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 | ||
fc4fcc34 | 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 }; | |
fc4fcc34 | 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; | |
136 | #endif | |
137 | ||
c55a77db PH |
138 | |
139 | /************************************************* | |
140 | * SIGALRM handler - crash out * | |
141 | *************************************************/ | |
142 | ||
143 | static void | |
144 | sigalrm_handler_crash(int sig) | |
145 | { | |
146 | sig = sig; /* Keep picky compilers happy */ | |
147 | printf("\nClient timed out\n"); | |
148 | exit(99); | |
149 | } | |
150 | ||
151 | ||
152 | /************************************************* | |
153 | * SIGALRM handler - set flag * | |
154 | *************************************************/ | |
155 | ||
156 | static void | |
157 | sigalrm_handler_flag(int sig) | |
158 | { | |
159 | sig = sig; /* Keep picky compilers happy */ | |
160 | sigalrm_seen = 1; | |
161 | } | |
162 | ||
163 | ||
164 | ||
165 | /****************************************************************************/ | |
166 | /****************************************************************************/ | |
167 | ||
168 | #ifdef HAVE_OPENSSL | |
f5d78688 JH |
169 | |
170 | X509_STORE * | |
171 | setup_verify(BIO *bp, char *CAfile, char *CApath) | |
172 | { | |
173 | X509_STORE *store; | |
174 | X509_LOOKUP *lookup; | |
175 | if(!(store = X509_STORE_new())) goto end; | |
176 | lookup=X509_STORE_add_lookup(store,X509_LOOKUP_file()); | |
177 | if (lookup == NULL) goto end; | |
178 | if (CAfile) { | |
179 | if(!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM)) { | |
180 | BIO_printf(bp, "Error loading file %s\n", CAfile); | |
181 | goto end; | |
182 | } | |
183 | } else X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT); | |
184 | ||
185 | lookup=X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir()); | |
186 | if (lookup == NULL) goto end; | |
187 | if (CApath) { | |
188 | if(!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM)) { | |
189 | BIO_printf(bp, "Error loading directory %s\n", CApath); | |
190 | goto end; | |
191 | } | |
192 | } else X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT); | |
193 | ||
194 | ERR_clear_error(); | |
195 | return store; | |
196 | end: | |
197 | X509_STORE_free(store); | |
198 | return NULL; | |
199 | } | |
200 | ||
201 | ||
6d68e1c7 | 202 | #ifndef DISABLE_OCSP |
ee5b1e28 JH |
203 | static STACK_OF(X509) * |
204 | cert_stack_from_store(X509_STORE * store) | |
205 | { | |
206 | STACK_OF(X509_OBJECT) * roots= store->objs; | |
207 | STACK_OF(X509) * sk = sk_X509_new_null(); | |
208 | int i; | |
209 | ||
210 | for(i = sk_X509_OBJECT_num(roots) - 1; i >= 0; i--) | |
211 | { | |
212 | X509_OBJECT * tmp_obj= sk_X509_OBJECT_value(roots, i); | |
213 | if(tmp_obj->type == X509_LU_X509) | |
214 | { | |
215 | X509 * x = tmp_obj->data.x509; | |
216 | sk_X509_push(sk, x); | |
217 | } | |
218 | } | |
219 | return sk; | |
220 | } | |
221 | ||
222 | static void | |
223 | cert_stack_free(STACK_OF(X509) * sk) | |
224 | { | |
225 | while (sk_X509_num(sk) > 0) (void) sk_X509_pop(sk); | |
226 | sk_X509_free(sk); | |
227 | } | |
228 | ||
229 | ||
f5d78688 JH |
230 | static int |
231 | tls_client_stapling_cb(SSL *s, void *arg) | |
232 | { | |
233 | const unsigned char *p; | |
234 | int len; | |
235 | OCSP_RESPONSE *rsp; | |
236 | OCSP_BASICRESP *bs; | |
237 | char *CAfile = NULL; | |
238 | X509_STORE *store = NULL; | |
ee5b1e28 | 239 | STACK_OF(X509) * sk; |
f5d78688 JH |
240 | int ret = 1; |
241 | ||
242 | len = SSL_get_tlsext_status_ocsp_resp(s, &p); | |
243 | /*BIO_printf(arg, "OCSP response: ");*/ | |
244 | if (!p) | |
245 | { | |
246 | BIO_printf(arg, "no response received\n"); | |
247 | return 1; | |
248 | } | |
249 | if(!(rsp = d2i_OCSP_RESPONSE(NULL, &p, len))) | |
250 | { | |
251 | BIO_printf(arg, "response parse error\n"); | |
252 | BIO_dump_indent(arg, (char *)p, len, 4); | |
253 | return 0; | |
254 | } | |
255 | if(!(bs = OCSP_response_get1_basic(rsp))) | |
256 | { | |
257 | BIO_printf(arg, "error parsing response\n"); | |
258 | return 0; | |
259 | } | |
260 | ||
ee5b1e28 | 261 | |
f5d78688 JH |
262 | CAfile = ocsp_stapling; |
