Commit | Line | Data |
---|---|---|
c55a77db PH |
1 | /* A little hacked up program that makes a TCP/IP call and reads a script to |
2 | drive it, for testing Exim server code running as a daemon. It's got a bit | |
3 | messy with the addition of support for either OpenSSL or GnuTLS. The code for | |
2b4a568d JH |
4 | those was hacked out of Exim itself, then code for OpenSSL OCSP stapling was |
5 | ripped from the openssl ocsp and s_client utilities. */ | |
c55a77db PH |
6 | |
7 | /* ANSI C standard includes */ | |
8 | ||
9 | #include <ctype.h> | |
10 | #include <signal.h> | |
11 | #include <stdarg.h> | |
12 | #include <stddef.h> | |
13 | #include <stdio.h> | |
14 | #include <stdlib.h> | |
15 | #include <string.h> | |
16 | #include <time.h> | |
17 | ||
18 | /* Unix includes */ | |
19 | ||
20 | #include <errno.h> | |
21 | #include <dirent.h> | |
22 | #include <sys/types.h> | |
23 | ||
24 | #include <netinet/in_systm.h> | |
25 | #include <netinet/in.h> | |
26 | #include <netinet/ip.h> | |
5ddc9771 | 27 | #include <netinet/tcp.h> |
c55a77db PH |
28 | |
29 | #include <netdb.h> | |
30 | #include <arpa/inet.h> | |
31 | #include <sys/time.h> | |
32 | #include <sys/resource.h> | |
33 | #include <sys/socket.h> | |
34 | #include <sys/stat.h> | |
35 | #include <fcntl.h> | |
36 | #include <unistd.h> | |
37 | #include <utime.h> | |
38 | ||
39 | #ifdef AF_INET6 | |
40 | #define HAVE_IPV6 1 | |
41 | #endif | |
42 | ||
43 | #ifndef S_ADDR_TYPE | |
44 | #define S_ADDR_TYPE u_long | |
45 | #endif | |
46 | ||
47 | typedef unsigned char uschar; | |
48 | ||
49 | #define CS (char *) | |
50 | #define US (unsigned char *) | |
51 | ||
52 | #define FALSE 0 | |
53 | #define TRUE 1 | |
54 | ||
55 | ||
56 | ||
57 | static int sigalrm_seen = 0; | |
58 | ||
59 | ||
60 | /* TLS support can be optionally included, either for OpenSSL or GnuTLS. The | |
61 | latter needs a whole pile of tables. */ | |
c55a77db | 62 | #ifdef HAVE_OPENSSL |
348051ad JH |
63 | # define HAVE_TLS |
64 | # include <openssl/crypto.h> | |
65 | # include <openssl/x509.h> | |
66 | # include <openssl/pem.h> | |
67 | # include <openssl/ssl.h> | |
68 | # include <openssl/err.h> | |
69 | # include <openssl/rand.h> | |
839a3b0d JH |
70 | |
71 | # if OPENSSL_VERSION_NUMBER < 0x0090806fL && !defined(DISABLE_OCSP) && !defined(OPENSSL_NO_TLSEXT) | |
eca4debb TL |
72 | # warning "OpenSSL library version too old; define DISABLE_OCSP in Makefile" |
73 | # define DISABLE_OCSP | |
74 | # endif | |
6d68e1c7 TL |
75 | # ifndef DISABLE_OCSP |
76 | # include <openssl/ocsp.h> | |
77 | # endif | |
c55a77db PH |
78 | #endif |
79 | ||
80 | ||
81 | #ifdef HAVE_GNUTLS | |
348051ad JH |
82 | # define HAVE_TLS |
83 | # include <gnutls/gnutls.h> | |
84 | # include <gnutls/x509.h> | |
85 | # if GNUTLS_VERSION_NUMBER >= 0x030103 | |
86 | # define HAVE_OCSP | |
87 | # include <gnutls/ocsp.h> | |
5597be31 JH |
88 | # endif |
89 | # ifndef GNUTLS_NO_EXTENSIONS | |
90 | # define GNUTLS_NO_EXTENSIONS 0 | |
348051ad | 91 | # endif |
c55a77db | 92 | |
348051ad | 93 | # define DH_BITS 768 |
c55a77db PH |
94 | |
95 | /* Local static variables for GNUTLS */ | |
96 | ||
fc4fcc34 | 97 | static gnutls_dh_params_t dh_params = NULL; |
c55a77db PH |
98 | |
99 | static gnutls_certificate_credentials_t x509_cred = NULL; | |
fc4fcc34 | 100 | static gnutls_session_t tls_session = NULL; |
c55a77db PH |
101 | |
102 | static int ssl_session_timeout = 200; | |
103 | ||
104 | /* Priorities for TLS algorithms to use. */ | |
105 | ||
ba86e143 | 106 | # if GNUTLS_VERSION_NUMBER < 0x030400 |
c55a77db PH |
107 | static const int protocol_priority[16] = { GNUTLS_TLS1, GNUTLS_SSL3, 0 }; |
108 | ||
109 | static const int kx_priority[16] = { | |
110 | GNUTLS_KX_RSA, | |
111 | GNUTLS_KX_DHE_DSS, | |
112 | GNUTLS_KX_DHE_RSA, | |
c55a77db PH |
113 | 0 }; |
114 | ||
115 | static int default_cipher_priority[16] = { | |
116 | GNUTLS_CIPHER_AES_256_CBC, | |
117 | GNUTLS_CIPHER_AES_128_CBC, | |
118 | GNUTLS_CIPHER_3DES_CBC, | |
119 | GNUTLS_CIPHER_ARCFOUR_128, | |
120 | 0 }; | |
121 | ||
122 | static const int mac_priority[16] = { | |
123 | GNUTLS_MAC_SHA, | |
124 | GNUTLS_MAC_MD5, | |
125 | 0 }; | |
126 | ||
127 | static const int comp_priority[16] = { GNUTLS_COMP_NULL, 0 }; | |
ba86e143 | 128 | # endif |
c55a77db | 129 | |
348051ad | 130 | #endif /*HAVE_GNUTLS*/ |
c55a77db PH |
131 | |
132 | ||
133 | ||
2b4a568d JH |
134 | #ifdef HAVE_TLS |
135 | char * ocsp_stapling = NULL; | |
ba86e143 | 136 | char * pri_string = NULL; |
2b4a568d JH |
137 | #endif |
138 | ||
c55a77db PH |
139 | |
140 | /************************************************* | |
141 | * SIGALRM handler - crash out * | |
142 | *************************************************/ | |
143 | ||
144 | static void | |
145 | sigalrm_handler_crash(int sig) | |
146 | { | |
147 | sig = sig; /* Keep picky compilers happy */ | |
148 | printf("\nClient timed out\n"); | |
149 | exit(99); | |
150 | } | |
151 | ||
152 | ||
153 | /************************************************* | |
154 | * SIGALRM handler - set flag * | |
155 | *************************************************/ | |
156 | ||
157 | static void | |
158 | sigalrm_handler_flag(int sig) | |
