188 lines
6.0 KiB
C
188 lines
6.0 KiB
C
/* netdb.h */
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#ifndef NETDB_H
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#define NETDB_H
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#include <netinet/in.h>
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#include <errno.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef MAXHOSTNAMELEN
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#define MAXHOSTNAMELEN 64
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#endif
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#define HOST_NOT_FOUND 1
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#define TRY_AGAIN 2
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#define NO_RECOVERY 3
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#define NO_DATA 4
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#ifndef h_errno
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extern int h_errno;
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extern int *_h_errnop(void);
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#define h_errno (*_h_errnop())
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#endif /* h_errno */
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struct hostent {
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char *h_name;
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char **h_aliases;
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int h_addrtype;
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int h_length;
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char **h_addr_list;
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};
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#define h_addr h_addr_list[0]
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struct servent {
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char *s_name;
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char **s_aliases;
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int s_port;
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char *s_proto;
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};
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/*
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* Assumption here is that a network number
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* fits in an in_addr_t -- probably a poor one.
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*/
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struct netent {
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char *n_name; /* official name of net */
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char **n_aliases; /* alias list */
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int n_addrtype; /* net address type */
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in_addr_t n_net; /* network # */
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};
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struct protoent {
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char *p_name; /* official protocol name */
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char **p_aliases; /* alias list */
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int p_proto; /* protocol # */
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};
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struct addrinfo {
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int ai_flags; /* input flags */
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int ai_family; /* protocol family for socket */
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int ai_socktype; /* socket type */
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int ai_protocol; /* protocol for socket */
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socklen_t ai_addrlen; /* length of socket-address */
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struct sockaddr *ai_addr; /* socket-address for socket */
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char *ai_canonname; /* canonical name for service location (iff req) */
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struct addrinfo *ai_next; /* pointer to next in list */
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};
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struct hostent *gethostbyname(const char *hostname);
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struct hostent *gethostbyaddr(const char *hostname, int len, int type);
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struct servent *getservbyname(const char *name, const char *proto);
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void herror(const char *);
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unsigned long inet_addr(const char *a_addr);
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char *inet_ntoa(struct in_addr addr);
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int gethostname(char *hostname, size_t hostlen);
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/* BE specific, because of lack of UNIX passwd functions */
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int getusername(char *username, size_t userlen);
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int getpassword(char *password, size_t passlen);
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/* These are new! */
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struct netent *getnetbyaddr (in_addr_t, int);
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struct netent *getnetbyname (const char *);
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struct netent *getnetent (void);
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struct protoent *getprotoent (void);
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struct protoent *getprotobyname (const char *);
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struct protoent *getprotobynumber (int);
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struct hostent *gethostbyname2 (const char *, int);
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struct servent *getservbyport (int, const char *);
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int getaddrinfo (const char *, const char *,
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const struct addrinfo *,
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struct addrinfo **);
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void freeaddrinfo (struct addrinfo *);
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int getnameinfo (const struct sockaddr *, socklen_t,
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char *, size_t, char *, size_t,
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int);
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void sethostent (int);
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void setnetent (int);
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void setprotoent (int);
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void setservent (int);
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void endhostent (void);
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void endnetent (void);
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void endprotoent (void);
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void endservent (void);
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#define _PATH_HEQUIV "/etc/hosts.equiv"
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#define _PATH_HOSTS "/etc/hosts"
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#define _PATH_NETWORKS "/etc/networks"
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#define _PATH_PROTOCOLS "/etc/protocols"
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#define _PATH_SERVICES "/etc/services"
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/*
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* Error return codes from gethostbyname() and gethostbyaddr()
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* (left in extern int h_errno).
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*/
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#define NETDB_INTERNAL -1 /* see errno */
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#define NETDB_SUCCESS 0 /* no problem */
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#define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */
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#define TRY_AGAIN 2 /* Non-Authoritive Host not found, or SERVERFAIL */
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#define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
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#define NO_DATA 4 /* Valid name, no data record of requested type */
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#define NO_ADDRESS NO_DATA /* no address, look for MX record */
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/* Values for getaddrinfo() and getnameinfo() */
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#define AI_PASSIVE 1 /* socket address is intended for bind() */
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#define AI_CANONNAME 2 /* request for canonical name */
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#define AI_NUMERICHOST 4 /* don't ever try nameservice */
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#define AI_EXT 8 /* enable non-portable extensions */
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/* valid flags for addrinfo */
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#define AI_MASK (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST)
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#define NI_NUMERICHOST 1 /* return the host address, not the name */
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#define NI_NUMERICSERV 2 /* return the service address, not the name */
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#define NI_NOFQDN 4 /* return a short name if in the local domain */
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#define NI_NAMEREQD 8 /* fail if either host or service name is unknown */
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#define NI_DGRAM 16 /* look up datagram service instead of stream */
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#define NI_WITHSCOPEID 32 /* KAME hack: attach scopeid to host portion */
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#define NI_MAXHOST MAXHOSTNAMELEN /* max host name returned by getnameinfo */
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#define NI_MAXSERV 32 /* max serv. name length returned by getnameinfo */
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/*
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* Scope delimit character (KAME hack)
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*/
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#define SCOPE_DELIMITER '%'
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#define EAI_BADFLAGS -1 /* invalid value for ai_flags */
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#define EAI_NONAME -2 /* name or service is not known */
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#define EAI_AGAIN -3 /* temporary failure in name resolution */
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#define EAI_FAIL -4 /* non-recoverable failure in name resolution */
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#define EAI_NODATA -5 /* no address associated with name */
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#define EAI_FAMILY -6 /* ai_family not supported */
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#define EAI_SOCKTYPE -7 /* ai_socktype not supported */
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#define EAI_SERVICE -8 /* service not supported for ai_socktype */
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#define EAI_ADDRFAMILY -9 /* address family for name not supported */
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#define EAI_MEMORY -10 /* memory allocation failure */
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#define EAI_SYSTEM -11 /* system error (code indicated in errno) */
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#define EAI_BADHINTS -12 /* invalid value for hints */
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#define EAI_PROTOCOL -13 /* resolved protocol is unknown */
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/*
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* Flags for getrrsetbyname()
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*/
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#define RRSET_VALIDATED 1
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/*
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* Return codes for getrrsetbyname()
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*/
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#define ERRSET_SUCCESS 0
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#ifdef __cplusplus
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}
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#endif
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#endif /* NETDB_H */
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