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 * @(#)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 * $DragonFly: src/usr.bin/rpcgen/rpc_clntout.c,v 1.5 2004/06/19 16:40:36 joerg Exp $ 32 */ 33 34 /* 35 * rpc_clntout.c, Client-stub outputter for the RPC protocol compiler 36 * Copyright (C) 1987, Sun Microsytsems, Inc. 37 */ 38 #include <stdio.h> 39 #include <string.h> 40 #include <rpc/types.h> 41 #include "rpc_parse.h" 42 #include "rpc_scan.h" 43 #include "rpc_util.h" 44 45 static void write_program(definition *); 46 static void printbody(proc_list *); 47 48 static char RESULT[] = "clnt_res"; 49 50 #define DEFAULT_TIMEOUT 25 /* in seconds */ 51 52 void 53 write_stubs(void) 54 { 55 list *l; 56 definition *def; 57 58 f_print(fout, 59 "\n/* Default timeout can be changed using clnt_control() */\n"); 60 f_print(fout, "static struct timeval TIMEOUT = { %d, 0 };\n", 61 DEFAULT_TIMEOUT); 62 for (l = defined; l != NULL; l = l->next) { 63 def = (definition *) l->val; 64 if (def->def_kind == DEF_PROGRAM) 65 write_program(def); 66 } 67 } 68 69 static void 70 write_program(definition *def) 71 { 72 version_list *vp; 73 proc_list *proc; 74 75 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 76 for (proc = vp->procs; proc != NULL; proc = proc->next) { 77 f_print(fout, "\n"); 78 if (mtflag == 0) { 79 ptype(proc->res_prefix, proc->res_type, 1); 80 f_print(fout, "*\n"); 81 pvname(proc->proc_name, vp->vers_num); 82 printarglist(proc, RESULT, "clnt", "CLIENT *"); 83 } else { 84 f_print(fout, "enum clnt_stat \n"); 85 pvname(proc->proc_name, vp->vers_num); 86 printarglist(proc, RESULT, "clnt", "CLIENT *"); 87 88 } 89 f_print(fout, "{\n"); 90 printbody(proc); 91 92 f_print(fout, "}\n"); 93 } 94 } 95 } 96 97 /* 98 * Writes out declarations of procedure's argument list. 99 * In either ANSI C style, in one of old rpcgen style (pass by reference), 100 * or new rpcgen style (multiple arguments, pass by value); 101 */ 102 103 /* sample addargname = "clnt"; sample addargtype = "CLIENT * " */ 104 105 void 106 printarglist(proc_list *proc, const char *result, const char *addargname, 107 const char *addargtype) 108 { 109 decl_list *l; 110 111 if (!newstyle) { 112 /* old style: always pass argument by reference */ 113 f_print(fout, "("); 114 ptype(proc->args.decls->decl.prefix, 115 proc->args.decls->decl.type, 1); 116 117 if (mtflag) {/* Generate result field */ 118 f_print(fout, "*argp, "); 119 ptype(proc->res_prefix, proc->res_type, 1); 120 f_print(fout, "*%s, %s%s)\n", 121 result, addargtype, addargname); 122 } else 123 f_print(fout, "*argp, %s%s)\n", addargtype, addargname); 124 } else if (streq(proc->args.decls->decl.type, "void")) { 125 /* newstyle, 0 argument */ 126 if (mtflag) { 127 f_print(fout, "("); 128 ptype(proc->res_prefix, proc->res_type, 1); 129 f_print(fout, "*%s, %s%s)\n", 130 result, addargtype, addargname); 131 } else 132 f_print(fout, "(%s%s)\n", addargtype, addargname); 133 } else { 134 /* new style, 1 or multiple arguments */ 135 f_print(fout, "("); 136 for (l = proc->args.decls; l != NULL; l = l->next) { 137 pdeclaration(proc->args.argname, &l->decl, 0, ", "); 138 } 139 if (mtflag) { 140 ptype(proc->res_prefix, proc->res_type, 1); 141 f_print(fout, "*%s, ", result); 142 143 } 144 f_print(fout, "%s%s)\n", addargtype, addargname); 145 } 146 } 147 148 149 150 static const char * 151 ampr(const char *type) 152 { 153 if (isvectordef(type, REL_ALIAS)) 154 return (""); 155 else 156 return ("&"); 157 } 158 159 static void 160 printbody(proc_list *proc) 161 { 162 decl_list *l; 163 bool_t args2 = (proc->arg_num > 1); 164 165 /* 166 * For new style with multiple arguments, need a structure in which 167 * to stuff the arguments. 