OpenSolaris_b135/cmd/rpcgen/rpc_svcout.c
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* University Copyright- Copyright (c) 1982, 1986, 1988
* The Regents of the University of California
* All Rights Reserved
*
* University Acknowledgment- Portions of this document are derived from
* software developed by the University of California, Berkeley, and its
* contributors.
*/
/*
* rpc_svcout.c, Server-skeleton outputter for the RPC protocol compiler
*/
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include "rpc_parse.h"
#include "rpc_util.h"
extern int nullproc(proc_list *);
static char RQSTP[] = "rqstp";
static char TRANSP[] = "transp";
static char ARG[] = "argument";
static char RESULT[] = "result";
static char ROUTINE[] = "local";
static char RETVAL[] = "retval";
#define ERRBUFLEN 256
static void internal_proctype(proc_list *);
static void write_real_program(definition *);
static void write_programs(char *);
static void write_program(definition *, char *);
static void printerr(char *, char *);
static void write_svc_aux(int);
static void printif(char *, char *, char *, char *);
static void write_inetmost(char *);
static void print_return(char *);
static void print_pmapunset(char *);
static void print_err_message(const char *, const char *, ...);
static void write_msg_out(void);
static void write_timeout_func(void);
static void write_pm_most(char *, int);
static void write_rpc_svc_fg(char *, char *);
static void open_log_file(char *, char *);
static void
p_xdrfunc(char *rname, char *typename)
{
if (Cflag) {
f_print(fout, "\t\t_xdr_%s = (xdrproc_t)\n", rname);
f_print(fout, "\t\t xdr_%s;\n", stringfix(typename));
} else {
f_print(fout, "\t\t_xdr_%s = xdr_%s;\n",
rname, stringfix(typename));
}
}
static void
internal_proctype(proc_list *plist)
{
f_print(fout, "static ");
ptype(plist->res_prefix, plist->res_type, 1);
f_print(fout, "*");
}
static void
write_mtauto(void)
{
f_print(fout, "\tif (!rpc_control(RPC_SVC_MTMODE_SET, &mode)) {\n");
print_err_message("\t\t", "unable to set automatic MT mode.");
f_print(fout, "\t\texit(1);\n\t}\n");
}
/*
* write most of the service, that is, everything but the registrations.
*/
void
write_most(char *infile, int netflag, int nomain)
{
if (inetdflag || pmflag) {
char *var_type;
var_type = (nomain? "extern" : "static");
f_print(fout, "%s int _rpcpmstart;", var_type);
f_print(fout, "\t\t/* Started by a port monitor ? */\n");
if (!tirpcflag) {
f_print(fout, "%s int _rpcfdtype;", var_type);
f_print(fout,
"\t\t /* Whether Stream or Datagram ? */\n");
}
if (timerflag) {
f_print(fout,
"\n/* States a server can be in wrt request */\n\n");
f_print(fout, "#define\t_IDLE 0\n");
f_print(fout, "#define\t_SERVED 1\n\n");
if (nomain) {
f_print(fout,
"/* LINTED static unused if no main */\n");
}
f_print(fout,
"static int _rpcsvcstate = _IDLE;");
f_print(fout,
"\t/* Set when a request is serviced */\n");
f_print(fout, "static int _rpcsvccount = 0;");
f_print(fout,
"\t\t/* Number of requests being serviced */\n");
if (mtflag) {
f_print(fout, "mutex_t _svcstate_lock;");
f_print(fout,
"\t\t/* lock for _rpcsvcstate, _rpcsvccount */\n");
}
}
write_svc_aux(nomain);
}
/* write out dispatcher and stubs */
write_programs(nomain ? NULL : "static");
if (nomain)
return;
f_print(fout, "\nint\nmain()\n");
f_print(fout, "{\n");
if (inetdflag) {
write_inetmost(infile);
/* Includes call to write_rpc_svc_fg() */
} else {
if (tirpcflag) {
if (netflag) {
f_print(fout,
"\tregister SVCXPRT *%s;\n", TRANSP);
f_print(fout,
"\tstruct netconfig *nconf = NULL;\n");
}
f_print(fout, "\tpid_t pid;\n");
f_print(fout, "\tint i;\n");
if (mtauto) {
f_print(fout,
"\tint mode = RPC_SVC_MT_AUTO;\n\n");
write_mtauto();
} else
f_print(fout, "\n");
if (mtflag & timerflag)
f_print(fout,
"\tmutex_init(&_svcstate_lock, USYNC_THREAD, NULL);\n");
write_pm_most(infile, netflag);
f_print(fout, "\telse {\n");
write_rpc_svc_fg(infile, "\t\t");
f_print(fout, "\t}\n");
