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f7a9f785 | 1 | /* Copyright (c) 1997-2016 Free Software Foundation, Inc. |
e61abf83 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
e61abf83 UD |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
e61abf83 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
e61abf83 UD |
18 | |
19 | #include <errno.h> | |
20 | #include <string.h> | |
21 | #include <unistd.h> | |
4360eafd | 22 | #include <libintl.h> |
e61abf83 | 23 | #include <rpcsvc/nis.h> |
e61abf83 UD |
24 | |
25 | nis_name | |
26 | nis_local_group (void) | |
27 | { | |
28 | static char __nisgroup[NIS_MAXNAMELEN + 1]; | |
29 | ||
7440c23e UD |
30 | char *cptr; |
31 | if (__nisgroup[0] == '\0' | |
32 | && (cptr = getenv ("NIS_GROUP")) != NULL | |
33 | && strlen (cptr) < NIS_MAXNAMELEN) | |
e61abf83 | 34 | { |
7440c23e | 35 | char *cp = stpcpy (__nisgroup, cptr); |
e61abf83 | 36 | |
714a562f | 37 | if (cp[-1] != '.') |
e61abf83 UD |
38 | { |
39 | cptr = nis_local_directory (); | |
714a562f | 40 | if ((cp - __nisgroup) + strlen (cptr) + 1 < NIS_MAXNAMELEN) |
e61abf83 | 41 | { |
714a562f UD |
42 | *cp++ = '.'; |
43 | strcpy (cp, cptr); | |
e61abf83 UD |
44 | } |
45 | else | |
714a562f | 46 | __nisgroup[0] = '\0'; |
e61abf83 UD |
47 | } |
48 | } | |
49 | ||
50 | return __nisgroup; | |
51 | } | |
7440c23e | 52 | libnsl_hidden_def (nis_local_group) |
e61abf83 UD |
53 | |
54 | nis_name | |
55 | nis_local_directory (void) | |
56 | { | |
57 | static char __nisdomainname[NIS_MAXNAMELEN + 1]; | |
e61abf83 UD |
58 | |
59 | if (__nisdomainname[0] == '\0') | |
60 | { | |
61 | if (getdomainname (__nisdomainname, NIS_MAXNAMELEN) < 0) | |
714a562f | 62 | __nisdomainname[0] = '\0'; |
e61abf83 UD |
63 | else |
64 | { | |
616d9133 | 65 | char *cp = rawmemchr (__nisdomainname, '\0'); |
e61abf83 UD |
66 | |
67 | /* Missing trailing dot? */ | |
714a562f | 68 | if (cp[-1] != '.') |
e61abf83 | 69 | { |
714a562f UD |
70 | *cp++ = '.'; |
71 | *cp = '\0'; | |
e61abf83 UD |
72 | } |
73 | } | |
74 | } | |
75 | ||
76 | return __nisdomainname; | |
77 | } | |
7440c23e | 78 | libnsl_hidden_def (nis_local_directory) |
e61abf83 UD |
79 | |
80 | nis_name | |
81 | nis_local_principal (void) | |
82 | { | |
83 | static char __principal[NIS_MAXNAMELEN + 1]; | |
84 | ||
85 | if (__principal[0] == '\0') | |
86 | { | |
87 | char buf[NIS_MAXNAMELEN + 1]; | |
88 | nis_result *res; | |
89 | uid_t uid = geteuid (); | |
90 | ||
91 | if (uid != 0) | |
92 | { | |
714a562f UD |
93 | int len = snprintf (buf, NIS_MAXNAMELEN - 1, |
94 | "[auth_name=%d,auth_type=LOCAL],cred.org_dir.%s", | |
95 | uid, nis_local_directory ()); | |
96 | ||
97 | if (len >= NIS_MAXNAMELEN - 1) | |
7440c23e | 98 | nobody: |
714a562f UD |
99 | /* XXX The buffer is too small. Can this happen??? */ |
100 | return strcpy (__principal, "nobody"); | |
e61abf83 | 101 | |
714a562f UD |
102 | if (buf[len - 1] != '.') |
103 | { | |
104 | buf[len++] = '.'; | |
105 | buf[len] = '\0'; | |
106 | } | |
e61abf83 UD |
107 | |
108 | res = nis_list (buf, USE_DGRAM + NO_AUTHINFO + FOLLOW_LINKS + | |
109 | FOLLOW_PATH, NULL, NULL); | |
110 | ||
111 | if (res == NULL) | |
7440c23e | 112 | goto nobody; |
e61abf83 | 113 | |
91eee4dd | 114 | if (NIS_RES_STATUS (res) == NIS_SUCCESS) |
e61abf83 UD |
115 | { |
116 | if (res->objects.objects_len > 1) | |
117 | { | |
118 | /* More than one principal with same uid? something | |
714a562f | 119 | wrong with cred table. Should be unique. Warn user |
e61abf83 UD |
120 | and continue. */ |
121 | printf (_("\ | |
122 | LOCAL entry for UID %d in directory %s not unique\n"), | |
123 | uid, nis_local_directory ()); | |
124 | } | |
125 | strcpy (__principal, ENTRY_VAL (res->objects.objects_val, 0)); | |
126 | nis_freeresult (res); | |
127 | return __principal; | |
128 | } | |
129 | else | |
130 | { | |
131 | nis_freeresult (res); | |
7440c23e | 132 | goto nobody; |
e61abf83 UD |
133 | } |
134 | } | |
135 | else | |
714a562f | 136 | return strcpy (__principal, nis_local_host ()); |
e61abf83 UD |
137 | |
138 | /* Should be never reached */ | |
7440c23e | 139 | goto nobody; |
e61abf83 UD |
140 | } |
141 | return __principal; | |
142 | } | |
7440c23e | 143 | libnsl_hidden_def (nis_local_principal) |
e61abf83 UD |
144 | |
145 | nis_name | |
146 | nis_local_host (void) | |
147 | { | |
148 | static char __nishostname[NIS_MAXNAMELEN + 1]; | |
e61abf83 UD |
149 | |
150 | if (__nishostname[0] == '\0') | |
151 | { | |
e61abf83 | 152 | if (gethostname (__nishostname, NIS_MAXNAMELEN) < 0) |
3e5f5557 UD |
153 | __nishostname[0] = '\0'; |
154 | else | |
155 | { | |
616d9133 | 156 | char *cp = rawmemchr (__nishostname, '\0'); |
714a562f | 157 | int len = cp - __nishostname; |
e61abf83 | 158 | |
3e5f5557 | 159 | /* Hostname already fully qualified? */ |
714a562f | 160 | if (cp[-1] == '.') |
3e5f5557 | 161 | return __nishostname; |
e61abf83 | 162 | |
714a562f | 163 | if (len + strlen (nis_local_directory ()) + 1 > NIS_MAXNAMELEN) |
3e5f5557 UD |
164 | { |
165 | __nishostname[0] = '\0'; | |
166 | return __nishostname; | |
167 | } | |
e61abf83 | 168 | |
3e5f5557 UD |
169 | *cp++ = '.'; |
170 | strncpy (cp, nis_local_directory (), NIS_MAXNAMELEN - len -1); | |
171 | __nishostname[NIS_MAXNAMELEN] = '\0'; | |
e61abf83 | 172 | } |
e61abf83 UD |
173 | } |
174 | ||
175 | return __nishostname; | |
176 | } | |
7440c23e | 177 | libnsl_hidden_def (nis_local_host) |