2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
67 /* With IPv6, it looks like Digital has mixed up the proper order of
68 recursive header file inclusion, resulting in the compiler complaining
69 that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
70 is needed to have fileno() declared correctly... So let's define u_int */
71 #if defined(VMS) && defined(__DECC) && !defined(__U_INT)
73 typedef unsigned int u_int;
78 #include <openssl/x509.h>
79 #include <openssl/ssl.h>
80 #include <openssl/err.h>
81 #include <openssl/pem.h>
89 #if (defined(VMS) && __VMS_VER < 70000000)
90 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
95 #define PROG s_client_main
97 /*#define SSL_HOST_NAME "www.netscape.com" */
98 /*#define SSL_HOST_NAME "193.118.187.102" */
99 #define SSL_HOST_NAME "localhost"
101 /*#define TEST_CERT "client.pem" */ /* no default cert. */
104 #define BUFSIZZ 1024*8
106 extern int verify_depth;
107 extern int verify_error;
112 static int c_Pause=0;
113 static int c_debug=0;
114 static int c_showcerts=0;
116 static void sc_usage(void);
117 static void print_stuff(BIO *berr,SSL *con,int full);
118 static BIO *bio_c_out=NULL;
119 static int c_quiet=0;
121 static void sc_usage(void)
123 BIO_printf(bio_err,"usage: s_client args\n");
124 BIO_printf(bio_err,"\n");
125 BIO_printf(bio_err," -host host - use -connect instead\n");
126 BIO_printf(bio_err," -port port - use -connect instead\n");
127 BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
129 BIO_printf(bio_err," -verify arg - turn on peer certificate verification\n");
130 BIO_printf(bio_err," -cert arg - certificate file to use, PEM format assumed\n");
131 BIO_printf(bio_err," -key arg - Private key file to use, PEM format assumed, in cert file if\n");
132 BIO_printf(bio_err," not specified but cert file is.\n");
133 BIO_printf(bio_err," -CApath arg - PEM format directory of CA's\n");
134 BIO_printf(bio_err," -CAfile arg - PEM format file of CA's\n");
135 BIO_printf(bio_err," -reconnect - Drop and re-make the connection with the same Session-ID\n");
136 BIO_printf(bio_err," -pause - sleep(1) after each read(2) and write(2) system call\n");
137 BIO_printf(bio_err," -showcerts - show all certificates in the chain\n");
138 BIO_printf(bio_err," -debug - extra output\n");
139 BIO_printf(bio_err," -nbio_test - more ssl protocol testing\n");
140 BIO_printf(bio_err," -state - print the 'ssl' states\n");
142 BIO_printf(bio_err," -nbio - Run with non-blocking IO\n");
144 BIO_printf(bio_err," -crlf - convert LF from terminal into CRLF\n");
145 BIO_printf(bio_err," -quiet - no s_client output\n");
146 BIO_printf(bio_err," -ssl2 - just use SSLv2\n");
147 BIO_printf(bio_err," -ssl3 - just use SSLv3\n");
148 BIO_printf(bio_err," -tls1 - just use TLSv1\n");
149 BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
150 BIO_printf(bio_err," -bugs - Switch on all SSL implementation bug workarounds\n");
151 BIO_printf(bio_err," -cipher - preferred cipher to use, use the 'openssl ciphers'\n");
152 BIO_printf(bio_err," command to see what is available\n");
156 int MAIN(int, char **);
158 int MAIN(int argc, char **argv)
161 SSL *con=NULL,*con2=NULL;
162 int s,k,width,state=0;
163 char *cbuf=NULL,*sbuf=NULL;
164 int cbuf_len,cbuf_off;
165 int sbuf_len,sbuf_off;
166 fd_set readfds,writefds;
169 char *host=SSL_HOST_NAME;
170 char *cert_file=NULL,*key_file=NULL;
171 char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
172 int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
174 int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
