libbb: make set_nport accept pointer to sockaddr, not to len_and_sockaddr.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

include/libbb.h

@@ -589,7 +589,7 @@ len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t
 /* Assign sin[6]_port member if the socket is an AF_INET[6] one,
  * otherwise no-op. Useful for ftp.
  * NB: does NOT do htons() internally, just direct assignment. */
-void set_nport(len_and_sockaddr *lsa, unsigned port) FAST_FUNC;
+void set_nport(struct sockaddr *sa, unsigned port) FAST_FUNC;
 /* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */
 int get_nport(const struct sockaddr *sa) FAST_FUNC;
 /* Reverse DNS. Returns NULL on failure. */

libbb/xconnect.c

@@ -134,16 +134,18 @@ int FAST_FUNC get_nport(const struct sockaddr *sa)
 	return -1;
 }
 
-void FAST_FUNC set_nport(len_and_sockaddr *lsa, unsigned port)
+void FAST_FUNC set_nport(struct sockaddr *sa, unsigned port)
 {
 #if ENABLE_FEATURE_IPV6
-	if (lsa->u.sa.sa_family == AF_INET6) {
+	if (sa->sa_family == AF_INET6) {
-		lsa->u.sin6.sin6_port = port;
+		struct sockaddr_in6 *sin6 = (void*) sa;
+		sin6->sin6_port = port;
 		return;
 	}
 #endif
-	if (lsa->u.sa.sa_family == AF_INET) {
+	if (sa->sa_family == AF_INET) {
-		lsa->u.sin.sin_port = port;
+		struct sockaddr_in *sin = (void*) sa;
+		sin->sin_port = port;
 		return;
 	}
 	/* What? UNIX socket? IPX?? :) */
@@ -283,7 +285,7 @@ IF_NOT_FEATURE_IPV6(sa_family_t af = AF_INET;)
 	memcpy(&r->u.sa, used_res->ai_addr, used_res->ai_addrlen);
 
  set_port:
-	set_nport(r, htons(port));
+	set_nport(&r->u.sa, htons(port));
  ret:
 	if (result)
 		freeaddrinfo(result);
@@ -369,7 +371,7 @@ static int create_and_bind_or_die(const char *bindaddr, int port, int sock_type)
 		fd = xsocket(lsa->u.sa.sa_family, sock_type, 0);
 	} else {
 		fd = xsocket_type(&lsa, IF_FEATURE_IPV6(AF_UNSPEC,) sock_type);
-		set_nport(lsa, htons(port));
+		set_nport(&lsa->u.sa, htons(port));
 	}
 	setsockopt_reuseaddr(fd);
 	xbind(fd, &lsa->u.sa, lsa->len);

networking/ftpd.c

@@ -433,7 +433,7 @@ bind_for_passive_mode(void)
 	G.pasv_listen_fd = fd = xsocket(G.local_addr->u.sa.sa_family, SOCK_STREAM, 0);
 	setsockopt_reuseaddr(fd);
 
-	set_nport(G.local_addr, 0);
+	set_nport(&G.local_addr->u.sa, 0);
 	xbind(fd, &G.local_addr->u.sa, G.local_addr->len);
 	xlisten(fd, 1);
 	getsockname(fd, &G.local_addr->u.sa, &G.local_addr->len);
@@ -542,7 +542,7 @@ handle_port(void)
 	G.port_addr = xdotted2sockaddr(raw, port);
 #else
 	G.port_addr = get_peer_lsa(STDIN_FILENO);
-	set_nport(G.port_addr, htons(port));
+	set_nport(&G.port_addr->u.sa, htons(port));
 #endif
 	WRITE_OK(FTP_PORTOK);
 }

networking/ftpgetput.c

@@ -151,7 +151,7 @@ TODO2: need to stop ignoring IP address in PASV response.
 	*buf_ptr = '\0';
 	port_num += xatoul_range(buf_ptr + 1, 0, 255) * 256;
 
-	set_nport(lsa, htons(port_num));
+	set_nport(&lsa->u.sa, htons(port_num));
 	return xconnect_stream(lsa);
 }
 

networking/inetd.c

@@ -501,7 +501,7 @@ static void prepare_socket_fd(servtab_t *sep)
 
 		/* zero out the port for all RPC services; let bind()
 		 * find one. */
-		set_nport(sep->se_lsa, 0);
+		set_nport(&sep->se_lsa->u.sa, 0);
 
