dtls.c 17.8 KB
Newer Older
venaas's avatar
venaas committed
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
/*
 * Copyright (C) 2008 Stig Venaas <venaas@uninett.no>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 */

#include <signal.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#ifdef SYS_SOLARIS9
#include <fcntl.h>
#endif
#include <sys/time.h>
#include <sys/types.h>
#include <sys/select.h>
#include <ctype.h>
#include <sys/wait.h>
#include <arpa/inet.h>
#include <regex.h>
#include <pthread.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
#include "debug.h"
#include "list.h"
31
#include "hash.h"
venaas's avatar
venaas committed
32
33
34
35
#include "util.h"
#include "radsecproxy.h"
#include "dtls.h"

venaas's avatar
venaas committed
36
37
38
static int client4_sock = -1;
static int client6_sock = -1;

39
40
41
42
43
44
45
46
47
48
49
50
struct sessioncacheentry {
    pthread_mutex_t mutex;
    struct queue *rbios;
    struct timeval expiry;
};

struct dtlsservernewparams {
    struct sessioncacheentry *sesscache;
    int sock;
    struct sockaddr_storage addr;    
};

venaas's avatar
venaas committed
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
int udp2bio(int s, struct queue *q, int cnt) {
    unsigned char *buf;
    BIO *rbio;

    if (cnt < 1)
	return 0;
    
    buf = malloc(cnt);
    if (!buf) {
	unsigned char err;
	debug(DBG_ERR, "udp2bio: malloc failed");
	recv(s, &err, 1, 0);
	return 0;
    }

    cnt = recv(s, buf, cnt, 0);
    if (cnt < 1) {
	debug(DBG_WARN, "udp2bio: recv failed");
	free(buf);
	return 0;
    }

    rbio = BIO_new_mem_buf(buf, cnt);
    BIO_set_mem_eof_return(rbio, -1);

    pthread_mutex_lock(&q->mutex);
    if (!list_push(q->entries, rbio)) {
	BIO_free(rbio);
	pthread_mutex_unlock(&q->mutex);
	return 0;
    }
    pthread_cond_signal(&q->cond);
    pthread_mutex_unlock(&q->mutex);
    return 1;
}

BIO *getrbio(SSL *ssl, struct queue *q, int timeout) {
    BIO *rbio;
    struct timeval now;
    struct timespec to;

    pthread_mutex_lock(&q->mutex);
    if (!(rbio = (BIO *)list_shift(q->entries))) {
	if (timeout) {
	    gettimeofday(&now, NULL);
	    memset(&to, 0, sizeof(struct timespec));
	    to.tv_sec = now.tv_sec + timeout;
	    pthread_cond_timedwait(&q->cond, &q->mutex, &to);
	} else
	    pthread_cond_wait(&q->cond, &q->mutex);
	rbio = (BIO *)list_shift(q->entries);
    }
    pthread_mutex_unlock(&q->mutex);
    return rbio;
}

107
int dtlsread(SSL *ssl, struct queue *q, unsigned char *buf, int num, int timeout) {
venaas's avatar
venaas committed
108
    int len, cnt;
109
110
    BIO *rbio;
    
venaas's avatar
venaas committed
111
112
113
114
115
    for (len = 0; len < num; len += cnt) {
	cnt = SSL_read(ssl, buf + len, num - len);
	if (cnt <= 0)
	    switch (cnt = SSL_get_error(ssl, cnt)) {
	    case SSL_ERROR_WANT_READ:
116
117
118
		rbio = getrbio(ssl, q, timeout);
		if (!rbio)
		    return 0;
venaas's avatar
venaas committed
119
		BIO_free(ssl->rbio);		
120
		ssl->rbio = rbio;
venaas's avatar
venaas committed
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
		cnt = 0;
		continue;
	    case SSL_ERROR_WANT_WRITE:
		cnt = 0;
		continue;
	    case SSL_ERROR_ZERO_RETURN:
		/* remote end sent close_notify, send one back */
		SSL_shutdown(ssl);
		return -1;
	    default:
		return -1;
	    }
    }
    return num;
}

