modules/libmar/src/mar_private.h@b8a032363ba2 (annotated)
modules/libmar/src/mar_private.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim:set ts=2 sw=2 sts=2 et cindent: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | #ifndef MAR_PRIVATE_H__ |
| michael@0 | 8 | #define MAR_PRIVATE_H__ |
| michael@0 | 9 | |
| michael@0 | 10 | #include "limits.h" |
| michael@0 | 11 | #include "mozilla/Assertions.h" |
| michael@0 | 12 | #include <stdint.h> |
| michael@0 | 13 | |
| michael@0 | 14 | #define BLOCKSIZE 4096 |
| michael@0 | 15 | #define ROUND_UP(n, incr) (((n) / (incr) + 1) * (incr)) |
| michael@0 | 16 | |
| michael@0 | 17 | #define MAR_ID "MAR1" |
| michael@0 | 18 | #define MAR_ID_SIZE 4 |
| michael@0 | 19 | |
| michael@0 | 20 | /* The signature block comes directly after the header block |
| michael@0 | 21 | which is 16 bytes */ |
| michael@0 | 22 | #define SIGNATURE_BLOCK_OFFSET 16 |
| michael@0 | 23 | |
| michael@0 | 24 | /* Make sure the file is less than 500MB. We do this to protect against |
| michael@0 | 25 | invalid MAR files. */ |
| michael@0 | 26 | #define MAX_SIZE_OF_MAR_FILE ((int64_t)524288000) |
| michael@0 | 27 | |
| michael@0 | 28 | /* Existing code makes assumptions that the file size is |
| michael@0 | 29 | smaller than LONG_MAX. */ |
| michael@0 | 30 | MOZ_STATIC_ASSERT(MAX_SIZE_OF_MAR_FILE < ((int64_t)LONG_MAX), |
| michael@0 | 31 | "max mar file size is too big"); |
| michael@0 | 32 | |
| michael@0 | 33 | /* We store at most the size up to the signature block + 4 |
| michael@0 | 34 | bytes per BLOCKSIZE bytes */ |
| michael@0 | 35 | MOZ_STATIC_ASSERT(sizeof(BLOCKSIZE) < \ |
| michael@0 | 36 | (SIGNATURE_BLOCK_OFFSET + sizeof(uint32_t)), |
| michael@0 | 37 | "BLOCKSIZE is too big"); |
| michael@0 | 38 | |
| michael@0 | 39 | /* The maximum size of any signature supported by current and future |
| michael@0 | 40 | implementations of the signmar program. */ |
| michael@0 | 41 | #define MAX_SIGNATURE_LENGTH 2048 |
| michael@0 | 42 | |
| michael@0 | 43 | /* Each additional block has a unique ID. |
| michael@0 | 44 | The product information block has an ID of 1. */ |
| michael@0 | 45 | #define PRODUCT_INFO_BLOCK_ID 1 |
| michael@0 | 46 | |
| michael@0 | 47 | #define MAR_ITEM_SIZE(namelen) (3*sizeof(uint32_t) + (namelen) + 1) |
| michael@0 | 48 | |
| michael@0 | 49 | /* Product Information Block (PIB) constants */ |
| michael@0 | 50 | #define PIB_MAX_MAR_CHANNEL_ID_SIZE 63 |
| michael@0 | 51 | #define PIB_MAX_PRODUCT_VERSION_SIZE 31 |
| michael@0 | 52 | |
| michael@0 | 53 | /* The mar program is compiled as a host bin so we don't have access to NSPR at |
| michael@0 | 54 | runtime. For that reason we use ntohl, htonl, and define HOST_TO_NETWORK64 |
| michael@0 | 55 | instead of the NSPR equivalents. */ |
| michael@0 | 56 | #ifdef XP_WIN |
| michael@0 | 57 | #include <winsock2.h> |
| michael@0 | 58 | #define ftello _ftelli64 |
| michael@0 | 59 | #define fseeko _fseeki64 |
| michael@0 | 60 | #else |
| michael@0 | 61 | #define _FILE_OFFSET_BITS 64 |
| michael@0 | 62 | #include <netinet/in.h> |
| michael@0 | 63 | #include <unistd.h> |
| michael@0 | 64 | #endif |
| michael@0 | 65 | |
| michael@0 | 66 | #include <stdio.h> |
| michael@0 | 67 | |
| michael@0 | 68 | #define HOST_TO_NETWORK64(x) ( \ |
| michael@0 | 69 | ((((uint64_t) x) & 0xFF) << 56) | \ |
| michael@0 | 70 | ((((uint64_t) x) >> 8) & 0xFF) << 48) | \ |
| michael@0 | 71 | (((((uint64_t) x) >> 16) & 0xFF) << 40) | \ |
| michael@0 | 72 | (((((uint64_t) x) >> 24) & 0xFF) << 32) | \ |
| michael@0 | 73 | (((((uint64_t) x) >> 32) & 0xFF) << 24) | \ |
| michael@0 | 74 | (((((uint64_t) x) >> 40) & 0xFF) << 16) | \ |
| michael@0 | 75 | (((((uint64_t) x) >> 48) & 0xFF) << 8) | \ |
| michael@0 | 76 | (((uint64_t) x) >> 56) |
| michael@0 | 77 | #define NETWORK_TO_HOST64 HOST_TO_NETWORK64 |
| michael@0 | 78 | |
| michael@0 | 79 | #endif /* MAR_PRIVATE_H__ */ |
