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