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 | |
3b3634d0 | 169 | # ifndef DISABLE_OCSP |
f5d78688 | 170 | |
ee5b1e28 | 171 | static STACK_OF(X509) * |
3b3634d0 | 172 | chain_from_pem_file(const uschar * file) |
ee5b1e28 | 173 | { |
3b3634d0 JH |
174 | BIO * bp; |
175 | X509 * x; | |
176 | STACK_OF(X509) * sk; | |
ee5b1e28 | 177 | |
3b3634d0 JH |
178 | if (!(sk = sk_X509_new_null())) return NULL; |
179 | if (!(bp = BIO_new_file(CS file, "r"))) return NULL; | |
180 | while ((x = PEM_read_bio_X509(bp, NULL, 0, NULL))) | |
181 | sk_X509_push(sk, x); | |
182 | BIO_free(bp); | |
ee5b1e28 JH |
183 | return sk; |
184 | } | |
185 | ||
3b3634d0 JH |
186 | |
187 | ||
ee5b1e28 JH |
188 | static void |
189 | cert_stack_free(STACK_OF(X509) * sk) | |
190 | { | |
191 | while (sk_X509_num(sk) > 0) (void) sk_X509_pop(sk); | |
192 | sk_X509_free(sk); | |
193 | } | |
194 | ||
195 | ||
f5d78688 JH |
196 | static int |
197 | tls_client_stapling_cb(SSL *s, void *arg) | |
198 | { | |
199 | const unsigned char *p; | |
200 | int len; | |
201 | OCSP_RESPONSE *rsp; | |
202 | OCSP_BASICRESP *bs; | |
ee5b1e28 | 203 | STACK_OF(X509) * sk; |
f5d78688 JH |
204 | int ret = 1; |
205 | ||
206 | len = SSL_get_tlsext_status_ocsp_resp(s, &p); | |
207 | /*BIO_printf(arg, "OCSP response: ");*/ | |
208 | if (!p) | |
209 | { | |
210 | BIO_printf(arg, "no response received\n"); | |
211 | return 1; | |
212 | } | |
213 | if(!(rsp = d2i_OCSP_RESPONSE(NULL, &p, len))) | |
214 | { | |
215 | BIO_printf(arg, "response parse error\n"); | |
216 | BIO_dump_indent(arg, (char *)p, len, 4); | |
217 | return 0; | |
218 | } | |
219 | if(!(bs = OCSP_response_get1_basic(rsp))) | |
220 | { | |
221 | BIO_printf(arg, "error parsing response\n"); | |
222 | return 0; | |
223 | } | |
224 | ||
ee5b1e28 | 225 | |
3b3634d0 | 226 | if (!(sk = chain_from_pem_file(ocsp_stapling))) |
f5d78688 JH |
227 | { |
228 | BIO_printf(arg, "error in cert setup\n"); | |
229 | return 0; | |
230 | } | |
231 | ||
ee5b1e28 JH |
232 | /* OCSP_basic_verify takes a "store" arg, but does not |
233 | use it for the chain verification, which is all we do | |
234 | when OCSP_NOVERIFY is set. The content from the wire | |
235 | (in "bs") and a cert-stack "sk" are all that is used. */ | |
236 | ||
237 | if(OCSP_basic_verify(bs, sk, NULL, OCSP_NOVERIFY) <= 0) | |
f5d78688 JH |
238 | { |
239 | BIO_printf(arg, "Response Verify Failure\n"); | |
240 | ERR_print_errors(arg); | |
241 | ret = 0; | |
242 | } | |
243 | else | |
244 | BIO_printf(arg, "Response verify OK\n"); | |
245 | ||
ee5b1e28 | 246 | cert_stack_free(sk); |
f5d78688 JH |
247 | return ret; |
248 | } | |
3b3634d0 | 249 | # endif /*DISABLE_OCSP*/ |
f5d78688 JH |
250 | |
251 | ||
c55a77db PH |
252 | /************************************************* |
253 | * Start an OpenSSL TLS session * | |
254 | *************************************************/ | |
255 | ||
2b4a568d JH |
256 | int |
257 | tls_start(int sock, SSL **ssl, SSL_CTX *ctx) | |
c55a77db PH |
258 | { |
259 | int rc; | |
57cde6e4 | 260 | static const unsigned char *sid_ctx = US"exim"; |
c55a77db PH |
261 | |
262 | RAND_load_file("client.c", -1); /* Not *very* random! */ | |
263 | ||
264 | *ssl = SSL_new (ctx); | |
57cde6e4 | 265 | SSL_set_session_id_context(*ssl, sid_ctx, strlen(CS sid_ctx)); |
c55a77db PH |
266 | SSL_set_fd (*ssl, sock); |
267 | SSL_set_connect_state(*ssl); | |
268 | ||
6d68e1c7 | 269 | #ifndef DISABLE_OCSP |
f5d78688 JH |
270 | if (ocsp_stapling) |
271 | { | |
272 | SSL_CTX_set_tlsext_status_cb(ctx, tls_client_stapling_cb); | |
273 | SSL_CTX_set_tlsext_status_arg(ctx, BIO_new_fp(stdout, BIO_NOCLOSE)); | |
274 | SSL_set_tlsext_status_type(*ssl, TLSEXT_STATUSTYPE_ocsp); | |
275 | } | |
6d68e1c7 | 276 | #endif |
f5d78688 | 277 | |
c55a77db PH |
278 | signal(SIGALRM, sigalrm_handler_flag); |
279 | sigalrm_seen = 0; | |
280 | alarm(5); | |
281 | rc = SSL_connect (*ssl); | |
282 | alarm(0); | |
283 | ||
284 | if (sigalrm_seen) | |
285 | { | |
286 | printf("SSL_connect timed out\n"); | |
