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-rw-r--r--nis/nss_nis/nis-initgroups.c343
1 files changed, 0 insertions, 343 deletions
diff --git a/nis/nss_nis/nis-initgroups.c b/nis/nss_nis/nis-initgroups.c
deleted file mode 100644
index 9dc945a1bc..0000000000
--- a/nis/nss_nis/nis-initgroups.c
+++ /dev/null
@@ -1,343 +0,0 @@
-/* Copyright (C) 1998-2020 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Thorsten Kukuk <kukuk@suse.de>, 1998.
-
- 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 <ctype.h>
-#include <errno.h>
-#include <grp.h>
-#include <nss.h>
-#include <pwd.h>
-#include <string.h>
-#include <unistd.h>
-#include <rpcsvc/yp.h>
-#include <rpcsvc/ypclnt.h>
-#include <sys/param.h>
-#include <scratch_buffer.h>
-
-#include "nss-nis.h"
-#include <libnsl.h>
-
-/* Get the declaration of the parser function. */
-#define ENTNAME grent
-#define STRUCTURE group
-#define EXTERN_PARSER
-#include <nss/nss_files/files-parse.c>
-
-
-static enum nss_status
-internal_setgrent (char *domainname, intern_t *intern)
-{
- struct ypall_callback ypcb;
- enum nss_status status;
-
- ypcb.foreach = _nis_saveit;
- ypcb.data = (char *) intern;
- status = yperr2nss (yp_all (domainname, "group.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;
-}
-
-
-static enum nss_status
-internal_getgrent_r (struct group *grp, char *buffer, size_t buflen,
- int *errnop, intern_t *intern)
-{
- if (intern->start == NULL)
- return NSS_STATUS_NOTFOUND;
-
- /* Get the next entry until we found a correct one. */
- int parse_res;
- 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;
- }
-
- char *p;
- 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_grent (p, grp, (void *) buffer, buflen,
- errnop);
- if (__glibc_unlikely (parse_res == -1))
- return NSS_STATUS_TRYAGAIN;
-
- intern->offset += len;
- }
- while (!parse_res);
-
- return NSS_STATUS_SUCCESS;
-}
-
-
-static int
-get_uid (const char *user, uid_t *uidp)
-{
- struct scratch_buffer tmpbuf;
- scratch_buffer_init (&tmpbuf);
-
- while (1)
- {
- struct passwd result;
- struct passwd *resp;
-
- int r = getpwnam_r (user, &result, tmpbuf.data, tmpbuf.length, &resp);
- if (r == 0 && resp != NULL)
- {
- *uidp = resp->pw_uid;
- scratch_buffer_free (&tmpbuf);
- return 0;
- }
-
- if (r != ERANGE)
- break;
-
- if (!scratch_buffer_grow (&tmpbuf))
- return 1;
- }
-
- scratch_buffer_free (&tmpbuf);
- return 1;
-}
-
-
-static enum nss_status
-initgroups_netid (uid_t uid, gid_t group, long int *start, long int *size,
- gid_t **groupsp, long int limit, int *errnop,
- const char *domainname)
-{
- /* Limit domainname length to the maximum size of an RPC packet. */
- if (strlen (domainname) > UDPMSGSIZE)
- {
- *errnop = ERANGE;
- return NSS_STATUS_UNAVAIL;
- }
-
- /* Prepare the key. The form is "unix.UID@DOMAIN" with the UID and
- DOMAIN field filled in appropriately. */
- char key[sizeof ("unix.@") + sizeof (uid_t) * 3 + strlen (domainname)];
- ssize_t keylen = snprintf (key, sizeof (key), "unix.%lu@%s",
- (unsigned long int) uid, domainname);
-
- char *result;
- int reslen;
- int yperr = yp_match (domainname, "netid.byname", key, keylen, &result,
- &reslen);
- if (__glibc_unlikely (yperr != YPERR_SUCCESS))
- return yperr2nss (yperr);
-
- /* Parse the result: following the colon is a comma separated list of