159 | { | |
160 | sig = sig; /* Keep picky compilers happy */ | |
161 | sigalrm_seen = 1; | |
162 | } | |
163 | ||
164 | ||
165 | ||
166 | /****************************************************************************/ | |
167 | /****************************************************************************/ | |
168 | ||
169 | #ifdef HAVE_OPENSSL | |
3b3634d0 | 170 | # ifndef DISABLE_OCSP |
f5d78688 | 171 | |
ee5b1e28 | 172 | static STACK_OF(X509) * |
3b3634d0 | 173 | chain_from_pem_file(const uschar * file) |
ee5b1e28 | 174 | { |
3b3634d0 JH |
175 | BIO * bp; |
176 | X509 * x; | |
177 | STACK_OF(X509) * sk; | |
ee5b1e28 | 178 | |
3b3634d0 JH |
179 | if (!(sk = sk_X509_new_null())) return NULL; |
180 | if (!(bp = BIO_new_file(CS file, "r"))) return NULL; | |
181 | while ((x = PEM_read_bio_X509(bp, NULL, 0, NULL))) | |
182 | sk_X509_push(sk, x); | |
183 | BIO_free(bp); | |
ee5b1e28 JH |
184 | return sk; |
185 | } | |
186 | ||
3b3634d0 JH |
187 | |
188 | ||
ee5b1e28 JH |
189 | static void |
190 | cert_stack_free(STACK_OF(X509) * sk) | |
191 | { | |
192 | while (sk_X509_num(sk) > 0) (void) sk_X509_pop(sk); | |
193 | sk_X509_free(sk); | |
194 | } | |
195 | ||
196 | ||
f5d78688 JH |
197 | static int |
198 | tls_client_stapling_cb(SSL *s, void *arg) | |
199 | { | |
200 | const unsigned char *p; | |
201 | int len; | |
202 | OCSP_RESPONSE *rsp; | |
203 | OCSP_BASICRESP *bs; | |
ee5b1e28 | 204 | STACK_OF(X509) * sk; |
f5d78688 JH |
205 | int ret = 1; |
206 | ||
207 | len = SSL_get_tlsext_status_ocsp_resp(s, &p); | |
208 | /*BIO_printf(arg, "OCSP response: ");*/ | |
209 | if (!p) | |
210 | { | |
211 | BIO_printf(arg, "no response received\n"); | |
212 | return 1; | |
213 | } | |
214 | if(!(rsp = d2i_OCSP_RESPONSE(NULL, &p, len))) | |
215 | { | |
216 | BIO_printf(arg, "response parse error\n"); | |
217 | BIO_dump_indent(arg, (char *)p, len, 4); | |
218 | return 0; | |
219 | } | |
220 | if(!(bs = OCSP_response_get1_basic(rsp))) | |
221 | { | |
222 | BIO_printf(arg, "error parsing response\n"); | |
223 | return 0; | |
224 | } | |
225 | ||
ee5b1e28 | 226 | |
f1a49684 | 227 | if (!(sk = chain_from_pem_file((const uschar *)ocsp_stapling))) |
f5d78688 JH |
228 | { |
229 | BIO_printf(arg, "error in cert setup\n"); | |
230 | return 0; | |
231 | } | |
232 | ||
ee5b1e28 JH |
233 | /* OCSP_basic_verify takes a "store" arg, but does not |
234 | use it for the chain verification, which is all we do | |
235 | when OCSP_NOVERIFY is set. The content from the wire | |
236 | (in "bs") and a cert-stack "sk" are all that is used. */ | |
237 | ||
238 | if(OCSP_basic_verify(bs, sk, NULL, OCSP_NOVERIFY) <= 0) | |
f5d78688 JH |
239 | { |
240 | BIO_printf(arg, "Response Verify Failure\n"); | |
241 | ERR_print_errors(arg); | |
242 | ret = 0; | |
243 | } | |
244 | else | |
245 | BIO_printf(arg, "Response verify OK\n"); | |
246 | ||
ee5b1e28 | 247 | cert_stack_free(sk); |
f5d78688 JH |
248 | return ret; |
249 | } | |
3b3634d0 | 250 | # endif /*DISABLE_OCSP*/ |
f5d78688 JH |
251 | |
252 | ||
c55a77db PH |
253 | /************************************************* |
254 | * Start an OpenSSL TLS session * | |
255 | *************************************************/ | |
256 | ||
2b4a568d JH |
257 | int |
258 | tls_start(int sock, SSL **ssl, SSL_CTX *ctx) | |
c55a77db PH |
259 | { |
260 | int rc; | |
57cde6e4 | 261 | static const unsigned char *sid_ctx = US"exim"; |
c55a77db PH |
262 | |
263 | RAND_load_file("client.c", -1); /* Not *very* random! */ | |
264 | ||
265 | *ssl = SSL_new (ctx); | |
57cde6e4 | 266 | SSL_set_session_id_context(*ssl, sid_ctx, strlen(CS sid_ctx)); |
c55a77db PH |
267 | SSL_set_fd (*ssl, sock); |
268 | SSL_set_connect_state(*ssl); | |
269 | ||
6d68e1c7 | 270 | #ifndef DISABLE_OCSP |
f5d78688 JH |
271 | if (ocsp_stapling) |
272 | { | |
273 | SSL_CTX_set_tlsext_status_cb(ctx, tls_client_stapling_cb); | |
274 | SSL_CTX_set_tlsext_status_arg(ctx, BIO_new_fp(stdout, BIO_NOCLOSE)); | |
275 | SSL_set_tlsext_status_type(*ssl, TLSEXT_STATUSTYPE_ocsp); | |
276 | } | |
6d68e1c7 | 277 | #endif |
f5d78688 | 278 | |
c55a77db PH |
279 | signal(SIGALRM, sigalrm_handler_flag); |
280 | sigalrm_seen = 0; | |
281 | alarm(5); | |
282 | rc = SSL_connect (*ssl); | |
283 | alarm(0); | |
284 | ||
285 | if (sigalrm_seen) | |
286 | { | |
287 | printf("SSL_connect timed out\n"); | |
288 | return 0; | |
289 | } | |
290 | ||
291 | if (rc <= 0) | |
292 | { | |
293 | ERR_print_errors_fp(stdout); | |
294 | return 0; | |
295 | } | |
296 | ||
297 | printf("SSL connection using %s\n", SSL_get_cipher (*ssl)); | |
298 | return 1; | |
299 | } | |
300 | ||
301 | ||
302 | /************************************************* | |
303 | * SSL Information callback * | |
304 | *************************************************/ | |
305 | ||
306 | static void | |
307 | info_callback(SSL *s, int where, int ret) | |
308 | { | |
309 | where = where; | |
310 | ret = ret; | |
311 | printf("SSL info: %s\n", SSL_state_string_long(s)); | |
312 | } | |
313 | #endif | |
314 | ||
315 | ||
316 | /****************************************************************************/ | |
317 | /****************************************************************************/ | |
