hb-open-type-private.hh revision f9b37727985191c9b4aedb0e9835736027e59260
164aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod/* 2f9b37727985191c9b4aedb0e9835736027e59260Behdad Esfahbod * Copyright (C) 2007,2008,2009,2010 Red Hat, Inc. 364aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * 464aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * This is part of HarfBuzz, an OpenType Layout engine library. 564aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * 664aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * Permission is hereby granted, without written agreement and without 764aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * license or royalty fees, to use, copy, modify, and distribute this 864aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * software and its documentation for any purpose, provided that the 964aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * above copyright notice and the following two paragraphs appear in 1064aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * all copies of this software. 1164aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * 1264aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 1364aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 1464aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 1564aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 1664aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * DAMAGE. 1764aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * 1864aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 1964aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 2064aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 2164aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 2264aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 2364aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * 2464aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * Red Hat Author(s): Behdad Esfahbod 2564aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod */ 2664aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod 275f5b24f99f52bbc922e238b65c06061ba07c8548Behdad Esfahbod#ifndef HB_OPEN_TYPES_PRIVATE_HH 285f5b24f99f52bbc922e238b65c06061ba07c8548Behdad Esfahbod#define HB_OPEN_TYPES_PRIVATE_HH 2912c4568c680ea2b9b98a16a8b7402ca185c90ef6Behdad Esfahbod 302098a021a826e76ee27d5db74e32738d7d1c3d30Behdad Esfahbod#include "hb-private.h" 3112c4568c680ea2b9b98a16a8b7402ca185c90ef6Behdad Esfahbod 3270de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod#include "hb-blob.h" 3370de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod 34a16ecbf0564a6e2576da22c12827f3c0719da549Behdad Esfahbod 35706ab25a4cb043d46e6088aa0a7184ee200276c9Behdad Esfahbod#define NO_INDEX ((unsigned int) 0xFFFF) 365a0b791184cf6ef39eae0570e14aca21abc32845Behdad Esfahbod 37706ab25a4cb043d46e6088aa0a7184ee200276c9Behdad Esfahbod 38196598bbccff08415ff5192314cba044df258cadBehdad Esfahbod/* 39196598bbccff08415ff5192314cba044df258cadBehdad Esfahbod * Casts 40196598bbccff08415ff5192314cba044df258cadBehdad Esfahbod */ 41196598bbccff08415ff5192314cba044df258cadBehdad Esfahbod 422b5a59c277f4c5bf7aac9a9005054763e322e02dBehdad Esfahbod#define CONST_CHARP(X) (reinterpret_cast<const char *>(X)) 432b5a59c277f4c5bf7aac9a9005054763e322e02dBehdad Esfahbod#define DECONST_CHARP(X) ((char *)reinterpret_cast<const char *>(X)) 442b5a59c277f4c5bf7aac9a9005054763e322e02dBehdad Esfahbod#define CHARP(X) (reinterpret_cast<char *>(X)) 452b5a59c277f4c5bf7aac9a9005054763e322e02dBehdad Esfahbod 462b5a59c277f4c5bf7aac9a9005054763e322e02dBehdad Esfahbod#define CONST_CAST(T,X,Ofs) (*(reinterpret_cast<const T *>(CONST_CHARP(&(X)) + Ofs))) 472b5a59c277f4c5bf7aac9a9005054763e322e02dBehdad Esfahbod#define DECONST_CAST(T,X,Ofs) (*(reinterpret_cast<T *>((char *)CONST_CHARP(&(X)) + Ofs))) 482b5a59c277f4c5bf7aac9a9005054763e322e02dBehdad Esfahbod#define CAST(T,X,Ofs) (*(reinterpret_cast<T *>(CHARP(&(X)) + Ofs))) 49196598bbccff08415ff5192314cba044df258cadBehdad Esfahbod 50284899ccbe79fda7405ab09d3092fc25fd89e810Behdad Esfahbod#define CONST_NEXT(T,X) (*(reinterpret_cast<const T *>(CONST_CHARP(&(X)) + (X).get_size ()))) 51284899ccbe79fda7405ab09d3092fc25fd89e810Behdad Esfahbod#define NEXT(T,X) (*(reinterpret_cast<T *>(CHARP(&(X)) + (X).get_size ()))) 5270de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod 534b8487d83e0c10076a6c573cb3487790ce366607Behdad Esfahbod#define CONST_ARRAY_AFTER(T,X) ((reinterpret_cast<const T *>(CONST_CHARP(&(X)) + X.get_size ()))) 544b8487d83e0c10076a6c573cb3487790ce366607Behdad Esfahbod#define ARRAY_AFTER(T,X) ((reinterpret_cast<T *>(CHARP(&(X)) + X.get_size ()))) 55d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod 5670de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod/* 57600e5eb80f553ea8eb862e6784133574c74ca513Behdad Esfahbod * Class features 58600e5eb80f553ea8eb862e6784133574c74ca513Behdad Esfahbod */ 59600e5eb80f553ea8eb862e6784133574c74ca513Behdad Esfahbod 608b8358033184198ff638ee1379093717596e162dBehdad Esfahbod 618b8358033184198ff638ee1379093717596e162dBehdad Esfahbod/* Null objects */ 628b8358033184198ff638ee1379093717596e162dBehdad Esfahbod 638b8358033184198ff638ee1379093717596e162dBehdad Esfahbod/* Global nul-content Null pool. Enlarge as necessary. */ 64ecd2e996d2137fef30011a41dd57ea45f9a796deBehdad Esfahbodstatic const void *NullPool[32 / sizeof (void *)]; 658b8358033184198ff638ee1379093717596e162dBehdad Esfahbod 668b8358033184198ff638ee1379093717596e162dBehdad Esfahbod/* Generic template for nul-content sizeof-sized Null objects. */ 678b8358033184198ff638ee1379093717596e162dBehdad Esfahbodtemplate <typename Type> 6860d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbodstruct Null 6960d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod{ 70f8dc67b3c24dfc805da756a73cb217b36e16b4b8Behdad Esfahbod ASSERT_STATIC (sizeof (Type) <= sizeof (NullPool)); 718b5346130425c7c101f6ff2432874ba2fd372edcBehdad Esfahbod static inline const Type &get () { return CONST_CAST (Type, *NullPool, 0); } 728b8358033184198ff638ee1379093717596e162dBehdad Esfahbod}; 738b8358033184198ff638ee1379093717596e162dBehdad Esfahbod 748b8358033184198ff638ee1379093717596e162dBehdad Esfahbod/* Specializaiton for arbitrary-content arbitrary-sized Null objects. */ 758b8358033184198ff638ee1379093717596e162dBehdad Esfahbod#define DEFINE_NULL_DATA(Type, size, data) \ 76cc6c644ff2af5f6669b6ec100ff13e904872b21cBehdad Esfahbodstatic const char _Null##Type[size] = data; \ 778b8358033184198ff638ee1379093717596e162dBehdad Esfahbodtemplate <> \ 7860d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbodstruct Null <Type> \ 7960d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod{ \ 808b5346130425c7c101f6ff2432874ba2fd372edcBehdad Esfahbod static inline const Type &get () { return CONST_CAST (Type, *_Null##Type, 0); } \ 818b8358033184198ff638ee1379093717596e162dBehdad Esfahbod} 828b8358033184198ff638ee1379093717596e162dBehdad Esfahbod 838b8358033184198ff638ee1379093717596e162dBehdad Esfahbod/* Accessor macro. */ 848b8358033184198ff638ee1379093717596e162dBehdad Esfahbod#define Null(Type) (Null<Type>::get()) 