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import fnmatch
import glob
import lxml.etree
import os
from subprocess import Popen, PIPE, STDOUT
import sys
import Bcfg2.Server.Lint
class Validate(Bcfg2.Server.Lint.ServerlessPlugin):
""" Ensure that the repo validates """
def __init__(self, *args, **kwargs):
Bcfg2.Server.Lint.ServerlessPlugin.__init__(self, *args, **kwargs)
self.filesets = {"metadata:groups":"%s/metadata.xsd",
"metadata:clients":"%s/clients.xsd",
"info":"%s/info.xsd",
"%s/Bundler/*.xml":"%s/bundle.xsd",
"%s/Bundler/*.genshi":"%s/bundle.xsd",
"%s/Pkgmgr/*.xml":"%s/pkglist.xsd",
"%s/Base/*.xml":"%s/base.xsd",
"%s/Rules/*.xml":"%s/rules.xsd",
"%s/Defaults/*.xml":"%s/defaults.xsd",
"%s/etc/report-configuration.xml":"%s/report-configuration.xsd",
"%s/Svcmgr/*.xml":"%s/services.xsd",
"%s/Deps/*.xml":"%s/deps.xsd",
"%s/Decisions/*.xml":"%s/decisions.xsd",
"%s/Packages/sources.xml":"%s/packages.xsd",
"%s/GroupPatterns/config.xml":"%s/grouppatterns.xsd",
"%s/NagiosGen/config.xml":"%s/nagiosgen.xsd",
"%s/FileProbes/config.xml":"%s/fileprobes.xsd",
}
self.filelists = {}
self.get_filelists()
def Run(self):
schemadir = self.config['schema']
for path, schemaname in self.filesets.items():
try:
filelist = self.filelists[path]
except KeyError:
filelist = []
if filelist:
# avoid loading schemas for empty file lists
schemafile = schemaname % schemadir
try:
schema = lxml.etree.XMLSchema(lxml.etree.parse(schemafile))
except IOError:
e = sys.exc_info()[1]
self.LintError("input-output-error", str(e))
continue
except lxml.etree.XMLSchemaParseError:
e = sys.exc_info()[1]
self.LintError("schema-failed-to-parse",
"Failed to process schema %s: %s" %
(schemafile, e))
continue
for filename in filelist:
self.validate(filename, schemafile, schema=schema)
self.check_properties()
def check_properties(self):
""" check Properties files against their schemas """
for filename in self.filelists['props']:
schemafile = "%s.xsd" % os.path.splitext(filename)[0]
if os.path.exists(schemafile):
self.validate(filename, schemafile)
else:
self.LintError("properties-schema-not-found",
"No schema found for %s" % filename)
def validate(self, filename, schemafile, schema=None):
"""validate a file against the given lxml.etree.Schema.
return True on success, False on failure """
if schema is None:
# if no schema object was provided, instantiate one
try:
schema = lxml.etree.XMLSchema(lxml.etree.parse(schemafile))
except:
self.LintError("schema-failed-to-parse",
"Failed to process schema %s" % schemafile)
return False
try:
datafile = lxml.etree.parse(filename)
except SyntaxError:
lint = Popen(["xmllint", filename], stdout=PIPE, stderr=STDOUT)
self.LintError("xml-failed-to-parse",
"%s fails to parse:\n%s" % (filename,
lint.communicate()[0]))
lint.wait()
return False
except IOError:
self.LintError("xml-failed-to-read",
"Failed to open file %s" % filename)
return False
if not schema.validate(datafile):
cmd = ["xmllint"]
if self.files is None:
cmd.append("--xinclude")
cmd.extend(["--noout", "--schema", schemafile, filename])
lint = Popen(cmd, stdout=PIPE, stderr=STDOUT)
output = lint.communicate()[0]
if lint.wait():
self.LintError("xml-failed-to-verify",
"%s fails to verify:\n%s" % (filename, output))
return False
return True
def get_filelists(self):
""" get lists of different kinds of files to validate """
if self.files is not None:
listfiles = lambda p: fnmatch.filter(self.files, p % "*")
else:
listfiles = lambda p: glob.glob(p % self.config['repo'])
for path in self.filesets.keys():
if path.startswith("metadata:"):
mtype = path.split(":")[1]
self.filelists[path] = self.get_metadata_list(mtype)
elif path == "info":
if self.files is not None:
self.filelists[path] = \
[f for f in self.files
if os.path.basename(f) == 'info.xml']
else: # self.files is None
self.filelists[path] = []
for infodir in ['Cfg', 'TGenshi', 'TCheetah']:
for root, dirs, files in os.walk('%s/%s' %
(self.config['repo'],
infodir)):
self.filelists[path].extend([os.path.join(root, f)
for f in files
if f == 'info.xml'])
else:
self.filelists[path] = listfiles(path)
self.filelists['props'] = listfiles("%s/Properties/*.xml")
all_metadata = listfiles("%s/Metadata/*.xml")
# if there are other files in Metadata that aren't xincluded
# from clients.xml or groups.xml, we can't verify them. warn
# about those.
for fname in all_metadata:
if (fname not in self.filelists['metadata:groups'] and
fname not in self.filelists['metadata:clients']):
self.LintError("broken-xinclude-chain",
"Broken XInclude chain: Could not determine file type of %s" % fname)
def get_metadata_list(self, mtype):
""" get all metadata files for the specified type (clients or
group) """
if self.files is not None:
rv = fnmatch.filter(self.files, "*/Metadata/%s.xml" % mtype)
else:
rv = glob.glob("%s/Metadata/%s.xml" % (self.config['repo'], mtype))
# attempt to follow XIncludes. if the top-level files aren't
# listed in self.files, though, there's really nothing we can
# do to guess what a file in Metadata is
if rv:
try:
rv.extend(self.follow_xinclude(rv[0]))
except lxml.etree.XMLSyntaxError:
e = sys.exc_info()[1]
self.LintError("xml-failed-to-parse",
"%s fails to parse:\n%s" % (rv[0], e))
return rv
def follow_xinclude(self, xfile):
""" follow xincludes in the given file """
xdata = lxml.etree.parse(xfile)
included = set([ent.get('href') for ent in
xdata.findall('./{http://www.w3.org/2001/XInclude}include')])
rv = []
while included:
try:
filename = included.pop()
except KeyError:
continue
path = os.path.join(os.path.dirname(xfile), filename)
if self.HandlesFile(path):
rv.append(path)
groupdata = lxml.etree.parse(path)
[included.add(el.get('href'))
for el in
groupdata.findall('./{http://www.w3.org/2001/XInclude}include')]
included.discard(filename)
return rv
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