reentr.h

视频监控网络部分的协议ddns,的模块的实现代码,请大家大胆指正.

#if defined(HAS_GETHOSTBYNAME_R) && (GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSBWRE || GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_S_CSBIE)
#   define GETHOSTBYNAME_R_HAS_BUFFER
#else
#   undef  GETHOSTBYNAME_R_HAS_BUFFER
#endif

/* Any of the gethostent gethostbyaddr gethostbyname using buffer? */

#if (defined(GETHOSTENT_R_HAS_BUFFER) || defined(GETHOSTBYADDR_R_HAS_BUFFER) || defined(GETHOSTBYNAME_R_HAS_BUFFER))
#   define USE_HOSTENT_BUFFER
#else
#   undef  USE_HOSTENT_BUFFER
#endif

/* The getnetent getnetbyaddr getnetbyname using buffer? */

#if defined(HAS_GETNETENT_R) && (GETNETENT_R_PROTO == REENTRANT_PROTO_I_SBWRE || GETNETENT_R_PROTO == REENTRANT_PROTO_I_SBIE || GETNETENT_R_PROTO == REENTRANT_PROTO_S_SBIE || GETNETENT_R_PROTO == REENTRANT_PROTO_S_SBI || GETNETENT_R_PROTO == REENTRANT_PROTO_I_SBI)
#   define GETNETENT_R_HAS_BUFFER
#else
#   undef  GETNETENT_R_HAS_BUFFER
#endif
#if defined(HAS_GETNETBYADDR_R) && (GETNETBYADDR_R_PROTO == REENTRANT_PROTO_I_UISBWRE || GETNETBYADDR_R_PROTO == REENTRANT_PROTO_I_LISBI || GETNETBYADDR_R_PROTO == REENTRANT_PROTO_S_TISBI || GETNETBYADDR_R_PROTO == REENTRANT_PROTO_S_LISBI || GETNETBYADDR_R_PROTO == REENTRANT_PROTO_I_uISBWRE)
#   define GETNETBYADDR_R_HAS_BUFFER
#else
#   undef  GETNETBYADDR_R_HAS_BUFFER
#endif
#if defined(HAS_GETNETBYNAME_R) && (GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSBWRE || GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSBI || GETNETBYNAME_R_PROTO == REENTRANT_PROTO_S_CSBI)
#   define GETNETBYNAME_R_HAS_BUFFER
#else
#   undef  GETNETBYNAME_R_HAS_BUFFER
#endif

/* Any of the getnetent getnetbyaddr getnetbyname using buffer? */

#if (defined(GETNETENT_R_HAS_BUFFER) || defined(GETNETBYADDR_R_HAS_BUFFER) || defined(GETNETBYNAME_R_HAS_BUFFER))
#   define USE_NETENT_BUFFER
#else
#   undef  USE_NETENT_BUFFER
#endif

/* The getprotoent getprotobyname getprotobynumber using buffer? */

#if defined(HAS_GETPROTOENT_R) && (GETPROTOENT_R_PROTO == REENTRANT_PROTO_I_SBWR || GETPROTOENT_R_PROTO == REENTRANT_PROTO_I_SBI || GETPROTOENT_R_PROTO == REENTRANT_PROTO_S_SBI)
#   define GETPROTOENT_R_HAS_BUFFER
#else
#   undef  GETPROTOENT_R_HAS_BUFFER
#endif
#if defined(HAS_GETPROTOBYNAME_R) && (GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSBWR || GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_S_CSBI)
#   define GETPROTOBYNAME_R_HAS_BUFFER
#else
#   undef  GETPROTOBYNAME_R_HAS_BUFFER
#endif
#if defined(HAS_GETPROTOBYNUMBER_R) && (GETPROTOBYNUMBER_R_PROTO == REENTRANT_PROTO_I_ISBWR || GETPROTOBYNUMBER_R_PROTO == REENTRANT_PROTO_S_ISBI)
#   define GETPROTOBYNUMBER_R_HAS_BUFFER
#else
#   undef  GETPROTOBYNUMBER_R_HAS_BUFFER
#endif

