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ae5c498d | 1 | /* Template generic NSS service provider. See nss_test.h for usage. |
dff8da6b | 2 | Copyright (C) 2017-2024 Free Software Foundation, Inc. |
ae5c498d DD |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
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. | |
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 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
ae5c498d | 18 | |
c3e2f19b UD |
19 | #include <errno.h> |
20 | #include <nss.h> | |
21 | #include <pthread.h> | |
22 | #include <string.h> | |
ae5c498d DD |
23 | #include <stdio.h> |
24 | #include <alloc_buffer.h> | |
c3e2f19b UD |
25 | |
26 | ||
ae5c498d DD |
27 | /* We need to be able to handle NULLs "properly" within the testsuite, |
28 | to test known bad data. */ | |
29 | #define alloc_buffer_maybe_copy_string(b,s) s ? alloc_buffer_copy_string (b, s) : NULL; | |
c3e2f19b | 30 | |
ae5c498d DD |
31 | /* This file is the master template. Other instances of this test |
32 | module should define NAME(x) to have their name instead of "test1", | |
33 | then include this file. | |
34 | */ | |
35 | #define NAME_(x,n) _nss_##n##_##x | |
36 | #ifndef NAME | |
37 | #define NAME(x) NAME_(x,test1) | |
38 | #endif | |
39 | #define NAMESTR__(x) #x | |
40 | #define NAMESTR_(x) NAMESTR__(x) | |
41 | #define NAMESTR(x) NAMESTR_(NAME(x)) | |
c3e2f19b | 42 | |
ae5c498d DD |
43 | #include "nss_test.h" |
44 | ||
45 | /* -------------------------------------------------- */ | |
46 | /* Default Data. */ | |
c3e2f19b | 47 | |
ae5c498d | 48 | static struct passwd default_pwd_data[] = |
c3e2f19b UD |
49 | { |
50 | #define PWD(u) \ | |
51 | { .pw_name = (char *) "name" #u, .pw_passwd = (char *) "*", .pw_uid = u, \ | |
52 | .pw_gid = 100, .pw_gecos = (char *) "*", .pw_dir = (char *) "*", \ | |
53 | .pw_shell = (char *) "*" } | |
c3e2f19b | 54 | PWD (30), |
ae5c498d | 55 | PWD (100), |
c3e2f19b UD |
56 | PWD (200), |
57 | PWD (60), | |
58 | PWD (20000) | |
59 | }; | |
cb62108e SE |
60 | #define default_npwd_data \ |
61 | (sizeof (default_pwd_data) / sizeof (default_pwd_data[0])) | |
ae5c498d DD |
62 | |
63 | static struct passwd *pwd_data = default_pwd_data; | |
64 | static int npwd_data = default_npwd_data; | |
65 | ||
66 | static struct group *grp_data = NULL; | |
67 | static int ngrp_data = 0; | |
68 | ||
9b456c5d DD |
69 | static struct spwd *spwd_data = NULL; |
70 | static int nspwd_data = 0; | |
71 | ||
6eceded9 DD |
72 | static struct hostent *host_data = NULL; |
73 | static int nhost_data = 0; | |
74 | ||
ae5c498d DD |
75 | /* This function will get called, and once per session, look back into |
76 | the test case's executable for an init hook function, and call | |
77 | it. */ | |
78 | ||
79 | static int initted = 0; | |
80 | static void | |
81 | init(void) | |
82 | { | |
83 | test_tables t; | |
84 | int i; | |
85 | ||
86 | if (initted) | |
87 | return; | |
88 | if (NAME(init_hook)) | |
89 | { | |
