2 * Copyright (c) 1999 - 2001 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
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39 * uses hints->ai_socktype and hints->ai_protocol
43 get_port_protocol_socktype (const char *servname,
44 const struct addrinfo *hints,
50 const char *proto_str = NULL;
54 if (hints != NULL && hints->ai_protocol != 0) {
55 struct protoent *protoent = getprotobynumber (hints->ai_protocol);
58 return EAI_SOCKTYPE; /* XXX */
60 proto_str = protoent->p_name;
61 *protocol = protoent->p_proto;
65 *socktype = hints->ai_socktype;
67 if (*socktype == SOCK_STREAM) {
68 se = getservbyname (servname, proto_str ? proto_str : "tcp");
69 if (proto_str == NULL)
70 *protocol = IPPROTO_TCP;
71 } else if (*socktype == SOCK_DGRAM) {
72 se = getservbyname (servname, proto_str ? proto_str : "udp");
73 if (proto_str == NULL)
74 *protocol = IPPROTO_UDP;
75 } else if (*socktype == 0) {
76 if (proto_str != NULL) {
77 se = getservbyname (servname, proto_str);
79 se = getservbyname (servname, "tcp");
80 *protocol = IPPROTO_TCP;
81 *socktype = SOCK_STREAM;
83 se = getservbyname (servname, "udp");
84 *protocol = IPPROTO_UDP;
85 *socktype = SOCK_DGRAM;
94 *port = htons(strtol (servname, &endstr, 10));
95 if (servname == endstr)
104 add_one (int port, int protocol, int socktype,
105 struct addrinfo ***ptr,
106 int (*func)(struct addrinfo *, void *data, int port),
113 a = malloc (sizeof (*a));
116 memset (a, 0, sizeof(*a));
119 a->ai_protocol = protocol;
120 a->ai_socktype = socktype;
121 a->ai_canonname = canonname;
122 ret = (*func)(a, data, port);
133 const_v4 (struct addrinfo *a, void *data, int port)
135 struct sockaddr_in *sin4;
136 struct in_addr *addr = (struct in_addr *)data;
138 a->ai_family = PF_INET;
139 a->ai_addrlen = sizeof(*sin4);
140 a->ai_addr = malloc (sizeof(*sin4));
141 if (a->ai_addr == NULL)
143 sin4 = (struct sockaddr_in *)a->ai_addr;
144 memset (sin4, 0, sizeof(*sin4));
145 sin4->sin_family = AF_INET;
146 sin4->sin_port = port;
147 sin4->sin_addr = *addr;
153 const_v6 (struct addrinfo *a, void *data, int port)
155 struct sockaddr_in6 *sin6;
156 struct in6_addr *addr = (struct in6_addr *)data;
158 a->ai_family = PF_INET6;
159 a->ai_addrlen = sizeof(*sin6);
160 a->ai_addr = malloc (sizeof(*sin6));
161 if (a->ai_addr == NULL)
163 sin6 = (struct sockaddr_in6 *)a->ai_addr;
164 memset (sin6, 0, sizeof(*sin6));
165 sin6->sin6_family = AF_INET6;
166 sin6->sin6_port = port;
167 sin6->sin6_addr = *addr;
172 /* this is mostly a hack for some versions of AIX that has a prototype
173 for in6addr_loopback but no actual symbol in libc */
174 #if defined(HAVE_IPV6) && !defined(HAVE_IN6ADDR_LOOPBACK) && defined(IN6ADDR_LOOPBACK_INIT)
175 #define in6addr_loopback _roken_in6addr_loopback
176 struct in6_addr in6addr_loopback = IN6ADDR_LOOPBACK_INIT;
180 get_null (const struct addrinfo *hints,
181 int port, int protocol, int socktype,
182 struct addrinfo **res)
184 struct in_addr v4_addr;
186 struct in6_addr v6_addr;
188 struct addrinfo *first = NULL;
189 struct addrinfo **current = &first;
190 int family = PF_UNSPEC;
194 family = hints->ai_family;
196 if (hints && hints->ai_flags & AI_PASSIVE) {
197 v4_addr.s_addr = INADDR_ANY;
199 v6_addr = in6addr_any;
202 v4_addr.s_addr = htonl(INADDR_LOOPBACK);
