wbond | e91513e | 2015-06-03 14:52:18 -0400 | [diff] [blame^] | 1 | # coding: utf-8 |
| 2 | from __future__ import unicode_literals |
| 3 | from __future__ import absolute_import |
| 4 | |
| 5 | from .algos import DigestAlgorithm, SignedDigestAlgorithm |
| 6 | from .core import ( |
| 7 | Boolean, |
| 8 | Choice, |
| 9 | Enumerated, |
| 10 | GeneralizedTime, |
| 11 | IA5String, |
| 12 | Integer, |
| 13 | Null, |
| 14 | ObjectIdentifier, |
| 15 | OctetBitString, |
| 16 | OctetString, |
| 17 | Sequence, |
| 18 | SequenceOf, |
| 19 | ) |
| 20 | from .crl import AuthorityInfoAccessSyntax, CRLReason |
| 21 | from .keys import PublicKeyAlgorithm |
| 22 | from .x509 import Certificate, GeneralName, GeneralNames, Name |
| 23 | |
| 24 | |
| 25 | |
| 26 | # The structures in this file are taken from https://tools.ietf.org/html/rfc6960 |
| 27 | |
| 28 | |
| 29 | class ResponseType(ObjectIdentifier): |
| 30 | _map = { |
| 31 | '1.3.6.1.5.5.7.48.1.1': 'basic_ocsp_response', |
| 32 | } |
| 33 | |
| 34 | |
| 35 | class AcceptableResponses(SequenceOf): |
| 36 | _child_spec = ResponseType |
| 37 | |
| 38 | |
| 39 | class ServiceLocator(Sequence): |
| 40 | _fields = [ |
| 41 | ('issuer', Name), |
| 42 | ('locator', AuthorityInfoAccessSyntax), |
| 43 | ] |
| 44 | |
| 45 | |
| 46 | class PreferredSignatureAlgorithm(Sequence): |
| 47 | _fields = [ |
| 48 | ('sig_identifier', SignedDigestAlgorithm), |
| 49 | ('cert_identifier', PublicKeyAlgorithm, {'optional': True}), |
| 50 | ] |
| 51 | |
| 52 | |
| 53 | class PreferredSignatureAlgorithms(SequenceOf): |
| 54 | _child_spec = PreferredSignatureAlgorithm |
| 55 | |
| 56 | |
| 57 | class RequestExtensionId(ObjectIdentifier): |
| 58 | _map = { |
| 59 | '1.3.6.1.5.5.7.48.1.7': 'ocsp_service_locator', |
| 60 | } |
| 61 | |
| 62 | |
| 63 | class RequestExtension(Sequence): |
| 64 | _fields = [ |
| 65 | ('extn_id', RequestExtensionId), |
| 66 | ('critical', Boolean, {'default': False}), |
| 67 | ('extn_value', OctetString), |
| 68 | ] |
| 69 | |
| 70 | _oid_pair = ('extn_id', 'extn_value') |
| 71 | _oid_specs = { |
| 72 | 'ocsp_service_locator': ServiceLocator, |
| 73 | } |
| 74 | |
| 75 | |
| 76 | class RequestExtensions(SequenceOf): |
| 77 | _child_spec = RequestExtension |
| 78 | |
| 79 | |
| 80 | class TBSRequestExtensionId(ObjectIdentifier): |
| 81 | _map = { |
| 82 | '1.3.6.1.5.5.7.48.1.2': 'ocsp_noonce', |
| 83 | '1.3.6.1.5.5.7.48.1.4': 'ocsp_response', |
| 84 | '1.3.6.1.5.5.7.48.1.8': 'ocsp_preferred_signature_algorithms', |
| 85 | } |
| 86 | |
| 87 | |
| 88 | class TBSRequestExtension(Sequence): |
| 89 | _fields = [ |
| 90 | ('extn_id', TBSRequestExtensionId), |
| 91 | ('critical', Boolean, {'default': False}), |
| 92 | ('extn_value', OctetString), |
| 93 | ] |
| 94 | |
| 95 | _oid_pair = ('extn_id', 'extn_value') |
| 96 | _oid_specs = { |
| 97 | 'ocsp_noonce': OctetString, |
| 98 | 'ocsp_response': AcceptableResponses, |
| 99 | 'ocsp_preferred_signature_algorithms': PreferredSignatureAlgorithms, |
| 100 | } |
| 101 | |
| 102 | |
| 103 | class TBSRequestExtensions(SequenceOf): |
| 104 | _child_spec = TBSRequestExtension |
| 105 | |
| 106 | |
| 107 | class ResponseDataExtensionId(ObjectIdentifier): |
| 108 | _map = { |
| 109 | '1.3.6.1.5.5.7.48.1.2': 'ocsp_noonce', |
| 110 | '1.3.6.1.5.5.7.48.1.9': 'ocsp_extended_revoke', |
