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signers.cpython-310.pyc
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o .&�a�n � @ s d dl Z d dlZd dlZd dlZd dlZd dlZd dlmZmZ d dl m Z m Z d dl m Z d dl mZ d dl mZ d dlmZ d dlmZ G d d � d e�ZG d d � d e�Zd d� Zd dd�ZG dd� de�Zdd� Z d dd�Zdd� Z d dd�Z d d � Z dS )!� N)�six� OrderedDict)�create_request_object�prepare_request_dict)� UnknownSignatureVersionError)�UnknownClientMethodError)� UnsupportedSignatureVersionError)�datetime2timestamp)� fix_s3_hostc @ sz e Zd ZdZdd� Zedd� �Zedd� �Zedd � �Zdd d �Z ddd�Z dd� Z ddd�Z e Z ddd�Zd S )� RequestSignera0 An object to sign requests before they go out over the wire using one of the authentication mechanisms defined in ``auth.py``. This class fires two events scoped to a service and operation name: * choose-signer: Allows overriding the auth signer name. * before-sign: Allows mutating the request before signing. Together these events allow for customization of the request signing pipeline, including overrides, request path manipulation, and disabling signing per operation. :type service_id: botocore.model.ServiceId :param service_id: The service id for the service, e.g. ``S3`` :type region_name: string :param region_name: Name of the service region, e.g. ``us-east-1`` :type signing_name: string :param signing_name: Service signing name. This is usually the same as the service name, but can differ. E.g. ``emr`` vs. ``elasticmapreduce``. :type signature_version: string :param signature_version: Signature name like ``v4``. :type credentials: :py:class:`~botocore.credentials.Credentials` :param credentials: User credentials with which to sign requests. :type event_emitter: :py:class:`~botocore.hooks.BaseEventHooks` :param event_emitter: Extension mechanism to fire events. c C s. || _ || _|| _|| _|| _t�|�| _d S �N)� _region_name� _signing_name�_signature_version� _credentials� _service_id�weakref�proxy�_event_emitter)�self� service_id� region_name� signing_name�signature_version� credentials� event_emitter� r �2/usr/lib/python3/dist-packages/botocore/signers.py�__init__A s zRequestSigner.__init__c C � | j S r )r �r r r r r L � zRequestSigner.region_namec C r r )r r r r r r P r! z RequestSigner.signature_versionc C r r )r r r r r r T r! zRequestSigner.signing_nameNc K s | � ||�S r )�sign)r �operation_name�request�kwargsr r r �handlerX s zRequestSigner.handler�standardc C s |}|du r | j }|du r| j}| �|||j�}| jjd�| j�� |�||| j || |d� |t j kr�|||d�} |dur@|| d< |j� di �} |sT| � d�rT| d | d< | � d �r_| d | d < z | j d i | ��} W n t y� } z |d krzt|d ��| �d} ~ ww | �|� dS dS ) a< Sign a request before it goes out over the wire. :type operation_name: string :param operation_name: The name of the current operation, e.g. ``ListBuckets``. :type request: AWSRequest :param request: The request object to be sent over the wire. :type region_name: str :param region_name: The region to sign the request for. :type signing_type: str :param signing_type: The type of signing to perform. This can be one of three possible values: * 'standard' - This should be used for most requests. * 'presign-url' - This should be used when pre-signing a request. * 'presign-post' - This should be used when pre-signing an S3 post. :type expires_in: int :param expires_in: The number of seconds the presigned url is valid for. This parameter is only valid for signing type 'presign-url'. :type signing_name: str :param signing_name: The name to use for the service when signing. Nzbefore-sign.{0}.{1})r$ r r r �request_signerr# )r r r �expires�signing�regionr r r' �r r )r r �_choose_signer�contextr �emit�formatr � hyphenize�botocore�UNSIGNED�get�get_auth_instancer r �add_auth) r r# r$ r � signing_type� expires_inr �explicit_region_namer r% �signing_context�auth�er r r r" _ sR � �� � ����zRequestSigner.signc C s� ddd�}|� |d�}| j}|tjur |�|�s ||7 }| jjd�| j� � |�| j | j ||d�\}}|durF|}|tjurF|�|�sF||7 }|S )ai Allow setting the signature version via the choose-signer event. A value of `botocore.UNSIGNED` means no signing will be performed. :param operation_name: The operation to sign. :param signing_type: The type of signing that the signer is to be used for. :return: The signature version to sign with. z -presign-postz-query)� presign-post� presign-url� zchoose-signer.