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authorAlberto Gonzalez Iniesta <agi@inittab.org>2016-11-21 09:37:33 +0100
committerAlberto Gonzalez Iniesta <agi@inittab.org>2016-11-21 09:37:33 +0100
commit20c8675ba46bda97330a4117c459a59a9f1c465e (patch)
treed888c714fb61947dd79dc44b64a4aaae2f70bfb7 /contrib/keychain-mcd/cert_data.c
parentffca24bed7a03d95585ad02278667abe75d8b272 (diff)
New upstream version 2.4~beta1upstream/2.4_beta1
Diffstat (limited to 'contrib/keychain-mcd/cert_data.c')
-rw-r--r--contrib/keychain-mcd/cert_data.c734
1 files changed, 734 insertions, 0 deletions
diff --git a/contrib/keychain-mcd/cert_data.c b/contrib/keychain-mcd/cert_data.c
new file mode 100644
index 0000000..a04bf79
--- /dev/null
+++ b/contrib/keychain-mcd/cert_data.c
@@ -0,0 +1,734 @@
+/*
+ * OpenVPN -- An application to securely tunnel IP networks
+ * over a single UDP port, with support for SSL/TLS-based
+ * session authentication and key exchange,
+ * packet encryption, packet authentication, and
+ * packet compression.
+ *
+ * Copyright (C) 2010 Brian Raderman <brian@irregularexpression.org>
+ * Copyright (C) 2013-2015 Vasily Kulikov <segoon@openwall.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (see the file COPYING included with this
+ * distribution); if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+
+#include "cert_data.h"
+#include <CommonCrypto/CommonDigest.h>
+#include <openssl/ssl.h>
+
+#include "common_osx.h"
+#include "crypto_osx.h"
+#include <err.h>
+
+CFStringRef kCertDataSubjectName = CFSTR("subject"),
+ kCertDataIssuerName = CFSTR("issuer"),
+ kCertDataSha1Name = CFSTR("SHA1"),
+ kCertDataMd5Name = CFSTR("MD5"),
+ kCertDataSerialName = CFSTR("serial"),
+ kCertNameFwdSlash = CFSTR("/"),
+ kCertNameEquals = CFSTR("=");
+CFStringRef kCertNameOrganization = CFSTR("o"),
+ kCertNameOrganizationalUnit = CFSTR("ou"),
+ kCertNameCountry = CFSTR("c"),
+ kCertNameLocality = CFSTR("l"),
+ kCertNameState = CFSTR("st"),
+ kCertNameCommonName = CFSTR("cn"),
+ kCertNameEmail = CFSTR("e");
+CFStringRef kStringSpace = CFSTR(" "),
+ kStringEmpty = CFSTR("");
+
+typedef struct _CertName
+{
+ CFArrayRef countryName, organization, organizationalUnit, commonName, description, emailAddress,
+ stateName, localityName;
+} CertName, *CertNameRef;
+
+typedef struct _DescData
+{
+ CFStringRef name, value;
+} DescData, *DescDataRef;
+
+void destroyDescData(DescDataRef pData);
+
+CertNameRef createCertName()
+{
+ CertNameRef pCertName = (CertNameRef)malloc(sizeof(CertName));
+ pCertName->countryName = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
+ pCertName->organization = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
+ pCertName->organizationalUnit = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
+ pCertName->commonName = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
+ pCertName->description = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
+ pCertName->emailAddress = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
+ pCertName->stateName = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
+ pCertName->localityName = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
+ return pCertName;
+}
+
+void destroyCertName(CertNameRef pCertName)
+{
