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Merge branch 'master' of git.dolda2000.com:/srv/git/r/ashd
[ashd.git] / src / ssl-gnutls.c
CommitLineData
6ca53b2e
FT		 1/*
2 ashd - A Sane HTTP Daemon
3 Copyright (C) 2008 Fredrik Tolf <fredrik@dolda2000.com>
4
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, either version 3 of the License, or
8 (at your option) any later version.
9
10 This program 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
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17*/
18
19#include <stdlib.h>
20#include <unistd.h>
21#include <string.h>
22#include <fcntl.h>
26902200 23#include <dirent.h>
6ca53b2e
FT		 24#include <sys/socket.h>
25#include <netinet/in.h>
26#include <arpa/inet.h>
27#include <errno.h>
28
29#ifdef HAVE_CONFIG_H
30#include <config.h>
31#endif
32#include <utils.h>
33#include <mt.h>
34#include <mtio.h>
35#include <req.h>
36#include <log.h>
fc253e2f 37#include <bufio.h>
6ca53b2e
FT		 38
39#include "htparser.h"
40
41#ifdef HAVE_GNUTLS
42
43#include <gnutls/gnutls.h>
28b2e619
FT		 44#include <gnutls/x509.h>
45
46struct namedcreds {
47 char **names;
48 gnutls_certificate_credentials_t creds;
49};
50
51struct ncredbuf {
52 struct namedcreds **b;
53 size_t s, d;
54};
6ca53b2e
FT		 55
56struct sslport {
bcd711f0 57 int fd, sport, clreq;
6ca53b2e 58 gnutls_certificate_credentials_t creds;
76d6825e 59 gnutls_priority_t ciphers;
28b2e619 60 struct namedcreds **ncreds;
6ca53b2e
FT		 61};
62
63struct sslconn {
64 int fd;
65 struct sslport *port;
66 struct sockaddr_storage name;
67 gnutls_session_t sess;
68 struct charbuf in;
69};
70
d8d4ed57
FT		 71struct savedsess {
72 struct savedsess *next, *prev;
73 gnutls_datum_t key, value;
74};
75
7a59f41f
FT		 76struct certbuffer {
77 gnutls_x509_crt_t *b;
78 size_t s, d;
79};
80
d8d4ed57
FT		 81static int numconn = 0, numsess = 0;
82static struct btree *sessidx = NULL;
83static struct savedsess *sesslistf = NULL, *sesslistl = NULL;
84
85static int sesscmp(void *ap, void *bp)
86{
87 struct savedsess *a = ap, *b = bp;
88
89 if(a->key.size != b->key.size)
90 return(a->key.size - b->key.size);
91 return(memcmp(a->key.data, b->key.data, a->key.size));
92}
93
94static gnutls_datum_t sessdbfetch(void *uudata, gnutls_datum_t key)
95{
96 struct savedsess *sess, lkey;
97 gnutls_datum_t ret;
98
99 memset(&ret, 0, sizeof(ret));
100 lkey.key = key;
101 if((sess = btreeget(sessidx, &lkey, sesscmp)) == NULL)
102 return(ret);
103 ret.data = memcpy(gnutls_malloc(ret.size = sess->value.size), sess->value.data, sess->value.size);
104 return(ret);
105}
106
107static void freesess(struct savedsess *sess)
108{
109 bbtreedel(&sessidx, sess, sesscmp);
110 if(sess->next)
111 sess->next->prev = sess->prev;
112 if(sess->prev)
113 sess->prev->next = sess->next;
114 if(sess == sesslistf)
115 sesslistf = sess->next;
116 if(sess == sesslistl)
117 sesslistl = sess->prev;
118 free(sess->key.data);
119 free(sess->value.data);
