Example #1
0
def config_security_check(config, verbose):
    """Checks each resource listed in the config to see if the active
       policy will permit creation of a new domain using the config.
       Returns 1 if the config passes all tests, otherwise 0.
    """
    answer = 1

    # get the domain acm_label
    domain_label = None
    domain_policy = None
    for x in sxp.children(config):
        if sxp.name(x) == 'security':
            domain_label = sxp.child_value(sxp.name(sxp.child0(x)), 'label')
            domain_policy = sxp.child_value(sxp.name(sxp.child0(x)), 'policy')

    # if no domain label, use default
    if not domain_label and security.on():
        try:
            domain_label = security.ssidref2label(security.NULL_SSIDREF)
        except:
            import traceback
            traceback.print_exc(limit=1)
            return 0
        domain_policy = 'NULL'
    elif not domain_label:
        domain_label = ""
        domain_policy = 'NULL'

    if verbose:
        print "Checking resources:"

    # build a list of all resources in the config file
    resources = []
    for x in sxp.children(config):
        if sxp.name(x) == 'device':
            if sxp.name(sxp.child0(x)) == 'vbd':
                resources.append(sxp.child_value(sxp.child0(x), 'uname'))

    # perform a security check on each resource
    for resource in resources:
        try:
            security.res_security_check(resource, domain_label)
            if verbose:
                print "   %s: PERMITTED" % (resource)

        except security.XSMError:
            print "   %s: DENIED" % (resource)
            (poltype, res_label, res_policy) = security.get_res_label(resource)
            if not res_label:
                res_label = ""
            print "   --> res: %s (%s:%s)" % (str(res_label),
                                           str(poltype), str(res_policy))
            print "   --> dom: %s (%s:%s)" % (str(domain_label),
                                           str(poltype), str(domain_policy))

            answer = 0

    return answer
Example #2
0
def config_security_check(config, verbose):
    """Checks each resource listed in the config to see if the active
       policy will permit creation of a new domain using the config.
       Returns 1 if the config passes all tests, otherwise 0.
    """
    answer = 1

    # get the domain acm_label
    domain_label = None
    domain_policy = None
    for x in sxp.children(config):
        if sxp.name(x) == 'security':
            domain_label = sxp.child_value(sxp.name(sxp.child0(x)), 'label')
            domain_policy = sxp.child_value(sxp.name(sxp.child0(x)), 'policy')

    # if no domain label, use default
    if not domain_label and security.on():
        try:
            domain_label = security.ssidref2label(security.NULL_SSIDREF)
        except:
            import traceback
            traceback.print_exc(limit=1)
            return 0
        domain_policy = 'NULL'
    elif not domain_label:
        domain_label = ""
        domain_policy = 'NULL'

    if verbose:
        print "Checking resources:"

    # build a list of all resources in the config file
    resources = []
    for x in sxp.children(config):
        if sxp.name(x) == 'device':
            if sxp.name(sxp.child0(x)) == 'vbd':
                resources.append(sxp.child_value(sxp.child0(x), 'uname'))

    # perform a security check on each resource
    for resource in resources:
        try:
            security.res_security_check(resource, domain_label)
            if verbose:
                print "   %s: PERMITTED" % (resource)

        except security.XSMError:
            print "   %s: DENIED" % (resource)
            (poltype, res_label, res_policy) = security.get_res_label(resource)
            if not res_label:
                res_label = ""
            print "   --> res: %s (%s:%s)" % (str(res_label), str(poltype),
                                              str(res_policy))
            print "   --> dom: %s (%s:%s)" % (str(domain_label), str(poltype),
                                              str(domain_policy))

            answer = 0

    return answer
Example #3
0
def check_domain_label(config, verbose):
    """All that we need to check here is that the domain label exists and
       is not null when security is on.  Other error conditions are
       handled when the config file is parsed.
    """
    answer = 0
    default_label = None
    secon = 0
    if security.on():
        default_label = security.ssidref2label(security.NULL_SSIDREF)
        secon = 1

    # get the domain acm_label
    dom_label = None
    dom_name = None
    for x in sxp.children(config):
        if sxp.name(x) == 'security':
            dom_label = sxp.child_value(sxp.name(sxp.child0(x)), 'label')
        if sxp.name(x) == 'name':
            dom_name = sxp.child0(x)

    # sanity check on domain label
    if verbose:
        print "Checking domain:"
    if (not secon) and (not dom_label):
        answer = 1
        if verbose:
            print "   %s: PERMITTED" % (dom_name)
    elif (secon) and (dom_label) and (dom_label != default_label):
        answer = 1
        if verbose:
            print "   %s: PERMITTED" % (dom_name)
    else:
        print "   %s: DENIED" % (dom_name)
        if not secon:
            print "   --> Security off, but domain labeled"
        else:
            print "   --> Domain not labeled"
        answer = 0

    return answer
Example #4
0
def check_domain_label(config, verbose):
    """All that we need to check here is that the domain label exists and
       is not null when security is on.  Other error conditions are
       handled when the config file is parsed.
    """
    answer = 0
    default_label = None
    secon = 0
    if security.on():
        default_label = security.ssidref2label(security.NULL_SSIDREF)
        secon = 1

    # get the domain acm_label
    dom_label = None
    dom_name = None
    for x in sxp.children(config):
        if sxp.name(x) == 'security':
            dom_label = sxp.child_value(sxp.name(sxp.child0(x)), 'label')
        if sxp.name(x) == 'name':
            dom_name = sxp.child0(x)

    # sanity check on domain label
    if verbose:
        print "Checking domain:"
    if (not secon) and (not dom_label):
        answer = 1
        if verbose:
            print "   %s: PERMITTED" % (dom_name)
    elif (secon) and (dom_label) and (dom_label != default_label):
        answer = 1
        if verbose:
            print "   %s: PERMITTED" % (dom_name)
    else:
        print "   %s: DENIED" % (dom_name)
        if not secon:
            print "   --> Security off, but domain labeled"
        else:
            print "   --> Domain not labeled"
        answer = 0

    return answer
Example #5
0
 def _get_config_ipaddr(config):
     val = []
     for ipaddr in sxp.children(config, elt='ip'):
         val.append(sxp.child0(ipaddr))
     return val
Example #6
0
 def _get_config_ipaddr(config):
     val = []
     for ipaddr in sxp.children(config, elt='ip'):
         val.append(sxp.child0(ipaddr))
     return val