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Diffstat (limited to 'nis/nss_nis/nis-service.c')
-rw-r--r--nis/nss_nis/nis-service.c438
1 files changed, 0 insertions, 438 deletions
diff --git a/nis/nss_nis/nis-service.c b/nis/nss_nis/nis-service.c
deleted file mode 100644
index 61a8ff5f46..0000000000
--- a/nis/nss_nis/nis-service.c
+++ /dev/null
@@ -1,438 +0,0 @@
-/* Copyright (C) 1996-2020 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, see
- <https://www.gnu.org/licenses/>. */
-
-#include <nss.h>
-#include <netdb.h>
-#include <ctype.h>
-#include <errno.h>
-#include <string.h>
-#include <libc-lock.h>
-#include <rpcsvc/yp.h>
-#include <rpcsvc/ypclnt.h>
-
-#include "nss-nis.h"
-#include <libnsl.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)
-
-static intern_t intern;
-
-struct search_t
-{
- const char *name;
- const char *proto;
- int port;
- enum nss_status status;
- struct servent *serv;
- char *buffer;
- size_t buflen;
- int *errnop;
-};
-
-static int
-dosearch (int instatus, char *inkey, int inkeylen, char *inval,
- int invallen, char *indata)
-{
- struct search_t *req = (struct search_t *) indata;
-
- if (__glibc_unlikely (instatus != YP_TRUE))
- return 1;
-
- if (inkey && inkeylen > 0 && inval && invallen > 0)
- {
- if (__glibc_unlikely ((size_t) (invallen + 1) > req->buflen))
- {
- *req->errnop = ERANGE;
- req->status = NSS_STATUS_TRYAGAIN;
- return 1;
- }
-
- char *p = strncpy (req->buffer, inval, invallen);
- req->buffer[invallen] = '\0';
- while (isspace (*p))
- ++p;
-
- int parse_res = _nss_files_parse_servent (p, req->serv,
- (void *) req->buffer,
- req->buflen, req->errnop);
- if (parse_res == -1)
- {
- req->status = NSS_STATUS_TRYAGAIN;
- return 1;
- }
-
- if (!parse_res)
- return 0;
-
- if (req->proto != NULL && strcmp (req->serv->s_proto, req->proto) != 0)
- return 0;
-
- if (req->port != -1 && req->serv->s_port != req->port)
- return 0;
-
- if (req->name != NULL && strcmp (req->serv->s_name, req->name) != 0)
- {
- char **cp;
- for (cp = req->serv->s_aliases; *cp; cp++)
- if (strcmp (req->name, *cp) == 0)
- break;
-
- if (*cp == NULL)
- return 0;
- }
-
- req->status = NSS_STATUS_SUCCESS;
- return 1;
- }
-
- return 0;
-}
-
-static void
-internal_nis_endservent (void)
-{
- struct response_t *curr = intern.next;
-
- while (curr != NULL)
- {
- struct response_t *last = curr;
- curr = curr->next;
- free (last);
- }
-
- intern.next = intern.start = NULL;
-}
-
-enum nss_status
-_nss_nis_endservent (void)
-{
- __libc_lock_lock (lock);
-
- internal_nis_endservent ();
-
- __libc_lock_unlock (lock);
-
- return NSS_STATUS_SUCCESS;
-}
-
-static enum nss_status
-internal_nis_setservent (void)
-{
- char *domainname;
- struct ypall_callback ypcb;
- enum nss_status status;
-
- if (yp_get_default_domain (&domainname))
- return NSS_STATUS_UNAVAIL;
-
- internal_nis_endservent ();
-
- ypcb.foreach = _nis_saveit;
- ypcb.data = (char *) &intern;
- status = yperr2nss (yp_all (domainname, "services.byname", &ypcb));
-
- /* Mark the last buffer as full. */
- if (intern.next != NULL)
- intern.next->size = intern.offset;
-
- intern.next = intern.start;
- intern.offset = 0;
-
- return status;
-}
-
-enum nss_status
-_nss_nis_setservent (int stayopen)
-{
- enum nss_status status;
-
- __libc_lock_lock (lock);
-
- status = internal_nis_setservent ();
-
- __libc_lock_unlock (lock);
-
- return status;
-}
-
-static enum nss_status
-internal_nis_getservent_r (struct servent *serv, char *buffer,
- size_t buflen, int *errnop)
-{
- struct parser_data *pdata = (void *) buffer;
- int parse_res;
- char *p;
-
- if (intern.start == NULL)
- internal_nis_setservent ();
-
- if (intern.next == NULL)
- /* Not one entry in the map. */
- return NSS_STATUS_NOTFOUND;
-
- /* Get the next entry until we found a correct one. */
- do
- {
- struct response_t *bucket = intern.next;
-
- if (__glibc_unlikely (intern.offset >= bucket->size))
- {
- if (bucket->next == NULL)
- return NSS_STATUS_NOTFOUND;
-
- /* We look at all the content in the current bucket. Go on
- to the next. */
- bucket = intern.next = bucket->next;
- intern.offset = 0;
- }
-
- for (p = &bucket->mem[intern.offset]; isspace (*p); ++p)
- ++intern.offset;
-
- size_t len = strlen (p) + 1;
- if (__glibc_unlikely (len > buflen))
- {
- *errnop = ERANGE;
- return NSS_STATUS_TRYAGAIN;
- }
-
- /* We unfortunately have to copy the data in the user-provided
- buffer because that buffer might be around for a very long
- time and the servent structure must remain valid. If we would
- rely on the BUCKET memory the next 'setservent' or 'endservent'
- call would destroy it.
