rpc_prot.c revision 1.3.4.1
1 /* $NetBSD: rpc_prot.c,v 1.3.4.1 1996/09/16 23:44:35 jtc Exp $ */ 2 3 /* 4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 5 * unrestricted use provided that this legend is included on all tape 6 * media and as a part of the software program in whole or part. Users 7 * may copy or modify Sun RPC without charge, but are not authorized 8 * to license or distribute it to anyone else except as part of a product or 9 * program developed by the user. 10 * 11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 14 * 15 * Sun RPC is provided with no support and without any obligation on the 16 * part of Sun Microsystems, Inc. to assist in its use, correction, 17 * modification or enhancement. 18 * 19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 21 * OR ANY PART THEREOF. 22 * 23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 24 * or profits or other special, indirect and consequential damages, even if 25 * Sun has been advised of the possibility of such damages. 26 * 27 * Sun Microsystems, Inc. 28 * 2550 Garcia Avenue 29 * Mountain View, California 94043 30 */ 31 32 #if defined(LIBC_SCCS) && !defined(lint) 33 /*static char *sccsid = "from: @(#)rpc_prot.c 1.36 87/08/11 Copyr 1984 Sun Micro";*/ 34 /*static char *sccsid = "from: @(#)rpc_prot.c 2.3 88/08/07 4.0 RPCSRC";*/ 35 static char *rcsid = "$NetBSD: rpc_prot.c,v 1.3.4.1 1996/09/16 23:44:35 jtc Exp $"; 36 #endif 37 38 /* 39 * rpc_prot.c 40 * 41 * Copyright (C) 1984, Sun Microsystems, Inc. 42 * 43 * This set of routines implements the rpc message definition, 44 * its serializer and some common rpc utility routines. 45 * The routines are meant for various implementations of rpc - 46 * they are NOT for the rpc client or rpc service implementations! 47 * Because authentication stuff is easy and is part of rpc, the opaque 48 * routines are also in this program. 49 */ 50 51 #include "namespace.h" 52 #include <sys/param.h> 53 #include <rpc/rpc.h> 54 55 #ifdef __weak_alias 56 __weak_alias(xdr_accepted_reply,_xdr_accepted_reply); 57 __weak_alias(xdr_callhdr,_xdr_callhdr); 58 __weak_alias(xdr_des_block,_xdr_des_block); 59 __weak_alias(xdr_opaque_auth,_xdr_opaque_auth); 60 __weak_alias(xdr_rejected_reply,_xdr_rejected_reply); 61 __weak_alias(xdr_replymsg,_xdr_replymsg); 62 #endif 63 64 /* * * * * * * * * * * * * * XDR Authentication * * * * * * * * * * * */ 65 66 struct opaque_auth _null_auth; 67 68 /* 69 * XDR an opaque authentication struct 70 * (see auth.h) 71 */ 72 bool_t 73 xdr_opaque_auth(xdrs, ap) 74 register XDR *xdrs; 75 register struct opaque_auth *ap; 76 { 77 78 if (xdr_enum(xdrs, &(ap->oa_flavor))) 79 return (xdr_bytes(xdrs, &ap->oa_base, 80 &ap->oa_length, MAX_AUTH_BYTES)); 81 return (FALSE); 82 } 83 84 /* 85 * XDR a DES block 86 */ 87 bool_t 88 xdr_des_block(xdrs, blkp) 89 register XDR *xdrs; 90 register des_block *blkp; 91 { 92 return (xdr_opaque(xdrs, (caddr_t)blkp, sizeof(des_block))); 93 } 94 95 /* * * * * * * * * * * * * * XDR RPC MESSAGE * * * * * * * * * * * * * * * */ 96 97 /* 98 * XDR the MSG_ACCEPTED part of a reply message union 99 */ 100 bool_t 101 xdr_accepted_reply(xdrs, ar) 102 register XDR *xdrs; 103 register struct accepted_reply *ar; 104 { 105 106 /* personalized union, rather than calling xdr_union */ 107 if (! xdr_opaque_auth(xdrs, &(ar->ar_verf))) 108 return (FALSE); 109 if (! xdr_enum(xdrs, (enum_t *)&(ar->ar_stat))) 110 return (FALSE); 111 switch (ar->ar_stat) { 112 113 case SUCCESS: 114 return ((*(ar->ar_results.proc))(xdrs, ar->ar_results.where)); 115 116 case PROG_MISMATCH: 117 if (! xdr_u_int32_t(xdrs, &(ar->ar_vers.low))) 118 return (FALSE); 119 return (xdr_u_int32_t(xdrs, &(ar->ar_vers.high))); 120 } 121 return (TRUE); /* TRUE => open ended set of problems */ 122 } 123 124 /* 125 * XDR the MSG_DENIED part of a reply message union 126 */ 127 bool_t 128 xdr_rejected_reply(xdrs, rr) 129 register XDR *xdrs; 130 register struct rejected_reply *rr; 131 { 132 133 /* personalized union, rather than calling xdr_union */ 134 if (! xdr_enum(xdrs, (enum_t *)&(rr->rj_stat))) 135 return (FALSE); 136 switch (rr->rj_stat) { 137 138 case RPC_MISMATCH: 139 if (! xdr_u_int32_t(xdrs, &(rr->rj_vers.low))) 