858b8358033184198ff638ee1379093717596e162dBehdad Esfahbod 868b8358033184198ff638ee1379093717596e162dBehdad Esfahbod 87600e5eb80f553ea8eb862e6784133574c74ca513Behdad Esfahbod/* get_for_data() is a static class method returning a reference to an 88600e5eb80f553ea8eb862e6784133574c74ca513Behdad Esfahbod * instance of Type located at the input data location. It's just a 8954e5aac5e2947d4e2864c6f2987e4d275da73100Behdad Esfahbod * fancy, NULL-safe, cast! */ 90fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod#define STATIC_DEFINE_GET_FOR_DATA(Type) \ 9160d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod static inline const Type& get_for_data (const char *data) \ 9260d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod { \ 938b8358033184198ff638ee1379093717596e162dBehdad Esfahbod if (HB_UNLIKELY (data == NULL)) return Null(Type); \ 948b5346130425c7c101f6ff2432874ba2fd372edcBehdad Esfahbod return CONST_CAST (Type, *data, 0); \ 95212aba6189d7aaac0bab169b77ae6bdab16800a5Behdad Esfahbod } 96212aba6189d7aaac0bab169b77ae6bdab16800a5Behdad Esfahbod/* Like get_for_data(), but checks major version first. */ 97cd3827ee567612c5500206b62840702fc956e0f5Behdad Esfahbod#define STATIC_DEFINE_GET_FOR_DATA_CHECK_MAJOR_VERSION(Type, MajorMin, MajorMax) \ 98212aba6189d7aaac0bab169b77ae6bdab16800a5Behdad Esfahbod static inline const Type& get_for_data (const char *data) \ 99212aba6189d7aaac0bab169b77ae6bdab16800a5Behdad Esfahbod { \ 100212aba6189d7aaac0bab169b77ae6bdab16800a5Behdad Esfahbod if (HB_UNLIKELY (data == NULL)) return Null(Type); \ 1018b5346130425c7c101f6ff2432874ba2fd372edcBehdad Esfahbod const Type& t = CONST_CAST (Type, *data, 0); \ 102cd3827ee567612c5500206b62840702fc956e0f5Behdad Esfahbod if (HB_UNLIKELY (t.version.major < MajorMin || t.version.major > MajorMax)) return Null(Type); \ 103212aba6189d7aaac0bab169b77ae6bdab16800a5Behdad Esfahbod return t; \ 104212aba6189d7aaac0bab169b77ae6bdab16800a5Behdad Esfahbod } 105600e5eb80f553ea8eb862e6784133574c74ca513Behdad Esfahbod 106600e5eb80f553ea8eb862e6784133574c74ca513Behdad Esfahbod 107577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod/* 108577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod * Sanitize 109577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod */ 110577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 11195e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#ifndef HB_DEBUG_SANITIZE 11295e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#define HB_DEBUG_SANITIZE HB_DEBUG 11395e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#endif 11495e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod 11595e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 116d0351314cd29fbdf0efb5c7f89a569648f7a7fc7Behdad Esfahbod#include <stdio.h> 1170e206de98621ed8a55824b42e9e6bf320f4c6cc8Behdad Esfahbod#define TRACE_SANITIZE_ARG_DEF , unsigned int sanitize_depth HB_GNUC_UNUSED 1183e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod#define TRACE_SANITIZE_ARG , sanitize_depth + 1 1193e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod#define TRACE_SANITIZE_ARG_INIT , 1 1203e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod#define TRACE_SANITIZE() \ 121b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod HB_STMT_START { \ 12295e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod if (sanitize_depth < HB_DEBUG_SANITIZE) \ 1237acb389569cf99c6bae9db31a8ed7c7007fbb566Behdad Esfahbod fprintf (stderr, "SANITIZE(%p) %-*d-> %s\n", \ 124d5943407a4251cb947fbfc130c0facb2f6216bd6Behdad Esfahbod (CONST_CHARP (this) == CONST_CHARP (&NullPool)) ? 0 : this, \ 1259b76a290a94f2603f3cb9498ae976125347cf54bBehdad Esfahbod sanitize_depth, sanitize_depth, \ 1267acb389569cf99c6bae9db31a8ed7c7007fbb566Behdad Esfahbod __PRETTY_FUNCTION__); \ 127b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod } HB_STMT_END 128b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod#else 1293e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod#define TRACE_SANITIZE_ARG_DEF 1303e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod#define TRACE_SANITIZE_ARG 1313e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod#define TRACE_SANITIZE_ARG_INIT 1323e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod#define TRACE_SANITIZE() HB_STMT_START {} HB_STMT_END 133b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod#endif 134b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod 13541895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod#define SANITIZE_ARG_DEF \ 1363e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod hb_sanitize_context_t *context TRACE_SANITIZE_ARG_DEF 13741895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod#define SANITIZE_ARG \ 1383e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod context TRACE_SANITIZE_ARG 13941895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod#define SANITIZE_ARG_INIT \ 1403e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod &context TRACE_SANITIZE_ARG_INIT 14141895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod 142577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbodtypedef struct _hb_sanitize_context_t hb_sanitize_context_t; 143577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbodstruct _hb_sanitize_context_t 144577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod{ 145577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod const char *start, *end; 146577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod int edit_count; 147577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod hb_blob_t *blob; 148577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod}; 149577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 150577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbodstatic HB_GNUC_UNUSED void 1514e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod_hb_sanitize_init (hb_sanitize_context_t *context, 1524e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod hb_blob_t *blob) 153577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod{ 154577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod context->blob = blob; 155577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod context->start = hb_blob_lock (blob); 156577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod context->end = context->start + hb_blob_get_length (blob); 157577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod context->edit_count = 0; 1584f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod 15995e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 1607acb389569cf99c6bae9db31a8ed7c7007fbb566Behdad Esfahbod fprintf (stderr, "sanitize %p init [%p..%p] (%u bytes)\n", 1617f96b39a9d5a81ba77e0c3dea8fe2cdb9957c4c7Behdad Esfahbod context->blob, context->start, context->end, context->end - context->start); 1624f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod#endif 163577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod} 164577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 165577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbodstatic HB_GNUC_UNUSED void 1664e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod_hb_sanitize_fini (hb_sanitize_context_t *context, 1674e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod bool unlock) 168577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod{ 16995e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 1707acb389569cf99c6bae9db31a8ed7c7007fbb566Behdad Esfahbod fprintf (stderr, "sanitize %p fini [%p..