]>
Commit | Line | Data |
---|---|---|
2b778ceb | 1 | /* Copyright (C) 1996-2021 Free Software Foundation, Inc. |
2303f5fd UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. | |
5f0e6fc7 | 4 | |
2303f5fd | 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. | |
5f0e6fc7 | 9 | |
2303f5fd UD |
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. |
5f0e6fc7 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
5f0e6fc7 RM |
18 | |
19 | #include <ctype.h> | |
20 | #include <dlfcn.h> | |
a8874ead | 21 | #include <errno.h> |
5f0e6fc7 | 22 | #include <netdb.h> |
ec999b8e | 23 | #include <libc-lock.h> |
5f0e6fc7 RM |
24 | #include <search.h> |
25 | #include <stdio.h> | |
2706ee38 | 26 | #include <stdio_ext.h> |
5f0e6fc7 RM |
27 | #include <stdlib.h> |
28 | #include <string.h> | |
5107cf1d | 29 | |
7f28638c AJ |
30 | #include <aliases.h> |
31 | #include <grp.h> | |
32 | #include <netinet/ether.h> | |
33 | #include <pwd.h> | |
34 | #include <shadow.h> | |
f8847d83 | 35 | #include <unistd.h> |
7f28638c | 36 | |
b5567b2a | 37 | #if !defined DO_STATIC_NSS || defined SHARED |
5107cf1d UD |
38 | # include <gnu/lib-names.h> |
39 | #endif | |
5f0e6fc7 RM |
40 | |
41 | #include "nsswitch.h" | |
ef4d5b32 | 42 | #include "../nscd/nscd_proto.h" |
319b9ad4 | 43 | #include <sysdep.h> |
a1a78204 SE |
44 | #include <config.h> |
45 | ||
a8874ead UD |
46 | /* Declare external database variables. */ |
47 | #define DEFINE_DATABASE(name) \ | |
f8847d83 | 48 | nss_action_list __nss_##name##_database attribute_hidden; \ |
a8874ead UD |
49 | weak_extern (__nss_##name##_database) |
50 | #include "databases.def" | |
51 | #undef DEFINE_DATABASE | |
52 | ||
f8847d83 | 53 | |
a8874ead | 54 | #undef DEFINE_DATABASE |
f8847d83 DD |
55 | #define DEFINE_DATABASE(name) #name, |
56 | static const char * database_names[] = { | |
57 | #include "databases.def" | |
58 | NULL | |
a8874ead UD |
59 | }; |
60 | ||
1dbbb1ec | 61 | #ifdef USE_NSCD |
c3e2f19b UD |
62 | /* Flags whether custom rules for database is set. */ |
63 | bool __nss_database_custom[NSS_DBSIDX_max]; | |
1dbbb1ec | 64 | #endif |
c3e2f19b | 65 | |
a8874ead | 66 | |
f8847d83 | 67 | /*__libc_lock_define_initialized (static, lock)*/ |
319b9ad4 | 68 | |
5f0e6fc7 RM |
69 | /* -1 == database not found |
70 | 0 == database entry pointer stored */ | |
71 | int | |
a9368c34 | 72 | __nss_database_lookup2 (const char *database, const char *alternate_name, |
f8847d83 | 73 | const char *defconfig, nss_action_list *ni) |
5f0e6fc7 | 74 | { |
f8847d83 | 75 | int database_id; |
bba7bb78 | 76 | |
f8847d83 DD |
77 | for (database_id = 0; database_names[database_id]; database_id++) |
78 | if (strcmp (database_names[database_id], database) == 0) | |
79 | break; | |
a8874ead | 80 | |
f8847d83 DD |
81 | if (database_names[database_id] == NULL) |
82 | return -1; | |
5f0e6fc7 | 83 | |
d2e929a9 DD |
84 | /* If *NI is NULL, the database was not mentioned in nsswitch.conf. |
85 | If *NI is not NULL, but *NI->module is NULL, the database was in | |
86 | nsswitch.conf but listed no actions. We test for the former. */ | |
87 | if (__nss_database_get (database_id, ni) && *ni != NULL) | |
5f0e6fc7 | 88 | { |
f8847d83 DD |
89 | /* Success. */ |
90 | return 0; | |
5f0e6fc7 | 91 | } |
f8847d83 | 92 | else |
d44638b0 | 93 | { |
f8847d83 DD |
94 | /* Failure. */ |
95 | return -1; | |