 		/* for RPC services, attempt to use a reserved port
 		 * if they are going to be running as root. */
@@ -959,7 +959,7 @@ static void reread_config_file(int sig UNUSED_PARAM)
 			}
 			if (LONE_CHAR(sep->se_local_hostname, '*')) {
 				lsa = xzalloc_lsa(sep->se_family);
-				set_nport(lsa, port);
+				set_nport(&lsa->u.sa, port);
 			} else {
 				lsa = host_and_af2sockaddr(sep->se_local_hostname,
 						ntohs(port), sep->se_family);

networking/nc_bloaty.c

@@ -386,10 +386,10 @@ create new one, and bind() it. TODO */
 				if (port == 0) {
 					/* "nc -nl -p LPORT RHOST" (w/o RPORT!):
 					 * we should accept any remote port */
-					set_nport(&remend, 0); /* blot out remote port# */
+					set_nport(&remend.u.sa, 0); /* blot out remote port# */
 				}
 				r = memcmp(&remend.u.sa, &themaddr->u.sa, remend.len);
-				set_nport(&remend, sv_port); /* restore */
+				set_nport(&remend.u.sa, sv_port); /* restore */
 				if (r != 0) {
 					/* nc 1.10 bails out instead, and its error message
 					 * is not suppressed by o_verbose */
@@ -486,7 +486,7 @@ static int udptest(void)
 	 us to hang forever, and hit it */
 		o_wait = 5;                     /* enough that we'll notice?? */
 		rr = xsocket(ouraddr->u.sa.sa_family, SOCK_STREAM, 0);
-		set_nport(themaddr, htons(SLEAZE_PORT));
+		set_nport(&themaddr->u.sa, htons(SLEAZE_PORT));
 		connect_w_timeout(rr);
 		/* don't need to restore themaddr's port, it's not used anymore */
 		close(rr);
@@ -813,7 +813,7 @@ int nc_main(int argc UNUSED_PARAM, char **argv)
 				(themaddr ? themaddr->u.sa.sa_family : AF_UNSPEC),
 				x);
 		if (o_lport)
-			set_nport(ouraddr, htons(o_lport));
+			set_nport(&ouraddr->u.sa, htons(o_lport));
 	}
 	xmove_fd(x, netfd);
 	setsockopt_reuseaddr(netfd);

networking/pscan.c

@@ -76,7 +76,7 @@ int pscan_main(int argc UNUSED_PARAM, char **argv)
 		DMSG("rtt %u", rtt_4);
 
 		/* The SOCK_STREAM socket type is implemented on the TCP/IP protocol. */
-		set_nport(lsap, htons(port));
+		set_nport(&lsap->u.sa, htons(port));
 		s = xsocket(lsap->u.sa.sa_family, SOCK_STREAM, 0);
 		/* We need unblocking socket so we don't need to wait for ETIMEOUT. */
 		/* Nonblocking connect typically "fails" with errno == EINPROGRESS */

networking/tcpudp.c

@@ -387,7 +387,7 @@ int tcpudpsvd_main(int argc UNUSED_PARAM, char **argv)
 		 * already bound in parent! This seems to work in Linux.
 		 * (otherwise we can move socket to fd #0 only if bind succeeds) */
 		close(0);
-		set_nport(localp, htons(local_port));
+		set_nport(&localp->u.sa, htons(local_port));
 		xmove_fd(xsocket(localp->u.sa.sa_family, SOCK_DGRAM, 0), 0);
 		setsockopt_reuseaddr(0); /* crucial */
 		xbind(0, &localp->u.sa, localp->len);

networking/traceroute.c

@@ -482,7 +482,7 @@ send_probe(int seq, int ttl)
 		if (!(option_mask32 & OPT_USE_ICMP)) {
 			out = outdata;
 			len -= sizeof(*outudp);
-			set_nport(dest_lsa, htons(port + seq));
+			set_nport(&dest_lsa->u.sa, htons(port + seq));
 		}
 	}
 
@@ -1018,10 +1018,10 @@ common_traceroute_main(int op, char **argv)
 		int probe_fd = xsocket(af, SOCK_DGRAM, 0);
 		if (op & OPT_DEVICE)
 			setsockopt_bindtodevice(probe_fd, device);
-		set_nport(dest_lsa, htons(1025));
+		set_nport(&dest_lsa->u.sa, htons(1025));
 		/* dummy connect. makes kernel pick source IP (and port) */
 		xconnect(probe_fd, &dest_lsa->u.sa, dest_lsa->len);
-		set_nport(dest_lsa, htons(port));
+		set_nport(&dest_lsa->u.sa, htons(port));
 
 		/* read IP and port */
 		source_lsa = get_sock_lsa(probe_fd);
@@ -1031,7 +1031,7 @@ common_traceroute_main(int op, char **argv)
 		close(probe_fd);
 
 		/* bind our sockets to this IP (but not port) */
-		set_nport(source_lsa, 0);
+		set_nport(&source_lsa->u.sa, 0);
 		xbind(sndsock, &source_lsa->u.sa, source_lsa->len);
 		xbind(rcvsock, &source_lsa->u.sa, source_lsa->len);
 

networking/wget.c

@@ -407,7 +407,7 @@ static FILE* prepare_ftp_session(FILE **dfpp, struct host_info *target, len_and_
 	str = strrchr(G.wget_buf, ',');
 	if (!str) goto pasv_error;
 	port += xatou_range(str+1, 0, 255) * 256;
-	set_nport(lsa, htons(port));
+	set_nport(&lsa->u.sa, htons(port));
 
 	*dfpp = open_socket(lsa);