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e61abf83 UD |
1 | /* Copyright (C) 1997 Free Software Foundation, Inc. |
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 <nss.h> | |
21 | #include <errno.h> | |
22 | #include <pwd.h> | |
23 | #include <string.h> | |
24 | #include <libc-lock.h> | |
25 | #include <rpcsvc/nis.h> | |
26 | #include <rpcsvc/nislib.h> | |
27 | ||
28 | #include "nss-nisplus.h" | |
29 | ||
30 | __libc_lock_define_initialized (static, lock) | |
31 | ||
32 | static nis_result *result = NULL; | |
33 | static nis_name *names = NULL; | |
34 | ||
35 | #define NISENTRYVAL(idx,col,res) \ | |
36 | ((res)->objects.objects_val[(idx)].zo_data.objdata_u.en_data.en_cols.en_cols_val[(col)].ec_value.ec_value_val) | |
37 | ||
38 | #define NISENTRYLEN(idx,col,res) \ | |
39 | ((res)->objects.objects_val[(idx)].zo_data.objdata_u.en_data.en_cols.en_cols_val[(col)].ec_value.ec_value_len) | |
40 | ||
26dee9c4 | 41 | int |
e61abf83 UD |
42 | _nss_nisplus_parse_pwent (nis_result *result, struct passwd *pw, |
43 | char *buffer, size_t buflen) | |
44 | { | |
45 | char *first_unused = buffer; | |
46 | size_t room_left = buflen; | |
47 | ||
48 | if (result == NULL) | |
26dee9c4 | 49 | return 0; |
e61abf83 UD |
50 | |
51 | if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS) || | |
52 | result->objects.objects_len != 1 || | |
53 | result->objects.objects_val[0].zo_data.zo_type != ENTRY_OBJ || | |
54 | strcmp(result->objects.objects_val[0].zo_data.objdata_u.en_data.en_type, | |
55 | "passwd_tbl") != 0 || | |
56 | result->objects.objects_val[0].zo_data.objdata_u.en_data.en_cols.en_cols_len < 7) | |
26dee9c4 | 57 | return 0; |
e61abf83 UD |
58 | |
59 | if (NISENTRYLEN(0, 0, result) >= room_left) | |
60 | { | |
61 | /* The line is too long for our buffer. */ | |
62 | no_more_room: | |
63 | __set_errno (ERANGE); | |
26dee9c4 | 64 | return 0; |
e61abf83 UD |
65 | } |
66 | ||
67 | strncpy (first_unused, NISENTRYVAL(0, 0, result), | |
68 | NISENTRYLEN (0, 0, result)); | |
69 | first_unused[NISENTRYLEN(0, 0, result)] = '\0'; | |
70 | pw->pw_name = first_unused; | |
71 | room_left -= (strlen (first_unused) +1); | |
72 | first_unused += strlen (first_unused) +1; | |
73 | ||
74 | if (NISENTRYLEN(0, 1, result) >= room_left) | |
75 | goto no_more_room; | |
76 | ||
77 | strncpy (first_unused, NISENTRYVAL(0, 1, result), | |
78 | NISENTRYLEN (0, 1, result)); | |
79 | first_unused[NISENTRYLEN(0, 1, result)] = '\0'; | |
80 | pw->pw_passwd = first_unused; | |
81 | room_left -= (strlen (first_unused) +1); | |
82 | first_unused += strlen (first_unused) +1; | |
83 | ||
84 | if (NISENTRYLEN(0, 2, result) >= room_left) | |
85 | goto no_more_room; | |
86 | ||
87 | strncpy (first_unused, NISENTRYVAL (0, 2, result), | |
88 | NISENTRYLEN (0, 2, result)); | |
89 | first_unused[NISENTRYLEN(0, 2, result)] = '\0'; | |
90 | pw->pw_uid = atoi (first_unused); | |
91 | room_left -= (strlen (first_unused) +1); | |
92 | first_unused += strlen (first_unused) +1; | |
93 | ||
