1 /* internal.h 2 3 Internal definitions used by Expat. This is not needed to compile 4 client code. 5 6 The following calling convention macros are defined for frequently 7 called functions: 8 9 FASTCALL - Used for those internal functions that have a simple 10 body and a low number of arguments and local variables. 11 12 PTRCALL - Used for functions called though function pointers. 13 14 PTRFASTCALL - Like PTRCALL, but for low number of arguments. 15 16 inline - Used for selected internal functions for which inlining 17 may improve performance on some platforms. 18 19 Note: Use of these macros is based on judgement, not hard rules, 20 and therefore subject to change. 21 __ __ _ 22 ___\ \/ /_ __ __ _| |_ 23 / _ \\ /| '_ \ / _` | __| 24 | __// \| |_) | (_| | |_ 25 \___/_/\_\ .__/ \__,_|\__| 26 |_| XML parser 27 28 Copyright (c) 2002-2003 Fred L. Drake, Jr. <fdrake@users.sourceforge.net> 29 Copyright (c) 2002-2006 Karl Waclawek <karl@waclawek.net> 30 Copyright (c) 2003 Greg Stein <gstein@users.sourceforge.net> 31 Copyright (c) 2016-2025 Sebastian Pipping <sebastian@pipping.org> 32 Copyright (c) 2018 Yury Gribov <tetra2005@gmail.com> 33 Copyright (c) 2019 David Loffredo <loffredo@steptools.com> 34 Copyright (c) 2023-2024 Sony Corporation / Snild Dolkow <snild@sony.com> 35 Copyright (c) 2024 Taichi Haradaguchi <20001722@ymail.ne.jp> 36 Licensed under the MIT license: 37 38 Permission is hereby granted, free of charge, to any person obtaining 39 a copy of this software and associated documentation files (the 40 "Software"), to deal in the Software without restriction, including 41 without limitation the rights to use, copy, modify, merge, publish, 42 distribute, sublicense, and/or sell copies of the Software, and to permit 43 persons to whom the Software is furnished to do so, subject to the 44 following conditions: 45 46 The above copyright notice and this permission notice shall be included 47 in all copies or substantial portions of the Software. 48 49 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 50 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 51 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN 52 NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 53 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 54 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 55 USE OR OTHER DEALINGS IN THE SOFTWARE. 56 */ 57 58 #if defined(__GNUC__) && defined(__i386__) && ! defined(__MINGW32__) 59 /* We'll use this version by default only where we know it helps. 60 61 regparm() generates warnings on Solaris boxes. See SF bug #692878. 62 63 Instability reported with egcs on a RedHat Linux 7.3. 64 Let's comment out: 65 #define FASTCALL __attribute__((stdcall, regparm(3))) 66 and let's try this: 67 */ 68 # define FASTCALL __attribute__((regparm(3))) 69 # define PTRFASTCALL __attribute__((regparm(3))) 70 #endif 71 72 /* Using __fastcall seems to have an unexpected negative effect under 73 MS VC++, especially for function pointers, so we won't use it for 74 now on that platform. It may be reconsidered for a future release 75 if it can be made more effective. 76 Likely reason: __fastcall on Windows is like stdcall, therefore 77 the compiler cannot perform stack optimizations for call clusters. 