hb-open-type-private.hh revision dfc8cbe85479dde1ffdc6b2e73f4907331d77a19
164aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod/* 2f9b37727985191c9b4aedb0e9835736027e59260Behdad Esfahbod * Copyright (C) 2007,2008,2009,2010 Red Hat, Inc. 364aef3a54999496fd1de4f5aa5b019e4c03b3836Behdad Esfahbod * 4c755cb3e3ac55156d0d2ec05adea7a650b97cc41Behdad Esfahbod * This is part of HarfBuzz, a text shaping 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 35c85c3620675f38ffdca59134aeec2641485f40caBehdad Esfahbod/* Table/script/language-system/feature/... not found */ 36706ab25a4cb043d46e6088aa0a7184ee200276c9Behdad Esfahbod#define NO_INDEX ((unsigned int) 0xFFFF) 375a0b791184cf6ef39eae0570e14aca21abc32845Behdad Esfahbod 38706ab25a4cb043d46e6088aa0a7184ee200276c9Behdad Esfahbod 39a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbod 40196598bbccff08415ff5192314cba044df258cadBehdad Esfahbod/* 41196598bbccff08415ff5192314cba044df258cadBehdad Esfahbod * Casts 42196598bbccff08415ff5192314cba044df258cadBehdad Esfahbod */ 43196598bbccff08415ff5192314cba044df258cadBehdad Esfahbod 440dfcc13a4668cdd2c2ebdd5f4a7540a51222cf2fBehdad Esfahbod/* Cast to "const char *" and "char *" */ 45a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbodtemplate <typename Type> 46a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbodinline const char * CharP (const Type* X) 47a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbod{ return reinterpret_cast<const char *>(X); } 48a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbodtemplate <typename Type> 49a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbodinline char * CharP (Type* X) 50a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbod{ return reinterpret_cast<char *>(X); } 512b5a59c277f4c5bf7aac9a9005054763e322e02dBehdad Esfahbod 52187454c595559ce48d072fee6bccb51f3de283d4Behdad Esfahbod/* Cast to struct T, reference to reference */ 53a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbodtemplate<typename Type, typename TObject> 54187454c595559ce48d072fee6bccb51f3de283d4Behdad Esfahbodinline const Type& CastR(const TObject &X) 55a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbod{ return reinterpret_cast<const Type&> (X); } 56a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbodtemplate<typename Type, typename TObject> 57187454c595559ce48d072fee6bccb51f3de283d4Behdad Esfahbodinline Type& CastR(TObject &X) 58a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbod{ return reinterpret_cast<Type&> (X); } 59196598bbccff08415ff5192314cba044df258cadBehdad Esfahbod 60187454c595559ce48d072fee6bccb51f3de283d4Behdad Esfahbod/* Cast to struct T, pointer to pointer */ 61187454c595559ce48d072fee6bccb51f3de283d4Behdad Esfahbodtemplate<typename Type, typename TObject> 62187454c595559ce48d072fee6bccb51f3de283d4Behdad Esfahbodinline const Type* CastP(const TObject *X) 63187454c595559ce48d072fee6bccb51f3de283d4Behdad Esfahbod{ return reinterpret_cast<const Type*> (X); } 64187454c595559ce48d072fee6bccb51f3de283d4Behdad Esfahbodtemplate<typename Type, typename TObject> 65187454c595559ce48d072fee6bccb51f3de283d4Behdad Esfahbodinline Type* CastP(TObject *X) 66187454c595559ce48d072fee6bccb51f3de283d4Behdad Esfahbod{ return reinterpret_cast<Type*> (X); } 67187454c595559ce48d072fee6bccb51f3de283d4Behdad Esfahbod 68a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbod/* StructAtOffset<T>(X,Ofs) returns the struct T& that is placed at memory 69a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbod * location of X plus Ofs bytes. */ 70a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbodtemplate<typename Type, typename TObject> 71a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbodinline const Type& StructAtOffset(const TObject &X, unsigned int offset) 72d632ec4000b3079150e6424e88a3ab7509f7445cBehdad Esfahbod{ return * reinterpret_cast<const Type*> (CharP(&X) + offset); } 73a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbodtemplate<typename Type, typename TObject> 74a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbodinline Type& StructAtOffset(TObject &X, unsigned int offset) 75d632ec4000b3079150e6424e88a3ab7509f7445cBehdad Esfahbod{ return * reinterpret_cast<Type*> (CharP(&X) + offset); } 7670de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod 772e2f43edf2f49f4047e28b1ce2ea95938536de9cBehdad Esfahbod/* StructAfter<T>(X) returns the struct T& that is placed after X. 7829c3f5e1b6212c775a7b911becd44ba093b7b0ebBehdad Esfahbod * Works with X of variable size also. X must implement get_size() */ 79e961c86c579fd98ee604342a9c70c4e7f8d4f220Behdad Esfahbodtemplate<typename Type, typename TObject> 80e961c86c579fd98ee604342a9c70c4e7f8d4f220Behdad Esfahbodinline const Type& StructAfter(const TObject &X) 81a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbod{ return StructAtOffset<Type>(X, X.get_size()); } 82e961c86c579fd98ee604342a9c70c4e7f8d4f220Behdad Esfahbodtemplate<typename Type, typename TObject> 83e961c86c579fd98ee604342a9c70c4e7f8d4f220Behdad Esfahbodinline Type& StructAfter(TObject &X) 84a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbod{ return StructAtOffset<Type>(X, X.get_size()); } 85a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbod 86e961c86c579fd98ee604342a9c70c4e7f8d4f220Behdad Esfahbod 87d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod 8870de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod/* 89f0abcd69408a3af65207cdf8847575ade4579bd4Behdad Esfahbod * Null objects 90600e5eb80f553ea8eb862e6784133574c74ca513Behdad Esfahbod */ 91600e5eb80f553ea8eb862e6784133574c74ca513Behdad Esfahbod 928b8358033184198ff638ee1379093717596e162dBehdad Esfahbod/* Global nul-content Null pool. Enlarge as necessary. */ 939d3677899f90abdc7fb3e3d854db654a8707a84bBehdad Esfahbodstatic const void *_NullPool[32 / sizeof (void *)]; 948b8358033184198ff638ee1379093717596e162dBehdad Esfahbod 958b8358033184198ff638ee1379093717596e162dBehdad Esfahbod/* Generic template for nul-content sizeof-sized Null objects. */ 968b8358033184198ff638ee1379093717596e162dBehdad Esfahbodtemplate <typename Type> 979d3677899f90abdc7fb3e3d854db654a8707a84bBehdad Esfahbodstatic inline const Type& Null () { 989d3677899f90abdc7fb3e3d854db654a8707a84bBehdad Esfahbod ASSERT_STATIC (sizeof (Type) <= sizeof (_NullPool)); 99187454c595559ce48d072fee6bccb51f3de283d4Behdad Esfahbod return *CastP<Type> (_NullPool); 1009d3677899f90abdc7fb3e3d854db654a8707a84bBehdad Esfahbod} 1018b8358033184198ff638ee1379093717596e162dBehdad Esfahbod 1028b8358033184198ff638ee1379093717596e162dBehdad Esfahbod/* Specializaiton for arbitrary-content arbitrary-sized Null objects. */ 