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