78 */ 79 80 /* Make sure all of these are defined if they aren't already. */ 81 82 #ifndef FASTCALL 83 # define FASTCALL 84 #endif 85 86 #ifndef PTRCALL 87 # define PTRCALL 88 #endif 89 90 #ifndef PTRFASTCALL 91 # define PTRFASTCALL 92 #endif 93 94 #ifndef XML_MIN_SIZE 95 # if ! defined(__cplusplus) && ! defined(inline) 96 # ifdef __GNUC__ 97 # define inline __inline 98 # endif /* __GNUC__ */ 99 # endif 100 #endif /* XML_MIN_SIZE */ 101 102 #ifdef __cplusplus 103 # define inline inline 104 #else 105 # ifndef inline 106 # define inline 107 # endif 108 #endif 109 110 #include <limits.h> // ULONG_MAX 111 #include <stddef.h> // size_t 112 113 #if defined(_WIN32) \ 114 && (! defined(__USE_MINGW_ANSI_STDIO) \ 115 || (1 - __USE_MINGW_ANSI_STDIO - 1 == 0)) 116 # define EXPAT_FMT_ULL(midpart) "%" midpart "I64u" 117 # if defined(_WIN64) // Note: modifiers "td" and "zu" do not work for MinGW 118 # define EXPAT_FMT_PTRDIFF_T(midpart) "%" midpart "I64d" 119 # define EXPAT_FMT_SIZE_T(midpart) "%" midpart "I64u" 120 # else 121 # define EXPAT_FMT_PTRDIFF_T(midpart) "%" midpart "d" 122 # define EXPAT_FMT_SIZE_T(midpart) "%" midpart "u" 123 # endif 124 #else 125 # define EXPAT_FMT_ULL(midpart) "%" midpart "llu" 126 # if ! defined(ULONG_MAX) 127 # error Compiler did not define ULONG_MAX for us 128 # elif ULONG_MAX == 18446744073709551615u // 2^64-1 129 # define EXPAT_FMT_PTRDIFF_T(midpart) "%" midpart "ld" 130 # define EXPAT_FMT_SIZE_T(midpart) "%" midpart "lu" 131 # elif defined(EMSCRIPTEN) // 32bit mode Emscripten 132 # define EXPAT_FMT_PTRDIFF_T(midpart) "%" midpart "ld" 133 # define EXPAT_FMT_SIZE_T(midpart) "%" midpart "zu" 134 # else 135 # define EXPAT_FMT_PTRDIFF_T(midpart) "%" midpart "d" 136 # define EXPAT_FMT_SIZE_T(midpart) "%" midpart "u" 137 # endif 138 #endif 139 140 #ifndef UNUSED_P 141 # define UNUSED_P(p) (void)p 142 #endif 143 144 /* NOTE BEGIN If you ever patch these defaults to greater values 145 for non-attack XML payload in your environment, 146 please file a bug report with libexpat. Thank you! 147 */ 148 #define EXPAT_BILLION_LAUGHS_ATTACK_PROTECTION_MAXIMUM_AMPLIFICATION_DEFAULT \ 149 100.0f 150 #define EXPAT_BILLION_LAUGHS_ATTACK_PROTECTION_ACTIVATION_THRESHOLD_DEFAULT \ 151 8388608 // 8 MiB, 2^23 152 153 #define EXPAT_ALLOC_TRACKER_MAXIMUM_AMPLIFICATION_DEFAULT 100.0f 154 #define EXPAT_ALLOC_TRACKER_ACTIVATION_THRESHOLD_DEFAULT \ 155 67108864 // 64 MiB, 2^26 156 157 // NOTE: If function expat_alloc was user facing, EXPAT_MALLOC_ALIGNMENT would 158 // have to take sizeof(long double) into account 159 #define EXPAT_MALLOC_ALIGNMENT sizeof(long long) // largest parser (sub)member 160 #define EXPAT_MALLOC_PADDING ((EXPAT_MALLOC_ALIGNMENT) - sizeof(size_t)) 161 162 /* NOTE END */ 163 164 #include "expat.h" // so we can use type XML_Parser below 165 166 #ifdef __cplusplus 167 extern "C" { 168 #endif 169 170 void _INTERNAL_trim_to_complete_utf8_characters(const char *from, 171 const char **fromLimRef); 172 173 #if defined(XML_GE) && XML_GE == 1 174 unsigned long long testingAccountingGetCountBytesDirect(XML_Parser parser); 175 unsigned long long testingAccountingGetCountBytesIndirect(XML_Parser parser); 176 const char *unsignedCharToPrintable(unsigned char c); 177 #endif 178 179 extern 180 #if ! defined(XML_TESTING) 181 const 182 #endif 183 XML_Bool g_reparseDeferralEnabledDefault; // written ONLY in runtests.c 184 #if defined(XML_TESTING) 185 void *expat_malloc(XML_Parser parser, size_t size, int sourceLine); 186 void expat_free(XML_Parser parser, void *ptr, int sourceLine); 187 void *expat_realloc(XML_Parser parser, void *ptr, size_t size, int sourceLine); 188 extern unsigned int g_bytesScanned; // used for testing only 189 #endif 190 191 #ifdef __cplusplus 192 } 193 #endif 194