120 free(sess);
121 numsess--;
122}
123
124static int sessdbdel(void *uudata, gnutls_datum_t key)
125{
126 struct savedsess *sess, lkey;
127
128 lkey.key = key;
129 if((sess = btreeget(sessidx, &lkey, sesscmp)) == NULL)
130 return(-1);
131 freesess(sess);
132 return(0);
133}
134
135static void cleansess(void)
136{
137 while(numsess > (max(numconn, 1) * 100))
138 freesess(sesslistl);
139}
140
141static int sessdbstore(void *uudata, gnutls_datum_t key, gnutls_datum_t value)
142{
143 static int cc = 0;
144 struct savedsess *sess, lkey;
145
146 if((value.data == NULL) || (value.size == 0)) {
147 sessdbdel(NULL, key);
148 return(0);
149 }
150 lkey.key = key;
151 if((sess = btreeget(sessidx, &lkey, sesscmp)) == NULL) {
152 omalloc(sess);
153 sess->key.data = memcpy(smalloc(sess->key.size = key.size), key.data, key.size);
154 sess->value.data = memcpy(smalloc(sess->value.size = value.size), value.data, value.size);
155 bbtreeput(&sessidx, sess, sesscmp);
156 sess->prev = NULL;
157 sess->next = sesslistf;
158 if(sesslistf)
159 sesslistf->prev = sess;
160 sesslistf = sess;
161 if(sesslistl == NULL)
162 sesslistl = sess;
163 numsess++;
164 } else {
165 free(sess->value.data);
166 sess->value.data = memcpy(smalloc(sess->value.size = value.size), value.data, value.size);
167 if(sess != sesslistf) {
168 if(sess->next)
169 sess->next->prev = sess->prev;
170 if(sess->prev)
171 sess->prev->next = sess->next;
172 if(sess == sesslistl)
173 sesslistl = sess->prev;
174 sess->prev = NULL;
175 sess->next = sesslistf;
176 if(sesslistf)
177 sesslistf->prev = sess;
178 sesslistf = sess;
179 }
180 }
181 if(cc++ > 100) {
182 cleansess();
183 cc = 0;
184 }
185 return(0);
186}
187
6ca53b2e
FT		 188static int tlsblock(int fd, gnutls_session_t sess, time_t to)
189{
190 if(gnutls_record_get_direction(sess))
191 return(block(fd, EV_WRITE, to));
192 else
193 return(block(fd, EV_READ, to));
194}
195
fc253e2f 196static ssize_t sslread(void *cookie, void *buf, size_t len)
6ca53b2e
FT		 197{
198 struct sslconn *ssl = cookie;
199 ssize_t xf;
200 int ret;
201
202 while(ssl->in.d == 0) {
203 sizebuf(ssl->in, ssl->in.d + 1024);
204 ret = gnutls_record_recv(ssl->sess, ssl->in.b + ssl->in.d, ssl->in.s - ssl->in.d);
205 if((ret == GNUTLS_E_INTERRUPTED) || (ret == GNUTLS_E_AGAIN)) {
206 if(tlsblock(ssl->fd, ssl->sess, 60) == 0) {
207 errno = ETIMEDOUT;
208 return(-1);
209 }
210 } else if(ret < 0) {
211 errno = EIO;
212 return(-1);
213 } else if(ret == 0) {
214 return(0);
215 } else {
216 ssl->in.d += ret;
217 }
218 }
219 xf = min(ssl->in.d, len);
220 memcpy(buf, ssl->in.b, xf);
221 memmove(ssl->in.b, ssl->in.b + xf, ssl->in.d -= xf);
222 return(xf);
223}
224
fc253e2f 225static ssize_t sslwrite(void *cookie, const void *buf, size_t len)
6ca53b2e
FT		 226{
227 struct sslconn *ssl = cookie;
228 int ret;
229 size_t off;
230
231 off = 0;
232 while(off < len) {
233 ret = gnutls_record_send(ssl->sess, buf + off, len - off);
