Annotation of src/usr.bin/rpcgen/rpc_clntout.c, Revision 1.14
1.14 ! deraadt 1: /* $OpenBSD: rpc_clntout.c,v 1.13 2007/10/03 14:35:48 weingart Exp $ */
1.1 deraadt 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:
1.9 millert 43: static void write_program(definition *);
44: static void printbody(proc_list *);
1.1 deraadt 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:
1.10 deraadt 56: fprintf(fout,
1.1 deraadt 57: "\n/* Default timeout can be changed using clnt_control() */\n");
1.10 deraadt 58: fprintf(fout, "static struct timeval TIMEOUT = { %d, 0 };\n",
1.1 deraadt 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:
1.8 deraadt 68: static void
1.1 deraadt 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) {
1.10 deraadt 77: fprintf(fout, "\n");
1.1 deraadt 78: ptype(proc->res_prefix, proc->res_type, 1);
1.10 deraadt 79: fprintf(fout, "*\n");
1.1 deraadt 80: pvname(proc->proc_name, vp->vers_num);
1.11 deraadt 81: printarglist(proc, "clnt", "CLIENT *");
1.10 deraadt 82: fprintf(fout, "{\n");
1.1 deraadt 83: printbody(proc);
1.10 deraadt 84: fprintf(fout, "}\n");
1.1 deraadt 85: }
86: }
87: }
88:
1.11 deraadt 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: */
1.1 deraadt 94:
95: /* sample addargname = "clnt"; sample addargtype = "CLIENT * " */
96:
1.11 deraadt 97: void printarglist(proc, addargname, addargtype)
98: proc_list *proc;
99: char *addargname, *addargtype;
1.1 deraadt 100: {
1.11 deraadt 101: decl_list *l;
1.1 deraadt 102:
1.11 deraadt 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: }
1.1 deraadt 138:
1.11 deraadt 139: if (!Cflag)
140: fprintf(fout, "\t%s%s;\n", addargtype, addargname);
1.1 deraadt 141: }
142:
143: static char *
1.12 deraadt 144: ampr(char *type)
1.1 deraadt 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: {
1.11 deraadt 157: decl_list *l;
158: bool_t args2 = (proc->arg_num > 1);
1.1 deraadt 159:
1.11 deraadt 160: /*
161: * For new style with multiple arguments, need a structure in which
162: * to stuff the arguments.
163: */
164: if (newstyle && args2) {
1.10 deraadt 165: fprintf(fout, "\t%s", proc->args.argname);
166: fprintf(fout, " arg;\n");
1.1 deraadt 167: }
1.10 deraadt 168: fprintf(fout, "\tstatic ");
1.1 deraadt 169: if (streq(proc->res_type, "void")) {
1.10 deraadt 170: fprintf(fout, "char ");
1.1 deraadt 171: } else {
172: ptype(proc->res_prefix, proc->res_type, 0);
173: }
1.10 deraadt 174: fprintf(fout, "%s;\n",RESULT);
175: fprintf(fout, "\n");
1.11 deraadt 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,
1.1 deraadt 181: "\tif (clnt_call(clnt, %s, xdr_void", proc->proc_name);
1.11 deraadt 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);
1.1 deraadt 198: } else { /* single argument, new or old style */
1.11 deraadt 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: }
1.10 deraadt 209: fprintf(fout, "\t\treturn (NULL);\n");
210: fprintf(fout, "\t}\n");
1.1 deraadt 211: if (streq(proc->res_type, "void")) {
1.10 deraadt 212: fprintf(fout, "\treturn ((void *)%s%s);\n",
1.11 deraadt 213: ampr(proc->res_type),RESULT);
1.1 deraadt 214: } else {
1.10 deraadt 215: fprintf(fout, "\treturn (%s%s);\n", ampr(proc->res_type),RESULT);
1.1 deraadt 216: }
217: }
218:
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