%p] %u edit requests\n", 1717acb389569cf99c6bae9db31a8ed7c7007fbb566Behdad Esfahbod context->blob, context->start, context->end, context->edit_count); 1724f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod#endif 1734f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod 174577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod if (unlock) 175577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod hb_blob_unlock (context->blob); 176577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod} 177577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 1784f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbodstatic HB_GNUC_UNUSED inline bool 17941895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod_hb_sanitize_check (SANITIZE_ARG_DEF, 18041895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod const char *base, 18141895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod unsigned int len) 18241895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod{ 183ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod bool ret = context->start <= base && 184ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod base <= context->end && 185ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod (unsigned int) (context->end - base) >= len; 186ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod 18795e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 18895e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod if (sanitize_depth < HB_DEBUG_SANITIZE) \ 189ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod fprintf (stderr, "SANITIZE(%p) %-*d-> check [%p..%p] (%d bytes) in [%p..%p] -> %s\n", \ 190ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod base, 191ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod sanitize_depth, sanitize_depth, 192ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod base, base+len, len, 193ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod context->start, context->end, 194ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod ret ? "pass" : "FAIL"); 195ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod#endif 196ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod return ret; 19741895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod} 19841895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod 19941895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbodstatic HB_GNUC_UNUSED inline bool 200815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod_hb_sanitize_array (SANITIZE_ARG_DEF, 201815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod const char *base, 202815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod unsigned int record_size, 203815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod unsigned int len) 204815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod{ 205815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod bool overflows = len >= ((unsigned int) -1) / record_size; 206815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod 20795e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 20895e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod if (sanitize_depth < HB_DEBUG_SANITIZE) \ 209815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod fprintf (stderr, "SANITIZE(%p) %-*d-> array [%p..%p] (%d*%d=%ld bytes) in [%p..%p] -> %s\n", \ 210815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod base, 211815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod sanitize_depth, sanitize_depth, 212815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod base, base + (record_size * len), record_size, len, (unsigned long) record_size * len, 213815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod context->start, context->end, 214815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod !overflows ? "does not overflow" : "OVERFLOWS FAIL"); 215815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod#endif 216815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod return HB_LIKELY (!overflows) && _hb_sanitize_check (SANITIZE_ARG, base, record_size * len); 217815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod} 218815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod 219815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbodstatic HB_GNUC_UNUSED inline bool 22041895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod_hb_sanitize_edit (SANITIZE_ARG_DEF, 2214f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod const char *base HB_GNUC_UNUSED, 2224f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod unsigned int len HB_GNUC_UNUSED) 223577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod{ 224977eeb714454630bd045bb11f58ff6397f10b143Behdad Esfahbod bool perm = hb_blob_try_writable_inplace (context->blob); 225f4b58d3fc2956a9d1b6178588d809c781f7a5c0cBehdad Esfahbod context->edit_count++; 2264f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod 22795e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 228ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod fprintf (stderr, "SANITIZE(%p) %-*d-> edit(%u) [%p..%p] (%d bytes) in [%p..%p] -> %s\n", \ 229ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod base, 230ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod sanitize_depth, sanitize_depth, 231ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod context->edit_count, 232ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod base, base+len, len, 233ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod context->start, context->end, 234ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod perm ? "granted" : "REJECTED"); 2354f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod#endif 2364f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod return perm; 237577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod} 238577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 239577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE(X) HB_LIKELY ((X).sanitize (SANITIZE_ARG)) 240577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE2(X,Y) (SANITIZE (X) && SANITIZE (Y)) 241577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 242577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE_THIS(X) HB_LIKELY ((X).sanitize (SANITIZE_ARG, CONST_CHARP(this))) 243577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE_THIS2(X,Y) (SANITIZE_THIS (X) && SANITIZE_THIS (Y)) 244577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE_THIS3(X,Y,Z) (SANITIZE_THIS (X) && SANITIZE_THIS (Y) && SANITIZE_THIS(Z)) 245577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 246577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE_BASE(X,B) HB_LIKELY ((X).sanitize (SANITIZE_ARG, B)) 