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Edit File : netdb.h \| Size : 5.89 KB
/* * Copyright (C) Internet Systems Consortium, Inc. ("ISC") * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, you can obtain one at https://mozilla.org/MPL/2.0/. * * See the COPYRIGHT file distributed with this work for additional * information regarding copyright ownership. / /! \file / #ifndef IRS_NETDB_H #define IRS_NETDB_H 1 #include <stddef.h> / Required on FreeBSD (and others?) for size_t. / #include <netdb.h> / Contractual provision. / / * Define if <netdb.h> does not declare struct addrinfo. / #undef ISC_IRS_NEEDADDRINFO #ifdef ISC_IRS_NEEDADDRINFO struct addrinfo { int ai_flags; / AI_PASSIVE, AI_CANONNAME / int ai_family; / PF_xxx / int ai_socktype; / SOCK_xxx / int ai_protocol; / 0 or IPPROTO_xxx for IPv4 and IPv6 / size_t ai_addrlen; / Length of ai_addr / char ai_canonname; /* Canonical name for hostname / struct sockaddr ai_addr; /* Binary address / struct addrinfo ai_next; /* Next structure in linked list / }; #endif / * Undefine all #defines we are interested in as <netdb.h> may or may not have * defined them. / / * Error return codes from gethostbyname() and gethostbyaddr() * (left in extern int h_errno). / #undef NETDB_INTERNAL #undef NETDB_SUCCESS #undef HOST_NOT_FOUND #undef TRY_AGAIN #undef NO_RECOVERY #undef NO_DATA #undef NO_ADDRESS #define NETDB_INTERNAL -1 / see errno / #define NETDB_SUCCESS 0 / no problem / #define HOST_NOT_FOUND 1 / Authoritative Answer Host not found / #define TRY_AGAIN 2 / Non-Authoritive Host not found, or SERVERFAIL / #define NO_RECOVERY 3 / Non recoverable errors, FORMERR, REFUSED, NOTIMP / #define NO_DATA 4 / Valid name, no data record of requested type / #define NO_ADDRESS NO_DATA / no address, look for MX record / / * Error return codes from getaddrinfo(). EAI_INSECUREDATA is our own extension * and it's very unlikely to be already defined, but undef it just in case; it * at least doesn't do any harm. / #undef EAI_ADDRFAMILY #undef EAI_AGAIN #undef EAI_BADFLAGS #undef EAI_FAIL #undef EAI_FAMILY #undef EAI_MEMORY #undef EAI_NODATA #undef EAI_NONAME #undef EAI_SERVICE #undef EAI_SOCKTYPE #undef EAI_SYSTEM #undef EAI_BADHINTS #undef EAI_PROTOCOL #undef EAI_OVERFLOW #undef EAI_INSECUREDATA #undef EAI_MAX #define EAI_ADDRFAMILY 1 / address family for hostname not supported / #define EAI_AGAIN 2 / temporary failure in name resolution / #define EAI_BADFLAGS 3 / invalid value for ai_flags / #define EAI_FAIL 4 / non-recoverable failure in name resolution / #define EAI_FAMILY 5 / ai_family not supported / #define EAI_MEMORY 6 / memory allocation failure / #define EAI_NODATA 7 / no address associated with hostname / #define EAI_NONAME 8 / hostname nor servname provided, or not known / #define EAI_SERVICE 9 / servname not supported for ai_socktype / #define EAI_SOCKTYPE 10 / ai_socktype not supported / #define EAI_SYSTEM 11 / system error returned in errno / #define EAI_BADHINTS 12 #define EAI_PROTOCOL 13 #define EAI_OVERFLOW 14 #define EAI_INSECUREDATA 15 #define EAI_MAX 16 / * Flag values for getaddrinfo() / #undef AI_PASSIVE #undef AI_CANONNAME #undef AI_NUMERICHOST #define AI_PASSIVE 0x00000001 #define AI_CANONNAME 0x00000002 #define AI_NUMERICHOST 0x00000004 / * Flag values for getipnodebyname() / #undef AI_V4MAPPED #undef AI_ALL #undef AI_ADDRCONFIG #undef AI_DEFAULT #define AI_V4MAPPED 0x00000008 #define AI_ALL 0x00000010 #define AI_ADDRCONFIG 0x00000020 #define AI_DEFAULT (AI_V4MAPPED\|AI_ADDRCONFIG) / * Constants for lwres_getnameinfo() / #undef NI_MAXHOST #undef NI_MAXSERV #define NI_MAXHOST 1025 #define NI_MAXSERV 32 / * Flag values for lwres_getnameinfo() / #undef NI_NOFQDN #undef NI_NUMERICHOST #undef NI_NAMEREQD #undef NI_NUMERICSERV #undef NI_DGRAM #undef NI_NUMERICSCOPE #define NI_NOFQDN 0x00000001 #define NI_NUMERICHOST 0x00000002 #define NI_NAMEREQD 0x00000004 #define NI_NUMERICSERV 0x00000008 #define NI_DGRAM 0x00000010 / * Define to map into irs_ namespace. / #define IRS_NAMESPACE #ifdef IRS_NAMESPACE / * Use our versions not the ones from the C library. / #ifdef getnameinfo #undef getnameinfo #endif #define getnameinfo irs_getnameinfo #ifdef getaddrinfo #undef getaddrinfo #endif #define getaddrinfo irs_getaddrinfo #ifdef freeaddrinfo #undef freeaddrinfo #endif #define freeaddrinfo irs_freeaddrinfo #ifdef gai_strerror #undef gai_strerror #endif #define gai_strerror irs_gai_strerror #endif extern int getaddrinfo (const char name, const char service, const struct addrinfo req, struct addrinfo *pai); extern int getnameinfo (const struct sockaddr sa, socklen_t salen, char host, socklen_t hostlen, char serv, socklen_t servlen, int flags); extern void freeaddrinfo (struct addrinfo ai); extern const char gai_strerror (int ecode); /* * Define to map into irs_ namespace. / #define IRS_NAMESPACE #ifdef IRS_NAMESPACE / * Use our versions not the ones from the C library. / #ifdef getnameinfo #undef getnameinfo #endif #define getnameinfo irs_getnameinfo #ifdef getaddrinfo #undef getaddrinfo #endif #define getaddrinfo irs_getaddrinfo #ifdef freeaddrinfo #undef freeaddrinfo #endif #define freeaddrinfo irs_freeaddrinfo #ifdef gai_strerror #undef gai_strerror #endif #define gai_strerror irs_gai_strerror int getaddrinfo(const char hostname, const char servname, const struct addrinfo hints, struct addrinfo *res); int getnameinfo(const struct sockaddr sa, IRS_GETNAMEINFO_SOCKLEN_T salen, char host, IRS_GETNAMEINFO_BUFLEN_T hostlen, char serv, IRS_GETNAMEINFO_BUFLEN_T servlen, IRS_GETNAMEINFO_FLAGS_T flags); void freeaddrinfo (struct addrinfo ai); IRS_GAISTRERROR_RETURN_T gai_strerror(int ecode); #endif / * Tell Emacs to use C mode on this file. * Local variables: * mode: c * End: / #endif / IRS_NETDB_H */ Back