{0}.{1})r r r r. N) r4 r r2 r3 �endswithr �emit_until_responser0 r r1 r r ) r r# r7 r. �signing_type_suffix_map�suffixr r& �responser r r r- � s. � � � � �z RequestSigner._choose_signerc K s� |du r| j }tjj�|�}|du rt|d��d}| jdur#| j�� }||d< |jr<| j du r4tj � � �||d< ||d< |di |��}|S )a� Get an auth instance which can be used to sign a request using the given signature version. :type signing_name: string :param signing_name: Service signing name. This is usually the same as the service name, but can differ. E.g. ``emr`` vs. ``elasticmapreduce``. :type region_name: string :param region_name: Name of the service region, e.g. ``us-east-1`` :type signature_version: string :param signature_version: Signature name like ``v4``. :rtype: :py:class:`~botocore.auth.BaseSigner` :return: Auth instance to sign a request. Nr, r r � service_namer ) r r2 r; �AUTH_TYPE_MAPSr4 r r �get_frozen_credentials�REQUIRES_REGIONr � exceptions� NoRegionError)r r r r r% �cls�frozen_credentialsr; r r r r5 � s$ � z RequestSigner.get_auth_instance� c C s* t |�}| �|||d||� |�� |jS )a� Generates a presigned url :type request_dict: dict :param request_dict: The prepared request dictionary returned by ``botocore.awsrequest.prepare_request_dict()`` :type operation_name: str :param operation_name: The operation being signed. :type expires_in: int :param expires_in: The number of seconds the presigned url is valid for. By default it expires in an hour (3600 seconds) :type region_name: string :param region_name: The region name to sign the presigned url. :type signing_name: str :param signing_name: The name to use for the service when signing. :returns: The presigned url r> )r r" �prepare�url)r � request_dictr# r8 r r r$ r r r �generate_presigned_url� s �z$RequestSigner.generate_presigned_url�NN)Nr' NNr )rM NN)�__name__� __module__� __qualname__�__doc__r �propertyr r r r& r" r- r5 �get_authrQ r r r r r s( ! �H& �,�r c @ s> e Zd ZdZdd� Zd dd�Zdd� Z d d d �Zd d � ZdS )�CloudFrontSignera� A signer to create a signed CloudFront URL. First you create a cloudfront signer based on a normalized RSA signer:: import rsa def rsa_signer(message): private_key = open('private_key.pem', 'r').read() return rsa.sign( message, rsa.PrivateKey.load_pkcs1(private_key.encode('utf8')), 'SHA-1') # CloudFront requires SHA-1 hash cf_signer = CloudFrontSigner(key_id, rsa_signer) To sign with a canned policy:: signed_url = cf_signer.generate_signed_url( url, date_less_than=datetime(2015, 12, 1)) To sign with a custom policy:: signed_url = cf_signer.generate_signed_url(url, policy=my_policy) c C s || _ || _dS )a� Create a CloudFrontSigner. :type key_id: str :param key_id: The CloudFront Key Pair ID :type rsa_signer: callable :param rsa_signer: An RSA signer. Its only input parameter will be the message to be signed, and its output will be the signed content as a binary string. The hash algorithm needed by CloudFront is SHA-1. N)�key_id� rsa_signer)r rZ r[ r r r r 2 s zCloudFrontSigner.__init__Nc C s� |duo|du}|du o|du }|s|rd}t |��|dur$| �||�}t|tj�r/|�d�}|dur=dtt|�� g}n d| �|�� d� g}| � |�}|� d| �|�� d� d| j g� | � ||�S )a� Creates a signed CloudFront URL based on given parameters. :type url: str :param url: The URL of the protected object :type date_less_than: datetime :param date_less_than: The URL will expire after that date and time :type policy: str :param policy: The custom policy, possibly built by self.build_policy() :rtype: str :return: The signed URL. Nz=Need to provide either date_less_than or policy, but not both�utf8z Expires=%sz Policy=%sz Signature=%szKey-Pair-Id=%s)� ValueError� build_policy� isinstancer � text_type�encode�intr �_url_b64encode�decoder[ �extendrZ � _build_url) r rO �date_less_than�policy�both_args_supplied�neither_arg_suppliedr< �params� signaturer r r rQ A s$ � z'CloudFrontSigner.generate_presigned_urlc C s" d|v rdnd}|| d� |� S )N�?