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#
#   dmi.py - class to wrap DMI Table information
#
#   Copyright 2009   Clark Williams <williams@redhat.com>
#
#   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
#
#   For the avoidance of doubt the "preferred form" of this code is one which
#   is in an open unpatent encumbered format. Where cryptographic key signing
#   forms part of the process of creating an executable the information
#   including keys needed to generate an equivalently functional executable
#   are deemed to be part of the source code.
#

import sys
import os
import subprocess
sys.pathconf = "."
import xmlout
import libxml2
import libxslt
import dmidecode

def ProcessWarnings():
    warnings = dmidecode.get_warnings()
    if warnings == None:
        return

    for warnline in warnings.split('\n'):
        # Ignore these warnings, as they are "valid" if not running as root
        if warnline == '/dev/mem: Permission denied':
            continue
        if warnline == 'No SMBIOS nor DMI entry point found, sorry.':
            continue

        # All other warnings will be printed
        if len(warnline) > 0:
            print "** DMI WARNING ** %s" % warnline

    dmidecode.clear_warnings()


class DMIinfo(object):
    '''class used to obtain DMI info via python-dmidecode'''

    def __init__(self, config):
        self.version = '0.3'
        self.smbios = None
        self.sharedir = config.installdir

        self.dmixml = dmidecode.dmidecodeXML()
        self.smbios = dmidecode.dmi.replace('SMBIOS ', '').replace(' present', '')

        xsltdoc = self.__load_xslt('rteval_dmi.xsl')
        self.xsltparser = libxslt.parseStylesheetDoc(xsltdoc)


    def __load_xslt(self, fname):
        if os.path.exists(fname):
            return libxml2.parseFile(fname)
        elif os.path.exists(self.sharedir + '/' + fname):
            return libxml2.parseFile(self.sharedir + '/' + fname)
        else:
            raise RuntimeError, 'Could not locate XSLT template for DMI data (%s)' % fname

    def genxml(self, xml):
        self.dmixml.SetResultType(dmidecode.DMIXML_DOC)
        resdoc = self.xsltparser.applyStylesheet(self.dmixml.QuerySection('all'), None)
        node = resdoc.getRootElement().copyNode(1)
        node.newProp("DMIinfo_version", self.version)
        xml.AppendXMLnodes(node)


def unit_test(rootdir):
    from pprint import pprint

    class unittest_ConfigDummy(object):
        def __init__(self, rootdir):
            self.config = {'installdir': '%s/rteval'}
            self.__update_vars()

        def __update_vars(self):
            for k in self.config.keys():
                self.__dict__[k] = self.config[k]

    try:
        ProcessWarnings()
        if os.getuid() != 0:
            print "** ERROR **  Must be root to run this unit_test()"
            return 1

        cfg = unittest_ConfigDummy(rootdir)
        d = DMIinfo(cfg)
        x = xmlout.XMLOut('dmi_test', "0.0")
        x.NewReport()
        d.genxml(x)
        x.close()
        x.Write('-')
        return 0
    except Exception, e:
        print "** EXCEPTION: %s" % str(e)
        return 1

if __name__ == '__main__':
    sys.exit(unit_test('.'))