234 if((ret == GNUTLS_E_INTERRUPTED) || (ret == GNUTLS_E_AGAIN)) {
235 if(tlsblock(ssl->fd, ssl->sess, 60) == 0) {
236 if(off == 0) {
237 errno = ETIMEDOUT;
238 return(-1);
239 }
240 return(off);
241 }
242 } else if(ret < 0) {
243 if(off == 0) {
244 errno = EIO;
245 return(-1);
246 }
247 return(off);
248 } else {
249 off += ret;
250 }
251 }
252 return(off);
253}
254
255static int sslclose(void *cookie)
256{
5ba5dd0b
FT		 257 struct sslconn *ssl = cookie;
258
259 buffree(ssl->in);
6ca53b2e
FT		 260 return(0);
261}
262
fc253e2f 263static struct bufioops iofuns = {
6ca53b2e
FT		 264 .read = sslread,
265 .write = sslwrite,
266 .close = sslclose,
267};
268
269static int initreq(struct conn *conn, struct hthead *req)
270{
271 struct sslconn *ssl = conn->pdata;
6b84641a
FT		 272 struct sockaddr_storage sa;
273 socklen_t salen;
e5c93010
FT		 274 gnutls_datum_t sessid;
275 char *esessid;
6ca53b2e 276
7595e3a4 277 headappheader(req, "X-Ash-Address", formathaddress((struct sockaddr *)&ssl->name, sizeof(sa)));
a5f63653 278 if(ssl->name.ss_family == AF_INET)
6ca53b2e 279 headappheader(req, "X-Ash-Port", sprintf3("%i", ntohs(((struct sockaddr_in *)&ssl->name)->sin_port)));
a5f63653 280 else if(ssl->name.ss_family == AF_INET6)
6ca53b2e 281 headappheader(req, "X-Ash-Port", sprintf3("%i", ntohs(((struct sockaddr_in6 *)&ssl->name)->sin6_port)));
6b84641a 282 salen = sizeof(sa);
7595e3a4
FT		 283 if(!getsockname(ssl->fd, (struct sockaddr *)&sa, &salen))
284 headappheader(req, "X-Ash-Server-Address", formathaddress((struct sockaddr *)&sa, sizeof(sa)));
6ca53b2e
FT		 285 headappheader(req, "X-Ash-Server-Port", sprintf3("%i", ssl->port->sport));
286 headappheader(req, "X-Ash-Protocol", "https");
e5c93010
FT		 287 if(gnutls_session_get_id2(ssl->sess, &sessid) == GNUTLS_E_SUCCESS) {
288 esessid = base64encode((void *)sessid.data, sessid.size);
289 headappheader(req, "X-Ash-TLS-Session", esessid);
290 free(esessid);
291 }
6ca53b2e
FT		 292 return(0);
293}
294
d1a6f43c
FT		 295static int setcreds(gnutls_session_t sess)
296{
297 int i, o, u;
298 struct sslport *pd;
299 unsigned int ntype;
300 char nambuf[256];
301 size_t namlen;
302
303 pd = gnutls_session_get_ptr(sess);
304 for(i = 0; 1; i++) {
305 namlen = sizeof(nambuf);
306 if(gnutls_server_name_get(sess, nambuf, &namlen, &ntype, i) != 0)
307 break;
308 if(ntype != GNUTLS_NAME_DNS)
309 continue;
310 for(o = 0; pd->ncreds[o] != NULL; o++) {
311 for(u = 0; pd->ncreds[o]->names[u] != NULL; u++) {
312 if(!strcmp(pd->ncreds[o]->names[u], nambuf)) {
313 gnutls_credentials_set(sess, GNUTLS_CRD_CERTIFICATE, pd->ncreds[o]->creds);
314 if(pd->clreq)
315 gnutls_certificate_server_set_request(sess, GNUTLS_CERT_REQUEST);
316 return(0);
317 }
318 }
319 }
320 }
321 gnutls_credentials_set(sess, GNUTLS_CRD_CERTIFICATE, pd->creds);
322 if(pd->clreq)
323 gnutls_certificate_server_set_request(sess, GNUTLS_CERT_REQUEST);
324 return(0);
325}
326