+ if (!pCertName)
+ return;
+
+ CFRelease(pCertName->countryName);
+ CFRelease(pCertName->organization);
+ CFRelease(pCertName->organizationalUnit);
+ CFRelease(pCertName->commonName);
+ CFRelease(pCertName->description);
+ CFRelease(pCertName->emailAddress);
+ CFRelease(pCertName->stateName);
+ CFRelease(pCertName->localityName);
+ free(pCertName);
+}
+
+bool CFStringRefCmpCString(CFStringRef cfstr, const char *str)
+{
+ CFStringRef tmp = CFStringCreateWithCStringNoCopy(NULL, str, kCFStringEncodingUTF8, kCFAllocatorNull);
+ CFComparisonResult cresult = CFStringCompare(cfstr, tmp, 0);
+ bool result = cresult == kCFCompareEqualTo;
+ CFRelease(tmp);
+ return result;
+}
+
+CFDateRef GetDateFieldFromCertificate(SecCertificateRef certificate, CFTypeRef oid)
+{
+ const void *keys[] = { oid };
+ CFDictionaryRef dict = NULL;
+ CFErrorRef error;
+ CFDateRef date = NULL;
+
+ CFArrayRef keySelection = CFArrayCreate(NULL, keys , sizeof(keys)/sizeof(keys[0]), &kCFTypeArrayCallBacks);
+ dict = SecCertificateCopyValues(certificate, keySelection, &error);
+ if (dict == NULL)
+ {
+ printErrorMsg("GetDateFieldFromCertificate: SecCertificateCopyValues", error);
+ goto release_ks;
+ }
+ CFDictionaryRef vals = dict ? CFDictionaryGetValue(dict, oid) : NULL;
+ CFNumberRef vals2 = vals ? CFDictionaryGetValue(vals, kSecPropertyKeyValue) : NULL;
+ if (vals2 == NULL)
+ goto release_dict;
+
+ CFAbsoluteTime validityNotBefore;
+ if (CFNumberGetValue(vals2, kCFNumberDoubleType, &validityNotBefore))
+ date = CFDateCreate(kCFAllocatorDefault,validityNotBefore);
+
+release_dict:
+ CFRelease(dict);
+release_ks:
+ CFRelease(keySelection);
+ return date;
+}
+
+CFArrayRef GetFieldsFromCertificate(SecCertificateRef certificate, CFTypeRef oid)
+{
+ CFMutableArrayRef fields = CFArrayCreateMutable(NULL, 0, NULL);
+ CertNameRef pCertName = createCertName();
+ const void* keys[] = { oid, };
+ CFDictionaryRef dict;
+ CFErrorRef error;
+
+ CFArrayRef keySelection = CFArrayCreate(NULL, keys , 1, NULL);
+
+ dict = SecCertificateCopyValues(certificate, keySelection, &error);
+ if (dict == NULL) {
+ printErrorMsg("GetFieldsFromCertificate: SecCertificateCopyValues", error);
+ CFRelease(keySelection);
+ CFRelease(fields);
+ destroyCertName(pCertName);
+ return NULL;
+ }
+ CFDictionaryRef vals = CFDictionaryGetValue(dict, oid);
+ CFArrayRef vals2 = vals ? CFDictionaryGetValue(vals, kSecPropertyKeyValue) : NULL;
+ if (vals2)
+ {
+ for(int i = 0; i < CFArrayGetCount(vals2); i++) {
+ CFDictionaryRef subDict = CFArrayGetValueAtIndex(vals2, i);
+ CFStringRef label = CFDictionaryGetValue(subDict, kSecPropertyKeyLabel);
+ CFStringRef value = CFDictionaryGetValue(subDict, kSecPropertyKeyValue);
+
+ if (CFStringCompare(label, kSecOIDEmailAddress, 0) == kCFCompareEqualTo)
+ CFArrayAppendValue((CFMutableArrayRef)pCertName->emailAddress, value);
+ else if (CFStringCompare(label, kSecOIDCountryName, 0) == kCFCompareEqualTo)
+ CFArrayAppendValue((CFMutableArrayRef)pCertName->countryName, value);
+ else if (CFStringCompare(label, kSecOIDOrganizationName, 0) == kCFCompareEqualTo)
+ CFArrayAppendValue((CFMutableArrayRef)pCertName->organization, value);
+ else if (CFStringCompare(label, kSecOIDOrganizationalUnitName, 0) == kCFCompareEqualTo)
