U .bAp@sddlZddlZddlZddlZddlZddlZddlmZmZddl m Z ddl m Z m Z mZddlmZddlmZGdddZGd d d Zd d Zdd dZGdddZddZdddZddZdddZddZdS)N)create_request_objectprepare_request_dict) OrderedDict)UnknownClientMethodErrorUnknownSignatureVersionError UnsupportedSignatureVersionError)datetime2timestamp) fix_s3_hostc@speZdZdZddZeddZeddZedd Zdd d Z dddZ ddZ dddZ e Z dddZd 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. cCs.||_||_||_||_||_t||_dSN) _region_name _signing_name_signature_version _credentials _service_idweakrefproxy_event_emitter)selfZ service_id region_name signing_namesignature_version credentialsZ event_emitterr4/tmp/pip-unpacked-wheel-7df6wvge/botocore/signers.py__init__Ds zRequestSigner.__init__cCs|jSr )r rrrrrVszRequestSigner.region_namecCs|jSr )rrrrrrZszRequestSigner.signature_versioncCs|jSr )r rrrrr^szRequestSigner.signing_nameNcKs |||Sr )sign)roperation_namerequestkwargsrrrhandlerbszRequestSigner.handlerstandardc Cs|}|dkr|j}|dkr |j}||||j}|jjd|j||||j|||d|t j kr|||d} |dk r|| d<|j di} |s| dr| d| d<| d r| d | d <z|j f| } Wn<t k r } z|d krt|d n| W5d} ~ XYnX| |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.{}.{})rrrrrequest_signerr)rrrexpiresZsigningregionrrr"r)r r _choose_signercontextremitformatr hyphenizebotocoreUNSIGNEDgetget_auth_instancerrZadd_auth) rrrr signing_type expires_inrZexplicit_region_namerr Zsigning_contextautherrrrisV#    zRequestSigner.signc Csddd}||d}|j}|tjk r8||s8||7}|jjd|j ||j |j ||d\}}|dk r|}|tjk r||s||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-urlzchoose-signer.{}.{})rrrr(N) r.rr,r-endswithrZemit_until_responser*rr+r r ) rrr0r(Zsigning_type_suffix_mapsuffixrr!responserrrr's8   zRequestSigner._choose_signercKs|dkr|j}tjj|}|dkr.t|dd}|jdk rF|j}||d<|jrx|j dkrhtj ||d<||d<|f|}|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&rrZ service_name) rr,r2ZAUTH_TYPE_MAPSr.rrZget_frozen_credentialsZREQUIRES_REGIONr exceptionsZ NoRegionError)rrrrr clsZfrozen_credentialsr2rrrr/s$     zRequestSigner.get_auth_instancecCs*t|}||||d||||jS)aGenerates 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 r5)rrprepareurl)r request_dictrr1rrrrrrgenerate_presigned_urls z$RequestSigner.generate_presigned_url)NN)Nr"NN)N)r<NN)__name__ __module__ __qualname____doc__rpropertyrrrr!rr'r/Zget_authr@rrrrr !s,"     T. .r c@s<eZdZdZddZd ddZddZdd d Zd d ZdS)CloudFrontSigneraA 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) cCs||_||_dS)aCreate 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)rrGrHrrrr]s zCloudFrontSigner.__init__Nc Cs|dk o|dk }|dko|dk}|s(|r4d}t||dk rH|||}t|tr\|d}|dk rxdtt|g}nd||dg}| |}| d||dd|j g| ||S)aCreates 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 bothutf8z Expires=%sz Policy=%sz Signature=z Key-Pair-Id=) ValueError build_policy isinstancestrencodeintr_url_b64encodedecoderHextendrG _build_url) rr>date_less_thanpolicyZboth_args_suppliedZneither_arg_suppliedr3params signaturerrrr@ls&     z'CloudFrontSigner.generate_presigned_urlcCs"d|kr dnd}||d|S)N?&)join)rbase_urlZ extra_params separatorrrrrSszCloudFrontSigner._build_urlc Cstt|}tdd|ii}|rfields) datetimeutcnow timedeltastrftimer,r2ZISO8601appendrr(r|rr>) rr?rrr1rrUZ datetime_nowZ expire_datergrrrrgenerate_presigned_post s*/   z'S3PostPresigner.generate_presigned_post)NNr<N)rArBrCrrrrrrrs rcKs t|d<dS)Nr@)r@rsrrradd_generate_presigned_urlWsrr<cCs|}|}|dkri}|}|}dt|d} |j} |j} z|j|} Wntk rbt|dYnX|jj| } | || | }| || }|dk r||d<t ||jj | d| j ||| dS)axGenerate 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 NTZis_presign_requestZuse_global_endpoint) method_namerzrr()r?r1r)_should_use_global_endpointr| _serializerZ_PY_TO_OP_NAMEKeyErrorrr{ service_modeloperation_modelZ_emit_api_paramsserialize_to_requestrrr@)rZ ClientMethodZParams ExpiresInZ HttpMethodZ client_methodrVr1Z http_methodr(r# serializerrrr?rrrr@[s< r@cKs t|d<dS)Nr)rrsrrradd_generate_presigned_postsrcCs|}|}|}|} |} |dkr"i}n|}| dkr6g} t|j} |j} |jjd} | d|i| }t||jj dt |dd| d|i| dr| d d |dt d gn| 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'} } NZ CreateBucketBucketTrrbucketz ${filename}z starts-withz$keykey)r?rrr1)copyrr|rr{rrrrrrrr7r}r)rrZKeyZFieldsZ Conditionsrrrrrr1Zpost_presignerrrr?rrrrsFA    rcCsR|jjdkrdS|jjj}|rN|ddr.dS|ddkrN|jjjdkrNdSdS)NZawsFZuse_dualstack_endpointZus_east_1_regional_endpointZregionalz us-east-1T)r{ partitionconfigZs3r.r)clientZ s3_configrrrrs     r)N)Nr<N)NNr<)rnrrcrr,Z botocore.authZbotocore.awsrequestrrZbotocore.compatrZbotocore.exceptionsrrrZbotocore.utilsrr r rFrtrrrrr@rrrrrrr s:   & 6R A z