6ca53b2e
FT		 327static void servessl(struct muth *muth, va_list args)
328{
329 vavar(int, fd);
330 vavar(struct sockaddr_storage, name);
331 vavar(struct sslport *, pd);
332 struct conn conn;
333 struct sslconn ssl;
334 gnutls_session_t sess;
335 int ret;
1b77e192 336
d8d4ed57 337 numconn++;
6ca53b2e
FT		 338 fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK);
339 gnutls_init(&sess, GNUTLS_SERVER);
76d6825e 340 gnutls_priority_set(sess, pd->ciphers);
d8d4ed57
FT		 341 gnutls_db_set_retrieve_function(sess, sessdbfetch);
342 gnutls_db_set_store_function(sess, sessdbstore);
343 gnutls_db_set_remove_function(sess, sessdbdel);
344 gnutls_db_set_ptr(sess, NULL);
d1a6f43c 345 gnutls_session_set_ptr(sess, pd);
1b77e192 346 gnutls_handshake_set_post_client_hello_function(sess, setcreds);
6ca53b2e
FT		 347 gnutls_transport_set_ptr(sess, (gnutls_transport_ptr_t)(intptr_t)fd);
348 while((ret = gnutls_handshake(sess)) != 0) {
349 if((ret != GNUTLS_E_INTERRUPTED) && (ret != GNUTLS_E_AGAIN))
350 goto out;
351 if(tlsblock(fd, sess, 60) <= 0)
352 goto out;
353 }
354 memset(&conn, 0, sizeof(conn));
355 memset(&ssl, 0, sizeof(ssl));
356 conn.pdata = &ssl;
357 conn.initreq = initreq;
358 ssl.fd = fd;
359 ssl.port = pd;
360 ssl.name = name;
361 ssl.sess = sess;
362 bufinit(ssl.in);
a68db17d 363 serve(bioopen(&ssl, &iofuns), fd, &conn);
6ca53b2e
FT		 364
365out:
366 gnutls_deinit(sess);
367 close(fd);
d8d4ed57 368 numconn--;
6ca53b2e
FT		 369}
370
371static void listenloop(struct muth *muth, va_list args)
372{
373 vavar(struct sslport *, pd);
f24b7bb5 374 int i, ns, n;
6ca53b2e
FT		 375 struct sockaddr_storage name;
376 socklen_t namelen;
377
3ae56649 378 fcntl(pd->fd, F_SETFL, fcntl(pd->fd, F_GETFL) | O_NONBLOCK);
6ca53b2e
FT		 379 while(1) {
380 namelen = sizeof(name);
cac13158
FT		 381 if(block(pd->fd, EV_READ, 0) == 0)
382 goto out;
f24b7bb5
FT		 383 n = 0;
384 while(1) {
385 ns = accept(pd->fd, (struct sockaddr *)&name, &namelen);
386 if(ns < 0) {
387 if(errno == EAGAIN)
388 break;
51893006
FT		 389 if(errno == ECONNABORTED)
390 continue;
f24b7bb5
FT		 391 flog(LOG_ERR, "accept: %s", strerror(errno));
392 goto out;
393 }
394 mustart(servessl, ns, name, pd);
395 if(++n >= 100)
396 break;
6ca53b2e 397 }
6ca53b2e
FT		 398 }
399
400out:
401 close(pd->fd);
402 free(pd);
8e9ec020
FT		 403 for(i = 0; i < listeners.d; i++) {
404 if(listeners.b[i] == muth)
405 bufdel(listeners, i);
406 }
6ca53b2e
FT		 407}
408
2daf4411
FT		 409static gnutls_dh_params_t dhparams(void)
410{
411 static int inited = 0;
412 static gnutls_dh_params_t pars;
413 int ret;
414
415 if(!inited) {
416 if(((ret = gnutls_dh_params_init(&pars)) != 0) ||
417 ((ret = gnutls_dh_params_generate2(pars, 2048)) != 0)) {
418 flog(LOG_ERR, "GnuTLS could not generate Diffie-Hellman parameters: %s", gnutls_strerror(ret));
419 exit(1);
420 }
421 inited = 1;
422 }
423 return(pars);
424}
425
6ca53b2e
FT		 426static void init(void)
427{
