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, socktype = 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;
27 socktype = hint->ai_socktype;
29 const int mask = AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST |
30 AI_V4MAPPED | AI_ALL | AI_ADDRCONFIG | AI_NUMERICSERV;
31 if ((flags & mask) != flags)
44 nservs = __lookup_serv(ports, serv, proto, socktype, flags);
45 if (nservs < 0) return nservs;
47 naddrs = __lookup_name(addrs, canon, host, family, flags);
48 if (naddrs < 0) return naddrs;
50 nais = nservs * naddrs;
51 canon_len = strlen(canon);
52 out = calloc(1, nais * sizeof(*out) + canon_len + 1);
53 if (!out) return EAI_MEMORY;
56 outcanon = (void *)&out[nais];
57 memcpy(outcanon, canon, canon_len+1);
62 for (k=i=0; i<naddrs; i++) for (j=0; j<nservs; j++, k++) {
63 out[k].ai = (struct addrinfo){
64 .ai_family = addrs[i].family,
65 .ai_socktype = ports[j].socktype,
66 .ai_protocol = ports[j].proto,
67 .ai_addrlen = addrs[i].family == AF_INET
68 ? sizeof(struct sockaddr_in)
69 : sizeof(struct sockaddr_in6),
70 .ai_addr = (void *)&out[k].sa,
71 .ai_canonname = outcanon,
72 .ai_next = &out[k+1].ai };
73 switch (addrs[i].family) {
75 out[k].sa.sin.sin_family = AF_INET;
76 out[k].sa.sin.sin_port = htons(ports[j].port);
77 memcpy(&out[k].sa.sin.sin_addr, &addrs[i].addr, 4);
80 out[k].sa.sin6.sin6_family = AF_INET6;
81 out[k].sa.sin6.sin6_port = htons(ports[j].port);
82 out[k].sa.sin6.sin6_scope_id = addrs[i].scopeid;
83 memcpy(&out[k].sa.sin6.sin6_addr, &addrs[i].addr, 16);
87 out[nais-1].ai.ai_next = 0;