137
138
139
140
141
142
143
144
145
146
147
148
149
150
/* accept if acc == 1, else connect */
SSL *dtlsacccon(uint8_t acc, SSL_CTX *ctx, int s, struct sockaddr *addr, struct queue *rbios) {
    SSL *ssl;
    int i, res;
    unsigned long error;
    BIO *mem0bio, *wbio;

    ssl = SSL_new(ctx);
    if (!ssl)
	return NULL;
    
    mem0bio = BIO_new(BIO_s_mem());
    BIO_set_mem_eof_return(mem0bio, -1);
    wbio = BIO_new_dgram(s, BIO_NOCLOSE);
151
    i = BIO_dgram_set_peer(wbio, addr); /* i just to avoid warning */
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
    SSL_set_bio(ssl, mem0bio, wbio);

    for (i = 0; i < 5; i++) {
        res = acc ? SSL_accept(ssl) : SSL_connect(ssl);
        if (res > 0)
            return ssl;
        if (res == 0)
            break;
        if (SSL_get_error(ssl, res) == SSL_ERROR_WANT_READ) {
            BIO_free(ssl->rbio);
            ssl->rbio = getrbio(ssl, rbios, 5);
            if (!ssl->rbio)
                break;
        }
        while ((error = ERR_get_error()))
            debug(DBG_ERR, "dtls%st: DTLS: %s", acc ? "accep" : "connec", ERR_error_string(error, NULL));
    }

    SSL_free(ssl);
    return NULL;
}

unsigned char *raddtlsget(SSL *ssl, struct queue *rbios, int timeout) {
venaas's avatar
venaas committed
175
176
177
178
    int cnt, len;
    unsigned char buf[4], *rad;

    for (;;) {
179
        cnt = dtlsread(ssl, rbios, buf, 4, timeout);
venaas's avatar
venaas committed
180
        if (cnt < 1) {
181
            debug(DBG_DBG, cnt ? "raddtlsget: connection lost" : "raddtlsget: timeout");
venaas's avatar
venaas committed
182
183
184
185
186
187
188
189
190
191
192
            return NULL;
        }

	len = RADLEN(buf);
	rad = malloc(len);
	if (!rad) {
	    debug(DBG_ERR, "raddtlsget: malloc failed");
	    continue;
	}
	memcpy(rad, buf, 4);
	
193
	cnt = dtlsread(ssl, rbios, rad + 4, len - 4, timeout);
venaas's avatar
venaas committed
194
        if (cnt < 1) {
195
            debug(DBG_DBG, cnt ? "raddtlsget: connection lost" : "raddtlsget: timeout");
venaas's avatar
venaas committed
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
            free(rad);
            return NULL;
        }
        
        if (len >= 20)
            break;
	
        free(rad);
        debug(DBG_WARN, "raddtlsget: packet smaller than minimum radius size");
    }
    
    debug(DBG_DBG, "raddtlsget: got %d bytes", len);
    return rad;
}

211
212
213
214
215
void *dtlsserverwr(void *arg) {
    int cnt;
    unsigned long error;
    struct client *client = (struct client *)arg;
    struct queue *replyq;
venaas's avatar
venaas committed
216
    struct request *reply;
217
    
218
    debug(DBG_DBG, "dtlsserverwr: starting for %s", addr2string(client->addr));
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
    replyq = client->replyq;
    for (;;) {
	pthread_mutex_lock(&replyq->mutex);
	while (!list_first(replyq->entries)) {
	    if (client->ssl) {	    
		debug(DBG_DBG, "dtlsserverwr: waiting for signal");
		pthread_cond_wait(&replyq->cond, &replyq->mutex);
		debug(DBG_DBG, "dtlsserverwr: got signal");
	    }
	    if (!client->ssl) {
		/* ssl might have changed while waiting */
		pthread_mutex_unlock(&replyq->mutex);
		debug(DBG_DBG, "dtlsserverwr: exiting as requested");
		ERR_remove_state(0);
		pthread_exit(NULL);
	    }
	}
venaas's avatar
venaas committed
236
	reply = (struct request *)list_shift(replyq->entries);
237
	pthread_mutex_unlock(&replyq->mutex);
venaas's avatar
venaas committed
238
	cnt = SSL_write(client->ssl, reply->replybuf, RADLEN(reply->replybuf));
239
	if (cnt > 0)
240
241
	    debug(DBG_DBG, "dtlsserverwr: sent %d bytes, Radius packet of length %d to %s",
		  cnt, RADLEN(reply->replybuf), addr2string(client->addr));
242
243
244
	else
	    while ((error = ERR_get_error()))
		debug(DBG_ERR, "dtlsserverwr: SSL: %s", ERR_error_string(error, NULL));
venaas's avatar
venaas committed
245
	freerq(reply);
246
247
248
    }
}

venaas's avatar
venaas committed
249
void dtlsserverrd(struct client *client) {
250
251
    struct request *rq;
    uint8_t *buf;
venaas's avatar
venaas committed
252
253
    pthread_t dtlsserverwrth;
    