} else {
f_print(fout, "\tregister SVCXPRT *%s;\n", TRANSP);
f_print(fout, "\n");
print_pmapunset("\t");
}
}
if (logflag && !inetdflag) {
open_log_file(infile, "\t");
}
}
/*
* write a registration for the given transport
*/
void
write_netid_register(char *transp)
{
list *l;
definition *def;
version_list *vp;
char *sp;
char tmpbuf[32];
sp = "";
f_print(fout, "\n");
f_print(fout, "%s\tnconf = getnetconfigent(\"%s\");\n", sp, transp);
f_print(fout, "%s\tif (nconf == NULL) {\n", sp);
(void) snprintf(tmpbuf, sizeof (tmpbuf), "%s\t\t", sp);
print_err_message(tmpbuf, "cannot find %s netid.", transp);
f_print(fout, "%s\t\texit(1);\n", sp);
f_print(fout, "%s\t}\n", sp);
f_print(fout, "%s\t%s = svc_tli_create(RPC_ANYFD, nconf, 0, 0, 0);\n",
sp, TRANSP);
f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP);
print_err_message(tmpbuf, "cannot create %s service.", transp);
f_print(fout, "%s\t\texit(1);\n", sp);
f_print(fout, "%s\t}\n", sp);
for (l = defined; l != NULL; l = l->next) {
def = (definition *) l->val;
if (def->def_kind != DEF_PROGRAM) {
continue;
}
for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
f_print(fout,
"%s\t(void) rpcb_unset(%s, %s, nconf);\n",
sp, def->def_name, vp->vers_name);
f_print(fout,
"%s\tif (!svc_reg(%s, %s, %s, ",
sp, TRANSP, def->def_name, vp->vers_name);
pvname(def->def_name, vp->vers_num);
f_print(fout, ", nconf)) {\n");
print_err_message(tmpbuf,
"unable to register (%s, %s, %s).",
def->def_name, vp->vers_name, transp);
f_print(fout, "%s\t\texit(1);\n", sp);
f_print(fout, "%s\t}\n", sp);
}
}
f_print(fout, "%s\tfreenetconfigent(nconf);\n", sp);
}
/*
* write a registration for the given transport for TLI
*/
void
write_nettype_register(char *transp)
{
list *l;
definition *def;
version_list *vp;
for (l = defined; l != NULL; l = l->next) {
def = (definition *) l->val;
if (def->def_kind != DEF_PROGRAM) {
continue;
}
for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
f_print(fout, "\tif (!svc_create(\n");
f_print(fout, "\t ");
pvname(def->def_name, vp->vers_num);
f_print(fout, ", %s, %s,\n",
def->def_name, vp->vers_name);
f_print(fout, "\t \"%s\")) {\n", transp);
print_err_message("\t\t",
"unable to create (%s, %s) for %s.",
def->def_name, vp->vers_name, transp);
f_print(fout, "\t\texit(1);\n");
f_print(fout, "\t}\n");
}
}
}
/*
* write the rest of the service
*/
void
write_rest(void)
{
f_print(fout, "\n");
if (inetdflag) {
f_print(fout, "\tif (%s == (SVCXPRT *)NULL) {\n", TRANSP);
print_err_message("\t\t", "could not create a handle");
f_print(fout, "\t\texit(1);\n");
f_print(fout, "\t}\n");
if (timerflag) {
f_print(fout, "\tif (_rpcpmstart) {\n");
if (mtflag) {
f_print(fout,
"\t\tif (thr_create(NULL, 0, closedown, NULL, 0, NULL) != 0) {\n");
print_err_message("\t\t\t",
"cannot create closedown thread");
f_print(fout, "\t\t\texit(1);\n");
f_print(fout, "\t\t}\n");
f_print(fout, "\t}\n");
} else {
f_print(fout,
"\t\t(void) signal(SIGALRM, %s closedown);\n",
Cflag? "(SIG_PF)":"(void(*)())");
f_print(fout,
"\t\t(void) alarm(_RPCSVC_CLOSEDOWN/2);\n");
f_print(fout, "\t}\n");
}
}
}
f_print(fout, "\tsvc_run();\n");
print_err_message("\t", "svc_run returned");
f_print(fout, "\texit(1);\n");
f_print(fout, "\t/* NOTREACHED */\n");
f_print(fout, "}\n");
}
static void
write_programs(char *storage)
{
list *l;
definition *def;
/* write out stubs for procedure definitions */
for (l = defined; l != NULL; l = l->next) {
def = (definition *) l->val;
if (def->def_kind == DEF_PROGRAM)
write_real_program(def);
}
/* write out dispatcher for each program */
for (l = defined; l != NULL; l = l->next) {
def = (definition *) l->val;
if (def->def_kind == DEF_PROGRAM)
write_program(def, storage);
}
}
/*
* write out definition of internal function (e.g. _printmsg_1(...))
* which calls server's defintion of actual function (e.g. printmsg_1(...)).
* Unpacks single user argument of printmsg_1 to call-by-value format
* expected by printmsg_1.
