2 #include <sys/socket.h>
3 #include <netinet/in.h>
8 int getaddrinfo(const char *restrict host, const char *restrict serv, const struct addrinfo *restrict hint, struct addrinfo **restrict res)
10 struct service ports[MAXSERVS];
11 struct address addrs[MAXADDRS];
12 char canon[256], *outcanon;
13 int nservs, naddrs, nais, canon_len, i, j, k;
14 int family = AF_UNSPEC, flags = 0, proto = 0;
18 struct sockaddr_in sin;
19 struct sockaddr_in6 sin6;
24 family = hint->ai_family;
25 flags = hint->ai_flags;
26 proto = hint->ai_protocol;
28 const int mask = AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST |
29 AI_V4MAPPED | AI_ALL | AI_ADDRCONFIG | AI_NUMERICSERV;
30 if ((flags & mask) != flags)
42 switch (hint->ai_socktype) {
69 nservs = __lookup_serv(ports, serv, proto, flags);
70 if (nservs < 0) return nservs;
72 naddrs = __lookup_name(addrs, canon, host, family, flags);
73 if (naddrs < 0) return naddrs;
75 nais = nservs * naddrs;
76 canon_len = strlen(canon);
77 out = calloc(1, nais * sizeof(*out) + canon_len + 1);
78 if (!out) return EAI_MEMORY;
81 outcanon = (void *)&out[nais];
82 memcpy(outcanon, canon, canon_len+1);
87 for (k=i=0; i<naddrs; i++) for (j=0; j<nservs; j++, k++) {
88 out[k].ai = (struct addrinfo){
89 .ai_family = addrs[i].family,
90 .ai_socktype = ports[j].proto == IPPROTO_TCP
91 ? SOCK_STREAM : SOCK_DGRAM,
92 .ai_protocol = ports[j].proto,
93 .ai_addrlen = addrs[i].family == AF_INET
94 ? sizeof(struct sockaddr_in)
95 : sizeof(struct sockaddr_in6),
96 .ai_addr = (void *)&out[k].sa,
97 .ai_canonname = outcanon,
98 .ai_next = &out[k+1].ai };
99 switch (addrs[i].family) {
101 out[k].sa.sin.sin_family = AF_INET;
102 out[k].sa.sin.sin_port = htons(ports[j].port);
103 memcpy(&out[k].sa.sin.sin_addr, &addrs[i].addr, 4);
106 out[k].sa.sin6.sin6_family = AF_INET6;
107 out[k].sa.sin6.sin6_port = htons(ports[j].port);
108 memcpy(&out[k].sa.sin6.sin6_addr, &addrs[i].addr, 16);
112 out[nais-1].ai.ai_next = 0;