247577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE_BASE2(X,Y,B) (SANITIZE_BASE (X,B) && SANITIZE_BASE (Y,B)) 248577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 249577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE_SELF() SANITIZE_OBJ (*this) 250577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE_OBJ(X) SANITIZE_MEM(&(X), sizeof (X)) 251577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE_GET_SIZE() SANITIZE_SELF() && SANITIZE_MEM (this, this->get_size ()) 252577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 253d0b657379bbe63602953412d6bc944b2a0f430ebBehdad Esfahbod/* TODO Optimize this if L is fixed (gcc magic) */ 25441895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod#define SANITIZE_MEM(B,L) HB_LIKELY (_hb_sanitize_check (SANITIZE_ARG, CONST_CHARP(B), (L))) 255577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 256815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod#define SANITIZE_ARRAY(A,S,L) HB_LIKELY (_hb_sanitize_array (SANITIZE_ARG, CONST_CHARP(A), S, L)) 257815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod 258d0b657379bbe63602953412d6bc944b2a0f430ebBehdad Esfahbod#define NEUTER(Var, Val) \ 259d0b657379bbe63602953412d6bc944b2a0f430ebBehdad Esfahbod (SANITIZE_OBJ (Var) && \ 26041895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod _hb_sanitize_edit (SANITIZE_ARG, CONST_CHARP(&(Var)), sizeof (Var)) && \ 261807b8aa486753474e05e09f4fcca8ac94021b97cBehdad Esfahbod ((Var).set (Val), true)) 262577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 263577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 2644e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod/* Template to sanitize an object. */ 2654e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbodtemplate <typename Type> 2664e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbodstruct Sanitizer 2674e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod{ 2684e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod static hb_blob_t *sanitize (hb_blob_t *blob) { 2694e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod hb_sanitize_context_t context; 2704e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod bool sane; 2714e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 272d0b657379bbe63602953412d6bc944b2a0f430ebBehdad Esfahbod /* TODO is_sane() stuff */ 2734e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 2744e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod retry: 27595e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 2767acb389569cf99c6bae9db31a8ed7c7007fbb566Behdad Esfahbod fprintf (stderr, "Sanitizer %p start %s\n", blob, __PRETTY_FUNCTION__); 2774f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod#endif 2784f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod 2794e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod _hb_sanitize_init (&context, blob); 2804e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 2818cd6fa28d1b77100491519b8dedb2e113508bf59Behdad Esfahbod Type *t = &CAST (Type, *DECONST_CHARP(context.start), 0); 2824e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 283b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod sane = t->sanitize (SANITIZE_ARG_INIT); 2844e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod if (sane) { 2854e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod if (context.edit_count) { 28695e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 2870d77ab8a73f57c9fca4c6f9301dae394d79526e3Behdad Esfahbod fprintf (stderr, "Sanitizer %p passed first round with %d edits; going a second round %s\n", 2880d77ab8a73f57c9fca4c6f9301dae394d79526e3Behdad Esfahbod blob, context.edit_count, __PRETTY_FUNCTION__); 2890d77ab8a73f57c9fca4c6f9301dae394d79526e3Behdad Esfahbod#endif 2908b5346130425c7c101f6ff2432874ba2fd372edcBehdad Esfahbod /* sanitize again to ensure no toe-stepping */ 2914e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod context.edit_count = 0; 292b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod sane = t->sanitize (SANITIZE_ARG_INIT); 2934e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod if (context.edit_count) { 29495e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 295ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod fprintf (stderr, "Sanitizer %p requested %d edits in second round; FAILLING %s\n", 2960d77ab8a73f57c9fca4c6f9301dae394d79526e3Behdad Esfahbod blob, context.edit_count, __PRETTY_FUNCTION__); 2970d77ab8a73f57c9fca4c6f9301dae394d79526e3Behdad Esfahbod#endif 2984e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod sane = false; 2994e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3004e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3014e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod _hb_sanitize_fini (&context, true); 3024e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } else { 3034f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod unsigned int edit_count = context.edit_count; 3044e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod _hb_sanitize_fini (&context, true); 305977eeb714454630bd045bb11f58ff6397f10b143Behdad Esfahbod if (edit_count && !hb_blob_is_writable (blob) && hb_blob_try_writable (blob)) { 306977eeb714454630bd045bb11f58ff6397f10b143Behdad Esfahbod /* ok, we made it writable by relocating. try again */ 30795e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 3087acb389569cf99c6bae9db31a8ed7c7007fbb566Behdad Esfahbod fprintf (stderr, "Sanitizer %p retry %s\n", blob, __PRETTY_FUNCTION__); 3094f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod#endif 3104e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod goto retry; 3114e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3124e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3134e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 31495e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 315ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod fprintf (stderr, "Sanitizer %p %s %s\n", blob, sane ? "passed" : "FAILED", __PRETTY_FUNCTION__); 3164f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod#endif 3174e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod if (sane) 3184e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod return blob; 3194e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod else { 3204e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod hb_blob_destroy (blob); 3214e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod return hb_blob_create_empty (); 3224e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3234e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3244e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 325d60bb8ca2ae6edf29b2227b56c57f0d16879370bBehdad Esfahbod static const Type& lock_instance (hb_blob_t *blob) { 3264e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod return Type::get_for_data (hb_blob_lock (blob)); 3274e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3284e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod}; 3294e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 3302d15e72c75931398db5e027e660f1320bb979117Behdad