263 | if(!(store = setup_verify(arg, CAfile, NULL))) | |
264 | { | |
265 | BIO_printf(arg, "error in cert setup\n"); | |
266 | return 0; | |
267 | } | |
268 | ||
ee5b1e28 JH |
269 | sk = cert_stack_from_store(store); |
270 | ||
271 | /* OCSP_basic_verify takes a "store" arg, but does not | |
272 | use it for the chain verification, which is all we do | |
273 | when OCSP_NOVERIFY is set. The content from the wire | |
274 | (in "bs") and a cert-stack "sk" are all that is used. */ | |
275 | ||
276 | if(OCSP_basic_verify(bs, sk, NULL, OCSP_NOVERIFY) <= 0) | |
f5d78688 JH |
277 | { |
278 | BIO_printf(arg, "Response Verify Failure\n"); | |
279 | ERR_print_errors(arg); | |
280 | ret = 0; | |
281 | } | |
282 | else | |
283 | BIO_printf(arg, "Response verify OK\n"); | |
284 | ||
ee5b1e28 | 285 | cert_stack_free(sk); |
f5d78688 JH |
286 | X509_STORE_free(store); |
287 | return ret; | |
288 | } | |
6d68e1c7 | 289 | #endif |
f5d78688 JH |
290 | |
291 | ||
c55a77db PH |
292 | /************************************************* |
293 | * Start an OpenSSL TLS session * | |
294 | *************************************************/ | |
295 | ||
2b4a568d JH |
296 | int |
297 | tls_start(int sock, SSL **ssl, SSL_CTX *ctx) | |
c55a77db PH |
298 | { |
299 | int rc; | |
57cde6e4 | 300 | static const unsigned char *sid_ctx = US"exim"; |
c55a77db PH |
301 | |
302 | RAND_load_file("client.c", -1); /* Not *very* random! */ | |
303 | ||
304 | *ssl = SSL_new (ctx); | |
57cde6e4 | 305 | SSL_set_session_id_context(*ssl, sid_ctx, strlen(CS sid_ctx)); |
c55a77db PH |
306 | SSL_set_fd (*ssl, sock); |
307 | SSL_set_connect_state(*ssl); | |
308 | ||
6d68e1c7 | 309 | #ifndef DISABLE_OCSP |
f5d78688 JH |
310 | if (ocsp_stapling) |
311 | { | |
312 | SSL_CTX_set_tlsext_status_cb(ctx, tls_client_stapling_cb); | |
313 | SSL_CTX_set_tlsext_status_arg(ctx, BIO_new_fp(stdout, BIO_NOCLOSE)); | |
314 | SSL_set_tlsext_status_type(*ssl, TLSEXT_STATUSTYPE_ocsp); | |
315 | } | |
6d68e1c7 | 316 | #endif |
f5d78688 | 317 | |
c55a77db PH |
318 | signal(SIGALRM, sigalrm_handler_flag); |
319 | sigalrm_seen = 0; | |
320 | alarm(5); | |
321 | rc = SSL_connect (*ssl); | |
322 | alarm(0); | |
323 | ||
324 | if (sigalrm_seen) | |
325 | { | |
326 | printf("SSL_connect timed out\n"); | |
327 | return 0; | |
328 | } | |
329 | ||
330 | if (rc <= 0) | |
331 | { | |
332 | ERR_print_errors_fp(stdout); | |
333 | return 0; | |
334 | } | |
335 | ||
336 | printf("SSL connection using %s\n", SSL_get_cipher (*ssl)); | |
337 | return 1; | |
338 | } | |
339 | ||
340 | ||
341 | /************************************************* | |
342 | * SSL Information callback * | |
343 | *************************************************/ | |
344 | ||
345 | static void | |
346 | info_callback(SSL *s, int where, int ret) | |
347 | { | |
348 | where = where; | |
349 | ret = ret; | |
350 | printf("SSL info: %s\n", SSL_state_string_long(s)); | |
351 | } | |
352 | #endif | |
353 | ||
354 | ||
355 | /****************************************************************************/ | |
356 | /****************************************************************************/ | |
357 | ||
358 | ||
359 | #ifdef HAVE_GNUTLS | |
360 | /************************************************* | |
361 | * Handle GnuTLS error * | |
362 | *************************************************/ | |
363 | ||
364 | /* Called from lots of places when errors occur before actually starting to do | |
365 | the TLS handshake, that is, while the session is still in clear. | |
366 | ||
367 | Argument: | |
368 | prefix prefix text | |
369 | err a GnuTLS error number, or 0 if local error | |
370 | ||
371 | Returns: doesn't - it dies | |
372 | */ | |
373 | ||
374 | static void | |
375 | gnutls_error(uschar *prefix, int err) | |
376 | { | |
bb727765 | 377 | fprintf(stderr, "GnuTLS connection error: %s:", prefix); |
c55a77db PH |
378 | if (err != 0) fprintf(stderr, " %s", gnutls_strerror(err)); |
379 | fprintf(stderr, "\n"); | |
9ff403f8 | 380 | exit(98); |
c55a77db PH |
381 | } |
382 | ||
383 | ||
384 | ||
385 | /************************************************* | |
bb727765 | 386 | * Setup up DH parameters * |
c55a77db PH |
387 | *************************************************/ |
388 | ||