287 | return 0; | |
288 | } | |
289 | ||
290 | if (rc <= 0) | |
291 | { | |
292 | ERR_print_errors_fp(stdout); | |
293 | return 0; | |
294 | } | |
295 | ||
296 | printf("SSL connection using %s\n", SSL_get_cipher (*ssl)); | |
297 | return 1; | |
298 | } | |
299 | ||
300 | ||
301 | /************************************************* | |
302 | * SSL Information callback * | |
303 | *************************************************/ | |
304 | ||
305 | static void | |
306 | info_callback(SSL *s, int where, int ret) | |
307 | { | |
308 | where = where; | |
309 | ret = ret; | |
310 | printf("SSL info: %s\n", SSL_state_string_long(s)); | |
311 | } | |
312 | #endif | |
313 | ||
314 | ||
315 | /****************************************************************************/ | |
316 | /****************************************************************************/ | |
317 | ||
318 | ||
319 | #ifdef HAVE_GNUTLS | |
320 | /************************************************* | |
321 | * Handle GnuTLS error * | |
322 | *************************************************/ | |
323 | ||
324 | /* Called from lots of places when errors occur before actually starting to do | |
325 | the TLS handshake, that is, while the session is still in clear. | |
326 | ||
327 | Argument: | |
328 | prefix prefix text | |
329 | err a GnuTLS error number, or 0 if local error | |
330 | ||
331 | Returns: doesn't - it dies | |
332 | */ | |
333 | ||
334 | static void | |
335 | gnutls_error(uschar *prefix, int err) | |
336 | { | |
bb727765 | 337 | fprintf(stderr, "GnuTLS connection error: %s:", prefix); |
c55a77db PH |
338 | if (err != 0) fprintf(stderr, " %s", gnutls_strerror(err)); |
339 | fprintf(stderr, "\n"); | |
9ff403f8 | 340 | exit(98); |
c55a77db PH |
341 | } |
342 | ||
343 | ||
344 | ||
345 | /************************************************* | |
bb727765 | 346 | * Setup up DH parameters * |
c55a77db PH |
347 | *************************************************/ |
348 | ||
349 | /* For the test suite, the parameters should always be available in the spool | |
350 | directory. */ | |
351 | ||
352 | static void | |
bb727765 | 353 | init_dh(void) |
c55a77db PH |
354 | { |
355 | int fd; | |
356 | int ret; | |
fc4fcc34 | 357 | gnutls_datum_t m; |
c55a77db PH |
358 | uschar filename[200]; |
359 | struct stat statbuf; | |
360 | ||
361 | /* Initialize the data structures for holding the parameters */ | |
362 | ||
c55a77db PH |
363 | ret = gnutls_dh_params_init(&dh_params); |
364 | if (ret < 0) gnutls_error(US"init dh_params", ret); | |
365 | ||
366 | /* Open the cache file for reading and if successful, read it and set up the | |
bb727765 | 367 | parameters. */ |
c55a77db PH |
368 | |
369 | fd = open("aux-fixed/gnutls-params", O_RDONLY, 0); | |
370 | if (fd < 0) | |
371 | { | |
372 | fprintf(stderr, "Failed to open spool/gnutls-params: %s\n", strerror(errno)); | |
9ff403f8 | 373 | exit(97); |
c55a77db PH |
374 | } |
375 | ||
376 | if (fstat(fd, &statbuf) < 0) | |
377 | { | |
378 | (void)close(fd); | |
379 | return gnutls_error(US"TLS cache stat failed", 0); | |
380 | } | |
381 | ||
382 | m.size = statbuf.st_size; | |
383 | m.data = malloc(m.size); | |
384 | if (m.data == NULL) | |
385 | return gnutls_error(US"memory allocation failed", 0); | |
386 | if (read(fd, m.data, m.size) != m.size) | |
387 | return gnutls_error(US"TLS cache read failed", 0); | |
388 | (void)close(fd); | |
389 | ||
c55a77db PH |
390 | ret = gnutls_dh_params_import_pkcs3(dh_params, &m, GNUTLS_X509_FMT_PEM); |
391 | if (ret < 0) return gnutls_error(US"DH params import", ret); | |
392 | free(m.data); | |
393 | } | |
394 | ||
395 | ||
396 | ||
397 | ||
398 | /************************************************* | |
399 | * Initialize for GnuTLS * | |
400 | *************************************************/ | |
401 | ||
402 | /* | |
403 | Arguments: | |
404 | certificate certificate file | |
405 | privatekey private key file | |
406 | */ | |
407 | ||
408 | static void | |
