--- /dev/null
+/* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
+ *
+ * Libmemcached library
+ *
+ * Copyright (C) 2011 Data Differential, http://datadifferential.com/
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * * The names of its contributors may not be used to endorse or
+ * promote products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+/* -*- Mode: C; tab-width: 2; c-basic-offset: 2; indent-tabs-mode: nil -*- */
+#include <libmemcachedprotocol/common.h>
+
+#include <sys/types.h>
+
+#define ensure(a) if (!(a)) { return false; }
+
+bool memcached_binary_protocol_pedantic_check_request(const protocol_binary_request_header *request)
+{
+ ensure(request->request.magic == PROTOCOL_BINARY_REQ);
+ ensure(request->request.datatype == PROTOCOL_BINARY_RAW_BYTES);
+
+ ensure(request->bytes[6] == 0);
+ ensure(request->bytes[7] == 0);
+
+ uint8_t opcode= request->request.opcode;
+ uint16_t keylen= ntohs(request->request.keylen);
+ uint8_t extlen= request->request.extlen;
+ uint32_t bodylen= ntohl(request->request.bodylen);
+
+ ensure(bodylen >= (keylen + extlen));
+
+ switch (opcode) {
+ case PROTOCOL_BINARY_CMD_GET:
+ case PROTOCOL_BINARY_CMD_GETK:
+ case PROTOCOL_BINARY_CMD_GETKQ:
+ case PROTOCOL_BINARY_CMD_GETQ:
+ ensure(extlen == 0);
+ ensure(keylen > 0);
+ ensure(keylen == bodylen);
+ ensure(request->request.cas == 0);
+ break;
+
+ case PROTOCOL_BINARY_CMD_ADD:
+ case PROTOCOL_BINARY_CMD_ADDQ:
+ /* it makes no sense to run add with a cas value */
+ ensure(request->request.cas == 0);
+ /* FALLTHROUGH */
+ case PROTOCOL_BINARY_CMD_SET:
+ case PROTOCOL_BINARY_CMD_SETQ:
+ case PROTOCOL_BINARY_CMD_REPLACE:
+ case PROTOCOL_BINARY_CMD_REPLACEQ:
+ ensure(keylen > 0);
+ ensure(extlen == 8);
+ break;
+
+ case PROTOCOL_BINARY_CMD_DELETE:
+ case PROTOCOL_BINARY_CMD_DELETEQ:
+ ensure(extlen == 0);
+ ensure(keylen > 0);
+ ensure(keylen == bodylen);
+ break;
+
+ case PROTOCOL_BINARY_CMD_INCREMENT:
+ case PROTOCOL_BINARY_CMD_INCREMENTQ:
+ case PROTOCOL_BINARY_CMD_DECREMENT:
+ case PROTOCOL_BINARY_CMD_DECREMENTQ:
+ ensure(extlen == 20);
+ ensure(keylen > 0);
+ ensure(keylen + extlen == bodylen);
+ break;
+
+ case PROTOCOL_BINARY_CMD_QUIT:
+ case PROTOCOL_BINARY_CMD_QUITQ:
+ case PROTOCOL_BINARY_CMD_NOOP:
+ case PROTOCOL_BINARY_CMD_VERSION:
+ ensure(extlen == 0);
+ ensure(keylen == 0);
+ ensure(bodylen == 0);
+ break;
+
+ case PROTOCOL_BINARY_CMD_FLUSH:
+ case PROTOCOL_BINARY_CMD_FLUSHQ:
+ ensure(extlen == 0 || extlen == 4);
+ ensure(keylen == 0);
+ ensure(bodylen == extlen);
+ break;
+
+ case PROTOCOL_BINARY_CMD_STAT:
+ ensure(extlen == 0);
+ /* May have key, but not value */
+ ensure(keylen == bodylen);
+ break;
+
+ case PROTOCOL_BINARY_CMD_APPEND:
+ case PROTOCOL_BINARY_CMD_APPENDQ:
+ case PROTOCOL_BINARY_CMD_PREPEND:
+ case PROTOCOL_BINARY_CMD_PREPENDQ:
+ ensure(extlen == 0);
+ ensure(keylen > 0);
+ break;
+ default:
+ /* Unknown command */
+ ;
+ }
+
+ return true;
+}
+
+bool memcached_binary_protocol_pedantic_check_response(const protocol_binary_request_header *request,