94 | if (NISENTRYLEN(0, 3, result) >= room_left) | |
95 | goto no_more_room; | |
96 | ||
97 | strncpy (first_unused, NISENTRYVAL(0, 3, result), | |
98 | NISENTRYLEN (0, 3, result)); | |
99 | first_unused[NISENTRYLEN(0, 3, result)] = '\0'; | |
100 | pw->pw_gid = atoi (first_unused); | |
101 | room_left -= (strlen (first_unused) +1); | |
102 | first_unused += strlen (first_unused) +1; | |
103 | ||
104 | if (NISENTRYLEN(0, 4, result) >= room_left) | |
105 | goto no_more_room; | |
106 | ||
107 | strncpy (first_unused, NISENTRYVAL(0, 4, result), | |
108 | NISENTRYLEN (0, 4, result)); | |
109 | first_unused[NISENTRYLEN(0, 4, result)] = '\0'; | |
110 | pw->pw_gecos = first_unused; | |
111 | room_left -= (strlen (first_unused) +1); | |
112 | first_unused += strlen (first_unused) +1; | |
113 | ||
114 | if (NISENTRYLEN(0, 5, result) >= room_left) | |
115 | goto no_more_room; | |
116 | ||
117 | strncpy (first_unused, NISENTRYVAL (0, 5, result), | |
118 | NISENTRYLEN (0, 5, result)); | |
119 | first_unused[NISENTRYLEN(0, 5, result)] = '\0'; | |
120 | pw->pw_dir = first_unused; | |
121 | room_left -= (strlen (first_unused) +1); | |
122 | first_unused += strlen (first_unused) +1; | |
123 | ||
124 | if (NISENTRYLEN(0, 6, result) >= room_left) | |
125 | goto no_more_room; | |
126 | ||
127 | strncpy (first_unused, NISENTRYVAL (0, 6, result), | |
128 | NISENTRYLEN (0, 6, result)); | |
129 | first_unused[NISENTRYLEN (0, 6, result)] = '\0'; | |
130 | pw->pw_shell = first_unused; | |
131 | room_left -= (strlen (first_unused) +1); | |
132 | first_unused += strlen (first_unused) +1; | |
133 | ||
134 | return 1; | |
135 | } | |
136 | ||
137 | enum nss_status | |
138 | _nss_nisplus_setpwent (void) | |
139 | { | |
140 | __libc_lock_lock (lock); | |
141 | ||
142 | if (result) | |
143 | nis_freeresult (result); | |
144 | result = NULL; | |
145 | if (names) | |
146 | { | |
147 | nis_freenames (names); | |
148 | names = NULL; | |
149 | } | |
150 | ||
151 | __libc_lock_unlock (lock); | |
152 | ||
153 | return NSS_STATUS_SUCCESS; | |
154 | } | |
155 | ||
156 | enum nss_status | |
157 | _nss_nisplus_endpwent (void) | |
158 | { | |
159 | __libc_lock_lock (lock); | |
160 | ||
161 | if (result) | |
162 | nis_freeresult (result); | |
163 | result = NULL; | |
164 | if (names) | |
165 | { | |
166 | nis_freenames (names); | |
167 | names = NULL; | |
168 | } | |
169 | ||
170 | __libc_lock_unlock (lock); | |
171 | ||
172 | return NSS_STATUS_SUCCESS; | |
173 | } | |
174 | ||
175 | static enum nss_status | |
176 | internal_nisplus_getpwent_r (struct passwd *pw, char *buffer, size_t buflen) | |
177 | { | |
178 | int parse_res; | |
179 | ||
180 | /* Get the next entry until we found a correct one. */ | |
181 | do | |
182 | { | |
183 | if (result == NULL) | |
184 | { | |
185 | names = nis_getnames ("passwd.org_dir"); | |
186 | if (names == NULL || names[0] == NULL) | |
187 | return NSS_STATUS_UNAVAIL; | |
188 | ||
189 | result = nis_first_entry(names[0]); | |
190 | if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) | |