*/
static void
write_real_program(definition *def)
{
version_list *vp;
proc_list *proc;
decl_list *l;
if (!newstyle)
return; /* not needed for old style */
for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
for (proc = vp->procs; proc != NULL; proc = proc->next) {
int oneway = streq(proc->res_type, "oneway");
f_print(fout, "\n");
if (proc->arg_num < 2 &&
streq(proc->args.decls->decl.type, "void")) {
f_print(fout, "/* ARGSUSED */\n");
}
if (!mtflag)
internal_proctype(proc);
else
f_print(fout, "int");
f_print(fout, "\n_");
pvname(proc->proc_name, vp->vers_num);
if (Cflag) {
f_print(fout, "(\n");
f_print(fout, " ");
/* arg name */
if (proc->arg_num > 1)
/* LINTED variable format */
f_print(fout, proc->args.argname);
else
ptype(proc->args.decls->decl.prefix,
proc->args.decls->decl.type, 0);
f_print(fout, " *argp,\n");
if (mtflag) {
f_print(fout, " ");
ptype(proc->res_prefix,
proc->res_type, 1);
f_print(fout, "*%s,\n", RESULT);
}
f_print(fout, " struct svc_req *%s)\n",
RQSTP);
} else {
if (mtflag)
f_print(fout, "(argp, %s, %s)\n",
RESULT, RQSTP);
else
f_print(fout, "(argp, %s)\n", RQSTP);
/* arg name */
if (proc->arg_num > 1)
f_print(fout, "\t%s *argp;\n",
proc->args.argname);
else {
f_print(fout, "\t");
ptype(proc->args.decls->decl.prefix,
proc->args.decls->decl.type, 0);
f_print(fout, " *argp;\n");
}
if (mtflag)
f_print(fout, "\tvoid *%s;\n", RESULT);
f_print(fout, "\tstruct svc_req *%s;\n", RQSTP);
}
f_print(fout, "{\n");
f_print(fout, "\treturn (");
/* for mtflag, arguments are different */
if (Cflag || mtflag)
pvname_svc(proc->proc_name, vp->vers_num);
else
pvname(proc->proc_name, vp->vers_num);
f_print(fout, "(");
if (proc->arg_num < 2) { /* single argument */
/* only print if non-void */
if (!streq(proc->args.decls->decl.type, "void"))
f_print(fout, "*argp, ");
} else {
f_print(fout, "\n");
for (l = proc->args.decls; l != NULL;
l = l->next)
f_print(fout, "\t argp->%s,\n",
l->decl.name);
f_print(fout, "\t ");
}
if (mtflag && !oneway)
f_print(fout, "%s, ", RESULT);
f_print(fout, "%s));\n}\n", RQSTP);
}
}
}
static void
write_program(definition *def, char *storage)
{
version_list *vp;
proc_list *proc;
int filled;
for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
f_print(fout, "\n");
if (storage != NULL) {
f_print(fout, "%s ", storage);
}
f_print(fout, "void\n");
pvname(def->def_name, vp->vers_num);
if (Cflag) {
f_print(fout, "(struct svc_req *%s, ", RQSTP);
f_print(fout, "register SVCXPRT *%s)\n", TRANSP);
} else {
f_print(fout, "(%s, %s)\n", RQSTP, TRANSP);
f_print(fout, " struct svc_req *%s;\n", RQSTP);
f_print(fout, " register SVCXPRT *%s;\n", TRANSP);
}
f_print(fout, "{\n");
filled = 0;
f_print(fout, "\tunion {\n");
for (proc = vp->procs; proc != NULL; proc = proc->next) {
if (proc->arg_num < 2) { /* single argument */
if (streq(proc->args.decls->decl.type,
"void")) {
continue;
}
filled = 1;
f_print(fout, "\t\t");
ptype(proc->args.decls->decl.prefix,
proc->args.decls->decl.type, 0);
pvname(proc->proc_name, vp->vers_num);
f_print(fout, "_arg;\n");
} else {
filled = 1;
f_print(fout, "\t\t%s", proc->args.argname);
f_print(fout, " ");
pvname(proc->proc_name, vp->vers_num);
f_print(fout, "_arg;\n");
}
}
if (!filled) {
f_print(fout, "\t\tint fill;\n");
}
f_print(fout, "\t} %s;\n", ARG);
if (mtflag) {
filled = 0;
f_print(fout, "\tunion {\n");
for (proc = vp->procs; proc != NULL;
proc = proc->next) {
if (streq(proc->res_type, "void") ||
streq(proc->res_type, "oneway"))
continue;
filled = 1;
f_print(fout, "\t\t");
ptype(proc->res_prefix, proc->res_type, 0);
pvname(proc->proc_name, vp->vers_num);
f_print(fout, "_res;\n");
}
if (!filled)
f_print(fout, "\t\tint fill;\n");
f_print(fout, "\t} %s;\n", RESULT);
f_print(fout, "\tbool_t %s;\n", RETVAL);
} else
f_print(fout, "\tchar *%s;\n", RESULT);
if (Cflag) {
f_print(fout, "\txdrproc_t _xdr_%s, _xdr_%s;\n",
ARG, RESULT);
if (mtflag)
f_print(fout,
"\tbool_t (*%s)(char *, void *, struct svc_req *);\n",
ROUTINE);
else
f_print(fout,
"\tchar *(*%s)(char *, struct svc_req *);\n",
ROUTINE);
} else {
f_print(fout,
"\tbool_t (*_xdr_%s)(), (*_xdr_%s)();\n",
ARG, RESULT);
if (mtflag)
f_print(fout, "\tbool_t (*%s)();\n", ROUTINE);
else
f_print(fout, "\tchar *(*%s)();\n", ROUTINE);
}
f_print(fout, "\n");
if (timerflag) {
if (mtflag)
f_print(fout,
"\t(void) mutex_lock(&_svcstate_lock);\n");
f_print(fout, "\t_rpcsvccount++;\n");
if (mtflag)
f_print(fout,
"\t(void) mutex_unlock(&_svcstate_lock);\n");
}
f_print(fout, "\tswitch (%s->rq_proc) {\n", RQSTP);
if (!nullproc(vp->procs)) {
f_print(fout, "\tcase NULLPROC:\n");
f_print(fout,
Cflag ?
