diff options
Diffstat (limited to 'REORG.TODO/nis/nis_ismember.c')
| -rw-r--r-- | REORG.TODO/nis/nis_ismember.c | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/REORG.TODO/nis/nis_ismember.c b/REORG.TODO/nis/nis_ismember.c new file mode 100644 index 0000000000..5aba3367f5 --- /dev/null +++ b/REORG.TODO/nis/nis_ismember.c @@ -0,0 +1,150 @@ +/* Copyright (c) 1997-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Thorsten Kukuk <kukuk@suse.de>, 1997. + + 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 + <http://www.gnu.org/licenses/>. */ + +#include <string.h> +#include <rpcsvc/nis.h> +#include <shlib-compat.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) +{ + size_t grouplen = strlen (group); + char buf[grouplen + 50]; + char leafbuf[grouplen + 2]; + char domainbuf[grouplen + 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 && cp2[0] != '\0') + { + *cp++ = '.'; + strcpy (cp, cp2); + } + + res = nis_lookup (buf, EXPAND_NAME|FOLLOW_LINKS); + if (res == NULL || NIS_RES_STATUS (res) != NIS_SUCCESS) + { + nis_freeresult (res); + return 0; + } + + if ((NIS_RES_NUMOBJ (res) != 1) || + (__type_of (NIS_RES_OBJECT (res)) != NIS_GROUP_OBJ)) + { + nis_freeresult (res); + 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 < NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len; ++i) + { + cp = NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_val[i]; + if (cp[0] == '-') + { + if (strcmp (&cp[1], principal) == 0) + { + nis_freeresult (res); + return -1; + } + if (cp[1] == '@') + switch (internal_ismember (principal, &cp[2])) + { + case -1: + nis_freeresult (res); + return -1; + case 1: + nis_freeresult (res); + return 1; + default: + break; + } + else + if (cp[1] == '*') + { + char buf1[strlen (principal) + 2]; + char buf2[strlen (cp) + 2]; + + if (strcmp (nis_domain_of_r (principal, buf1, sizeof buf1), + nis_domain_of_r (cp, buf2, sizeof buf2)) == 0) + { + nis_freeresult (res); + return -1; + } + } + } + } + + for (i = 0; i < NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_len; ++i) + { + cp = NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_val[i]; + if (cp[0] != '-') + { + if (strcmp (cp, principal) == 0) + { + nis_freeresult (res); + return 1; + } + if (cp[0] == '@') + switch (internal_ismember (principal, &cp[1])) + { + case -1: + nis_freeresult (res); + return -1; + case 1: + nis_freeresult (res); + return 1; + default: + break; + } + else + if (cp[0] == '*') + { + char buf1[strlen (principal) + 2]; + char buf2[strlen (cp) + 2]; + + if (strcmp (nis_domain_of_r (principal, buf1, sizeof buf1), + nis_domain_of_r (cp, buf2, sizeof buf2)) == 0) + { + nis_freeresult (res); + return 1; + } + } + } + } + nis_freeresult (res); + return 0; +} + +bool_t +nis_ismember (const_nis_name principal, const_nis_name group) +{ + if (group != NULL && group[0] != '\0' && principal != NULL) + return internal_ismember (principal, group) == 1 ? TRUE : FALSE; + else + return FALSE; +} +libnsl_hidden_nolink_def (nis_ismember, GLIBC_2_1) |