1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /*
28 * Find existing an VC given a list of addresses.
29 */
30
31 #include <errno.h>
32 #include <stdio.h>
33 #include <string.h>
34 #include <strings.h>
35 #include <stdlib.h>
36 #include <unistd.h>
37 #include <netdb.h>
38 #include <libintl.h>
39 #include <xti.h>
40 #include <assert.h>
41
42 #include <sys/types.h>
43 #include <sys/time.h>
44 #include <sys/byteorder.h>
45 #include <sys/socket.h>
46 #include <sys/fcntl.h>
47
48 #include <netinet/in.h>
49 #include <netinet/tcp.h>
50 #include <arpa/inet.h>
51
52 #include <netsmb/smb.h>
53 #include <netsmb/smb_lib.h>
54 #include <netsmb/netbios.h>
55 #include <netsmb/nb_lib.h>
56 #include <netsmb/smb_dev.h>
57
58 #include "charsets.h"
59 #include "private.h"
60
61 /*
62 * Ask the driver if it has a VC with this IP address.
63 */
64 static int
findvc(struct smb_ctx * ctx,struct addrinfo * ai)65 findvc(struct smb_ctx *ctx, struct addrinfo *ai)
66 {
67 smbioc_ossn_t *ssn = &ctx->ct_ssn;
68
69 /*
70 * Copy the passed address into ssn_srvaddr,
71 * but first sanity-check lengths. Also,
72 * zero it first to avoid trailing junk.
73 */
74 if (ai->ai_addrlen > sizeof (ssn->ssn_srvaddr))
75 return (EINVAL);
76 bzero(&ssn->ssn_srvaddr, sizeof (ssn->ssn_srvaddr));
77 bcopy(ai->ai_addr, &ssn->ssn_srvaddr, ai->ai_addrlen);
78
79 if (ioctl(ctx->ct_dev_fd, SMBIOC_SSN_FIND, ssn) == -1)
80 return (errno);
81
82 return (0);
83 }
84
85 /*
86 * Find (and reuse) an existing VC.
87 * See also: newvc.c
88 */
89 int
smb_ctx_findvc(struct smb_ctx * ctx)90 smb_ctx_findvc(struct smb_ctx *ctx)
91 {
92 struct addrinfo *ai;
93 int err;
94
95 /* Should already have the address list. */
96 if ((ctx->ct_flags & SMBCF_RESOLVED) == 0)
97 return (EINVAL);
98
99 for (ai = ctx->ct_addrinfo; ai; ai = ai->ai_next) {
100
101 switch (ai->ai_family) {
102
103 case AF_INET:
104 case AF_INET6:
105 case AF_NETBIOS:
106 err = findvc(ctx, ai);
107 break;
108
109 default:
110 DPRINT("skipped family %d", ai->ai_family);
111 err = EPROTONOSUPPORT;
112 break;
113 }
114
115 if (err == 0) {
116 /* re-use an existing VC */
117 ctx->ct_flags |= SMBCF_SSNACTIVE;
118 return (0);
119 }
120 }
121
122 return (ENOENT);
123 }
124
125 /*
126 * Forcibly disconnect the current session, even if
127 * there are others using it! This is used by the
128 * SMB server netlogon when it wants to setup a new
129 * logon session and does not want any re-use.
130 */
131 int
smb_ctx_kill(struct smb_ctx * ctx)132 smb_ctx_kill(struct smb_ctx *ctx)
133 {
134
135 if (ioctl(ctx->ct_dev_fd, SMBIOC_SSN_KILL, NULL) == -1)
136 return (errno);
137
138 return (0);
139 }
140