409 | tls_init(uschar *certificate, uschar *privatekey) | |
410 | { | |
411 | int rc; | |
412 | ||
413 | rc = gnutls_global_init(); | |
414 | if (rc < 0) gnutls_error(US"gnutls_global_init", rc); | |
415 | ||
bb727765 | 416 | /* Read D-H parameters from the cache file. */ |
c55a77db | 417 | |
bb727765 | 418 | init_dh(); |
c55a77db PH |
419 | |
420 | /* Create the credentials structure */ | |
421 | ||
422 | rc = gnutls_certificate_allocate_credentials(&x509_cred); | |
423 | if (rc < 0) gnutls_error(US"certificate_allocate_credentials", rc); | |
424 | ||
425 | /* Set the certificate and private keys */ | |
426 | ||
427 | if (certificate != NULL) | |
428 | { | |
429 | rc = gnutls_certificate_set_x509_key_file(x509_cred, CS certificate, | |
430 | CS privatekey, GNUTLS_X509_FMT_PEM); | |
431 | if (rc < 0) gnutls_error("gnutls_certificate", rc); | |
432 | } | |
433 | ||
434 | /* Associate the parameters with the x509 credentials structure. */ | |
435 | ||
436 | gnutls_certificate_set_dh_params(x509_cred, dh_params); | |
2b4a568d JH |
437 | |
438 | /* set the CA info for server-cert verify */ | |
439 | if (ocsp_stapling) | |
440 | gnutls_certificate_set_x509_trust_file(x509_cred, ocsp_stapling, | |
441 | GNUTLS_X509_FMT_PEM); | |
c55a77db PH |
442 | } |
443 | ||
444 | ||
445 | ||
446 | /************************************************* | |
447 | * Initialize a single GNUTLS session * | |
448 | *************************************************/ | |
449 | ||
fc4fcc34 | 450 | static gnutls_session_t |
c55a77db PH |
451 | tls_session_init(void) |
452 | { | |
fc4fcc34 | 453 | gnutls_session_t session; |
c55a77db | 454 | |
0886a95e | 455 | gnutls_init(&session, GNUTLS_CLIENT | GNUTLS_NO_EXTENSIONS); |
c55a77db | 456 | |
fc4fcc34 | 457 | #if GNUTLS_VERSION_NUMBER < 0x030400 |
c55a77db PH |
458 | gnutls_cipher_set_priority(session, default_cipher_priority); |
459 | gnutls_compression_set_priority(session, comp_priority); | |
460 | gnutls_kx_set_priority(session, kx_priority); | |
461 | gnutls_protocol_set_priority(session, protocol_priority); | |
462 | gnutls_mac_set_priority(session, mac_priority); | |
463 | ||
464 | gnutls_cred_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred); | |
fc4fcc34 JH |
465 | #else |
466 | gnutls_set_default_priority(session); | |
467 | gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred); | |
468 | #endif | |
c55a77db PH |
469 | |
470 | gnutls_dh_set_prime_bits(session, DH_BITS); | |
471 | gnutls_db_set_cache_expiration(session, ssl_session_timeout); | |
472 | ||
473 | return session; | |
474 | } | |
475 | #endif | |
476 | ||
477 | ||
478 | /****************************************************************************/ | |
5d036699 JH |
479 | /* Turn "\n" and "\r" into the relevant characters. This is a hack. */ |
480 | ||
481 | static int | |
482 | unescape_buf(unsigned char * buf, int len) | |
483 | { | |
484 | unsigned char * s; | |
485 | unsigned char c, t; | |
486 | unsigned shift; | |
487 | ||
488 | for (s = buf; s < buf+len; s++) if (*s == '\\') | |
489 | { | |
490 | switch (s[1]) | |
491 | { | |
492 | default: c = s[1]; shift = 1; break; | |
493 | case 'n': c = '\n'; shift = 1; break; | |
494 | case 'r': c = '\r'; shift = 1; break; | |
495 | case 'x': | |
496 | t = s[2]; | |
497 | if (t >= 'A' && t <= 'F') t -= 'A'-'9'-1; | |
498 | else if (t >= 'a' && t <= 'f') t -= 'a'-'9'-1; | |
499 | t -= '0'; | |
500 | c = (t<<4) & 0xf0; | |
501 | t = s[3]; | |
502 | if (t >= 'A' && t <= 'F') t -= 'A'-'9'-1; | |
503 | else if (t >= 'a' && t <= 'f') t -= 'a'-'9'-1; | |
504 | t -= '0'; | |
505 | c |= t & 0xf; | |
506 | shift = 3; | |
507 | break; | |
508 | } | |
509 | *s = c; | |
510 | memmove(s+1, s+shift+1, len-shift); | |
511 | len -= shift; | |
512 | } | |
513 | return len; | |
514 | } | |
515 | ||
516 | ||
c55a77db PH |
517 | /****************************************************************************/ |
518 | ||
519 | ||
520 | ||
521 | ||
522 | /************************************************* | |
523 | * Main Program * | |
