socket: Introduce API osmo_sockaddr_is_any
Change-Id: I2810a889fc14052d0e0be6a2b500ad4e5088ffa9
diff --git a/TODO-RELEASE b/TODO-RELEASE
index 8ccfa49..436d417 100644
--- a/TODO-RELEASE
+++ b/TODO-RELEASE
@@ -7,3 +7,4 @@
# If any interfaces have been added since the last public release: c:r:a + 1.
# If any interfaces have been removed or changed since the last public release: c:r:0.
#library what description / commit summary line
+libosmocore new API osmo_sockaddr_is_any()
\ No newline at end of file
diff --git a/include/osmocom/core/socket.h b/include/osmocom/core/socket.h
index 79de6c5..06db5d0 100644
--- a/include/osmocom/core/socket.h
+++ b/include/osmocom/core/socket.h
@@ -31,6 +31,7 @@
};
int osmo_sockaddr_is_local(struct sockaddr *addr, unsigned int addrlen);
+int osmo_sockaddr_is_any(const struct osmo_sockaddr *addr);
unsigned int osmo_sockaddr_to_str_and_uint(char *addr, unsigned int addr_len, uint16_t *port,
const struct sockaddr *sa);
diff --git a/src/socket.c b/src/socket.c
index 4605db4..3d945e7 100644
--- a/src/socket.c
+++ b/src/socket.c
@@ -1175,6 +1175,26 @@
return 0;
}
+/*! Determine if the given address is an ANY address ("0.0.0.0", "::"). Port is not checked.
+ * \param[in] addr Socket Address
+ * \param[in] addrlen Length of socket address in bytes
+ * \returns 1 if address is ANY, 0 otherwise. -1 is address family not supported/detected.
+ */
+int osmo_sockaddr_is_any(const struct osmo_sockaddr *addr)
+{
+ switch (addr->u.sa.sa_family) {
+ case AF_INET6: {
+ struct in6_addr ip6_any = IN6ADDR_ANY_INIT;
+ return memcmp(&addr->u.sin6.sin6_addr,
+ &ip6_any, sizeof(ip6_any)) == 0;
+ }
+ case AF_INET:
+ return addr->u.sin.sin_addr.s_addr == INADDR_ANY;
+ default:
+ return -1;
+ }
+}
+
/*! Convert sockaddr_in to IP address as char string and port as uint16_t.
* \param[out] addr String buffer to write IP address to, or NULL.
* \param[out] addr_len Size of \a addr.