1038b8358033184198ff638ee1379093717596e162dBehdad Esfahbod#define DEFINE_NULL_DATA(Type, size, data) \ 104565c80bd2960366ace2d10dd71beaaf2a80213c8Behdad Esfahbodstatic const char _Null##Type[size + 1] = data; /* +1 is for nul-termination in data */ \ 1058b8358033184198ff638ee1379093717596e162dBehdad Esfahbodtemplate <> \ 1069d3677899f90abdc7fb3e3d854db654a8707a84bBehdad Esfahbodinline const Type& Null<Type> () { \ 107187454c595559ce48d072fee6bccb51f3de283d4Behdad Esfahbod return *CastP<Type> (_Null##Type); \ 108565c80bd2960366ace2d10dd71beaaf2a80213c8Behdad Esfahbod} /* The following line really exists such that we end in a place needing semicolon */ \ 109565c80bd2960366ace2d10dd71beaaf2a80213c8Behdad EsfahbodASSERT_STATIC (sizeof (Type) + 1 <= sizeof (_Null##Type)) 1108b8358033184198ff638ee1379093717596e162dBehdad Esfahbod 1118b8358033184198ff638ee1379093717596e162dBehdad Esfahbod/* Accessor macro. */ 1129d3677899f90abdc7fb3e3d854db654a8707a84bBehdad Esfahbod#define Null(Type) Null<Type>() 1138b8358033184198ff638ee1379093717596e162dBehdad Esfahbod 1148b8358033184198ff638ee1379093717596e162dBehdad Esfahbod 11520e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod/* 116dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbod * Trace 11720e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod */ 11820e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod 119dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbod 120dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbodtemplate <int max_depth> 121dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbodstruct hb_trace_t { 122dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbod explicit hb_trace_t (unsigned int *pdepth) : pdepth(pdepth) { if (max_depth) ++*pdepth; } 123dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbod ~hb_trace_t (void) { if (max_depth) --*pdepth; } 124dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbod 125dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbod inline void log (const char *what, const char *function, const void *obj) 126dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbod { 127dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbod if (*pdepth < max_depth) 128dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbod fprintf (stderr, "%s(%p) %-*d-> %s\n", what, obj, *pdepth, *pdepth, function); 129dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbod } 13020e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod 13120e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod private: 132dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbod unsigned int *pdepth; 13320e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod}; 134dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbodtemplate <> /* Optimize when tracing is disabled */ 135dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbodstruct hb_trace_t<0> { 136dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbod explicit hb_trace_t (unsigned int *p) {} 137dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbod inline void log (const char *what, const char *function, const void *obj) {}; 13820e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod}; 13920e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod 14020e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod 141600e5eb80f553ea8eb862e6784133574c74ca513Behdad Esfahbod 142577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod/* 143577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod * Sanitize 144577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod */ 145577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 14695e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#ifndef HB_DEBUG_SANITIZE 147807c5b03a2251a3c29a520852639421783101b55Behdad Esfahbod#define HB_DEBUG_SANITIZE HB_DEBUG+0 14895e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod#endif 14995e202403ffa543c817f45cca21fbc116eb8e807Behdad Esfahbod 15020e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod 151bc200457430c083914a64bf4b056153506749610Behdad Esfahbod#define TRACE_SANITIZE() \ 152dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbod hb_trace_t<HB_DEBUG_SANITIZE> trace (&context->debug_depth); \ 153dfc8cbe85479dde1ffdc6b2e73f4907331d77a19Behdad Esfahbod trace.log ("SANITIZE", HB_FUNC, this); 154807c5b03a2251a3c29a520852639421783101b55Behdad Esfahbod 155b28815c1f6e46d38471cacbc31248ca6fda8c4d1Behdad Esfahbod 15641895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod#define SANITIZE_ARG_DEF \ 15720e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod hb_sanitize_context_t *context 15841895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod#define SANITIZE_ARG \ 15920e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod context 160173fde7087c0db3e99409f1119530477c14072f5Behdad Esfahbod 1611376fb7bf9ef07970f0ba13dc64d6a8ab8252762Behdad Esfahbodstruct hb_sanitize_context_t 162577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod{ 16398daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod inline void init (hb_blob_t *blob) 16498daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod { 16598daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod this->blob = hb_blob_reference (blob); 16698daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod this->start = hb_blob_lock (blob); 16798daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod this->end = this->start + hb_blob_get_length (blob); 16898daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod this->writable = hb_blob_is_writable (blob); 16998daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod this->edit_count = 0; 17020e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod this->debug_depth = 0; 171577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 17298daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod if (HB_DEBUG_SANITIZE) 17398daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod fprintf (stderr, "sanitize %p init [%p..%p] (%u bytes)\n", 17498daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod this->blob, this->start, this->end, this->end - this->start); 17598daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod } 1761376fb7bf9ef07970f0ba13dc64d6a8ab8252762Behdad Esfahbod 17798daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod inline void finish (void) 17898daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod { 17998daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod if (HB_DEBUG_SANITIZE) 18098daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod fprintf (stderr, "sanitize %p fini [%p..