176 int ret=1,in_init=1,i,nbio_test=0;
178 SSL_METHOD *meth=NULL;
184 #if !defined(NO_SSL2) && !defined(NO_SSL3)
185 meth=SSLv23_client_method();
186 #elif !defined(NO_SSL3)
187 meth=SSLv3_client_method();
188 #elif !defined(NO_SSL2)
189 meth=SSLv2_client_method();
199 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
201 if ( ((cbuf=Malloc(BUFSIZZ)) == NULL) ||
202 ((sbuf=Malloc(BUFSIZZ)) == NULL))
204 BIO_printf(bio_err,"out of memory\n");
209 verify_error=X509_V_OK;
218 if (strcmp(*argv,"-host") == 0)
220 if (--argc < 1) goto bad;
223 else if (strcmp(*argv,"-port") == 0)
225 if (--argc < 1) goto bad;
226 port=atoi(*(++argv));
227 if (port == 0) goto bad;
229 else if (strcmp(*argv,"-connect") == 0)
231 if (--argc < 1) goto bad;
232 if (!extract_host_port(*(++argv),&host,NULL,&port))
235 else if (strcmp(*argv,"-verify") == 0)
237 verify=SSL_VERIFY_PEER;
238 if (--argc < 1) goto bad;
239 verify_depth=atoi(*(++argv));
240 BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
242 else if (strcmp(*argv,"-cert") == 0)
244 if (--argc < 1) goto bad;
245 cert_file= *(++argv);
247 else if (strcmp(*argv,"-prexit") == 0)
249 else if (strcmp(*argv,"-crlf") == 0)
251 else if (strcmp(*argv,"-quiet") == 0)
253 else if (strcmp(*argv,"-pause") == 0)
255 else if (strcmp(*argv,"-debug") == 0)
257 else if (strcmp(*argv,"-showcerts") == 0)
259 else if (strcmp(*argv,"-nbio_test") == 0)
261 else if (strcmp(*argv,"-state") == 0)
264 else if (strcmp(*argv,"-ssl2") == 0)
265 meth=SSLv2_client_method();
268 else if (strcmp(*argv,"-ssl3") == 0)
269 meth=SSLv3_client_method();
272 else if (strcmp(*argv,"-tls1") == 0)
273 meth=TLSv1_client_method();
275 else if (strcmp(*argv,"-bugs") == 0)
277 else if (strcmp(*argv,"-key") == 0)
279 if (--argc < 1) goto bad;
282 else if (strcmp(*argv,"-reconnect") == 0)
286 else if (strcmp(*argv,"-CApath") == 0)
288 if (--argc < 1) goto bad;
291 else if (strcmp(*argv,"-CAfile") == 0)
293 if (--argc < 1) goto bad;
296 else if (strcmp(*argv,"-no_tls1") == 0)
297 off|=SSL_OP_NO_TLSv1;
298 else if (strcmp(*argv,"-no_ssl3") == 0)
299 off|=SSL_OP_NO_SSLv3;
300 else if (strcmp(*argv,"-no_ssl2") == 0)
301 off|=SSL_OP_NO_SSLv2;
302 else if (strcmp(*argv,"-cipher") == 0)
304 if (--argc < 1) goto bad;
308 else if (strcmp(*argv,"-nbio") == 0)
313 BIO_printf(bio_err,"unknown option %s\n",*argv);
327 app_RAND_load_file(NULL, bio_err, 0);
329 if (bio_c_out == NULL)
333 bio_c_out=BIO_new(BIO_s_null());
337 if (bio_c_out == NULL)
338 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
342 OpenSSL_add_ssl_algorithms();
343 SSL_load_error_strings();
344 ctx=SSL_CTX_new(meth);
347 ERR_print_errors(bio_err);
352 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
354 SSL_CTX_set_options(ctx,off);
356 if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
358 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
359 BIO_printf(bio_err,"error setting cipher list\n");
360 ERR_print_errors(bio_err);
365 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
368 SSL_CTX_set_verify(ctx,verify,verify_callback);
369 if (!set_cert_stuff(ctx,cert_file,key_file))
372 if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
373 (!SSL_CTX_set_default_verify_paths(ctx)))
375 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
376 ERR_print_errors(bio_err);
382 /* SSL_set_cipher_list(con,"RC4-MD5"); */
386 if (init_client(&s,host,port) == 0)
388 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
392 BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
398 BIO_printf(bio_c_out,"turning on non blocking io\n");
