Tor 0.4.9.0-alpha-dev
compat_string.h
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1/* Copyright (c) 2003-2004, Roger Dingledine
2 * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
3 * Copyright (c) 2007-2021, The Tor Project, Inc. */
4/* See LICENSE for licensing information */
5
6/**
7 * \file compat_string.h
8 * \brief Header for compat_string.c
9 **/
10
11#ifndef TOR_COMPAT_STRING_H
12#define TOR_COMPAT_STRING_H
13
14#include "orconfig.h"
16
17#include <stddef.h>
18
19/* ===== String compatibility */
20#ifdef _WIN32
21/* Windows doesn't have str(n)casecmp, but mingw defines it: only define it
22 * ourselves if it's missing. */
23#ifndef HAVE_STRNCASECMP
24static inline int strncasecmp(const char *a, const char *b, size_t n);
25static inline int strncasecmp(const char *a, const char *b, size_t n) {
26 return _strnicmp(a,b,n);
27}
28#endif /* !defined(HAVE_STRNCASECMP) */
29#ifndef HAVE_STRCASECMP
30static inline int strcasecmp(const char *a, const char *b);
31static inline int strcasecmp(const char *a, const char *b) {
32 return _stricmp(a,b);
33}
34#endif /* !defined(HAVE_STRCASECMP) */
35#endif /* defined(_WIN32) */
36
37#if defined __APPLE__
38/* On OSX 10.9 and later, the overlap-checking code for strlcat would
39 * appear to have a severe bug that can sometimes cause aborts in Tor.
40 * Instead, use the non-checking variants. This is sad.
41 *
42 * (If --enable-fragile-hardening is passed to configure, we use the hardened
43 * variants, which do not suffer from this issue.)
44 *
45 * See https://bugs.torproject.org/tpo/core/tor/15205.
46 */
47#undef strlcat
48#undef strlcpy
49#endif /* defined __APPLE__ */
50
51#ifndef HAVE_STRLCAT
52size_t strlcat(char *dst, const char *src, size_t siz);
53#endif
54#ifndef HAVE_STRLCPY
55size_t strlcpy(char *dst, const char *src, size_t siz);
56#endif
57
58char *tor_strtok_r_impl(char *str, const char *sep, char **lasts);
59#ifdef HAVE_STRTOK_R
60#define tor_strtok_r(str, sep, lasts) strtok_r(str, sep, lasts)
61#else
62#define tor_strtok_r(str, sep, lasts) tor_strtok_r_impl(str, sep, lasts)
63#endif
64
65#endif /* !defined(TOR_COMPAT_STRING_H) */
Utility macros to handle different features and behavior in different compilers.
char * tor_strtok_r_impl(char *str, const char *sep, char **lasts)
Definition: compat_string.c:45