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91eee4dd | 1 | /* Copyright (c) 1997, 1998 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 | |
6 | modify it under the terms of the GNU Library General Public License as | |
7 | published by the Free Software Foundation; either version 2 of the | |
8 | License, or (at your option) any later version. | |
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 | |
13 | Library General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Library General Public | |
16 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
18 | Boston, MA 02111-1307, USA. */ | |
19 | ||
20 | #include <errno.h> | |
21 | #include <string.h> | |
22 | #include <unistd.h> | |
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 | ||
30 | if (__nisgroup[0] == '\0') | |
31 | { | |
32 | char *cptr; | |
714a562f | 33 | char *cp; |
e61abf83 UD |
34 | |
35 | if ((cptr = getenv ("NIS_GROUP")) == NULL) | |
36 | return __nisgroup; | |
37 | ||
38 | if (strlen (cptr) >= NIS_MAXNAMELEN) | |
39 | return __nisgroup; | |
40 | ||
714a562f | 41 | cp = stpcpy (__nisgroup, cptr); |
e61abf83 | 42 | |
714a562f | 43 | if (cp[-1] != '.') |
e61abf83 UD |
44 | { |
45 | cptr = nis_local_directory (); | |
714a562f | 46 | if ((cp - __nisgroup) + strlen (cptr) + 1 < NIS_MAXNAMELEN) |
e61abf83 | 47 | { |
714a562f UD |
48 | *cp++ = '.'; |
49 | strcpy (cp, cptr); | |
e61abf83 UD |
50 | } |
51 | else | |
714a562f | 52 | __nisgroup[0] = '\0'; |
e61abf83 UD |
53 | } |
54 | } | |
55 | ||
56 | return __nisgroup; | |
57 | } | |
58 | ||
59 | ||
60 | nis_name | |
61 | nis_local_directory (void) | |
62 | { | |
63 | static char __nisdomainname[NIS_MAXNAMELEN + 1]; | |
e61abf83 UD |
64 | |
65 | if (__nisdomainname[0] == '\0') | |
66 | { | |
67 | if (getdomainname (__nisdomainname, NIS_MAXNAMELEN) < 0) | |
714a562f | 68 | __nisdomainname[0] = '\0'; |
e61abf83 UD |
69 | else |
70 | { | |
714a562f | 71 | char *cp = strchr (__nisdomainname, '\0'); |
e61abf83 UD |
72 | |
73 | /* Missing trailing dot? */ | |
714a562f | 74 | if (cp[-1] != '.') |
e61abf83 | 75 | { |
714a562f UD |
76 | *cp++ = '.'; |
77 | *cp = '\0'; | |
e61abf83 UD |
78 | } |
79 | } | |
80 | } | |
81 | ||
82 | return __nisdomainname; | |
83 | } | |
84 | ||
85 | nis_name | |
86 | nis_local_principal (void) | |
87 | { | |
88 | static char __principal[NIS_MAXNAMELEN + 1]; | |
89 | ||
90 | if (__principal[0] == '\0') | |
91 | { | |
92 | char buf[NIS_MAXNAMELEN + 1]; | |
93 | nis_result *res; | |
94 | uid_t uid = geteuid (); | |
95 | ||
96 | if (uid != 0) | |
97 | { | |
714a562f UD |
98 | int len = snprintf (buf, NIS_MAXNAMELEN - 1, |
99 | "[auth_name=%d,auth_type=LOCAL],cred.org_dir.%s", | |
100 | uid, nis_local_directory ()); | |
101 | ||
102 | if (len >= NIS_MAXNAMELEN - 1) | |
103 | /* XXX The buffer is too small. Can this happen??? */ | |
104 | return strcpy (__principal, "nobody"); | |
e61abf83 | 105 | |
714a562f UD |
106 | if (buf[len - 1] != '.') |
107 | { | |
108 | buf[len++] = '.'; | |
109 | buf[len] = '\0'; | |
110 | } | |
e61abf83 UD |
111 | |
112 | res = nis_list (buf, USE_DGRAM + NO_AUTHINFO + FOLLOW_LINKS + | |
113 | FOLLOW_PATH, NULL, NULL); | |
114 | ||
115 | if (res == NULL) | |
714a562f | 116 | return strcpy (__principal, "nobody"); |
e61abf83 | 117 | |
91eee4dd | 118 | if (NIS_RES_STATUS (res) == NIS_SUCCESS) |
e61abf83 UD |
119 | { |
120 | if (res->objects.objects_len > 1) | |
121 | { | |
122 | /* More than one principal with same uid? something | |
714a562f | 123 | wrong with cred table. Should be unique. Warn user |
e61abf83 UD |
124 | and continue. */ |
125 | printf (_("\ | |
126 | LOCAL entry for UID %d in directory %s not unique\n"), | |
127 | uid, nis_local_directory ()); | |
128 | } | |
129 | strcpy (__principal, ENTRY_VAL (res->objects.objects_val, 0)); | |
130 | nis_freeresult (res); | |
131 | return __principal; | |
132 | } | |
133 | else | |
134 | { | |
135 | nis_freeresult (res); | |
714a562f | 136 | return strcpy (__principal, "nobody"); |
e61abf83 UD |
137 | } |
138 | } | |
139 | else | |
714a562f | 140 | return strcpy (__principal, nis_local_host ()); |
e61abf83 UD |
141 | |
142 | /* Should be never reached */ | |
714a562f | 143 | return strcpy (__principal, "nobody"); |
e61abf83 UD |
144 | } |
145 | return __principal; | |
146 | } | |
147 | ||
148 | nis_name | |
149 | nis_local_host (void) | |
150 | { | |
151 | static char __nishostname[NIS_MAXNAMELEN + 1]; | |
e61abf83 UD |
152 | |
153 | if (__nishostname[0] == '\0') | |
154 | { | |
e61abf83 | 155 | if (gethostname (__nishostname, NIS_MAXNAMELEN) < 0) |
3e5f5557 UD |
156 | __nishostname[0] = '\0'; |
157 | else | |
158 | { | |
714a562f UD |
159 | char *cp = strchr (__nishostname, '\0'); |
160 | int len = cp - __nishostname; | |
e61abf83 | 161 | |
3e5f5557 | 162 | /* Hostname already fully qualified? */ |
714a562f | 163 | if (cp[-1] == '.') |
3e5f5557 | 164 | return __nishostname; |
e61abf83 | 165 | |
714a562f | 166 | if (len + strlen (nis_local_directory ()) + 1 > NIS_MAXNAMELEN) |
3e5f5557 UD |
167 | { |
168 | __nishostname[0] = '\0'; | |
169 | return __nishostname; | |
170 | } | |
e61abf83 | 171 | |
3e5f5557 UD |
172 | *cp++ = '.'; |
173 | strncpy (cp, nis_local_directory (), NIS_MAXNAMELEN - len -1); | |
174 | __nishostname[NIS_MAXNAMELEN] = '\0'; | |
e61abf83 | 175 | } |
e61abf83 UD |
176 | } |
177 | ||
178 | return __nishostname; | |
179 | } |