hb-open-type-private.hh revision 807b8aa486753474e05e09f4fcca8ac94021b97c
164aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod/* 2ee58aaebd296ea8237516754fd4e825d524b11b7Behdad Esfahbod * Copyright (C) 2007,2008,2009 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 53d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod#define CONST_ARRAY_AFTER(T,X) ((reinterpret_cast<const T *>(CONST_CHARP(&(X)) + sizeof (X)))) 54d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod#define ARRAY_AFTER(T,X) ((reinterpret_cast<T *>(CHARP(&(X)) + sizeof (X)))) 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. */ 64d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbodstatic const char NullPool[32] = ""; 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 878b8358033184198ff638ee1379093717596e162dBehdad Esfahbod#define ASSERT_SIZE_DATA(Type, size, data) \ 881f437e6f47fb6c15761021bd2078f31778f2179cBehdad Esfahbod ASSERT_SIZE (Type, size); \ 891f437e6f47fb6c15761021bd2078f31778f2179cBehdad Esfahbod DEFINE_NULL_DATA (Type, size, data) 901f437e6f47fb6c15761021bd2078f31778f2179cBehdad Esfahbod 91600e5eb80f553ea8eb862e6784133574c74ca513Behdad Esfahbod/* get_for_data() is a static class method returning a reference to an 92600e5eb80f553ea8eb862e6784133574c74ca513Behdad Esfahbod * instance of Type located at the input data location. It's just a 9354e5aac5e2947d4e2864c6f2987e4d275da73100Behdad Esfahbod * fancy, NULL-safe, cast! */ 94fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod#define STATIC_DEFINE_GET_FOR_DATA(Type) \ 9560d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod static inline const Type& get_for_data (const char *data) \ 9660d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod { \ 978b8358033184198ff638ee1379093717596e162dBehdad Esfahbod if (HB_UNLIKELY (data == NULL)) return Null(Type); \ 988b5346130425c7c101f6ff2432874ba2fd372edcBehdad Esfahbod return CONST_CAST (Type, *data, 0); \ 99212aba6189d7aaac0bab169b77ae6bdab16800a5Behdad Esfahbod } 100212aba6189d7aaac0bab169b77ae6bdab16800a5Behdad Esfahbod/* Like get_for_data(), but checks major version first. */ 101cd3827ee567612c5500206b62840702fc956e0f5Behdad Esfahbod#define STATIC_DEFINE_GET_FOR_DATA_CHECK_MAJOR_VERSION(Type, MajorMin, MajorMax) \ 102212aba6189d7aaac0bab169b77ae6bdab16800a5Behdad Esfahbod static inline const Type& get_for_data (const char *data) \ 103212aba6189d7aaac0bab169b77ae6bdab16800a5Behdad Esfahbod { \ 104212aba6189d7aaac0bab169b77ae6bdab16800a5Behdad Esfahbod if (HB_UNLIKELY (data == NULL)) return Null(Type); \ 1058b5346130425c7c101f6ff2432874ba2fd372edcBehdad Esfahbod const Type& t = CONST_CAST (Type, *data, 0); \ 106cd3827ee567612c5500206b62840702fc956e0f5Behdad Esfahbod if (HB_UNLIKELY (t.version.major < MajorMin || t.version.major > MajorMax)) return Null(Type); \ 107212aba6189d7aaac0bab169b77ae6bdab16800a5Behdad Esfahbod return t; \ 108212aba6189d7aaac0bab169b77ae6bdab16800a5Behdad Esfahbod } 109600e5eb80f553ea8eb862e6784133574c74ca513Behdad Esfahbod 110600e5eb80f553ea8eb862e6784133574c74ca513Behdad Esfahbod 111577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod/* 112577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod * Sanitize 113577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod */ 114577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 11595e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#ifndef HB_DEBUG_SANITIZE 11695e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#define HB_DEBUG_SANITIZE HB_DEBUG 11795e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#endif 11895e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod 11995e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 120d0351314cd29fbdf0efb5c7f89a569648f7a7fc7Behdad Esfahbod#include <stdio.h> 1213e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod#define TRACE_SANITIZE_ARG_DEF , unsigned int sanitize_depth 1223e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod#define TRACE_SANITIZE_ARG , sanitize_depth + 1 1233e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod#define TRACE_SANITIZE_ARG_INIT , 1 1243e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod#define TRACE_SANITIZE() \ 125b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod HB_STMT_START { \ 12695e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod if (sanitize_depth < HB_DEBUG_SANITIZE) \ 1277acb389569cf99c6bae9db31a8ed7c7007fbb566Behdad Esfahbod fprintf (stderr, "SANITIZE(%p) %-*d-> %s\n", \ 1287acb389569cf99c6bae9db31a8ed7c7007fbb566Behdad Esfahbod (CONST_CHARP (this) == NullPool) ? 0 : this, \ 1299b76a290a94f2603f3cb9498ae976125347cf54bBehdad Esfahbod sanitize_depth, sanitize_depth, \ 1307acb389569cf99c6bae9db31a8ed7c7007fbb566Behdad Esfahbod __PRETTY_FUNCTION__); \ 131b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod } HB_STMT_END 132b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod#else 1333e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod#define TRACE_SANITIZE_ARG_DEF 1343e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod#define TRACE_SANITIZE_ARG 1353e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod#define TRACE_SANITIZE_ARG_INIT 1363e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod#define TRACE_SANITIZE() HB_STMT_START {} HB_STMT_END 137b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod#endif 138b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod 13941895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod#define SANITIZE_ARG_DEF \ 1403e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod hb_sanitize_context_t *context TRACE_SANITIZE_ARG_DEF 14141895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod#define SANITIZE_ARG \ 1423e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod context TRACE_SANITIZE_ARG 14341895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod#define SANITIZE_ARG_INIT \ 1443e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod &context TRACE_SANITIZE_ARG_INIT 14541895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod 146577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbodtypedef struct _hb_sanitize_context_t hb_sanitize_context_t; 147577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbodstruct _hb_sanitize_context_t 148577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod{ 