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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "net/base/x509_util_ios.h" | |
| 6 | |
| 7 #include <cert.h> | |
| 8 #include <CommonCrypto/CommonDigest.h> | |
| 9 #include <nss.h> | |
| 10 #include <prtypes.h> | |
| 11 | |
| 12 #include "base/mac/scoped_cftyperef.h" | |
| 13 #include "crypto/nss_util.h" | |
| 14 #include "net/base/x509_certificate.h" | |
| 15 #include "net/base/x509_util_nss.h" | |
| 16 | |
| 17 using base::mac::ScopedCFTypeRef; | |
| 18 | |
| 19 namespace net { | |
| 20 namespace x509_util_ios { | |
| 21 | |
| 22 namespace { | |
| 23 | |
| 24 // Creates an NSS certificate handle from |data|, which is |length| bytes in | |
| 25 // size. | |
| 26 CERTCertificate* CreateNSSCertHandleFromBytes(const char* data, | |
| 27 int length) { | |
| 28 if (length < 0) | |
| 29 return NULL; | |
| 30 | |
| 31 crypto::EnsureNSSInit(); | |
| 32 | |
| 33 if (!NSS_IsInitialized()) | |
| 34 return NULL; | |
| 35 | |
| 36 SECItem der_cert; | |
| 37 der_cert.data = reinterpret_cast<unsigned char*>(const_cast<char*>(data)); | |
| 38 der_cert.len = length; | |
| 39 der_cert.type = siDERCertBuffer; | |
| 40 | |
| 41 // Parse into a certificate structure. | |
| 42 return CERT_NewTempCertificate(CERT_GetDefaultCertDB(), &der_cert, NULL, | |
| 43 PR_FALSE, PR_TRUE); | |
| 44 } | |
| 45 | |
| 46 } // namespace | |
| 47 | |
| 48 CERTCertificate* CreateNSSCertHandleFromOSHandle( | |
| 49 SecCertificateRef cert_handle) { | |
| 50 ScopedCFTypeRef<CFDataRef> cert_data(SecCertificateCopyData(cert_handle)); | |
| 51 return CreateNSSCertHandleFromBytes( | |
| 52 reinterpret_cast<const char*>(CFDataGetBytePtr(cert_data)), | |
| 53 CFDataGetLength(cert_data)); | |
| 54 } | |
| 55 | |
| 56 SecCertificateRef CreateOSCertHandleFromNSSHandle( | |
| 57 CERTCertificate* nss_cert_handle) { | |
| 58 return X509Certificate::CreateOSCertHandleFromBytes( | |
| 59 reinterpret_cast<const char*>(nss_cert_handle->derCert.data), | |
| 60 nss_cert_handle->derCert.len); | |
| 61 } | |
| 62 | |
| 63 X509Certificate* CreateCertFromNSSHandles( | |
| 64 CERTCertificate* cert_handle, | |
| 65 const std::vector<CERTCertificate*>& intermediates) { | |
| 66 ScopedCFTypeRef<SecCertificateRef> os_server_cert( | |
| 67 CreateOSCertHandleFromNSSHandle(cert_handle)); | |
| 68 if (!os_server_cert) | |
| 69 return NULL; | |
| 70 std::vector<SecCertificateRef> os_intermediates; | |
| 71 for (size_t i = 0; i < intermediates.size(); ++i) { | |
| 72 SecCertificateRef intermediate = | |
| 73 CreateOSCertHandleFromNSSHandle(intermediates[i]); | |
| 74 if (!intermediate) | |
| 75 break; | |
| 76 os_intermediates.push_back(intermediate); | |
| 77 } | |
| 78 | |
| 79 X509Certificate* cert = NULL; | |
| 80 if (intermediates.size() == os_intermediates.size()) { | |
| 81 cert = X509Certificate::CreateFromHandle(os_server_cert, | |
| 82 os_intermediates); | |
| 83 } | |
| 84 | |
| 85 for (size_t i = 0; i < os_intermediates.size(); ++i) | |
| 86 CFRelease(os_intermediates[i]); | |
| 87 return cert; | |
| 88 } | |
| 89 | |
| 90 SHA1HashValue CalculateFingerprintNSS(CERTCertificate* cert) { | |
| 91 DCHECK(cert->derCert.data); | |
| 92 DCHECK_NE(0U, cert->derCert.len); | |
| 93 SHA1HashValue sha1; | |
| 94 memset(sha1.data, 0, sizeof(sha1.data)); | |
| 95 CC_SHA1(cert->derCert.data, cert->derCert.len, sha1.data); | |
| 96 return sha1; | |
| 97 } | |
| 98 | |
| 99 // NSSCertificate implementation. | |
| 100 | |
| 101 NSSCertificate::NSSCertificate(SecCertificateRef cert_handle) { | |
| 102 nss_cert_handle_ = CreateNSSCertHandleFromOSHandle(cert_handle); | |
| 103 DLOG_IF(INFO, cert_handle && !nss_cert_handle_) | |
| 104 << "Could not convert SecCertificateRef to CERTCertificate*"; | |
| 105 } | |
| 106 | |
| 107 NSSCertificate::~NSSCertificate() { | |
| 108 CERT_DestroyCertificate(nss_cert_handle_); | |
| 109 } | |
| 110 | |
| 111 CERTCertificate* NSSCertificate::cert_handle() const { | |
| 112 return nss_cert_handle_; | |
| 113 } | |
| 114 | |
| 115 // NSSCertChain implementation | |
| 116 | |
| 117 NSSCertChain::NSSCertChain(X509Certificate* certificate) { | |
| 118 DCHECK(certificate); | |
| 119 certs_.push_back(CreateNSSCertHandleFromOSHandle( | |
| 120 certificate->os_cert_handle())); | |
| 121 const X509Certificate::OSCertHandles& cert_intermediates = | |
| 122 certificate->GetIntermediateCertificates(); | |
| 123 for (size_t i = 0; i < cert_intermediates.size(); ++i) | |
| 124 certs_.push_back(CreateNSSCertHandleFromOSHandle(cert_intermediates[i])); | |
| 125 } | |
| 126 | |
| 127 NSSCertChain::~NSSCertChain() { | |
| 128 for (size_t i = 0; i < certs_.size(); ++i) | |
| 129 CERT_DestroyCertificate(certs_[i]); | |
| 130 } | |
| 131 | |
| 132 CERTCertificate* NSSCertChain::cert_handle() const { | |
| 133 return certs_.empty() ? NULL : certs_.front(); | |
| 134 } | |
| 135 | |
| 136 const std::vector<CERTCertificate*>& NSSCertChain::cert_chain() const { | |
| 137 return certs_; | |
| 138 } | |
| 139 | |
| 140 } // namespace x509_util_ios | |
| 141 } // namespace net | |
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