389 | /* For the test suite, the parameters should always be available in the spool | |
390 | directory. */ | |
391 | ||
392 | static void | |
bb727765 | 393 | init_dh(void) |
c55a77db PH |
394 | { |
395 | int fd; | |
396 | int ret; | |
fc4fcc34 | 397 | gnutls_datum_t m; |
c55a77db PH |
398 | uschar filename[200]; |
399 | struct stat statbuf; | |
400 | ||
401 | /* Initialize the data structures for holding the parameters */ | |
402 | ||
c55a77db PH |
403 | ret = gnutls_dh_params_init(&dh_params); |
404 | if (ret < 0) gnutls_error(US"init dh_params", ret); | |
405 | ||
406 | /* Open the cache file for reading and if successful, read it and set up the | |
bb727765 | 407 | parameters. */ |
c55a77db PH |
408 | |
409 | fd = open("aux-fixed/gnutls-params", O_RDONLY, 0); | |
410 | if (fd < 0) | |
411 | { | |
412 | fprintf(stderr, "Failed to open spool/gnutls-params: %s\n", strerror(errno)); | |
9ff403f8 | 413 | exit(97); |
c55a77db PH |
414 | } |
415 | ||
416 | if (fstat(fd, &statbuf) < 0) | |
417 | { | |
418 | (void)close(fd); | |
419 | return gnutls_error(US"TLS cache stat failed", 0); | |
420 | } | |
421 | ||
422 | m.size = statbuf.st_size; | |
423 | m.data = malloc(m.size); | |
424 | if (m.data == NULL) | |
425 | return gnutls_error(US"memory allocation failed", 0); | |
426 | if (read(fd, m.data, m.size) != m.size) | |
427 | return gnutls_error(US"TLS cache read failed", 0); | |
428 | (void)close(fd); | |
429 | ||
c55a77db PH |
430 | ret = gnutls_dh_params_import_pkcs3(dh_params, &m, GNUTLS_X509_FMT_PEM); |
431 | if (ret < 0) return gnutls_error(US"DH params import", ret); | |
432 | free(m.data); | |
433 | } | |
434 | ||
435 | ||
436 | ||
437 | ||
438 | /************************************************* | |
439 | * Initialize for GnuTLS * | |
440 | *************************************************/ | |
441 | ||
442 | /* | |
443 | Arguments: | |
444 | certificate certificate file | |
445 | privatekey private key file | |
446 | */ | |
447 | ||
448 | static void | |
449 | tls_init(uschar *certificate, uschar *privatekey) | |
450 | { | |
451 | int rc; | |
452 | ||
453 | rc = gnutls_global_init(); | |
454 | if (rc < 0) gnutls_error(US"gnutls_global_init", rc); | |
455 | ||
bb727765 | 456 | /* Read D-H parameters from the cache file. */ |
c55a77db | 457 | |
bb727765 | 458 | init_dh(); |
c55a77db PH |
459 | |
460 | /* Create the credentials structure */ | |
461 | ||
462 | rc = gnutls_certificate_allocate_credentials(&x509_cred); | |
463 | if (rc < 0) gnutls_error(US"certificate_allocate_credentials", rc); | |
464 | ||
465 | /* Set the certificate and private keys */ | |
466 | ||
467 | if (certificate != NULL) | |
468 | { | |
469 | rc = gnutls_certificate_set_x509_key_file(x509_cred, CS certificate, | |
470 | CS privatekey, GNUTLS_X509_FMT_PEM); | |
471 | if (rc < 0) gnutls_error("gnutls_certificate", rc); | |
472 | } | |
473 | ||
474 | /* Associate the parameters with the x509 credentials structure. */ | |
475 | ||
476 | gnutls_certificate_set_dh_params(x509_cred, dh_params); | |
2b4a568d JH |
477 | |
478 | /* set the CA info for server-cert verify */ | |
479 | if (ocsp_stapling) | |
480 | gnutls_certificate_set_x509_trust_file(x509_cred, ocsp_stapling, | |
481 | GNUTLS_X509_FMT_PEM); | |
c55a77db PH |
482 | } |
483 | ||
484 | ||
485 | ||
486 | /************************************************* | |
487 | * Initialize a single GNUTLS session * | |
488 | *************************************************/ | |
489 | ||
fc4fcc34 | 490 | static gnutls_session_t |
c55a77db PH |
491 | tls_session_init(void) |
492 | { | |
fc4fcc34 | 493 | gnutls_session_t session; |
c55a77db | 494 | |
0886a95e | 495 | gnutls_init(&session, GNUTLS_CLIENT | GNUTLS_NO_EXTENSIONS); |
c55a77db | 496 | |
fc4fcc34 | 497 | #if GNUTLS_VERSION_NUMBER < 0x030400 |
c55a77db PH |
498 | gnutls_cipher_set_priority(session, default_cipher_priority); |
499 | gnutls_compression_set_priority(session, comp_priority); | |
500 | gnutls_kx_set_priority(session, kx_priority); | |
501 | gnutls_protocol_set_priority(session, protocol_priority); | |
502 | gnutls_mac_set_priority(session, mac_priority); | |
503 | ||
504 | gnutls_cred_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred); | |
fc4fcc34 JH |
505 | #else |
506 | gnutls_set_default_priority(session); | |
