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# Copyright 2013 dotCloud inc.
# 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 base64
import fileinput
import json
import os
import six
from ..utils import utils
from .. import errors
INDEX_URL = 'https://index.docker.io/v1/'
DOCKER_CONFIG_FILENAME = '.dockercfg'
def swap_protocol(url):
if url.startswith('http://'):
return url.replace('http://', 'https://', 1)
if url.startswith('https://'):
return url.replace('https://', 'http://', 1)
return url
def expand_registry_url(hostname, insecure=False):
if hostname.startswith('http:') or hostname.startswith('https:'):
if '/' not in hostname[9:]:
hostname = hostname + '/v1/'
return hostname
if utils.ping('https://' + hostname + '/v1/_ping'):
return 'https://' + hostname + '/v1/'
elif insecure:
return 'http://' + hostname + '/v1/'
else:
raise errors.DockerException(
"HTTPS endpoint unresponsive and insecure mode isn't enabled."
)
def resolve_repository_name(repo_name, insecure=False):
if '://' in repo_name:
raise errors.InvalidRepository(
'Repository name cannot contain a scheme ({0})'.format(repo_name))
parts = repo_name.split('/', 1)
if '.' not in parts[0] and ':' not in parts[0] and parts[0] != 'localhost':
# This is a docker index repo (ex: foo/bar or ubuntu)
return INDEX_URL, repo_name
if len(parts) < 2:
raise errors.InvalidRepository(
'Invalid repository name ({0})'.format(repo_name))
if 'index.docker.io' in parts[0] or 'registry.hub.docker.com' in parts[0]:
raise errors.InvalidRepository(
'Invalid repository name, try "{0}" instead'.format(parts[1])
)
return expand_registry_url(parts[0], insecure), parts[1]
def resolve_authconfig(authconfig, registry=None):
"""Return the authentication data from the given auth configuration for a
specific registry. We'll do our best to infer the correct URL for the
registry, trying both http and https schemes. Returns an empty dictionnary
if no data exists."""
# Default to the public index server
registry = registry or INDEX_URL
# Ff its not the index server there are three cases:
#
# 1. this is a full config url -> it should be used as is
# 2. it could be a full url, but with the wrong protocol
# 3. it can be the hostname optionally with a port
#
# as there is only one auth entry which is fully qualified we need to start
# parsing and matching
if '/' not in registry:
registry = registry + '/v1/'
if not registry.startswith('http:') and not registry.startswith('https:'):
registry = 'https://' + registry
if registry in authconfig:
return authconfig[registry]
return authconfig.get(swap_protocol(registry), None)
def encode_auth(auth_info):
return base64.b64encode(auth_info.get('username', '') + b':' +
auth_info.get('password', ''))
def decode_auth(auth):
if isinstance(auth, six.string_types):
auth = auth.encode('ascii')
s = base64.b64decode(auth)
login, pwd = s.split(b':')
return login.decode('ascii'), pwd.decode('ascii')
def encode_header(auth):
auth_json = json.dumps(auth).encode('ascii')
return base64.b64encode(auth_json)
def encode_full_header(auth):
""" Returns the given auth block encoded for the X-Registry-Config header.
"""
return encode_header({'configs': auth})
def load_config(root=None):
"""Loads authentication data from a Docker configuration file in the given
root directory."""
conf = {}
data = None
config_file = os.path.join(root or os.environ.get('HOME', '.'),
DOCKER_CONFIG_FILENAME)
# First try as JSON
try:
with open(config_file) as f:
conf = {}
for registry, entry in six.iteritems(json.load(f)):
username, password = decode_auth(entry['auth'])
conf[registry] = {
'username': username,
'password': password,
'email': entry['email'],
'serveraddress': registry,
}
return conf
except:
pass
# If that fails, we assume the configuration file contains a single
# authentication token for the public registry in the following format:
#
# auth = AUTH_TOKEN
# email = email@domain.com
try:
data = []
for line in fileinput.input(config_file):
data.append(line.strip().split(' = ')[1])
if len(data) < 2:
# Not enough data
raise errors.InvalidConfigFile(
'Invalid or empty configuration file!')
username, password = decode_auth(data[0])
conf[INDEX_URL] = {
'username': username,
'password': password,
'email': data[1],
'serveraddress': INDEX_URL,
}
return conf
except:
pass
# If all fails, return an empty config
return {}
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