428 static int inited = 0;
429 int ret;
430
431 if(inited)
432 return;
433 inited = 1;
434 if((ret = gnutls_global_init()) != 0) {
435 flog(LOG_ERR, "could not initialize GnuTLS: %s", gnutls_strerror(ret));
436 exit(1);
437 }
6ca53b2e
FT		 438}
439
7a59f41f
FT		 440/* This implementation seems somewhat ugly, but it's the way the
441 * GnuTLS implements the same thing internally, so it should probably
442 * be interoperable, at least. */
443static int readcrtchain(struct certbuffer *ret, struct charbuf *pem)
444{
445 static char *headers[] = {"-----BEGIN CERTIFICATE", "-----BEGIN X509 CERTIFICATE"};
446 int i, rv;
447 char *p, *p2, *f;
448 gnutls_x509_crt_t crt;
449
450 for(i = 0, p = NULL; i < sizeof(headers) / sizeof(*headers); i++) {
451 f = memmem(pem->b, pem->d, headers[i], strlen(headers[i]));
2e90aa50 452 if((f != NULL) && ((p == NULL) || (f < p)))
7a59f41f
FT		 453 p = f;
454 }
455 if(p == NULL)
456 return(-GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE);
457 do {
458 if((rv = gnutls_x509_crt_init(&crt)) < 0)
459 goto error;
460 if((rv = gnutls_x509_crt_import(crt, &(gnutls_datum_t){.data = (unsigned char *)p, .size = pem->d - (p - pem->b)}, GNUTLS_X509_FMT_PEM)) < 0) {
461 gnutls_x509_crt_deinit(crt);
462 goto error;
463 }
464 bufadd(*ret, crt);
465 for(i = 0, p2 = NULL; i < sizeof(headers) / sizeof(*headers); i++) {
466 f = memmem(p + 1, pem->d - (p + 1 - pem->b), headers[i], strlen(headers[i]));
2e90aa50 467 if((f != NULL) && ((p2 == NULL) || (f < p2)))
7a59f41f
FT		 468 p2 = f;
469 }
470 } while((p = p2) != NULL);
471 return(0);
472error:
473 for(i = 0; i < ret->d; i++)
474 gnutls_x509_crt_deinit(ret->b[i]);
475 ret->d = 0;
476 return(rv);
477}
478
479static struct namedcreds *readncreds(char *file, gnutls_x509_privkey_t defkey)
28b2e619
FT		 480{
481 int i, fd, ret;
482 struct namedcreds *nc;
7a59f41f 483 struct certbuffer crts;
28b2e619
FT		 484 gnutls_x509_privkey_t key;
485 char cn[1024];
486 size_t cnl;
28b2e619
FT		 487 struct charbuf keybuf;
488 struct charvbuf names;
489 unsigned int type;
490
491 bufinit(keybuf);
7a59f41f 492 bufinit(crts);
28b2e619
FT		 493 bufinit(names);
494 if((fd = open(file, O_RDONLY)) < 0) {
495 flog(LOG_ERR, "ssl: %s: %s", file, strerror(errno));
496 exit(1);
497 }
498 while(1) {
499 sizebuf(keybuf, keybuf.d + 1024);
500 ret = read(fd, keybuf.b + keybuf.d, keybuf.s - keybuf.d);
501 if(ret < 0) {
502 flog(LOG_ERR, "ssl: reading from %s: %s", file, strerror(errno));
503 exit(1);
504 } else if(ret == 0) {
505 break;
506 }
507 keybuf.d += ret;
508 }
509 close(fd);
7a59f41f
FT		 510 if((ret = readcrtchain(&crts, &keybuf)) != 0) {
511 flog(LOG_ERR, "ssl: could not load certificate chain from %s: %s", file, gnutls_strerror(ret));
28b2e619
FT		 512 exit(1);
513 }
514 cnl = sizeof(cn) - 1;
7a59f41f 515 if((ret = gnutls_x509_crt_get_dn_by_oid(crts.b[0], GNUTLS_OID_X520_COMMON_NAME, 0, 0, cn, &cnl)) != 0) {
28b2e619