- group IDs. */
- char *cp = strchr (result, ':');
- if (cp == NULL)
- {
- errout:
- free (result);
- return NSS_STATUS_NOTFOUND;
- }
- /* Skip the colon. */
- ++cp;
-
- gid_t *groups = *groupsp;
- while (*cp != '\0')
- {
- char *endp;
- unsigned long int gid = strtoul (cp, &endp, 0);
- if (cp == endp)
- goto errout;
- if (*endp == ',')
- ++endp;
- else if (*endp != '\0')
- goto errout;
- cp = endp;
-
- if (gid == group)
- /* We do not need this group again. */
- continue;
-
- /* Insert this group. */
- if (*start == *size)
- {
- /* Need a bigger buffer. */
- long int newsize;
-
- if (limit > 0 && *size == limit)
- /* We reached the maximum. */
- break;
-
- if (limit <= 0)
- newsize = 2 * *size;
- else
- newsize = MIN (limit, 2 * *size);
-
- gid_t *newgroups = realloc (groups, newsize * sizeof (*groups));
- if (newgroups == NULL)
- goto errout;
- *groupsp = groups = newgroups;
- *size = newsize;
- }
-
- groups[*start] = gid;
- *start += 1;
- }
-
- free (result);
-
- return NSS_STATUS_SUCCESS;
-}
-
-
-enum nss_status
-_nss_nis_initgroups_dyn (const char *user, gid_t group, long int *start,
- long int *size, gid_t **groupsp, long int limit,
- int *errnop)
-{
- /* We always need the domain name. */
- char *domainname;
- if (yp_get_default_domain (&domainname))
- return NSS_STATUS_UNAVAIL;
-
- /* Check whether we are supposed to use the netid.byname map. */
- if (_nsl_default_nss () & NSS_FLAG_NETID_AUTHORITATIVE)
- {
- /* We need the user ID. */
- uid_t uid;
-
- if (get_uid (user, &uid) == 0
- && initgroups_netid (uid, group, start, size, groupsp, limit,
- errnop, domainname) == NSS_STATUS_SUCCESS)
- return NSS_STATUS_SUCCESS;
- }
-
- struct group grpbuf, *g;
- enum nss_status status;
- intern_t intern = { NULL, NULL, 0 };
- gid_t *groups = *groupsp;
-
- status = internal_setgrent (domainname, &intern);
- if (status != NSS_STATUS_SUCCESS)
- return status;
-
- struct scratch_buffer tmpbuf;
- scratch_buffer_init (&tmpbuf);
-
- while (1)
- {
- while ((status =
- internal_getgrent_r (&grpbuf, tmpbuf.data, tmpbuf.length, errnop,
- &intern)) == NSS_STATUS_TRYAGAIN
- && *errnop == ERANGE)
- if (!scratch_buffer_grow (&tmpbuf))
- {
- status = NSS_STATUS_TRYAGAIN;
- goto done;
- }
-
- if (status != NSS_STATUS_SUCCESS)
- {
- if (status == NSS_STATUS_NOTFOUND)
- status = NSS_STATUS_SUCCESS;
- goto done;
- }
-
- g = &grpbuf;
- if (g->gr_gid != group)
- {
- char **m;
-
- for (m = g->gr_mem; *m != NULL; ++m)
- if (strcmp (*m, user) == 0)
- {
- /* Matches user. Insert this group. */
- if (*start == *size)
- {
- /* Need a bigger buffer. */
- gid_t *newgroups;
- long int newsize;
-
- if (limit > 0 && *size == limit)
- /* We reached the maximum. */
- goto done;
-
- if (limit <= 0)
- newsize = 2 * *size;
- else
- newsize = MIN (limit, 2 * *size);
-
- newgroups = realloc (groups, newsize * sizeof (*groups));
- if (newgroups == NULL)
- {
- status = NSS_STATUS_TRYAGAIN;
- *errnop = errno;
- goto done;
- }
- *groupsp = groups = newgroups;
- *size = newsize;
- }
-
- groups[*start] = g->gr_gid;
- *start += 1;
-
- break;
- }
- }
- }
-
-done:
- while (intern.start != NULL)
- {
- intern.next = intern.start;
- intern.start = intern.start->next;
- free (intern.next);
- }
- scratch_buffer_free (&tmpbuf);
-
- return status;
-}
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