/* Any of the getprotoent getprotobyname getprotobynumber using buffer? */

#if (defined(GETPROTOENT_R_HAS_BUFFER) || defined(GETPROTOBYNAME_R_HAS_BUFFER) || defined(GETPROTOBYNUMBER_R_HAS_BUFFER))
#   define USE_PROTOENT_BUFFER
#else
#   undef  USE_PROTOENT_BUFFER
#endif

/* The getservent getservbyname getservbyport using buffer? */

#if defined(HAS_GETSERVENT_R) && (GETSERVENT_R_PROTO == REENTRANT_PROTO_I_SBWR || GETSERVENT_R_PROTO == REENTRANT_PROTO_I_SBI || GETSERVENT_R_PROTO == REENTRANT_PROTO_S_SBI)
#   define GETSERVENT_R_HAS_BUFFER
#else
#   undef  GETSERVENT_R_HAS_BUFFER
#endif
#if defined(HAS_GETSERVBYNAME_R) && (GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSBWR || GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_S_CCSBI)
#   define GETSERVBYNAME_R_HAS_BUFFER
#else
#   undef  GETSERVBYNAME_R_HAS_BUFFER
#endif
#if defined(HAS_GETSERVBYPORT_R) && (GETSERVBYPORT_R_PROTO == REENTRANT_PROTO_I_ICSBWR || GETSERVBYPORT_R_PROTO == REENTRANT_PROTO_S_ICSBI)
#   define GETSERVBYPORT_R_HAS_BUFFER
#else
#   undef  GETSERVBYPORT_R_HAS_BUFFER
#endif

/* Any of the getservent getservbyname getservbyport using buffer? */

#if (defined(GETSERVENT_R_HAS_BUFFER) || defined(GETSERVBYNAME_R_HAS_BUFFER) || defined(GETSERVBYPORT_R_HAS_BUFFER))
#   define USE_SERVENT_BUFFER
#else
#   undef  USE_SERVENT_BUFFER
#endif

/* The gethostent gethostbyaddr gethostbyname using errno? */

#if defined(HAS_GETHOSTENT_R) && (GETHOSTENT_R_PROTO == REENTRANT_PROTO_I_SBWRE || GETHOSTENT_R_PROTO == REENTRANT_PROTO_I_SBIE || GETHOSTENT_R_PROTO == REENTRANT_PROTO_S_SBIE)
#   define GETHOSTENT_R_HAS_ERRNO
#else
#   undef  GETHOSTENT_R_HAS_ERRNO
#endif
#if defined(HAS_GETHOSTBYADDR_R) && (GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_I_CWISBWRE || GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_S_CWISBWIE || GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_S_CWISBIE || GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_S_TWISBIE || GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_S_CIISBIE || GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_S_CSBIE || GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_S_TSBIE || GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_I_TsISBWRE)
#   define GETHOSTBYADDR_R_HAS_ERRNO
#else
#   undef  GETHOSTBYADDR_R_HAS_ERRNO
#endif
#if defined(HAS_GETHOSTBYNAME_R) && (GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSBWRE || GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_S_CSBIE)
#   define GETHOSTBYNAME_R_HAS_ERRNO
#else
#   undef  GETHOSTBYNAME_R_HAS_ERRNO
#endif

/* Any of the gethostent gethostbyaddr gethostbyname using errno? */

#if (defined(GETHOSTENT_R_HAS_ERRNO) || defined(GETHOSTBYADDR_R_HAS_ERRNO) || defined(GETHOSTBYNAME_R_HAS_ERRNO))
#   define USE_HOSTENT_ERRNO
#else
#   undef  USE_HOSTENT_ERRNO
#endif

/* The getnetent getnetbyaddr getnetbyname using errno? */

#if defined(HAS_GETNETENT_R) && (GETNETENT_R_PROTO == REENTRANT_PROTO_I_SBWRE || GETNETENT_R_PROTO == REENTRANT_PROTO_I_SBIE || GETNETENT_R_PROTO == REENTRANT_PROTO_S_SBIE)
#   define GETNETENT_R_HAS_ERRNO
#else
#   undef  GETNETENT_R_HAS_ERRNO
#endif
#if defined(HAS_GETNETBYADDR_R) && (GETNETBYADDR_R_PROTO == REENTRANT_PROTO_I_UISBWRE || GETNETBYADDR_R_PROTO == REENTRANT_PROTO_I_uISBWRE)
#   define GETNETBYADDR_R_HAS_ERRNO
#else
#   undef  GETNETBYADDR_R_HAS_ERRNO
#endif
#if defined(HAS_GETNETBYNAME_R) && (GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSBWRE)
#   define GETNETBYNAME_R_HAS_ERRNO
#else
#   undef  GETNETBYNAME_R_HAS_ERRNO
#endif