318 | ||
319 | ||
320 | #ifdef HAVE_GNUTLS | |
321 | /************************************************* | |
322 | * Handle GnuTLS error * | |
323 | *************************************************/ | |
324 | ||
325 | /* Called from lots of places when errors occur before actually starting to do | |
326 | the TLS handshake, that is, while the session is still in clear. | |
327 | ||
328 | Argument: | |
329 | prefix prefix text | |
330 | err a GnuTLS error number, or 0 if local error | |
331 | ||
332 | Returns: doesn't - it dies | |
333 | */ | |
334 | ||
335 | static void | |
336 | gnutls_error(uschar *prefix, int err) | |
337 | { | |
bb727765 | 338 | fprintf(stderr, "GnuTLS connection error: %s:", prefix); |
c55a77db PH |
339 | if (err != 0) fprintf(stderr, " %s", gnutls_strerror(err)); |
340 | fprintf(stderr, "\n"); | |
9ff403f8 | 341 | exit(98); |
c55a77db PH |
342 | } |
343 | ||
344 | ||
345 | ||
346 | /************************************************* | |
bb727765 | 347 | * Setup up DH parameters * |
c55a77db PH |
348 | *************************************************/ |
349 | ||
350 | /* For the test suite, the parameters should always be available in the spool | |
351 | directory. */ | |
352 | ||
353 | static void | |
bb727765 | 354 | init_dh(void) |
c55a77db PH |
355 | { |
356 | int fd; | |
357 | int ret; | |
fc4fcc34 | 358 | gnutls_datum_t m; |
c55a77db PH |
359 | uschar filename[200]; |
360 | struct stat statbuf; | |
361 | ||
362 | /* Initialize the data structures for holding the parameters */ | |
363 | ||
c55a77db PH |
364 | ret = gnutls_dh_params_init(&dh_params); |
365 | if (ret < 0) gnutls_error(US"init dh_params", ret); | |
366 | ||
367 | /* Open the cache file for reading and if successful, read it and set up the | |
bb727765 | 368 | parameters. */ |
c55a77db PH |
369 | |
370 | fd = open("aux-fixed/gnutls-params", O_RDONLY, 0); | |
371 | if (fd < 0) | |
372 | { | |
373 | fprintf(stderr, "Failed to open spool/gnutls-params: %s\n", strerror(errno)); | |
9ff403f8 | 374 | exit(97); |
c55a77db PH |
375 | } |
376 | ||
377 | if (fstat(fd, &statbuf) < 0) | |
378 | { | |
379 | (void)close(fd); | |
380 | return gnutls_error(US"TLS cache stat failed", 0); | |
381 | } | |
382 | ||
383 | m.size = statbuf.st_size; | |
384 | m.data = malloc(m.size); | |
385 | if (m.data == NULL) | |
386 | return gnutls_error(US"memory allocation failed", 0); | |
387 | if (read(fd, m.data, m.size) != m.size) | |
388 | return gnutls_error(US"TLS cache read failed", 0); | |
389 | (void)close(fd); | |
390 | ||
c55a77db PH |
391 | ret = gnutls_dh_params_import_pkcs3(dh_params, &m, GNUTLS_X509_FMT_PEM); |
392 | if (ret < 0) return gnutls_error(US"DH params import", ret); | |
393 | free(m.data); | |
394 | } | |
395 | ||
396 | ||
397 | ||
398 | ||
399 | /************************************************* | |
400 | * Initialize for GnuTLS * | |
401 | *************************************************/ | |
402 | ||
403 | /* | |
404 | Arguments: | |
405 | certificate certificate file | |
406 | privatekey private key file | |
407 | */ | |
408 | ||
409 | static void | |
410 | tls_init(uschar *certificate, uschar *privatekey) | |
411 | { | |
412 | int rc; | |
413 | ||
414 | rc = gnutls_global_init(); | |
415 | if (rc < 0) gnutls_error(US"gnutls_global_init", rc); | |
416 | ||
bb727765 | 417 | /* Read D-H parameters from the cache file. */ |
c55a77db | 418 | |
bb727765 | 419 | init_dh(); |
c55a77db PH |
420 | |
421 | /* Create the credentials structure */ | |
422 | ||
423 | rc = gnutls_certificate_allocate_credentials(&x509_cred); | |
424 | if (rc < 0) gnutls_error(US"certificate_allocate_credentials", rc); | |
425 | ||
426 | /* Set the certificate and private keys */ | |
427 | ||
428 | if (certificate != NULL) | |
429 | { | |
430 | rc = gnutls_certificate_set_x509_key_file(x509_cred, CS certificate, | |
431 | CS privatekey, GNUTLS_X509_FMT_PEM); | |
059f2ace | 432 | if (rc < 0) gnutls_error(US"gnutls_certificate", rc); |
c55a77db PH |
433 | } |
434 | ||
435 | /* Associate the parameters with the x509 credentials structure. */ | |
436 | ||
437 | gnutls_certificate_set_dh_params(x509_cred, dh_params); | |
2b4a568d JH |
438 | |
439 | /* set the CA info for server-cert verify */ | |
440 | if (ocsp_stapling) | |
441 | gnutls_certificate_set_x509_trust_file(x509_cred, ocsp_stapling, | |
442 | GNUTLS_X509_FMT_PEM); | |
c55a77db PH |
443 | } |
444 | ||
445 | ||
446 | ||
447 | /************************************************* | |
448 | * Initialize a single GNUTLS session * | |
449 | *************************************************/ | |
450 | ||
fc4fcc34 | 451 | static gnutls_session_t |
c55a77db PH |
452 | tls_session_init(void) |
453 | { | |
fc4fcc34 | 454 | gnutls_session_t session; |
c55a77db | 455 | |
0886a95e | 456 | gnutls_init(&session, GNUTLS_CLIENT | GNUTLS_NO_EXTENSIONS); |
c55a77db | 457 | |
ba86e143 | 458 | # if GNUTLS_VERSION_NUMBER < 0x030400 |
c55a77db PH |
459 | gnutls_cipher_set_priority(session, default_cipher_priority); |
460 | gnutls_compression_set_priority(session, comp_priority); | |
461 | gnutls_kx_set_priority(session, kx_priority); | |
