NetBSD/usr.bin/rpcgen/rpc_cout.c

726 lines
17 KiB
C

/* $NetBSD: rpc_cout.c,v 1.38 2016/01/23 02:33:09 dholland Exp $ */
/*
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
* unrestricted use provided that this legend is included on all tape
* media and as a part of the software program in whole or part. Users
* may copy or modify Sun RPC without charge, but are not authorized
* to license or distribute it to anyone else except as part of a product or
* program developed by the user or with the express written consent of
* Sun Microsystems, Inc.
*
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
*
* Sun RPC is provided with no support and without any obligation on the
* part of Sun Microsystems, Inc. to assist in its use, correction,
* modification or enhancement.
*
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
* OR ANY PART THEREOF.
*
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
* or profits or other special, indirect and consequential damages, even if
* Sun has been advised of the possibility of such damages.
*
* Sun Microsystems, Inc.
* 2550 Garcia Avenue
* Mountain View, California 94043
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
#if defined(__RCSID) && !defined(lint)
#if 0
static char sccsid[] = "@(#)rpc_cout.c 1.13 89/02/22 (C) 1987 SMI";
#else
__RCSID("$NetBSD: rpc_cout.c,v 1.38 2016/01/23 02:33:09 dholland Exp $");
#endif
#endif
/*
* rpc_cout.c, XDR routine outputter for the RPC protocol compiler
*/
#include <ctype.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "rpc_scan.h"
#include "rpc_parse.h"
#include "rpc_util.h"
static int findtype(definition *, const char *);
static int undefined(const char *);
static void print_generic_header(const char *, int);
static void print_header(definition *);
static void print_prog_header(proc_list *);
static void print_trailer(void);
static void print_ifopen(int, const char *);
static void print_ifarg(const char *);
static void print_ifsizeof(const char *, const char *);
static void print_ifclose(int);
static void print_ifstat(int, const char *, const char *, relation,
const char *, const char *, const char *);
static void emit_enum(definition *);
static void emit_program(definition *);
static void emit_union(definition *);
static void emit_struct(definition *);
static void emit_typedef(definition *);
static void print_stat(int, declaration *);
/*
* Emit the C-routine for the given definition
*/
void
emit(definition *def)
{
if (def->def_kind == DEF_CONST) {
return;
}
if (def->def_kind == DEF_PROGRAM) {
emit_program(def);
return;
}
if (def->def_kind == DEF_TYPEDEF) {
/* now we need to handle declarations like struct typedef foo
* foo; since we dont want this to be expanded into 2 calls to
* xdr_foo */
if (strcmp(def->def.ty.old_type, def->def_name) == 0)
return;
};
print_header(def);
switch (def->def_kind) {
case DEF_UNION:
emit_union(def);
break;
case DEF_ENUM:
emit_enum(def);
break;
case DEF_STRUCT:
emit_struct(def);
break;
case DEF_TYPEDEF:
emit_typedef(def);
break;
case DEF_PROGRAM:
case DEF_CONST:
errx(1, "Internal error at %s:%d: Case %d not handled",
__FILE__, __LINE__, def->def_kind);
break;
}
print_trailer();
}
static int
findtype(definition *def, const char *type)
{
if (def->def_kind == DEF_PROGRAM || def->def_kind == DEF_CONST) {
return (0);
} else {
return (streq(def->def_name, type));
}
}
static int
undefined(const char *type)
{
definition *def;
def = (definition *) FINDVAL(defined, type, findtype);
return (def == NULL);
}
static void
print_generic_header(const char *procname, int pointerp)
{
f_print(fout, "\n");
f_print(fout, "bool_t\n");
f_print(fout, "xdr_%s(", procname);
f_print(fout, "XDR *xdrs, ");
f_print(fout, "%s ", procname);
if (pointerp)
f_print(fout, "*");
f_print(fout, "objp)\n{\n");
}
static void
print_header(definition *def)
{
print_generic_header(def->def_name,
def->def_kind != DEF_TYPEDEF ||
!isvectordef(def->def.ty.old_type, def->def.ty.rel));
}
static void
print_prog_header(proc_list *plist)
{
print_generic_header(plist->args.argname, 1);
}
static void
print_trailer(void)
{
f_print(fout, "\treturn (TRUE);\n");
f_print(fout, "}\n");
}
static void
print_ifopen(int indent, const char *name)
{
char _t_kludge[32];
/*
* XXX Solaris seems to strip the _t. No idea why.
