diff options
Diffstat (limited to 'nis/nss_nisplus/nisplus-grp.c')
| -rw-r--r-- | nis/nss_nisplus/nisplus-grp.c | 387 |
1 files changed, 387 insertions, 0 deletions
diff --git a/nis/nss_nisplus/nisplus-grp.c b/nis/nss_nisplus/nisplus-grp.c new file mode 100644 index 0000000000..2e56afa6fc --- /dev/null +++ b/nis/nss_nisplus/nisplus-grp.c @@ -0,0 +1,387 @@ +/* Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997. + + 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 <libc-lock.h> +#include <rpcsvc/nis.h> +#include <rpcsvc/nislib.h> + +#include "nss-nisplus.h" + +__libc_lock_define_initialized (static, lock); + +static nis_result *result = NULL; +static nis_name *names = NULL; + +#define NISENTRYVAL(idx,col,res) \ +((res)->objects.objects_val[(idx)].zo_data.objdata_u.en_data.en_cols.en_cols_val[(col)].ec_value.ec_value_val) + +#define NISENTRYLEN(idx,col,res) \ + ((res)->objects.objects_val[(idx)].zo_data.objdata_u.en_data.en_cols.en_cols_val[(col)].ec_value.ec_value_len) + +#define STRUCTURE group +#define ENTNAME grent +struct grent_data {}; + +#define TRAILING_LIST_MEMBER gr_mem +#define TRAILING_LIST_SEPARATOR_P(c) ((c) == ',') +#include "../../nss/nss_files/files-parse.c" +LINE_PARSER +(, + STRING_FIELD (result->gr_name, ISCOLON, 0); + if (line[0] == '\0' + && (result->gr_name[0] == '+' || result->gr_name[0] == '-')) + { + result->gr_passwd = NULL; + result->gr_gid = 0; + } + else + { + STRING_FIELD (result->gr_passwd, ISCOLON, 0); + if (result->gr_name[0] == '+' || result->gr_name[0] == '-') + INT_FIELD_MAYBE_NULL (result->gr_gid, ISCOLON, 0, 10, , 0) + else + INT_FIELD (result->gr_gid, ISCOLON, 0, 10,) + } + ) + +static int +_nss_nisplus_parse_grent (nis_result * result, struct group *gr, + char *buffer, size_t buflen) +{ +#if 0 + /* XXX here is a bug, sometimes we get some special characters at the + end of a line */ + char *first_unused = buffer; + size_t room_left = buflen; + char *line; + int count; + + if (result == NULL) + return -1; + + if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS) || + result->objects.objects_len != 1 || + result->objects.objects_val[0].zo_data.zo_type != ENTRY_OBJ || + strcmp (result->objects.objects_val[0].zo_data.objdata_u.en_data.en_type, + "group_tbl") != 0 || + result->objects.objects_val[0].zo_data.objdata_u.en_data.en_cols.en_cols_len < 4) + return -1; + + if (NISENTRYLEN (0, 0, result) >= room_left) + { + /* The line is too long for our buffer. */ + no_more_room: + __set_errno (ERANGE); + return -1; + } + + strncpy (first_unused, NISENTRYVAL (0, 0, result), + NISENTRYLEN (0, 0, result)); + first_unused[NISENTRYLEN (0, 0, result)] = '\0'; + gr->gr_name = first_unused; + room_left -= (strlen (first_unused) + 1); + first_unused += strlen (first_unused) + 1; + + if (NISENTRYLEN (0, 1, result) >= room_left) + goto no_more_room; + + strncpy (first_unused, NISENTRYVAL (0, 1, result), + NISENTRYLEN (0, 1, result)); + first_unused[NISENTRYLEN (0, 1, result)] = '\0'; + gr->gr_passwd = first_unused; + room_left -= (strlen (first_unused) + 1); + first_unused += strlen (first_unused) + 1; + + if (NISENTRYLEN (0, 2, result) >= room_left) + goto no_more_room; + + strncpy (first_unused, NISENTRYVAL (0, 2, result), + NISENTRYLEN (0, 2, result)); + first_unused[NISENTRYLEN (0, 2, result)] = '\0'; + gr->gr_gid = atoi (first_unused); + room_left -= (strlen (first_unused) + 1); + first_unused += strlen (first_unused) + 1; + + if (NISENTRYLEN (0, 3, result) >= room_left) + goto no_more_room; + + strncpy (first_unused, NISENTRYVAL (0, 3, result), + NISENTRYLEN (0, 3, result)); + first_unused[NISENTRYLEN (0, 3, result)] = '\0'; + line = first_unused; + room_left -= (strlen (line) + 1); + first_unused += strlen (line) + 1; + /* Adjust the pointer so it is aligned for + storing pointers. */ + first_unused += __alignof__ (char *) - 1; + first_unused -= ((first_unused - (char *) 0) % __alignof__ (char *)); + gr->gr_mem = (char **) first_unused; + + count = 0; + while (*line != '\0') + { + /* Skip leading blanks. */ + while (isspace (*line)) + ++line; + + if (*line == '\0') + break; + + if (room_left < sizeof (char *)) + goto no_more_room; + room_left -= sizeof (char *); + gr->gr_mem[count] = line; + + while (*line != '\0' && *line != ',' && !isspace(*line)) + ++line; + + if (line != gr->gr_mem[count]) + { + *line = '\0'; + ++line; + ++count; + } + else + gr->gr_mem[count] = NULL; + } + if (room_left < sizeof (char *)) + goto no_more_room; + room_left -= sizeof (char *); + gr->gr_mem[count] = NULL; + + return 1; +#else + char *p = buffer; + size_t room_left = buflen; + struct