Edit File : netdb.h | Size : 5.89 KB

/*
 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
 *
 * See the COPYRIGHT file distributed with this work for additional
 * information regarding copyright ownership.
 */

/*! \file */

#ifndef IRS_NETDB_H
#define IRS_NETDB_H 1

#include <stddef.h>	/* Required on FreeBSD (and  others?) for size_t. */
#include <netdb.h>	/* Contractual provision. */

/*
 * Define if <netdb.h> does not declare struct addrinfo.
 */
#undef ISC_IRS_NEEDADDRINFO

#ifdef ISC_IRS_NEEDADDRINFO
struct addrinfo {
	int		ai_flags;      /* AI_PASSIVE, AI_CANONNAME */
	int		ai_family;     /* PF_xxx */
	int		ai_socktype;   /* SOCK_xxx */
	int		ai_protocol;   /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
	size_t		ai_addrlen;    /* Length of ai_addr */
	char		*ai_canonname; /* Canonical name for hostname */
	struct sockaddr	*ai_addr;      /* Binary address */
	struct addrinfo	*ai_next;      /* Next structure in linked list */
};
#endif

/*
 * Undefine all #defines we are interested in as <netdb.h> may or may not have
 * defined them.
 */

/*
 * Error return codes from gethostbyname() and gethostbyaddr()
 * (left in extern int h_errno).
 */

#undef	NETDB_INTERNAL
#undef	NETDB_SUCCESS
#undef	HOST_NOT_FOUND
#undef	TRY_AGAIN
#undef	NO_RECOVERY
#undef	NO_DATA
#undef	NO_ADDRESS

#define	NETDB_INTERNAL	-1	/* see errno */
#define	NETDB_SUCCESS	0	/* no problem */
#define	HOST_NOT_FOUND	1 /* Authoritative Answer Host not found */
#define	TRY_AGAIN	2 /* Non-Authoritive Host not found, or SERVERFAIL */
#define	NO_RECOVERY	3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
#define	NO_DATA		4 /* Valid name, no data record of requested type */
#define	NO_ADDRESS	NO_DATA		/* no address, look for MX record */

/*
 * Error return codes from getaddrinfo().  EAI_INSECUREDATA is our own extension
 * and it's very unlikely to be already defined, but undef it just in case; it
 * at least doesn't do any harm.
 */

#undef	EAI_ADDRFAMILY
#undef	EAI_AGAIN
#undef	EAI_BADFLAGS
#undef	EAI_FAIL
#undef	EAI_FAMILY
#undef	EAI_MEMORY
#undef	EAI_NODATA
#undef	EAI_NONAME
#undef	EAI_SERVICE
#undef	EAI_SOCKTYPE
#undef	EAI_SYSTEM
#undef	EAI_BADHINTS
#undef	EAI_PROTOCOL
#undef	EAI_OVERFLOW
#undef	EAI_INSECUREDATA
#undef	EAI_MAX

