summaryrefslogtreecommitdiff
path: root/source3/nsswitch/winbind_nss_irix.c
blob: 78be2c866ee5df41f20a55355f9f838571e0668a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
/* 
   Unix SMB/CIFS implementation.

   Windows NT Domain nsswitch module

   Copyright (C) Tim Potter 2000
   Copyright (C) James Peach 2006
   
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 3 of the License, or (at your option) any later version.
   
   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.
   
   You should have received a copy of the GNU Library General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "winbind_client.h"

#ifndef PRINTF_ATTRIBUTE
#define PRINTF_ATTRIBUTE(m, n)
#endif

#ifndef HAVE_ASPRINTF_DECL
/*PRINTFLIKE2 */
int asprintf(char **,const char *, ...) PRINTF_ATTRIBUTE(2,3);
#endif

#ifdef HAVE_NS_API_H
#undef VOLATILE
#undef STATIC
#undef DYNAMIC
#include <ns_daemon.h>
#endif

/* Maximum number of users to pass back over the unix domain socket
   per call. This is not a static limit on the total number of users 
   or groups returned in total. */

#define MAX_GETPWENT_USERS 250
#define MAX_GETGRENT_USERS 250

/* Prototypes from wb_common.c */

extern int winbindd_fd;

#ifdef HAVE_NS_API_H

/* IRIX version */

static int send_next_request(nsd_file_t *, struct winbindd_request *);
static int do_list(int state, nsd_file_t *rq);

static nsd_file_t *current_rq = NULL;
static int current_winbind_xid = 0;
static int next_winbind_xid = 0;

typedef struct winbind_xid {
	int			xid;
	nsd_file_t		*rq;
	struct winbindd_request *request;
	struct winbind_xid	*next;
} winbind_xid_t;

static winbind_xid_t *winbind_xids = (winbind_xid_t *)0;

static int
winbind_xid_new(int xid, nsd_file_t *rq, struct winbindd_request *request)
{
	winbind_xid_t *new;

	nsd_logprintf(NSD_LOG_LOW,
		"entering winbind_xid_new xid = %d rq = 0x%x, request = 0x%x\n",
		xid, rq, request);
	new = (winbind_xid_t *)nsd_calloc(1,sizeof(winbind_xid_t));
	if (!new) {
		nsd_logprintf(NSD_LOG_RESOURCE,"winbind_xid_new: failed malloc\n");
		return NSD_ERROR;
	}

	new->xid = xid;
	new->rq = rq;
	new->request = request;
	new->next = winbind_xids;
	winbind_xids = new;

	return NSD_CONTINUE;
}

/*
** This routine will look down the xid list and return the request
** associated with an xid.  We remove the record if it is found.
*/
nsd_file_t *
winbind_xid_lookup(int xid, struct winbindd_request **requestp)
{
        winbind_xid_t **last, *dx;
        nsd_file_t *result=0;

        for (last = &winbind_xids, dx = winbind_xids; dx && (dx->xid != xid);
            last = &dx->next, dx = dx->next);
        if (dx) {
                *last = dx->next;
                result = dx->rq;
		*requestp = dx->request;
                SAFE_FREE(dx);
        }
	nsd_logprintf(NSD_LOG_LOW,
		"entering winbind_xid_lookup xid = %d rq = 0x%x, request = 0x%x\n",
		xid, result, dx->request);

        return result;
}

static int
winbind_startnext_timeout(nsd_file_t **rqp, nsd_times_t *to)
{
	nsd_file_t *rq;
	struct winbindd_request *request;

	nsd_logprintf(NSD_LOG_MIN, "timeout (winbind startnext)\n");
	rq = to->t_file;
	*rqp = rq;
	nsd_timeout_remove(rq);
	request = to->t_clientdata;
	return(send_next_request(rq, request));
}

static void
dequeue_request(void)
{
	nsd_file_t *rq;
	struct winbindd_request *request;

