/* * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights * Reserved. This file contains Original Code and/or Modifications of * Original Code as defined in and that are subject to the Apple Public * Source License Version 1.1 (the "License"). You may not use this file * except in compliance with the License. Please obtain a copy of the * License at http://www.apple.com/publicsource and read it before using * this file. * * The Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* * Sun RPC is a product of Sun Microsystems, Inc. and is provided for * unrestricted use provided that this legend is included on all tape * media and as a part of the software program in whole or part. Users * may copy or modify Sun RPC without charge, but are not authorized * to license or distribute it to anyone else except as part of a product or * program developed by the user. * * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. * * Sun RPC is provided with no support and without any obligation on the * part of Sun Microsystems, Inc. to assist in its use, correction, * modification or enhancement. * * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC * OR ANY PART THEREOF. * * In no event will Sun Microsystems, Inc. be liable for any lost revenue * or profits or other special, indirect and consequential damages, even if * Sun has been advised of the possibility of such damages. * * Sun Microsystems, Inc. * 2550 Garcia Avenue * Mountain View, California 94043 */ #if defined(LIBC_SCCS) && !defined(lint) /*static char *sccsid = "from: @(#)bindresvport.c 1.8 88/02/08 SMI";*/ /*static char *sccsid = "from: @(#)bindresvport.c 2.2 88/07/29 4.0 RPCSRC";*/ static char *rcsid = "$Id: bindresvport.c,v 1.2 1999/10/14 21:56:52 wsanchez Exp $"; #endif /* * Copyright (c) 1987 by Sun Microsystems, Inc. */ #include <sys/types.h> #include <sys/errno.h> #include <sys/socket.h> #include <netinet/in.h> /* * Bind a socket to a privileged IP port */ bindresvport(sd, sin) int sd; struct sockaddr_in *sin; { int res; static short port; struct sockaddr_in myaddr; extern int errno; int i; #define STARTPORT 600 #define ENDPORT (IPPORT_RESERVED - 1) #define NPORTS (ENDPORT - STARTPORT + 1) if (sin == (struct sockaddr_in *)0) { sin = &myaddr; bzero(sin, sizeof (*sin)); sin->sin_family = AF_INET; } else if (sin->sin_family != AF_INET) { errno = EPFNOSUPPORT; return (-1); } if (port == 0) { port = (getpid() % NPORTS) + STARTPORT; } res = -1; errno = EADDRINUSE; for (i = 0; i < NPORTS && res < 0 && errno == EADDRINUSE; i++) { sin->sin_port = htons(port++); if (port > ENDPORT) { port = STARTPORT; } res = bind(sd, (struct sockaddr *)sin, sizeof(struct sockaddr_in)); } return (res); }