"\t\t(void) svc_sendreply(%s,\n\t\t (xdrproc_t)xdr_void, NULL);\n" :
"\t\t(void) svc_sendreply(%s, xdr_void,\n\t\t\tNULL);\n",
TRANSP);
print_return("\t\t");
f_print(fout, "\n");
}
for (proc = vp->procs; proc != NULL; proc = proc->next) {
f_print(fout, "\tcase %s:\n", proc->proc_name);
if (proc->arg_num < 2) { /* single argument */
p_xdrfunc(ARG, proc->args.decls->decl.type);
} else {
p_xdrfunc(ARG, proc->args.argname);
}
if (streq(proc->res_type, "oneway")) {
/* One-way call */
f_print(fout, "\t\t_xdr_%s = NULL;\n", RESULT);
} else {
p_xdrfunc(RESULT, proc->res_type);
}
if (Cflag) {
if (mtflag) {
f_print(fout,
"\t\t%s = (bool_t (*) (char *, "
"void *, struct svc_req *))",
ROUTINE);
} else {
f_print(fout,
"\t\t%s = (char *(*)(char *, "
"struct svc_req *))",
ROUTINE);
}
} else {
if (mtflag) {
f_print(fout,
"\t\t%s = (bool_t (*)())",
ROUTINE);
} else {
f_print(fout, "\t\t%s = (char *(*)())",
ROUTINE);
}
}
f_print(fout, "\n\t\t ");
if (newstyle) { /* new style: calls internal routine */
f_print(fout, "_");
}
if ((Cflag || mtflag) && !newstyle)
pvname_svc(proc->proc_name, vp->vers_num);
else
pvname(proc->proc_name, vp->vers_num);
f_print(fout, ";\n");
f_print(fout, "\t\tbreak;\n\n");
}
f_print(fout, "\tdefault:\n");
printerr("noproc", TRANSP);
print_return("\t\t");
f_print(fout, "\t}\n");
f_print(fout,
"\t(void) memset((char *)&%s, 0, sizeof (%s));\n",
ARG, ARG);
printif("getargs", TRANSP, "(caddr_t)&", ARG);
printerr("decode", TRANSP);
print_return("\t\t");
f_print(fout, "\t}\n");
if (!mtflag)
if (Cflag)
f_print(fout,
"\t%s = (*%s)((char *)&%s, %s);\n",
RESULT, ROUTINE, ARG, RQSTP);
else
f_print(fout, "\t%s = (*%s)(&%s, %s);\n",
RESULT, ROUTINE, ARG, RQSTP);
else
if (Cflag)
f_print(fout,
"\t%s = (bool_t)(*%s)((char *)&%s, (void *)&%s, %s);\n",
RETVAL, ROUTINE, ARG, RESULT, RQSTP);
else
f_print(fout,
"\t%s = (bool_t)(*%s)(&%s, &%s, %s);\n",
RETVAL, ROUTINE, ARG, RESULT, RQSTP);
if (mtflag)
f_print(fout,
"\tif (_xdr_%s && %s > 0 &&\n"
"\t !svc_sendreply(%s, _xdr_%s, (char *)&%s)) {\n",
RESULT, RETVAL, TRANSP, RESULT, RESULT);
else
f_print(fout,
"\tif (_xdr_%s && %s != NULL &&\n"
"\t !svc_sendreply(%s, _xdr_%s, %s)) {\n",
RESULT, RESULT, TRANSP, RESULT, RESULT);
printerr("systemerr", TRANSP);
f_print(fout, "\t}\n");
printif("freeargs", TRANSP, "(caddr_t)&", ARG);
print_err_message("\t\t", "unable to free arguments");
f_print(fout, "\t\texit(1);\n");
f_print(fout, "\t}\n");
/* print out free routine */
if (mtflag) {
f_print(fout, "\tif (_xdr_%s != NULL) {\n", RESULT);
f_print(fout, "\t\tif (!");
pvname(def->def_name, vp->vers_num);
f_print(fout, "_freeresult(%s, _xdr_%s,\n",
TRANSP, RESULT);
f_print(fout, "\t\t (caddr_t)&%s))\n",
RESULT);
print_err_message("\t\t\t", "unable to free results");
f_print(fout, "\n");
f_print(fout, "\t}\n");
};
print_return("\t");
f_print(fout, "}\n");
}
}
static void
printerr(char *err, char *transp)
{
f_print(fout, "\t\tsvcerr_%s(%s);\n", err, transp);
}
static void
printif(char *proc, char *transp, char *prefix, char *arg)