*/
if (!strcmp(name, "rpcprog_t") || !strcmp(name, "rpcvers_t") ||
!strcmp(name, "rpcproc_t") || !strcmp(name, "rpcprot_t") ||
!strcmp(name, "rpcport_t") || !strcmp(name, "rpcpinline_t")) {
strncpy(_t_kludge, name, strlen(name) - 2);
name = _t_kludge;
}
tabify(fout, indent);
f_print(fout, "if (!xdr_%s(xdrs", name);
}
static void
print_ifarg(const char *arg)
{
f_print(fout, ", %s", arg);
}
static void
print_ifsizeof(const char *prefix, const char *type)
{
if (streq(type, "bool")) {
f_print(fout, ", (unsigned int)sizeof(bool_t), (xdrproc_t)xdr_bool");
} else {
f_print(fout, ", (unsigned int)sizeof(");
if (undefined(type) && prefix) {
f_print(fout, "%s ", prefix);
}
f_print(fout, "%s), (xdrproc_t)xdr_%s", type, type);
}
}
static void
print_ifclose(int indent)
{
f_print(fout, "))\n");
tabify(fout, indent);
f_print(fout, "\treturn (FALSE);\n");
}
static void
print_ifstat(int indent, const char *prefix, const char *type, relation rel,
const char *amax, const char *objname, const char *name)
{
const char *alt = NULL;
switch (rel) {
case REL_POINTER:
print_ifopen(indent, "pointer");
print_ifarg("(char **)(void *)");
f_print(fout, "%s", objname);
print_ifsizeof(prefix, type);
break;
case REL_VECTOR:
if (streq(type, "string")) {
alt = "string";
} else
if (streq(type, "opaque")) {
alt = "opaque";
}
if (alt) {
print_ifopen(indent, alt);
print_ifarg(objname);
} else {
print_ifopen(indent, "vector");
print_ifarg("(char *)(void *)");
f_print(fout, "%s", objname);
}
print_ifarg(amax);
if (!alt) {
print_ifsizeof(prefix, type);
}
break;
case REL_ARRAY:
if (streq(type, "string")) {
alt = "string";
} else
if (streq(type, "opaque")) {
alt = "bytes";
}
if (streq(type, "string")) {
print_ifopen(indent, alt);
print_ifarg(objname);
} else {
if (alt) {
print_ifopen(indent, alt);
} else {
print_ifopen(indent, "array");
}
print_ifarg("(char **)(void *)");
if (*objname == '&') {
f_print(fout, "%s.%s_val, (unsigned int *)%s.%s_len",
objname, name, objname, name);
} else {
f_print(fout, "&%s->%s_val, (unsigned int *)&%s->%s_len",
objname, name, objname, name);
}
}
print_ifarg(amax);
if (!alt) {
print_ifsizeof(prefix, type);
}
break;
case REL_ALIAS:
print_ifopen(indent, type);
print_ifarg(objname);
break;
}
print_ifclose(indent);
}
/* ARGSUSED */
static void
emit_enum(definition *def)
{
tabify(fout, 1);
f_print(fout, "{\n");
tabify(fout, 2);
f_print(fout, "enum_t et = (enum_t)*objp;\n");
print_ifopen(2, "enum");
print_ifarg("&et");
print_ifclose(2);
tabify(fout, 2);
f_print(fout, "*objp = (%s)et;\n", def->def_name);
tabify(fout, 1);
f_print(fout, "}\n");
}
static void
emit_program(definition *def)
{
decl_list *dl;
version_list *vlist;
proc_list *plist;
for (vlist = def->def.pr.versions; vlist != NULL; vlist = vlist->next)
for (plist = vlist->procs; plist != NULL; plist = plist->next) {
if (!newstyle || plist->arg_num < 2)
continue; /* old style, or single
* argument */
print_prog_header(plist);
for (dl = plist->args.decls; dl != NULL;
dl = dl->next)
print_stat(1, &dl->decl);
print_trailer();
}
}
static void
emit_union(definition *def)
{
declaration *dflt;
case_list *cl;
declaration *cs;
char *object;
static const char vecformat[] = "objp->%s_u.%s";
static const char format[] = "&objp->%s_u.%s";
f_print(fout, "\n");
print_stat(1, &def->def.un.enum_decl);
f_print(fout, "\tswitch (objp->%s) {\n", def->def.un.enum_decl.name);
for (cl = def->def.un.cases; cl != NULL; cl = cl->next) {
f_print(fout, "\tcase %s:\n", cl->case_name);
if (cl->contflag == 1) /* a continued case statement */
continue;
cs = &cl->case_decl;
if (!streq(cs->type, "void")) {
object = alloc(strlen(def->def_name) + strlen(format) +
strlen(cs->name) + 1);
if (isvectordef(cs->type, cs->rel)) {
