/*
* This method returns a copy of the mPolicies array which ensures that
* revocation checking (preferably OCSP, otherwise CRL) will be attempted.
*
* If OCSP is already in the mPolicies array, this makes sure the
* CSSM_TP_ACTION_OCSP_REQUIRE_IF_RESP_PRESENT and CSSM_TP_ACTION_OCSP_SUFFICIENT
* flags are set. If it's not already in the array, a new policy object is added.
*
* If CRL is already in the mPolicies array, this makes sure the
* CSSM_TP_ACTION_FETCH_CRL_FROM_NET and CSSM_TP_ACTION_CRL_SUFFICIENT flags are
* set. If it's not already in the array, a new policy object is added.
*
* Caller is responsible for releasing the returned policies array.
*/
CFMutableArrayRef Trust::forceRevocationPolicies(
uint32 &numAdded,
Allocator &alloc,
bool requirePerCert)
{
SecPointer<Policy> ocspPolicy;
SecPointer<Policy> crlPolicy;
CSSM_APPLE_TP_OCSP_OPT_FLAGS ocspFlags;
CSSM_APPLE_TP_CRL_OPT_FLAGS crlFlags;
bool hasOcspPolicy = false;
bool hasCrlPolicy = false;
numAdded = 0;
ocspFlags = CSSM_TP_ACTION_OCSP_SUFFICIENT;
crlFlags = CSSM_TP_ACTION_FETCH_CRL_FROM_NET | CSSM_TP_ACTION_CRL_SUFFICIENT;
if (requirePerCert) {
ocspFlags |= CSSM_TP_ACTION_OCSP_REQUIRE_IF_RESP_PRESENT;
crlFlags |= CSSM_TP_ACTION_REQUIRE_CRL_IF_PRESENT;
}
CFIndex numPolicies = (mPolicies) ? CFArrayGetCount(mPolicies) : 0;
for(CFIndex dex=0; dex<numPolicies; dex++) {
SecPolicyRef secPol = (SecPolicyRef)CFArrayGetValueAtIndex(mPolicies, dex);
SecPointer<Policy> pol = Policy::required(SecPolicyRef(secPol));
const CssmOid &oid = pol->oid();
const CssmData &optData = pol->value();
if(oid == CssmOid::overlay(CSSMOID_APPLE_TP_REVOCATION_OCSP)) {
// make sure OCSP options are set correctly
CSSM_APPLE_TP_OCSP_OPTIONS *opts = (CSSM_APPLE_TP_OCSP_OPTIONS *)optData.Data;
if (opts) {
opts->Flags |= ocspFlags;
} else {
CSSM_APPLE_TP_OCSP_OPTIONS newOpts;
memset(&newOpts, 0, sizeof(newOpts));
newOpts.Version = CSSM_APPLE_TP_OCSP_OPTS_VERSION;
newOpts.Flags = ocspFlags;
CSSM_DATA optData = {sizeof(newOpts), (uint8 *)&newOpts};
pol->value() = optData;
}
hasOcspPolicy = true;
}
else if(oid == CssmOid::overlay(CSSMOID_APPLE_TP_REVOCATION_CRL)) {
// make sure CRL options are set correctly
CSSM_APPLE_TP_CRL_OPTIONS *opts = (CSSM_APPLE_TP_CRL_OPTIONS *)optData.Data;
if (opts) {
opts->CrlFlags |= crlFlags;
} else {
CSSM_APPLE_TP_CRL_OPTIONS newOpts;
memset(&newOpts, 0, sizeof(newOpts));
newOpts.Version = CSSM_APPLE_TP_CRL_OPTS_VERSION;
newOpts.CrlFlags = crlFlags;
CSSM_DATA optData = {sizeof(newOpts), (uint8 *)&newOpts};
pol->value() = optData;
}
hasCrlPolicy = true;
}
}
/* We're potentially adding something to mPolicies, so make a copy we can work with */
CFMutableArrayRef policies = CFArrayCreateMutableCopy(NULL, 0, mPolicies);
if(policies == NULL) {
throw std::bad_alloc();
}
if(!hasOcspPolicy) {
/* Cook up a new Policy object */
ocspPolicy = new Policy(mTP, CssmOid::overlay(CSSMOID_APPLE_TP_REVOCATION_OCSP));
CSSM_APPLE_TP_OCSP_OPTIONS opts;
memset(&opts, 0, sizeof(opts));
opts.Version = CSSM_APPLE_TP_OCSP_OPTS_VERSION;
opts.Flags = ocspFlags;
/* Check prefs dict for local responder info */
Dictionary *prefsDict = NULL;
