-/* Copyright (C) 1989, 1991, 1993, 1996, 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1989, 91, 93, 96, 97, 98 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
+#include <nsswitch.h>
+/* Type of the lookup function. */
+typedef enum nss_status (*initgroups_function) (const char *, gid_t,
+ long int *, long int *,
+ gid_t *, long int, int *);
+/* Prototype for the setgrent functions we use here. */
+typedef enum nss_status (*set_function) (void);
+
+/* Prototype for the endgrent functions we use here. */
+typedef enum nss_status (*end_function) (void);
+
+/* Prototype for the setgrent functions we use here. */
+typedef enum nss_status (*get_function) (struct group *, char *,
+ size_t, int *);
+
+/* The lookup function for the first entry of this service. */
+extern int __nss_group_lookup (service_user **nip, const char *name,
+ void **fctp);
+extern void *__nss_lookup_function (service_user *ni, const char *fct_name);
+
+extern service_user *__nss_group_database;
+
+static enum nss_status
+compat_call (service_user *nip, const char *user, gid_t group, long int *start,
+ long int *size, gid_t *groups, long int limit, int *errnop)
+{
+ struct group grpbuf, *g;
+ size_t buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
+ char *tmpbuf;
+ enum nss_status status;
+ set_function setgrent_fct;
+ get_function getgrent_fct;
+ end_function endgrent_fct;
+
+ setgrent_fct = __nss_lookup_function (nip, "setgrent");
+ status = (*setgrent_fct) ();
+ if (status != NSS_STATUS_SUCCESS)
+ return status;
+
+ getgrent_fct = __nss_lookup_function (nip, "getgrent_r");
+ endgrent_fct = __nss_lookup_function (nip, "endgrent");
+
+ tmpbuf = __alloca (buflen);
+
+ do
+ {
+ while ((status =
+ (*getgrent_fct) (&grpbuf, tmpbuf, buflen, errnop)) ==
+ NSS_STATUS_TRYAGAIN && *errnop == ERANGE)
+ {
+ buflen *= 2;
+ tmpbuf = __alloca (buflen);
+ }
+
+ if (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 && limit <= 0)
+ {
+ /* Need a bigger buffer. */
+ groups = realloc (groups, *size * sizeof (*groups));
+ if (groups == NULL)
+ goto done;
+ *size *= 2;
+ }
+
+ groups[*start] = g->gr_gid;
+ *start += 1;
+
+ if (*start == limit)
+ /* Can't take any more groups; stop searching. */
+ goto done;
+
+ break;
+ }
+ }
+ }
+ while (status == NSS_STATUS_SUCCESS);
+
+ done:
+ (*endgrent_fct) ();
+
+ return NSS_STATUS_SUCCESS;
+}
+
/* Initialize the group set for the current user
by reading the group database and using all groups
of which USER is a member. Also include GROUP. */
#else
- struct group grpbuf, *g;
- size_t buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
- char *tmpbuf;
- size_t n;
- size_t ngroups;
+ service_user *nip = NULL;
+ initgroups_function fct;
+ enum nss_status status = NSS_STATUS_UNAVAIL;
+ int no_more;
+ /* Start is one, because we have the first group as parameter. */
+ long int start = 1;
+ long int size;
gid_t *groups;
- int status;
#ifdef NGROUPS_MAX
# define limit NGROUPS_MAX
- ngroups = limit;
+ size = limit;
#else
long int limit = sysconf (_SC_NGROUPS_MAX);
if (limit > 0)
- ngroups = limit;
+ size = limit;
else
/* No fixed limit on groups. Pick a starting buffer size. */
- ngroups = 16;
+ size = 16;
#endif
