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, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22
23 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
24 /* All Rights Reserved */
25
26 /*
27 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
28 * Use is subject to license terms.
29 */
30
31 #pragma ident "%Z%%M% %I% %E% SMI"
32
33 #include "mt.h"
34 #include <stdlib.h>
35 #include <errno.h>
36 #include <unistd.h>
37 #include <string.h>
38 #include <stropts.h>
39 #include <sys/stream.h>
40 #include <xti.h>
41 #define _SUN_TPI_VERSION 2
42 #include <sys/tihdr.h>
43 #include <sys/timod.h>
44 #include <assert.h>
45 #include <signal.h>
46 #include "tx.h"
47
48 static int __tx_tlitpi_getprotaddr_locked(struct _ti_user *tiptr,
49 struct t_bind *boundaddr, struct t_bind *peer);
50
51
52 static int __tx_getname_locked(int fd, struct netbuf *name, int type);
53
54 int
_tx_getname(int fd,struct netbuf * name,int type,int api_semantics)55 _tx_getname(int fd, struct netbuf *name, int type, int api_semantics)
56 {
57 struct _ti_user *tiptr;
58 int retval, sv_errno;
59
60 assert(_T_IS_TLI(api_semantics)); /* TLI only interface */
61 if (!name || ((type != LOCALNAME) && (type != REMOTENAME))) {
62 errno = EINVAL;
63 return (-1);
64 }
65
66 if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == 0)
67 return (-1);
68 sig_mutex_lock(&tiptr->ti_lock);
69
70 retval = __tx_getname_locked(fd, name, type);
71
72 if (retval < 0) {
73 sv_errno = errno;
74 sig_mutex_unlock(&tiptr->ti_lock);
75 errno = sv_errno;
76 return (-1);
77 }
78
79 sig_mutex_unlock(&tiptr->ti_lock);
80
81 return (0);
82 }
83
84
85 static int
__tx_getname_locked(int fd,struct netbuf * name,int type)86 __tx_getname_locked(int fd, struct netbuf *name, int type)
87 {
88 int retval;
89
90 do {
91 retval = ioctl(fd,
92 (type == LOCALNAME) ? TI_GETMYNAME : TI_GETPEERNAME, name);
93 } while (retval < 0 && errno == EINTR);
94
95 if (retval < 0) {
96 t_errno = TSYSERR;
97 return (-1);
98 }
99 return (0);
100 }
101
102
103
104 int
_tx_getprotaddr(int fd,struct t_bind * boundaddr,struct t_bind * peeraddr,int api_semantics)105 _tx_getprotaddr(
106 int fd,
107 struct t_bind *boundaddr,
108 struct t_bind *peeraddr,
109 int api_semantics)
110 {
111 struct _ti_user *tiptr;
112 int retval, sv_errno;
113 struct T_addr_req *addreqp;
114 struct T_addr_ack *addrackp;
115 int didalloc;
116 struct strbuf ctlbuf;
117 int retlen;
118
119 if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == 0)
120 return (-1);
121
122 sig_mutex_lock(&tiptr->ti_lock);
123
124 if ((tiptr->ti_prov_flag & XPG4_1) == 0) {
125 /*
126 * Provider does not support XTI inspired TPI so we
127 * try to do operation assuming TLI inspired TPI
128 */
129 retval = __tx_tlitpi_getprotaddr_locked(tiptr, boundaddr,
130 peeraddr);
131 sv_errno = errno;
132 sig_mutex_unlock(&tiptr->ti_lock);
133 errno = sv_errno;
134 return (retval);
135 }
136
137 /*
138 * Acquire buffer for use in sending/receiving the message.
