Date: Tue, 7 Jan 2014 23:51:42 +0000 (UTC) From: Michael Tuexen <tuexen@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r260428 - stable/10/lib/libc/net Message-ID: <201401072351.s07NpgsD067350@svn.freebsd.org>
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Author: tuexen Date: Tue Jan 7 23:51:41 2014 New Revision: 260428 URL: http://svnweb.freebsd.org/changeset/base/260428 Log: MFC r260257: Fix several bugs in sctp_bindx(): * Set errno to EAFNOSUPPORT if an address is provided which is neither AF_INET nor AF_INET6. * Don't modify the arguments. * Don't smash the stack when provided with a non-zero port. * Handle the case correctly where the first address provided is an IPv6 address. Modified: stable/10/lib/libc/net/sctp_sys_calls.c Directory Properties: stable/10/ (props changed) Modified: stable/10/lib/libc/net/sctp_sys_calls.c ============================================================================== --- stable/10/lib/libc/net/sctp_sys_calls.c Tue Jan 7 23:50:15 2014 (r260427) +++ stable/10/lib/libc/net/sctp_sys_calls.c Tue Jan 7 23:51:41 2014 (r260428) @@ -233,19 +233,11 @@ sctp_bindx(int sd, struct sockaddr *addr break; default: /* Invalid address family specified. */ - errno = EINVAL; + errno = EAFNOSUPPORT; return (-1); } sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len); } - /* - * Now if there was a port mentioned, assure that the first address - * has that port to make sure it fails or succeeds correctly. - */ - if (sport) { - sin = (struct sockaddr_in *)sa; - sin->sin_port = sport; - } argsz = sizeof(struct sctp_getaddresses) + sizeof(struct sockaddr_storage); if ((gaddrs = (struct sctp_getaddresses *)malloc(argsz)) == NULL) { @@ -257,6 +249,23 @@ sctp_bindx(int sd, struct sockaddr *addr memset(gaddrs, 0, argsz); gaddrs->sget_assoc_id = 0; memcpy(gaddrs->addr, sa, sa->sa_len); + /* + * Now, if there was a port mentioned, assure that the first + * address has that port to make sure it fails or succeeds + * correctly. + */ + if ((i == 0) && (sport != 0)) { + switch (gaddrs->addr->sa_family) { + case AF_INET: + sin = (struct sockaddr_in *)gaddrs->addr; + sin->sin_port = sport; + break; + case AF_INET6: + sin6 = (struct sockaddr_in6 *)gaddrs->addr; + sin6->sin6_port = sport; + break; + } + } if (setsockopt(sd, IPPROTO_SCTP, flags, gaddrs, (socklen_t) argsz) != 0) { free(gaddrs);
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