524 | *************************************************/ | |
525 | ||
4fe99a6c | 526 | const char * const HELP_MESSAGE = "\n\ |
972e83f5 HSHR |
527 | Usage: client\n" |
528 | #ifdef HAVE_TLS | |
529 | "\ | |
530 | [-tls-on-connect]\n\ | |
531 | [-ocsp]\n" | |
532 | #endif | |
533 | "\ | |
534 | [-tn] n seconds timeout\n\ | |
4fe99a6c PP |
535 | <IP address>\n\ |
536 | <port>\n\ | |
537 | [<outgoing interface>]\n\ | |
538 | [<cert file>]\n\ | |
539 | [<key file>]\n\ | |
540 | \n"; | |
c55a77db | 541 | |
5d036699 JH |
542 | int |
543 | main(int argc, char **argv) | |
c55a77db PH |
544 | { |
545 | struct sockaddr *s_ptr; | |
546 | struct sockaddr_in s_in4; | |
547 | char *interface = NULL; | |
548 | char *address = NULL; | |
549 | char *certfile = NULL; | |
550 | char *keyfile = NULL; | |
1ec3f27d | 551 | char *end = NULL; |
c55a77db PH |
552 | int argi = 1; |
553 | int host_af, port, s_len, rc, sock, save_errno; | |
d528a389 | 554 | int timeout = 5; |
c55a77db PH |
555 | int tls_active = 0; |
556 | int sent_starttls = 0; | |
557 | int tls_on_connect = 0; | |
1ec3f27d | 558 | long tmplong; |
c55a77db PH |
559 | |
560 | #if HAVE_IPV6 | |
561 | struct sockaddr_in6 s_in6; | |
562 | #endif | |
563 | ||
564 | #ifdef HAVE_OPENSSL | |
565 | SSL_CTX* ctx; | |
566 | SSL* ssl; | |
567 | #endif | |
568 | ||
569 | unsigned char outbuffer[10240]; | |
570 | unsigned char inbuffer[10240]; | |
571 | unsigned char *inptr = inbuffer; | |
572 | ||
573 | *inptr = 0; /* Buffer empty */ | |
574 | ||
575 | /* Options */ | |
576 | ||
577 | while (argc >= argi + 1 && argv[argi][0] == '-') | |
578 | { | |
4fe99a6c PP |
579 | if (strcmp(argv[argi], "-help") == 0 || |
580 | strcmp(argv[argi], "--help") == 0 || | |
581 | strcmp(argv[argi], "-h") == 0) | |
582 | { | |
dd4c8678 | 583 | puts(HELP_MESSAGE); |
4fe99a6c PP |
584 | exit(0); |
585 | } | |
c55a77db PH |
586 | if (strcmp(argv[argi], "-tls-on-connect") == 0) |
587 | { | |
588 | tls_on_connect = 1; | |
589 | argi++; | |
590 | } | |
2b4a568d | 591 | #ifdef HAVE_TLS |
f5d78688 JH |
592 | else if (strcmp(argv[argi], "-ocsp") == 0) |
593 | { | |
594 | if (argc < ++argi + 1) | |
595 | { | |
596 | fprintf(stderr, "Missing required certificate file for ocsp option\n"); | |
9ff403f8 | 597 | exit(96); |
f5d78688 JH |
598 | } |
599 | ocsp_stapling = argv[argi++]; | |
600 | } | |
2b4a568d | 601 | |
f5d78688 | 602 | #endif |
c55a77db PH |
603 | else if (argv[argi][1] == 't' && isdigit(argv[argi][2])) |
604 | { | |
1ec3f27d PP |
605 | tmplong = strtol(argv[argi]+2, &end, 10); |
606 | if (end == argv[argi]+2 || *end) | |
607 | { | |
608 | fprintf(stderr, "Failed to parse seconds from option <%s>\n", | |
609 | argv[argi]); | |
9ff403f8 | 610 | exit(95); |
1ec3f27d PP |
611 | } |
612 | if (tmplong > 10000L) | |
613 | { | |
dd4c8678 | 614 | fprintf(stderr, "Unreasonably long wait of %ld seconds requested\n", |
1ec3f27d | 615 | tmplong); |
9ff403f8 | 616 | exit(94); |
1ec3f27d PP |
617 | } |
618 | if (tmplong < 0L) | |
619 | { | |
dd4c8678 | 620 | fprintf(stderr, "Timeout must not be negative (%ld)\n", tmplong); |
9ff403f8 | 621 | exit(93); |
1ec3f27d PP |
622 | } |
623 | timeout = (int) tmplong; | |
c55a77db PH |
624 | argi++; |
625 | } | |
626 | else | |
627 | { | |
1ec3f27d | 628 | fprintf(stderr, "Unrecognized option %s\n", argv[argi]); |
9ff403f8 | 629 | exit(92); |
c55a77db PH |
630 | } |
631 | } | |
632 | ||
633 | /* Mandatory 1st arg is IP address */ | |
634 | ||
635 | if (argc < argi+1) | |
636 | { | |
1ec3f27d | 637 | fprintf(stderr, "No IP address given\n"); |
9ff403f8 | 638 | exit(91); |
c55a77db PH |
639 | } |
640 | ||
641 | address = argv[argi++]; | |
642 | host_af = (strchr(address, ':') != NULL)? AF_INET6 : AF_INET; | |
643 | ||
644 | /* Mandatory 2nd arg is port */ | |
645 | ||
646 | if (argc < argi+1) | |
647 | { | |
1ec3f27d | 648 | fprintf(stderr, "No port number given\n"); |
9ff403f8 | 649 | exit(90); |
c55a77db PH |
650 | } |
651 | ||
652 | port = atoi(argv[argi++]); | |
653 | ||