254
    debug(DBG_DBG, "dtlsserverrd: starting for %s", addr2string(client->addr));
venaas's avatar
venaas committed
255
256
257
258
259
260
261

    if (pthread_create(&dtlsserverwrth, NULL, dtlsserverwr, (void *)client)) {
	debug(DBG_ERR, "dtlsserverrd: pthread_create failed");
	return;
    }

    for (;;) {
262
263
	buf = raddtlsget(client->ssl, client->rbios, IDLE_TIMEOUT);
	if (!buf) {
264
	    debug(DBG_ERR, "dtlsserverrd: connection from %s lost", addr2string(client->addr));
venaas's avatar
venaas committed
265
266
	    break;
	}
267
	debug(DBG_DBG, "dtlsserverrd: got Radius message from %s", addr2string(client->addr));
268
269
270
271
272
273
274
275
	rq = newrequest();
	if (!rq) {
	    free(buf);
	    continue;
	}
	rq->buf = buf;
	rq->from = client;
	if (!radsrv(rq)) {
276
	    debug(DBG_ERR, "dtlsserverrd: message authentication/validation failed, closing connection from %s", addr2string(client->addr));
venaas's avatar
venaas committed
277
278
279
280
281
282
283
284
285
286
287
288
289
	    break;
	}
    }
    
    /* stop writer by setting ssl to NULL and give signal in case waiting for data */
    client->ssl = NULL;

    pthread_mutex_lock(&client->replyq->mutex);
    pthread_cond_signal(&client->replyq->cond);
    pthread_mutex_unlock(&client->replyq->mutex);
    debug(DBG_DBG, "dtlsserverrd: waiting for writer to end");
    pthread_join(dtlsserverwrth, NULL);
    removeclientrqs(client);
290
    debug(DBG_DBG, "dtlsserverrd: reader for %s exiting", addr2string(client->addr));
venaas's avatar
venaas committed
291
292
293
}

void *dtlsservernew(void *arg) {
294
295
    struct dtlsservernewparams *params = (struct dtlsservernewparams *)arg;
    struct client *client;
296
297
298
    struct clsrvconf *conf;
    struct list_node *cur = NULL;
    SSL *ssl = NULL;
venaas's avatar
venaas committed
299
    X509 *cert = NULL;
300
301
302
303
    uint8_t delay = 60;

    debug(DBG_DBG, "dtlsservernew: starting");
    conf = find_clconf(RAD_DTLS, (struct sockaddr *)&params->addr, NULL);
304
    if (conf) {
305
	ssl = dtlsacccon(1, conf->ssl_ctx, params->sock, (struct sockaddr *)&params->addr, params->sesscache->rbios);
306
307
308
309
310
311
312
313
314
315
	if (!ssl)
	    goto exit;
	cert = verifytlscert(ssl);
        if (!cert)
            goto exit;
    }

    while (conf) {
	if (verifyconfcert(cert, conf)) {
	    X509_free(cert);
316
	    client = addclient(conf, 1);
317
	    if (client) {
318
		client->sock = params->sock;
319
		client->addr = addr_copy((struct sockaddr *)&params->addr);
320
		client->rbios = params->sesscache->rbios;
321
322
323
		client->ssl = ssl;
		dtlsserverrd(client);
		removeclient(client);
324
		delay = 0;
325
326
327
328
329
	    } else {
		debug(DBG_WARN, "dtlsservernew: failed to create new client instance");
	    }
	    goto exit;
	}
330
	conf = find_clconf(RAD_DTLS, (struct sockaddr *)&params->addr, &cur);
331
332
    }
    debug(DBG_WARN, "dtlsservernew: ignoring request, no matching TLS client");
venaas's avatar
venaas committed
333
334
335
336
337