c4f50205 | 90 | memset (&t, 0, sizeof (t)); |
ae5c498d DD |
91 | NAME(init_hook)(&t); |
92 | ||
93 | if (t.pwd_table) | |
94 | { | |
95 | pwd_data = t.pwd_table; | |
96 | for (i=0; ! PWD_ISLAST(& pwd_data[i]); i++) | |
97 | ; | |
98 | npwd_data = i; | |
99 | } | |
100 | ||
101 | if (t.grp_table) | |
102 | { | |
103 | grp_data = t.grp_table; | |
104 | for (i=0; ! GRP_ISLAST(& grp_data[i]); i++) | |
105 | ; | |
106 | ngrp_data = i; | |
107 | } | |
9b456c5d DD |
108 | if (t.spwd_table) |
109 | { | |
110 | spwd_data = t.spwd_table; | |
111 | for (i=0; ! SPWD_ISLAST(& spwd_data[i]); i++) | |
112 | ; | |
113 | nspwd_data = i; | |
114 | } | |
6eceded9 DD |
115 | if (t.host_table) |
116 | { | |
117 | host_data = t.host_table; | |
118 | for (i=0; ! HOST_ISLAST(& host_data[i]); i++) | |
119 | ; | |
120 | nhost_data = i; | |
121 | } | |
ae5c498d DD |
122 | } |
123 | initted = 1; | |
124 | } | |
125 | ||
126 | /* -------------------------------------------------- */ | |
127 | /* Password handling. */ | |
c3e2f19b UD |
128 | |
129 | static size_t pwd_iter; | |
130 | #define CURPWD pwd_data[pwd_iter] | |
131 | ||
132 | static pthread_mutex_t pwd_lock = PTHREAD_MUTEX_INITIALIZER; | |
133 | ||
c3e2f19b | 134 | enum nss_status |
ae5c498d | 135 | NAME(setpwent) (int stayopen) |
c3e2f19b | 136 | { |
ae5c498d | 137 | init(); |
c3e2f19b UD |
138 | pwd_iter = 0; |
139 | return NSS_STATUS_SUCCESS; | |
140 | } | |
141 | ||
142 | ||
143 | enum nss_status | |
ae5c498d | 144 | NAME(endpwent) (void) |
c3e2f19b | 145 | { |
ae5c498d | 146 | init(); |
c3e2f19b UD |
147 | return NSS_STATUS_SUCCESS; |
148 | } | |
149 | ||
ae5c498d DD |
150 | static enum nss_status |
151 | copy_passwd (struct passwd *result, struct passwd *local, | |
152 | char *buffer, size_t buflen, int *errnop) | |
153 | { | |
154 | struct alloc_buffer buf = alloc_buffer_create (buffer, buflen); | |
155 | ||
156 | result->pw_name = alloc_buffer_maybe_copy_string (&buf, local->pw_name); | |
157 | result->pw_passwd = alloc_buffer_maybe_copy_string (&buf, local->pw_passwd); | |
158 | result->pw_uid = local->pw_uid; | |
159 | result->pw_gid = local->pw_gid; | |
160 | result->pw_gecos = alloc_buffer_maybe_copy_string (&buf, local->pw_gecos); | |
161 | result->pw_dir = alloc_buffer_maybe_copy_string (&buf, local->pw_dir); | |
162 | result->pw_shell = alloc_buffer_maybe_copy_string (&buf, local->pw_shell); | |
163 | ||
164 | if (alloc_buffer_has_failed (&buf)) | |
165 | { | |
166 | *errnop = ERANGE; | |
167 | return NSS_STATUS_TRYAGAIN; | |
168 | } | |
169 | ||
170 | return NSS_STATUS_SUCCESS; | |
171 | } | |
c3e2f19b UD |
172 | |
173 | enum nss_status | |
ae5c498d | 174 | NAME(getpwent_r) (struct passwd *result, char *buffer, size_t buflen, |
c3e2f19b UD |
175 | int *errnop) |
176 | { | |
c3e2f19b UD |
177 | int res = NSS_STATUS_SUCCESS; |
178 | ||
ae5c498d | 179 | init(); |
c3e2f19b UD |
180 | pthread_mutex_lock (&pwd_lock); |
181 | ||
182 | if (pwd_iter >= npwd_data) | |
183 | res = NSS_STATUS_NOTFOUND; | |
