void ItemImpl::copyPersistentReference(CFDataRef &outDataRef, bool isSecIdentityRef)
{
if (secd_PersistentRef) {
outDataRef = secd_PersistentRef;
return;
}
StLock<Mutex>_(mMutex);
// item must be in a keychain and have a primary key to be persistent
if (!mKeychain || !mPrimaryKey) {
MacOSError::throwMe(errSecItemNotFound);
}
DLDbIdentifier dlDbIdentifier = mKeychain->dlDbIdentifier();
DLDbIdentifier newDlDbIdentifier(dlDbIdentifier.ssuid(),
DLDbListCFPref::AbbreviatedPath(mKeychain->name()).c_str(),
dlDbIdentifier.dbLocation());
NameValueDictionary dict;
NameValueDictionary::MakeNameValueDictionaryFromDLDbIdentifier(newDlDbIdentifier, dict);
CssmData* pKey = mPrimaryKey;
dict.Insert (new NameValuePair(ITEM_KEY, *pKey));
if (isSecIdentityRef) {
uint32_t value = -1;
CssmData valueData((void*)&value, sizeof(value));
dict.Insert (new NameValuePair(IDENTITY_KEY, valueData));
}
// flatten the NameValueDictionary
CssmData dictData;
dict.Export(dictData);
outDataRef = ::CFDataCreate(kCFAllocatorDefault, dictData.Data, dictData.Length);
free (dictData.Data);
}
Item ItemImpl::makeFromPersistentReference(const CFDataRef persistentRef, bool *isIdentityRef)
{
CssmData dictData((void*)::CFDataGetBytePtr(persistentRef), ::CFDataGetLength(persistentRef));
NameValueDictionary dict(dictData);
Keychain keychain;
Item item = (ItemImpl *) NULL;
if (isIdentityRef) {
*isIdentityRef = (dict.FindByName(IDENTITY_KEY) != 0) ? true : false;
}
// make sure we have a database identifier
if (dict.FindByName(SSUID_KEY) != 0)
{
DLDbIdentifier dlDbIdentifier = NameValueDictionary::MakeDLDbIdentifierFromNameValueDictionary(dict);
DLDbIdentifier newDlDbIdentifier(dlDbIdentifier.ssuid(),
DLDbListCFPref::ExpandTildesInPath(dlDbIdentifier.dbName()).c_str(),
dlDbIdentifier.dbLocation());
keychain = globals().storageManager.keychain(newDlDbIdentifier);
const NameValuePair* aDictItem = dict.FindByName(ITEM_KEY);
if (aDictItem && keychain)
{
PrimaryKey primaryKey(aDictItem->Value());
item = keychain->item(primaryKey);
}
}
KCThrowIf_( !item, errSecItemNotFound );
return item;
}