diff options
Diffstat (limited to 'nis/nis_ismember.c')
| -rw-r--r-- | nis/nis_ismember.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/nis/nis_ismember.c b/nis/nis_ismember.c new file mode 100644 index 0000000000..f0d087ca51 --- /dev/null +++ b/nis/nis_ismember.c @@ -0,0 +1,142 @@ +/* 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 <string.h> +#include <rpcsvc/nis.h> +#include <rpcsvc/nislib.h> + +/* internal_nis_ismember () + return codes: -1 principal is in -group + 0 principal isn't in any group + 1 pirncipal is in group */ +static int +internal_ismember (const_nis_name principal, const_nis_name group) +{ + if (group != NULL && strlen (group) > 0) + { + char buf[strlen (group) + 50]; + char leafbuf[strlen (group) + 2]; + char domainbuf[strlen (group) + 2]; + nis_result *res; + char *cp, *cp2; + u_int i; + + cp = stpcpy (buf, nis_leaf_of_r (group, leafbuf, sizeof (leafbuf) - 1)); + cp = stpcpy (cp, ".groups_dir"); + cp2 = nis_domain_of_r (group, domainbuf, sizeof (domainbuf) - 1); + if (cp2 != NULL && strlen (cp2) > 0) + { + cp = stpcpy (cp, "."); + strcpy (cp, cp2); + } + res = nis_lookup (buf, EXPAND_NAME|FOLLOW_LINKS); + if (res->status != NIS_SUCCESS && res->status != NIS_S_SUCCESS) + return 0; + + if ((res->objects.objects_len != 1) || + (res->objects.objects_val[0].zo_data.zo_type != GROUP_OBJ)) + return 0; + + /* We search twice in the list, at first, if we have the name + with a "-", then if without. "-member" has priority */ + for (i = 0; + i < res->objects.objects_val[0].GR_data.gr_members.gr_members_len; + ++i) + { + cp =res->objects.objects_val[0].GR_data.gr_members.gr_members_val[i]; + if (cp[0] == '-') + { + if (strcmp (&cp[1], principal) == 0) + return -1; + if (cp[1] == '@') + switch (internal_ismember (principal, &cp[2])) + { + case -1: + return -1; + case 1: + return -1; + default: + break; + } + else + if (cp[1] == '*') + { + char buf1[strlen (principal) + 2]; + char buf2[strlen (cp) + 2]; + + strcpy (buf1, nis_domain_of (principal)); + strcpy (buf2, nis_domain_of (cp)); + if (strcmp (buf1, buf2) == 0) + return -1; + } + } + } + for (i = 0; + i < res->objects.objects_val[0].GR_data.gr_members.gr_members_len; + ++i) + { + cp =res->objects.objects_val[0].GR_data.gr_members.gr_members_val[i]; + if (cp[0] != '-') + { + if (strcmp (cp, principal) == 0) + return 1; + if (cp[0] == '@') + switch (internal_ismember (principal, &cp[1])) + { + case -1: + return -1; + case 1: + return 1; + default: + break; + } + else + if (cp[0] == '*') + { + char buf1[strlen (principal) + 2]; + char buf2[strlen (cp) + 2]; + + strcpy (buf1, nis_domain_of (principal)); + strcpy (buf2, nis_domain_of (cp)); + if (strcmp (buf1, buf2) == 0) + return 1; + } + } + } + } + + return 0; +} + +bool_t +nis_ismember (const_nis_name principal, const_nis_name group) +{ + if (group != NULL && strlen (group) > 0) + { + int status; + + status = internal_ismember (principal, group); + if (status == 1) + return TRUE; + else + return FALSE; + } + else + return FALSE; +} |