654 | /* Optional next arg is interface */ | |
655 | ||
656 | if (argc > argi && | |
657 | (isdigit((unsigned char)argv[argi][0]) || argv[argi][0] == ':')) | |
658 | interface = argv[argi++]; | |
659 | ||
660 | /* Any more arguments are the name of a certificate file and key file */ | |
661 | ||
662 | if (argc > argi) certfile = argv[argi++]; | |
663 | if (argc > argi) keyfile = argv[argi++]; | |
664 | ||
665 | ||
666 | #if HAVE_IPV6 | |
667 | /* For an IPv6 address, use an IPv6 sockaddr structure. */ | |
668 | ||
669 | if (host_af == AF_INET6) | |
670 | { | |
671 | s_ptr = (struct sockaddr *)&s_in6; | |
672 | s_len = sizeof(s_in6); | |
673 | } | |
674 | else | |
675 | #endif | |
676 | ||
677 | /* For an IPv4 address, use an IPv4 sockaddr structure, | |
678 | even on an IPv6 system. */ | |
679 | ||
680 | { | |
681 | s_ptr = (struct sockaddr *)&s_in4; | |
682 | s_len = sizeof(s_in4); | |
683 | } | |
684 | ||
685 | printf("Connecting to %s port %d ... ", address, port); | |
686 | ||
687 | sock = socket(host_af, SOCK_STREAM, 0); | |
688 | if (sock < 0) | |
689 | { | |
690 | printf("socket creation failed: %s\n", strerror(errno)); | |
9ff403f8 | 691 | exit(89); |
c55a77db PH |
692 | } |
693 | ||
694 | /* Bind to a specific interface if requested. On an IPv6 system, this has | |
695 | to be of the same family as the address we are calling. On an IPv4 system the | |
696 | test is redundant, but it keeps the code tidier. */ | |
697 | ||
698 | if (interface != NULL) | |
699 | { | |
700 | int interface_af = (strchr(interface, ':') != NULL)? AF_INET6 : AF_INET; | |
701 | ||
702 | if (interface_af == host_af) | |
703 | { | |
704 | #if HAVE_IPV6 | |
705 | ||
706 | /* Set up for IPv6 binding */ | |
707 | ||
708 | if (host_af == AF_INET6) | |
709 | { | |
710 | memset(&s_in6, 0, sizeof(s_in6)); | |
711 | s_in6.sin6_family = AF_INET6; | |
712 | s_in6.sin6_port = 0; | |
713 | if (inet_pton(AF_INET6, interface, &s_in6.sin6_addr) != 1) | |
714 | { | |
715 | printf("Unable to parse \"%s\"", interface); | |
9ff403f8 | 716 | exit(88); |
c55a77db PH |
717 | } |
718 | } | |
719 | else | |
720 | #endif | |
721 | ||
722 | /* Set up for IPv4 binding */ | |
723 | ||
724 | { | |
725 | memset(&s_in4, 0, sizeof(s_in4)); | |
726 | s_in4.sin_family = AF_INET; | |
727 | s_in4.sin_port = 0; | |
728 | s_in4.sin_addr.s_addr = (S_ADDR_TYPE)inet_addr(interface); | |
729 | } | |
730 | ||
731 | /* Bind */ | |
732 | ||
733 | if (bind(sock, s_ptr, s_len) < 0) | |
734 | { | |
735 | printf("Unable to bind outgoing SMTP call to %s: %s", | |
736 | interface, strerror(errno)); | |
9ff403f8 | 737 | exit(87); |
c55a77db PH |
738 | } |
739 | } | |
740 | } | |
741 | ||
742 | /* Set up a remote IPv6 address */ | |
743 | ||
744 | #if HAVE_IPV6 | |
745 | if (host_af == AF_INET6) | |
746 | { | |
747 | memset(&s_in6, 0, sizeof(s_in6)); | |
748 | s_in6.sin6_family = AF_INET6; | |
749 | s_in6.sin6_port = htons(port); | |
750 | if (inet_pton(host_af, address, &s_in6.sin6_addr) != 1) | |
751 | { | |
752 | printf("Unable to parse \"%s\"", address); | |
9ff403f8 | 753 | exit(86); |
c55a77db PH |
754 | } |
755 | } | |
756 | else | |
757 | #endif | |
758 | ||
759 | /* Set up a remote IPv4 address */ | |
760 | ||
761 | { | |
762 | memset(&s_in4, 0, sizeof(s_in4)); | |
763 | s_in4.sin_family = AF_INET; | |
764 | s_in4.sin_port = htons(port); | |
765 | s_in4.sin_addr.s_addr = (S_ADDR_TYPE)inet_addr(address); | |
766 | } | |
767 | ||
768 | /* SIGALRM handler crashes out */ | |
769 | ||
770 | signal(SIGALRM, sigalrm_handler_crash); | |
771 | alarm(timeout); | |
772 | rc = connect(sock, s_ptr, s_len); | |
773 | save_errno = errno; | |
774 | alarm(0); | |
775 | ||
776 | /* A failure whose error code is "Interrupted system call" is in fact | |
777 | an externally applied timeout if the signal handler has been run. */ | |
778 | ||
779 | if (rc < 0) | |
780 | { | |
781 | close(sock); | |
41fdef91 | 782 | printf("connect failed: %s\n", strerror(save_errno)); |
9ff403f8 | 783 | exit(85); |
c55a77db PH |