507 | gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred); | |
508 | #endif | |
c55a77db PH |
509 | |
510 | gnutls_dh_set_prime_bits(session, DH_BITS); | |
511 | gnutls_db_set_cache_expiration(session, ssl_session_timeout); | |
512 | ||
513 | return session; | |
514 | } | |
515 | #endif | |
516 | ||
517 | ||
518 | /****************************************************************************/ | |
519 | /****************************************************************************/ | |
520 | ||
521 | ||
522 | ||
523 | ||
524 | /************************************************* | |
525 | * Main Program * | |
526 | *************************************************/ | |
527 | ||
4fe99a6c | 528 | const char * const HELP_MESSAGE = "\n\ |
972e83f5 HSHR |
529 | Usage: client\n" |
530 | #ifdef HAVE_TLS | |
531 | "\ | |
532 | [-tls-on-connect]\n\ | |
533 | [-ocsp]\n" | |
534 | #endif | |
535 | "\ | |
536 | [-tn] n seconds timeout\n\ | |
4fe99a6c PP |
537 | <IP address>\n\ |
538 | <port>\n\ | |
539 | [<outgoing interface>]\n\ | |
540 | [<cert file>]\n\ | |
541 | [<key file>]\n\ | |
542 | \n"; | |
c55a77db PH |
543 | |
544 | int main(int argc, char **argv) | |
545 | { | |
546 | struct sockaddr *s_ptr; | |
547 | struct sockaddr_in s_in4; | |
548 | char *interface = NULL; | |
549 | char *address = NULL; | |
550 | char *certfile = NULL; | |
551 | char *keyfile = NULL; | |
1ec3f27d | 552 | char *end = NULL; |
c55a77db PH |
553 | int argi = 1; |
554 | int host_af, port, s_len, rc, sock, save_errno; | |
d528a389 | 555 | int timeout = 5; |
c55a77db PH |
556 | int tls_active = 0; |
557 | int sent_starttls = 0; | |
558 | int tls_on_connect = 0; | |
1ec3f27d | 559 | long tmplong; |
c55a77db PH |
560 | |
561 | #if HAVE_IPV6 | |
562 | struct sockaddr_in6 s_in6; | |
563 | #endif | |
564 | ||
565 | #ifdef HAVE_OPENSSL | |
566 | SSL_CTX* ctx; | |
567 | SSL* ssl; | |
568 | #endif | |
569 | ||
570 | unsigned char outbuffer[10240]; | |
571 | unsigned char inbuffer[10240]; | |
572 | unsigned char *inptr = inbuffer; | |
573 | ||
574 | *inptr = 0; /* Buffer empty */ | |
575 | ||
576 | /* Options */ | |
577 | ||
578 | while (argc >= argi + 1 && argv[argi][0] == '-') | |
579 | { | |
4fe99a6c PP |
580 | if (strcmp(argv[argi], "-help") == 0 || |
581 | strcmp(argv[argi], "--help") == 0 || | |
582 | strcmp(argv[argi], "-h") == 0) | |
583 | { | |
dd4c8678 | 584 | puts(HELP_MESSAGE); |
4fe99a6c PP |
585 | exit(0); |
586 | } | |
c55a77db PH |
587 | if (strcmp(argv[argi], "-tls-on-connect") == 0) |
588 | { | |
589 | tls_on_connect = 1; | |
590 | argi++; | |
591 | } | |
2b4a568d | 592 | #ifdef HAVE_TLS |
f5d78688 JH |
593 | else if (strcmp(argv[argi], "-ocsp") == 0) |
594 | { | |
595 | if (argc < ++argi + 1) | |
596 | { | |
597 | fprintf(stderr, "Missing required certificate file for ocsp option\n"); | |
9ff403f8 | 598 | exit(96); |
f5d78688 JH |
599 | } |
600 | ocsp_stapling = argv[argi++]; | |
601 | } | |
2b4a568d | 602 | |
f5d78688 | 603 | #endif |
c55a77db PH |
604 | else if (argv[argi][1] == 't' && isdigit(argv[argi][2])) |
605 | { | |
1ec3f27d PP |
606 | tmplong = strtol(argv[argi]+2, &end, 10); |
607 | if (end == argv[argi]+2 || *end) | |
608 | { | |
609 | fprintf(stderr, "Failed to parse seconds from option <%s>\n", | |
610 | argv[argi]); | |
9ff403f8 | 611 | exit(95); |
1ec3f27d PP |
612 | } |
613 | if (tmplong > 10000L) | |
614 | { | |
dd4c8678 | 615 | fprintf(stderr, "Unreasonably long wait of %ld seconds requested\n", |
1ec3f27d | 616 | tmplong); |
9ff403f8 | 617 | exit(94); |
1ec3f27d PP |
618 | } |
619 | if (tmplong < 0L) | |
620 | { | |
dd4c8678 | 621 | fprintf(stderr, "Timeout must not be negative (%ld)\n", tmplong); |
9ff403f8 | 622 | exit(93); |
1ec3f27d PP |
623 | } |
624 | timeout = (int) tmplong; | |
c55a77db PH |
625 | argi++; |
626 | } | |
627 | else | |
628 | { | |
1ec3f27d | 629 | fprintf(stderr, "Unrecognized option %s\n", argv[argi]); |
9ff403f8 | 630 | exit(92); |
c55a77db PH |
631 | } |
632 | } | |
633 | ||
634 | /* Mandatory 1st arg is IP address */ | |
635 | ||
636 | if (argc < argi+1) | |
637 | { | |
1ec3f27d | 638 | fprintf(stderr, "No IP address given\n"); |
9ff403f8 | 639 | exit(91); |
c55a77db PH |
640 | } |
641 | ||
642 | address = argv[argi++]; | |