	/*
	 * Check for queued requests
	 */
	if (winbind_xids) {
	    nsd_logprintf(NSD_LOG_MIN, "timeout (winbind) unqueue xid %d\n",
			current_winbind_xid);
	    rq = winbind_xid_lookup(current_winbind_xid++, &request);
	    /* cause a timeout on the queued request so we can send it */
	    nsd_timeout_new(rq,1,winbind_startnext_timeout,request);
	}
}

static int
do_request(nsd_file_t *rq, struct winbindd_request *request)
{
	if (winbind_xids == NULL) {
		/*
		 * No outstanding requests.
		 * Send off the request to winbindd
		 */
		nsd_logprintf(NSD_LOG_MIN, "lookup (winbind) sending request\n");
		return(send_next_request(rq, request));
	} else {
		/*
		 * Just queue it up for now - previous callout or timout
		 * will start it up
		 */
		nsd_logprintf(NSD_LOG_MIN,
			"lookup (winbind): queue request xid = %d\n",
			next_winbind_xid);
		return(winbind_xid_new(next_winbind_xid++, rq, request));
	}
}

static int 
winbind_callback(nsd_file_t **rqp, int fd)
{
	struct winbindd_response response;
	nsd_file_t *rq;
	NSS_STATUS status;
	char * result = NULL;
	size_t rlen;

	dequeue_request();

	nsd_logprintf(NSD_LOG_MIN, "entering callback (winbind)\n");

	rq = current_rq;
	*rqp = rq;

	nsd_timeout_remove(rq);
	nsd_callback_remove(fd);

	ZERO_STRUCT(response);
	status = winbindd_get_response(&response);

	if (status != NSS_STATUS_SUCCESS) {
		/* free any extra data area in response structure */
		free_response(&response);
		nsd_logprintf(NSD_LOG_MIN, 
			"callback (winbind) returning not found, status = %d\n",
			status);

		switch (status) {
		    case NSS_STATUS_UNAVAIL:
			rq->f_status = NS_UNAVAIL;
			break;
		    case NSS_STATUS_TRYAGAIN:
			rq->f_status = NS_TRYAGAIN;
			break;
		    case NSS_STATUS_NOTFOUND:
			/* FALLTHRU */
		    default:
			rq->f_status = NS_NOTFOUND;
		}

		return NSD_NEXT;
	}

	switch ((int)rq->f_cmd_data) {
	    case WINBINDD_WINS_BYNAME:
	    case WINBINDD_WINS_BYIP:
		nsd_logprintf(NSD_LOG_MIN,
			"callback (winbind) WINS_BYNAME | WINS_BYIP\n");

		rlen = asprintf(&result, "%s\n", response.data.winsresp);
		if (rlen == 0 || result == NULL) {
			return NSD_ERROR;
		}
		
		free_response(&response);
		
		nsd_logprintf(NSD_LOG_MIN, "    %s\n", result);
		nsd_set_result(rq, NS_SUCCESS, result, rlen, DYNAMIC);
		return NSD_OK;

	    case WINBINDD_GETPWUID:
	    case WINBINDD_GETPWNAM:
	    {
	        struct winbindd_pw *pw = &response.data.pw;
	    
	        nsd_logprintf(NSD_LOG_MIN,
			"callback (winbind) GETPWUID | GETPWUID\n");

	        rlen = asprintf(&result,"%s:%s:%d:%d:%s:%s:%s\n",
	                        pw->pw_name,
	                        pw->pw_passwd,
	                        pw->pw_uid,
	                        pw->pw_gid,
	                        pw->pw_gecos,
	                        pw->pw_dir,
	                        pw->pw_shell);
	        if (rlen == 0 || result == NULL)
	            return NSD_ERROR;
	    
	        free_response(&response);
	    
	        nsd_logprintf(NSD_LOG_MIN, "    %s\n", result);
	        nsd_set_result(rq, NS_SUCCESS, result, rlen, DYNAMIC);
	        return NSD_OK;
	    }

	    case WINBINDD_GETGRNAM:
	    case WINBINDD_GETGRGID:
	    {
	        const struct winbindd_gr *gr = &response.data.gr;
	        const char * members;
	    
	        nsd_logprintf(NSD_LOG_MIN,
			"callback (winbind) GETGRNAM | GETGRGID\n");

	        if (gr->num_gr_mem && response.extra_data.data) {
	                members = response.extra_data.data;
	        } else {
	                members = "";
	        }
	    
	        rlen = asprintf(&result, "%s:%s:%d:%s\n",
			    gr->gr_name, gr->gr_passwd, gr->gr_gid, members);
	        if (rlen == 0 || result == NULL)
	            return NSD_ERROR;
	    
