8  * @defgroup addr Network Address
20  * #include <netlink/addr.h>
30 #include <netlink/addr.h>
38 static inline uint16_t dn_ntohs(uint16_t addr)  in dn_ntohs()  argument
44 		.word = addr,  in dn_ntohs()
50 static inline int do_digit(char *str, uint16_t *addr, uint16_t scale,  in do_digit()  argument
53 	uint16_t tmp = *addr / scale;  in do_digit()
62 		*addr -= (tmp * scale);  in do_digit()
71 	uint16_t addr = dn_ntohs(*(uint16_t *)addrbuf);  in dnet_ntop()  local
72 	uint16_t area = addr >> 10;  in dnet_ntop()
79 	addr &= 0x03ff;  in dnet_ntop()
97 	if (do_digit(str + pos, &addr, 1000, &pos, len, &started))  in dnet_ntop()
100 	if (do_digit(str + pos, &addr, 100, &pos, len, &started))  in dnet_ntop()
103 	if (do_digit(str + pos, &addr, 10, &pos, len, &started))  in dnet_ntop()
106 	if (do_digit(str + pos, &addr, 1, &pos, len, &started))  in dnet_ntop()
156 static void addr_destroy(struct nl_addr *addr)  in addr_destroy()  argument
158 	if (!addr)  in addr_destroy()
161 	if (addr->a_refcnt != 1)  in addr_destroy()
164 	free(addr);  in addr_destroy()
187 	struct nl_addr *addr;  in nl_addr_alloc()  local
189 	addr = calloc(1, sizeof(*addr) + maxsize);  in nl_addr_alloc()
190 	if (!addr)  in nl_addr_alloc()
193 	addr->a_refcnt = 1;  in nl_addr_alloc()
194 	addr->a_maxsize = maxsize;  in nl_addr_alloc()
196 	return addr;  in nl_addr_alloc()
218 	struct nl_addr *addr;  in nl_addr_build()  local
220 	addr = nl_addr_alloc(size);  in nl_addr_build()
221 	if (!addr)  in nl_addr_build()
224 	addr->a_family = family;  in nl_addr_build()
225 	addr->a_len = size;  in nl_addr_build()
228 		addr->a_prefixlen = 20;  /* MPLS address is a 20-bit label */  in nl_addr_build()
231 		addr->a_prefixlen = size*8;  in nl_addr_build()
235 		memcpy(addr->a_addr, buf, size);  in nl_addr_build()
237 	return addr;  in nl_addr_build()
301 	struct nl_addr *addr = NULL; /* gcc ain't that smart */  in nl_addr_parse()  local
448 	addr = nl_addr_alloc(len);  in nl_addr_parse()
449 	if (!addr) {  in nl_addr_parse()
454 	nl_addr_set_family(addr, family);  in nl_addr_parse()
457 		nl_addr_set_binary_addr(addr, buf, len);  in nl_addr_parse()
459 		addr->a_len = len;  in nl_addr_parse()
465 			addr_destroy(addr);  in nl_addr_parse()
469 		nl_addr_set_prefixlen(addr, pl);  in nl_addr_parse()
473 		nl_addr_set_prefixlen(addr, plen);  in nl_addr_parse()
475 	*result = addr;  in nl_addr_parse()
485  * @arg addr		Abstract address object
495 struct nl_addr *nl_addr_clone(const struct nl_addr *addr)  in nl_addr_clone()  argument
499 	new = nl_addr_build(addr->a_family, addr->a_addr, addr->a_len);  in nl_addr_clone()
501 		new->a_prefixlen = addr->a_prefixlen;  in nl_addr_clone()
515  * @arg addr		Abstract address
525 struct nl_addr *nl_addr_get(struct nl_addr *addr)  in nl_addr_get()  argument
527 	addr->a_refcnt++;  in nl_addr_get()
529 	return addr;  in nl_addr_get()
534  * @arg addr		Abstract addr
541 void nl_addr_put(struct nl_addr *addr)  in nl_addr_put()  argument
543 	if (!addr)  in nl_addr_put()
546 	if (addr->a_refcnt == 1)  in nl_addr_put()
547 		addr_destroy(addr);  in nl_addr_put()
549 		addr->a_refcnt--;  in nl_addr_put()
554  * @arg addr		Abstract address object.
558 int nl_addr_shared(const struct nl_addr *addr)  in nl_addr_shared()  argument
560 	return addr->a_refcnt > 1;  in nl_addr_shared()
648  * @arg addr		Abstract address
652 int nl_addr_iszero(const struct nl_addr *addr)  in nl_addr_iszero()  argument
656 	for (i = 0; i < addr->a_len; i++)  in nl_addr_iszero()
657 		if (addr->a_addr[i])  in nl_addr_iszero()
665  * @arg addr		Address represented as character string.
671 int nl_addr_valid(const char *addr, int family)  in nl_addr_valid()  argument
679 		ret = inet_pton(family, addr, buf);  in nl_addr_valid()
685 		ret = mpls_pton(family, addr, buf, sizeof(buf));  in nl_addr_valid()
691 		ret = dnet_pton(addr, buf);  in nl_addr_valid()
697 		if (sscanf(addr, "%*02x:%*02x:%*02x:%*02x:%*02x:%*02x") != 6)  in nl_addr_valid()
707  * @arg addr		Abstract address object.