643 | host_af = (strchr(address, ':') != NULL)? AF_INET6 : AF_INET; | |
644 | ||
645 | /* Mandatory 2nd arg is port */ | |
646 | ||
647 | if (argc < argi+1) | |
648 | { | |
1ec3f27d | 649 | fprintf(stderr, "No port number given\n"); |
9ff403f8 | 650 | exit(90); |
c55a77db PH |
651 | } |
652 | ||
653 | port = atoi(argv[argi++]); | |
654 | ||
655 | /* Optional next arg is interface */ | |
656 | ||
657 | if (argc > argi && | |
658 | (isdigit((unsigned char)argv[argi][0]) || argv[argi][0] == ':')) | |
659 | interface = argv[argi++]; | |
660 | ||
661 | /* Any more arguments are the name of a certificate file and key file */ | |
662 | ||
663 | if (argc > argi) certfile = argv[argi++]; | |
664 | if (argc > argi) keyfile = argv[argi++]; | |
665 | ||
666 | ||
667 | #if HAVE_IPV6 | |
668 | /* For an IPv6 address, use an IPv6 sockaddr structure. */ | |
669 | ||
670 | if (host_af == AF_INET6) | |
671 | { | |
672 | s_ptr = (struct sockaddr *)&s_in6; | |
673 | s_len = sizeof(s_in6); | |
674 | } | |
675 | else | |
676 | #endif | |
677 | ||
678 | /* For an IPv4 address, use an IPv4 sockaddr structure, | |
679 | even on an IPv6 system. */ | |
680 | ||
681 | { | |
682 | s_ptr = (struct sockaddr *)&s_in4; | |
683 | s_len = sizeof(s_in4); | |
684 | } | |
685 | ||
686 | printf("Connecting to %s port %d ... ", address, port); | |
687 | ||
688 | sock = socket(host_af, SOCK_STREAM, 0); | |
689 | if (sock < 0) | |
690 | { | |
691 | printf("socket creation failed: %s\n", strerror(errno)); | |
9ff403f8 | 692 | exit(89); |
c55a77db PH |
693 | } |
694 | ||
695 | /* Bind to a specific interface if requested. On an IPv6 system, this has | |
696 | to be of the same family as the address we are calling. On an IPv4 system the | |
697 | test is redundant, but it keeps the code tidier. */ | |
698 | ||
699 | if (interface != NULL) | |
700 | { | |
701 | int interface_af = (strchr(interface, ':') != NULL)? AF_INET6 : AF_INET; | |
702 | ||
703 | if (interface_af == host_af) | |
704 | { | |
705 | #if HAVE_IPV6 | |
706 | ||
707 | /* Set up for IPv6 binding */ | |
708 | ||
709 | if (host_af == AF_INET6) | |
710 | { | |
711 | memset(&s_in6, 0, sizeof(s_in6)); | |
712 | s_in6.sin6_family = AF_INET6; | |
713 | s_in6.sin6_port = 0; | |
714 | if (inet_pton(AF_INET6, interface, &s_in6.sin6_addr) != 1) | |
715 | { | |
716 | printf("Unable to parse \"%s\"", interface); | |
9ff403f8 | 717 | exit(88); |
c55a77db PH |
718 | } |
719 | } | |
720 | else | |
721 | #endif | |
722 | ||
723 | /* Set up for IPv4 binding */ | |
724 | ||
725 | { | |
726 | memset(&s_in4, 0, sizeof(s_in4)); | |
727 | s_in4.sin_family = AF_INET; | |
728 | s_in4.sin_port = 0; | |
729 | s_in4.sin_addr.s_addr = (S_ADDR_TYPE)inet_addr(interface); | |
730 | } | |
731 | ||
732 | /* Bind */ | |
733 | ||
734 | if (bind(sock, s_ptr, s_len) < 0) | |
735 | { | |
736 | printf("Unable to bind outgoing SMTP call to %s: %s", | |
737 | interface, strerror(errno)); | |
9ff403f8 | 738 | exit(87); |
c55a77db PH |
739 | } |
740 | } | |
741 | } | |
742 | ||
743 | /* Set up a remote IPv6 address */ | |
744 | ||
745 | #if HAVE_IPV6 | |
746 | if (host_af == AF_INET6) | |
747 | { | |
748 | memset(&s_in6, 0, sizeof(s_in6)); | |
749 | s_in6.sin6_family = AF_INET6; | |
750 | s_in6.sin6_port = htons(port); | |
751 | if (inet_pton(host_af, address, &s_in6.sin6_addr) != 1) | |
752 | { | |
753 | printf("Unable to parse \"%s\"", address); | |
9ff403f8 | 754 | exit(86); |
c55a77db PH |
755 | } |
756 | } | |
757 | else | |
758 | #endif | |
759 | ||
760 | /* Set up a remote IPv4 address */ | |
761 | ||
762 | { | |
763 | memset(&s_in4, 0, sizeof(s_in4)); | |
764 | s_in4.sin_family = AF_INET; | |
765 | s_in4.sin_port = htons(port); | |
766 | s_in4.sin_addr.s_addr = (S_ADDR_TYPE)inet_addr(address); | |
767 | } | |
768 | ||
769 | /* SIGALRM handler crashes out */ | |
770 | ||
771 | signal(SIGALRM, sigalrm_handler_crash); | |
772 | alarm(timeout); | |
773 | rc = connect(sock, s_ptr, s_len); | |
774 | save_errno = errno; | |
775 | alarm(0); | |
776 | ||
777 | /* A failure whose error code is "Interrupted system call" is in fact | |
778 | an externally applied timeout if the signal handler has been run. */ | |
779 | ||
780 | if (rc < 0) | |
781 | { | |
782 | close(sock); | |
