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 /* 24 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 /* 30 * University Copyright- Copyright (c) 1982, 1986, 1988 31 * The Regents of the University of California 32 * All Rights Reserved 33 * 34 * University Acknowledgment- Portions of this document are derived from 35 * software developed by the University of California, Berkeley, and its 36 * contributors. 37 */ 38 39 #pragma ident "%Z%%M% %I% %E% SMI" 40 41 /* 42 * rpc_clntout.c, Client-stub outputter for the RPC protocol compiler 43 */ 44 #include <stdio.h> 45 #include <string.h> 46 #include <rpc/types.h> 47 #include "rpc_parse.h" 48 #include "rpc_util.h" 49 50 extern void pdeclaration(char *, declaration *, int, char *); 51 extern void printarglist(proc_list *, char *, char *, char *); 52 53 static void write_program(definition *); 54 static void printbody(proc_list *); 55 56 static char RESULT[] = "clnt_res"; 57 58 #define DEFAULT_TIMEOUT 25 /* in seconds */ 59 60 void 61 write_stubs(void) 62 { 63 list *l; 64 definition *def; 65 66 f_print(fout, 67 "\n/* Default timeout can be changed using clnt_control() */\n"); 68 f_print(fout, "static struct timeval TIMEOUT = { %d, 0 };\n", 69 DEFAULT_TIMEOUT); 70 for (l = defined; l != NULL; l = l->next) { 71 def = (definition *) l->val; 72 if (def->def_kind == DEF_PROGRAM) { 73 write_program(def); 74 } 75 } 76 } 77 78 static void 79 write_program(definition *def) 80 { 81 version_list *vp; 82 proc_list *proc; 83 84 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 85 for (proc = vp->procs; proc != NULL; proc = proc->next) { 86 f_print(fout, "\n"); 87 if (mtflag == 0) { 88 ptype(proc->res_prefix, proc->res_type, 1); 89 f_print(fout, "*\n"); 90 pvname(proc->proc_name, vp->vers_num); 91 printarglist(proc, RESULT, "clnt", "CLIENT *"); 92 } else { 93 f_print(fout, "enum clnt_stat \n"); 94 pvname(proc->proc_name, vp->vers_num); 95 printarglist(proc, RESULT, "clnt", "CLIENT *"); 96 97 } 98 f_print(fout, "{\n"); 99 printbody(proc); 100 101 f_print(fout, "}\n"); 102 } 103 } 104 } 105 106 /* 107 * Writes out declarations of procedure's argument list. 108 * In either ANSI C style, in one of old rpcgen style (pass by reference), 109 * or new rpcgen style (multiple arguments, pass by value); 110 */ 111 112 /* sample addargname = "clnt"; sample addargtype = "CLIENT * " */ 113 114 void 115 printarglist(proc_list *proc, char *result, char *addargname, char *addargtype) 116 { 117 bool_t oneway = streq(proc->res_type, "oneway"); 118 decl_list *l; 119 120 if (!newstyle) { 121 /* old style: always pass argument by reference */ 122 if (Cflag) { /* C++ style heading */ 123 f_print(fout, "("); 124 ptype(proc->args.decls->decl.prefix, 125 proc->args.decls->decl.type, 1); 126 127 if (mtflag) { /* Generate result field */ 128 f_print(fout, "*argp, "); 129 if (!oneway) { 130 ptype(proc->res_prefix, 131 proc->res_type, 1); 132 f_print(fout, "*%s, ", result); 133 } 134 f_print(fout, "%s%s)\n", 135 addargtype, addargname); 136 } else 137 f_print(fout, "*argp, %s%s)\n", 138 addargtype, addargname); 139 } else { 140 if (!mtflag) 141 f_print(fout, "(argp, %s)\n", addargname); 142 else { 143 f_print(fout, "(argp, "); 144 if (!oneway) { 145 f_print(fout, "%s, ", 146 result); 147 } 148 f_print(fout, "%s)\n", 149 addargname); 150 } 151 f_print(fout, "\t"); 152 ptype(proc->args.decls->decl.prefix, 153 proc->args.decls->decl.type, 1); 154 f_print(fout, "*argp;\n"); 155 if (mtflag && !oneway) { 156 f_print(fout, "\t"); 157 ptype(proc->res_prefix, proc->res_type, 1); 158 f_print(fout, "*%s;\n", result); 159 } 160 } 161 } else if (streq(proc->args.decls->decl.type, "void")) { 162 /* newstyle, 0 argument */ 163 if (mtflag) { 164 f_print(fout, "("); 165 166 if (Cflag) { 167 if (!oneway) { 168 ptype(proc->res_prefix, 169 proc->res_type, 1); 170 f_print(fout, "*%s, ", result); 171 } 172 f_print(fout, "%s%s)\n", 173 addargtype, addargname); 174 } else 175 f_print(fout, "(%s)\n", addargname); 176 177 } else 178 if (Cflag) 179 f_print(fout, "(%s%s)\n", addargtype, addargname); 180 else 181 f_print(fout, "(%s)\n", addargname); 182 } else { 183 /* new style, 1 or multiple arguments */ 184 if (!Cflag) { 185 f_print(fout, "("); 186 for (l = proc->args.decls; l != NULL; l = l->next) 187 f_print(fout, "%s, ", l->decl.name); 188 if (mtflag && !oneway) 189 f_print(fout, "%s, ", result); 190 191 f_print(fout, "%s)\n", addargname); 192 for (l = proc->args.decls; l != NULL; l = l->next) { 193 pdeclaration(proc->args.argname, 194 &l->decl, 1, ";\n"); 195 } 196 if (mtflag && !oneway) { 197 f_print(fout, "\t"); 198 ptype(proc->res_prefix, proc->res_type, 1); 199 f_print(fout, "*%s;\n", result); 200 } 201 202 } else { /* C++ style header */ 203 f_print(fout, "("); 204 for (l = proc->args.decls; l != NULL; l = l->next) { 205 pdeclaration(proc->args.argname, &l->decl, 0, 206 ", "); 207 } 208 if (mtflag && !oneway) { 209 ptype(proc->res_prefix, proc->res_type, 1); 210 f_print(fout, "*%s, ", result); 211 212 } 213 f_print(fout, "%s%s)\n", addargtype, addargname); 214 } 215 } 216 217 if (!Cflag) 218 f_print(fout, "\t%s%s;\n", addargtype, addargname); 219 } 220 221 222 223 static char * 224 ampr(char *type) 225 { 226 if (isvectordef(type, REL_ALIAS)) { 227 return (""); 228 } else { 229 return ("&"); 230 } 231 } 232 233 static void 234 printbody(proc_list *proc) 235 { 236 decl_list *l; 237 bool_t args2 = (proc->arg_num > 1); 238 bool_t oneway = streq(proc->res_type, "oneway"); 239 240 /* 241 * For new style with multiple arguments, need a structure in which 242 * to stuff the arguments. 243 */ 244 if (newstyle && args2) { 245 f_print(fout, "\t%s", proc->args.argname); 246 f_print(fout, " arg;\n"); 247 } 248 if (!oneway) { 249 if (!mtflag) { 250 f_print(fout, "\tstatic "); 251 if (streq(proc->res_type, "void")) { 252 f_print(fout, "char "); 253 } else { 254 ptype(proc->res_prefix, proc->res_type, 0); 255 } 256 f_print(fout, "%s;\n", RESULT); 257 f_print(fout, "\n"); 258 f_print(fout, 259 "\t(void) memset(%s%s, 0, sizeof (%s));\n", 260 ampr(proc->res_type), RESULT, RESULT); 261 262 } 263 if (newstyle && !args2 && 264 (streq(proc->args.decls->decl.type, "void"))) { 265 /* newstyle, 0 arguments */ 266 267 if (mtflag) 268 f_print(fout, "\t return "); 269 else 270 f_print(fout, "\t if "); 271 272 f_print(fout, 273 "(clnt_call(clnt, %s,\n\t\t(xdrproc_t)xdr_void, ", 274 proc->proc_name); 275 f_print(fout, 276 "NULL,\n\t\t(xdrproc_t)xdr_%s, " 277 "(caddr_t)%s%s,", 278 stringfix(proc->res_type), 279 (mtflag)?"":ampr(proc->res_type), 280 RESULT); 281 282 if (mtflag) 283 f_print(fout, "\n\t\tTIMEOUT));\n"); 284 else 285 f_print(fout, 286 "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n"); 287 288 } else if (newstyle && args2) { 289 /* 290 * Newstyle, multiple arguments 291 * stuff arguments into structure 292 */ 293 for (l = proc->args.decls; l != NULL; l = l->next) { 294 f_print(fout, "\targ.