try { /* per-user prefs */
prefsDict = Dictionary::CreateDictionary(kSecRevocationDomain, Dictionary::US_User, true);
if (!prefsDict->dict()) {
delete prefsDict;
prefsDict = NULL;
}
}
catch(...) {}
if(prefsDict == NULL) {
try { /* system prefs */
prefsDict = Dictionary::CreateDictionary(kSecRevocationDomain, Dictionary::US_System, true);
if (!prefsDict->dict()) {
delete prefsDict;
prefsDict = NULL;
}
}
catch(...) {}
}
if(prefsDict != NULL) {
CFStringRef val = prefsDict->getStringValue(kSecOCSPLocalResponder);
if(val != NULL) {
CFDataRef cfData = CFStringCreateExternalRepresentation(NULL,
val, kCFStringEncodingUTF8, 0);
CFIndex len = CFDataGetLength(cfData);
opts.LocalResponder = (CSSM_DATA_PTR)alloc.malloc(sizeof(CSSM_DATA));
opts.LocalResponder->Data = (uint8 *)alloc.malloc(len);
opts.LocalResponder->Length = len;
memmove(opts.LocalResponder->Data, CFDataGetBytePtr(cfData), len);
CFRelease(cfData);
}
}
/* Policy manages its own copy of the options data */
CSSM_DATA optData = {sizeof(opts), (uint8 *)&opts};
ocspPolicy->value() = optData;
/* Policies array retains the Policy object */
CFArrayAppendValue(policies, ocspPolicy->handle(false));
numAdded++;
if(prefsDict != NULL)
delete prefsDict;
}
if(!hasCrlPolicy) {
/* Cook up a new Policy object */
crlPolicy = new Policy(mTP, CssmOid::overlay(CSSMOID_APPLE_TP_REVOCATION_CRL));
CSSM_APPLE_TP_CRL_OPTIONS opts;
memset(&opts, 0, sizeof(opts));
opts.Version = CSSM_APPLE_TP_CRL_OPTS_VERSION;
opts.CrlFlags = crlFlags;
/* Policy manages its own copy of this data */
CSSM_DATA optData = {sizeof(opts), (uint8 *)&opts};
crlPolicy->value() = optData;
/* Policies array retains the Policy object */
CFArrayAppendValue(policies, crlPolicy->handle(false));
numAdded++;
}
return policies;
}
CFMutableArrayRef Trust::addPreferenceRevocationPolicies(
uint32 &numAdded,
Allocator &alloc)
{
numAdded = 0;
/* any per-user prefs? */
Dictionary* pd = Dictionary::CreateDictionary(kSecRevocationDomain, Dictionary::US_User, true);
if (pd)
{
if (!pd->dict()) {
delete pd;
pd = NULL;
}
}
if(pd == NULL)
{
pd = Dictionary::CreateDictionary(kSecRevocationDomain, Dictionary::US_System, true);
if (!pd->dict()) {
delete pd;
pd = NULL;
}
}
if(pd == NULL)
{
CFDictionaryRef tempDict = defaultRevocationSettings();
if (tempDict == NULL)
return NULL;
pd = new Dictionary(tempDict);
CFRelease(tempDict);
}
auto_ptr<Dictionary> prefsDict(pd);
bool doOcsp = false;
bool doCrl = false;
CFStringRef val;
SecRevocationPolicyStyle ocspStyle = kSecBestAttempt;
SecRevocationPolicyStyle crlStyle = kSecBestAttempt;
SecPointer<Policy> ocspPolicy;
SecPointer<Policy> crlPolicy;
/* Are any revocation policies enabled? */
val = prefsDict->getStringValue(kSecRevocationOcspStyle);
if(val != NULL) {
ocspStyle = parseRevStyle(val);
if(ocspStyle != kSecDisabled) {
doOcsp = true;
}
}
val = prefsDict->getStringValue(kSecRevocationCrlStyle);
if(val != NULL) {
crlStyle = parseRevStyle(val);
if(crlStyle != kSecDisabled) {
doCrl = true;
}
}
if(!doCrl && !doOcsp) {
return NULL;
}
/* which policy first? */
bool ocspFirst = true; // default if both present
if(doCrl && doOcsp) {