784 | } |
785 | ||
786 | printf("connected\n"); | |
787 | ||
788 | ||
789 | /* --------------- Set up for OpenSSL --------------- */ | |
790 | ||
791 | #ifdef HAVE_OPENSSL | |
792 | SSL_library_init(); | |
793 | SSL_load_error_strings(); | |
794 | ||
795 | ctx = SSL_CTX_new(SSLv23_method()); | |
796 | if (ctx == NULL) | |
797 | { | |
798 | printf ("SSL_CTX_new failed\n"); | |
9ff403f8 | 799 | exit(84); |
c55a77db PH |
800 | } |
801 | ||
802 | if (certfile != NULL) | |
803 | { | |
804 | if (!SSL_CTX_use_certificate_file(ctx, certfile, SSL_FILETYPE_PEM)) | |
805 | { | |
806 | printf("SSL_CTX_use_certificate_file failed\n"); | |
9ff403f8 | 807 | exit(83); |
c55a77db PH |
808 | } |
809 | printf("Certificate file = %s\n", certfile); | |
810 | } | |
811 | ||
812 | if (keyfile != NULL) | |
813 | { | |
814 | if (!SSL_CTX_use_PrivateKey_file(ctx, keyfile, SSL_FILETYPE_PEM)) | |
815 | { | |
816 | printf("SSL_CTX_use_PrivateKey_file failed\n"); | |
9ff403f8 | 817 | exit(82); |
c55a77db PH |
818 | } |
819 | printf("Key file = %s\n", keyfile); | |
820 | } | |
821 | ||
822 | SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_BOTH); | |
823 | SSL_CTX_set_timeout(ctx, 200); | |
824 | SSL_CTX_set_info_callback(ctx, (void (*)())info_callback); | |
825 | #endif | |
826 | ||
827 | ||
828 | /* --------------- Set up for GnuTLS --------------- */ | |
829 | ||
830 | #ifdef HAVE_GNUTLS | |
831 | if (certfile != NULL) printf("Certificate file = %s\n", certfile); | |
832 | if (keyfile != NULL) printf("Key file = %s\n", keyfile); | |
833 | tls_init(certfile, keyfile); | |
834 | tls_session = tls_session_init(); | |
348051ad | 835 | #ifdef HAVE_OCSP |
2b4a568d JH |
836 | if (ocsp_stapling) |
837 | gnutls_ocsp_status_request_enable_client(tls_session, NULL, 0, NULL); | |
348051ad | 838 | #endif |
fc4fcc34 | 839 | gnutls_transport_set_ptr(tls_session, (gnutls_transport_ptr_t)(intptr_t)sock); |
c55a77db PH |
840 | |
841 | /* When the server asks for a certificate and the client does not have one, | |
842 | there is a SIGPIPE error in the gnutls_handshake() function for some reason | |
843 | that is not understood. As luck would have it, this has never hit Exim itself | |
844 | because it ignores SIGPIPE errors. Doing the same here allows it all to work as | |
845 | one wants. */ | |
846 | ||
847 | signal(SIGPIPE, SIG_IGN); | |
848 | #endif | |
849 | ||
850 | /* ---------------------------------------------- */ | |
851 | ||
852 | ||
853 | /* Start TLS session if configured to do so without STARTTLS */ | |
854 | ||
855 | #ifdef HAVE_TLS | |
856 | if (tls_on_connect) | |
857 | { | |
858 | printf("Attempting to start TLS\n"); | |
859 | ||
fc4fcc34 | 860 | #ifdef HAVE_OPENSSL |
c55a77db | 861 | tls_active = tls_start(sock, &ssl, ctx); |
fc4fcc34 | 862 | #endif |
c55a77db | 863 | |
fc4fcc34 JH |
864 | #ifdef HAVE_GNUTLS |
865 | { | |
866 | int rc; | |
c55a77db PH |
867 | sigalrm_seen = FALSE; |
868 | alarm(timeout); | |
fc4fcc34 JH |
869 | do { |
870 | rc = gnutls_handshake(tls_session); | |
871 | } while (rc < 0 && gnutls_error_is_fatal(rc) == 0); | |
872 | tls_active = rc >= 0; | |
c55a77db | 873 | alarm(0); |
fc4fcc34 JH |
874 | |
875 | if (!tls_active) printf("%s\n", gnutls_strerror(rc)); | |
876 | } | |
877 | #endif | |
c55a77db PH |
878 | |
879 | if (!tls_active) | |
880 | printf("Failed to start TLS\n"); | |
fc4fcc34 | 881 | #if defined(HAVE_GNUTLS) && defined(HAVE_OCSP) |
2b4a568d JH |
882 | else if ( ocsp_stapling |
883 | && gnutls_ocsp_status_request_is_checked(tls_session, 0) == 0) | |
884 | printf("Failed to verify certificate status\n"); | |
fc4fcc34 | 885 | #endif |
c55a77db PH |
886 | else |
887 | printf("Succeeded in starting TLS\n"); | |
888 | } | |
889 | #endif | |
890 | ||
a719fce4 | 891 | while (fgets(CS outbuffer, sizeof(outbuffer), stdin) != NULL) |
c55a77db | 892 | { |
a719fce4 | 893 | int n = (int)strlen(CS outbuffer); |
5d036699 | 894 | int crlf = 1; |
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 | 908 | printf("%s\n", outbuffer); |
