1 /*
2 * Copyright (c) 2000-2001 Boris Popov
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
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 AUTHOR 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 AUTHOR 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 * Selected code from smb_conn.c
33 */
34
35 /*
36 * Helper functions for smb_trantcp.c
37 * (and maybe future transports)
38 */
39
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/kmem.h>
43 #include <sys/cmn_err.h>
44
45 #include <netinet/in.h>
46 #include <netinet/tcp.h>
47
48 #include <netsmb/smb_osdep.h>
49 #include <netsmb/netbios.h>
50
51 #include <netsmb/smb.h>
52 #include <netsmb/smb_conn.h>
53 #include <netsmb/smb_subr.h>
54 #include <netsmb/smb_tran.h>
55
56 /*
57 * Return the length of a sockaddr structure.
58 * Only needs to handle the address formats
59 * used by smb_dup_sockaddr.
60 */
61 static size_t
SA_LEN(struct sockaddr * sa)62 SA_LEN(struct sockaddr *sa)
63 {
64 size_t len;
65
66 switch (sa->sa_family) {
67 case AF_INET:
68 len = sizeof (struct sockaddr_in);
69 break;
70 case AF_INET6:
71 len = sizeof (struct sockaddr_in6);
72 break;
73 case AF_NETBIOS:
74 len = sizeof (struct sockaddr_nb);
75 break;
76 default:
77 SMBSDEBUG("invalid address family %d\n", sa->sa_family);
78 len = sizeof (struct sockaddr);
79 break;
80 }
81
82 return (len);
83 }
84
85 /*
86 * Compare two sockaddr contents
87 * Return zero if identical.
88 */
89 int
smb_cmp_sockaddr(struct sockaddr * a1,struct sockaddr * a2)90 smb_cmp_sockaddr(struct sockaddr *a1, struct sockaddr *a2)
91 {
92 size_t l1, l2;
93
94 l1 = SA_LEN(a1);
95 l2 = SA_LEN(a2);
96
97 if (l1 != l2)
98 return (-1);
99
100 return (bcmp(a1, a2, l1));
101 }
102
103 /*
104 * Copy a socket address of varying size.
105 */
106 struct sockaddr *
smb_dup_sockaddr(struct sockaddr * sa)107 smb_dup_sockaddr(struct sockaddr *sa)
108 {
109 struct sockaddr *sa2;
110 size_t len;
111
112 /* Get the length (varies per family) */
113 len = SA_LEN(sa);
114
115 sa2 = kmem_alloc(len, KM_SLEEP);
116 if (sa2)
117 bcopy(sa, sa2, len);
118
119 return (sa2);
120 }
121
122 void
smb_free_sockaddr(struct sockaddr * sa)123 smb_free_sockaddr(struct sockaddr *sa)
124 {
125 size_t len;
126
127 /* Get the length (varies per family) */
128 len = SA_LEN(sa);
129
130 kmem_free(sa, len);
131 }
132