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� =OXc @ s� d Z d d l m Z d d l Z d d l Z d d l Z d d l Z d d l Z d d l Z d d l m Z m Z m Z m Z d d l m Z m Z m Z m Z m Z d d l m Z e d � Z e r� e n d Z e r� e n d Z e d � Z d d � Z d � Z d � Z d � Z d � Z d � Z! d � Z" d � Z# d � Z$ d � Z% i a& d a' e j( � a) d � Z* e d � Z+ d e, f d � � YZ- e- � Z. d � Z/ d � Z0 d � Z1 d e, f d � � YZ2 d � Z3 d S( s0 Useful functions used by the rest of paramiko. i����( t generatorsN( t DEBUGt zero_bytet xfffffffft max_byte( t PY2t longt byte_chrt byte_ordt b( t SSHConfigc C s t d � } d } | rJ t | � d k rJ t | d � d k rJ d } n t | � d r� t } | ro t } n | d t | � d | } n xI t d t | � d � D]/ } | d >t j d | | | d !� d } q� W| r| t d � d t | � >8} n | S( sP turns a normalized byte string into a long-int (adapted from Crypto.Util.number)i i� i i i s >Ii ( R t lenR R R t ranget structt unpack( t st always_positivet outt negativet fillert i( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt inflate_long% s / -!i i� c C sI t � } t | � } x@ | d k rW | d k rW t j d | t @� | } | d L} q Wxu t | � D]F } | d k r� | d t k r� Pn | d k re | d t k re Pqe qe Wd } | d k r� t } n t } | | d } | rE| d k rt | d � d k rt | } n | d k rEt | d � d k rEt | } qEn | S( sP turns a long-int into a normalized byte string (adapted from Crypto.Util.number)i i����s >Ii i i� ( i ( t bytesR R t packR t enumeratet deflate_zerot deflate_ffR R R ( t nt add_sign_paddingR R ( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt deflate_long< s* " "t c C s� d } g } xB t | � | d k rP | j t | | | d !� � | d 7} q W| t | � k r} | j t | | � � n g | D] } | | ^ q� S( Ni i ( R t appendt format_binary_line( t datat prefixt xR ( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt format_binaryZ s c C sr d j g | D] } d t | � ^ q � } d j g | D]" } d | t | � d d ^ q9 � } d | | f S( Nt s %02XR s .%c..i? i_ s %-50s %s( t joinR ( R! t ct leftt right( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyR e s ,8c C sp t d � } x] | D]U } t | � } d | k o< d k n rT | t | � 7} q | t d | � 7} q W| S( NR i i s %%%02X( R R R ( R R R' R ( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt safe_stringk s c C s� y | j � SWnv t k r� t | t � } t | d � } | d k rM d St | � d } x" | d @s� | d K} | d 8} q` W| SXd S( Ni i i i� ( t bit_lengtht AttributeErrorR t FalseR R ( R t normt hbytet bitlen( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyR+ v s c C s% d j t j t j � � � j d � S( NR s ( R& t tracebackt format_exceptiont syst exc_infot split( ( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt tb_strings� s c C s� t � } t � } t | � d k r1 | d } n x� | d k r� | � } t | � d k rk | j | � n | j t | � � | j | � | j � } t | t | � � } | | | 7} | | 8} q4 W| S( s Given a password, passphrase, or other human-source key, scramble it through a secure hash into some keyworthy bytes. This specific algorithm is used for encrypting/decrypting private key files. :param function hash_alg: A function which creates a new hash object, such as ``hashlib.sha256``. :param salt: data to salt the hash with. :type salt: byte string :param str key: human-entered password or passphrase. :param int nbytes: number of bytes to generate. :return: Key data `str` i i ( R R t updateR t digestt min( t hash_algt saltt keyt nbytest keydataR8 t hash_objt size( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt generate_key_bytes� s c C s d d l m } | | � S( s� Read a file of known SSH host keys, in the format used by openssh, and return a compound dict of ``hostname -> keytype ->`` `PKey <paramiko.pkey.PKey>`. The hostname may be an IP address or DNS name. The keytype will be either ``"ssh-rsa"`` or ``"ssh-dss"``. This type of file unfortunately doesn't exist on Windows, but on posix, it will usually be stored in ``os.path.expanduser("~/.ssh/known_hosts")``. Since 1.5.3, this is just a wrapper around `.HostKeys`. :param str filename: name of the file to read host keys from :return: nested dict of `.PKey` objects, indexed by hostname and then keytype i����( t HostKeys( t paramiko.hostkeysRB ( t filenameRB ( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt load_host_keys� s c C s t � } | j | � | S( sM Provided only as a backward-compatible wrapper around `.SSHConfig`. ( R t parse( t file_objt config( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt parse_ssh_config� s c C s | j | � S( sM Provided only as a backward-compatible wrapper around `.SSHConfig`. ( t lookup( t hostnameRH ( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt lookup_ssh_host_config� s c C s� d d | } } } d d | } } } xY | d k r� | | } | | | | } } | | | | } } | | | | } } q+ W| d k r� | | 7} n | S( Ni i ( ( R# t mt u1t u2t u3t v1t v2t v3t q( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt mod_inverse� s c C sk t t j � � } y t | SWnF t k rf t j � z t d 7a t } t | <Wd t j � X| SXd S( Ni ( t idt threadingt currentThreadt _g_thread_idst KeyErrort _g_thread_lockt acquiret _g_thread_countert release( t tidt ret( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt get_thread_id� s c C s} t j d � } t | j � d k r( d S| j | � t | d � } t j | � } | j t j d d � � | j | � d S( sG send paramiko logs to a logfile, if they're not already going somewheret paramikoi Nt wsT %(levelname)-.3s [%(asctime)s.%(msecs)03d] thr=%(_threadid)-3d %(name)s: %(message)ss %Y%m%d-%H:%M:%S( t loggingt getLoggerR t handlerst setLevelt opent StreamHandlert setFormattert Formattert addHandler( RD t levelt lt ft lh( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt log_to_file� s t PFilterc B s e Z d � Z RS( c C s t � | _ t S( N( Ra t _threadidt True( t selft record( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt filter� s ( t __name__t __module__Rw ( ( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyRr � s c C s t j | � } | j t � | S( N( Rd Re t addFiltert _pfilter( t nameRn ( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt get_logger s c C sJ xC t rE y | � SWq t k rA } | j t j k rB � qB q Xq Wd S( s6 Retries function until it doesn't raise an EINTR errorN( Rt t EnvironmentErrort errnot EINTR( t functiont e( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt retry_on_signal s c C sw t | � t | � k r t Sd } xH t r1 t n t t | � � D]( } | t | | � t | | � AO} qA W| d k S( Ni ( R R- R t xrangeR R ( t aR t resR ( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt constant_time_bytes_eq s %&t ClosingContextManagerc B s e Z d � Z d � Z RS( c C s | S( N( ( Ru ( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt __enter__ s c C s | j � d S( N( t close( Ru t typet valueR1 ( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt __exit__! s ( Rx Ry R� R� ( ( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyR� s c C s t | t | | � � S( N( t maxR9 ( t minimumt valt maximum( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt clamp_value% s (4 t __doc__t __future__R R R3 R R1 RW Rd t paramiko.commonR R R R t paramiko.py3compatR R R R R t paramiko.configR R- R R R Rt R R$ R R* R+ R6 RA RE RI RL RU RY R] t LockR[ Ra Rq t objectRr R{ R} R� R� R� R� ( ( ( s1 /usr/lib/python2.7/site-packages/paramiko/util.pyt <module> sH "(
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