- groups = __alloca (ngroups * sizeof *groups);
- tmpbuf = __alloca (buflen);
-
- setgrent ();
+ groups = malloc (size * sizeof (gid_t *));
- n = 0;
- groups[n++] = group;
+ groups[0] = group;
- do
+ if (__nss_group_database != NULL)
{
- while ((status = __getgrent_r (&grpbuf, tmpbuf, buflen, &g)) != 0
- && errno == ERANGE)
- {
- buflen *= 2;
- tmpbuf = __alloca (buflen);
- }
-
- if (status == 0 && 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 (n == ngroups && limit <= 0)
- {
- /* Need a bigger buffer. */
- gid_t *newgrp;
- newgrp = __alloca (ngroups * 2 * sizeof *groups);
- groups = memcpy (newgrp, groups, ngroups * sizeof *groups);
- ngroups *= 2;
- }
-
- groups[n++] = g->gr_gid;
-
- if (n == limit)
- /* Can't take any more groups; stop searching. */
- goto done;
-
- break;
- }
- }
+ no_more = 0;
+ nip = __nss_group_database;
}
- while (status == 0);
+ else
+ no_more = __nss_database_lookup ("group", NULL,
+ "compat [NOTFOUND=return] files", &nip);
-done:
- endgrent ();
+ while (! no_more)
+ {
+ fct = __nss_lookup_function (nip, "initgroups");
+
+ if (fct == NULL)
+ status = compat_call (nip, user, group, &start, &size, groups,
+ limit, &errno);
+ else
+ status = (*fct) (user, group, &start, &size, groups, limit,
+ &errno);
+
+ if (nip->next == NULL)
+ no_more = -1;
+ else
+ nip = nip->next;
+ }
- return setgroups (n, groups);
+ return setgroups (start, groups);
#endif
}
--- /dev/null
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1998.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <nss.h>
+#include <grp.h>
+#include <ctype.h>
+#include <string.h>
+#include <unistd.h>
+#include <rpcsvc/yp.h>
+#include <rpcsvc/ypclnt.h>
+#include <rpcsvc/nis.h>
+#include <nsswitch.h>
+
+#include "nss-nisplus.h"
+#include "nisplus-parser.h"
+
+static service_user *ni = NULL;
+static bool_t use_nisplus = FALSE; /* default: group_compat: nis */
+static nis_name grptable = NULL; /* Name of the group table */
+static size_t grptablelen = 0;
+
+/* Get the declaration of the parser function. */
+#define ENTNAME grent
+#define STRUCTURE group
+#define EXTERN_PARSER
+#include <nss/nss_files/files-parse.c>
+
+/* Structure for remembering -group members ... */
+#define BLACKLIST_INITIAL_SIZE 512
+#define BLACKLIST_INCREMENT 256
+struct blacklist_t
+ {
+ char *data;
+ int current;
+ int size;
+ };
+
+struct ent_t
+ {
+ bool_t nis;
+ bool_t nis_first;
+ char *oldkey;
+ int oldkeylen;
+ nis_result *result;
+ FILE *stream;
+ struct blacklist_t blacklist;
+};
+typedef struct ent_t ent_t;
+
+
+/* Prototypes for local functions. */
+static void blacklist_store_name (const char *, ent_t *);
+static int in_blacklist (const char *, int, ent_t *);
+
+static enum nss_status
+_nss_first_init (void)
+{
+ if (ni == NULL)
+ {
+ __nss_database_lookup ("group_compat", NULL, "nis", &ni);
+ use_nisplus = (strcmp (ni->name, "nisplus") == 0);
+ }
+
+ if (grptable == NULL)
+ {
+ static const char key[] = "group.org_dir.";
+ const char *local_dir = nis_local_directory ();
+ size_t len_local_dir = strlen (local_dir);
+
+ grptable = malloc (sizeof (key) + len_local_dir);
+ if (grptable == NULL)
+ return NSS_STATUS_TRYAGAIN;
+