399 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
401 ERR_print_errors(bio_err);
406 if (c_Pause & 0x01) con->debug=1;
407 sbio=BIO_new_socket(s,BIO_NOCLOSE);
413 test=BIO_new(BIO_f_nbio_test());
414 sbio=BIO_push(test,sbio);
420 BIO_set_callback(sbio,bio_dump_cb);
421 BIO_set_callback_arg(sbio,bio_c_out);
424 SSL_set_bio(con,sbio,sbio);
425 SSL_set_connect_state(con);
427 /* ok, lets connect */
428 width=SSL_get_fd(con)+1;
446 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
457 print_stuff(bio_c_out,con,full_log);
458 if (full_log > 0) full_log--;
463 BIO_printf(bio_c_out,"drop connection and then reconnect\n");
465 SSL_set_connect_state(con);
466 SHUTDOWN(SSL_get_fd(con));
472 ssl_pending = read_ssl && SSL_pending(con);
479 if (read_tty) FD_SET(fileno(stdin),&readfds);
480 if (write_tty) FD_SET(fileno(stdout),&writefds);
483 FD_SET(SSL_get_fd(con),&readfds);
485 FD_SET(SSL_get_fd(con),&writefds);
487 if(!tty_on || !write_tty) {
489 FD_SET(SSL_get_fd(con),&readfds);
491 FD_SET(SSL_get_fd(con),&writefds);
494 /* printf("mode tty(%d %d%d) ssl(%d%d)\n",
495 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
497 /* Note: under VMS with SOCKETSHR the second parameter
498 * is currently of type (int *) whereas under other
499 * systems it is (void *) if you don't have a cast it
500 * will choke the compiler: if you do have a cast then
501 * you can either go for (int *) or (void *).
504 /* Under Windows we make the assumption that we can
505 * always write to the tty: therefore if we need to
506 * write to the tty we just fall through. Otherwise
507 * we timeout the select every second and see if there
508 * are any keypresses. Note: this is a hack, in a proper
509 * Windows application we wouldn't do this.
516 i=select(width,(void *)&readfds,(void *)&writefds,
518 if(!i && (!_kbhit() || !read_tty) ) continue;
519 } else i=select(width,(void *)&readfds,(void *)&writefds,
523 i=select(width,(void *)&readfds,(void *)&writefds,
528 BIO_printf(bio_err,"bad select %d\n",
529 get_last_socket_error());
535 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
537 k=SSL_write(con,&(cbuf[cbuf_off]),
538 (unsigned int)cbuf_len);
539 switch (SSL_get_error(con,k))
544 if (k <= 0) goto end;
545 /* we have done a write(con,NULL,0); */
551 else /* if (cbuf_len > 0) */
557 case SSL_ERROR_WANT_WRITE:
558 BIO_printf(bio_c_out,"write W BLOCK\n");
562 case SSL_ERROR_WANT_READ:
563 BIO_printf(bio_c_out,"write R BLOCK\n");
568 case SSL_ERROR_WANT_X509_LOOKUP:
569 BIO_printf(bio_c_out,"write X BLOCK\n");
571 case SSL_ERROR_ZERO_RETURN:
574 BIO_printf(bio_c_out,"shutdown\n");
584 case SSL_ERROR_SYSCALL:
585 if ((k != 0) || (cbuf_len != 0))
587 BIO_printf(bio_err,"write:errno=%d\n",
588 get_last_socket_error());
598 ERR_print_errors(bio_err);
603 /* Assume Windows can always write */
604 else if (!ssl_pending && write_tty)
606 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
609 #ifdef CHARSET_EBCDIC
610 ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
612 i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
616 BIO_printf(bio_c_out,"DONE\n");
629 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
632 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
635 k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
637 /* Demo for pending and peek :-) */
638 k=SSL_read(con,sbuf,16);
640 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
644 switch (SSL_get_error(con,k))
655 case SSL_ERROR_WANT_WRITE:
656 BIO_printf(bio_c_out,"read W BLOCK\n");
660 case SSL_ERROR_WANT_READ:
661 BIO_printf(bio_c_out,"read R BLOCK\n");
