<commit_before>#
# Copyright (C) 2014 Conjur Inc
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of
# this software and associated documentation files (the "Software"), to deal in
# the Software without restriction, including without limitation the rights to
# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
# the Software, and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
# FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
# COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
# IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

class ConjurException(Exception): pass

def _config(given):
    if given is None:
        import conjur.config
        return conjur.config.config
    return given

def new_from_netrc(netrc_file=None, config=None):
    """
    Create a Conjur API using an identity loaded from netrc.  This method
    uses the identity stored for the host `config.authn_url`.

    :param netrc_file: An alternative path to the netrc formatted file.  Defaults
        to ~/.netrc on unixy systems.
    :param config: A `conjur.config.Config` instance used to determine the host
        in the netrc file, and also passed to the `conjur.new_from_key` method to
        create the API instance using the identity.
    """
    import netrc
    config = _config(config)
    auth = netrc.netrc(netrc_file).authenticators(config.authn_url)
    if auth is None:
        raise ValueError("No authenticators found for authn_url '%s' in %s" % (
            config.authn_url,
            (netrc_file or '~/.netrc')
        ))
    login, _, api_key = auth
    return new_from_key(login, api_key, config)



def new_from_key(login, api_key, config=None):
    """
    Create a Conjur API that will authenticate on demand as the identity given
    by login and api_key.

    :param login: The login Conjur of the Conjur user or host to authenticate as.
    :param api_key: The Conjur api key *or* password to use when authenticating.
    :param config: The Config instance for the api.  If not given the global Config instance
        (`conjur.config.config`) will be used.
    """

    import conjur.api
    return conjur.api.API(credentials=(login, api_key), config=_config(config))


def new_from_token(token, config=None):
    """
    Create a Conjur API that will authenticate using the given signed Conjur token.

    This is useful if you want to act on behalf of a the identity of an
    HTTP request containing a user's signed token.

    :param token: The json formatted, *not* base64'd, Conjur authentication Token.
    :param config: Config instance for the api.  If not given, the global Config instance
        (`conjur.config.config`) will be used.
    """
    import conjur.api
    return conjur.api.API(token=token, config=_config(config))


<commit_msg>add a configure convenience method<commit_after>#
# Copyright (C) 2014 Conjur Inc
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of
# this software and associated documentation files (the "Software"), to deal in
# the Software without restriction, including without limitation the rights to
# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
# the Software, and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
# FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
# COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
# IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

class ConjurException(Exception): pass


def _config(given):
    if given is None:
        import conjur.config
        return conjur.config.config
    return given

def configure(**kwargs):
    """
    Convenience function to merge multiple settings into the default global config.

    Example:
     import conjur
     conjur.configure(stack='my-stack', account='my-account')

    """
    import conjur.config
    conjur.config.config.update(**kwargs)
    return conjur.config.config

def new_from_netrc(netrc_file=None, config=None):
    """
    Create a Conjur API using an identity loaded from netrc.  This method
    uses the identity stored for the host `config.authn_url`.

    :param netrc_file: An alternative path to the netrc formatted file.  Defaults
        to ~/.netrc on unixy systems.
    :param config: A `conjur.config.Config` instance used to determine the host
        in the netrc file, and also passed to the `conjur.new_from_key` method to
        create the API instance using the identity.
    """
    import netrc
    config = _config(config)
    auth = netrc.netrc(netrc_file).authenticators(config.authn_url)
    if auth is None:
        raise ValueError("No authenticators found for authn_url '%s' in %s" % (
            config.authn_url,
            (netrc_file or '~/.netrc')
        ))
    login, _, api_key = auth
    return new_from_key(login, api_key, config)



def new_from_key(login, api_key, config=None):
    """
    Create a Conjur API that will authenticate on demand as the identity given
    by login and api_key.

    :param login: The login Conjur of the Conjur user or host to authenticate as.
    :param api_key: The Conjur api key *or* password to use when authenticating.
    :param config: The Config instance for the api.  If not given the global Config instance
        (`conjur.config.config`) will be used.
    """

    import conjur.api
    return conjur.api.API(credentials=(login, api_key), config=_config(config))


def new_from_token(token, config=None):
    """
    Create a Conjur API that will authenticate using the given signed Conjur token.

    This is useful if you want to act on behalf of a the identity of an
    HTTP request containing a user's signed token.

    :param token: The json formatted, *not* base64'd, Conjur authentication Token.
    :param config: Config instance for the api.  If not given, the global Config instance
        (`conjur.config.config`) will be used.
    """
    import conjur.api
    return conjur.api.API(token=token, config=_config(config))



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