Revert "Add function to guess AF_UNSPEC address"
This reverts commit a4063efa7deb6632c228037c47effca22ad0f781.
Reason for revert: It is not possible to guess the IP address
family from uninitialized memory. This function simply glorifies
random noise into an IPv6 address. It makes no sense to have it.
Change-Id: Ifadd614604cf9d0c2ed1a405493c1c3fcb37ae23
diff --git a/include/osmocom/core/sockaddr_str.h b/include/osmocom/core/sockaddr_str.h
index a46ad59..f474fa0 100644
--- a/include/osmocom/core/sockaddr_str.h
+++ b/include/osmocom/core/sockaddr_str.h
@@ -41,7 +41,6 @@
*/
int osmo_ip_str_type(const char *ip);
-unsigned osmo_sockaddr_guess_unspec(const struct sockaddr *src);
struct osmo_sockaddr_str {
/*! AF_INET for IPv4 address, or AF_INET6 for IPv6 address. */
diff --git a/src/sockaddr_str.c b/src/sockaddr_str.c
index 70927a7..9f1e897 100644
--- a/src/sockaddr_str.c
+++ b/src/sockaddr_str.c
@@ -184,38 +184,6 @@
return AF_UNSPEC;
}
-/*! Guess whether struct sockaddr with AF_UNSPEC family has valid IPv4 or IPv6 address.
- * The IPv6 is tried first to take into account "IPv4 mapped addresses".
- * \param[in] src Generic struct sockaddr pointer.
- * \return AF_INET or AF_INET6, AF_UNSPEC or original sa_family which are unsigned type according to <sys/socket.h>.
- */
-unsigned osmo_sockaddr_guess_unspec(const struct sockaddr *src)
-{
- int rc;
- struct osmo_sockaddr_str sa;
- struct osmo_sockaddr_str *tmp = &sa;
- const struct sockaddr_in6 *src6 = (const struct sockaddr_in6 *)src;
- const struct sockaddr_in *src4 = (const struct sockaddr_in *)src;
-
- if (!src)
- return AF_UNSPEC;
-
- if (src->sa_family != AF_UNSPEC)
- return src->sa_family;
-
- /* IPv6? */
- rc = osmo_sockaddr_str_from_in6_addr(tmp, &src6->sin6_addr, osmo_ntohs(src6->sin6_port));
- if (rc == 0 && osmo_ip_str_type(tmp->ip) == AF_INET6)
- return AF_INET6;
-
- /* IPv4? */
- rc = osmo_sockaddr_str_from_in_addr(tmp, &src4->sin_addr, osmo_ntohs(src4->sin_port));
- if (rc == 0 && osmo_ip_str_type(tmp->ip) == AF_INET)
- return AF_INET;
-
- return AF_UNSPEC;
-}
-
/*! Safely copy the given ip string to sockaddr_str, classify to AF_INET or AF_INET6.
* Data will be written to sockaddr_str even if an error is returned.
* \param[out] sockaddr_str The instance to copy to.
@@ -349,7 +317,7 @@
return -ENOSPC;
if (!src)
return -EINVAL;
- if (src->sin_family != AF_INET && osmo_sockaddr_guess_unspec((const struct sockaddr *)src) != AF_INET)
+ if (src->sin_family != AF_INET)
return -EINVAL;
return osmo_sockaddr_str_from_in_addr(sockaddr_str, &src->sin_addr, osmo_ntohs(src->sin_port));
}
@@ -365,7 +333,7 @@
return -ENOSPC;
if (!src)
return -EINVAL;
- if (src->sin6_family != AF_INET6 && osmo_sockaddr_guess_unspec((const struct sockaddr *)src) != AF_INET6)
+ if (src->sin6_family != AF_INET6)
return -EINVAL;
return osmo_sockaddr_str_from_in6_addr(sockaddr_str, &src->sin6_addr, osmo_ntohs(src->sin6_port));
}