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, MERCHANTABILITY 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_clntout.c 1.15 94/04/25 SMI; 1.11 89/02/22 (C) 1987 SMI 30 * $FreeBSD: src/usr.bin/rpcgen/rpc_clntout.c,v 1.12 2005/11/13 21:17:24 dwmalone Exp $ 31 */ 32 33 /* 34 * rpc_clntout.c, Client-stub outputter for the RPC protocol compiler 35 * Copyright (C) 1987, Sun Microsytsems, Inc. 36 */ 37 #include <stdio.h> 38 #include <string.h> 39 #include <rpc/types.h> 40 #include "rpc_parse.h" 41 #include "rpc_scan.h" 42 #include "rpc_util.h" 43 44 static void write_program(definition *); 45 static void printbody(proc_list *); 46 47 static char RESULT[] = "clnt_res"; 48 49 #define DEFAULT_TIMEOUT 25 /* in seconds */ 50 51 void 52 write_stubs(void) 53 { 54 list *l; 55 definition *def; 56 57 f_print(fout, 58 "\n/* Default timeout can be changed using clnt_control() */\n"); 59 f_print(fout, "static struct timeval TIMEOUT = { %d, 0 };\n", 60 DEFAULT_TIMEOUT); 61 for (l = defined; l != NULL; l = l->next) { 62 def = (definition *) l->val; 63 if (def->def_kind == DEF_PROGRAM) 64 write_program(def); 65 } 66 } 67 68 static void 69 write_program(definition *def) 70 { 71 version_list *vp; 72 proc_list *proc; 73 74 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 75 for (proc = vp->procs; proc != NULL; proc = proc->next) { 76 f_print(fout, "\n"); 77 if (mtflag == 0) { 78 ptype(proc->res_prefix, proc->res_type, 1); 79 f_print(fout, "*\n"); 80 pvname(proc->proc_name, vp->vers_num); 81 printarglist(proc, RESULT, "clnt", "CLIENT *"); 82 } else { 83 f_print(fout, "enum clnt_stat \n"); 84 pvname(proc->proc_name, vp->vers_num); 85 printarglist(proc, RESULT, "clnt", "CLIENT *"); 86 87 } 88 f_print(fout, "{\n"); 89 printbody(proc); 90 91 f_print(fout, "}\n"); 92 } 93 } 94 } 95 96 /* 97 * Writes out declarations of procedure's argument list. 98 * In either ANSI C style, in one of old rpcgen style (pass by reference), 99 * or new rpcgen style (multiple arguments, pass by value); 100 */ 101 102 /* sample addargname = "clnt"; sample addargtype = "CLIENT * " */ 103 104 void 105 printarglist(proc_list *proc, const char *result, const char *addargname, 106 const char *addargtype) 107 { 108 decl_list *l; 109 110 if (!newstyle) { 111 /* old style: always pass argument by reference */ 112 f_print(fout, "("); 113 ptype(proc->args.decls->decl.prefix, 114 proc->args.decls->decl.type, 1); 115 116 if (mtflag) {/* Generate result field */ 117 f_print(fout, "*argp, "); 118 ptype(proc->res_prefix, proc->res_type, 1); 119 f_print(fout, "*%s, %s%s)\n", 120 result, addargtype, addargname); 121 } else 122 f_print(fout, "*argp, %s%s)\n", addargtype, addargname); 123 } else if (streq(proc->args.decls->decl.type, "void")) { 124 /* newstyle, 0 argument */ 125 if (mtflag) { 126 f_print(fout, "("); 127 ptype(proc->res_prefix, proc->res_type, 1); 128 f_print(fout, "*%s, %s%s)\n", 129 result, addargtype, addargname); 130 } else 131 f_print(fout, "(%s%s)\n", addargtype, addargname); 132 } else { 133 /* new style, 1 or multiple arguments */ 134 f_print(fout, "("); 135 for (l = proc->args.decls; l != NULL; l = l->next) { 136 pdeclaration(proc->args.argname, &l->decl, 0, ", "); 137 } 138 if (mtflag) { 139 ptype(proc->res_prefix, proc->res_type, 1); 140 f_print(fout, "*%s, ", result); 141 142 } 143 f_print(fout, "%s%s)\n", addargtype, addargname); 144 } 145 } 146 147 148 149 static const char * 150 ampr(const char *type) 151 { 152 if (isvectordef(type, REL_ALIAS)) 153 return (""); 154 else 155 return ("&"); 156 } 157 158 static void 159 printbody(proc_list *proc) 160 { 161 decl_list *l; 162 bool_t args2 = (proc->arg_num > 1); 163 164 /* 165 * For new style with multiple arguments, need a structure in which 166 * to stuff the arguments. 