�&)�join)r �base_url� extra_params� separatorr r r rf e s zCloudFrontSigner._build_urlc C s� t t|��}tdd|ii�}|r d|vr|d7 }d|i|d< |r,t t|��}d|i|d< d|fd |fg}d t|�gi}tj|d d �S ) a0 A helper to build policy. :type resource: str :param resource: The URL or the stream filename of the protected object :type date_less_than: datetime :param date_less_than: The URL will expire after the time has passed :type date_greater_than: datetime :param date_greater_than: The URL will not be valid until this time :type ip_address: str :param ip_address: Use 'x.x.x.x' for an IP, or 'x.x.x.x/x' for a subnet :rtype: str :return: The policy in a compact string. � DateLessThanz AWS:EpochTime�/z/32z AWS:SourceIp� IpAddress�DateGreaterThan�Resource� Condition� Statement)�,�:)� separators)rb r r �json�dumps) r �resourcerg �date_greater_than� ip_address�moment� condition�ordered_payload� custom_policyr r r r^ i s z CloudFrontSigner.build_policyc C s" t �|��dd��dd��dd�S )N� +� -� =� _� /� ~)�base64� b64encode�replace)r �datar r r rc � s ��z CloudFrontSigner._url_b64encoderR ) rS rT rU rV r rQ rf r^ rc r r r r rY s $ � )rY c K � t | d< d S )N�generate_db_auth_token)r� ��class_attributesr% r r r �add_generate_db_auth_token� � r� c C sp |}|du r | j j}d|d�}ddi |dd�}d}d |||f } t|| � | jjd||d d d �} | t|�d� S ) a Generates an auth token used to connect to a db with IAM credentials. :type DBHostname: str :param DBHostname: The hostname of the database to connect to. :type Port: int :param Port: The port number the database is listening on. :type DBUsername: str :param DBUsername: The username to log in as. :type Region: str :param Region: The region the database is in. If None, the client region will be used. :return: A presigned url which can be used as an auth token. N�connect)�Action�DBUserrt r? �GET)�url_path� query_string�headers�body�methodzhttps://z%s%s:%si� zrds-db)r# rP r r8 r )�metar r �_request_signerrQ �len) r � DBHostname�Port� DBUsername�Regionr+ rk rP �scheme� endpoint_url� presigned_urlr r r r� � s( �� �r� c @ s$ e Zd Zdd� Z ddd�ZdS )�S3PostPresignerc C s || _ d S r )r� )r r( r r r r � s zS3PostPresigner.__init__NrM c C s� |du ri }|du r g }i }t j �� }|t j|d� }|�tjj�|d< g |d< |D ] } |d �| � q*t|�} || j d< || j d< | j � d| |d� | j |d �S ) a� Generates the url and the form fields used for a presigned s3 post :type request_dict: dict :param request_dict: The prepared request dictionary returned by ``botocore.awsrequest.prepare_request_dict()`` :type fields: dict :param fields: A dictionary of prefilled form fields to build on top of. :type conditions: list :param conditions: A list of conditions to include in the policy. Each element can be either a list or a structure. For example: [ {"acl": "public-read"}, {"bucket": "mybucket"}, ["starts-with", "$key", "mykey"] ] :type expires_in: int :param expires_in: The number of seconds the presigned post is valid for. :type region_name: string :param region_name: The region name to sign the presigned post to. :rtype: dict :returns: A dictionary with two elements: ``url`` and ``fields``. Url is the url to post to. Fields is a dictionary filled with the form fields and respective values to use when submitting the post. For example: {'url': 'https://mybucket.s3.amazonaws.com 'fields': {'acl': 'public-read', 'key': 'mykey', 'signature': 'mysignature', 'policy': 'mybase64 encoded policy'} } N)�seconds� expiration� conditionszs3-presign-post-fieldszs3-presign-post-policy� PutObjectr= )rO �fields) �datetime�utcnow� timedelta�strftimer2 r; �ISO8601�appendr r. r� r" rO ) r rP r� r� r8 r rh � datetime_now� expire_dater� r$ r r r �generate_presigned_post� s$ * � z'S3PostPresigner.generate_presigned_post)NNrM N)rS rT rU r r� r r r r r� � s �r� c K r� )NrQ )rQ r� r r r �add_generate_presigned_url r� r� rM c C s� |}|}|du r i }|}|}dt | �d�} | j} | j} z| j| } W