2 * Functions for AF_ agnostic ipv4/ipv6 handling.
4 * (c) 2008 Florian Westphal <fw@strlen.de>, public domain.
13 #ifdef HAVE_GETADDRINFO
15 #include <sys/types.h>
17 #include <sys/socket.h>
19 #include <netinet/in.h>
21 #include "ng_ipaddr.h"
24 ng_ipaddr_init(ng_ipaddr_t *addr, const char *ip_str, UINT16 port)
26 #ifdef HAVE_GETADDRINFO
29 struct addrinfo *res0;
30 struct addrinfo hints = {
31 #ifndef WANT_IPV6 /* only accept v4 addresses */
34 .ai_flags = AI_NUMERICHOST
38 hints.ai_flags |= AI_PASSIVE;
40 /* silly, but ngircd stores UINT16 in server config, not string */
41 snprintf(portstr, sizeof(portstr), "%u", (unsigned int) port);
42 ret = getaddrinfo(ip_str, portstr, &hints, &res0);
47 assert(sizeof(*addr) >= res0->ai_addrlen);
48 if (sizeof(*addr) >= res0->ai_addrlen)
49 memcpy(addr, res0->ai_addr, res0->ai_addrlen);
54 #else /* HAVE_GETADDRINFO */
57 addr->sin4.sin_family = AF_INET;
58 # ifdef HAVE_INET_ATON
59 if (inet_aton(ip_str, &addr->sin4.sin_addr) == 0)
62 addr->sin4.sin_addr.s_addr = inet_addr(ip_str);
63 if (addr->sin4.sin_addr.s_addr == (unsigned) -1)
66 ng_ipaddr_setport(addr, port);
68 #endif /* HAVE_GETADDRINFO */
73 ng_ipaddr_setport(ng_ipaddr_t *a, UINT16 port)
82 assert(af == AF_INET || af == AF_INET6);
86 a->sin4.sin_port = htons(port);
89 a->sin6.sin6_port = htons(port);
94 assert(a->sin4.sin_family == AF_INET);
95 a->sin4.sin_port = htons(port);
96 #endif /* WANT_IPV6 */
102 ng_ipaddr_ipequal(const ng_ipaddr_t *a, const ng_ipaddr_t *b)
107 if (a->sa.sa_family != b->sa.sa_family)
109 assert(ng_ipaddr_salen(a) == ng_ipaddr_salen(b));
110 switch (a->sa.sa_family) {
112 return IN6_ARE_ADDR_EQUAL(&a->sin6.sin6_addr, &b->sin6.sin6_addr);
114 return memcmp(&a->sin4.sin_addr, &b->sin4.sin_addr, sizeof(a->sin4.sin_addr)) == 0;
118 assert(a->sin4.sin_family == AF_INET);
119 assert(b->sin4.sin_family == AF_INET);
120 return memcmp(&a->sin4.sin_addr, &b->sin4.sin_addr, sizeof(a->sin4.sin_addr)) == 0;
127 ng_ipaddr_tostr(const ng_ipaddr_t *addr)
129 static char strbuf[NG_INET_ADDRSTRLEN];
133 ng_ipaddr_tostr_r(addr, strbuf);
138 /* str must be at least NG_INET_ADDRSTRLEN bytes long */
140 ng_ipaddr_tostr_r(const ng_ipaddr_t *addr, char *str)
142 #ifdef HAVE_GETNAMEINFO
143 const struct sockaddr *sa = (const struct sockaddr *) addr;
148 ret = getnameinfo(sa, ng_ipaddr_salen(addr),
149 str, NG_INET_ADDRSTRLEN, NULL, 0, NI_NUMERICHOST);
152 * causes mis-interpretation of client host in e.g. /WHOIS
155 char tmp[NG_INET_ADDRSTRLEN] = "0";
156 ret = getnameinfo(sa, ng_ipaddr_salen(addr),
157 tmp+1, sizeof(tmp) -1, NULL, 0, NI_NUMERICHOST);
159 strlcpy(str, tmp, NG_INET_ADDRSTRLEN);
164 abort(); /* WANT_IPV6 depends on HAVE_GETNAMEINFO */
168 #endif /* WANT_IPV6 */