%p] %u edit requests\n", 18198daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod this->blob, this->start, this->end, this->edit_count); 182577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 18398daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod hb_blob_unlock (this->blob); 18498daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod hb_blob_destroy (this->blob); 18598daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod this->blob = NULL; 18698daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod this->start = this->end = NULL; 18798daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod } 1884f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod 18920e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod inline bool check (const char *base, unsigned int len) const 19098daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod { 19198daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod bool ret = this->start <= base && 19298daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod base <= this->end && 19398daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod (unsigned int) (this->end - base) >= len; 19498daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod 19520e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod if (HB_DEBUG_SANITIZE && (int) this->debug_depth < (int) HB_DEBUG_SANITIZE) \ 19698daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod fprintf (stderr, "SANITIZE(%p) %-*d-> check [%p..%p] (%d bytes) in [%p..%p] -> %s\n", \ 19798daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod base, 19820e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod this->debug_depth, this->debug_depth, 19998daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod base, base+len, len, 20098daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod this->start, this->end, 20198daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod ret ? "pass" : "FAIL"); 20298daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod 20398daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod return ret; 20498daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod } 205577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 20620e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod inline bool check_array (const char *base, unsigned int record_size, unsigned int len) const 20798daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod { 20898daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod bool overflows = len >= ((unsigned int) -1) / record_size; 20941895506cb6a41b1a833866f8822261ea449ea0bBehdad Esfahbod 210815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod 21120e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod if (HB_DEBUG_SANITIZE && (int) this->debug_depth < (int) HB_DEBUG_SANITIZE) 21298daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod fprintf (stderr, "SANITIZE(%p) %-*d-> array [%p..%p] (%d*%d=%ld bytes) in [%p..%p] -> %s\n", \ 21398daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod base, 21420e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod this->debug_depth, this->debug_depth, 21598daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod base, base + (record_size * len), record_size, len, (unsigned long) record_size * len, 21698daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod this->start, this->end, 21798daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod !overflows ? "does not overflow" : "OVERFLOWS FAIL"); 218fa030175ca998b00cc42cbced6e98de323ec01ecBehdad Esfahbod 21920e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod return likely (!overflows) && this->check (base, record_size * len); 22098daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod } 221254933c397f1ce9796f59689a25f9fc2e58df4eaBehdad Esfahbod 22220e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod inline bool can_edit (const char *base HB_UNUSED, unsigned int len HB_UNUSED) 22398daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod { 22498daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod this->edit_count++; 22598daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod 22620e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod if (HB_DEBUG_SANITIZE && (int) this->debug_depth < (int) HB_DEBUG_SANITIZE) 22798daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod fprintf (stderr, "SANITIZE(%p) %-*d-> edit(%u) [%p..%p] (%d bytes) in [%p..%p] -> %s\n", \ 22898daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod base, 22920e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod this->debug_depth, this->debug_depth, 23098daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod this->edit_count, 23198daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod base, base+len, len, 23298daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod this->start, this->end, 23398daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod this->writable ? "granted" : "REJECTED"); 23498daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod 23598daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod return this->writable; 23698daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod } 23798daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod 23898daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod inline const char *get_start (void) const { return start; } 23998daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod inline const char *get_end (void) const { return end; } 24098daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod inline bool is_writable (void) const { return writable; } 24198daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod inline unsigned int get_edit_count (void) const { return this->edit_count; } 24298daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod 24398daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod inline void reset_edit_count (void) { this->edit_count = 0; } 24498daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod 24520e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod public: 24620e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod unsigned int debug_depth; 24720e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod 24898daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod private: 24998daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod const char *start, *end; 25098daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod bool writable; 25198daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod unsigned int edit_count; 25298daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod hb_blob_t *blob; 25398daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod}; 