%s = %s;\n", 295 l->decl.name, l->decl.name); 296 } 297 if (mtflag) 298 f_print(fout, "\treturn "); 299 else 300 f_print(fout, "\tif "); 301 f_print(fout, 302 "(clnt_call(clnt, %s,\n\t\t(xdrproc_t)xdr_%s", 303 proc->proc_name, proc->args.argname); 304 f_print(fout, 305 ", (caddr_t)&arg,\n\t\t(xdrproc_t)xdr_%s, " 306 "(caddr_t)%s%s,", 307 stringfix(proc->res_type), 308 (mtflag)?"":ampr(proc->res_type), 309 RESULT); 310 if (mtflag) 311 f_print(fout, "\n\t\tTIMEOUT));\n"); 312 else 313 f_print(fout, 314 "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n"); 315 } else { /* single argument, new or old style */ 316 if (!mtflag) 317 f_print(fout, 318 "\tif (clnt_call(clnt, " 319 "%s,\n\t\t(xdrproc_t)xdr_%s, " 320 "(caddr_t)%s%s,\n\t\t(xdrproc_t)xdr_%s, " 321 "(caddr_t)%s%s,\n\t\tTIMEOUT) != " 322 "RPC_SUCCESS) {\n", 323 proc->proc_name, 324 stringfix(proc->args.decls->decl.type), 325 (newstyle ? "&" : ""), 326 (newstyle ? 327 proc->args.decls->decl.name : 328 "argp"), 329 stringfix(proc->res_type), 330 ampr(proc->res_type), 331 RESULT); 332 else 333 f_print(fout, 334 "\treturn (clnt_call(clnt, " 335 "%s,\n\t\t(xdrproc_t)xdr_%s, " 336 "(caddr_t)%s%s,\n\t\t(xdrproc_t)xdr_%s, " 337 "(caddr_t)%s%s,\n\t\tTIMEOUT));\n", 338 proc->proc_name, 339 stringfix(proc->args.decls->decl.type), 340 (newstyle ? "&" : ""), 341 (newstyle ? 342 proc->args.decls->decl.name : 343 "argp"), 344 stringfix(proc->res_type), "", 345 RESULT); 346 } 347 if (!mtflag) { 348 f_print(fout, "\t\treturn (NULL);\n"); 349 f_print(fout, "\t}\n"); 350 351 if (streq(proc->res_type, "void")) { 352 f_print(fout, "\treturn ((void *)%s%s);\n", 353 ampr(proc->res_type), RESULT); 354 } else { 355 f_print(fout, "\treturn (%s%s);\n", 356 ampr(proc->res_type), RESULT); 357 } 358 } 359 } else { 360 /* oneway call */ 361 if (!mtflag) { 362 f_print(fout, "\tstatic enum clnt_stat "); 363 f_print(fout, "%s;\n", RESULT); 364 f_print(fout, "\n"); 365 f_print(fout, 366 "\t(void) memset(&%s, 0, sizeof (%s));\n", 367 RESULT, RESULT); 368 369 } 370 if (newstyle && !args2 && 371 (streq(proc->args.decls->decl.type, "void"))) { 372 /* newstyle, 0 arguments */ 373 374 if (mtflag) 375 f_print(fout, "\t return ("); 376 else 377 f_print(fout, "\t if ((%s = ", RESULT); 378 379 f_print(fout, 380 "clnt_send(clnt, %s,\n\t\t(xdrproc_t)xdr_void, ", 381 proc->proc_name); 382 f_print(fout, "NULL)"); 383 384 if (mtflag) 385 f_print(fout, ");\n"); 386 else 387 f_print(fout, ") != RPC_SUCCESS) {\n"); 388 389 } else if (newstyle && args2) { 390 /* 391 * Newstyle, multiple arguments 392 * stuff arguments into structure 393 */ 394 for (l = proc->args.decls; l != NULL; l = l->next) { 395 f_print(fout, "\targ.%s = %s;\n", 396 l->decl.name, l->decl.name); 397 } 398 if (mtflag) 399 f_print(fout, "\treturn ("); 400 else 401 f_print(fout, "\tif ((%s =", RESULT); 402 f_print(fout, 403 "clnt_send(clnt, %s,\n\t\t(xdrproc_t)xdr_%s", 404 proc->proc_name, proc->args.argname); 405 f_print(fout, 406 ", (caddr_t)&arg)"); 407 if (mtflag) 408 f_print(fout, ");\n"); 409 else 410 f_print(fout, ") != RPC_SUCCESS) {\n"); 411 } else { /* single argument, new or old style */ 412 if (!mtflag) 413 f_print(fout, 414 "\tif ((%s = clnt_send(clnt, " 415 "%s,\n\t\t(xdrproc_t)xdr_%s, " 416 "(caddr_t)%s%s)) != RPC_SUCCESS) {\n", 417 RESULT, 418 proc->proc_name, 419 stringfix(proc->args.decls->decl.type), 420 (newstyle ? "&" : ""), 421 (newstyle ? 422 proc->args.decls->decl.name : 423 "argp")); 424 else 425 426 f_print(fout, 427 "\treturn (clnt_send(clnt, " 428 "%s,\n\t\t(xdrproc_t)xdr_%s, " 429 "(caddr_t)%s%s));\n", 430 proc->proc_name, 431 stringfix(proc->args.decls->decl.type), 432 (newstyle ? "&" : ""), 433 (newstyle ? 434 proc->args.decls->decl.name : 435 "argp")); 436 } 437 if (!mtflag) { 438 f_print(fout, "\t\treturn (NULL);\n"); 439 f_print(fout, "\t}\n"); 440 441 f_print(fout, "\treturn ((void *)&%s);\n", 442 RESULT); 443 } 444 } 445 } 446