U
    Ld+                     @   s   d Z ddlZddlZddlZddlmZ ddlmZmZm	Z	 ddl
mZmZ ddlmZmZmZ ddlmZ dZeeZdd	d
Zdd ZedddZeeeedddZdd Zdd Zedkre  dS )aT  Query standardized instance metadata provided to machine, returning a JSON
structure.

Some instance-data values may be binary on some platforms, such as userdata and
vendordata. Attempt to decompress and decode UTF-8 any binary values.

Any binary values in the instance metadata will be base64-encoded and prefixed
with "ci-b64:" in the output. userdata and, where applicable, vendordata may
be provided to the machine gzip-compressed (and therefore as binary data).
query will attempt to decompress these to a string before emitting the JSON
output; if this fails, they are treated as binary.
    N)EACCES)atomic_helperlogutil)addLogHandlerCLIread_cfg_paths)convert_jinja_instance_dataget_jinja_variable_aliasrender_jinja_payload)REDACT_SENSITIVE_VALUEZqueryc                 C   s   | st jttd} | jdddddd | jdd	td
t d d | jdddddd | jddtdd | jddtdd | jdtddd | jddddddd | jdd td!d"d# | S )$a#  Build or extend an arg parser for query utility.

    @param parser: Optional existing ArgumentParser instance representing the
        query subcommand which will be extended to support the args of
        this utility.

    @returns: ArgumentParser with proper argument configuration.
    )progZdescriptionz-dz--debug
store_trueFz+Add verbose messages during template render)actiondefaulthelpz-iz--instance-dataz,Path to instance-data.json file. Default is instance_data)typer   z-lz--list-keyszBList query keys available at the provided instance-data <varname>.z-uz--user-datazHPath to user-data file. Default is /var/lib/cloud/instance/user-data.txtz-vz--vendor-datazLPath to vendor-data file. Default is /var/lib/cloud/instance/vendor-data.txtvarname?zA dot-delimited specific variable to query from instance-data. For example: v1.local_hostname. If the value is not JSON serializable, it will be base64-encoded and will contain the prefix "ci-b64:". )r   nargsr   z-az--alldump_allz Dump all available instance-data)r   r   destr   z-fz--formatformatzOptionally specify a custom output format string. Any instance-data variable can be specified between double-curly braces. For example -f "{{ v2.cloud_name }}")r   r   r   )argparseArgumentParserNAME__doc__add_argumentstrr   get_runpathparser r"   5/usr/lib/python3/dist-packages/cloudinit/cmd/query.py
get_parser$   sp    		
		r$   c                 C   sD   t j| dd}z|dW S  tk
r>   t j|ddd Y S X dS )zAttempt to return a string of user-data from ud_file_path

    Attempt to decode or decompress if needed.
    If unable to decode the content, raw bytes will be returned.

    @returns: String of uncompressed userdata if possible, otherwise bytes.
    F)decodezutf-8T)quietr%   N)r   	load_filer%   UnicodeDecodeErrorZdecomp_gzip)Zud_file_pathZbdatar"   r"   r#   load_userdata|   s
    r)   )returnc              
   C   s  t  }t }| r| }nF|d}|dkrZ|d}t j|rF|}q^td|| |}n|}|rh|}nt j|j	d}|r|}	nt j|j	d}	|d}
zt
|}W nL ttfk
r } z*|jtkrtd| ntd	|  W 5 d
}~X Y nX t
|} zt
t
|
}W n ttfk
r4   d
}Y nX |dkrrdt|f | d< dt|	f | d< dt|
f | d< n t|| d< t|	| d< || d< | S )a  Return a dict of merged instance-data, vendordata and userdata.

    The dict will contain supplemental userdata and vendordata keys sourced
    from default user-data and vendor-data files.

    Non-root users will have redacted INSTANCE_JSON_FILE content and redacted
    vendordata and userdata values.

    :raise: IOError/OSError on absence of instance-data.json file or invalid
        access perms.
    r   r   Zinstance_data_sensitivez4Missing root-readable %s. Using redacted %s instead.zuser-data.txtzvendor-data.txtcombined_cloud_configz$No read permission on '%s'. Try sudozMissing instance-data file: %sNz<%s> file:%sZuserdataZ
vendordata)osgetuidr   r   pathexistsLOGZwarningjoinZinstance_linkr   r'   IOErrorOSErrorerrnor   errorZ	load_jsonr   r)   )r   	user_datavendor_dataZuidpathsZinstance_data_fnZredacted_data_fnZsensitive_data_fnZuser_data_fnZvendor_data_fnZcombined_cloud_config_fnZinstance_jsoner+   r"   r"   r#   _read_instance_data   sl    








r:   jinja_vars_without_aliasesjinja_vars_with_aliasesr   	list_keysc           
      C   s   d}| }| dD ]}z|| }W nJ tk
rl } z,|rHdj||d}n
d|}t||W 5 d}~X Y nX ||kr|| }n"|D ]}	t|	|kr||	 } qq|r|d7 }||7 }q|S )a  Return the value of the dot-delimited varname path in instance-data

    Split a dot-delimited jinja variable name path into components, walk the
    path components into the instance_data and look up a matching jinja
    variable name or cloud-init's underscore-delimited key aliases.

    :raises: ValueError when varname represents an invalid key name or path or
        if list-keys is provided by varname isn't a dict object.
     .z*instance-data '{key_path}' has no '{leaf}')ZleafZkey_pathz Undefined instance-data key '{}'N)splitKeyErrorr   
ValueErrorr	   )
r<   r=   r   r>   Zwalked_key_pathresponseZkey_path_partr9   msgkeyr"   r"   r#   (_find_instance_data_leaf_by_varname_path   s.     


rG   c              
   C   s  t t|jrtjntj t|j|j|j	|j
gsHtd t   dS zt|j|j|j}W n ttfk
rx   Y dS X |j	rdj	|j	d}t|d||jrdndd}|rt| d	S dS t|}|jr*t|dd
}zt|||j|jd}W n8 ttfk
r( } zt| W Y dS d}~X Y nX |jrbt|tsPtd|j dS dt| }t|tsxt !|}t| d	S )z3Handle calls to 'cloud-init query' as a subcommand.zDExpected one of the options: --all, --format, --list-keys or varname   z## template: jinja
{fmt})Zfmtzquery commandlineTF)payloadZ
payload_fnr   debugr   )Zinclude_key_aliasesr;   Nz+--list-keys provided but '%s' is not a dict
)"r   r0   rJ   r   DEBUGZWARNINGanyr>   r   r   r   r5   r$   Z
print_helpr:   r   r6   r7   r2   r3   r
   printr   rG   rB   rC   
isinstancedictr1   sortedkeysr   r   Z
json_dumps)nameargsr   rI   Zrendered_payloadrD   r=   r9   r"   r"   r#   handle_args  sn    
   

 
rU   c                  C   s   t  } ttt|   dS )z,Tool to query specific instance-data values.N)r$   sysexitrU   r   
parse_argsr    r"   r"   r#   mainC  s    rY   __main__)N) r   r   r,   rV   r4   r   Z	cloudinitr   r   r   Zcloudinit.cmd.develr   r   Z!cloudinit.handlers.jinja_templater   r	   r
   Zcloudinit.sourcesr   r   Z	getLoggerr0   r$   r)   rP   r:   r   boolrG   rU   rY   __name__r"   r"   r"   r#   <module>   s,   

XQ+=