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A C library for asynchronous DNS requests (grpc依赖)
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c-ares/include/ares_build.h.dist

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Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
#ifndef __CARES_BUILD_H
#define __CARES_BUILD_H
mailing list: moved to lists.haxx.se
3 years ago
/* Copyright (C) 2009 - 2021 by Daniel Stenberg et al
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of M.I.T. not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. M.I.T. makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*/
/* ================================================================ */
/* NOTES FOR CONFIGURE CAPABLE SYSTEMS */
/* ================================================================ */
/*
* NOTE 1:
* -------
*
* See file ares_build.h.in, run configure, and forget that this file
* exists it is only used for non-configure systems.
* But you can keep reading if you want ;-)
*
*/
/* ================================================================ */
/* NOTES FOR NON-CONFIGURE SYSTEMS */
/* ================================================================ */
/*
* NOTE 1:
* -------
*
* Nothing in this file is intended to be modified or adjusted by the
* c-ares library user nor by the c-ares library builder.
*
* If you think that something actually needs to be changed, adjusted
* or fixed in this file, then, report it on the c-ares development
mailing list: moved to lists.haxx.se
3 years ago
* mailing list: http://lists.haxx.se/listinfo/c-ares/
Avoid buffer overflow in RC4 loop comparison (#336) The rc4 function iterates over a buffer of size buffer_len who's maximum value is INT_MAX with a counter of type short that is not guaranteed to have maximum size INT_MAX. In circumstances where short is narrower than int and where buffer_len is larger than the maximum value of a short, it may be possible to loop infinitely as counter will overflow and never be greater than or equal to buffer_len. The solution is to make the comparison be between types of equal width. This commit defines counter as an int. Fix By: Fionn Fitzmaurice (@fionn)
4 years ago
*
* Try to keep one section per platform, compiler and architecture,
* otherwise, if an existing section is reused for a different one and
* later on the original is adjusted, probably the piggybacking one can
* be adversely changed.
*
* In order to differentiate between platforms/compilers/architectures
* use only compiler built in predefined preprocessor symbols.
*
* This header file shall only export symbols which are 'cares' or 'CARES'
* prefixed, otherwise public name space would be polluted.
*
* NOTE 2:
* -------
*
* Right now you might be staring at file ares_build.h.dist or ares_build.h,
* this is due to the following reason: file ares_build.h.dist is renamed
* to ares_build.h when the c-ares source code distribution archive file is
* created.
*
* File ares_build.h.dist is not included in the distribution archive.
* File ares_build.h is not present in the git tree.
*
* The distributed ares_build.h file is only intended to be used on systems
* which can not run the also distributed configure script.
*
* On systems capable of running the configure script, the configure process
* will overwrite the distributed ares_build.h file with one that is suitable
* and specific to the library being configured and built, which is generated
* from the ares_build.h.in template file.
*
* If you check out from git on a non-configure platform, you must run the
* appropriate buildconf* script to set up ares_build.h and other local files.
*
*/
/* ================================================================ */
/* DEFINITION OF THESE SYMBOLS SHALL NOT TAKE PLACE ANYWHERE ELSE */
/* ================================================================ */
#ifdef CARES_TYPEOF_ARES_SOCKLEN_T
# error "CARES_TYPEOF_ARES_SOCKLEN_T shall not be defined except in ares_build.h"
Error Compilation_aborted_CARES_TYPEOF_ARES_SOCKLEN_T_already_defined
#endif
/* ================================================================ */
/* EXTERNAL INTERFACE SETTINGS FOR NON-CONFIGURE SYSTEMS ONLY */
/* ================================================================ */
#if defined(__DJGPP__) || defined(__GO32__)
# define CARES_TYPEOF_ARES_SOCKLEN_T int
#elif defined(__SALFORDC__)
# define CARES_TYPEOF_ARES_SOCKLEN_T int
#elif defined(__BORLANDC__)
# define CARES_TYPEOF_ARES_SOCKLEN_T int
#elif defined(__TURBOC__)
# define CARES_TYPEOF_ARES_SOCKLEN_T int
#elif defined(__WATCOMC__)
# define CARES_TYPEOF_ARES_SOCKLEN_T int
#elif defined(__POCC__)
# define CARES_TYPEOF_ARES_SOCKLEN_T int
#elif defined(__LCC__)
# define CARES_TYPEOF_ARES_SOCKLEN_T int
#elif defined(__SYMBIAN32__)
# define CARES_TYPEOF_ARES_SOCKLEN_T unsigned int
#elif defined(__MWERKS__)
# define CARES_TYPEOF_ARES_SOCKLEN_T int
#elif defined(_WIN32_WCE)
# define CARES_TYPEOF_ARES_SOCKLEN_T int
#elif defined(__MINGW32__)
# define CARES_TYPEOF_ARES_SOCKLEN_T int
#elif defined(__VMS)
# define CARES_TYPEOF_ARES_SOCKLEN_T unsigned int
#elif defined(__OS400__)
# if defined(__ILEC400__)
# define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t
# define CARES_PULL_SYS_TYPES_H 1
# define CARES_PULL_SYS_SOCKET_H 1
# endif
#elif defined(__MVS__)
# if defined(__IBMC__) || defined(__IBMCPP__)
# define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t
# define CARES_PULL_SYS_TYPES_H 1
# define CARES_PULL_SYS_SOCKET_H 1
# endif
#elif defined(__370__)
# if defined(__IBMC__) || defined(__IBMCPP__)
# define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t
# define CARES_PULL_SYS_TYPES_H 1
# define CARES_PULL_SYS_SOCKET_H 1
# endif
#elif defined(TPF)
# define CARES_TYPEOF_ARES_SOCKLEN_T int
/* ===================================== */
/* KEEP MSVC THE PENULTIMATE ENTRY */
/* ===================================== */
#elif defined(_MSC_VER)
# define CARES_TYPEOF_ARES_SOCKLEN_T int
/* ===================================== */
/* KEEP GENERIC GCC THE LAST ENTRY */
/* ===================================== */
#elif defined(__GNUC__)
# define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t
# define CARES_PULL_SYS_TYPES_H 1
# define CARES_PULL_SYS_SOCKET_H 1
#else
# error "Unknown non-configure build target!"
Error Compilation_aborted_Unknown_non_configure_build_target
#endif
/* CARES_PULL_SYS_TYPES_H is defined above when inclusion of header file */
/* sys/types.h is required here to properly make type definitions below. */
#ifdef CARES_PULL_SYS_TYPES_H
# include <sys/types.h>
#endif
/* CARES_PULL_SYS_SOCKET_H is defined above when inclusion of header file */
/* sys/socket.h is required here to properly make type definitions below. */
#ifdef CARES_PULL_SYS_SOCKET_H
# include <sys/socket.h>
#endif
/* Data type definition of ares_socklen_t. */
#ifdef CARES_TYPEOF_ARES_SOCKLEN_T
typedef CARES_TYPEOF_ARES_SOCKLEN_T ares_socklen_t;
#endif
/* Data type definition of ares_ssize_t. */
#ifdef _WIN32
# ifdef _WIN64
# define CARES_TYPEOF_ARES_SSIZE_T __int64
# else
# define CARES_TYPEOF_ARES_SSIZE_T long
# endif
#else
# define CARES_TYPEOF_ARES_SSIZE_T ssize_t
#endif
typedef CARES_TYPEOF_ARES_SSIZE_T ares_ssize_t;
#endif /* __CARES_BUILD_H */