-
- The important thing is that it is a single NUL-terminated
- string. This is what the parsing routine expects. */
- p = memcpy (buffer, &bucket->mem[intern.offset], len);
-
- parse_res = _nss_files_parse_servent (p, serv, pdata, buflen, errnop);
- if (__glibc_unlikely (parse_res == -1))
- return NSS_STATUS_TRYAGAIN;
-
- intern.offset += len;
- }
- 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);
-
- __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)
-{
- if (name == NULL)
- {
- *errnop = EINVAL;
- return NSS_STATUS_UNAVAIL;
- }
-
- char *domain;
- if (__glibc_unlikely (yp_get_default_domain (&domain)))
- 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. */
- size_t keylen = strlen (name) + (protocol ? 1 + strlen (protocol) : 0);
- /* Limit key length to the maximum size of an RPC packet. */
- if (keylen > UDPMSGSIZE)
- {
- *errnop = ERANGE;
- return NSS_STATUS_UNAVAIL;
- }
-
- char key[keylen + 1];
-
- /* key is: "name/proto" */
- char *cp = stpcpy (key, name);
- if (protocol != NULL)
- {
- *cp++ = '/';
- strcpy (cp, protocol);
- }
-
- char *result;
- int int_len;
- int status = yp_match (domain, "services.byservicename", key,
- keylen, &result, &int_len);
- size_t 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 (__glibc_likely (status == YPERR_SUCCESS))
- {
- if (__glibc_unlikely ((size_t) (len + 1) > buflen))
- {
- free (result);
- *errnop = ERANGE;
- return NSS_STATUS_TRYAGAIN;
- }
-
- char *p = strncpy (buffer, result, len);
- buffer[len] = '\0';
- while (isspace (*p))
- ++p;
- free (result);
-
- int parse_res = _nss_files_parse_servent (p, serv, (void *) buffer,
- buflen, errnop);
- if (__glibc_unlikely (parse_res < 0))
- {
- if (parse_res == -1)
- return NSS_STATUS_TRYAGAIN;
- else
- return NSS_STATUS_NOTFOUND;
- }
- else
- return NSS_STATUS_SUCCESS;
- }
-
- /* Check if it is safe to rely on services.byservicename. */
- if (_nsl_default_nss () & NSS_FLAG_SERVICES_AUTHORITATIVE)
- return yperr2nss (status);
-
- struct ypall_callback ypcb;
- struct search_t req;
-
- ypcb.foreach = dosearch;
- ypcb.data = (char *) &req;
- req.name = name;
- req.proto = protocol;
- req.port = -1;
- req.serv = serv;
- req.buffer = buffer;
- req.buflen = buflen;
- req.errnop = errnop;
- req.status = NSS_STATUS_NOTFOUND;
- status = yp_all (domain, "services.byname", &ypcb);
-
- if (__glibc_unlikely (status != YPERR_SUCCESS))
- return yperr2nss (status);
-
- return req.status;
-}
-
-enum nss_status
-_nss_nis_getservbyport_r (int port, const char *protocol,
- struct servent *serv, char *buffer,
- size_t buflen, int *errnop)
-{
- char *domain;
- if (__glibc_unlikely (yp_get_default_domain (&domain)))
- return NSS_STATUS_UNAVAIL;
-
- /* If the protocol is given, we only need one query.
- Otherwise try first port/tcp, then port/udp and then fallback
- to sequential scanning of services.byname. */
- const char *proto = protocol != NULL ? protocol : "tcp";
- /* Limit protocol name length to the maximum size of an RPC packet. */
- if (strlen (proto) > UDPMSGSIZE)
- {
- *errnop = ERANGE;
- return NSS_STATUS_UNAVAIL;
- }
-
- do
- {
- /* key is: "port/proto" */
- char key[sizeof (int) * 3 + strlen (proto) + 2];
- size_t keylen = snprintf (key, sizeof (key), "%d/%s", ntohs (port),
- proto);
-
- char *result;
- int int_len;
- int status = yp_match (domain, "services.byname", key, keylen, &result,
- &int_len);
- size_t 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 (__glibc_likely (status == YPERR_SUCCESS))
- {
- if (__glibc_unlikely ((size_t) (len + 1) > buflen))
- {
- free (result);
- *errnop = ERANGE;
- return NSS_STATUS_TRYAGAIN;
- }
-
- char *p = strncpy (buffer, result, len);
- buffer[len] = '\0';
- while (isspace (*p))
- ++p;
- free (result);
- int parse_res = _nss_files_parse_servent (p, serv, (void *) buffer,
- buflen, errnop);
- if (__glibc_unlikely (parse_res < 0))
- {
- if (parse_res == -1)
- return NSS_STATUS_TRYAGAIN;
- else
- return NSS_STATUS_NOTFOUND;
- }
-
- return NSS_STATUS_SUCCESS;
- }
- }
- while (protocol == NULL && (proto[0] == 't' ? (proto = "udp") : NULL));
-
- if (port == -1)
- return NSS_STATUS_NOTFOUND;
-
- struct ypall_callback ypcb;
- struct search_t req;
-
- ypcb.foreach = dosearch;
- ypcb.data = (char *) &req;
- req.name = NULL;
- req.proto = protocol;
- req.port = port;
- req.serv = serv;
- req.buffer = buffer;
- req.buflen = buflen;
- req.errnop = errnop;
- req.status = NSS_STATUS_NOTFOUND;
- int status = yp_all (domain, "services.byname", &ypcb);
-
- if (__glibc_unlikely (status != YPERR_SUCCESS))
- return yperr2nss (status);
-
- return req.status;
-}
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