167 */ 168 169 170 if (newstyle && args2) { 171 f_print(fout, "\t%s", proc->args.argname); 172 f_print(fout, " arg;\n"); 173 } 174 if (!mtflag) { 175 f_print(fout, "\tstatic "); 176 if (streq(proc->res_type, "void")) 177 f_print(fout, "char "); 178 else 179 ptype(proc->res_prefix, proc->res_type, 0); 180 f_print(fout, "%s;\n", RESULT); 181 f_print(fout, "\n"); 182 f_print(fout, "\tmemset((char *)%s%s, 0, sizeof (%s));\n", 183 ampr(proc->res_type), RESULT, RESULT); 184 } 185 if (newstyle && !args2 && 186 (streq(proc->args.decls->decl.type, "void"))) { 187 /* newstyle, 0 arguments */ 188 189 if (mtflag) 190 f_print(fout, "\t return "); 191 else 192 f_print(fout, "\t if "); 193 194 f_print(fout, 195 "(clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_void, ", 196 proc->proc_name); 197 f_print(fout, "(caddr_t) NULL,\n\t\t(xdrproc_t) xdr_%s, " 198 "(caddr_t) %s%s,", stringfix(proc->res_type), 199 (mtflag) ? "" : ampr(proc->res_type), RESULT); 200 201 if (mtflag) 202 f_print(fout, "\n\t\tTIMEOUT));\n"); 203 else 204 f_print(fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n"); 205 206 } else if (newstyle && args2) { 207 /* 208 * Newstyle, multiple arguments 209 * stuff arguments into structure 210 */ 211 for (l = proc->args.decls; l != NULL; l = l->next) { 212 f_print(fout, "\targ.%s = %s;\n", 213 l->decl.name, l->decl.name); 214 } 215 if (mtflag) 216 f_print(fout, "\treturn "); 217 else 218 f_print(fout, "\tif "); 219 f_print(fout, "(clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_%s", 220 proc->proc_name,proc->args.argname); 221 f_print(fout, ", (caddr_t) &arg,\n\t\t(xdrproc_t) xdr_%s, " 222 "(caddr_t) %s%s,", stringfix(proc->res_type), 223 (mtflag) ? "" : ampr(proc->res_type), RESULT); 224 if (mtflag) 225 f_print(fout, "\n\t\tTIMEOUT));\n"); 226 else 227 f_print(fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n"); 228 } else { /* single argument, new or old style */ 229 if (!mtflag) { 230 f_print(fout, "\tif (clnt_call(clnt, %s,\n" 231 "\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n" 232 "\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n" 233 "\t\tTIMEOUT) != RPC_SUCCESS) {\n", 234 proc->proc_name, 235 stringfix(proc->args.decls->decl.type), 236 (newstyle ? "&" : ""), 237 (newstyle) ? proc->args.decls->decl.name : "argp", 238 stringfix(proc->res_type), 239 ampr(proc->res_type), RESULT); 240 } else { 241 f_print(fout, "\treturn (clnt_call(clnt, %s,\n" 242 "\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n" 243 "\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n" 244 "\t\tTIMEOUT));\n", proc->proc_name, 245 stringfix(proc->args.decls->decl.type), 246 (newstyle ? "&" : ""), 247 (newstyle) ? proc->args.decls->decl.name : "argp", 248 stringfix(proc->res_type), "", RESULT); 249 } 250 } 251 if (!mtflag) { 252 f_print(fout, "\t\treturn (NULL);\n"); 253 f_print(fout, "\t}\n"); 254 255 if (streq(proc->res_type, "void")) { 256 f_print(fout, "\treturn ((void *)%s%s);\n", 257 ampr(proc->res_type), RESULT); 258 } else { 259 f_print(fout, "\treturn (%s%s);\n", 260 ampr(proc->res_type), RESULT); 261 } 262 } 263 } 264