140 return (FALSE); 141 return (xdr_u_int32_t(xdrs, &(rr->rj_vers.high))); 142 143 case AUTH_ERROR: 144 return (xdr_enum(xdrs, (enum_t *)&(rr->rj_why))); 145 } 146 return (FALSE); 147 } 148 149 static struct xdr_discrim reply_dscrm[3] = { 150 { (int)MSG_ACCEPTED, xdr_accepted_reply }, 151 { (int)MSG_DENIED, xdr_rejected_reply }, 152 { __dontcare__, NULL_xdrproc_t } }; 153 154 /* 155 * XDR a reply message 156 */ 157 bool_t 158 xdr_replymsg(xdrs, rmsg) 159 register XDR *xdrs; 160 register struct rpc_msg *rmsg; 161 { 162 if ( 163 xdr_u_int32_t(xdrs, &(rmsg->rm_xid)) && 164 xdr_enum(xdrs, (enum_t *)&(rmsg->rm_direction)) && 165 (rmsg->rm_direction == REPLY) ) 166 return (xdr_union(xdrs, (enum_t *)&(rmsg->rm_reply.rp_stat), 167 (caddr_t)&(rmsg->rm_reply.ru), reply_dscrm, NULL_xdrproc_t)); 168 return (FALSE); 169 } 170 171 172 /* 173 * Serializes the "static part" of a call message header. 174 * The fields include: rm_xid, rm_direction, rpcvers, prog, and vers. 175 * The rm_xid is not really static, but the user can easily munge on the fly. 176 */ 177 bool_t 178 xdr_callhdr(xdrs, cmsg) 179 register XDR *xdrs; 180 register struct rpc_msg *cmsg; 181 { 182 183 cmsg->rm_direction = CALL; 184 cmsg->rm_call.cb_rpcvers = RPC_MSG_VERSION; 185 if ( 186 (xdrs->x_op == XDR_ENCODE) && 187 xdr_u_int32_t(xdrs, &(cmsg->rm_xid)) && 188 xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) && 189 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_rpcvers)) && 190 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_prog)) ) 191 return (xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_vers))); 192 return (FALSE); 193 } 194 195 /* ************************** Client utility routine ************* */ 196 197 static void 198 accepted(acpt_stat, error) 199 register enum accept_stat acpt_stat; 200 register struct rpc_err *error; 201 { 202 203 switch (acpt_stat) { 204 205 case PROG_UNAVAIL: 206 error->re_status = RPC_PROGUNAVAIL; 207 return; 208 209 case PROG_MISMATCH: 210 error->re_status = RPC_PROGVERSMISMATCH; 211 return; 212 213 case PROC_UNAVAIL: 214 error->re_status = RPC_PROCUNAVAIL; 215 return; 216 217 case GARBAGE_ARGS: 218 error->re_status = RPC_CANTDECODEARGS; 219 return; 220 221 case SYSTEM_ERR: 222 error->re_status = RPC_SYSTEMERROR; 223 return; 224 225 case SUCCESS: 226 error->re_status = RPC_SUCCESS; 227 return; 228 } 229 /* something's wrong, but we don't know what ... */ 230 error->re_status = RPC_FAILED; 231 error->re_lb.s1 = (long)MSG_ACCEPTED; 232 error->re_lb.s2 = (long)acpt_stat; 233 } 234 235 static void 236 rejected(rjct_stat, error) 237 register enum reject_stat rjct_stat; 238 register struct rpc_err *error; 239 { 240 241 switch (rjct_stat) { 242 243 case RPC_VERSMISMATCH: 244 error->re_status = RPC_VERSMISMATCH; 245 return; 246 247 case AUTH_ERROR: 248 error->re_status = RPC_AUTHERROR; 249 return; 250 } 251 /* something's wrong, but we don't know what ... */ 252 error->re_status = RPC_FAILED; 253 error->re_lb.s1 = (long)MSG_DENIED; 254 error->re_lb.s2 = (long)rjct_stat; 255 } 256 257 /* 258 * given a reply message, fills in the error 259 */ 260 void 261 _seterr_reply(msg, error) 262 register struct rpc_msg *msg; 263 register struct rpc_err *error; 264 { 265 266 /* optimized for normal, SUCCESSful case */ 267 switch (msg->rm_reply.rp_stat) { 268 269 case MSG_ACCEPTED: 270 if (msg->acpted_rply.ar_stat == SUCCESS) { 271 error->re_status = RPC_SUCCESS; 272 return; 273 }; 274 accepted(msg->acpted_rply.ar_stat, error); 275 break; 276 277 case MSG_DENIED: 278 rejected(msg->rjcted_rply.rj_stat, error); 279 break; 280 281 default: 282 error->re_status = RPC_FAILED; 283 error->re_lb.s1 = (long)(msg->rm_reply.rp_stat); 284 break; 285 } 286 switch (error->re_status) { 287 288 case RPC_VERSMISMATCH: 289 error->re_vers.low = msg->rjcted_rply.rj_vers.low; 290 error->re_vers.high = msg->rjcted_rply.rj_vers.high; 291 break; 292 293 case RPC_AUTHERROR: 294 error->re_why = msg->rjcted_rply.rj_why; 295 break; 296 297 case RPC_PROGVERSMISMATCH: 298 error->re_vers.low = msg->acpted_rply.ar_vers.low; 299 error->re_vers.high = msg->acpted_rply.ar_vers.high; 300 break; 301 } 302 } 303
Indexes created Wed Oct 01 07:09:59 GMT 2025