d44638b0 | 96 | } |
5f0e6fc7 | 97 | } |
a9368c34 | 98 | libc_hidden_def (__nss_database_lookup2) |
5f0e6fc7 RM |
99 | |
100 | ||
101 | /* -1 == not found | |
4317f9e1 | 102 | 0 == function found |
14ea22e9 | 103 | 1 == finished */ |
5f0e6fc7 | 104 | int |
f8847d83 | 105 | __nss_lookup (nss_action_list *ni, const char *fct_name, const char *fct2_name, |
384ca551 | 106 | void **fctp) |
5f0e6fc7 | 107 | { |
899d423e | 108 | *fctp = __nss_lookup_function (*ni, fct_name); |
384ca551 | 109 | if (*fctp == NULL && fct2_name != NULL) |
0dc6c5e4 | 110 | *fctp = __nss_lookup_function (*ni, fct2_name); |
5f0e6fc7 RM |
111 | |
112 | while (*fctp == NULL | |
113 | && nss_next_action (*ni, NSS_STATUS_UNAVAIL) == NSS_ACTION_CONTINUE | |
f8847d83 | 114 | && (*ni)[1].module != NULL) |
5f0e6fc7 | 115 | { |
f8847d83 | 116 | ++(*ni); |
5f0e6fc7 | 117 | |
899d423e | 118 | *fctp = __nss_lookup_function (*ni, fct_name); |
384ca551 | 119 | if (*fctp == NULL && fct2_name != NULL) |
0dc6c5e4 | 120 | *fctp = __nss_lookup_function (*ni, fct2_name); |
5f0e6fc7 RM |
121 | } |
122 | ||
f8847d83 | 123 | return *fctp != NULL ? 0 : (*ni)[1].module == NULL ? 1 : -1; |
5f0e6fc7 | 124 | } |
684ae515 | 125 | libc_hidden_def (__nss_lookup) |
5f0e6fc7 RM |
126 | |
127 | ||
128 | /* -1 == not found | |
129 | 0 == adjusted for next function | |
130 | 1 == finished */ | |
131 | int | |
f8847d83 | 132 | __nss_next2 (nss_action_list *ni, const char *fct_name, const char *fct2_name, |
384ca551 | 133 | void **fctp, int status, int all_values) |
5f0e6fc7 RM |
134 | { |
135 | if (all_values) | |
136 | { | |
137 | if (nss_next_action (*ni, NSS_STATUS_TRYAGAIN) == NSS_ACTION_RETURN | |
138 | && nss_next_action (*ni, NSS_STATUS_UNAVAIL) == NSS_ACTION_RETURN | |
139 | && nss_next_action (*ni, NSS_STATUS_NOTFOUND) == NSS_ACTION_RETURN | |
140 | && nss_next_action (*ni, NSS_STATUS_SUCCESS) == NSS_ACTION_RETURN) | |
141 | return 1; | |
142 | } | |
143 | else | |
144 | { | |
145 | /* This is really only for debugging. */ | |
384ca551 UD |
146 | if (__builtin_expect (NSS_STATUS_TRYAGAIN > status |
147 | || status > NSS_STATUS_RETURN, 0)) | |
a6e8926f | 148 | __libc_fatal ("Illegal status in __nss_next.\n"); |
5f0e6fc7 RM |
149 | |
150 | if (nss_next_action (*ni, status) == NSS_ACTION_RETURN) | |
151 | return 1; | |
152 | } | |
153 | ||
f8847d83 | 154 | if ((*ni)[1].module == NULL) |
5f0e6fc7 RM |
155 | return -1; |
156 | ||
157 | do | |
158 | { | |
f8847d83 | 159 | ++(*ni); |
5f0e6fc7 | 160 | |
899d423e | 161 | *fctp = __nss_lookup_function (*ni, fct_name); |
384ca551 UD |
162 | if (*fctp == NULL && fct2_name != NULL) |
163 | *fctp = __nss_lookup_function (*ni, fct2_name); | |
5f0e6fc7 RM |
164 | } |
165 | while (*fctp == NULL | |
166 | && nss_next_action (*ni, NSS_STATUS_UNAVAIL) == NSS_ACTION_CONTINUE | |
f8847d83 | 167 | && (*ni)[1].module != NULL); |
5f0e6fc7 RM |
168 | |
169 | return *fctp != NULL ? 0 : -1; | |
170 | } | |
384ca551 UD |
171 | libc_hidden_def (__nss_next2) |
172 | ||
899d423e | 173 | void * |
f8847d83 | 174 | __nss_lookup_function (nss_action_list ni, const char *fct_name) |
5f0e6fc7 | 175 | { |
f8847d83 | 176 | if (ni->module == NULL) |
5f0e6fc7 | 177 | return NULL; |
f8847d83 | 178 | return __nss_module_get_function (ni->module, fct_name); |
d60d215c | 179 | } |
f8847d83 | 180 | libc_hidden_def (__nss_lookup_function) |