Esfahbod 331b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod/* 332b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod * 333bff3c0fde5da04a70d1f7aeeb9fa2a75fe5c07f6Behdad Esfahbod * The OpenType Font File: Data Types 334b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod */ 335b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod 336b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod 337b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod/* "The following data types are used in the OpenType font file. 338b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod * All OpenType fonts use Motorola-style byte ordering (Big Endian):" */ 339b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod 3405f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod/* 3415f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod * Int types 3425f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod */ 3435f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod 3449e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod/* TODO On machines that allow unaligned access, use this version. */ 3459e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod#define _DEFINE_INT_TYPE1_UNALIGNED(NAME, TYPE, BIG_ENDIAN, BYTES) \ 34660d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod struct NAME \ 34760d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod { \ 348807b8aa486753474e05e09f4fcca8ac94021b97cBehdad Esfahbod inline NAME& set (TYPE i) { (TYPE&) v = BIG_ENDIAN (i); return *this; } \ 34920cc86b3592db33731de671f008d7d222776be49Behdad Esfahbod inline operator TYPE(void) const { return BIG_ENDIAN ((TYPE&) v); } \ 350f9b37727985191c9b4aedb0e9835736027e59260Behdad Esfahbod inline bool operator== (const NAME &o) const { return (TYPE&) v == (TYPE&) o.v; } \ 351b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { \ 3523e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); \ 353b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod return SANITIZE_SELF (); \ 354b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod } \ 3559e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod private: unsigned char v[BYTES]; \ 3569e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod }; \ 3579e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod ASSERT_SIZE (NAME, BYTES) 3589e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod 3599e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod#define DEFINE_INT_TYPE1(NAME, TYPE, BIG_ENDIAN, BYTES) \ 3609e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod struct NAME \ 3619e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod { \ 3624b8487d83e0c10076a6c573cb3487790ce366607Behdad Esfahbod static inline unsigned int get_size () { return BYTES; } \ 363807b8aa486753474e05e09f4fcca8ac94021b97cBehdad Esfahbod inline NAME& set (TYPE i) { BIG_ENDIAN##_put_unaligned(v, i); return *this; } \ 3649e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod inline operator TYPE(void) const { return BIG_ENDIAN##_get_unaligned (v); } \ 365f9b37727985191c9b4aedb0e9835736027e59260Behdad Esfahbod inline bool operator== (const NAME &o) const { return BIG_ENDIAN##_cmp_unaligned (v, o.v); } \ 3669e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { \ 3673e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); \ 3689e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod return SANITIZE_SELF (); \ 3699e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod } \ 3709e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod private: unsigned char v[BYTES]; \ 3715f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod }; \ 37220cc86b3592db33731de671f008d7d222776be49Behdad Esfahbod ASSERT_SIZE (NAME, BYTES) 373df66028781a7609a515980e64396e6f1044d764aBehdad Esfahbod#define DEFINE_INT_TYPE0(NAME, type, b) DEFINE_INT_TYPE1 (NAME, type##_t, hb_be_##type, b) 374df66028781a7609a515980e64396e6f1044d764aBehdad Esfahbod#define DEFINE_INT_TYPE(NAME, u, w) DEFINE_INT_TYPE0 (NAME, u##int##w, (w / 8)) 3755f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod 376b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod 377f85ec1c7da36d2c2c9b1c94a988563697dcc79c9Behdad EsfahbodDEFINE_INT_TYPE (USHORT, u, 16); /* 16-bit unsigned integer. */ 37820cc86b3592db33731de671f008d7d222776be49Behdad EsfahbodDEFINE_INT_TYPE (SHORT, , 16); /* 16-bit signed integer. */ 37920cc86b3592db33731de671f008d7d222776be49Behdad EsfahbodDEFINE_INT_TYPE (ULONG, u, 32); /* 32-bit unsigned integer. */ 38020cc86b3592db33731de671f008d7d222776be49Behdad EsfahbodDEFINE_INT_TYPE (LONG, , 32); /* 32-bit signed integer. */ 3816b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 382bff3c0fde5da04a70d1f7aeeb9fa2a75fe5c07f6Behdad Esfahbod 3836b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod/* Array of four uint8s (length = 32 bits) used to identify a script, language 3846b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod * system, feature, or baseline */ 38520cc86b3592db33731de671f008d7d222776be49Behdad Esfahbodstruct Tag : ULONG 38660d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod{ 3874497af0069a94c69fc1518b1db2c1282721b732aBehdad Esfahbod inline Tag (const Tag &o) { *(ULONG*)this = (ULONG&) o; } 388807b8aa486753474e05e09f4fcca8ac94021b97cBehdad Esfahbod inline Tag (uint32_t i) { (*(ULONG*)this).set (i); } 3894497af0069a94c69fc1518b1db2c1282721b732aBehdad Esfahbod inline Tag (const char *c) { *(ULONG*)this = *(ULONG*)c; } 3904497af0069a94c69fc1518b1db2c1282721b732aBehdad Esfahbod inline bool operator== (const char *c) const { return *(ULONG*)this == *(ULONG*)c; } 391befc022affd2386b3f46cd7d11e4262f6c8bce9fBehdad Esfahbod /* What the char* converters return is NOT nul-terminated. Print using "%.4s" */ 3922b5a59c277f4c5bf7aac9a9005054763e322e02dBehdad Esfahbod inline operator const char* (void) const { return CONST_CHARP(this); } 3932b5a59c277f4c5bf7aac9a9005054763e322e02dBehdad Esfahbod inline operator char* (void) { return CHARP(this); } 394738c54d9caa3affc4b434e56bfb810ff6dc9b0b3Behdad Esfahbod 395738c54d9caa3affc4b434e56bfb810ff6dc9b0b3Behdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { 3963e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 397738c54d9caa3affc4b434e56bfb810ff6dc9b0b3Behdad Esfahbod /* Note: Only accept ASCII-visible tags (mind DEL) 3989b39755d104603d1163738f77637cc1923d4055bBehdad Esfahbod * This is one of the few places (only place?) that we check 3999b39755d104603d1163738f77637cc1923d4055bBehdad Esfahbod * for data integrity, as opposed to just boundary checks. 