462 | gnutls_protocol_set_priority(session, protocol_priority); | |
463 | gnutls_mac_set_priority(session, mac_priority); | |
464 | ||
465 | gnutls_cred_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred); | |
ba86e143 JH |
466 | # else |
467 | if (pri_string) | |
468 | { | |
469 | gnutls_priority_t priority_cache; | |
470 | const char * errpos; | |
471 | ||
472 | gnutls_priority_init(&priority_cache, pri_string, &errpos); | |
473 | gnutls_priority_set(session, priority_cache); | |
474 | } | |
475 | else | |
476 | gnutls_set_default_priority(session); | |
fc4fcc34 | 477 | gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred); |
ba86e143 | 478 | # endif |
c55a77db PH |
479 | |
480 | gnutls_dh_set_prime_bits(session, DH_BITS); | |
481 | gnutls_db_set_cache_expiration(session, ssl_session_timeout); | |
482 | ||
483 | return session; | |
484 | } | |
485 | #endif | |
486 | ||
487 | ||
488 | /****************************************************************************/ | |
5d036699 JH |
489 | /* Turn "\n" and "\r" into the relevant characters. This is a hack. */ |
490 | ||
491 | static int | |
492 | unescape_buf(unsigned char * buf, int len) | |
493 | { | |
494 | unsigned char * s; | |
495 | unsigned char c, t; | |
496 | unsigned shift; | |
497 | ||
498 | for (s = buf; s < buf+len; s++) if (*s == '\\') | |
499 | { | |
500 | switch (s[1]) | |
501 | { | |
502 | default: c = s[1]; shift = 1; break; | |
503 | case 'n': c = '\n'; shift = 1; break; | |
504 | case 'r': c = '\r'; shift = 1; break; | |
505 | case 'x': | |
506 | t = s[2]; | |
507 | if (t >= 'A' && t <= 'F') t -= 'A'-'9'-1; | |
508 | else if (t >= 'a' && t <= 'f') t -= 'a'-'9'-1; | |
509 | t -= '0'; | |
510 | c = (t<<4) & 0xf0; | |
511 | t = s[3]; | |
512 | if (t >= 'A' && t <= 'F') t -= 'A'-'9'-1; | |
513 | else if (t >= 'a' && t <= 'f') t -= 'a'-'9'-1; | |
514 | t -= '0'; | |
515 | c |= t & 0xf; | |
516 | shift = 3; | |
517 | break; | |
518 | } | |
519 | *s = c; | |
520 | memmove(s+1, s+shift+1, len-shift); | |
521 | len -= shift; | |
522 | } | |
523 | return len; | |
524 | } | |
525 | ||
526 | ||
c55a77db | 527 | /****************************************************************************/ |
7bbb3621 JH |
528 | typedef struct { |
529 | int sock; | |
530 | int tls_active; | |
531 | #ifdef HAVE_OPENSSL | |
532 | SSL_CTX * ctx; | |
533 | SSL * ssl; | |
534 | #endif | |
535 | int sent_starttls; | |
536 | } srv_ctx; | |
537 | ||
538 | static void | |
539 | do_file(srv_ctx * srv, FILE * f, int timeout, | |
540 | unsigned char * inbuffer, unsigned bsiz, unsigned char * inptr) | |
541 | { | |
b9df1829 | 542 | unsigned char outbuffer[1024 * 20]; |
7bbb3621 JH |
543 | |
544 | while (fgets(CS outbuffer, sizeof(outbuffer), f) != NULL) | |
545 | { | |
546 | int n = (int)strlen(CS outbuffer); | |
547 | int crlf = 1; | |
548 | int rc; | |
549 | ||
550 | /* Strip trailing newline */ | |
551 | if (outbuffer[n-1] == '\n') outbuffer[--n] = 0; | |
552 | ||
553 | /* Expect incoming */ | |
554 | ||
555 | if ( strncmp(CS outbuffer, "???", 3) == 0 | |
ce80533b | 556 | && (outbuffer[3] == ' ' || outbuffer[3] == '*' || outbuffer[3] == '?') |
7bbb3621 JH |
557 | ) |
558 | { | |
559 | unsigned char *lineptr; | |
560 | unsigned exp_eof = outbuffer[3] == '*'; | |
ce80533b | 561 | unsigned resp_optional = outbuffer[3] == '?'; |
7bbb3621 JH |
562 | |
563 | printf("%s\n", outbuffer); | |
564 | n = unescape_buf(outbuffer, n); | |
565 | ||
ce80533b | 566 | nextinput: |
7bbb3621 JH |
567 | if (*inptr == 0) /* Refill input buffer */ |
568 | { | |
ce80533b | 569 | alarm(timeout); |
7bbb3621 JH |
570 | if (srv->tls_active) |
571 | { | |
5dcadbf4 JH |
572 | #ifdef HAVE_OPENSSL |
573 | int error; | |
ce80533b | 574 | rc = SSL_read(srv->ssl, inbuffer, bsiz - 1); |
5dcadbf4 JH |
575 | if (rc <= 0) |
576 | switch (error = SSL_get_error(srv->ssl, rc)) | |
577 | { | |
578 | case SSL_ERROR_ZERO_RETURN: | |
579 | break; | |
580 | case SSL_ERROR_SYSCALL: | |
fd3cf789 | 581 | printf("%s\n", ERR_error_string(ERR_get_error(), NULL)); |
5dcadbf4 | 582 | rc = -1; |
fd3cf789 | 583 | break; |
5dcadbf4 | 584 | case SSL_ERROR_SSL: |
fd3cf789 | 585 | printf("%s\nTLS terminated\n", ERR_error_string(ERR_get_error(), NULL)); |
5dcadbf4 JH |
586 | SSL_shutdown(srv->ssl); |
587 | SSL_free(srv->ssl); | |
588 | srv->tls_active = FALSE; | |
fd3cf789 JH |
589 | { /* OpenSSL leaves it in restartsys mode */ |
590 | struct sigaction act = {.sa_handler = sigalrm_handler_flag, .sa_flags = 0}; | |
591 | sigalrm_seen = 1; | |
592 | sigaction(SIGALRM, &act, NULL); | |
593 | } | |
594 | *inptr = 0; | |
5dcadbf4 JH |
595 | goto nextinput; |
596 | default: | |
597 | printf("SSL error code %d\n", error); | |
598 | } | |
5dcadbf4 JH |
599 | #endif |
600 | #ifdef HAVE_GNUTLS | |
7bbb3621 | 601 | rc = gnutls_record_recv(tls_session, CS inbuffer, bsiz - 1); |
5dcadbf4 | 602 | #endif |
7bbb3621 JH |
603 | } |
604 | else | |
7bbb3621 | 605 | rc = read(srv->sock, inbuffer, bsiz); |
ce80533b | 606 | alarm(0); |
7bbb3621 JH |
607 | |
608 | if (rc < 0) | |
609 | { | |
fd3cf789 JH |
610 | if (errno == EINTR && sigalrm_seen && resp_optional) |