184 | else | |
185 | { | |
ae5c498d | 186 | res = copy_passwd (result, &CURPWD, buffer, buflen, errnop); |
c3e2f19b UD |
187 | ++pwd_iter; |
188 | } | |
189 | ||
190 | pthread_mutex_unlock (&pwd_lock); | |
191 | ||
192 | return res; | |
193 | } | |
194 | ||
195 | ||
196 | enum nss_status | |
ae5c498d | 197 | NAME(getpwuid_r) (uid_t uid, struct passwd *result, char *buffer, |
c3e2f19b UD |
198 | size_t buflen, int *errnop) |
199 | { | |
ae5c498d | 200 | init(); |
c3e2f19b UD |
201 | for (size_t idx = 0; idx < npwd_data; ++idx) |
202 | if (pwd_data[idx].pw_uid == uid) | |
ae5c498d | 203 | return copy_passwd (result, &pwd_data[idx], buffer, buflen, errnop); |
c3e2f19b UD |
204 | |
205 | return NSS_STATUS_NOTFOUND; | |
206 | } | |
207 | ||
208 | ||
209 | enum nss_status | |
ae5c498d | 210 | NAME(getpwnam_r) (const char *name, struct passwd *result, char *buffer, |
c3e2f19b UD |
211 | size_t buflen, int *errnop) |
212 | { | |
ae5c498d | 213 | init(); |
c3e2f19b | 214 | for (size_t idx = 0; idx < npwd_data; ++idx) |
ae5c498d DD |
215 | if (strcmp (pwd_data[idx].pw_name, name) == 0) |
216 | return copy_passwd (result, &pwd_data[idx], buffer, buflen, errnop); | |
217 | ||
218 | return NSS_STATUS_NOTFOUND; | |
219 | } | |
220 | ||
221 | /* -------------------------------------------------- */ | |
222 | /* Group handling. */ | |
223 | ||
224 | static size_t grp_iter; | |
225 | #define CURGRP grp_data[grp_iter] | |
226 | ||
227 | static pthread_mutex_t grp_lock = PTHREAD_MUTEX_INITIALIZER; | |
228 | ||
229 | enum nss_status | |
230 | NAME(setgrent) (int stayopen) | |
231 | { | |
232 | init(); | |
233 | grp_iter = 0; | |
234 | return NSS_STATUS_SUCCESS; | |
235 | } | |
236 | ||
237 | ||
238 | enum nss_status | |
239 | NAME(endgrent) (void) | |
240 | { | |
241 | init(); | |
242 | return NSS_STATUS_SUCCESS; | |
243 | } | |
244 | ||
245 | static enum nss_status | |
246 | copy_group (struct group *result, struct group *local, | |
247 | char *buffer, size_t buflen, int *errnop) | |
248 | { | |
249 | struct alloc_buffer buf = alloc_buffer_create (buffer, buflen); | |
250 | char **memlist; | |
251 | int i; | |
252 | ||
253 | if (local->gr_mem) | |
254 | { | |
255 | i = 0; | |
256 | while (local->gr_mem[i]) | |
257 | ++i; | |
258 | ||
259 | memlist = alloc_buffer_alloc_array (&buf, char *, i + 1); | |
260 | ||
261 | if (memlist) { | |
262 | for (i = 0; local->gr_mem[i]; ++i) | |
263 | memlist[i] = alloc_buffer_maybe_copy_string (&buf, local->gr_mem[i]); | |
264 | memlist[i] = NULL; | |
265 | } | |
266 | ||
267 | result->gr_mem = memlist; | |
268 | } | |
269 | else | |
270 | result->gr_mem = NULL; | |
271 | ||
272 | result->gr_name = alloc_buffer_maybe_copy_string (&buf, local->gr_name); | |
273 | result->gr_passwd = alloc_buffer_maybe_copy_string (&buf, local->gr_passwd); | |
274 | result->gr_gid = local->gr_gid; | |
275 | ||
276 | if (alloc_buffer_has_failed (&buf)) | |
277 | { | |
278 | *errnop = ERANGE; | |
279 | return NSS_STATUS_TRYAGAIN; | |