149577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod const char *start, *end; 150577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod int edit_count; 151577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod hb_blob_t *blob; 152577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod}; 153577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 154577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbodstatic HB_GNUC_UNUSED void 1554e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod_hb_sanitize_init (hb_sanitize_context_t *context, 1564e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod hb_blob_t *blob) 157577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod{ 158577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod context->blob = blob; 159577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod context->start = hb_blob_lock (blob); 160577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod context->end = context->start + hb_blob_get_length (blob); 161577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod context->edit_count = 0; 1624f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod 16395e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 1647acb389569cf99c6bae9db31a8ed7c7007fbb566Behdad Esfahbod fprintf (stderr, "sanitize %p init [%p..%p] (%u bytes)\n", 1657f96b39a9d5a81ba77e0c3dea8fe2cdb9957c4c7Behdad Esfahbod context->blob, context->start, context->end, context->end - context->start); 1664f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod#endif 167577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod} 168577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 169577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbodstatic HB_GNUC_UNUSED void 1704e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod_hb_sanitize_fini (hb_sanitize_context_t *context, 1714e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod bool unlock) 172577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod{ 17395e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 1747acb389569cf99c6bae9db31a8ed7c7007fbb566Behdad Esfahbod fprintf (stderr, "sanitize %p fini [%p..%p] %u edit requests\n", 1757acb389569cf99c6bae9db31a8ed7c7007fbb566Behdad Esfahbod context->blob, context->start, context->end, context->edit_count); 1764f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod#endif 1774f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod 178577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod if (unlock) 179577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod hb_blob_unlock (context->blob); 180577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod} 181577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 1824f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbodstatic HB_GNUC_UNUSED inline bool 18341895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod_hb_sanitize_check (SANITIZE_ARG_DEF, 18441895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod const char *base, 18541895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod unsigned int len) 18641895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod{ 187ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod bool ret = context->start <= base && 188ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod base <= context->end && 189ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod (unsigned int) (context->end - base) >= len; 190ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod 19195e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 19295e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod if (sanitize_depth < HB_DEBUG_SANITIZE) \ 193ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod fprintf (stderr, "SANITIZE(%p) %-*d-> check [%p..%p] (%d bytes) in [%p..%p] -> %s\n", \ 194ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod base, 195ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod sanitize_depth, sanitize_depth, 196ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod base, base+len, len, 197ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod context->start, context->end, 198ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod ret ? "pass" : "FAIL"); 199ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod#endif 200ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod return ret; 20141895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod} 20241895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod 20341895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbodstatic HB_GNUC_UNUSED inline bool 204815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod_hb_sanitize_array (SANITIZE_ARG_DEF, 205815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod const char *base, 206815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod unsigned int record_size, 207815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod unsigned int len) 208815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod{ 209815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod bool overflows = len >= ((unsigned int) -1) / record_size; 210815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod 21195e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 21295e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod if (sanitize_depth < HB_DEBUG_SANITIZE) \ 213815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod fprintf (stderr, "SANITIZE(%p) %-*d-> array [%p..%p] (%d*%d=%ld bytes) in [%p..