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#!/usr/bin/python
# -*- Mode: python; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
#
# This program 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 2 of the License, or
# (at your option) any later version.
#
# This program 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:
#
# Copyright (C) 2011 Red Hat, Inc.
#
import binascii
import string
import sys
import defs
import wmc
URBF_UNKNOWN = 0
URBF_GET_DESC = 1
URBF_SEL_CONF = 2
URBF_RESET_PIPE = 3
URBF_TRANSFER = 4
URBF_GET_STATUS = 5
URBF_CONTROL = 6
URBF_SET_FEATURE = 7
URBF_ABORT_PIPE = 8
URBF_CLASS_IFACE = 9
URBF_CLEAR_FEATURE = 10
URBF_VENDOR_DEVICE = 11
funcs = {
"-- URB_FUNCTION_GET_DESCRIPTOR_FROM_DEVICE:": (URBF_GET_DESC, False, None),
"-- URB_FUNCTION_SELECT_CONFIGURATION:": (URBF_SEL_CONF, False, None),
"-- URB_FUNCTION_RESET_PIPE:": (URBF_RESET_PIPE, False, None),
"-- URB_FUNCTION_BULK_OR_INTERRUPT_TRANSFER:": (URBF_TRANSFER, True, "T"),
"-- URB_FUNCTION_GET_STATUS_FROM_DEVICE:": (URBF_GET_STATUS, False, None),
"-- URB_FUNCTION_CONTROL_TRANSFER:": (URBF_CONTROL, True, "C"),
"-- URB_FUNCTION_SET_FEATURE_TO_DEVICE:": (URBF_SET_FEATURE, False, None),
"-- URB_FUNCTION_ABORT_PIPE:": (URBF_SET_FEATURE, False, None),
"-- URB_FUNCTION_CLASS_INTERFACE:": (URBF_CLASS_IFACE, True, "C"),
"-- URB_FUNCTION_CLEAR_FEATURE_TO_DEVICE:": (URBF_CLEAR_FEATURE, False, None),
"-- URB_FUNCTION_VENDOR_DEVICE:": (URBF_VENDOR_DEVICE, False, None)
}
def get_urb_info(l):
direction = defs.TO_UNKNOWN
tsstr = ""
if l[0] == '[':
idx = l.find(" ms]")
if idx <= 0:
return (defs.TO_UNKNOWN, -1, -1)
tsstr = l[1:idx]
idx = string.find(l, ">>> URB ")
if idx >= 0:
direction = defs.TO_MODEM
else:
idx = string.find(l, "<<< URB ")
if idx >= 0:
direction = defs.TO_HOST
else:
return (defs.TO_UNKNOWN, -1, -1)
# Yay, valid packet, grab URB number
numstr = ""
for c in l[idx + 9:]:
if c.isdigit():
numstr = numstr + c
else:
break
if not len(numstr):
raise Exception("Failed to get URB number ('%s')" % l)
return (direction, int(numstr), int(tsstr))
class Packet:
def __init__(self, line, control_prot, transfer_prot):
self.direction = defs.TO_UNKNOWN
self.func = URBF_UNKNOWN
self.control_prot = control_prot
self.transfer_prot = transfer_prot
self.data = None
self.urbnum = 0
self.timestamp = 0
self.protocol = None
self.has_data = False
self.typecode = None
self.lines = []
self.in_data = False
self.data_complete = False
self.tmpdata = ""
self.fcomplete = None
self.funpack = None
self.fshow = None
# Check if this is actually a packet
self.lines.append(line)
(self.direction, self.urbnum, self.timestamp) = get_urb_info(line)
def add_line(self, line):
line = line.strip()
if not len(line):
return
self.lines.append(line)
if line[0] == '[':
# Usually the end of a packet, but if we need data from the next
# packet keep going
if self.has_data and not self.data_complete:
return False
return True
if not self.typecode:
# haven't gotten our "-- URB_FUNCTION_xxxx" line yet
if line.find("-- URB_FUNCTION_") >= 0:
try:
(self.func, self.has_data, self.typecode) = funcs[line]
except KeyError:
raise KeyError("URB function %s not handled" % line)
if self.func == URBF_TRANSFER:
self.protocol = self.transfer_prot
elif self.func == URBF_CONTROL or self.func == URBF_CLASS_IFACE:
self.protocol = self.control_prot
if self.protocol:
exec "from %s import get_funcs" % self.protocol
(self.fcomplete, self.funpack, self.fshow) = get_funcs()
else:
return False # not done; need more lines
if line.find("TransferBufferMDL = ") >= 0 and self.has_data:
self.in_data = True
return False # not done; need more lines
if line.find("UrbLink = ") >= 0 or line.find("UrbLink =") >= 0:
if self.in_data:
self.in_data = False
# special case: zero-length data means complete
if len(self.tmpdata) == 0:
self.data_complete = True
return True
if self.fcomplete:
self.data_complete = self.fcomplete(self.tmpdata, self.direction)
if self.data_complete:
self.data = self.funpack(self.tmpdata, self.direction)
return self.data_complete
else:
self.data = binascii.unhexlify(self.tmpdata)
self.data_complete = True
return False # not done; need more lines
if self.in_data:
if len(line) and not "no data supplied" in line:
d = line[line.index(": ") + 2:] # get data alone
self.tmpdata += d.replace(" ", "")
return False # not done; need more lines
def add_ascii(self, line, items):
if len(line) < 53:
line += " " * (53 - len(line))
for i in items:
if chr(i) in string.printable and i >= 32:
line += chr(i)
else:
line += "."
return line
def show(self):
if not self.has_data or not self.data:
return
# Ignore URBF_TRANSFER packets that appear to be returning SetupPacket data
if self.data == chr(0xa1) + chr(0x01) + chr(0x00) + chr(0x00) + chr(0x05) + chr(0x00) + chr(0x00) + chr(0x00):
return
offset = 0
items = []
printed = False
line = ""
prefix = "*"
if self.direction == defs.TO_MODEM:
prefix = ">"
elif self.direction == defs.TO_HOST:
prefix = "<"
if self.typecode:
prefix = prefix + " " + self.typecode + " "
else:
prefix = prefix + " "
prefix_printed = False
for i in self.data:
printed = False
line += " %02x" % ord(i)
items.append(ord(i))
if len(items) % 16 == 0:
output = "%04d: %s" % (offset, self.add_ascii(line, items))
if offset == 0:
print prefix + output
else:
print " " + output
line = ""
items = []
printed = True
offset += 16
prefix_printed = True
if not printed:
output = "%04d: %s" % (offset, self.add_ascii(line, items))
if prefix_printed:
print " " + output
else:
print prefix + output
print ""
if self.fshow:
self.fshow(self.data, " " * 8, self.direction)
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