FT		 516 flog(LOG_ERR, "ssl: could not read common name from %s: %s", file, gnutls_strerror(ret));
517 exit(1);
518 }
519 cn[cnl] = 0;
520 bufadd(names, sstrdup(cn));
521 for(i = 0; 1; i++) {
522 cnl = sizeof(cn) - 1;
7a59f41f 523 if(gnutls_x509_crt_get_subject_alt_name2(crts.b[0], i, cn, &cnl, &type, NULL) < 0)
28b2e619
FT		 524 break;
525 cn[cnl] = 0;
526 if(type == GNUTLS_SAN_DNSNAME)
527 bufadd(names, sstrdup(cn));
528 }
529 gnutls_x509_privkey_init(&key);
7a59f41f
FT		 530 if((ret = gnutls_x509_privkey_import(key, &(gnutls_datum_t){.data = (unsigned char *)keybuf.b, .size = keybuf.d}, GNUTLS_X509_FMT_PEM)) != 0) {
531 if(ret == GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE) {
532 gnutls_x509_privkey_deinit(key);
533 key = defkey;
534 } else {
535 flog(LOG_ERR, "ssl: could not load key from %s: %s", file, gnutls_strerror(ret));
536 exit(1);
537 }
28b2e619
FT		 538 }
539 buffree(keybuf);
540 bufadd(names, NULL);
541 omalloc(nc);
542 nc->names = names.b;
543 gnutls_certificate_allocate_credentials(&nc->creds);
7a59f41f 544 if((ret = gnutls_certificate_set_x509_key(nc->creds, crts.b, crts.d, key)) != 0) {
28b2e619
FT		 545 flog(LOG_ERR, "ssl: could not use certificate from %s: %s", file, gnutls_strerror(ret));
546 exit(1);
547 }
2daf4411 548 gnutls_certificate_set_dh_params(nc->creds, dhparams());
28b2e619
FT		 549 return(nc);
550}
551
7a59f41f 552static void readncdir(struct ncredbuf *buf, char *dir, gnutls_x509_privkey_t defkey)
26902200
FT		 553{
554 DIR *d;
555 struct dirent *e;
556 size_t es;
557
558 if((d = opendir(dir)) == NULL) {
559 flog(LOG_ERR, "ssl: could not read certificate directory %s: %s", dir, strerror(errno));
560 exit(1);
561 }
562 while((e = readdir(d)) != NULL) {
563 if(e->d_name[0] == '.')
564 continue;
565 if((es = strlen(e->d_name)) <= 4)
566 continue;
567 if(strcmp(e->d_name + es - 4, ".crt"))
568 continue;
7a59f41f 569 bufadd(*buf, readncreds(sprintf3("%s/%s", dir, e->d_name), defkey));
26902200
FT		 570 }
571 closedir(d);
572}
573
6ca53b2e
FT		 574void handlegnussl(int argc, char **argp, char **argv)
575{
bcd711f0 576 int i, ret, port, fd, clreq;
6ca53b2e 577 gnutls_certificate_credentials_t creds;
76d6825e 578 gnutls_priority_t ciphers;
7a59f41f 579 gnutls_x509_privkey_t defkey;
28b2e619 580 struct ncredbuf ncreds;
7a59f41f 581 struct charvbuf ncertf, ncertd;
6ca53b2e 582 struct sslport *pd;
76d6825e 583 char *crtfile, *keyfile, *perr;
6ca53b2e
FT		 584
585 init();
586 port = 443;
bcd711f0 587 clreq = 0;
28b2e619 588 bufinit(ncreds);
7a59f41f
FT		 589 bufinit(ncertf);
590 bufinit(ncertd);
6ca53b2e
FT		 591 gnutls_certificate_allocate_credentials(&creds);
592 keyfile = crtfile = NULL;
76d6825e 593 ciphers = NULL;
6ca53b2e
FT		 594 for(i = 0; i < argc; i++) {
595 if(!strcmp(argp[i], "help")) {
596 printf("ssl handler parameters:\n");
597 printf("\tcert=CERT-FILE [mandatory]\n");
598 printf("\t\tThe name of the file to read the certificate from.\n");