%p] -> %s\n", \ 214815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod base, 215815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod sanitize_depth, sanitize_depth, 216815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod base, base + (record_size * len), record_size, len, (unsigned long) record_size * len, 217815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod context->start, context->end, 218815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod !overflows ? "does not overflow" : "OVERFLOWS FAIL"); 219815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod#endif 220815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod return HB_LIKELY (!overflows) && _hb_sanitize_check (SANITIZE_ARG, base, record_size * len); 221815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod} 222815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod 223815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbodstatic HB_GNUC_UNUSED inline bool 22441895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod_hb_sanitize_edit (SANITIZE_ARG_DEF, 2254f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod const char *base HB_GNUC_UNUSED, 2264f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod unsigned int len HB_GNUC_UNUSED) 227577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod{ 228977eeb714454630bd045bb11f58ff6397f10b143Behdad Esfahbod bool perm = hb_blob_try_writable_inplace (context->blob); 229f4b58d3fc2956a9d1b6178588d809c781f7a5c0cBehdad Esfahbod context->edit_count++; 2304f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod 23195e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 232ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod fprintf (stderr, "SANITIZE(%p) %-*d-> edit(%u) [%p..%p] (%d bytes) in [%p..%p] -> %s\n", \ 233ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod base, 234ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod sanitize_depth, sanitize_depth, 235ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod context->edit_count, 236ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod base, base+len, len, 237ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod context->start, context->end, 238ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod perm ? "granted" : "REJECTED"); 2394f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod#endif 2404f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod return perm; 241577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod} 242577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 243577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE(X) HB_LIKELY ((X).sanitize (SANITIZE_ARG)) 244577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE2(X,Y) (SANITIZE (X) && SANITIZE (Y)) 245577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 246577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE_THIS(X) HB_LIKELY ((X).sanitize (SANITIZE_ARG, CONST_CHARP(this))) 247577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE_THIS2(X,Y) (SANITIZE_THIS (X) && SANITIZE_THIS (Y)) 248577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE_THIS3(X,Y,Z) (SANITIZE_THIS (X) && SANITIZE_THIS (Y) && SANITIZE_THIS(Z)) 249577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 250577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE_BASE(X,B) HB_LIKELY ((X).sanitize (SANITIZE_ARG, B)) 251577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE_BASE2(X,Y,B) (SANITIZE_BASE (X,B) && SANITIZE_BASE (Y,B)) 252577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 253577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE_SELF() SANITIZE_OBJ (*this) 254577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE_OBJ(X) SANITIZE_MEM(&(X), sizeof (X)) 255577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod#define SANITIZE_GET_SIZE() SANITIZE_SELF() && SANITIZE_MEM (this, this->get_size ()) 256577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 257d0b657379bbe63602953412d6bc944b2a0f430ebBehdad Esfahbod/* TODO Optimize this if L is fixed (gcc magic) */ 25841895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod#define SANITIZE_MEM(B,L) HB_LIKELY (_hb_sanitize_check (SANITIZE_ARG, CONST_CHARP(B), (L))) 259577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 260815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod#define SANITIZE_ARRAY(A,S,L) HB_LIKELY (_hb_sanitize_array (SANITIZE_ARG, CONST_CHARP(A), S, L)) 261815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod 262d0b657379bbe63602953412d6bc944b2a0f430ebBehdad Esfahbod#define NEUTER(Var, Val) \ 263d0b657379bbe63602953412d6bc944b2a0f430ebBehdad Esfahbod (SANITIZE_OBJ (Var) && \ 26441895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod _hb_sanitize_edit (SANITIZE_ARG, CONST_CHARP(&(Var)), sizeof (Var)) && \ 265807b8aa486753474e05e09f4fcca8ac94021b97cBehdad Esfahbod ((Var).set (Val), true)) 266577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 267577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 2684e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod/* Template to sanitize an object. */ 2694e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbodtemplate <typename Type> 2704e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbodstruct Sanitizer 2714e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod{ 2724e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod static hb_blob_t *sanitize (hb_blob_t *blob) { 2734e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod hb_sanitize_context_t context; 2744e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod bool sane; 2754e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 276d0b657379bbe63602953412d6bc944b2a0f430ebBehdad Esfahbod /* TODO is_sane() stuff */ 2774e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 2784e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod retry: 27995e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 2807acb389569cf99c6bae9db31a8ed7c7007fbb566Behdad Esfahbod fprintf (stderr, "Sanitizer %p start %s\n", blob, __PRETTY_FUNCTION__); 2814f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod#endif 2824f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod 2834e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod _hb_sanitize_init (&context, blob); 2844e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 2858cd6fa28d1b77100491519b8dedb2e113508bf59Behdad Esfahbod Type *t = &CAST (Type, *DECONST_CHARP(context.start), 0); 2864e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 287b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod sane = t->sanitize (SANITIZE_ARG_INIT); 2884e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod if (sane) { 2894e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod if (context.edit_count) { 29095e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 2910d77ab8a73f57c9fca4c6f9301dae394d79526e3Behdad Esfahbod fprintf (stderr, "Sanitizer %p passed first round with %d edits; going a second round %s\n", 2920d77ab8a73f57c9fca4c6f9301dae394d79526e3Behdad Esfahbod blob, context.edit_count, __PRETTY_FUNCTION__); 2930d77ab8a73f57c9fca4c6f9301dae394d79526e3Behdad Esfahbod#endif 