168 */ 169 170 171 if (newstyle && args2) { 172 f_print(fout, "\t%s", proc->args.argname); 173 f_print(fout, " arg;\n"); 174 } 175 if (!mtflag) { 176 f_print(fout, "\tstatic "); 177 if (streq(proc->res_type, "void")) 178 f_print(fout, "char "); 179 else 180 ptype(proc->res_prefix, proc->res_type, 0); 181 f_print(fout, "%s;\n", RESULT); 182 f_print(fout, "\n"); 183 f_print(fout, "\tmemset((char *)%s%s, 0, sizeof (%s));\n", 184 ampr(proc->res_type), RESULT, RESULT); 185 } 186 if (newstyle && !args2 && 187 (streq(proc->args.decls->decl.type, "void"))) { 188 /* newstyle, 0 arguments */ 189 190 if (mtflag) 191 f_print(fout, "\t return "); 192 else 193 f_print(fout, "\t if "); 194 195 f_print(fout, 196 "(clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_void, ", 197 proc->proc_name); 198 f_print(fout, "(caddr_t) NULL,\n\t\t(xdrproc_t) xdr_%s, " 199 "(caddr_t) %s%s,", stringfix(proc->res_type), 200 (mtflag) ? "" : ampr(proc->res_type), RESULT); 201 202 if (mtflag) 203 f_print(fout, "\n\t\tTIMEOUT));\n"); 204 else 205 f_print(fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n"); 206 207 } else if (newstyle && args2) { 208 /* 209 * Newstyle, multiple arguments 210 * stuff arguments into structure 211 */ 212 for (l = proc->args.decls; l != NULL; l = l->next) { 213 f_print(fout, "\targ.%s = %s;\n", 214 l->decl.name, l->decl.name); 215 } 216 if (mtflag) 217 f_print(fout, "\treturn "); 218 else 219 f_print(fout, "\tif "); 220 f_print(fout, "(clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_%s", 221 proc->proc_name,proc->args.argname); 222 f_print(fout, ", (caddr_t) &arg,\n\t\t(xdrproc_t) xdr_%s, " 223 "(caddr_t) %s%s,", stringfix(proc->res_type), 224 (mtflag) ? "" : ampr(proc->res_type), RESULT); 225 if (mtflag) 226 f_print(fout, "\n\t\tTIMEOUT));\n"); 227 else 228 f_print(fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n"); 229 } else { /* single argument, new or old style */ 230 if (!mtflag) { 231 f_print(fout, "\tif (clnt_call(clnt, %s,\n" 232 "\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n" 233 "\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n" 234 "\t\tTIMEOUT) != RPC_SUCCESS) {\n", 235 proc->proc_name, 236 stringfix(proc->args.decls->decl.type), 237 (newstyle ? "&" : ""), 238 (newstyle) ? proc->args.decls->decl.name : "argp", 239 stringfix(proc->res_type), 240 ampr(proc->res_type), RESULT); 241 } else { 242 f_print(fout, "\treturn (clnt_call(clnt, %s,\n" 243 "\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n" 244 "\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n" 245 "\t\tTIMEOUT));\n", proc->proc_name, 246 stringfix(proc->args.decls->decl.type), 247 (newstyle ? "&" : ""), 248 (newstyle) ? proc->args.decls->decl.name : "argp", 249 stringfix(proc->res_type), "", RESULT); 250 } 251 } 252 if (!mtflag) { 253 f_print(fout, "\t\treturn (NULL);\n"); 254 f_print(fout, "\t}\n"); 255 256 if (streq(proc->res_type, "void")) { 257 f_print(fout, "\treturn ((void *)%s%s);\n", 258 ampr(proc->res_type), RESULT); 259 } else { 260 f_print(fout, "\treturn (%s%s);\n", 261 ampr(proc->res_type), RESULT); 262 } 263 } 264 } 265