r00t2
/
bdisk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Activity

parsing, but need to finish extended value validations for confparser and then get to work actually making the stuff go

This commit is contained in:
brent s. 2018-05-30 13:43:30 -04:00
parent 7c0c7bf5c0
commit 0682137b21
5 changed files with 88 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
bdisk/bdisk.xsd
View File

@ -645,6 +645,13 @@
<xs:attribute name="keyid" type="t_gpg_keyid" use="required"/>
<xs:attribute name="publish" type="xs:boolean" use="optional"/>
<xs:attribute name="prompt_passphrase" type="xs:boolean" use="required"/>
<xs:attribute name="passphrase" use="optional">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:pattern value="[!&quot;#$%&amp;\\'\(\)\*\+,\-\./0123456789:;&lt;=&gt;\?@ABCDEFGHIJKLMNOPQRSTUVWXYZ\[\]\^_`abcdefghijklmnopqrstuvwxyz\{\|\}~ ]+"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="gnupghome" use="optional">
<xs:simpleType>
<xs:restriction base="xs:string">

61
bdisk/confparse.py
View File

@ -56,7 +56,7 @@ class Conf(object):
self.cfg = {}
if validate_cfg:
# Validation post-substitution
self.validate()
self.validate(parsed = False)

def get_pki_obj(self, pki, pki_type):
elem = {}
@ -82,8 +82,7 @@ class Conf(object):
return(elem)

def get_source(self, source, item, _source):
_source_item = {'flags': [],
'fname': None}
_source_item = {'flags': [], 'fname': None}
elem = source.xpath('./{0}'.format(item))[0]
if item == 'checksum':
if elem.get('explicit', False):
@ -132,6 +131,8 @@ class Conf(object):
return(_source_item)

def get_xsd(self):
if isinstance(self.xsd, lxml.etree.XMLSchema):
return(self.xsd)
if not self.xsd:
path = os.path.join(os.path.dirname(__file__), 'bdisk.xsd')
else:
@ -231,10 +232,12 @@ class Conf(object):
for e in self.profile.xpath(_xpath):
for se in e:
if not isinstance(se, lxml.etree._Comment):
self.cfg[t][se.tag] = se.text
self.cfg[t][se.tag] = transform.xml2py(se.text,
attrib = False)
for e in ('desc', 'uri', 'ver', 'max_recurse'):
_xpath = './meta/{0}/text()'.format(e)
self.cfg[e] = self.profile.xpath(_xpath)[0]
self.cfg[e] = transform.xml2py(self.profile.xpath(_xpath)[0],
attrib = False)
# HERE is where we would handle regex patterns.
# But we don't, because they're in self.xml_suppl.btags['regex'].
#self.cfg['regexes'] = {}
@ -249,7 +252,7 @@ class Conf(object):
self.cfg['pki'] = {'clients': []}
elem = self.profile.xpath('./pki')[0]
self.cfg['pki']['overwrite'] = transform.xml2py(
elem.get('overwrite', 'no'))
elem.get('overwrite', 'false'))
ca = elem.xpath('./ca')[0]
clients = elem.xpath('./client')
self.cfg['pki']['ca'] = self.get_pki_obj(ca, 'ca')
@ -266,7 +269,9 @@ class Conf(object):
'uuid': None}
for a in self.cfg['profile']:
if a in self.profile.attrib:
self.cfg['profile'][a] = self.profile.attrib[a]
self.cfg['profile'][a] = transform.xml2py(
self.profile.attrib[a],
attrib = True)
return()

def parse_sources(self):
@ -306,13 +311,49 @@ class Conf(object):
attrib = False)
return()

def validate(self):
# TODO: perform further validations that we can't do in XSD.
def validate(self, parsed = False):
xsd = self.get_xsd()
self.xsd = etree.XMLSchema(xsd)
if not isinstance(xsd, lxml.etree.XMLSchema):
self.xsd = etree.XMLSchema(xsd)
else:
pass
# This would return a bool if it validates or not.
#self.xsd.validate(self.xml)
# We want to get a more detailed exception.
xml = etree.fromstring(self.xml_suppl.return_full())
self.xsd.assertValid(xml)
if parsed:
# TODO: perform further validations that we can't do in XSD.
# We wait until after it's parsed to evaluate because otherwise we
# can't use utils.valid().
# We only bother with stuff that would hinder building, though -
# e.g. we don't check that profile's UUID is a valid UUID4.
# URLs
for url in (self.cfg['uri'], self.cfg['dev']['website']):
if not valid.url(url):
raise ValueError('{0} is not a valid URL.'.format(url))
# Emails
for k in self.cfg['gpg']['keys']:
if not valid.email(k['email']):
raise ValueError(
'GPG key {0}: {1} is not a valid email '
'address'.format(k['name'], k['email']))
if not valid.email(self.cfg['dev']['email']):
raise ValueError('{0} is not a valid email address'.format(
self.cfg['dev']['email']))
if self.cfg['pki']:
if 'subject' in self.cfg['pki']['ca']:
if not valid.email(
self.cfg['pki']['ca']['subject']['emailAddress']):
raise ValueError('{0} is not a valid email '
'address'.format(
self.cfg['pki']['ca']['subject']['emailAddress']))