400738c54d9caa3affc4b434e56bfb810ff6dc9b0b3Behdad Esfahbod */ 401738c54d9caa3affc4b434e56bfb810ff6dc9b0b3Behdad Esfahbod return SANITIZE_SELF () && (((uint32_t) *this) & 0x80808080) == 0; 402738c54d9caa3affc4b434e56bfb810ff6dc9b0b3Behdad Esfahbod } 4036b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod}; 404303fe62824d4e99df554b6bfaacba05d068522fbBehdad EsfahbodASSERT_SIZE (Tag, 4); 405da1097bc3b1995776c205707fd2b17603b804646Behdad Esfahbod#define _NULL_TAG_INIT {' ', ' ', ' ', ' '} 406da1097bc3b1995776c205707fd2b17603b804646Behdad EsfahbodDEFINE_NULL_DATA (Tag, 4, _NULL_TAG_INIT); 407da1097bc3b1995776c205707fd2b17603b804646Behdad Esfahbod#undef _NULL_TAG_INIT 4086b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 4096b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod/* Glyph index number, same as uint16 (length = 16 bits) */ 4106ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbodtypedef USHORT GlyphID; 4116b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 4121f437e6f47fb6c15761021bd2078f31778f2179cBehdad Esfahbod/* Offset to a table, same as uint16 (length = 16 bits), Null offset = 0x0000 */ 4136ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbodtypedef USHORT Offset; 4146ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbod 4156ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbod/* LongOffset to a table, same as uint32 (length = 32 bits), Null offset = 0x00000000 */ 4166ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbodtypedef ULONG LongOffset; 4176ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbod 4186b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 4196b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod/* CheckSum */ 42060d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbodstruct CheckSum : ULONG 42160d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod{ 42260d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod static uint32_t CalcTableChecksum (ULONG *Table, uint32_t Length) 42360d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod { 4246b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod uint32_t Sum = 0L; 4254b8487d83e0c10076a6c573cb3487790ce366607Behdad Esfahbod ULONG *EndPtr = Table+((Length+3) & ~3) / ULONG::get_size (); 4266b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 4276b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod while (Table < EndPtr) 4286b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod Sum += *Table++; 4296b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod return Sum; 4306b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod } 4316b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod}; 4328b8358033184198ff638ee1379093717596e162dBehdad EsfahbodASSERT_SIZE (CheckSum, 4); 4336b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 4346b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 4356b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod/* 4366b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod * Version Numbers 4376b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod */ 4386b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 43987fcdcbe3644da10154688765db2d62eb9ac079aBehdad Esfahbodstruct FixedVersion 44060d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod{ 44109c292e3b688a67fbae67b645d1e6ffcf8d8eb6eBehdad Esfahbod inline operator uint32_t (void) const { return (major << 16) + minor; } 44296908b898476ca5d7da5f386b15be76f9e83d76eBehdad Esfahbod 443cd3827ee567612c5500206b62840702fc956e0f5Behdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { 4443e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 445cd3827ee567612c5500206b62840702fc956e0f5Behdad Esfahbod return SANITIZE_SELF (); 446cd3827ee567612c5500206b62840702fc956e0f5Behdad Esfahbod } 447cd3827ee567612c5500206b62840702fc956e0f5Behdad Esfahbod 4486ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbod USHORT major; 44987fcdcbe3644da10154688765db2d62eb9ac079aBehdad Esfahbod USHORT minor; 4506b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod}; 45187fcdcbe3644da10154688765db2d62eb9ac079aBehdad EsfahbodASSERT_SIZE (FixedVersion, 4); 4526b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 45392b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 45492b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 4555f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod/* 45692b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod * Template subclasses of Offset and LongOffset that do the dereferencing. 45792b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod * Use: (this+memberName) 4585f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod */ 4595f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod 46092b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename OffsetType, typename Type> 46192b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct GenericOffsetTo : OffsetType 46292b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod{ 46392b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod inline const Type& operator() (const void *base) const 46492b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod { 46592b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod unsigned int offset = *this; 46692b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod if (HB_UNLIKELY (!offset)) return Null(Type); 46795639fccc1ef18eadeb737e8b611d1d1f1315fc2Behdad Esfahbod return CONST_CAST(Type, *CONST_CHARP(base), offset); 46892b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod } 46992b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 47020b035dad41247076815a2bbb0346d63058b322fBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, const void *base) { 4713e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 47295528131b5ab9fc9e265ace715832135ebd457a4Behdad Esfahbod if (!SANITIZE_SELF ()) return false; 47392b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod unsigned int offset = *this; 47492b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod if (HB_UNLIKELY (!offset)) return true; 475ac26e2a838d1266bb5f39c43245eb2a52c5e072dBehdad Esfahbod return SANITIZE (CAST(Type, *DECONST_CHARP(base), offset)) || NEUTER (DECONST_CAST(OffsetType,*this,0), 0); 47692b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod } 47720b035dad41247076815a2bbb0346d63058b322fBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, const void *base, const void *base2) { 4783e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 47995528131b5ab9fc9e265ace715832135ebd457a4Behdad Esfahbod if (!SANITIZE_SELF ()) return false; 480b508e5ccd528f3f0f49f545bd5f30a525d5abd5aBehdad Esfahbod unsigned int offset = *this; 481b508e5ccd528f3f0f49f545bd5f30a525d5abd5aBehdad Esfahbod if (HB_UNLIKELY (!offset)) return true; 482b508e5ccd528f3f0f49f545bd5f30a525d5abd5aBehdad Esfahbod return SANITIZE_BASE (CAST(Type, *DECONST_CHARP(base), offset), base2) || NEUTER (DECONST_CAST(OffsetType,*this,0), 0); 483b508e5ccd528f3f0f49f545bd5f30a525d5abd5aBehdad Esfahbod } 48420b035dad41247076815a2bbb0346d63058b322fBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, const void *base, unsigned int user_data) { 4853e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 48695528131b5ab9fc9e265ace715832135ebd457a4Behdad Esfahbod if (!SANITIZE_SELF ()) return false; 48742b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod unsigned int offset = *this; 48842b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod if (HB_UNLIKELY (!offset)) return true; 489ac26e2a838d1266bb5f39c43245eb2a52c5e072dBehdad Esfahbod return SANITIZE_BASE (CAST(Type, *DECONST_CHARP(base), offset), user_data) || NEUTER (DECONST_CAST(OffsetType,*this,0), 