254815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod 255577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 25664d3fc8d0dada673245cc8c0b1c12cd849b30997Behdad Esfahbod#define SANITIZE(X) likely ((X).sanitize (SANITIZE_ARG)) 257577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 258bb029af943faa9905e652d58856998687e60c31dBehdad Esfahbod#define SANITIZE_WITH_BASE(B,X) likely ((X).sanitize (SANITIZE_ARG, CharP(B))) 259577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 26089da1346ec3a8dec8a368df46d61ca75356e22faBehdad Esfahbod#define SANITIZE_SELF() SANITIZE_MEM(this, sizeof (*this)) 261577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 26220e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod#define SANITIZE_MEM(B,L) likely (context->check (CharP(B), (L))) 263577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 26420e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod#define SANITIZE_ARRAY(A,S,L) likely (context->check_array (CharP(A), S, L)) 265815a73e4202ca17677f12e862b70ca8724cf2f57Behdad Esfahbod 266577c1116493d785d3455626612f97dabb383abf0Behdad Esfahbod 2674e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod/* Template to sanitize an object. */ 2684e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbodtemplate <typename Type> 2694e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbodstruct Sanitizer 2704e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod{ 2714e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod static hb_blob_t *sanitize (hb_blob_t *blob) { 272173fde7087c0db3e99409f1119530477c14072f5Behdad Esfahbod hb_sanitize_context_t context[1]; 2734e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod bool sane; 2744e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 275d0b657379bbe63602953412d6bc944b2a0f430ebBehdad Esfahbod /* TODO is_sane() stuff */ 2764e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 2774e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod retry: 278fa030175ca998b00cc42cbced6e98de323ec01ecBehdad Esfahbod if (HB_DEBUG_SANITIZE) 2797d3a126334f8e6f6441561c1bb592bd3fa7a2c5cBehdad Esfahbod fprintf (stderr, "Sanitizer %p start %s\n", blob, HB_FUNC); 2804f3ad9115a4161fc23fa559c26082440196217ecBehdad Esfahbod 28198daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod context->init (blob); 2824e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 28398daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod Type *t = CastP<Type> (const_cast<char *> (context->get_start ())); 2844e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 285173fde7087c0db3e99409f1119530477c14072f5Behdad Esfahbod sane = t->sanitize (SANITIZE_ARG); 2864e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod if (sane) { 28798daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod if (context->get_edit_count ()) { 288fa030175ca998b00cc42cbced6e98de323ec01ecBehdad Esfahbod if (HB_DEBUG_SANITIZE) 289fa030175ca998b00cc42cbced6e98de323ec01ecBehdad Esfahbod fprintf (stderr, "Sanitizer %p passed first round with %d edits; doing a second round %s\n", 29098daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod blob, context->get_edit_count (), HB_FUNC); 291fa030175ca998b00cc42cbced6e98de323ec01ecBehdad Esfahbod 2928b5346130425c7c101f6ff2432874ba2fd372edcBehdad Esfahbod /* sanitize again to ensure no toe-stepping */ 29398daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod context->reset_edit_count (); 294173fde7087c0db3e99409f1119530477c14072f5Behdad Esfahbod sane = t->sanitize (SANITIZE_ARG); 29598daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod if (context->get_edit_count ()) { 296fa030175ca998b00cc42cbced6e98de323ec01ecBehdad Esfahbod if (HB_DEBUG_SANITIZE) 297fa030175ca998b00cc42cbced6e98de323ec01ecBehdad Esfahbod fprintf (stderr, "Sanitizer %p requested %d edits in second round; FAILLING %s\n", 29898daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod blob, context->get_edit_count (), HB_FUNC); 2994e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod sane = false; 3004e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3014e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 30298daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod context->finish (); 3034e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } else { 30498daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod unsigned int edit_count = context->get_edit_count (); 30598daaf183d6dbf2b68959da608cd9876ba55d7aaBehdad Esfahbod context->finish (); 306977eeb714454630bd045bb11f58ff6397f10b143Behdad Esfahbod if (edit_count && !hb_blob_is_writable (blob) && hb_blob_try_writable (blob)) { 307977eeb714454630bd045bb11f58ff6397f10b143Behdad Esfahbod /* ok, we made it writable by relocating. try again */ 308fa030175ca998b00cc42cbced6e98de323ec01ecBehdad Esfahbod if (HB_DEBUG_SANITIZE) 3097d3a126334f8e6f6441561c1bb592bd3fa7a2c5cBehdad Esfahbod fprintf (stderr, "Sanitizer %p retry %s\n", blob, HB_FUNC); 3104e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod goto retry; 3114e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3124e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3134e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 314fa030175ca998b00cc42cbced6e98de323ec01ecBehdad Esfahbod if (HB_DEBUG_SANITIZE) 3157d3a126334f8e6f6441561c1bb592bd3fa7a2c5cBehdad Esfahbod fprintf (stderr, "Sanitizer %p %s %s\n", blob, sane ? "passed" : "FAILED", HB_FUNC); 3164e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod if (sane) 3174e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod return blob; 3184e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod else { 3194e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod hb_blob_destroy (blob); 3204e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod return hb_blob_create_empty (); 3214e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3224e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod } 3234e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod}; 3244e8a0602bb0b3cbf7f26cc38790e37cdec7b0b37Behdad Esfahbod 3252d15e72c75931398db5e027e660f1320bb979117Behdad Esfahbod 326f0abcd69408a3af65207cdf8847575ade4579bd4Behdad Esfahbod 327f0abcd69408a3af65207cdf8847575ade4579bd4Behdad Esfahbod 328b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod/* 329b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod * 330bff3c0fde5da04a70d1f7aeeb9fa2a75fe5c07f6Behdad Esfahbod * The OpenType Font File: Data Types 331b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod */ 332b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod 333b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod 334b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod/* "The following data types are used in the OpenType font file. 335b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod * All OpenType fonts use Motorola-style byte ordering (Big Endian):" */ 336b6e62bc5db76ae342177b2b646c37f45eccad975Behdad Esfahbod 3375f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod/* 3385f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod * Int types 3395f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod */ 3405f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod 3416b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 342e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbodtemplate <typename Type, int Bytes> class BEInt; 343e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod 344f1aaa2a43654c28405ffd393de2cb127437c99a5Behdad Esfahbod/* LONGTERMTODO: On machines allowing unaligned access, we can make the 345f1aaa2a43654c28405ffd393de2cb127437c99a5Behdad Esfahbod * following tighter by using byteswap instructions on ints directly. */ 346e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbodtemplate <typename Type> 347e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbodclass BEInt<Type, 2> 348e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod{ 349e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod public: 35001c01618e98283611628cd54d5ba4bf122f24cd9Behdad Esfahbod inline class BEInt<Type,2>& operator = (Type i) { hb_be_uint16_put (v,i); return *this; } 35101c01618e98283611628cd54d5ba4bf122f24cd9Behdad Esfahbod inline operator Type () const { return hb_be_uint16_get (v); } 35201c01618e98283611628cd54d5ba4bf122f24cd9Behdad Esfahbod inline bool operator == (const BEInt<Type, 2>& o) const { return hb_be_uint16_cmp (v, o.v); } 35301c01618e98283611628cd54d5ba4bf122f24cd9Behdad Esfahbod inline bool operator != (const BEInt<Type, 2>& o) const { return !(*this == o); } 354e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod private: uint8_t v[2]; 355e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod}; 356e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbodtemplate <typename Type> 357e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbodclass BEInt<Type, 4> 358e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod{ 359e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod public: 36001c01618e98283611628cd54d5ba4bf122f24cd9Behdad Esfahbod inline class BEInt<Type,4>& operator = (Type i) { hb_be_uint32_put (v,i); return *this; } 36101c01618e98283611628cd54d5ba4bf122f24cd9Behdad Esfahbod inline operator Type () const { return hb_be_uint32_get (v); } 36201c01618e98283611628cd54d5ba4bf122f24cd9Behdad Esfahbod inline bool operator == (const BEInt<Type, 4>& o) const { return hb_be_uint32_cmp (v, o.v); } 36301c01618e98283611628cd54d5ba4bf122f24cd9Behdad Esfahbod inline bool operator != (const BEInt<Type, 4>& o) const { return !(*this == o); } 364e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod private: uint8_t v[4]; 365e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod}; 366e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod 3672467c669c2aee4de2a6621a9d06cba0262376d41Behdad Esfahbod/* Integer types in big-endian order and no alignment requirement */ 368e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbodtemplate <typename Type> 369e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbodstruct IntType 370e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod{ 371e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod static inline unsigned int get_size () { return sizeof (Type); } 37201c01618e98283611628cd54d5ba4bf122f24cd9Behdad Esfahbod inline void set (Type i) { v = i; } 37301c01618e98283611628cd54d5ba4bf122f24cd9Behdad Esfahbod inline operator Type(void) const { return v; } 37401c01618e98283611628cd54d5ba4bf122f24cd9Behdad Esfahbod inline bool operator == (const IntType<Type> &o) const { return v == o.v; } 37501c01618e98283611628cd54d5ba4bf122f24cd9Behdad Esfahbod inline bool operator != (const IntType<Type> &o) const { return v != o.v; } 376e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { 377e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod TRACE_SANITIZE (); 378e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod return SANITIZE_SELF (); 379e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod } 380e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod private: BEInt<Type, sizeof (Type)> v; 381e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod}; 382e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod 383e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbodtypedef IntType<uint16_t> USHORT; /* 16-bit unsigned integer. */ 384e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbodtypedef IntType<int16_t> SHORT; /* 16-bit signed integer. */ 385e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbodtypedef IntType<uint32_t> ULONG; /* 32-bit unsigned integer. */ 386e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbodtypedef IntType<int32_t> LONG; /* 32-bit signed integer. */ 387e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad Esfahbod 388e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad EsfahbodASSERT_SIZE (USHORT, 2); 389e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad EsfahbodASSERT_SIZE (SHORT, 2); 390e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad EsfahbodASSERT_SIZE (ULONG, 4); 391e032ed9f75d4a0f365649a25706871bbb5ae6651Behdad EsfahbodASSERT_SIZE (LONG, 4); 392bff3c0fde5da04a70d1f7aeeb9fa2a75fe5c07f6Behdad Esfahbod 3936b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod/* Array of four uint8s (length = 32 bits) used to identify a script, language 3946b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod * system, feature, or baseline */ 39520cc86b3592db33731de671f008d7d222776be49Behdad Esfahbodstruct Tag : ULONG 39660d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod{ 397befc022affd2386b3f46cd7d11e4262f6c8bce9fBehdad Esfahbod /* What the char* converters return is NOT nul-terminated. Print using "%.4s" */ 3980dfcc13a4668cdd2c2ebdd5f4a7540a51222cf2fBehdad Esfahbod inline operator const char* (void) const { return CharP(this); } 399198facdc55756cb48cdfb8ba7fa50916fac54ec3Behdad Esfahbod inline operator char* (void) { return CharP(this); } 4006b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod}; 401303fe62824d4e99df554b6bfaacba05d068522fbBehdad EsfahbodASSERT_SIZE (Tag, 4); 4029d3677899f90abdc7fb3e3d854db654a8707a84bBehdad EsfahbodDEFINE_NULL_DATA (Tag, 4, " "); 4036b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 4046b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod/* Glyph