Annotation of src/usr.bin/rpcgen/rpc_clntout.c, Revision 1.2
1.2 ! deraadt 1: /* $OpenBSD: rpc_clntout.c,v 1.4 1995/06/11 21:49:52 pk 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: #ifndef lint
34: static char sccsid[] = "@(#)rpc_clntout.c 1.11 89/02/22 (C) 1987 SMI";
35: #endif
36:
37: /*
38: * rpc_clntout.c, Client-stub outputter for the RPC protocol compiler
39: * Copyright (C) 1987, Sun Microsytsems, Inc.
40: */
41: #include <stdio.h>
42: #include <string.h>
43: #include <rpc/types.h>
44: #include "rpc_parse.h"
45: #include "rpc_util.h"
46:
47: static write_program __P((definition *));
48: static void printbody __P((proc_list *));
49:
50: extern pdeclaration();
51:
52: #define DEFAULT_TIMEOUT 25 /* in seconds */
53: static char RESULT[] = "clnt_res";
54:
55:
56: void
57: write_stubs()
58: {
59: list *l;
60: definition *def;
61:
62: f_print(fout,
63: "\n/* Default timeout can be changed using clnt_control() */\n");
64: f_print(fout, "static struct timeval TIMEOUT = { %d, 0 };\n",
65: DEFAULT_TIMEOUT);
66: for (l = defined; l != NULL; l = l->next) {
67: def = (definition *) l->val;
68: if (def->def_kind == DEF_PROGRAM) {
69: write_program(def);
70: }
71: }
72: }
73:
74: static
75: write_program(def)
76: definition *def;
77: {
78: version_list *vp;
79: proc_list *proc;
80:
81: for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
82: for (proc = vp->procs; proc != NULL; proc = proc->next) {
83: f_print(fout, "\n");
84: ptype(proc->res_prefix, proc->res_type, 1);
85: f_print(fout, "*\n");
86: pvname(proc->proc_name, vp->vers_num);
87: printarglist( proc, "clnt", "CLIENT *" );
88: f_print(fout, "{\n");
89: printbody(proc);
90: f_print(fout, "}\n");
91: }
92: }
93: }
94:
95: /* Writes out declarations of procedure's argument list.
96: In either ANSI C style, in one of old rpcgen style (pass by reference),
97: or new rpcgen style (multiple arguments, pass by value);
98: */
99:
100: /* sample addargname = "clnt"; sample addargtype = "CLIENT * " */
101:
102: void printarglist( proc, addargname, addargtype )
103: proc_list *proc;
104: char *addargname, *addargtype;
105: {
106:
107: decl_list *l;
108:
109: if (!newstyle) { /* old style: always pass argument by reference */
110: if (Cflag) { /* C++ style heading */
111: f_print(fout, "(");
112: ptype(proc->args.decls->decl.prefix, proc->args.decls->decl.type, 1);
113: f_print(fout, "*argp, %s%s)\n", addargtype, addargname );
114: } else {
115: f_print(fout, "(argp, %s)\n", addargname);
116: f_print(fout, "\t");
117: ptype(proc->args.decls->decl.prefix, proc->args.decls->decl.type, 1);
118: f_print(fout, "*argp;\n");
119: }
120: } else if (streq( proc->args.decls->decl.type, "void")) {
121: /* newstyle, 0 argument */
122: if( Cflag )
123: f_print(fout, "(%s%s)\n", addargtype, addargname );
124: else
125: f_print(fout, "(%s)\n", addargname);
126: } else {
127: /* new style, 1 or multiple arguments */
128: if( !Cflag ) {
129: f_print(fout, "(");
130: for (l = proc->args.decls; l != NULL; l = l->next)
131: f_print(fout, "%s, ", l->decl.name);
132: f_print(fout, "%s)\n", addargname );
133: for (l = proc->args.decls; l != NULL; l = l->next) {
134: pdeclaration(proc->args.argname, &l->decl, 1, ";\n" );
135: }
136: } else { /* C++ style header */
137: f_print(fout, "(");
138: for(l = proc->args.decls; l != NULL; l = l->next) {
139: pdeclaration(proc->args.argname, &l->decl, 0, ", " );
140: }
141: f_print(fout, " %s%s)\n", addargtype, addargname );
142: }
143: }
144:
145: if( !Cflag )
146: f_print(fout, "\t%s%s;\n", addargtype, addargname );
147: }
148:
149:
150:
151: static char *
152: ampr(type)
153: char *type;
154: {
155: if (isvectordef(type, REL_ALIAS)) {
156: return ("");
157: } else {
158: return ("&");
159: }
160: }
161:
162: static void
163: printbody(proc)
164: proc_list *proc;
165: {
166: decl_list *l;
167: bool_t args2 = (proc->arg_num > 1);
168: int i;
169:
170: /* For new style with multiple arguments, need a structure in which
171: to stuff the arguments. */
172: if ( newstyle && args2) {
173: f_print(fout, "\t%s", proc->args.argname);
174: f_print(fout, " arg;\n");
175: }
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: }
182: f_print(fout, "%s;\n",RESULT);
183: f_print(fout, "\n");
184: f_print(fout, "\tmemset((char *)%s%s, 0, sizeof(%s));\n",
185: ampr(proc->res_type ), RESULT, RESULT);
186: if (newstyle && !args2 && (streq( proc->args.decls->decl.type, "void"))) {
187: /* newstyle, 0 arguments */
188: f_print(fout,
189: "\tif (clnt_call(clnt, %s, xdr_void", proc->proc_name);
190: f_print(fout,
191: ", NULL, xdr_%s, %s,%s, TIMEOUT) != RPC_SUCCESS) {\n",
192: stringfix(proc->res_type), ampr(proc->res_type), RESULT);
193:
194: } else if ( newstyle && args2) {
195: /* newstyle, multiple arguments: stuff arguments into structure */
196: for (l = proc->args.decls; l != NULL; l = l->next) {
197: f_print(fout, "\targ.%s = %s;\n",
198: l->decl.name, l->decl.name);
199: }
200: f_print(fout,
201: "\tif (clnt_call(clnt, %s, xdr_%s", proc->proc_name,
202: proc->args.argname);
203: f_print(fout,
204: ", &arg, xdr_%s, %s%s, TIMEOUT) != RPC_SUCCESS) {\n",
205: stringfix(proc->res_type),
206: ampr(proc->res_type), RESULT);
207: } else { /* single argument, new or old style */
208: f_print(fout,
209: "\tif (clnt_call(clnt, %s, xdr_%s, %s%s, xdr_%s, %s%s, TIMEOUT) != RPC_SUCCESS) {\n",
210: proc->proc_name,
211: stringfix(proc->args.decls->decl.type),
212: (newstyle ? "&" : ""),
213: (newstyle ? proc->args.decls->decl.name : "argp"),
214: stringfix(proc->res_type),
215: ampr(proc->res_type),RESULT);
216: }
217: f_print(fout, "\t\treturn (NULL);\n");
218: f_print(fout, "\t}\n");
219: if (streq(proc->res_type, "void")) {
220: f_print(fout, "\treturn ((void *)%s%s);\n",
221: ampr(proc->res_type),RESULT);
222: } else {
223: f_print(fout, "\treturn (%s%s);\n", ampr(proc->res_type),RESULT);
224: }
225: }
226:
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