2948b5346130425c7c101f6ff2432874ba2fd372edcBehdad Esfahbod /* sanitize again to ensure no toe-stepping */ 2954e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod context.edit_count = 0; 296b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod sane = t->sanitize (SANITIZE_ARG_INIT); 2974e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod if (context.edit_count) { 29895e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 299ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod fprintf (stderr, "Sanitizer %p requested %d edits in second round; FAILLING %s\n", 3000d77ab8a73f57c9fca4c6f9301dae394d79526e3Behdad Esfahbod blob, context.edit_count, __PRETTY_FUNCTION__); 3010d77ab8a73f57c9fca4c6f9301dae394d79526e3Behdad Esfahbod#endif 3024e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod sane = false; 3034e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3044e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3054e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod _hb_sanitize_fini (&context, true); 3064e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } else { 3074f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod unsigned int edit_count = context.edit_count; 3084e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod _hb_sanitize_fini (&context, true); 309977eeb714454630bd045bb11f58ff6397f10b143Behdad Esfahbod if (edit_count && !hb_blob_is_writable (blob) && hb_blob_try_writable (blob)) { 310977eeb714454630bd045bb11f58ff6397f10b143Behdad Esfahbod /* ok, we made it writable by relocating. try again */ 31195e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 3127acb389569cf99c6bae9db31a8ed7c7007fbb566Behdad Esfahbod fprintf (stderr, "Sanitizer %p retry %s\n", blob, __PRETTY_FUNCTION__); 3134f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod#endif 3144e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod goto retry; 3154e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3164e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3174e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 31895e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#if HB_DEBUG_SANITIZE 319ae728e51e94d18d731b7c8dc524da1a4f427d63bBehdad Esfahbod fprintf (stderr, "Sanitizer %p %s %s\n", blob, sane ? "passed" : "FAILED", __PRETTY_FUNCTION__); 3204f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod#endif 3214e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod if (sane) 3224e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod return blob; 3234e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod else { 3244e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod hb_blob_destroy (blob); 3254e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod return hb_blob_create_empty (); 3264e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3274e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3284e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 329d60bb8ca2ae6edf29b2227b56c57f0d16879370bBehdad Esfahbod static const Type& lock_instance (hb_blob_t *blob) { 3304e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod return Type::get_for_data (hb_blob_lock (blob)); 3314e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3324e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod}; 3334e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 3342d15e72c75931398db5e027e660f1320bb979117Behdad Esfahbod 335b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod/* 336b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod * 337bff3c0fde5da04a70d1f7aeeb9fa2a75fe5c07f6Behdad Esfahbod * The OpenType Font File: Data Types 338b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod */ 339b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod 340b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod 341b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod/* "The following data types are used in the OpenType font file. 342b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod * All OpenType fonts use Motorola-style byte ordering (Big Endian):" */ 343b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod 3445f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod/* 3455f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod * Int types 3465f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod */ 3475f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod 3489e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod/* TODO On machines that allow unaligned access, use this version. */ 3499e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod#define _DEFINE_INT_TYPE1_UNALIGNED(NAME, TYPE, BIG_ENDIAN, BYTES) \ 35060d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod struct NAME \ 35160d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod { \ 352807b8aa486753474e05e09f4fcca8ac94021b97cBehdad Esfahbod inline NAME& set (TYPE i) { (TYPE&) v = BIG_ENDIAN (i); return *this; } \ 35320cc86b3592db33731de671f008d7d222776be49Behdad Esfahbod inline operator TYPE(void) const { return BIG_ENDIAN ((TYPE&) v); } \ 35420cc86b3592db33731de671f008d7d222776be49Behdad Esfahbod inline bool operator== (NAME o) const { return (TYPE&) v == (TYPE&) o.v; } \ 355b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { \ 3563e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); \ 357b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod return SANITIZE_SELF (); \ 358b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod } \ 3599e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod private: unsigned char v[BYTES]; \ 3609e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod }; \ 3619e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod ASSERT_SIZE (NAME, BYTES) 3629e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod 3639e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod#define DEFINE_INT_TYPE1(NAME, TYPE, BIG_ENDIAN, BYTES) \ 3649e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod struct NAME \ 3659e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod { \ 366807b8aa486753474e05e09f4fcca8ac94021b97cBehdad Esfahbod inline NAME& set (TYPE i) { BIG_ENDIAN##_put_unaligned(v, i); return *this; } \ 3679e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod inline operator TYPE(void) const { return BIG_ENDIAN##_get_unaligned (v); } \ 3689e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod inline bool operator== (NAME o) const { return BIG_ENDIAN##_cmp_unaligned (v, o.v); } \ 3699e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { \ 3703e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); \ 3719e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod return SANITIZE_SELF (); \ 3729e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod } \ 3739e826ea2832f0444bcef9075b445d481a58a09c2Behdad Esfahbod private: unsigned char v[BYTES]; \ 3745f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod }; \ 37520cc86b3592db33731de671f008d7d222776be49Behdad Esfahbod ASSERT_SIZE (NAME, BYTES) 376df66028781a7609a515980e64396e6f1044d764aBehdad Esfahbod#define DEFINE_INT_TYPE0(NAME, type, b) DEFINE_INT_TYPE1 (NAME, type##_t, hb_be_##type, b) 377df66028781a7609a515980e64396e6f1044d764aBehdad Esfahbod#define DEFINE_INT_TYPE(NAME, u, w) DEFINE_INT_TYPE0 (NAME, u##int##w, (w / 8)) 3785f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod 379b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod 38020cc86b3592db33731de671f008d7d222776be49Behdad EsfahbodDEFINE_INT_TYPE (USHORT, u, 16); /* 16-bit unsigned integer. */ 38120cc86b3592db33731de671f008d7d222776be49Behdad EsfahbodDEFINE_INT_TYPE (SHORT, , 16); /* 16-bit signed integer. */ 38220cc86b3592db33731de671f008d7d222776be49Behdad EsfahbodDEFINE_INT_TYPE (ULONG, u, 32); /* 32-bit unsigned integer. */ 38320cc86b3592db33731de671f008d7d222776be49Behdad EsfahbodDEFINE_INT_TYPE (LONG, , 32); /* 32-bit signed integer. */ 3846b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 385bff3c0fde5da04a70d1f7aeeb9fa2a75fe5c07f6Behdad Esfahbod 3866b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod/* Array of four uint8s (length = 32 bits) used to identify a script, language 3876b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod * system, feature, or baseline */ 38820cc86b3592db33731de671f008d7d222776be49Behdad Esfahbodstruct Tag : ULONG 38960d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod{ 3904497af0069a94c69fc1518b1db2c1282721b732aBehdad Esfahbod inline Tag (const Tag &o) { *(ULONG*)this = (ULONG&) o; } 391807b8aa486753474e05e09f4fcca8ac94021b97cBehdad Esfahbod inline Tag (uint32_t i) { (*(ULONG*)this).set (i); } 3924497af0069a94c69fc1518b1db2c1282721b732aBehdad Esfahbod inline Tag (const char *c) { *(ULONG*)this = *(ULONG*)c; } 3934497af0069a94c69fc1518b1db2c1282721b732aBehdad Esfahbod inline bool operator== (const char *c) const { return *(ULONG*)this == *(ULONG*)c; } 394befc022affd2386b3f46cd7d11e4262f6c8bce9fBehdad Esfahbod /* What the char* converters return is NOT nul-terminated. Print using "%.4s" */ 3952b5a59c277f4c5bf7aac9a9005054763e322e02dBehdad Esfahbod inline operator const char* (void) const { return CONST_CHARP(this); } 3962b5a59c277f4c5bf7aac9a9005054763e322e02dBehdad Esfahbod inline operator char* (void) { return CHARP(this); } 397738c54d9caa3affc4b434e56bfb810ff6dc9b0b3Behdad Esfahbod 398738c54d9caa3affc4b434e56bfb810ff6dc9b0b3Behdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { 3993e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 400738c54d9caa3affc4b434e56bfb810ff6dc9b0b3Behdad Esfahbod /* Note: Only accept ASCII-visible tags (mind DEL) 401738c54d9caa3affc4b434e56bfb810ff6dc9b0b3Behdad Esfahbod * This is one of the few times (only time?) we check 402738c54d9caa3affc4b434e56bfb810ff6dc9b0b3Behdad Esfahbod * for data integrity, as opposed o just boundary checks 403738c54d9caa3affc4b434e56bfb810ff6dc9b0b3Behdad Esfahbod */ 404738c54d9caa3affc4b434e56bfb810ff6dc9b0b3Behdad Esfahbod return SANITIZE_SELF () && (((uint32_t) *this) & 0x80808080) == 0; 405738c54d9caa3affc4b434e56bfb810ff6dc9b0b3Behdad Esfahbod } 4066b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod}; 407303fe62824d4e99df554b6bfaacba05d068522fbBehdad EsfahbodASSERT_SIZE (Tag, 4); 408da1097bc3b1995776c205707fd2b17603b804646Behdad Esfahbod#define _NULL_TAG_INIT {' ', ' ', ' ', ' '} 409da1097bc3b1995776c205707fd2b17603b804646Behdad EsfahbodDEFINE_NULL_DATA (Tag, 4, _NULL_TAG_INIT); 410da1097bc3b1995776c205707fd2b17603b804646Behdad Esfahbod#undef _NULL_TAG_INIT 4116b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 4126b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod/* Glyph index number, same as uint16 (length = 16 bits) */ 4136ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbodtypedef USHORT GlyphID; 4146b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 4151f437e6f47fb6c15761021bd2078f31778f2179cBehdad Esfahbod/* Offset to a table, same as uint16 (length = 16 bits), Null offset = 0x0000 */ 4166ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbodtypedef USHORT Offset; 4176ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbod 4186ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbod/* LongOffset to a table, same as uint32 (length = 32 bits), Null offset = 0x00000000 */ 4196ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbodtypedef ULONG LongOffset; 4206ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbod 4216b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 4226b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod/* CheckSum */ 42360d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbodstruct CheckSum : ULONG 42460d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod{ 42560d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod static uint32_t CalcTableChecksum (ULONG *Table, uint32_t Length) 42660d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod { 4276b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod uint32_t Sum = 0L; 42801e4fcb032be601f272e62228881e2aabfb9d925Behdad Esfahbod ULONG *EndPtr = Table+((Length+3) & ~3) / sizeof(ULONG); 4296b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 4306b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod while (Table < EndPtr) 4316b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod Sum += *Table++; 4326b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod return Sum; 4336b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod } 4346b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod}; 4358b8358033184198ff638ee1379093717596e162dBehdad EsfahbodASSERT_SIZE (CheckSum, 4); 4366b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 4376b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 