index number, same as uint16 (length = 16 bits) */ 4056ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbodtypedef USHORT GlyphID; 4066b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 4071f437e6f47fb6c15761021bd2078f31778f2179cBehdad Esfahbod/* Offset to a table, same as uint16 (length = 16 bits), Null offset = 0x0000 */ 4086ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbodtypedef USHORT Offset; 4096ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbod 4106ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbod/* LongOffset to a table, same as uint32 (length = 32 bits), Null offset = 0x00000000 */ 4116ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbodtypedef ULONG LongOffset; 4126ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbod 4136b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 4146b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod/* CheckSum */ 41560d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbodstruct CheckSum : ULONG 41660d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod{ 41760d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod static uint32_t CalcTableChecksum (ULONG *Table, uint32_t Length) 41860d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod { 4196b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod uint32_t Sum = 0L; 4204b8487d83e0c10076a6c573cb3487790ce366607Behdad Esfahbod ULONG *EndPtr = Table+((Length+3) & ~3) / ULONG::get_size (); 4216b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 4226b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod while (Table < EndPtr) 4236b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod Sum += *Table++; 4246b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod return Sum; 4256b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod } 4266b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod}; 4278b8358033184198ff638ee1379093717596e162dBehdad EsfahbodASSERT_SIZE (CheckSum, 4); 4286b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 4296b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 4306b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod/* 4316b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod * Version Numbers 4326b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod */ 4336b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 43487fcdcbe3644da10154688765db2d62eb9ac079aBehdad Esfahbodstruct FixedVersion 43560d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod{ 43609c292e3b688a67fbae67b645d1e6ffcf8d8eb6eBehdad Esfahbod inline operator uint32_t (void) const { return (major << 16) + minor; } 43796908b898476ca5d7da5f386b15be76f9e83d76eBehdad Esfahbod 438cd3827ee567612c5500206b62840702fc956e0f5Behdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { 4393e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 440cd3827ee567612c5500206b62840702fc956e0f5Behdad Esfahbod return SANITIZE_SELF (); 441cd3827ee567612c5500206b62840702fc956e0f5Behdad Esfahbod } 442cd3827ee567612c5500206b62840702fc956e0f5Behdad Esfahbod 4436ad8d5f3c7028147b371137ae4bca6aae66b3489Behdad Esfahbod USHORT major; 44487fcdcbe3644da10154688765db2d62eb9ac079aBehdad Esfahbod USHORT minor; 4456b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod}; 44687fcdcbe3644da10154688765db2d62eb9ac079aBehdad EsfahbodASSERT_SIZE (FixedVersion, 4); 4476b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 44892b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 44992b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 4505f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod/* 45192b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod * Template subclasses of Offset and LongOffset that do the dereferencing. 452f0abcd69408a3af65207cdf8847575ade4579bd4Behdad Esfahbod * Use: (base+offset) 4535f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod */ 4545f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod 45592b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename OffsetType, typename Type> 45692b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct GenericOffsetTo : OffsetType 45792b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod{ 45800e23fcc6fd0eee5c582251bf3de6a2703fbbd3eBehdad Esfahbod inline const Type& operator () (const void *base) const 45992b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod { 46092b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod unsigned int offset = *this; 46164d3fc8d0dada673245cc8c0b1c12cd849b30997Behdad Esfahbod if (unlikely (!offset)) return Null(Type); 462a3263aa773ad7a914496792466c69047048b093cBehdad Esfahbod return StructAtOffset<Type> (*CharP(base), offset); 46392b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod } 46492b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 46562c0fd75737a69721dbf29e773405a4c529f8b6dBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, void *base) { 4663e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 46795528131b5ab9fc9e265ace715832135ebd457a4Behdad Esfahbod if (!SANITIZE_SELF ()) return false; 46892b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod unsigned int offset = *this; 46964d3fc8d0dada673245cc8c0b1c12cd849b30997Behdad Esfahbod if (unlikely (!offset)) return true; 4702226fc93d1427b8830bfb892fe1b25b488ea36dcBehdad Esfahbod Type &obj = StructAtOffset<Type> (*CharP(base), offset); 4712226fc93d1427b8830bfb892fe1b25b488ea36dcBehdad Esfahbod return likely (obj.sanitize (SANITIZE_ARG)) || neuter (SANITIZE_ARG); 47292b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod } 4734a446ac35136eff23d55f47bdd7b40095ad707abBehdad Esfahbod template <typename T> 4744a446ac35136eff23d55f47bdd7b40095ad707abBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, void *base, T user_data) { 4753e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 47695528131b5ab9fc9e265ace715832135ebd457a4Behdad Esfahbod if (!SANITIZE_SELF ()) return false; 47742b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod unsigned int offset = *this; 47864d3fc8d0dada673245cc8c0b1c12cd849b30997Behdad Esfahbod if (unlikely (!offset)) return true; 4792226fc93d1427b8830bfb892fe1b25b488ea36dcBehdad Esfahbod Type &obj = StructAtOffset<Type> (*CharP(base), offset); 4802226fc93d1427b8830bfb892fe1b25b488ea36dcBehdad Esfahbod return likely (obj.sanitize (SANITIZE_ARG, user_data)) || neuter (SANITIZE_ARG); 481c9f14687a30866181feb57ee2736a147ec9f25a1Behdad Esfahbod } 482c9f14687a30866181feb57ee2736a147ec9f25a1Behdad Esfahbod 483c9f14687a30866181feb57ee2736a147ec9f25a1Behdad Esfahbod private: 484c9f14687a30866181feb57ee2736a147ec9f25a1Behdad Esfahbod /* Set the offset to Null */ 