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/*
* Copyright (c) 2017 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
*/
#include <config.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <LongBow/runtime.h>
#include <ccnx/common/ccnx_KeyLocator.h>
#include <parc/algol/parc_Memory.h>
#include <parc/algol/parc_Object.h>
#include <parc/security/parc_Key.h>
struct ccnx_key_locator {
union {
PARCKey *key;
CCNxLink *keyLink;
} locator;
CCNxKeyLocatorType type;
};
static void
_Destroy(CCNxKeyLocator **keyLocatorP)
{
if (keyLocatorP != NULL) {
CCNxKeyLocator *keyLocator = *keyLocatorP;
if (ccnxKeyLocator_IsKey(keyLocator)) {
parcKey_Release(&keyLocator->locator.key);
} else if (ccnxKeyLocator_IsKeyLink(keyLocator)) {
ccnxLink_Release(&keyLocator->locator.keyLink);
} else {
assertTrue(0, "KeyLocator is not one of %s.", "Key or KeyLink");
}
}
}
parcObject_ExtendPARCObject(CCNxKeyLocator, _Destroy, ccnxKeyLocator_Copy, ccnxKeyLocator_ToString, ccnxKeyLocator_Equals, NULL, NULL, NULL);
parcObject_ImplementAcquire(ccnxKeyLocator, CCNxKeyLocator);
parcObject_ImplementRelease(ccnxKeyLocator, CCNxKeyLocator);
static CCNxKeyLocator *
_Create(void)
{
CCNxKeyLocator *result = parcObject_CreateInstance(CCNxKeyLocator);
if (NULL != result) {
result->locator.key = NULL;
result->type = CCNxKeyLocatorType_None;
}
return result;
}
CCNxKeyLocator *
ccnxKeyLocator_Copy(const CCNxKeyLocator *original)
{
CCNxKeyLocator *copy = NULL;
switch (original->type) {
case CCNxKeyLocatorType_Key: {
PARCKey *keyCopy = parcKey_Copy(original->locator.key);
copy = ccnxKeyLocator_CreateFromKey(keyCopy);
parcKey_Release(&keyCopy);
}
break;
case CCNxKeyLocatorType_Link: {
CCNxLink *keyLinkCopy = ccnxLink_Copy(original->locator.keyLink);
copy = ccnxKeyLocator_CreateFromKeyLink(keyLinkCopy);
ccnxLink_Release(&keyLinkCopy);
}
break;
case CCNxKeyLocatorType_None:
copy = _Create();
break;
}
return copy;
}
CCNxKeyLocator *
ccnxKeyLocator_CreateFromKey(PARCKey *key)
{
assertNotNull(key, "Parameter must be a non-null CCNxKey pointer.");
CCNxKeyLocator *result = _Create();
if (result != NULL) {
result->locator.key = parcKey_Acquire(key);
result->type = CCNxKeyLocatorType_Key;
}
return result;
}
CCNxKeyLocator *
ccnxKeyLocator_CreateFromKeyLink(CCNxLink *keyLink)
{
CCNxKeyLocator *result = _Create();
if (result != NULL) {
result->locator.keyLink = ccnxLink_Acquire(keyLink);
result->type = CCNxKeyLocatorType_Link;
}
return result;
}
bool
ccnxKeyLocator_Equals(const CCNxKeyLocator *a, const CCNxKeyLocator *b)
{
if (a == b) {
return true;
}
if (a == NULL || b == NULL) {
return false;
}
if (a->type == b->type) {
switch (a->type) {
case CCNxKeyLocatorType_Key:
return parcKey_Equals(a->locator.key, b->locator.key);
case CCNxKeyLocatorType_Link:
return ccnxLink_Equals(a->locator.keyLink, b->locator.keyLink);
default:
break;
// fall through
}
}
return false;
}
CCNxKeyLocatorType
ccnxKeyLocator_GetType(const CCNxKeyLocator *ccnxKeyLocator)
{
assertNotNull(ccnxKeyLocator, "Parameter must be a non-null CCNxKeyLocator pointer.");
return ccnxKeyLocator->type;
}
bool
ccnxKeyLocator_IsKey(const CCNxKeyLocator *keyLocator)
{
return (keyLocator->type == CCNxKeyLocatorType_Key);
}
bool
ccnxKeyLocator_IsKeyLink(const CCNxKeyLocator *keyLocator)
{
return (keyLocator->type == CCNxKeyLocatorType_Link);
}
char *
ccnxKeyLocator_ToString(const CCNxKeyLocator *keyLocator)
{
char *result;
if (keyLocator == NULL) {
char *nullString = "NULL";
result = parcMemory_StringDuplicate(nullString, strlen(nullString));
} else {
char *locator;
if (ccnxKeyLocator_IsKey(keyLocator)) {
locator = parcKey_ToString(keyLocator->locator.key);
} else if (ccnxKeyLocator_IsKeyLink(keyLocator)) {
locator = ccnxLink_ToString(keyLocator->locator.keyLink);
} else {
char *initString = "not initialised.";
locator = parcMemory_StringDuplicate(initString, strlen(initString));
}
char *string;
int failure = asprintf(&string, "KeyLocator { %s }", locator);
assertTrue(failure > -1, "Error asprintf");
parcMemory_Deallocate((void **) &locator);
result = parcMemory_StringDuplicate(string, strlen(string));
free(string);
}
return result;
}
CCNxLink *
ccnxKeyLocator_GetKeyLink(const CCNxKeyLocator *keyLocator)
{
assertTrue(keyLocator->type == CCNxKeyLocatorType_Link, "Key Locator must be of type CCNxKeyLocatorType_Link");
if (keyLocator->type == CCNxKeyLocatorType_Link) {
return keyLocator->locator.keyLink;
}
return NULL;
}
PARCKey *
ccnxKeyLocator_GetKey(const CCNxKeyLocator *keyLocator)
{
assertTrue(keyLocator->type == CCNxKeyLocatorType_Key, "Key Locator must be of type CCNxKeyLocatorType_Key");
if (keyLocator->type == CCNxKeyLocatorType_Key) {
return keyLocator->locator.key;
}
return NULL;
}
void
ccnxKeyLocator_AssertValid(const CCNxKeyLocator *keyLocator)
{
assertNotNull(keyLocator, "CCNxKeyLocator pointer was null");
if (ccnxKeyLocator_IsKey(keyLocator)) {
parcKey_AssertValid(keyLocator->locator.key);
} else if (ccnxKeyLocator_IsKeyLink(keyLocator)) {
ccnxLink_AssertValid(keyLocator->locator.keyLink);
} else {
assertTrue(0, "KeyLocator is not one of %s.", "Key or Key Link");
}
}
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