static void cjson_utils_functions_shouldnt_crash_with_null_pointers(void)
{
cJSON *item = cJSON_CreateString("item");
TEST_ASSERT_NOT_NULL(item);
TEST_ASSERT_NULL(cJSONUtils_GetPointer(item, NULL));
TEST_ASSERT_NULL(cJSONUtils_GetPointer(NULL, "pointer"));
TEST_ASSERT_NULL(cJSONUtils_GetPointerCaseSensitive(NULL, "pointer"));
TEST_ASSERT_NULL(cJSONUtils_GetPointerCaseSensitive(item, NULL));
TEST_ASSERT_NULL(cJSONUtils_GeneratePatches(item, NULL));
TEST_ASSERT_NULL(cJSONUtils_GeneratePatches(NULL, item));
TEST_ASSERT_NULL(cJSONUtils_GeneratePatchesCaseSensitive(item, NULL));
TEST_ASSERT_NULL(cJSONUtils_GeneratePatchesCaseSensitive(NULL, item));
cJSONUtils_AddPatchToArray(item, "path", "add", NULL);
cJSONUtils_AddPatchToArray(item, "path", NULL, item);
cJSONUtils_AddPatchToArray(item, NULL, "add", item);
cJSONUtils_AddPatchToArray(NULL, "path", "add", item);
cJSONUtils_ApplyPatches(item, NULL);
cJSONUtils_ApplyPatches(NULL, item);
cJSONUtils_ApplyPatchesCaseSensitive(item, NULL);
cJSONUtils_ApplyPatchesCaseSensitive(NULL, item);
TEST_ASSERT_NULL(cJSONUtils_MergePatch(item, NULL));
item = cJSON_CreateString("item");
TEST_ASSERT_NULL(cJSONUtils_MergePatchCaseSensitive(item, NULL));
item = cJSON_CreateString("item");
/* these calls are actually valid */
/* cJSONUtils_MergePatch(NULL, item); */
/* cJSONUtils_MergePatchCaseSensitive(NULL, item);*/
/* cJSONUtils_GenerateMergePatch(item, NULL); */
/* cJSONUtils_GenerateMergePatch(NULL, item); */
/* cJSONUtils_GenerateMergePatchCaseSensitive(item, NULL); */
/* cJSONUtils_GenerateMergePatchCaseSensitive(NULL, item); */
TEST_ASSERT_NULL(cJSONUtils_FindPointerFromObjectTo(item, NULL));
TEST_ASSERT_NULL(cJSONUtils_FindPointerFromObjectTo(NULL, item));
cJSONUtils_SortObject(NULL);
cJSONUtils_SortObjectCaseSensitive(NULL);
cJSON_Delete(item);
}
static cJSON *cJSONUtils_PatchDetach(cJSON *object, const unsigned char *path)
{
unsigned char *parentptr = NULL;
unsigned char *childptr = NULL;
cJSON *parent = NULL;
cJSON *ret = NULL;
/* copy path and split it in parent and child */
parentptr = cJSONUtils_strdup(path);
if (parentptr == NULL) {
return NULL;
}
childptr = (unsigned char*)strrchr((char*)parentptr, '/'); /* last '/' */
if (childptr == NULL)
{
free(parentptr);
return NULL;
}
/* split strings */
*childptr++ = '\0';
parent = cJSONUtils_GetPointer(object, (char*)parentptr);
cJSONUtils_InplaceDecodePointerString(childptr);
if (!parent)
{
/* Couldn't find object to remove child from. */
ret = NULL;
}
else if (cJSON_IsArray(parent))
{
ret = cJSON_DetachItemFromArray(parent, atoi((char*)childptr));
}
else if (cJSON_IsObject(parent))
{
ret = cJSON_DetachItemFromObject(parent, (char*)childptr);
}
free(parentptr);
/* return the detachted item */
return ret;
}
static cJSON *cJSONUtils_PatchDetach(cJSON *object, const char *path)
{
char *parentptr = 0;
char *childptr = 0;
cJSON *parent = 0;
cJSON *ret = 0;
/* copy path and split it in parent and child */
parentptr = cJSONUtils_strdup(path);
childptr = strrchr(parentptr, '/'); /* last '/' */
if (childptr)
{
/* split strings */
*childptr++ = '\0';
}
parent = cJSONUtils_GetPointer(object, parentptr);