485c9f14687a30866181feb57ee2736a147ec9f25a1Behdad Esfahbod inline bool neuter (SANITIZE_ARG_DEF) { 48620e3dd5d292b65f70d2eae63b8d8713a1c889d47Behdad Esfahbod if (context->can_edit (CharP(this), this->get_size ())) { 487c9f14687a30866181feb57ee2736a147ec9f25a1Behdad Esfahbod this->set (0); /* 0 is Null offset */ 488c9f14687a30866181feb57ee2736a147ec9f25a1Behdad Esfahbod return true; 489c9f14687a30866181feb57ee2736a147ec9f25a1Behdad Esfahbod } 490c9f14687a30866181feb57ee2736a147ec9f25a1Behdad Esfahbod return false; 49142b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod } 49292b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod}; 49392b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename Base, typename OffsetType, typename Type> 49492b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodinline const Type& operator + (const Base &base, GenericOffsetTo<OffsetType, Type> offset) { return offset (base); } 49592b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 4965f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbodtemplate <typename Type> 49792b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct OffsetTo : GenericOffsetTo<Offset, Type> {}; 49892b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 49992b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename Type> 50092b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct LongOffsetTo : GenericOffsetTo<LongOffset, Type> {}; 501bff3c0fde5da04a70d1f7aeeb9fa2a75fe5c07f6Behdad Esfahbod 502bff3c0fde5da04a70d1f7aeeb9fa2a75fe5c07f6Behdad Esfahbod 50392b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod/* 50492b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod * Array Types 50592b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod */ 50692b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbod 50792b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodtemplate <typename LenType, typename Type> 50892b5dd8e71e1bdeaa6e86a53f167683a3f5f4289Behdad Esfahbodstruct GenericArrayOf 50960d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod{ 5102cb08458f674301cde9d962c13911035a251f7c5Behdad Esfahbod const Type *array(void) const { return &StructAfter<Type> (len); } 5112e2f43edf2f49f4047e28b1ce2ea95938536de9cBehdad Esfahbod Type *array(void) { return &StructAfter<Type> (len); } 512d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod 5134f5f1c34dda1e0629bfa6d7b0ffa2e1ce003b7c7Behdad Esfahbod const Type *sub_array (unsigned int start_offset, unsigned int *pcount /* IN/OUT */) const 51448de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod { 51548de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod unsigned int count = len; 51664d3fc8d0dada673245cc8c0b1c12cd849b30997Behdad Esfahbod if (unlikely (start_offset > count)) 51748de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod count = 0; 51848de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod else 51948de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod count -= start_offset; 52048de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod count = MIN (count, *pcount); 52148de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod *pcount = count; 5222cb08458f674301cde9d962c13911035a251f7c5Behdad Esfahbod return array() + start_offset; 52348de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod } 52448de3730cdf91b9f6473509e22260a902ccec992Behdad Esfahbod 52560d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod inline const Type& operator [] (unsigned int i) const 52660d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod { 52764d3fc8d0dada673245cc8c0b1c12cd849b30997Behdad Esfahbod if (unlikely (i >= len)) return Null(Type); 5282cb08458f674301cde9d962c13911035a251f7c5Behdad Esfahbod return array()[i]; 5295f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod } 53060d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod inline unsigned int get_size () const 5314b8487d83e0c10076a6c573cb3487790ce366607Behdad Esfahbod { return len.get_size () + len * Type::get_size (); } 532e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbod 53320b035dad41247076815a2bbb0346d63058b322fBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { 5343e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 53564d3fc8d0dada673245cc8c0b1c12cd849b30997Behdad Esfahbod if (!likely (sanitize_shallow (SANITIZE_ARG))) return false; 53640d73bc68dd828cf68f90fde0f9499a6ce9fbb19Behdad Esfahbod /* Note: for structs that do not reference other structs, 53740d73bc68dd828cf68f90fde0f9499a6ce9fbb19Behdad Esfahbod * we do not need to call their sanitize() as we already did 53840d73bc68dd828cf68f90fde0f9499a6ce9fbb19Behdad Esfahbod * a bound check on the aggregate array size, hence the return. 53940d73bc68dd828cf68f90fde0f9499a6ce9fbb19Behdad Esfahbod */ 5403564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod return true; 54140d73bc68dd828cf68f90fde0f9499a6ce9fbb19Behdad Esfahbod /* We do keep this code though to make sure the structs pointed 54240d73bc68dd828cf68f90fde0f9499a6ce9fbb19Behdad Esfahbod * to do have a simple sanitize(), ie. they do not reference 54340d73bc68dd828cf68f90fde0f9499a6ce9fbb19Behdad Esfahbod * other structs. */ 54470de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod unsigned int count = len; 54570de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 546d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod if (!SANITIZE (array()[i])) 54770de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod return false; 5489bd629ccd064e739789e504c41ad875eed93abbaBehdad Esfahbod return true; 54970de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod } 55062c0fd75737a69721dbf29e773405a4c529f8b6dBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, void *base) { 5513e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 55264d3fc8d0dada673245cc8c0b1c12cd849b30997Behdad Esfahbod if (!likely (sanitize_shallow (SANITIZE_ARG))) return false; 553e6ab2c59ba2d37942ac5fcbfe61d38b7e359ac8cBehdad Esfahbod unsigned int count = len; 554e6ab2c59ba2d37942ac5fcbfe61d38b7e359ac8cBehdad Esfahbod for (unsigned int i = 0; i < count; i++) 555d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod if (!array()[i].sanitize (SANITIZE_ARG, base)) 556e6ab2c59ba2d37942ac5fcbfe61d38b7e359ac8cBehdad Esfahbod return false; 5579bd629ccd064e739789e504c41ad875eed93abbaBehdad Esfahbod return true; 558e6ab2c59ba2d37942ac5fcbfe61d38b7e359ac8cBehdad Esfahbod } 5594a446ac35136eff23d55f47bdd7b40095ad707abBehdad Esfahbod template <typename T> 5604a446ac35136eff23d55f47bdd7b40095ad707abBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, void *base, T user_data) { 5613e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 