/* This needs to be exported to make it callable from Foundation. */
CF_EXPORT CFReadStreamRef CFReadStreamCreateWithData(CFAllocatorRef alloc, CFDataRef data) {
_CFReadDataStreamContext ctxt;
CFReadStreamRef result = NULL;
CFDataRef copiedData = CFDataCreateCopy(alloc, data);
ctxt.data = copiedData;
result = (CFReadStreamRef)_CFStreamCreateWithConstantCallbacks(alloc, &ctxt, (struct _CFStreamCallBacks *)(&readDataCallBacks), TRUE);
CFRelease(copiedData);
return result;
}
CFDataRef SOSRecoveryKeyCopyKeyForAccount(CFAllocatorRef allocator, SOSAccountRef account, SOSRecoveryKeyBagRef recoveryKeyBag, CFErrorRef *error) {
CFDataRef retval = NULL;
require_action_quiet(recoveryKeyBag && recoveryKeyBag->recoveryKeyBag && recoveryKeyBag->accountDSID,
errOut, SOSCreateError(kSOSErrorDecodeFailure, CFSTR("Null recoveryKeyBag Object"), NULL, error));
CFStringRef dsid = asString(SOSAccountGetValue(account, kSOSDSIDKey, NULL), error);
require_action_quiet(dsid, errOut, SOSCreateError(kSOSErrorDecodeFailure, CFSTR("No DSID in Account"), NULL, error));
require_action_quiet(CFEqual(dsid, recoveryKeyBag->accountDSID), errOut, SOSCreateError(kSOSErrorDecodeFailure, CFSTR("Account/RecoveryKeybag DSID miss-match"), NULL, error));
retval = CFDataCreateCopy(allocator, recoveryKeyBag->recoveryKeyBag);
errOut:
return retval;
}
static CFDataRef
createIVFromPassword(CFStringRef password)
{
CFDataRef hashedPassword, retval;
CFMutableDataRef iv;
if((hashedPassword = digestString(password)) == NULL) return NULL;
iv = CFDataCreateMutableCopy(kCFAllocatorDefault, CFDataGetLength(hashedPassword)+1, hashedPassword);
CFDataDeleteBytes(iv, CFRangeMake(IVBYTECOUNT, CFDataGetLength(iv)-IVBYTECOUNT));
retval = CFDataCreateCopy(kCFAllocatorDefault, iv);
CFRelease(hashedPassword);
CFRelease(iv);
return retval;
}
CFDataRef Preferences::create_signature(void) const
{
if (this->m_plist) {
return get_path_signature(this->m_pspec.c_str());
}
if (this->m_scpref) {
CFDataRef sig;
/* Copy the signature so we adhere to the get rule. */
if ((sig = SCPreferencesGetSignature(m_scpref))) {
return CFDataCreateCopy(kCFAllocatorDefault, sig);
}
}
return NULL;
}
static void IPStreamCallback(CFReadStreamRef stream, CFStreamEventType eventType, void *clientCallBackInfo)
{
CFMutableDataRef responseData = (CFMutableDataRef)clientCallBackInfo;
if(eventType & kCFStreamEventHasBytesAvailable)
{
UInt8 buffer[1024];
CFIndex read;
do {
read = CFReadStreamRead(stream, buffer, sizeof(buffer));
if(read > 0)
CFDataAppendBytes(responseData, buffer, read);
} while(read > 0);
}
if(eventType & (kCFStreamEventEndEncountered | kCFStreamEventErrorOccurred))
{
if((eventType & kCFStreamEventEndEncountered) && publicIPState == IPStateFetching)
{
if(publicIPData)
CFRelease(publicIPData);
publicIPData = CFDataCreateCopy(kCFAllocatorDefault, responseData);
publicIPState = IPStateFetched;
}
if(eventType & kCFStreamEventErrorOccurred)
{
if(publicIPData)
CFRelease(publicIPData);
publicIPData = NULL;
publicIPState = IPStateInvalid;
}
CFReadStreamClose(stream);
CFReadStreamSetClient(stream, 0, NULL, NULL);
CFReadStreamUnscheduleFromRunLoop(stream, CFRunLoopGetCurrent(), kCFRunLoopCommonModes);
CFRelease(stream);
CFRelease(responseData);
}
}
SOSRecoveryKeyBagRef SOSRecoveryKeyBagCreateForAccount(CFAllocatorRef allocator, SOSAccountRef account, CFDataRef pubData, CFErrorRef *error) {
SOSRecoveryKeyBagRef retval = NULL;
SOSGenCountRef gencount = NULL;
require_action_quiet(account, errOut, SOSCreateError(kSOSErrorEncodeFailure, CFSTR("Null Account Object"), NULL, error));
CFStringRef dsid = asString(SOSAccountGetValue(account, kSOSDSIDKey, NULL), error);
gencount = SOSGenerationCreate();
require_action_quiet(pubData && dsid && gencount, errOut, SOSCreateError(kSOSErrorEncodeFailure, CFSTR("Couldn't get recovery keybag components"), NULL, error));
retval = CFTypeAllocate(SOSRecoveryKeyBag, struct __OpaqueSOSRecoveryKeyBag, allocator);
