michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim:set ts=2 sw=2 sts=2 et cindent: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef MAR_PRIVATE_H__
michael@0: #define MAR_PRIVATE_H__
michael@0: 
michael@0: #include "limits.h"
michael@0: #include "mozilla/Assertions.h"
michael@0: #include <stdint.h>
michael@0: 
michael@0: #define BLOCKSIZE 4096
michael@0: #define ROUND_UP(n, incr) (((n) / (incr) + 1) * (incr))
michael@0: 
michael@0: #define MAR_ID "MAR1"
michael@0: #define MAR_ID_SIZE 4
michael@0: 
michael@0: /* The signature block comes directly after the header block 
michael@0:    which is 16 bytes */
michael@0: #define SIGNATURE_BLOCK_OFFSET 16
michael@0: 
michael@0: /* Make sure the file is less than 500MB.  We do this to protect against
michael@0:    invalid MAR files. */
michael@0: #define MAX_SIZE_OF_MAR_FILE ((int64_t)524288000)
michael@0: 
michael@0: /* Existing code makes assumptions that the file size is
michael@0:    smaller than LONG_MAX. */
michael@0: MOZ_STATIC_ASSERT(MAX_SIZE_OF_MAR_FILE < ((int64_t)LONG_MAX),
michael@0:                   "max mar file size is too big");
michael@0: 
michael@0: /* We store at most the size up to the signature block + 4 
michael@0:    bytes per BLOCKSIZE bytes */
michael@0: MOZ_STATIC_ASSERT(sizeof(BLOCKSIZE) < \
michael@0:                   (SIGNATURE_BLOCK_OFFSET + sizeof(uint32_t)),
michael@0:                   "BLOCKSIZE is too big");
michael@0: 
michael@0: /* The maximum size of any signature supported by current and future
michael@0:    implementations of the signmar program. */
michael@0: #define MAX_SIGNATURE_LENGTH 2048
michael@0: 
michael@0: /* Each additional block has a unique ID.  
michael@0:    The product information block has an ID of 1. */
michael@0: #define PRODUCT_INFO_BLOCK_ID 1
michael@0: 
michael@0: #define MAR_ITEM_SIZE(namelen) (3*sizeof(uint32_t) + (namelen) + 1)
michael@0: 
michael@0: /* Product Information Block (PIB) constants */
michael@0: #define PIB_MAX_MAR_CHANNEL_ID_SIZE 63
michael@0: #define PIB_MAX_PRODUCT_VERSION_SIZE 31
michael@0: 
michael@0: /* The mar program is compiled as a host bin so we don't have access to NSPR at
michael@0:    runtime.  For that reason we use ntohl, htonl, and define HOST_TO_NETWORK64 
michael@0:    instead of the NSPR equivalents. */
michael@0: #ifdef XP_WIN
michael@0: #include <winsock2.h>
michael@0: #define ftello _ftelli64
michael@0: #define fseeko _fseeki64
michael@0: #else
michael@0: #define _FILE_OFFSET_BITS 64
michael@0: #include <netinet/in.h>
michael@0: #include <unistd.h>
michael@0: #endif
michael@0: 
michael@0: #include <stdio.h>
michael@0: 
michael@0: #define HOST_TO_NETWORK64(x) ( \
michael@0:   ((((uint64_t) x) & 0xFF) << 56) | \
michael@0:   ((((uint64_t) x) >> 8) & 0xFF) << 48) | \
michael@0:   (((((uint64_t) x) >> 16) & 0xFF) << 40) | \
michael@0:   (((((uint64_t) x) >> 24) & 0xFF) << 32) | \
michael@0:   (((((uint64_t) x) >> 32) & 0xFF) << 24) | \
michael@0:   (((((uint64_t) x) >> 40) & 0xFF) << 16) | \
michael@0:   (((((uint64_t) x) >> 48) & 0xFF) << 8) | \
michael@0:   (((uint64_t) x) >> 56)
michael@0: #define NETWORK_TO_HOST64 HOST_TO_NETWORK64
michael@0: 
michael@0: #endif  /* MAR_PRIVATE_H__ */