4386b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod/* 4396b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod * Version Numbers 4406b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod */ 4416b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 44287fcdcbe3644da10154688765db2d62eb9ac079aBehdad Esfahbodstruct FixedVersion 44360d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod{ 44409c292e3b688a67fbae67b645d1e6ffcf8d8eb6eBehdad Esfahbod inline operator uint32_t (void) const { return (major << 16) + minor; } 44596908b898476ca5d7da5f386b15be76f9e83d76eBehdad Esfahbod 446cd3827ee567612c5500206b62840702fc956e0f5Behdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { 4473e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 448cd3827ee567612c5500206b62840702fc956e0f5Behdad Esfahbod return SANITIZE_SELF (); 449cd3827ee567612c5500206b62840702fc956e0f5Behdad Esfahbod } 450cd3827ee567612c5500206b62840702fc956e0f5Behdad Esfahbod 4516ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbod USHORT major; 45287fcdcbe3644da10154688765db2d62eb9ac079aBehdad Esfahbod USHORT minor; 4536b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod}; 45487fcdcbe3644da10154688765db2d62eb9ac079aBehdad EsfahbodASSERT_SIZE (FixedVersion, 4); 4556b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 45692b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 45792b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 4585f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod/* 45992b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod * Template subclasses of Offset and LongOffset that do the dereferencing. 46092b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod * Use: (this+memberName) 4615f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod */ 4625f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod 46392b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename OffsetType, typename Type> 46492b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct GenericOffsetTo : OffsetType 46592b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod{ 46692b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod inline const Type& operator() (const void *base) const 46792b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod { 46892b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod unsigned int offset = *this; 46992b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod if (HB_UNLIKELY (!offset)) return Null(Type); 47095639fccc1ef18eadeb737e8b611d1d1f1315fc2Behdad Esfahbod return CONST_CAST(Type, *CONST_CHARP(base), offset); 47192b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod } 47292b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 47320b035dad41247076815a2bbb0346d63058b322fBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, const void *base) { 4743e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 47595528131b5ab9fc9e265ace715832135ebd457a4Behdad Esfahbod if (!SANITIZE_SELF ()) return false; 47692b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod unsigned int offset = *this; 47792b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod if (HB_UNLIKELY (!offset)) return true; 478ac26e2a838d1266bb5f39c43245eb2a52c5e072dBehdad Esfahbod return SANITIZE (CAST(Type, *DECONST_CHARP(base), offset)) || NEUTER (DECONST_CAST(OffsetType,*this,0), 0); 47992b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod } 48020b035dad41247076815a2bbb0346d63058b322fBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, const void *base, const void *base2) { 4813e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 48295528131b5ab9fc9e265ace715832135ebd457a4Behdad Esfahbod if (!SANITIZE_SELF ()) return false; 483b508e5ccd528f3f0f49f545bd5f30a525d5abd5aBehdad Esfahbod unsigned int offset = *this; 484b508e5ccd528f3f0f49f545bd5f30a525d5abd5aBehdad Esfahbod if (HB_UNLIKELY (!offset)) return true; 485b508e5ccd528f3f0f49f545bd5f30a525d5abd5aBehdad Esfahbod return SANITIZE_BASE (CAST(Type, *DECONST_CHARP(base), offset), base2) || NEUTER (DECONST_CAST(OffsetType,*this,0), 0); 486b508e5ccd528f3f0f49f545bd5f30a525d5abd5aBehdad Esfahbod } 48720b035dad41247076815a2bbb0346d63058b322fBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, const void *base, unsigned int user_data) { 4883e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 48995528131b5ab9fc9e265ace715832135ebd457a4Behdad Esfahbod if (!SANITIZE_SELF ()) return false; 49042b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod unsigned int offset = *this; 49142b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod if (HB_UNLIKELY (!offset)) return true; 492ac26e2a838d1266bb5f39c43245eb2a52c5e072dBehdad Esfahbod return SANITIZE_BASE (CAST(Type, *DECONST_CHARP(base), offset), user_data) || NEUTER (DECONST_CAST(OffsetType,*this,0), 0); 49342b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod } 49492b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod}; 49592b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename Base, typename OffsetType, typename Type> 49692b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodinline const Type& operator + (const Base &base, GenericOffsetTo<OffsetType, Type> offset) { return offset (base); } 49792b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 4985f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbodtemplate <typename Type> 49992b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct OffsetTo : GenericOffsetTo<Offset, Type> {}; 50092b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 50192b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename Type> 50292b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct LongOffsetTo : GenericOffsetTo<LongOffset, Type> {}; 503bff3c0fde5da04a70d1f7aeeb9fa2a75fe5c07f6Behdad Esfahbod 504bff3c0fde5da04a70d1f7aeeb9fa2a75fe5c07f6Behdad Esfahbod 50592b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod/* 50692b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod * Array Types 50792b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod */ 50892b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 50992b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename LenType, typename Type> 51092b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct GenericArrayOf 51160d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod{ 