191 | return niserr2nss (result->status); | |
192 | } | |
193 | else | |
194 | { | |
195 | nis_result *res; | |
196 | ||
197 | res = nis_next_entry(names[0], &result->cookie); | |
198 | nis_freeresult (result); | |
199 | result = res; | |
200 | if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) | |
201 | return niserr2nss (result->status); | |
202 | } | |
203 | ||
204 | parse_res = _nss_nisplus_parse_pwent (result, pw, buffer, buflen); | |
205 | } while (!parse_res); | |
206 | ||
207 | return NSS_STATUS_SUCCESS; | |
208 | } | |
209 | ||
210 | enum nss_status | |
211 | _nss_nisplus_getpwent_r (struct passwd *result, char *buffer, size_t buflen) | |
212 | { | |
213 | int status; | |
214 | ||
215 | __libc_lock_lock (lock); | |
216 | ||
217 | status = internal_nisplus_getpwent_r (result, buffer, buflen); | |
218 | ||
219 | __libc_lock_unlock (lock); | |
220 | ||
221 | return status; | |
222 | } | |
223 | ||
224 | enum nss_status | |
225 | _nss_nisplus_getpwnam_r (const char *name, struct passwd *pw, | |
226 | char *buffer, size_t buflen) | |
227 | { | |
228 | int parse_res; | |
229 | ||
230 | if (name == NULL || strlen (name) > 8) | |
231 | return NSS_STATUS_NOTFOUND; | |
232 | else | |
233 | { | |
234 | nis_result *result; | |
235 | char buf[strlen (name) + 24]; | |
236 | ||
237 | sprintf(buf, "[name=%s],passwd.org_dir", name); | |
238 | ||
239 | result = nis_list(buf, EXPAND_NAME, NULL, NULL); | |
240 | ||
241 | if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) | |
242 | { | |
243 | enum nss_status status = niserr2nss (result->status); | |
244 | ||
245 | nis_freeresult (result); | |
246 | return status; | |
247 | } | |
248 | ||
249 | parse_res = _nss_nisplus_parse_pwent (result, pw, buffer, buflen); | |
250 | ||
251 | nis_freeresult (result); | |
252 | ||
253 | if (parse_res) | |
254 | return NSS_STATUS_SUCCESS; | |
255 | ||
256 | if (!parse_res && errno == ERANGE) | |
257 | return NSS_STATUS_TRYAGAIN; | |
258 | else | |
259 | return NSS_STATUS_NOTFOUND; | |
260 | } | |
261 | } | |
262 | ||
263 | enum nss_status | |
264 | _nss_nisplus_getpwuid_r (const uid_t uid, struct passwd *pw, | |
265 | char *buffer, size_t buflen) | |
266 | { | |
267 | int parse_res; | |
268 | nis_result *result; | |
269 | char buf[100]; | |
270 | ||
271 | sprintf(buf, "[uid=%d],passwd.org_dir", uid); | |
272 | ||
273 | result = nis_list(buf, EXPAND_NAME, NULL, NULL); | |
274 | ||
275 | if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) | |
276 | { | |
277 | enum nss_status status = niserr2nss (result->status); | |
278 | ||
279 | nis_freeresult (result); | |
280 | return status; | |
281 | } | |
282 | ||
283 | parse_res = _nss_nisplus_parse_pwent (result, pw, buffer, buflen); | |
284 | ||
285 | nis_freeresult (result); | |
286 | if (parse_res) | |
287 | return NSS_STATUS_SUCCESS; | |
288 | ||
289 | if (!parse_res && errno == ERANGE) | |
290 | return NSS_STATUS_TRYAGAIN; | |
291 | else | |
292 | return NSS_STATUS_NOTFOUND; | |
293 | } |