def choose_device(devices):
if not len(devices):
raise Exception("No KeepKey connected!")
if len(devices) == 1:
try:
return HidTransport(devices[0])
except IOError:
raise Exception("Device is currently in use")
i = 0
sys.stderr.write("----------------------------\n")
sys.stderr.write("Available devices:\n")
for d in devices:
try:
t = HidTransport(d)
except IOError:
sys.stderr.write("[-] <device is currently in use>\n")
continue
client = KeepKeyClient(t)
if client.features.label:
sys.stderr.write("[%d] %s\n" % (i, client.features.label))
else:
sys.stderr.write("[%d] <no label>\n" % i)
t.close()
i += 1
sys.stderr.write("----------------------------\n")
sys.stderr.write("Please choose device to use: ")
try:
device_id = int(raw_input())
return HidTransport(devices[device_id])
except:
raise Exception("Invalid choice, exiting...")