711 int nl_addr_guess_family(const struct nl_addr *addr)  in nl_addr_guess_family()  argument
713 	switch (addr->a_len) {  in nl_addr_guess_family()
727  * @arg addr		Abstract address object.
738 int nl_addr_fill_sockaddr(const struct nl_addr *addr, struct sockaddr *sa,  in nl_addr_fill_sockaddr()  argument
741 	switch (addr->a_family) {  in nl_addr_fill_sockaddr()
748 		if (addr->a_len == 4)  in nl_addr_fill_sockaddr()
749 			memcpy(&sai->sin_addr, addr->a_addr, 4);  in nl_addr_fill_sockaddr()
750 		else if (addr->a_len != 0)  in nl_addr_fill_sockaddr()
755 		sai->sin_family = addr->a_family;  in nl_addr_fill_sockaddr()
766 		if (addr->a_len == 16)  in nl_addr_fill_sockaddr()
767 			memcpy(&sa6->sin6_addr, addr->a_addr, 16);  in nl_addr_fill_sockaddr()
768 		else if (addr->a_len != 0)  in nl_addr_fill_sockaddr()
773 		sa6->sin6_family = addr->a_family;  in nl_addr_fill_sockaddr()
795  * @arg addr		Abstract address object.
806 int nl_addr_info(const struct nl_addr *addr, struct addrinfo **result)  in nl_addr_info()  argument
812 		.ai_family = addr->a_family,  in nl_addr_info()
815 	nl_addr2str(addr, buf, sizeof(buf));  in nl_addr_info()
839  * @arg addr		Abstract address object.
850 int nl_addr_resolve(const struct nl_addr *addr, char *host, size_t hostlen)  in nl_addr_resolve()  argument
856 	err = nl_addr_fill_sockaddr(addr, (struct sockaddr *) &buf, &salen);  in nl_addr_resolve()
877  * @arg addr		Abstract address object
882 void nl_addr_set_family(struct nl_addr *addr, int family)  in nl_addr_set_family()  argument
884 	addr->a_family = family;  in nl_addr_set_family()
889  * @arg addr		Abstract address object
895 int nl_addr_get_family(const struct nl_addr *addr)  in nl_addr_get_family()  argument
897 	return addr->a_family;  in nl_addr_get_family()
902  * @arg addr		Abstract address object.
920 int nl_addr_set_binary_addr(struct nl_addr *addr, const void *buf, size_t len)  in nl_addr_set_binary_addr()  argument
922 	if (len > addr->a_maxsize)  in nl_addr_set_binary_addr()
925 	addr->a_len = len;  in nl_addr_set_binary_addr()
926 	memset(addr->a_addr, 0, addr->a_maxsize);  in nl_addr_set_binary_addr()
929 		memcpy(addr->a_addr, buf, len);  in nl_addr_set_binary_addr()
936  * @arg addr		Abstract address object.
943 void *nl_addr_get_binary_addr(const struct nl_addr *addr)  in nl_addr_get_binary_addr()  argument
945 	return (void*)addr->a_addr;  in nl_addr_get_binary_addr()
950  * @arg addr		Abstract address object.
955 unsigned int nl_addr_get_len(const struct nl_addr *addr)  in nl_addr_get_len()  argument
957 	return addr->a_len;  in nl_addr_get_len()
962  * @arg addr		Abstract address object
967 void nl_addr_set_prefixlen(struct nl_addr *addr, int prefixlen)  in nl_addr_set_prefixlen()  argument
969 	addr->a_prefixlen = prefixlen;  in nl_addr_set_prefixlen()
974  * @arg addr		Abstract address object
978 unsigned int nl_addr_get_prefixlen(const struct nl_addr *addr)  in nl_addr_get_prefixlen()  argument
980 	return addr->a_prefixlen;  in nl_addr_get_prefixlen()
992  * @arg addr		Abstract address object.
1001 char *nl_addr2str(const struct nl_addr *addr, char *buf, size_t size)  in nl_addr2str()  argument
1006 	if (!addr || !addr->a_len) {  in nl_addr2str()
1008 		if (addr)  in nl_addr2str()
1014 	switch (addr->a_family) {  in nl_addr2str()
1016 			inet_ntop(AF_INET, addr->a_addr, buf, size);  in nl_addr2str()
1020 			inet_ntop(AF_INET6, addr->a_addr, buf, size);  in nl_addr2str()
1024 			mpls_ntop(AF_MPLS, addr->a_addr, buf, size);  in nl_addr2str()
1028 			dnet_ntop(addr->a_addr, addr->a_len, buf, size);  in nl_addr2str()
1034 				 (unsigned char) addr->a_addr[0]);  in nl_addr2str()
1035 			for (i = 1; i < addr->a_len; i++) {  in nl_addr2str()
1037 					 (unsigned char) addr->a_addr[i]);  in nl_addr2str()
1044 	if (addr->a_family != AF_MPLS &&  in nl_addr2str()
1045 	    (unsigned)addr->a_prefixlen != (8u * ((size_t)addr->a_len))) {  in nl_addr2str()
1046 		snprintf(tmp, sizeof(tmp), "/%d", addr->a_prefixlen);  in nl_addr2str()