+ grptablelen = ((char *) mempcpy (mempcpy (grptable,
+ key, sizeof (key) - 1),
+ local_dir, len_local_dir + 1)
+ - grptable) - 1;
+ }
+
+ return NSS_STATUS_SUCCESS;
+}
+
+static enum nss_status
+internal_setgrent (ent_t *ent)
+{
+ enum nss_status status = NSS_STATUS_SUCCESS;
+
+ ent->nis = ent->nis_first = 0;
+
+ if (_nss_first_init () != NSS_STATUS_SUCCESS)
+ return NSS_STATUS_UNAVAIL;
+
+ if (ent->oldkey != NULL)
+ {
+ free (ent->oldkey);
+ ent->oldkey = NULL;
+ ent->oldkeylen = 0;
+ }
+
+ if (ent->result != NULL)
+ {
+ nis_freeresult (ent->result);
+ ent->result = NULL;
+ }
+
+ if (ent->blacklist.data != NULL)
+ {
+ ent->blacklist.current = 1;
+ ent->blacklist.data[0] = '|';
+ ent->blacklist.data[1] = '\0';
+ }
+ else
+ ent->blacklist.current = 0;
+
+ if (ent->stream == NULL)
+ {
+ ent->stream = fopen ("/etc/group", "r");
+
+ if (ent->stream == NULL)
+ status = errno == EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL;
+ else
+ {
+ /* We have to make sure the file is `closed on exec'. */
+ int result, flags;
+
+ result = flags = fcntl (fileno (ent->stream), F_GETFD, 0);
+ if (result >= 0)
+ {
+ flags |= FD_CLOEXEC;
+ result = fcntl (fileno (ent->stream), F_SETFD, flags);
+ }
+ if (result < 0)
+ {
+ /* Something went wrong. Close the stream and return a
+ failure. */
+ fclose (ent->stream);
+ ent->stream = NULL;
+ status = NSS_STATUS_UNAVAIL;
+ }
+ }
+ }
+ else
+ rewind (ent->stream);
+
+ return status;
+}
+
+
+static enum nss_status
+internal_endgrent (ent_t *ent)
+{
+ if (ent->stream != NULL)
+ {
+ fclose (ent->stream);
+ ent->stream = NULL;
+ }
+
+ ent->nis = ent->nis_first = 0;
+
+ if (ent->oldkey != NULL)
+ {
+ free (ent->oldkey);
+ ent->oldkey = NULL;
+ ent->oldkeylen = 0;
+ }
+
+ if (ent->result != NULL)
+ {
+ nis_freeresult (ent->result);
+ ent->result = NULL;
+ }
+
+ if (ent->blacklist.data != NULL)
+ {
+ ent->blacklist.current = 1;
+ ent->blacklist.data[0] = '|';
+ ent->blacklist.data[1] = '\0';
+ }
+ else
+ ent->blacklist.current = 0;
+
+ return NSS_STATUS_SUCCESS;
+}
+
+static enum nss_status
+getgrent_next_nis (struct group *result, ent_t *ent, char *buffer,
+ size_t buflen, int *errnop)
+{
+ struct parser_data *data = (void *) buffer;
+ char *domain;
+ char *outkey, *outval;
+ int outkeylen, outvallen, parse_res;
+ char *p;
+
+ if (yp_get_default_domain (&domain) != YPERR_SUCCESS)
+ {
+ ent->nis = 0;
+ return NSS_STATUS_NOTFOUND;
+ }
+
+ do
+ {
+ char *save_oldkey;
+ int save_oldlen;
+ bool_t save_nis_first;
+
+ if (ent->nis_first)
+ {
+ if (yp_first (domain, "group.byname", &outkey, &outkeylen,
+ &outval, &outvallen) != YPERR_SUCCESS)
+ {
+ ent->nis = 0;
+ return NSS_STATUS_UNAVAIL;
+ }
+
+ if ( buflen < ((size_t) outvallen + 1))
+ {
+ free (outval);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ save_oldkey = ent->oldkey;
+ save_oldlen = ent->oldkeylen;
+ save_nis_first = TRUE;
+ ent->oldkey = outkey;
+ ent->oldkeylen = outkeylen;
+ ent->nis_first = FALSE;
+ }
+ else
+ {
+ if (yp_next (domain, "group.byname", ent->oldkey, ent->oldkeylen,
+ &outkey, &outkeylen, &outval, &outvallen)
+ != YPERR_SUCCESS)
+ {
+ ent->nis = 0;
+ return NSS_STATUS_NOTFOUND;
+ }
+
+ if ( buflen < ((size_t) outvallen + 1))
+ {
