diff options
Diffstat (limited to 'nis/nis_local_names.c')
| -rw-r--r-- | nis/nis_local_names.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/nis/nis_local_names.c b/nis/nis_local_names.c new file mode 100644 index 0000000000..50120a6f73 --- /dev/null +++ b/nis/nis_local_names.c @@ -0,0 +1,184 @@ +/* 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 <errno.h> +#include <string.h> +#include <unistd.h> +#include <rpcsvc/nis.h> +#include <rpcsvc/nislib.h> + +nis_name +nis_local_group (void) +{ + static char __nisgroup[NIS_MAXNAMELEN + 1]; + + if (__nisgroup[0] == '\0') + { + char *cptr; + + if ((cptr = getenv ("NIS_GROUP")) == NULL) + return __nisgroup; + + if (strlen (cptr) >= NIS_MAXNAMELEN) + return __nisgroup; + + strcpy (__nisgroup, cptr); + + if (__nisgroup[strlen (__nisgroup) - 1] != '.') + { + cptr = nis_local_directory (); + if (strlen (__nisgroup) + strlen (cptr) + 1 < NIS_MAXNAMELEN) + { + strcat (__nisgroup, "."); + strcat (__nisgroup, cptr); + } + else + { + __nisgroup[0] = '\0'; + return __nisgroup; + } + } + } + + return __nisgroup; +} + + +nis_name +nis_local_directory (void) +{ + static char __nisdomainname[NIS_MAXNAMELEN + 1]; + int len; + + if (__nisdomainname[0] == '\0') + { + if (getdomainname (__nisdomainname, NIS_MAXNAMELEN) < 0) + strcpy (__nisdomainname, "\0"); + else + { + len = strlen (__nisdomainname); + + /* Missing trailing dot? */ + if (__nisdomainname[len - 1] != '.') + { + __nisdomainname[len] = '.'; + __nisdomainname[len + 1] = '\0'; + } + } + } + + return __nisdomainname; +} + +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) + { + snprintf (buf, NIS_MAXNAMELEN - 1, + "[auth_name=%d,auth_type=LOCAL],cred.org_dir.%s", + uid, nis_local_directory ()); + + if (buf[strlen (buf) - 1] != '.') + strcat (buf, "."); + + res = nis_list (buf, USE_DGRAM + NO_AUTHINFO + FOLLOW_LINKS + + FOLLOW_PATH, NULL, NULL); + + if (res == NULL) + { + strcpy (__principal, "nobody"); + return __principal; + } + + if (res->status == 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); + strcpy (__principal, "nobody"); + return __principal; + } + } + else + { + strcpy (__principal, nis_local_host ()); + return __principal; + } + + /* Should be never reached */ + strcpy (__principal, "nobody"); + return __principal; + } + return __principal; +} + +nis_name +nis_local_host (void) +{ + static char __nishostname[NIS_MAXNAMELEN + 1]; + int len; + + if (__nishostname[0] == '\0') + { + char *cp = __nishostname; + + if (gethostname (__nishostname, NIS_MAXNAMELEN) < 0) + cp = stpcpy (cp, "\0"); + + len = cp - __nishostname; + + /* Hostname already fully qualified? */ + if (__nishostname[len - 1] == '.') + return __nishostname; + + if (strlen (__nishostname + strlen (nis_local_directory ()) + 1) > + NIS_MAXNAMELEN) + { + __nishostname[0] = '\0'; + return __nishostname; + } + + *cp++ = '.'; + stpcpy (cp, nis_local_directory ()); + } + + return __nishostname; +} |