139 * Note: assumes (correctly) that ti_ctlsize is large enough
140 * to hold sizeof (struct T_addr_req/ack)
141 */
142 if (_t_acquire_ctlbuf(tiptr, &ctlbuf, &didalloc) < 0) {
143 sv_errno = errno;
144 sig_mutex_unlock(&tiptr->ti_lock);
145 errno = sv_errno;
146 return (-1);
147 }
148
149 /* LINTED pointer cast */
150 addreqp = (struct T_addr_req *)ctlbuf.buf;
151 addreqp->PRIM_type = T_ADDR_REQ;
152
153 do {
154 retval = _t_do_ioctl(fd, ctlbuf.buf,
155 (int)sizeof (struct T_addr_req), TI_GETADDRS, &retlen);
156 } while (retval < 0 && errno == EINTR);
157
158 /* retval can now be either 0 or -1 */
159 if (retval < 0) {
160 sv_errno = errno;
161 sig_mutex_unlock(&tiptr->ti_lock);
162 errno = sv_errno;
163 goto err_out;
164 }
165 sig_mutex_unlock(&tiptr->ti_lock);
166
167 if (retlen < (int)sizeof (struct T_addr_ack)) {
168 t_errno = TSYSERR;
169 errno = EIO;
170 retval = -1;
171 goto err_out;
172 }
173
174 /* LINTED pointer cast */
175 addrackp = (struct T_addr_ack *)ctlbuf.buf;
176
177 /*
178 * We assume null parameters are OK and not errors
179 */
180 if (boundaddr != NULL && boundaddr->addr.maxlen > 0) {
181 if (TLEN_GT_NLEN(addrackp->LOCADDR_length,
182 boundaddr->addr.maxlen)) {
183 t_errno = TBUFOVFLW;
184 retval = -1;
185 goto err_out;
186 }
187 boundaddr->addr.len = addrackp->LOCADDR_length;
188 (void) memcpy(boundaddr->addr.buf,
189 ctlbuf.buf + addrackp->LOCADDR_offset,
190 (size_t)addrackp->LOCADDR_length);
191 }
192
193 /*
194 * Note: In states where there is no remote end of the connection
195 * the T_ADDR_REQ primitive does not return a remote address. However,
196 * in protcols such as TCP, the transport connection is established
197 * before the TLI/XTI level association is established. Therefore,
198 * in state T_OUTCON, the transport may return a remote address where
199 * TLI/XTI level thinks there is no remote end and therefore
200 * no remote address should be returned. We therefore do not look at
201 * address returned by transport provider in T_OUTCON state.
202 * Tested by XTI test suite.
203 */
204 if (tiptr->ti_state != T_OUTCON &&
205 peeraddr != NULL && peeraddr->addr.maxlen > 0) {
206 if (TLEN_GT_NLEN(addrackp->REMADDR_length,
207 peeraddr->addr.maxlen)) {
208 t_errno = TBUFOVFLW;
209 retval = -1;
210 goto err_out;
211 }
212 peeraddr->addr.len = addrackp->REMADDR_length;
213 (void) memcpy(peeraddr->addr.buf,
214 ctlbuf.buf + addrackp->REMADDR_offset,
215 (size_t)addrackp->REMADDR_length);
216 }
217
218 err_out:
219 if (didalloc)
220 free(ctlbuf.buf);
221 else
222 tiptr->ti_ctlbuf = ctlbuf.buf;
223 return (retval);
224 }
225
226 static int
__tx_tlitpi_getprotaddr_locked(struct _ti_user * tiptr,struct t_bind * boundaddr,struct t_bind * peeraddr)227 __tx_tlitpi_getprotaddr_locked(
228 struct _ti_user *tiptr,
229 struct t_bind *boundaddr,
230 struct t_bind *peeraddr)
231 {
232 if (boundaddr) {
233 boundaddr->addr.len = 0;
234 if (tiptr->ti_state >= TS_IDLE) {
235 /*
236 * assume bound endpoint .
237 * Note: TI_GETMYNAME can return
238 * a finite length all zeroes address for unbound
239 * endpoint so we avoid relying on it for bound
240 * endpoints for XTI t_getprotaddr() semantics.
241 */
242 if (__tx_getname_locked(tiptr->ti_fd, &boundaddr->addr,
243 LOCALNAME) < 0)
244 return (-1);
245
246 }
247 }
248 if (peeraddr) {
249
250 peeraddr->addr.len = 0;
251
252 if (tiptr->ti_state >= TS_DATA_XFER) {
253 /*
254 * assume connected endpoint.
255 * The TI_GETPEERNAME call can fail with error
256 * if endpoint is not connected so we don't call it
257 * for XTI t_getprotaddr() semantics
258 */
259 if (__tx_getname_locked(tiptr->ti_fd, &peeraddr->addr,
260 REMOTENAME) < 0)
261 return (-1);
262 }
263 }
264 return (0);
265 }
266