#define	EAI_ADDRFAMILY	 1	/* address family for hostname not supported */
#define	EAI_AGAIN	 2	/* temporary failure in name resolution */
#define	EAI_BADFLAGS	 3	/* invalid value for ai_flags */
#define	EAI_FAIL	 4	/* non-recoverable failure in name resolution */
#define	EAI_FAMILY	 5	/* ai_family not supported */
#define	EAI_MEMORY	 6	/* memory allocation failure */
#define	EAI_NODATA	 7	/* no address associated with hostname */
#define	EAI_NONAME	 8	/* hostname nor servname provided, or not known */
#define	EAI_SERVICE	 9	/* servname not supported for ai_socktype */
#define	EAI_SOCKTYPE	10	/* ai_socktype not supported */
#define	EAI_SYSTEM	11	/* system error returned in errno */
#define EAI_BADHINTS	12
#define EAI_PROTOCOL	13
#define EAI_OVERFLOW	14
#define EAI_INSECUREDATA 15
#define EAI_MAX		16

/*
 * Flag values for getaddrinfo()
 */
#undef	AI_PASSIVE
#undef	AI_CANONNAME
#undef	AI_NUMERICHOST

#define	AI_PASSIVE	0x00000001
#define	AI_CANONNAME	0x00000002
#define AI_NUMERICHOST	0x00000004

/*
 * Flag values for getipnodebyname()
 */
#undef AI_V4MAPPED
#undef AI_ALL
#undef AI_ADDRCONFIG
#undef AI_DEFAULT

#define AI_V4MAPPED	0x00000008
#define AI_ALL		0x00000010
#define AI_ADDRCONFIG	0x00000020
#define AI_DEFAULT	(AI_V4MAPPED|AI_ADDRCONFIG)

/*
 * Constants for lwres_getnameinfo()
 */
#undef	NI_MAXHOST
#undef	NI_MAXSERV

#define	NI_MAXHOST	1025
#define	NI_MAXSERV	32

/*
 * Flag values for lwres_getnameinfo()
 */
#undef	NI_NOFQDN
#undef	NI_NUMERICHOST
#undef	NI_NAMEREQD
#undef	NI_NUMERICSERV
#undef	NI_DGRAM
#undef	NI_NUMERICSCOPE

#define	NI_NOFQDN	0x00000001
#define	NI_NUMERICHOST	0x00000002
#define	NI_NAMEREQD	0x00000004
#define	NI_NUMERICSERV	0x00000008
#define	NI_DGRAM	0x00000010

/*
 * Define to map into irs_ namespace.
 */

#define IRS_NAMESPACE

#ifdef IRS_NAMESPACE

/*
 * Use our versions not the ones from the C library.
 */

#ifdef getnameinfo
#undef getnameinfo
#endif
#define getnameinfo irs_getnameinfo

#ifdef getaddrinfo
#undef getaddrinfo
#endif
#define getaddrinfo irs_getaddrinfo

#ifdef freeaddrinfo
#undef freeaddrinfo
#endif
#define freeaddrinfo irs_freeaddrinfo

#ifdef gai_strerror
#undef gai_strerror
#endif
#define gai_strerror irs_gai_strerror

#endif

extern int getaddrinfo (const char *name,
			const char *service,
			const struct addrinfo *req,
			struct addrinfo **pai);
extern int getnameinfo (const struct sockaddr *sa,
			socklen_t salen, char *host,
			socklen_t hostlen, char *serv,
			socklen_t servlen, int flags);
extern void freeaddrinfo (struct addrinfo *ai);
extern const char *gai_strerror (int ecode);

/*
 * Define to map into irs_ namespace.
 */

#define IRS_NAMESPACE

#ifdef IRS_NAMESPACE

/*
 * Use our versions not the ones from the C library.
 */

#ifdef getnameinfo
#undef getnameinfo
#endif
#define getnameinfo irs_getnameinfo

#ifdef getaddrinfo
#undef getaddrinfo
#endif
#define getaddrinfo irs_getaddrinfo

#ifdef freeaddrinfo
#undef freeaddrinfo
#endif
#define freeaddrinfo irs_freeaddrinfo

#ifdef gai_strerror
#undef gai_strerror
#endif
#define gai_strerror irs_gai_strerror

int
getaddrinfo(const char *hostname, const char *servname,
	    const struct addrinfo *hints, struct addrinfo **res);

int
getnameinfo(const struct sockaddr *sa, IRS_GETNAMEINFO_SOCKLEN_T salen,
	    char *host, IRS_GETNAMEINFO_BUFLEN_T hostlen,
	    char *serv, IRS_GETNAMEINFO_BUFLEN_T servlen,
	    IRS_GETNAMEINFO_FLAGS_T flags);

void freeaddrinfo (struct addrinfo *ai);

IRS_GAISTRERROR_RETURN_T
gai_strerror(int ecode);

#endif

/*
 * Tell Emacs to use C mode on this file.
 * Local variables:
 * mode: c
 * End:
 */

#endif /* IRS_NETDB_H */

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