1 /* $NetBSD: rpc_clntout.c,v 1.4 1995/06/11 21:49:52 pk Exp $ */ 2 /* 3 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 4 * unrestricted use provided that this legend is included on all tape 5 * media and as a part of the software program in whole or part. Users 6 * may copy or modify Sun RPC without charge, but are not authorized 7 * to license or distribute it to anyone else except as part of a product or 8 * program developed by the user or with the express written consent of 9 * Sun Microsystems, Inc. 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 #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 static write_program __P((definition *)); 47 static void printbody __P((proc_list *)); 48 49 extern pdeclaration(); 50 51 #define DEFAULT_TIMEOUT 25 /* in seconds */ 52 static char RESULT[] = "clnt_res"; 53 54 55 void 56 write_stubs() 57 { 58 list *l; 59 definition *def; 60 61 f_print(fout, 62 "\n/* Default timeout can be changed using clnt_control() */\n"); 63 f_print(fout, "static struct timeval TIMEOUT = { %d, 0 };\n", 64 DEFAULT_TIMEOUT); 65 for (l = defined; l != NULL; l = l->next) { 66 def = (definition *) l->val; 67 if (def->def_kind == DEF_PROGRAM) { 68 write_program(def); 69 } 70 } 71 } 72 73 static 74 write_program(def) 75 definition *def; 76 { 77 version_list *vp; 78 proc_list *proc; 79 80 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) { 81 for (proc = vp->procs; proc != NULL; proc = proc->next) { 82 f_print(fout, "\n"); 83 ptype(proc->res_prefix, proc->res_type, 1); 84 f_print(fout, "*\n"); 85 pvname(proc->proc_name, vp->vers_num); 86 printarglist( proc, "clnt", "CLIENT *" ); 87 f_print(fout, "{\n"); 88 printbody(proc); 89 f_print(fout, "}\n"); 90 } 91 } 92 } 93 94 /* Writes out declarations of procedure's argument list. 95 In either ANSI C style, in one of old rpcgen style (pass by reference), 96 or new rpcgen style (multiple arguments, pass by value); 97 */ 98 99 /* sample addargname = "clnt"; sample addargtype = "CLIENT * " */ 100 101 void printarglist( proc, addargname, addargtype ) 102 proc_list *proc; 103 char *addargname, *addargtype; 104 { 105 106 decl_list *l; 107 108 if (!newstyle) { /* old style: always pass argument by reference */ 109 if (Cflag) { /* C++ style heading */ 110 f_print(fout, "("); 111 ptype(proc->args.decls->decl.prefix, proc->args.decls->decl.type, 1); 112 f_print(fout, "*argp, %s%s)\n", addargtype, addargname ); 113 } else { 114 f_print(fout, "(argp, %s)\n", addargname); 115 f_print(fout, "\t"); 116 ptype(proc->args.decls->decl.prefix, proc->args.decls->decl.type, 1); 117 f_print(fout, "*argp;\n"); 118 } 119 } else if (streq( proc->args.decls->decl.type, "void")) { 120 /* newstyle, 0 argument */ 121 if( Cflag ) 122 f_print(fout, "(%s%s)\n", addargtype, addargname ); 123 else 124 f_print(fout, "(%s)\n", addargname); 125 } else { 126 /* new style, 1 or multiple arguments */ 127 if( !Cflag ) { 128 f_print(fout, "("); 129 for (l = proc->args.decls; l != NULL; l = l->next) 130 f_print(fout, "%s, ", l->decl.name); 131 f_print(fout, "%s)\n", addargname ); 132 for (l = proc->args.decls; l != NULL; l = l->next) { 133 pdeclaration(proc->args.argname, &l->decl, 1, ";\n" ); 134 } 135 } else { /* C++ style header */ 136 f_print(fout, "("); 137 for(l = proc->args.decls; l != NULL; l = l->next) { 138 pdeclaration(proc->args.argname, &l->decl, 0, ", " ); 139 } 140 f_print(fout, " %s%s)\n", addargtype, addargname ); 141 } 142 } 143 144 if( !Cflag ) 145 f_print(fout, "\t%s%s;\n", addargtype, addargname ); 146 } 147 148 149 150 static char * 151 ampr(type) 152 char *type; 153 { 154 if (isvectordef(type, REL_ALIAS)) { 155 return (""); 156 } else { 157 return ("&"); 158 } 159 } 160 161 static void 162 printbody(proc) 163 proc_list *proc; 164 { 165 decl_list *l; 166 bool_t args2 = (proc->arg_num > 1); 167 int i; 168 169 /* For new style with multiple arguments, need a structure in which 170 to stuff the arguments. */ 171 if ( newstyle && args2) { 172 f_print(fout, "\t%s", proc->args.argname); 173 f_print(fout, " arg;\n"); 174 } 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 } 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 if (newstyle && !args2 && (streq( proc->args.decls->decl.type, "void"))) { 186 /* newstyle, 0 arguments */ 187 f_print(fout, 188 "\tif (clnt_call(clnt, %s, xdr_void", proc->proc_name); 189 f_print(fout, 190 ", NULL, xdr_%s, %s,%s, TIMEOUT) != RPC_SUCCESS) {\n", 191 stringfix(proc->res_type), ampr(proc->res_type), RESULT); 192 193 } else if ( newstyle && args2) { 194 /* newstyle, multiple arguments: stuff arguments into structure */ 195 for (l = proc->args.decls; l != NULL; l = l->next) { 196 f_print(fout, "\targ.%s = %s;\n", 197 l->decl.name, l->decl.name); 198 } 199 f_print(fout, 200 "\tif (clnt_call(clnt, %s, xdr_%s", proc->proc_name, 201 proc->args.argname); 202 f_print(fout, 203 ", &arg, xdr_%s, %s%s, TIMEOUT) != RPC_SUCCESS) {\n", 204 stringfix(proc->res_type), 205 ampr(proc->res_type), RESULT); 206 } else { /* single argument, new or old style */ 207 f_print(fout, 208 "\tif (clnt_call(clnt, %s, xdr_%s, %s%s, xdr_%s, %s%s, TIMEOUT) != RPC_SUCCESS) {\n", 209 proc->proc_name, 210 stringfix(proc->args.decls->decl.type), 211 (newstyle ? "&" : ""), 212 (newstyle ? proc->args.decls->decl.name : "argp"), 213 stringfix(proc->res_type), 214 ampr(proc->res_type),RESULT); 215 } 216 f_print(fout, "\t\treturn (NULL);\n"); 217 f_print(fout, "\t}\n"); 218 if (streq(proc->res_type, "void")) { 219 f_print(fout, "\treturn ((void *)%s%s);\n", 220 ampr(proc->res_type),RESULT); 221 } else { 222 f_print(fout, "\treturn (%s%s);\n", ampr(proc->res_type),RESULT); 223 } 224 } 225 226