glibc/nis/nss_nis/nis-service.c
Ulrich Drepper 6675b19146 Update.
* nis/nss_nis/nis-hosts.c: Make _nss_nis_endhostent an alias of
	_nss_nis_sethostent.  Work around the different prototypes.
	* nis/nss_nis/nis-grp.c: Make _nss_nis_endgrent an alias of
	_nss_nis_setgrent.  Work around the different prototypes.
	* nis/nss_nis/nis-ethers.c (internal_nis_endetherent): New
	function.  Split out from _nss_nis_endetherent.
	(internal_nis_setetherent): Use internal_nis_endetherent instead of
	duplicating the code.
	* nis/nss_nis/nis-alias.c: Make _nss_nss_nis_endaliasent an alias
	of _nss_nis_setaliasent.
	* nis/nss_nis/nis-service.c (internal_nis_setservent): Reuse
	internal_nis_endservent code, don't duplicate it.
2003-01-18 10:42:51 +00:00

380 lines
9.1 KiB
C

/* Copyright (C) 1996-2001, 2002, 2003 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 servent
#define EXTERN_PARSER
#include <nss/nss_files/files-parse.c>
__libc_lock_define_initialized (static, lock)
struct response_t
{
char *val;
struct response_t *next;
};
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 instatus;
if (inkey && inkeylen > 0 && inval && invallen > 0)
{
if (intern->start == NULL)
{
intern->start = malloc (sizeof (struct response_t));
if (intern->start == NULL)
return YP_FALSE; /* We have no error code for out of memory */
intern->next = intern->start;
}
else
{
intern->next->next = malloc (sizeof (struct response_t));
if (intern->next->next == NULL)
return YP_FALSE; /* We have no error code for out of memory */
intern->next = intern->next->next;
}
intern->next->next = NULL;
intern->next->val = malloc (invallen + 1);
if (intern->next->val == NULL)
return YP_FALSE; /* We have no error code for out of memory */
strncpy (intern->next->val, inval, invallen);
intern->next->val[invallen] = '\0';
}
return 0;
}
static enum nss_status
internal_nis_endservent (intern_t * intern)
{
while (intern->start != NULL)
{
if (intern->start->val != NULL)
free (intern->start->val);
intern->next = intern->start;
intern->start = intern->start->next;
free (intern->next);
}
intern->start = NULL;
return NSS_STATUS_SUCCESS;
}
enum nss_status
_nss_nis_endservent (void)
{
enum nss_status status;
__libc_lock_lock (lock);
status = internal_nis_endservent (&intern);
__libc_lock_unlock (lock);
return status;
}
static enum nss_status
internal_nis_setservent (intern_t *intern)
{
char *domainname;
struct ypall_callback ypcb;
enum nss_status status;
if (yp_get_default_domain (&domainname))
return NSS_STATUS_UNAVAIL;
(void) internal_nis_endservent (intern);
ypcb.foreach = saveit;
ypcb.data = (char *) intern;
status = yperr2nss (yp_all (domainname, "services.byname", &ypcb));
intern->next = intern->start;
return status;
}
enum nss_status
_nss_nis_setservent (int stayopen)
{
enum nss_status status;
__libc_lock_lock (lock);
status = internal_nis_setservent (&intern);
__libc_lock_unlock (lock);
return status;
}
static enum nss_status
internal_nis_getservent_r (struct servent *serv, 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_setservent (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_servent (p, serv, 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_getservent_r (struct servent *serv, char *buffer, size_t buflen,
int *errnop)
{
enum nss_status status;
__libc_lock_lock (lock);
status = internal_nis_getservent_r (serv, buffer, buflen, errnop, &intern);
__libc_lock_unlock (lock);
return status;
}
enum nss_status
_nss_nis_getservbyname_r (const char *name, const char *protocol,
struct servent *serv, 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;
}
/* If the protocol is given, we could try if our NIS server knows
about services.byservicename map. If yes, we only need one query */
if (protocol != NULL)
{
char key[strlen (name) + strlen (protocol) + 2];
char *cp, *domain, *result;
size_t keylen, len;
int int_len;
/* If this fails, the other solution will also fail. */
if (yp_get_default_domain (&domain))
return NSS_STATUS_UNAVAIL;
/* key is: "name/protocol" */
cp = stpcpy (key, name);
*cp++ = '/';
stpcpy (cp, protocol);
keylen = strlen (key);
status = yperr2nss (yp_match (domain, "services.byservicename", key,
keylen, &result, &int_len));
len = int_len;
/* If we found the key, it's ok and parse the result. If not,
fall through and parse the complete table. */
if (status == NSS_STATUS_SUCCESS)
{
struct parser_data *pdata = (void *) buffer;
int parse_res;
char *p;
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_servent (p, serv, pdata,
buflen, errnop);
if (parse_res < 0)
{
if (parse_res == -1)
return NSS_STATUS_TRYAGAIN;
else
return NSS_STATUS_NOTFOUND;
}
else
return NSS_STATUS_SUCCESS;
}
}
status = internal_nis_setservent (&data);
if (status != NSS_STATUS_SUCCESS)
return status;
found = 0;
while (!found &&
((status = internal_nis_getservent_r (serv, buffer, buflen, errnop,
&data)) == NSS_STATUS_SUCCESS))
{
if (protocol == NULL || strcmp (serv->s_proto, protocol) == 0)
{
char **cp;
if (strcmp (serv->s_name, name) == 0)
found = 1;
else
for (cp = serv->s_aliases; *cp; cp++)
if (strcmp (name, *cp) == 0)
found = 1;
}
}
internal_nis_endservent (&data);
if (!found && status == NSS_STATUS_SUCCESS)
return NSS_STATUS_NOTFOUND;
else
return status;
}
enum nss_status
_nss_nis_getservbyport_r (int port, const char *protocol,
struct servent *serv, char *buffer,
size_t buflen, int *errnop)
{
intern_t data = { NULL, NULL };
enum nss_status status;
int found;
/* If the protocol is given, we only need one query */
if (protocol != NULL)
{
char key[100 + strlen (protocol) + 2];
char *domain, *result;
size_t keylen, len;
int int_len;
/* If this fails, the other solution will also fail. */
if (yp_get_default_domain (&domain))
return NSS_STATUS_UNAVAIL;
/* key is: "port/protocol" */
keylen = snprintf (key, sizeof (key), "%d/%s", port, protocol);
status = yperr2nss (yp_match (domain, "services.byname", key,
keylen, &result, &int_len));
len = int_len;
/* If we found the key, it's ok and parse the result. If not,
fall through and parse the complete table. */
if (status == NSS_STATUS_SUCCESS)
{
struct parser_data *pdata = (void *) buffer;
int parse_res;
char *p;
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_servent (p, serv, pdata,
buflen, errnop);
if (parse_res < 0)
{
if (parse_res == -1)
return NSS_STATUS_TRYAGAIN;
else
return NSS_STATUS_NOTFOUND;
}
else
return NSS_STATUS_SUCCESS;
}
}
status = internal_nis_setservent (&data);
if (status != NSS_STATUS_SUCCESS)
return status;
found = 0;
while (!found &&
((status = internal_nis_getservent_r (serv, buffer, buflen, errnop,
&data)) == NSS_STATUS_SUCCESS))
if (serv->s_port == port &&
(protocol == NULL || strcmp (serv->s_proto, protocol) == 0))
found = 1;
internal_nis_endservent (&data);
if (!found && status == NSS_STATUS_SUCCESS)
return NSS_STATUS_NOTFOUND;
else
return status;
}