    if (cert)
	X509_free(cert);

 exit:
338
339
340
341
    if (ssl) {
	SSL_shutdown(ssl);
	SSL_free(ssl);
    }
342
343
344
345
346
347
348
    pthread_mutex_lock(&params->sesscache->mutex);
    freebios(params->sesscache->rbios);
    params->sesscache->rbios = NULL;
    gettimeofday(&params->sesscache->expiry, NULL);
    params->sesscache->expiry.tv_sec += delay;
    pthread_mutex_unlock(&params->sesscache->mutex);
    free(params);
venaas's avatar
venaas committed
349
350
    ERR_remove_state(0);
    pthread_exit(NULL);
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
    debug(DBG_DBG, "dtlsservernew: exiting");
}

void cacheexpire(struct hash *cache, struct timeval *last) {
    struct timeval now;
    struct hash_entry *he;
    struct sessioncacheentry *e;
    
    gettimeofday(&now, NULL);
    if (now.tv_sec - last->tv_sec < 19)
	return;

    for (he = hash_first(cache); he; he = hash_next(he)) {
	e = (struct sessioncacheentry *)he->data;
	pthread_mutex_lock(&e->mutex);
	if (!e->expiry.tv_sec || e->expiry.tv_sec > now.tv_sec) {
	    pthread_mutex_unlock(&e->mutex);
	    continue;
	}
	debug(DBG_DBG, "cacheexpire: freeing entry");
	hash_extract(cache, he->key, he->keylen);
	if (e->rbios) {
	    freebios(e->rbios);
	    e->rbios = NULL;
	}
	pthread_mutex_unlock(&e->mutex);
	pthread_mutex_destroy(&e->mutex);
    }
    last->tv_sec = now.tv_sec;
}

void *udpdtlsserverrd(void *arg) {
    int ndesc, cnt, s = *(int *)arg;
    unsigned char buf[4];
    struct sockaddr_storage from;
    socklen_t fromlen = sizeof(from);
    struct dtlsservernewparams *params;
    fd_set readfds;
    struct timeval timeout, lastexpiry;
    pthread_t dtlsserverth;
    struct hash *sessioncache;
    struct sessioncacheentry *cacheentry;
    
    sessioncache = hash_create();
    if (!sessioncache)
	debugx(1, DBG_ERR, "udpdtlsserverrd: malloc failed");
    gettimeofday(&lastexpiry, NULL);
    
    for (;;) {
	FD_ZERO(&readfds);
        FD_SET(s, &readfds);
	memset(&timeout, 0, sizeof(struct timeval));
	timeout.tv_sec = 60;
	ndesc = select(s + 1, &readfds, NULL, NULL, &timeout);
	if (ndesc < 1) {
	    cacheexpire(sessioncache, &lastexpiry);
	    continue;
	}
	cnt = recvfrom(s, buf, 4, MSG_PEEK | MSG_TRUNC, (struct sockaddr *)&from, &fromlen);
	if (cnt == -1) {
	    debug(DBG_WARN, "udpdtlsserverrd: recv failed");
	    cacheexpire(sessioncache, &lastexpiry);
	    continue;
	}
	cacheentry = hash_read(sessioncache, &from, fromlen);
	if (cacheentry) {
	    debug(DBG_DBG, "udpdtlsserverrd: cache hit");
	    pthread_mutex_lock(&cacheentry->mutex);
	    if (cacheentry->rbios) {
		if (udp2bio(s, cacheentry->rbios, cnt))
421
		    debug(DBG_DBG, "udpdtlsserverrd: got DTLS in UDP from %s", addr2string((struct sockaddr *)&from));
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
	    } else
		recv(s, buf, 1, 0);
	    pthread_mutex_unlock(&cacheentry->mutex);
	    cacheexpire(sessioncache, &lastexpiry);
	    continue;
	}

