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)
51 return a->sa.sa_family;
53 assert(a->sin4.sin_family == 0 || a->sin4.sin_family == AF_INET);
54 return a->sin4.sin_family;
59 static inline socklen_t
60 ng_ipaddr_salen(const ng_ipaddr_t *a)
63 assert(a->sa.sa_family == AF_INET || a->sa.sa_family == AF_INET6);
64 if (a->sa.sa_family == AF_INET6)
65 return (socklen_t)sizeof(a->sin6);
67 assert(a->sin4.sin_family == AF_INET);
68 return (socklen_t)sizeof(a->sin4);
73 ng_ipaddr_getport(const ng_ipaddr_t *a)
76 int af = a->sa.sa_family;
78 assert(af == AF_INET || af == AF_INET6);
81 return ntohs(a->sin6.sin6_port);
82 #endif /* WANT_IPV6 */
83 assert(a->sin4.sin_family == AF_INET);
84 return ntohs(a->sin4.sin_port);
88 * init a ng_ipaddr_t object.
89 * @param addr: pointer to ng_ipaddr_t to initialize.
90 * @param ip_str: ip address in dotted-decimal (ipv4) or hexadecimal (ipv6) notation
91 * @param port: transport layer port number to use.
93 GLOBAL bool ng_ipaddr_init PARAMS((ng_ipaddr_t *addr, const char *ip_str, UINT16 port));
95 /* set sin4/sin6_port, depending on a->sa_family */
96 GLOBAL void ng_ipaddr_setport PARAMS((ng_ipaddr_t *a, UINT16 port));
98 /* return true if a and b have the same IP address. If a and b have different AF, return false. */
99 GLOBAL bool ng_ipaddr_ipequal PARAMS((const ng_ipaddr_t *a, const ng_ipaddr_t *b));
103 /* convert struct sockaddr to string, returns pointer to static buffer */
104 GLOBAL const char *ng_ipaddr_tostr PARAMS((const ng_ipaddr_t *addr));
106 /* convert struct sockaddr to string. dest must be NG_INET_ADDRSTRLEN bytes long */
107 GLOBAL bool ng_ipaddr_tostr_r PARAMS((const ng_ipaddr_t *addr, char *dest));
109 static inline const char*
110 ng_ipaddr_tostr(const ng_ipaddr_t *addr)
112 return inet_ntoa(addr->sin4.sin_addr);
116 ng_ipaddr_tostr_r(const ng_ipaddr_t *addr, char *d)
118 strlcpy(d, inet_ntoa(addr->sin4.sin_addr), NG_INET_ADDRSTRLEN);