	        free_response(&response);
	    
	        nsd_logprintf(NSD_LOG_MIN, "    %s\n", result);
	        nsd_set_result(rq, NS_SUCCESS, result, rlen, DYNAMIC);
	        return NSD_OK;
	    }

	    case WINBINDD_SETGRENT:
	    case WINBINDD_SETPWENT:
		nsd_logprintf(NSD_LOG_MIN,
			"callback (winbind) SETGRENT | SETPWENT\n");
		free_response(&response);
		return(do_list(1,rq));

	    case WINBINDD_GETGRENT:
	    case WINBINDD_GETGRLST:
	    {
	        int entries;
	    
	        nsd_logprintf(NSD_LOG_MIN,
		    "callback (winbind) GETGRENT | GETGRLIST %d responses\n",
		    response.data.num_entries);
	    
	        if (response.data.num_entries) {
	            const struct winbindd_gr *gr = &response.data.gr;
	            const char * members;
	            fstring grp_name;
	            int     i;
	    
	            gr = (struct winbindd_gr *)response.extra_data.data;
	            if (! gr ) {
	                nsd_logprintf(NSD_LOG_MIN, "     no extra_data\n");
	                free_response(&response);
	                return NSD_ERROR;
	            }
	    
	            members = (char *)response.extra_data.data +
			(response.data.num_entries * sizeof(struct winbindd_gr));
	    
	            for (i = 0; i < response.data.num_entries; i++) {
	                snprintf(grp_name, sizeof(grp_name) - 1, "%s:%s:%d:",
	                            gr->gr_name, gr->gr_passwd, gr->gr_gid);
	    
	                nsd_append_element(rq, NS_SUCCESS, result, rlen);
	                nsd_append_result(rq, NS_SUCCESS,
				&members[gr->gr_mem_ofs],
	                        strlen(&members[gr->gr_mem_ofs]));
	    
	                /* Don't log the whole list, because it might be
	                 * _really_ long and we probably don't want to clobber
	                 * the log with it.
	                 */
	                nsd_logprintf(NSD_LOG_MIN, "    %s (...)\n", grp_name);
	    
	                gr++;
	            }
	        }
	    
	        entries = response.data.num_entries;
	        free_response(&response);
	        if (entries < MAX_GETPWENT_USERS)
	            return(do_list(2,rq));
	        else
	            return(do_list(1,rq));
	    }

	    case WINBINDD_GETPWENT:
	    {
		int entries;

		nsd_logprintf(NSD_LOG_MIN,
			"callback (winbind) GETPWENT  %d responses\n",
			response.data.num_entries);

		if (response.data.num_entries) {
		    struct winbindd_pw *pw = &response.data.pw;
		    int i;

		    pw = (struct winbindd_pw *)response.extra_data.data;
		    if (! pw ) {
			nsd_logprintf(NSD_LOG_MIN, "     no extra_data\n");
			free_response(&response);
			return NSD_ERROR;
		    }
		    for (i = 0; i < response.data.num_entries; i++) {
			result = NULL;
			rlen = asprintf(&result, "%s:%s:%d:%d:%s:%s:%s",
					pw->pw_name,
					pw->pw_passwd,
					pw->pw_uid,
					pw->pw_gid,
					pw->pw_gecos,
					pw->pw_dir,
					pw->pw_shell);

			if (rlen != 0 && result != NULL) {
			    nsd_logprintf(NSD_LOG_MIN, "    %s\n",result);
			    nsd_append_element(rq, NS_SUCCESS, result, rlen);
			    free(result);
			}

			pw++;
		    }
		}

		entries = response.data.num_entries;
		free_response(&response);
		if (entries < MAX_GETPWENT_USERS)
		    return(do_list(2,rq));
		else
		    return(do_list(1,rq));
	    }

	    case WINBINDD_ENDGRENT:
	    case WINBINDD_ENDPWENT:
		nsd_logprintf(NSD_LOG_MIN, "callback (winbind) ENDGRENT | ENDPWENT\n");
		nsd_append_element(rq, NS_SUCCESS, "\n", 1);
		free_response(&response);
		return NSD_NEXT;

	    default:
		free_response(&response);
		nsd_logprintf(NSD_LOG_MIN, "callback (winbind) invalid command %d\n", (int)rq->f_cmd_data);
		return NSD_NEXT;
	}
}

static int 
winbind_timeout(nsd_file_t **rqp, nsd_times_t *to)
{
	nsd_file_t *rq;

	dequeue_request();

	nsd_logprintf(NSD_LOG_MIN, "timeout (winbind)\n");

	rq = to->t_file;
	*rqp = rq;