{
f_print(fout, "\tif (!svc_%s(%s, _xdr_%s, %s%s)) {\n",
proc, transp, arg, prefix, arg);
}
int
nullproc(proc_list *proc)
{
for (; proc != NULL; proc = proc->next) {
if (streq(proc->proc_num, "0"))
return (1);
}
return (0);
}
static void
write_inetmost(char *infile)
{
f_print(fout, "\tregister SVCXPRT *%s;\n", TRANSP);
f_print(fout, "\tint sock;\n");
f_print(fout, "\tint proto;\n");
f_print(fout, "\tstruct sockaddr_in saddr;\n");
f_print(fout, "\tint asize = sizeof (saddr);\n");
f_print(fout, "\n");
f_print(fout,
"\tif (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {\n");
f_print(fout, "\t\tint ssize = sizeof (int);\n\n");
f_print(fout, "\t\tif (saddr.sin_family != AF_INET)\n");
f_print(fout, "\t\t\texit(1);\n");
f_print(fout, "\t\tif (getsockopt(0, SOL_SOCKET, SO_TYPE,\n");
f_print(fout, "\t\t (char *)&_rpcfdtype, &ssize) == -1)\n");
f_print(fout, "\t\t\texit(1);\n");
f_print(fout, "\t\tsock = 0;\n");
f_print(fout, "\t\t_rpcpmstart = 1;\n");
f_print(fout, "\t\tproto = 0;\n");
open_log_file(infile, "\t\t");
f_print(fout, "\t} else {\n");
write_rpc_svc_fg(infile, "\t\t");
f_print(fout, "\t\tsock = RPC_ANYSOCK;\n");
print_pmapunset("\t\t");
f_print(fout, "\t}\n");
}
static void
print_return(char *space)
{
if (exitnow) {
f_print(fout, "%sexit(0);\n", space);
return;
}
if (timerflag) {
if (mtflag) {
f_print(fout,
"%s(void) mutex_lock(&_svcstate_lock);\n",
space);
}
f_print(fout, "%s_rpcsvccount--;\n", space);
f_print(fout, "%s_rpcsvcstate = _SERVED;\n", space);
if (mtflag) {
f_print(fout,
"%s(void) mutex_unlock(&_svcstate_lock);\n",
space);
}
}
f_print(fout, "%sreturn; /* CSTYLED */\n", space);
}
static void
print_pmapunset(char *space)
{
list *l;
definition *def;
version_list *vp;
for (l = defined; l != NULL; l = l->next) {
def = (definition *)l->val;
if (def->def_kind == DEF_PROGRAM) {
for (vp = def->def.pr.versions; vp != NULL;
vp = vp->next) {
f_print(fout, "%s(void) pmap_unset(%s, %s);\n",
space, def->def_name, vp->vers_name);
}
}
}
}
static void
print_err_message(const char *space, const char *fmt, ...)
{
char errbuf[ERRBUFLEN];
va_list va;
va_start(va, fmt);
(void) vsnprintf(errbuf, sizeof (errbuf), fmt, va);
va_end(va);
if (logflag)
f_print(fout, "%ssyslog(LOG_ERR, \"%%s\",\n", space);
else if (inetdflag || pmflag)
f_print(fout, "%sRPC_MSGOUT(\"%%s\",\n", space);
else
f_print(fout, "%sfprintf(stderr, \"%%s\",\n", space);
f_print(fout, "%s \"%s\");\n", space, errbuf);
}
/*
* Write the server auxiliary function (RPC_MSGOUT, timeout)
*/
static void
write_svc_aux(int nomain)
{
if (!logflag)
write_msg_out();
if (!nomain)
write_timeout_func();
}
/*
* Write the RPC_MSGOUT function
*
* Note that while we define RPC_MSGOUT to be printf-like, all existing
* calls are of the form "%s","<msg>" and this implementation assumes that
* trivial case. If in the future it's desirable to generate richer calls
* this implementation can change to match. This way we don't (yet) have
* to introduce varargs into the generated code.