+ free (outval);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ save_oldkey = ent->oldkey;
+ save_oldlen = ent->oldkeylen;
+ save_nis_first = FALSE;
+ ent->oldkey = outkey;
+ ent->oldkeylen = outkeylen;
+ }
+
+ /* Copy the found data to our buffer... */
+ p = strncpy (buffer, outval, buflen);
+
+ /* ...and free the data. */
+ free (outval);
+
+ while (isspace (*p))
+ ++p;
+
+ parse_res = _nss_files_parse_grent (p, result, data, buflen, errnop);
+ if (parse_res == -1)
+ {
+ free (ent->oldkey);
+ ent->oldkey = save_oldkey;
+ ent->oldkeylen = save_oldlen;
+ ent->nis_first = save_nis_first;
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ else
+ {
+ if (!save_nis_first)
+ free (save_oldkey);
+ }
+
+ if (parse_res &&
+ in_blacklist (result->gr_name, strlen (result->gr_name), ent))
+ parse_res = 0; /* if result->gr_name in blacklist,search next entry */
+ }
+ while (!parse_res);
+
+ return NSS_STATUS_SUCCESS;
+}
+
+static enum nss_status
+getgrent_next_nisplus (struct group *result, ent_t *ent, char *buffer,
+ size_t buflen, int *errnop)
+{
+ int parse_res;
+
+ do
+ {
+ nis_result *save_oldres;
+ bool_t save_nis_first;
+
+ if (ent->nis_first)
+ {
+ save_oldres = ent->result;
+ save_nis_first = TRUE;
+ ent->result = nis_first_entry(grptable);
+ if (niserr2nss (ent->result->status) != NSS_STATUS_SUCCESS)
+ {
+ ent->nis = 0;
+ return niserr2nss (ent->result->status);
+ }
+ ent->nis_first = FALSE;
+ }
+ else
+ {
+ nis_result *res;
+
+ save_oldres = ent->result;
+ save_nis_first = FALSE;
+ res = nis_next_entry(grptable, &ent->result->cookie);
+ ent->result = res;
+ if (niserr2nss (ent->result->status) != NSS_STATUS_SUCCESS)
+ {
+ ent->nis = 0;
+ return niserr2nss (ent->result->status);
+ }
+ }
+ parse_res = _nss_nisplus_parse_grent (ent->result, 0, result,
+ buffer, buflen, errnop);
+ if (parse_res == -1)
+ {
+ nis_freeresult (ent->result);
+ ent->result = save_oldres;
+ ent->nis_first = save_nis_first;
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ else
+ {
+ if (!save_nis_first)
+ nis_freeresult (save_oldres);
+ }
+
+ if (parse_res &&
+ in_blacklist (result->gr_name, strlen (result->gr_name), ent))
+ parse_res = 0; /* if result->gr_name in blacklist,search next entry */
+ }
+ while (!parse_res);
+
+ return NSS_STATUS_SUCCESS;
+}
+
+/* This function handle the +group entrys in /etc/group */
+static enum nss_status
+getgrnam_plusgroup (const char *name, struct group *result, char *buffer,
+ size_t buflen, int *errnop)
+{
+ struct parser_data *data = (void *) buffer;
+ int parse_res;
+
+ if (use_nisplus) /* Do the NIS+ query here */
+ {
+ nis_result *res;
+ char buf[strlen (name) + 24 + grptablelen];
+
+ sprintf(buf, "[name=%s],%s", name, grptable);
+ res = nis_list(buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL);
+ if (niserr2nss (res->status) != NSS_STATUS_SUCCESS)
+ {
+ enum nss_status status = niserr2nss (res->status);
+
+ nis_freeresult (res);
+ return status;
+ }
+ parse_res = _nss_nisplus_parse_grent (res, 0, result, buffer, buflen,
+ errnop);
+ if (parse_res == -1)
+ {
+ nis_freeresult (res);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ nis_freeresult (res);
+ }
+ else /* Use NIS */
+ {
+ char *domain, *outval, *p;