+ CFArrayAppendValue((CFMutableArrayRef)pCertName->organizationalUnit, value);
+ else if (CFStringCompare(label, kSecOIDCommonName, 0) == kCFCompareEqualTo)
+ CFArrayAppendValue((CFMutableArrayRef)pCertName->commonName, value);
+ else if (CFStringCompare(label, kSecOIDDescription, 0) == kCFCompareEqualTo)
+ CFArrayAppendValue((CFMutableArrayRef)pCertName->description, value);
+ else if (CFStringCompare(label, kSecOIDStateProvinceName, 0) == kCFCompareEqualTo)
+ CFArrayAppendValue((CFMutableArrayRef)pCertName->stateName, value);
+ else if (CFStringCompare(label, kSecOIDLocalityName, 0) == kCFCompareEqualTo)
+ CFArrayAppendValue((CFMutableArrayRef)pCertName->localityName, value);
+ }
+ CFArrayAppendValue(fields, pCertName);
+ }
+
+ CFRelease(dict);
+ CFRelease(keySelection);
+ return fields;
+}
+
+CertDataRef createCertDataFromCertificate(SecCertificateRef certificate)
+{
+ CertDataRef pCertData = (CertDataRef)malloc(sizeof(CertData));
+ pCertData->subject = GetFieldsFromCertificate(certificate, kSecOIDX509V1SubjectName);
+ pCertData->issuer = GetFieldsFromCertificate(certificate, kSecOIDX509V1IssuerName);
+
+ CFDataRef data = SecCertificateCopyData(certificate);
+ if (data == NULL)
+ {
+ warnx("SecCertificateCopyData() returned NULL");
+ destroyCertData(pCertData);
+ return NULL;
+ }
+
+ unsigned char sha1[CC_SHA1_DIGEST_LENGTH];
+ CC_SHA1(CFDataGetBytePtr(data), CFDataGetLength(data), sha1);
+ pCertData->sha1 = createHexString(sha1, CC_SHA1_DIGEST_LENGTH);
+
+ unsigned char md5[CC_MD5_DIGEST_LENGTH];
+ CC_MD5(CFDataGetBytePtr(data), CFDataGetLength(data), md5);
+ pCertData->md5 = createHexString((unsigned char*)md5, CC_MD5_DIGEST_LENGTH);
+
+ CFDataRef serial = SecCertificateCopySerialNumber(certificate, NULL);
+ pCertData->serial = createHexString((unsigned char *)CFDataGetBytePtr(serial), CFDataGetLength(serial));
+ CFRelease(serial);
+
+ return pCertData;
+}
+
+CFStringRef stringFromRange(const char *cstring, CFRange range)
+{
+ CFStringRef str = CFStringCreateWithBytes (NULL, (uint8*)&cstring[range.location], range.length, kCFStringEncodingUTF8, false);
+ CFMutableStringRef mutableStr = CFStringCreateMutableCopy(NULL, 0, str);
+ CFStringTrimWhitespace(mutableStr);
+ CFRelease(str);
+ return mutableStr;
+}
+
+DescDataRef createDescData(const char *description, CFRange nameRange, CFRange valueRange)
+{
+ DescDataRef pRetVal = (DescDataRef)malloc(sizeof(DescData));
+
+ memset(pRetVal, 0, sizeof(DescData));
+
+ if (nameRange.length > 0)
+ pRetVal->name = stringFromRange(description, nameRange);
+
+ if (valueRange.length > 0)
+ pRetVal->value = stringFromRange(description, valueRange);
+
+#if 0
+ fprintf(stderr, "name = '%s', value = '%s'\n",
+ CFStringGetCStringPtr(pRetVal->name, kCFStringEncodingUTF8),
+ CFStringGetCStringPtr(pRetVal->value, kCFStringEncodingUTF8));
+#endif
+ return pRetVal;
+}
+
+void destroyDescData(DescDataRef pData)
+{
+ if (pData->name)
+ CFRelease(pData->name);
+
+ if (pData->value)
+ CFRelease(pData->value);
+
+ free(pData);
+}
+
+CFArrayRef createDescDataPairs(const char *description)
+{
+ int numChars = strlen(description);
+ CFRange nameRange, valueRange;
+ DescDataRef pData;
+ CFMutableArrayRef retVal = CFArrayCreateMutable(NULL, 0, NULL);
+
+ int i = 0;
+