0); 49042b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod } 49192b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod}; 49292b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename Base, typename OffsetType, typename Type> 49392b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodinline const Type& operator + (const Base &base, GenericOffsetTo<OffsetType, Type> offset) { return offset (base); } 49492b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 4955f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbodtemplate <typename Type> 49692b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct OffsetTo : GenericOffsetTo<Offset, Type> {}; 49792b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 49892b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename Type> 49992b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct LongOffsetTo : GenericOffsetTo<LongOffset, Type> {}; 500bff3c0fde5da04a70d1f7aeeb9fa2a75fe5c07f6Behdad Esfahbod 501bff3c0fde5da04a70d1f7aeeb9fa2a75fe5c07f6Behdad Esfahbod 50292b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod/* 50392b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod * Array Types 50492b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod */ 50592b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 50692b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename LenType, typename Type> 50792b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct GenericArrayOf 50860d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod{ 509d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod const Type *const_array(void) const { return CONST_ARRAY_AFTER (Type, len); } 510d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod Type *array(void) { return ARRAY_AFTER (Type, len); } 511d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod 51248de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod const Type *const_sub_array (unsigned int start_offset, unsigned int *pcount /* IN/OUT */) const 51348de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod { 51448de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod unsigned int count = len; 51548de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod if (HB_UNLIKELY (start_offset > count)) 51648de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod count = 0; 51748de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod else 51848de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod count -= start_offset; 51948de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod count = MIN (count, *pcount); 52048de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod *pcount = count; 52148de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod return const_array() + start_offset; 52248de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod } 52348de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod 52460d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod inline const Type& operator [] (unsigned int i) const 52560d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod { 5265f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod if (HB_UNLIKELY (i >= len)) return Null(Type); 527d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod return const_array()[i]; 5285f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod } 52960d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod inline unsigned int get_size () const 5304b8487d83e0c10076a6c573cb3487790ce366607Behdad Esfahbod { return len.get_size () + len * Type::get_size (); } 531e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbod 53220b035dad41247076815a2bbb0346d63058b322fBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { 5333e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 534dc9c4d93cd0f3ac991f32df08c1c17fc389054c0Behdad Esfahbod if (!SANITIZE_GET_SIZE()) return false; 5353564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod /* Note: 5363564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod * for non-recursive types, this is not much needed. 5373564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod * But we keep the code to make sure the objects pointed to 5383564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod * do have a simple sanitize(). */ 5393564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod return true; 54070de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod unsigned int count = len; 54170de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 542d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod if (!SANITIZE (array()[i])) 54370de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod return false; 5449bd629ccd064e739789e504c41ad875eed93abbaBehdad Esfahbod return true; 54570de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod } 54620b035dad41247076815a2bbb0346d63058b322fBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, const void *base) { 5473e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 548dc9c4d93cd0f3ac991f32df08c1c17fc389054c0Behdad Esfahbod if (!SANITIZE_GET_SIZE()) return false; 549e6ab2c59ba2d37942ac5fcbfe61d38b7e359ac8cBehdad Esfahbod unsigned int count = len; 550e6ab2c59ba2d37942ac5fcbfe61d38b7e359ac8cBehdad Esfahbod for (unsigned int i = 0; i < count; i++) 551d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod if (!array()[i].sanitize (SANITIZE_ARG, base)) 552e6ab2c59ba2d37942ac5fcbfe61d38b7e359ac8cBehdad Esfahbod return false; 5539bd629ccd064e739789e504c41ad875eed93abbaBehdad Esfahbod return true; 554e6ab2c59ba2d37942ac5fcbfe61d38b7e359ac8cBehdad Esfahbod } 55520b035dad41247076815a2bbb0346d63058b322fBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, const void *base, const void *base2) { 5563e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 557b508e5ccd528f3f0f49f545bd5f30a525d5abd5aBehdad Esfahbod if (!SANITIZE_GET_SIZE()) return false; 558b508e5ccd528f3f0f49f545bd5f30a525d5abd5aBehdad Esfahbod unsigned int count = len; 559b508e5ccd528f3f0f49f545bd5f30a525d5abd5aBehdad Esfahbod for (unsigned int i = 0; i < count; i++) 560d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod if (!array()[i].sanitize (SANITIZE_ARG, base, base2)) 561b508e5ccd528f3f0f49f545bd5f30a525d5abd5aBehdad Esfahbod return false; 5629bd629ccd064e739789e504c41ad875eed93abbaBehdad Esfahbod return true; 563b508e5ccd528f3f0f49f545bd5f30a525d5abd5aBehdad Esfahbod } 56420b035dad41247076815a2bbb0346d63058b322fBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, const void *base, unsigned int user_data) { 5653e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 56642b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod if (!SANITIZE_GET_SIZE()) return false; 56742b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod unsigned int count = len; 56842b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 569d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod if (!array()[i].sanitize (SANITIZE_ARG, base, user_data)) 57042b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod return false; 5719bd629ccd064e739789e504c41ad875eed93abbaBehdad Esfahbod return true; 