s_print(object, vecformat, def->def_name,
cs->name);
} else {
s_print(object, format, def->def_name,
cs->name);
}
print_ifstat(2, cs->prefix, cs->type, cs->rel,
cs->array_max, object, cs->name);
free(object);
}
f_print(fout, "\t\tbreak;\n");
}
dflt = def->def.un.default_decl;
f_print(fout, "\tdefault:\n");
if (dflt != NULL) {
if (!streq(dflt->type, "void")) {
object = alloc(strlen(def->def_name) + strlen(format) +
strlen(dflt->name) + 1);
if (isvectordef(dflt->type, dflt->rel)) {
s_print(object, vecformat, def->def_name,
dflt->name);
} else {
s_print(object, format, def->def_name,
dflt->name);
}
print_ifstat(2, dflt->prefix, dflt->type, dflt->rel,
dflt->array_max, object, dflt->name);
free(object);
}
f_print(fout, "\t\tbreak;\n");
} else {
f_print(fout, "\t\treturn (FALSE);\n");
}
f_print(fout, "\t}\n");
}
static void
emit_struct(definition *def)
{
decl_list *dl;
int i, j, size, flag;
decl_list *cur = NULL, *psav;
bas_type *ptr;
char *sizestr;
const char *plus;
char ptemp[256];
int can_inline;
if (doinline == 0) {
f_print(fout, "\n");
for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
print_stat(1, &dl->decl);
return;
}
size = 0;
can_inline = 0;
for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
if ((dl->decl.prefix == NULL) &&
((ptr = find_type(dl->decl.type)) != NULL) &&
((dl->decl.rel == REL_ALIAS) || (dl->decl.rel == REL_VECTOR))) {
if (dl->decl.rel == REL_ALIAS)
size += ptr->length;
else {
can_inline = 1;
break; /* can be inlined */
};
} else {
if (size >= doinline) {
can_inline = 1;
break; /* can be inlined */
}
size = 0;
}
if (size > doinline)
can_inline = 1;
if (can_inline == 0) { /* can not inline, drop back to old mode */
f_print(fout, "\n");
for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
print_stat(1, &dl->decl);
return;
};
/* May cause lint to complain. but ... */
f_print(fout, "\tint32_t *buf;\n");
flag = PUT;
f_print(fout, "\n\tif (xdrs->x_op == XDR_ENCODE) {\n");
for (j = 0; j < 2; j++) {
i = 0;
size = 0;
sizestr = NULL;
for (dl = def->def.st.decls; dl != NULL; dl = dl->next) { /* xxx */
/* now walk down the list and check for basic types */
if ((dl->decl.prefix == NULL) && ((ptr = find_type(dl->decl.type)) != NULL) && ((dl->decl.rel == REL_ALIAS) || (dl->decl.rel == REL_VECTOR))) {
if (i == 0)
cur = dl;
i++;
if (dl->decl.rel == REL_ALIAS)
size += ptr->length;
else {
/* this is required to handle arrays */
if (sizestr == NULL)
plus = "";
else
plus = " + ";
if (ptr->length != 1)
s_print(ptemp, "%s%s * %d", plus, dl->decl.array_max, ptr->length);
else
s_print(ptemp, "%s%s", plus, dl->decl.array_max);
/* now concatenate to sizestr !!!! */
if (sizestr == NULL)
sizestr = strdup(ptemp);
else {
char *nsizestr;
nsizestr = realloc(sizestr, strlen(sizestr) + strlen(ptemp) + 1);
if (nsizestr == NULL) {
err(EXIT_FAILURE, "realloc");
}
sizestr = nsizestr;
sizestr = strcat(sizestr, ptemp); /* build up length of
* array */
}
}
} else {
if (i > 0) {
if (sizestr == NULL && size < doinline) {
/* don't expand into inline
* code if size < doinline */
while (cur != dl) {
print_stat(2, &cur->decl);
cur = cur->next;
}
} else {
/* were already looking at a
* xdr_inlineable structure */
if (sizestr == NULL)
f_print(fout, "\t\tbuf = (int32_t *)XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);\n",
size);
else
if (size == 0)
f_print(fout,
"\t\tbuf = (int32_t *)XDR_INLINE(xdrs, %s * BYTES_PER_XDR_UNIT);\n",
sizestr);
else
f_print(fout,
"\t\tbuf = (int32_t *)XDR_INLINE(xdrs, (%d + %s) * BYTES_PER_XDR_UNIT);\n",
size, sizestr);
f_print(fout, "\t\tif (buf == NULL) {\n");
psav = cur;
while (cur != dl) {
print_stat(3, &cur->decl);
cur = cur->next;
}
f_print(fout, "\t\t} else {\n");
cur = psav;