+ nameRange = CFRangeMake(0, 0);
+ valueRange = CFRangeMake(0, 0);
+ bool bInValue = false;
+
+ while(i < numChars)
+ {
+ if (!bInValue && (description[i] != ':'))
+ {
+ nameRange.length++;
+ }
+ else if (bInValue && (description[i] != ':'))
+ {
+ valueRange.length++;
+ }
+ else if(!bInValue)
+ {
+ bInValue = true;
+ valueRange.location = i + 1;
+ valueRange.length = 0;
+ }
+ else //(bInValue)
+ {
+ bInValue = false;
+ while(description[i] != ' ')
+ {
+ valueRange.length--;
+ i--;
+ }
+
+ pData = createDescData(description, nameRange, valueRange);
+ CFArrayAppendValue(retVal, pData);
+
+ nameRange.location = i + 1;
+ nameRange.length = 0;
+ }
+
+ i++;
+ }
+
+ pData = createDescData(description, nameRange, valueRange);
+ CFArrayAppendValue(retVal, pData);
+ return retVal;
+}
+
+void arrayDestroyDescData(const void *val, void *context)
+{
+ DescDataRef pData = (DescDataRef) val;
+ destroyDescData(pData);
+}
+
+
+int parseNameComponent(CFStringRef dn, CFStringRef *pName, CFStringRef *pValue)
+{
+ CFArrayRef nameStrings = CFStringCreateArrayBySeparatingStrings(NULL, dn, kCertNameEquals);
+
+ *pName = *pValue = NULL;
+
+ if (CFArrayGetCount(nameStrings) != 2)
+ return 0;
+
+ CFMutableStringRef str;
+
+ str = CFStringCreateMutableCopy(NULL, 0, CFArrayGetValueAtIndex(nameStrings, 0));
+ CFStringTrimWhitespace(str);
+ *pName = str;
+
+ str = CFStringCreateMutableCopy(NULL, 0, CFArrayGetValueAtIndex(nameStrings, 1));
+ CFStringTrimWhitespace(str);
+ *pValue = str;
+
+ CFRelease(nameStrings);
+ return 1;
+}
+
+int tryAppendSingleCertField(CertNameRef pCertName, CFArrayRef where, CFStringRef key,
+ CFStringRef name, CFStringRef value)
+{
+ if (CFStringCompareWithOptions(name, key, CFRangeMake(0, CFStringGetLength(name)), kCFCompareCaseInsensitive)
+ == kCFCompareEqualTo) {
+ CFArrayAppendValue((CFMutableArrayRef)where, value);
+ return 1;
+ }
+ return 0;
+}
+
+int appendCertField(CertNameRef pCert, CFStringRef name, CFStringRef value)
+{
+ struct {
+ CFArrayRef field;
+ CFStringRef key;
+ } fields[] = {
+ { pCert->organization, kCertNameOrganization},
+ { pCert->organizationalUnit, kCertNameOrganizationalUnit},
+ { pCert->countryName, kCertNameCountry},
+ { pCert->localityName, kCertNameLocality},
+ { pCert->stateName, kCertNameState},
+ { pCert->commonName, kCertNameCommonName},
+ { pCert->emailAddress, kCertNameEmail},
+ };
+ int i;
+ int ret = 0;
+
+ for (i=0; i<sizeof(fields)/sizeof(fields[0]); i++)
+ ret += tryAppendSingleCertField(pCert, fields[i].field, fields[i].key, name, value);
+ return ret;
+}
+
+int parseCertName(CFStringRef nameDesc, CFMutableArrayRef names)
+{
+ CFArrayRef nameStrings = CFStringCreateArrayBySeparatingStrings(NULL, nameDesc, kCertNameFwdSlash);
+ int count = CFArrayGetCount(nameStrings);
+ int i;
+ int ret = 1;
+
+ CertNameRef pCertName = createCertName();
+
+ for(i = 0;i < count;i++)
+ {
+ CFMutableStringRef dn = CFStringCreateMutableCopy(NULL, 0, CFArrayGetValueAtIndex(nameStrings, i));
+ CFStringTrimWhitespace(dn);
+
+ CFStringRef name, value;
+
+ if (!parseNameComponent(dn, &name, &value))
+ ret = 0;
+
+ if (!name || !value)
+ {
+ if (name)
+ CFRelease(name);
+
+ if (value)
+ CFRelease(value);
+ if (name && !value)
+ ret = 0;
+
+ CFRelease(dn);
+ continue;
+ }
+