val = prefsDict->getStringValue(kSecRevocationWhichFirst);
if((val != NULL) && CFEqual(val, kSecRevocationCrlFirst)) {
ocspFirst = false;
}
}
/* We're adding something to mPolicies, so make a copy we can work with */
CFMutableArrayRef policies = CFArrayCreateMutableCopy(NULL, 0, mPolicies);
if(policies == NULL) {
throw std::bad_alloc();
}
if(doOcsp) {
/* Cook up a new Policy object */
ocspPolicy = new Policy(mTP, CssmOid::overlay(CSSMOID_APPLE_TP_REVOCATION_OCSP));
CSSM_APPLE_TP_OCSP_OPTIONS opts;
memset(&opts, 0, sizeof(opts));
opts.Version = CSSM_APPLE_TP_OCSP_OPTS_VERSION;
/* Now fill in the OCSP-related blanks */
switch(ocspStyle) {
case kSecDisabled:
assert(0);
break;
case kSecBestAttempt:
/* default, nothing to set */
break;
case kSecRequireIfPresentInCertificate:
opts.Flags |= CSSM_TP_ACTION_OCSP_REQUIRE_IF_RESP_PRESENT;
break;
case kSecRequireForAllCertificates:
opts.Flags |= CSSM_TP_ACTION_OCSP_REQUIRE_PER_CERT;
break;
}
if(prefsDict->getBoolValue(kSecRevocationOCSPSufficientPerCert)) {
opts.Flags |= CSSM_TP_ACTION_OCSP_SUFFICIENT;
}
val = prefsDict->getStringValue(kSecOCSPLocalResponder);
if(val != NULL) {
CFDataRef cfData = CFStringCreateExternalRepresentation(NULL,
val, kCFStringEncodingUTF8, 0);
CFIndex len = CFDataGetLength(cfData);
opts.LocalResponder = (CSSM_DATA_PTR)alloc.malloc(sizeof(CSSM_DATA));
opts.LocalResponder->Data = (uint8 *)alloc.malloc(len);
opts.LocalResponder->Length = len;
memmove(opts.LocalResponder->Data, CFDataGetBytePtr(cfData), len);
CFRelease(cfData);
}
/* Policy manages its own copy of this data */
CSSM_DATA optData = {sizeof(opts), (uint8 *)&opts};
ocspPolicy->value() = optData;
numAdded++;
}
if(doCrl) {
/* Cook up a new Policy object */
crlPolicy = new Policy(mTP, CssmOid::overlay(CSSMOID_APPLE_TP_REVOCATION_CRL));
CSSM_APPLE_TP_CRL_OPTIONS opts;
memset(&opts, 0, sizeof(opts));
opts.Version = CSSM_APPLE_TP_CRL_OPTS_VERSION;
/* Now fill in the CRL-related blanks */
opts.CrlFlags = CSSM_TP_ACTION_FETCH_CRL_FROM_NET; // default true
switch(crlStyle) {
case kSecDisabled:
assert(0);
break;
case kSecBestAttempt:
/* default, nothing to set */
break;
case kSecRequireIfPresentInCertificate:
opts.CrlFlags |= CSSM_TP_ACTION_REQUIRE_CRL_IF_PRESENT;
break;
case kSecRequireForAllCertificates:
opts.CrlFlags |= CSSM_TP_ACTION_REQUIRE_CRL_PER_CERT;
break;
}
if(prefsDict->getBoolValue(kSecRevocationCRLSufficientPerCert)) {
opts.CrlFlags |= CSSM_TP_ACTION_CRL_SUFFICIENT;
}
/* Policy manages its own copy of this data */
CSSM_DATA optData = {sizeof(opts), (uint8 *)&opts};
crlPolicy->value() = optData;
numAdded++;
}
/* append in order */
if(doOcsp) {
if(doCrl) {
if(ocspFirst) {
/* these SecCFObject go away when the policies array does */
CFArrayAppendValue(policies, ocspPolicy->handle(false));
CFArrayAppendValue(policies, crlPolicy->handle(false));
}
else {
CFArrayAppendValue(policies, crlPolicy->handle(false));
CFArrayAppendValue(policies, ocspPolicy->handle(false));
}
}
else {
CFArrayAppendValue(policies, ocspPolicy->handle(false));
}
}
else {
assert(doCrl);
CFArrayAppendValue(policies, crlPolicy->handle(false));
}
return policies;
}