*/
static void
write_msg_out(void)
{
f_print(fout, "\n");
f_print(fout, "#if\tdefined(RPC_MSGOUT)\n");
if (!Cflag) {
f_print(fout, "extern void RPC_MSGOUT();\n");
} else {
f_print(fout, "extern void RPC_MSGOUT(const char *, ...);\n");
}
f_print(fout, "#else\t/* defined(RPC_MSGOUT) */\n");
f_print(fout, "static ");
if (!Cflag) {
f_print(fout, "void\nRPC_MSGOUT(fmt, msg)\n");
f_print(fout, "\tchar *fmt;\n");
f_print(fout, "\tchar *msg;\n");
} else {
f_print(fout, "void\nRPC_MSGOUT(const char *fmt, char *msg)\n");
}
f_print(fout, "{\n");
f_print(fout, "#ifdef RPC_SVC_FG\n");
if (inetdflag || pmflag)
f_print(fout, "\tif (_rpcpmstart)\n");
f_print(fout, "\t\tsyslog(LOG_ERR, fmt, msg);\n");
f_print(fout, "\telse {\n");
f_print(fout, "\t\t(void) fprintf(stderr, fmt, msg);\n");
f_print(fout, "\t\t(void) putc('\\n', stderr);\n");
f_print(fout, "\t}\n");
f_print(fout, "#else\n");
f_print(fout, "\tsyslog(LOG_ERR, fmt, msg);\n");
f_print(fout, "#endif\n");
f_print(fout, "}\n");
f_print(fout, "#endif\t/* defined(RPC_MSGOUT) */\n");
}
/*
* Write the timeout function
*/
static void
write_timeout_func(void)
{
if (!timerflag)
return;
f_print(fout, "\n");
if (mtflag) {
f_print(fout, "/*ARGSUSED*/\n");
f_print(fout, "static void *\n");
if (!Cflag) {
f_print(fout, "closedown(arg)\n");
f_print(fout, "\tvoid *arg;\n");
} else
f_print(fout, "closedown(void *arg)\n");
f_print(fout, "{\n");
f_print(fout, "\t/*CONSTCOND*/\n");
f_print(fout, "\twhile (1) {\n");
f_print(fout, "\t\t(void) sleep(_RPCSVC_CLOSEDOWN/2);\n\n");
f_print(fout,
"\t\tif (mutex_trylock(&_svcstate_lock) != 0)\n");
f_print(fout, "\t\t\tcontinue;\n\n");
f_print(fout,
"\t\tif (_rpcsvcstate == _IDLE && _rpcsvccount == 0) {\n");
if (tirpcflag) {
f_print(fout, "\t\t\tint size;\n");
} else {
f_print(fout, "\t\t\textern fd_set svc_fdset;\n");
f_print(fout, "\t\t\tstatic int size;\n");
}
f_print(fout, "\t\t\tint i, openfd = 0;\n\n");
if (tirpcflag) {
f_print(fout, "\t\t\tsize = svc_max_pollfd;\n");
} else {
f_print(fout, "\t\t\tif (size == 0) {\n");
f_print(fout, "\t\t\t\tsize = getdtablesize();\n");
f_print(fout, "\t\t\t}\n");
}
f_print(fout,
"\t\t\tfor (i = 0; i < size && openfd < 2; i++)\n");
if (tirpcflag) {
f_print(fout, "\t\t\t\tif (svc_pollfd[i].fd >= 0)\n");
} else {
f_print(fout, "\t\t\t\tif (FD_ISSET(i, &svc_fdset))\n");
}
f_print(fout, "\t\t\t\t\topenfd++;\n");
f_print(fout, "\t\t\tif (openfd <= 1)\n");
f_print(fout, "\t\t\t\texit(0);\n");
f_print(fout, "\t\t} else\n");
f_print(fout, "\t\t\t_rpcsvcstate = _IDLE;\n\n");
f_print(fout, "\t\t(void) mutex_unlock(&_svcstate_lock);\n");
f_print(fout, "\t}\n");
f_print(fout, "}\n");
return;
}
f_print(fout, "static void\n");
if (!Cflag) {
f_print(fout, "closedown(sig)\n");
f_print(fout, "\tint sig;\n");
} else
f_print(fout, "closedown(int sig)\n");
f_print(fout, "{\n");
f_print(fout, "\tif (_rpcsvcstate == _IDLE && _rpcsvccount == 0) {\n");
if (tirpcflag) {
f_print(fout, "\t\tint size;\n");
} else {
f_print(fout, "\t\textern fd_set svc_fdset;\n");
f_print(fout, "\t\tstatic int size;\n");
}
f_print(fout, "\t\tint i, openfd = 0;\n\n");
if (tirpcflag) {
f_print(fout, "\t\tsize = svc_max_pollfd;\n");
} else {
f_print(fout, "\t\tif (size == 0) {\n");
f_print(fout, "\t\t\tsize = getdtablesize();\n");
f_print(fout, "\t\t}\n");
}
f_print(fout,
"\t\tfor (i = 0; i < size && openfd < 2; i++)\n");
if (tirpcflag) {
f_print(fout, "\t\t\tif (svc_pollfd[i].fd >= 0)\n");