	/* from new source */
	debug(DBG_DBG, "udpdtlsserverrd: cache miss");
	params = malloc(sizeof(struct dtlsservernewparams));
	if (!params) {
	    cacheexpire(sessioncache, &lastexpiry);
	    recv(s, buf, 1, 0);
	    continue;
	}
	memset(params, 0, sizeof(struct dtlsservernewparams));
	params->sesscache = malloc(sizeof(struct sessioncacheentry));
	if (!params->sesscache) {
	    free(params);
	    cacheexpire(sessioncache, &lastexpiry);
	    recv(s, buf, 1, 0);
	    continue;
	}
	memset(params->sesscache, 0, sizeof(struct sessioncacheentry));
	pthread_mutex_init(&params->sesscache->mutex, NULL);
	params->sesscache->rbios = newqueue();
	if (hash_insert(sessioncache, &from, fromlen, params->sesscache)) {
	    params->sock = s;
	    memcpy(&params->addr, &from, fromlen);

	    if (udp2bio(s, params->sesscache->rbios, cnt)) {
453
		debug(DBG_DBG, "udpdtlsserverrd: got DTLS in UDP from %s", addr2string((struct sockaddr *)&from));
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
		if (!pthread_create(&dtlsserverth, NULL, dtlsservernew, (void *)params)) {
		    pthread_detach(dtlsserverth);
		    cacheexpire(sessioncache, &lastexpiry);
		    continue;
		}
		debug(DBG_ERR, "udpdtlsserverrd: pthread_create failed");
	    }
	    hash_extract(sessioncache, &from, fromlen);
	}
	freebios(params->sesscache->rbios);
	pthread_mutex_destroy(&params->sesscache->mutex);
	free(params->sesscache);
	free(params);
	cacheexpire(sessioncache, &lastexpiry);
    }
venaas's avatar
venaas committed
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
}

int dtlsconnect(struct server *server, struct timeval *when, int timeout, char *text) {
    struct timeval now;
    time_t elapsed;
    X509 *cert;
    
    debug(DBG_DBG, "dtlsconnect: called from %s", text);
    pthread_mutex_lock(&server->lock);
    if (when && memcmp(&server->lastconnecttry, when, sizeof(struct timeval))) {
	/* already reconnected, nothing to do */
	debug(DBG_DBG, "dtlsconnect(%s): seems already reconnected", text);
	pthread_mutex_unlock(&server->lock);
	return 1;
    }

    for (;;) {
	gettimeofday(&now, NULL);
	elapsed = now.tv_sec - server->lastconnecttry.tv_sec;

	if (timeout && server->lastconnecttry.tv_sec && elapsed > timeout) {
	    debug(DBG_DBG, "dtlsconnect: timeout");
	    SSL_free(server->ssl);
	    server->ssl = NULL;
	    pthread_mutex_unlock(&server->lock);
	    return 0;
	}

	if (server->connectionok) {
	    server->connectionok = 0;
	    sleep(2);
	} else if (elapsed < 1)
	    sleep(2);
	else if (elapsed < 60) {
	    debug(DBG_INFO, "dtlsconnect: sleeping %lds", elapsed);
	    sleep(elapsed);
	} else if (elapsed < 100000) {
	    debug(DBG_INFO, "dtlsconnect: sleeping %ds", 60);
	    sleep(60);
	} else
	    server->lastconnecttry.tv_sec = now.tv_sec;  /* no sleep at startup */
	debug(DBG_WARN, "dtlsconnect: trying to open DTLS connection to %s port %s", server->conf->host, server->conf->port);

	SSL_free(server->ssl);
	server->ssl = dtlsacccon(0, server->conf->ssl_ctx, server->sock, server->conf->addrinfo->ai_addr, server->rbios);
	if (!server->ssl)
	    continue;
	debug(DBG_DBG, "dtlsconnect: DTLS: ok");
	
	cert = verifytlscert(server->ssl);
	if (!cert)
	    continue;
	
	if (verifyconfcert(cert, server->conf))
	    break;
	X509_free(cert);
    }
    X509_free(cert);
    debug(DBG_WARN, "dtlsconnect: DTLS connection to %s port %s up", server->conf->host, server->conf->port);
    gettimeofday(&server->lastconnecttry, NULL);
    pthread_mutex_unlock(&server->lock);
    return 1;
}

int clientradputdtls(struct server *server, unsigned char *rad) {
    int cnt;
    size_t len;
    unsigned long error;
    struct clsrvconf *conf = server->conf;
538
539
540

    if (!server->ssl)
	return 0;
venaas's avatar
venaas committed
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
    len = RADLEN(rad);
    while ((cnt = SSL_write(server->ssl, rad, len)) <= 0) {
	while ((error = ERR_get_error()))
	    debug(DBG_ERR, "clientradputdtls: DTLS: %s", ERR_error_string(error, NULL));
    }
    debug(DBG_DBG, "clientradputdtls: Sent %d bytes, Radius packet of length %d to DTLS peer %s", cnt, len, conf->host);
    return 1;
}

