net/", br_dev)):
report.die("No such device: %s" % br_dev)
addrs = addrs_str.split(",")
if not addrs:
report.die("At least one address should be used (bridge %s)" % br_dev)
ips = []
for addr in addrs:
if "/" not in addr:
report.die("No netmask supplied for address %s" % addr)
ip, mask = addr.split("/")
try:
addrpool.parse_address(ip)
except:
report.die("Invalid ip address: %s" % ip)
try:
int(mask)
except:
report.die("Invalid mask: %s" % mask)
if not (32 >= int(mask) > 0):
report.die("Mask is out of range: %s" % mask)
ips.append((ip, mask))
return br_dev, hwaddr, ips
def must_gen_net(net, count):
"Generate addresses and hwaddr for network"
raw_addresses = net["pool"].alloc_addresses(count)
if raw_addresses is None:
report.die("Not enough free addresses")
# FIXME: ip address datatype - string or tuple or smth else?
raw_mac = (02, random.randint(1, 255)) + addrpool.parse_address(raw_addresses[0])
mac = ":".join("%x" % digit for digit in raw_mac)
addresses = [(addr, "24") for addr in raw_addresses] # FIXME: hardcoded netmask!
return mac, addresses