599 printf("\tkey=KEY-FILE [same as CERT-FILE]\n");
600 printf("\t\tThe name of the file to read the private key from.\n");
76d6825e
FT		 601 printf("\tprio=PRIORITIES [NORMAL]\n");
602 printf("\t\tCiphersuite priorities, as a GnuTLS priority string.\n");
6ca53b2e
FT		 603 printf("\ttrust=CA-FILE [no default]\n");
604 printf("\t\tThe name of a file to read trusted certificates from.\n");
605 printf("\t\tMay be given multiple times.\n");
606 printf("\tcrl=CRL-FILE [no default]\n");
607 printf("\t\tThe name of a file to read revocation lists from.\n");
608 printf("\t\tMay be given multiple times.\n");
4094af22
FT		 609 printf("\tncert=CERT-FILE [no default]\n");
610 printf("\t\tThe name of a file to read a named certificate from,\n");
611 printf("\t\tfor use with SNI-enabled clients.\n");
612 printf("\t\tMay be given multiple times.\n");
613 printf("\tncertdir=DIR [no default]\n");
614 printf("\t\tRead all *.crt files in the given directory as if they\n");
615 printf("\t\twere given with `ncert' options.\n");
616 printf("\t\tMay be given multiple times.\n");
6ca53b2e
FT		 617 printf("\tport=PORT [443]\n");
618 printf("\t\tThe TCP port to listen on.\n");
619 printf("\n");
620 printf("\tAll X.509 data files must be PEM-encoded.\n");
4094af22
FT		 621 printf("\tIf any certificates were given with `ncert' options, they will be\n");
622 printf("\tused if a client explicitly names one of them with a\n");
623 printf("\tserver-name indication. If a client indicates no server name,\n");
624 printf("\tor if a server-name indication does not match any given\n");
625 printf("\tcertificate, the certificate given with the `cert' option will\n");
626 printf("\tbe used instead.\n");
6ca53b2e
FT		 627 exit(0);
628 } else if(!strcmp(argp[i], "cert")) {
629 crtfile = argv[i];
630 } else if(!strcmp(argp[i], "key")) {
631 keyfile = argv[i];
76d6825e
FT		 632 } else if(!strcmp(argp[i], "prio")) {
633 if(ciphers != NULL)
634 gnutls_priority_deinit(ciphers);
635 ret = gnutls_priority_init(&ciphers, argv[i], (const char **)&perr);
636 if(ret == GNUTLS_E_INVALID_REQUEST) {
637 flog(LOG_ERR, "ssl: invalid cipher priority string, at `%s'", perr);
638 exit(1);
639 } else if(ret != 0) {
640 flog(LOG_ERR, "ssl: could not initialize cipher priorities: %s", gnutls_strerror(ret));
641 exit(1);
642 }
6ca53b2e
FT		 643 } else if(!strcmp(argp[i], "trust")) {
644 if((ret = gnutls_certificate_set_x509_trust_file(creds, argv[i], GNUTLS_X509_FMT_PEM)) != 0) {
645 flog(LOG_ERR, "ssl: could not load trust file `%s': %s", argv[i], gnutls_strerror(ret));
646 exit(1);
647 }
28b2e619
FT		 648 for(i = 0; i < ncreds.d; i++) {
649 if((ret = gnutls_certificate_set_x509_trust_file(ncreds.b[i]->creds, argv[i], GNUTLS_X509_FMT_PEM)) != 0) {
650 flog(LOG_ERR, "ssl: could not load trust file `%s': %s", argv[i], gnutls_strerror(ret));
651 exit(1);
652 }
653 }
bcd711f0 654 clreq = 1;
6ca53b2e
FT		 655 } else if(!strcmp(argp[i], "crl")) {