require_action_quiet(retval, errOut, SOSCreateError(kSOSErrorEncodeFailure, CFSTR("Couldn't get memory for recoveryKeyBag"), NULL, error));
retval->rkbVersion = CURRENT_RKB_VERSION;
retval->accountDSID = CFStringCreateCopy(allocator, dsid);
CFRetainAssign(retval->generation, gencount);
retval->recoveryKeyBag = CFDataCreateCopy(allocator, pubData);
errOut:
CFReleaseNull(gencount);
return retval;
}
static inline TStringIRep* TSICTStringCreateWithDataOfTypeAndFormat(CFDataRef data, TSITStringTag type, TSITStringFormat format)
{
if (format == kTSITStringFormatDefault) {
format = TSICTStringGetDefaultFormat();
}
TStringIRep* rep = calloc(1, sizeof(TStringIRep));
rep->data = CFDataCreateCopy(kCFAllocatorDefault, data);
rep->type = type;
rep->format = format;
rep->length = calloc(10, sizeof(char));
CFIndex len = CFDataGetLength(rep->data);
if (snprintf(rep->length, 10, "%lu", len)) {
return rep;
} else {
TSICTStringDestroy(rep);
return NULL;
}
}
CFErrorRef accumulate_data(CFMutableArrayRef *a, CFDataRef d) {
if (!*a) {
*a = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
if (!*a) {
return GetNoMemoryError();
}
}
CFDataRef dc = CFDataCreateCopy(NULL, d);
if (!dc) {
return GetNoMemoryError();
}
CFIndex c = CFArrayGetCount(*a);
CFArrayAppendValue(*a, dc);
CFRelease(dc);
if (CFArrayGetCount(*a) != c+1) {
return GetNoMemoryError();
}
return NULL;
}
OSStatus CMPVideoFormatDescriptionCopyExtradata(CFAllocatorRef allocator, CMVideoFormatDescriptionRef formatDescription, CFDataRef *outExtradata)
{
const FourCharCode mediaSubType = CMFormatDescriptionGetMediaSubType(formatDescription);
if(mediaSubType == kCMVideoCodecType_MPEG4Video || mediaSubType == kCMVideoCodecType_H264)
{
CFDictionaryRef atoms = CMFormatDescriptionGetExtension(formatDescription, kCMFormatDescriptionExtension_SampleDescriptionExtensionAtoms);
CFDataRef extradata = CFDictionaryGetValue(atoms, CFSTR("avcC"));
if(extradata == nil)
{
return CMPParameterError;
}
*outExtradata = CFDataCreateCopy(allocator, extradata);
return noErr;
}
else
{
*outExtradata = NULL;
return noErr;
}
}
static inline CFDataRef TSICTStringCreateDataFromIntermediateRepresentation(TStringIRep* rep)
{
CFIndex len = CFDataGetLength(rep->data);
CFMutableDataRef buffer = CFDataCreateMutableCopy(kCFAllocatorDefault, (len + 12), rep->data);
UInt8* bufferBytes = CFDataGetMutableBytePtr(buffer);
size_t prefixLength = strlen(rep->length) + 1;
CFDataReplaceBytes(buffer, BeginningRange, (const UInt8*)rep->length, (CFIndex)prefixLength);
if (rep->format == kTSITStringFormatTNetstring) {
const UInt8 ftag = (UInt8)TNetstringTypes[rep->type];
CFDataAppendBytes(buffer, &ftag, 1);
bufferBytes[(prefixLength - 1)] = TNetstringSeparator;
} else if (rep->format == kTSITStringFormatOTNetstring) {
const UInt8 ftag = (UInt8)OTNetstringTypes[rep->type];
bufferBytes[(prefixLength - 1)] = ftag;
}
CFDataRef dataRep = CFDataCreateCopy(kCFAllocatorDefault, buffer);
CFRelease(buffer);
return dataRep;
}
Status genUnlockIdent(CFDataRef& uuid) {
auto chosen =
IORegistryEntryFromPath(kIOMasterPortDefault, kIODeviceTreeChosenPath_);
if (chosen == MACH_PORT_NULL) {
return Status(1, "Could not open IOKit DeviceTree");
}
CFMutableDictionaryRef properties = nullptr;
auto kr = IORegistryEntryCreateCFProperties(
chosen, &properties, kCFAllocatorDefault, kNilOptions);
IOObjectRelease(chosen);
if (kr != KERN_SUCCESS) {
return Status(1, "Could not get IOKit chosen properties");
}
if (properties == nullptr) {
return Status(1, "Could not load IOKit properties");
}
CFTypeRef unlock_ident = nullptr;
if (CFDictionaryGetValueIfPresent(
properties, CFSTR("efilogin-unlock-ident"), &unlock_ident)) {
if (CFGetTypeID(unlock_ident) != CFDataGetTypeID()) {
return Status(1, "Unexpected data type for unlock ident");
}
uuid = CFDataCreateCopy(kCFAllocatorDefault, (CFDataRef)unlock_ident);
if (uuid == nullptr) {
return Status(1, "Could not get UUID");
}
CFRelease(properties);
return Status(0, "ok");
}
return Status(1, "Could not get unlock ident");
}