41fdef91 | 783 | printf("connect failed: %s\n", strerror(save_errno)); |
9ff403f8 | 784 | exit(85); |
c55a77db PH |
785 | } |
786 | ||
787 | printf("connected\n"); | |
788 | ||
789 | ||
790 | /* --------------- Set up for OpenSSL --------------- */ | |
791 | ||
792 | #ifdef HAVE_OPENSSL | |
793 | SSL_library_init(); | |
794 | SSL_load_error_strings(); | |
795 | ||
796 | ctx = SSL_CTX_new(SSLv23_method()); | |
797 | if (ctx == NULL) | |
798 | { | |
799 | printf ("SSL_CTX_new failed\n"); | |
9ff403f8 | 800 | exit(84); |
c55a77db PH |
801 | } |
802 | ||
803 | if (certfile != NULL) | |
804 | { | |
805 | if (!SSL_CTX_use_certificate_file(ctx, certfile, SSL_FILETYPE_PEM)) | |
806 | { | |
807 | printf("SSL_CTX_use_certificate_file failed\n"); | |
9ff403f8 | 808 | exit(83); |
c55a77db PH |
809 | } |
810 | printf("Certificate file = %s\n", certfile); | |
811 | } | |
812 | ||
813 | if (keyfile != NULL) | |
814 | { | |
815 | if (!SSL_CTX_use_PrivateKey_file(ctx, keyfile, SSL_FILETYPE_PEM)) | |
816 | { | |
817 | printf("SSL_CTX_use_PrivateKey_file failed\n"); | |
9ff403f8 | 818 | exit(82); |
c55a77db PH |
819 | } |
820 | printf("Key file = %s\n", keyfile); | |
821 | } | |
822 | ||
823 | SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_BOTH); | |
824 | SSL_CTX_set_timeout(ctx, 200); | |
825 | SSL_CTX_set_info_callback(ctx, (void (*)())info_callback); | |
826 | #endif | |
827 | ||
828 | ||
829 | /* --------------- Set up for GnuTLS --------------- */ | |
830 | ||
831 | #ifdef HAVE_GNUTLS | |
832 | if (certfile != NULL) printf("Certificate file = %s\n", certfile); | |
833 | if (keyfile != NULL) printf("Key file = %s\n", keyfile); | |
834 | tls_init(certfile, keyfile); | |
835 | tls_session = tls_session_init(); | |
348051ad | 836 | #ifdef HAVE_OCSP |
2b4a568d JH |
837 | if (ocsp_stapling) |
838 | gnutls_ocsp_status_request_enable_client(tls_session, NULL, 0, NULL); | |
348051ad | 839 | #endif |
fc4fcc34 | 840 | gnutls_transport_set_ptr(tls_session, (gnutls_transport_ptr_t)(intptr_t)sock); |
c55a77db PH |
841 | |
842 | /* When the server asks for a certificate and the client does not have one, | |
843 | there is a SIGPIPE error in the gnutls_handshake() function for some reason | |
844 | that is not understood. As luck would have it, this has never hit Exim itself | |
845 | because it ignores SIGPIPE errors. Doing the same here allows it all to work as | |
846 | one wants. */ | |
847 | ||
848 | signal(SIGPIPE, SIG_IGN); | |
849 | #endif | |
850 | ||
851 | /* ---------------------------------------------- */ | |
852 | ||
853 | ||
854 | /* Start TLS session if configured to do so without STARTTLS */ | |
855 | ||
856 | #ifdef HAVE_TLS | |
857 | if (tls_on_connect) | |
858 | { | |
859 | printf("Attempting to start TLS\n"); | |
860 | ||
fc4fcc34 | 861 | #ifdef HAVE_OPENSSL |
c55a77db | 862 | tls_active = tls_start(sock, &ssl, ctx); |
fc4fcc34 | 863 | #endif |
c55a77db | 864 | |
fc4fcc34 JH |
865 | #ifdef HAVE_GNUTLS |
866 | { | |
867 | int rc; | |
c55a77db PH |
868 | sigalrm_seen = FALSE; |
869 | alarm(timeout); | |
fc4fcc34 JH |
870 | do { |
871 | rc = gnutls_handshake(tls_session); | |
872 | } while (rc < 0 && gnutls_error_is_fatal(rc) == 0); | |
873 | tls_active = rc >= 0; | |
c55a77db | 874 | alarm(0); |
fc4fcc34 JH |
875 | |
876 | if (!tls_active) printf("%s\n", gnutls_strerror(rc)); | |
877 | } | |
878 | #endif | |
c55a77db PH |
879 | |
880 | if (!tls_active) | |
881 | printf("Failed to start TLS\n"); | |
fc4fcc34 | 882 | #if defined(HAVE_GNUTLS) && defined(HAVE_OCSP) |
2b4a568d JH |
883 | else if ( ocsp_stapling |
884 | && gnutls_ocsp_status_request_is_checked(tls_session, 0) == 0) | |
885 | printf("Failed to verify certificate status\n"); | |
fc4fcc34 | 886 | #endif |
c55a77db PH |
887 | else |
888 | printf("Succeeded in starting TLS\n"); | |
889 | } | |
890 | #endif | |
891 | ||
a719fce4 | 892 | while (fgets(CS outbuffer, sizeof(outbuffer), stdin) != NULL) |
c55a77db | 893 | { |
a719fce4 | 894 | int n = (int)strlen(CS outbuffer); |
8dbb958a JH |
895 | |
896 | /* Strip trailing newline */ | |
897 | if (outbuffer[n-1] == '\n') outbuffer[--n] = 0; | |
c55a77db PH |
898 | |
899 | /* Expect incoming */ | |
900 | ||
5ddc9771 JH |
901 | if ( strncmp(CS outbuffer, "???", 3) == 0 |