+ int outvallen;
+
+ if (yp_get_default_domain (&domain) != YPERR_SUCCESS)
+ return NSS_STATUS_NOTFOUND;
+
+ if (yp_match (domain, "group.byname", name, strlen (name),
+ &outval, &outvallen) != YPERR_SUCCESS)
+ return NSS_STATUS_NOTFOUND;
+
+ if (buflen < ((size_t) outvallen + 1))
+ {
+ free (outval);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ /* Copy the found data to our buffer... */
+ p = strncpy (buffer, outval, buflen);
+
+ /* ... and free the data. */
+ free (outval);
+ while (isspace (*p))
+ ++p;
+ parse_res = _nss_files_parse_grent (p, result, data, buflen, errnop);
+ if (parse_res == -1)
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ if (parse_res)
+ /* We found the entry. */
+ return NSS_STATUS_SUCCESS;
+ else
+ return NSS_STATUS_RETURN;
+}
+
+static enum nss_status
+getgrent_next_file (struct group *result, ent_t *ent,
+ char *buffer, size_t buflen, int *errnop)
+{
+ struct parser_data *data = (void *) buffer;
+ while (1)
+ {
+ fpos_t pos;
+ int parse_res = 0;
+ char *p;
+
+ do
+ {
+ fgetpos (ent->stream, &pos);
+ buffer[buflen - 1] = '\xff';
+ p = fgets (buffer, buflen, ent->stream);
+ if (p == NULL && feof (ent->stream))
+ return NSS_STATUS_NOTFOUND;
+ if (p == NULL || buffer[buflen - 1] != '\xff')
+ {
+ fsetpos (ent->stream, &pos);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ /* Terminate the line for any case. */
+ buffer[buflen - 1] = '\0';
+
+ /* Skip leading blanks. */
+ while (isspace (*p))
+ ++p;
+ }
+ while (*p == '\0' || *p == '#' || /* Ignore empty and comment lines. */
+ /* Parse the line. If it is invalid, loop to
+ get the next line of the file to parse. */
+ !(parse_res = _nss_files_parse_grent (p, result, data, buflen,
+ errnop)));
+
+ if (parse_res == -1)
+ {
+ /* The parser ran out of space. */
+ fsetpos (ent->stream, &pos);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ if (result->gr_name[0] != '+' && result->gr_name[0] != '-')
+ /* This is a real entry. */
+ break;
+
+ /* -group */
+ if (result->gr_name[0] == '-' && result->gr_name[1] != '\0'
+ && result->gr_name[1] != '@')
+ {
+ blacklist_store_name (&result->gr_name[1], ent);
+ continue;
+ }
+
+ /* +group */
+ if (result->gr_name[0] == '+' && result->gr_name[1] != '\0'
+ && result->gr_name[1] != '@')
+ {
+ enum nss_status status;
+
+ /* Store the group in the blacklist for the "+" at the end of
+ /etc/group */
+ blacklist_store_name (&result->gr_name[1], ent);
+ status = getgrnam_plusgroup (&result->gr_name[1], result, buffer,
+ buflen, errnop);
+ if (status == NSS_STATUS_SUCCESS) /* We found the entry. */
+ break;
+ else
+ if (status == NSS_STATUS_RETURN /* We couldn't parse the entry */
+ || status == NSS_STATUS_NOTFOUND) /* No group in NIS */
+ continue;
+ else
+ {
+ if (status == NSS_STATUS_TRYAGAIN)
+ {
+ /* The parser ran out of space. */
+ fsetpos (ent->stream, &pos);
+ *errnop = ERANGE;
+ }
+ return status;
+ }
+ }
+
+ /* +:... */
+ if (result->gr_name[0] == '+' && result->gr_name[1] == '\0')
+ {
+ ent->nis = TRUE;
+ ent->nis_first = TRUE;
+
+ if (use_nisplus)
+ return getgrent_next_nisplus (result, ent, buffer, buflen, errnop);
+ else
+ return getgrent_next_nis (result, ent, buffer, buflen, errnop);