/* Any of the getnetent getnetbyaddr getnetbyname using errno? */

#if (defined(GETNETENT_R_HAS_ERRNO) || defined(GETNETBYADDR_R_HAS_ERRNO) || defined(GETNETBYNAME_R_HAS_ERRNO))
#   define USE_NETENT_ERRNO
#else
#   undef  USE_NETENT_ERRNO
#endif


typedef struct {
#ifdef HAS_ASCTIME_R
	char*	_asctime_buffer;
	size_t	_asctime_size;
#endif /* HAS_ASCTIME_R */
#ifdef HAS_CRYPT_R
#if CRYPT_R_PROTO == REENTRANT_PROTO_B_CCD
	CRYPTD* _crypt_data;
#else
	struct crypt_data *_crypt_struct_buffer;
#endif
#endif /* HAS_CRYPT_R */
#ifdef HAS_CTIME_R
	char*	_ctime_buffer;
	size_t	_ctime_size;
#endif /* HAS_CTIME_R */
#ifdef HAS_DRAND48_R
	struct drand48_data _drand48_struct;
	double	_drand48_double;
#endif /* HAS_DRAND48_R */
#ifdef HAS_GETGRNAM_R
	struct group	_grent_struct;
	char*	_grent_buffer;
	size_t	_grent_size;
#   ifdef USE_GRENT_PTR
	struct group*	_grent_ptr;
#   endif
#   ifdef USE_GRENT_FPTR
	FILE*	_grent_fptr;
#   endif
#endif /* HAS_GETGRNAM_R */
#ifdef HAS_GETHOSTBYNAME_R
	struct hostent	_hostent_struct;
#   if GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD
	struct hostent_data	_hostent_data;
#   else
	char*	_hostent_buffer;
	size_t	_hostent_size;
#   endif
#   ifdef USE_HOSTENT_PTR
	struct hostent*	_hostent_ptr;
#   endif
#   ifdef USE_HOSTENT_ERRNO
	int	_hostent_errno;
#   endif 
#endif /* HAS_GETHOSTBYNAME_R */
#ifdef HAS_GETLOGIN_R
	char*	_getlogin_buffer;
	size_t	_getlogin_size;
#endif /* HAS_GETLOGIN_R */
#ifdef HAS_GETNETBYNAME_R
	struct netent	_netent_struct;
#   if GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD
	struct netent_data	_netent_data;
#   else
	char*	_netent_buffer;
	size_t	_netent_size;
#   endif
#   ifdef USE_NETENT_PTR
	struct netent*	_netent_ptr;
#   endif
#   ifdef USE_NETENT_ERRNO
	int	_netent_errno;
#   endif 
#endif /* HAS_GETNETBYNAME_R */
#ifdef HAS_GETPROTOBYNAME_R
	struct protoent	_protoent_struct;
#   if GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD
	struct protoent_data	_protoent_data;
#   else
	char*	_protoent_buffer;
	size_t	_protoent_size;
#   endif
#   ifdef USE_PROTOENT_PTR
	struct protoent*	_protoent_ptr;
#   endif
#   ifdef USE_PROTOENT_ERRNO
	int	_protoent_errno;
#   endif 
#endif /* HAS_GETPROTOBYNAME_R */
#ifdef HAS_GETPWNAM_R
	struct passwd	_pwent_struct;
	char*	_pwent_buffer;
	size_t	_pwent_size;
#   ifdef USE_PWENT_PTR
	struct passwd*	_pwent_ptr;
#   endif
#   ifdef USE_PWENT_FPTR
	FILE*	_pwent_fptr;
#   endif
#endif /* HAS_GETPWNAM_R */
#ifdef HAS_GETSERVBYNAME_R
	struct servent	_servent_struct;
#   if GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD
	struct servent_data	_servent_data;