1 /* $OpenBSD: rpc_clntout.c,v 1.14 2009/10/27 23:59:42 deraadt Exp $ */ 2 /* $NetBSD: rpc_clntout.c,v 1.4 1995/06/11 21:49:52 pk Exp $ */ 3 /* 4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 5 * unrestricted use provided that this legend is included on all tape 6 * media and as a part of the software program in whole or part. Users 7 * may copy or modify Sun RPC without charge, but are not authorized 8 * to license or distribute it to anyone else except as part of a product or 9 * program developed by the user or with the express written consent of 10 * Sun Microsystems, Inc. 11 * 12 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 13 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 14 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 15 * 16 * Sun RPC is provided with no support and without any obligation on the 17 * part of Sun Microsystems, Inc. to assist in its use, correction, 18 * modification or enhancement. 19 * 20 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 21 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 22 * OR ANY PART THEREOF. 23 * 24 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 25 * or profits or other special, indirect and consequential damages, even if 26 * Sun has been advised of the possibility of such damages. 27 * 28 * Sun Microsystems, Inc. 29 * 2550 Garcia Avenue 30 * Mountain View, California 94043 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_util.h" 42 43 static void write_program(definition *); 44 static void printbody(proc_list *); 45 46 #define DEFAULT_TIMEOUT 25 /* in seconds */ 47 static char RESULT[] = "clnt_res"; 48 49 50 void 51 write_stubs() 52 { 53 list *l; 54 definition *def; 55 56 fprintf(fout, 57 "\n/* Default timeout can be changed using clnt_control() */\n"); 58 fprintf(fout, "static struct timeval TIMEOUT = { %d, 0 };\n", 59 DEFAULT_TIMEOUT); 60 for (l = defined; l != NULL; l = l->next) { 61 def = (definition *) l->val; 62 if (def->def_kind == DEF_PROGRAM) { 63 write_program(def); 64 } 65 } 66 } 67 68 static void 69 write_program(def) 70 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 fprintf(fout, "\n"); 78 ptype(proc->res_prefix, proc->res_type, 1); 79 fprintf(fout, "*\n"); 80 pvname(proc->proc_name, vp->vers_num); 81 printarglist(proc, "clnt", "CLIENT *"); 82 fprintf(fout, "{\n"); 83 printbody(proc); 84 fprintf(fout, "}\n"); 85 } 86 } 87 } 88 89 /* 90 * Writes out declarations of procedure's argument list. 91 * In either ANSI C style, in one of old rpcgen style (pass by reference), 92 * or new rpcgen style (multiple arguments, pass by value); 93 */ 94 95 /* sample addargname = "clnt"; sample addargtype = "CLIENT * " */ 96 97 void printarglist(proc, addargname, addargtype) 98 proc_list *proc; 99 char *addargname, *addargtype; 100 { 101 decl_list *l; 102 103 if (!newstyle) { /* old style: always pass argument by reference */ 104 if (Cflag) { /* C++ style heading */ 105 fprintf(fout, "("); 106 ptype(proc->args.decls->decl.prefix, 107 proc->args.decls->decl.type, 1); 108 fprintf(fout, "*argp, %s%s)\n", addargtype, addargname); 109 } else { 110 fprintf(fout, "(argp, %s)\n", addargname); 111 fprintf(fout, "\t"); 112 ptype(proc->args.decls->decl.prefix, 113 proc->args.decls->decl.type, 1); 