280 | } | |
281 | ||
282 | return NSS_STATUS_SUCCESS; | |
283 | } | |
284 | ||
285 | ||
286 | enum nss_status | |
287 | NAME(getgrent_r) (struct group *result, char *buffer, size_t buflen, | |
288 | int *errnop) | |
289 | { | |
290 | int res = NSS_STATUS_SUCCESS; | |
291 | ||
292 | init(); | |
293 | pthread_mutex_lock (&grp_lock); | |
294 | ||
295 | if (grp_iter >= ngrp_data) | |
296 | res = NSS_STATUS_NOTFOUND; | |
297 | else | |
298 | { | |
299 | res = copy_group (result, &CURGRP, buffer, buflen, errnop); | |
300 | ++grp_iter; | |
301 | } | |
302 | ||
6eceded9 | 303 | pthread_mutex_unlock (&grp_lock); |
ae5c498d DD |
304 | |
305 | return res; | |
306 | } | |
307 | ||
308 | ||
309 | enum nss_status | |
310 | NAME(getgrgid_r) (gid_t gid, struct group *result, char *buffer, | |
311 | size_t buflen, int *errnop) | |
312 | { | |
313 | init(); | |
314 | for (size_t idx = 0; idx < ngrp_data; ++idx) | |
315 | if (grp_data[idx].gr_gid == gid) | |
316 | return copy_group (result, &grp_data[idx], buffer, buflen, errnop); | |
317 | ||
318 | return NSS_STATUS_NOTFOUND; | |
319 | } | |
320 | ||
321 | ||
322 | enum nss_status | |
323 | NAME(getgrnam_r) (const char *name, struct group *result, char *buffer, | |
324 | size_t buflen, int *errnop) | |
325 | { | |
326 | init(); | |
327 | for (size_t idx = 0; idx < ngrp_data; ++idx) | |
c3e2f19b UD |
328 | if (strcmp (pwd_data[idx].pw_name, name) == 0) |
329 | { | |
ae5c498d | 330 | return copy_group (result, &grp_data[idx], buffer, buflen, errnop); |
c3e2f19b UD |
331 | } |
332 | ||
333 | return NSS_STATUS_NOTFOUND; | |
334 | } | |
6eceded9 | 335 | |
9b456c5d DD |
336 | /* -------------------------------------------------- */ |
337 | /* Shadow password handling. */ | |
338 | ||
339 | static size_t spwd_iter; | |
340 | #define CURSPWD spwd_data[spwd_iter] | |
341 | ||
342 | static pthread_mutex_t spwd_lock = PTHREAD_MUTEX_INITIALIZER; | |
343 | ||
344 | enum nss_status | |
345 | NAME(setspent) (int stayopen) | |
346 | { | |
347 | init(); | |
348 | spwd_iter = 0; | |
349 | return NSS_STATUS_SUCCESS; | |
350 | } | |
351 | ||
352 | ||
353 | enum nss_status | |
354 | NAME(endspwent) (void) | |
355 | { | |
356 | init(); | |
357 | return NSS_STATUS_SUCCESS; | |
358 | } | |
359 | ||
360 | static enum nss_status | |
361 | copy_shadow (struct spwd *result, struct spwd *local, | |
362 | char *buffer, size_t buflen, int *errnop) | |
363 | { | |
364 | struct alloc_buffer buf = alloc_buffer_create (buffer, buflen); | |
365 | ||
366 | result->sp_namp = alloc_buffer_maybe_copy_string (&buf, local->sp_namp); | |
367 | result->sp_pwdp = alloc_buffer_maybe_copy_string (&buf, local->sp_pwdp); | |
368 | result->sp_lstchg = local->sp_lstchg; | |
369 | result->sp_min = local->sp_min; | |
370 | result->sp_max = local->sp_max; | |
371 | result->sp_warn = local->sp_warn; | |
372 | result->sp_inact = local->sp_inact; | |
373 | result->sp_expire = local->sp_expire; | |
374 | result->sp_flag = local->sp_flag; | |
375 | ||