664 if ((read_tty == 0) && (write_ssl == 0))
667 case SSL_ERROR_WANT_X509_LOOKUP:
668 BIO_printf(bio_c_out,"read X BLOCK\n");
670 case SSL_ERROR_SYSCALL:
671 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
673 case SSL_ERROR_ZERO_RETURN:
674 BIO_printf(bio_c_out,"closed\n");
677 ERR_print_errors(bio_err);
686 else if (FD_ISSET(fileno(stdin),&readfds))
693 i=read(fileno(stdin),cbuf,BUFSIZZ/2);
695 /* both loops are skipped when i <= 0 */
696 for (j = 0; j < i; j++)
699 for (j = i-1; j >= 0; j--)
701 cbuf[j+lf_num] = cbuf[j];
706 cbuf[j+lf_num] = '\r';
712 i=read(fileno(stdin),cbuf,BUFSIZZ);
714 if ((!c_quiet) && ((i <= 0) || (cbuf[0] == 'Q')))
716 BIO_printf(bio_err,"DONE\n");
720 if ((!c_quiet) && (cbuf[0] == 'R'))
722 BIO_printf(bio_err,"RENEGOTIATING\n");
723 SSL_renegotiate(con);
730 #ifdef CHARSET_EBCDIC
731 ebcdic2ascii(cbuf, cbuf, i);
741 SHUTDOWN(SSL_get_fd(con));
744 if(prexit) print_stuff(bio_c_out,con,1);
745 if (con != NULL) SSL_free(con);
746 if (con2 != NULL) SSL_free(con2);
747 if (ctx != NULL) SSL_CTX_free(ctx);
748 if (cbuf != NULL) { memset(cbuf,0,BUFSIZZ); Free(cbuf); }
749 if (sbuf != NULL) { memset(sbuf,0,BUFSIZZ); Free(sbuf); }
750 if (bio_c_out != NULL)
759 static void print_stuff(BIO *bio, SSL *s, int full)
763 static char *space=" ";
766 STACK_OF(X509_NAME) *sk2;
775 sk=SSL_get_peer_cert_chain(s);
778 got_a_chain = 1; /* we don't have it for SSL2 (yet) */
780 BIO_printf(bio,"---\nCertificate chain\n");
781 for (i=0; i<sk_X509_num(sk); i++)
783 X509_NAME_oneline(X509_get_subject_name(
784 sk_X509_value(sk,i)),buf,BUFSIZ);
785 BIO_printf(bio,"%2d s:%s\n",i,buf);
786 X509_NAME_oneline(X509_get_issuer_name(
787 sk_X509_value(sk,i)),buf,BUFSIZ);
788 BIO_printf(bio," i:%s\n",buf);
790 PEM_write_bio_X509(bio,sk_X509_value(sk,i));
794 BIO_printf(bio,"---\n");
795 peer=SSL_get_peer_certificate(s);
798 BIO_printf(bio,"Server certificate\n");
799 if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
800 PEM_write_bio_X509(bio,peer);
801 X509_NAME_oneline(X509_get_subject_name(peer),
803 BIO_printf(bio,"subject=%s\n",buf);
804 X509_NAME_oneline(X509_get_issuer_name(peer),
806 BIO_printf(bio,"issuer=%s\n",buf);
809 BIO_printf(bio,"no peer certificate available\n");
811 sk2=SSL_get_client_CA_list(s);
812 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
814 BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
815 for (i=0; i<sk_X509_NAME_num(sk2); i++)
817 xn=sk_X509_NAME_value(sk2,i);
818 X509_NAME_oneline(xn,buf,sizeof(buf));
819 BIO_write(bio,buf,strlen(buf));
820 BIO_write(bio,"\n",1);
825 BIO_printf(bio,"---\nNo client certificate CA names sent\n");
827 p=SSL_get_shared_ciphers(s,buf,BUFSIZ);
830 /* This works only for SSL 2. In later protocol
831 * versions, the client does not know what other
832 * ciphers (in addition to the one to be used
833 * in the current connection) the server supports. */
835 BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
841 BIO_write(bio,space,15-j%25);
844 BIO_write(bio,((i%3)?" ":"\n"),1);
853 BIO_write(bio,"\n",1);
856 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
857 BIO_number_read(SSL_get_rbio(s)),
858 BIO_number_written(SSL_get_wbio(s)));
860 BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
861 c=SSL_get_current_cipher(s);
862 BIO_printf(bio,"%s, Cipher is %s\n",
863 SSL_CIPHER_get_version(c),
864 SSL_CIPHER_get_name(c));
867 pktmp = X509_get_pubkey(peer);
868 BIO_printf(bio,"Server public key is %d bit\n",
869 EVP_PKEY_bits(pktmp));
870 EVP_PKEY_free(pktmp);
872 SSL_SESSION_print(bio,SSL_get_session(s));
873 BIO_printf(bio,"---\n");