5d036699 | 909 | n = unescape_buf(outbuffer, n); |
c55a77db PH |
910 | |
911 | if (*inptr == 0) /* Refill input buffer */ | |
912 | { | |
913 | if (tls_active) | |
914 | { | |
915 | #ifdef HAVE_OPENSSL | |
916 | rc = SSL_read (ssl, inbuffer, sizeof(inbuffer) - 1); | |
917 | #endif | |
918 | #ifdef HAVE_GNUTLS | |
919 | rc = gnutls_record_recv(tls_session, CS inbuffer, sizeof(inbuffer) - 1); | |
920 | #endif | |
921 | } | |
922 | else | |
923 | { | |
924 | alarm(timeout); | |
925 | rc = read(sock, inbuffer, sizeof(inbuffer)); | |
926 | alarm(0); | |
927 | } | |
928 | ||
929 | if (rc < 0) | |
5ddc9771 | 930 | { |
c55a77db | 931 | printf("Read error %s\n", strerror(errno)); |
5ddc9771 JH |
932 | exit(81); |
933 | } | |
c55a77db | 934 | else if (rc == 0) |
5ddc9771 JH |
935 | if (exp_eof) |
936 | { | |
937 | printf("Expected EOF read\n"); | |
938 | continue; | |
939 | } | |
940 | else | |
941 | { | |
942 | printf("Enexpected EOF read\n"); | |
943 | close(sock); | |
944 | exit(80); | |
945 | } | |
946 | else if (exp_eof) | |
c55a77db | 947 | { |
5ddc9771 | 948 | printf("Expected EOF not read\n"); |
c55a77db | 949 | close(sock); |
5ddc9771 | 950 | exit(74); |
c55a77db PH |
951 | } |
952 | else | |
953 | { | |
954 | inbuffer[rc] = 0; | |
955 | inptr = inbuffer; | |
956 | } | |
957 | } | |
958 | ||
959 | lineptr = inptr; | |
960 | while (*inptr != 0 && *inptr != '\r' && *inptr != '\n') inptr++; | |
961 | if (*inptr != 0) | |
962 | { | |
963 | *inptr++ = 0; | |
964 | if (*inptr == '\n') inptr++; | |
965 | } | |
966 | ||
967 | printf("<<< %s\n", lineptr); | |
5d036699 | 968 | if (strncmp(CS lineptr, CS outbuffer + 4, n - 4) != 0) |
c55a77db PH |
969 | { |
970 | printf("\n******** Input mismatch ********\n"); | |
9ff403f8 | 971 | exit(79); |
c55a77db PH |
972 | } |
973 | ||
974 | #ifdef HAVE_TLS | |
975 | if (sent_starttls) | |
976 | { | |
977 | if (lineptr[0] == '2') | |
978 | { | |
2b4a568d JH |
979 | int rc; |
980 | unsigned int verify; | |
981 | ||
c55a77db PH |
982 | printf("Attempting to start TLS\n"); |
983 | fflush(stdout); | |
984 | ||
985 | #ifdef HAVE_OPENSSL | |
986 | tls_active = tls_start(sock, &ssl, ctx); | |
987 | #endif | |
988 | ||
989 | #ifdef HAVE_GNUTLS | |
fc4fcc34 JH |
990 | { |
991 | int rc; | |
992 | sigalrm_seen = FALSE; | |
993 | alarm(timeout); | |
994 | do { | |
995 | rc = gnutls_handshake(tls_session); | |
996 | } while (rc < 0 && gnutls_error_is_fatal(rc) == 0); | |
997 | tls_active = rc >= 0; | |
998 | alarm(0); | |
999 | ||
1000 | if (!tls_active) printf("%s\n", gnutls_strerror(rc)); | |
1001 | } | |
c55a77db PH |
1002 | #endif |
1003 | ||
1004 | if (!tls_active) | |
1005 | { | |
1006 | printf("Failed to start TLS\n"); | |
1007 | fflush(stdout); | |
1008 | } | |
2b4a568d JH |
1009 | #ifdef HAVE_GNUTLS |
1010 | else if (ocsp_stapling) | |
1011 | { | |
1012 | if ((rc= gnutls_certificate_verify_peers2(tls_session, &verify)) < 0) | |
1013 | { | |
1014 | printf("Failed to verify certificate: %s\n", gnutls_strerror(rc)); | |
1015 | fflush(stdout); | |
1016 | } | |
1017 | else if (verify & (GNUTLS_CERT_INVALID|GNUTLS_CERT_REVOKED)) | |
1018 | { | |
1019 | printf("Bad certificate\n"); | |
1020 | fflush(stdout); | |
1021 | } | |
348051ad | 1022 | #ifdef HAVE_OCSP |
2b4a568d JH |
1023 | else if (gnutls_ocsp_status_request_is_checked(tls_session, 0) == 0) |
1024 | { | |
1025 | printf("Failed to verify certificate status\n"); | |
1026 | { | |
1027 | gnutls_datum_t stapling; | |
1028 | gnutls_ocsp_resp_t resp; | |
1029 | gnutls_datum_t printed; | |
1030 | if ( (rc= gnutls_ocsp_status_request_get(tls_session, &stapling)) == 0 | |
1031 | && (rc= gnutls_ocsp_resp_init(&resp)) == 0 | |
1032 | && (rc= gnutls_ocsp_resp_import(resp, &stapling)) == 0 | |
1033 | && (rc= gnutls_ocsp_resp_print(resp, GNUTLS_OCSP_PRINT_FULL, &printed)) == 0 | |
1034 | ) | |
1035 | { | |
1036 | fprintf(stderr, "%.4096s", printed.data); | |
1037 | gnutls_free(printed.data); | |
1038 | } | |
1039 | else | |