512d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod const Type *const_array(void) const { return CONST_ARRAY_AFTER (Type, len); } 513d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod Type *array(void) { return ARRAY_AFTER (Type, len); } 514d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod 51548de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod const Type *const_sub_array (unsigned int start_offset, unsigned int *pcount /* IN/OUT */) const 51648de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod { 51748de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod unsigned int count = len; 51848de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod if (HB_UNLIKELY (start_offset > count)) 51948de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod count = 0; 52048de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod else 52148de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod count -= start_offset; 52248de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod count = MIN (count, *pcount); 52348de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod *pcount = count; 52448de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod return const_array() + start_offset; 52548de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod } 52648de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod 52760d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod inline const Type& operator [] (unsigned int i) const 52860d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod { 5295f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod if (HB_UNLIKELY (i >= len)) return Null(Type); 530d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod return const_array()[i]; 5315f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod } 53260d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod inline unsigned int get_size () const 533d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod { return sizeof (len) + len * sizeof (Type); } 534e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbod 53520b035dad41247076815a2bbb0346d63058b322fBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { 5363e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 537dc9c4d93cd0f3ac991f32df08c1c17fc389054c0Behdad Esfahbod if (!SANITIZE_GET_SIZE()) return false; 5383564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod /* Note: 5393564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod * for non-recursive types, this is not much needed. 5403564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod * But we keep the code to make sure the objects pointed to 5413564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod * do have a simple sanitize(). */ 5423564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod return true; 54370de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod unsigned int count = len; 54470de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 545d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod if (!SANITIZE (array()[i])) 54670de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod return false; 5479bd629ccd064e739789e504c41ad875eed93abbaBehdad Esfahbod return true; 54870de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod } 54920b035dad41247076815a2bbb0346d63058b322fBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, const void *base) { 5503e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 551dc9c4d93cd0f3ac991f32df08c1c17fc389054c0Behdad Esfahbod if (!SANITIZE_GET_SIZE()) return false; 552e6ab2c59ba2d37942ac5fcbfe61d38b7e359ac8cBehdad Esfahbod unsigned int count = len; 553e6ab2c59ba2d37942ac5fcbfe61d38b7e359ac8cBehdad Esfahbod for (unsigned int i = 0; i < count; i++) 554d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod if (!array()[i].sanitize (SANITIZE_ARG, base)) 555e6ab2c59ba2d37942ac5fcbfe61d38b7e359ac8cBehdad Esfahbod return false; 5569bd629ccd064e739789e504c41ad875eed93abbaBehdad Esfahbod return true; 557e6ab2c59ba2d37942ac5fcbfe61d38b7e359ac8cBehdad Esfahbod } 55820b035dad41247076815a2bbb0346d63058b322fBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, const void *base, const void *base2) { 5593e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 560b508e5ccd528f3f0f49f545bd5f30a525d5abd5aBehdad Esfahbod if (!SANITIZE_GET_SIZE()) return false; 561b508e5ccd528f3f0f49f545bd5f30a525d5abd5aBehdad Esfahbod unsigned int count = len; 562b508e5ccd528f3f0f49f545bd5f30a525d5abd5aBehdad Esfahbod for (unsigned int i = 0; i < count; i++) 563d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod if (!array()[i].sanitize (SANITIZE_ARG, base, base2)) 564b508e5ccd528f3f0f49f545bd5f30a525d5abd5aBehdad Esfahbod return false; 5659bd629ccd064e739789e504c41ad875eed93abbaBehdad Esfahbod return true; 566b508e5ccd528f3f0f49f545bd5f30a525d5abd5aBehdad Esfahbod } 56720b035dad41247076815a2bbb0346d63058b322fBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, const void *base, unsigned int user_data) { 5683e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 56942b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod if (!SANITIZE_GET_SIZE()) return false; 57042b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod unsigned int count = len; 57142b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 572d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod if (!array()[i].sanitize (SANITIZE_ARG, base, user_data)) 57342b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod return false; 5749bd629ccd064e739789e504c41ad875eed93abbaBehdad Esfahbod return true; 57542b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod } 57670de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod 57792b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod LenType len; 578d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod/*Type array[VAR];*/ 579e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbod}; 580e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbod 58192b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod/* An array with a USHORT number of elements. */ 58292b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename Type> 58392b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct ArrayOf : GenericArrayOf<USHORT, Type> {}; 58492b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 58592b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod/* An