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 * $NetBSD: rpc_callmsg.c,v 1.16 2000/07/14 08:40:42 fvdl Exp $ 32 * $FreeBSD: src/lib/libc/rpc/rpc_callmsg.c,v 1.13 2007/11/20 01:51:20 jb Exp $ 33 * $DragonFly: src/lib/libc/rpc/rpc_callmsg.c,v 1.4 2005/11/13 12:27:04 swildner Exp $ 34 */ 35 36 /* 37 * rpc_callmsg.c 38 * 39 * Copyright (C) 1984, Sun Microsystems, Inc. 40 * 41 */ 42 43 #include "namespace.h" 44 #include <assert.h> 45 #include <stdlib.h> 46 #include <string.h> 47 48 #include <rpc/rpc.h> 49 #include "un-namespace.h" 50 51 /* 52 * XDR a call message 53 */ 54 bool_t 55 xdr_callmsg(XDR *xdrs, struct rpc_msg *cmsg) 56 { 57 enum msg_type *prm_direction; 58 int32_t *buf; 59 struct opaque_auth *oa; 60 61 assert(xdrs != NULL); 62 assert(cmsg != NULL); 63 64 if (xdrs->x_op == XDR_ENCODE) { 65 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES) { 66 return (FALSE); 67 } 68 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES) { 69 return (FALSE); 70 } 71 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT 72 + RNDUP(cmsg->rm_call.cb_cred.oa_length) 73 + 2 * BYTES_PER_XDR_UNIT 74 + RNDUP(cmsg->rm_call.cb_verf.oa_length)); 75 if (buf != NULL) { 76 IXDR_PUT_INT32(buf, cmsg->rm_xid); 77 IXDR_PUT_ENUM(buf, cmsg->rm_direction); 78 if (cmsg->rm_direction != CALL) { 79 return (FALSE); 80 } 81 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_rpcvers); 82 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) { 83 return (FALSE); 84 } 85 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_prog); 86 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_vers); 87 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_proc); 88 oa = &cmsg->rm_call.cb_cred; 89 IXDR_PUT_ENUM(buf, oa->oa_flavor); 90 IXDR_PUT_INT32(buf, oa->oa_length); 91 if (oa->oa_length) { 92 memmove(buf, oa->oa_base, oa->oa_length); 93 buf += RNDUP(oa->oa_length) / sizeof (int32_t); 94 } 95 oa = &cmsg->rm_call.cb_verf; 96 IXDR_PUT_ENUM(buf, oa->oa_flavor); 97 IXDR_PUT_INT32(buf, oa->oa_length); 98 if (oa->oa_length) { 99 memmove(buf, oa->oa_base, oa->oa_length); 100 /* no real need.... 101 buf += RNDUP(oa->oa_length) / sizeof (int32_t); 102 */ 103 } 104 return (TRUE); 105 } 106 } 107 if (xdrs->x_op == XDR_DECODE) { 108 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT); 109 if (buf != NULL) { 110 cmsg->rm_xid = IXDR_GET_U_INT32(buf); 111 cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type); 112 if (cmsg->rm_direction != CALL) { 113 return (FALSE); 114 } 115 cmsg->rm_call.cb_rpcvers = IXDR_GET_U_INT32(buf); 116 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) { 117 return (FALSE); 118 } 119 cmsg->rm_call.cb_prog = IXDR_GET_U_INT32(buf); 120 cmsg->rm_call.cb_vers = IXDR_GET_U_INT32(buf); 121 cmsg->rm_call.cb_proc = IXDR_GET_U_INT32(buf); 122 oa = &cmsg->rm_call.cb_cred; 123 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t); 124 oa->oa_length = (u_int)IXDR_GET_U_INT32(buf); 125 if (oa->oa_length) { 126 if (oa->oa_length > MAX_AUTH_BYTES) { 127 return (FALSE); 128 } 129 if (oa->oa_base == NULL) { 130 oa->oa_base = (caddr_t) 131 mem_alloc(oa->oa_length); 132 if (oa->oa_base == NULL) 133 return (FALSE); 134 } 135 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length)); 136 if (buf == NULL) { 137 if (xdr_opaque(xdrs, oa->oa_base, 138 oa->oa_length) == FALSE) { 139 return (FALSE); 140 } 141 } else { 142 memmove(oa->oa_base, buf, 143 oa->oa_length); 144 /* no real need.... 145 buf += RNDUP(oa->oa_length) / 146 sizeof (int32_t); 147 */ 148 } 149 } 150 oa = &cmsg->rm_call.cb_verf; 151 buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT); 152 if (buf == NULL) { 153 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE || 154 xdr_u_int(xdrs, &oa->oa_length) == FALSE) { 155 return (FALSE); 156 } 157 } else { 158 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t); 159 oa->oa_length = (u_int)IXDR_GET_U_INT32(buf); 160 } 161 if (oa->oa_length) { 162 if (oa->oa_length > MAX_AUTH_BYTES) { 163 return (FALSE); 164 } 165 if (oa->oa_base == NULL) { 166 oa->oa_base = (caddr_t) 167 mem_alloc(oa->oa_length); 168 if (oa->oa_base == NULL) 169 return (FALSE); 170 } 171 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length)); 172 if (buf == NULL) { 173 if (xdr_opaque(xdrs, oa->oa_base, 174 oa->oa_length) == FALSE) { 175 return (FALSE); 176 } 177 } else { 178 memmove(oa->oa_base, buf, 179 oa->oa_length); 180 /* no real need... 181 buf += RNDUP(oa->oa_length) / 182 sizeof (int32_t); 183 */ 184 } 185 } 186 return (TRUE); 187 } 188 } 189 prm_direction = &cmsg->rm_direction; 190 if ( 191 xdr_u_int32_t(xdrs, &(cmsg->rm_xid)) && 192 xdr_enum(xdrs, (enum_t *) prm_direction) && 193 (cmsg->rm_direction == CALL) && 194 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_rpcvers)) && 195 (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) && 196 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_prog)) && 197 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_vers)) && 198 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_proc)) && 199 xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) ) 200 return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf))); 201 return (FALSE); 202 } 203