902 | && (outbuffer[3] == ' ' || outbuffer[3] == '*') | |
903 | ) | |
c55a77db PH |
904 | { |
905 | unsigned char *lineptr; | |
5ddc9771 JH |
906 | unsigned exp_eof = outbuffer[3] == '*'; |
907 | ||
c55a77db PH |
908 | printf("%s\n", outbuffer); |
909 | ||
910 | if (*inptr == 0) /* Refill input buffer */ | |
911 | { | |
912 | if (tls_active) | |
913 | { | |
914 | #ifdef HAVE_OPENSSL | |
915 | rc = SSL_read (ssl, inbuffer, sizeof(inbuffer) - 1); | |
916 | #endif | |
917 | #ifdef HAVE_GNUTLS | |
918 | rc = gnutls_record_recv(tls_session, CS inbuffer, sizeof(inbuffer) - 1); | |
919 | #endif | |
920 | } | |
921 | else | |
922 | { | |
923 | alarm(timeout); | |
924 | rc = read(sock, inbuffer, sizeof(inbuffer)); | |
925 | alarm(0); | |
926 | } | |
927 | ||
928 | if (rc < 0) | |
5ddc9771 | 929 | { |
c55a77db | 930 | printf("Read error %s\n", strerror(errno)); |
5ddc9771 JH |
931 | exit(81); |
932 | } | |
c55a77db | 933 | else if (rc == 0) |
5ddc9771 JH |
934 | if (exp_eof) |
935 | { | |
936 | printf("Expected EOF read\n"); | |
937 | continue; | |
938 | } | |
939 | else | |
940 | { | |
941 | printf("Enexpected EOF read\n"); | |
942 | close(sock); | |
943 | exit(80); | |
944 | } | |
945 | else if (exp_eof) | |
c55a77db | 946 | { |
5ddc9771 | 947 | printf("Expected EOF not read\n"); |
c55a77db | 948 | close(sock); |
5ddc9771 | 949 | exit(74); |
c55a77db PH |
950 | } |
951 | else | |
952 | { | |
953 | inbuffer[rc] = 0; | |
954 | inptr = inbuffer; | |
955 | } | |
956 | } | |
957 | ||
958 | lineptr = inptr; | |
959 | while (*inptr != 0 && *inptr != '\r' && *inptr != '\n') inptr++; | |
960 | if (*inptr != 0) | |
961 | { | |
962 | *inptr++ = 0; | |
963 | if (*inptr == '\n') inptr++; | |
964 | } | |
965 | ||
966 | printf("<<< %s\n", lineptr); | |
a719fce4 | 967 | if (strncmp(CS lineptr, CS outbuffer + 4, (int)strlen(CS outbuffer) - 4) != 0) |
c55a77db PH |
968 | { |
969 | printf("\n******** Input mismatch ********\n"); | |
9ff403f8 | 970 | exit(79); |
c55a77db PH |
971 | } |
972 | ||
973 | #ifdef HAVE_TLS | |
974 | if (sent_starttls) | |
975 | { | |
976 | if (lineptr[0] == '2') | |
977 | { | |
2b4a568d JH |
978 | int rc; |
979 | unsigned int verify; | |
980 | ||
c55a77db PH |
981 | printf("Attempting to start TLS\n"); |
982 | fflush(stdout); | |
983 | ||
984 | #ifdef HAVE_OPENSSL | |
985 | tls_active = tls_start(sock, &ssl, ctx); | |
986 | #endif | |
987 | ||
988 | #ifdef HAVE_GNUTLS | |
fc4fcc34 JH |
989 | { |
990 | int rc; | |
991 | sigalrm_seen = FALSE; | |
992 | alarm(timeout); | |
993 | do { | |
994 | rc = gnutls_handshake(tls_session); | |
995 | } while (rc < 0 && gnutls_error_is_fatal(rc) == 0); | |
996 | tls_active = rc >= 0; | |
997 | alarm(0); | |
998 | ||
999 | if (!tls_active) printf("%s\n", gnutls_strerror(rc)); | |
1000 | } | |
c55a77db PH |
1001 | #endif |
1002 | ||
1003 | if (!tls_active) | |
1004 | { | |
1005 | printf("Failed to start TLS\n"); | |
1006 | fflush(stdout); | |
1007 | } | |
2b4a568d JH |
1008 | #ifdef HAVE_GNUTLS |
1009 | else if (ocsp_stapling) | |
1010 | { | |
1011 | if ((rc= gnutls_certificate_verify_peers2(tls_session, &verify)) < 0) | |
1012 | { | |
1013 | printf("Failed to verify certificate: %s\n", gnutls_strerror(rc)); | |
1014 | fflush(stdout); | |
1015 | } | |
1016 | else if (verify & (GNUTLS_CERT_INVALID|GNUTLS_CERT_REVOKED)) | |
1017 | { | |
1018 | printf("Bad certificate\n"); | |
1019 | fflush(stdout); | |
1020 | } | |
348051ad | 1021 | #ifdef HAVE_OCSP |
2b4a568d JH |
1022 | else if (gnutls_ocsp_status_request_is_checked(tls_session, 0) == 0) |
1023 | { | |
1024 | printf("Failed to verify certificate status\n"); | |
1025 | { | |
1026 | gnutls_datum_t stapling; | |
1027 | gnutls_ocsp_resp_t resp; | |
1028 | gnutls_datum_t printed; | |
1029 | if ( (rc= gnutls_ocsp_status_request_get(tls_session, &stapling)) == 0 | |
1030 | && (rc= gnutls_ocsp_resp_init(&resp)) == 0 | |
1031 | && (rc= gnutls_ocsp_resp_import(resp, &stapling)) == 0 | |
1032 | && (rc= gnutls_ocsp_resp_print(resp, GNUTLS_OCSP_PRINT_FULL, &printed)) == 0 | |
1033 | ) | |
1034 | { | |
1035 | fprintf(stderr, "%.4096s", printed.data); | |
1036 | gnutls_free(printed.data); | |
1037 | } | |
1038 | else | |
1039 | (void) fprintf(stderr,"ocsp decode: %s", gnutls_strerror(rc)); | |