+ }
+ }
+
+ return NSS_STATUS_SUCCESS;
+}
+
+
+static enum nss_status
+internal_getgrent_r (struct group *gr, ent_t *ent, char *buffer,
+ size_t buflen, int *errnop)
+{
+ if (ent->nis)
+ {
+ if (use_nisplus)
+ return getgrent_next_nisplus (gr, ent, buffer, buflen, errnop);
+ else
+ return getgrent_next_nis (gr, ent, buffer, buflen, errnop);
+ }
+ else
+ return getgrent_next_file (gr, ent, buffer, buflen, errnop);
+}
+
+enum nss_status
+_nss_compat_initgroups (const char *user, gid_t group, long int *start,
+ long int *size, gid_t *groups, long int limit,
+ int *errnop)
+{
+ struct group grpbuf, *g;
+ size_t buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
+ char *tmpbuf;
+ enum nss_status status;
+ ent_t intern = {0, 0, NULL, 0, NULL, NULL, {NULL, 0, 0}};
+
+ status = internal_setgrent (&intern);
+ if (status != NSS_STATUS_SUCCESS)
+ return status;
+
+ tmpbuf = __alloca (buflen);
+
+ do
+ {
+ while ((status =
+ internal_getgrent_r (&grpbuf, &intern, tmpbuf, buflen,
+ errnop)) == NSS_STATUS_TRYAGAIN
+ && *errnop == ERANGE)
+ {
+ buflen *= 2;
+ tmpbuf = __alloca (buflen);
+ }
+
+ if (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 && limit <= 0)
+ {
+ /* Need a bigger buffer. */
+ groups = realloc (groups, *size * sizeof (*groups));
+ if (groups == NULL)
+ goto done;
+ *size *= 2;
+ }
+
+ groups[*start] = g->gr_gid;
+ *start += 1;
+
+ if (*start == limit)
+ /* Can't take any more groups; stop searching. */
+ goto done;
+
+ break;
+ }
+ }
+ }
+ while (status == NSS_STATUS_SUCCESS);
+
+done:
+ internal_endgrent (&intern);
+
+ return NSS_STATUS_SUCCESS;
+}
+
+
+/* Support routines for remembering -@netgroup and -user entries.
+ The names are stored in a single string with `|' as separator. */
+static void
+blacklist_store_name (const char *name, ent_t *ent)
+{
+ int namelen = strlen (name);
+ char *tmp;
+
+ /* first call, setup cache */
+ if (ent->blacklist.size == 0)
+ {
+ ent->blacklist.size = MAX (BLACKLIST_INITIAL_SIZE, 2 * namelen);
+ ent->blacklist.data = malloc (ent->blacklist.size);
+ if (ent->blacklist.data == NULL)
+ return;
+ ent->blacklist.data[0] = '|';
+ ent->blacklist.data[1] = '\0';
+ ent->blacklist.current = 1;
+ }
+ else
+ {
+ if (in_blacklist (name, namelen, ent))
+ return; /* no duplicates */
+
+ if (ent->blacklist.current + namelen + 1 >= ent->blacklist.size)
+ {
+ ent->blacklist.size += MAX (BLACKLIST_INCREMENT, 2 * namelen);
+ tmp = realloc (ent->blacklist.data, ent->blacklist.size);
+ if (tmp == NULL)
+ {
+ free (ent->blacklist.data);
+ ent->blacklist.size = 0;
+ return;
+ }
+ ent->blacklist.data = tmp;
+ }
+ }
+
+ tmp = stpcpy (ent->blacklist.data + ent->blacklist.current, name);
+ *tmp++ = '|';
+ *tmp = '\0';
+ ent->blacklist.current += namelen + 1;
+
+ return;
+}
+
+/* returns TRUE if ent->blacklist contains name, else FALSE */
+static bool_t
+in_blacklist (const char *name, int namelen, ent_t *ent)
+{
+ char buf[namelen + 3];
+ char *cp;
+
+ if (ent->blacklist.data == NULL)
+ return FALSE;
+
+ buf[0] = '|';
+ cp = stpcpy (&buf[1], name);
+ *cp++= '|';
+ *cp = '\0';
+ return strstr (ent->blacklist.data, buf) != NULL;
+}
--- /dev/null