1040 | (void) fprintf(stderr,"ocsp decode: %s", gnutls_strerror(rc)); | |
1041 | } | |
1042 | fflush(stdout); | |
1043 | } | |
348051ad | 1044 | #endif |
2b4a568d JH |
1045 | } |
1046 | #endif | |
c55a77db PH |
1047 | else |
1048 | printf("Succeeded in starting TLS\n"); | |
1049 | } | |
1050 | else printf("Abandoning TLS start attempt\n"); | |
1051 | } | |
1052 | sent_starttls = 0; | |
1053 | #endif | |
1054 | } | |
1055 | ||
1056 | /* Wait for a bit before proceeding */ | |
1057 | ||
a719fce4 | 1058 | else if (strncmp(CS outbuffer, "+++ ", 4) == 0) |
c55a77db PH |
1059 | { |
1060 | printf("%s\n", outbuffer); | |
a719fce4 | 1061 | sleep(atoi(CS outbuffer + 4)); |
c55a77db PH |
1062 | } |
1063 | ||
1064 | /* Send outgoing, but barf if unconsumed incoming */ | |
1065 | ||
1066 | else | |
1067 | { | |
5d036699 JH |
1068 | unsigned char * out = outbuffer; |
1069 | ||
1070 | if (strncmp(CS outbuffer, ">>> ", 4) == 0) | |
1071 | { | |
1072 | crlf = 0; | |
1073 | out += 4; | |
1074 | n -= 4; | |
1075 | } | |
c55a77db PH |
1076 | |
1077 | if (*inptr != 0) | |
1078 | { | |
1079 | printf("Unconsumed input: %s", inptr); | |
5d036699 | 1080 | printf(" About to send: %s\n", out); |
9ff403f8 | 1081 | exit(78); |
c55a77db PH |
1082 | } |
1083 | ||
1084 | #ifdef HAVE_TLS | |
1085 | ||
1086 | /* Shutdown TLS */ | |
1087 | ||
5d036699 JH |
1088 | if (strcmp(CS out, "stoptls") == 0 || |
1089 | strcmp(CS out, "STOPTLS") == 0) | |
c55a77db PH |
1090 | { |
1091 | if (!tls_active) | |
1092 | { | |
1093 | printf("STOPTLS read when TLS not active\n"); | |
9ff403f8 | 1094 | exit(77); |
c55a77db PH |
1095 | } |
1096 | printf("Shutting down TLS encryption\n"); | |
1097 | ||
1098 | #ifdef HAVE_OPENSSL | |
1099 | SSL_shutdown(ssl); | |
1100 | SSL_free(ssl); | |
1101 | #endif | |
1102 | ||
1103 | #ifdef HAVE_GNUTLS | |
1104 | gnutls_bye(tls_session, GNUTLS_SHUT_WR); | |
1105 | gnutls_deinit(tls_session); | |
1106 | tls_session = NULL; | |
1107 | gnutls_global_deinit(); | |
1108 | #endif | |
1109 | ||
1110 | tls_active = 0; | |
1111 | continue; | |
1112 | } | |
1113 | ||
1114 | /* Remember that we sent STARTTLS */ | |
1115 | ||
5d036699 JH |
1116 | sent_starttls = (strcmp(CS out, "starttls") == 0 || |
1117 | strcmp(CS out, "STARTTLS") == 0); | |
c55a77db PH |
1118 | |
1119 | /* Fudge: if the command is "starttls_wait", we send the starttls bit, | |
1120 | but we haven't set the flag, so that there is no negotiation. This is for | |
1121 | testing the server's timeout. */ | |
1122 | ||
5d036699 | 1123 | if (strcmp(CS out, "starttls_wait") == 0) |
c55a77db | 1124 | { |
5d036699 | 1125 | out[8] = 0; |
c55a77db PH |
1126 | n = 8; |
1127 | } | |
1128 | #endif | |
1129 | ||
5d036699 JH |
1130 | printf(">>> %s\n", out); |
1131 | if (crlf) | |
c55a77db | 1132 | { |
5d036699 JH |
1133 | strcpy(CS out + n, "\r\n"); |
1134 | n += 2; | |
c55a77db PH |
1135 | } |
1136 | ||
5d036699 | 1137 | n = unescape_buf(out, n); |
c55a77db PH |
1138 | |
1139 | /* OK, do it */ | |
1140 | ||
1141 | alarm(timeout); | |
1142 | if (tls_active) | |
1143 | { | |
1144 | #ifdef HAVE_OPENSSL | |
5d036699 | 1145 | rc = SSL_write (ssl, out, n); |
c55a77db PH |
1146 | #endif |
1147 | #ifdef HAVE_GNUTLS | |
5d036699 | 1148 | if ((rc = gnutls_record_send(tls_session, CS out, n)) < 0) |
c55a77db PH |
1149 | { |
1150 | printf("GnuTLS write error: %s\n", gnutls_strerror(rc)); | |
9ff403f8 | 1151 | exit(76); |
c55a77db PH |
1152 | } |
1153 | #endif | |
1154 | } | |
1155 | else | |
5d036699 | 1156 | rc = write(sock, out, n); |
c55a77db PH |
1157 | alarm(0); |
1158 | ||
1159 | if (rc < 0) | |
1160 | { | |
1161 | printf("Write error: %s\n", strerror(errno)); | |
9ff403f8 | 1162 | exit(75); |
c55a77db PH |
1163 | } |
1164 | } | |
1165 | } | |
1166 | ||
1167 | printf("End of script\n"); | |
60d10ce7 JH |
1168 | shutdown(sock, SHUT_WR); |
1169 | while ((rc = read(sock, inbuffer, sizeof(inbuffer))) > 0) ; | |
c55a77db PH |
1170 | close(sock); |
1171 | ||
1172 | exit(0); | |
1173 | } | |
1174 | ||
1175 | /* End of client.c */ |