+ if (!appendCertField(pCertName, name, value))
+ ret = 0;
+ CFRelease(name);
+ CFRelease(value);
+ CFRelease(dn);
+ }
+
+ CFArrayAppendValue(names, pCertName);
+ CFRelease(nameStrings);
+ return ret;
+}
+
+int arrayParseDescDataPair(const void *val, void *context)
+{
+ DescDataRef pDescData = (DescDataRef)val;
+ CertDataRef pCertData = (CertDataRef)context;
+ int ret = 1;
+
+ if (!pDescData->name || !pDescData->value)
+ return 0;
+
+ if (CFStringCompareWithOptions(pDescData->name, kCertDataSubjectName, CFRangeMake(0, CFStringGetLength(pDescData->name)), kCFCompareCaseInsensitive) == kCFCompareEqualTo)
+ ret = parseCertName(pDescData->value, (CFMutableArrayRef)pCertData->subject);
+ else if (CFStringCompareWithOptions(pDescData->name, kCertDataIssuerName, CFRangeMake(0, CFStringGetLength(pDescData->name)), kCFCompareCaseInsensitive) == kCFCompareEqualTo)
+ ret = parseCertName(pDescData->value, (CFMutableArrayRef)pCertData->issuer);
+ else if (CFStringCompareWithOptions(pDescData->name, kCertDataSha1Name, CFRangeMake(0, CFStringGetLength(pDescData->name)), kCFCompareCaseInsensitive) == kCFCompareEqualTo)
+ pCertData->sha1 = CFRetain(pDescData->value);
+ else if (CFStringCompareWithOptions(pDescData->name, kCertDataMd5Name, CFRangeMake(0, CFStringGetLength(pDescData->name)), kCFCompareCaseInsensitive) == kCFCompareEqualTo)
+ pCertData->md5 = CFRetain(pDescData->value);
+ else if (CFStringCompareWithOptions(pDescData->name, kCertDataSerialName, CFRangeMake(0, CFStringGetLength(pDescData->name)), kCFCompareCaseInsensitive) == kCFCompareEqualTo)
+ pCertData->serial = CFRetain(pDescData->value);
+ else
+ return 0;
+
+ return ret;
+}
+
+CertDataRef createCertDataFromString(const char *description)
+{
+ CertDataRef pCertData = (CertDataRef)malloc(sizeof(CertData));
+ pCertData->subject = CFArrayCreateMutable(NULL, 0, NULL);
+ pCertData->issuer = CFArrayCreateMutable(NULL, 0, NULL);
+ pCertData->sha1 = NULL;
+ pCertData->md5 = NULL;
+ pCertData->serial = NULL;
+
+ CFArrayRef pairs = createDescDataPairs(description);
+ for (int i=0; i<CFArrayGetCount(pairs); i++)
+ if (!arrayParseDescDataPair(CFArrayGetValueAtIndex(pairs, i), pCertData)) {
+ arrayDestroyDescData(pCertData, NULL);
+ CFArrayApplyFunction(pairs, CFRangeMake(0, CFArrayGetCount(pairs)), arrayDestroyDescData, NULL);
+ CFRelease(pairs);
+ return 0;
+ }
+
+ CFArrayApplyFunction(pairs, CFRangeMake(0, CFArrayGetCount(pairs)), arrayDestroyDescData, NULL);
+ CFRelease(pairs);
+ return pCertData;
+}
+
+void arrayDestroyCertName(const void *val, void *context)
+{
+ CertNameRef pCertName = (CertNameRef)val;
+ destroyCertName(pCertName);
+}
+
+void destroyCertData(CertDataRef pCertData)
+{
+ if (pCertData->subject)
+ {
+ CFArrayApplyFunction(pCertData->subject, CFRangeMake(0, CFArrayGetCount(pCertData->subject)), arrayDestroyCertName, NULL);
+ CFRelease(pCertData->subject);
+ }
+
+ if (pCertData->issuer)
+ {
+ CFArrayApplyFunction(pCertData->issuer, CFRangeMake(0, CFArrayGetCount(pCertData->issuer)), arrayDestroyCertName, NULL);
+ CFRelease(pCertData->issuer);
+ }
+
+ if (pCertData->sha1)
+ CFRelease(pCertData->sha1);
+
+ if (pCertData->md5)
+ CFRelease(pCertData->md5);
+
+ if (pCertData->serial)
+ CFRelease(pCertData->serial);
+
