1 /* 2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 3 * unrestricted use provided that this legend is included on all tape 4 * media and as a part of the software program in whole or part. Users 5 * may copy or modify Sun RPC without charge, but are not authorized 6 * to license or distribute it to anyone else except as part of a product or 7 * program developed by the user. 8 * 9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 12 * 13 * Sun RPC is provided with no support and without any obligation on the 14 * part of Sun Microsystems, Inc. to assist in its use, correction, 15 * modification or enhancement. 16 * 17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 19 * OR ANY PART THEREOF. 20 * 21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 22 * or profits or other special, indirect and consequential damages, even if 23 * Sun has been advised of the possibility of such damages. 24 * 25 * Sun Microsystems, Inc. 26 * 2550 Garcia Avenue 27 * Mountain View, California 94043 28 * 29 * @(#)rpc_callmsg.c 1.4 87/08/11 Copyr 1984 Sun Micro 30 * @(#)rpc_callmsg.c 2.1 88/07/29 4.0 RPCSRC 31 * $FreeBSD: src/lib/libc/rpc/rpc_callmsg.c,v 1.9 1999/08/28 00:00:45 peter Exp $ 32 * $DragonFly: src/lib/libc/rpc/rpc_callmsg.c,v 1.3 2004/10/25 19:38:02 drhodus Exp $ 33 */ 34 35 /* 36 * rpc_callmsg.c 37 * 38 * Copyright (C) 1984, Sun Microsystems, Inc. 39 * 40 */ 41 42 #include <sys/param.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <rpc/rpc.h> 46 47 /* 48 * XDR a call message 49 */ 50 bool_t 51 xdr_callmsg(xdrs, cmsg) 52 XDR *xdrs; 53 struct rpc_msg *cmsg; 54 { 55 int32_t *buf; 56 struct opaque_auth *oa; 57 58 if (xdrs->x_op == XDR_ENCODE) { 59 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES) { 60 return (FALSE); 61 } 62 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES) { 63 return (FALSE); 64 } 65 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT 66 + RNDUP(cmsg->rm_call.cb_cred.oa_length) 67 + 2 * BYTES_PER_XDR_UNIT 68 + RNDUP(cmsg->rm_call.cb_verf.oa_length)); 69 if (buf != NULL) { 70 IXDR_PUT_LONG(buf, cmsg->rm_xid); 71 IXDR_PUT_ENUM(buf, cmsg->rm_direction); 72 if (cmsg->rm_direction != CALL) { 73 return (FALSE); 74 } 75 IXDR_PUT_LONG(buf, cmsg->rm_call.cb_rpcvers); 76 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) { 77 return (FALSE); 78 } 79 IXDR_PUT_LONG(buf, cmsg->rm_call.cb_prog); 80 IXDR_PUT_LONG(buf, cmsg->rm_call.cb_vers); 81 IXDR_PUT_LONG(buf, cmsg->rm_call.cb_proc); 82 oa = &cmsg->rm_call.cb_cred; 83 IXDR_PUT_ENUM(buf, oa->oa_flavor); 84 IXDR_PUT_LONG(buf, oa->oa_length); 85 if (oa->oa_length) { 86 memcpy((caddr_t)buf, oa->oa_base, oa->oa_length); 87 buf += RNDUP(oa->oa_length) / sizeof (int32_t); 88 } 89 oa = &cmsg->rm_call.cb_verf; 90 IXDR_PUT_ENUM(buf, oa->oa_flavor); 91 IXDR_PUT_LONG(buf, oa->oa_length); 92 if (oa->oa_length) { 93 memcpy((caddr_t)buf, oa->oa_base, oa->oa_length); 94 /* no real need.... 95 buf += RNDUP(oa->oa_length) / sizeof (int32_t); 96 */ 97 } 98 return (TRUE); 99 } 100 } 101 if (xdrs->x_op == XDR_DECODE) { 102 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT); 103 if (buf != NULL) { 104 cmsg->rm_xid = IXDR_GET_LONG(buf); 105 cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type); 106 if (cmsg->rm_direction != CALL) { 107 return (FALSE); 108 } 109 cmsg->rm_call.cb_rpcvers = IXDR_GET_LONG(buf); 110 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) { 111 return (FALSE); 112 } 113 cmsg->rm_call.cb_prog = IXDR_GET_LONG(buf); 114 cmsg->rm_call.cb_vers = IXDR_GET_LONG(buf); 115 cmsg->rm_call.cb_proc = IXDR_GET_LONG(buf); 116 oa = &cmsg->rm_call.cb_cred; 117 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t); 118 oa->oa_length = IXDR_GET_LONG(buf); 119 if (oa->oa_length) { 120 if (oa->oa_length > MAX_AUTH_BYTES) { 121 return (FALSE); 122 } 123 if (oa->oa_base == NULL) { 124 oa->oa_base = (caddr_t) 125 mem_alloc(oa->oa_length); 126 } 127 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length)); 128 if (buf == NULL) { 129 if (xdr_opaque(xdrs, oa->oa_base, 130 oa->oa_length) == FALSE) { 131 return (FALSE); 132 } 133 } else { 134 memcpy(oa->oa_base, (caddr_t)buf, 135 oa->oa_length); 136 /* no real need.... 137 buf += RNDUP(oa->oa_length) / 138 sizeof (int32_t); 139 */ 140 } 141 } 142 oa = &cmsg->rm_call.cb_verf; 143 buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT); 144 if (buf == NULL) { 145 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE || 146 xdr_u_int(xdrs, &oa->oa_length) == FALSE) { 147 return (FALSE); 148 } 149 } else { 150 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t); 151 oa->oa_length = IXDR_GET_LONG(buf); 152 } 153 if (oa->oa_length) { 154 if (oa->oa_length > MAX_AUTH_BYTES) { 155 return (FALSE); 156 } 157 if (oa->oa_base == NULL) { 158 oa->oa_base = (caddr_t) 159 mem_alloc(oa->oa_length); 160 } 161 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length)); 162 if (buf == NULL) { 163 if (xdr_opaque(xdrs, oa->oa_base, 164 oa->oa_length) == FALSE) { 165 return (FALSE); 166 } 167 } else { 168 memcpy(oa->oa_base, (caddr_t)buf, 169 oa->oa_length); 170 /* no real need... 171 buf += RNDUP(oa->oa_length) / 172 sizeof (int32_t); 173 */ 174 } 175 } 176 return (TRUE); 177 } 178 } 179 if ( 180 xdr_u_int32_t(xdrs, &(cmsg->rm_xid)) && 181 xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) && 182 (cmsg->rm_direction == CALL) && 183 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_rpcvers)) && 184 (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) && 185 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_prog)) && 186 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_vers)) && 187 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_proc)) && 188 xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) ) 189 return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf))); 190 return (FALSE); 191 } 192 193