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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# (c) 2017, Alice Ferrazzi <alice.ferrazzi@gmail.com>
# Distributed under the terms of the GNU General Public License v2 or later
import re
import os
import werkzeug
from flask import jsonify, make_response
from flask_restful import Resource, reqparse, fields, marshal
from elivepatch_server.resources.livepatch import PaTch
pack_fields = {
'KernelVersion': fields.String,
'UUID': fields.String
}
packs = {
'id': 1,
'KernelVersion': None,
'UUID': None
}
def check_uuid(uuid):
"""
Check uuid is in the correct format
:param uuid:
:return:
"""
if not uuid:
print('uuid is missing')
else:
# check uuid format
prog = re.compile('^\w{8}-\w{4}-\w{4}-\w{4}-\w{12}$')
result = prog.match(uuid)
if result:
print('UUID: ' + str(uuid))
return uuid
print('uuid format is not correct')
def get_uuid_dir(uuid):
return os.path.join('/tmp/', 'elivepatch-' + uuid)
class BuildLivePatch(Resource):
def __init__(self):
self.reqparse = reqparse.RequestParser()
self.reqparse.add_argument('KernelVersion', type=str, required=False,
help='No task title provided',
location='json')
self.reqparse.add_argument('UUID', type=str, required=False,
help='No task title provided',
location='json')
super(BuildLivePatch, self).__init__()
pass
def get(self):
return {'packs': [marshal(pack, pack_fields) for pack in packs]}
def post(self):
lpatch = PaTch()
args = self.reqparse.parse_args()
args['UUID'] = check_uuid(args['UUID'])
if args['KernelVersion']:
print("build livepatch: " + str(args))
# check vmlinux presence if not rebuild the kernel
kernel_sources_status = lpatch.get_kernel_sources(args['UUID'], args['KernelVersion'])
if not kernel_sources_status:
return make_response(jsonify({'message': 'gentoo-sources not available'}), 403)
lpatch.build_livepatch(args['UUID'], 'vmlinux')
pack = {
'id': packs['id'] + 1,
'KernelVersion': args['KernelVersion'],
'UUID' : args['UUID']
}
return {'build_livepatch': marshal(pack, pack_fields)}, 201
@staticmethod
def build_kernel_path(uuid, kernel_version):
kernel_absolute_path = 'linux-' + str(kernel_version) + '-gentoo'
kernel_path = os.path.join('/tmp/', 'elivepatch-' + uuid, 'usr',
'src', kernel_absolute_path)
return kernel_path
class SendLivePatch(Resource):
def __init__(self):
self.reqparse = reqparse.RequestParser()
self.reqparse.add_argument('KernelVersion', type=str, required=False,
help='No task title provided',
location='json')
self.reqparse.add_argument('UUID', type=str, required=False,
help='No task title provided',
location='json')
super(SendLivePatch, self).__init__()
pass
def get(self):
args = self.reqparse.parse_args()
print("get livepatch: " + str(args))
# check if is a valid UUID request
args['UUID'] = check_uuid(args['UUID'])
uuid_dir = get_uuid_dir(args['UUID'])
livepatch_full_path = os.path.join(uuid_dir, 'kpatch-01.ko')
try:
with open(livepatch_full_path, 'rb') as fp:
response = make_response(fp.read())
response.headers['content-type'] = 'application/octet-stream'
return response
except:
return make_response(jsonify({'message': 'These are not the \
patches you are looking for'}), 403)
def post(self):
return make_response(jsonify({'message': 'These are not the \
patches you are looking for'}), 403)
class GetFiles(Resource):
def __init__(self):
self.reqparse = reqparse.RequestParser()
self.reqparse.add_argument('KernelVersion', type=str, required=False,
help='No task title provided',
location='headers')
self.reqparse.add_argument('UUID', type=str, required=False,
help='No task title provided',
location='headers')
super(GetFiles, self).__init__()
pass
def get(self):
return make_response(jsonify({'message': 'These are not the \
patches you are looking for'}), 403)
def post(self):
args = self.reqparse.parse_args()
args['UUID'] = check_uuid(args['UUID'])
parse = reqparse.RequestParser()
parse.add_argument('patch', type=werkzeug.datastructures.FileStorage,
location='files')
parse.add_argument('config', type=werkzeug.datastructures.FileStorage,
location='files')
file_args = parse.parse_args()
print("file get config: " + str(file_args))
configFile = file_args['config']
configFile_name = file_args['config'].filename
patchfile = file_args['patch']
patchfile_name = file_args['patch'].filename
configFile_name = os.path.join('/tmp','elivepatch-' + args['UUID'], configFile_name)
if os.path.exists('/tmp/elivepatch-' + args['UUID']):
print('the folder: "/tmp/elivepatch-' + args['UUID'] + '" is already present')
return {'the request with ' + args['UUID'] + ' is already present'}, 201
else:
print('creating: "/tmp/elivepatch-' + args['UUID'])
os.makedirs('/tmp/elivepatch-' + args['UUID'])
configFile.save(configFile_name)
patch_fulldir_name = os.path.join('/tmp','elivepatch-' + args['UUID'], patchfile_name)
patchfile.save(patch_fulldir_name)
pack = {
'id': packs['id'] + 1,
'KernelVersion': None,
'UUID' : args['UUID']
}
return {'get_config': marshal(pack, pack_fields)}, 201
class GetID(Resource):
def __init__(self):
self.reqparse = reqparse.RequestParser()
self.reqparse.add_argument('UUID', type=str, required=False,
help='No task title provided',
location='json')
super(GetID, self).__init__()
pass
def get(self):
return make_response(jsonify({'message': 'These are not the \
patches you are looking for'}), 403)
def post(self):
args = self.reqparse.parse_args()
print("get ID: " + str(args))
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