+ const protocol_binary_response_header *response)
+{
+ ensure(response->response.magic == PROTOCOL_BINARY_RES);
+ ensure(response->response.datatype == PROTOCOL_BINARY_RAW_BYTES);
+ ensure(response->response.opaque == request->request.opaque);
+
+ uint16_t status= ntohs(response->response.status);
+ uint8_t opcode= response->response.opcode;
+
+ if (status == PROTOCOL_BINARY_RESPONSE_SUCCESS)
+ {
+ switch (opcode) {
+ case PROTOCOL_BINARY_CMD_ADDQ:
+ case PROTOCOL_BINARY_CMD_APPENDQ:
+ case PROTOCOL_BINARY_CMD_DECREMENTQ:
+ case PROTOCOL_BINARY_CMD_DELETEQ:
+ case PROTOCOL_BINARY_CMD_FLUSHQ:
+ case PROTOCOL_BINARY_CMD_INCREMENTQ:
+ case PROTOCOL_BINARY_CMD_PREPENDQ:
+ case PROTOCOL_BINARY_CMD_QUITQ:
+ case PROTOCOL_BINARY_CMD_REPLACEQ:
+ case PROTOCOL_BINARY_CMD_SETQ:
+ /* Quiet command shouldn't return on success */
+ return false;
+ default:
+ break;
+ }
+
+ switch (opcode) {
+ case PROTOCOL_BINARY_CMD_ADD:
+ case PROTOCOL_BINARY_CMD_REPLACE:
+ case PROTOCOL_BINARY_CMD_SET:
+ case PROTOCOL_BINARY_CMD_APPEND:
+ case PROTOCOL_BINARY_CMD_PREPEND:
+ ensure(response->response.keylen == 0);
+ ensure(response->response.extlen == 0);
+ ensure(response->response.bodylen == 0);
+ ensure(response->response.cas != 0);
+ break;
+ case PROTOCOL_BINARY_CMD_FLUSH:
+ case PROTOCOL_BINARY_CMD_NOOP:
+ case PROTOCOL_BINARY_CMD_QUIT:
+ case PROTOCOL_BINARY_CMD_DELETE:
+ ensure(response->response.keylen == 0);
+ ensure(response->response.extlen == 0);
+ ensure(response->response.bodylen == 0);
+ ensure(response->response.cas == 0);
+ break;
+
+ case PROTOCOL_BINARY_CMD_DECREMENT:
+ case PROTOCOL_BINARY_CMD_INCREMENT:
+ ensure(response->response.keylen == 0);
+ ensure(response->response.extlen == 0);
+ ensure(ntohl(response->response.bodylen) == 8);
+ ensure(response->response.cas != 0);
+ break;
+
+ case PROTOCOL_BINARY_CMD_STAT:
+ ensure(response->response.extlen == 0);
+ /* key and value exists in all packets except in the terminating */
+ ensure(response->response.cas == 0);
+ break;
+
+ case PROTOCOL_BINARY_CMD_VERSION:
+ ensure(response->response.keylen == 0);
+ ensure(response->response.extlen == 0);
+ ensure(response->response.bodylen != 0);
+ ensure(response->response.cas == 0);
+ break;
+
+ case PROTOCOL_BINARY_CMD_GET:
+ case PROTOCOL_BINARY_CMD_GETQ:
+ ensure(response->response.keylen == 0);
+ ensure(response->response.extlen == 4);
+ ensure(response->response.cas != 0);
+ break;
+
+ case PROTOCOL_BINARY_CMD_GETK:
+ case PROTOCOL_BINARY_CMD_GETKQ:
+ ensure(response->response.keylen != 0);
+ ensure(response->response.extlen == 4);
+ ensure(response->response.cas != 0);
+ break;
+
+ default:
+ /* Undefined command code */
+ break;
+ }
+ }
+ else
+ {
+ ensure(response->response.cas == 0);
+ ensure(response->response.extlen == 0);
+ if (opcode != PROTOCOL_BINARY_CMD_GETK)
+ {
+ ensure(response->response.keylen == 0);
+ }
+ }
+
+ return true;
+}
projects / awesomized / libmemcached / blobdiff