xref: /illumos-gate/usr/src/cmd/fs.d/smbclnt/fksmbcl/fknewvc.c (revision 8329232e00f1048795bae53acb230316243aadb5)
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  * Copyright 2017 Nexenta Systems, Inc.  All rights reserved.
27  */
28 
29 /*
30  * Create a new VC given a list of addresses.
31  */
32 
33 #include <errno.h>
34 #include <stdio.h>
35 #include <string.h>
36 #include <strings.h>
37 #include <stdlib.h>
38 #include <unistd.h>
39 #include <netdb.h>
40 #include <libintl.h>
41 #include <xti.h>
42 #include <assert.h>
43 
44 #include <sys/types.h>
45 #include <sys/time.h>
46 #include <sys/byteorder.h>
47 #include <sys/socket.h>
48 #include <sys/fcntl.h>
49 
50 #include <netinet/in.h>
51 #include <netinet/tcp.h>
52 #include <arpa/inet.h>
53 
54 #include <netsmb/smb.h>
55 #include <netsmb/smb_lib.h>
56 #include <netsmb/netbios.h>
57 #include <netsmb/nb_lib.h>
58 #include <netsmb/smb_dev.h>
59 
60 #include "smb/charsets.h"
61 #include "smb/private.h"
62 
63 /*
64  * Ask the IOD to create a VC with this IP address.
65  */
66 static int
fknewvc(struct smb_ctx * ctx,struct addrinfo * ai)67 fknewvc(struct smb_ctx *ctx, struct addrinfo *ai)
68 {
69 	char host[256];
70 	char svc[32];
71 	smbioc_ossn_t *ssn = &ctx->ct_ssn;
72 	int err;
73 
74 	if (smb_debug) {
75 		err = getnameinfo(ai->ai_addr, ai->ai_addrlen,
76 		    host, sizeof (host), svc, sizeof (svc),
77 		    AI_NUMERICHOST);
78 		if (err != 0) {
79 			strlcpy(host, "(?)", sizeof (host));
80 			strlcpy(svc, "?", sizeof (host));
81 		}
82 		printf("fknewvc: Try AF=%d %s:%s\n",
83 		    ai->ai_family, host, svc);
84 	}
85 
86 	/*
87 	 * Copy the passed address into ssn_srvaddr,
88 	 * but first sanity-check lengths.  Also,
89 	 * zero it first to avoid trailing junk.
90 	 */
91 	if (ai->ai_addrlen > sizeof (ssn->ssn_srvaddr))
92 		return (EINVAL);
93 	bzero(&ssn->ssn_srvaddr, sizeof (ssn->ssn_srvaddr));
94 	bcopy(ai->ai_addr, &ssn->ssn_srvaddr, ai->ai_addrlen);
95 
96 	/* Ask the IOD to connect using the info in ctx. */
97 	err = smb_iod_cl_newvc(ctx);
98 	if (smb_debug) {
99 		printf("fknewvc: iod_cl_newvc err=%d\n", err);
100 	}
101 
102 	return (err);
103 }
104 
105 /*
106  * Setup a new VC via the IOD.
107  * Similar to findvc.c
108  */
109 int
smb_ctx_newvc(struct smb_ctx * ctx)110 smb_ctx_newvc(struct smb_ctx *ctx)
111 {
112 	struct addrinfo *ai;
113 	int err;
114 
115 	/* Should already have the address list. */
116 	if ((ctx->ct_flags & SMBCF_RESOLVED) == 0)
117 		return (EINVAL);
118 
119 	err = EPROTONOSUPPORT;  /* in case no AF match */
120 	for (ai = ctx->ct_addrinfo; ai; ai = ai->ai_next) {
121 
122 		switch (ai->ai_family) {
123 
124 		case AF_INET:
125 		case AF_INET6:
126 		case AF_NETBIOS:
127 			err = fknewvc(ctx, ai);
128 			if (err == 0)
129 				return (0);
130 			break;
131 
132 		default:
133 			break;
134 		}
135 	}
136 
137 	/*
138 	 * In the error case, the caller may try again
139 	 * with new auth. info, so keep the door open.
140 	 * Error return will close in smb_ctx_done.
141 	 */
142 	return (err);
143 }
144