1040 | } | |
1041 | fflush(stdout); | |
1042 | } | |
348051ad | 1043 | #endif |
2b4a568d JH |
1044 | } |
1045 | #endif | |
c55a77db PH |
1046 | else |
1047 | printf("Succeeded in starting TLS\n"); | |
1048 | } | |
1049 | else printf("Abandoning TLS start attempt\n"); | |
1050 | } | |
1051 | sent_starttls = 0; | |
1052 | #endif | |
1053 | } | |
1054 | ||
1055 | /* Wait for a bit before proceeding */ | |
1056 | ||
a719fce4 | 1057 | else if (strncmp(CS outbuffer, "+++ ", 4) == 0) |
c55a77db PH |
1058 | { |
1059 | printf("%s\n", outbuffer); | |
a719fce4 | 1060 | sleep(atoi(CS outbuffer + 4)); |
c55a77db PH |
1061 | } |
1062 | ||
1063 | /* Send outgoing, but barf if unconsumed incoming */ | |
1064 | ||
1065 | else | |
1066 | { | |
1067 | unsigned char *escape; | |
1068 | ||
1069 | if (*inptr != 0) | |
1070 | { | |
1071 | printf("Unconsumed input: %s", inptr); | |
1072 | printf(" About to send: %s\n", outbuffer); | |
9ff403f8 | 1073 | exit(78); |
c55a77db PH |
1074 | } |
1075 | ||
1076 | #ifdef HAVE_TLS | |
1077 | ||
1078 | /* Shutdown TLS */ | |
1079 | ||
e265af1f JH |
1080 | if (strcmp(CS outbuffer, "stoptls") == 0 || |
1081 | strcmp(CS outbuffer, "STOPTLS") == 0) | |
c55a77db PH |
1082 | { |
1083 | if (!tls_active) | |
1084 | { | |
1085 | printf("STOPTLS read when TLS not active\n"); | |
9ff403f8 | 1086 | exit(77); |
c55a77db PH |
1087 | } |
1088 | printf("Shutting down TLS encryption\n"); | |
1089 | ||
1090 | #ifdef HAVE_OPENSSL | |
1091 | SSL_shutdown(ssl); | |
1092 | SSL_free(ssl); | |
1093 | #endif | |
1094 | ||
1095 | #ifdef HAVE_GNUTLS | |
1096 | gnutls_bye(tls_session, GNUTLS_SHUT_WR); | |
1097 | gnutls_deinit(tls_session); | |
1098 | tls_session = NULL; | |
1099 | gnutls_global_deinit(); | |
1100 | #endif | |
1101 | ||
1102 | tls_active = 0; | |
1103 | continue; | |
1104 | } | |
1105 | ||
1106 | /* Remember that we sent STARTTLS */ | |
1107 | ||
e265af1f JH |
1108 | sent_starttls = (strcmp(CS outbuffer, "starttls") == 0 || |
1109 | strcmp(CS outbuffer, "STARTTLS") == 0); | |
c55a77db PH |
1110 | |
1111 | /* Fudge: if the command is "starttls_wait", we send the starttls bit, | |
1112 | but we haven't set the flag, so that there is no negotiation. This is for | |
1113 | testing the server's timeout. */ | |
1114 | ||
e265af1f | 1115 | if (strcmp(CS outbuffer, "starttls_wait") == 0) |
c55a77db PH |
1116 | { |
1117 | outbuffer[8] = 0; | |
1118 | n = 8; | |
1119 | } | |
1120 | #endif | |
1121 | ||
1122 | printf(">>> %s\n", outbuffer); | |
a719fce4 | 1123 | strcpy(CS outbuffer + n, "\r\n"); |
c55a77db PH |
1124 | |
1125 | /* Turn "\n" and "\r" into the relevant characters. This is a hack. */ | |
1126 | ||
a719fce4 | 1127 | while ((escape = US strstr(CS outbuffer, "\\r")) != NULL) |
c55a77db PH |
1128 | { |
1129 | *escape = '\r'; | |
1130 | memmove(escape + 1, escape + 2, (n + 2) - (escape - outbuffer) - 2); | |
1131 | n--; | |
1132 | } | |
1133 | ||
e265af1f | 1134 | while ((escape = US strstr(CS outbuffer, "\\n")) != NULL) |
c55a77db PH |
1135 | { |
1136 | *escape = '\n'; | |
1137 | memmove(escape + 1, escape + 2, (n + 2) - (escape - outbuffer) - 2); | |
1138 | n--; | |
1139 | } | |
1140 | ||
1141 | /* OK, do it */ | |
1142 | ||
1143 | alarm(timeout); | |
1144 | if (tls_active) | |
1145 | { | |
1146 | #ifdef HAVE_OPENSSL | |
1147 | rc = SSL_write (ssl, outbuffer, n + 2); | |
1148 | #endif | |
1149 | #ifdef HAVE_GNUTLS | |
1150 | rc = gnutls_record_send(tls_session, CS outbuffer, n + 2); | |
1151 | if (rc < 0) | |
1152 | { | |
1153 | printf("GnuTLS write error: %s\n", gnutls_strerror(rc)); | |
9ff403f8 | 1154 | exit(76); |
c55a77db PH |
1155 | } |
1156 | #endif | |
1157 | } | |
1158 | else | |
1159 | { | |
1160 | rc = write(sock, outbuffer, n + 2); | |
1161 | } | |
1162 | alarm(0); | |
1163 | ||
1164 | if (rc < 0) | |
1165 | { | |
1166 | printf("Write error: %s\n", strerror(errno)); | |
9ff403f8 | 1167 | exit(75); |
c55a77db PH |
1168 | } |
1169 | } | |
1170 | } | |
1171 | ||
1172 | printf("End of script\n"); | |
60d10ce7 JH |
1173 | shutdown(sock, SHUT_WR); |
1174 | while ((rc = read(sock, inbuffer, sizeof(inbuffer))) > 0) ; | |
c55a77db PH |
1175 | close(sock); |
1176 | ||
1177 | exit(0); | |
1178 | } | |
1179 | ||
1180 | /* End of client.c */ |