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1998.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <nss.h>
+#include <grp.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#include <rpcsvc/yp.h>
+#include <rpcsvc/ypclnt.h>
+
+#include "nss-nis.h"
+
+/* Get the declaration of the parser function. */
+#define ENTNAME grent
+#define STRUCTURE group
+#define EXTERN_PARSER
+#include <nss/nss_files/files-parse.c>
+
+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 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));
+ intern->next = intern->start;
+ }
+ else
+ {
+ intern->next->next = malloc (sizeof (struct response_t));
+ intern->next = intern->next->next;
+ }
+ intern->next->next = NULL;
+ intern->next->val = malloc (invallen + 1);
+ strncpy (intern->next->val, inval, invallen);
+ intern->next->val[invallen] = '\0';
+ }
+
+ return 0;
+}
+
+static enum nss_status
+internal_setgrent (intern_t *intern)
+{
+ char *domainname;
+ struct ypall_callback ypcb;
+ enum nss_status status;
+
+ if (yp_get_default_domain (&domainname))
+ return NSS_STATUS_UNAVAIL;
+
+ intern->start = NULL;
+
+ ypcb.foreach = saveit;
+ ypcb.data = (char *) intern;
+ status = yperr2nss (yp_all (domainname, "group.byname", &ypcb));
+ intern->next = intern->start;
+
+ return status;
+}
+
+static enum nss_status
+internal_getgrent_r (struct group *grp, char *buffer, size_t buflen,
+ int *errnop, intern_t *intern)
+{
+ struct parser_data *data = (void *) buffer;
+ int parse_res;
+ char *p;
+
+ if (intern->start == NULL)
+ internal_setgrent (intern);
+
+ /* Get the next entry until we found a correct one. */
+ do
+ {
+ if (intern->next == NULL)
+ return NSS_STATUS_NOTFOUND;
+ p = strncpy (buffer, intern->next->val, buflen);
+ while (isspace (*p))
+ ++p;
+
+ parse_res = _nss_files_parse_grent (p, grp, data, buflen, errnop);
+ if (parse_res == -1)
+ return NSS_STATUS_TRYAGAIN;
+ intern->next = intern->next->next;
+ }
+ while (!parse_res);
+
+ return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_initgroups (const char *user, gid_t group, long int *start,
+ long int *size, gid_t *groups, long int limit,
+ int *errnop)
+{
+ struct group grpbuf, *g;
+ size_t buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
+ char *tmpbuf;
+ enum nss_status status;
+ intern_t intern = { NULL, NULL };
+
+ status = internal_setgrent (&intern);
+ if (status != NSS_STATUS_SUCCESS)
+ return status;
+
+ tmpbuf = __alloca (buflen);
+
+ do
+ {
+ while ((status =
+ internal_getgrent_r (&grpbuf, tmpbuf, buflen, errnop,
+ &intern)) == NSS_STATUS_TRYAGAIN
+ && *errnop == ERANGE)
+ {
+ buflen *= 2;
+ tmpbuf = __alloca (buflen);
+ }
+
+ if (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 && limit <= 0)
+ {
+ /* Need a bigger buffer. */
+ groups = realloc (groups, *size * sizeof (*groups));
+ if (groups == NULL)
+ goto done;
+ *size *= 2;
+ }
+
+ groups[*start] = g->gr_gid;
+ *start += 1;
+
+ if (*start == limit)
+ /* Can't take any more groups; stop searching. */
+ goto done;
+
+ break;
+ }
+ }
+ }
+ while (status == NSS_STATUS_SUCCESS);
+
+done:
+ 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);
+ }
+
+ return NSS_STATUS_SUCCESS;
+}
projects / platform / upstream / glibc.git / commitdiff