611 | continue; /* next scriptline */ | |
7bbb3621 JH |
612 | printf("Read error %s\n", strerror(errno)); |
613 | exit(81); | |
614 | } | |
615 | else if (rc == 0) | |
616 | if (exp_eof) | |
617 | { | |
618 | printf("Expected EOF read\n"); | |
619 | continue; | |
620 | } | |
5dcadbf4 JH |
621 | else if (resp_optional) |
622 | continue; /* next scriptline */ | |
7bbb3621 JH |
623 | else |
624 | { | |
625 | printf("Unexpected EOF read\n"); | |
626 | close(srv->sock); | |
627 | exit(80); | |
628 | } | |
629 | else if (exp_eof) | |
630 | { | |
631 | printf("Expected EOF not read\n"); | |
632 | close(srv->sock); | |
633 | exit(74); | |
634 | } | |
635 | else | |
636 | { | |
637 | inbuffer[rc] = 0; | |
638 | inptr = inbuffer; | |
639 | } | |
640 | } | |
641 | ||
642 | lineptr = inptr; | |
643 | while (*inptr != 0 && *inptr != '\r' && *inptr != '\n') inptr++; | |
644 | if (*inptr != 0) | |
645 | { | |
646 | *inptr++ = 0; | |
647 | if (*inptr == '\n') inptr++; | |
648 | } | |
649 | ||
7bbb3621 | 650 | if (strncmp(CS lineptr, CS outbuffer + 4, n - 4) != 0) |
ce80533b JH |
651 | if (resp_optional) |
652 | { | |
653 | inptr = lineptr; /* consume scriptline, not inputline */ | |
654 | continue; | |
655 | } | |
656 | else | |
657 | { | |
658 | printf("<<< %s\n", lineptr); | |
659 | printf("\n******** Input mismatch ********\n"); | |
660 | exit(79); | |
661 | } | |
662 | ||
663 | /* input matched script */ | |
664 | ||
665 | if (resp_optional) | |
666 | goto nextinput; /* consume inputline, not scriptline */ | |
667 | ||
668 | printf("<<< %s\n", lineptr); | |
7bbb3621 JH |
669 | |
670 | #ifdef HAVE_TLS | |
671 | if (srv->sent_starttls) | |
672 | { | |
673 | if (lineptr[0] == '2') | |
674 | { | |
7bbb3621 JH |
675 | unsigned int verify; |
676 | ||
677 | printf("Attempting to start TLS\n"); | |
678 | fflush(stdout); | |
679 | ||
680 | #ifdef HAVE_OPENSSL | |
681 | srv->tls_active = tls_start(srv->sock, &srv->ssl, srv->ctx); | |
682 | #endif | |
683 | ||
684 | #ifdef HAVE_GNUTLS | |
685 | { | |
686 | int rc; | |
687 | sigalrm_seen = FALSE; | |
688 | alarm(timeout); | |
689 | do { | |
690 | rc = gnutls_handshake(tls_session); | |
691 | } while (rc < 0 && gnutls_error_is_fatal(rc) == 0); | |
692 | srv->tls_active = rc >= 0; | |
693 | alarm(0); | |
694 | ||
695 | if (!srv->tls_active) printf("%s\n", gnutls_strerror(rc)); | |
696 | } | |
697 | #endif | |
698 | ||
699 | if (!srv->tls_active) | |
700 | { | |
701 | printf("Failed to start TLS\n"); | |
702 | fflush(stdout); | |
703 | } | |
704 | #ifdef HAVE_GNUTLS | |
705 | else if (ocsp_stapling) | |
706 | { | |
707 | if ((rc= gnutls_certificate_verify_peers2(tls_session, &verify)) < 0) | |
708 | { | |
709 | printf("Failed to verify certificate: %s\n", gnutls_strerror(rc)); | |
710 | fflush(stdout); | |
711 | } | |
712 | else if (verify & (GNUTLS_CERT_INVALID|GNUTLS_CERT_REVOKED)) | |
713 | { | |
714 | printf("Bad certificate\n"); | |
715 | fflush(stdout); | |
716 | } | |
717 | #ifdef HAVE_OCSP | |
718 | else if (gnutls_ocsp_status_request_is_checked(tls_session, 0) == 0) | |
719 | { | |
720 | printf("Failed to verify certificate status\n"); | |
721 | { | |
722 | gnutls_datum_t stapling; | |
723 | gnutls_ocsp_resp_t resp; | |
724 | gnutls_datum_t printed; | |
725 | if ( (rc= gnutls_ocsp_status_request_get(tls_session, &stapling)) == 0 | |
726 | && (rc= gnutls_ocsp_resp_init(&resp)) == 0 | |
727 | && (rc= gnutls_ocsp_resp_import(resp, &stapling)) == 0 | |
728 | && (rc= gnutls_ocsp_resp_print(resp, GNUTLS_OCSP_PRINT_FULL, &printed)) == 0 | |
729 | ) | |
730 | { | |
731 | fprintf(stderr, "%.4096s", printed.data); | |
732 | gnutls_free(printed.data); | |
733 | } | |
734 | else | |
735 | (void) fprintf(stderr,"ocsp decode: %s", gnutls_strerror(rc)); | |
736 | } | |
737 | fflush(stdout); | |
738 | } | |
739 | #endif | |
740 | } | |
741 | #endif | |
742 | else | |
743 | printf("Succeeded in starting TLS\n"); | |
744 | } | |
745 | else printf("Abandoning TLS start attempt\n"); | |
746 | } | |
747 | srv->sent_starttls = 0; | |
748 | #endif | |
749 | } | |
750 | ||
751 | /* Wait for a bit before proceeding */ | |
752 | ||
753 | else if (strncmp(CS outbuffer, "+++ ", 4) == 0) | |
754 | { | |
755 | printf("%s\n", outbuffer); | |
756 | sleep(atoi(CS outbuffer + 4)); | |
757 | } | |
758 | ||
759 | /* Stack new input file */ | |
760 | ||
761 | else if (strncmp(CS outbuffer, "<<< ", 4) == 0) | |
762 | { | |
763 | FILE * new_f; | |
f1a49684 | 764 | if (!(new_f = fopen((const char *)outbuffer+4 , "r"))) |
7bbb3621 | 765 | { |
768e8b5b | 766 | printf("Unable to open '%s': %s", inptr, strerror(errno)); |
7bbb3621 JH |
767 | exit(74); |
768 | } | |
769 | do_file(srv, new_f, timeout, inbuffer, bsiz, inptr); | |
770 | } | |
771 | ||
772 | ||
773 | /* Send line outgoing, but barf if unconsumed incoming */ | |
774 | ||
775 | else | |
776 | { | |
777 | unsigned char * out = outbuffer; | |
778 | ||
779 | if (strncmp(CS outbuffer, ">>> ", 4) == 0) | |
780 | { | |
781 | crlf = 0; | |
782 | out += 4; | |
783 | n -= 4; | |
784 | } | |
785 | ||
786 | if (*inptr != 0) | |
787 | { | |
788 | printf("Unconsumed input: %s", inptr); | |
789 | printf(" About to send: %s\n", out); | |
