Revert "Add gsutil 4.13 to telemetry/third_party"

tools/telemetry/third_party/gsutil/third_party/pyasn1-modules/tools/ocspclient.py

-#!/usr/bin/python
-#
-from pyasn1.codec.der import decoder, encoder
-from pyasn1_modules import rfc2560, rfc2459, pem
-from pyasn1.type import univ
-import sys, hashlib
-try:
-  import urllib2
-except ImportError:
-  import urllib.request as urllib2
-
-sha1oid = univ.ObjectIdentifier((1, 3, 14, 3, 2, 26))
-
-class ValueOnlyBitStringEncoder(encoder.encoder.BitStringEncoder):
-    # These methods just do not encode tag and length fields of TLV
-    def encodeTag(self, *args): return ''
-    def encodeLength(self, *args): return ''
-    def encodeValue(*args):
-        substrate, isConstructed = encoder.encoder.BitStringEncoder.encodeValue(*args)
-        # OCSP-specific hack follows: cut off the "unused bit count"
-        # encoded bit-string value.
-        return substrate[1:], isConstructed
-
-    def __call__(self, bitStringValue):
-        return self.encode(None, bitStringValue, defMode=1, maxChunkSize=0)
-
-valueOnlyBitStringEncoder = ValueOnlyBitStringEncoder()
-
-def mkOcspRequest(issuerCert, userCert):
-    issuerTbsCertificate = issuerCert.getComponentByName('tbsCertificate')
-    issuerSubject = issuerTbsCertificate.getComponentByName('subject')
-    
-    userTbsCertificate = userCert.getComponentByName('tbsCertificate')
-    userIssuer = userTbsCertificate.getComponentByName('issuer')
-
-    assert issuerSubject == userIssuer, '%s\n%s' % (
-        issuerSubject.prettyPrint(), userIssuer.prettyPrint()
-        )
-
-    userIssuerHash = hashlib.sha1(
-        encoder.encode(userIssuer)
-        ).digest()
-    
-    issuerSubjectPublicKey = issuerTbsCertificate.getComponentByName('subjectPublicKeyInfo').getComponentByName('subjectPublicKey')
-    
-    issuerKeyHash =  hashlib.sha1(
-        valueOnlyBitStringEncoder(issuerSubjectPublicKey)
-        ).digest()
-    
-    userSerialNumber = userTbsCertificate.getComponentByName('serialNumber')
-
-    # Build request object
-
-    request = rfc2560.Request()
-    
-    reqCert = request.setComponentByName('reqCert').getComponentByName('reqCert')
-    
-    hashAlgorithm = reqCert.setComponentByName('hashAlgorithm').getComponentByName('hashAlgorithm')
-    hashAlgorithm.setComponentByName('algorithm', sha1oid)
-    
-    reqCert.setComponentByName('issuerNameHash', userIssuerHash)
-    reqCert.setComponentByName('issuerKeyHash', issuerKeyHash)
-    reqCert.setComponentByName('serialNumber', userSerialNumber)
-
-    ocspRequest = rfc2560.OCSPRequest()
-    
-    tbsRequest = ocspRequest.setComponentByName('tbsRequest').getComponentByName('tbsRequest')
-    tbsRequest.setComponentByName('version', 'v1')
-    
-    requestList = tbsRequest.setComponentByName('requestList').getComponentByName('requestList')
-    requestList.setComponentByPosition(0, request)
-    
-    return ocspRequest
-
-def parseOcspResponse(ocspResponse):
-    responseStatus = ocspResponse.getComponentByName('responseStatus')
-    assert responseStatus == rfc2560.OCSPResponseStatus('successful'), responseStatus.prettyPrint()    
-    responseBytes = ocspResponse.getComponentByName('responseBytes')
-    responseType = responseBytes.getComponentByName('responseType')
-    assert responseType == id_pkix_ocsp_basic, responseType.prettyPrint()
-    
-    response = responseBytes.getComponentByName('response')
-
-    basicOCSPResponse, _ = decoder.decode(
-        response, asn1Spec=rfc2560.BasicOCSPResponse()
-        )
-    
-    tbsResponseData = basicOCSPResponse.getComponentByName('tbsResponseData')
-
-    response0 = tbsResponseData.getComponentByName('responses').getComponentByPosition(0)
-    
-    return (
-        tbsResponseData.getComponentByName('producedAt'),
-        response0.getComponentByName('certID'),
-        response0.getComponentByName('certStatus').getName(),
-        response0.getComponentByName('thisUpdate')
-        )
-
-if len(sys.argv) != 2:
-    print("""Usage:
-$ cat CACertificate.pem userCertificate.pem | %s <ocsp-responder-url>""" % sys.argv[0])
-    sys.exit(-1)
-else:
-    ocspUrl = sys.argv[1]
-
-# Parse CA and user certificates
-
-issuerCert, _ = decoder.decode(
-    pem.readPemBlocksFromFile(
-        sys.stdin, ('-----BEGIN CERTIFICATE-----', '-----END CERTIFICATE-----')
-    )[1],
-    asn1Spec=rfc2459.Certificate()
-    )
-userCert, _ = decoder.decode(
-    pem.readPemBlocksFromFile(
-        sys.stdin, ('-----BEGIN CERTIFICATE-----', '-----END CERTIFICATE-----')
-    )[1],
-    asn1Spec=rfc2459.Certificate()
-    )
-
-# Build OCSP request
-    
-ocspReq = mkOcspRequest(issuerCert, userCert)
-
-# Use HTTP POST to get response (see Appendix A of RFC 2560)
-# In case you need proxies, set the http_proxy env variable
-
-httpReq = urllib2.Request(
-    ocspUrl,
-    encoder.encode(ocspReq),
-    { 'Content-Type': 'application/ocsp-request' }
-    )
-httpRsp = urllib2.urlopen(httpReq).read()
-
-# Process OCSP response
-    
-ocspRsp, _ = decoder.decode(httpRsp, asn1Spec=rfc2560.OCSPResponse())
-
-producedAt, certId, certStatus, thisUpdate = parseOcspResponse(ocspRsp)
-
-print('Certificate ID %s is %s at %s till %s\n' % (
-       certId.getComponentByName('serialNumber'),
-       certStatus,
-       producedAt,
-       thisUpdate))