376 | if (alloc_buffer_has_failed (&buf)) | |
377 | { | |
378 | *errnop = ERANGE; | |
379 | return NSS_STATUS_TRYAGAIN; | |
380 | } | |
381 | ||
382 | return NSS_STATUS_SUCCESS; | |
383 | } | |
384 | ||
385 | enum nss_status | |
386 | NAME(getspent_r) (struct spwd *result, char *buffer, size_t buflen, | |
387 | int *errnop) | |
388 | { | |
389 | int res = NSS_STATUS_SUCCESS; | |
390 | ||
391 | init(); | |
392 | pthread_mutex_lock (&spwd_lock); | |
393 | ||
394 | if (spwd_iter >= nspwd_data) | |
395 | res = NSS_STATUS_NOTFOUND; | |
396 | else | |
397 | { | |
398 | res = copy_shadow (result, &CURSPWD, buffer, buflen, errnop); | |
399 | ++spwd_iter; | |
400 | } | |
401 | ||
402 | pthread_mutex_unlock (&spwd_lock); | |
403 | ||
404 | return res; | |
405 | } | |
406 | ||
407 | enum nss_status | |
408 | NAME(getspnam_r) (const char *name, struct spwd *result, char *buffer, | |
409 | size_t buflen, int *errnop) | |
410 | { | |
411 | init(); | |
412 | for (size_t idx = 0; idx < nspwd_data; ++idx) | |
413 | if (strcmp (spwd_data[idx].sp_namp, name) == 0) | |
414 | return copy_shadow (result, &spwd_data[idx], buffer, buflen, errnop); | |
415 | ||
416 | return NSS_STATUS_NOTFOUND; | |
417 | } | |
418 | ||
6eceded9 DD |
419 | /* -------------------------------------------------- */ |
420 | /* Host handling. */ | |
421 | ||
422 | static size_t host_iter; | |
423 | #define CURHOST host_data[host_iter] | |
424 | ||
425 | static pthread_mutex_t host_lock = PTHREAD_MUTEX_INITIALIZER; | |
426 | ||
427 | enum nss_status | |
428 | NAME(sethostent) (int stayopen) | |
429 | { | |
430 | init(); | |
431 | host_iter = 0; | |
432 | return NSS_STATUS_SUCCESS; | |
433 | } | |
434 | ||
435 | ||
436 | enum nss_status | |
437 | NAME(endhostent) (void) | |
438 | { | |
439 | init(); | |
440 | return NSS_STATUS_SUCCESS; | |
441 | } | |
442 | ||
443 | static enum nss_status | |
444 | copy_host (struct hostent *result, struct hostent *local, | |
445 | char *buffer, size_t buflen, int *errnop) | |
446 | { | |
447 | struct alloc_buffer buf = alloc_buffer_create (buffer, buflen); | |
448 | char **memlist; | |
449 | int i, j; | |
450 | ||
451 | if (local->h_addr_list) | |
452 | { | |
453 | i = 0; | |
454 | while (local->h_addr_list[i]) | |
455 | ++i; | |
456 | ||
457 | memlist = alloc_buffer_alloc_array (&buf, char *, i + 1); | |
458 | ||
459 | if (memlist) { | |
460 | for (j = 0; j < i; ++j) | |
461 | memlist[j] = alloc_buffer_maybe_copy_string (&buf, local->h_addr_list[j]); | |
462 | memlist[j] = NULL; | |
463 | } | |
464 | ||
465 | result->h_addr_list = memlist; | |
466 | } | |
467 | else | |
468 | { | |
469 | result->h_addr_list = NULL; | |
470 | } | |
471 | ||
472 | result->h_aliases = NULL; | |
473 | result->h_addrtype = AF_INET; | |
474 | result->h_length = 4; | |
475 | result->h_name = alloc_buffer_maybe_copy_string (&buf, local->h_name); | |
476 | ||
477 | if (alloc_buffer_has_failed (&buf)) | |
478 | { | |
479 | *errnop = ERANGE; | |
480 | return NSS_STATUS_TRYAGAIN; | |
