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hwdata.py
# # Copyright (c) 1999--2012 Red Hat, Inc. # # This software is licensed to you under the GNU General Public License, # version 2 (GPLv2). There is NO WARRANTY for this software, express or # implied, including the implied warranties of MERCHANTABILITY or FITNESS # FOR A PARTICULAR PURPOSE. You should have received a copy of GPLv2 # along with this software; if not, see # http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. # # Red Hat trademarks are not licensed under GPLv2. No permission is # granted to use or replicate Red Hat trademarks that are incorporated # in this software or its documentation. # import sys inPy3k = sys.version_info[0] == 3 """ Query hwdata database and return decription of vendor and/or device. """ # pylint: disable=misplaced-bare-raise class USB(object): """ Interace to usb.ids from hwdata package """ filename = '/usr/share/hwdata/usb.ids' devices = None def __init__(self, filename=None): """ Load pci.ids from file to internal data structure. parameter 'filename' can specify location of this file """ if filename: self.filename = filename else: self.filename = USB.filename self.cache = 1 if self.cache and not USB.devices: # parse usb.ids USB.devices = {} if inPy3k: f = open(self.filename, encoding='ISO8859-1') else: f = open(self.filename) lineno = 0 vendor = None device = None for line in f.readlines(): lineno += 1 l = line.split() if line.startswith('#'): if line.startswith('# List of known device classes, subclasses and protocols'): break # end of database of devices, rest is protocols, types etc. else: continue elif len(l) == 0: continue elif line.startswith('\t\t'): interface_id = l[0].lower() if len(l) > 2: interface_name = ' '.join(l[1:]) else: interface_name = '' try: USB.devices[vendor][1][device][0][interface_id] = interface_name except TypeError: sys.stderr.write("Unknown line at line {0} in {1}.\n".format(lineno, self.filename)) elif line.startswith('\t'): device = l[0].lower() device_name = ' '.join(l[1:]) USB.devices[vendor][1][device] = [device_name, {}] else: vendor = l[0].lower() vendor_name = ' '.join(l[1:]) if vendor not in USB.devices: USB.devices[vendor] = [vendor_name, {}] else: # this should not happen USB.devices[vendor][0] = vendor_name def get_vendor(self, vendor): """ Return description of vendor. Parameter is two byte code in hexa. If vendor is unknown None is returned. """ vendor = vendor.lower() if self.cache: if vendor in USB.devices: return USB.devices[vendor][0] else: return None else: raise # not implemented yet def get_device(self, vendor, device): """ Return description of device. Parameters are two byte code variables in hexa. If device is unknown None is returned. """ vendor = vendor.lower() device = device.lower() if self.cache: if vendor in USB.devices: if device in USB.devices[vendor][1]: return USB.devices[vendor][1][device][0] else: return None else: return None else: raise # not implemented yet class PCI(object): """ Interace to pci.ids from hwdata package """ filename = '/usr/share/hwdata/pci.ids' devices = None def __init__(self, filename=None): """ Load pci.ids from file to internal data structure. parameter 'filename' can specify location of this file """ if filename: self.filename = filename else: self.filename = PCI.filename self.cache = 1 if self.cache and not PCI.devices: # parse pci.ids PCI.devices = {} if inPy3k: f = open(self.filename, encoding='ISO8859-1') else: f = open(self.filename) vendor = None for line in f.readlines(): l = line.split() if line.startswith('#'): continue elif len(l) == 0: continue elif line.startswith('\t\t'): continue elif line.startswith('\t'): device = l[0].lower() device_name = ' '.join(l[1:]) PCI.devices[vendor][1][device] = device_name else: vendor = l[0].lower() vendor_name = ' '.join(l[1:]) if not vendor in list(PCI.devices.keys()): PCI.devices[vendor] = [vendor_name, {}] else: # this should not happen PCI.devices[vendor][0] = vendor_name def get_vendor(self, vendor): """ Return description of vendor. Parameter is two byte code in hexa. If vendor is unknown None is returned. """ vendor = vendor.lower() if self.cache: if vendor in list(PCI.devices.keys()): return PCI.devices[vendor][0] else: return None else: raise # not implemented yet def get_device(self, vendor, device): """ Return description of device. Parameters are two byte code variables in hexa. If device is unknown None is returned. """ vendor = vendor.lower() device = device.lower() if self.cache: if vendor in list(PCI.devices.keys()): if device in list(PCI.devices[vendor][1].keys()): return PCI.devices[vendor][1][device] else: return None else: return None else: raise # not implemented yet class PNP(object): """ Interace to pnp.ids from hwdata package """ filename = '/usr/share/hwdata/pnp.ids' VENDORS = None def __init__(self, filename=None): """ Load pnp.ids from file to internal data structure. parameter 'filename' can specify location of this file """ if filename: self.filename = filename else: self.filename = PNP.filename self.cache = 1 if self.cache and not PNP.VENDORS: # parse pnp.ids PNP.VENDORS = {} if inPy3k: f = open(self.filename, encoding='ISO8859-1') else: f = open(self.filename) for line in f.readlines(): l = line.split() if line.startswith('#'): continue elif len(l) == 0: continue else: vendor_id = l[0].upper() PNP.VENDORS[vendor_id] = ' '.join(l[1:]) def get_vendor(self, vendor_id): """ Return description of vendor. Parameter is 3 character long id of vendor. If vendor is unknown None is returned. """ vendor_id = vendor_id.upper() if self.cache: if vendor_id in list(PNP.VENDORS.keys()): return PNP.VENDORS[vendor_id] else: return None else: raise # not implemented yet
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