parser_data *data = (void *) buffer; + + if (result == NULL) + return -1; + + if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS) || + result->objects.objects_len != 1 || + result->objects.objects_val[0].zo_data.zo_type != ENTRY_OBJ || + strcmp (result->objects.objects_val[0].zo_data.objdata_u.en_data.en_type, + "group_tbl") != 0 || + result->objects.objects_val[0].zo_data.objdata_u.en_data.en_cols.en_cols_len < 4) + return -1; + + memset (p, '\0', room_left); + + if (NISENTRYLEN (0, 0, result) + 1 > room_left) + { + __set_errno (ERANGE); + return -1; + } + strncpy (p, NISENTRYVAL (0, 0, result), NISENTRYLEN (0, 0, result)); + room_left -= (NISENTRYLEN (0, 0, result) + 1); + strcat (p, ":"); + + if (NISENTRYLEN (0, 1, result) + 1 > room_left) + { + __set_errno (ERANGE); + return -1; + } + strncat (p, NISENTRYVAL (0, 1, result), NISENTRYLEN (0, 1, result)); + room_left -= (NISENTRYLEN (0, 1, result) + 1); + strcat (p, ":"); + if (NISENTRYLEN (0, 2, result) + 1 > room_left) + { + __set_errno (ERANGE); + return -1; + } + strncat (p, NISENTRYVAL (0, 2, result), NISENTRYLEN (0, 2, result)); + room_left -= (NISENTRYLEN (0, 2, result) + 1); + strcat (p, ":"); + if (NISENTRYLEN (0, 3, result) + 1 > room_left) + { + __set_errno (ERANGE); + return -1; + } + strncat (p, NISENTRYVAL (0, 3, result), NISENTRYLEN (0, 3, result)); + room_left -= (NISENTRYLEN (0, 3, result) + 1); + + return _nss_files_parse_grent (p, gr, data, buflen); +#endif +} + +enum nss_status +_nss_nisplus_setgrent (void) +{ + __libc_lock_lock (lock); + + if (result) + nis_freeresult (result); + result = NULL; + if (names) + { + nis_freenames (names); + names = NULL; + } + + __libc_lock_unlock (lock); + + return NSS_STATUS_SUCCESS; +} + +enum nss_status +_nss_nisplus_endgrent (void) +{ + __libc_lock_lock (lock); + + if (result) + nis_freeresult (result); + result = NULL; + if (names) + { + nis_freenames (names); + names = NULL; + } + + __libc_lock_unlock (lock); + + return NSS_STATUS_SUCCESS; +} + +static enum nss_status +internal_nisplus_getgrent_r (struct group *gr, char *buffer, size_t buflen) +{ + int parse_res; + + /* Get the next entry until we found a correct one. */ + do + { + if (result == NULL) + { + names = nis_getnames ("group.org_dir"); + if (names == NULL || names[0] == NULL) + return NSS_STATUS_UNAVAIL; + + result = nis_first_entry (names[0]); + if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) + return niserr2nss (result->status); + } + else + { + nis_result *res; + + res = nis_next_entry (names[0], &result->cookie); + nis_freeresult (result); + result = res; + if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) + return niserr2nss (result->status); + } + + parse_res = _nss_nisplus_parse_grent (result, gr, buffer, buflen); + } + while (!parse_res); + + return NSS_STATUS_SUCCESS; +} + +enum nss_status +_nss_nisplus_getgrent_r (struct group *result, char *buffer, size_t buflen) +{ + int status; + + __libc_lock_lock (lock); + + status = internal_nisplus_getgrent_r (result, buffer, buflen); + + __libc_lock_unlock (lock); + + return status; +} + +enum nss_status +_nss_nisplus_getgrnam_r (const char *name, struct group *gr, + char *buffer, size_t buflen) +{ + int parse_res; + + if (name == NULL || strlen (name) > 8) + return NSS_STATUS_NOTFOUND; + else + { + nis_result *result; + char buf[strlen (name) + 24]; + + sprintf (buf, "[name=%s],group.org_dir", name); + + result = nis_list (buf, EXPAND_NAME, NULL, NULL); + + if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) + { + enum nss_status status = niserr2nss (result->status); + + nis_freeresult (result); + return status; + } + + parse_res = _nss_nisplus_parse_grent (result, gr, buffer, buflen); + + nis_freeresult (result); + + if (parse_res) + return NSS_STATUS_SUCCESS; + + if (!parse_res && errno == ERANGE) + return NSS_STATUS_TRYAGAIN; + else + return NSS_STATUS_NOTFOUND; + } +} + +enum nss_status +_nss_nisplus_getgrgid_r (const gid_t gid, struct group *gr, + char *buffer, size_t buflen) +{ + int parse_res; + nis_result *result; + char buf[36]; + + sprintf (buf, "[gid=%d],group.org_dir", gid); + + result = nis_list (buf, EXPAND_NAME, NULL, NULL); + + if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) + { + enum nss_status status = niserr2nss (result->status); + + nis_freeresult (result); + return status; + } + + parse_res = _nss_nisplus_parse_grent (result, gr, buffer, buflen); + + nis_freeresult (result); + + if (parse_res) + return NSS_STATUS_SUCCESS; + + if (!parse_res && errno == ERANGE) + return NSS_STATUS_TRYAGAIN; + else + return NSS_STATUS_NOTFOUND; +} |