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��ReF � @ s d d l m Z d d l Z d d l m Z m Z m Z d d l m Z m Z m Z d d l m Z d d l m Z e r� d d l m Z m Z m Z m Z m Z d d l m Z e r� d d l m Z n d d l m Z d Z d d d g Z Gd d � d e � Z Gd d � d e � Z d S)� )�absolute_importN)� iteritems�iterkeys� itervalues)� HashMismatch� HashMissing�InstallationError)� read_chunks)�MYPY_CHECK_RUNNING)�Dict�List�BinaryIO�NoReturn�Iterator)�PY3)�_Hash)�_hash�sha256�sha384�sha512c @ s� e Z d Z d Z d d d � Z d d � Z e d d � � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d S)�HasheszaA wrapper that builds multiple hashes at once and checks them against known-good values Nc C s | d k r i n | | _ d S)zo :param hashes: A dict of algorithm names pointing to lists of allowed hex digests N)�_allowed)�self�hashes� r ��/builddir/build/BUILDROOT/alt-python35-pip-20.2.4-5.el8.x86_64/opt/alt/python35/lib/python3.5/site-packages/pip/_internal/utils/hashes.py�__init__) s zHashes.__init__c s� t | t � s t S| s � S� s' | Si } xO t | j � D]> \ � } � � j k r[ q= � � f d d � | D� | � <q= Wt | � S)Nc s) g | ] } | � j � k r | � q Sr )r )�.0�v)�algr r r � <listcomp>B s z"Hashes.__and__.<locals>.<listcomp>)� isinstancer �NotImplementedr r )r �other�new�valuesr )r r r �__and__1 s $zHashes.__and__c C s t d d � | j j � D� � S)Nc s s | ] } t | � Vq d S)N)�len)r �digestsr r r � <genexpr>H s z&Hashes.digest_count.<locals>.<genexpr>)�sumr r% )r r r r � digest_countE s zHashes.digest_countc C s | | j j | g � k S)z/Return whether the given hex digest is allowed.)r �get)r � hash_name� hex_digestr r r �is_hash_allowedJ s zHashes.is_hash_allowedc C s� i } x^ t | j � D]M } y t j | � | | <Wq t t f k rb t d j | � � � Yq Xq Wx2 | D]* } x! t | � D] } | j | � q� Wqn Wx7 t | � D]) \ } } | j � | j | k r� d Sq� W| j | � d S)z�Check good hashes against ones built from iterable of chunks of data. Raise HashMismatch if none match. zUnknown hash name: {}N) r r �hashlibr$ � ValueError� TypeErrorr �formatr �updater � hexdigest�_raise)r �chunks�gotsr- �chunk�hash�gotr r r �check_against_chunksS s zHashes.check_against_chunksc C s t | j | � � d S)N)r r )r r8 r r r r6 m s z Hashes._raisec C s | j t | � � S)zaCheck good hashes against a file-like object Raise HashMismatch if none match. )r< r )r �filer r r �check_against_fileq s zHashes.check_against_filec C s* t | d � � } | j | � SWd QRXd S)N�rb)�openr> )r �pathr= r r r �check_against_pathz s zHashes.check_against_pathc C s t | j � S)z,Return whether I know any known-good hashes.)�boolr )r r r r � __nonzero__ s zHashes.__nonzero__c C s | j � S)N)rD )r r r r �__bool__� s zHashes.__bool__)�__name__� __module__� __qualname__�__doc__r r& �propertyr+ r/ r< r6 r> rB rD rE r r r r r $ s r c s4 e Z d Z d Z � f d d � Z d d � Z � S)� MissingHashesz�A workalike for Hashes used when we're missing a hash for a requirement It computes the actual hash of the requirement and raises a HashMissing exception showing it to the user. c s# t t | � j d t g i � d S)z!Don't offer the ``hashes`` kwarg.r N)�superrK r � FAVORITE_HASH)r )� __class__r r r � s zMissingHashes.__init__c C s t | t j � � � d S)N)r rM r5 )r r8 r r r r6 � s zMissingHashes._raise)rF rG rH rI r r6 r r )rN r rK � s rK ) � __future__r r0 Zpip._vendor.sixr r r �pip._internal.exceptionsr r r �pip._internal.utils.miscr �pip._internal.utils.typingr �typingr r r r r r r r rM � STRONG_HASHES�objectr rK r r r r �<module> s (e
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