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) 2016-2021 Sebastian Pipping <sebastian@pipping.org>
32    Copyright (c) 2018      Yury Gribov <tetra2005@gmail.com>
33    Copyright (c) 2019      David Loffredo <loffredo@steptools.com>
34    Licensed under the MIT license:
35 
36    Permission is  hereby granted,  free of charge,  to any  person obtaining
37    a  copy  of  this  software   and  associated  documentation  files  (the
38    "Software"),  to  deal in  the  Software  without restriction,  including
39    without  limitation the  rights  to use,  copy,  modify, merge,  publish,
40    distribute, sublicense, and/or sell copies of the Software, and to permit
41    persons  to whom  the Software  is  furnished to  do so,  subject to  the
42    following conditions:
43 
44    The above copyright  notice and this permission notice  shall be included
45    in all copies or substantial portions of the Software.
46 
47    THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
48    EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
49    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
50    NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
51    DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
52    OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
53    USE OR OTHER DEALINGS IN THE SOFTWARE.
54 */
55 
56 #if defined(__GNUC__) && defined(__i386__) && ! defined(__MINGW32__)
57 /* We'll use this version by default only where we know it helps.
58 
59    regparm() generates warnings on Solaris boxes.   See SF bug #692878.
60 
61    Instability reported with egcs on a RedHat Linux 7.3.
62    Let's comment out:
63    #define FASTCALL __attribute__((stdcall, regparm(3)))
64    and let's try this:
65 */
66 #  define FASTCALL __attribute__((regparm(3)))
67 #  define PTRFASTCALL __attribute__((regparm(3)))
68 #endif
69 
70 /* Using __fastcall seems to have an unexpected negative effect under
71    MS VC++, especially for function pointers, so we won't use it for
72    now on that platform. It may be reconsidered for a future release
73    if it can be made more effective.
74    Likely reason: __fastcall on Windows is like stdcall, therefore
75    the compiler cannot perform stack optimizations for call clusters.
76 */
77 
78 /* Make sure all of these are defined if they aren't already. */
79 
80 #ifndef FASTCALL
81 #  define FASTCALL
82 #endif
83 
84 #ifndef PTRCALL
85 #  define PTRCALL
86 #endif
87 
88 #ifndef PTRFASTCALL
89 #  define PTRFASTCALL
90 #endif
91 
92 #ifndef XML_MIN_SIZE
93 #  if ! defined(__cplusplus) && ! defined(inline)
94 #    ifdef __GNUC__
95 #      define inline __inline
96 #    endif /* __GNUC__ */
97 #  endif
98 #endif /* XML_MIN_SIZE */
99 
100 #ifdef __cplusplus
101 #  define inline inline
102 #else
103 #  ifndef inline
104 #    define inline
105 #  endif
106 #endif
107 
108 #include <limits.h> // ULONG_MAX
109 
110 #if defined(_WIN32) && ! defined(__USE_MINGW_ANSI_STDIO)
111 #  define EXPAT_FMT_ULL(midpart) "%" midpart "I64u"
112 #  if defined(_WIN64) // Note: modifiers "td" and "zu" do not work for MinGW
113 #    define EXPAT_FMT_PTRDIFF_T(midpart) "%" midpart "I64d"
114 #    define EXPAT_FMT_SIZE_T(midpart) "%" midpart "I64u"
115 #  else
116 #    define EXPAT_FMT_PTRDIFF_T(midpart) "%" midpart "d"
117 #    define EXPAT_FMT_SIZE_T(midpart) "%" midpart "u"
118 #  endif
119 #else
120 #  define EXPAT_FMT_ULL(midpart) "%" midpart "llu"
121 #  if ! defined(ULONG_MAX)
122 #    error Compiler did not define ULONG_MAX for us
123 #  elif ULONG_MAX == 18446744073709551615u // 2^64-1
124 #    define EXPAT_FMT_PTRDIFF_T(midpart) "%" midpart "ld"
125 #    define EXPAT_FMT_SIZE_T(midpart) "%" midpart "lu"
126 #  else
127 #    define EXPAT_FMT_PTRDIFF_T(midpart) "%" midpart "d"
128 #    define EXPAT_FMT_SIZE_T(midpart) "%" midpart "u"
129 #  endif
130 #endif
131 
132 #ifndef UNUSED_P
133 #  define UNUSED_P(p) (void)p
134 #endif
135 
136 /* NOTE BEGIN If you ever patch these defaults to greater values
137               for non-attack XML payload in your environment,
138               please file a bug report with libexpat.  Thank you!
139 */
140 #define EXPAT_BILLION_LAUGHS_ATTACK_PROTECTION_MAXIMUM_AMPLIFICATION_DEFAULT   \
141   100.0f
142 #define EXPAT_BILLION_LAUGHS_ATTACK_PROTECTION_ACTIVATION_THRESHOLD_DEFAULT    \
143   8388608 // 8 MiB, 2^23
144 /* NOTE END */
145 
146 #include "expat.h" // so we can use type XML_Parser below
147 
148 #ifdef __cplusplus
149 extern "C" {
150 #endif
151 
152 void _INTERNAL_trim_to_complete_utf8_characters(const char *from,
153                                                 const char **fromLimRef);
154 
155 #if defined(XML_DTD)
156 unsigned long long testingAccountingGetCountBytesDirect(XML_Parser parser);
157 unsigned long long testingAccountingGetCountBytesIndirect(XML_Parser parser);
158 const char *unsignedCharToPrintable(unsigned char c);
159 #endif
160 
161 #ifdef __cplusplus
162 }
163 #endif
164