	/* Remove the callback and timeout */
	nsd_callback_remove(winbindd_fd);
	nsd_timeout_remove(rq);

	rq->f_status = NS_NOTFOUND;
	return NSD_NEXT;
}

static int
send_next_request(nsd_file_t *rq, struct winbindd_request *request)
{
	NSS_STATUS status;
	long timeout;

        switch (rq->f_index) {
                case LOOKUP:
                        timeout = nsd_attr_fetch_long(rq->f_attrs,
                                        "lookup_timeout", 10, 10);
                        break;
                case LIST:
                        timeout = nsd_attr_fetch_long(rq->f_attrs,
                                        "list_timeout", 10, 10);
                        break;
                default:
	                nsd_logprintf(NSD_LOG_OPER,
                                "send_next_request (winbind) "
                                "invalid request type %d\n", rq->f_index);
                        rq->f_status = NS_BADREQ;
                        return NSD_NEXT;
        }

	nsd_logprintf(NSD_LOG_MIN,
		"send_next_request (winbind) %d, timeout = %d sec\n",
			rq->f_cmd_data, timeout);
	status = winbindd_send_request((int)rq->f_cmd_data,0,request);
	SAFE_FREE(request);

	if (status != NSS_STATUS_SUCCESS) {
		nsd_logprintf(NSD_LOG_MIN, 
			"send_next_request (winbind) error status = %d\n",
			status);
		rq->f_status = status;
		return NSD_NEXT;
	}

	current_rq = rq;

	/*
	 * Set up callback and timeouts
	 */
	nsd_logprintf(NSD_LOG_MIN, "send_next_request (winbind) fd = %d\n",
		winbindd_fd);

	nsd_callback_new(winbindd_fd, winbind_callback, NSD_READ);
	nsd_timeout_new(rq, timeout * 1000, winbind_timeout, NULL);
	return NSD_CONTINUE;
}

int init(void)
{
	nsd_logprintf(NSD_LOG_MIN, "entering init (winbind)\n");
	return(NSD_OK);
}

int lookup(nsd_file_t *rq)
{
	char *map;
	char *key;
	struct winbindd_request *request;

	nsd_logprintf(NSD_LOG_MIN, "entering lookup (winbind)\n");
	if (! rq)
		return NSD_ERROR;

	map = nsd_attr_fetch_string(rq->f_attrs, "table", (char*)0);
	key = nsd_attr_fetch_string(rq->f_attrs, "key", (char*)0);
	if (! map || ! key) {
		nsd_logprintf(NSD_LOG_MIN, "lookup (winbind) table or key not defined\n");
		rq->f_status = NS_BADREQ;
		return NSD_ERROR;
	}

	nsd_logprintf(NSD_LOG_MIN, "lookup (winbind %s)\n",map);

	request = (struct winbindd_request *)nsd_calloc(1,sizeof(struct winbindd_request));
	if (! request) {
		nsd_logprintf(NSD_LOG_RESOURCE,
			"lookup (winbind): failed malloc\n");
		return NSD_ERROR;
	}