790 | exit(78); | |
791 | } | |
792 | ||
793 | #ifdef HAVE_TLS | |
794 | ||
795 | /* Shutdown TLS */ | |
796 | ||
797 | if (strcmp(CS out, "stoptls") == 0 || | |
798 | strcmp(CS out, "STOPTLS") == 0) | |
799 | { | |
800 | if (!srv->tls_active) | |
801 | { | |
802 | printf("STOPTLS read when TLS not active\n"); | |
803 | exit(77); | |
804 | } | |
805 | printf("Shutting down TLS encryption\n"); | |
806 | ||
807 | #ifdef HAVE_OPENSSL | |
808 | SSL_shutdown(srv->ssl); | |
809 | SSL_free(srv->ssl); | |
810 | #endif | |
811 | ||
812 | #ifdef HAVE_GNUTLS | |
813 | gnutls_bye(tls_session, GNUTLS_SHUT_WR); | |
814 | gnutls_deinit(tls_session); | |
815 | tls_session = NULL; | |
816 | gnutls_global_deinit(); | |
817 | #endif | |
818 | ||
819 | srv->tls_active = 0; | |
820 | continue; | |
821 | } | |
822 | ||
823 | /* Remember that we sent STARTTLS */ | |
824 | ||
825 | srv->sent_starttls = (strcmp(CS out, "starttls") == 0 || | |
826 | strcmp(CS out, "STARTTLS") == 0); | |
827 | ||
828 | /* Fudge: if the command is "starttls_wait", we send the starttls bit, | |
829 | but we haven't set the flag, so that there is no negotiation. This is for | |
830 | testing the server's timeout. */ | |
831 | ||
832 | if (strcmp(CS out, "starttls_wait") == 0) | |
833 | { | |
834 | out[8] = 0; | |
835 | n = 8; | |
836 | } | |
837 | #endif | |
838 | ||
839 | printf(">>> %s\n", out); | |
840 | if (crlf) | |
841 | { | |
842 | strcpy(CS out + n, "\r\n"); | |
843 | n += 2; | |
844 | } | |
845 | ||
846 | n = unescape_buf(out, n); | |
847 | ||
848 | /* OK, do it */ | |
849 | ||
850 | alarm(timeout); | |
851 | if (srv->tls_active) | |
852 | { | |
853 | #ifdef HAVE_OPENSSL | |
854 | rc = SSL_write (srv->ssl, out, n); | |
855 | #endif | |
856 | #ifdef HAVE_GNUTLS | |
857 | if ((rc = gnutls_record_send(tls_session, CS out, n)) < 0) | |
858 | { | |
859 | printf("GnuTLS write error: %s\n", gnutls_strerror(rc)); | |
860 | exit(76); | |
861 | } | |
862 | #endif | |
863 | } | |
864 | else | |
865 | rc = write(srv->sock, out, n); | |
866 | alarm(0); | |
867 | ||
868 | if (rc < 0) | |
869 | { | |
870 | printf("Write error: %s\n", strerror(errno)); | |
871 | exit(75); | |
872 | } | |
873 | } | |
874 | } | |
875 | } | |
c55a77db PH |
876 | |
877 | ||
878 | ||
879 | ||
880 | /************************************************* | |
881 | * Main Program * | |
882 | *************************************************/ | |
883 | ||
4fe99a6c | 884 | const char * const HELP_MESSAGE = "\n\ |
972e83f5 HSHR |
885 | Usage: client\n" |
886 | #ifdef HAVE_TLS | |
887 | "\ | |
888 | [-tls-on-connect]\n\ | |
889 | [-ocsp]\n" | |
ba86e143 JH |
890 | # ifdef HAVE_GNUTLS |
891 | "\ | |
892 | [-p priority-string]\n" | |
893 | # endif | |
972e83f5 HSHR |
894 | #endif |
895 | "\ | |
896 | [-tn] n seconds timeout\n\ | |
4fe99a6c PP |
897 | <IP address>\n\ |
898 | <port>\n\ | |
899 | [<outgoing interface>]\n\ | |
900 | [<cert file>]\n\ | |
901 | [<key file>]\n\ | |
902 | \n"; | |
c55a77db | 903 | |
5d036699 JH |
904 | int |
905 | main(int argc, char **argv) | |
c55a77db PH |
906 | { |
907 | struct sockaddr *s_ptr; | |
908 | struct sockaddr_in s_in4; | |
909 | char *interface = NULL; | |
910 | char *address = NULL; | |
911 | char *certfile = NULL; | |
912 | char *keyfile = NULL; | |
1ec3f27d | 913 | char *end = NULL; |
c55a77db | 914 | int argi = 1; |
7bbb3621 | 915 | int host_af, port, s_len, rc, save_errno; |
d528a389 | 916 | int timeout = 5; |
c55a77db | 917 | int tls_on_connect = 0; |
1ec3f27d | 918 | long tmplong; |
c55a77db PH |
919 | |
920 | #if HAVE_IPV6 | |
921 | struct sockaddr_in6 s_in6; | |
922 | #endif | |
923 | ||
7bbb3621 | 924 | srv_ctx srv; |
c55a77db | 925 | |
c55a77db PH |
926 | unsigned char inbuffer[10240]; |
927 | unsigned char *inptr = inbuffer; | |
928 | ||
929 | *inptr = 0; /* Buffer empty */ | |
7bbb3621 JH |
930 | srv.tls_active = 0; |
931 | srv.sent_starttls = 0; | |
c55a77db PH |
932 | |
933 | /* Options */ | |
934 | ||
935 | while (argc >= argi + 1 && argv[argi][0] == '-') | |
936 | { | |
4fe99a6c PP |
937 | if (strcmp(argv[argi], "-help") == 0 || |
938 | strcmp(argv[argi], "--help") == 0 || | |
939 | strcmp(argv[argi], "-h") == 0) | |
940 | { | |
dd4c8678 | 941 | puts(HELP_MESSAGE); |
4fe99a6c PP |
942 | exit(0); |
943 | } | |
c55a77db PH |
944 | if (strcmp(argv[argi], "-tls-on-connect") == 0) |
945 | { | |
946 | tls_on_connect = 1; | |
947 | argi++; | |
948 | } | |
2b4a568d | 949 | #ifdef HAVE_TLS |
f5d78688 JH |
950 | else if (strcmp(argv[argi], "-ocsp") == 0) |
951 | { | |
952 | if (argc < ++argi + 1) | |
953 | { | |
954 | fprintf(stderr, "Missing required certificate file for ocsp option\n"); | |
9ff403f8 | 955 | exit(96); |
f5d78688 JH |
956 | } |
957 | ocsp_stapling = argv[argi++]; | |
958 | } | |
ba86e143 JH |
959 | # ifdef HAVE_GNUTLS |
960 | else if (strcmp(argv[argi], "-p") == 0) | |
961 | { | |
962 | if (argc < ++argi + 1) | |
963 | { | |
964 | fprintf(stderr, "Missing priority string\n"); | |
965 | exit(96); | |
966 | } | |
967 | pri_string = argv[argi++]; | |
968 | } | |
969 | #endif | |
2b4a568d | 970 | |
f5d78688 | 971 | #endif |
c55a77db PH |
972 | else if (argv[argi][1] == 't' && isdigit(argv[argi][2])) |
