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/* $OpenBSD: getrpcent.c,v 1.14 2007/02/20 01:47:03 ray 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
*/
/*
* Copyright (c) 1984 by Sun Microsystems, Inc.
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <string.h>
#include <rpc/rpc.h>
/*
* Internet version.
*/
struct rpcdata {
FILE *rpcf;
int stayopen;
#define MAXALIASES 35
char *rpc_aliases[MAXALIASES];
struct rpcent rpc;
char line[BUFSIZ+1];
} *rpcdata;
static struct rpcent *interpret(char *val, int len);
static char RPCDB[] = "/etc/rpc";
static struct rpcdata *
_rpcdata(void)
{
struct rpcdata *d = rpcdata;
if (d == NULL) {
d = (struct rpcdata *)calloc(1, sizeof (struct rpcdata));
rpcdata = d;
}
return (d);
}
struct rpcent *
getrpcbynumber(int number)
{
struct rpcdata *d = _rpcdata();
struct rpcent *p;
if (d == NULL)
return (0);
setrpcent(0);
while ((p = getrpcent())) {
if (p->r_number == number)
break;
}
endrpcent();
return (p);
}
struct rpcent *
getrpcbyname(char *name)
{
struct rpcent *rpc;
char **rp;
setrpcent(0);
while ((rpc = getrpcent())) {
if (strcmp(rpc->r_name, name) == 0)
goto done;
for (rp = rpc->r_aliases; *rp != NULL; rp++) {
if (strcmp(*rp, name) == 0)
goto done;
}
}
done:
endrpcent();
return (rpc);
}
void
setrpcent(int f)
{
struct rpcdata *d = _rpcdata();
if (d == NULL)
return;
if (d->rpcf == NULL)
d->rpcf = fopen(RPCDB, "r");
else
rewind(d->rpcf);
d->stayopen |= f;
}
void
endrpcent(void)
{
struct rpcdata *d = _rpcdata();
if (d == NULL)
return;
if (d->rpcf && !d->stayopen) {
fclose(d->rpcf);
d->rpcf = NULL;
}
}
struct rpcent *
getrpcent(void)
{
struct rpcdata *d = _rpcdata();
if (d == NULL)
return(NULL);
if (d->rpcf == NULL && (d->rpcf = fopen(RPCDB, "r")) == NULL)
return (NULL);
/* -1 so there is room to append a \n below */
if (fgets(d->line, sizeof(d->line) - 1, d->rpcf) == NULL)
return (NULL);
return (interpret(d->line, strlen(d->line)));
}
static struct rpcent *
interpret(char *val, int len)
{
struct rpcdata *d = _rpcdata();
char *p;
char *cp, **q;
if (d == NULL)
return (0);
strlcpy(d->line, val, sizeof(d->line));
p = d->line;
p[len] = '\n';
if (*p == '#')
return (getrpcent());
cp = strpbrk(p, "#\n");
if (cp == NULL)
return (getrpcent());
*cp = '\0';
cp = strpbrk(p, " \t");
if (cp == NULL)
return (getrpcent());
*cp++ = '\0';
/* THIS STUFF IS INTERNET SPECIFIC */
d->rpc.r_name = d->line;
while (*cp == ' ' || *cp == '\t')
cp++;
d->rpc.r_number = atoi(cp);
q = d->rpc.r_aliases = d->rpc_aliases;
cp = strpbrk(cp, " \t");
if (cp != NULL)
*cp++ = '\0';
while (cp && *cp) {
if (*cp == ' ' || *cp == '\t') {
cp++;
continue;
}
if (q < &(d->rpc_aliases[MAXALIASES - 1]))
*q++ = cp;
cp = strpbrk(cp, " \t");
if (cp != NULL)
*cp++ = '\0';
}
*q = NULL;
return (&d->rpc);
}
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