ó oBú]c@s˜dZddlZddlZddlmZddlmZddlm Z ddlm Z e Z ej e ƒZdd„Zdd„Zd „ZdS( s Seed Random ----------- **Summary:** provide random seed data Since all cloud instances started from the same image will produce very similar data when they are first booted, as they are all starting with the same seed for the kernel's entropy keyring. To avoid this, random seed data can be provided to the instance either as a string or by specifying a command to run to generate the data. Configuration for this module is under the ``random_seed`` config key. The ``file`` key specifies the path to write the data to, defaulting to ``/dev/urandom``. Data can be passed in directly with ``data``, and may optionally be specified in encoded form, with the encoding specified in ``encoding``. .. note:: when using a multiline value for ``data`` or specifying binary data, be sure to follow yaml syntax and use the ``|`` and ``!binary`` yaml format specifiers when appropriate Instead of specifying a data string, a command can be run to generate/collect the data to be written. The command should be specified as a list of args in the ``command`` key. If a command is specified that cannot be run, no error will be reported unless ``command_required`` is set to true. For example, to use ``pollinate`` to gather data from a remote entropy server and write it to ``/dev/urandom``, the following could be used:: random_seed: file: /dev/urandom command: ["pollinate", "--server=http://local.polinate.server"] command_required: true **Internal name:** ``cc_seed_random`` **Module frequency:** per instance **Supported distros:** all **Config keys**:: random_seed: file: data: encoding: command: [, , ...] command_required: iÿÿÿÿN(tBytesIO(tlog(t PER_INSTANCE(tutilcCsŽ|s dS| s#|jƒd kr0tj|ƒS|jƒd krOtj|ƒS|jƒd krztj|dtddƒStd |ƒ‚dS( Nttrawtbase64tb64tgziptgztquiettdecodes Unknown random_seed encoding: %s(R(sbase64R(RR ( tlowerRt encode_textRt b64decodet decomp_gziptFalsetNonetIOError(tdatatencoding((sC/usr/lib/python2.7/site-packages/cloudinit/config/cc_seed_random.pyt_decodeKs  cCs¡| r|rtdƒ‚n|s3tjdƒdS|d}tj|ƒs„|rmtdjd|ƒƒ‚q„tjd|ƒdSntj|d|dtƒdS( Ns"no command found but required=truesno command providedis+command '{cmd}' not found but required=truetcmds'command '%s' not found for seed_commandtenvtcapture(t ValueErrortLOGtdebugRtwhichtformattsubpR(tcommandtrequiredRR((sC/usr/lib/python2.7/site-packages/cloudinit/config/cc_seed_random.pythandle_random_seed_commandXs   cCsy|jdiƒ}|jddƒ}|jddƒ}tƒ}|rj|jt|d|jdƒƒƒn|jj} | r¥d| kr¥|jtj| dƒƒn|jƒ}t |ƒrì|j d|t |ƒ|ƒtj ||ƒn|jddƒ} |jd t ƒ} y6tjjƒ} || d <s