656 if((ret = gnutls_certificate_set_x509_crl_file(creds, argv[i], GNUTLS_X509_FMT_PEM)) != 0) {
657 flog(LOG_ERR, "ssl: could not load CRL file `%s': %s", argv[i], gnutls_strerror(ret));
658 exit(1);
659 }
28b2e619
FT		 660 for(i = 0; i < ncreds.d; i++) {
661 if((ret = gnutls_certificate_set_x509_crl_file(ncreds.b[i]->creds, argv[i], GNUTLS_X509_FMT_PEM)) != 0) {
662 flog(LOG_ERR, "ssl: could not load CRL file `%s': %s", argv[i], gnutls_strerror(ret));
663 exit(1);
664 }
665 }
bcd711f0 666 clreq = 1;
6ca53b2e
FT		 667 } else if(!strcmp(argp[i], "port")) {
668 port = atoi(argv[i]);
28b2e619 669 } else if(!strcmp(argp[i], "ncert")) {
7a59f41f 670 bufadd(ncertf, argv[i]);
26902200 671 } else if(!strcmp(argp[i], "ncertdir")) {
7a59f41f 672 bufadd(ncertd, argv[i]);
6ca53b2e
FT		 673 } else {
674 flog(LOG_ERR, "unknown parameter `%s' to ssl handler", argp[i]);
675 exit(1);
676 }
677 }
678 if(crtfile == NULL) {
679 flog(LOG_ERR, "ssl: needs certificate file at the very least");
680 exit(1);
681 }
2daf4411
FT		 682 if((fd = listensock6(port)) < 0) {
683 flog(LOG_ERR, "could not listen on IPv6 port (port %i): %s", port, strerror(errno));
684 exit(1);
685 }
6ca53b2e
FT		 686 if(keyfile == NULL)
687 keyfile = crtfile;
688 if((ret = gnutls_certificate_set_x509_key_file(creds, crtfile, keyfile, GNUTLS_X509_FMT_PEM)) != 0) {
689 flog(LOG_ERR, "ssl: could not load certificate or key: %s", gnutls_strerror(ret));
690 exit(1);
691 }
76d6825e
FT		 692 if((ciphers == NULL) && ((ret = gnutls_priority_init(&ciphers, "NORMAL", NULL)) != 0)) {
693 flog(LOG_ERR, "ssl: could not initialize cipher priorities: %s", gnutls_strerror(ret));
694 exit(1);
695 }
7a59f41f
FT		 696 if((ret = gnutls_certificate_get_x509_key(creds, 0, &defkey)) != 0) {
697 flog(LOG_ERR, "ssl: could not get default key: %s", gnutls_strerror(ret));
698 exit(1);
699 }
700 for(i = 0; i < ncertf.d; i++)
701 bufadd(ncreds, readncreds(ncertf.b[i], defkey));
702 for(i = 0; i < ncertd.d; i++)
703 readncdir(&ncreds, ncertd.b[i], defkey);
704 buffree(ncertf);
705 buffree(ncertd);
2daf4411 706 gnutls_certificate_set_dh_params(creds, dhparams());
28b2e619 707 bufadd(ncreds, NULL);
6ca53b2e
FT		 708 omalloc(pd);
709 pd->fd = fd;
710 pd->sport = port;
bcd711f0 711 pd->clreq = clreq;
6ca53b2e 712 pd->creds = creds;
28b2e619 713 pd->ncreds = ncreds.b;
76d6825e 714 pd->ciphers = ciphers;
cac13158 715 bufadd(listeners, mustart(listenloop, pd));
aa06d1b3 716 if((fd = listensock4(port)) < 0) {
6ca53b2e 717 if(errno != EADDRINUSE) {
aa06d1b3 718 flog(LOG_ERR, "could not listen on IPv4 port (port %i): %s", port, strerror(errno));
6ca53b2e
FT		 719 exit(1);
720 }
721 } else {
722 omalloc(pd);
723 pd->fd = fd;
724 pd->sport = port;
725 pd->creds = creds;
76d6825e
FT		 726 pd->ncreds = ncreds.b;
727 pd->ciphers = ciphers;
cac13158 728 bufadd(listeners, mustart(listenloop, pd));
6ca53b2e
FT		 729 }
730}
731
732#endif
A Sane HTTP Daemon