From 8c2ccb59caf882ac518eda1f570ea731d4466216 Mon Sep 17 00:00:00 2001 From: shin Date: Tue, 28 Dec 1999 02:37:14 +0000 Subject: Getaddrinfo(), getnameinfo(), and etc support in libc/net. Several udp and raw apps IPv6 support. Reviewed by: freebsd-arch, cvs-committers Obtained from: KAME project --- include/netdb.h | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ include/resolv.h | 19 ++++++++++++++ 2 files changed, 96 insertions(+) (limited to 'include') diff --git a/include/netdb.h b/include/netdb.h index 987523e..4206c73 100644 --- a/include/netdb.h +++ b/include/netdb.h @@ -62,6 +62,7 @@ #define _NETDB_H_ #include +#include #ifndef _PATH_HEQUIV # define _PATH_HEQUIV "/etc/hosts.equiv" @@ -111,6 +112,17 @@ struct protoent { int p_proto; /* protocol # */ }; +struct addrinfo { + int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */ + 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 */ +}; + /* * Error return codes from gethostbyname() and gethostbyaddr() * (left in extern int h_errno). @@ -124,15 +136,74 @@ struct protoent { #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() + */ +#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_RESNULL 14 +#define EAI_MAX 15 + +/* + * Flag values for getaddrinfo() + */ +#define AI_PASSIVE 0x00000001 /* get address to use bind() */ +#define AI_CANONNAME 0x00000002 /* fill ai_canonname */ +#define AI_NUMERICHOST 0x00000004 /* prevent name resolution */ +/* valid flags for addrinfo */ +#define AI_MASK (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST) + +#define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */ +#define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */ +#define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */ +#define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */ +/* special recommended flags for getipnodebyname */ +#define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG) + +/* + * Constants for getnameinfo() + */ +#define NI_MAXHOST 1025 +#define NI_MAXSERV 32 + +/* + * Flag values for getnameinfo() + */ +#define NI_NOFQDN 0x00000001 +#define NI_NUMERICHOST 0x00000002 +#define NI_NAMEREQD 0x00000004 +#define NI_NUMERICSERV 0x00000008 +#define NI_DGRAM 0x00000010 +#define NI_WITHSCOPEID 0x00000020 + +/* + * Scope delimit character + */ +#define SCOPE_DELIMITER '@' + __BEGIN_DECLS void endhostent __P((void)); void endnetent __P((void)); void endprotoent __P((void)); void endservent __P((void)); +void freehostent __P((struct hostent *)); struct hostent *gethostbyaddr __P((const char *, int, int)); struct hostent *gethostbyname __P((const char *)); struct hostent *gethostbyname2 __P((const char *, int)); struct hostent *gethostent __P((void)); +struct hostent *getipnodebyaddr __P((const void *, size_t, int, int *)); +struct hostent *getipnodebyname __P((const char *, int, int, int *)); struct netent *getnetbyaddr __P((unsigned long, int)); struct netent *getnetbyname __P((const char *)); struct netent *getnetent __P((void)); @@ -148,6 +219,12 @@ void sethostent __P((int)); /* void sethostfile __P((const char *)); */ void setnetent __P((int)); void setprotoent __P((int)); +int getaddrinfo __P((const char *, const char *, + const struct addrinfo *, struct addrinfo **)); +int getnameinfo __P((const struct sockaddr *, size_t, char *, + size_t, char *, size_t, int)); +void freeaddrinfo __P((struct addrinfo *)); +char *gai_strerror __P((int)); void setservent __P((int)); /* diff --git a/include/resolv.h b/include/resolv.h index e44e43a..4a0cf74 100644 --- a/include/resolv.h +++ b/include/resolv.h @@ -60,6 +60,7 @@ #include #include #include +#include #include /* @@ -116,6 +117,21 @@ struct __res_state { char pad[72]; /* on an i386 this means 512b total */ }; +/* for INET6 */ +/* + * replacement of __res_state, separated to keep binary compatibility. + */ +struct __res_state_ext { + struct sockaddr_storage nsaddr_list[MAXNS]; + struct { + int af; /* address family for addr, mask */ + union { + struct in_addr ina; + struct in6_addr in6a; + } addr, mask; + } sort_list[MAXRESOLVSORT]; +}; + /* * Resolver options (keep these in synch with res_debug.c, please) */ @@ -181,6 +197,9 @@ struct res_sym { }; extern struct __res_state _res; +/* for INET6 */ +extern struct __res_state_ext _res_ext; + extern const struct res_sym __p_class_syms[]; extern const struct res_sym __p_type_syms[]; -- cgit v1.1