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 #ident "@(#)rpc_clntout.c 1.15 94/04/25 SMI" 31 32 #ifndef lint 33 static char sccsid[] = "@(#)rpc_clntout.c 1.11 89/02/22 (C) 1987 SMI"; 34 #endif 35 36 /* 37 * rpc_clntout.c, Client-stub outputter for the RPC protocol compiler 38 * Copyright (C) 1987, Sun Microsytsems, Inc. 39 */ 40 #include <stdio.h> 41 #include <string.h> 42 #include <rpc/types.h> 43 #include "rpc_parse.h" 44 #include "rpc_util.h" 45 46 extern void pdeclaration __P(( char *, declaration *, int, char * )); 47 void printarglist __P(( proc_list *, char *, char *, char *)); 48 static void write_program __P(( definition * )); 49 static void printbody __P(( proc_list * )); 50 51 static char RESULT[] = "clnt_res"; 52 53 54 #define DEFAULT_TIMEOUT 25 /* in seconds */ 55 56 57 void 58 write_stubs() 59 { 60 list *l; 61 definition *def; 62 63 f_print(fout, 64 "\n/* Default timeout can be changed using clnt_control() */\n"); 65 f_print(fout, "static struct timeval TIMEOUT = { %d, 0 };\n", 66 DEFAULT_TIMEOUT); 67 for (l = defined; l != NULL; l = l->next) { 68 def = (definition *) l->val; 69 if (def->def_kind == DEF_PROGRAM) { 70 write_program(def); 71 } 72 } 73 } 74 75 static void 76 write_program(def) 77 definition *def; 78 { 79 version_list *vp; 80 proc_list *proc; 81 82 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 83 for (proc = vp->procs; proc != NULL; proc = proc->next) { 84 f_print(fout, "\n"); 85 if (mtflag == 0) { 86 ptype(proc->res_prefix, proc->res_type, 1); 87 f_print(fout, "*\n"); 88 pvname(proc->proc_name, vp->vers_num); 89 printarglist(proc, RESULT, "clnt", "CLIENT *"); 90 } else { 91 f_print(fout, "enum clnt_stat \n"); 92 pvname(proc->proc_name, vp->vers_num); 93 printarglist(proc, RESULT, "clnt", "CLIENT *"); 94 95 } 96 f_print(fout, "{\n"); 97 printbody(proc); 98 99 f_print(fout, "}\n"); 100 } 101 } 102 } 103 104 /* 105 * Writes out declarations of procedure's argument list. 106 * In either ANSI C style, in one of old rpcgen style (pass by reference), 107 * or new rpcgen style (multiple arguments, pass by value); 108 */ 109 110 /* sample addargname = "clnt"; sample addargtype = "CLIENT * " */ 111 112 void printarglist(proc, result, addargname, addargtype) 113 proc_list *proc; 114 char *result; 115 char* addargname, * addargtype; 116 { 117 118 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 ptype(proc->res_prefix, proc->res_type, 1); 130 f_print(fout, "*%s, %s%s)\n", 131 result, addargtype, addargname); 132 } else 133 f_print(fout, "*argp, %s%s)\n", addargtype, addargname); 134 } else { 135 if (!mtflag) 136 f_print(fout, "(argp, %s)\n", addargname); 137 else 138 f_print(fout, "(argp, %s, %s)\n", 139 result, addargname); 140 f_print(fout, "\t"); 141 ptype(proc->args.decls->decl.prefix, 142 proc->args.decls->decl.type, 1); 143 f_print(fout, "*argp;\n"); 144 if (mtflag) { 145 f_print(fout, "\t"); 146 ptype(proc->res_prefix, proc->res_type, 1); 147 f_print(fout, "*%s;\n", result); 148 } 149 } 150 } else if (streq(proc->args.decls->decl.type, "void")) { 151 /* newstyle, 0 argument */ 152 if (mtflag) { 153 f_print(fout, "("); 154 155 156 if (Cflag) { 157 ptype(proc->res_prefix, proc->res_type, 1); 158 f_print(fout, "*%s, %s%s)\n", 159 result, addargtype, addargname); 160 } 161 else 162 f_print(fout, "(%s)\n", addargname); 163 164 } else 165 if (Cflag) 166 f_print(fout, "(%s%s)\n", addargtype, addargname); 167 else 168 f_print(fout, "(%s)\n", addargname); 169 } else { 170 /* new style, 1 or multiple arguments */ 171 if (!Cflag) { 172 f_print(fout, "("); 173 for (l = proc->args.decls; l != NULL; l = l->next) 174 f_print(fout, "%s, ", l->decl.name); 175 if (mtflag) 176 f_print(fout, "%s, ", result); 177 178 f_print(fout, "%s)\n", addargname); 179 for (l = proc->args.decls; l != NULL; l = l->next) { 180 pdeclaration(proc->args.argname, 181 &l->decl, 1, ";\n"); 182 } 183 if (mtflag) { 184 f_print(fout, "\t"); 