2 * (c) 2008 Florian Westphal <fw@strlen.de>, public domain.
11 * Functions for AF_ agnostic ipv4/ipv6 handling (header).
15 #include <sys/socket.h>
16 #include <netinet/in.h>
18 #ifdef HAVE_ARPA_INET_H
19 # include <arpa/inet.h>
21 # define PF_INET AF_INET
26 #define NG_INET_ADDRSTRLEN INET6_ADDRSTRLEN
28 #define NG_INET_ADDRSTRLEN 16
35 struct sockaddr_in sin4;
36 struct sockaddr_in6 sin6;
39 /* assume compiler can't deal with typedef struct {... */
40 struct NG_IP_ADDR_DONTUSE {
41 struct sockaddr_in sin4;
43 typedef struct NG_IP_ADDR_DONTUSE ng_ipaddr_t;
48 ng_ipaddr_af(const ng_ipaddr_t *a)
52 return a->sa.sa_family;
54 assert(a->sin4.sin_family == 0 || a->sin4.sin_family == AF_INET);
55 return a->sin4.sin_family;
60 static inline socklen_t
61 ng_ipaddr_salen(const ng_ipaddr_t *a)
65 assert(a->sa.sa_family == AF_INET || a->sa.sa_family == AF_INET6);
66 if (a->sa.sa_family == AF_INET6)
67 return (socklen_t)sizeof(a->sin6);
69 assert(a->sin4.sin_family == AF_INET);
70 return (socklen_t)sizeof(a->sin4);
75 ng_ipaddr_getport(const ng_ipaddr_t *a)
78 int af = a->sa.sa_family;
81 assert(af == AF_INET || af == AF_INET6);
84 return ntohs(a->sin6.sin6_port);
85 #endif /* WANT_IPV6 */
88 assert(a->sin4.sin_family == AF_INET);
89 return ntohs(a->sin4.sin_port);
93 * init a ng_ipaddr_t object.
94 * @param addr: pointer to ng_ipaddr_t to initialize.
95 * @param ip_str: ip address in dotted-decimal (ipv4) or hexadecimal (ipv6) notation
96 * @param port: transport layer port number to use.
98 GLOBAL bool ng_ipaddr_init PARAMS((ng_ipaddr_t *addr, const char *ip_str, UINT16 port));
100 /* set sin4/sin6_port, depending on a->sa_family */
101 GLOBAL void ng_ipaddr_setport PARAMS((ng_ipaddr_t *a, UINT16 port));
103 /* return true if a and b have the same IP address. If a and b have different AF, return false. */
104 GLOBAL bool ng_ipaddr_ipequal PARAMS((const ng_ipaddr_t *a, const ng_ipaddr_t *b));
108 /* convert struct sockaddr to string, returns pointer to static buffer */
109 GLOBAL const char *ng_ipaddr_tostr PARAMS((const ng_ipaddr_t *addr));
111 /* convert struct sockaddr to string. dest must be NG_INET_ADDRSTRLEN bytes long */
112 GLOBAL bool ng_ipaddr_tostr_r PARAMS((const ng_ipaddr_t *addr, char *dest));
114 static inline const char*
115 ng_ipaddr_tostr(const ng_ipaddr_t *addr)
117 assert(addr != NULL);
118 return inet_ntoa(addr->sin4.sin_addr);
122 ng_ipaddr_tostr_r(const ng_ipaddr_t *addr, char *d)
124 assert(addr != NULL);
126 strlcpy(d, inet_ntoa(addr->sin4.sin_addr), NG_INET_ADDRSTRLEN);