#!/usr/bin/env python
#
# make-usb - Creates a file containing vendor and product ids.
# It use the databases at
# http://www.linux-usb.org/usb.ids
# to create our file epan/dissectors/usb.c
#
# It also uses the values culled out of libgphoto2 using usb-ptp-extract-models.pl

import re
import sys

if sys.version_info[0] < 3:
    import urllib
else:
    import urllib.request, urllib.error, urllib.parse

MODE_IDLE           = 0
MODE_VENDOR_PRODUCT = 1
MIN_VENDORS = 2900 # 2948 as of 2015-06-28
MIN_PRODUCTS = 15000 # 15415 as of 2015-06-28

mode = MODE_IDLE

# Grab from linux-usb.org
if sys.version_info[0] < 3:
    response = urllib.urlopen('http://www.linux-usb.org/usb.ids')
else:
    response = urllib.request.urlopen('http://www.linux-usb.org/usb.ids')
lines = response.read().splitlines()

vendors  = dict()
products = dict()
vendors_str="static const value_string usb_vendors_vals[] = {\n"
products_str="static const value_string usb_products_vals[] = {\n"


for line in lines:
    line = line.rstrip()

    if line == "# Vendors, devices and interfaces. Please keep sorted.":
        mode = MODE_VENDOR_PRODUCT
        continue
    elif line == "# List of known device classes, subclasses and protocols":
        mode = MODE_IDLE
        continue

    if mode == MODE_VENDOR_PRODUCT:
        if re.match("^[0-9a-f]{4}", line):
            last_vendor=line[:4]
            vendors[last_vendor] = re.sub("\"", "\\\"", re.sub("\?+", "?", repr(line[4:].strip())[1:-1].replace("\\", "\\\\")))
        elif re.match("^\t[0-9a-f]{4}", line):
            line = line.strip()
            product = "%s%s"%(last_vendor, line[:4])
            products[product] = re.sub("\"", "\\\"", re.sub("\?+", "?", repr(line[4:].strip())[1:-1].replace("\\", "\\\\")))


# Grab from libgphoto (indirectly through tools/usb-ptp-extract-models.pl)
u = open('tools/usb-ptp-extract-models.txt','r')
for line in u.readlines():
    fields=line.split()
    products[fields[0]]= ' '.join(fields[1:])

if (len(vendors) < MIN_VENDORS):
    sys.stderr.write("Not enough vendors: %d\n" % len(vendors))
    sys.exit(1)

if (len(products) < MIN_PRODUCTS):
    sys.stderr.write("Not enough products: %d\n" % len(products))
    sys.exit(1)

for v in sorted(vendors):
    vendors_str += "    { 0x%s, \"%s\" },\n"%(v,vendors[v])

vendors_str += """    { 0, NULL }\n};
value_string_ext ext_usb_vendors_vals = VALUE_STRING_EXT_INIT(usb_vendors_vals);
"""

for p in sorted(products):
    products_str += "    { 0x%s, \"%s\" },\n"%(p,products[p])

products_str += """    { 0, NULL }\n};
value_string_ext ext_usb_products_vals = VALUE_STRING_EXT_INIT(usb_products_vals);
"""

header="""/* usb.c
 * USB vendor id and product ids
 * This file was generated by running python ./tools/make-usb.py
 * Don't change it directly.
 *
 * Copyright 2012, Michal Labedzki for Tieto Corporation
 *
 * Other values imported from libghoto2/camlibs/ptp2/library.c, music-players.h
 *
 * Copyright (C) 2001-2005 Mariusz Woloszyn <emsi@ipartners.pl>
 * Copyright (C) 2003-2013 Marcus Meissner <marcus@jet.franken.de>
 * Copyright (C) 2005 Hubert Figuiere <hfiguiere@teaser.fr>
 * Copyright (C) 2009 Axel Waggershauser <awagger@web.de>
 * Copyright (C) 2005-2007 Richard A. Low <richard@wentnet.com>
 * Copyright (C) 2005-2012 Linus Walleij <triad@df.lth.se>
 * Copyright (C) 2007 Ted Bullock
 * Copyright (C) 2012 Sony Mobile Communications AB
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

/*
 * XXX We should probably parse a USB ID file at program start instead
 * of generating this file.
 */

#include "config.h"
#include <epan/packet.h>
"""

f = open('epan/dissectors/usb.c', 'w')
f.write(header)
f.write("\n")
f.write(vendors_str)
f.write("\n\n")
f.write(products_str)
f.write("\n")
f.close()

print("Success!")