185 ptype(proc->res_prefix, proc->res_type, 1); 186 f_print(fout, "*%s;\n", result); 187 } 188 189 } else { /* C++ style header */ 190 f_print(fout, "("); 191 for (l = proc->args.decls; l != NULL; l = l->next) { 192 pdeclaration(proc->args.argname, &l->decl, 0, 193 ", "); 194 } 195 if (mtflag) { 196 ptype(proc->res_prefix, proc->res_type, 1); 197 f_print(fout, "*%s, ", result); 198 199 } 200 f_print(fout, "%s%s)\n", addargtype, addargname); 201 } 202 } 203 204 if (!Cflag) 205 f_print(fout, "\t%s%s;\n", addargtype, addargname); 206 } 207 208 209 210 static char * 211 ampr(type) 212 char *type; 213 { 214 if (isvectordef(type, REL_ALIAS)) { 215 return (""); 216 } else { 217 return ("&"); 218 } 219 } 220 221 static void 222 printbody(proc) 223 proc_list *proc; 224 { 225 decl_list *l; 226 bool_t args2 = (proc->arg_num > 1); 227 228 /* 229 * For new style with multiple arguments, need a structure in which 230 * to stuff the arguments. 231 */ 232 233 234 if (newstyle && args2) { 235 f_print(fout, "\t%s", proc->args.argname); 236 f_print(fout, " arg;\n"); 237 } 238 if (!mtflag) { 239 f_print(fout, "\tstatic "); 240 if (streq(proc->res_type, "void")) { 241 f_print(fout, "char "); 242 } else { 243 ptype(proc->res_prefix, proc->res_type, 0); 244 } 245 f_print(fout, "%s;\n", RESULT); 246 f_print(fout, "\n"); 247 f_print(fout, "\tmemset((char *)%s%s, 0, sizeof (%s));\n", 248 ampr(proc->res_type), RESULT, RESULT); 249 250 } 251 if (newstyle && !args2 && 252 (streq(proc->args.decls->decl.type, "void"))) { 253 /* newstyle, 0 arguments */ 254 255 if (mtflag) 256 f_print(fout, "\t return "); 257 else 258 f_print(fout, "\t if "); 259 260 f_print(fout, 261 "(clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_void, ", 262 proc->proc_name); 263 f_print(fout, 264 "(caddr_t) NULL,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,", 265 stringfix(proc->res_type), (mtflag)?"":ampr(proc->res_type), 266 RESULT); 267 268 if (mtflag) 269 f_print(fout, "\n\t\tTIMEOUT));\n}\n"); 270 else 271 f_print(fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n"); 272 273 } else if (newstyle && args2) { 274 /* 275 * Newstyle, multiple arguments 276 * stuff arguments into structure 277 */ 278 for (l = proc->args.decls; l != NULL; l = l->next) { 279 f_print(fout, "\targ.%s = %s;\n", 280 l->decl.name, l->decl.name); 281 } 282 if (mtflag) 283 f_print(fout, "\treturn "); 284 else 285 f_print(fout, "\tif "); 286 f_print(fout, 287 "(clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_%s", 288 proc->proc_name,proc->args.argname); 289 f_print(fout, 290 ", (caddr_t) &arg,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,", 291 stringfix(proc->res_type), (mtflag)?"":ampr(proc->res_type), 292 RESULT); 293 if (mtflag) 294 f_print(fout, "\n\t\tTIMEOUT));\n"); 295 else 296 f_print(fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n"); 297 } else { /* single argument, new or old style */ 298 if (!mtflag) 299 f_print(fout, 300 "\tif (clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n\t\tTIMEOUT) != RPC_SUCCESS) {\n", 301 proc->proc_name, 302 stringfix(proc->args.decls->decl.type), 303 (newstyle ? "&" : ""), 304 (newstyle ? proc->args.decls->decl.name : "argp"), 305 stringfix(proc->res_type), ampr(proc->res_type), 306 RESULT); 307 else 308 309 f_print(fout, 310 "\treturn (clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n\t\tTIMEOUT));\n", 311 proc->proc_name, 312 stringfix(proc->args.decls->decl.type), 313 (newstyle ? "&" : ""), 314 (newstyle ? proc->args.decls->decl.name : "argp"), 315 stringfix(proc->res_type), "", 316 RESULT); 317 } 318 if (!mtflag) { 319 f_print(fout, "\t\treturn (NULL);\n"); 320 f_print(fout, "\t}\n"); 321 322 if (streq(proc->res_type, "void")) { 323 f_print(fout, "\treturn ((void *)%s%s);\n", 324 ampr(proc->res_type), RESULT); 325 } else { 326 f_print(fout, "\treturn (%s%s);\n", 327 ampr(proc->res_type), RESULT); 328 } 329 } 330 } 331