| /* Copyright (c) 1997-2014 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 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 <errno.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <libintl.h> |
| #include <rpcsvc/nis.h> |
| |
| nis_name |
| nis_local_group (void) |
| { |
| static char __nisgroup[NIS_MAXNAMELEN + 1]; |
| |
| char *cptr; |
| if (__nisgroup[0] == '\0' |
| && (cptr = getenv ("NIS_GROUP")) != NULL |
| && strlen (cptr) < NIS_MAXNAMELEN) |
| { |
| char *cp = stpcpy (__nisgroup, cptr); |
| |
| if (cp[-1] != '.') |
| { |
| cptr = nis_local_directory (); |
| if ((cp - __nisgroup) + strlen (cptr) + 1 < NIS_MAXNAMELEN) |
| { |
| *cp++ = '.'; |
| strcpy (cp, cptr); |
| } |
| else |
| __nisgroup[0] = '\0'; |
| } |
| } |
| |
| return __nisgroup; |
| } |
| libnsl_hidden_def (nis_local_group) |
| |
| nis_name |
| nis_local_directory (void) |
| { |
| static char __nisdomainname[NIS_MAXNAMELEN + 1]; |
| |
| if (__nisdomainname[0] == '\0') |
| { |
| if (getdomainname (__nisdomainname, NIS_MAXNAMELEN) < 0) |
| __nisdomainname[0] = '\0'; |
| else |
| { |
| char *cp = rawmemchr (__nisdomainname, '\0'); |
| |
| /* Missing trailing dot? */ |
| if (cp[-1] != '.') |
| { |
| *cp++ = '.'; |
| *cp = '\0'; |
| } |
| } |
| } |
| |
| return __nisdomainname; |
| } |
| libnsl_hidden_def (nis_local_directory) |
| |
| nis_name |
| nis_local_principal (void) |
| { |
| static char __principal[NIS_MAXNAMELEN + 1]; |
| |
| if (__principal[0] == '\0') |
| { |
| char buf[NIS_MAXNAMELEN + 1]; |
| nis_result *res; |
| uid_t uid = geteuid (); |
| |
| if (uid != 0) |
| { |
| int len = snprintf (buf, NIS_MAXNAMELEN - 1, |
| "[auth_name=%d,auth_type=LOCAL],cred.org_dir.%s", |
| uid, nis_local_directory ()); |
| |
| if (len >= NIS_MAXNAMELEN - 1) |
| nobody: |
| /* XXX The buffer is too small. Can this happen??? */ |
| return strcpy (__principal, "nobody"); |
| |
| if (buf[len - 1] != '.') |
| { |
| buf[len++] = '.'; |
| buf[len] = '\0'; |
| } |
| |
| res = nis_list (buf, USE_DGRAM + NO_AUTHINFO + FOLLOW_LINKS + |
| FOLLOW_PATH, NULL, NULL); |
| |
| if (res == NULL) |
| goto nobody; |
| |
| if (NIS_RES_STATUS (res) == NIS_SUCCESS) |
| { |
| if (res->objects.objects_len > 1) |
| { |
| /* More than one principal with same uid? something |
| wrong with cred table. Should be unique. Warn user |
| and continue. */ |
| printf (_("\ |
| LOCAL entry for UID %d in directory %s not unique\n"), |
| uid, nis_local_directory ()); |
| } |
| strcpy (__principal, ENTRY_VAL (res->objects.objects_val, 0)); |
| nis_freeresult (res); |
| return __principal; |
| } |
| else |
| { |
| nis_freeresult (res); |
| goto nobody; |
| } |
| } |
| else |
| return strcpy (__principal, nis_local_host ()); |
| |
| /* Should be never reached */ |
| goto nobody; |
| } |
| return __principal; |
| } |
| libnsl_hidden_def (nis_local_principal) |
| |
| nis_name |
| nis_local_host (void) |
| { |
| static char __nishostname[NIS_MAXNAMELEN + 1]; |
| |
| if (__nishostname[0] == '\0') |
| { |
| if (gethostname (__nishostname, NIS_MAXNAMELEN) < 0) |
| __nishostname[0] = '\0'; |
| else |
| { |
| char *cp = rawmemchr (__nishostname, '\0'); |
| int len = cp - __nishostname; |
| |
| /* Hostname already fully qualified? */ |
| if (cp[-1] == '.') |
| return __nishostname; |
| |
| if (len + strlen (nis_local_directory ()) + 1 > NIS_MAXNAMELEN) |
| { |
| __nishostname[0] = '\0'; |
| return __nishostname; |
| } |
| |
| *cp++ = '.'; |
| strncpy (cp, nis_local_directory (), NIS_MAXNAMELEN - len -1); |
| __nishostname[NIS_MAXNAMELEN] = '\0'; |
| } |
| } |
| |
| return __nishostname; |
| } |
| libnsl_hidden_def (nis_local_host) |
