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|
#! /usr/bin/python
"""
hub_ctrl.py - a tool to control port power/led of USB hub
Copyright (C) 2006, 2011 Free Software Initiative of Japan
Author: NIIBE Yutaka <gniibe@fsij.org>
This file is a part of Gnuk, a GnuPG USB Token implementation.
Gnuk is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Gnuk is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
import usb
USB_RT_HUB = (usb.TYPE_CLASS | usb.RECIP_DEVICE)
USB_RT_PORT = (usb.TYPE_CLASS | usb.RECIP_OTHER)
USB_PORT_FEAT_RESET = 4
USB_PORT_FEAT_POWER = 8
USB_PORT_FEAT_INDICATOR = 22
USB_DIR_IN = 0x80 # device to host
COMMAND_SET_NONE = 0
COMMAND_SET_LED = 1
COMMAND_SET_POWER = 2
HUB_LED_GREEN = 2
def find_hubs(listing, verbose, busnum=None, devnum=None, hub=None):
number_of_hubs_with_feature = 0
hubs = []
busses = usb.busses()
if not busses:
raise ValueError, "can't access USB"
for bus in busses:
devices = bus.devices
for dev in devices:
if dev.deviceClass != usb.CLASS_HUB:
continue
printout_enable = 0
if (listing
or (verbose
and ((bus.dirname == busnum and dev.devnum == devnumd)
or hub == number_of_hubs_with_feature))):
printout_enable = 1
uh = dev.open()
desc = None
try:
# Get USB Hub descriptor
desc = uh.controlMsg(requestType = USB_DIR_IN | USB_RT_HUB,
request = usb.REQ_GET_DESCRIPTOR,
value = usb.DT_HUB << 8,
index = 0, buffer = 1024, timeout = 1000)
finally:
del uh
if not desc:
continue
# desc[3] is lower byte of wHubCharacteristics
if (desc[3] & 0x80) == 0 and (desc[3] & 0x03) >= 2:
# Hub doesn't have features of controling port power/indicator
continue
if printout_enable:
print "Hub #%d at %s:%03d" % (number_of_hubs_with_feature,
bus.dirname, dev.devnum)
if (desc[3] & 0x03) == 0:
print " INFO: ganged power switching."
elif (desc[3] & 0x03) == 1:
print " INFO: individual power switching."
elif (desc[3] & 0x03) == 2 or (desc[3] & 0x03) == 3:
print " WARN: no power switching."
if (desc[3] & 0x80) == 0:
print " WARN: Port indicators are NOT supported."
hubs.append({ 'busnum' : bus.dirname, 'devnum' : dev.devnum,
'indicator_support' : (desc[3] & 0x80) == 0x80,
'dev' : dev, 'num_ports' : desc[2] })
number_of_hubs_with_feature += 1
return hubs
def hub_port_status(handle, num_ports):
print " Hub Port Status:"
for i in range(num_ports):
port = i + 1
status = handle.controlMsg(requestType = USB_RT_PORT | usb.ENDPOINT_IN,
request = usb.REQ_GET_STATUS,
value = 0,
index = port, buffer = 4,
timeout = 1000)
print " Port %d: %02x%02x.%02x%02x" % (port, status[3], status[2],
status[1], status[0]),
if status[1] & 0x10:
print " indicator",
if status[1] & 0x08:
print " test" ,
if status[1] & 0x04:
print " highspeed",
if status[1] & 0x02:
print " lowspeed",
if status[1] & 0x01:
print " power",
if status[0] & 0x10:
print " RESET",
if status[0] & 0x08:
print " oc",
if status[0] & 0x04:
print " suspend",
if status[0] & 0x02:
print " enable",
if status[0] & 0x01:
print " connect",
print
import sys
COMMAND_SET_NONE = 0
COMMAND_SET_LED = 1
COMMAND_SET_POWER = 2
HUB_LED_GREEN = 2
def usage(progname):
print >> sys.stderr, """Usage: %s [{-h HUBNUM | -b BUSNUM -d DEVNUM}]
[-P PORT] [{-p [VALUE]|-l [VALUE]}]
""" % progname
def exit_with_usage(progname):
usage(progname)
exit(1)
if __name__ == '__main__':
busnum = None
devnum = None
listing = False
verbose = False
hub = None
port = 1
cmd = COMMAND_SET_NONE
if len(sys.argv) == 1:
listing = True
else:
try:
while len(sys.argv) >= 2:
option = sys.argv[1]
sys.argv.pop(1)
if option == '-h':
if busnum != None or devnum != None:
exit_with_usage(sys.argv[0])
hub = int(sys.argv[1])
sys.argv.pop(1)
elif option == '-b':
busnum = int(sys.argv[1])
sys.argv.pop(1)
elif option == '-d':
devnum = int(sys.argv[1])
sys.argv.pop(1)
elif option == '-P':
port = int(sys.argv[1])
sys.argv.pop(1)
elif option == '-l':
if cmd != COMMAND_SET_NONE:
exit_with_usage(sys.argv[0])
if len(sys.argv) > 1:
value = int(sys.argv[1])
sys.argv.pop(1)
else:
value = HUB_LED_GREEN
cmd = COMMAND_SET_LED
elif option == '-p':
if cmd != COMMAND_SET_NONE:
exit_with_usage(sys.argv[0])
if len(sys.argv) > 1:
value = int(sys.argv[1])
sys.argv.pop(1)
else:
value = 0
cmd = COMMAND_SET_POWER
elif option == '-v':
verbose = True
if len(sys.argv) == 1:
listing = True
else:
exit_with_usage(sys.argv[0])
except:
exit_with_usage(sys.argv[0])
if ((busnum != None and devnum == None)
or (busnum == None and devnum != None)):
exit_with_usage(sys.argv[0])
if hub == None and busnum == None:
hub = 0 # Default hub = 0
if cmd == COMMAND_SET_NONE:
cmd = COMMAND_SET_POWER
hubs = find_hubs(listing, verbose, busnum, devnum, hub)
if len(hubs) == 0:
print >> sys.stderr, "No hubs found."
exit(1)
if listing:
exit(0)
if hub == None:
for h in hubs:
if h['busnum'] == busnum and h['devnum'] == devnum:
dev_hub = h['dev']
nports = h['num_ports']
else:
dev_hub = hubs[hub]['dev']
nports = hubs[hub]['num_ports']
uh = dev_hub.open()
if cmd == COMMAND_SET_POWER:
feature = USB_PORT_FEAT_POWER
index = port
if value:
request = usb.REQ_SET_FEATURE
else:
request = usb.REQ_CLEAR_FEATURE
else:
request = usb.REQ_SET_FEATURE
feature = USB_PORT_FEAT_INDICATOR
index = (value << 8) | port
if verbose:
print "Send control message (REQUEST=%d, FEATURE=%d, INDEX=%d) " % (request, feature, index)
uh.controlMsg(requestType = USB_RT_PORT, request = request, value = feature,
index = index, buffer = None, timeout = 1000)
if verbose:
hub_port_status(uh,nports)
del uh
|