481 | } | |
482 | ||
483 | return NSS_STATUS_SUCCESS; | |
484 | } | |
485 | ||
486 | ||
487 | enum nss_status | |
488 | NAME(gethostent_r) (struct hostent *ret, char *buffer, size_t buflen, | |
489 | struct hostent **result, int *errnop) | |
490 | { | |
491 | int res = NSS_STATUS_SUCCESS; | |
492 | ||
493 | init(); | |
494 | pthread_mutex_lock (&host_lock); | |
495 | ||
496 | if (host_iter >= nhost_data) | |
497 | { | |
498 | res = NSS_STATUS_NOTFOUND; | |
499 | *result = NULL; | |
500 | } | |
501 | else | |
502 | { | |
503 | res = copy_host (ret, &CURHOST, buffer, buflen, errnop); | |
504 | *result = ret; | |
505 | ++host_iter; | |
506 | } | |
507 | ||
508 | pthread_mutex_unlock (&host_lock); | |
509 | ||
510 | return res; | |
511 | } | |
512 | ||
513 | enum nss_status | |
514 | NAME(gethostbyname3_r) (const char *name, int af, struct hostent *ret, | |
515 | char *buffer, size_t buflen, int *errnop, | |
516 | int *h_errnop, int32_t *ttlp, char **canonp) | |
517 | { | |
518 | init(); | |
519 | ||
520 | for (size_t idx = 0; idx < nhost_data; ++idx) | |
521 | if (strcmp (host_data[idx].h_name, name) == 0) | |
522 | return copy_host (ret, & host_data[idx], buffer, buflen, h_errnop); | |
523 | ||
524 | return NSS_STATUS_NOTFOUND; | |
525 | } | |
526 | ||
527 | enum nss_status | |
528 | NAME(gethostbyname_r) (const char *name, struct hostent *result, | |
529 | char *buffer, size_t buflen, | |
530 | int *errnop, int *h_errnop) | |
531 | { | |
532 | return NAME(gethostbyname3_r) (name, AF_INET, result, buffer, buflen, | |
533 | errnop, h_errnop, NULL, NULL); | |
534 | } | |
535 | ||
536 | enum nss_status | |
537 | NAME(gethostbyname2_r) (const char *name, int af, struct hostent *result, | |
538 | char *buffer, size_t buflen, | |
539 | int *errnop, int *h_errnop) | |
540 | { | |
541 | return NAME(gethostbyname3_r) (name, af, result, buffer, buflen, | |
542 | errnop, h_errnop, NULL, NULL); | |
543 | } | |
544 | ||
545 | enum nss_status | |
546 | NAME(gethostbyaddr2_r) (const void *addr, socklen_t len, int af, | |
547 | struct hostent *result, char *buffer, size_t buflen, | |
548 | int *errnop, int *h_errnop, int32_t *ttlp) | |
549 | { | |
550 | init(); | |
551 | ||
552 | /* Support this later. */ | |
553 | if (len != 4) | |
554 | return NSS_STATUS_NOTFOUND; | |
555 | ||
556 | for (size_t idx = 0; idx < nhost_data; ++idx) | |
557 | if (memcmp (host_data[idx].h_addr, addr, len) == 0) | |
558 | return copy_host (result, & host_data[idx], buffer, buflen, h_errnop); | |
559 | ||
560 | return NSS_STATUS_NOTFOUND; | |
561 | } | |
562 | ||
563 | /* Note: only the first address is supported, intentionally. */ | |
564 | enum nss_status | |
565 | NAME(gethostbyaddr_r) (const void *addr, socklen_t len, int af, | |
566 | struct hostent *result, char *buffer, size_t buflen, | |
567 | int *errnop, int *h_errnop) | |
568 | { | |
569 | return NAME(gethostbyaddr2_r) (addr, len, af, result, buffer, buflen, | |
570 | errnop, h_errnop, NULL); | |
571 | } |