+ free(pCertData);
+}
+
+bool stringArrayMatchesTemplate(CFArrayRef strings, CFArrayRef templateArray)
+{
+ int templateCount, stringCount, i;
+
+ templateCount = CFArrayGetCount(templateArray);
+
+ if (templateCount > 0)
+ {
+ stringCount = CFArrayGetCount(strings);
+ if (stringCount != templateCount)
+ return false;
+
+ for(i = 0;i < stringCount;i++)
+ {
+ CFStringRef str, template;
+
+ template = (CFStringRef)CFArrayGetValueAtIndex(templateArray, i);
+ str = (CFStringRef)CFArrayGetValueAtIndex(strings, i);
+
+ if (CFStringCompareWithOptions(template, str, CFRangeMake(0, CFStringGetLength(template)), kCFCompareCaseInsensitive) != kCFCompareEqualTo)
+ return false;
+ }
+ }
+
+ return true;
+
+}
+
+bool certNameMatchesTemplate(CertNameRef pCertName, CertNameRef pTemplate)
+{
+ if (!stringArrayMatchesTemplate(pCertName->countryName, pTemplate->countryName))
+ return false;
+ else if (!stringArrayMatchesTemplate(pCertName->organization, pTemplate->organization))
+ return false;
+ else if (!stringArrayMatchesTemplate(pCertName->organizationalUnit, pTemplate->organizationalUnit))
+ return false;
+ else if (!stringArrayMatchesTemplate(pCertName->commonName, pTemplate->commonName))
+ return false;
+ else if (!stringArrayMatchesTemplate(pCertName->emailAddress, pTemplate->emailAddress))
+ return false;
+ else if (!stringArrayMatchesTemplate(pCertName->stateName, pTemplate->stateName))
+ return false;
+ else if (!stringArrayMatchesTemplate(pCertName->localityName, pTemplate->localityName))
+ return false;
+ else
+ return true;
+}
+
+bool certNameArrayMatchesTemplate(CFArrayRef certNameArray, CFArrayRef templateArray)
+{
+ int templateCount, certCount, i;
+
+ templateCount = CFArrayGetCount(templateArray);
+
+ if (templateCount > 0)
+ {
+ certCount = CFArrayGetCount(certNameArray);
+ if (certCount != templateCount)
+ return false;
+
+ for(i = 0;i < certCount;i++)
+ {
+ CertNameRef pName, pTemplateName;
+
+ pTemplateName = (CertNameRef)CFArrayGetValueAtIndex(templateArray, i);
+ pName = (CertNameRef)CFArrayGetValueAtIndex(certNameArray, i);
+
+ if (!certNameMatchesTemplate(pName, pTemplateName))
+ return false;
+ }
+ }
+
+ return true;
+}
+
+bool hexStringMatchesTemplate(CFStringRef str, CFStringRef template)
+{
+ if (template)
+ {
+ if (!str)
+ return false;
+
+ CFMutableStringRef strMutable, templateMutable;
+
+ strMutable = CFStringCreateMutableCopy(NULL, 0, str);
+ templateMutable = CFStringCreateMutableCopy(NULL, 0, template);
+
+ CFStringFindAndReplace(strMutable, kStringSpace, kStringEmpty, CFRangeMake(0, CFStringGetLength(strMutable)), 0);
+ CFStringFindAndReplace(templateMutable, kStringSpace, kStringEmpty, CFRangeMake(0, CFStringGetLength(templateMutable)), 0);
+
+ CFComparisonResult result = CFStringCompareWithOptions(templateMutable, strMutable, CFRangeMake(0, CFStringGetLength(templateMutable)), kCFCompareCaseInsensitive);
+
+ CFRelease(strMutable);
+ CFRelease(templateMutable);
+
+ if (result != kCFCompareEqualTo)
+ return false;
+ }
+
+ return true;
+}
+
+bool certDataMatchesTemplate(CertDataRef pCertData, CertDataRef pTemplate)
+{
+ if (!certNameArrayMatchesTemplate(pCertData->subject, pTemplate->subject))
+ return false;
+
+ if (!certNameArrayMatchesTemplate(pCertData->issuer, pTemplate->issuer))