	if (strcasecmp(map,"passwd.byuid") == 0) {
	    request->data.uid = atoi(key);
	    rq->f_cmd_data = (void *)WINBINDD_GETPWUID;
	} else if (strcasecmp(map,"passwd.byname") == 0) {
	    strncpy(request->data.username, key, 
		sizeof(request->data.username) - 1);
	    request->data.username[sizeof(request->data.username) - 1] = '\0';
	    rq->f_cmd_data = (void *)WINBINDD_GETPWNAM; 
	} else if (strcasecmp(map,"group.byname") == 0) {
	    strncpy(request->data.groupname, key, 
		sizeof(request->data.groupname) - 1);
	    request->data.groupname[sizeof(request->data.groupname) - 1] = '\0';
	    rq->f_cmd_data = (void *)WINBINDD_GETGRNAM; 
	} else if (strcasecmp(map,"group.bygid") == 0) {
	    request->data.gid = atoi(key);
	    rq->f_cmd_data = (void *)WINBINDD_GETGRGID;
	} else if (strcasecmp(map,"hosts.byname") == 0) {
	    strncpy(request->data.winsreq, key, sizeof(request->data.winsreq) - 1);
	    request->data.winsreq[sizeof(request->data.winsreq) - 1] = '\0';
	    rq->f_cmd_data = (void *)WINBINDD_WINS_BYNAME;
	} else if (strcasecmp(map,"hosts.byaddr") == 0) {
	    strncpy(request->data.winsreq, key, sizeof(request->data.winsreq) - 1);
	    request->data.winsreq[sizeof(request->data.winsreq) - 1] = '\0';
	    rq->f_cmd_data = (void *)WINBINDD_WINS_BYIP;
	} else {
		/*
		 * Don't understand this map - just return not found
		 */
		nsd_logprintf(NSD_LOG_MIN, "lookup (winbind) unknown table\n");
		SAFE_FREE(request);
		rq->f_status = NS_NOTFOUND;
		return NSD_NEXT;
	}

	return(do_request(rq, request));
}

int list(nsd_file_t *rq)
{
	char *map;

	nsd_logprintf(NSD_LOG_MIN, "entering list (winbind)\n");
	if (! rq)
		return NSD_ERROR;

	map = nsd_attr_fetch_string(rq->f_attrs, "table", (char*)0);
	if (! map ) {
		nsd_logprintf(NSD_LOG_MIN, "list (winbind) table not defined\n");
		rq->f_status = NS_BADREQ;
		return NSD_ERROR;
	}

	nsd_logprintf(NSD_LOG_MIN, "list (winbind %s)\n",map);

	return (do_list(0,rq));
}

static int
do_list(int state, nsd_file_t *rq)
{
	char *map;
	struct winbindd_request *request;

	nsd_logprintf(NSD_LOG_MIN, "entering do_list (winbind) state = %d\n",state);

	map = nsd_attr_fetch_string(rq->f_attrs, "table", (char*)0);
	request = (struct winbindd_request *)nsd_calloc(1,sizeof(struct winbindd_request));
	if (! request) {
		nsd_logprintf(NSD_LOG_RESOURCE,
			"do_list (winbind): failed malloc\n");
		return NSD_ERROR;
	}

	if (strcasecmp(map,"passwd.byname") == 0) {
	    switch (state) {
		case 0:
		    rq->f_cmd_data = (void *)WINBINDD_SETPWENT;
		    break;
		case 1:
		    request->data.num_entries = MAX_GETPWENT_USERS;
		    rq->f_cmd_data = (void *)WINBINDD_GETPWENT;
		    break;
		case 2:
		    rq->f_cmd_data = (void *)WINBINDD_ENDPWENT;
		    break;
		default:
		    nsd_logprintf(NSD_LOG_MIN, "do_list (winbind) unknown state\n");
		    SAFE_FREE(request);
		    rq->f_status = NS_NOTFOUND;
		    return NSD_NEXT;
	    }
	} else if (strcasecmp(map,"group.byname") == 0) {
	    switch (state) {
		case 0:
		    rq->f_cmd_data = (void *)WINBINDD_SETGRENT;
		    break;
		case 1:
		    request->data.num_entries = MAX_GETGRENT_USERS;
		    rq->f_cmd_data = (void *)WINBINDD_GETGRENT;
		    break;
		case 2:
		    rq->f_cmd_data = (void *)WINBINDD_ENDGRENT;
		    break;
		default:
		    nsd_logprintf(NSD_LOG_MIN, "do_list (winbind) unknown state\n");
		    SAFE_FREE(request);
		    rq->f_status = NS_NOTFOUND;
		    return NSD_NEXT;
	    }
	} else {
		/*
		 * Don't understand this map - just return not found
		 */
		nsd_logprintf(NSD_LOG_MIN, "do_list (winbind) unknown table\n");
		SAFE_FREE(request);
		rq->f_status = NS_NOTFOUND;
		return NSD_NEXT;
	}

	return(do_request(rq, request));
}

#endif /* HAVE_NS_API_H */