2 * (c) 2008 Florian Westphal <fw@strlen.de>, public domain.
12 * Functions for AF_ agnostic ipv4/ipv6 handling (header).
16 #include <sys/socket.h>
17 #include <netinet/in.h>
19 #ifdef HAVE_ARPA_INET_H
20 # include <arpa/inet.h>
22 # define PF_INET AF_INET
27 #define NG_INET_ADDRSTRLEN INET6_ADDRSTRLEN
29 #define NG_INET_ADDRSTRLEN 16
36 struct sockaddr_in sin4;
37 struct sockaddr_in6 sin6;
40 /* assume compiler can't deal with typedef struct {... */
41 struct NG_IP_ADDR_DONTUSE {
42 struct sockaddr_in sin4;
44 typedef struct NG_IP_ADDR_DONTUSE ng_ipaddr_t;
49 ng_ipaddr_af(const ng_ipaddr_t *a)
53 return a->sa.sa_family;
55 assert(a->sin4.sin_family == 0 || a->sin4.sin_family == AF_INET);
56 return a->sin4.sin_family;
61 static inline socklen_t
62 ng_ipaddr_salen(const ng_ipaddr_t *a)
66 assert(a->sa.sa_family == AF_INET || a->sa.sa_family == AF_INET6);
67 if (a->sa.sa_family == AF_INET6)
68 return (socklen_t)sizeof(a->sin6);
70 assert(a->sin4.sin_family == AF_INET);
71 return (socklen_t)sizeof(a->sin4);
76 ng_ipaddr_getport(const ng_ipaddr_t *a)
79 int af = a->sa.sa_family;
82 assert(af == AF_INET || af == AF_INET6);
85 return ntohs(a->sin6.sin6_port);
86 #endif /* WANT_IPV6 */
89 assert(a->sin4.sin_family == AF_INET);
90 return ntohs(a->sin4.sin_port);
94 * init a ng_ipaddr_t object.
95 * @param addr: pointer to ng_ipaddr_t to initialize.
96 * @param ip_str: ip address in dotted-decimal (ipv4) or hexadecimal (ipv6) notation
97 * @param port: transport layer port number to use.
99 GLOBAL bool ng_ipaddr_init PARAMS((ng_ipaddr_t *addr, const char *ip_str, UINT16 port));
101 /* set sin4/sin6_port, depending on a->sa_family */
102 GLOBAL void ng_ipaddr_setport PARAMS((ng_ipaddr_t *a, UINT16 port));
104 /* return true if a and b have the same IP address. If a and b have different AF, return false. */
105 GLOBAL bool ng_ipaddr_ipequal PARAMS((const ng_ipaddr_t *a, const ng_ipaddr_t *b));
109 /* convert struct sockaddr to string, returns pointer to static buffer */
110 GLOBAL const char *ng_ipaddr_tostr PARAMS((const ng_ipaddr_t *addr));
112 /* convert struct sockaddr to string. dest must be NG_INET_ADDRSTRLEN bytes long */
113 GLOBAL bool ng_ipaddr_tostr_r PARAMS((const ng_ipaddr_t *addr, char *dest));
115 static inline const char*
116 ng_ipaddr_tostr(const ng_ipaddr_t *addr)
118 assert(addr != NULL);
119 return inet_ntoa(addr->sin4.sin_addr);
123 ng_ipaddr_tostr_r(const ng_ipaddr_t *addr, char *d)
125 assert(addr != NULL);
127 strlcpy(d, inet_ntoa(addr->sin4.sin_addr), NG_INET_ADDRSTRLEN);