114 fprintf(fout, "*argp;\n"); 115 } 116 } else if (streq(proc->args.decls->decl.type, "void")) { 117 /* newstyle, 0 argument */ 118 if (Cflag) 119 fprintf(fout, "(%s%s)\n", addargtype, addargname); 120 else 121 fprintf(fout, "(%s)\n", addargname); 122 } else { 123 /* new style, 1 or multiple arguments */ 124 if (!Cflag) { 125 fprintf(fout, "("); 126 for (l = proc->args.decls; l != NULL; l = l->next) 127 fprintf(fout, "%s, ", l->decl.name); 128 fprintf(fout, "%s)\n", addargname); 129 for (l = proc->args.decls; l != NULL; l = l->next) 130 pdeclaration(proc->args.argname, &l->decl, 1, ";\n"); 131 } else { /* C++ style header */ 132 fprintf(fout, "("); 133 for (l = proc->args.decls; l != NULL; l = l->next) 134 pdeclaration(proc->args.argname, &l->decl, 0, ", "); 135 fprintf(fout, " %s%s)\n", addargtype, addargname); 136 } 137 } 138 139 if (!Cflag) 140 fprintf(fout, "\t%s%s;\n", addargtype, addargname); 141 } 142 143 static char * 144 ampr(char *type) 145 { 146 if (isvectordef(type, REL_ALIAS)) { 147 return (""); 148 } else { 149 return ("&"); 150 } 151 } 152 153 static void 154 printbody(proc) 155 proc_list *proc; 156 { 157 decl_list *l; 158 bool_t args2 = (proc->arg_num > 1); 159 160 /* 161 * For new style with multiple arguments, need a structure in which 162 * to stuff the arguments. 163 */ 164 if (newstyle && args2) { 165 fprintf(fout, "\t%s", proc->args.argname); 166 fprintf(fout, " arg;\n"); 167 } 168 fprintf(fout, "\tstatic "); 169 if (streq(proc->res_type, "void")) { 170 fprintf(fout, "char "); 171 } else { 172 ptype(proc->res_prefix, proc->res_type, 0); 173 } 174 fprintf(fout, "%s;\n",RESULT); 175 fprintf(fout, "\n"); 176 fprintf(fout, "\tmemset((char *)%s%s, 0, sizeof(%s));\n", 177 ampr(proc->res_type), RESULT, RESULT); 178 if (newstyle && !args2 && (streq(proc->args.decls->decl.type, "void"))) { 179 /* newstyle, 0 arguments */ 180 fprintf(fout, 181 "\tif (clnt_call(clnt, %s, xdr_void", proc->proc_name); 182 fprintf(fout, 183 ", NULL, xdr_%s, %s%s, TIMEOUT) != RPC_SUCCESS) {\n", 184 stringfix(proc->res_type), ampr(proc->res_type), RESULT); 185 } else if (newstyle && args2) { 186 /* newstyle, multiple arguments: stuff arguments into structure */ 187 for (l = proc->args.decls; l != NULL; l = l->next) { 188 fprintf(fout, "\targ.%s = %s;\n", 189 l->decl.name, l->decl.name); 190 } 191 fprintf(fout, 192 "\tif (clnt_call(clnt, %s, xdr_%s", proc->proc_name, 193 proc->args.argname); 194 fprintf(fout, 195 ", &arg, xdr_%s, %s%s, TIMEOUT) != RPC_SUCCESS) {\n", 196 stringfix(proc->res_type), 197 ampr(proc->res_type), RESULT); 198 } else { /* single argument, new or old style */ 199 fprintf(fout, 200 "\tif (clnt_call(clnt, %s, xdr_%s, %s%s, xdr_%s, " 201 "%s%s, TIMEOUT) != RPC_SUCCESS) {\n", 202 proc->proc_name, 203 stringfix(proc->args.decls->decl.type), 204 (newstyle ? "&" : ""), 205 (newstyle ? proc->args.decls->decl.name : "argp"), 206 stringfix(proc->res_type), 207 ampr(proc->res_type),RESULT); 208 } 209 fprintf(fout, "\t\treturn (NULL);\n"); 210 fprintf(fout, "\t}\n"); 211 if (streq(proc->res_type, "void")) { 212 fprintf(fout, "\treturn ((void *)%s%s);\n", 213 ampr(proc->res_type),RESULT); 214 } else { 215 fprintf(fout, "\treturn (%s%s);\n", ampr(proc->res_type),RESULT); 216 } 217 } 218 219