if not self.cfg['pki'][x]['subject']:
continue
if not valid.email(
self.cfg['pki'][x]['subject']['emailAddress']):
raise ValueError('{0} is not a valid email '
'address'.format(
self.cfg['pki'][x]['subject']['email']))
return()

33
bdisk/utils.py
View File

@ -77,6 +77,8 @@ class detect(object):

def password_hash_salt(self, salted_hash):
_hash_list = salted_hash.split('$')
if len(_hash_list) < 3:
return(None)
salt = _hash_list[2]
return(salt)

@ -630,10 +632,28 @@ class transform(object):
if _hash:
acct['hash_algo'] = _hash
else:
raise ValueError(
'Invalid salted password hash: {0}'.format(
elem.text)
)
acct['hash_algo'] = None
# We no longer raise ValueError. Per shadow(5):
#######################################################
# If the password field contains some string that is
# not a valid result of crypt(3), for instance ! or *,
# the user will not be able to use a unix password to
# log in (but the user may log in the system by other
# means).
# This field may be empty, in which case no passwords
# are required to authenticate as the specified login
# name. However, some applications which read the
# /etc/shadow file may decide not to permit any access
# at all if the password field is empty.
# A password field which starts with an exclamation
# mark means that the password is locked. The remaining
# characters on the line represent the password field
# before the password was locked.
#######################################################
# raise ValueError(
# 'Invalid salted password hash: {0}'.format(
# elem.text)
# )
acct['salt_hash'] = elem.text
acct['passphrase'] = None
else:
@ -873,13 +893,13 @@ class xml_supplicant(object):
return(cfg)

def _parse_regexes(self):
for regex in self.profile.xpath('//meta/regexes/pattern'):
for regex in self.profile.xpath('./meta/regexes/pattern'):
_key = 'regex%{0}'.format(regex.attrib['id'])
self.btags['regex'][_key] = regex.text
return()

def _parse_variables(self):
for variable in self.profile.xpath('//meta/variables/variable'):
for variable in self.profile.xpath('./meta/variables/variable'):
self.btags['variable'][
'variable%{0}'.format(variable.attrib['id'])
] = variable.text
@ -976,7 +996,6 @@ class xml_supplicant(object):
return(path)

def return_full(self):
#nsmap = self.return_naked_ns()
# https://stackoverflow.com/a/22553145/733214
local_xml = lxml.etree.Element('bdisk',
nsmap = self.orig_xml.nsmap,

2
bin/xmllint.sh
View File

@ -1,3 +1,3 @@
#!/bin/bash

xmllint -schema ../bdisk/bdisk.xsd ../docs/examples/multi_profile.xml --noout
xmllint -schema /opt/dev/bdisk/bdisk/bdisk.xsd /opt/dev/bdisk/docs/examples/multi_profile.xml --noout

6
docs/examples/single_profile.xml
View File

@ -43,10 +43,10 @@
<!-- Salted/hashed password is "test" -->
<rootpass hashed="true">$6$7KfIdtHTcXwVrZAC$LZGNeMNz7v5o/cYuA48FAxtZynpIwO5B1CPGXnOW5kCTVpXVt4SypRqfM.AoKkFt/O7MZZ8ySXJmxpELKmdlF1</rootpass>
<user sudo="true">
<username>{xpath%//meta/names/uxname/text()}</username>
<username>{xpath%../../../meta/names/uxname/text()}</username>
<!-- You can also use substitution from different profiles in this same configuration: -->
<!-- <username>{xpath%//profile[@name='another_profile']/meta/names/uxname"}</username> -->
<comment>{xpath%//meta/dev/author/text()}</comment>
<comment>{xpath%../../../meta/dev/author/text()}</comment>
<password hashed="false"
hash_algo="sha512"
salt="auto">testpassword</password>
@ -153,7 +153,7 @@
</subject>
</client>
</pki>
<!-- If prompt_passphrase is "no" and passphrase attribute is not given for a gpg element, we will try to use a
<!-- If prompt_passphrase is "false" and passphrase attribute is not given for a gpg element, we will try to use a
blank passphrase for all operations. -->
<gpg keyid="none"
gnupghome="none"