} else {
f_print(fout, "\t\t\tif (FD_ISSET(i, &svc_fdset))\n");
}
f_print(fout, "\t\t\t\topenfd++;\n");
f_print(fout, "\t\tif (openfd <= 1)\n");
f_print(fout, "\t\t\texit(0);\n");
f_print(fout, "\t} else\n");
f_print(fout, "\t\t_rpcsvcstate = _IDLE;\n\n");
f_print(fout, "\t(void) signal(SIGALRM, %s closedown);\n",
Cflag? "(SIG_PF)" : "(void(*)())");
f_print(fout, "\t(void) alarm(_RPCSVC_CLOSEDOWN/2);\n");
f_print(fout, "}\n");
}
/*
* Write the most of port monitor support
*/
static void
write_pm_most(char *infile, int netflag)
{
list *l;
definition *def;
version_list *vp;
f_print(fout, "\t(void) sigset(SIGPIPE, SIG_IGN);\n\n");
f_print(fout, "\t/*\n");
f_print(fout, "\t * If stdin looks like a TLI endpoint, we assume\n");
f_print(fout, "\t * that we were started by a port monitor. If\n");
f_print(fout, "\t * t_getstate fails with TBADF, this is not a\n");
f_print(fout, "\t * TLI endpoint.\n");
f_print(fout, "\t */\n");
f_print(fout, "\tif (t_getstate(0) != -1 || t_errno != TBADF) {\n");
f_print(fout, "\t\tchar *netid;\n");
if (!netflag) { /* Not included by -n option */
f_print(fout, "\t\tstruct netconfig *nconf = NULL;\n");
f_print(fout, "\t\tSVCXPRT *%s;\n", TRANSP);
}
if (timerflag)
f_print(fout, "\t\tint pmclose;\n");
/*
* Not necessary, defined in /usr/include/stdlib
* f_print(fout, "\t\textern char *getenv();\n");
*/
f_print(fout, "\n");
f_print(fout, "\t\t_rpcpmstart = 1;\n");
open_log_file(infile, "\t\t");
f_print(fout,
"\n\t\tif ((netid = getenv(\"NLSPROVIDER\")) == NULL) {\n");
if (timerflag) {
f_print(fout, "\t\t/* started from inetd */\n");
f_print(fout, "\t\t\tpmclose = 1;\n");
}
f_print(fout, "\t\t} else {\n");
f_print(fout, "\t\t\tif ((nconf = getnetconfigent(netid)) == NULL)\n");
print_err_message("\t\t\t\t", "cannot get transport info");
if (timerflag)
f_print(fout,
"\n\t\t\tpmclose = (t_getstate(0) != T_DATAXFER);\n");
f_print(fout, "\t\t}\n");
f_print(fout,
"\t\tif ((%s = svc_tli_create(0, nconf, NULL, 0, 0)) == NULL) {\n",
TRANSP);
print_err_message("\t\t\t", "cannot create server handle");
f_print(fout, "\t\t\texit(1);\n");
f_print(fout, "\t\t}\n");
f_print(fout, "\t\tif (nconf)\n");
f_print(fout, "\t\t\tfreenetconfigent(nconf);\n");
for (l = defined; l != NULL; l = l->next) {
def = (definition *) l->val;
if (def->def_kind != DEF_PROGRAM) {
continue;
}
for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
f_print(fout,
"\t\tif (!svc_reg(%s, %s, %s,\n",
TRANSP, def->def_name, vp->vers_name);
f_print(fout, "\t\t ");
pvname(def->def_name, vp->vers_num);
f_print(fout, ", 0)) {\n");
print_err_message("\t\t\t",
"unable to register (%s, %s).",
def->def_name, vp->vers_name);
f_print(fout, "\t\t\texit(1);\n");
f_print(fout, "\t\t}\n");
}
}
if (timerflag) {
f_print(fout, "\t\tif (pmclose) {\n");
if (mtflag) {
f_print(fout,
"\t\t\tif (thr_create(NULL, 0, closedown, NULL,\n\t\t\t 0, NULL) != 0) {\n");
print_err_message("\t\t\t\t",
"cannot create closedown thread");
f_print(fout, "\t\t\t\texit(1);\n");
f_print(fout, "\t\t\t}\n");
} else {
f_print(fout,
"\t\t\t(void) signal(SIGALRM, %s closedown);\n",
Cflag? "(SIG_PF)" : "(void(*)())");
f_print(fout,
"\t\t\t(void) alarm(_RPCSVC_CLOSEDOWN/2);\n");
}
f_print(fout, "\t\t}\n");
}
f_print(fout, "\t\tsvc_run();\n");
f_print(fout, "\t\texit(1);\n");
f_print(fout, "\t\t/* NOTREACHED */\n");
f_print(fout, "\t}");
}
/*
* Support for backgrounding the server if self started.