while (cur != dl) {
emit_inline(&cur->decl, flag);
cur = cur->next;
}
f_print(fout, "\t\t}\n");
}
}
size = 0;
i = 0;
if (sizestr) {
free(sizestr);
sizestr = NULL;
}
print_stat(2, &dl->decl);
}
}
if (i > 0) {
if (sizestr == NULL && size < doinline) {
/* don't expand into inline code if size <
* doinline */
while (cur != dl) {
print_stat(2, &cur->decl);
cur = cur->next;
}
} else {
/* were already looking at a xdr_inlineable
* structure */
if (sizestr == NULL)
f_print(fout, "\t\tbuf = (int32_t *)XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);\n",
size);
else
if (size == 0)
f_print(fout,
"\t\tbuf = (int32_t *)XDR_INLINE(xdrs, %s * BYTES_PER_XDR_UNIT);\n",
sizestr);
else
f_print(fout,
"\t\tbuf = (int32_t *)XDR_INLINE(xdrs, (%d + %s) * BYTES_PER_XDR_UNIT);\n",
size, sizestr);
f_print(fout, "\t\tif (buf == NULL) {\n");
psav = cur;
while (cur != NULL) {
print_stat(3, &cur->decl);
cur = cur->next;
}
f_print(fout, "\t\t} else {\n");
cur = psav;
while (cur != dl) {
emit_inline(&cur->decl, flag);
cur = cur->next;
}
f_print(fout, "\t\t}\n");
}
}
if (flag == PUT) {
flag = GET;
f_print(fout, "\t} else if (xdrs->x_op == XDR_DECODE) {\n");
}
}
f_print(fout, "\t} else {\n");
/* now take care of XDR_FREE case */
for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
print_stat(2, &dl->decl);
f_print(fout, "\t}\n");
}
static void
emit_typedef(definition *def)
{
const char *prefix = def->def.ty.old_prefix;
const char *type = def->def.ty.old_type;
const char *amax = def->def.ty.array_max;
relation rel = def->def.ty.rel;
f_print(fout, "\n");
print_ifstat(1, prefix, type, rel, amax, "objp", def->def_name);
}
static void
print_stat(int indent, declaration *dec)
{
const char *prefix = dec->prefix;
const char *type = dec->type;
const char *amax = dec->array_max;
relation rel = dec->rel;
char name[256];
if (isvectordef(type, rel)) {
s_print(name, "objp->%s", dec->name);
} else {
s_print(name, "&objp->%s", dec->name);
}
print_ifstat(indent, prefix, type, rel, amax, name, dec->name);
}
void
emit_inline(declaration *decl, int flag)
{
/*check whether an array or not */
switch (decl->rel) {
case REL_ALIAS:
emit_single_in_line(decl, flag, REL_ALIAS);
break;
case REL_VECTOR:
f_print(fout, "\t\t\t{\n");
f_print(fout, "\t\t\t\tint i;\n");
f_print(fout, "\t\t\t\t%s *genp;\n", decl->type);
f_print(fout, "\n");
f_print(fout, "\t\t\t\tfor (i = 0, genp = objp->%s;\n",
decl->name);
f_print(fout, "\t\t\t\t i < %s; i++) {\n\t\t",
decl->array_max);
emit_single_in_line(decl, flag, REL_VECTOR);
f_print(fout, "\t\t\t\t}\n\t\t\t}\n");
break;
case REL_ARRAY:
case REL_POINTER:
errx(1, "Internal error at %s:%d: Case %d not handled",
__FILE__, __LINE__, decl->rel);
}
}
void
emit_single_in_line(declaration *decl, int flag, relation rel)
{
const char *upp_case;
char *freeable;
int freed = 0;
if (flag == PUT)
f_print(fout, "\t\t\tIXDR_PUT_");
else
if (rel == REL_ALIAS)
f_print(fout, "\t\t\tobjp->%s = IXDR_GET_", decl->name);
else
f_print(fout, "\t\t\t*genp++ = IXDR_GET_");
upp_case = freeable = upcase(decl->type);
/* hack - XX */
if (strcmp(upp_case, "INT") == 0) {
free(freeable);
freed = 1;
upp_case = "INT32";
} else if (strcmp(upp_case, "U_INT") == 0) {
free(freeable);
freed = 1;
upp_case = "U_INT32";
}
if (flag == PUT) {
if (rel == REL_ALIAS)
f_print(fout, "%s(buf, objp->%s);\n", upp_case, decl->name);
else
f_print(fout, "%s(buf, *genp++);\n", upp_case);
} else
f_print(fout, "%s(buf);\n", upp_case);
if (!freed)
free(freeable);
}
char *
upcase(const char *str)
{
char *ptr, *hptr;
ptr = malloc(strlen(str) + 1);
if (ptr == NULL) {
errx(EXIT_FAILURE, "Out of memory");
}
hptr = ptr;
while (*str != '\0')
*ptr++ = toupper((unsigned char)*str++);
*ptr = '\0';
return (hptr);
}