| 111 | } |
| 112 | |
| 113 | |
| 114 | class ResponseDataExtension(Sequence): |
| 115 | _fields = [ |
| 116 | ('extn_id', ResponseDataExtensionId), |
| 117 | ('critical', Boolean, {'default': False}), |
| 118 | ('extn_value', OctetString), |
| 119 | ] |
| 120 | |
| 121 | _oid_pair = ('extn_id', 'extn_value') |
| 122 | _oid_specs = { |
| 123 | 'ocsp_noonce': OctetString, |
| 124 | 'ocsp_extended_revoke': Null, |
| 125 | } |
| 126 | |
| 127 | |
| 128 | class ResponseDataExtensions(SequenceOf): |
| 129 | _child_spec = ResponseDataExtension |
| 130 | |
| 131 | |
| 132 | class CrlId(Sequence): |
| 133 | _fields = [ |
| 134 | ('crl_url', IA5String, {'tag_type': 'explicit', 'tag': 0, 'optional': True}), |
| 135 | ('crl_num', Integer, {'tag_type': 'explicit', 'tag': 1, 'optional': True}), |
| 136 | ('crl_time', GeneralizedTime, {'tag_type': 'explicit', 'tag': 2, 'optional': True}), |
| 137 | ] |
| 138 | |
| 139 | |
| 140 | class SingleResponseExtensionId(ObjectIdentifier): |
| 141 | _map = { |
| 142 | '1.3.6.1.5.5.7.48.1.3': 'ocsp_crl', |
| 143 | '1.3.6.1.5.5.7.48.1.6': 'ocsp_archive_cutoff', |
| 144 | # These are CRLEntryExtension values from https://tools.ietf.org/html/rfc5280 |
| 145 | '2.5.29.21': 'crl_reason', |
| 146 | '2.5.29.24': 'invalidity_date', |
| 147 | '2.5.29.29': 'certificate_issuer', |
| 148 | } |
| 149 | |
| 150 | |
| 151 | class SingleResponseExtension(Sequence): |
| 152 | _fields = [ |
| 153 | ('extn_id', SingleResponseExtensionId), |
| 154 | ('critical', Boolean, {'default': False}), |
| 155 | ('extn_value', OctetString), |
| 156 | ] |
| 157 | |
| 158 | _oid_pair = ('extn_id', 'extn_value') |
| 159 | _oid_specs = { |
| 160 | 'ocsp_crl': CrlId, |
| 161 | 'ocsp_archive_cutoff': GeneralizedTime, |
| 162 | 'crl_reason': CRLReason, |
| 163 | 'invalidity_date': GeneralizedTime, |
| 164 | 'certificate_issuer': GeneralNames, |
| 165 | } |
| 166 | |
| 167 | |
| 168 | class SingleResponseExtensions(SequenceOf): |
| 169 | _child_spec = SingleResponseExtension |
| 170 | |
| 171 | |
| 172 | class Version(Integer): |
| 173 | _map = { |
| 174 | 0: 'v1' |
| 175 | } |
| 176 | |
| 177 | class CertId(Sequence): |
| 178 | _fields = [ |
| 179 | ('hash_algorithm', DigestAlgorithm), |
| 180 | ('issuer_name_hash', OctetString), |
| 181 | ('issuer_key_hash', OctetString), |
| 182 | ('serial_number', Integer), |
| 183 | ] |
| 184 | |
| 185 | |
| 186 | class Request(Sequence): |
| 187 | _fields = [ |
| 188 | ('req_cert', CertId), |
| 189 | ('single_request_extensions', RequestExtensions, {'tag_type': 'explicit', 'tag': 0, 'optional': True}), |
| 190 | ] |
| 191 | |
| 192 | |
| 193 | class Requests(SequenceOf): |
| 194 | _child_spec = Request |
| 195 | |
| 196 | |
| 197 | class TBSRequest(Sequence): |
| 198 | _fields = [ |
| 199 | ('version', Version, {'tag_type': 'explicit', 'tag': 0, 'default': 'v1'}), |
| 200 | ('requestor_name', GeneralName, {'tag_type': 'explicit', 'tag': 1, 'optional': True}), |
| 201 | ('request_list', Requests), |
| 202 | ('request_extensions', TBSRequestExtensions, {'tag_type': 'explicit', 'tag': 2, 'optional': True}), |
| 203 | ] |
| 204 | |
| 205 | |
| 206 | class Certificates(SequenceOf): |
| 207 | _child_spec = Certificate |
| 208 | |
| 209 | |
| 210 | class Signature(Sequence): |
| 211 | _fields = [ |