973 | { | |
1ec3f27d PP |
974 | tmplong = strtol(argv[argi]+2, &end, 10); |
975 | if (end == argv[argi]+2 || *end) | |
976 | { | |
977 | fprintf(stderr, "Failed to parse seconds from option <%s>\n", | |
978 | argv[argi]); | |
9ff403f8 | 979 | exit(95); |
1ec3f27d PP |
980 | } |
981 | if (tmplong > 10000L) | |
982 | { | |
dd4c8678 | 983 | fprintf(stderr, "Unreasonably long wait of %ld seconds requested\n", |
1ec3f27d | 984 | tmplong); |
9ff403f8 | 985 | exit(94); |
1ec3f27d PP |
986 | } |
987 | if (tmplong < 0L) | |
988 | { | |
dd4c8678 | 989 | fprintf(stderr, "Timeout must not be negative (%ld)\n", tmplong); |
9ff403f8 | 990 | exit(93); |
1ec3f27d PP |
991 | } |
992 | timeout = (int) tmplong; | |
c55a77db PH |
993 | argi++; |
994 | } | |
995 | else | |
996 | { | |
1ec3f27d | 997 | fprintf(stderr, "Unrecognized option %s\n", argv[argi]); |
9ff403f8 | 998 | exit(92); |
c55a77db PH |
999 | } |
1000 | } | |
1001 | ||
1002 | /* Mandatory 1st arg is IP address */ | |
1003 | ||
1004 | if (argc < argi+1) | |
1005 | { | |
1ec3f27d | 1006 | fprintf(stderr, "No IP address given\n"); |
9ff403f8 | 1007 | exit(91); |
c55a77db PH |
1008 | } |
1009 | ||
1010 | address = argv[argi++]; | |
1011 | host_af = (strchr(address, ':') != NULL)? AF_INET6 : AF_INET; | |
1012 | ||
1013 | /* Mandatory 2nd arg is port */ | |
1014 | ||
1015 | if (argc < argi+1) | |
1016 | { | |
1ec3f27d | 1017 | fprintf(stderr, "No port number given\n"); |
9ff403f8 | 1018 | exit(90); |
c55a77db PH |
1019 | } |
1020 | ||
1021 | port = atoi(argv[argi++]); | |
1022 | ||
1023 | /* Optional next arg is interface */ | |
1024 | ||
1025 | if (argc > argi && | |
1026 | (isdigit((unsigned char)argv[argi][0]) || argv[argi][0] == ':')) | |
1027 | interface = argv[argi++]; | |
1028 | ||
1029 | /* Any more arguments are the name of a certificate file and key file */ | |
1030 | ||
1031 | if (argc > argi) certfile = argv[argi++]; | |
1032 | if (argc > argi) keyfile = argv[argi++]; | |
1033 | ||
1034 | ||
1035 | #if HAVE_IPV6 | |
1036 | /* For an IPv6 address, use an IPv6 sockaddr structure. */ | |
1037 | ||
1038 | if (host_af == AF_INET6) | |
1039 | { | |
1040 | s_ptr = (struct sockaddr *)&s_in6; | |
1041 | s_len = sizeof(s_in6); | |
1042 | } | |
1043 | else | |
1044 | #endif | |
1045 | ||
1046 | /* For an IPv4 address, use an IPv4 sockaddr structure, | |
1047 | even on an IPv6 system. */ | |
1048 | ||
1049 | { | |
1050 | s_ptr = (struct sockaddr *)&s_in4; | |
1051 | s_len = sizeof(s_in4); | |
1052 | } | |
1053 | ||
1054 | printf("Connecting to %s port %d ... ", address, port); | |
1055 | ||
7bbb3621 JH |
1056 | srv.sock = socket(host_af, SOCK_STREAM, 0); |
1057 | if (srv.sock < 0) | |
c55a77db PH |
1058 | { |
1059 | printf("socket creation failed: %s\n", strerror(errno)); | |
9ff403f8 | 1060 | exit(89); |
c55a77db PH |
1061 | } |
1062 | ||
1063 | /* Bind to a specific interface if requested. On an IPv6 system, this has | |
1064 | to be of the same family as the address we are calling. On an IPv4 system the | |
1065 | test is redundant, but it keeps the code tidier. */ | |
1066 | ||
1067 | if (interface != NULL) | |
1068 | { | |
1069 | int interface_af = (strchr(interface, ':') != NULL)? AF_INET6 : AF_INET; | |
1070 | ||
1071 | if (interface_af == host_af) | |
1072 | { | |
1073 | #if HAVE_IPV6 | |
1074 | ||
1075 | /* Set up for IPv6 binding */ | |
1076 | ||
1077 | if (host_af == AF_INET6) | |
1078 | { | |
1079 | memset(&s_in6, 0, sizeof(s_in6)); | |
1080 | s_in6.sin6_family = AF_INET6; | |
1081 | s_in6.sin6_port = 0; | |
1082 | if (inet_pton(AF_INET6, interface, &s_in6.sin6_addr) != 1) | |
1083 | { | |
1084 | printf("Unable to parse \"%s\"", interface); | |
9ff403f8 | 1085 | exit(88); |
c55a77db PH |
1086 | } |
1087 | } | |
1088 | else | |
1089 | #endif | |
1090 | ||
1091 | /* Set up for IPv4 binding */ | |
1092 | ||
1093 | { | |
1094 | memset(&s_in4, 0, sizeof(s_in4)); | |
1095 | s_in4.sin_family = AF_INET; | |
1096 | s_in4.sin_port = 0; | |
1097 | s_in4.sin_addr.s_addr = (S_ADDR_TYPE)inet_addr(interface); | |
1098 | } | |
1099 | ||
1100 | /* Bind */ | |
1101 | ||
7bbb3621 | 1102 | if (bind(srv.sock, s_ptr, s_len) < 0) |
c55a77db PH |
1103 | { |
1104 | printf("Unable to bind outgoing SMTP call to %s: %s", | |
1105 | interface, strerror(errno)); | |
9ff403f8 | 1106 | exit(87); |
c55a77db PH |
1107 | } |
1108 | } | |
1109 | } | |
1110 | ||
1111 | /* Set up a remote IPv6 address */ | |
1112 | ||
1113 | #if HAVE_IPV6 | |
1114 | if (host_af == AF_INET6) | |
1115 | { | |
1116 | memset(&s_in6, 0, sizeof(s_in6)); | |
1117 | s_in6.sin6_family = AF_INET6; | |
1118 | s_in6.sin6_port = htons(port); | |
1119 | if (inet_pton(host_af, address, &s_in6.sin6_addr) != 1) | |
1120 | { | |
1121 | printf("Unable to parse \"%s\"", address); | |
9ff403f8 | 1122 | exit(86); |
c55a77db PH |
1123 | } |
1124 | } | |
1125 | else | |
1126 | #endif | |
1127 | ||
1128 | /* Set up a remote IPv4 address */ | |
1129 | ||
1130 | { | |
1131 | memset(&s_in4, 0, sizeof(s_in4)); | |
1132 | s_in4.sin_family = AF_INET; | |
1133 | s_in4.sin_port = htons(port); | |
1134 | s_in4.sin_addr.s_addr = (S_ADDR_TYPE)inet_addr(address); | |
