diff options
Diffstat (limited to 'bsd-bindresvport.c')
-rw-r--r-- | bsd-bindresvport.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/bsd-bindresvport.c b/bsd-bindresvport.c new file mode 100644 index 000000000..3ea37ee52 --- /dev/null +++ b/bsd-bindresvport.c | |||
@@ -0,0 +1,116 @@ | |||
1 | /* | ||
2 | * Sun RPC is a product of Sun Microsystems, Inc. and is provided for | ||
3 | * unrestricted use provided that this legend is included on all tape | ||
4 | * media and as a part of the software program in whole or part. Users | ||
5 | * may copy or modify Sun RPC without charge, but are not authorized | ||
6 | * to license or distribute it to anyone else except as part of a product or | ||
7 | * program developed by the user. | ||
8 | * | ||
9 | * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE | ||
10 | * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR | ||
11 | * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. | ||
12 | * | ||
13 | * Sun RPC is provided with no support and without any obligation on the | ||
14 | * part of Sun Microsystems, Inc. to assist in its use, correction, | ||
15 | * modification or enhancement. | ||
16 | * | ||
17 | * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE | ||
18 | * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC | ||
19 | * OR ANY PART THEREOF. | ||
20 | * | ||
21 | * In no event will Sun Microsystems, Inc. be liable for any lost revenue | ||
22 | * or profits or other special, indirect and consequential damages, even if | ||
23 | * Sun has been advised of the possibility of such damages. | ||
24 | * | ||
25 | * Sun Microsystems, Inc. | ||
26 | * 2550 Garcia Avenue | ||
27 | * Mountain View, California 94043 | ||
28 | */ | ||
29 | |||
30 | #include "config.h" | ||
31 | |||
32 | #ifndef HAVE_BINRESVPORT_AF | ||
33 | |||
34 | #if defined(LIBC_SCCS) && !defined(lint) | ||
35 | static char *rcsid = "$OpenBSD: bindresvport.c,v 1.11 1999/12/17 19:22:08 deraadt Exp $"; | ||
36 | #endif /* LIBC_SCCS and not lint */ | ||
37 | |||
38 | /* | ||
39 | * Copyright (c) 1987 by Sun Microsystems, Inc. | ||
40 | * | ||
41 | * Portions Copyright(C) 1996, Jason Downs. All rights reserved. | ||
42 | */ | ||
43 | |||
44 | #include "includes.h" | ||
45 | |||
46 | #define STARTPORT 600 | ||
47 | #define ENDPORT (IPPORT_RESERVED - 1) | ||
48 | #define NPORTS (ENDPORT - STARTPORT + 1) | ||
49 | |||
50 | #if 0 | ||
51 | /* | ||
52 | * Bind a socket to a privileged IP port | ||
53 | */ | ||
54 | int | ||
55 | bindresvport(sd, sin) | ||
56 | int sd; | ||
57 | struct sockaddr_in *sin; | ||
58 | { | ||
59 | return bindresvport_af(sd, (struct sockaddr *)sin, AF_INET); | ||
60 | } | ||
61 | #endif | ||
62 | |||
63 | /* | ||
64 | * Bind a socket to a privileged IP port | ||
65 | */ | ||
66 | int | ||
67 | bindresvport_af(sd, sa, af) | ||
68 | int sd; | ||
69 | struct sockaddr *sa; | ||
70 | int af; | ||
71 | { | ||
72 | int error; | ||
73 | struct sockaddr_storage myaddr; | ||
74 | struct sockaddr_in *sin; | ||
75 | struct sockaddr_in6 *sin6; | ||
76 | u_int16_t *portp; | ||
77 | int salen; | ||
78 | int i; | ||
79 | |||
80 | if (sa == NULL) { | ||
81 | memset(&myaddr, 0, sizeof(myaddr)); | ||
82 | sa = (struct sockaddr *)&myaddr; | ||
83 | } | ||
84 | |||
85 | if (af == AF_INET) { | ||
86 | sin = (struct sockaddr_in *)sa; | ||
87 | salen = sizeof(struct sockaddr_in); | ||
88 | portp = &sin->sin_port; | ||
89 | } else if (af == AF_INET6) { | ||
90 | sin6 = (struct sockaddr_in6 *)sa; | ||
91 | salen = sizeof(struct sockaddr_in6); | ||
92 | portp = &sin6->sin6_port; | ||
93 | } else { | ||
94 | errno = EPFNOSUPPORT; | ||
95 | return (-1); | ||
96 | } | ||
97 | sa->sa_family = af; | ||
98 | |||
99 | if (*portp == 0) | ||
100 | *portp = (getpid() % NPORTS) + STARTPORT; | ||
101 | |||
102 | for(i = 0; i < NPORTS; i++) { | ||
103 | error = bind(sd, sa, salen); | ||
104 | |||
105 | if ((error == 0) || ((error < 0) && (errno != EADDRINUSE))) | ||
106 | break; | ||
107 | |||
108 | (*portp)++; | ||
109 | if (*portp < ENDPORT) | ||
110 | *portp = STARTPORT; | ||
111 | } | ||
112 | |||
113 | return (error); | ||
114 | } | ||
115 | |||
116 | #endif /* HAVE_BINRESVPORT_AF */ | ||