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#
# ISA_cve_plugin.py - CVE checker plugin, part of ISA FW
#
# Copyright (c) 2015 - 2016, Intel Corporation
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of Intel Corporation nor the names of its contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import subprocess
import os, sys
import re
CVEChecker = None
pkglist = "/cve_check_tool_pkglist"
class ISA_CVEChecker:
initialized = False
def __init__(self, ISA_config):
self.cacert = ISA_config.cacert
self.reportdir = ISA_config.reportdir
self.timestamp = ISA_config.timestamp
self.logfile = ISA_config.logdir + "/isafw_cvelog"
self.report_name = ISA_config.reportdir + "/cve_report_" + \
ISA_config.machine + "_" + ISA_config.timestamp
self.initialized = True
with open(self.logfile, 'a') as flog:
flog.write("\nPlugin ISA_CVEChecker initialized!\n")
output = ""
# check that cve-check-tool is installed
def process_package(self, ISA_pkg):
if (self.initialized):
if (ISA_pkg.name and ISA_pkg.version and ISA_pkg.patch_files):
alias_pkgs_faux = []
# need to compose faux format line for cve-check-tool
cve_patch_info = self.process_patch_list(ISA_pkg.patch_files)
pkgline_faux = ISA_pkg.name + "," + ISA_pkg.version + "," + cve_patch_info + ",\n"
if ISA_pkg.aliases:
for a in ISA_pkg.aliases:
alias_pkgs_faux.append(
a + "," + ISA_pkg.version + "," + cve_patch_info + ",\n")
pkglist_faux = pkglist + "_" + self.timestamp + ".faux"
with open(self.reportdir + pkglist_faux, 'a') as fauxfile:
fauxfile.write(pkgline_faux)
for a in alias_pkgs_faux:
fauxfile.write(a)
with open(self.logfile, 'a') as flog:
flog.write("\npkg info: " + pkgline_faux)
else:
self.initialized = False
with open(self.logfile, 'a') as flog:
flog.write(
"Mandatory arguments such as pkg name, version and list of patches are not provided!\n")
flog.write("Not performing the call.\n")
else:
with open(self.logfile, 'a') as flog:
flog.write(
"Plugin hasn't initialized! Not performing the call.\n")
def process_report(self):
if not os.path.isfile(self.reportdir + pkglist + "_" + self.timestamp + ".faux"):
return
if (self.initialized):
with open(self.logfile, 'a') as flog:
flog.write("Creating report in HTML format.\n")
result = self.process_report_type("html")
with open(self.logfile, 'a') as flog:
flog.write("Creating report in CSV format.\n")
result = self.process_report_type("csv")
pkglist_faux = pkglist + "_" + self.timestamp + ".faux"
os.remove(self.reportdir + pkglist_faux)
with open(self.logfile, 'a') as flog:
flog.write("Creating report in XML format.\n")
self.write_report_xml(result)
def write_report_xml(self, result):
try:
from lxml import etree
except ImportError:
try:
import xml.etree.cElementTree as etree
except ImportError:
import xml.etree.ElementTree as etree
num_tests = 0
root = etree.Element('testsuite', name='CVE_Plugin', tests='1')
if result :
num_tests = 1
tcase = etree.SubElement(
root, 'testcase', classname='ISA_CVEChecker', name="Error in cve-check-tool")
etree.SubElement( tcase, 'failure', message=result, type='violation')
else:
with open(self.report_name + ".csv", 'r') as f:
for line in f:
num_tests += 1
line = line.strip()
line_sp = line.split(',', 2)
if (len(line_sp) >= 3) and (line_sp[2].startswith('CVE')):
tcase = etree.SubElement(
root, 'testcase', classname='ISA_CVEChecker', name=line.split(',', 1)[0])
etree.SubElement(
tcase, 'failure', message=line, type='violation')
else:
tcase = etree.SubElement(
root, 'testcase', classname='ISA_CVEChecker', name=line.split(',', 1)[0])
root.set('tests', str(num_tests))
tree = etree.ElementTree(root)
output = self.report_name + '.xml'
try:
tree.write(output, encoding='UTF-8',
pretty_print=True, xml_declaration=True)
except TypeError:
tree.write(output, encoding='UTF-8', xml_declaration=True)
def process_report_type(self, rtype):
# now faux file is ready and we can process it
args = ""
result = ""
tool_stderr_value = ""
args += "cve-check-tool "
if self.cacert:
args += "--cacert '%s' " % self.cacert
if rtype != "html":
args += "-c "
rtype = "csv"
pkglist_faux = pkglist + "_" + self.timestamp + ".faux"
args += "-a -t faux '" + self.reportdir + pkglist_faux + "'"
with open(self.logfile, 'a') as flog:
flog.write("Args: " + args)
try:
popen = subprocess.Popen(
args, shell=True, env=os.environ, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
result = popen.communicate()
except:
tool_stderr_value = "Error in executing cve-check-tool" + str(sys.exc_info())
with open(self.logfile, 'a') as flog:
flog.write("Error in executing cve-check-tool: " +
str(sys.exc_info()))
else:
stdout_value = result[0]
tool_stderr_value = result[1].decode('utf-8')
if not tool_stderr_value and popen.returncode == 0:
report = self.report_name + "." + rtype
with open(report, 'wb') as freport:
freport.write(stdout_value)
else:
tool_stderr_value = tool_stderr_value + \
"\ncve-check-tool terminated with exit code " + str(popen.returncode)
return tool_stderr_value
def process_patch_list(self, patch_files):
patch_info = ""
for patch in patch_files:
patch1 = patch.partition("cve")
if (patch1[0] == patch):
# no cve substring, try CVE
patch1 = patch.partition("CVE")
if (patch1[0] == patch):
continue
patchstripped = patch1[2].split('-')
try:
patch_info += " CVE-" + \
patchstripped[1] + "-" + re.findall('\d+', patchstripped[2])[0]
except IndexError:
# string parsing attempt failed, so just skip this patch
continue
return patch_info
# ======== supported callbacks from ISA ============= #
def init(ISA_config):
global CVEChecker
CVEChecker = ISA_CVEChecker(ISA_config)
def getPluginName():
return "ISA_CVEChecker"
def process_package(ISA_pkg):
global CVEChecker
return CVEChecker.process_package(ISA_pkg)
def process_report():
global CVEChecker
return CVEChecker.process_report()
# ==================================================== #
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