#include "SOSRingDER.h"
#include <AssertMacros.h>
#include "keychain/SecureObjectSync/SOSInternal.h"
#include "keychain/SecureObjectSync/SOSPeer.h"
#include "keychain/SecureObjectSync/SOSPeerInfoInternal.h"
#include "keychain/SecureObjectSync/SOSPeerInfoCollections.h"
#include "keychain/SecureObjectSync/SOSCircle.h"
#include <Security/SecFramework.h>
#include <Security/SecKey.h>
#include <Security/SecKeyPriv.h>
#include <CoreFoundation/CoreFoundation.h>
#include <utilities/SecCFWrappers.h>
#include <corecrypto/ccder.h>
#include <corecrypto/ccdigest.h>
#include <corecrypto/ccsha2.h>
#include <utilities/der_plist.h>
#include <utilities/der_plist_internal.h>
#include <corecrypto/ccder.h>
#include <utilities/der_date.h>
#include <stdlib.h>
#include "SOSRingUtils.h"
size_t SOSRingGetDEREncodedSize(SOSRingRef ring, CFErrorRef *error) {
SOSRingAssertStable(ring);
size_t total_payload = 0;
require_quiet(accumulate_size(&total_payload, der_sizeof_dictionary((CFDictionaryRef) ring->unSignedInformation, error)), fail);
require_quiet(accumulate_size(&total_payload, der_sizeof_dictionary((CFDictionaryRef) ring->signedInformation, error)), fail);
require_quiet(accumulate_size(&total_payload, der_sizeof_dictionary((CFDictionaryRef) ring->signatures, error)), fail);
require_quiet(accumulate_size(&total_payload, der_sizeof_dictionary((CFDictionaryRef) ring->data, error)), fail);
return ccder_sizeof(CCDER_CONSTRUCTED_SEQUENCE, total_payload);
fail:
SecCFDERCreateError(kSecDERErrorUnknownEncoding, CFSTR("don't know how to encode"), NULL, error);
return 0;
}
uint8_t* SOSRingEncodeToDER(SOSRingRef ring, CFErrorRef* error, const uint8_t* der, uint8_t* der_end) {
return ccder_encode_constructed_tl(CCDER_CONSTRUCTED_SEQUENCE, der_end, der,
der_encode_dictionary(ring->unSignedInformation, error, der,
der_encode_dictionary(ring->signedInformation, error, der,
der_encode_dictionary(ring->signatures, error, der,
der_encode_dictionary(ring->data, error, der, der_end)))));
}
CFDataRef SOSRingCopyEncodedData(SOSRingRef ring, CFErrorRef *error) {
return CFDataCreateWithDER(kCFAllocatorDefault, SOSRingGetDEREncodedSize(ring, error), ^uint8_t*(size_t size, uint8_t *buffer) {
return SOSRingEncodeToDER(ring, error, buffer, (uint8_t *) buffer + size);
});
}
SOSRingRef SOSRingCreateFromDER(CFErrorRef* error, const uint8_t** der_p, const uint8_t *der_end) {
SOSRingRef ring = SOSRingAllocate();
SOSRingRef retval = NULL;
const uint8_t *sequence_end;
CFDictionaryRef unSignedInformation = NULL;
CFDictionaryRef signedInformation = NULL;
CFDictionaryRef signatures = NULL;
CFDictionaryRef data = NULL;
require_action_quiet(ring, errOut, secnotice("ring", "Unable to allocate ring"));
*der_p = ccder_decode_constructed_tl(CCDER_CONSTRUCTED_SEQUENCE, &sequence_end, *der_p, der_end);
*der_p = der_decode_dictionary(ALLOCATOR, &unSignedInformation, error, *der_p, sequence_end);
*der_p = der_decode_dictionary(ALLOCATOR, &signedInformation, error, *der_p, sequence_end);
*der_p = der_decode_dictionary(ALLOCATOR, &signatures, error, *der_p, sequence_end);
*der_p = der_decode_dictionary(ALLOCATOR, &data, error, *der_p, sequence_end);
require_action_quiet(*der_p, errOut, secnotice("ring", "Unable to decode DER"));
require_action_quiet(*der_p == der_end, errOut, secnotice("ring", "Unable to decode DER"));
ring->unSignedInformation = CFDictionaryCreateMutableCopy(ALLOCATOR, 0, unSignedInformation);
ring->signedInformation = CFDictionaryCreateMutableCopy(ALLOCATOR, 0, signedInformation);
ring->signatures = CFDictionaryCreateMutableCopy(ALLOCATOR, 0, signatures);
ring->data = CFDictionaryCreateMutableCopy(ALLOCATOR, 0, data);
retval = ring;
ring = NULL;
errOut:
CFReleaseNull(unSignedInformation);
CFReleaseNull(signedInformation);
CFReleaseNull(signatures);
CFReleaseNull(data);
CFReleaseNull(ring);
return retval;
}
SOSRingRef SOSRingCreateFromData(CFErrorRef* error, CFDataRef ring_data) {
const uint8_t *der = CFDataGetBytePtr(ring_data);
CFIndex len = CFDataGetLength(ring_data);
return SOSRingCreateFromDER(error, &der, der+len);
}