*/
static void
write_rpc_svc_fg(char *infile, char *sp)
{
f_print(fout, "#ifndef RPC_SVC_FG\n");
f_print(fout, "#pragma weak closefrom\n");
f_print(fout, "%sextern void closefrom();\n", sp);
f_print(fout, "%sint size;\n", sp);
if (tirpcflag)
f_print(fout, "%sstruct rlimit rl;\n", sp);
if (inetdflag)
f_print(fout, "%sint pid, i;\n\n", sp);
f_print(fout, "%spid = fork();\n", sp);
f_print(fout, "%sif (pid < 0) {\n", sp);
f_print(fout, "%s\tperror(\"cannot fork\");\n", sp);
f_print(fout, "%s\texit(1);\n", sp);
f_print(fout, "%s}\n", sp);
f_print(fout, "%sif (pid)\n", sp);
f_print(fout, "%s\texit(0);\n", sp);
/* close all file descriptors */
if (tirpcflag) {
f_print(fout, "%sif (closefrom != NULL)\n", sp);
f_print(fout, "%s\tclosefrom(0);\n", sp);
f_print(fout, "%selse {\n", sp);
f_print(fout, "%s\trl.rlim_max = 0;\n", sp);
f_print(fout, "%s\tgetrlimit(RLIMIT_NOFILE, &rl);\n", sp);
f_print(fout, "%s\tif ((size = rl.rlim_max) == 0)\n", sp);
f_print(fout, "%s\t\texit(1);\n", sp);
f_print(fout, "%s\tfor (i = 0; i < size; i++)\n", sp);
f_print(fout, "%s\t\t(void) close(i);\n", sp);
f_print(fout, "%s}\n", sp);
} else {
f_print(fout, "%s\tsize = getdtablesize();\n", sp);
f_print(fout, "%s\tfor (i = 0; i < size; i++)\n", sp);
f_print(fout, "%s\t\t(void) close(i);\n", sp);
}
/* Redirect stderr and stdout to /dev/null */
f_print(fout, "%si = open(\"/dev/null\", 2);\n", sp);
f_print(fout, "%s(void) dup2(i, 1);\n", sp);
f_print(fout, "%s(void) dup2(i, 2);\n", sp);
/* This removes control of the controlling terminal */
if (tirpcflag)
f_print(fout, "%ssetsid();\n", sp);
else {
f_print(fout, "%si = open(\"/dev/tty\", 2);\n", sp);
f_print(fout, "%sif (i >= 0) {\n", sp);
f_print(fout,
"%s\t(void) ioctl(i, TIOCNOTTY, (char *)NULL);\n", sp);
f_print(fout, "%s\t(void) close(i);\n", sp);
f_print(fout, "%s}\n", sp);
}
if (!logflag)
open_log_file(infile, sp);
f_print(fout, "#endif\n");
if (logflag)
open_log_file(infile, sp);
}
static void
open_log_file(char *infile, char *sp)
{
char *s;
s = strrchr(infile, '.');
if (s)
*s = '\0';
f_print(fout, "%sopenlog(\"%s\", LOG_PID, LOG_DAEMON);\n", sp, infile);
if (s)
*s = '.';
}
/*
* write a registration for the given transport for Inetd
*/
void
write_inetd_register(char *transp)
{
list *l;
definition *def;
version_list *vp;
char *sp;
int isudp;
char tmpbuf[32];
if (inetdflag)
sp = "\t";
else
sp = "";
if (streq(transp, "udp"))
isudp = 1;
else
isudp = 0;
f_print(fout, "\n");
if (inetdflag) {
f_print(fout,
"\tif ((_rpcfdtype == 0) || (_rpcfdtype == %s)) {\n",
isudp ? "SOCK_DGRAM" : "SOCK_STREAM");
}
f_print(fout, "%s\t%s = svc%s_create(%s",
sp, TRANSP, transp, inetdflag? "sock": "RPC_ANYSOCK");
if (!isudp)
f_print(fout, ", 0, 0");
f_print(fout, ");\n");
f_print(fout, "%s\tif (%s == NULL) {\n", sp, TRANSP);
(void) snprintf(tmpbuf, sizeof (tmpbuf), "%s\t\t", sp);
print_err_message(tmpbuf, "cannot create %s service.", transp);
f_print(fout, "%s\t\texit(1);\n", sp);
f_print(fout, "%s\t}\n", sp);
if (inetdflag) {
f_print(fout, "%s\tif (!_rpcpmstart)\n\t", sp);
f_print(fout, "%s\tproto = IPPROTO_%s;\n",
sp, isudp ? "UDP": "TCP");
}
for (l = defined; l != NULL; l = l->next) {
def = (definition *) l->val;
if (def->def_kind != DEF_PROGRAM)
continue;
for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
f_print(fout, "%s\tif (!svc_register(%s, %s, %s,\n",
sp, TRANSP, def->def_name, vp->vers_name);
f_print(fout, "%s\t ", sp);
pvname(def->def_name, vp->vers_num);
if (inetdflag)
f_print(fout, ", proto)) {\n");
else
f_print(fout, ", IPPROTO_%s)) {\n",
isudp ? "UDP": "TCP");
print_err_message(tmpbuf,
"unable to register (%s, %s, %s).",
def->def_name, vp->vers_name, transp);
f_print(fout, "%s\t\texit(1);\n", sp);
f_print(fout, "%s\t}\n", sp);
}
}
if (inetdflag)
f_print(fout, "\t}\n");
}