1135 | } | |
1136 | ||
1137 | /* SIGALRM handler crashes out */ | |
1138 | ||
1139 | signal(SIGALRM, sigalrm_handler_crash); | |
1140 | alarm(timeout); | |
7bbb3621 | 1141 | rc = connect(srv.sock, s_ptr, s_len); |
c55a77db PH |
1142 | save_errno = errno; |
1143 | alarm(0); | |
1144 | ||
1145 | /* A failure whose error code is "Interrupted system call" is in fact | |
1146 | an externally applied timeout if the signal handler has been run. */ | |
1147 | ||
1148 | if (rc < 0) | |
1149 | { | |
7bbb3621 | 1150 | close(srv.sock); |
41fdef91 | 1151 | printf("connect failed: %s\n", strerror(save_errno)); |
9ff403f8 | 1152 | exit(85); |
c55a77db PH |
1153 | } |
1154 | ||
1155 | printf("connected\n"); | |
1156 | ||
1157 | ||
1158 | /* --------------- Set up for OpenSSL --------------- */ | |
1159 | ||
1160 | #ifdef HAVE_OPENSSL | |
1161 | SSL_library_init(); | |
1162 | SSL_load_error_strings(); | |
1163 | ||
7bbb3621 | 1164 | if (!(srv.ctx = SSL_CTX_new(SSLv23_method()))) |
c55a77db PH |
1165 | { |
1166 | printf ("SSL_CTX_new failed\n"); | |
9ff403f8 | 1167 | exit(84); |
c55a77db PH |
1168 | } |
1169 | ||
7bbb3621 | 1170 | if (certfile) |
c55a77db | 1171 | { |
7bbb3621 | 1172 | if (!SSL_CTX_use_certificate_file(srv.ctx, certfile, SSL_FILETYPE_PEM)) |
c55a77db PH |
1173 | { |
1174 | printf("SSL_CTX_use_certificate_file failed\n"); | |
9ff403f8 | 1175 | exit(83); |
c55a77db PH |
1176 | } |
1177 | printf("Certificate file = %s\n", certfile); | |
1178 | } | |
1179 | ||
7bbb3621 | 1180 | if (keyfile) |
c55a77db | 1181 | { |
7bbb3621 | 1182 | if (!SSL_CTX_use_PrivateKey_file(srv.ctx, keyfile, SSL_FILETYPE_PEM)) |
c55a77db PH |
1183 | { |
1184 | printf("SSL_CTX_use_PrivateKey_file failed\n"); | |
9ff403f8 | 1185 | exit(82); |
c55a77db PH |
1186 | } |
1187 | printf("Key file = %s\n", keyfile); | |
1188 | } | |
1189 | ||
7bbb3621 JH |
1190 | SSL_CTX_set_session_cache_mode(srv.ctx, SSL_SESS_CACHE_BOTH); |
1191 | SSL_CTX_set_timeout(srv.ctx, 200); | |
1192 | SSL_CTX_set_info_callback(srv.ctx, (void (*)())info_callback); | |
c55a77db PH |
1193 | #endif |
1194 | ||
1195 | ||
1196 | /* --------------- Set up for GnuTLS --------------- */ | |
1197 | ||
1198 | #ifdef HAVE_GNUTLS | |
1199 | if (certfile != NULL) printf("Certificate file = %s\n", certfile); | |
1200 | if (keyfile != NULL) printf("Key file = %s\n", keyfile); | |
059f2ace | 1201 | tls_init(US certfile, US keyfile); |
c55a77db | 1202 | tls_session = tls_session_init(); |
348051ad | 1203 | #ifdef HAVE_OCSP |
2b4a568d JH |
1204 | if (ocsp_stapling) |
1205 | gnutls_ocsp_status_request_enable_client(tls_session, NULL, 0, NULL); | |
348051ad | 1206 | #endif |
7bbb3621 | 1207 | gnutls_transport_set_ptr(tls_session, (gnutls_transport_ptr_t)(intptr_t)srv.sock); |
c55a77db PH |
1208 | |
1209 | /* When the server asks for a certificate and the client does not have one, | |
1210 | there is a SIGPIPE error in the gnutls_handshake() function for some reason | |
1211 | that is not understood. As luck would have it, this has never hit Exim itself | |
1212 | because it ignores SIGPIPE errors. Doing the same here allows it all to work as | |
1213 | one wants. */ | |
1214 | ||
1215 | signal(SIGPIPE, SIG_IGN); | |
1216 | #endif | |
1217 | ||
1218 | /* ---------------------------------------------- */ | |
1219 | ||
1220 | ||
1221 | /* Start TLS session if configured to do so without STARTTLS */ | |
1222 | ||
1223 | #ifdef HAVE_TLS | |
1224 | if (tls_on_connect) | |
1225 | { | |
1226 | printf("Attempting to start TLS\n"); | |
1227 | ||
fc4fcc34 | 1228 | #ifdef HAVE_OPENSSL |
7bbb3621 | 1229 | srv.tls_active = tls_start(srv.sock, &srv.ssl, srv.ctx); |
fc4fcc34 | 1230 | #endif |
c55a77db | 1231 | |
fc4fcc34 JH |
1232 | #ifdef HAVE_GNUTLS |
1233 | { | |
1234 | int rc; | |
c55a77db PH |
1235 | sigalrm_seen = FALSE; |
1236 | alarm(timeout); | |
fc4fcc34 JH |
1237 | do { |
1238 | rc = gnutls_handshake(tls_session); | |
1239 | } while (rc < 0 && gnutls_error_is_fatal(rc) == 0); | |
7bbb3621 | 1240 | srv.tls_active = rc >= 0; |
c55a77db | 1241 | alarm(0); |
fc4fcc34 | 1242 | |
7bbb3621 | 1243 | if (!srv.tls_active) printf("%s\n", gnutls_strerror(rc)); |
fc4fcc34 JH |
1244 | } |
1245 | #endif | |
c55a77db | 1246 | |
7bbb3621 | 1247 | if (!srv.tls_active) |
c55a77db | 1248 | printf("Failed to start TLS\n"); |
fc4fcc34 | 1249 | #if defined(HAVE_GNUTLS) && defined(HAVE_OCSP) |
2b4a568d JH |
1250 | else if ( ocsp_stapling |
1251 | && gnutls_ocsp_status_request_is_checked(tls_session, 0) == 0) | |
1252 | printf("Failed to verify certificate status\n"); | |
fc4fcc34 | 1253 | #endif |
c55a77db PH |
1254 | else |
1255 | printf("Succeeded in starting TLS\n"); | |
1256 | } | |
1257 | #endif | |
1258 | ||
7bbb3621 | 1259 | do_file(&srv, stdin, timeout, inbuffer, sizeof(inbuffer), inptr); |
c55a77db PH |
1260 | |
1261 | printf("End of script\n"); | |
7bbb3621 | 1262 | shutdown(srv.sock, SHUT_WR); |
ce80533b JH |
1263 | if (fcntl(srv.sock, F_SETFL, O_NONBLOCK) == 0) |
1264 | while (read(srv.sock, inbuffer, sizeof(inbuffer)) > 0) ; | |
7bbb3621 | 1265 | close(srv.sock); |
c55a77db PH |
1266 | |
1267 | exit(0); | |
1268 | } | |
1269 | ||
1270 | /* End of client.c */ |