glibc/nis/nss_nis/nis-rpc.c

285 lines
6.1 KiB
C

/* Copyright (C) 1996-1998,2000,2002,2003,2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@suse.de>, 1996.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <nss.h>
#include <netdb.h>
#include <ctype.h>
#include <errno.h>
#include <string.h>
#include <bits/libc-lock.h>
#include <rpcsvc/yp.h>
#include <rpcsvc/ypclnt.h>
#include "nss-nis.h"
/* Get the declaration of the parser function. */
#define ENTNAME rpcent
#define EXTERN_PARSER
#include <nss/nss_files/files-parse.c>
__libc_lock_define_initialized (static, lock)
struct response_t
{
struct response_t *next;
char val[0];
};
struct intern_t
{
struct response_t *start;
struct response_t *next;
};
typedef struct intern_t intern_t;
static intern_t intern = {NULL, NULL};
static int
saveit (int instatus, char *inkey, int inkeylen, char *inval,
int invallen, char *indata)
{
intern_t *intern = (intern_t *)indata;
if (instatus != YP_TRUE)
return 1;
if (inkey && inkeylen > 0 && inval && invallen > 0)
{
struct response_t *newp = malloc (sizeof (struct response_t)
+ invallen + 1);
if (newp == NULL)
return 1; /* We have no error code for out of memory */
if (intern->start == NULL)
intern->start = newp;
else
intern->next->next = newp;
intern->next = newp;
newp->next = NULL;
*((char *) mempcpy (newp->val, inval, invallen)) = '\0';
}
return 0;
}
static void
internal_nis_endrpcent (intern_t *intern)
{
while (intern->start != NULL)
{
intern->next = intern->start;
intern->start = intern->start->next;
free (intern->next);
}
}
static enum nss_status
internal_nis_setrpcent (intern_t *intern)
{
char *domainname;
struct ypall_callback ypcb;
enum nss_status status;
if (yp_get_default_domain (&domainname))
return NSS_STATUS_UNAVAIL;
internal_nis_endrpcent (intern);
ypcb.foreach = saveit;
ypcb.data = (char *)intern;
status = yperr2nss (yp_all(domainname, "rpc.bynumber", &ypcb));
intern->next = intern->start;
return status;
}
enum nss_status
_nss_nis_setrpcent (int stayopen)
{
enum nss_status status;
__libc_lock_lock (lock);
status = internal_nis_setrpcent (&intern);
__libc_lock_unlock (lock);
return status;
}
enum nss_status
_nss_nis_endrpcent (void)
{
__libc_lock_lock (lock);
internal_nis_endrpcent (&intern);
__libc_lock_unlock (lock);
return NSS_STATUS_SUCCESS;
}
static enum nss_status
internal_nis_getrpcent_r (struct rpcent *rpc, char *buffer, size_t buflen,
int *errnop, intern_t *data)
{
struct parser_data *pdata = (void *) buffer;
int parse_res;
char *p;
if (data->start == NULL)
internal_nis_setrpcent (data);
/* Get the next entry until we found a correct one. */
do
{
if (data->next == NULL)
return NSS_STATUS_NOTFOUND;
p = strncpy (buffer, data->next->val, buflen);
while (isspace (*p))
++p;
parse_res = _nss_files_parse_rpcent (p, rpc, pdata, buflen, errnop);
if (parse_res == -1)
return NSS_STATUS_TRYAGAIN;
data->next = data->next->next;
}
while (!parse_res);
return NSS_STATUS_SUCCESS;
}
enum nss_status
_nss_nis_getrpcent_r (struct rpcent *rpc, char *buffer, size_t buflen,
int *errnop)
{
enum nss_status status;
__libc_lock_lock (lock);
status = internal_nis_getrpcent_r (rpc, buffer, buflen, errnop, &intern);
__libc_lock_unlock (lock);
return status;
}
enum nss_status
_nss_nis_getrpcbyname_r (const char *name, struct rpcent *rpc,
char *buffer, size_t buflen, int *errnop)
{
intern_t data = {NULL, NULL};
enum nss_status status;
int found;
if (name == NULL)
{
*errnop = EINVAL;
return NSS_STATUS_UNAVAIL;
}
status = internal_nis_setrpcent (&data);
if (status != NSS_STATUS_SUCCESS)
return status;
found = 0;
while (!found &&
((status = internal_nis_getrpcent_r (rpc, buffer, buflen, errnop,
&data)) == NSS_STATUS_SUCCESS))
{
if (strcmp (rpc->r_name, name) == 0)
found = 1;
else
{
int i = 0;
while (rpc->r_aliases[i] != NULL)
{
if (strcmp (rpc->r_aliases[i], name) == 0)
{
found = 1;
break;
}
else
++i;
}
}
}
internal_nis_endrpcent (&data);
if (!found && status == NSS_STATUS_SUCCESS)
return NSS_STATUS_NOTFOUND;
else
return status;
}
enum nss_status
_nss_nis_getrpcbynumber_r (int number, struct rpcent *rpc,
char *buffer, size_t buflen, int *errnop)
{
struct parser_data *data = (void *) buffer;
enum nss_status retval;
char *domain, *result, *p;
int len, nlen, parse_res;
char buf[32];
if (yp_get_default_domain (&domain))
return NSS_STATUS_UNAVAIL;
nlen = sprintf (buf, "%d", number);
retval = yperr2nss (yp_match (domain, "rpc.bynumber", buf,
nlen, &result, &len));
if (retval != NSS_STATUS_SUCCESS)
{
if (retval == NSS_STATUS_TRYAGAIN)
*errnop = errno;
return retval;
}
if ((size_t) (len + 1) > buflen)
{
free (result);
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
p = strncpy (buffer, result, len);
buffer[len] = '\0';
while (isspace (*p))
++p;
free (result);
parse_res = _nss_files_parse_rpcent (p, rpc, data, buflen, errnop);
if (parse_res < 1)
{
if (parse_res == -1)
return NSS_STATUS_TRYAGAIN;
else
return NSS_STATUS_NOTFOUND;
}
else
return NSS_STATUS_SUCCESS;
}