# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or

# implied.

# See the License for the specific language governing permissions and

# limitations under the License.

import datetime

import os

import yaml

from cryptography.hazmat.primitives.asymmetric import rsa

from cryptography.hazmat.primitives import hashes

from cryptography.hazmat.primitives import serialization

from cryptography import x509

from cryptography.x509 import oid

from packstack.installer import basedefs

from packstack.installer import utils

from packstack.installer.setup_controller import Controller

controller = Controller()

PUPPET_DIR = os.path.join(basedefs.DIR_PROJECT_DIR, "puppet")

PUPPET_TEMPLATE_DIR = os.path.join(PUPPET_DIR, "templates")

HIERA_COMMON_YAML = os.path.join(basedefs.HIERADATA_DIR, "common.yaml")

# For compatibility with hiera < 3.0

HIERA_DEFAULTS_YAML = os.path.join(basedefs.HIERADATA_DIR, "defaults.yaml")

class ManifestFiles(object):

def __init__(self):

self.filelist = []

self.data = {}

# continuous manifest file that have the same marker can be

# installed in parallel, if on different servers

def addFile(self, filename, marker, data=''):

self.data[filename] = self.data.get(filename, '') + '\n' + data

for f, p in self.filelist:

if f == filename:

return

self.filelist.append((filename, marker))

def prependFile(self, filename, marker, data=''):

self.data[filename] = data + '\n' + self.data.get(filename, '')

for f, p in self.filelist:

if f == filename:

return

self.filelist.append((filename, marker))

def getFiles(self):

return [f for f in self.filelist]

def writeManifests(self):

"""

Write out the manifest data to disk, this should only be called once

write before the puppet manifests are copied to the various servers

"""

os.mkdir(basedefs.PUPPET_MANIFEST_DIR, 0o700)

for fname, data in self.data.items():

path = os.path.join(basedefs.PUPPET_MANIFEST_DIR, fname)

fd = os.open(path, os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0o600)

with os.fdopen(fd, 'w') as fp:

fp.write(data)

manifestfiles = ManifestFiles()

def getManifestTemplate(template_name):

if not template_name.endswith(".pp"):

template_name += ".pp"

with open(os.path.join(PUPPET_TEMPLATE_DIR, template_name)) as fp:

return fp.read() % controller.CONF

def appendManifestFile(manifest_name, data, marker=''):

manifestfiles.addFile(manifest_name, marker, data)

def generateHieraDataFile():

os.mkdir(basedefs.HIERADATA_DIR, 0o700)

with open(HIERA_COMMON_YAML, 'w') as outfile:

outfile.write(yaml.dump(controller.CONF,

explicit_start=True,

default_flow_style=False))

os.symlink(os.path.basename(HIERA_COMMON_YAML), HIERA_DEFAULTS_YAML)

def generate_ssl_cert(config, host, service, ssl_key_file, ssl_cert_file):

"""

Generate SSL certificate

"""

# We have to check whether the certificate already exists

cert_dir = os.path.join(config['CONFIG_SSL_CERT_DIR'], 'certs')

local_cert_name = host + os.path.basename(ssl_cert_file)

local_cert_path = os.path.join(cert_dir, local_cert_name)

if os.path.exists(local_cert_path):

return

with open(config['CONFIG_SSL_CACERT_FILE'], 'rb') as cacert_file:

ca_cert = x509.load_pem_x509_certificate(cacert_file.read())

with open(config['CONFIG_SSL_CACERT_KEY_FILE'], 'rb') as ca_key_file:

ca_key = serialization.load_pem_private_key(ca_key_file.read(),

password=None)

# create a key pair

key = rsa.generate_private_key(

public_exponent=65537,

key_size=4096,

)

hostinfo = config['HOST_DETAILS'][host]

fqdn = hostinfo['fqdn']

cn = "%s/%s" % (service, fqdn)

# if subject.CN is more than 64 chars long, cert creation will fail

if len(cn) > 64:

cn = cn[0:63]

subject = x509.Name([

x509.NameAttribute(oid.NameOID.COUNTRY_NAME,

config['CONFIG_SSL_CERT_SUBJECT_C']),

x509.NameAttribute(oid.NameOID.STATE_OR_PROVINCE_NAME,

config['CONFIG_SSL_CERT_SUBJECT_ST']),

x509.NameAttribute(oid.NameOID.LOCALITY_NAME,

config['CONFIG_SSL_CERT_SUBJECT_L']),

x509.NameAttribute(oid.NameOID. ORGANIZATION_NAME,

config['CONFIG_SSL_CERT_SUBJECT_O']),

x509.NameAttribute(oid.NameOID. ORGANIZATIONAL_UNIT_NAME,

config['CONFIG_SSL_CERT_SUBJECT_OU']),

x509.NameAttribute(oid.NameOID.COMMON_NAME, cn),

x509.NameAttribute(oid.NameOID.EMAIL_ADDRESS,

config['CONFIG_SSL_CERT_SUBJECT_MAIL']),

])

cert = x509.CertificateBuilder().subject_name(

subject

).issuer_name(

ca_cert.subject

).public_key(

key.public_key()

).serial_number(

x509.random_serial_number()

).not_valid_before(

datetime.datetime.now(datetime.timezone.utc)

).not_valid_after(

datetime.datetime.now(datetime.timezone.utc) +

datetime.timedelta(days=3650)

).add_extension(

x509.KeyUsage(

digital_signature=True,

content_commitment=True,

key_encipherment=True,

data_encipherment=False,

key_agreement=False,

key_cert_sign=False,

crl_sign=False,

encipher_only=False,

decipher_only=False,

),

critical=False,

).add_extension(

x509.ExtendedKeyUsage([

x509.ExtendedKeyUsageOID.CLIENT_AUTH,

x509.ExtendedKeyUsageOID.SERVER_AUTH,

]),

critical=False,

).sign(ca_key, hashes.SHA256())

final_cacert = ca_cert.public_bytes(serialization.Encoding.PEM)

final_cert = cert.public_bytes(serialization.Encoding.PEM)

final_key = key.private_bytes(

encoding=serialization.Encoding.PEM,

format=serialization.PrivateFormat.TraditionalOpenSSL,

encryption_algorithm=serialization.NoEncryption()

)

deliver_ssl_file(final_cacert.decode(), config['CONFIG_SSL_CACERT'], host)

deliver_ssl_file(final_cert.decode(), ssl_cert_file, host)

deliver_ssl_file(final_key.decode(), ssl_key_file, host)

with open(local_cert_path, 'wb') as f:

f.write(final_cert)

def deliver_ssl_file(content, path, host):

server = utils.ScriptRunner(host)

server.append("grep -- '{content}' {path} || "

"echo '{content}' > {path} ".format(

content=content,

path=path))

server.execute()

def gethostlist(CONF):

hosts = []

for key, value in CONF.items():

if key.endswith("_HOST"):

value = value.split('/')[0]

if value and value not in hosts:

hosts.append(value)

if key.endswith("_HOSTS"):

for host in value.split(","):

host = host.strip()

host = host.split('/')[0]

if host and host not in hosts:

hosts.append(host)

return hosts