+ return false;
+
+ if (!hexStringMatchesTemplate(pCertData->sha1, pTemplate->sha1))
+ return false;
+
+ if (!hexStringMatchesTemplate(pCertData->md5, pTemplate->md5))
+ return false;
+
+ if (!hexStringMatchesTemplate(pCertData->serial, pTemplate->serial))
+ return false;
+
+ return true;
+}
+
+bool certExpired(SecCertificateRef certificate)
+{
+ bool result;
+ CFDateRef notAfter = GetDateFieldFromCertificate(certificate, kSecOIDX509V1ValidityNotAfter);
+ CFDateRef notBefore = GetDateFieldFromCertificate(certificate, kSecOIDX509V1ValidityNotBefore);
+ CFDateRef now = CFDateCreate(kCFAllocatorDefault, CFAbsoluteTimeGetCurrent());
+
+ if (!notAfter || !notBefore || !now)
+ {
+ warnx("GetDateFieldFromCertificate() returned NULL");
+ result = true;
+ }
+ else
+ {
+ if (CFDateCompare(notBefore, now, NULL) != kCFCompareLessThan ||
+ CFDateCompare(now, notAfter, NULL) != kCFCompareLessThan)
+ result = true;
+ else
+ result = false;
+ }
+
+ CFRelease(notAfter);
+ CFRelease(notBefore);
+ CFRelease(now);
+ return result;
+}
+
+SecIdentityRef findIdentity(CertDataRef pCertDataTemplate)
+{
+ const void *keys[] = {
+ kSecClass,
+ kSecReturnRef,
+ kSecMatchLimit
+ };
+ const void *values[] = {
+ kSecClassIdentity,
+ kCFBooleanTrue,
+ kSecMatchLimitAll
+ };
+ CFArrayRef result = NULL;
+
+ CFDictionaryRef query = CFDictionaryCreate(NULL, keys, values,
+ sizeof(keys) / sizeof(*keys),
+ &kCFTypeDictionaryKeyCallBacks,
+ &kCFTypeDictionaryValueCallBacks);
+ OSStatus status = SecItemCopyMatching(query, (CFTypeRef*)&result);
+ CFRelease(query);
+ if (status != noErr)
+ {
+ warnx ("No identities in keychain found");
+ return NULL;
+ }
+
+ SecIdentityRef bestIdentity = NULL;
+ CFDateRef bestNotBeforeDate = NULL;
+
+ for (int i=0; i<CFArrayGetCount(result); i++)
+ {
+ SecIdentityRef identity = (SecIdentityRef)CFArrayGetValueAtIndex(result, i);
+ if (identity == NULL)
+ {
+ warnx ("identity == NULL");
+ continue;
+ }
+
+ SecCertificateRef certificate = NULL;
+ SecIdentityCopyCertificate (identity, &certificate);
+ if (certificate == NULL)
+ {
+ warnx ("SecIdentityCopyCertificate() returned NULL");
+ continue;
+ }
+
+ CertDataRef pCertData2 = createCertDataFromCertificate(certificate);
+ if (pCertData2 == NULL)
+ {
+ warnx ("createCertDataFromCertificate() returned NULL");
+ goto release_cert;
+ }
+ bool bMatches = certDataMatchesTemplate(pCertData2, pCertDataTemplate);
+ bool bExpired = certExpired(certificate);
+ destroyCertData(pCertData2);
+
+ if (bMatches && !bExpired)
+ {
+ CFDateRef notBeforeDate = GetDateFieldFromCertificate(certificate, kSecOIDX509V1ValidityNotBefore);
+ if (!notBeforeDate)
+ {
+ warnx ("GetDateFieldFromCertificate() returned NULL");
+ goto release_cert;
+ }
+ if (bestIdentity == NULL)
+ {
+ CFRetain(identity);
+ bestIdentity = identity;
+
+ bestNotBeforeDate = notBeforeDate;
+ CFRetain(notBeforeDate);
+ }
+ else if (CFDateCompare(bestNotBeforeDate, notBeforeDate, NULL) == kCFCompareLessThan)
+ {
+ CFRelease(bestIdentity);
+ CFRetain(identity);
+ bestIdentity = identity;
+
+ bestNotBeforeDate = notBeforeDate;
+ CFRetain(notBeforeDate);
+ }
+ CFRelease(notBeforeDate);
+ }
+ release_cert:
+ CFRelease(certificate);
+ }
+ CFRelease(result);
+
+ return bestIdentity;
+}