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 30 #if defined(LIBC_SCCS) && !defined(lint) 31 static char *rcsid = "$OpenBSD: rpc_callmsg.c,v 1.7 2001/09/15 13:51:01 deraadt Exp $"; 32 #endif /* LIBC_SCCS and not lint */ 33 34 /* 35 * rpc_callmsg.c 36 * 37 * Copyright (C) 1984, Sun Microsystems, Inc. 38 * 39 */ 40 41 #include <stdlib.h> 42 #include <string.h> 43 #include <sys/param.h> 44 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 if (oa->oa_base == NULL) 127 return (FALSE); 128 } 129 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length)); 130 if (buf == NULL) { 131 if (xdr_opaque(xdrs, oa->oa_base, 132 oa->oa_length) == FALSE) { 133 return (FALSE); 134 } 135 } else { 136 memcpy(oa->oa_base, (caddr_t)buf, 137 oa->oa_length); 138 /* no real need.... 139 buf += RNDUP(oa->oa_length) / 140 sizeof (int32_t); 141 */ 142 } 143 } 144 oa = &cmsg->rm_call.cb_verf; 145 buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT); 146 if (buf == NULL) { 147 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE || 148 xdr_u_int(xdrs, &oa->oa_length) == FALSE) { 149 return (FALSE); 150 } 151 } else { 152 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t); 153 oa->oa_length = IXDR_GET_LONG(buf); 154 } 155 if (oa->oa_length) { 156 if (oa->oa_length > MAX_AUTH_BYTES) { 157 return (FALSE); 158 } 159 if (oa->oa_base == NULL) { 160 oa->oa_base = (caddr_t) 161 mem_alloc(oa->oa_length); 162 if (oa->oa_base == NULL) 163 return (FALSE); 164 } 165 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length)); 166 if (buf == NULL) { 167 if (xdr_opaque(xdrs, oa->oa_base, 168 oa->oa_length) == FALSE) { 169 return (FALSE); 170 } 171 } else { 172 memcpy(oa->oa_base, (caddr_t)buf, 173 oa->oa_length); 174 /* no real need... 175 buf += RNDUP(oa->oa_length) / 176 sizeof (int32_t); 177 */ 178 } 179 } 180 return (TRUE); 181 } 182 } 183 if ( 184 xdr_u_int32_t(xdrs, &(cmsg->rm_xid)) && 185 xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) && 186 (cmsg->rm_direction == CALL) && 187 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_rpcvers)) && 188 (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) && 189 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_prog)) && 190 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_vers)) && 191 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_proc)) && 192 xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) ) 193 return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf))); 194 return (FALSE); 195 } 196 197