| 212 | ('signature_algorithm', SignedDigestAlgorithm), |
| 213 | ('signature', OctetBitString), |
| 214 | ('certs', Certificates, {'tag_type': 'explicit', 'tag': 0, 'optional': True}), |
| 215 | ] |
| 216 | |
| 217 | |
| 218 | class OCSPRequest(Sequence): |
| 219 | _fields = [ |
| 220 | ('tbs_request', TBSRequest), |
| 221 | ('optional_signature', Signature, {'tag_type': 'explicit', 'tag': 0, 'optional': True}), |
| 222 | ] |
| 223 | |
| 224 | |
| 225 | class OCSPResponseStatus(Enumerated): |
| 226 | _map = { |
| 227 | 0: 'successful', |
| 228 | 1: 'malformed_request', |
| 229 | 2: 'internal_error', |
| 230 | 3: 'try_later', |
| 231 | 5: 'sign_required', |
| 232 | 6: 'unauthoried', |
| 233 | } |
| 234 | |
| 235 | |
| 236 | class ResponderId(Choice): |
| 237 | _alternatives = [ |
| 238 | ('by_name', Name, {'tag_type': 'explicit', 'tag': 1}), |
| 239 | ('by_key', OctetString, {'tag_type': 'explicit', 'tag': 2}), |
| 240 | ] |
| 241 | |
| 242 | |
| 243 | class RevokedInfo(Sequence): |
| 244 | _fields = [ |
| 245 | ('revocation_time', GeneralizedTime), |
| 246 | ('revocation_reason', CRLReason, {'tag_type': 'explicit', 'tag': 0, 'optional': True}), |
| 247 | ] |
| 248 | |
| 249 | |
| 250 | class CertStatus(Choice): |
| 251 | _alternatives = [ |
| 252 | ('good', Null, {'tag_type': 'implicit', 'tag': 0}), |
| 253 | ('revoked', RevokedInfo, {'tag_type': 'implicit', 'tag': 1}), |
| 254 | ('unknown', Null, {'tag_type': 'implicit', 'tag': 2}), |
| 255 | ] |
| 256 | |
| 257 | |
| 258 | class SingleResponse(Sequence): |
| 259 | _fields = [ |
| 260 | ('cert_id', CertId), |
| 261 | ('cert_status', CertStatus), |
| 262 | ('this_update', GeneralizedTime), |
| 263 | ('next_update', GeneralizedTime, {'tag_type': 'explicit', 'tag': 0, 'optional': True}), |
| 264 | ('single_extensions', SingleResponseExtensions, {'tag_type': 'explicit', 'tag': 1, 'optional': True}), |
| 265 | ] |
| 266 | |
| 267 | |
| 268 | class Responses(SequenceOf): |
| 269 | _child_spec = SingleResponse |
| 270 | |
| 271 | |
| 272 | class ResponseData(Sequence): |
| 273 | _fields = [ |
| 274 | ('version', Version, {'tag_type': 'explicit', 'tag': 0, 'default': 'v1'}), |
| 275 | ('responder_id', ResponderId), |
| 276 | ('produced_at', GeneralizedTime), |
| 277 | ('responses', Responses), |
| 278 | ('response_extensions', ResponseDataExtensions, {'tag_type': 'explicit', 'tag': 1, 'optional': True}), |
| 279 | ] |
| 280 | |
| 281 | |
| 282 | class BasicOCSPResponse(Sequence): |
| 283 | _fields = [ |
| 284 | ('tbs_response_data', ResponseData), |
| 285 | ('signature_algorithm', SignedDigestAlgorithm), |
| 286 | ('signature', OctetBitString), |
| 287 | ('certs', Certificates, {'tag_type': 'explicit', 'tag': 0, 'optional': True}), |
| 288 | ] |
| 289 | |
| 290 | |
| 291 | class ResponseBytes(Sequence): |
| 292 | _fields = [ |
| 293 | ('response_type', ResponseType), |
| 294 | ('response', OctetString), |
| 295 | ] |
| 296 | |
| 297 | _oid_pair = ('response_type', 'response') |
| 298 | _oid_specs = { |
| 299 | 'basic_ocsp_response': BasicOCSPResponse, |
| 300 | } |
| 301 | |
| 302 | |
| 303 | class OCSPResponse(Sequence): |
| 304 | _fields = [ |
| 305 | ('response_status', OCSPResponseStatus), |
| 306 | ('response_bytes', ResponseBytes, {'tag_type': 'explicit', 'tag': 0, 'optional': True}), |
| 307 | ] |