204 v6_addr = in6addr_loopback;
209 if (family == PF_INET6 || family == PF_UNSPEC) {
210 ret = add_one (port, protocol, socktype,
211 ¤t, const_v6, &v6_addr, NULL);
214 if (family == PF_INET || family == PF_UNSPEC) {
215 ret = add_one (port, protocol, socktype,
216 ¤t, const_v4, &v4_addr, NULL);
223 add_hostent (int port, int protocol, int socktype,
224 struct addrinfo ***current,
225 int (*func)(struct addrinfo *, void *data, int port),
226 struct hostent *he, int *flags)
229 char *canonname = NULL;
232 if (*flags & AI_CANONNAME) {
233 struct hostent *he2 = NULL;
234 const char *tmp_canon;
236 tmp_canon = hostent_find_fqdn (he);
237 if (strchr (tmp_canon, '.') == NULL) {
240 he2 = getipnodebyaddr (he->h_addr_list[0], he->h_length,
241 he->h_addrtype, &error);
243 const char *tmp = hostent_find_fqdn (he2);
245 if (strchr (tmp, '.') != NULL)
250 canonname = strdup (tmp_canon);
253 if (canonname == NULL)
257 for (h = he->h_addr_list; *h != NULL; ++h) {
258 ret = add_one (port, protocol, socktype,
259 current, func, *h, canonname);
262 if (*flags & AI_CANONNAME) {
263 *flags &= ~AI_CANONNAME;
271 get_number (const char *nodename,
272 const struct addrinfo *hints,
273 int port, int protocol, int socktype,
274 struct addrinfo **res)
276 struct addrinfo *first = NULL;
277 struct addrinfo **current = &first;
278 int family = PF_UNSPEC;
282 family = hints->ai_family;
286 if (family == PF_INET6 || family == PF_UNSPEC) {
287 struct in6_addr v6_addr;
289 if (inet_pton (PF_INET6, nodename, &v6_addr) == 1) {
290 ret = add_one (port, protocol, socktype,
291 ¤t, const_v6, &v6_addr, NULL);
297 if (family == PF_INET || family == PF_UNSPEC) {
298 struct in_addr v4_addr;
300 if (inet_pton (PF_INET, nodename, &v4_addr) == 1) {
301 ret = add_one (port, protocol, socktype,
302 ¤t, const_v4, &v4_addr, NULL);
311 get_nodes (const char *nodename,
312 const struct addrinfo *hints,
313 int port, int protocol, int socktype,
314 struct addrinfo **res)
316 struct addrinfo *first = NULL;
317 struct addrinfo **current = &first;
318 int family = PF_UNSPEC;
320 int ret = EAI_NONAME;
324 family = hints->ai_family;
325 flags = hints->ai_flags;
329 if (family == PF_INET6 || family == PF_UNSPEC) {
332 he = getipnodebyname (nodename, PF_INET6, 0, &error);
335 ret = add_hostent (port, protocol, socktype,
336 ¤t, const_v6, he, &flags);
341 if (family == PF_INET || family == PF_UNSPEC) {
344 he = getipnodebyname (nodename, PF_INET, 0, &error);
347 ret = add_hostent (port, protocol, socktype,
348 ¤t, const_v4, he, &flags);
368 ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
369 getaddrinfo(const char *nodename,
370 const char *servname,
371 const struct addrinfo *hints,
372 struct addrinfo **res)
381 if (servname == NULL && nodename == NULL)
385 && hints->ai_family != PF_UNSPEC
386 && hints->ai_family != PF_INET
388 && hints->ai_family != PF_INET6
393 if (servname != NULL) {
394 ret = get_port_protocol_socktype (servname, hints,
395 &port, &protocol, &socktype);
399 if (nodename != NULL) {
400 ret = get_number (nodename, hints, port, protocol, socktype, res);
402 if(hints && hints->ai_flags & AI_NUMERICHOST)
405 ret = get_nodes (nodename, hints, port, protocol, socktype,
409 ret = get_null (hints, port, protocol, socktype, res);