| cdd66111 |
1 | /* OPENBSD ORIGINAL: lib/libc/net/rresvport.c */ |
| 2 | |
| 3c0ef626 |
3 | /* |
| 4 | * Copyright (c) 1995, 1996, 1998 Theo de Raadt. All rights reserved. |
| 5 | * Copyright (c) 1983, 1993, 1994 |
| 6 | * The Regents of the University of California. All rights reserved. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * 1. Redistributions of source code must retain the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer. |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 0fff78ff |
16 | * 3. Neither the name of the University nor the names of its contributors |
| 3c0ef626 |
17 | * may be used to endorse or promote products derived from this software |
| 18 | * without specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 30 | * SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 41b2f314 |
33 | #include "includes.h" |
| 3c0ef626 |
34 | |
| 35 | #ifndef HAVE_RRESVPORT_AF |
| 36 | |
| 37 | #if defined(LIBC_SCCS) && !defined(lint) |
| 0fff78ff |
38 | static char *rcsid = "$OpenBSD: rresvport.c,v 1.6 2003/06/03 02:11:35 deraadt Exp $"; |
| 3c0ef626 |
39 | #endif /* LIBC_SCCS and not lint */ |
| 40 | |
| 41 | #include "includes.h" |
| 42 | |
| 43 | #if 0 |
| 44 | int |
| 45 | rresvport(alport) |
| 46 | int *alport; |
| 47 | { |
| 48 | return rresvport_af(alport, AF_INET); |
| 49 | } |
| 50 | #endif |
| 51 | |
| 52 | int |
| 53 | rresvport_af(int *alport, sa_family_t af) |
| 54 | { |
| 55 | struct sockaddr_storage ss; |
| 56 | struct sockaddr *sa; |
| 57 | u_int16_t *portp; |
| 58 | int s; |
| 59 | socklen_t salen; |
| 60 | |
| 61 | memset(&ss, '\0', sizeof ss); |
| 62 | sa = (struct sockaddr *)&ss; |
| 63 | |
| 64 | switch (af) { |
| 65 | case AF_INET: |
| 66 | salen = sizeof(struct sockaddr_in); |
| 67 | portp = &((struct sockaddr_in *)sa)->sin_port; |
| 68 | break; |
| 69 | case AF_INET6: |
| 70 | salen = sizeof(struct sockaddr_in6); |
| 71 | portp = &((struct sockaddr_in6 *)sa)->sin6_port; |
| 72 | break; |
| 73 | default: |
| 74 | errno = EPFNOSUPPORT; |
| 75 | return (-1); |
| 76 | } |
| 77 | sa->sa_family = af; |
| 78 | |
| 79 | s = socket(af, SOCK_STREAM, 0); |
| 80 | if (s < 0) |
| 81 | return (-1); |
| 82 | |
| 83 | *portp = htons(*alport); |
| 84 | if (*alport < IPPORT_RESERVED - 1) { |
| 85 | if (bind(s, sa, salen) >= 0) |
| 86 | return (s); |
| 87 | if (errno != EADDRINUSE) { |
| 88 | (void)close(s); |
| 89 | return (-1); |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | *portp = 0; |
| 94 | sa->sa_family = af; |
| 95 | if (bindresvport_sa(s, sa) == -1) { |
| 96 | (void)close(s); |
| 97 | return (-1); |
| 98 | } |
| 99 | *alport = ntohs(*portp); |
| 100 | return (s); |
| 101 | } |
| 102 | |
| 103 | #endif /* HAVE_RRESVPORT_AF */ |
andersk / gssapi-openssh.git / blame