57242b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod } 57370de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod 57492b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod LenType len; 575d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod/*Type array[VAR];*/ 576e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbod}; 577e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbod 57892b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod/* An array with a USHORT number of elements. */ 57992b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename Type> 58092b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct ArrayOf : GenericArrayOf<USHORT, Type> {}; 58192b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 58292b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod/* An array with a ULONG number of elements. */ 58392b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename Type> 58492b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct LongArrayOf : GenericArrayOf<ULONG, Type> {}; 58592b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 58692b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod/* Array of Offset's */ 58792b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename Type> 58892b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct OffsetArrayOf : ArrayOf<OffsetTo<Type> > {}; 58992b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 59092b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod/* Array of LongOffset's */ 59192b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename Type> 59292b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct LongOffsetArrayOf : ArrayOf<LongOffsetTo<Type> > {}; 59392b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 59492b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod/* LongArray of LongOffset's */ 59592b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename Type> 59692b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct LongOffsetLongArrayOf : LongArrayOf<LongOffsetTo<Type> > {}; 59792b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 59880e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod/* Array of offsets relative to the beginning of the array itself. */ 59980e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbodtemplate <typename Type> 60080e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbodstruct OffsetListOf : OffsetArrayOf<Type> 60180e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod{ 60280e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod inline const Type& operator [] (unsigned int i) const 60380e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod { 60480e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod if (HB_UNLIKELY (i >= this->len)) return Null(Type); 605d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod return this+this->const_array()[i]; 60680e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod } 60780e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod 60880e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { 6093e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 61080e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod return OffsetArrayOf<Type>::sanitize (SANITIZE_ARG, CONST_CHARP(this)); 61180e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod } 61280e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, unsigned int user_data) { 6133e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 61480e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod return OffsetArrayOf<Type>::sanitize (SANITIZE_ARG, CONST_CHARP(this), user_data); 61580e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod } 61680e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod}; 61780e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod 61880e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod 619e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbod/* An array with a USHORT number of elements, 620e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbod * starting at second element. */ 621e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbodtemplate <typename Type> 62260d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbodstruct HeadlessArrayOf 62360d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod{ 624d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod const Type *const_array(void) const { return CONST_ARRAY_AFTER (Type, len); } 625d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod Type *array(void) { return ARRAY_AFTER (Type, len); } 626d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod 62760d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod inline const Type& operator [] (unsigned int i) const 62860d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod { 629e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbod if (HB_UNLIKELY (i >= len || !i)) return Null(Type); 630d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod return const_array()[i-1]; 631e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbod } 63260d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod inline unsigned int get_size () const 6334b8487d83e0c10076a6c573cb3487790ce366607Behdad Esfahbod { return len.get_size () + (len ? len - 1 : 0) * Type::get_size (); } 6345f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod 63520b035dad41247076815a2bbb0346d63058b322fBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { 6363e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 637dc9c4d93cd0f3ac991f32df08c1c17fc389054c0Behdad Esfahbod if (!SANITIZE_GET_SIZE()) return false; 6383564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod /* Note: 6393564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod * for non-recursive types, this is not much needed. 6403564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod * But we keep the code to make sure the objects pointed to 6413564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod * do have a simple sanitize(). */ 6423564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod return true; 64315164d9258a74122a4db748d35532bd72c47cec2Behdad Esfahbod unsigned int count = len ? len - 1 : 0; 644d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod Type *a = array(); 64570de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 646d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod if (!SANITIZE (a[i])) 64770de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod return false; 6489bd629ccd064e739789e504c41ad875eed93abbaBehdad Esfahbod return true; 64970de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod } 65070de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod 6515f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod USHORT len; 652d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod/*Type array[VAR];*/ 6535f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod}; 6545f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod 6556b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 6561e91434569a9e9535ef021ca52b60b2e2af75d19Behdad Esfahbod#endif /* HB_OPEN_TYPE_PRIVATE_HH */ 657