projects / apple / libsecurity_codesigning.git / blame
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|---|---|---|
| 7d31e928 A |
1 | /* |
| 2 | * Copyright (c) 2006-2007 Apple Inc. All Rights Reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 6 | * This file contains Original Code and/or Modifications of Original Code | |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. Please obtain a copy of the License at | |
| 10 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
| 11 | * file. | |
| 12 | * | |
| 13 | * The Original Code and all software distributed under the License are | |
| 14 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
| 18 | * Please see the License for the specific language governing rights and | |
| 19 | * limitations under the License. | |
| 20 | * | |
| 21 | * @APPLE_LICENSE_HEADER_END@ | |
| 22 | */ | |
| 23 | ||
| 24 | // | |
| 25 | // csutilities - miscellaneous utilities for the code signing implementation | |
| 26 | // | |
| 27 | #include "csutilities.h" | |
| 516ae477 | 28 | #include <Security/SecCertificatePriv.h> |
| 7d31e928 A |
29 | #include <security_codesigning/requirement.h> |
| 30 | #include <security_utilities/debugging.h> | |
| 31 | #include <security_utilities/errors.h> | |
| 32 | ||
| 33 | namespace Security { | |
| 34 | namespace CodeSigning { | |
| 35 | ||
| 36 | ||
| 37 | // | |
| 38 | // Calculate the canonical hash of a certificate, given its raw (DER) data. | |
| 39 | // | |
| 40 | void hashOfCertificate(const void *certData, size_t certLength, SHA1::Digest digest) | |
| 41 | { | |
| 42 | SHA1 hasher; | |
| 43 | hasher(certData, certLength); | |
| 44 | hasher.finish(digest); | |
| 45 | } | |
| 46 | ||
| 47 | ||
| 48 | // | |
| 49 | // Ditto, given a SecCertificateRef | |
| 50 | // | |
| 51 | void hashOfCertificate(SecCertificateRef cert, SHA1::Digest digest) | |
| 52 | { | |
| 53 | assert(cert); | |
| 54 | CSSM_DATA certData; | |
| 55 | MacOSError::check(SecCertificateGetData(cert, &certData)); | |
| 56 | hashOfCertificate(certData.Data, certData.Length, digest); | |
| 57 | } | |
| 58 | ||
| 59 | ||
| 516ae477 A |
60 | // |
| 61 | // Check to see if a certificate contains a particular field, by OID. This works for extensions, | |
| 62 | // even ones not recognized by the local CL. It does not return any value, only presence. | |
| 63 | // | |
| 64 | bool certificateHasField(SecCertificateRef cert, const CssmOid &oid) | |
| 65 | { | |
| 66 | assert(cert); | |
| 67 | CSSM_DATA *value; | |
| 68 | switch (OSStatus rc = SecCertificateCopyFirstFieldValue(cert, &oid, &value)) { | |
| 69 | case noErr: | |
| 70 | MacOSError::check(SecCertificateReleaseFirstFieldValue(cert, &oid, value)); | |
| 71 | return true; // extension found by oid | |
| 72 | case CSSMERR_CL_UNKNOWN_TAG: | |
| 73 | break; // oid not recognized by CL - continue below | |
| 74 | default: | |
| 75 | MacOSError::throwMe(rc); // error: fail | |
| 76 | } | |
| 77 | ||
| 78 | // check the CL's bag of unrecognized extensions | |
| 79 | CSSM_DATA **values; | |
| 80 | bool found = false; | |
| 81 | if (SecCertificateCopyFieldValues(cert, &CSSMOID_X509V3CertificateExtensionCStruct, &values)) | |
| 82 | return false; // no unrecognized extensions - no match | |
| 83 | if (values) | |
| 84 | for (CSSM_DATA **p = values; *p; p++) { | |
| 85 | const CSSM_X509_EXTENSION *ext = (const CSSM_X509_EXTENSION *)(*p)->Data; | |
| 86 | if (oid == ext->extnId) { | |
| 87 | found = true; | |
| 88 | break; | |
| 89 | } | |
| 90 | } | |
| 91 | MacOSError::check(SecCertificateReleaseFieldValues(cert, &CSSMOID_X509V3CertificateExtensionCStruct, values)); | |
| 92 | return found; | |
| 93 | } | |
| 94 | ||
| 95 | ||
| 7d31e928 A |
96 | } // end namespace CodeSigning |
| 97 | } // end namespace Security |