diff options
Diffstat (limited to 'security/openssh/files/bindresvport.c')
| -rw-r--r-- | security/openssh/files/bindresvport.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/security/openssh/files/bindresvport.c b/security/openssh/files/bindresvport.c new file mode 100644 index 000000000000..258e8547b388 --- /dev/null +++ b/security/openssh/files/bindresvport.c @@ -0,0 +1,151 @@ +/* + * 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";*/ +/*from: OpenBSD: bindresvport.c,v 1.7 1996/07/30 16:25:47 downsj Exp */ +static char *rcsid = "$FreeBSD: /tmp/pcvs/ports/security/openssh/files/Attic/bindresvport.c,v 1.1 2000-01-13 23:22:12 green Exp $"; +#endif + +/* + * Copyright (c) 1987 by Sun Microsystems, Inc. + * + * Portions Copyright(C) 1996, Jason Downs. All rights reserved. + */ + +#include <sys/types.h> +#include <sys/errno.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <unistd.h> +#include <string.h> + +#include "includes.h" + +/* + * Bind a socket to a privileged IP port + */ +int +bindresvport(sd, sin) + int sd; + struct sockaddr_in *sin; +{ + struct sockaddr_in myaddr; + int sinlen = sizeof(struct sockaddr_in); + + if (sin == (struct sockaddr_in *)0) { + sin = &myaddr; + memset(sin, 0, sinlen); + sin->sin_len = sinlen; + sin->sin_family = AF_INET; + } else if (sin->sin_family != AF_INET) { + errno = EPFNOSUPPORT; + return (-1); + } + + return (bindresvport2(sd, sin, sinlen)); +} + +int +bindresvport2(sd, sa, addrlen) + int sd; + struct sockaddr *sa; + socklen_t addrlen; +{ + int on, old, error, level, optname; + u_short port; + + if (sa == NULL) { + errno = EINVAL; + return (-1); + } + switch (sa->sa_family) { + case AF_INET: + port = ntohs(((struct sockaddr_in *)sa)->sin_port); + level = IPPROTO_IP; + optname = IP_PORTRANGE; + on = IP_PORTRANGE_LOW; + break; +#ifdef INET6 + case AF_INET6: + port = ntohs(((struct sockaddr_in6 *)sa)->sin6_port); + level = IPPROTO_IPV6; + optname = IPV6_PORTRANGE; + on = IPV6_PORTRANGE_LOW; + break; +#endif + default: + errno = EAFNOSUPPORT; + return (-1); + } + + if (port == 0) { + int oldlen = sizeof(old); + error = getsockopt(sd, level, optname, &old, &oldlen); + if (error < 0) + return(error); + + error = setsockopt(sd, level, optname, &on, sizeof(on)); + if (error < 0) + return(error); + } + + error = bind(sd, sa, addrlen); + + switch (sa->sa_family) { + case AF_INET: + port = ntohs(((struct sockaddr_in *)sa)->sin_port); + break; +#ifdef INET6 + case AF_INET6: + port = ntohs(((struct sockaddr_in6 *)sa)->sin6_port); + break; +#endif + default: /* shoud not match here */ + errno = EAFNOSUPPORT; + return (-1); + } + if (port == 0) { + int saved_errno = errno; + + if (error) { + if (setsockopt(sd, level, optname, + &old, sizeof(old)) < 0) + errno = saved_errno; + return (error); + } + + /* Hmm, what did the kernel assign... */ + if (getsockname(sd, (struct sockaddr *)sa, &addrlen) < 0) + errno = saved_errno; + return (error); + } + return (error); +} |