n ty. t|d��w | jj�| �} | � || | �}| � || �}|durK||d< t || jj | d� | j ||| d�S )ax Generate a presigned url given a client, its method, and arguments :type ClientMethod: string :param ClientMethod: The client method to presign for :type Params: dict :param Params: The parameters normally passed to ``ClientMethod``. :type ExpiresIn: int :param ExpiresIn: The number of seconds the presigned url is valid for. By default it expires in an hour (3600 seconds) :type HttpMethod: string :param HttpMethod: The http method to use on the generated url. By default, the http method is whatever is used in the method's model. :returns: The presigned url NT��is_presign_request�use_global_endpoint)� method_namer� �r� r. )rP r8 r# )�_should_use_global_endpointr� � _serializer�_PY_TO_OP_NAME�KeyErrorr r� � service_model�operation_model�_emit_api_params�serialize_to_requestr r� rQ )r � ClientMethod�Params� ExpiresIn� HttpMethod� client_methodrk r8 � http_methodr. r( � serializerr# r� rP r r r rQ s@ � ��� ��rQ c K r� )Nr� )r� r� r r r �add_generate_presigned_post_ r� r� c C s� |}|}|}|} |} |du ri }n|� � }| du rg } t| j�} | j} | jj�d�} | �d|i| �}t|| jj dt | �d�d� | � d|i� |� d�r\| � d d |dt d� � g� n| � d |i� ||d < | j||| | d �S ) a� Builds the url and the form fields used for a presigned s3 post :type Bucket: string :param Bucket: The name of the bucket to presign the post to. Note that bucket related conditions should not be included in the ``conditions`` parameter. :type Key: string :param Key: Key name, optionally add ${filename} to the end to attach the submitted filename. Note that key related conditions and fields are filled out for you and should not be included in the ``Fields`` or ``Conditions`` parameter. :type Fields: dict :param Fields: A dictionary of prefilled form fields to build on top of. Elements that may be included are acl, Cache-Control, Content-Type, Content-Disposition, Content-Encoding, Expires, success_action_redirect, redirect, success_action_status, and x-amz-meta-. Note that if a particular element is included in the fields dictionary it will not be automatically added to the conditions list. You must specify a condition for the element as well. :type Conditions: list :param Conditions: A list of conditions to include in the policy. Each element can be either a list or a structure. For example: [ {"acl": "public-read"}, ["content-length-range", 2, 5], ["starts-with", "$success_action_redirect", ""] ] Conditions that are included may pertain to acl, content-length-range, Cache-Control, Content-Type, Content-Disposition, Content-Encoding, Expires, success_action_redirect, redirect, success_action_status, and/or x-amz-meta-. Note that if you include a condition, you must specify the a valid value in the fields dictionary as well. A value will not be added automatically to the fields dictionary based on the conditions. :type ExpiresIn: int :param ExpiresIn: The number of seconds the presigned post is valid for. :rtype: dict :returns: A dictionary with two elements: ``url`` and ``fields``. Url is the url to post to. Fields is a dictionary filled with the form fields and respective values to use when submitting the post. For example: {'url': 'https://mybucket.s3.amazonaws.com 'fields': {'acl': 'public-read', 'key': 'mykey', 'signature': 'mysignature', 'policy': 'mybase64 encoded policy'} } N� CreateBucket�BucketTr� r� �bucketz ${filename}z starts-withz$key�key)rP r� r� r8 )�copyr� r� r� r� r� r� r� r r� r� r� r@ r� r� )r r� �Key�Fields� Conditionsr� r� r� r� r� r8 �post_presignerr� r� rP r r r r� c sB @ ���� �r� c C sR | j jdkrdS | j jj}|r'|�dd�rdS |�d�dkr'| j jjdkr'dS dS )N�awsF�use_dualstack_endpoint�us_east_1_regional_endpoint�regionalz us-east-1T)r� � partition�config�s3r4 r )�client� s3_configr r r r� � s r� r )NrM N)NNrM ) r� r r} r� r2 � botocore.auth�botocore.compatr r �botocore.awsrequestr r �botocore.exceptionsr r r �botocore.utilsr r �objectr rY r� r� r� r� rQ r� r� r� r r r r �<module> s8 | 3L �? � u