56264d3fc8d0dada673245cc8c0b1c12cd849b30997Behdad Esfahbod if (!likely (sanitize_shallow (SANITIZE_ARG))) return false; 56342b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod unsigned int count = len; 56442b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 565d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod if (!array()[i].sanitize (SANITIZE_ARG, base, user_data)) 56642b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod return false; 5679bd629ccd064e739789e504c41ad875eed93abbaBehdad Esfahbod return true; 56842b778f89e0818fe06910ce04e2203485823da09Behdad Esfahbod } 56970de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod 57030fa2821c277df99a14089749313dfe2b541e2d0Behdad Esfahbod private: 57130fa2821c277df99a14089749313dfe2b541e2d0Behdad Esfahbod inline bool sanitize_shallow (SANITIZE_ARG_DEF) { 57230fa2821c277df99a14089749313dfe2b541e2d0Behdad Esfahbod TRACE_SANITIZE (); 57330fa2821c277df99a14089749313dfe2b541e2d0Behdad Esfahbod return SANITIZE_SELF() && SANITIZE_ARRAY (this, Type::get_size (), len); 57430fa2821c277df99a14089749313dfe2b541e2d0Behdad Esfahbod } 57530fa2821c277df99a14089749313dfe2b541e2d0Behdad Esfahbod 57630fa2821c277df99a14089749313dfe2b541e2d0Behdad Esfahbod public: 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 { 60764d3fc8d0dada673245cc8c0b1c12cd849b30997Behdad Esfahbod if (unlikely (i >= this->len)) return Null(Type); 6082cb08458f674301cde9d962c13911035a251f7c5Behdad Esfahbod return this+this->array()[i]; 60980e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod } 61080e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod 61180e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { 6123e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 61362c0fd75737a69721dbf29e773405a4c529f8b6dBehdad Esfahbod return OffsetArrayOf<Type>::sanitize (SANITIZE_ARG, CharP(this)); 61480e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod } 6154a446ac35136eff23d55f47bdd7b40095ad707abBehdad Esfahbod template <typename T> 6164a446ac35136eff23d55f47bdd7b40095ad707abBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF, T user_data) { 6173e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 61862c0fd75737a69721dbf29e773405a4c529f8b6dBehdad Esfahbod return OffsetArrayOf<Type>::sanitize (SANITIZE_ARG, CharP(this), user_data); 61980e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod } 62080e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod}; 62180e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod 62280e2aa2e1bfa2c8ecedcfa4cce8cadeb15792ac3Behdad Esfahbod 623e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbod/* An array with a USHORT number of elements, 624e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbod * starting at second element. */ 625e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbodtemplate <typename Type> 62660d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbodstruct HeadlessArrayOf 62760d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod{ 6282cb08458f674301cde9d962c13911035a251f7c5Behdad Esfahbod const Type *array(void) const { return &StructAfter<Type> (len); } 6292e2f43edf2f49f4047e28b1ce2ea95938536de9cBehdad Esfahbod Type *array(void) { return &StructAfter<Type> (len); } 630d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod 63160d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod inline const Type& operator [] (unsigned int i) const 63260d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod { 63364d3fc8d0dada673245cc8c0b1c12cd849b30997Behdad Esfahbod if (unlikely (i >= len || !i)) return Null(Type); 6342cb08458f674301cde9d962c13911035a251f7c5Behdad Esfahbod return array()[i-1]; 635e8cbaaf6d538036ff9b880b018db402e0895ed01Behdad Esfahbod } 63660d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod inline unsigned int get_size () const 6374b8487d83e0c10076a6c573cb3487790ce366607Behdad Esfahbod { return len.get_size () + (len ? len - 1 : 0) * Type::get_size (); } 6385f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod 639e5546a4352c54311ac4a9ef138b187378155ebe1Behdad Esfahbod inline bool sanitize_shallow (SANITIZE_ARG_DEF) { 640e5546a4352c54311ac4a9ef138b187378155ebe1Behdad Esfahbod TRACE_SANITIZE (); 641e5546a4352c54311ac4a9ef138b187378155ebe1Behdad Esfahbod return SANITIZE_SELF() && SANITIZE_ARRAY (this, Type::get_size (), len); 642e5546a4352c54311ac4a9ef138b187378155ebe1Behdad Esfahbod } 643e5546a4352c54311ac4a9ef138b187378155ebe1Behdad Esfahbod 64420b035dad41247076815a2bbb0346d63058b322fBehdad Esfahbod inline bool sanitize (SANITIZE_ARG_DEF) { 6453e2401f6c53d2b047954d75c37aef5e5e7cdc51aBehdad Esfahbod TRACE_SANITIZE (); 64664d3fc8d0dada673245cc8c0b1c12cd849b30997Behdad Esfahbod if (!likely (sanitize_shallow (SANITIZE_ARG))) return false; 64740d73bc68dd828cf68f90fde0f9499a6ce9fbb19Behdad Esfahbod /* Note: for structs that do not reference other structs, 64840d73bc68dd828cf68f90fde0f9499a6ce9fbb19Behdad Esfahbod * we do not need to call their sanitize() as we already did 64940d73bc68dd828cf68f90fde0f9499a6ce9fbb19Behdad Esfahbod * a bound check on the aggregate array size, hence the return. 65040d73bc68dd828cf68f90fde0f9499a6ce9fbb19Behdad Esfahbod */ 6513564ee5216004d45d30b0ded61184cf8dde5dd89Behdad Esfahbod return true; 65240d73bc68dd828cf68f90fde0f9499a6ce9fbb19Behdad Esfahbod /* We do keep this code though to make sure the structs pointed 65340d73bc68dd828cf68f90fde0f9499a6ce9fbb19Behdad Esfahbod * to do have a simple sanitize(), ie. they do not reference 65440d73bc68dd828cf68f90fde0f9499a6ce9fbb19Behdad Esfahbod * other structs. */ 65515164d9258a74122a4db748d35532bd72c47cec2Behdad Esfahbod unsigned int count = len ? len - 1 : 0; 656d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod Type *a = array(); 65770de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod for (unsigned int i = 0; i < count; i++) 658d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod if (!SANITIZE (a[i])) 65970de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod return false; 6609bd629ccd064e739789e504c41ad875eed93abbaBehdad Esfahbod return true; 66170de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod } 66270de50c11ed7037b20eb6814ff60f6e32a9944e4Behdad Esfahbod 6635f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod USHORT len; 664d3480ba37fbb5d4be75b094060f5b2f1ce98fb53Behdad Esfahbod/*Type array[VAR];*/ 6655f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod}; 6665f810363acc3ad3cba631a68620e3d37e54c95c4Behdad Esfahbod 6676b4ce01da121e12e1c78ad7eaedf469f35f3568dBehdad Esfahbod 6681e91434569a9e9535ef021ca52b60b2e2af75d19Behdad Esfahbod#endif /* HB_OPEN_TYPE_PRIVATE_HH */ 669