diff options
Diffstat (limited to 'contrib/keychain-mcd/cert_data.c')
| -rw-r--r-- | contrib/keychain-mcd/cert_data.c | 866 |
1 files changed, 0 insertions, 866 deletions
diff --git a/contrib/keychain-mcd/cert_data.c b/contrib/keychain-mcd/cert_data.c deleted file mode 100644 index c04f68e..0000000 --- a/contrib/keychain-mcd/cert_data.c +++ /dev/null @@ -1,866 +0,0 @@ -/* - * 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; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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; -} |