/* reads UDP containing DTLS and passes it on to dtlsclientrd */
void *udpdtlsclientrd(void *arg) {
    int cnt, s = *(int *)arg;
    unsigned char buf[4];
    struct sockaddr_storage from;
    socklen_t fromlen = sizeof(from);
    struct clsrvconf *conf;
    fd_set readfds;
    
    for (;;) {
	FD_ZERO(&readfds);
        FD_SET(s, &readfds);
	if (select(s + 1, &readfds, NULL, NULL, NULL) < 1)
	    continue;
	cnt = recvfrom(s, buf, 4, MSG_PEEK | MSG_TRUNC, (struct sockaddr *)&from, &fromlen);
	if (cnt == -1) {
	    debug(DBG_WARN, "udpdtlsclientrd: recv failed");
	    continue;
	}
	
	conf = find_srvconf(RAD_DTLS, (struct sockaddr *)&from, NULL);
	if (!conf) {
572
	    debug(DBG_WARN, "udpdtlsclientrd: got packet from wrong or unknown DTLS peer %s, ignoring", addr2string((struct sockaddr *)&from));
venaas's avatar
venaas committed
573
574
575
576
	    recv(s, buf, 4, 0);
	    continue;
	}
	if (udp2bio(s, conf->servers->rbios, cnt))
577
	    debug(DBG_DBG, "radudpget: got DTLS in UDP from %s", addr2string((struct sockaddr *)&from));
venaas's avatar
venaas committed
578
579
580
581
582
583
584
    }
}

void *dtlsclientrd(void *arg) {
    struct server *server = (struct server *)arg;
    unsigned char *buf;
    struct timeval lastconnecttry;
585
    int secs;
venaas's avatar
venaas committed
586
587
588
589
    
    for (;;) {
	/* yes, lastconnecttry is really necessary */
	lastconnecttry = server->lastconnecttry;
590
	for (secs = 0; !(buf = raddtlsget(server->ssl, server->rbios, 10)) && !server->lostrqs && secs < IDLE_TIMEOUT; secs += 10);
venaas's avatar
venaas committed
591
592
593
594
	if (!buf) {
	    dtlsconnect(server, &lastconnecttry, 0, "dtlsclientrd");
	    continue;
	}
venaas's avatar
venaas committed
595
	replyh(server, buf);
venaas's avatar
venaas committed
596
    }
597
598
599
    ERR_remove_state(0);
    server->clientrdgone = 1;
    return NULL;
venaas's avatar
venaas committed
600
}
venaas's avatar
venaas committed
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

void addserverextradtls(struct clsrvconf *conf) {
    switch (conf->addrinfo->ai_family) {
    case AF_INET:
	if (client4_sock < 0) {
	    client4_sock = bindtoaddr(getsrcprotores(RAD_DTLS), AF_INET, 0, 1);
	    if (client4_sock < 0)
		debugx(1, DBG_ERR, "addserver: failed to create client socket for server %s", conf->host);
	}
	conf->servers->sock = client4_sock;
	break;
    case AF_INET6:
	if (client6_sock < 0) {
	    client6_sock = bindtoaddr(getsrcprotores(RAD_DTLS), AF_INET6, 0, 1);
	    if (client6_sock < 0)
		debugx(1, DBG_ERR, "addserver: failed to create client socket for server %s", conf->host);
	}
	conf->servers->sock = client6_sock;
	break;
    default:
	debugx(1, DBG_ERR, "addserver: unsupported address family");
    }
}

void initextradtls() {
    pthread_t cl4th, cl6th;
    
    if (client4_sock >= 0)
	if (pthread_create(&cl4th, NULL, udpdtlsclientrd, (void *)&client4_sock))
	    debugx(1, DBG_ERR, "pthread_create failed");
    if (client6_sock >= 0)
	if (pthread_create(&cl6th, NULL, udpdtlsclientrd, (void *)&client6_sock))
	    debugx(1, DBG_ERR, "pthread_create failed");
}