o b/@sdZddlZddlZddlZddlZddlZddlZddlZddlm Z m Z m Z e dej ZddZdd Zd d Zdd d ZddZddZddZddZddZddZdS)a Low-level helpers for the SecureTransport bindings. These are Python functions that are not directly related to the high-level APIs but are necessary to get them to work. They include a whole bunch of low-level CoreFoundation messing about and memory management. The concerns in this module are almost entirely about trying to avoid memory leaks and providing appropriate and useful assistance to the higher-level code. N)SecurityCoreFoundationCFConsts;-----BEGIN CERTIFICATE----- (.*?) -----END CERTIFICATE-----cCsttj|t|S)zv Given a bytestring, create a CFData object from it. This CFData object must be CFReleased by the caller. )r CFDataCreatekCFAllocatorDefaultlen)Z bytestringr i/var/www/secure340b-portal/env/lib/python3.10/site-packages/urllib3/contrib/_securetransport/low_level.py_cf_data_from_bytess r cCsZt|}dd|D}dd|D}tj||}tj||}ttj|||tjtjS)zK Given a list of Python tuples, create an associated CFDictionary. cs|]}|dVqdS)rNr .0tr r r ,z-_cf_dictionary_from_tuples..csr )rNr r r r r r-r)rr CFTypeRefZCFDictionaryCreaterZkCFTypeDictionaryKeyCallBacksZkCFTypeDictionaryValueCallBacks)ZtuplesZdictionary_sizekeysvaluesZcf_keysZ cf_valuesr r r _cf_dictionary_from_tuples%srcCsnt|ttj}t|tj}|dur,td}t ||dtj}|s)t d|j }|dur5| d}|S)z Creates a Unicode string from a CFString object. Used entirely for error reporting. Yes, it annoys me quite a lot that this function is this complex. Niz'Error copying C string from CFStringRefutf-8) ctypescastPOINTERc_void_prZCFStringGetCStringPtrrZkCFStringEncodingUTF8create_string_bufferZCFStringGetCStringOSErrorvaluedecode)rZvalue_as_void_pstringbufferresultr r r _cf_string_to_unicode;s&  r"cCsX|dkrdSt|d}t|}t||dus|dkr!d|}|dur(tj}||)z[ Checks the return code and throws an exception if there is an error to report rNz OSStatus %s)rZSecCopyErrorMessageStringr"r CFReleasesslSSLError)errorZexception_classZcf_error_stringoutputr r r _assert_no_errorXs  r)cCs|dd}ddt|D}|stdttjdt tj }|s*tdz1|D]+}t |}|s:tdt tj|}t||sMtdt||t|q-W|Styjt|Y|Sw) z Given a bundle of certs in PEM format, turns them into a CFArray of certs that can be used to validate a cert chain. s  cSsg|] }t|dqS)r)base64 b64decodegroup)rmatchr r r usz(_cert_array_from_pem..zNo root certificates specifiedrzUnable to allocate memory!zUnable to build cert object!)replace _PEM_CERTS_REfinditerr%r&rCFArrayCreateMutablerrbyrefkCFTypeArrayCallBacksr rZSecCertificateCreateWithDatar$CFArrayAppendValue Exception)Z pem_bundleZ der_certsZ cert_arrayZ der_bytesZcertdatacertr r r _cert_array_from_pemms@          r9cCt}t||kS)z= Returns True if a given CFTypeRef is a certificate. )rZSecCertificateGetTypeIDr CFGetTypeIDitemexpectedr r r _is_certr?cCr:)z; Returns True if a given CFTypeRef is an identity. )rZSecIdentityGetTypeIDrr;r<r r r _is_identityr@rAc Cstd}t|ddd}t|dd}t}tj|| d}t }t |t ||ddt|}t|||fS)a This function creates a temporary Mac keychain that we can use to work with credentials. This keychain uses a one-time password and a temporary file to store the data. We expect to have one keychain per socket. The returned SecKeychainRef must be freed by the caller, including calling SecKeychainDelete. Returns a tuple of the SecKeychainRef and the path to the temporary directory that contains it. (NrF)osurandomr+ b16encodertempfilemkdtemppathjoinencoderZSecKeychainRefZSecKeychainCreaterrr4r))Z random_bytesfilenamepasswordZ tempdirectoryZ keychain_pathkeychainstatusr r r _temporary_keychains rPc Cs*g}g}d}t|d }|}Wdn1swYzhttj|t|}t}t|ddddd|t |}t |t |} t | D],} t|| } t | tj} t| rht| || qJt| rvt| || qJW|rt|t|||fS|rt|t|w)z Given a single file, loads all the trust objects from it into arrays and the keychain. Returns a tuple of lists: the first list is a list of identities, the second a list of certs. Nrbr)openreadrrrrZ CFArrayRefrZ SecItemImportrr4r)ZCFArrayGetCountrangeZCFArrayGetValueAtIndexrrr?ZCFRetainappendrAr$) rNrI certificates identitiesZ result_arrayfZ raw_filedataZfiledatar!Z result_countindexr=r r r _load_items_from_filesZ            rZc Gsg}g}dd|D}ze|D]}t||\}}||||q|sEt}t||dt|}t|||t | dt t j dtt j} t||D]} t | | qW| Wt||D]} t | qhSt||D]} t | qww)z Load certificates and maybe keys from a number of files. Has the end goal of returning a CFArray containing one SecIdentityRef, and then zero or more SecCertificateRef objects, suitable for use as a client certificate trust chain. css|]}|r|VqdSNr )rrIr r r r2rz*_load_client_cert_chain..r)rZextendrZSecIdentityRefZ SecIdentityCreateWithCertificaterr4r)rUrr$popr3rr5 itertoolschainr6) rNpathsrVrW file_pathZnew_identitiesZ new_certsZ new_identityrOZ trust_chainr=objr r r _load_client_cert_chainsB       rcr[)__doc__r+rr^rerDr%rGZbindingsrrrcompileDOTALLr1r rr"r)r9r?rArPrZrcr r r r s,   .( ;