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#!/usr/bin/env python

'''
bcfg2-repo-validate checks all xml files in Bcfg2
repos against their respective XML schemas
'''
__revision__ = '$Revision$'

import glob
import lxml.etree
import os
import sys
import Bcfg2.Options

if __name__ == '__main__':
    opts = {'repo': Bcfg2.Options.SERVER_REPOSITORY,
            'prefix': Bcfg2.Options.INSTALL_PREFIX,
            'verbose': Bcfg2.Options.VERBOSE,
            'configfile': Bcfg2.Options.CFILE}
    setup = Bcfg2.Options.OptionParser(opts)
    setup.parse(sys.argv[1:])
    verbose = setup['verbose']
    cpath = setup['configfile']
    prefix = setup['prefix']
    schemadir = "%s/share/bcfg2/schemas" % (prefix)
    os.chdir(schemadir)
    repo = setup['repo']

    # Get a list of all info.xml files in the bcfg2 repository
    info_list = []
    for infodir in ['Cfg', 'TGenshi', 'TCheetah']:
        for root, dirs, files in os.walk('%s/%s' % (repo, infodir)):
            for filename in files:
                if filename == 'info.xml':
                    info_list.append(os.path.join(root, filename))

    # get metadata list (with all included files)
    metadata_list = glob.glob("%s/Metadata/groups.xml" % repo)
    ref_bundles = set()
    xdata = lxml.etree.parse("%s/Metadata/groups.xml" % repo)
    included = set([ent.get('href') for ent in \
                   xdata.findall('./{http://www.w3.org/2001/XInclude}include')])
    while included:
        try:
            filename = included.pop()
        except KeyError:
            continue
        metadata_list.append("%s/Metadata/%s" % (repo, filename))
        groupdata = lxml.etree.parse("%s/Metadata/%s" % (repo, filename))
        group_ents = [ent.get('href') for ent in \
                      groupdata.
                      findall('./{http://www.w3.org/2001/XInclude}include')]
        for ent in group_ents:
            included.add(ent)
        included.discard(filename)

    # get all XIncluded bundles
    xdata.xinclude()
    for bundle in xdata.findall("//Bundle"):
        ref_bundles.add("%s/Bundler/%s" % (repo, bundle.get('name')))

    # get lists of all other xml files to validate
    clients_list = glob.glob("%s/Metadata/clients.xml" % repo)
    bundle_list = glob.glob("%s/Bundler/*.xml" % repo)
    genshibundle_list = glob.glob("%s/Bundler/*.genshi" % repo)
    pkg_list = glob.glob("%s/Pkgmgr/*.xml" % repo)
    base_list = glob.glob("%s/Base/*.xml" % repo)
    rules_list = glob.glob("%s/Rules/*.xml" % repo)
    imageinfo_list = glob.glob("%s/etc/report-configuration.xml" % repo)
    services_list = glob.glob("%s/Svcmgr/*.xml" % repo)
    deps_list = glob.glob("%s/Deps/*.xml" % repo)
    dec_list = glob.glob("%s/Decisions/*" % repo)
    pkgcfg_list = glob.glob("%s/Packages/config.xml" % repo)
    gp_list = glob.glob('%s/GroupPatterns/config.xml' % repo)

    # warn on duplicate Pkgmgr entries with the same priority
    pset = set()
    for plist in pkg_list:
        try:
            xdata = lxml.etree.parse(plist)
        except lxml.etree.XMLSyntaxError, e:
            print("Failed to parse %s: %s" % (plist, e))
        # get priority, type, group
        priority = xdata.getroot().get('priority')
        ptype = xdata.getroot().get('type')
        for pkg in xdata.findall("//Package"):
            if pkg.getparent().tag == 'Group':
                grp = pkg.getparent().get('name')
            else:
                grp = 'none'
            ptuple = (pkg.get('name'), priority, ptype, grp)
            # check if package is already listed with same priority,
            # type, grp
            if ptuple in pset:
                print("Duplicate Package %s, priority:%s, type:%s"\
                       % (pkg.get('name'), priority, ptype))
            else:
                pset.add(ptuple)

    filesets = {'metadata':(metadata_list, "%s/metadata.xsd"),
                'clients':(clients_list, "%s/clients.xsd"),
                'info':(info_list, "%s/info.xsd"),
                'bundle':(bundle_list, "%s/bundle.xsd"),
                'pkglist':(pkg_list, "%s/pkglist.xsd"),
                'base':(base_list, "%s/base.xsd"),
                'rules':(rules_list, "%s/rules.xsd"),
                'imageinfo':(imageinfo_list, "%s/report-configuration.xsd"),
                'services':(services_list, "%s/services.xsd"),
                'deps':(deps_list, "%s/deps.xsd"),
                'decisions': (dec_list, "%s/decisions.xsd"),
                'packages': (pkgcfg_list, "%s/packages.xsd"),
                'grouppatterns': (gp_list, "%s/grouppatterns.xsd"),
                }

    failures = 0
    for k, (filelist, schemaname) in list(filesets.items()):
        try:
            schema = lxml.etree.XMLSchema(lxml.etree.parse(open(schemaname%(schemadir))))
        except:
            print("Failed to process schema %s" % (schemaname%(schemadir)))
            failures = 1
            continue
        for filename in filelist:
            try:
                datafile = lxml.etree.parse(open(filename))
            except SyntaxError:
                print("%s ***FAILS*** to parse \t\t<----" % (filename))
                os.system("xmllint %s" % filename)
                failures = 1
                continue
            except IOError:
                print("Failed to open file %s \t\t<---" % (filename))
                failures = 1
                continue
            if schema.validate(datafile):
                if verbose:
                    print("%s checks out" % (filename))
            else:
                rc = os.system("xmllint --noout --xinclude --schema \
                                %s %s > /dev/null 2>/dev/null" % \
                               (schemaname % schemadir, filename))
                if rc:
                    failures = 1
                    print("%s ***FAILS*** to verify \t\t<----" % (filename))
                    os.system("xmllint --noout --xinclude --schema %s %s" % \
                              (schemaname % schemadir, filename))
                elif verbose:
                    print("%s checks out" % (filename))

    # print out missing bundle information
    if verbose:
        print("")
        for bundle in ref_bundles:
            # check for both regular and genshi bundles
            xmlbundle = "%s.xml" % bundle
            genshibundle = "%s.genshi" % bundle
            allbundles = bundle_list + genshibundle_list
            if xmlbundle not in allbundles and \
               genshibundle not in allbundles:
                print("*** Warning: Bundle %s referenced, but does not "
                                    "exist." % bundle)
        # verify bundle name attribute matches filename
        for bundle in (bundle_list + genshibundle_list):
            fname = bundle.split('Bundler/')[1].split('.')[0]
            xdata = lxml.etree.parse(bundle)
            bname = xdata.getroot().get('name')
            if fname != bname:
                print("The following names are inconsistent:")
                print("  Filename is %s" % fname)
                print("  Bundle name found in %s is %s" % (fname, bname))


    raise SystemExit, failures