aboutgitcodebugslistschat
path: root/inany.h
diff options
context:
space:
mode:
Diffstat (limited to 'inany.h')
-rw-r--r--inany.h33
1 files changed, 21 insertions, 12 deletions
diff --git a/inany.h b/inany.h
index 84e82b0..407690e 100644
--- a/inany.h
+++ b/inany.h
@@ -9,6 +9,8 @@
#ifndef INANY_H
#define INANY_H
+struct siphash_state;
+
/** union inany_addr - Represents either an IPv4 or IPv6 address
* @a6: Address as an IPv6 address, may be IPv4-mapped
* @v4mapped.zero: All zero-bits for an IPv4 address
@@ -41,6 +43,19 @@ extern const union inany_addr inany_any4;
#define in4addr_loopback (inany_loopback4.v4mapped.a4)
#define in4addr_any (inany_any4.v4mapped.a4)
+/** union sockaddr_inany - Either a sockaddr_in or a sockaddr_in6
+ * @sa_family: Address family, AF_INET or AF_INET6
+ * @sa: Plain struct sockaddr (useful to avoid casts)
+ * @sa4: IPv4 socket address, valid if sa_family == AF_INET
+ * @sa6: IPv6 socket address, valid if sa_family == AF_INET6
+ */
+union sockaddr_inany {
+ sa_family_t sa_family;
+ struct sockaddr sa;
+ struct sockaddr_in sa4;
+ struct sockaddr_in6 sa6;
+};
+
/** inany_v4 - Extract IPv4 address, if present, from IPv[46] address
* @addr: IPv4 or IPv6 address
*
@@ -137,23 +152,17 @@ static inline void inany_from_af(union inany_addr *aa,
/** inany_from_sockaddr - Extract IPv[46] address and port number from sockaddr
* @aa: Pointer to store IPv[46] address
* @port: Pointer to store port number, host order
- * @addr: struct sockaddr_in (IPv4) or struct sockaddr_in6 (IPv6)
+ * @addr: AF_INET or AF_INET6 socket address
*/
static inline void inany_from_sockaddr(union inany_addr *aa, in_port_t *port,
- const void *addr)
+ const union sockaddr_inany *sa)
{
- const struct sockaddr *sa = (const struct sockaddr *)addr;
-
if (sa->sa_family == AF_INET6) {
- struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa;
-
- inany_from_af(aa, AF_INET6, &sa6->sin6_addr);
- *port = ntohs(sa6->sin6_port);
+ inany_from_af(aa, AF_INET6, &sa->sa6.sin6_addr);
+ *port = ntohs(sa->sa6.sin6_port);
} else if (sa->sa_family == AF_INET) {
- struct sockaddr_in *sa4 = (struct sockaddr_in *)sa;
-
- inany_from_af(aa, AF_INET, &sa4->sin_addr);
- *port = ntohs(sa4->sin_port);
+ inany_from_af(aa, AF_INET, &sa->sa4.sin_addr);
+ *port = ntohs(sa->sa4.sin_port);
} else {
/* Not valid to call with other address families */
ASSERT(0);