cJSONUtils_InplaceDecodePointerString(childptr);
if (!parent)
{
/* Couldn't find object to remove child from. */
ret = 0;
}
else if (parent->type == cJSON_Array)
{
ret = cJSON_DetachItemFromArray(parent, atoi(childptr));
}
else if (parent->type == cJSON_Object)
{
ret = cJSON_DetachItemFromObject(parent, childptr);
}
free(parentptr);
/* return the detachted item */
return ret;
}
static int cJSONUtils_ApplyPatch(cJSON *object, cJSON *patch)
{
cJSON *op = 0;
cJSON *path = 0;
cJSON *value = 0;
cJSON *parent = 0;
int opcode = 0;
char *parentptr = 0;
char *childptr = 0;
op = cJSON_GetObjectItem(patch, "op");
path = cJSON_GetObjectItem(patch, "path");
if (!op || !path)
{
/* malformed patch. */
return 2;
}
/* decode operation */
if (!strcmp(op->valuestring, "add"))
{
opcode = 0;
}
else if (!strcmp(op->valuestring, "remove"))
{
opcode = 1;
}
else if (!strcmp(op->valuestring, "replace"))
{
opcode = 2;
}
else if (!strcmp(op->valuestring, "move"))
{
opcode = 3;
}
else if (!strcmp(op->valuestring, "copy"))
{
opcode = 4;
}
else if (!strcmp(op->valuestring, "test"))
{
/* compare value: {...} with the given path */
return cJSONUtils_Compare(cJSONUtils_GetPointer(object, path->valuestring), cJSON_GetObjectItem(patch, "value"));
}
else
{
/* unknown opcode. */
return 3;
}
/* Remove/Replace */
if ((opcode == 1) || (opcode == 2))
{
/* Get rid of old. */
cJSON_Delete(cJSONUtils_PatchDetach(object, path->valuestring));
if (opcode == 1)
{
/* For Remove, this is job done. */
return 0;
}
}
/* Copy/Move uses "from". */
if ((opcode == 3) || (opcode == 4))
{
cJSON *from = cJSON_GetObjectItem(patch, "from");
if (!from)
{
/* missing "from" for copy/move. */
return 4;
}
if (opcode == 3)
{
/* move */
value = cJSONUtils_PatchDetach(object, from->valuestring);
}
if (opcode == 4)
{
/* copy */
value = cJSONUtils_GetPointer(object, from->valuestring);
}
if (!value)
{
/* missing "from" for copy/move. */
return 5;
}
if (opcode == 4)
{
value = cJSON_Duplicate(value, 1);
}
if (!value)
{
/* out of memory for copy/move. */
return 6;
}
}
else /* Add/Replace uses "value". */
{
value = cJSON_GetObjectItem(patch, "value");
if (!value)
{
/* missing "value" for add/replace. */
return 7;
}
value = cJSON_Duplicate(value, 1);
if (!value)
{
/* out of memory for add/replace. */
return 8;
}
}
/* Now, just add "value" to "path". */
/* split pointer in parent and child */
parentptr = cJSONUtils_strdup(path->valuestring);
childptr = strrchr(parentptr, '/');
if (childptr)
{
*childptr++ = '\0';
}
parent = cJSONUtils_GetPointer(object, parentptr);
cJSONUtils_InplaceDecodePointerString(childptr);
/* add, remove, replace, move, copy, test. */
if (!parent)
{
/* Couldn't find object to add to. */
free(parentptr);
cJSON_Delete(value);
return 9;
}
else if (parent->type == cJSON_Array)
{
if (!strcmp(childptr, "-"))
{
cJSON_AddItemToArray(parent, value);
}
else
{
cJSON_InsertItemInArray(parent, atoi(childptr), value);
}
}
else if (parent->type == cJSON_Object)
{
cJSON_DeleteItemFromObject(parent, childptr);
cJSON_AddItemToObject(parent, childptr, value);
}
else
{
cJSON_Delete(value);
}
free(parentptr);
return 0;
}