array with a ULONG number of elements. */ 58692b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename Type> 58792b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct LongArrayOf : GenericArrayOf<ULONG, Type> {}; 58892b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 58992b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod/* Array of Offset's */ 59092b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename Type> 59192b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct OffsetArrayOf : ArrayOf<OffsetTo<Type> > {}; 59292b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 59392b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod/* Array of LongOffset's */ 59492b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename Type> 59592b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct LongOffsetArrayOf : ArrayOf<LongOffsetTo<Type> > {}; 59692b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 59792b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod/* LongArray of LongOffset's */ 59892b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename Type> 59992b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct LongOffsetLongArrayOf : LongArrayOf<LongOffsetTo<Type> > {}; 60092b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 60180e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod/* Array of offsets relative to the beginning of the array itself. */ 60280e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbodtemplate <typename Type> 60380e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbodstruct OffsetListOf : OffsetArrayOf<Type> 60480e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod{ 60580e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod inline const Type& operator [] (unsigned int i) const 60680e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod { 60780e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod if (HB_UNLIKELY (i >= this->len)) return Null(Type); 608d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod return this+this->const_array()[i]; 60980e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod } 61080e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod 61180e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { 6123e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 61380e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod return OffsetArrayOf<Type>::sanitize (SANITIZE_ARG, CONST_CHARP(this)); 61480e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod } 61580e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, unsigned int user_data) { 6163e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 61780e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod return OffsetArrayOf<Type>::sanitize (SANITIZE_ARG, CONST_CHARP(this), user_data); 61880e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod } 61980e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod}; 62080e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod 62180e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod 622e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbod/* An array with a USHORT number of elements, 623e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbod * starting at second element. */ 624e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbodtemplate <typename Type> 62560d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbodstruct HeadlessArrayOf 62660d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod{ 627d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod const Type *const_array(void) const { return CONST_ARRAY_AFTER (Type, len); } 628d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod Type *array(void) { return ARRAY_AFTER (Type, len); } 629d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod 63060d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod inline const Type& operator [] (unsigned int i) const 63160d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod { 632e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbod if (HB_UNLIKELY (i >= len || !i)) return Null(Type); 633d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod return const_array()[i-1]; 634e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbod } 63560d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod inline unsigned int get_size () const 636d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod { return sizeof (len) + (len ? len - 1 : 0) * sizeof (Type); } 6375f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod 63820b035dad41247076815a2bbb0346d63058b322fBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { 6393e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 640dc9c4d93cd0f3ac991f32df08c1c17fc389054c0Behdad Esfahbod if (!SANITIZE_GET_SIZE()) return false; 6413564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod /* Note: 6423564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod * for non-recursive types, this is not much needed. 6433564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod * But we keep the code to make sure the objects pointed to 6443564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod * do have a simple sanitize(). */ 6453564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod return true; 64615164d9258a74122a4db748d35532bd72c47cec2Behdad Esfahbod unsigned int count = len ? len - 1 : 0; 647d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod Type *a = array(); 64870de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 649d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod if (!SANITIZE (a[i])) 65070de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod return false; 6519bd629ccd064e739789e504c41ad875eed93abbaBehdad Esfahbod return true; 65270de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod } 65370de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod 6545f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod USHORT len; 655d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod/*Type array[VAR];*/ 6565f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod}; 6575f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod 6586b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 6591e91434569a9e9535ef021ca52b60b2e2af75d19Behdad Esfahbod#endif /* HB_OPEN_TYPE_PRIVATE_HH */ 660